Steel structure net rack welding device
By designing an anti-porosity welding torch mechanism and a welding monitoring camera, the problem of porosity under the influence of wind and the difficulty of detecting welding defects have been solved, enabling high-quality and safe welding of steel structure space frames and improving operational convenience and efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING JIAHENG GUANGTAI CONSTR ENG CO LTD
- Filing Date
- 2025-05-19
- Publication Date
- 2026-04-21
AI Technical Summary
When welding steel space frames outdoors or in windy environments, the wind can disperse the protective gas, causing porosity and affecting weld quality. Traditional welding lacks intuitive monitoring methods, making it difficult to detect welding defects. Weld slag falling during welding in special postures poses a safety hazard and increases the difficulty of operation.
The design incorporates a porosity-preventing welding torch mechanism, using a tempered glass cover to enclose the torch nozzle and the tip of the welding wire. A welding monitoring camera is installed to monitor the welding process in real time, and a three-axis robotic arm structure is used to adjust the position and posture of the welding torch. An integrated display screen controls the welding parameters.
It effectively prevents porosity formation, improves welding quality and safety, ensures consistent welding quality, reduces rework, and enhances operational convenience and efficiency.
Smart Images
Figure CN224143790U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of welding equipment technology, specifically to a steel structure space frame welding device. Background Technology
[0002] When welding steel space frames outdoors or in windy environments, the wind can disperse the protective gas, preventing the gas in the molten pool from escaping effectively and causing porosity in the weld. This not only affects the aesthetics of the weld but, more seriously, reduces its strength and sealing, threatening the overall quality and service life of the steel space frame.
[0003] Furthermore, in traditional welding processes, operators often rely on experience to judge welding quality, lacking intuitive monitoring methods. This makes it difficult to detect problems during welding in a timely manner, such as incomplete fusion and cracks, increasing the workload of subsequent rework and repairs. Secondly, when welding in special positions such as overhead or downward welding, weld slag is prone to falling off, posing safety hazards to operators and the surrounding environment. At the same time, these special welding positions also increase the difficulty of operation and affect the welding quality. Utility Model Content
[0004] The purpose of this utility model is to provide a technical solution for a steel structure space frame welding device to overcome the shortcomings mentioned in the background art. To address the drawbacks and defects described in the background art, this technical solution includes the following:
[0005] It includes a pore-proof welding torch mechanism, and a welding control handle is fixedly connected to the rear end face of the pore-proof welding torch mechanism.
[0006] The anti-porosity welding torch mechanism includes a welding torch body, a welding wire fixedly connected to the left side wall of the welding torch body, and a tempered glass cover fixedly connected to the nozzle position of the welding torch body. A welding monitoring camera is installed on the right side surface of the welding torch body. The tempered glass cover is in the shape of a hollow frustum and covers the area of the nozzle and the tip of the welding wire. A sunglasses lens is fixedly connected to the camera port of the welding monitoring camera.
[0007] The welding control handle includes an internally threaded tube, a base fixedly connected to the front end of the internally threaded tube, and a screw inserted into the rear end of the internal cavity of the internally threaded tube by screwing. A display screen is fixedly connected to the rear side of the outer ring surface of the screw. A connecting arm is provided at the front end of the base, and an execution arm is provided at the front end of the connecting arm. A micro robot joint motor is installed at the connection position between the front end of the base and the rear end of the connecting arm, and at the connection position between the front end of the connecting arm and the rear end of the execution arm, so that the base, the execution arm, the micro robot joint motor and the connecting arm can form a three-axis robotic arm structure.
[0008] As a preferred embodiment of this utility model: a bracket is fixedly connected to the right side surface of the welding torch body, and the rear end face of the welding monitoring camera is locked to the surface of the bracket by screws.
[0009] As a preferred embodiment of this utility model: the image recording head of the welding monitoring camera faces the area where the nozzle of the welding gun body contacts the front end of the welding wire, and is used to capture images during the welding process.
[0010] As a preferred embodiment of this utility model: the shooting port of the welding monitoring camera is fixedly connected to two protrusions, and the outer surface of the sunglasses lens is embedded between the protrusions.
