CN211966510U

CN211966510U - Pipeline welding platform

Info

Publication number: CN211966510U
Application number: CN202020193025.9U
Authority: CN
Inventors: 王祥昆; 付春峰; 孙宏亮; 王少云; 马瑞; 费立敏; 迟白冰
Original assignee: China Construction First Group Corp Ltd; China Construction First Bureau Group Installation Engineering Co Ltd
Current assignee: China Construction First Group Corp Ltd; China Construction First Bureau Group Installation Engineering Co Ltd
Priority date: 2020-02-21
Filing date: 2020-02-21
Publication date: 2020-11-20
Anticipated expiration: 2030-02-21

Abstract

The utility model discloses a pipeline welding platform, which comprises a supporting box body, a leveling device, a bearing device and a pressing device; the supporting box body is of a horizontally arranged cuboid structure, telescopic supporting legs are vertically arranged at four corners of the supporting box body, and supporting cross beams are correspondingly arranged at short edges on two sides of the top of the supporting box body; the leveling device is correspondingly arranged between the telescopic supporting leg and the supporting cross beam; the supporting device is vertically arranged on the supporting beam and comprises two supporting pipes which are horizontally arranged in parallel, and a width-adjustable containing groove is formed above the two supporting pipes; the pressing device is arranged on the supporting beam on one side of the supporting pipe and presses and fixes the welded pipeline and the pressure-bearing pipe. The utility model discloses an interval adjustable bearing pipe is as supporting device, the welding pipeline of applicable different pipe diameters, and the setting can be dismantled to the bearing pipe, can change the bearing pipe of different diameters according to different welding pipeline demands, guarantees the welding effect, and the bearing pipe passes through bearing rotatable coupling on welding platform, need not to face upward to weld when welding, improves to mouthful welding quality.

Description

Pipeline welding platform

Technical Field

The utility model relates to an industrial pipeline welding construction technical field, concretely relates to pipeline welding platform.

Background

In the industrial pipeline construction process, welding is the most common and most frequent work, and the quality of the welding work is directly related to the operation of engineering.

In the current industrial pipeline construction process, the workbench for auxiliary welding of bent pipes, reducing pipes, flanges and the like has single function. For example, angle iron or channel steel is used as an operating platform for supporting pipeline welding, and the welding device can only be suitable for pipeline welding work of corresponding materials and specifications and cannot meet the welding work under the condition of changing specifications and materials. Meanwhile, most of the workbenches manufactured on the construction site are connected in a welded mode, the workbenches are fixed in height and inconvenient to move, and when operators with different heights are replaced, the height of the workbenches becomes a defect of inconvenience in operation. The above various problems are combined to influence the efficiency of a user, increase the quality risk, influence the construction progress and increase the construction cost.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pipeline welding platform to solve the pipeline welding platform commonality not high, remove inconvenient technical problem.

In order to achieve the technical purpose, the utility model adopts the following technical scheme:

a pipeline welding platform comprises a supporting box body, a leveling device, a supporting device and a pressing device;

the supporting box body is of a horizontally arranged cuboid structure, telescopic supporting legs are vertically arranged at four corners of the supporting box body, and supporting cross beams are correspondingly arranged at short edges on two sides of the top of the supporting box body; the leveling device is arranged between the telescopic supporting leg and the supporting cross beam; the supporting device is vertically arranged on the supporting cross beams and comprises two supporting tubes which are horizontally arranged in parallel, two end parts of each supporting tube are respectively arranged on the two supporting cross beams, a welding pipeline containing groove with adjustable width is formed above the two supporting tubes, and the welding pipeline is arranged in the welding pipeline containing groove; the bottom of the pressing device is arranged on a supporting beam on one side of the bearing pipe, and the top of the pressing device is arranged on the welding pipeline, so that the welding pipeline and the bearing pipe are pressed and fixed.

Preferably, the telescopic supporting leg comprises an inner supporting leg and an outer supporting leg which are arranged in a nested mode, and the inner supporting leg is detachably connected with the outer supporting leg in a height-adjustable mode through a pin bolt.

