CN113798772A

CN113798772A - Welding manipulator suitable for pipeline welding

Info

Publication number: CN113798772A
Application number: CN202111182784.0A
Authority: CN
Inventors: 龚辉; 祝勇仁; 陈先进
Original assignee: Zhejiang Institute of Mechanical and Electrical Engineering Co Ltd
Current assignee: Zhonghang Zhichan Technology Hangzhou Co ltd
Priority date: 2021-10-11
Filing date: 2021-10-11
Publication date: 2021-12-17
Anticipated expiration: 2041-10-11
Also published as: CN113798772B

Abstract

The invention discloses a welding manipulator suitable for pipeline welding, which belongs to the technical field of pipeline welding and comprises a base, wherein the top of the base is fixedly connected with a first hydraulic cylinder and a second hydraulic cylinder, the output end of the first hydraulic cylinder is fixedly connected with a first clamp, the output end of the second hydraulic cylinder is fixedly connected with a second clamp, and a first square pipe and a second square pipe are placed at the top of the base; through setting up the backup pad, the backup pad is after stretching into first side pipe, contact mutually when backup pad and second side pipe inner wall, the backup pad holds first side pipe and the welding department of second side pipe, the underneath stabilizing support that has when making the welding be in by the welding, the loading board overturns downwards under the door-shaped rack effect this moment, support the backup pad right-hand member, avoided the backup pad to go deep into first side pipe overlength and leaded to the terminal unstable problem that can't play sufficient supporting role of backup pad, extrusion piece extrusion rubbing block moves down and contacts mutually with first side pipe inner wall, thereby increase the stability of loading board in vertical state.

Description

Welding manipulator suitable for pipeline welding

Technical Field

The invention relates to the technical field of pipeline welding, in particular to a welding manipulator suitable for pipeline welding.

Background

Welding manipulator is used for automatic welding usually, has a plurality of degrees of freedom to adjust, can follow a plurality of directions and weld the work piece, compares with manual welding, and welding manipulator's welding is effectual, and welding efficiency is high, is fit for automatic, the large batch product of standardized production.

In the case of the invention of a welding manipulator suitable for pipeline welding disclosed in the prior art, a chinese patent with patent application number CN202010002405.4 is invented, and the welding manipulator suitable for pipeline welding comprises a casing, a working chamber is arranged in the casing, a welding port is arranged in the working chamber, the welding port can weld parts, the welding port can rotate left and right to weld the parts from different angles, a translation motor is arranged in the upper end wall of the working chamber, the translation motor is connected with a driving shaft in a power manner, the driving shaft rotates to enable the welding port to move horizontally, a left fixing plate and a right fixing plate are arranged in the casing, the left fixing plate and the right fixing plate are matched to fix the parts to be welded, a translation shaft is fixedly connected to the left end face of the left fixing plate, and the translation shaft can rotate in the front and back directions to drive the left fixing plate to rotate in the front and back directions, thereby drive fixed part and carry out the fore-and-aft direction rotation, cooperation welding seam self side-to-side motion and the rotation of left and right direction can carry out the welding process to part each point.

When carrying out the pipeline welding, because the pipeline wall is relatively thin, be welded softly easily, need support the pipe wall, run into the pipeline that the opening is little, inconvenient supports pipeline inner wall welding department, leads to thin pipeline to be heated excessively when the welding and burn through on the one hand, and on the other hand pipeline is too thin lacks the support, leads to welding seam department unevenness when the welding, is not conform to the welding requirement, and the pipeline that welds out can't use.

Based on the technical scheme, the invention designs the welding manipulator suitable for pipeline welding to solve the problems.

Disclosure of Invention

The invention aims to provide a welding manipulator suitable for pipeline welding, and aims to solve the problems that when the pipeline is welded, the pipeline wall is relatively thin, the pipe wall needs to be supported, and when the pipeline with a small opening meets the requirement, the welded position of the inner wall of the pipeline is inconvenient to support, on one hand, the thin pipeline is excessively burnt when being welded, on the other hand, the pipeline is too thin and lacks the support, the welded position is uneven when being welded, the welding requirement is not met, and the welded pipeline cannot be used.

