Welding structure of high-strength stainless steel pipe

Abstract

The invention relates to the technical field of steel pipe welding, in particular to a high-strength stainless steel pipe welding structure which comprises two pairs of clamping pipes installed at the top end of a welding table and used for containing steel pipes, a mechanical arm and two air cylinders are further installed at the top end of the welding table, and the output ends of the air cylinders are in transmission connection with pressing plates for fixing the steel pipes. The output end of the mechanical arm is in transmission connection with a welding gun for welding steel pipes, the cleaning plates are symmetrically distributed, spur gears are fixedly connected to the sides, close to each other, of the two cleaning plates, fixing plates are rotationally connected to the ends, away from the cleaning plates, of the spur gears, and fixing frames are fixedly connected to the outer sides of the fixing plates. Through the structural design of the movable lifting mechanism, the movable lifting mechanism drives the cleaning plate to transversely move along the welding face and synchronously lift, impurities in a welding area are automatically scraped by means of friction force, the welding quality is effectively improved, the cleaning process is automatically carried out along with pushing of a steel pipe, automatic stopping is carried out after the steel pipe is in place, the structure is stable, and operation is efficient.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of steel pipe welding, in particular to a welding structure of high-strength stainless steel pipe. BACKGROUND

[0002] The high-strength stainless steel pipe is a high-performance pipe material strengthened by specific alloy design and manufacturing process. In engineering practice, in order to build a complete pipeline system, two or more high-strength stainless steel pipes need to be connected by welding to extend the length, which requires a contact welding tool.

[0003] In the current welding operation, the operator needs to wipe the surface contaminants of the steel pipe joint to be welded, and then carry it to the welding station for positioning and clamping. This step-by-step operation is complicated, not only increases the non-welding operation time, but also significantly reduces the overall work efficiency. Therefore, the present application provides a welding structure of high-strength stainless steel pipe. SUMMARY

[0004] The purpose of the present application is to solve the problem of cleaning the steel pipe to be welded in the background art, and to provide a welding structure of high-strength stainless steel pipe.

[0005] The technical scheme of the present application is a welding structure of high-strength stainless steel pipe, which comprises two pairs of clamping pipes for placing steel pipes on the top of the welding table, and a mechanical hand and two groups of cylinders are also installed on the top of the welding table. The output end of the cylinder is drivingly connected with a pressing plate for fixing the steel pipe, and the output end of the mechanical hand is drivingly connected with a welding gun for welding the steel pipe. The welding structure further comprises: At least two groups of symmetrical cleaning plates, one side of each group of cleaning plates is fixedly connected with a spur gear, the end of the spur gear away from the cleaning plate is rotatably connected with a fixed plate, the outer side of the fixed plate is fixedly connected with a fixed frame, the inside of the fixed frame is slidingly connected with two groups of guide rods, the two ends of the guide rods are slidingly connected with hollow pipes, and the hollow pipes are fixedly connected to the top of the welding table; A moving and lifting structure is connected with the fixed frame, which is used to drive the cleaning plate to lift and rub against the steel pipe when the steel pipe contacts the cleaning plate and pushes the cleaning plate to move; A self-rotating mechanism is arranged on the top of the welding table, which is used to drive the cleaning plate to rotate when the cleaning plate lifts; A reset mechanism is connected with the fixed frame, which is used to drive the cleaning plate to reset.

[0006] Optionally, the moving and lifting mechanism comprises a guide block, a guide pipe, a straight slot, and two groups of fixed rings. The guide block is fixedly connected to the bottom end of the fixed frame, the guide block is slidingly connected in the inside of the guide pipe, the straight slot is opened on the outside of the guide pipe, and the two groups of fixed rings are fixedly connected to the outside of the guide pipe. The end of the fixed ring away from the guide pipe is fixedly connected to the top of the welding table.

[0007] Optionally, the self-rotation mechanism comprises a rack, a concave plate, two sets of limiting rods and an L-shaped plate, the rack is engaged with the spur gear, the concave plate is slidingly connected to the outer side of the rack, the end of the concave plate away from the rack is fixedly connected to the outer side of the fixed plate, the two sets of limiting rods are slidingly connected to the inner part of the rack, the L-shaped plate is fixedly connected to the top end of the welding table, and the end of the L-shaped plate close to the rack is fixedly connected to the two sets of limiting rods.

[0008] Optionally, the reset mechanism comprises a side plate and a tension spring, the side plate is fixedly connected to the outer side of the two sets of guide rods, and the tension spring is fixedly connected between the side plate and the fixed frame.

