CN114406419A

CN114406419A - Automatic welding system for large steel box girder

Info

Publication number: CN114406419A
Application number: CN202210166158.0A
Authority: CN
Inventors: 黎治国; 董志卫; 谢亮
Original assignee: Third Engineering Co Ltd Of Cccc Third Highway Engineering Co ltd
Current assignee: Third Engineering Co Ltd Of Cccc Third Highway Engineering Co ltd
Priority date: 2022-02-23
Filing date: 2022-02-23
Publication date: 2022-04-29
Anticipated expiration: 2042-02-23
Also published as: CN114406419B

Abstract

The invention discloses an automatic welding system for a large steel box girder in the technical field of submerged-arc welding. The automatic mechanical arm comprises a full-automatic operation machine arm, wherein the tail end of the automatic mechanical arm is provided with a welding carrier capable of being adjusted in angle and rotated by the automatic mechanical arm, and the top of the welding carrier is provided with a welding wire box used for loading welding wires and a gravity adjusting assembly used for loading welding flux. The welding carrier is including installing the mounting disc at the automation mechanical arm end, two extension arms that the symmetry set up are installed in the outside of mounting disc, two welding wire pipe and solder flux pipe are installed respectively to the outer end of extension arm. The automatic mechanical arm replaces manpower, and the efficiency of welding the large steel box girder is improved. Utilize gravity adjusting part to keep the decurrent effect of focus for when arm drive welding carrier motion, let the distance of the tip mouth of pipe of welding flux pipe and the discharge spout of funnel change, concertina movement appears in the bellows, avoids the welding flux to block up.

Description

Automatic welding system for large steel box girder

Technical Field

The invention relates to the technical field of submerged arc welding, in particular to an automatic welding system for a large steel box girder.

Background

The steel box girder is also called steel plate box girder, and is a common structural form of a large-span bridge. The steel box girder is generally used on bridges with large span and is called as a steel box girder because the steel box girder is shaped like a box. The steel box girder is generally formed by connecting a top plate, a bottom plate, a web plate, a transverse clapboard, a longitudinal clapboard, a stiffening rib and the like in a full welding mode.

Submerged arc welding (including submerged arc welding, electroslag welding, and the like) is a method in which an electric arc is burned under a flux layer to perform welding. The welding method has the advantages of stable inherent welding quality, high welding productivity, no arc light, little smoke and the like, and becomes a main welding method in the manufacture of important steel structures such as pressure vessels, pipe sections, box-type beam columns and the like.

Because the plate bodies of the top plate, the bottom plate and the web plate of the large-sized steel box girder are large, and the transverse partition plates, the longitudinal partition plates and the stiffening ribs are large in quantity, the manual full welding is time-consuming and labor-consuming. Therefore, how to improve the welding efficiency of the large steel box girder becomes a problem which needs to be solved urgently in large steel box girder engineering.

Based on the technical scheme, the invention designs an automatic welding system for the large steel box girder to solve the problems.

Disclosure of Invention

The invention aims to provide an automatic welding system for a large steel box girder, which aims to solve the problems that the plate bodies of a top plate, a bottom plate and a web plate of the large steel box girder are large, and the quantity of transverse partition plates, longitudinal partition plates and stiffening ribs is large, so that manual full welding is time-consuming and labor-consuming.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a large-scale steel box roof beam automatic weld system, includes the automatic arm of a full automatic operation, the end of automatic arm is installed and is carried out angle modulation and pivoted welding carrier by automatic arm, the welding wire case that is used for packing into the welding wire and the gravity adjustment subassembly that is used for packing into the solder flux are installed to the top of welding carrier.

The welding carrier is including installing the mounting disc at the automation mechanical arm end, two extension arms that the symmetry set up are installed in the outside of mounting disc, two welding wire pipe and solder flux pipe are installed respectively to the outer end of extension arm.

The gravity adjustment assembly includes a bracket for mounting atop the weld carrier and a funnel for delivering flux to a lumen of a flux conduit.

Preferably, a motor for driving the mechanical joint of the automatic mechanical arm to move is arranged at the mechanical joint of the automatic mechanical arm, and a rotating shaft capable of driving the mounting disc to rotate is arranged at the tail end of the automatic mechanical arm.

Preferably, the mounting disc is a circular ring-shaped block, and a ring cavity of the mounting disc is fixedly sleeved on a shaft body of a rotating shaft at the tail end of the automatic mechanical arm.

Preferably, the extending arms are straight rod-shaped arm bodies, and the inner ends of the two extending arms are fixedly mounted on the circumferential bottom wall of the mounting disc respectively.

Preferably, the welding wire guide pipe and the welding flux guide pipe are straight pipes with openings at the upper end and the lower end, and the inner diameter of the welding flux guide pipe is larger than that of the welding wire guide pipe.