In order to achieve the purpose, the invention provides the following technical scheme: a welding manipulator suitable for pipeline welding comprises a base, wherein a first hydraulic cylinder and a second hydraulic cylinder are fixedly connected to the top of the base, a first clamp is fixedly connected to the output end of the first hydraulic cylinder, a second clamp is fixedly connected to the output end of the second hydraulic cylinder, a first square pipe and a second square pipe are placed on the top of the base, the first square pipe and the second square pipe are mutually spliced and clamped between the first clamp and the second clamp, a third hydraulic cylinder is fixedly connected to the top of the base, a workbench is fixedly connected to the output end of the third hydraulic cylinder, and a welding robot is fixedly connected to the top of the workbench;

the right side of the workbench is fixedly connected with a supporting plate, the supporting plate is mutually contacted with the top of the inner wall of the first square tube, the supporting plate is contacted with the right side of the inner wall of the second square tube, the bottom of the supporting plate is fixedly connected with first bases which are symmetrically distributed in the front and back direction, the two first bases are jointly and rotatably connected with a first rotating shaft, the surface of the first rotating shaft is fixedly connected with a bearing plate, the bearing plate is mutually contacted with the bottom of the inner wall of the first square tube, the surface of the first rotating shaft is fixedly connected with a gear, the gear is meshed with a door-shaped rack, the door-shaped rack is connected to the bottom of the supporting plate in a sliding manner, the right end of the door-shaped rack is contacted with the inner wall of the second square tube, the bottom of the supporting plate is fixedly connected with a first spring seat corresponding to the position of the door-shaped rack, a first return spring is fixedly connected between the first spring seat and the left side of the door-shaped rack;

track plates are fixedly connected to the front side and the rear side of the bearing plate, extrusion blocks are connected to the track plates in a sliding mode, the extrusion blocks are in contact with the inner wall of the second square tube, friction blocks are connected to the right side of the bearing plate in a sliding mode, the friction blocks are in contact with the extrusion blocks, a second spring seat is fixedly connected to the right side of the bearing plate, and a second reset spring is fixedly connected between the second spring seat and the friction blocks;

when the welding manipulator works, the first square pipe and the second square pipe are spliced and placed on the base, the first hydraulic cylinder and the second hydraulic cylinder are started, so that the first clamp and the second clamp fix the spliced first square pipe and second square pipe, the third hydraulic cylinder starts the third hydraulic cylinder to push the workbench to move rightwards, the workbench drives the supporting plate to enter the first square pipe from the left side of the first square pipe and move along with the continuous movement of the workbench, the support plate drives the door-shaped rack and the extrusion block to be in contact with the inner wall of the second square pipe, the door-shaped rack moves leftwards when being extruded so as to drive the gear to rotate anticlockwise, the gear drives the bearing plate to turn downwards through the first rotating shaft and finally turn to a vertical state to be in contact with the top of the inner wall of the first square pipe, the right end of the support plate is supported, the extrusion block moves leftwards when being extruded, the extrusion friction block moves downwards and finally contacts with the bottom of the inner wall of the first square pipe, so that the friction between the bearing plate and the inner wall of the first square pipe is increased, the bearing plate is more stable in the vertical state, the support plate can more stably support the welding position of the first square pipe and the second square pipe, and after the support plate extends into the first square pipe, when the support plate is in contact with the inner wall of the second square pipe, the support plate supports the welding position of the first square pipe and the second square pipe, make the welding be in the underneath stable stay when being welded, the loading board overturns downwards under the door-shaped rack effect this moment, support the backup pad right-hand member, avoided the backup pad to go deep into first party pipe overlength and leaded to the terminal unstable problem that can't play sufficient supporting role of backup pad, extrusion piece extrusion friction block moves down and contacts mutually with first party inside pipe wall, thereby increase the stability of loading board at vertical state, thereby it is more stable to make the loading board support the supporting board, ensure to provide sufficient holding power when the welding.

As a further scheme of the invention, a sealing ring is fixedly connected to the outer side of the first base, and a reset elastic sheet is fixedly connected between the sealing ring and the first rotating shaft together; after the welding is accomplished, first reset spring promotes the portal rack and moves right, the portal rack passes through the upset of gear drive loading board upwards, because first reset spring elasticity is limited, the loading board can not reset completely, in operation, the loading board can hang down when not using, occupy the removal space, be not convenient for use, the loading board overturns downwards, the shell fragment that resets holds power, when the welding is accomplished, the backup pad moves left, first reset spring promotes the portal rack and moves right, the portal rack passes through the upset of gear drive loading board upwards, the shell fragment that resets rebounds simultaneously, drive the loading board and upwards overturn through first rotation axis, through first reset spring, and the shell fragment combined action that resets, ensure that the loading board can have enough power and upwards overturn, make the loading board can accomodate completely when non-operating condition, can withdraw from first side's pipe.

