Welding device for large-diameter water diversion pipeline and using method

Abstract

The invention relates to the technical field of pipeline welding, in particular to a welding device for a large-diameter water diversion pipeline and a using method.The device comprises a deviation detection mechanism and a supporting and adjusting mechanism used for adjusting the angle and the position of a steering pipe, the deviation detection mechanism comprises two sets of suites, and the two sets of suites are arranged at the butt joint ends of a fixing pipe and the steering pipe correspondingly; each external member comprises an inner hoop on the inner side and an outer hoop on the outer side, the inner hoops can be fixed to the pipeline, sliding grooves are formed in the outer sides of the inner hoops, the outer hoops are rotationally arranged on the outer sides of the inner hoops, connecting blocks are fixedly connected to the top ends of the outer hoops, heavy objects are hung on the hanging rings, and the connecting blocks on the two sides are both located at the highest point of the butt joint end of the pipeline. In the using process, the steering tube can be effectively supported and controlled through the supporting and adjusting mechanism, deviation can be concentrated at one point through the deviation detection mechanism to be reflected, large-range deviation finding is avoided, the deviation can be amplified, and position adjustment in the early stage of welding is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline welding, and in particular to a welding device for a large-diameter water diversion pipeline and a use method thereof. Background Art

[0002] like Figure 1 As shown, the fixed tube 1 is a pipe with a fixed front end. During the process of pipe steering, the steering tube 2 needs to be welded. Before welding, it is necessary to ensure that the fixed tube 1 is aligned with the steering tube 2 and that there is a normal and uniform gap L between the two welding surfaces. When the gap L is uneven, the quality of welding will be seriously affected.

[0003] At present, when the above-mentioned pipelines are docked, the following problems exist: first, the steering tube 2 is a curved tube, and the steering tube 2 has irregularities due to its bending. In the prior art, it is difficult to effectively support, control and move the steering tube 2 during the docking process; second, because the pipeline is a large-diameter water diversion pipeline, the docking surface is relatively wide. When docking large-diameter pipelines, there is a challenge in the accuracy of the docking. Some minor deviations will become difficult to detect when the docking surface is relatively wide.

[0004] Therefore, in view of the above problems, a welding device and a method for using a large diameter water diversion pipeline are proposed. Summary of the invention

[0005] The object of the present invention is to provide a welding device for a large-diameter water diversion pipe and a method of use. The welding device includes a support adjustment mechanism and a deviation detection mechanism. The support adjustment mechanism can effectively support and control the steering tube. The deviation detection mechanism can concentrate the deviation at one point to avoid large-scale deviation finding, and can amplify the deviation to facilitate position adjustment in the early stage of welding, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a welding device for a large-diameter water diversion pipeline, comprising a deviation detection mechanism and a support adjustment mechanism for adjusting the angle and position of a steering tube, the deviation detection mechanism comprising two sets of kits, the two sets of kits being respectively arranged at the butt ends of a fixed tube and a steering tube, each kit comprising an inner hoop on the inside and an outer hoop on the outside, the inner hoop being capable of being fixed on the pipeline, a slide groove being arranged on the outside of the inner hoop, the outer hoop being rotatably arranged on the outside of the inner hoop, a connecting block being fixedly connected to the top end of the outer hoop, a lifting ring being fixedly connected to the bottom end of the outer hoop, the arc center angle between the lifting ring and the connecting block being 180°, and a heavy object being hung on the lifting ring so that the connecting blocks on both sides are at the highest point position of the butt end of the pipeline.

[0007] The present invention can also spirally connect a screw rod inside the outer clamp, hang a heavy object on the lifting ring, make the connecting blocks on both sides be at the highest point position of the pipe butt end, and then realize the relative fixation between the outer clamp and the inner clamp by rotating the screw rod inside the outer clamp.

[0008] A push rod is spirally connected to the inner side of the connection block on the fixed tube, a rotating ball is rotatably connected to the inner side of the connection block on the steering tube, a conical groove is provided on the side of the rotating ball facing the fixed tube, a laser transmitter is fixedly connected to the inner side of the right end of the rotating ball, a connecting rod is fixedly connected to the top end of the outer hoop on the steering tube, and the projections of the connecting rod and the laser transmitter on the surface of the outer hoop are on a diameter of the outer hoop; The right end of the connecting rod is fixedly connected to a whiteboard, the middle position of the whiteboard is fixedly connected to a marking point, and the bottom end of the rotating ball is fixedly connected to a center of gravity area. In the initial state, due to the existence of the center of gravity area in the rotating ball, the connecting line between the conical groove and the laser emitter is on the central horizontal axis of the rotating ball, and the laser emitted by the laser emitter can irradiate the marking point.

