A welding device for steel structure protective doors

Abstract

This invention discloses a welding device for steel structure protective doors, relating to the field of welding. It includes a welding torch, a slag-cleaning mechanism for cleaning weld seams on the protective door frame, a slag-suction mechanism for drawing in molten slag, and a slag-crushing mechanism for breaking up molten slag that cannot be drawn in. The slag-crushing mechanism includes a crushing chamber with movable crushing components inside. The steel structure protective door welding device of this invention, after the slag-cleaning mechanism removes the weld slag, immediately uses the slag-crushing mechanism to crush the molten slag, so that the blocky slag that cannot be drawn in by the slag-suction mechanism can be formed into powdered slag. Then, the slag can be drawn in and transported. The device has a high degree of integration and is beneficial for improving welding efficiency and achieving a more thorough slag removal during the welding of large workpieces such as protective door frames, especially in multi-layer welding applications that require frequent slag cleaning.

Description

Technical Field

[0001] This invention relates to the field of welding, specifically to a welding device for steel structure protective doors. Background Technology

[0002] Steel structure protective doors are special doors used in civil defense projects, also known as civil defense doors. They are mainly used to effectively isolate and protect against threats such as shock waves, nuclear radiation, and biological and chemical pollution during wartime or emergencies. Civil defense doors have a large structural size.

[0003] For large steel structures like air-raid shelter doors, welding is used in their manufacturing process. Due to special operational requirements, all load-bearing welds must meet at least Class II standards during the welding process. A typical example is the inner frame of an air-raid shelter door, which uses a cross-shaped frame structure made of spliced ​​steel plates. Figure 1 As shown in the structural diagram, during the welding process of the air-raid shelter door frame: The frame of the air-raid shelter door mainly serves a load-bearing function, so the weld standards need to be strictly controlled. When welding thick plates, multiple layers of welding are required. After each layer of welding is completed, the weld needs to be cleaned of slag, which involves a lot of slag cleaning procedures. The small spacing between the inner edges of the cross-shaped frame makes it inconvenient for larger slag removal equipment to operate inside the cross-shaped frame. After the weld slag is removed, if the slag is in block form, it needs to be removed. The suction of block slag generally requires a high-power suction device. The higher the power and the higher the air pressure, the larger the space occupied by the suction device.

[0004] In view of the above, we propose a welding device for steel structure protective doors. Summary of the Invention

[0005] [Technical problems solved] To address the shortcomings of existing technologies, this invention provides a welding device for steel structure protective doors, which has advantages such as slag suction after slag breakage and high integration, and can effectively solve the problems in the background technology.

[0006] [Technical Solution] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a welding device for steel structure protective doors, including a welding torch, a slag cleaning mechanism for cleaning the weld seams on the protective door frame, a slag suction mechanism for sucking up molten slag, and a slag crushing mechanism for crushing molten slag that cannot be sucked up. The slag crushing mechanism includes a crushing chamber, and movable crushing parts are arranged inside the crushing chamber.

[0007] Preferably, the welding torch is an optional setup that can be configured by those skilled in the art for the specific implementation situation; for example, the welding torch is a laser welding torch.

[0008] Preferably, the slag cleaning mechanism can be a brush-type slag cleaning mechanism or a hammer-type slag cleaning mechanism.

[0009] Preferably, the slag suction mechanism is a negative pressure adsorption mechanism, which can suction out the molten slag.

[0010] Preferably, the slag removal mechanism includes at least one force-applying element configured to reciprocate in parallel based on the weld seam.

[0011] Preferably, the force-applying element can be a brush bristle or any rigid body capable of applying force to remove molten slag.

[0012] Preferably, the force-applying component can be controlled by any mechanism capable of driving the force-applying component to move in one direction, such as an electric slide.

[0013] Preferably, the force-applying element is a brush, configured to be perpendicular to the weld when moving downwards to remove slag, and to rotate when moving upwards to sweep the slag into the interior of the crushing chamber.

