Automatic repair welding device for internal welding of spiral welding steel pipe

Abstract

The utility model discloses an automatic repair welding device for internal welding of a spiral welding steel pipe, which is characterized in that an automatic adjusting repair welding mechanism is mounted on the side edge of a suspended base, a pipe body movement driving mechanism is arranged at the bottom of one side of the suspended base, rails are symmetrically connected to the top of the suspended base, and a welding moving trolley is movably connected to the tops of the rails; according to the welding movable trolley, the position of the welding movable trolley in different directions can be conveniently adjusted through an adjusting structure composed of the rail matched with the welding arm lifting support, the lifting rack, the driving motor and the driving gear, and therefore the repair welding positions of a conducting rod and a welding head can be flexibly adjusted; the inner wall of the steel pipe is subjected to more accurate repair welding treatment, the welding precision is improved, meanwhile, a traditional manual repair welding mode is replaced, the appearance quality and the weld bead fusion depth after repair welding can both meet the corresponding quality requirements, and the work efficiency of repair welding and the product quality are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of spiral welded steel pipe repair welding, in particular to an automatic internal repair welding device for a spiral welded steel pipe. Background Art

[0002] Spiral welded steel pipe refers to a steel pipe with seams on the surface that is formed by bending steel strips or steel plates into round, square and other shapes and then welding them. According to the shape of the weld, it can be divided into straight welded pipe and spiral welded pipe. Electric welded steel pipes are used in oil drilling and machinery manufacturing, while spiral welded pipes are mainly used for oil and gas transportation, pipe piles, bridge piers, etc. At present, welded steel pipes have lower costs and higher production efficiency than seamless steel pipes. During the production and processing of spiral welded steel pipes, the inner wall of the steel pipe needs to be repaired by welding to ensure the welding strength of the steel pipe.

[0003] At present, the repair work of the weld inside spiral welded steel pipe has been carried out by manual hand-held welding. The appearance quality and weld penetration depth after manual hand-held welding repair do not meet the corresponding quality requirements. When the weld defect inside the spiral pipe reaches a certain length, the steel pipe will be downgraded after the hand-held welding repair is completed. The work efficiency of manual hand-held welding is low, which affects the product quality and will also cause certain losses to the company. Utility Model Content

[0004] The utility model provides an automatic repair welding device for the internal weld of a spiral welded steel pipe, which can effectively solve the problem proposed in the above background technology that the internal weld repair work of a spiral welded steel pipe has always been carried out by manual hand welding, and the appearance quality and weld penetration depth after the manual hand welding repair cannot meet the corresponding quality requirements. When the internal weld defect of the spiral pipe reaches a certain length, the steel pipe is downgraded after the hand welding repair is completed. The manual hand welding work efficiency is low, which affects the product quality and also causes certain losses to the company.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a spiral welded steel pipe internal welding automatic repair welding device, comprising a suspended base, an automatic adjustment repair welding mechanism is installed on the side of the suspended base, and a pipe body movement driving mechanism is arranged at the bottom of one side of the suspended base;

[0006] The automatic adjustment repair welding mechanism comprises a track, a welding mobile trolley, a welding arm lifting bracket, a wire feeding box, a fine adjustment trolley, a conductive rod, a welding head and a control box;

[0007] The top of the suspended base is symmetrically connected with a track, the top of the track is movably connected with a welding mobile trolley, a control box is installed on one side of the top of the welding mobile trolley, and a welding arm lifting bracket is provided on one side of the suspended base;

[0008] The bottom of the welding arm lifting bracket is connected to a wire feeding box, and the top of the wire feeding box is adjustably connected to the bottom of the welding arm lifting bracket through a fine-tuning trolley, a conductive rod is installed on one side of the wire feeding box, and the end of the conductive rod is connected to a welding head;

[0009] The pipe body movement driving mechanism includes a pipe transport roller, an active rotating roller, a passive rotating roller, a rotating motor, a bracket, a material turning rack, an oil cylinder and a rotating base;

[0010] Two groups of pipe transport rollers are arranged at the bottom of one side of the suspended base, an active rotating roller is installed at one side of the middle between the two groups of pipe transport rollers, and a passive rotating roller is installed at the other side of the middle between the two groups of pipe transport rollers, the active rotating rollers and the passive rotating rollers are located in corresponding positions, and a rotating motor is installed at the edge of the active rotating roller;

[0011] A bracket is installed between the active rotating roller, the passive rotating roller and the two sets of pipe transport rollers, the top of the bracket is connected to one side of the tipping rack, the bottom of the tipping rack is connected to an oil cylinder, and the bottom of the oil cylinder is connected to a rotating base.