[0009] When the butt ends of the fixed tube and the steering tube are butted together, if and only if the push rod is in complete contact with the center of the inner surface of the conical groove, and the laser line emitted by the laser transmitter shines on the marking point, it indicates that the butt angle and the butt surface are correct. A touch-sensitive sensor can be set at the center of the conical groove to determine whether the push rod is in complete contact with the center of the inner surface of the conical groove; it can also be determined by observation whether the push rod is in complete contact with the center of the inner surface of the conical groove.

[0010] After the connecting blocks on both sides are at the highest point of the butt joint of the pipe, the deviation detection mechanism starts to work. When the butt joint surface between the two welding ends has an angle deviation or a position deviation, the push rod is rotated, and the push rod moves to the right to touch the conical groove. The push rod will support the non-center point of the conical groove. At this time, the rotating ball will deflect, and the rotating ball drives the laser emitter to rotate. With the center of the rotating ball as the fulcrum, the light emitted by the laser emitter will deviate from the mark point on the whiteboard. Because the whiteboard is far away from the fulcrum, the deflection of the rotating ball acts on the laser emitter, which will increase the deviation value of the position of the light emitted by the laser emitter on the whiteboard from the mark point in the center of the whiteboard, thereby amplifying this deviation value, which is convenient for the staff to observe more intuitively, and then adjust it through the support adjustment mechanism according to the direction of the deviation, and finally make the position of the light emitted by the laser emitter on the whiteboard coincide with the mark point, thereby realizing the adjustment of the butt joint angle.

[0011] As a preferred embodiment of the welding device for large diameter water diversion pipes of the present invention, the mandrel is provided with scale lines, and the welding gap L can be calibrated by observing the scale lines on the mandrel and cooperating with the support adjustment mechanism.

[0012] During use of the present invention, the support and control of the steering tube can be effectively achieved through the support adjustment mechanism, and the deviation detection mechanism can concentrate the deviation at one point to avoid large-scale deviation detection, and can amplify the deviation to facilitate position adjustment in the early stage of welding.

[0013] As a preferred welding device for large diameter water diversion pipes of the present invention, the right end of the push rod coincides with the inner side of the right end of the conical groove, and a counterweight area is also provided on the upper left end of the rotating ball for balancing the rotating ball to achieve an initial state of the rotating ball.

[0014] As a preferred welding device for large-diameter water diversion pipes of the present invention, the outer hoop and the inner hoop each include two upper and lower half rings, the connection between the upper and lower half rings of the inner hoop is fixedly connected with a first connecting piece, and the first connecting pieces at the upper and lower positions are detachably connected by bolts, and the connection between the upper and lower half rings of the outer hoop is fixedly connected with a second connecting piece, and the second connecting pieces at the upper and lower positions are detachably connected by bolts, and the second connecting piece can slide in the first connecting piece.

[0015] As a preferred welding device for large diameter water diversion pipelines of the present invention, a clamping hydraulic rod is fixedly connected to the inner side of the inner clamp, and the inner clamp is fixed to the outer side of the pipeline by extending the movable end of the clamping hydraulic rod. When in use, it is necessary to ensure that the two clamping hydraulic rods are extended and retracted synchronously.

[0016] As a preferred welding device for large-diameter water diversion pipelines of the present invention, the support adjustment mechanism includes a base plate, the top end of the base plate is rotatably connected to a rotating plate, the top end of the rotating plate is slidably connected to a movable plate, the top end of the movable plate is fixedly connected to a second hydraulic rod, and the upper movable end of the second hydraulic rod is detachably connected to a support member by a spiral connection. In order to facilitate the removal of the support member after pipeline welding, the support member can be set to a multi-section spiral connection to achieve convenient disassembly, the top end of the support member is rotatably connected to a rotating wheel via a rotating shaft, and the support member can penetrate into the inner side of the steering tube to first achieve point support, and the top end of the movable plate is also rotatably connected to a third hydraulic rod via a hinge, and the top end of the third hydraulic rod is rotatably connected to a clamping member, and the bottom end edge of the steering tube is clamped by the clamping member to achieve support and fixation of the steering tube.

[0017] This fixing method can firmly clamp and fix the steering tube through two points, avoiding the problem of difficult fixing caused by the irregularity of the steering tube in the prior art.

[0018] The support member is tilted to the left in order to move the weight of the steering tube to the right, and is subsequently clamped and fixed again by a clamping member to increase the stability of the steering tube support.