[0014] Preferably, a rotation drive component is provided on the lowest force-applying component, which can drive the force-applying component to rotate. The rotation drive component can be a motor.

[0015] Preferably, the slag removal mechanism further includes a base frame. Among at least one of the force-applying components, the lowest force-applying component is rotatably connected to the base frame, and a gear is provided on the force-applying component. A rack meshes with the gear, and a sliding component two is fixedly connected to the rack. A sliding seat is provided on the base frame at a location that does not affect the operation of the force-applying component, corresponding to the sliding component two. The slag removal mechanism also includes a locking component for locking the sliding component two.

[0016] Preferably, the base frame is fixedly connected to the linear slide rail.

[0017] Preferably, the gear is fixedly connected to the corresponding force-applying component.

[0018] As a preferred option, since it is necessary to form a relative sliding relationship between the base frame and the rack, a high-density material can be used to make the rack, so that the rack can be located at the bottom end by its own weight during the relative sliding process between the sliding member 2 and the base frame.

[0019] Preferably, the second sliding member is a sliding rod, and the sliding seat is a slip ring that matches the structure of the sliding rod.

[0020] Preferably, the locking element can be implemented by a telescopic drive element such as an electric push rod driving the pin, or it can be made of an electromagnetic lock. The sliding element two has a slot that matches the pin structure, or a friction plate is provided on the telescopic drive element at the contact point with the sliding element two. When the telescopic drive element extends to contact the sliding element two, the friction plate increases the coefficient of friction between the locking element and the sliding element two.

[0021] Preferably, the locking element is fixedly connected to the base frame.

[0022] Preferably, the direction of movement of the crushed component is parallel to the weld seam, and a moving drive mechanism for driving the crushed component and the force-applying component to move synchronously is provided on the crushed component and the force-applying component. The moving drive mechanism includes a rotating component, a sliding component is eccentrically provided on the rotating component, and a linear slide rail cooperates with the sliding component. The linear slide rail is restricted to moving only in one direction and is configured so that the rotating component drives the crushed component and the force-applying component to move synchronously through the sliding component and the linear slide rail during the rotation process.

[0023] Preferably, since the movement direction of the broken component is parallel to the weld, removing slag parallel to the weld direction can avoid scratches, indentations or even microcracks on the weld surface caused by applying force in the vertical direction, which helps to maintain the integrity and surface quality of the weld.

[0024] Preferably, the rotating component is a rotating disk, and the sliding component is a pin, which is connected to the rotating component when it is not movable. For example, it can be a fixed connection or a rotating connection.

[0025] Preferably, the moving drive mechanism further includes a fixed frame, the rotating component is rotatably connected to the fixed frame, and the fixed frame is provided with a second rotating drive component, such as a motor, for driving the rotating component to rotate. The linear slide rail is slidably connected to the fixed frame and can only slide in a straight line.

[0026] Preferably, the lower end of the crushing chamber is open, and a slag inlet is provided on the side of the lower end of the crushing chamber near the force-applying component to allow molten slag to enter. The rack is located on the side of the gear near the force-applying component, so that when the gear moves relative to the rack, the rotation direction of the gear can drive the force-applying component to rotate toward the slag inlet.

[0027] Preferably, the slag suction mechanism includes a cylinder, a piston is slidably connected inside the cylinder, a pipe is provided between the cylinder and the crushing chamber for communication, a one-way valve is provided between the pipe and the cylinder, the one-way valve only allows gas to flow from the pipe to the cylinder, and a one-way valve is also provided on the cylinder to allow gas to flow out of the cylinder.

[0028] Preferably, the cylinder can be fixedly connected to a fixed frame in the moving drive mechanism.

[0029] Preferably, a slag outlet is provided on the crushing chamber, and the slag outlet is connected to the cylinder through a pipe to form a one-way connection.