Preferably, levelling device includes adjusting bolt and air level, adjusting bolt includes adjusting screw and the nut of cover on adjusting screw, the nut includes two fixation nut at a middle adjusting nut and both ends, adjusting nut and adjusting screw structure as an organic whole, fixation nut vertical correspondence respectively welds in the top of telescopic supporting leg and the bottom of supporting beam, adjusting screw's upper and lower two part screw threads are opposite soon, the air level is fixed to be located on the supporting beam top surface.

Preferably, the leveling device further comprises two movable nuts and two limiting bolts, the two movable nuts are arranged on the adjusting screw rods which are arranged between the fixed nuts and the adjusting nuts and are opposite in rotating direction, the movable nuts are tightly attached to the fixed nuts after leveling, and the limiting bolts are arranged at two ends of the adjusting screw rods and are located on the outer sides of the fixed nuts.

Preferably, the supporting device comprises a supporting support, a bearing and a supporting pipe, the bottom of the supporting support is a U-shaped inserting plate, the U-shaped inserting plate is sleeved on the supporting cross beam and is detachably connected with the supporting cross beam in an adjustable position through a pin bolt; the bearing support top is equipped with the bearing frame, the level is equipped with the bearing in the bearing frame, the bearing pipe is located on the bearing.

Preferably, first longitudinal shafts are arranged at two ends of the bearing, sealing plates with openings are welded on the outer sides of the first longitudinal shafts, second longitudinal shafts are welded on the outer sides of the sealing plates, the axes of the bearing, the first longitudinal shafts and the second longitudinal shafts are located on the same straight line, the first longitudinal shafts are of a solid structure, mounting grooves are formed in two sides of the top and the bottom of the bearing, a crankshaft gasket and an adjusting gasket are sequentially arranged in the mounting grooves in the top portion, close to the solid part in the middle of the bearing, from top to bottom, and the crankshaft gasket and the adjusting gasket are detachably connected with the solid part in the middle;

the bearing pipe support structure is characterized in that an umbrella-shaped support framework used for supporting the bearing pipe is arranged on the second longitudinal axis, the umbrella-shaped support framework comprises a first crankshaft, a second crankshaft, a sliding sleeve and a protection plate, the sliding sleeve is sleeved on the second longitudinal axis in a sliding mode, the first crankshaft and the second crankshaft are composed of two bent rods which are hinged together, the protection plate is arranged at the hinged position and abuts against the inner wall of the bearing pipe, one end of the first crankshaft penetrates through an opening of a sealing plate on the outer side of the first longitudinal axis to be hinged to a crankshaft gasket, the other end of the first crankshaft is hinged to the sliding sleeve, the bent rod, close to one side of the first longitudinal axis, of the first crankshaft is V-shaped, the bent portion of the V-shaped bent rod is hinged to the second longitudinal axis, one end of the second crankshaft is hinged to the second longitudinal axis, the other end of the second crankshaft is hinged to the sliding sleeve, the second crankshaft is provided with a plurality of bent rods, and the hinged positions of the In a vertical plane.

Preferably, the pressing device comprises a connecting sheet arranged on the top surface of the supporting beam, and the connecting sheet is detachably connected with the supporting beam in an adjustable position through a pin bolt; the pressing device further comprises an L-shaped rod, the bottom end of a vertical rod of the L-shaped rod is welded on the connecting piece, a horizontal rod parallel supporting beam is arranged above the welding pipeline, a plurality of pressure rod nuts are welded on one side of the horizontal rod at intervals, T-shaped threaded pressure rods are arranged in the pressure rod nuts of the welding pipeline, and the bottom ends of the vertical rods of the T-shaped threaded pressure rods are provided with rubber pads to press and fix the welding pipeline and the bearing pipe.

Preferably, the outer surface of the supporting box body is provided with a box body panel, the inside of the supporting box body is provided with a box body space for accommodating a welding tool, a box door is arranged on the box body panel on one side, and a welding rod barrel hanging piece and a cable hook are arranged on the box body panel on the other side.