[0019] As a preferred welding device for large-diameter water diversion pipelines of the present invention, the clamping part includes an L-shaped plate, the bottom end of the L-shaped plate is rotatably connected to the top end of the third hydraulic rod, a groove is opened on the inner side of the L-shaped plate, and a clamping block is slidably connected to the inner side of the groove, and the clamping of the bottom end edge of the steering tube is achieved by the clamping block and the inner side of one end of the L-shaped plate, the clamping block and the inner side of one end of the L-shaped plate can be set to an arc shape, which is consistent with the inner and outer edges of the steering tube to increase the contact surface with the inner and outer edges of the steering tube to achieve effective fixation, the inner side of the L-shaped plate is rotatably connected to a screw rod, the screw rod is set in the groove, the outer side of the screw rod is spirally connected to the inner side of the clamping block, and the other end of the screw is fixedly connected to a turntable, the position of the clamping block is adjusted by rotating the turntable, and the up and down angles of the steering tube are adjusted by telescoping the third hydraulic rod.

[0020] As a preferred welding device for large-diameter water diversion pipes of the present invention, a leveling piece is fixedly connected to the bottom end of the base plate, a motor is fixedly connected to the inner side of the bottom end of the base plate, the main shaft end of the motor is fixedly connected to the bottom end of the rotating plate, and the front and rear angles of the steering tube are adjusted by the rotation of the motor.

[0021] Under the above settings, the leveling member in the present invention is a prior art, and its structure is a screw lifting mechanism, which is used to achieve the levelness of the bottom plate and the height adjustment within a certain range, and no unnecessary elaboration is made here.

[0022] As a preferred welding device for large-diameter water diversion pipes of the present invention, a limiting groove is provided on the inner side of the left end of the rotating plate, and a sliding plate is slidably connected to the inner side of the limiting groove. A first electric push rod is fixedly connected to the right end of the sliding plate, and the movable end of the first electric push rod is fixedly connected to the left end of the movable plate, and the position adjustment of the steering tube in the left and right directions is achieved through the first electric push rod. A second electric push rod is fixedly connected to the inner side of the front end of the rotating plate, and the movable end of the second electric push rod is fixedly connected to the front end of the movable plate, and the position adjustment of the steering tube in the front and rear directions is achieved through the second electric push rod.

[0023] The method for using the welding device for a large diameter water diversion pipeline comprises the following steps: Step 1: With the help of lifting equipment, place the steering tube on the support adjustment mechanism. The support member goes deep into the inner side of the steering tube to first realize point support. The clamping member clamps the bottom edge of the steering tube to realize the support and fixation of the steering tube. The lifting equipment can be a temporary simple gantry, and the lifting is realized by a hand winch. Step 2: Install the inner clamp and the outer clamp on the two butt ends of the pipe respectively, hang a heavy object on the lifting ring, and make the connection blocks on both sides be at the highest point of the butt ends of the pipe; Step 3: Continuously adjust the angle and position of the steering tube through the support adjustment mechanism. When and only when the push rod is completely in contact with the center of the inner surface of the conical groove, and the laser line emitted by the laser transmitter shines on the marked point, it indicates that the docking angle and docking surface are correct; Step 4: There are scale lines on the mandrel. By observing the scale lines on the mandrel and cooperating with the support adjustment mechanism, the welding gap L can be calibrated; Step 5: After step 3 and step 4 are completed, the pipeline is welded. After welding is completed, the support adjustment mechanism and the deviation detection mechanism are removed.

[0024] Compared with the prior art, the present invention has the following beneficial effects: 1. The welding device for large-diameter water diversion pipeline, after the connecting blocks on both sides are at the highest point position of the pipeline butt end, the deviation detection mechanism starts to work. When the butt surface between the two welding ends has an angle deviation or a position deviation, the push rod is rotated, and the push rod moves to the right to touch the conical groove. The push rod will support the non-center point of the conical groove. At this time, the rotating ball will deflect, and the rotating ball drives the laser transmitter to rotate. With the center of the rotating ball as the fulcrum, the light emitted by the laser transmitter will deviate from the mark point on the whiteboard. Because the whiteboard is far away from the fulcrum, the deflection of the rotating ball acts on the laser transmitter, which will increase the deviation value of the position of the light emitted by the laser transmitter on the whiteboard from the mark point in the center of the whiteboard, thereby amplifying this deviation value, which is convenient for the staff to observe more intuitively, and then adjust through the support adjustment mechanism according to the direction of the deviation, and finally make the position of the light emitted by the laser transmitter on the whiteboard coincide with the mark point, thereby realizing the adjustment of the butt angle.