[0009] Optionally, the bottom end of the guide block is designed in a "spherical" shape, and the diameter of the "spherical" shape is matched with the size of the inner wall of the guide pipe.

[0010] Optionally, the top end of the welding table is provided with a top plate, the bottom end of the top plate is fixedly connected with a protective cloth for shielding the welding slag, the end of the protective cloth away from the top plate is fixedly connected with a bottom plate, the bottom plate is fixedly connected with the top end of the welding table, the top end of the welding table is fixedly connected with two sets of limiting rods, the two sets of limiting rods are slidingly connected through the top plate, the top end of the two sets of limiting rods is fixedly connected with a connecting plate, the connecting plate and the top plate are fixedly connected with a compression spring, the bottom end of the fixed frame is provided with a traction mechanism, when the fixed frame moves, the traction mechanism pulls the compression spring to move upward to unfold the protective cloth, and the outer periphery of the fixed frame is provided with a limiting mechanism for limiting the reset after the movement of the fixed frame.

[0011] Optionally, the traction mechanism comprises a traction rope, two sets of guide wheels and a guide wheel, the traction rope is fixedly connected to the bottom end of the fixed frame, the end of the traction rope away from the fixed frame is fixedly connected to the top end of the top plate, the two sets of guide wheels are fixedly connected to the top end of the welding table, the guide wheel is fixedly connected to the bottom end of the connecting plate, and the guide wheel and the two sets of guide wheels are attached to the outer side of the traction rope.

[0012] Optionally, the limiting mechanism comprises a plurality of clamping grooves, a clamping rod, a square rod, a limiting pipe, a support plate, a support plate and a tension spring, the plurality of clamping grooves are formed on the outer side of the guide rod, the clamping rod is slidingly connected to the inner part of the clamping groove, the square rod is fixedly connected to the end of the clamping rod away from the guide rod, the limiting pipe is slidingly connected to the outer side of the square rod, and the end of the limiting pipe away from the square rod is fixedly connected to the outer side of the fixed frame, the support plate and the support plate are respectively fixedly connected to the top end of the limiting pipe and the square rod, and the tension spring is fixedly connected between the support plate and the support plate.

[0013] Optionally, the cross section of the clamping rod is designed in a "right triangle".

[0014] Optionally, the protective cloth is made of aramid material.

[0015] Compared with the prior art, the present application has at least one of the following beneficial technical effects: The present application realizes that the mobile lifting mechanism drives the cleaning plate to move transversely along the welding surface and is lifted synchronously, automatically scrapes off impurities in the welding area by means of friction, effectively improves the welding quality, and the cleaning process is automatically performed as the steel pipe advances and is automatically stopped after reaching the position, so that the structure is stable and the operation is efficient.

[0016] Further through the structural design of the traction mechanism, the traction mechanism can automatically unfold the protective cloth when the steel pipe moves, effectively block the splashed welding slag, and protect the safety of personnel; after the welding is completed, the protective cloth is automatically retracted and reset, avoiding blocking the line of sight, improving the safety, and ensuring the convenience and efficiency of the welding operation. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of a high-strength stainless steel pipe welding structure; Figure 2 It is a schematic diagram of the structure of a cylinder and a welding gun; Figure 3 It is a schematic diagram of the local structure of a high-strength stainless steel pipe welding structure; Figure 4 It is a schematic diagram of the cross section of a guide pipe; Figure 5 It is an exploded schematic diagram of a cleaning plate and a spur gear; Figure 6 It is a schematic diagram of the structure of a rack and a concave plate; Figure 7 It is a schematic diagram of the structure of a compression spring and a traction rope; Figure 8 It is Figure 7 It is an enlarged schematic diagram of A of the above-mentioned; Figure 9 It is a schematic diagram of the structure of a square rod and a clamping rod.

[0018] Reference signs: 1, welding table; 2, clamped pipe; 3, cylinder; 4, pressing plate; 5, mechanical hand; 6, welding gun; 7, cleaning plate; 8, spur gear; 9, fixed plate; 10, fixed frame; 11, guide rod; 12, hollow pipe; 13, guide block; 14, guide pipe; 15, fixed ring; 16, side plate; 17, tension spring I; 18, rack; 19, concave plate; 20, limiting rod I; 21, L plate; 22, top plate; 23, protective cloth; 24, bottom plate; 25, limiting rod II; 26, connecting plate; 27, compression spring; 28, traction rope; 29, guide wheel I; 30, guide wheel II; 31, clamping groove; 32, clamping rod; 33, square rod; 34, limiting pipe; 35, support plate I; 36, support plate II; 37, tension spring III. DETAILED DESCRIPTION

[0019] In order to make the application purposes, features and advantages of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings of the embodiments of the present application. Obviously, the embodiments described below are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0020] In the description of the present application, it should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there can be a component disposed therebetween.

