Welding device for house construction and welding method thereof

Abstract

The application relates to the field of house construction equipment, in particular to a welding device for house construction and a welding method thereof, which comprises a positioning frame, a mounting base of the integral device, a shaft hole horizontally penetrating through the bottom end of the positioning frame, a freely rotatable supporting roller assembled in the shaft hole, a secondary wire wound and stored on the outer wall of the supporting roller, a welding gun fixedly connected with the outer end of the secondary wire, and realizing wire collecting and releasing with the forward and reverse rotation of the supporting roller; an elastic force storage mechanism fixedly assembled on the outer side of the positioning frame corresponding to the shaft hole, comprising a positioning ring, a coil spring and a transmission ring. The elastic force storage mechanism is matched with the locking assembly, the automatic force storage and wire releasing and the elastic reset of the secondary wire are realized, the cable can be flexibly pulled out to adapt to the welding operation distance, and is automatically rewound and reset; the self-adaptive hanging assembly is adopted to self-adaptively adjust the installation interval of the two groups of hanging racks, adapt to different construction site fixed installation structure forms, and has high universality.

Description

Technical Field

[0001] This invention relates to the field of building construction equipment, specifically to a welding device and welding method for building construction. Background Technology

[0002] In the construction of building projects, steel structure welding, rebar splicing welding, and building component splicing welding are among the core processes on the construction site. The convenience and standardization of welding operations directly affect the efficiency and safety of building construction. Currently, welding equipment used on building construction sites is generally equipped with extended secondary welding lines to adapt to welding construction scenarios involving high-altitude buildings, large spans, and dispersed work points, meeting the welding operation needs of components in different locations.

[0003] In existing technologies, welding torch secondary cables at construction sites are mostly laid out using methods such as free dragging, simple bundling, or fixed-point suspension. In actual construction, there is no automatic cable management structure. When moving the welding torch for multi-point welding operations, workers must manually drag the secondary cables to extend their path. After the work is completed, they must manually tidy and coil the cables. This is not only cumbersome and time-consuming, significantly reducing welding efficiency, but also makes it difficult to ensure neat cable management, easily leading to cable tangling, knots, and messy accumulation. Scattered secondary cables placed on the construction ground are easily trampled by workers and crushed by building materials. Long-term use will cause damage to the cable sheath and aging of the internal wiring, shortening the lifespan of the secondary cables and posing safety hazards such as leakage and short circuits, seriously affecting electrical safety and construction safety at the construction site.

[0004] Furthermore, the length of the secondary cables in existing welding equipment cannot be precisely adjusted to suit different construction conditions. Traditional secondary cables are mostly set to a fixed length, which cannot flexibly adjust the cable extension length for different construction scenarios in building construction, such as close-range welding, long-distance high-altitude welding, and welding in confined spaces. When the cable is too long, it is easy to drag on the ground and become a tripping hazard, and it will also accumulate and become messy. When the cable is too short, it cannot cover long-distance work points, and construction personnel need to frequently move the entire position of the welding equipment, which greatly limits the flexibility and adaptability of welding operations and makes it difficult to meet the diverse welding construction needs of building construction under various working conditions.

[0005] Furthermore, existing secondary cable management structures lack stable clamping, limiting, and guiding mechanisms, making them prone to deviation, unwinding, and misalignment during cable winding and unwinding. This results in cable winding and unwinding jamming, incomplete winding, and long-term use can cause localized bending, twisting, and deformation of the cable, exacerbating cable loss. Additionally, traditional management structures lack self-adaptive tension protection mechanisms, making cable tension uncontrollable. Excessive tension can pull the cable, causing loose connections, while excessive looseness can lead to cable detachment, further reducing the stability and reliability of the equipment.

[0006] In addition, existing welding auxiliary fixing devices have a simple structure, mostly adopting a fixed-point installation method, which can only be adapted to a single size and specification of construction fixing point for suspension installation. However, the size, spacing, and shape of welding fixing structures at building construction sites vary greatly. Traditional fixing structures cannot adapt to different installation points, resulting in extremely poor versatility and adaptability. Construction workers need to change different fixing tools according to different construction locations, or complete the equipment installation by temporarily binding and drilling holes. This is not only cumbersome to install and disassemble, but also has poor stability. During welding operations, the equipment is prone to shaking and shifting, affecting the accuracy of welding operations. At the same time, temporary drilling fixing can also damage the building's base structure, which does not meet the requirements of standardized construction of buildings. Summary of the Invention

[0007] The purpose of this invention is to provide a welding device and welding method for building construction in order to solve the above-mentioned problems. By setting up an elastic energy storage mechanism and a locking component, the secondary wire can be automatically stored and released and elastically reset and retracted, flexibly pulling out the cable to adapt to the welding operation distance, and automatically retracting and resetting. Furthermore, an adaptive hanging component is adopted to adaptively adjust the installation spacing of the two sets of hanging frames, adapting to different fixed installation structures on construction sites, and has strong versatility, as detailed below.

[0008] To achieve the above objectives, the present invention provides the following technical solution: The present invention provides a welding device for building construction, comprising: The positioning frame serves as the mounting base for the entire device. A shaft hole is horizontally provided at the bottom of the positioning frame. A freely rotatable roller is installed inside the shaft hole. The outer wall of the roller is wound to collect secondary wire. The outer end of the secondary wire is fixedly connected to the welding torch for welding operations. The wire is wound and unwound as the roller rotates forward and backward. The elastic energy storage mechanism is fixedly assembled at the corresponding shaft hole on the outside of the positioning frame. It includes a positioning ring, a coil spring, and a transmission ring. The positioning ring is limited and fixed at the shaft hole port on the outside of the positioning frame. The transmission ring is coaxially rotated and sleeved on the outside of the positioning ring and extends to the outer end of the idler roller that passes through the positioning frame. The coil spring is axially arranged between the positioning ring and the transmission ring, and its two ends are fixedly connected to the positioning ring and the transmission ring respectively. It generates torsional energy storage as the transmission ring rotates.

