Pipeline welding positioning device

Abstract

A pipeline welding positioning device comprises racks and clamping assemblies, the racks and the clamping assemblies are arranged on the two sides of a pipeline in pairs in a mirror image mode, the clamping assemblies are arranged on the inner sides of the racks on the corresponding sides, and the two corresponding racks are detachably and fixedly connected. The rack comprises a bottom frame parallel to the pipeline, a fixed plate and a movable frame are correspondingly arranged on the two sides, perpendicular to the pipeline, of the bottom frame respectively, the fixed plate is perpendicular to the pipeline and fixedly connected with the bottom frame, a first clamping groove corresponding to the pipeline is formed in the side, close to the pipeline, of the fixed plate, and the movable frame is in sliding connection with the bottom frame; and a second clamping groove corresponding to the pipeline is formed in the end close to the pipeline. According to the utility model, the integrated operation of measuring and welding is realized, the positioning precision and accuracy of welding are improved, the waste of resources is reduced, more time and labor are saved, and the efficiency is higher.

Description

TECHNICAL FIELD

[0001] The utility model belongs to welding equipment technical field especially relates to a positioning device for pipeline welding. BACKGROUND

[0002] In the existing filter equipment manufacturing and installation process, piping is a crucial step, which not only involves connecting various pipelines accurately to the equipment, but also involves corresponding connection between various pipelines. The existing pipeline connection mostly uses welding method.

[0003] In the traditional pipeline welding process, due to the lack of efficient positioning tools, the measurement and welding are separated. The specific steps are as follows: first, the basic size is measured manually, then the pipeline is taken off the equipment for welding, and finally the pipeline is put back on the equipment for welding. This welding positioning method has many drawbacks, such as: first, this positioning method is difficult, and multiple personnel are needed to complete the size and angle positioning of the pipeline and the drawing, and the operator needs to adjust and measure manually multiple times. This measurement positioning and welding separation operation method not only increases the labor cost and time cost, but also increases the complexity of communication and coordination, seriously reduces the installation and manufacturing efficiency of the equipment, and cannot meet the high efficiency requirement of modern industrial production; secondly, due to the insufficient accuracy of the existing pipeline measurement technology, it cannot meet the demand of high-precision welding, especially in complex equipment such as aircraft engines, ships and automobiles, measurement errors and welding errors are easily generated, which makes it difficult to ensure the horizontal and vertical of the welded pipeline, affecting the appearance and function of the pipeline; then, due to the superposition of manual measurement error and welding error, the final pipeline made may deviate from the design drawing, affecting the accuracy and reliability of the pipeline, and further causing rework, which easily causes material waste, increases production cost, and affects the overall economic benefit of filter equipment manufacturing and installation; further, for the suspended pipeline piping, if the pipeline installation position is too high, hoisting is needed for disassembly and installation, which greatly increases the installation cost; finally, the existing technology does not have a good clamping and fixing device for the welding between the right-angle pipelines, which brings great inconvenience to the welding positioning between the right-angle pipelines. UTILITARIAN CONTENT

[0004] The utility model aims at providing a positioning device for pipeline welding, to solve the technical problems that the existing pipeline welding mostly uses the measurement and welding separation method, which is difficult to position, easy to produce error, time-consuming and laborious, low in efficiency, high in resource waste rate, and inconvenient for right-angle pipeline welding positioning.

[0005] To achieve the above-mentioned purpose, the specific technical scheme of the utility model is as follows:

[0006] A pipeline welding positioning device, comprising a rack and a clamping assembly, both of which are mirror image pairs arranged on both sides of the pipeline, wherein the clamping assembly is arranged on the inner side of the corresponding rack, and the corresponding two racks are detachably fixedly connected;

[0007] The rack comprises a bottom frame parallel to the pipeline, and corresponding fixed plates and moving frames are arranged on both sides of the pipeline perpendicular to the pipeline, wherein the fixed plate is fixedly connected with the bottom frame and is provided with a first clamping groove corresponding to the pipeline on the side close to the pipeline, and the moving frame is slidably connected with the bottom frame and is provided with a second clamping groove corresponding to the pipeline on the end close to the pipeline.