As a further scheme of the invention, first chutes are formed in the front side and the rear side of the support plate, the inner wall of each first chute is connected with a pushing block in a sliding manner, a third return spring is fixedly connected between the pushing block and the inner wall of the first chute, the right end of the pushing block is fixedly connected with an L-shaped connecting rod, the transverse end of the L-shaped connecting rod is in contact with the inner wall of the second square tube, two fourth bases are fixedly connected to the front side and the rear side of the support plate, an extension plate is rotatably connected between the two fourth bases, the bottom of the extension plate is in contact with the pushing block, and the extension plate is in contact with the top of the inner wall of the first square tube; during operation, the bearing area of backup pad is limited, thereby cause the supporting area not enough, be unfavorable for near the stable support of welding machine mouth, first side pipe opening is little, the inner space is big, light can't support the whole with the splice by the backup pad and live, the backup pad both sides do not obtain enough support, in operation, when backup pad and second side pipe inner wall contacted each other, thereby L shape connecting rod receives second side pipe inner wall extrusion and drives the extrusion piece and move left, the extrusion piece moves left and promotes the extension board and upwards overturn, and finally overturn under the effect of extrusion piece again and contact each other with first side pipe inner wall, thereby cooperation backup pad holds the splice completely, ensure when the welding, the splice of first side pipe and second side pipe can both be supported, thereby avoided lacking the problem that the support leads to welding quality unqualified.

As a further scheme of the invention, the bottom of the extension plate is fixedly connected with a synchronizing ring, the synchronizing ring is connected to the support plate in a sliding manner, the synchronizing ring is provided with a butt joint port, the left side of the transverse end of the L-shaped connecting rod is fixedly connected with a telescopic spring rod, and the extending end of the telescopic spring rod penetrates through the butt joint port; the during operation, it is less to the back state strong point of extension board upset, require too high to the strong point that promotes the piece, cause the damage that promotes the piece easily, the influence is supported, the extension board moves the synchronizer ring and rotates together, the extension spring pole stretches out the end and contacts mutually with the synchronizer ring, when accomplishing the upset along with the extension board, the extension spring pole stretches out the end and passes the butt joint, thereby block the synchronizer ring, avoid extending the board and automatic gyration after expanding, lead to the problem that the extension board can't support welding department, the extension spring pole blocks the synchronizer ring simultaneously and makes the extension board can better support welding department, improve the welding effect.

As a further scheme of the invention, a second base which is symmetrically distributed in the front and back direction is fixedly connected to the left side of the bearing plate, a third base which is symmetrically distributed in the front and back direction is slidably connected to the bottom of the supporting plate, a stabilizing plate is rotationally connected between the second base and the third base together, a containing groove which is symmetrically distributed in the front and back direction is formed in the bottom of the supporting plate, an inclined sliding groove is formed in the top of the containing groove, a sliding rod is rotationally connected to the inner wall of the inclined sliding groove, an auxiliary plate is rotationally connected to the surface of the sliding rod, the auxiliary plate is in contact with the bottom of the extending plate, an L-shaped connecting block is fixedly connected to the outer side of the third base, a lifting groove is formed in the transverse end of the L-shaped connecting block, and the sliding rod is in contact with the top of the lifting groove; the during operation, the supporting point position that promotes the piece to extension board is too close to border department, and the support area is less, be unfavorable for the stability of extension board, the loading board upset drives the third base through the stabilizing plate and moves right, the third base drives the continuous piece of L shape and moves right, the continuous piece of L shape drives the accessory plate through the slide bar and moves right along oblique spout, the accessory plate supports extension board from the bottom, ensure that extension board can tightly contact each other with the first party's inside pipe wall, further improve the support effect of extension board to welding point.

As a further scheme of the invention, the bottom of the extension plate and the front and back sides of the support plate are fixedly connected with heat dissipation plates, and the bottom of the support plate is fixedly connected with an air exhaust fan; the during operation, the backup pad, the expansion plate is managed and is managed in the side in close contact with second side, heat conduction is to the backup pad and the expansion plate when the welding on, can give off the heat on conducting backup pad and the expansion plate fast through setting up the heating panel, thereby cool down the welding position, avoid first side pipe and second side pipe welding position high temperature, the inside air flow of first side pipe is quickened to the rethread aspirating fan, with heat fast transfer to the outside, make the welding position can not be overheated, thereby avoided the pipeline thin risk of being heated excessively by the burn-through when the welding.