Preferably, the welding wire box comprises a circular groove-shaped box body used for loading a welding wire disc, a box cover covers the top of the box body, and a box handle used for installing the welding wire box on the top of the welding carrier is fixedly installed on the circumferential side wall of the box body.

Preferably, the bottom wall of the box body is provided with a wire outlet communicated with the groove cavity of the box body, the wire outlet is aligned with the top end pipe orifice of the welding wire guide pipe, and the groove cavity of the box body is provided with a welding wire guide wheel used for guiding the welding wire out of the wire outlet.

Preferably, the outer end of the support is in a U-shaped frame shape, and the inner end of the support is fixedly installed at the top of the welding carrier.

Preferably, the middle part and the upper portion of funnel are the straight tubulose of circle, the bottom of funnel is hourglass hopper-shaped, the outer pipe wall welding of middle part of funnel has two hinge posts that are bilateral symmetry and set up, the discharge spout department fixed mounting of funnel has the bellows, the bottom wall welding of funnel has the round to be the annular counterweight ring of circle. The top nozzle of the funnel is fixedly provided with a pipeline for supplying the flux to the funnel.

Preferably, the two hinge columns are hinged to the frame bodies on the left side and the right side of the support respectively, and the bottom end pipe orifice of the corrugated pipe is fixedly installed at the top end pipe orifice of the welding flux guide pipe.

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

according to the invention, the automatic mechanical arm replaces manpower, so that the efficiency of welding the large steel box girder is improved. In addition, utilize gravity adjusting part to keep the downward effect of focus for when arm drive welding carrier motion, let the distance of the tip mouth of pipe of welding flux pipe and the discharge spout of funnel change, thereby make the concertina movement appear in the bellows, avoid the welding flux to block up.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

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 structural view of the present invention;

FIG. 2 is a schematic view of the weld carrier of the present invention;

FIG. 3 is a schematic view of the construction of the welding wire case of the present invention;

fig. 4 is a schematic structural diagram of the gravity adjusting assembly of the present invention.

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

100-an automated robotic arm;

200-welding carrier, 210-mounting plate, 220-extending arm, 230-wire guide, 240-flux guide;

300-a welding wire box, 310-a box body, 311-a wire outlet, 320-a box cover and 330-a box handle;

400-gravity adjustment assembly, 410-bracket, 420-funnel, 421-hinge post, 422-bellows, 423-counterweight ring.

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. 1-4, the present invention provides an automatic welding system for large steel box girders, which comprises a fully-automatic robot arm 100, a welding carriage 200 mounted at the end of the robot arm 100, a welding wire box 300 mounted on the top of the welding carriage 200 for loading welding wire and a gravity adjusting assembly 400 for loading flux.

In the present invention, a motor for driving the mechanical joint of the robot arm 100 is provided at the mechanical joint of the robot arm 100. The tail end of the automatic mechanical arm 100 is provided with a cylindrical rotating shaft which can rotate around the axis line of the automatic mechanical arm, and the arm body at the tail end of the automatic mechanical arm 100 can drive the rotating shaft to perform angle adjustment.

In the present invention, the welding carriage 200 includes a mounting plate 210 in the form of a circular ring-shaped block, two extension arms 220 in the form of straight rods, a straight tubular welding wire conduit 230 with openings at upper and lower ends, and a straight tubular flux conduit 240 with openings at upper and lower ends.

The ring cavity of the mounting plate 210 is fixedly sleeved on the shaft body of the rotating shaft at the extreme end of the robot arm 100, so that the rotating shaft at the extreme end of the robot arm 100 drives the mounting plate 210 to rotate. The two extending arms 220 are symmetrically arranged and form an included angle. The inner ends of the two extending arms 220 are fixedly mounted on the circumferential bottom wall of the mounting plate 210. The welding wire guide tube 230 and the flux guide tube 240 are respectively installed at the outer ends of the two extending arms 220, and the inner diameter of the body of the flux guide tube 240 is larger than that of the body of the welding wire guide tube 230.

Wherein, the disk body of mounting disc 210 and the arm body of extending arm 220 all offer the bolt hole that is used for installing welding wire case 300 and gravity adjustment assembly 400.

In the present invention, the welding wire case 300 includes a case body 310 having a circular groove shape, a case cover 320 covering the top of the case body 310, and a case handle 330 fixedly welded to the circumferential side wall of the case body 310.

The bottom wall of the box body 310 is provided with a wire outlet 311 communicated with the groove cavity of the box body 310, and the wire outlet 311 is aligned with the top nozzle of the wire guide 230. The cavity of housing 310 houses a wire reel and wire guide wheel for guiding the wire out of wire outlet 311.