[0008] The clamping assembly comprises a half ring frame on the inner side of the fixed plate, the half ring frame is provided with a lead screw parallel to the pipeline on the side corresponding to the fixed plate, the fixed plate is provided with a threaded hole corresponding to the lead screw, the outer end of the lead screw is provided with a rotating handle, the inner end of the lead screw is fixedly connected with the half ring frame through the threaded hole, the inner side of the fixed plate is provided with a pair of positioning supports corresponding to the pipeline, both positioning supports are connected with the fixed plate through the adapter rods at the ends, the bottom frame is provided with a pair of guide seats, the guide seats are provided with guide grooves corresponding to the positioning supports, the guide grooves are arranged in an inclined manner with the axis perpendicular to the axis of the pipeline, and the far-pipeline end of the positioning support is inserted into the guide groove.

[0009] Further, the far-pipeline side of the fixed plate is fixedly connected with the corresponding side of the bottom frame, the outer side of the near-pipeline side of the fixed plate is provided with a pair of first connecting seats, each pair of first connecting seats is mirror image corresponding with the first clamping groove as the center, the other side of the bottom frame opposite to the fixed plate is provided with a sliding groove perpendicular to the pipeline, the moving frame is slidably connected with the bottom frame through the sliding groove, the near-pipeline side of the moving frame is provided with a first pipe clamp, the second clamping groove is arranged on the near-pipeline end of the first pipe clamp, the near-pipeline end of the first pipe clamp is provided with a pair of second connecting seats, each pair of second connecting seats is mirror image corresponding with the second clamping groove as the center, the first connecting seat and the second connecting seat are parallel to the bottom frame, and both are provided with U-shaped grooves penetrating up and down.

[0010] Further, the inner side of the half ring frame is provided with a pair of support seats corresponding to the positioning supports, and the two ends of the adapter rod are rotatably connected with the support seats and the positioning supports, respectively.

[0011] Further, the positioning support comprises a pair of top rods parallel to each other, the heights of the two top rods are the same, the guide seats are arranged in pairs on the corresponding sides of the top rods on the corresponding side of the bottom frame, the bottom ends of the top rods are inserted into the guide grooves of the corresponding guide seats, and the two are slidably connected, the side wall on the other side of the top rod opposite to the connecting rod is provided with a connecting block corresponding to the adapter rod, and the positioning support is connected with the adapter rod through the connecting block of the top rod on one side close to the half ring frame.

[0012] Further, the top end of the top rod is provided with a rotatingly connected rolling ball, and a pair of connecting rods are provided corresponding to the parallel sides of the pair of top rods, and the two connecting rods are connected to the two top rods respectively, and the two top rods are detachably fixed and connected together through the two connecting rods.

[0013] Further, the rack is provided with a micro level.

[0014] Further, the pipeline welding positioning device further comprises an angle fixing assembly, which comprises a connecting vertical plate parallel to the fixing plate, and is arranged on the other side of the moving frame opposite to the rack, and a corresponding first guide rail and a first sleeve are arranged between the rack and the connecting vertical plate, and the first guide rail and the first sleeve are parallel to the axis of the first pipe clamp, wherein the inner side end of the first guide rail close to the rack is fixedly connected to the outer side surface of the corresponding side of the bottom frame, the outer side end of the first sleeve is fixedly connected to the inner side surface of the connecting vertical plate, and the outer side end of the first guide rail is inserted into the inner cavity of the first sleeve, and the first guide rail and the first sleeve are slidably connected, and a fixing frame is arranged below the connecting vertical plate, and a corresponding second guide rail and a second sleeve are arranged between the connecting vertical plate and the fixing frame, and the second guide rail and the second sleeve are perpendicular to the first guide rail, wherein one end of the second guide rail corresponding to the second sleeve is inserted into the inner cavity of the second sleeve, and the second guide rail and the second sleeve are slidably connected, the other end of the second guide rail is fixedly connected to the connecting vertical plate, and the other end of the second sleeve is fixedly connected to the fixing frame, a pair of second pipe clamps corresponding to the first pipe clamp are arranged on the inner side of the fixing frame, the outer side end of the second pipe clamp close to the fixing frame is fixedly connected to the fixing frame, a pair of arc-shaped third clamping grooves corresponding to the second clamping grooves are arranged on the inner side surfaces of the proximal ends of the two second pipe clamps, the axis of the third clamping groove is perpendicular to the axis of the second clamping groove, and a pair of third connecting seats with through U-shaped grooves are arranged on the outer sides of the proximal ends of the two second pipe clamps, and the two second pipe clamps can be detachably fixed and connected together through the third connecting seats and external bolts.

[0015] Further, the side walls of the first sleeve and the second sleeve are both provided with positioning holes, corresponding fastening pins are arranged in the positioning holes, external threads are arranged on the side walls of the fastening pins, internal threads corresponding to the external threads of the fastening pins are arranged in the positioning holes, and the positioning holes and the fastening pins are threadedly engaged with each other.