[0012] Preferably, a touch screen is provided on one side of the control box, and a PLC controller is installed inside the control box. The rail is an electric rail, and the welding mobile carriage is driven to move by the rail.

[0013] Preferably, a lifting rack is fixedly installed on one side end of the welding arm lifting bracket, a driving motor is fixedly installed on the top of the welding mobile trolley, the input end of the driving motor is electrically connected to the output end of the PLC controller, and the output shaft end of the driving motor is connected to a driving gear;

[0014] The top of the welding mobile trolley is rotatably connected to connecting rods at positions on both sides of the driving motor, and the ends of the connecting rods are rotatably connected to limited turntables at positions corresponding to the edges of the welding arm lifting bracket.

[0015] Preferably, limit rails are provided on both side edges of the welding arm lifting bracket, and the limit turntable is rotatably connected to the outer side of the limit rails, and the connecting rod is rotatably connected to the top of the welding mobile trolley through a rotating support.

[0016] Preferably, the fine-tuning trolley specifically includes an adjustment frame, a connecting slider and an adjustment screw;

[0017] The bottom of the welding arm lifting bracket is connected to an adjustment frame, the inner side of the adjustment frame is embedded with a connecting slider for sliding connection, the interior of the connecting slider is threadedly connected to an adjusting screw, and the adjusting screw is rotatably connected to the inside of both sides of the adjustment frame through a bearing seat.

[0018] Preferably, both sides of the pipe conveying roller are supported and installed by roller frames, and the pipe conveying roller is rotatably connected to the roller frames;

[0019] The active rotating roller and the passive rotating roller are both supported and installed by a rotating bracket, and the bottom of the rotating bracket and the rotating motor are both installed on the top of the supporting bottom plate.

[0020] Compared with the prior art, the utility model has the following beneficial effects: the utility model has a scientific and reasonable structure and is safe and convenient to use:

[0021] 1. The adjustment structure composed of the rail, welding arm lifting bracket, lifting rack, drive motor and drive gear is convenient to adjust the position of the welding mobile trolley in different directions, so as to flexibly adjust the welding position of the conductive rod and the welding head, realize more accurate welding treatment on the inner wall of the steel pipe, improve the welding accuracy, and replace the traditional manual welding method, so that the appearance quality and weld penetration after welding can meet the corresponding quality requirements, and improve the working efficiency and product quality of welding.

[0022] 2. The fine-tuning structure composed of an adjusting frame, a connecting slider and an adjusting screw can be used to manually fine-tune the weld when a weld deviation occurs during welding, thereby further ensuring the accuracy of the welding head repair position, ensuring that the weld after automatic repair welding is consistent in penetration with the weld weld of the unit's online production welding and has a full appearance, meeting the quality requirements of steel pipe welding.

[0023] 3. The operating structure composed of the pipe transport roller, active rotating roller and passive rotating roller can facilitate the movement of the steel pipe during the steel pipe welding process. Cooperating with the welding structure, it is convenient to realize the automatic internal welding of the spiral welded steel pipe, which is convenient for better synchronous welding. At the same time, the turning structure composed of the turning rack, oil cylinder and rotating base can drive the steel pipe to turn over after the steel pipe welding is completed, thereby realizing convenient material unloading, improving the convenience of steel pipe unloading after welding, and reducing the difficulty of manual operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0025] In the attached picture:

[0026] Figure 1 It is a structural schematic diagram of the utility model;

[0027] Figure 2 It is a structural schematic diagram of the conductive rod of the utility model;

[0028] Figure 3It is a structural schematic diagram of the automatic adjustment welding repair mechanism of the utility model;

[0029] Figure 4 It is a structural schematic diagram of the tube body motion driving mechanism of the utility model;

