Bridge type fitting-out welding portal and using method thereof

Abstract

The invention relates to a bridge type fitting-out welding portal frame and a using method thereof. The bridge type fitting-out welding portal frame comprises a portal frame body. A trolley is mounted on the portal frame body; a guide rail is mounted on the portal frame body; a mounting plate is slidably embedded on the guide rail; welding equipment and a gas tank are mounted on the mounting plate; a workbench is slidably mounted on the mounting plate; a welding wire reel, a welding gun and an air pipe are rotationally installed on the workbench. A welding wire pipeline is mounted on the welding gun; a translation mechanism and a wire feeding mechanism which are matched with each other are arranged on the portal frame body; when the translation mechanism acts, the workbench can be driven to move, and the wire feeding mechanism can guide welding wires to pass through the welding wire pipeline. A protection mechanism and a cleaning mechanism which are matched with each other are arranged on the workbench; the welding quality can be effectively improved through mutual cooperation of the translation mechanism and the wire feeding mechanism, the protection effect of the protection mechanism on a welding part and pre-cleaning of the cleaning mechanism; the welding process is relatively stable, and wire feeding is relatively stable.

Description

Technical Field

[0001] The invention relates to the technical field of welding portal frames, in particular to a bridge-type outfitting welding portal frame and a use method thereof. Background Art

[0002] The bridge-type welding gantry is a kind of equipment used in shipbuilding. It is mainly used to improve the layout of power lines and air pipes during the hull section manufacturing process, improve the cleanliness of the workshop environment and reduce the risk of safety accidents.

[0003] The bridge welding gantry usually includes gantry, end beam, travel wheels, motor drive device and cantilever etc. Its design makes the welding machine, cutting knife, grinding and other equipment concentrated on the gantry, reduces the wiring of cables and air pipes, simplifies workshop management and improves construction safety.

[0004] The functional area responsible for long-distance horizontal linear welding includes a workbench loaded with a welding gun. When the workbench moves, it can drive the welding gun to move, thereby completing the continuous welding task. This welding functional area also includes a wire coil loaded with welding wire and a wire feeding mechanism, which continuously feeds the wire to assist welding. The wire feeding mechanism often uses a roller-guided method to feed the wire, and the roller rotates to drive the welding wire to move. The moving speed of the welding wire is related to the roller speed and the friction coefficient.

[0005] Since the common wire feeding mechanism and the mechanism for controlling the movement of the workbench are driven and controlled separately, that is, the wire feeding amount is not directly related to the movement of the workbench; when performing constant speed welding, the welding task can be completed well; while when performing variable speed welding, the wire feeding mechanism system needs to control the roller speed change multiple times according to the speed of the workbench movement. During this process, the outfitting is easily affected by the outfitting environment, such as wind, waves, humidity, and high temperature environment during welding; it is easy to have insufficient or excessive wire phenomena, resulting in false welding or excessive welding, affecting the welding quality. Summary of the invention

[0006] The object of the present invention is to provide a bridge-type outfitting welding gantry and a method of using the same to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions: A bridge-type outfitting welding gantry comprises a gantry body; a symmetrically arranged trolley is mounted on the gantry body; a roller that rolls with a track system is rotatably mounted on the trolley; A guide rail is installed on the gantry body; a mounting plate is slidably engaged on the guide rail; welding equipment and a gas tank are installed on the mounting plate; A workbench is slidably mounted on the mounting plate; a wire reel is rotatably mounted on the workbench, a welding torch connected to the welding equipment is mounted, and an air pipe communicated with the gas cylinder is mounted; a wire pipeline is mounted on the welding torch; A translation mechanism and a wire feeding mechanism which cooperate with each other are arranged on the gantry body; when the translation mechanism acts, it can drive the mounting plate to horizontally move on the gantry body to drive the workbench to move synchronously, and the wire feeding mechanism can drive the wire reel to rotate to guide the welding wire to pass through the wire pipeline; A protection mechanism and a cleaning mechanism which cooperate with each other are arranged on the workbench; when the protection structure acts, it can convey the inert gas in the gas cylinder to the welding part through the air pipe; and the cleaning structure can clean the next welding part.