[0016] The pipeline welding positioning device realizes integrated operation of measurement and welding through the cooperation of the rack and the clamping assembly, so that the welding positioning process is more simple, the error generation rate is reduced, the positioning precision of welding is improved, the welding accuracy is further improved, resource waste is reduced, time and labor are saved, the welding efficiency is higher, the production cost is lower, the economic benefit is better, integrated positioning between the two right-angle pipelines is realized, the right-angle pipeline welding efficiency is improved, and the deficiency of the technology is made up. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1It is three-dimensional structure schematic view of embodiment 1 of the utility model;

[0018] Figure 2 It is main view when using embodiment 1 of the utility model;

[0019] Figure 3 It is right view structure schematic view of embodiment 1 of the utility model in Figure 2 ;

[0020] Figure 4 It is rear view of embodiment 1 of the utility model; Figure 3 ;

[0021] Figure 5 It is sectional view of A-A direction of embodiment 1 of the utility model; Figure 4 ;

[0022] Figure 6 It is three-dimensional structure schematic view of embodiment 2 of the utility model;

[0023] Figure 7 It is main view when using embodiment 2 of the utility model;

[0024] Marking in the drawing: 1, rack;11, bottom frame;12, fixed plate;13, moving frame;14, first clamping groove;15, second clamping groove;16, guide seat;17, guide groove;18, first pipe clamp;19, sliding groove;2, clamping assembly;21, half ring frame;22, lead screw;23, support seat;24, adapter rod;25, rotating handle;3, horizontal pipeline;31, vertical pipeline;4, positioning support;41, top rod;42, connecting block;43, rolling ball;5, first connecting seat;51, second connecting seat;52, third connecting seat;6, angle fixing assembly;61, connecting vertical plate;62, first guide rail;63, second guide rail;64, fixed frame;65, second pipe clamp;66, first sleeve;67, second sleeve;68, third clamping groove;7, fastening pin. DETAILED DESCRIPTION

[0025] In order to better understand the purpose, structure and function of the utility model, the following will be further described in detail with the drawings, a pipeline welding positioning device of the utility model.

[0026] Embodiment 1

[0027] As Figures 1-5As shown, the utility model pipeline welding positioning device includes frame 1 and clamping assembly 2, both correspond to each other, and are arranged in pairs on both sides of pipeline, and the two pairs of frame 1 and the two pairs of clamping assembly 2 are mirror image corresponding along the axis of pipeline, wherein the clamping assembly 2 is arranged at the inner side of the corresponding side frame 1, and the two frames 1 are detachably fixedly connected between the corresponding two frames 1, when using, two frames 1 drive two clamping assemblies 2 to half clamping on the pipeline that needs to be welded, adjust the weld that needs to be welded to the middle part of clamping assembly 2, then adjust the butt joint accuracy of weld through clamping assembly 2, after adjusting, can weld the pipeline.

[0028] Frame 1 includes the bottom frame 11 parallel to pipeline, and the both sides of bottom frame 11 are respectively provided with fixed plate 12 and moving frame 13, wherein moving frame 13 is slidably connected on the corresponding side of bottom frame 11, and fixed plate 12 is perpendicular to pipeline and is fixedly connected on the other side of bottom frame 11 opposite to moving frame 13, in the embodiment, pipeline is horizontally arranged, and is referred to as horizontal pipeline 3, frame 1 and clamping assembly 2 are arranged in pairs on the upper and lower sides of horizontal pipeline 3, taking the frame 1 above horizontal pipeline 3 as an example, the left side of bottom frame 11 extends downward to form vertical fixed plate 12, and the bottom end of bottom frame 11 is provided with first clamping groove 14 and first connecting seat 5, wherein the first clamping groove 14 is arc-shaped corresponding to horizontal pipeline 3, and is located in the middle part of the lower side of fixed plate 12, and the first connecting seat 5 is arranged in pairs on the front and back sides of fixed plate 12, and each first connecting seat 5 is fixedly installed on the side bottom end of the corresponding side of fixed plate 12, moving frame 13 is L-shaped, the middle part of the right side of bottom frame 11 is provided with vertical sliding groove 19 corresponding to the vertical rod of moving frame 13, and first pipe clamp 18 is arranged below moving frame 13, and the top end of first pipe clamp 18 is fixedly connected on the bottom surface of horizontal rod, and in the embodiment, the two are integrally formed and fixedly connected, and the bottom of first pipe clamp 18 is provided with arc-shaped second clamping groove 15 corresponding to first clamping groove 14, and the two are not only parallel, but also have the same curvature, and second clamping groove 15 is also arc-shaped corresponding to pipeline, and the front and back sides of first pipe clamp 18 are provided with two pairs of second connecting seats 51 corresponding to each other, and each second connecting seat 51 is fixedly installed on the side bottom end of the corresponding side of first pipe clamp 18, and first connecting seat 5 and second connecting seat 51 are horizontally arranged parallel to bottom frame 11, and the two are provided with U-shaped grooves penetrating up and down, when installing, the two frames 1 clamped on the upper and lower sides of horizontal pipeline 3 are fixedly connected together through the corresponding first connecting seat 5 and second connecting seat 51 by penetrating through external bolts, and the crack is adjusted to the middle part of frame 1, at this time, the two first fixed grooves on the left side of two frames 1 correspond up and down, and the horizontal pipeline 3 on the left side of the crack is clamped by force on the upper and lower ends respectively, and the two second fixed grooves on the right side of two frames 1 correspond up and down, and the horizontal pipeline 3 on the right side of the crack is clamped by force on the upper and lower ends respectively, and then the positioning device is fixed on the horizontal pipeline 3 that needs to be welded.