[0009] Preferably, the roller end is provided with a main shaft passing through the shaft hole, and the two ends of the main shaft are respectively fixed with an end cover and a tail cover. The end cover has a retaining groove on its inner side. The secondary wire is wound and stored in the roller area between the positioning frame and the tail cover of the main shaft, which axially limits the secondary wire and prevents it from unwinding.

[0010] Preferably, a locking assembly is also included, comprising a locking ring and a knob. The knob is fixed to the outer end of the locking ring, and a retaining rod passing through a retaining groove is fixed to the middle of the knob. A limit nut is fixed to the outer end of the retaining rod, and a spring is sleeved on the retaining rod, with the two ends of the spring abutting against the end cap and the limit nut, respectively. The locking ring has external teeth on the side facing the transmission ring, and the transmission ring has corresponding internal teeth that can mesh with the external teeth. The engagement and disengagement of the internal and external teeth are achieved by axially sliding the locking assembly.

[0011] Preferably, the spring is in a normally compressed state. Under normal conditions, the spring force pushes the locking ring to adhere to the transmission ring, so that the external teeth and internal teeth maintain a stable meshing and locking state. Pulling the knob outward can compress the spring and drive the locking ring to slide axially, so that the internal and external teeth separate and the locking state between the transmission ring and the idler roller is released.

[0012] Preferably, it also includes a constraint component, which is mounted inside the positioning frame and arranged parallel to the roller above it. The outer side of the positioning ring is provided with a retaining spring groove for receiving the end of the coil spring, and the positioning frame has a receiving groove for receiving the constraint component, in which a vertically extending slide rod is fixed. The constraint assembly includes a receiving frame with a vertically sliding fit receiving groove. A sliding sleeve is vertically slidably mounted on the top of the receiving frame. A constraint roller is rotatably mounted on the outside of the receiving frame. The sliding sleeve and the sliding rod are vertically slidingly fitted. A compression spring is fitted over the sliding rod. The compression spring abuts against the top of the receiving frame and the receiving groove. Under normal conditions, the compression spring drives the constraint roller to press down and fit against the support roller, so that the constraint roller and the support roller cooperate to clamp the secondary wire and limit and guide the secondary wire's path.

[0013] Preferably, the system also includes an adaptive mounting assembly, which is installed on the top of the positioning frame and includes two symmetrically arranged mounting brackets, a synchronous belt, and matching pulleys. The pulleys are rotatably mounted on both sides of the top of the positioning frame, and the synchronous belt is wrapped around the outside of the two sets of pulleys. The two sets of mounting brackets are symmetrically fixed on the belt bodies on both sides of the synchronous belt. The two sets of mounting brackets can open and close synchronously in opposite directions with the transmission and cooperation of the synchronous belt and pulleys, adaptively adjusting the distance between the two sets of mounting brackets to adapt to the suspension installation of welded fixed structures of different sizes.

[0014] Preferably, the top side of the positioning frame is provided with a sliding groove for supporting the sliding of the hook frame, and the two sides of the positioning frame are provided with rotating seats for supporting the rotation of the pulley. The hook frame includes an integrally fixed overlapping section, a connecting section and a mounting buckle. The overlapping section is used to hang and support on an external fixed structure. The connecting section vertically connects the overlapping section and the mounting buckle. The mounting buckle is fixedly connected to the timing belt. A tension shaft is vertically fixed at the bottom of the mounting buckle.

[0015] Preferably, an elastic element is tensioned between the two sets of hanging brackets and their shafts. The elastic element continuously applies a pulling force to the two sets of shafts, causing the two sets of hanging brackets to maintain an inward tightening tendency under normal conditions, ensuring that the hanging brackets fit tightly against the fixed structure after suspension installation.

[0016] Preferably, the connecting segment extends vertically through the slide groove, and the connecting segment slides horizontally with the positioning frame through the slide groove. A limiting slip ring is fixed on the outside of the connecting segment to prevent the hanging frame from disengaging from the positioning frame.

[0017] This application also discloses a welding method for a welding apparatus used in building construction, applied to the welding apparatus for building construction as described above, comprising the following steps: S1. Adaptive Suspension Installation: Based on the dimensions and spacing of the fixed structure in the welding area of ​​the building construction site, two sets of hanging frames are manually extended to both sides. Under the transmission of the synchronous belt and pulley, the two sets of hanging frames slide synchronously in opposite directions, autonomously adapting to the installation spacing of the current fixed structure. The overlapping section at the top of the hanging frame is stably hung on the steel beam, bracket, or other external fixed structure in the welding area. After the external force of the extension is removed, the elastic component between the two sets of shafts continues to pull the two sets of hanging frames together by its own elastic recoil force, so that the hanging frames tightly hug the outer wall of the fixed structure and eliminate the installation gap. At the same time, with the sliding limit of the slide groove and the anti-detachment limit of the limit ring, it ensures that the hanging frame installation does not deviate or detach, quickly completing the overall non-drilling, detachable suspension fixation of the device, adapting to different specifications of installation bases, and providing convenient and stable installation. S2. Power-Accumulating Welding: After the device is installed, the inner and outer teeth of the locking component are in a locked state under normal conditions, and the idler roller, transmission ring, and coil spring maintain a linked state. The construction worker pulls the welding torch outward, which drives the secondary wire to be pulled outward at a uniform speed, thereby driving the idler roller and transmission ring to rotate synchronously in the forward direction. During the rotation, the positioning ring remains fixed, forcing the coil spring between the two to undergo elastic torsional deformation and continuously accumulate elastic potential energy. According to the distance requirements of the on-site welding operation and the location of the construction point, the secondary wire of the corresponding length is flexibly pulled out, under the constraint of the roller and the idler roller's elasticity. Under the action of clamping and limiting, the secondary wire is smoothly discharged without deviation or jamming, and construction personnel can carry out welding construction work for steel structures, steel reinforcement components and other building construction. When the welding of a single section is completed and there is no need to continue the discharge work, the welding gun is released, and the coil spring that has accumulated elastic potential energy automatically releases energy and resets, driving the transmission ring, locking component and idler roller to rotate synchronously in the opposite direction, automatically tidying up and winding the secondary wire that is pulled outward, so that the welding gun automatically resets and is close to the positioning frame position, effectively avoiding the secondary wire and welding gun from being scattered, dragging on the ground, or tangling and piling up. If it is necessary to maintain the unfolded length, then execute S3. S3. Secondary Wire Length Adjustment: For different construction conditions such as close-range welding, high-altitude long-distance welding, and welding in confined spaces, when it is necessary to reset the fixed extension length of the secondary wire on the welding torch side, a controllable adjustment of the secondary wire is performed. First, manually pull the knob outwards to cause the locking ring to slide axially, compressing the end spring and completely separating the outer teeth of the locking ring from the inner teeth of the transmission ring. This releases the synchronous linkage locking relationship between the idler roller, the transmission ring, and the coil spring, allowing the idler roller to rotate independently. Then, rotate the knob to drive the idler roller to rotate independently in both forward and reverse directions via the retaining rod. During the rotation of the idler roller... The elastic clamping action of the upper constraint roller allows for precise adjustment of the winding and unwinding of the secondary wire. Utilizing the principle of winding on one side and unwinding on the other side of the secondary wire on both sides of the roller, the extension length of the secondary wire at the welding gun end is precisely adjusted. After the secondary wire is adjusted to the target working length suitable for the current construction conditions, the tension on the knob is released, the spring returns to its original position, and pushes the locking ring to axially engage with the transmission ring. The inner and outer teeth re-engage and lock, fixing the rotation position of the roller and completing the locking of the secondary wire length. This ensures that the secondary wire length is fixed during subsequent welding operations, reduces spontaneous expansion and contraction, and adapts to diverse construction needs.