[0008] As a further scheme of the present invention: a support frame is mounted on the mounting plate; a lifting frame is slidably fitted on the support frame; a hydraulic cylinder is mounted on the support frame; the output end of the hydraulic cylinder is fixedly connected to the lifting frame; the workbench is mounted at the end of the lifting frame.

[0009] As a further scheme of the present invention: the translation mechanism includes a lead screw column rotatably mounted on the gantry body; a threaded sleeve threadedly connected to the lead screw column is mounted on the mounting plate.

[0010] As a further scheme of the present invention: the guiding mechanism includes two groups of guiding rotating shafts rotatably mounted on the workbench; guiding gears meshing with each other are mounted on the guiding rotating shafts; a plurality of groups of clamping blocks are slidably fitted on the circumferences of the guiding gears at equal intervals; a second spring fixedly connected to the guiding gear is mounted on the clamping block.

[0011] As a further scheme of the present invention: a tooth groove is mounted on the gantry body; a second bevel gear is rotatably mounted on the mounting plate; a transmission gear meshing with the tooth groove is mounted on the second bevel gear; a transmission rotating shaft is rotatably mounted on the lifting frame; a first bevel gear which is slidably fitted with the transmission rotating shaft and meshes with the second bevel gear is rotatably mounted on the mounting plate; a third bevel gear is mounted on the transmission rotating shaft; a fourth bevel gear meshing with the third bevel gear is rotatably mounted on the workbench.

[0012] As a further scheme of the present invention: a fixed turntable is mounted on the fourth bevel gear; a plurality of groups of first tooth blocks are mounted on the fixed turntable; a sliding turntable is slidably mounted on one of the guiding rotating shafts; a plurality of groups of second tooth blocks are mounted on the sliding turntable; the plurality of groups of first tooth blocks and the plurality of groups of second tooth blocks can be engaged with each other; a first spring is sleeved on the guiding rotating shaft; both ends of the first spring abut against the guiding rotating shaft and the sliding turntable respectively.

[0013] As a further solution of the present invention: The protection mechanism includes a blower installed on the workbench; the air inlet end of the blower is communicated with the air tank; its air outlet end is communicated with the air pipe; a motor is installed on the workbench; the output end of the motor is fixedly connected to the working shaft of the blower.

[0014] As a further solution of the present invention: The cleaning mechanism includes a cleaning rotating shaft rotatably installed on the workbench; a roller brush is installed on the cleaning rotating shaft; the cleaning rotating shaft is connected to the motor through a belt.

[0015] As a further solution of the present invention: The roller brush is made of metal.

[0016] A method of using a bridge outfitting welding gantry as described above during welding operations, including the following steps: Step 1: Through the mutual cooperation of the rollers and the track system, the gantry body on the trolley is moved to the set working position; and the lifting frame is driven to rise or fall by the driving hydraulic cylinder to move the workbench to the working plane (the distance between the welding torch and the welding part is appropriate). Step 2: Control the welding equipment and the air tank to work; so that the welding torch and the air tank enter the standby state; and at this time, the welding wire passes through the wire feeding mechanism and through the wire pipe, and is exposed outside the welding torch. Step 3: Through the action of the translation mechanism, drive the mounting plate to move horizontally, thereby driving the workbench to move; so that the welding torch welds the welding part; and the wire feeding mechanism will drive the wire reel to rotate, so that the welding wire continuously passes through the wire pipe; thus maintaining the exposed length of the welding wire unchanged. Step 4: At the same time, control the protection mechanism to act, so as to transport the inert gas in the air tank to the welding part through the air pipe; and the cleaning mechanism will drive the roller brush to rotate rapidly; to pre-clean the next welding part.

[0017] Compared with the prior art, the beneficial effects of the present invention are: Through the mutual cooperation of the translation mechanism and the wire feeding mechanism, the protection of the protection mechanism for the welding part, and the pre-cleaning of the cleaning mechanism, the welding quality can be effectively improved; the welding process is relatively stable and the wire feeding is relatively stable; through the mutual cooperation of the translation mechanism and the wire feeding mechanism, they are directly connected; the welding part can be welded smoothly, and the welding rate is relatively uniform, which can avoid the large fluctuation of the welding rate affecting the welding quality; and during the welding process, the wire feeding mechanism can drive the welding wire to move to continuously supplement the welding wire consumed during welding. In this process, the wire feeding amount is only controlled by the action of the translation mechanism, so as to avoid insufficient welding wire causing insecure welding or excessive welding wire causing over-welding during welding, and can further improve the welding quality. Description of the Drawings

[0018] Figure 1 Schematic structural diagram of an embodiment of a bridge-type outfitting welding gantry and its usage method.