[0025] 2. The welding device for large-diameter water diversion pipes is provided with scale lines on the push rod. The welding gap L can be calibrated by observing the scale lines on the push rod and cooperating with the support adjustment mechanism. During the use of the present invention, the support and control of the steering tube can be effectively achieved through the support adjustment mechanism. The deviation detection mechanism can concentrate the deviation at one point to avoid large-scale deviation, and can amplify the deviation, which is convenient for position adjustment in the early stage of welding.

[0026] 3. The welding device for large-diameter water diversion pipeline has an upper movable end of the second hydraulic rod which is detachably connected to a support member by means of a spiral connection. In order to facilitate the removal of the support member after pipeline welding, the support member can be set to a multi-section spiral connection to achieve convenient disassembly. The top end of the support member is rotatably connected to a rotating wheel by means of a rotating shaft. The support member can penetrate into the inner side of the steering tube to first achieve point support. The top end of the movable plate is also rotatably connected to a third hydraulic rod by means of a hinge. The top end of the third hydraulic rod is rotatably connected to a clamping member. The bottom end edge of the steering tube is clamped by the clamping member to achieve support and fixation of the steering tube. This fixing method can firmly clamp and fix the steering tube by two points, thus avoiding the problem of difficult fixation caused by the irregularity of the steering tube in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the existing butt welding of the fixed tube and the steering tube; Figure 2 It is a schematic diagram of the overall cross-sectional installation structure of the present invention; Figure 3 This is a schematic diagram of the appearance structure of the support adjustment mechanism of the present invention; Figure 4 For the present invention Figure 2 A schematic diagram of the structure at A; Figure 5 For the present invention Figure 2 Schematic diagram of the structure at B; Figure 6 For the present invention Figure 2 Schematic diagram of the structure at C; Figure 7 This is a schematic diagram of the appearance structure of the ball turning part of the present invention; Figure 8 It is a schematic diagram of the overall appearance structure of the inner hoop and the outer hoop of the present invention; Fig. 9 It is a schematic diagram of the appearance structure when the inner clamp and the outer clamp of the present invention are separated; Fig.10 This is a schematic diagram of the installation structure of the clamping hydraulic rod of the present invention; Fig.11 It is a schematic diagram of the installation structure of the motor of the present invention.

[0028] In the figure: 1. Fixed tube; 2. Steering tube; 3. Deviation detection mechanism; 31. Inner hoop; 32. Outer hoop; 33. Lifting ring; 34. Connecting rod; 35. Whiteboard; 36. Marking point; 37. Push rod; 38. Turning ball; 39. Counterweight area; 310. Center of gravity area; 311. Laser transmitter; 312. Conical groove; 313. First connecting piece; 314. Second connecting piece; 315. Pressing hydraulic rod; 316. Connecting block; 4. Support adjustment mechanism; 41. Bottom plate; 42. Leveling member; 43. Motor; 44. Rotating plate; 45. Slide plate; 46. First electric push rod; 47. Second hydraulic rod; 48. Support member; 49. Rotating wheel; 410. Third hydraulic rod; 411. Movable plate; 412. Second electric push rod; 413. Turntable; 414. Clamping block; 415. L-shaped plate; 416. Screw. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Example 1, please refer to Figure 1-Figure 2 , Figure 4-Figure 5 and Figure 7-Figure 10 , the present invention provides a technical solution: A welding device for a large-diameter water diversion pipeline, comprising a deviation detection mechanism 3 and a support adjustment mechanism 4 for adjusting the angle and position of a steering tube 2, wherein the deviation detection mechanism 3 comprises two sets of kits, which are respectively arranged at the butt ends of a fixed tube 1 and a steering tube 2, each of which comprises an inner hoop 31 on the inner side and an outer hoop 32 on the outer side, wherein the inner hoop 31 can be fixed on the pipeline, a slide groove is arranged on the outer side of the inner hoop 31, and the outer hoop 32 is rotatably arranged on the outer side of the inner hoop 31, a connecting block 316 is fixedly connected to the top end of the outer hoop 32, and a lifting ring 33 is fixedly connected to the bottom end of the outer hoop 32, wherein the arc center angle between the lifting ring 33 and the connecting block 316 is 180°, and a heavy object is hung on the lifting ring 33 so that the connecting blocks 316 on both sides are at the highest point position of the butt end of the pipeline; The present invention can also spirally connect a screw rod inside the outer clamp 32, hang a heavy object on the lifting ring 33, make the connecting blocks 316 on both sides be at the highest point of the pipe butt end, and then realize the relative fixation between the outer clamp 32 and the inner clamp 31 by rotating the screw rod inside the outer clamp 32.