[0029] The clamping assembly 2 comprises a half ring frame 21 on the inner side of the fixed plate 12, and the half ring frame 21 is provided with a lead screw 22 parallel to the horizontal pipeline 3 on the side corresponding to the fixed plate 12. The half ring frame 21 is connected to the fixed plate 12 through the lead screw 22. The fixed plate 12 is provided with a threaded hole corresponding to the lead screw 22. The inner side end of the lead screw 22 is fixedly connected to the outer side wall of the half ring frame 21 after penetrating through the threaded hole. The top end of the half ring frame 21 is in close contact with the bottom surface of the bottom frame 11, and the two are slidingly connected. The bottom frame 11 plays a guiding role when moving left and right of the half ring frame 21. The right side of the half ring frame 21 is provided with a pair of positioning supports 4 corresponding to the horizontal pipeline 3, and the two positioning supports 4 are mirror image corresponding along the center line of the half ring frame 21. The right side ends of the two are connected to the right side surface of the half ring frame 21 through corresponding adapter rods 24. Taking the positioning support 4 on the front side of the half ring frame 21 as an example, the right side surface of the half ring frame 21 in this embodiment is provided with a support seat 23 corresponding to the positioning support 4. The adapter rod 24 is arranged between the support seat 23 and the positioning support 4. The two ends of the adapter rod 24 are rotatably connected to the support seat 23 and the positioning support 4, respectively. The bottom surface of the bottom frame 11 is provided with a pair of guide seats 16 corresponding to the positioning supports 4. The guide seat 16 is provided with a guide groove 17 corresponding to the positioning support 4. The guide groove 17 is inclinedly arranged, and the axis thereof is perpendicular to the axis of the horizontal pipeline 3. In this embodiment, the inclination direction of the guide groove 17 is inclined along the direction of the 45° angle between the top plate. The end of the positioning support 4 is inserted into the guide groove 17, and the two are slidingly connected. When working, the lead screw 22 is rotated, which can move left and right on the fixed plate 12 through cooperation with the threaded hole, thereby driving the half ring frame 21 to move left and right inside the rack 1. The two half ring frames 21 of the two corresponding clamping assemblies 2 correspond to each other on the upper and lower sides of the horizontal pipeline 3. The bottom surface of the half ring frame 21 on the upper side of the horizontal pipeline 3 abuts against the top surface of the half ring frame 21 on the side of the horizontal pipeline 3, and the two form a rectangular ring frame. The half ring frame 21 applies force to the two positioning supports 4 on the front and rear sides thereof through the adapter rod 24, thereby driving the two positioning supports 4 to move up and down along the corresponding guide grooves 17, thereby realizing the clamping and positioning of the positioning support 4 on the horizontal pipeline 3 and loosening.