[0019] Figure 2 It is Figure 1 Schematic structural diagram of the position A in

[0020] Figure 3 Schematic structural diagram of another perspective of an embodiment of a bridge-type outfitting welding gantry and its usage method.

[0021] Figure 4 It is Figure 3 Schematic structural diagram of the position B in

[0022] Figure 5 Schematic structural diagram of the tooth groove in an embodiment of a bridge-type outfitting welding gantry and its usage method.

[0023] Figure 6 Schematic structural diagram of the workbench in an embodiment of a bridge-type outfitting welding gantry and its usage method.

[0024] Figure 7 It is Figure 6 Schematic structural diagram of the position C in

[0025] Figure 8 Schematic structural diagram of the roller brush in an embodiment of a bridge-type outfitting welding gantry and its usage method.

[0026] Figure 9 Schematic structural diagram of the guide gear in an embodiment of a bridge-type outfitting welding gantry and its usage method.

[0027] Figure 10 Schematic structural diagram of the clamping block in an embodiment of a bridge-type outfitting welding gantry and its usage method.

[0028] In the figure: 1. Gantry body; 101. Guide rail; 102. Tooth groove; 2. Trolley; 201. Roller; 3. Mounting plate; 301. Threaded sleeve; 302. First bevel gear; 4. Support frame; 5. Lifting frame; 501. Transmission rotating shaft; 502. Third bevel gear; 6. Workbench; 7. Hydraulic cylinder; 8. Lead screw column; 9. Welding wire reel; 10. Second bevel gear; 1001. Transmission gear; 11. Fourth bevel gear; 12. Fixed turntable; 1201. First tooth block; 13. Guide rotating shaft; 14. Sliding turntable; 1401. Second tooth block; 15. First spring; 16. Guide gear; 17. Clamping block; 18. Second spring; 19. Welding wire pipeline; 20. Welding torch; 21. Welding equipment; 22. Gas cylinder; 23. Motor; 24. Blower; 25. Air pipe; 26. Cleaning rotating shaft; 27. Roller brush. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] In addition, the elements in the present invention are referred to as "fixed to" or "disposed on" another element, which can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation manner.

[0031] Please refer to Figures 1 to 10 , in the embodiment of the present invention, a bridge-type outfitting welding gantry includes a gantry body 1; symmetrically arranged trolleys 2 are installed on the gantry body 1; rollers 201 that are rotationally installed on the trolleys 2 and are in rolling cooperation with the track system are provided. A guide rail 101 is installed on the gantry body 1; a mounting plate 3 is slidably fitted on the guide rail 101; a welding equipment 21 and a gas cylinder 22 are installed on the mounting plate 3. A workbench 6 is slidably installed on the mounting plate 3; a welding wire reel 9 is rotationally installed on the workbench 6, a welding torch 20 connected to the welding equipment 21 and an air pipe 25 communicated with the gas cylinder 22 are installed; a welding wire pipeline 19 is installed on the welding torch 20. The gantry body 1 is provided with a translation mechanism and a wire feeding mechanism that cooperate with each other; when the translation mechanism is in motion, it can drive the mounting plate 3 to move horizontally on the gantry body 1, so as to drive the workbench 6 to move synchronously, and the wire feeding mechanism can pull the welding wire reel 9 to rotate, so as to guide the welding wire to pass through the welding wire pipe 19; The workbench 6 is provided with a protective mechanism and a cleaning mechanism that cooperate with each other; when the protective mechanism is in action, the inert gas in the gas tank 22 can be transported to the welding position through the gas pipe 25; and the cleaning mechanism can clean the next welding position.