[0018] The beneficial effects are as follows: 1. By setting up an elastic energy storage mechanism and a locking component, the present invention realizes the automatic energy storage and release of the secondary wire and the elastic reset and retraction. In the normal locked state, pulling the welding gun can drive the roller and the transmission ring to rotate and twist the coil spring to store energy, flexibly pulling out the cable to adapt to the welding operation distance. After the welding is completed and the welding gun is released, the coil spring can automatically release the force to drive the roller to reverse, complete the automatic retraction and reset of the secondary wire, avoid the problems of secondary wires being scattered and piled up, tangled and knotted, dragging on the ground and being damaged by pressure, and reduce safety hazards such as cable sheath damage, line aging, leakage and short circuit.

[0019] 2. When it is necessary to adjust the unfolded length of the secondary wire on the welding torch side without retracting it, pull the knob to compress the spring, so that the outer teeth of the locking ring separate from the inner teeth of the transmission ring. Then, release the lock between the idler roller and the transmission ring. Rotating the knob independently will drive the idler roller to rotate. With the help of the constraint component, the controllable adjustment of the secondary wire's single-sided winding and unfolding can be achieved. The extension length of the secondary wire can be adjusted and fixed arbitrarily according to different construction scenarios such as close-range welding, high-altitude long-distance welding, and welding in narrow spaces.

[0020] 3. The constraint roller always elastically presses down against the surface of the idler roller, forming an elastic clamping structure for the cable. This structure can limit, guide, and compress the wound secondary cable, effectively preventing problems such as deviation, misalignment, unwinding, and jamming during the winding and unwinding process. It also avoids local twisting, bending, and deformation of the cable over long-term use. At the same time, the elastic clamping structure can adapt to changes in cable thickness and winding and unwinding tension, preventing the cable from falling off due to excessive looseness or being pulled and damaged at the terminals due to excessive tightness. This improves the smoothness of the secondary cable winding and unwinding process and the stability of equipment operation.

[0021] 4. Adopting an adaptive mounting component, relying on the transmission cooperation of pulleys and synchronous belts, the two sets of mounting frames can be opened and closed synchronously in opposite directions, adaptively adjusting the installation spacing of the two sets of mounting frames, adapting to fixed installation structures of different sizes, spacings and shapes on the construction site, and solving the problems of fixed installation dimensions and poor versatility of traditional welding auxiliary devices. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a front view structural diagram of the present invention; Figure 2 This is a three-dimensional structural schematic diagram of the present invention; Figure 3 This is a left-side structural diagram of the present invention; Figure 4 This is a three-dimensional structural breakdown diagram of the present invention; Figure 5 This is a three-dimensional structural diagram of the positioning frame of the present invention; Figure 6 This is a structurally disassembled schematic diagram of the transmission ring and locking assembly of the present invention; Figure 7 This is a three-dimensional structural schematic diagram of the locking component of the present invention; Figure 8 This is a three-dimensional structural disassembly diagram of the mounting bracket of the present invention; Figure 9 This is a three-dimensional structural schematic diagram of another aspect of the present invention; Figure 10 This is a three-dimensional structural disassembly diagram of another aspect of the present invention.

[0024] The annotations in the attached figures are explained as follows: 1. Welding torch; 2. Positioning frame; 201. Shaft hole; 202. Positioning ring; 202a. Snap ring groove; 203. Slide groove; 204. Rotating seat; 205. Receiving groove; 206. Slide rod; 3. Idler roller; 301. Main shaft; 302. Shaft end hole; 303. End cover; 304. Retaining groove; 305. Tail cover; 4. Secondary wire; 5. Coil spring; 6. Transmission ring; 601. Rotating flange; 602. Internal teeth; 7. Locking assembly; 701. Locking ring; 702. Knob; 702 a. Grip groove; 703. External tooth; 704. Retaining rod; 705. Limiting nut; 706. Spring; 8. Restraint assembly; 801. Receiving frame; 802. Restraint roller; 803. Retaining ring; 804. Compression spring; 805. Sliding sleeve; 9. Hanging bracket; 901. Overlap section; 902. Connecting section; 903. Mounting buckle; 903a. External bolt hole; 904. Shaft; 905. Limiting slip ring; 10. Synchronous belt; 10a. Internal bolt hole; 11. Pulley; 12. Elastic component. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0026] It should be noted that all directional and positional terms used in this invention, such as "up," "down," "left," "right," "front," "back," "vertical," "horizontal," "inner," "outer," "top," "lower," "lateral," "longitudinal," and "center," are only used to explain the relative positional relationships and connections between components in a specific state (as shown in the accompanying drawings). They are merely for the convenience of describing the invention and do not require the invention to be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on the invention. Furthermore, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated.