[0030] Figure 5 It is a structural schematic diagram of the utility model fine-tuning trolley;

[0031] Numbers in the figure: 1, suspended base;

[0032] 2. Automatic adjustment of repair welding mechanism; 201. Track; 202. Welding mobile trolley; 203. Welding arm lifting bracket; 204. Lifting rack; 205. Driving motor; 206. Driving gear; 207. Limiting turntable; 208. Connecting rod; 209. Wire feeding box; 210. Fine adjustment trolley; 211. Conductive rod; 212. Welding head; 213. Control box;

[0033] 2101, adjusting frame; 2102, connecting slider; 2103, adjusting screw;

[0034] 3. Pipe body movement driving mechanism; 301. Pipe transport roller; 302. Active rotating roller; 303. Passive rotating roller; 304. Rotating motor; 305. Bracket; 306. Turning rack; 307. Oil cylinder; 308. Rotating base. DETAILED DESCRIPTION

[0035] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0036] Example: Figure 1-5 As shown, the utility model provides a technical solution, a spiral welded steel pipe internal welding automatic repair welding device, comprising a suspended base 1, an automatic adjustment repair welding mechanism 2 is installed on the side of the suspended base 1, and a pipe body movement driving mechanism 3 is arranged at the bottom of one side of the suspended base 1;

[0037] The automatic adjustment repair welding mechanism 2 includes a track 201, a welding mobile trolley 202, a welding arm lifting bracket 203, a wire feeding box 209, a fine adjustment trolley 210, a conductive rod 211, a welding head 212 and a control box 213;

[0038] The top of the suspended base 1 is symmetrically connected with a track 201, and the top of the track 201 is movably connected with a welding mobile trolley 202. A control box 213 is installed on one side of the top of the welding mobile trolley 202. A touch screen is provided on one side of the control box 213, and a PLC controller is installed inside the control box 213. The track 201 is an electric track, and the welding mobile trolley 202 is driven to move by the track 201, so that the position of the welding mobile trolley 202 can be adjusted through the control elements in the control box 213, so as to facilitate more accurate repair welding. A welding arm lifting bracket 203 is provided on one side of the suspended base 1;

[0039] The bottom of the welding arm lifting bracket 203 is connected to a wire feeding box 209, and the top of the wire feeding box 209 is adjustably connected to the bottom of the welding arm lifting bracket 203 through a fine-tuning trolley 210. A conductive rod 211 is installed on one side of the wire feeding box 209, and the end of the conductive rod 211 is connected to a welding head 212;

[0040] The pipe body movement driving mechanism 3 includes a pipe transport roller 301, an active rotating roller 302, a passive rotating roller 303, a rotating motor 304, a bracket 305, a material turning rack 306, a cylinder 307 and a rotating base 308;

[0041] Two groups of pipe transport rollers 301 are arranged at the bottom of one side of the suspended base 1, and both sides of the pipe transport rollers 301 are supported and installed by roller frames, and the pipe transport rollers 301 are rotatably connected to the roller frames, which is convenient for the installation and rotation of the pipe transport rollers 301, and an active rotating roller 302 is installed at one side of the middle between the two groups of pipe transport rollers 301, and a passive rotating roller 303 is installed at the other side of the middle between the two groups of pipe transport rollers 301, and the active rotating rollers 302 and the passive rotating rollers 303 are located in corresponding positions, and a rotating motor 304 is installed at the edge of the active rotating roller 302, and the active rotating rollers 302 and the passive rotating rollers 303 are both supported and installed by rotating brackets, and the bottoms of the rotating brackets and the rotating motor 304 are both installed on the top of the supporting bottom plate, which is convenient for the rotating motor 304 to drive the active rotating rollers 302 and the passive rotating rollers 303 to rotate;

[0042] A bracket 305 is installed between the active rotating roller 302 and the passive rotating roller 303 and the two sets of pipe transport rollers 301. The top of the bracket 305 is connected to one side of the tipping rack 306. The bottom of the tipping rack 306 is connected to the cylinder 307, and the bottom of the cylinder 307 is connected to the rotating base 308.

