CN108817836B

CN108817836B - Welding device for inner wall of large-diameter circular pipe

Info

Publication number: CN108817836B
Application number: CN201810915345.8A
Authority: CN
Inventors: 程敬卿; 薛卫昌; 周乾坤; 刘泽军
Original assignee: Anhui Remanufacturing Engineering Design Center Co ltd
Current assignee: Anhui Remanufacturing Engineering Design Center Co ltd
Priority date: 2018-08-13
Filing date: 2018-08-13
Publication date: 2020-09-22
Anticipated expiration: 2038-08-13
Also published as: CN108817836A

Abstract

The invention relates to a large-diameter circular tube inner wall welding device which comprises a bottom plate, wherein the left end of the bottom plate is provided with two rolling mechanisms, the right end of the bottom plate is fixedly provided with a lifting cylinder, the output end of the lifting cylinder is fixedly provided with a rodless cylinder, the driving end of the rodless cylinder is connected with a mounting frame, a wall plate is fixedly arranged on the mounting frame, four moving seats are uniformly distributed on the left end surface of the wall plate along the circumferential direction, the four moving seats are all in sliding connection with the wall plate along the radial direction of a circumferential line formed by the four moving seats, welding guns are connected on the moving seats, a supporting plate is arranged on the right side of the wall plate, a servo motor and a guide rod are fixedly arranged on the supporting plate, a driving shaft of the servo motor is connected with a lead screw, a cylinder is arranged. The four welding guns are adopted for simultaneous operation, so that the welding time is greatly shortened, and the working efficiency is improved; can adapt to the circular tube welding of different diameters size, improve whole welding set's suitability.

Description

Welding device for inner wall of large-diameter circular pipe

Technical Field

The invention relates to the technical field of welding machinery, in particular to a device for welding the inner wall of a large-diameter circular pipe.

Background

The pipe is one of present common basic work piece, and major diameter pipe adds man-hour, no matter is to a plurality of pipe group to or carries out the internal coating to restore, all needs to use welding equipment. However, most of the existing welding equipment is a single welding gun head, the inner wall of a processed circular tube needs to be completely rotated, when the diameter of the circular tube is larger, the time is increased, and the construction period is prolonged; simultaneously, because under the user demand of difference, the diameter diverse of pipe, traditional welding equipment is difficult to the welding demand that adapts to different diameter pipes, and application range is narrow, and the compatibility is poor, is unfavorable for the inner wall welding operation of pipe.

Disclosure of Invention

In order to avoid and solve the technical problems, the invention provides a welding device for the inner wall of a large-diameter circular pipe.

The technical problem to be solved by the invention is realized by adopting the following technical scheme:

the utility model provides a major diameter pipe inner wall welding set, includes the bottom plate, the left end of bottom plate is equipped with two and is the front and back roll mechanism, the right-hand member that distribute and be fixed with the lift cylinder that is vertical placing, the output of lift cylinder is fixed with rodless cylinder, rodless cylinder's drive end is connected with the mounting bracket that is cantilever structure, the cantilever of mounting bracket is served the vertical fixation and is had the wallboard, there are four removal seats along the circumferencial direction equipartition on the left end face of wallboard, four removal seats all radially with wallboard sliding connection along the circumference that self constitutes, all be connected with the outside welder in center that the wallboard was kept away from to the muzzle on the removal seat.

The right side parallel of wallboard is equipped with the backup pad, be fixed with servo motor and the guide arm that is the level setting in the backup pad, servo motor's drive shaft is connected with the lead screw, install the cylinder on lead screw and the guide arm, correspond the department with removing the seat on the cylindrical periphery and all be equipped with the wedge, remove the seat on be equipped with wedge sliding fit's connecting block.

Preferably, the wall plate is provided with a long slide way for the wedge block to pass through at the matching position with the moving seat, and the right end of the moving seat is provided with a limiting convex shoulder clung to the wall plate.

Preferably, the wall plate is provided with a rectangular hole which is communicated with the long slideway and can be penetrated by the column.

Preferably, the connecting block is T-shaped, and a sliding groove matched with the connecting block is formed in the wedge-shaped block.

Preferably, the rolling mechanism comprises a roller and a motor with a driving shaft connected with the roller, and two ends of the roller are respectively provided with a mounting seat fixed on the bottom plate.

The invention has the beneficial effects that: the invention has reasonable structural design, adopts four welding guns to operate simultaneously, greatly shortens the welding time, improves the working efficiency and avoids the prolongation of the construction period; meanwhile, the welding device can be adjusted to adapt to welding of round pipes with different diameters, the applicability of the whole welding device is improved, and the welding device has the advantages of being simple in operation, convenient to apply and wide in application range.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a front view of the structural assembly of the present invention;

FIG. 2 is a partial sectional view taken along line A-A of FIG. 1;

FIG. 3 is a left side view of the structural components of the present invention;

FIG. 4 is a partial sectional view taken along line B-B of FIG. 3;

fig. 5 is a schematic structural view of the circular tube of the present invention.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below.