[0027] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0028] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0029] See Figures 1-10 As shown, the present invention provides a welding apparatus for building construction, comprising: The positioning frame 2 serves as the mounting base for the entire device. A shaft hole 201 is horizontally provided at the bottom of the positioning frame 2. A freely rotating idler roller 3 is installed inside the shaft hole 201. The outer wall of the idler roller 3 is wound to collect the secondary wire 4. The outer end of the secondary wire 4 is fixedly connected to the welding torch 1 for welding operations. The wire is wound and unwound as the idler roller 3 rotates forward and backward. As the overall load-bearing base, the positioning frame 2 can centrally bear the entire load of the cable storage mechanism, the limit constraint mechanism, and the adaptive suspension mechanism. The overall structure is rigid and the stress is uniform, which can effectively avoid the problems of structural deformation, loosening and shaking caused by long-term suspension use. It provides a stable installation benchmark for the entire secondary wire 4 winding and unwinding adjustment structure and ensures the accuracy and stability of the linkage between various mechanisms.

[0030] The elastic energy storage mechanism is fixedly assembled at the corresponding shaft hole 201 on the outside of the positioning frame 2. It includes a positioning ring 202, a coil spring 5, and a transmission ring 6. The positioning ring 202 is limited and fixed at the port of the shaft hole 201 on the outside of the positioning frame 2. The transmission ring 6 is coaxially rotatably sleeved on the outside of the positioning ring 202 and extends to the outer end of the roller 3 that passes through the positioning frame 2. The coil spring 5 is axially arranged between the positioning ring 202 and the transmission ring 6, and both ends of the coil spring 5 are fixedly connected to the positioning ring 202 and the transmission ring 6 respectively. It generates torsional energy storage as the transmission ring 6 rotates. The outer end of the transmission ring 6 is fixed with a rotating flange 601, which rotates and engages with the positioning ring 202. By using the positioning ring 202 to keep it stationary and the transmission ring 6 to rotate with the roller 3, the coil spring 5 can achieve stable torsional energy storage and energy release and reset. The elastic restoring force of the coil spring 5 can realize the automatic winding of the secondary wire 4 without power. No additional driving equipment such as motors and electrical controls are required. The structure is simple, the failure rate is low, and it is energy-saving and environmentally friendly. At the same time, it can realize the effect of using the welding torch 1 as soon as it is pulled and retracting it as soon as it is released, which is suitable for welding operations with frequent start and stop on the construction site.

[0031] In this application, the maximum torsion angle of the coil spring 5 is matched with the maximum wire feeding length of the idler roller 3. A limit fit structure is provided between the transmission ring 6 and the positioning ring 202. When the idler roller 3 reaches the maximum wire feeding position, the limit fit structure restricts the transmission ring 6 from continuing to rotate, thereby preventing the coil spring 5 from being over-torsed and improving the reliability and service life of the elastic energy storage mechanism.

[0032] As an optional implementation, the roller 3 is provided with a main shaft 301 passing through the shaft hole 201 at its end. The two ends of the main shaft 301 are respectively fixed with end caps 303 and tail caps 305. The inner side of the end caps 303 is provided with a retaining groove 304. The secondary wire 4 is wound and stored in the roller area of ​​the main shaft 301 between the positioning frame 2 and the tail cap 305, which axially limits the secondary wire 4 and prevents it from unwinding. With this configuration, the end caps 303 and tail caps 305, which are sealed at both ends, can effectively limit the axial movement of the secondary wire 4 during winding and unwinding. This can effectively prevent the cable from running off course, stacking, or coming off the roller. It ensures that the secondary wire 4 is evenly and neatly wound on the outer wall of the main shaft 301, avoids the damage and bending problems caused by local accumulation and compression of the cable, and greatly improves the neatness of cable storage. When the idler roller 3 reaches the fully retracted position, the mechanical stop structure formed between the end of the idler roller and the positioning frame 2 restricts the continued reverse rotation, so that the welding gun 1 is kept in the predetermined storage position, avoiding the secondary wire 4 being pressed or the welding gun 1 colliding with the positioning frame 2 due to the excessive winding.