[0030] Further, the positioning support 4 comprises a pair of parallel top rods 41 fixedly connected between them and of the same height. In this embodiment, the parallel sides of the two top rods 41 are provided with a pair of corresponding connecting rods, and the two connecting rods are respectively connected to the two top rods 41. The end of the connecting rod is fixedly connected to the bottom end of the side wall on the corresponding side of the top rod 41. The connecting rod is provided with two pairs of corresponding connecting holes. The two connecting rods are fixed together through the corresponding connecting holes and external bolts. The two top rods 41 are fixedly connected through the two connecting rods. The guide seat 16 corresponds to the top rod 41, and is arranged in pairs on the corresponding side of the bottom frame 11. The bottom end of the two top rods 41 is respectively inserted into the guide groove 17 of the corresponding two guide seats 16. The top rod 41 is slidingly connected with the guide seat 16. The guide groove 17 provides a guide function for the sliding of the top rod 41. The top rod 41 is parallel to the half ring frame 21 under the action of the guide groove 17. The side wall of each top rod 41 is provided with a connecting block 42 corresponding to the adapter rod 24. The connecting block 42 is arranged on the upper part of the side wall on the other side of the top rod 41 opposite to the connecting rod. The positioning support 4 is connected with the adapter rod 24 through the connecting block 42 of the top rod 41 on one side of the half ring frame 21. In this embodiment, corresponding bolt holes are arranged on the support seat 23, the connecting rod and the connecting block 42. The connecting rod is rotatably connected with the support seat 23 and the connecting block 42 through the bolt holes and corresponding external bolts. The independent arrangement of the top rod 41 is more convenient for the installation, disassembly and maintenance of the positioning support 4. In use, the top end of the top rod 41 abuts against the side wall of the horizontal pipeline 3. The weld seam strip to be welded is adjusted to between the two top rods 41 of the positioning support 4. The two pairs of top rods 41 corresponding to the two positioning supports 4 on the half ring frame 21 abut against the horizontal pipeline 3 from both sides. Since the included angle between the guide groove 17 and the top plate is 45°, the two pairs of top rods 41 on the half ring frame 21 abut against the horizontal pipeline 3 from both sides, so that the force exerted by the two pairs of top rods 41 on the horizontal pipeline 3 forms an included angle of 90°. In this way, the two groups of clamping assemblies 2 exert force on the side wall of the horizontal pipeline 3 from the corresponding four directions, realizing stable mechanical contact between the positioning device and the horizontal pipeline 3, and making the positioning device more stable on the horizontal pipeline 3 and more accurate in positioning the weld seam.

[0031] Further, the top end of the top rod 41 is provided with a rolling ball 43 rotatably connected between them. The rolling ball 43 can rotate in all directions at the top end of the top rod 41. In work, the top rod 41 abuts against the side wall of the horizontal pipeline 3 through the rolling ball 43. The rotatable function of the rolling ball 43 enables the positioning device to stably move along the side wall of the horizontal pipeline 3. In this way, the positioning device can rotate along the side wall of the horizontal pipeline 3 with the center of the horizontal pipeline 3 as the center when welding the annular weld seam on the horizontal pipeline 3, and the positioning device can move axially along the side wall of the horizontal pipeline 3 when welding multiple weld seams on the horizontal pipeline 3. This saves the time and labor required for repeated disassembly and assembly, and improves the welding efficiency.

[0032] Furthermore, the outer end of the lead screw 22 is provided with a rotating handle 25. When in use, force is applied to the handle to make the lead screw 22 rotate, which saves more effort.

[0033] Furthermore, a miniature level is provided on the frame 1 for leveling when the positioning device is fixedly installed on the horizontal pipe 3, thereby improving the accuracy of weld joint.

[0034] In use, firstly, the corresponding two frames 1 are clamped in half onto the horizontal pipe 3 to be welded using the external bolts of the first connecting seat 5 and the second connecting seat 51. During clamping, it is necessary to adjust the frames 1 so that the weld seam to be welded is between the two top rods 41 of the positioning bracket 4. Then, force is applied to the lead screw 22 by rotating the handle 25 to make it rotate, which in turn pushes the positioning bracket 4 through the semi-ring frame 21, so that the tops of the two positioning brackets 4 are respectively fixed on the horizontal pipe 3 on both sides of the crack. During this process, a miniature level can be used in conjunction with the clamping assembly. The precise leveling of the horizontal pipe 3 by component 2 makes the positioning of the weld more accurate. The moving frame 13 will move up and down along the axis of the horizontal pipe 3 as the positioning bracket 4 needs to position and correct the weld of the two horizontal pipes 3. In this way, the horizontal pipe 3 is fixed and the positioning bracket 4 assists in the docking and correction of the horizontal pipes 3 on both sides of the weld, making the weld docking more accurate. Then, the corresponding welding can be used to weld the weld. When the position of the positioning device needs to be moved, force is applied directly to it in the direction of movement, and it can move axially or radially along the direction of force application.