[0032] Taking the embodiment combining all the features recorded in the present application as an example, when in use, the roller 201 cooperates with the track system of the outfitting surface to move the gantry body 1 to the working surface. The position of the ship is fixed, that is, the welding position is fixed, and the gantry body 1 moves according to the set trajectory and stroke, which can effectively improve the accuracy of welding.

[0033] By controlling the working state of the welding equipment 21, the welding gun 20 is placed in a ready-to-work state; and by controlling the working state of the gas tank 22, the welding part is protected in cooperation with the protection mechanism, thereby improving the welding quality.

[0034] The welding wire is wound on the welding wire reel 9 in an orderly manner. After passing through the welding wire pipe 19, the welding wire is exposed to the welding gun 20. According to the actual welding requirements, the exposed length of the welding wire is pre-adjusted to maximize the welding quality and welding efficiency.

[0035] After the workbench 6 moves to the working plane along with the gantry body 1, the vertical height of the workbench 6 is adjusted according to the height of the actual welding part so that the exposed welding wire on the welding gun 20 contacts the welding part to start welding.

[0036] The installation plate 3 is driven to move horizontally through the translation mechanism to drive the workbench 6 to move, thereby driving the welding gun 20 to move smoothly; and during the movement, the wire reel 9 is pulled to rotate through the wire feeding mechanism to guide the welding wire through the welding wire pipe 19 to maintain the exposed length of the welding wire.

[0037] Through the cooperation between the translation mechanism and the wire feeding mechanism, the welding parts can be welded smoothly, and the welding rate is relatively uniform, which can avoid large fluctuations in the welding rate and cause uneven welding quality, thereby improving the welding quality; and during the welding process, the wire feeding mechanism can drive the welding wire to move to continuously replenish the amount of welding wire consumed by welding, thereby avoiding insufficient welding wire during the welding process and causing loose welding, further improving the welding quality.

[0038] During the welding process, through the action of the protection mechanism, the shielding gas in the gas cylinder 22 is transported to the trachea 25. The outlet end of the trachea 25 is aligned with the welding part, and the shielding gas is continuously blown towards the welding part through the trachea 25 to blow away the moisture and air generated during the welding process, thereby reducing the amount of oxides generated due to oxidation during the welding process.

[0039] Meanwhile, through the action of the cleaning mechanism, the welding part of the next process is pre-cleaned to avoid the influence of pollutants on the material surface on the welding quality.

[0040] Through the mutual cooperation of the translation mechanism and the wire feeding mechanism, the protection effect of the protection mechanism on the welding part, and the pre-cleaning of the cleaning mechanism, the welding quality can be effectively improved; the welding process is relatively stable and the wire feeding is relatively stable.

[0041] In another embodiment of the present invention, a support frame 4 is installed on the mounting plate 3; a lifting frame 5 is slidably fitted on the support frame 4; a hydraulic cylinder 7 is installed on the support frame 4; the output end of the hydraulic cylinder 7 is fixedly connected to the lifting frame 5; the workbench 6 is installed at the end of the lifting frame 5.

[0042] Taking the embodiment combined with all the features described in this application as an example, during use, through the action of the hydraulic cylinder 7, the lifting frame 5 is driven to slide in the support frame 4 to drive the workbench 6 to rise or fall, thereby driving the welding torch 20 to move to the set working position.

[0043] By adjusting the position of the welding torch 20 in the way driven by the hydraulic cylinder 7, the pressure between the welding wire held by the welding torch 20 and the welding part can be effectively controlled, avoiding the situation that the welding part is not firm due to insufficient welding force or the welding wire is bent due to excessive welding force, thus causing unevenness after the welding part is welded, which increases the subsequent grinding and leveling work.

[0044] In another embodiment of the present invention, the translation mechanism includes a lead screw column 8 rotatably installed on the gantry body 1; a threaded sleeve 301 threadedly connected to the lead screw column 8 is installed on the mounting plate 3.

[0045] Taking the embodiment combined with all the features described in this application as an example, during use, one end of the lead screw column 8 is fixedly connected to the power device on the gantry body 1. The lead screw column 8 is driven to rotate by the power device to drive the threaded sleeve 301 to move along the length direction of the lead screw column 8 through thread fitting, thereby driving the mounting plate 3 to move synchronously.