[0033] It also includes a locking assembly 7, which includes a locking ring 701 and a knob 702. The knob 702 is fixed to the outer end of the locking ring 701. The outer circumference of the knob 702 is provided with several sets of grip grooves 702a for easy hand holding. A retaining rod 704 passing through a retaining groove 304 is fixed in the middle of the knob 702. The end of the main shaft 301 has a shaft end hole 302 for accommodating the extension of the retaining rod 704. A limit nut 705 is fixed to the outer end of the retaining rod 704. A spring 706 is sleeved on the retaining rod 704, and the two ends of the spring 706 abut against the end cap 303 and the limit nut 705, respectively. The locking ring 701 is provided with a side facing the transmission ring 6. The device is equipped with external teeth 703, and the transmission ring 6 is equipped with corresponding internal teeth 602 that can mesh with the external teeth 703. The meshing and separation of the internal and external teeth 703 are achieved through the axial sliding locking component 7. With this configuration, the controllable linkage and independent rotation switching of the idler roller 3 and the transmission ring 6 can be realized, and the device can freely switch between self-locking take-up and manual adjustment modes. Moreover, the tooth meshing positioning accuracy is high and the locking is firm, which can effectively prevent the teeth from slipping, loosening and moving during operation, and ensure that the secondary line 4 can be accurately fixed after length adjustment, reducing the problem of spontaneous loosening and lengthening. The whole assembly and disassembly are convenient, which is convenient for later maintenance and repair. Spring 706 is in a normally compressed state. Under normal conditions, the elastic force of spring 706 pushes locking ring 701 to adhere to transmission ring 6, keeping the external teeth 703 and internal teeth 602 in a stable meshing locked state. Pulling knob 702 outward can compress spring 706 and drive locking ring 701 to slide axially, causing internal and external teeth 703 to separate and releasing the locked state between transmission ring 6 and roller 3. With this setting, automatic locking is achieved by relying on the normal preload of spring 706, eliminating the need for manual locking and reset. The operation is simple and labor-saving, effectively reducing the difficulty of operation for construction personnel. At the same time, the elastic buffer structure of spring 706 can buffer the instantaneous tensile impact during operation, avoid hard collision and wear of teeth, extend the service life of locking component 7, and improve structural durability. In this application, the retaining rod 704 and the main shaft 301 preferably adopt a non-circular fit, key connection, spline connection or other limiting connection method that can transmit torque, so that the retaining rod 704 can reliably drive the idler roller 3 to rotate synchronously when rotating, so as to achieve stable adjustment of the length of the secondary line 4. It also includes a constraint component 8, which is mounted inside the positioning frame 2 and arranged parallel to each other above the idler roller 3. The outer side of the positioning ring 202 is provided with a retaining groove 202a to accommodate the end of the coil spring 5. The positioning frame 2 has a receiving groove 205 through it to accommodate the constraint component 8. A vertically extending slide rod 206 is fixed in the receiving groove 205. The positioning ring 202 achieves precise positioning and assembly through the retaining groove 202a, which can improve the problem of axial displacement and loosening displacement of the positioning ring 202 and coil spring 5 during long-term torsion, and ensure the long-term stable operation of the elastic energy storage mechanism. At the same time, the structure of the dedicated receiving groove 205 and slide rod 206 can provide vertical precision guidance for the constraint component 8, ensuring that the constraint roller 802 is always pressed vertically downward, avoiding offset and jamming, and ensuring the accuracy of the line positioning. The constraint assembly 8 includes a receiving frame 801 with a vertically sliding fit receiving groove 205. A sliding sleeve 805 is vertically slidably mounted on the top of the receiving frame 801. A constraint roller 802 is rotatably mounted on the outside of the receiving frame 801. The sliding sleeve 805 is vertically slidingly fitted with a sliding rod 206. A compression spring 804 is sleeved on the sliding rod 206. The compression spring 804 abuts against the receiving frame 801 and the top of the receiving groove 205. Under normal conditions, the compression spring 804 drives the constraint roller 802 to press down and adhere to the support roller 3, so that the constraint roller 802 and the support roller 3 cooperate to clamp the secondary line 4, and limit and guide the routing of the secondary line 4. Both ends of the constraint roller 802 are provided with The retaining ring 803 is used to prevent the secondary wire 4 from coming out of the space between the constraint roller 802 and the support roller 3. This design allows the elastic adaptive clamping characteristics of the compression spring 804 to be utilized, so that the constraint roller 802 can adaptively and finely adjust the pressing height in real time according to the winding thickness and tension of the secondary wire 4. This can maintain a tight clamping state with the secondary wire 4, which can prevent the secondary wire 4 from slipping or deviating during winding and unwinding, and can also avoid wear on the cable sheath caused by hard compression. This ensures smooth winding and unwinding of the secondary wire 4 and reduces jamming. At the same time, the double roller clamping structure can straighten and correct the cable, eliminate cable twisting and deformation, and further improve the neatness of the winding. In this application, the constraint roller 802 is preferably connected to the receiving frame 801 by a damped rotation mounting method. While maintaining the elastic clamping effect on the secondary wire 4, it can rotate slowly with the movement of the cable to reduce friction and wear between the cable and the constraint roller 802 and maintain a stable guiding effect. For example, the connection between the constraint roller 802 and the receiving frame 801 is a friction bushing fit, and the constraint roller 802 is a rubber roller. Thus, the receiving frame 801 supports the constraint roller 802 to rotate slowly under rotational force to clamp and position the secondary wire 4. It also includes an adaptive mounting component, which is installed on the top of the positioning frame 2. The adaptive mounting component includes two symmetrically arranged mounting brackets 9, a synchronous belt 10, and an adapter pulley 11. The pulley 11 is rotatably mounted on both sides of the top of the positioning frame 2. The synchronous belt 10 is wrapped around the outside of the two sets of pulleys 11. The two sets of mounting brackets 9 are symmetrically fixed on the belt body on both sides of the synchronous belt 10. The two sets of mounting brackets 9 can achieve reverse synchronous opening and closing sliding with the transmission cooperation of the synchronous belt 10 and the pulley 11, adaptively adjusting the distance between the two sets of mounting brackets 9 to adapt to the suspension installation of welded fixed structures of different sizes. By adopting the reverse synchronous transmission structure of the synchronous belt 10 and the pulley 11, it can ensure that the opening and closing displacement of the two sets of mounting brackets 9 is consistent, achieving centering adaptive adjustment, ensuring that the device is symmetrically stressed and not tilted after suspension, and adapting to fixed bases of different specifications and spacings such as steel beams, steel bars, and formwork supports on construction sites. This improves the versatility of the device, allowing it to be adapted to multiple installation scenarios without replacing parts, and reducing construction costs.

[0034] In this application, the synchronous belt 10 adopts a closed-loop synchronous transmission structure, and the two sets of hook frames 9 are fixed at the relative positions of the synchronous belt 10, so that the two sets of hook frames 9 keep moving in opposite directions synchronously during the operation of the synchronous belt 10, thereby ensuring that the device always makes adaptive adjustments based on the center of the positioning frame 2, and improving the force balance after suspension installation.

[0035] The top side of the positioning frame 2 is provided with a sliding groove 203 for supporting the sliding of the hanging frame 9, and the two sides of the positioning frame 2 are provided with rotating seats 204 for supporting the rotation of the pulley 11. The hanging frame 9 includes an integrally fixed overlapping section 901, a connecting section 902 and a mounting buckle 903. The overlapping section 901 is used to hang and support on an external fixed structure. The connecting section 902 vertically connects the overlapping section 901 and the mounting buckle 903. The mounting buckle 903 is fixedly connected to the synchronous belt 10.