Preferably, the bottom of the telescopic supporting leg is provided with a universal wheel, and the universal wheel is provided with a braking device.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the bearing pipes with adjustable intervals are used as bearing devices, so that the device is suitable for welding pipelines with different pipe diameters and has strong universality;

2. the supporting tubes are detachably arranged, the umbrella-shaped supporting framework serves as a supporting structure of the supporting tubes, the supporting tubes with different diameters can be replaced according to different requirements of welding pipelines, and the welding effect is guaranteed;

3. the bearing tube is rotatably connected to the welding platform through the bearing, overhead welding is not needed during butt welding, and the butt welding quality is improved;

4. the welding platform is provided with telescopic supporting legs, and the height of the welding platform can be adjusted according to the height of an operator;

5. the universal wheels with the braking devices are arranged at the bottom of the welding platform, and the platform can be moved in a construction operation space as required.

Drawings

The above and/or other aspects and advantages of the present invention will become more apparent and more readily appreciated from the detailed description taken in conjunction with the following drawings, which are given by way of illustration only and not by way of limitation, wherein:

fig. 1 is a schematic view of an overall structure of a pipeline welding platform according to the present invention;

fig. 2 is a right side view of a pipeline welding platform according to the present invention;

fig. 3 is a schematic structural view of a leveling device of a pipeline welding platform according to the present invention;

fig. 4 is a schematic structural view of a supporting beam of the pipeline welding platform according to the present invention;

fig. 5 is a schematic structural view of a support seat of a pipeline welding platform according to the present invention;

fig. 6 is a schematic view of the internal structure of the pipeline welding platform at the first longitudinal axis and the second longitudinal axis;

fig. 7 is a schematic structural diagram of a pressing device of a pipeline welding platform according to the present invention.

Reference numerals: 1-supporting box body, 101-box body panel, 102-box door, 2-telescopic supporting leg, 201-inner supporting leg, 202-outer supporting leg, 203-supporting leg bolt hole, 204-supporting leg bolt, 3-leveling device, 301-fixing nut, 302-movable nut, 303-adjusting screw rod, 304-adjusting nut, 305-limiting bolt, 306-leveling bubble, 4-supporting beam, 401-first beam bolt hole, 402-second beam bolt hole, 403-beam bolt, 5-bearing support, 501-U type inserting plate, 502-inserting plate bolt hole, 503-bearing seat, 6-bearing, 601-first longitudinal axis, 6011-mounting groove, 6012-crankshaft gasket, 6013-adjusting gasket, 6014-fastening bolt, 602-second longitudinal shaft, 603-first crankshaft, 604-second crankshaft, 605-sliding sleeve, 606-protective plate, 7-supporting pipe, 8-pressing device, 801-connecting sheet, 802-connecting sheet bolt hole, 803-L-shaped rod, 804-T-shaped threaded pressure rod, 805-pressure rod nut, 806-rubber pad, 9-welding pipeline and 10-universal wheel.

Detailed Description

Hereinafter, an embodiment of a pipe welding platform of the present invention will be described with reference to the accompanying drawings. The embodiments described herein are specific embodiments of the present invention, and are intended to be illustrative of the concepts of the present invention, which are intended to be illustrative and exemplary, and should not be construed as limiting the scope of the embodiments of the present invention. In addition to the embodiments described herein, those skilled in the art will be able to employ other technical solutions which are obvious based on the disclosure of the claims and the specification of the present application, and these technical solutions include technical solutions which make any obvious replacement or modification for the embodiments described herein.

In the description of the present invention, it should be noted that the terms "top", "bottom", "upper", "lower", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The drawings in the present specification are schematic views to assist in explaining the concept of the present invention, and schematically show the shapes of the respective portions and the mutual relationships thereof. It should be noted that for the sake of clarity in showing the structures of the various components of the embodiments of the present invention, the drawings are not drawn to the same scale. Like reference numerals are used to denote like parts.