[0030] Preferably, a flexible element is provided at the location where the slag inlet is opened on the crushing chamber. The flexible element is used to fit the protective door frame to block the molten slag.

[0031] Preferably, the flexible component refers to a flexible component such as a rubber baffle, which allows the molten slag to fall into the negative pressure suction range during the slag removal process.

[0032] Preferably, the piston is fixedly connected to the linear slide rail. Since the crushing component, the force-applying component, and the piston all need to perform reciprocating movement, the mobile drive mechanism can be used to simultaneously control the slag cleaning mechanism, the slag crushing mechanism, and the slag suction mechanism, resulting in higher device integration and a smaller footprint.

[0033] Preferably, the cylinder is coaxially arranged with the crushing chamber and is vertically distributed based on the rotating component, such as... Figure 3 The structure shown uses a moving drive mechanism to synchronously control the slag crushing mechanism and the slag suction mechanism. In this state, the crushing action of the crushing component corresponds exactly to the suction action of the piston component, so that the molten slag can be sucked out from the inside of the crushing chamber in the first time during the crushing process, avoiding the accumulation inside the crushing chamber.

[0034] Preferably, since the crushing chamber and the cylinder are distributed vertically based on the rotating component, the cylinder is in a higher position during the slag processing. As a result, the suction force generated by the cylinder can draw the powdered slag under negative pressure, so as to drive the slag to move effectively, but not to be adsorbed into the cylinder.

[0035] Preferably, a filter screen is installed inside the cylinder to isolate molten slag powder that may enter the cylinder; or, as... Figure 7 The structure shown has an isolation chamber between the cylinder and the crushing chamber for temporarily storing the molten slag.

[0036] [Beneficial Effects] Compared with the prior art, the present invention provides a welding device for steel structure protective doors, which has the following beneficial effects: This steel structure protective door welding device removes weld slag through a slag cleaning mechanism, followed by a slag crushing mechanism to break the slag into powder, so that the blocky slag that cannot be sucked and transferred by the slag suction mechanism can be formed into powdery slag. Then, the slag can be sucked and transferred. The device has a high degree of integration and is beneficial to improving welding efficiency and achieving a more thorough slag removal when welding large workpieces such as protective door frames, especially in multi-layer welding applications that require frequent slag cleaning. Attached Figure Description

[0037] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the inner frame of a steel structure protective door in the prior art.

[0038] Figure 2 This is a schematic diagram of the overall structure of a steel structure protective door welding device according to the present invention.

[0039] Figure 3 This is a front view of a steel structure protective door welding device according to the present invention.

[0040] Figure 4 This is a structural cross-sectional diagram of the slag removal mechanism and slag crushing mechanism in a steel structure protective door welding device of the present invention.

[0041] Figure 5 This is a schematic diagram of the moving drive mechanism in a steel structure protective door welding device of the present invention.

[0042] Figure 6 This is a schematic diagram of a preferred embodiment of the slag removal mechanism in a steel structure protective door welding device of the present invention.

[0043] Figure 7 This is a schematic diagram of the operating state of the force-applying component in a steel structure protective door welding device of the present invention.

[0044] Figure 8 This is a structural cross-sectional diagram of the slag suction mechanism in a steel structure protective door welding device of the present invention.

[0045] In the picture: 001. Protective door frame; 1. Slag cleaning mechanism; 2. Slag crushing mechanism; 3. Slag suction mechanism; 4. Mobility drive mechanism; 11. Force-applying component; 12. Rotation drive component one; 13. Flexible component; 111. Base frame; 112. Gear; 113. Rack; 114. Sliding component 2; 115. Sliding seat; 116. Locking component; 21. Crushing chamber; 22. Crushing components; 23. Slag inlet; 24. Slag outlet; 31. Cylinder body; 32. Piston assembly; 33. Check valve; 34. Pipe fittings; 41. Rotating component; 42. Sliding component one; 43. Linear guide rail; 44. Rotational drive component two. Detailed Implementation

[0046] To make the technical means, creative features, achieved objectives, and functional effects of this invention readily understandable, the invention will be further described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are merely some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0047] To address the shortcomings of existing technologies, such as Figure 2 , 3 As shown, the present invention provides a welding device for a steel structure protective door, including a welding torch, a slag cleaning mechanism 1 for cleaning the weld seam on the protective door frame 001, a slag suction mechanism 3 for sucking up molten slag, and a slag crushing mechanism 2 for crushing molten slag that cannot be sucked up.