[0036] Specifically, the mounting buckle 903 has an outer bolt hole 903a, and the synchronous belt 10 has a corresponding inner bolt hole 10a. By inserting fastening bolts into the two sets of bolt holes, the synchronous belt 10 is fastened to the outer mounting buckle 903. A shaft 904 is vertically fixed at the bottom of the mounting buckle 903. The special slide 203 and the rotating seat 204 provide stable support for the sliding of the hanger 9 and the rotation of the pulley 11, respectively, reducing frictional resistance and preventing jamming. The one-piece molded hanger 9 has high overall structural strength and is not easily deformed. Through the segmented structural design, it realizes the functions of hanging support, sliding connection, and tension assembly, with a reasonable structural layout and high functional integration.

[0037] A spring element 12, which is a rubber elastic ring, is tensioned between the two sets of hanger brackets 9 and their shafts 904. The spring element 12 continuously applies a pulling force towards the two sets of shafts 904, so that the two sets of hanger brackets 9 maintain an inward tightening tendency under normal conditions, ensuring that the hanger brackets 9 fit tightly against the fixed structure after suspension installation. Through the continuous pre-tightening force of the spring element 12, the hanger brackets 9 achieve self-adaptive clamping and fixing of the structure, which can effectively eliminate installation gaps, avoid loosening, shaking and displacement of the device caused by welding vibration, ensure the stable suspension of the device, and also adapt to clamping and fixing of slightly irregular structures, further expanding the installation adaptability range.

[0038] The connecting section 902 extends vertically through the slide groove 203, and the connecting section 902 slides horizontally with the positioning frame 2 through the slide groove 203. A limiting slip ring 905 is fixed on the outer side of the connecting section 902 to prevent the hook frame 9 from detaching from the positioning frame 2. The limiting slip ring 905 can form an axial anti-detachment limiting structure, effectively limiting the hook frame 9 from sliding out of the slide groove 203, eliminating the problems of component detachment and loss, and mechanism failure, greatly improving the safety and structural reliability of the device, and at the same time effectively offsetting the external force pulling during operation, improving the overall structural stability.

[0039] A welding method based on a welding apparatus for building construction includes the following steps: S1. Adaptive Suspension Installation: Based on the dimensions and spacing of the fixed structure in the welding area of ​​the building construction site, two sets of hanging brackets 9 are manually spread out to both sides. Under the transmission cooperation of the synchronous belt 10 and the pulley 11, the two sets of hanging brackets 9 achieve synchronous sliding in opposite directions, autonomously adapting to the installation spacing of the current fixed structure. The overlapping section 901 at the top of the hanging bracket 9 is stably hung on the steel beam, bracket and other external fixed structure in the welding area. After the external force of spreading is removed, the elastic element 12 between the two sets of shafts 904 continues to pull the two sets of hanging brackets 9 together by its own elastic recoil force, so that the hanging brackets 9 tightly hug the outer wall of the fixed structure and eliminate the installation gap. At the same time, with the sliding limit of the slide groove 203 and the anti-detachment limit of the limit ring 905, the hanging bracket 9 is ensured to be installed without deviation or detachment, and the whole device is quickly completed without drilling and is detachable for suspension fixing. It is compatible with different specifications of installation base, and the installation is convenient and stable. S2. Power-accumulating wire release welding: After the device is installed, under normal conditions, the inner and outer teeth 703 of the locking component 7 are in a locked state, and the idler roller 3, transmission ring 6, and coil spring 5 are linked. The construction worker holds the welding gun 1 and pulls it outward. The welding gun 1 drives the secondary wire 4 to be pulled outward at a uniform speed, thereby driving the idler roller 3 and transmission ring 6 to rotate synchronously in the forward direction. During the rotation, the positioning ring 202 remains fixed, forcing the coil spring 5 between the two to undergo elastic torsional deformation and continuously accumulate elastic potential energy. According to the distance requirements of the on-site welding operation and the location of the construction point, the secondary wire 4 of the corresponding length is flexibly pulled out, and the constraint roller 802 and Under the elastic clamping and limiting action of the idler roller 3, the secondary wire 4 is smoothly discharged without deviation or jamming, and the construction personnel can carry out welding construction work for steel structure, steel reinforcement components and other building construction. When the welding construction of a single section is completed and there is no need to continue the discharge operation, the welding gun 1 is released, and the coil spring 5, which has accumulated elastic potential energy, automatically releases energy and resets, driving the transmission ring 6, locking component 7 and idler roller 3 to rotate synchronously in the opposite direction, automatically tidying up and winding the secondary wire 4 that is pulled outward, so that the welding gun 1 automatically resets and is close to the position of the positioning frame 2, effectively avoiding the secondary wire 4 and welding gun 1 from being scattered, dragging on the ground, or tangling and piling up. If it is necessary to maintain the unfolded length, then execute S3. S3, Secondary Line 4 Length Adjustment: For different construction conditions such as close-range welding, high-altitude long-distance welding, and welding in confined spaces, when it is necessary to reset the fixed extension length of the secondary line 4 on the welding torch 1 side, the secondary line 4 can be adjusted in a controllable manner. First, manually pull the knob 702 outward to drive the locking ring 701 to slide axially, compressing the end spring 706 and completely separating the outer teeth 703 of the locking ring 701 from the inner teeth 602 of the transmission ring 6, releasing the synchronous linkage locking relationship between the idler roller 3, the transmission ring 6, and the coil spring 5, so that the idler roller 3 is in an independently rotatable state. Then, rotate the knob 702, which drives the idler roller 3 to rotate independently in both forward and reverse directions through the retaining rod 704. During operation, the secondary wire 4 is precisely adjusted by the elastic clamping action of the upper constraint roller 802. Utilizing the motion principle of winding one side and unwinding the secondary wire 4 on the other side of the roller 3, the extension length of the secondary wire 4 at the welding gun 1 end is precisely adjusted. After the secondary wire 4 is adjusted to the target working length suitable for the current construction conditions, the tension on the knob 702 is released, the spring 706 returns to its original position and pushes the locking ring 701 to axially engage with the transmission ring 6. The internal and external teeth 703 re-engage and lock, fixing the rotation position of the roller 3 and completing the length locking of the secondary wire 4. This ensures that the length of the secondary wire 4 is fixed during subsequent welding operations, reduces spontaneous expansion and contraction, and adapts to diverse construction needs.