As shown in fig. 1 to 5, a major diameter pipe inner wall welding set, including bottom plate 1, the left end of bottom plate 1 is equipped with two and is that the lift cylinder 3 that is vertical placing is fixed with to roll mechanism 2, the right-hand member that distributes around, the output end of lift cylinder 3 is fixed with rodless cylinder 4, rodless cylinder 4's drive end is connected with mounting bracket 5 that is cantilever structure, the cantilever of mounting bracket 5 is served vertical fixation and is had wallboard 6, there are four removal seats 7 along the circumferencial direction equipartition on wallboard 6's the left end face, and four removal seats 7 are all along the radial and wallboard 6 sliding connection of the circumference that self constitutes, all be connected with the outside welder 8 in center that wallboard 6 was kept away from to the muzzle on the removal seat 7. In a projection onto the same vertical plane, the mouth of the welding torch 8 extends beyond the outer contour of the wall plate 6.

The parallel backup pad 9 that is equipped with in right side of wallboard 6, be fixed with servo motor 10 and the guide arm 11 that is the level setting in backup pad 9, servo motor 10's drive shaft is connected with lead screw 12, install cylinder 13 on lead screw 12 and the guide arm 11, correspond the department on cylinder 13's the periphery and all be equipped with wedge 14 with removal seat 7, be equipped with on the removal seat 7 with wedge 14 sliding fit's connecting block 15.

The wall plate 6 is provided with long slide ways 6a at the matching parts with the movable seat 7 for the wedge block 14 to pass through, and the right end of the movable seat 7 is provided with a limiting convex shoulder 7a tightly attached to the wall plate 6.

The wall plate 6 is provided with a rectangular hole 6b which is communicated with the long slideway 6a and can be penetrated by the column 13.

The connecting block 15 is T-shaped, and the wedge block 14 is provided with a sliding groove 14a matched with the connecting block 15.

The rolling mechanism 2 comprises a roller 21 and a motor 22 with a driving shaft connected with the roller 21, wherein mounting seats 23 fixed on the bottom plate 1 are arranged at two ends of the roller 21, and the motor 22 is fixed on the mounting seats 23.

During the use, place the pipe of major diameter and make its position fix on rolling mechanism 2, start lift cylinder 3, the height of adjustment mounting bracket 5 for the axis that four remove 7 distributions and the axis coincidence of pipe, then, start rodless cylinder 4 and can promote mounting bracket 5 and remove to the welding position of pipe inner wall, stop after finding the welding action position.

Then, start welder 8 welding operation, motor 22 drives running roller 21 and rotates on mount pad 23 simultaneously, and the drive pipe is rotatory around self axis to realize the welding operation of circumference through welder 8, because welder 8's quantity increases, make under the prerequisite that reaches same welding effect, the welding time that significantly reduces improves welding efficiency.

Moreover, in order to adapt to circular tubes with different diameters, the servo motor 10 can be started, the rotary angular displacement is controlled, the lead screw 12 is driven to rotate, the cylinder 13 axially moves along the guide rod 11, the wedge block 14 pushes the movable seat 7 to move outwards along the center of the long slide way 6a far away from the wall plate 6, the movable seat 7 can reciprocate in the long slide way 6a along with the wedge block 14 through the matching of the connecting block 15 and the slide groove 14a, the adjustment and the reset are carried out, further, the welding gun 8 can adapt to the circular tube with larger diameter, and the application range of the whole device is enlarged.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a major diameter pipe inner wall welding set, includes bottom plate (1), the left end of bottom plate (1) is equipped with two roll mechanism (2) that distribute around being, right-hand member are fixed with and are vertical lift cylinder (3) of placing, its characterized in that: a rodless cylinder (4) is fixed at the output end of the lifting cylinder (3), the driving end of the rodless cylinder (4) is connected with a mounting rack (5) in a cantilever structure, a wall plate (6) is vertically fixed at the cantilever end of the mounting rack (5), four moving seats (7) are uniformly distributed on the left end surface of the wall plate (6) along the circumferential direction, the four moving seats (7) are radially and slidably connected with the wall plate (6) along the circumferential line formed by the moving seats, and welding guns (8) with gun mouths far away from the center of the wall plate (6) and facing outwards are connected onto the moving seats (7);

the right side parallel of wallboard (6) is equipped with backup pad (9), be fixed with servo motor (10) and guide arm (11) that are the level setting on backup pad (9), the drive shaft of servo motor (10) is connected with lead screw (12), install cylinder (13) on lead screw (12) and guide arm (11), the department of corresponding with removal seat (7) on the periphery of cylinder (13) all is equipped with wedge (14), be equipped with on removal seat (7) with wedge (14) sliding fit's connecting block (15), all be equipped with long slide (6a) that can supply wedge (14) to pass on wallboard (6) and removal seat (7) cooperation department, the right-hand member of removing seat (7) is equipped with and hugs closely spacing convex shoulder (7a) on wallboard (6), be equipped with on wallboard (6) and communicate with long slide (6a) and can supply rectangular hole (6b) that cylinder (13) passed, the connecting block (15) is T-shaped, and a sliding groove (14a) matched with the connecting block (15) is formed in the wedge-shaped block (14).

2. The device for welding the inner wall of the large-diameter circular pipe according to claim 1, wherein: the rolling mechanism (2) comprises a roller (21) and a motor (22) with a driving shaft connected with the roller (21), and mounting seats (23) fixed on the bottom plate (1) are arranged at two ends of the roller (21).