[0048] Among them, the welding torch is an optional setup for those skilled in the art to use in actual implementation situations; for example, the welding torch is a laser welding torch. In this embodiment, the slag cleaning mechanism 1 can be a brush-type slag cleaning mechanism or a hammer-type slag cleaning mechanism. The slag suction mechanism 3 is a negative pressure adsorption mechanism that can suck out molten slag.

[0049] It should be noted that during the welding process of the protective door frame 001, if it is necessary to remove the weld slag on the protective door frame 001, the welding device is positioned with the slag removal mechanism 1 corresponding to the weld position on the protective door frame 001 after welding is completed. Then, the slag on the protective door frame 001 is removed by the slag removal mechanism 1. After removal, the removed slag is simultaneously crushed by the slag crushing mechanism 2. Because the slag is crushed into powder rather than block, the powdered slag can be more effectively adsorbed by the slag suction mechanism 3 compared to block slag. This constitutes a complete slag removal process on the protective door frame 001.

[0050] It is worth mentioning that after the slag removal mechanism 1 removes the weld slag, the slag crushing mechanism 2 then crushes the slag, so that the blocky slag that cannot be sucked and transferred by the slag suction mechanism 3 can be formed into powdered slag. Then the slag can be sucked and transferred. In the process of welding large workpieces such as the protective door frame 001, especially in multi-layer welding and other applications that require frequent slag removal, this helps to improve welding efficiency and makes the slag removal more thorough.

[0051] To avoid applying excessive force to the weld during slag removal, the force applied during slag removal should be parallel to the weld. Specifically, such as Figure 4 As shown, a slag removal mechanism 1 for a steel structure protective door welding device includes at least one force-applying member 11, which is configured to move in parallel reciprocating motion based on the weld.

[0052] Among them, the force-applying component 11 can be a brush bristle or any rigid body capable of applying force to remove molten slag. In this embodiment, the force-applying component 11 can be controlled by any mechanism that can drive the force-applying component 11 to move in one direction, such as an electric slide.

[0053] It should be noted that the present invention is a welding device for steel structure protective doors. In this embodiment, if parallel slag removal is required on the weld seam through the slag removal mechanism 1, the force application member 11 is driven to move parallel reciprocating relative to the weld seam at a certain speed. During the movement of the force application member 11, the force application member 11 contacts the weld seam to remove the molten slag on the weld seam.

[0054] Considering that powdered slag can be normally suctioned under negative pressure, when the slag is large in size, it cannot be normally suctioned for collection. Therefore: Specifically, and such as Figure 4 As shown, a slag crushing mechanism 2 for welding a steel structure protective door includes a crushing chamber 21, a movable crushing component 22 is provided inside the crushing chamber 21, the lower end of the crushing chamber 21 is open, and a slag inlet 23 is provided on the side of the lower end of the crushing chamber 21 near the force-applying component 11 to allow molten slag to enter.

[0055] It should be noted that the present invention is a welding device for steel structure protective doors. After the slag on the weld is removed by the slag crushing mechanism 2, the slag falls to the slag inlet 23 on the crushing chamber 21. In this embodiment, taking the blocky slag as an example, it can enter the interior of the crushing chamber 21 through the slag inlet 23 under the action of external negative pressure. By driving the crushing component 22 to move back and forth inside the crushing chamber 21, the crushing component 22 applies force to crush the slag inside the crushing chamber 21, thereby obtaining powdered slag.