[0040] By setting up an elastic energy storage mechanism in conjunction with the locking component 7, the automatic energy storage and release of the secondary wire 4 and the elastic reset and retraction are realized. In the normal locked state, pulling the welding gun 1 can drive the roller 3 and the transmission ring 6 to rotate and twist the coil spring 5 to store energy, flexibly pulling out the cable to adapt to the welding operation distance. After the welding is completed and the welding gun 1 is released, the coil spring 5 can automatically release the force to drive the roller 3 to reverse, completing the automatic retraction and reset of the secondary wire 4. This avoids the problems of the secondary wire 4 being scattered and piled up, tangled and knotted, dragging on the ground and being damaged by pressure, and reduces safety hazards such as cable sheath damage, line aging, leakage and short circuit.

[0041] When it is necessary to adjust the unfolded length of the secondary wire 4 on the welding torch 1 side without retracting it, pull the knob 702 to compress the spring 706, so that the outer teeth 703 of the locking ring 701 and the inner teeth 602 of the transmission ring 6 are separated, the locking of the idler roller 3 and the transmission ring 6 is released, and the idler roller 3 can be rotated independently by rotating the knob 702. With the help of the constraint component 8, the one-sided winding and unfolding of the secondary wire 4 can be controlled and adjusted. The extension length of the secondary wire 4 can be adjusted and fixed arbitrarily according to different construction scenarios such as close-range welding, high-altitude long-distance welding, and narrow space welding.

[0042] The constraint roller 802 always elastically presses down against the surface of the idler roller 3, forming an elastic clamping structure for the cable. This structure can limit, guide, and compress the wound secondary cable 4, effectively preventing problems such as deviation, misalignment, unwinding, and jamming during the winding and unwinding process. It also avoids local twisting, bending, and deformation of the cable over long-term use. At the same time, the elastic compression structure can adapt to changes in cable thickness and winding and unwinding tension, preventing the cable from falling off due to excessive looseness or being pulled too tightly and damaging the terminals. This improves the smoothness of the winding and unwinding process of the secondary cable 4 and the stability of the equipment operation.

[0043] The adaptive mounting component is adopted, relying on the transmission cooperation of pulley 11 and synchronous belt 10 to realize the reverse synchronous opening and closing sliding of two sets of mounting frames 9, adaptively adjusting the installation spacing of the two sets of mounting frames 9, adapting to the fixed installation structure of different sizes, different spacings and different shapes on the construction site, and solving the problems of fixed installation size and poor versatility of traditional welding auxiliary devices.

[0044] It should be noted that the connection methods, installation methods, and cooperation relationships between the various mechanisms in this application can all be achieved using conventional fixed connections, detachable connections, rotating connections, sliding connections, limiting connections, or elastic connections in the art, as long as the corresponding structural support, motion guidance, power transmission, limiting constraint, and reset functions can be achieved. It is not limited to the specific structural form shown in this embodiment. The size, shape, quantity, relative position, and installation direction of each component can be conventionally adjusted according to different specifications of welding equipment, secondary line type 4, and the installation conditions of the building construction site. The materials, manufacturing processes, protection methods, and surface treatment methods of each load-bearing component, guiding component, elastic component, transmission component, and limiting component can all be determined according to the actual situation. The appropriate components should be selected based on the actual usage environment, as long as they meet the corresponding requirements for structural strength, wear resistance, corrosion resistance, insulation, and reliability. For standard parts, fasteners, bearings, elastic elements, transmission elements, and other general mechanical structures not described in detail in the specification, they can be configured and implemented using techniques known in the art. Furthermore, the various mechanisms in this application can be set up independently or modularly integrated or partially combined according to actual application needs. Their specific structural forms and implementation methods do not constitute a limitation on the scope of protection of this application. Without departing from the technical concept of this application, any equivalent substitutions, conventional improvements, or structural adjustments made by those skilled in the art based on the disclosure of this application should fall within the scope of protection of this application.

[0045] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A welding device for building construction, characterized in that, include: The positioning frame (2) is the mounting base of the whole device. The bottom end of the positioning frame (2) is provided with a shaft hole (201) through which the shaft hole (201) is installed. The shaft hole (201) is equipped with a roller (3) that can rotate freely. The outer wall of the roller (3) is wound with secondary wire (4). The outer end of the secondary wire (4) is fixedly connected to the welding torch (1) for welding operations. The wire is wound and unwound as the roller (3) rotates forward and backward. The elastic energy storage mechanism is fixedly assembled at the corresponding shaft hole (201) on the outside of the positioning frame (2), including a positioning ring (202), a coil spring (5) and a transmission ring (6). The positioning ring (202) is limited and fixed at the port of the shaft hole (201) on the outside of the positioning frame (2). The transmission ring (6) is coaxially rotated and sleeved on the outside of the positioning ring (202) and extends to the outer end of the roller (3) that passes through the positioning frame (2). The coil spring (5) is axially arranged between the positioning ring (202) and the transmission ring (6), and the two ends of the coil spring (5) are fixedly connected to the positioning ring (202) and the transmission ring (6) respectively. It generates torsional energy storage as the transmission ring (6) rotates.

2. The welding device for building construction according to claim 1, characterized in that, The roller (3) is provided with a main shaft (301) passing through the shaft hole (201) at its end. The two ends of the main shaft (301) are respectively fixed with end caps (303) and tail caps (305). The end caps (303) have a retaining groove (304) on their inner side. The secondary thread (4) is wound and stored in the roller area between the positioning frame (2) and the tail cap (305) of the main shaft (301) to axially limit the secondary thread (4) and prevent the secondary thread (4) from unwinding.