[0011] As a preferred embodiment of this utility model: a ceramic ring is fixedly connected to the outer surface of the nozzle of the welding gun body, and a round hole for the ceramic ring to be embedded is opened on the rear end face of the tempered glass cover.
[0012] As a preferred embodiment of this utility model, the tempered glass cover has a through hole for the welding wire to pass through.
[0013] As a preferred embodiment of this utility model: the outer ring of the nozzle of the welding gun body is connected to the welding wire through a wire feeding bracket.
[0014] As a preferred embodiment of this utility model, the front end of the actuator arm is fixedly connected to the rear end face of the welding gun body.
[0015] As a preferred embodiment of this utility model: a longitudinal handle is fixedly connected to the rear end face of the screw, and a button for controlling the operation of the welding torch body is provided on the outer ring surface of the longitudinal handle, and a knob for controlling the operation of the joint motor of the micro robot is also provided.
[0016] As a preferred embodiment of this utility model: a data transmission line is connected between the image transmission end of the welding monitoring camera and the image receiving end of the display screen, and a horizontal handle is fixedly connected to the left side wall of the internally threaded tube, with a layer of rubber anti-slip sleeve covering the outer surface of the horizontal handle.
[0017] The technical effects and advantages provided by this utility model in the above technical solution are as follows:
[0018] 1. In the design of the anti-porosity welding torch mechanism, the tempered glass cover is in the shape of a hollow frustum, covering the area of the welding torch nozzle and the front end of the welding wire. This not only helps to prevent wind and reduce porosity problems caused by wind during the welding process, but also improves the welding quality.
[0019] 2. The tempered glass cover also plays a role in preventing weld slag from falling during the welding process, especially when welding in an inverted position, which can effectively protect the operator and the surrounding environment and enhance work safety.
[0020] 3. The welding monitoring camera installed on the welding torch body has its image recording head facing the welding area, which can capture images of the welding process in real time. This helps operators to monitor the welding status in a timely manner, adjust welding parameters, and ensure welding quality.
[0021] 4. The welding control handle adopts a three-axis robotic arm structure composed of components such as an internally threaded tube, base, screw, connecting arm and execution arm. Combined with a micro robot joint motor, the welding torch can flexibly adjust its position and posture to adapt to different welding needs, thus improving the flexibility and efficiency of welding operations.
[0022] 5. The welding control handle integrates a display screen to show the images captured by the welding monitoring camera. At the same time, the rear end of the screw is also equipped with buttons and knobs to control the operation of the welding torch and the operation of the micro robot joint motor, so that the operator can control all the functions with one hand, improving the convenience and efficiency of operation. Attached Figure Description
[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.
[0024] Figure 1 A schematic diagram of the overall structure of the steel space frame welding mechanism;
[0025] Figure 2 This is a schematic diagram of the structure of a laser welding gun;
[0026] Figure 3 This is a schematic diagram of welding a surveillance camera;
[0027] Figure 4 This is a schematic diagram of the welding control handle.
[0028] Explanation of reference numerals in the attached figures:
[0029] 1. Anti-porosity welding torch mechanism; 11. Welding torch body; 12. Welding monitoring camera; 13. Ceramic ring; 14. Tempered glass cover; 15. Welding wire; 16. Bracket; 17. Sunglasses lens; 2. Welding control handle; 21. Internally threaded tube; 22. Base; 23. Actuating arm; 24. Micro robot joint motor; 25. Connecting arm; 26. Horizontal handle; 27. Screw; 28. Vertical handle; 29. Display screen. Detailed Implementation
[0030] To provide a clearer explanation and description of the technical solution and implementation of this utility model, several preferred specific embodiments for implementing the technical solution of this utility model are introduced below.