The principles and features of the present invention are described below in conjunction with the following drawings, the illustrated embodiments are provided to explain the present invention and not to limit the scope of the invention. The preferred embodiments of the present invention will be described in further detail below with reference to fig. 1-7:

as shown in fig. 1-2, the preferred pipeline welding platform of the present invention comprises a supporting box 1, a leveling device 3, a supporting device and a pressing device 8;

the supporting box body 1 is of a horizontally arranged cuboid structure, a box body panel 101 is arranged on the outer surface of the supporting box body 1, a box body space for accommodating a welding tool is arranged in the supporting box body 1, a box door 102 is arranged on one side of the box body panel 101, a welding rod barrel hanging piece and a cable hook are arranged on the other side of the box body panel 101, an insulating rubber sleeve is sleeved outside the cable hook, telescopic supporting legs 2 are vertically arranged at four corners of the supporting box body 1, and supporting cross beams 4 are correspondingly arranged at short edges of two sides; the leveling device 3 is correspondingly arranged between the telescopic supporting leg 2 and the supporting beam 4; the supporting device is vertically arranged on the supporting cross beam 4 and comprises two supporting tubes 7 horizontally arranged in parallel, two end parts of each supporting tube 7 are respectively arranged on the two supporting cross beams 4, a welding pipeline containing groove with adjustable width is formed above the two supporting tubes 7, and a welding pipeline 9 is arranged in the welding pipeline containing groove; the bottom of the pressing device 8 is arranged on the supporting beam 4 on one side of the supporting pipe 7, and the top of the pressing device is arranged above the welding pipeline 9, so that the welding pipeline 9 and the supporting pipe 7 are pressed and fixed;

the telescopic supporting leg 2 comprises an inner supporting leg 201 and an outer supporting leg 202 which are nested, supporting leg bolt holes 203 are correspondingly formed in the inner supporting leg 201 and the outer supporting leg 202, the supporting leg bolt holes 203 are vertically arranged at intervals, supporting leg bolts 204 are arranged in the telescopic supporting leg 2, the supporting leg bolts 204 correspondingly penetrate through the supporting leg bolt holes 203 of the inner supporting leg 201 and the outer supporting leg 202 which are aligned, the inner supporting leg 201 and the outer supporting leg 202 are fixed, and the operation height of the welding platform can be adjusted by adjusting the height of the inner supporting leg 201 extending out of the outer supporting leg 202 so as to adapt to the height of a user;

as shown in fig. 3, the leveling device 3 includes an adjusting bolt and a level bubble 306, the adjusting bolt includes an adjusting screw 303 and a nut sleeved on the adjusting screw 303, the nut includes a middle adjusting nut 304 and two fixing nuts 301 at two ends, the adjusting nut 304 and the adjusting screw 303 are integrated into a whole, the fixing nuts 301 are respectively vertically welded on the top of the telescopic supporting leg 2 and the bottom of the supporting beam 4 correspondingly, the upper and lower threads of the adjusting screw 303 are turned in opposite directions, the level bubble 306 is glued on the top surface of the supporting beam 4, the adjusting nut 304 is screwed to adjust the length of the adjusting screw 303 between the two fixing nuts 301, so as to finely adjust the height of the top supporting beam 4, the level bubble 306 is centered after leveling, the top surface of the supporting beam 4 is level, and in order to strengthen the connection and fixation between the leveling device and the top of the telescopic supporting leg 2 and the bottom of the supporting beam 4, the leveling device is further provided with two movable nuts 302, in order to prevent the adjusting screw 303 from being screwed out of the fixing nut 301, the leveling device is further provided with limiting bolts 305, the two movable nuts 302 are arranged on the adjusting screw 303 with opposite screwing directions between the fixing nut 301 and the adjusting nut 304, after leveling, the movable nuts 302 are screwed to the inner side surface of the fixing nut 301 and tightly attached to the inner side surface of the fixing nut 301 for reinforcing connection, and the limiting bolts 305 are arranged at two end parts of the adjusting screw 303 and are positioned outside the fixing nut 301;