[0056] As a preferred embodiment, such as Figure 5 As shown, a flexible element 13 is provided at the part of the crushing chamber 21 where the slag inlet 23 is opened. The flexible element 13 is used to fit the protective door frame 001 to block the molten slag.

[0057] Among them, flexible component 13 refers to flexible components such as rubber baffles, which cause molten slag to fall into the negative pressure suction range during the slag removal process.

[0058] Specifically, such as Figure 8 As shown, a slag suction mechanism 3 for welding a steel structure protective door includes a cylinder 31, a piston 32 slidably connected inside the cylinder 31, a pipe 34 for communication between the cylinder 31 and the crushing chamber 21, and a one-way valve 33 between the pipe 34 and the cylinder 31. The one-way valve 33 only allows gas to flow from the pipe 34 to the cylinder 31, and a one-way valve 33 is also provided on the cylinder 31 to allow gas to flow out of the cylinder 31.

[0059] In this embodiment, the cylinder 31 may be a fixed frame that is fixedly connected to the moving drive mechanism 4; A slag outlet 24 is provided on the crushing chamber 21, and the slag outlet 24 is connected to the cylinder 31 in one direction through the pipe fitting 34.

[0060] It should be noted that the present invention is a welding device for steel structure protective doors. After the slag is crushed into powder by the slag suction mechanism 3, the piston 32 is moved vertically and reciprocally inside the cylinder 31. During the movement of the piston 32, the piston motion is constituted. During the suction stroke of the piston 32, the gas flows from the pipe 34 to the inside of the cylinder 31. That is, under the premise that the pipe 34 is connected to the crushing chamber 21, the powdery slag inside the crushing chamber 21 is sucked away from the slag inlet 23. Because a one-way valve 33 is provided on the piston 32 and between the cylinder 31 and the pipe 34, during the reset stroke of the piston 32, the airflow direction is from the cylinder 31 to the outside, thus completing the slag suction action.

[0061] In the above embodiment, since there is an operating mechanism for vertically reciprocating movement of the force-applying component 11, vertically reciprocating movement of the crushing component 22, and vertically reciprocating movement of the piston component 32, the following is true: Specifically, such as Figure 4 As shown, a moving drive mechanism 4 for a steel structure protective door welding device is provided. The moving direction of the broken part 22 is parallel to the weld seam. The moving drive mechanism 4 is provided on the broken part 22 and the force-applying part 11 to drive them to move synchronously. The moving drive mechanism 4 includes a rotating part 41. A sliding part 42 is eccentrically provided on the rotating part 41. A linear slide rail 43 cooperates with the sliding part 42. The linear slide rail 43 is restricted to moving only in one direction. It is configured so that the rotating part 41 drives the broken part 22 and the force-applying part 11 to move synchronously through the sliding part 42 and the linear slide rail 43 during the rotation process.

[0062] Among them, since the movement direction of the broken part 22 is parallel to the weld, removing slag parallel to the weld direction can avoid scratches, indentations or even micro-cracks on the weld surface caused by applying force in the vertical direction, which helps to maintain the integrity and surface quality of the weld. Rotating component 41 is a rotating disk, and sliding component 42 is a pin, which is connected to rotating component 41 when it is not movable. For example, it can be a fixed connection or a rotating connection. The mobile drive mechanism 4 also includes a fixed frame, a rotating member 41 is rotatably connected to the fixed frame, and a rotating drive member 44, such as a motor, is provided on the fixed frame to drive the rotating member 41 to rotate. The linear slide rail 43 is slidably connected to the fixed frame and can only slide in a straight line.