[0035] This utility model of pipeline welding positioning device achieves precise positioning of the pipeline on both sides of the weld seam through the cooperation of the frame 1 and the clamping assembly 2. It eliminates the need for pipeline disassembly and multiple manual measurements, reduces the cost of multiple hoisting operations, simplifies the multi-person collaborative process, saves more time and labor, improves welding positioning accuracy, and realizes the integration of measurement positioning and welding. This makes the positioning process simpler, reduces human error, improves the efficiency of welding positioning, improves the accuracy of measurement positioning and welding, reduces resource waste, lowers production costs, and improves the overall economic benefits of welding processing.

[0036] Example 2

[0037] like Figures 6-7Based on Embodiment 1, the design is further optimized. The positioning device also includes an angle fixing component 6. The angle fixing component 6 is located on the right side of the frame 1 corresponding to the movable frame 13. It can be used for welding between the horizontal pipe 3 and the vertical pipe 31 that is perpendicular to it at a 90° angle. The angle fixing component 6 includes a connecting vertical plate 61, a first guide rail 62, a second guide rail 63, a fixing frame 64, and a second pipe clamp 65. The connecting vertical plate 61 is located on the right side of the movable frame 13 and is parallel to the fixing plate 12. The first guide rail 62 is parallel to the horizontal pipe 3 and is located between the frame 1 and the connecting vertical plate. In this embodiment, a pair of parallel first guide rails 62 are located above the horizontal pipe 3 between the frame 1 and the connecting vertical plate. The left ends of the two first guide rails 62 are respectively fixedly connected to the corresponding bottom frame 1. On the front and rear sides of the right side, the upper left side of the connecting vertical plate is provided with a pair of first sleeves 66 corresponding to the first guide rail 62. The right end of the first guide rail 62 is inserted into the inner cavity of the corresponding first sleeve 66, and the two are slidably connected. During operation, the first guide rail 62 and the first sleeve 66 cooperate with each other to provide guidance for the horizontal movement of the corner fixing device. The fixing frame 64 is located below the connecting vertical plate, and the second guide rail 63 is located between the fixing frame 64 and the connecting vertical plate. In this embodiment, a pair of parallel and corresponding second guide rails 63 are vertically arranged between the fixing frame 64 and the connecting vertical plate. The upper ends of the two second guide rails 63 are respectively fixedly connected to the front and rear sides of the bottom surface of the connecting vertical plate. The top surface of the fixing frame 64 is provided with a pair of second sleeves 67 corresponding to the two second guide rails 63. The bottom ends of the two sleeves 67 are fixedly connected to the top surface of the fixed frame 64. The lower end of the second guide rail 63 is inserted into the inner cavity of the corresponding second sleeve 67 from the top end. The two are slidably connected. During operation, the second guide rail 63 and the second sleeve 67 cooperate with each other to provide guidance for the vertical movement of the corner fixing device. A pair of corresponding second pipe clamps 65 are provided on the left side of the fixed frame 64 corresponding to the first pipe clamp 18. The two second pipe clamps 65 are mirror images of each other along the center line. A pair of corresponding arc-shaped third clamping grooves 68 are provided on the inner side of the two near ends. The axis of the third clamping groove 68 intersects perpendicularly with the axis of the second clamping groove 15, and the projection of the second pipe clamp 65 is on the right side of the first pipe clamp 18. The outer end of the second pipe clamp 65 near the fixed frame 64 is fixedly connected to the first pipe clamp 18. The vertical pipe 31 is attached to the fixed frame 64. In this embodiment, the two are fixedly connected together by welding. In use, the vertical pipe 31 is clamped in the second pipe clamp 65 by a pair of corresponding third clamping grooves 68. The outer surfaces of the front and rear sides of the two second pipe clamps 65 are provided with two pairs of corresponding third connecting seats 52. The third connecting seats 52 are provided with U-shaped grooves that run through the left and right sides. The corresponding two second pipe clamps 65 can be detachably fixed together by external bolts passing through the U-shaped grooves on the two pairs of third connecting seats 52. In this embodiment, the right end of the horizontal pipe 3 is its welding end. The vertical pipe 31 that needs to be welded to it is located on the lower right side of the horizontal pipe 3. In operation, firstly, the clamping assembly 2 is driven by the frame 1 to clamp the horizontal pipe 3 in half.The welding end of the horizontal pipeline 3 is extended outward from the right side of the first pipe clamp 18, then the second pipe clamp 65 is clamped in place of the vertical pipeline 31, and then the horizontal and vertical positions of the vertical pipeline 31 are adjusted by the cooperation of the first guide rail 62 and the first sleeve 66 and the cooperation of the second guide rail 63 and the second sleeve 67, so that the top end corresponds to the welding end of the horizontal pipeline 3, and after the welding seams of the two correspond, the corresponding welding seams between the horizontal pipeline 3 and the vertical pipeline 31 are welded by using external welding, and then the two are welded together in a 90° right angle bending mode, so that the corner fixing assembly 6 fixes the relative position between the vertical pipeline 31 and the horizontal pipeline 3, and the positioning device realizes the auxiliary clamping of the horizontal pipeline 3 and the vertical pipeline 31 in the welding positioning in the 90° right angle bending mode.