as shown in fig. 4-6, the supporting device includes a supporting support 5, a bearing 6 and a supporting tube 7, the bottom of the supporting support 5 is a U-shaped inserting plate 501, the U-shaped inserting plate 501 is sleeved on the supporting beam 4, an inserting plate pin hole 502 and a first beam pin hole 401 are correspondingly formed on the side walls of the U-shaped arm and the supporting beam 4, the first beam pin holes 401 are horizontally arranged at intervals, a beam pin 403 is arranged in the first beam pin holes, the beam pin 403 passes through the aligned inserting plate pin holes 502 and the first beam pin holes 401, the supporting support 5 is fixed on the supporting beam 4, and the distance between the two supporting tubes 7 can be adjusted by adjusting the first beam pin holes 401 fixed with the supporting support 5 to adapt to the welding pipelines 9 with different diameters; the bearing support 5 is provided with a bearing seat 503 at the top, a bearing 6 is horizontally arranged in the bearing seat 503, two ends of the bearing 6 are provided with a first longitudinal axis 601, an open sealing plate is welded on the outer side of the first longitudinal axis 601, a second longitudinal axis 602 is welded on the outer side surface of the sealing plate, a supporting pipe 7 is arranged outside the second longitudinal axis 602, the axes of the bearing 6, the first longitudinal axis 601, the second longitudinal axis 602 and the supporting pipe 7 are positioned on the same straight line, the first longitudinal axis 601 is of a solid structure, mounting grooves 6011 are formed on two sides of the top bottom, a strip bolt hole is formed in the middle solid part along the axial direction, a crankshaft gasket 6012 and an adjusting gasket 6013 are sequentially arranged in the top mounting groove 6011 and closely attached to the middle solid part from top to bottom, a bolt hole is formed in the middle part of the crankshaft gasket 6012, a strip bolt hole is formed in the middle part of the, a fastening bolt 6014 is arranged in the first longitudinal shaft 601, and the crankshaft gasket 6012, the adjusting gasket 6013 and the solid part in the middle of the first longitudinal shaft 601 are fixedly connected through the fastening bolt 6014; an umbrella-shaped supporting framework for supporting the supporting tube 7 is arranged on the second longitudinal shaft 602, the umbrella-shaped supporting framework comprises a first crankshaft 603, a second crankshaft 604, a sliding sleeve 605 and a protective plate 606, the sliding sleeve 605 is slidably sleeved on the second longitudinal shaft 602, the first crankshaft 603 and the second crankshaft 604 are respectively formed by two curved rods which are hinged together, the protective plate 606 is arranged at the hinged position, the protective plate 606 is abutted against the inner wall of the supporting tube 7, one end of the first crankshaft 603 penetrates through an opening of a sealing plate on the outer side of the first longitudinal shaft 601 to be hinged on a crankshaft gasket 6012, the other end of the first crankshaft 603 is hinged on the sliding sleeve 605, the curved rod on one side of the first longitudinal shaft 603 close to the first longitudinal shaft 601 is in a V shape, the bent part of the V-shaped curved rod is hinged on the second longitudinal shaft 602, one end of the second crankshaft 604 is hinged on the second longitudinal shaft 602, the other end of, the supporting tubes are arranged along the circumference of the sliding sleeve 605 at intervals, the hinged positions of the second crankshaft 604 and the second longitudinal shaft 602, the V-shaped bent rod bent part of the first crankshaft 603 and the hinged position of the second longitudinal shaft 602 are located in the same vertical plane, when the pipe diameter of the supporting tube 7 is changed, the hinged positions of the crankshaft gasket 6012 and the first crankshaft 603 can be adjusted by increasing or reducing the number of adjusting gaskets 6013 and moving the crankshaft gasket 6012 left and right to adjust the bolt fixing positions, the sliding sleeve 605 is driven to move by the first crankshaft 603, and the protecting plate 606 is adjusted to abut against the position, so that the adjusted supporting tube 7 is effectively supported;