[0063] It should be noted that the present invention is a welding device for steel structure protective doors. If it is necessary to drive the force-applying component 11, the crushing component 22 and the piston component 32 to move vertically and reciprocally through the set moving drive mechanism 4, it is done by rotating the rotating component 41. During the rotation of the rotating component 41, the sliding component 42 moves circumferentially based on the rotation axis of the rotating component 41. Because the linear slide rail 43 is restricted to unidirectional reciprocating movement, during the circumferential movement of the sliding member 42, the sliding member 42 applies force to the linear slide rail 43, so as to drive the force-applying member 11, the breaking member 22 and the piston member 32 connected to it to move through the linear slide rail 43. The maximum unidirectional stroke of the linear slide rail 43 is the circumferential movement of the sliding member 42 from its current position to another position that is symmetrical about its axial direction. That is, the rotating member 41 has a rotation stroke of half a turn.

[0064] It is worth mentioning that the rotation of the rotating component 41 drives the sliding component 42 to move circumferentially, and the sliding component 42 drives the linear slide rail 43 to move back and forth. The conversion of circumferential movement into reciprocating movement is closer to a pure sine function, which can achieve higher frequency, smoother and lower impact operation.

[0065] As a preferred embodiment, the piston 32 is fixedly connected to the linear slide rail 43. Since the crushing component 22, the force-applying component 11, and the piston 32 all need to perform reciprocating movement, the mobile drive mechanism 4 is used to simultaneously control the slag cleaning mechanism 1, the slag crushing mechanism 2, and the slag suction mechanism 3, resulting in higher device integration and a smaller footprint.

[0066] In a preferred embodiment, the cylinder 31 and the crushing chamber 21 are coaxially arranged, and are vertically distributed based on the rotating component 41, such as... Figure 3 In the structural state shown, the slag crushing mechanism 2 and the slag suction mechanism 3 are synchronously controlled by the moving drive mechanism 4. In this state, the crushing action of the crushing component 22 corresponds exactly to the suction action of the piston component 32, so that the slag can be sucked out from the inside of the crushing chamber 21 in the first time during the crushing process, thus avoiding the accumulation inside the crushing chamber 21. In addition, since the crushing chamber 21 and the cylinder 31 are distributed vertically based on the rotating part 41, the cylinder 31 is in a higher position during the process of processing the molten slag. As a result, the suction force generated by the cylinder 31 can perform negative pressure suction on the powdered molten slag to drive the molten slag to move effectively, but it will not be adsorbed into the cylinder 31. A filter screen is installed in the cylinder 31 to isolate molten slag powder that may enter the cylinder 31, or, as... Figure 7 The structure shown has an isolation chamber between the cylinder 31 and the crushing chamber 21 for temporarily storing the molten slag.

[0067] In the above embodiment, the molten slag in block form is to enter the crushing chamber 21 for crushing. This is achieved by using negative pressure suction during the slag removal process. Molten slag of a certain size can be normally suctioned and enter the crushing chamber 21 through the slag inlet 23 for crushing. This means that molten slag of this size can move to a certain extent under the action of negative pressure suction, but not to the point of forming powdery slag that can float. On this basis, when the block size of the molten slag is large enough, that is, the negative pressure suction of the slag suction mechanism 3 is insufficient to move the molten slag, the force application component 11 is used to remove the slag from the weld. There is a certain distance between the force application component 11 and the slag inlet 23 to allow larger molten slag that can be normally suctioned to enter the crushing chamber 21 for crushing. Specifically, such as Figure 4As shown, a slag removal mechanism 1 for a steel structure protective door welding device has a force-applying component 11 made of brush bristles, which is configured to be perpendicular to the weld when moving downwards to remove slag, and to rotate when moving upwards to sweep the slag into the interior of the crushing chamber 21.

[0068] Among them, the force-applying component 11 located at the bottom is provided with a rotation drive component 12 that can drive the force-applying component 11 to rotate. The rotation drive component 12 can be a motor.

[0069] Furthermore, the slag cleaning mechanism 1 also includes a base frame 111. Among at least one force-applying member 11, the lowest force-applying member 11 is rotatably connected to the base frame 111. A gear 112 is provided on the force-applying member 11, and a rack 113 meshes with the gear 112. A sliding member 114 is fixedly connected to the rack 113. A sliding seat 115 is provided on the base frame 111 at a location that does not affect the operation of the force-applying member 11, corresponding to the sliding member 114. The slag cleaning mechanism 1 also includes a locking member 116 for locking the sliding member 114.