[0031] A push rod 37 is spirally connected to the inner side of the connection block 316 on the fixed tube 1, and a rotating ball 38 is rotatably connected to the inner side of the connection block 316 on the steering tube 2. A conical groove 312 is provided on the side of the rotating ball 38 facing the fixed tube 1, and a laser emitter 311 is fixedly connected to the inner side of the right end of the rotating ball 38. A connecting rod 34 is fixedly connected to the top end of the outer clamp 32 on the steering tube 2, and the projections of the connecting rod 34 and the laser emitter 311 on the surface of the outer clamp 32 are located on a diameter of the outer clamp 32; The right end of the connecting rod 34 is fixedly connected to a whiteboard 35, the middle position of the whiteboard 35 is fixedly connected to a marking point 36, and the bottom end of the rotating ball 38 is fixedly connected to a center of gravity area 310. In the initial state, due to the existence of the center of gravity area 310 in the rotating ball 38, the connecting line of the conical groove 312 and the laser emitter 311 is on the central horizontal axis of the rotating ball 38, and the laser emitted by the laser emitter 311 can irradiate the marking point 36; When the butt ends of the fixed tube 1 and the steering tube 2 are butt-jointed, if and only if the push rod 37 is in full contact with the center of the inner surface of the conical groove 312 and the laser line emitted by the laser emitter 311 is irradiated on the marking point 36, it indicates that the butt-jointed angle and butt-jointed surface are correct; After the connection blocks 316 on both sides are at the highest point of the pipe butt joint, the deviation detection mechanism 3 starts to work. When the butt joint surface between the two welding ends has an angle deviation or a position deviation, the push rod 37 is rotated, and the push rod 37 moves to the right to touch the conical groove 312. The push rod 37 will support the non-center point of the conical groove 312. At this time, the rotating ball 38 will deflect, and the rotating ball 38 drives the laser emitter 311 to rotate. With the center of the rotating ball 38 as the fulcrum, the light emitted by the laser emitter 311 will deviate from the marking point 36 on the whiteboard 35. Because the whiteboard 35 is far from the fulcrum, the deflection of the rotating ball 38 acts on the laser emitter 311, which increases the deviation value of the position of the light emitted by the laser emitter 311 on the whiteboard 35 from the marking point 36 at the center of the whiteboard 35, thereby amplifying the deviation value, which is convenient for the staff to observe more intuitively, and then according to the direction of the deviation, multiple verifications and adjustments are performed through the support adjustment mechanism 4, and finally the position of the light emitted by the laser emitter 311 on the whiteboard 35 coincides with the marking point 36, thereby achieving the adjustment of the docking angle; As a preferred embodiment of the welding device for large diameter water diversion pipes of the present invention, the mandrel 37 is provided with scale lines, and the welding gap L can be calibrated by observing the scale lines on the mandrel 37 and cooperating with the support adjustment mechanism 4.

[0032] During use of the present invention, the support and control of the steering tube can be effectively realized through the support adjustment mechanism, and the deviation detection mechanism can concentrate the deviation at one point to avoid large-scale deviation finding, and can amplify the deviation, which is convenient for position adjustment in the early stage of welding; As a preferred welding device for large diameter water diversion pipes of the present invention, the right end of the top rod 37 coincides with the inner side of the right end of the conical groove 312, and a counterweight area 39 is also provided on the upper left end of the rotating ball 38 for balancing the rotating ball 38 to achieve the initial state of the rotating ball 38.

[0033] As a preferred welding device for large-diameter water diversion pipes of the present invention, the outer hoop 32 and the inner hoop 31 each include two upper and lower half rings, the connection between the upper and lower half rings of the inner hoop 31 is fixedly connected with a first connecting piece 313, and the first connecting pieces 313 at the upper and lower positions are detachably connected by bolts, and the connection between the upper and lower half rings of the outer hoop 32 is fixedly connected with a second connecting piece 314, and the second connecting pieces 314 at the upper and lower positions are detachably connected by bolts, and the second connecting piece 314 can slide in the first connecting piece 313.

[0034] As a preferred welding device for large-diameter water diversion pipelines of the present invention, a clamping hydraulic rod 315 is fixedly connected to the inner side of the inner clamp 31, and the inner clamp 31 is fixed to the outer side of the pipeline by extending the movable end of the clamping hydraulic rod 315. When in use, it is necessary to ensure that the two clamping hydraulic rods 315 are extended and retracted synchronously.