[0038] Further, the side wall of the first sleeve 66 and the second sleeve 67 is provided with a corresponding positioning hole, and a corresponding fastening pin 7 is installed in the positioning hole, the side wall of the fastening pin 7 is provided with a corresponding external thread, the positioning hole is provided with an internal thread corresponding to the external thread of the fastening pin 7, and the positioning hole and the fastening pin 7 are engaged with each other through the threads, wherein the fastening pin 7 provided on the side wall of the first sleeve 66 is a first fastening pin, and the fastening pin 7 provided on the side wall of the second sleeve 67 is a second fastening pin, the first fastening pin can be clamped and fixed by being screwed into the corresponding positioning hole, so as to fix the horizontal position of the vertical pipeline 31 in the second pipe clamp 65, and the second fastening pin can be clamped and fixed by being screwed into the corresponding positioning hole, so as to fix the vertical position of the vertical pipeline 31 in the second pipe clamp 65, and through the cooperation of the first fastening pin and the second fastening pin, the position between the horizontal pipeline 3 and the vertical pipeline 31 can be fixed and will not be easily changed under the action of non-external force, so that the positioning of the two during welding is more accurate and the error is smaller.

[0039] It can be understood that the utility model is described through some embodiments, and those skilled in the art know that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the utility model. In addition, under the guidance of the utility model, these features and embodiments can be modified to adapt to specific conditions and materials without departing from the spirit and scope of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application belong to the scope protected by the utility model.

Claims

1. A tubing welding positioning device, characterized by, It includes rack (1) and clamping assembly (2), both are mirror image pair setting on both sides of pipeline, wherein clamping assembly (2) is arranged in the inner side of corresponding side rack (1), and the corresponding two racks (1) are detachably fixedly connected; The rack (1) includes a bottom frame (11) parallel to the pipeline, a fixed plate (12) and a moving frame (13) are arranged on both sides of the pipeline respectively, wherein the fixed plate (12) is perpendicular to the pipeline, and the fixed plate (12) is fixedly connected with the bottom frame (11), and the side close to the pipeline of the fixed plate (12) is provided with a first clamping groove (14) corresponding to the pipeline, and the moving frame (13) is slidably connected with the bottom frame (11), and the end close to the pipeline of the moving frame (13) is provided with a second clamping groove (15) corresponding to the pipeline. The clamping assembly (2) includes a half ring frame (21) on the inner side of the fixed plate (12), the half ring frame (21) is provided with a lead screw (22) parallel to the pipeline on the side corresponding to the fixed plate (12), the fixed plate (12) is provided with a threaded hole corresponding to the lead screw (22), the outer end of the lead screw (22) is provided with a rotating handle (25), the inner end of the lead screw (22) is fixedly connected with the half ring frame (21) through the threaded hole, the inner side of the fixed plate (12) is provided with a pair of positioning supports (4) corresponding to the pipeline, the two positioning supports (4) are correspondingly connected with the fixed plate (12) through the adapter rods (24) at the ends, the bottom frame (11) is provided with a pair of guide seats (16), the guide seats (16) are provided with guide grooves (17) corresponding to the positioning supports (4), the guide grooves (17) are arranged in an inclined manner with the axis perpendicular to the axis of the pipeline, and the ends away from the pipeline of the positioning supports (4) are inserted into the guide grooves (17).