[0070] The base frame 111 is fixedly connected to the linear slide rail 43; Gear 112 is fixedly connected to its corresponding force-applying component 11; Since it is necessary to form a relative sliding between the base frame 111 and the rack 113, the rack 113 can be made of high-density material, so that the rack 113 can be located at the bottom end by its own weight during the relative sliding process between the sliding member 114 and the base frame 111. The second sliding member 114 is a sliding rod, and the sliding seat 115 is a slip ring that fits the structure of the sliding rod; The locking element 116 can be driven by a telescopic drive such as an electric push rod to drive the pin, or it can be made of an electromagnetic lock. The sliding element 114 has a slot that matches the pin structure, or a friction plate is provided on the telescopic drive and the part to be contacted by the sliding element 114. When the telescopic drive extends to contact the sliding element 114, the friction plate increases the coefficient of friction between the locking element 116 and the sliding element 114. The locking element 116 is fixedly connected to the base frame 111.

[0071] It should be noted that the present invention is a welding device for steel structure protective doors. In this embodiment, the force-applying component 11 is a brush. In the process of removing weld slag, the brush, which is the force-applying component 11, applies parallel force to the weld to form a slag removal operation. During the normal application of force by the brush bristles of the force-applying component 11 to the weld slag, the brush bristles apply force to the slag perpendicular to the weld surface. In order for the force-applying component 11 to carry the slag into the interior of the crushing chamber 21: During the upward movement of the force-applying component 11, the locking component 116 releases the restriction on the sliding component 114, allowing the sliding component 114 to slide relative to the base frame 111. As the force-applying component 11 moves upward, at least the gear 112 and rack 113 on the lowest force-applying component 11 move relative to each other. During the movement of the gear 112, it rotates relative to the rack 113, allowing the force-applying component 11 to rotate simultaneously during its upward movement. This cleans the larger molten slag towards the slag inlet 23.

[0072] It is worth mentioning that by cooperating with the rack 113 and the gear 112, the force-applying component 11, which is closest to the molten slag, is rotated during the upward movement of the force-applying component 11. This rotation during the movement of the force-applying component 11 constitutes a slag-cleaning action, realizing the complete process of slag cleaning, slag removal, slag breaking, and slag collection, resulting in a more thorough slag cleaning efficiency.

[0073] As a preferred embodiment, such as Figure 6 As shown, the rack 113 is located on the side of the gear 112 adjacent to the force-applying member 11. Thus, when the gear 112 moves relative to the rack 113, the rotation direction of the gear 112 can drive the force-applying member 11 to rotate toward the slag inlet 23.

[0074] In summary, the basic working principle of this invention is as follows: If it is necessary to clean the weld slag, the rotating part 41 is rotated. During the rotation of the rotating part 41, the sliding part 42 is driven to move circumferentially. When the linear slide rail 43 is restricted to moving only in one direction, the circumferential movement of the sliding part 42 drives the linear slide rail 43 to move back and forth. During the movement of the linear slide rail 43, the crushing component 22, the force-applying component 11, and the piston component 32 are simultaneously moved. The piston component 32 moves inside the cylinder 31 to form a suction operation, and the crushing component 22 moves inside the crushing chamber 21 to form a crushing operation on the molten slag. At the same time, the force-applying component 11 moves to act on the weld molten slag. Slag cleaning, slag crushing, and slag collection are carried out simultaneously. The suction stroke of the piston component 32 corresponds to the crushing stroke of the crushing component 22, so that the molten slag can be sucked in immediately after being crushed to avoid accumulation inside the crushing chamber 21. Furthermore, during the upward movement of the force-applying component 11, if it is necessary to move a large amount of molten slag into the crushing chamber 21, the locking component 116 is released to lock the sliding component 114. This allows the rotatable force-applying component 11 to rotate via the gear 112 and the rack 113 during the upward movement of the base frame 111, thereby achieving the rotation of the force-applying component 11 during its movement and constituting a slag removal operation.