3. The welding device for building construction according to claim 2, characterized in that, It also includes a locking assembly (7), which includes a locking ring (701) and a knob (702). The knob (702) is fixed to the outer end of the locking ring (701). A retaining rod (704) passing through the retaining groove (304) is fixed in the middle of the knob (702). A limit nut (705) is fixed at the outer end of the retaining rod (704). A spring (706) is sleeved on the retaining rod (704), and the two ends of the spring (706) abut against the end cap (303) and the limit nut (705) respectively. The locking ring (701) is provided with external teeth (703) on the side facing the transmission ring (6). The transmission ring (6) is provided with internal teeth (602) that can mesh and match with the external teeth (703). The engagement and disengagement of the internal and external teeth (703) are realized by axial sliding of the locking assembly (7).

4. The welding device for building construction according to claim 3, characterized in that, The spring (706) is in a normally compressed state. Under normal conditions, the spring (706) pushes the locking ring (701) to fit against the transmission ring (6), so that the outer teeth (703) and the inner teeth (602) maintain a stable meshing and locking state. Pulling the knob (702) outward can compress the spring (706) and drive the locking ring (701) to slide axially, so that the inner and outer teeth (703) separate, and release the locking state between the transmission ring (6) and the roller (3).

5. A welding device for building construction according to claim 4, characterized in that, It also includes a constraint component (8), which is mounted inside the positioning frame (2) and arranged parallel to each other above the roller (3). The outer side of the positioning ring (202) is provided with a retaining groove (202a) for receiving the end of the coil spring (5) to be inserted, and the positioning frame (2) has a receiving groove (205) for receiving the constraint component (8) through it. A vertically extending slide rod (206) is fixed in the receiving groove (205). The constraint assembly (8) includes a receiving frame (801) with a vertical sliding fit receiving groove (205). A sliding sleeve (805) is vertically slidably mounted on the top of the receiving frame (801). A constraint roller (802) is rotatably mounted on the outside of the receiving frame (801). The sliding sleeve (805) and the sliding rod (206) are vertically sliding fit. A compression spring (804) is provided on the outer sleeve of the sliding rod (206). The compression spring (804) abuts between the receiving frame (801) and the top of the receiving groove (205). Under normal conditions, the compression spring (804) drives the constraint roller (802) to press down and fit against the support roller (3), so that the constraint roller (802) and the support roller (3) cooperate to clamp the secondary line (4) and limit and guide the secondary line (4) to run.

6. A welding device for building construction according to claim 5, characterized in that, It also includes an adaptive mounting component, which is installed on the top of the positioning frame (2) and includes two sets of symmetrically arranged mounting brackets (9), a synchronous belt (10) and an adapter pulley (11). The pulley (11) is rotatably installed on both sides of the top of the positioning frame (2). The synchronous belt (10) is wrapped around the outside of the two sets of pulleys (11). The two sets of mounting brackets (9) are symmetrically fixed on the belt bodies on both sides of the synchronous belt (10). The two sets of mounting brackets (9) can realize reverse synchronous opening and closing sliding with the transmission cooperation of the synchronous belt (10) and the pulley (11), adaptively adjusting the distance between the two sets of mounting brackets (9) to adapt to the suspension installation of welded fixed structures of different sizes.

7. A welding device for building construction according to claim 6, characterized in that, The top side of the positioning frame (2) is provided with a sliding groove (203) for supporting the sliding of the hook frame (9), and the two sides of the positioning frame (2) are provided with rotating seats (204) for supporting the rotation of the pulley (11). The hook frame (9) includes an integrally fixed overlapping section (901), a connecting section (902) and a mounting buckle (903). The overlapping section (901) is used to hang and support on an external fixed structure. The connecting section (902) vertically connects the overlapping section (901) and the mounting buckle (903). The mounting buckle (903) is fixedly connected to the synchronous belt (10). The bottom of the mounting buckle (903) is vertically fixed with a tie shaft (904).

8. A welding apparatus for building construction according to claim 7, characterized in that, A spring element (12) is tensioned between the two sets of hanging brackets (9) and their shafts (904). The spring element (12) continuously applies a pulling force to the two sets of shafts (904) in opposite directions, so that the two sets of hanging brackets (9) maintain an inward tightening trend under normal conditions, ensuring that the hanging brackets (9) fit tightly with the fixed structure after suspension installation.

9. A welding device for building construction according to claim 8, characterized in that, The connecting section (902) extends vertically through the slide groove (203), and the connecting section (902) slides horizontally with the positioning frame (2) through the slide groove (203). A limiting slip ring (905) is fixed on the outside of the connecting section (902) to limit the hanging frame (9) from disengaging from the positioning frame (2).

10. A welding method for a welding apparatus used in building construction, characterized in that, The application of the welding apparatus for building construction as described in claim 9 includes the following steps: S1. Adaptive suspension installation: Spread out the two sets of hanging brackets (9) on the top of the positioning frame (2), hang the hanging brackets (9) on the fixed structure of the welding area of ​​the building construction, and tighten the two sets of hanging brackets (9) through the elastic parts (12) between the beam shafts (904) to complete the overall suspension and fixation of the device; S2, Power-accumulating wire release welding: Pull the welding gun (1) to pull the secondary wire (4), drive the roller (3) and transmission ring (6) to rotate synchronously, and the torsion coil spring (5) to accumulate power. Pull out the secondary wire (4) of the corresponding length according to the welding operation requirements, and carry out welding construction. After the construction is completed, the coil spring (5) pulls the transmission ring (6), locking component (7) and roller (3) to rotate and reset, and rewind the secondary wire (4) on one side of the welding gun (1). If it is necessary to maintain the unfolded length, then execute S3. S3, Secondary line (4) length adjustment: Pull the knob (702) outward to separate the locking component (7) from the teeth of the transmission ring (6), release the synchronous lock of the transmission ring (6), rotate the knob (702) to drive the roller (3) to rotate independently, and with the clamping and limiting effect of the constraint roller (802), adjust the secondary line (4) on the welding gun (1) side to extend and retract. After adjusting to the appropriate working length, release the knob (702) to reset the locking component (7).

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