[0021] The technical solutions of the present application will be further described below in conjunction with the drawings and through specific embodiments.

[0022] As shown in Figure 1 and Figure 2 , the present application proposes a welding structure of high-strength stainless steel pipe, which comprises two pairs of pipe clamping 2 installed on the top of the welding table 1 for placing the steel pipe. The pipe clamping 2 can play a simple limiting role on the steel pipe. First, place two steel pipes on the corresponding pipe clamping 2, and the welding table 1 top is also provided with a mechanical hand 5 and two groups of air cylinders 3. The output end of the air cylinder 3 is drivingly connected with a pressing plate 4 for fixing the steel pipe. Then the air cylinder 3 controls the pressing plate 4 to move downward, slightly extruding the steel pipe. The extrusion degree of the pressing plate 4 on the steel pipe does not affect the horizontal movement of the steel pipe. At this time, when the two steel pipes are moved towards each other, the two steel pipes can be precisely attached together at the welding position. The output end of the mechanical hand 5 is drivingly connected with a welding gun 6 for welding the steel pipe. The mechanical hand 5 controls the welding gun 6 to move towards the position close to the steel pipe, and moves to the appropriate welding position according to the size of the steel pipe. The welding gun 6 is started to perform welding operation on the contact position of the two steel pipes. It should be noted that the mechanical hand 5 and the welding gun 6 are both conventional technologies in existing welding devices, but more elaboration.

[0023] As an embodiment, as shown in Figure 3 , Figure 4 and Figure 5As shown, the welding structure further comprises at least two groups of symmetrically distributed cleaning plates 7, when the two steel pipes are pushed close to each other, the steel pipes will contact the cleaning plates 7 and exert extrusion force on the cleaning plates 7, one side of the two groups of cleaning plates 7 close to each other is fixedly connected with a spur gear 8, the cleaning plates 7 under stress will drive the spur gear 8 to move synchronously in the moving direction of the steel pipes, the end of the spur gear 8 away from the cleaning plates 7 is rotatably connected with a fixed plate 9, the movement of the spur gear 8 will drive the fixed plate 9 to move, the outer side of the fixed plate 9 is fixedly connected with a fixed frame 10, the inside of the fixed frame 10 is slidably connected with two groups of guide rods 11, and the movement of the fixed plate 9 will drive the fixed frame 10 to move synchronously along the outer side of the guide rods 11, a moving lifting structure is connected with the fixed frame 10, when the steel pipes contact the cleaning plates 7 and push the cleaning plates 7 to move, the moving lifting structure drives the cleaning plates 7 to lift and rub against the steel pipes, and when the fixed frame 10 moves, the fixed frame 10 drives the moving lifting structure to operate, and the moving lifting structure drives the fixed frame 10 to move obliquely upward on the basis of normal movement of the fixed frame 10, the two ends of the guide rods 11 are slidably connected with a hollow pipe 12, and the hollow pipe 12 is fixedly connected to the top end of the welding table 1, and the oblique upward movement of the fixed frame 10 drives the guide rods 11 to move upward synchronously along the inside of the hollow pipe 12, and the hollow pipe 12 guides the guide rods 11 to move upward more stably, and when the fixed frame 10 moves obliquely upward, the fixed frame 10 also drives the cleaning plates 7 to move synchronously through the fixed plate 9 and the spur gear 8, at this time, when the cleaning plates 7 move transversely close to the steel pipes, the upward movement of the cleaning plates 7 can rub against the welding surface of the steel pipes, and the cleaning plates 7 can clean and scrape off the impurities attached to the welding surface of the steel pipes through friction, thereby improving the subsequent welding quality, and after the steel pipes move a certain distance, the moving lifting mechanism drives the edge of the spur gear 8 to abut against the outer side of the steel pipes, and the steel pipes block the downward movement direction of the spur gear 8, so that the moving lifting mechanism stops operating at this time, and the cleaning plates 7 end the cleaning of the steel pipes.

[0024] Further, as shown in Figure 4 , Figure 5 and Figure 6 , the self-rotation mechanism of the welding structure is arranged at the top end of the welding table 1, for driving the cleaning plates 7 to rotate when the cleaning plates 7 lift, when the spur gear 8 moves upward under the influence of the moving lifting mechanism, the spur gear 8 will rotate in cooperation with the self-rotation mechanism, and the rotation of the spur gear 8 at this time will drive the cleaning plates 7 to rotate synchronously, and the rotation of the cleaning plates 7 will increase the friction between the cleaning plates 7 and the steel pipes, and the cleaning effect of the welding surface of the steel pipes will be better in cooperation with the upward friction of the cleaning plates 7.