[0075] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A welding device for steel structure protective doors, comprising a welding torch, characterized in that: The slag cleaning mechanism (1) for cleaning the weld seams on the protective door frame (001), the slag suction mechanism (3) for sucking up molten slag, and the slag crushing mechanism (2) for crushing molten slag that cannot be sucked up, wherein the slag crushing mechanism (2) includes a crushing chamber (21) and a movable crushing component (22) is provided inside the crushing chamber (21).

2. The steel structure protective door welding device according to claim 1, characterized in that: The slag removal mechanism (1) includes at least one force-applying element (11) configured to move in parallel reciprocating motion based on the weld.

3. The steel structure protective door welding device according to claim 2, characterized in that: The force-applying component (11) is a brush, configured to be perpendicular to the weld when moving downwards to remove slag, and to rotate when moving upwards to sweep the slag into the interior of the crushing chamber (21).

4. The steel structure protective door welding device according to claim 3, characterized in that: The slag cleaning mechanism (1) further includes a base frame (111). Among at least one of the force-applying components (11), the lowest force-applying component (11) is rotatably connected to the base frame (111). A gear (112) is provided on the force-applying component (11), and a rack (113) meshes with the gear (112). A sliding component (114) is fixedly connected to the rack (113). A sliding seat (115) is provided on the base frame (111) at a location that does not affect the operation of the force-applying component (11) corresponding to the sliding component (114). The slag cleaning mechanism (1) further includes a locking component (116) for locking the sliding component (114).

5. A steel structure protective door welding device according to claim 3 or 4, characterized in that: The movement direction of the broken component (22) is parallel to the weld seam, and a moving drive mechanism (4) for driving the broken component (22) and the force-applying component (11) to move synchronously is provided on the broken component (22) and the force-applying component (11). The moving drive mechanism (4) includes a rotating component (41), and a sliding component (42) is eccentrically provided on the rotating component (41). A linear slide rail (43) is cooperated with the sliding component (42). The linear slide rail (43) is restricted to moving only in one direction and is configured so that the rotating component (41) drives the broken component (22) and the force-applying component (11) to move synchronously through the sliding component (42) and the linear slide rail (43) during the rotation process.

6. A steel structure protective door welding device according to claim 3 or 4, characterized in that: The lower end of the crushing chamber (21) is open, and a slag inlet (23) is provided on the side of the lower end of the crushing chamber (21) near the force-applying member (11) to allow molten slag to enter. The rack (113) is located on the side of the gear (112) near the force-applying member (11).

7. The steel structure protective door welding device according to claim 5, characterized in that: The slag suction mechanism (3) includes a cylinder (31), a piston (32) is slidably connected inside the cylinder (31), a pipe (34) for communication is provided between the cylinder (31) and the crushing chamber (21), a one-way valve (33) is provided between the pipe (34) and the cylinder (31), the one-way valve (33) only allows gas to flow from the pipe (34) to the cylinder (31), and a one-way valve (33) for allowing gas to flow out from the cylinder (31) is also provided on the cylinder (31).

8. A steel structure protective door welding device according to claim 6, characterized in that: A flexible element (13) is provided at the part of the crushing chamber (21) where the slag inlet (23) is opened. The flexible element (13) is used to fit the protective door frame (001) to block the molten slag.

9. A welding device for a steel structure protective door according to claim 7, characterized in that: The piston (32) is fixedly connected to the linear slide rail (43).

10. A steel structure protective door welding device according to claim 7, characterized in that: The cylinder (31) is coaxially arranged with the crushing chamber (21) and is distributed vertically based on the rotating component (41).

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