[0031] The following description is exemplary in nature and is not intended to limit the scope, application, or use of this disclosure. It should be understood that in all these figures, the same or similar reference numerals indicate the same or similar parts and features. The figures are merely schematic representations of the concept and principles of embodiments of this disclosure and do not necessarily show the specific dimensions and scale of each embodiment. Specific details or structures of embodiments of this disclosure may be exaggerated in particular portions of certain figures. The disclosures of various publications, patents, and published patent specifications cited herein are incorporated herein by reference in their entirety. The technical solutions of this utility model will be clearly and completely described below in conjunction with embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model.
[0032] The overall structure is described below:
[0033] The device consists of two main parts: an anti-porosity welding torch mechanism 1 and a welding control handle 2. The anti-porosity welding torch mechanism 1 is connected to the three-axis robotic arm structure of the welding control handle 2 via an actuator arm 23, forming an integrated system that allows for flexible adjustment of the welding angle.
[0034] The welding torch body 11 adopts a standard MIG / MAG welding torch structure, with a ceramic ring 13 welded to the outer ring of the nozzle, and a tempered glass cover 14 nested on the outer side of the ceramic ring. The tempered glass cover 14 is in the shape of a hollow frustum, with a through hole at the front end for the welding wire 15 to extend out, and the rear end is fixed to the ceramic ring 13 by an interference fit through a round hole, forming a sealed space to reduce gas interference in the welding area.
[0035] Welding monitoring camera 12: Fixed to the right side of the welding torch body via bracket 16, the camera lens faces the contact area between the nozzle and the welding wire. A detachable sunglasses lens 17 is installed in front of the lens, which is fixed by protrusions on both sides to effectively filter the strong welding light. The camera is connected to the display screen 29 via a data transmission cable to realize real-time monitoring of the welding process.
[0036] Welding wire guiding structure: Welding wire 15 enters from the left side of the welding gun body through the wire feed bracket, extends through the internal through hole of the tempered glass cover 14 to the welding point, and ensures that the wire feed path is consistent with the direction of shielding gas injection.
[0037] Robotic arm structure:
[0038] Three-axis drive: The base 22, connecting arm 25, and actuator arm 23 are connected in series via microrobot joint motors 24 to form an XYZ three-axis motion system. The joint motors 24 are harmonic reduction motors, supporting ±180° rotation.
[0039] Adjustment mechanism: The internal threaded tube 21 and the screw 27 are connected by a thread to adjust the overall length of the robotic arm. Rotating the longitudinal handle 28 allows for manual fine adjustment of the welding gun position, with an adjustment range of 0-50mm.
[0040] Control module: The longitudinal handle 28 integrates the welding gun start / stop button, wire feed speed knob and robotic arm motion mode switching key; the transverse handle 26 is covered with a corrugated rubber anti-slip sleeve, and a pressure sensor is embedded in the inside, which automatically activates the welding gun protection mechanism when the grip force exceeds the threshold.
[0041] Display module: The display screen 29 is a 5-inch LCD touch screen that displays welding monitoring images and current / voltage parameters in real time, and supports welding path programming operations.
[0042] The workflow is as follows:
[0043] The operator holds the horizontal handle 26 and the vertical handle 28 and presets the welding parameters by turning the knob; the robotic arm adjusts the spatial position of the welding torch according to the preset path or manual control, and the tempered glass cover 14 isolates the external airflow; after welding is started, the monitoring camera 12 captures the image of the molten pool and displays it on the screen 29, and the operator adjusts the posture of the welding torch according to the image; after welding is completed, the screw 27 retracts to reset the robotic arm, and the sunglasses lens 17 can be removed for cleaning.
[0044] Example 1: Welding of large steel structure beams:
[0045] The device is fixed to a mobile welding robot platform. The three-dimensional coordinate path of the crossbeam joint is input through the display screen 29. The robotic arm automatically positions the welding torch to the arc starting point. The tempered glass cover 14 maintains the stability of the protective gas in a strong wind environment. The operator observes the molten pool shape in real time through the monitoring screen and manually fine-tunes the wire feeding speed knob of the longitudinal handle 28 to ensure that the weld penetration is consistent.