[0025] Further, as shown in Figure 4As shown, the reset mechanism of the welding structure is connected with the fixing frame 10, for driving the cleaning plate 7 to reset, when the fixing frame 10 moves, the fixing frame 10 will drive the reset mechanism to operate, at this time, the reset mechanism will generate elastic potential energy, after the welding operation is completed, the steel pipe is moved transversely in any direction, the edge of the steel pipe will be separated from the fitting of the spur gear 8, that is, when the spur gear 8 is fitted on the outer side of the steel pipe, the blocking of the steel pipe to the cleaning plate 7 is completed, the reset mechanism will pull the fixing frame 10 to reset, the fixing frame 10 resets along the outside of the guide rod 11, drives the cleaning plate 7 to move in the reverse direction through the fixed plate 9 and the spur gear 8, and when the fixing frame 10 resets, it drives the moving lifting mechanism to reset, the moving lifting mechanism drives the fixing frame 10 to move downward, and the fixing frame 10 moves downward to drive the cleaning plate 7 to move downward through the fixed plate 9 and the spur gear 8, finally, the cleaning plate 7 moves in the obliquely downward direction under the action of the reset mechanism and the moving lifting mechanism.

[0026] As an embodiment, as shown in Figure 3 and Figure 4 , the moving lifting mechanism includes a guide block 13, a guide pipe 14, a straight slot, and two sets of fixed rings 15, which will be described below: The guide block 13 is fixedly connected to the bottom end of the fixing frame 10, and the fixing frame 10 drives the guide block 13 to move when the fixing frame 10 moves, the guide block 13 is slidingly connected inside the guide pipe 14, the bottom end of the guide block 13 is designed in a "spherical" shape, the diameter of the "spherical" shape is matched with the size of the inner wall of the guide pipe 14, and the "spherical" design of the bottom end of the guide block 13 slides along the inside of the guide pipe 14, since the guide pipe 14 is designed to be inclined, the guide block 13 moves in the obliquely upward direction according to the inclination of the guide pipe 14, the straight slot is opened on the outside of the guide pipe 14, the size of the straight slot ensures that the "spherical" design of the guide block 13 does not separate from the inside of the guide pipe 14, and does not affect the normal movement of the middle section of the guide block 13, when the guide block 13 moves obliquely upward, the guide block 13 drives the fixing frame 10 to move obliquely upward, and finally realizes that the cleaning plate 7 is fitted on the steel pipe to be welded for friction cleaning operation, the two sets of fixed rings 15 are fixedly connected to the outside of the guide pipe 14, the end of the fixed ring 15 away from the guide pipe 14 is fixedly connected to the top end of the welding table 1, and the fixed ring 15 supports the guide pipe 14.

[0027] Further, as shown in Figure 4 , Figure 5 and Figure 6 , the self-rotating mechanism includes a rack 18, a concave plate 19, two sets of limiting rods 20 and an L-shaped plate 21, which will be described below: The rack 18 is engaged with the spur gear 8, when the spur gear 8 is moved upwards, the spur gear 8 will rotate by adhering to the edge of the rack 18, the rotation of the spur gear 8 will drive the cleaning plate 7 to rotate, thereby increasing the friction between the cleaning plate 7 and the steel pipe, improving the cleaning effect, the concave plate 19 is slidingly connected to the outer side of the rack 18, the end of the concave plate 19 away from the rack 18 is fixedly connected to the outer side of the fixed plate 9, and when the fixed plate 9 moves transversely or obliquely, the fixed plate 9 can drive the rack 18 to move transversely through the concave plate 19, ensuring that the rack 18 is always in engagement with the spur gear 8, so that the spur gear 8 can continue to rotate, the two sets of limiting rods one 20 are slidingly connected to the inside of the rack 18, and the rack 18 moves transversely on the outside of the limiting rods one 20, the limiting rods one 20 ensure that the rack 18 can only move transversely and cannot move vertically, thereby ensuring the rotation of the spur gear 8, the L plate 21 is fixedly connected to the top end of the welding table 1, and the end of the L plate 21 close to the rack 18 is fixedly connected to the two sets of limiting rods one 20, and the L plate 21 supports the limiting rods one 20.