[0046] Through the threaded fit between the lead screw column 8 and the threaded sleeve 301, it is possible to avoid the disorder of the movement of the mounting plate 3 caused by external interferences such as waves during the welding process; and by controlling the rotation speed of the lead screw column 8, it is possible to effectively control the moving speed of the mounting plate 3, which is relatively stable during the moving process, so that the welding speed is relatively stable, and avoid over-welding or false welding caused by large speed fluctuations during the welding process; it can effectively improve the welding quality.

[0047] In another embodiment of the present invention, the guiding mechanism includes two groups of guiding rotating shafts 13 rotatably mounted on the workbench 6; guiding gears 16 meshing with each other are mounted on the guiding rotating shafts 13; a plurality of groups of clamping blocks 17 are slidably fitted in the circumferential direction of the guiding gears 16 at equal intervals; a second spring 18 fixedly connected to the guiding gear 16 is mounted on the clamping block 17.

[0048] Taking the embodiment combined with all the features described in this application as an example, when in use, the welding wire on the welding wire reel 9 passes through between the two guiding gears 16 and then through the welding wire pipe 19.

[0049] The clamping blocks 17 on the two guiding gears 16 cooperate with each other, and the distance between the two is smaller than the diameter of the welding wire. Therefore, after the welding wire passes through, it will squeeze the clamping blocks 17 to make the clamping blocks 17 move away from each other to compress the second spring 18; as the compression of the second spring 18 increases, its elastic force will gradually increase; and through the elastic force acting on the clamping blocks 17 in the opposite direction, the two clamping blocks 17 can firmly clamp the welding wire, avoiding the deformation of the welding wire caused by too large clamping force and affecting the welding quality or too small clamping force resulting in unsmooth wire feeding and false welding.

[0050] When the mounting plate 3 moves from one end of the gantry body 1 to the other end, the guiding rotating shaft 13 will rotate, thereby driving the clamping block 17 to make a circular motion. The two guiding gears 16 mesh with each other and rotate in opposite directions. Therefore, the two clamping blocks 17 make relative motions and both rotate towards the welding wire.

[0051] Through the relative circular motion of the two groups of clamping blocks 17, the pushing effect on the welding wire can be completed during the process of clamping the welding wire, so that the welding wire continuously passes through the welding wire pipe 19 and drives the welding wire reel 9 to rotate.

[0052] Through the mutual cooperation of the translation mechanism and the wire feeding mechanism, it is possible to stably weld the welding part, and the welding rate is relatively unified, which can avoid the uneven welding quality caused by large fluctuations in the welding rate, thereby improving the welding quality; and during the welding process, the wire feeding mechanism can drive the welding wire to move to continuously supplement the consumed welding wire amount during welding, so as to avoid the welding being not firm due to insufficient welding wire during the welding process and further improve the welding quality.

[0053] In another embodiment of the present invention, a tooth groove 102 is installed on the gantry body 1; a second bevel gear 10 is rotatably installed on the mounting plate 3; a transmission gear 1001 meshing with the tooth groove 102 is installed on the second bevel gear 10; a transmission rotating shaft 501 is rotatably installed on the lifting frame 5; a first bevel gear 302 which is slidably fitted with the transmission rotating shaft 501 and meshes with the second bevel gear 10 is rotatably installed on the mounting plate 3; a third bevel gear 502 is installed on the transmission rotating shaft 501; a fourth bevel gear 11 meshing with the third bevel gear 502 is rotatably installed on the workbench 6.

[0054] Taking the embodiment combined with all the features described in this application as an example, in use, the fourth bevel gear 11 is connected to a guiding rotating shaft 13. Therefore, when the transmission rotating shaft 501 rotates, it will drive the third bevel gear 502 to rotate, and then drive the fourth bevel gear 11 to rotate through meshing, so as to drive the guiding rotating shaft 13 to rotate to complete wire feeding.

[0055] When the translation mechanism drives the mounting plate 3 to move, through the meshing of the transmission gear 1001 and the tooth groove 102, the transmission gear 1001 is driven to rotate, thereby driving the second bevel gear 10 to rotate, and driving the first bevel gear 302 to rotate through meshing, so as to drive the transmission rotating shaft 501 to rotate, and then drive the guiding rotating shaft 13 to rotate.