Compared with the prior art, the invention has the beneficial effects that:

1. through setting up the backup pad, the backup pad is after stretching into first side pipe, contact mutually when backup pad and second side pipe inner wall, the backup pad holds first side pipe and the welding department of second side pipe, it has the outrigger to make the welding be in the underneath when being welded, the loading board overturns downwards under the door-shaped rack effect this moment, support the backup pad right-hand member, avoided the backup pad to go deep into first side pipe overlength and leaded to the terminal unstable problem that can't play sufficient supporting role of backup pad, extrusion piece extrusion rubbing block moves down and contacts mutually with first side pipe inner wall, thereby increase the stability of loading board at vertical state, thereby it is more stable to make the loading board support the backup pad, ensure to provide sufficient holding power when the welding.

2. Through setting up the extension board, the extension board upwards overturns under the effect of extrusion piece, and the cooperation backup pad is whole to be supported the welding department, through setting up synchronizer ring and accessory plate, from a plurality of directions to firm extension board, ensures that the extension board can remain stable state, and the extension board can play the supporting role to the welding department when the welding, avoids because of supporting the problem that not enough leads to welding failure.

3. Can give off the heat on conducting the backup pad and the extension board fast through setting up the heating panel to cooling to the welding department, avoiding first side pipe and second side pipe welding department high temperature, the rethread is bled the fan and is accelerateed the inside air flow of first side pipe, with heat fast transfer to the outside, makes the welding department can not be overheated, thereby has avoided the pipeline to be crossed thin the risk of being heated excessively by burning through when the welding.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of a first general structure of the present invention;

FIG. 2 is a schematic diagram of a second general structure of the present invention (hiding the base, the first hydraulic cylinder, the third hydraulic cylinder, cutting the second square tube);

FIG. 3 is a third general structural diagram of the present invention (hidden base, first square tube, second square tube);

FIG. 4 is a fourth general structural diagram of the present invention (hiding the base, the first square tube, the second square tube, and cutting out part of the supporting plate);

FIG. 5 is an enlarged view taken at A in FIG. 4;

FIG. 6 is a schematic view of a fifth general structure of the present invention (hiding the base, the first square tube, the second square tube, and cutting out a part of the supporting plate);

FIG. 7 is a sixth general structural diagram of the present invention (hiding the base, the first square tube, the second square tube, and cutting out part of the supporting plate);

FIG. 8 is an enlarged view of FIG. 7 at B;

FIG. 9 is a seventh general structural diagram of the present invention (hiding the base, the first square tube, the second square tube, and cutting out part of the supporting plate);

FIG. 10 is a schematic view of a pushing block structure;

FIG. 11 is a schematic view of the attachment of the synchronizer ring to the support plate;

fig. 12 is an enlarged view at C in fig. 11.

In the drawings, the components represented by the respective reference numerals are listed below:

a base 1, a first hydraulic cylinder 2, a first hydraulic cylinder 3, a first clamp 4, a second clamp 5, a first square pipe 6, a second square pipe 7, a third hydraulic cylinder 8, a workbench 9, a welding robot 10, a support plate 11, a first base 12, a first rotating shaft 13, a bearing plate 14, a gear 15, a door-shaped rack 16, a first spring seat 17, a first return spring 18, a second base 19, a third base 20, a stabilizing plate 21, a track plate 22 and an extrusion block 23, the device comprises a friction block 24, a second spring seat 25, a second return spring 26, a sealing ring 27, a return elastic sheet 28, a first sliding groove 29, a pushing block 30, a third return spring 31, an L-shaped connecting rod 32, a fourth base 33, an extension plate 34, a synchronizing ring 35, a butt joint port 36, a telescopic spring rod 37, a containing groove 38, an inclined sliding groove 39, a sliding rod 40, an auxiliary plate 41, an L-shaped connecting block 42, a lifting groove 43, a heat dissipation plate 44 and an air suction fan 45.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-12, the present invention provides a technical solution: a welding manipulator suitable for pipeline welding comprises a base 1, wherein the top of the base 1 is fixedly connected with a first hydraulic cylinder 2 and a second hydraulic cylinder 3, the output end of the first hydraulic cylinder 2 is fixedly connected with a first clamp 4, the output end of the second hydraulic cylinder 3 is fixedly connected with a second clamp 5, a first square pipe 6 and a second square pipe 7 are placed on the top of the base 1, the first square pipe 6 and the second square pipe 7 are mutually spliced and clamped between the first clamp 4 and the second clamp 5, the top of the base 1 is fixedly connected with a third hydraulic cylinder 8, the output end of the third hydraulic cylinder 8 is fixedly connected with a workbench 9, and the top of the workbench 9 is fixedly connected with a welding robot 10;