[0028] Further, as shown in Figure 4 The reset mechanism includes a side plate 16 and a tension spring one 17, and the reset mechanism will be described below: The side plate 16 is fixedly connected to the outer side of the two sets of guide rods 11, and the side plate 16 can move upwards synchronously with the upward movement of the guide rods 11, the tension spring one 17 is fixedly connected between the side plate 16 and the fixed frame 10, when the fixed frame 10 moves, the fixed frame 10 will cooperate with the side plate 16 to stretch the tension spring one 17 to generate elastic potential energy, and after the steel pipe blocks the spur gear 8, the tension spring one 17 will release the elastic potential energy to drive the fixed frame 10 to reset.

[0029] As an embodiment, as shown in Figure 7 , Figure 8 and Figure 9As shown, the top end of the welding table 1 is provided with a top plate 22, the bottom end of the top plate 22 is fixedly connected with a protective cloth 23 for shielding the welding slag, in the initial state, the top plate 22 is in extrusion of the protective cloth 23, the protective cloth 23 is in the wrinkle shrinkage state, the end of the protective cloth 23 away from the top plate 22 is fixedly connected with a bottom plate 24, the bottom plate 24 is fixedly connected with the top end of the welding table 1, the top end of the welding table 1 is fixedly connected with two groups of limiting rods two 25, the two groups of limiting rods two 25 are slidingly penetrated through the top plate 22, the top end of the two groups of limiting rods two 25 is fixedly connected with a connecting plate 26, the connecting plate 26 and the top plate 22 are fixedly connected with a compression spring 27, the bottom end of the fixed frame 10 is provided with a traction mechanism, when the fixed frame 10 moves, the traction mechanism pulls the top plate 22 to move upwards to make the protective cloth 23 unfold, when the fixed frame 10 moves, the fixed frame 10 drives the traction mechanism to operate, and the traction mechanism pulls the top plate 22 to move upwards at this time, and the top plate 22 moving upwards pulls the protective cloth 23 to unfold, when the protective cloth 23 unfolds, the protective cloth 23 can play a certain protective role on the welding position of the steel pipe, the protective cloth 23 can block the welding slag splashed during welding, and the top plate 22 also extrudes the compression spring 27 along the outside of the limiting rod two 25 when the top plate 22 moves upwards, so that the compression spring 27 deforms to generate elastic potential energy, the periphery of the fixed frame 10 is provided with a limiting mechanism, the limiting mechanism is used for limiting the reset after the fixed frame 10 moves, and the limiting mechanism can be clamped in the inside of the guide rod 11, so as to limit the fixed frame 10, so that the fixed frame 10 can only move towards the direction of the protective cloth 23 and cannot reset, at this time, the fixed frame 10 cannot reset, which can ensure that the protective cloth 23 is in a continuous unfolding state, when the welding is finished, the unfolded protective cloth 23 can be cleaned, and then, the clamping of the limiting mechanism with the guide rod 11 is ended, at this time, the tensile spring one 17 releases the elastic potential energy to pull the fixed frame 10 to reset, and the fixed frame 10 resets to drive the traction mechanism to end the pulling of the top plate 22, and the compression spring 27 releases the elastic potential energy to push the top plate 22 to move downwards, and the top plate 22 moving downwards extrudes the protective cloth 23 again, so that the protective cloth 23 is wrinkle shrinkage, thereby avoiding that the protective cloth 23 unfolds to block the vision of the staff.

[0030] Further, as shown in the figure, Figure 7 The traction mechanism includes a traction rope 28, two groups of guide wheels one 29 and guide wheels two 30, which will be described below in detail. The traction rope 28 is fixed at the bottom end of the fixed frame 10, and the fixed frame 10 pulls the traction rope 28 when moving. The end of the traction rope 28 away from the fixed frame 10 is fixed to the top end of the top plate 22. Because the length of the traction rope 28 is limited and in a taut state, the traction rope 28 is pulled to move the top plate 22 upward, so that the top plate 22 presses the compression spring 27 at the top end. The two groups of guide wheels one 29 are fixed at the top end of the welding table 1. The guide wheels two 30 are fixed at the bottom end of the connecting plate 26. The guide wheels two 30 and the two groups of guide wheels one 29 are attached to the outer side of the traction rope 28. The two groups of guide wheels one 29 and the guide wheels two 30 guide the traction direction of the traction rope 28, so that the fixed frame 10 can pull the top plate 22 when moving.