[0056] That is, when the mounting plate 3 drives the welding torch 20 to move smoothly for smooth welding work, the wire feeding mechanism can continuously maintain the exposed length of the welding wire. Through the mutual cooperation of the translation mechanism and the wire feeding mechanism, the welding part can be welded smoothly, and the welding speed is relatively uniform, which can avoid the uneven welding quality caused by large fluctuations in the welding speed, so as to improve the welding quality; and during the welding process, the wire feeding mechanism can drive the welding wire to move to continuously supplement the consumed welding wire amount during welding, so as to avoid poor welding caused by insufficient welding wire during welding and further improve the welding quality.

[0057] And when the moving speed of the mounting plate 3 driven by the translation mechanism changes, the rotation speed of the guiding rotating shaft 13 can make a relative change in time without any lag phenomenon, avoiding over-welding and false welding caused by too fast or too slow wire feeding during variable-speed welding.

[0058] In another embodiment of the present invention, a fixed turntable 12 is mounted on the fourth bevel gear 11; a plurality of groups of first tooth blocks 1201 are mounted on the fixed turntable 12; a sliding turntable 14 is slidably mounted on one guiding rotating shaft 13; a plurality of groups of second tooth blocks 1401 are mounted on the sliding turntable 14; the plurality of groups of first tooth blocks 1201 and the plurality of groups of second tooth blocks 1401 can be engaged with each other; a second spring 18 is sleeved on the guiding rotating shaft 13; two ends of the second spring 18 are respectively abutted against the guiding rotating shaft 13 and the sliding turntable 14.

[0059] Taking the embodiment in which all the features described in this application are combined as an example, in use, one surface of the first tooth block 1201 is a straight surface, and the other surface is an inclined surface; one surface of the second tooth block 1401 is also a straight surface, and the other surface is a slope surface.

[0060] In the initial state, the straight surfaces of the first tooth block 1201 and the second tooth block 1401 are engaged with each other, and the inclined surface and the slope surface are also abutted against each other.

[0061] When the driving rotating shaft 501 drives the third bevel gear 502 to rotate, the fourth bevel gear 11 will be driven to rotate through the meshing action, thereby driving the fixed turntable 12 to rotate, so as to drive the sliding turntable 14 to rotate through the mutual cooperation of the first tooth block 1201 and the second tooth block 1401 (the mutual abutting action of the two straight surfaces), thereby driving the guiding rotating shaft 13 to rotate, so as to drive the wire feeding mechanism to act. During this process, the mounting plate 3 moves from one end of the gantry body 1 to the other end under the drive of the translation mechanism.

[0062] After the translation mechanism completes one action, the translation mechanism will act in the reverse direction to drive the mounting plate 3 to move in the reverse direction, so as to complete the reset; thus, the welding direction of the next welding point is kept consistent, so as to improve the overall strength.

[0063] When the translation mechanism acts in the reverse direction, the driving rotating shaft 501 will rotate in the reverse direction, thereby driving the fixed turntable 12 to rotate in the reverse direction. At this time, the inclined surface of the first tooth block 1201 will cooperate with the slope surface of the second tooth block 1401, thereby squeezing the sliding turntable 14 to separate from the fixed turntable 12 and compressing the first spring 15. During this process, the guiding rotating shaft 13 does not rotate, so that the welding wire will not extend or retract, so as to ensure the welding quality of the next welding point.

[0064] In another embodiment of the present invention, the protection mechanism includes a blower 24 mounted on the workbench 6; the air inlet end of the blower 24 is communicated with the air tank 22; its air outlet end is communicated with the air pipe 25; a motor 23 is mounted on the workbench 6; the output end of the motor 23 is fixedly connected to the working shaft of the blower 24.

[0065] Taking the embodiment combining all the features described in this application as an example, during use, the motor 23 is controlled to operate, thereby driving the blower 24 to work, so as to guide the protective gas to flow from the gas tank 22 to the trachea 25 and accelerate the air flow, so that the protective gas can quickly discharge from the air outlet end of the trachea 25, thereby protecting the welding point. By blowing the protective gas to isolate the welding part from contact with the air, it is possible to avoid the increase in the amount of oxides caused by oxidation due to high temperature during the welding process, thereby affecting the welding quality.