[0035] Example 2: This example is a further improvement of Example 1. The same parts will not be repeated here. Please refer to Figure 1-Figure 11 The support adjustment mechanism 4 includes a bottom plate 41, the top end of the bottom plate 41 is rotatably connected to a rotating plate 44, the top end of the rotating plate 44 is slidably connected to a movable plate 411, the top end of the movable plate 411 is fixedly connected to a second hydraulic rod 47, and the upper movable end of the second hydraulic rod 47 is detachably connected to a support member 48 by a spiral connection. In order to facilitate the removal of the support member 48 after pipeline welding, the support member 48 can be set to a multi-section spiral connection mode to achieve convenient disassembly, and the top end of the support member 48 is rotatably connected to a rotating wheel 49 through a rotating shaft. The support member 48 can penetrate into the inner side of the steering tube 2 to first realize point support, and the top end of the movable plate 411 is also rotatably connected to a third hydraulic rod 410 through a hinge, and the top end of the third hydraulic rod 410 is rotatably connected to a clamping member, and the bottom end edge of the steering tube 2 is clamped by the clamping member to realize the support and fixation of the steering tube 2.

[0036] This fixing method can firmly clamp and fix the steering tube 2 at two points, thus avoiding the problem of difficult fixing caused by the irregularity of the steering tube 2 in the prior art.

[0037] The support member 48 is tilted to the left in order to move the weight of the steering tube 2 to the right, and is subsequently clamped and fixed again by a clamping member to increase the stability of the support for the steering tube 2; As a preferred welding device for large-diameter water diversion pipelines of the present invention, the clamping member includes an L-shaped plate 415, the bottom end of the L-shaped plate 415 is rotatably connected to the top end of the third hydraulic rod 410, a groove is provided on the inner side of the L-shaped plate 415, and a clamping block 414 is slidably connected to the inner side of the groove, and the bottom end edge of the steering tube 2 is clamped by the clamping block 414 and the inner side of one end of the L-shaped plate 415. The clamping block 414 and the inner side of one end of the L-shaped plate 415 can be set to an arc shape, which is consistent with the inner and outer edges of the steering tube 2 to increase the contact surface with the inner and outer edges of the steering tube 2 to achieve effective fixation, and the inner side of the L-shaped plate 415 is rotatably connected to a screw rod 416, which is set in the groove, and the outer side of the screw rod 416 is spirally connected to the inner side of the clamping block 414, and the other end of the screw rod 416 is fixedly connected to a turntable 413, and the position of the clamping block 414 is adjusted by rotating the turntable 413, and the angle of the steering tube 2 in the up and down directions is adjusted by telescoping the third hydraulic rod 410.

[0038] As a preferred welding device for large-diameter water diversion pipes of the present invention, a leveling piece 42 is fixedly connected to the bottom end of the base plate 41, a motor 43 is fixedly connected to the inner side of the bottom end of the base plate 41, and the main shaft end of the motor 43 is fixedly connected to the bottom end of the rotating plate 44, so that the front and rear angles of the steering tube 2 can be adjusted by rotating the motor 43.

[0039] Under the above settings, the leveling member 42 in the present invention is a prior art, and its structure is a screw lifting mechanism, which is used to achieve the levelness of the bottom plate 41 and the height adjustment within a certain range, and no unnecessary elaboration is made here.

[0040] As a preferred welding device for large-diameter water diversion pipes of the present invention, a limiting groove is provided on the inner side of the left end of the rotating plate 44, and a slide plate 45 is slidably connected to the inner side of the limiting groove. A first electric push rod 46 is fixedly connected to the right end of the slide plate 45, and a movable end of the first electric push rod 46 is fixedly connected to the left end of the movable plate 411, and the position adjustment of the steering tube 2 in the left and right directions is achieved through the first electric push rod 46. A second electric push rod 412 is fixedly connected to the inner side of the front end of the rotating plate 44, and the movable end of the second electric push rod 412 is fixedly connected to the front end of the movable plate 411, and the position adjustment of the steering tube 2 in the front and rear directions is achieved through the second electric push rod 412.