the right side of the workbench 9 is fixedly connected with a supporting plate 11, the supporting plate 11 is mutually contacted with the top of the inner wall of a first square pipe 6, the supporting plate 11 is mutually contacted with the right side of the inner wall of a second square pipe 7, the bottom of the supporting plate 11 is fixedly connected with first bases 12 which are symmetrically distributed front and back, the two first bases 12 are jointly and rotatably connected with a first rotating shaft 13, the surface of the first rotating shaft 13 is fixedly connected with a bearing plate 14, the bearing plate 14 is mutually contacted with the bottom of the inner wall of the first square pipe 6, the surface of the first rotating shaft 13 is fixedly connected with a gear 15, the gear 15 is meshed with a door-shaped rack 16, the door-shaped rack 16 is slidably connected with the bottom of the supporting plate 11, the right end of the door-shaped rack 16 is mutually contacted with the inner wall of the second square pipe 7, the bottom of the supporting plate 11 is fixedly connected with a first spring seat 17 corresponding to the position of the door-shaped rack 16, and a first return spring 18 is jointly and fixedly connected between the first spring seat 17 and the left side of the door-shaped rack 16;

track plates 22 are fixedly connected to the front side and the rear side of the bearing plate 14, the track plates 22 are connected with extrusion blocks 23 in a sliding mode, the extrusion blocks 23 are in contact with the inner wall of the second square tube 7, a friction block 24 is connected to the right side of the bearing plate 14 in a sliding mode, the friction block 24 is in contact with the extrusion blocks 23, a second spring seat 25 is fixedly connected to the right side of the bearing plate 14, and a second return spring 26 is fixedly connected between the second spring seat 25 and the friction block 24;

when the welding manipulator works, the first square pipe 6 and the second square pipe 7 are spliced and placed on the base 1, the first hydraulic cylinder 2 and the second hydraulic cylinder 3 are started, so that the first clamp 4 and the second clamp 5 fix the spliced first square pipe 6 and the spliced second square pipe 7, the third hydraulic cylinder 8 is started, the workbench 9 drives the support plate 11 to enter the first square pipe 6 from the left side of the first square pipe 6, along with the continuous movement of the workbench 9, the support plate 11 drives the door-shaped rack 16 and the extrusion block 23 to contact with the inner wall of the second square pipe 7, the door-shaped rack 16 moves leftwards when being extruded, thereby driving the gear 15 to rotate anticlockwise, the gear 15 drives the bearing plate 14 to turn downwards through the first rotating shaft 13 and finally turn to a vertical state to contact with the top of the inner wall of the first square pipe 6, so as to support the right end of the support plate 11, the extrusion block 23 moves leftwards when being extruded, the extrusion friction block 24 moves downwards and finally contacts with the bottom of the inner wall of the first square pipe 6, thereby increasing the friction between the bearing plate 14 and the inner wall of the first square pipe 6, so that the bearing plate 14 is more stable in the vertical state, thereby the support plate 11 more stably supports the welding part of the first square pipe 6 and the second square pipe 7, by arranging the support plate 11, after the support plate 11 extends into the first square pipe 6, when the supporting plate 11 contacts with the inner wall of the second square pipe 7, the supporting plate 11 supports the welding position of the first square pipe 6 and the second square pipe 7, so that the welding position is stably supported at the bottom when being welded, at the moment, the supporting plate 14 is turned downwards under the action of the door-shaped rack 16 to support the right end of the supporting plate 11, the problem that the tail end of the supporting plate 11 cannot stably support due to the fact that the supporting plate 11 extends into the first square pipe 6 too long is solved, the squeezing block 23 squeezes the friction block 24 to move downwards to contact with the inner wall of the first square pipe 6, so that the stability of the supporting plate 14 in a vertical state is improved, the supporting of the supporting plate 14 on the supporting plate 11 is more stable, and sufficient supporting force can be provided when welding.