[0066] In another embodiment of the present invention, the cleaning mechanism includes a cleaning rotating shaft 26 rotatably installed on the workbench 6; a roller brush 27 is installed on the cleaning rotating shaft 26; the cleaning rotating shaft 26 is connected to the motor 23 through a belt.

[0067] Taking the embodiment combining all the features described in this application as an example, during use, when the motor 23 operates, it will drive the cleaning rotating shaft 26 to rotate, thereby driving the roller brush 27 to rotate, so as to pre-clean the welding point of the next step through the high-speed rotating roller brush 27, thereby removing contaminants such as oil stains and mud sticking to the welding part and avoiding excessive contaminants from affecting the welding quality.

[0068] In another embodiment of the present invention, the roller brush 27 is made of metal.

[0069] Taking the embodiment combining all the features described in this application as an example, during use, the roller brush 27 is made of metal and has strong cleaning ability under high-speed rotation, which can effectively remove the surface oxides of the welding material; and it has a long service life.

[0070] A method for using a bridge outfitting welding gantry as described above during welding operations includes the following steps: Step 1: Through the mutual cooperation of the rollers 201 and the track system, the gantry body 1 on the trolley 2 is moved to the set working position; and the lifting frame 5 is driven to rise or fall by the driving hydraulic cylinder 7 to move the workbench 6 to the working plane (the distance between the welding torch 20 and the welding part is appropriate). Step 2: Control the welding equipment 21 and the gas tank 22 to work; so that the welding torch 20 and the gas tank 22 enter the standby state; and at this time, the welding wire passes through the wire feeding mechanism and through the wire pipe 19 and exposes outside the welding torch 20. Step 3: Through the action of the translation mechanism, drive the mounting plate 3 to move horizontally, thereby driving the workbench 6 to move; so that the welding torch 20 welds the welding part; and the wire feeding mechanism will drive the wire reel 9 to rotate, so that the welding wire continuously passes through the wire pipe 19; thus maintaining the exposed length of the welding wire unchanged. Step 4: Meanwhile, control the protection mechanism to act so as to deliver the inert gas in the gas cylinder 22 to the welding part through the trachea 25; and the cleaning mechanism will drive the roller brush 27 to rotate rapidly to pre-clean the next welding part.

[0071] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed invention.

[0072] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A bridge-type outfitting welding gantry, comprising a gantry body (1); a symmetrically arranged trolley (2) is mounted on the gantry body (1); a roller (201) that is rotatably mounted on the trolley (2) and that rolls in cooperation with a track system; It is characterized in that A guide rail (101) is installed on the portal frame body (1); a mounting plate (3) is slidably engaged on the guide rail (101); a welding device (21) and a gas tank (22) are installed on the mounting plate (3); A workbench (6) is slidably mounted on the mounting plate (3); a welding wire reel (9) and a welding gun (20) connected to the welding device (21) and an air pipe (25) connected to the air tank (22) are rotatably mounted on the workbench (6); a welding wire pipeline (19) is mounted on the welding gun (20); The gantry body (1) is provided with a translation mechanism and a wire feeding mechanism that cooperate with each other; when the translation mechanism is in motion, it can drive the mounting plate (3) to move horizontally on the gantry body (1), thereby driving the workbench (6) to move synchronously, and the wire feeding mechanism can pull the welding wire reel (9) to rotate, thereby guiding the welding wire to pass through the welding wire pipe (19); The workbench (6) is provided with a protective mechanism and a cleaning mechanism that cooperate with each other; when the protective structure is activated, the inert gas in the gas tank (22) can be transported to the welding position through the gas pipe (25); and the cleaning structure can clean the next welding position.

2. A bridge-type outfitting welding gantry according to claim 1, characterized in that: A support frame (4) is mounted on the mounting plate (3); a lifting frame (5) is slidably engaged on the support frame (4); a hydraulic cylinder (7) is mounted on the support frame (4); an output end of the hydraulic cylinder (7) is fixedly connected to the lifting frame (5); and the workbench (6) is mounted at the end of the lifting frame (5).