[0031] Further, as shown in Figure 7 、 Figure 8 and Figure 9 , the limiting mechanism includes multiple sets of clamping grooves 31, clamping rods 32, square rods 33, limiting tubes 34, support plates one 35, support plates two 36, and extension springs three 37. The limiting mechanism is described in detail as follows. A plurality of groups of clamping grooves 31 are formed on the outer side of the guide rod 11, a clamping rod 32 is slidingly connected to the inner side of the clamping groove 31, in the initial state, the clamping rod 32 is located in the inner side of the clamping groove 31, a square rod 33 is fixedly connected to one end of the clamping rod 32 away from the guide rod 11, a limiting tube 34 is slidingly connected to the outer side of the square rod 33, and one end of the limiting tube 34 away from the square rod 33 is fixedly connected to the outer side of the fixed frame 10, when the fixed frame 10 moves away from the direction of the tension spring 17, the fixed frame 10 will drive the square rod 33 to move synchronously through the limiting tube 34, and the movement of the square rod 33 will drive the clamping rod 32 to move, the cross section of the clamping rod 32 is designed as a "right triangle", at this time the inclined surface of the clamping rod 32 will press the edge of the clamping groove 31, and the clamping rod 32 will move away from the guide rod 11 under the force, and the movement of the clamping rod 32 will separate from the inner side of the clamping groove 31, so that the fixed frame 10 can move normally, a support plate one 35 and a support plate two 36 are fixedly connected to the top of the limiting tube 34 and the square rod 33 respectively, a tension spring three 37 is fixedly connected between the support plate one 35 and the support plate two 36, and when the square rod 33 moves away from the guide rod 11, the square rod 33 will also drive the support plate two 36 to pull the tension spring three 37, so that the tension spring three 37 is deformed to generate elastic potential energy, when the clamping rod 32 and the next group of clamping grooves 31 are in the same horizontal plane, the tension spring three 37 will release the elastic potential energy to drive the square rod 33 to reset by pulling the support plate two 36, and the square rod 33 in turn drives the clamping rod 32 to be clamped in another group of clamping grooves 31, when the fixed frame 10 is reset by the tension spring 17 pulling, since the clamping rod 32 is clamped in the clamping groove 31, and the flat direction of the clamping rod 32 is blocked by the clamping groove 31 on the reset route and cannot move, so that the fixed frame 10 cannot be reset, and the protective cloth 23 is ensured to be in a continuous unfolded state, when the fixed frame 10 needs to be reset, only the square rod 33 needs to be manually pulled away from the guide rod 11, and the square rod 33 will drive the clamping rod 32 to separate from the inner side of the clamping groove 31, so that the fixed frame 10 can be normally reset.

[0032] In addition, as shown in Figure 7 The protective cloth 23 is made of aramid material, has good flexibility, and is fireproof, and is suitable for the working scene required by the welding structure of the embodiment.