[0043] A lifting rack 204 is fixedly installed on one side of the welding arm lifting bracket 203, and a driving motor 205 is fixedly installed on the top of the welding mobile carriage 202. The input end of the driving motor 205 is electrically connected to the output end of the PLC controller, and the output shaft end of the driving motor 205 is connected to a driving gear 206;

[0044] The top of the welding mobile trolley 202 is rotatably connected to connecting rods 208 at positions on both sides of the driving motor 205, and the ends of the connecting rods 208 are rotatably connected to the limit turntable 207 at positions corresponding to the edges of the welding arm lifting bracket 203. Limit rails are set on both sides of the welding arm lifting bracket 203, and the limit turntable 207 is rotatably connected to the outer side of the limit rails. The connecting rod 208 is rotatably connected to the top of the welding mobile trolley 202 through a rotating support, which facilitates the suspended base 1 and the welding mobile trolley 202 to rise and fall and slide along the welding arm lifting bracket 203.

[0045] The fine-tuning trolley 210 specifically includes an adjustment frame 2101, a connecting slider 2102 and an adjustment screw 2103;

[0046] The bottom of the welding arm lifting bracket 203 is connected to an adjustment frame 2101, and the inner side of the adjustment frame 2101 is embedded with a connecting slider 2102 for sliding connection. The interior of the connecting slider 2102 is threadedly connected to an adjusting screw 2103, and the adjusting screw 2103 is rotatably connected to the inside of both sides of the adjustment frame 2101 through a bearing seat.

[0047] Working principle and use process of the utility model: In the actual working process of the automatic internal welding device for spiral welded steel pipe, the steel pipe to be repaired is first transported to the top of the active rotating roller 302 and the passive rotating roller 303 by using the pipe transport roller 301, and then the pipe body is lifted between the active rotating roller 302 and the passive rotating roller 303, and the specification parameters of the steel pipe are manually input into the touch screen at the side of the control box 213, and the specification parameters of the steel pipe are transmitted to the PLC controller through the touch screen for data calculation;

[0048] Next, the PLC controller controls the start of the driving motor 205, and the track 201 cooperates with the adjustment structure composed of the welding arm lifting bracket 203, the lifting rack 204, the driving motor 205 and the driving gear 206 to adjust the position of the welding mobile carriage 202 in different directions, so as to facilitate the flexible adjustment of the repair welding position of the wire feeding box 209, the conductive rod 211 and the welding head 212, so that the welding head 212 can be aligned with the defective part of the weld in the pipeline, so as to achieve more accurate repair welding of the inner wall of the steel pipe;

[0049] Next, the rotating motor 304 is started, and the active rotating roller 302 and the passive rotating roller 303 can drive the steel pipe to move during the steel pipe welding process. At the same time, the welding mobile trolley 202 is controlled by the PLC controller to move along the track 201, so that the welding mobile trolley 202 and the active rotating roller 302 and the passive rotating roller 303 run synchronously, thereby realizing automatic repair welding during the operation of the steel pipe.

[0050] When the weld seam deviation occurs during the welding process, the fine-tuning structure composed of the adjusting frame 2101, the connecting slider 2102 and the adjusting screw 2103 can be used to manually fine-tune the position between the welding head 212 and the weld seam when there is a deviation, so as to further ensure the accuracy of the welding position of the welding head 212, and ensure that the weld bead after automatic welding is consistent with the weld bead of the unit's online production welding in terms of penetration depth and full appearance;

[0051] Finally, after welding is completed, the trolley returns to the starting point, and the steel pipe reaches the pipe transport track of the pipe transport roller 301. Then, by starting the oil cylinder 307, cooperating with the turning rack 306 and the rotating base 308, it is convenient to drive the steel pipe to turn over after the steel pipe repair welding is completed, thereby realizing convenient unloading processing and improving the convenience of unloading the steel pipe after welding.