2. The tubing welding positioning device of claim 1, wherein, The fixed plate (12) is fixedly connected with the corresponding side of the bottom frame (11) away from the pipeline, the outer side of the side close to the pipeline of the fixed plate (12) is provided with a pair of first connecting seats (5), each pair of first connecting seats (5) is mirror image corresponding with the first clamping groove (14) as the center, the side opposite to the fixed plate (12) of the bottom frame (11) is provided with a sliding groove (19) perpendicular to the pipeline, the moving frame (13) is slidably connected with the bottom frame (11) through the sliding groove (19), the side close to the pipeline of the moving frame (13) is provided with a first pipe clamp (18), the second clamping groove (15) is arranged at the end close to the pipeline of the first pipe clamp (18), the end close to the pipeline of the first pipe clamp (18) is provided with a pair of second connecting seats (51), each pair of second connecting seats (51) is mirror image corresponding with the second clamping groove (15) as the center, the first connecting seat (5) and the second connecting seat (51) are parallel to the bottom frame (11), and U-shaped grooves are formed in the first connecting seat (5) and the second connecting seat (51) respectively.

3. The tubing welding positioning device of claim 1, wherein, A pair of support seats (23) corresponding to the positioning supports (4) are arranged on the inner side of the half ring frame (21), and the two ends of the adapter rod (24) are rotatably connected with the support seats (23) and the positioning supports (4) respectively.

4. The tubing welding positioning device of claim 3, wherein, The positioning support (4) comprises a pair of parallel top rods (41) with the same height, a guide seat (16) is arranged on the corresponding side of the bottom frame (11) corresponding to the top rod (41), the bottom end of the top rod (41) is inserted into the guide groove (17) of the corresponding guide seat (16) and is in sliding connection with the guide seat (16), a connecting block (42) corresponding to the adapter rod (24) is arranged on the side wall of the other side of the top rod (41) opposite to the connecting rod, and the positioning support (4) is connected with the adapter rod (24) through the connecting block (42) of the top rod (41) on one side of the semi-ring frame (21).

5. The tubing welding positioning device of claim 4, wherein, The top end of the top rod (41) is provided with a rotatingly connected rolling ball (43), and a pair of connecting rods corresponding to the parallel sides of the pair of top rods (41) are arranged, the two connecting rods are connected to the top rods (41) on the two sides respectively, and the two top rods (41) are in detachable fixed connection through the two connecting rods.

6. The tubing welding positioning device of claim 1, wherein, The rack (1) is provided with a micro level.

7. The tubing welding positioning device of claim 1, wherein, The positioning device further comprises an angle fixing assembly (6) comprising a connecting vertical plate parallel to the fixing plate (12), which is arranged on the other side of the moving frame (13) opposite to the rack (1), a corresponding first guide rail (62) and a first sleeve (66) are arranged between the rack (1) and the connecting vertical plate (61) and are parallel to the axis of the first pipe clamp (18), wherein the inner side end of the first guide rail (62) close to the rack (1) is fixedly connected to the outer side of the corresponding side of the bottom frame (11), the outer side end of the first sleeve (66) is fixedly connected to the inner side of the connecting vertical plate (61), the outer side end of the first guide rail (62) is inserted into the inner cavity of the first sleeve (66) and is in sliding connection with the first sleeve (66), a fixing frame (64) is arranged below the connecting vertical plate, a corresponding second guide rail (63) and a second sleeve (67) are arranged between the connecting vertical plate and the fixing frame (64), the second guide rail (63) and the second sleeve (67) are perpendicular to the first guide rail (62), wherein the corresponding one end of the second guide rail (63) and the second sleeve (67) is inserted into the inner cavity of the other one, and the two are in sliding connection, the other end of the second guide rail (63) is fixedly connected to the connecting vertical plate, and the other end of the second sleeve (67) is fixedly connected to the fixing frame (64), a pair of second pipe clamps (65) corresponding to the first pipe clamp (18) are arranged on the inner side of the fixing frame (64), the outer side end of the second pipe clamp (65) close to one side of the fixing frame (64) is fixedly connected to the fixing frame (64), a pair of arc-shaped third clamping grooves (68) corresponding to the second clamping grooves (15) are arranged on the inner side of the proximal end of the two second pipe clamps (65), the axis of the third clamping groove (68) is perpendicular to the axis of the second clamping groove (15), and a pair of third connecting seats (52) with through U-shaped grooves are arranged on the outer side of the proximal end of the two second pipe clamps (65), and the two second pipe clamps (65) are in detachable fixed connection through the third connecting seat (52) and external bolts.

8. The tubing welding positioning device of claim 7, wherein, The side wall of the first sleeve (66) and the second sleeve (67) is provided with a positioning hole, and a corresponding fastening pin (7) is installed in the positioning hole. The side wall of the fastening pin (7) is provided with an external thread, and the positioning hole is provided with an internal thread corresponding to the external thread of the fastening pin (7). The positioning hole and the fastening pin (7) are engaged with each other through the threads.

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