As a further aspect of the present invention, a sealing ring 27 is fixedly connected to the outer side of the first base 12, and a reset spring 28 is fixedly connected between the sealing ring 27 and the first rotating shaft 13; when welding is completed, the first return spring 18 pushes the door-shaped rack 16 to move rightwards, the door-shaped rack 16 drives the bearing plate 14 to turn upwards through the gear 15, the bearing plate 14 cannot be completely reset due to the limited elasticity of the first return spring 18, when the welding machine works, the bearing plate 14 hangs down when not in use, occupies a moving space and is inconvenient to use, the bearing plate 14 turns downwards, the reset elastic sheet 28 stores power, when welding is completed, the support plate 11 moves leftwards, the first return spring 18 pushes the door-shaped rack 16 to move rightwards, the door-shaped rack 16 drives the bearing plate 14 to turn upwards through the gear 15, meanwhile, the reset elastic sheet 28 rebounds, the bearing plate 14 is driven to turn upwards through the first rotating shaft 13, the first return spring 18 and the reset elastic sheet 28 jointly act to ensure that the bearing plate 14 can have enough power to turn upwards, so that the bearing plate 14 can be completely stored in a non-working state, can be withdrawn from the first square tube 6.

As a further scheme of the invention, the front side and the rear side of the support plate 11 are both provided with a first sliding chute 29, the inner wall of the first sliding chute 29 is connected with a pushing block 30 in a sliding manner, a third return spring 31 is fixedly connected between the pushing block 30 and the inner wall of the first sliding chute 29 together, the right end of the pushing block 30 is fixedly connected with an L-shaped connecting rod 32, the transverse end of the L-shaped connecting rod 32 is mutually contacted with the inner wall of the second square pipe 7, the front side and the rear side of the support plate 11 are both fixedly connected with two fourth bases 33, an extension plate 34 is rotatably connected between the two fourth bases 33 together, the bottom of the extension plate 34 is mutually contacted with the pushing block 30, and the extension plate 34 is mutually contacted with the top of the inner wall of the first square pipe 6; when the welding device works, the bearing area of the supporting plate 11 is limited, so that the supporting area is insufficient, the stable support near the opening of the welding machine is not facilitated, the opening of the first square tube 6 is small, the inner space is large, the welded part cannot be completely supported by the supporting plate 11, two sides of the supporting plate 11 are not sufficiently supported, when the supporting plate 11 is in contact with the inner wall of the second square tube 7, the L-shaped connecting rod 32 is extruded by the inner wall of the second square tube 7 to drive the extrusion block 23 to move leftwards, the extrusion block 23 moves leftwards to push the extension plate 34 to turn upwards, and finally the extension plate is turned to be in contact with the inner wall of the first square tube 6 under the action of the extrusion block 23, thereby cooperation backup pad 11 supports the splice completely, ensures that when the welding, the splice of first side pipe 6 and second side pipe 7 can both be supported to lack the problem that the support leads to welding quality unqualified has been avoided.

As a further scheme of the invention, the bottom of the extension plate 34 is fixedly connected with a synchronizing ring 35, the synchronizing ring 35 is connected to the support plate 11 in a sliding manner, the synchronizing ring 35 is provided with a butt joint port 36, the left side of the transverse end of the L-shaped connecting rod 32 is fixedly connected with an extension spring rod 37, and the extending end of the extension spring rod 37 penetrates through the butt joint port 36; the during operation, it is less to the back state strong point of extension board 34 upset, require too high to the strong point that promotes piece 30, cause the damage that promotes piece 30 easily, the influence is supported, extension board 34 drives synchronizer ring 35 and rotates together, telescopic spring rod 37 stretches out the end and contact each other with synchronizer ring 35, when accomplishing the upset along with extension board 34, telescopic spring rod 37 stretches out the end and passes interface 36, thereby block synchronizer ring 35, avoid extension board 34 to revolve automatically after expanding, lead to extension board 34 can't support the problem of welding department, telescopic spring rod 37 blocks synchronizer ring 35 simultaneously and makes extension board 34 can better support welding department, improve the welding effect.