[0033] In this embodiment, first, two steel pipes are placed on the corresponding clamping pipes 2, then the cylinder 3 controls the downward movement of the pressing plate 4, slightly extruding the steel pipes, at this time, the two steel pipes are moved towards each other, the steel pipes will contact the cleaning plate 7 and exert extrusion force on the cleaning plate 7, the cleaning plate 7 will move in the direction of the steel pipes, the spur gear 8 will move in the direction of the cleaning plate 7, the fixed plate 9 will move in the direction of the spur gear 8, and the fixed frame 10 will move along the outside of the guide rod 11, the guide block 13 will move in the direction of the fixed frame 10, the "spherical" design at the bottom of the guide block 13 will slide along the inside of the guide pipe 14, since the guide pipe 14 is inclined, the guide block 13 will move in the inclined direction of the guide pipe 14, the guide block 13 will move in the inclined direction of the fixed frame 10, the fixed frame 10 will move in the inclined direction of the hollow pipe 12, and the fixed frame 10 will move in the inclined direction of the fixed plate 9 and the spur gear 8, at this time, the upward movement of the cleaning plate 7 can rub against the welding surface of the steel pipe, the cleaning plate 7 can clean and scrape off the impurities attached to the welding surface of the steel pipe through friction, after the steel pipe moves a certain distance, the edge of the spur gear 8 will finally adhere to the outside of the steel pipe, the steel pipe will block the downward movement of the spur gear 8, the spur gear 8 will no longer move, and the cleaning of the steel pipe by the cleaning plate 7 will end, when the spur gear 8 moves upward, the spur gear 8 will rotate along the edge of the rack 18, the rotation of the spur gear 8 will cause the cleaning plate 7 to rotate, thereby increasing the friction between the cleaning plate 7 and the steel pipe and improving the cleaning effect, and when the fixed plate 9 moves horizontally or obliquely, since the rack 18 is connected to the inside of the concave plate 19, the fixed plate 9 can move the rack 18 horizontally through the concave plate 19, ensuring that the rack 18 is always in meshing state with the spur gear 8, so that the spur gear 8 can continue to rotate, and when the fixed frame 10 moves, the fixed frame 10 will deform the tension spring 17 to generate elastic potential energy, after the steel pipe is welded, the steel pipe is extracted, the blocking of the spur gear 8 ends, the tension spring 17 releases the elastic potential energy, thereby pulling the fixed frame 10 back to its original position, and finally the cleaning plate 7 will move in the oblique downward direction along with the fixed frame 10 to return to its original position; In the initial state, the top plate 22 is pressed against the protective cloth 23, the protective cloth 23 is in the crumpled and contracted state, and the fixed frame 10 pulls the traction rope 28 when moving. Because the length of the traction rope 28 is limited and in the taut state, the traction rope 28 is forced to pull the top plate 22 upward, so that the top plate 22 presses the compression spring 27 at the top end, and the top plate 22 moves upward to pull the protective cloth 23 to expand. When the protective cloth 23 expands, the protective cloth 23 can play a protective role on the welded part of the steel pipe. The protective cloth 23 can block the welding slag splashed during welding. The clamping rod 32 is located in the inside of the clamping groove 31. When the fixed frame 10 moves away from the direction of the tension spring 17, the fixed frame 10 drives the square rod 33 to move synchronously through the limiting tube 34. The square rod 33 moves to drive the clamping rod 32 to move. At this time, the inclined surface of the clamping rod 32 presses the edge of the clamping groove 31, and the clamping rod 32 is forced to move away from the direction of the guide rod 11. The clamping rod 32 moves to separate from the inside of the clamping groove 31, so that the fixed frame 10 can move normally. When the square rod 33 moves away from the direction of the guide rod 11, the square rod 33 drives the support plate two 36 to pull the tension spring three 37, so that the tension spring three 37 is deformed to generate elastic potential energy. When the clamping rod 32 is at the same horizontal plane as the next group of clamping grooves 31, the tension spring three 37 releases the elastic potential energy to drive the square rod 33 to reset through pulling the support plate two 36. The square rod 33 drives the clamping rod 32 to be clamped in another group of clamping grooves 31. When the tension spring one 17 pulls the fixed frame 10 to reset, because the clamping rod 32 is clamped in the clamping groove 31, and the plane direction of the clamping rod 32 is blocked by the clamping groove 31 on the reset route and cannot move, so that the fixed frame 10 cannot reset, and the protective cloth 23 is ensured to be in the continuously expanded state. When the protective cloth 23 needs to be crumpled and contracted, the square rod 33 is manually pulled away from the direction of the guide rod 11. The square rod 33 drives the clamping rod 32 to separate from the inside of the clamping groove 31, so that the fixed frame 10 can reset normally. At this time, the compression spring 27 also releases the elastic potential energy to push the top plate 22 downward. The top plate 22 moves downward to press the protective cloth 23 again, so that the protective cloth 23 is crumpled and contracted, thereby avoiding that the protective cloth 23 expands to block the view of the staff.

[0034] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for some technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A welding structure for a high-strength stainless steel pipe, comprising a welding table (1) with two pairs of clamping pipes (2) at the top for placing the steel pipe, a robotic arm (5) and two sets of cylinders (3) also mounted at the top of the welding table (1), the output end of the cylinders (3) being driven connected to a pressure plate (4) for fixing the steel pipe, and the output end of the robotic arm (5) being driven connected to a welding gun (6) for welding the steel pipe, characterized in that, Also includes: At least two sets of symmetrically distributed cleaning plates (7), with a spur gear (8) fixedly connected to the side of each set of cleaning plates (7) that is close to each other. A fixed plate (9) is rotatably connected to the end of the spur gear (8) that is away from the cleaning plate (7). A fixed frame (10) is fixedly connected to the outside of the fixed plate (9). Two sets of guide rods (11) are slidably connected inside the fixed frame (10). Hollow tubes (12) are slidably connected to both ends of the guide rods (11). The hollow tubes (12) are fixedly connected to the top of the welding table (1). The movable lifting structure is connected to the fixed frame (10) and is used to drive the cleaning plate (7) to rise and fall and rub against the steel pipe when the steel pipe contacts the cleaning plate (7) and pushes the cleaning plate (7) to move. The self-rotation mechanism is set at the top of the welding table (1) and is used to drive the cleaning plate (7) to rotate when the cleaning plate (7) is raised and lowered; The reset mechanism is connected to the fixed frame (10) and is used to drive the cleaning plate (7) to reset.