as shown in fig. 7, the pressing device 8 includes a connecting piece 801 disposed on the top surface of the supporting beam 4, the connecting piece 801 and the top surface of the supporting beam 4 are correspondingly provided with a connecting piece pin hole 802 and a second beam pin hole 802, the second beam pin hole 802 is horizontally spaced, a beam pin 403 is disposed in the connecting piece 801, and the beam pin 403 passes through the connecting piece pin hole 802 and the second beam pin hole 802 which are aligned, so as to fix the connecting piece 801 on the supporting beam 4; the pressing device 8 further comprises an L-shaped rod 803, the bottom end of a vertical rod of the L-shaped rod 803 is welded on the connecting sheet 801, the horizontal rod parallel supporting beam 4 is arranged above the welded pipeline 9, a plurality of compression rod nuts 805 are welded on one side of the horizontal rod at intervals, T-shaped threaded compression rods 804 are arranged in the compression rod nuts 805 facing the welded pipeline 9, rubber pads 806 are arranged at the bottom ends of the vertical rods of the T-shaped threaded compression rods 804, the welded pipeline 9 is tightly pressed and fixed in a containing groove of the supporting device, the connecting sheet 801 is of a detachable installation structure, and the compression position of the pressing device 8 is adjusted by adjusting the fixed position of the connecting sheet 801 and selecting the compression rod nuts 805 in proper positions to be screwed into the T-shaped threaded;

in order to facilitate the movement of the welding platform, the bottom of the telescopic supporting leg 2 is provided with a universal wheel 10, and the universal wheel 10 is provided with a braking device.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. The utility model provides a pipeline welded platform which characterized in that: comprises a supporting box body (1), a leveling device (3), a supporting device and a pressing device (8);

the supporting box body (1) is of a horizontally arranged cuboid structure, telescopic supporting legs (2) are vertically arranged at four corners of the supporting box body, and supporting cross beams (4) are correspondingly arranged at short edges on two sides of the top of the supporting box body; the leveling device (3) is arranged between the telescopic supporting leg (2) and the supporting cross beam (4); the supporting device is vertically arranged on the supporting cross beams (4) and comprises two supporting tubes (7) which are horizontally arranged in parallel, two end parts of each supporting tube (7) are respectively arranged on the two supporting cross beams (4), a welding pipeline containing groove with adjustable width is formed above the two supporting tubes (7), and the welding pipeline (9) is arranged in the welding pipeline containing groove; the bottom of the pressing device (8) is arranged on the supporting beam (4) on one side of the bearing pipe (7), the top of the pressing device is arranged on the welding pipeline (9), and the welding pipeline (9) and the bearing pipe (7) are pressed and fixed.

2. The pipeline welding platform of claim 1, wherein: the telescopic supporting leg (2) comprises an inner supporting leg (201) and an outer supporting leg (202) which are arranged in a nested mode, and the inner supporting leg (201) is detachably connected with the outer supporting leg (202) in a height-adjustable mode through a pin bolt.

3. The pipeline welding platform of claim 1, wherein: levelling device (3) include adjusting bolt and air level (306), adjusting bolt includes adjusting screw (303) and establishes the nut on adjusting screw (303), the nut includes two fixation nut (301) at middle adjusting nut (304) and both ends, adjusting nut (304) and adjusting screw (303) structure as an organic whole, fixation nut (301) vertical correspondence respectively welds in the top of telescopic supporting leg (2) and the bottom of supporting beam (4), two upper and lower partial screw threads of adjusting screw (303) are turned to opposite directions, air level (306) are fixed to be located on supporting beam (4) top surface.

4. The pipeline welding platform of claim 3, wherein: leveling device (3) still include movable nut (302) and spacing bolt (305), movable nut (302) have two, locate and revolve to opposite adjusting screw (303) between fixed nut (301) and adjusting nut (304) on, after the leveling, movable nut (302) paste tight fixed nut (301), adjusting screw (303) both ends are located in spacing bolt (305), are located the fixed nut (301) outside.