As a further scheme of the invention, a second base 19 which is symmetrically distributed front and back is fixedly connected to the left side of the bearing plate 14, a third base 20 which is symmetrically distributed front and back is slidably connected to the bottom of the supporting plate 11, a stabilizing plate 21 is jointly and rotatably connected between the second base 19 and the third base 20, a containing groove 38 which is symmetrically distributed front and back is formed in the bottom of the supporting plate 11, an inclined sliding groove 39 is formed in the top of the containing groove 38, a sliding rod 40 is rotatably connected to the inner wall of the inclined sliding groove 39, an auxiliary plate 41 is rotatably connected to the surface of the sliding rod 40, the auxiliary plate 41 is mutually contacted with the bottom of the extension plate 34, an L-shaped connecting block 42 is fixedly connected to the outer side of the third base 20, a lifting groove 43 is formed in the transverse end of the L-shaped connecting block 42, and the sliding rod 40 is mutually contacted with the top of the lifting groove 43; during operation, the position of the supporting point of the extension plate 34 by the pushing block 30 is too close to the edge, and the supporting area is small, which is not beneficial to the stability of the extension plate 34, the bearing plate 14 is overturned to drive the third base 20 to move rightwards through the stabilizing plate 21, the third base 20 drives the L-shaped connecting block 42 to move rightwards, the L-shaped connecting block 42 drives the auxiliary plate 41 to move rightwards along the inclined chute 39 through the sliding rod 40, the auxiliary plate 41 supports the extension plate 34 from the bottom, it is ensured that the extension plate 34 can be tightly contacted with the inner wall of the first square tube 6, and the supporting effect of the extension plate 34 on the welding part is further improved.

As a further scheme of the invention, the bottom of the extension plate 34 and the front and back sides of the support plate 11 are fixedly connected with heat dissipation plates 44, and the bottom of the support plate 11 is fixedly connected with an air exhaust fan 45; the during operation, backup pad 11, extension board 34 and first side pipe 6 and second side pipe 7 in close contact with, heat conducts in the welding backup pad 11 and extends on board 34, can give off the heat on backup pad 11 and the extension board 34 with conducting through setting up heating panel 44 fast, thereby cool down the welding position, avoid first side pipe 6 and second side pipe 7 welding position high temperature, rethread suction fan 45 accelerates the inside air flow of first side pipe 6, with heat fast transfer to the outside, make the welding position can not be overheated, thereby avoided the pipeline thin risk of being heated excessively by the burn-through when the welding.

The working principle is as follows: when the welding manipulator works, a first square pipe 6 and a second square pipe 7 are spliced and placed on a base 1, a first hydraulic cylinder 2 and a second hydraulic cylinder 3 are started, so that a first clamp 4 and a second clamp 5 fix the spliced first square pipe 6 and the second square pipe 7, a third hydraulic cylinder 8 is started, the third hydraulic cylinder 8 pushes a workbench 9 to move rightwards, the workbench 9 drives a support plate 11 to enter the first square pipe 6 from the left side of the first square pipe 6, the support plate 11 drives a door-shaped rack 16 and an extrusion block 23 to be in contact with the inner wall of the second square pipe 7 along with the continuous movement of the workbench 9, the door-shaped rack 16 moves leftwards when being extruded, so as to drive a gear 15 to rotate anticlockwise, the gear 15 drives a bearing plate 14 to turn downwards through a first rotating shaft 13 and finally turn to a vertical state to be in contact with the top of the inner wall of the first square pipe 6, and supports the right end of the support plate 11, the extrusion block 23 moves leftwards when being extruded, the extrusion friction block 24 moves downwards and finally contacts with the bottom of the inner wall of the first square tube 6, so that the friction between the bearing plate 14 and the inner wall of the first square tube 6 is increased, the bearing plate 14 is more stable in a vertical state, the welding part of the first square tube 6 and the second square tube 7 is more stably supported by the support plate 11, after the support plate 11 extends into the first square tube 6, when the inner walls of the support plate 11 and the second square tube 7 contact with each other, the support plate 11 supports the welding part of the first square tube 6 and the second square tube 7, so that the stable support is arranged at the bottom of the welding part when the welding part is welded, at the moment, the bearing plate 14 turns downwards under the action of the door-shaped rack 16 to support the right end of the support plate 11, and the problem that the tail end of the support plate 11 is unstable and cannot play a sufficient support role as the support 11 is too long as the support plate 11 penetrates into the first square tube 6 is avoided, the pressing block 23 presses the friction block 24 to move downwards to contact with the inner wall of the first square tube 6, so that the stability of the bearing plate 14 in the vertical state is increased, the support of the bearing plate 14 on the support plate 11 is more stable, and sufficient supporting force can be provided during welding.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a be fit for pipeline welded welding machines hand, includes base (1), its characterized in that: the welding machine is characterized in that a first hydraulic cylinder (2) and a second hydraulic cylinder (3) are fixedly connected to the top of the base (1), a first clamp (4) is fixedly connected to the output end of the first hydraulic cylinder (2), a second clamp (5) is fixedly connected to the output end of the second hydraulic cylinder (3), a first square pipe (6) and a second square pipe (7) are placed on the top of the base (1), the first square pipe (6) and the second square pipe (7) are mutually spliced and clamped between the first clamp (4) and the second clamp (5), a third hydraulic cylinder (8) is fixedly connected to the top of the base (1), a workbench (9) is fixedly connected to the output end of the third hydraulic cylinder (8), and a welding robot (10) is fixedly connected to the top of the workbench (9);