3. A bridge-type outfitting welding gantry according to claim 2, characterized in that: The translation mechanism comprises a screw column (8) rotatably mounted on the portal frame body (1); a threaded sleeve (301) threadedly connected to the screw column (8) is mounted on the mounting plate (3).

4. A bridge-type outfitting welding gantry according to claim 3, characterized in that: The guide mechanism comprises two groups of guide shafts (13) rotatably mounted on the workbench (6); each of the guide shafts (13) is mounted with guide gears (16) meshing with each other; a plurality of groups of clamping blocks (17) equidistantly distributed are slidably engaged in the circumference of the guide gears (16); and a second spring (18) fixedly connected to the guide gears (16) is mounted on the clamping blocks (17).

5. A bridge-type outfitting welding gantry according to claim 4, characterized in that: The gantry body (1) is provided with a tooth groove (102); the mounting plate (3) is rotatably provided with a second bevel gear (10); the second bevel gear (10) is provided with a transmission gear (1001) meshing with the tooth groove (102); the lifting frame (5) is rotatably provided with a transmission shaft (501); the mounting plate (3) is rotatably provided with a first bevel gear (302) slidably engaged with the transmission shaft (501) and meshing with the second bevel gear (10); the transmission shaft (501) is provided with a third bevel gear (502); and the workbench (6) is rotatably provided with a fourth bevel gear (11) meshing with the third bevel gear (502).

6. A bridge-type outfitting welding gantry according to claim 5, characterized in that: A fixed rotating disk (12) is mounted on the fourth bevel gear (11); a plurality of first tooth blocks (1201) are mounted on the fixed rotating disk (12); a sliding rotating disk (14) is slidably mounted on one of the guide rotating shafts (13); a plurality of second tooth blocks (1401) are mounted on the sliding rotating disk (14); the plurality of first tooth blocks (1201) and the plurality of second tooth blocks (1401) can mesh with each other; a first spring (15) is sleeved on the guide rotating shaft (13); and two ends of the first spring (15) respectively contact the guide rotating shaft (13) and the sliding rotating disk (14).

7. The bridge-type outfitting welding gantry according to claim 1, characterized in that: The protection mechanism comprises a fan (24) mounted on the workbench (6); an air inlet end of the fan (24) is connected to the air tank (22); and an air outlet end thereof is connected to the air pipe (25); a motor (23) is mounted on the workbench (6); and an output end of the motor (23) is fixedly connected to a working shaft of the fan (24).

8. A bridge-type outfitting welding gantry according to claim 7, characterized in that: The cleaning mechanism comprises a cleaning shaft (26) rotatably mounted on the workbench (6); a roller brush (27) is mounted on the cleaning shaft (26); and the cleaning shaft (26) is connected to the motor (23) via a belt.

9. A bridge-type outfitting welding gantry according to claim 8, characterized in that: The roller brush (27) is made of metal.

10. A method for using a bridge-type outfitting welding gantry according to any one of claims 1 to 9 during welding operations, characterized in that: The steps include: Step 1: The roller (201) cooperates with the track system to move the gantry body (1) to a set working position via the trolley (2); and the hydraulic cylinder (7) is driven to drive the lifting frame (5) to rise or fall, so as to move the workbench (6) to the working surface (where the welding gun (20) is at a suitable distance from the welding position); Step 2: Controlling the welding equipment (21) and the gas tank (22) to work; so that the welding gun (20) and the gas tank (22) enter a standby state; and at this time, the welding wire passes through the wire feeding mechanism and the welding wire pipe (19), and the welding gun (20) is exposed; Step 3: The translation mechanism is actuated to drive the mounting plate (3) to move horizontally, thereby driving the workbench (6) to move; so that the welding gun (20) can weld the welding part; and the wire feeding mechanism will pull the welding wire reel (9) to rotate, so that the welding wire continues to pass through the welding wire pipe (19); thereby maintaining the exposed length of the welding wire unchanged; Step 4: Control the action of the protection mechanism to deliver the inert gas in the gas tank (22) to the welding position through the gas pipe (25); and the cleaning mechanism drives the roller brush (27) to rotate rapidly to pre-clean the next welding position.

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