[0041] The present invention also discloses a method for using a welding device for a large-diameter water diversion pipeline, the steps of which are: Step 1: With the help of the lifting equipment, the steering tube 2 is placed on the support adjustment mechanism 4, the support member 48 penetrates into the inner side of the steering tube 2 to first realize point support, and the clamping member clamps the bottom edge of the steering tube 2 to realize the support and fixation of the steering tube 2. The lifting equipment can be a temporary simple gantry, and the lifting is realized by a hand chain hoist; Step 2: Install the inner hoop 31 and the outer hoop 32 on the two butt ends of the pipe respectively, hang a weight on the lifting ring 33, so that the connecting blocks 316 on both sides are at the highest point of the butt ends of the pipe; Step 3: Continuously adjust the angle and position of the steering tube 2 through the support adjustment mechanism 4. When and only when the push rod 37 is completely in contact with the center of the inner surface of the conical groove 312, and the laser line emitted by the laser emitter 311 shines on the marking point 36, it indicates that the docking angle and docking surface are correct; Step 4: There are scale lines on the top rod 37. By observing the scale lines on the top rod 37 and cooperating with the support adjustment mechanism 4, the welding gap L can be calibrated; Step 5: After step 3 and step 4 are completed, the pipeline is welded. After welding is completed, the support adjustment mechanism 4 and the deviation detection mechanism 3 are removed.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A welding device for a large diameter water diversion pipeline, comprising a deviation detection mechanism (3) and a support adjustment mechanism (4) for adjusting the angle and position of a steering tube (2), characterized in that: The deviation detection mechanism (3) comprises two sets of kits, which are respectively arranged at the butt ends of the fixed tube (1) and the steering tube (2), each kit comprising an inner hoop (31) on the inside and an outer hoop (32) on the outside, the inner hoop (31) being capable of being fixed on the pipeline, a slide groove being arranged on the outside of the inner hoop (31), the outer hoop (32) being rotatably arranged on the outside of the inner hoop (31), the top end of the outer hoop (32) being fixedly connected to a connecting block (316), the bottom end of the outer hoop (32) being fixedly connected to a lifting ring (33), the arc center angle between the lifting ring (33) and the connecting block (316) being 180 degrees, and a heavy object being hung on the lifting ring (33) so that the connecting blocks (316) on both sides are located at the highest point of the butt end of the pipeline; A push rod (37) is spirally connected to the inner side of the connection block (316) on the fixed tube (1); a rotating ball (38) is rotatably connected to the inner side of the connection block (316) on the steering tube (2); a conical groove (312) is provided on the side of the rotating ball (38) facing the fixed tube (1); a laser emitter (311) is fixedly connected to the inner side of the right end of the rotating ball (38); a connecting rod (34) is fixedly connected to the top end of the outer hoop (32) on the steering tube (2); and projections of the connecting rod (34) and the laser emitter (311) on the surface of the outer hoop (32) are located on a diameter of the outer hoop (32); The right end of the connecting rod (34) is fixedly connected to a whiteboard (35), the middle position of the whiteboard (35) is fixedly connected to a marking point (36), and the bottom end of the rotating ball (38) is fixedly connected to a center of gravity area (310). In the initial state, due to the existence of the center of gravity area (310) in the rotating ball (38), the connecting line between the conical groove (312) and the laser emitter (311) is located on the central horizontal axis of the rotating ball (38), and the laser emitted by the laser emitter (311) can irradiate the marking point (36); When the butt ends of the fixed tube (1) and the steering tube (2) are butt-jointed, the butt-jointing angle and butt-jointing surface are correct when and only when the push rod (37) is completely in contact with the center of the inner surface of the conical groove (312) and the laser line emitted by the laser emitter (311) is irradiated on the marking point (36).

2. The welding device for large diameter water diversion pipeline according to claim 1, characterized in that: The push rod (37) is provided with scale lines, and the welding gap L can be calibrated by observing the scale lines on the push rod (37) and cooperating with the support adjustment mechanism (4).

3. The welding device for large diameter water diversion pipeline according to claim 2, characterized in that: The right end of the push rod (37) coincides with the inner side of the right end of the conical groove (312), and a counterweight area (39) is also provided at the upper left end of the rotating ball (38) for balancing the rotating ball (38) to achieve an initial state of the rotating ball (38).

4. The welding device for large diameter water diversion pipeline according to claim 3 is characterized in that: The outer hoop (32) and the inner hoop (31) both comprise an upper and lower half ring; the connection between the upper and lower half rings of the inner hoop (31) is fixedly connected to a first connection piece (313); the first connection pieces (313) at the upper and lower positions are detachably connected by bolts; the connection between the upper and lower half rings of the outer hoop (32) is fixedly connected to a second connection piece (314); the second connection pieces (314) at the upper and lower positions are detachably connected by bolts; and the second connection piece (314) can slide inside the first connection piece (313).