5. The pipeline welding platform of claim 1, wherein: the bearing device comprises a bearing support (5), a bearing (6) and a bearing pipe (7), wherein a U-shaped inserting plate (501) is arranged at the bottom of the bearing support (5), the U-shaped inserting plate (501) is sleeved on the supporting cross beam (4), and the U-shaped inserting plate and the supporting cross beam (4) are detachably connected in an adjustable position through a pin bolt; bearing frame (503) are equipped with at bearing support (5) top, the level is equipped with bearing (6) in bearing frame (503), bearing pipe (7) are located on bearing (6).

6. The pipeline welding platform of claim 5, wherein: a first longitudinal shaft (601) is arranged at two ends of the bearing (6), an open sealing plate is welded on the outer side of the first longitudinal shaft (601), a second longitudinal shaft (602) is welded on the outer side surface of the sealing plate, the axes of the bearing (6), the first longitudinal shaft (601) and the second longitudinal shaft (602) are positioned on the same straight line, the first longitudinal shaft (601) is of a solid structure, mounting grooves (6011) are formed in the two sides of the top and the bottom, a crankshaft gasket (6012) and an adjusting gasket (6013) are sequentially arranged in the top mounting groove (6011) and tightly attached to the solid part in the middle from top to bottom, and the crankshaft gasket (6012) and the adjusting gasket (6013) are detachably connected with the solid part in the middle of the first;

an umbrella-shaped supporting framework used for supporting the supporting and supporting pipe (7) is arranged on the second longitudinal shaft (602), the umbrella-shaped supporting framework comprises a first crankshaft (603), a second crankshaft (604), a sliding sleeve (605) and a protective plate (606), the sliding sleeve (605) is sleeved on the second longitudinal shaft (602) in a sliding mode, the first crankshaft (603) and the second crankshaft (604) are both composed of two curved rods hinged together, the protective plate (606) is arranged at the hinged position, the protective plate (606) abuts against the inner wall of the supporting and supporting pipe (7), one end of the first crankshaft (603) penetrates through an opening of the sealing plate on the outer side of the first longitudinal shaft (601) and is hinged to a crankshaft gasket (6012), the other end of the first crankshaft (603) is hinged to the sliding sleeve (605), the curved rod on one side, close to the first longitudinal shaft (601), is in a V shape, and the bent part of the V-shaped curved rod is hinged to the second, one end of the second crankshaft (604) is hinged to the second longitudinal shaft (602), the other end of the second crankshaft (604) is hinged to the sliding sleeve (605), a plurality of second crankshafts (604) are arranged at intervals along the circumference of the sliding sleeve (605), and the hinged position of the second crankshaft (604) and the second longitudinal shaft (602) and the hinged position of the V-shaped bent rod bending part of the first crankshaft (603) and the hinged position of the second longitudinal shaft (602) are located in the same vertical plane.

7. The pipeline welding platform of claim 1, wherein: the pressing device (8) comprises a connecting piece (801) arranged on the top surface of the supporting cross beam (4), and the connecting piece (801) is detachably connected with the supporting cross beam (4) in an adjustable position through a pin; closing device (8) still include L type pole (803), L type pole (803) montant bottom weld is on connection piece (801), and welding pipeline (9) top is located in horizontal pole parallel support crossbeam (4), and a plurality of depression bar nuts (805) have been welded to horizontal pole one side interval, just establish T type screw thread depression bar (804) in depression bar nut (805) to welding pipeline (9), the montant bottom of T type screw thread depression bar (804) is equipped with rubber pad (806), compresses tightly fixedly welding pipeline (9) and trusteeship (7).

8. The pipeline welding platform of claim 1, wherein: the outer surface of the supporting box body (1) is provided with a box body panel (101), a box body space for containing a welding tool is arranged inside the supporting box body, a box door (102) is arranged on the box body panel (101) on one side, and a welding rod barrel hanging piece and a cable hook are arranged on the box body panel (101) on the other side.

9. The pipeline welding platform of claim 1, wherein: the bottom of the telescopic supporting leg (2) is provided with a universal wheel (10), and the universal wheel (10) is provided with a braking device.