the right side of the workbench (9) is fixedly connected with a supporting plate (11), the supporting plate (11) is in contact with the top of the inner wall of a first square tube (6), the supporting plate (11) is in contact with the right side of the inner wall of a second square tube (7), the bottom of the supporting plate (11) is fixedly connected with first bases (12) which are symmetrically distributed front and back, the two first bases (12) are jointly and rotatably connected with a first rotating shaft (13), the surface of the first rotating shaft (13) is fixedly connected with a bearing plate (14), the bearing plate (14) is in contact with the bottom of the inner wall of the first square tube (6), the surface of the first rotating shaft (13) is fixedly connected with a gear (15), the gear (15) is meshed with a door-shaped rack (16), the door-shaped rack (16) is slidably connected to the bottom of the supporting plate (11), and the right end of the door-shaped rack (16) is in contact with the inner wall of the second square tube (7), a first spring seat (17) is fixedly connected to the bottom of the supporting plate (11) corresponding to the position of the door-shaped rack (16), and a first return spring (18) is fixedly connected between the first spring seat (17) and the left side of the door-shaped rack (16);

equal fixedly connected with track board (22) in both sides around loading board (14), track board (22) sliding connection has extrusion piece (23), extrusion piece (23) and second side pipe (7) inner wall contact each other, loading board (14) right side sliding connection has clutch blocks (24), clutch blocks (24) and extrusion piece (23) contact each other, loading board (14) right side fixedly connected with second spring holder (25), common fixedly connected with second reset spring (26) between second spring holder (25) and clutch blocks (24).

2. A welding manipulator suitable for pipe welding according to claim 1, wherein: the outer side of the first base (12) is fixedly connected with a sealing ring (27), and a resetting elastic sheet (28) is fixedly connected between the sealing ring (27) and the first rotating shaft (13) together.

3. A welding manipulator suitable for pipe welding according to claim 1, wherein: first spout (29) have all been seted up to both sides around backup pad (11), first spout (29) inner wall sliding connection has and promotes piece (30), promote common fixedly connected with third reset spring (31) between piece (30) and first spout (29) inner wall, promote piece (30) right-hand member fixedly connected with L shape connecting rod (32), the horizontal end of L shape connecting rod (32) contacts with each other with second side pipe (7) inner wall, two fourth base (33) of the equal fixedly connected with in both sides around backup pad (11), two rotate jointly between fourth base (33) and be connected with extension board (34), extension board (34) bottom contacts with each other with promotion piece (30), extension board (34) contact with each other with first side pipe (6) inner wall top.

4. A welding manipulator suitable for pipe welding according to claim 3, wherein: extend panel (34) bottom fixedly connected with synchronizing ring (35), synchronizing ring (35) sliding connection is on backup pad (11), dock (36) have been seted up on synchronizing ring (35), horizontal end left side fixedly connected with extension spring pole (37) of L shape connecting rod (32), extension spring pole (37) stretch out the end and pass dock (36).

5. A welding manipulator suitable for pipe welding according to claim 3, wherein: the left side of the bearing plate (14) is fixedly connected with second bases (19) which are symmetrically distributed front and back, the bottom of the supporting plate (11) is connected with third bases (20) which are symmetrically distributed front and back in a sliding way, a stabilizing plate (21) is connected between the second base (19) and the third base (20) in a co-rotating way, the bottom of the supporting plate (11) is provided with storage grooves (38) which are symmetrically distributed front and back, an inclined sliding groove (39) is formed in the top of the accommodating groove (38), a sliding rod (40) is rotatably connected to the inner wall of the inclined sliding groove (39), the surface of the sliding rod (40) is rotatably connected with an auxiliary plate (41), the auxiliary plate (41) is mutually contacted with the bottom of the extension plate (34), the outer side of the third base (20) is fixedly connected with an L-shaped connecting block (42), a lifting groove (43) is formed in the transverse end of the L-shaped connecting block (42), and the tops of the sliding rod (40) and the lifting groove (43) are in contact with each other.

6. A welding manipulator suitable for pipe welding according to claim 1, wherein: the equal fixedly connected with heating panel (44) in both sides around extension board (34) bottom and backup pad (11), backup pad (11) bottom fixedly connected with air exhaust fan (45).