5. The welding device for large diameter water diversion pipeline according to claim 4, characterized in that: A clamping hydraulic rod (315) is fixedly connected to the inner side of the inner clamp (31), and the inner clamp (31) is fixed to the outer side of the pipeline by extending the movable end of the clamping hydraulic rod (315).

6. The welding device for a large diameter water diversion pipeline according to any one of claims 1 to 5, characterized in that: The support adjustment mechanism (4) comprises a bottom plate (41), the top end of the bottom plate (41) is rotatably connected to a rotating plate (44), the top end of the rotating plate (44) is slidably connected to a movable plate (411), the top end of the movable plate (411) is fixedly connected to a second hydraulic rod (47), the upper movable end of the second hydraulic rod (47) is detachably connected to a support member (48) by means of a screw connection, the top end of the support member (48) is rotatably connected to a rotating wheel (49) via a rotating shaft, the support member (48) can penetrate into the inner side of the steering tube (2) to first realize point support, the top end of the movable plate (411) is also rotatably connected to a third hydraulic rod (410) via a hinge, the top end of the third hydraulic rod (410) is rotatably connected to a clamping member, and the bottom end edge of the steering tube (2) is clamped by the clamping member to realize support and fixation of the steering tube (2).

7. The welding device for large diameter water diversion pipeline according to claim 6, characterized in that: The clamping member comprises an L-shaped plate (415), the bottom end of the L-shaped plate (415) being rotatably connected to the top end of the third hydraulic rod (410), a groove being provided on the inner side of the L-shaped plate (415), a clamping block (414) being slidably connected to the inner side of the groove, the bottom edge of the steering tube (2) being clamped by the clamping block (414) and the inner side of one end of the L-shaped plate (415), a screw rod (416) being rotatably connected to the inner side of the L-shaped plate (415), the screw rod (416) being arranged in the groove, the outer side of the screw rod (416) being spirally connected to the inner side of the clamping block (414), the other end of the screw rod (416) being fixedly connected to a rotating disk (413), the position of the clamping block (414) being adjusted by rotating the rotating disk (413), and the vertical angle of the steering tube (2) being adjusted by telescoping the third hydraulic rod (410).

8. The welding device for large diameter water diversion pipeline according to claim 7, characterized in that: A leveling member (42) is fixedly connected to the bottom end of the bottom plate (41), a motor (43) is fixedly connected to the inner side of the bottom end of the bottom plate (41), a main shaft end of the motor (43) is fixedly connected to the bottom end of the rotating plate (44), and the front-rear angle of the steering tube (2) is adjusted by the rotation of the motor (43).

9. The welding device for large diameter water diversion pipeline according to claim 8, characterized in that: A limiting groove is provided on the inner side of the left end of the rotating plate (44), and a slide plate (45) is slidably connected to the inner side of the limiting groove. A first electric push rod (46) is fixedly connected to the right end of the slide plate (45), and a movable end of the first electric push rod (46) is fixedly connected to the left end of the movable plate (411). The position adjustment of the steering tube (2) in the left-right direction is achieved through the first electric push rod (46). A second electric push rod (412) is fixedly connected to the inner side of the front end of the rotating plate (44), and a movable end of the second electric push rod (412) is fixedly connected to the front end of the movable plate (411). The position adjustment of the steering tube (2) in the front-back direction is achieved through the second electric push rod (412).

10. The method for using the welding device for a large diameter water diversion pipeline according to claim 9, characterized in that: The steps are: Step 1: With the help of a lifting device, the steering tube (2) is placed on the support adjustment mechanism (4), the support member (48) penetrates into the inner side of the steering tube (2) to first realize point support, and the clamping member clamps the bottom edge of the steering tube (2) to realize support and fixation of the steering tube (2); Step 2: Install the inner clamp (31) and the outer clamp (32) on the two butt ends of the pipe respectively, and hang a heavy object on the lifting ring (33) so that the connecting blocks (316) on both sides are at the highest point of the butt ends of the pipe; Step 3: Continuously adjust the angle and position of the steering tube (2) through the support adjustment mechanism (4). When and only when the push rod (37) is completely in contact with the center of the inner surface of the conical groove (312), and the laser line emitted by the laser emitter (311) shines on the marking point (36), it indicates that the docking angle and docking surface are correct; Step 4: The push rod (37) is provided with scale lines, and the welding gap L can be calibrated by observing the scale lines on the push rod (37) and cooperating with the support adjustment mechanism (4); Step 5: After step 3 and step 4 are completed, the pipeline is welded. After welding is completed, the support adjustment mechanism (4) and the deviation detection mechanism (3) are removed.

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