[0046] Example 2: Multi-angle welding of pipe fittings in a confined space:
[0047] Remove the horizontal handle 26 and switch to wireless remote control mode to control the robotic arm; utilize the flexibility of the three-axis robotic arm to enable the actuator arm 23 to drive the welding torch into the gap of the pipe fitting at a 45° elevation angle; the frustum-shaped design of the tempered glass cover 14 avoids collision with surrounding pipes, and the sunglasses lens 17 activates the supplementary lighting mode in low-light environments; the front and side images of the weld are displayed in split screen through the display screen 29 to complete the all-position welding of the circumferential weld.
[0048] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.
Claims
1. A steel structure grid welding device, comprising a gas hole prevention welding torch mechanism (1), characterized in that: A welding control handle (2) is fixedly connected to the rear end face of the anti-porosity welding torch mechanism (1); The anti-porosity welding torch mechanism (1) includes a welding torch body (11), a welding wire (15) fixedly connected to the left side wall of the welding torch body (11), and a tempered glass cover (14) fixedly connected to the nozzle position of the welding torch body (11). A welding monitoring camera (12) is installed on the right side surface of the welding torch body (11). The tempered glass cover (14) is in the shape of a hollow frustum and covers the area of the nozzle of the welding torch body (11) and the front end of the welding wire (15). A sunglasses lens (17) is fixedly connected to the camera port of the welding monitoring camera (12). The welding control handle (2) includes an internally threaded tube (21), a base (22) fixedly connected to the front end of the internally threaded tube (21), and a screw (27) inserted into the rear end of the inner cavity of the internally threaded tube (21) by screwing. A display screen (29) is fixedly connected to the rear side of the outer ring surface of the screw (27). A connecting arm (25) is provided at the front end of the base (22). An execution arm (23) is provided at the front end of the connecting arm (25). A micro robot joint motor (24) is installed at the connection position between the front end of the base (22) and the rear end of the connecting arm (25), and at the connection position between the front end of the connecting arm (25) and the rear end of the execution arm (23), for the base (22), execution arm (23), micro robot joint motor (24) and connecting arm (25) to form a three-axis robotic arm structure.
2. The steel structure space truss welding device according to claim 1, characterized in that: A bracket (16) is fixedly connected to the right side surface of the welding torch body (11), and the rear end face of the welding monitoring camera (12) is locked to the surface of the bracket (16) by screws.
3. The steel structure space truss welding device according to claim 1, characterized in that: The image capture head of the welding monitoring camera (12) faces the area where the nozzle of the welding gun body (11) contacts the front end of the welding wire (15), and is used to capture images during the welding process.
4. The steel structure space truss welding device according to claim 1, characterized in that: The shooting port of the welding monitoring camera (12) is fixedly connected to two protrusions, and the outer ring surface of the sunglasses lens (17) is embedded between the protrusions.
5. The steel structure space truss welding device according to claim 1, characterized in that: A ceramic ring (13) is fixedly connected to the outer surface of the nozzle of the welding torch body (11), and a round hole for the ceramic ring (13) is opened on the rear end face of the tempered glass cover (14).
6. The steel structure space truss welding device according to claim 1, characterized in that: The tempered glass cover (14) has a through hole for the welding wire (15) to pass through.
7. The steel structure space truss welding device according to claim 1, characterized in that: The outer ring of the nozzle of the welding torch body (11) is connected to the welding wire (15) through the wire feed bracket.
8. The steel structure space truss welding device according to claim 1, characterized in that: The front end of the actuator (23) is fixedly connected to the rear end face of the welding gun body (11).
9. The steel structure space truss welding device according to claim 1, characterized in that: The screw (27) is fixedly connected to a longitudinal handle (28) on its rear end face. The outer ring surface of the longitudinal handle (28) is provided with a button for controlling the operation of the welding torch body (11) and a knob for controlling the operation of the micro robot joint motor (24).
10. The steel structure space truss welding device according to claim 1, characterized in that: The image transmission end of the welding monitoring camera (12) is connected with the image receiving end of the display screen (29) through a data transmission line, and a lateral handle (26) is fixedly connected to the left side wall of the inner threaded pipe (21), and the outer circle surface of the lateral handle (26) is covered with a rubber anti-skid sleeve.