[0052] Finally, it should be noted that the above description is only a preferred example of the present utility model and is not intended to limit the present utility model. Although the present utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. An automatic internal welding device for spiral welded steel pipes, comprising a suspended base (1), characterized in that: An automatic adjustment welding mechanism (2) is installed on the side of the suspended base (1), and a tube body movement driving mechanism (3) is provided on the bottom of one side of the suspended base (1); The automatic adjustment repair welding mechanism (2) comprises a track (201), a welding mobile trolley (202), a welding arm lifting bracket (203), a wire feeding box (209), a fine adjustment trolley (210), a conductive rod (211), a welding head (212) and a control box (213); The top of the suspended base (1) is symmetrically connected to a track (201), the top of the track (201) is movably connected to a welding mobile trolley (202), a control box (213) is installed on one side of the top of the welding mobile trolley (202), and a welding arm lifting bracket (203) is provided on one side of the suspended base (1); The bottom of the welding arm lifting bracket (203) is connected to a wire feeding box (209), and the top of the wire feeding box (209) is adjustably connected to the bottom of the welding arm lifting bracket (203) through a fine-tuning trolley (210), and a conductive rod (211) is installed on one side of the wire feeding box (209), and the end of the conductive rod (211) is connected to a welding head (212); The pipe body movement driving mechanism (3) comprises a pipe transport roller (301), an active rotating roller (302), a passive rotating roller (303), a rotating motor (304), a bracket (305), a material turning rack (306), an oil cylinder (307) and a rotating base (308); Two groups of pipe transport rollers (301) are arranged at the bottom of one side of the suspended base (1), an active rotating roller (302) is installed at one side of the middle between the two groups of pipe transport rollers (301), and a passive rotating roller (303) is installed at the other side of the middle between the two groups of pipe transport rollers (301), the active rotating roller (302) and the passive rotating roller (303) are located in corresponding positions, and a rotating motor (304) is installed at the edge of the active rotating roller (302); A bracket (305) is installed between the active rotating roller (302) and the passive rotating roller (303) and the two sets of pipe transport rollers (301); the top of the bracket (305) is connected to one side of the material tipping rack (306); the bottom of the material tipping rack (306) is connected to an oil cylinder (307); and the bottom of the oil cylinder (307) is connected to a rotating base (308).

2. The automatic internal welding repair device for spiral welded steel pipe according to claim 1 is characterized in that: A touch screen is provided on one side of the control box (213), and a PLC controller is installed inside the control box (213). The track (201) is an electric track, and the welding mobile carriage (202) is driven to move by the track (201).

3. The automatic internal welding repair device for spiral welded steel pipe according to claim 2 is characterized in that: A lifting rack (204) is fixedly installed on one side end of the welding arm lifting bracket (203), a driving motor (205) is fixedly installed on the top of the welding mobile trolley (202), the input end of the driving motor (205) is electrically connected to the output end of the PLC controller, and the output shaft end of the driving motor (205) is connected to a driving gear (206); The top of the welding mobile trolley (202) is rotatably connected to connecting rods (208) at positions on both sides of the driving motor (205), and the ends of the connecting rods (208) are rotatably connected to the limit turntable (207) at positions corresponding to the edges of the welding arm lifting bracket (203).

4. The automatic internal welding repair device for spiral welded steel pipe according to claim 3 is characterized in that: Limit rails are arranged on both side edges of the welding arm lifting bracket (203), and the limit turntable (207) is limit-rotatably connected to the outer side of the limit rails, and the connecting rod (208) is rotatably connected to the top of the welding mobile trolley (202) via a rotating support.

5. The automatic internal welding repair device for spiral welded steel pipe according to claim 1 is characterized in that: The fine-tuning trolley (210) specifically comprises an adjustment frame (2101), a connecting slider (2102) and an adjustment screw (2103); The bottom of the welding arm lifting bracket (203) is connected to an adjustment frame (2101), the inner side of the adjustment frame (2101) is embedded with a connecting slider (2102) for sliding connection, the interior of the connecting slider (2102) is connected to an adjusting screw (2103) through a thread, and the adjusting screw (2103) is rotatably connected to the inside of both sides of the adjustment frame (2101) through a bearing seat.

6. The automatic internal welding repair device for spiral welded steel pipe according to claim 1 is characterized in that: Both sides of the pipe transport roller conveyor (301) are supported and installed by roller frames, and the pipe transport roller conveyor (301) and the roller frames are rotatably connected; The active rotating roller (302) and the passive rotating roller (303) are both supported and installed by a rotating bracket, and the bottom of the rotating bracket and the rotating motor (304) are both installed on the top of the supporting bottom plate.

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