2. The welded structure of a high-strength stainless steel pipe according to claim 1, characterized in that, The movable lifting mechanism includes a guide block (13), a guide tube (14), a straight slot, and two sets of fixing rings (15). The guide block (13) is fixed to the bottom end of the fixed frame (10). The guide block (13) is slidably connected inside the guide tube (14). The straight slot is opened on the outside of the guide tube (14). Both sets of fixing rings (15) are fixed to the outside of the guide tube (14). The end of the fixing ring (15) away from the guide tube (14) is fixed to the top of the welding table (1).

3. The welded structure of a high-strength stainless steel pipe according to claim 1, characterized in that, The self-rotating mechanism includes a rack (18), a concave plate (19), two sets of limiting rods (20) and an L-plate (21). The rack (18) meshes with a spur gear (8). The concave plate (19) is slidably connected to the outside of the rack (18). The end of the concave plate (19) away from the rack (18) is fixedly connected to the outside of the fixing plate (9). Both sets of limiting rods (20) slide through the inside of the rack (18). The L-plate (21) is fixedly connected to the top of the welding table (1), and the end of the L-plate (21) near the rack (18) is fixedly connected to the two sets of limiting rods (20).

4. The welded structure of a high-strength stainless steel pipe according to claim 1, characterized in that, The reset mechanism includes a side plate (16) and a tension spring (17). The side plate (16) is fixed to the outside of two sets of guide rods (11), and the tension spring (17) is fixed between the side plate (16) and the fixing frame (10).

5. The welded structure of a high-strength stainless steel pipe according to claim 2, characterized in that, The bottom end of the guide block (13) is designed in a "spherical" shape, and the diameter of the "spherical" shape is adapted to the size of the inner wall of the guide tube (14).

6. The welded structure of a high-strength stainless steel pipe according to claim 1, characterized in that, The welding table (1) has a top plate (22) at its top end. A protective cloth (23) for shielding welding slag is fixed to the bottom end of the top plate (22). A bottom plate (24) is fixed to the end of the protective cloth (23) away from the top plate (22). The bottom plate (24) is fixed to the top end of the welding table (1). Two sets of limiting rods (25) are fixed to the top end of the welding table (1). Both sets of limiting rods (25) slide through the top plate (22). A connecting plate (26) is fixedly connected to the top of each of the two rods (25). A compression spring (27) is fixedly connected between the connecting plate (26) and the top plate (22). A traction mechanism is provided at the bottom of the fixed frame (10). The traction mechanism is used to pull the compression spring (27) upward when the fixed frame (10) moves, so that the protective cloth (23) unfolds. A limit mechanism is provided on the periphery of the fixed frame (10). The limit mechanism is used to limit the reset after the fixed frame (10) moves.

7. The welded structure of a high-strength stainless steel pipe according to claim 6, characterized in that, The traction mechanism includes a traction rope (28), two sets of guide wheels (29) and guide wheels (30). The traction rope (28) is fixed to the bottom end of the fixed frame (10). The end of the traction rope (28) away from the fixed frame (10) is fixed to the top end of the top plate (22). The two sets of guide wheels (29) are fixed to the top end of the welding table (1). The guide wheels (30) are fixed to the bottom end of the connecting plate (26). The guide wheels (30) and the two sets of guide wheels (29) are all attached to the outside of the traction rope (28).

8. The welded structure of a high-strength stainless steel pipe according to claim 6, characterized in that, The limiting mechanism includes multiple sets of slots (31), a locking rod (32), a square rod (33), a limiting tube (34), a first support plate (35), a second support plate (36), and a third tension spring (37). The multiple sets of slots (31) are all opened on the outside of the guide rod (11). The locking rod (32) is slidably connected to the inside of the slot (31). The square rod (33) is fixedly connected to the end of the locking rod (32) away from the guide rod (11). The limiting tube (34) is slidably connected to the outside of the square rod (33), and the end of the limiting tube (34) away from the square rod (33) is fixedly connected to the outside of the fixing frame (10). The first support plate (35) and the second support plate (36) are respectively fixedly connected to the top of the limiting tube (34) and the square rod (33). The third tension spring (37) is fixedly connected between the first support plate (35) and the second support plate (36).

9. The welded structure of a high-strength stainless steel pipe according to claim 8, characterized in that, The cross-section of the lever (32) is designed as a right triangle.

10. The welded structure of a high-strength stainless steel pipe according to claim 6, characterized in that, The protective fabric (23) is made of aramid fiber.

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