Through holes for inserting bolts are formed in the handle body of the box handle 330, the through holes in the box handle 330 are aligned with the bolt holes formed in the disk body of the mounting disk 210 and the arm body of the extending arm 220, the bolts are screwed up and tightened, and the welding wire box 300 can be fixedly mounted on the welding carrier 200.

In the present invention, the gravity adjustment assembly 400 includes a bracket 410 and a funnel 420.

The inner end rod body of the bracket 410 is provided with a through hole for inserting a bolt, the through hole on the inner end rod body of the bracket 410 is respectively aligned with the bolt holes arranged on the disk body of the mounting disk 210 and the arm body of the extension arm 220, then the bolt is screwed, and the bolt is screwed, so that the bracket 410 can be fixedly mounted on the welding carrier frame 200. In addition, the outer end of the bracket 410 is in a U-shaped frame shape, and two legs of the U-shaped frame body are provided with hinge holes for mutually hinging with the funnel 420.

The middle part and the upper portion of funnel 420 are the straight tubular of circle, and the bottom of funnel 420 is leaks hopper-shaped, and the outer pipe wall welding in middle part of funnel 420 has two hinge posts 421 that are bilateral symmetry and set up, and the spout department fixed mounting of funnel 420 has bellows 422, and the bottom wall welding of funnel 420 has the round to be annular counter weight ring 423. The top nozzle of the hopper 420 is fixedly provided with a pipe for supplying the flux from the hopper 420. The two hinge posts 421 are hinged to the frame bodies on the left and right sides of the support 410, respectively, and the bottom end orifice of the bellows 422 is fixedly installed at the top end orifice of the flux guide tube 240.

Wherein, the other nozzle of the pipeline for supplying the welding flux, which is communicated with the nozzle at the top end of the funnel 420, is installed on the leakage opening of the external welding flux box, so that the welding flux in the external welding flux box enters the hopper cavity of the funnel 420 through the leakage opening and the pipeline communicated with the leakage opening. Flux then enters the flux conduit 240 through the bellows 422, and the bottom nozzle of the flux conduit 240 leaks out to the weld of the work piece to be welded. The bottom nozzle of the flux guide 240 is moved along the weld of the work piece to be welded under the control of the robotic arm 100 to fill the weld with flux. And the wire guide 230 follows behind the flux guide 240 under the control of the robot arm 100 along the weld filled with flux, the bottom end of the wire in the wire guide 230 being inserted into the flux at the weld. Thus, the workpieces to be welded can be welded by adopting a submerged arc welding mode.

The automatic mechanical arm replaces manpower, and the efficiency of welding the large steel box girder is improved. In addition, utilize gravity adjusting part to keep the downward effect of focus for when arm drive welding carrier motion, let the distance of the tip mouth of pipe of welding flux pipe and the discharge spout of funnel change, thereby make the concertina movement appear in the bellows, avoid the welding flux to block up.

In the foregoing, exemplary embodiments of the proposed solution have been described in detail with reference to preferred embodiments, however, it will be understood by those skilled in the art that many variations and modifications may be made to the specific embodiments described above, and that many combinations of the various features and structures presented in the present invention may be made without departing from the inventive concept, the scope of which is defined by the appended claims.

Claims

1. The utility model provides a large-scale steel box girder automatic weld system, includes automatic mechanical arm (100) of a full-automatic operation, its characterized in that: the tail end of the automatic mechanical arm (100) is provided with a welding carrier (200) which can be angularly adjusted and rotated by the automatic mechanical arm (100), and the top of the welding carrier (200) is provided with a welding wire box (300) used for loading welding wires and a gravity adjusting assembly (400) used for loading welding flux;

the welding carrier (200) comprises a mounting disc (210) arranged at the tail end of an automatic mechanical arm (100), two symmetrically arranged extension arms (220) are arranged on the outer side of the mounting disc (210), and a welding wire guide pipe (230) and a welding flux guide pipe (240) are respectively arranged at the outer ends of the two extension arms (220);

the gravity adjustment assembly (400) includes a bracket (410) for mounting on top of a weld carrier (200) and a funnel (420) for delivering flux to a lumen of a flux conduit (240).

2. The automatic welding system for the large steel box girder according to claim 1, wherein: the automatic mechanical arm is characterized in that a motor used for driving the mechanical joint of the automatic mechanical arm (100) to move is arranged at the mechanical joint of the automatic mechanical arm (100), and a rotating shaft capable of driving the mounting disc (210) to rotate is arranged at the tail end of the automatic mechanical arm (100).

3. The automatic welding system for the large steel box girder according to claim 2, wherein: the mounting disc (210) is a circular block, and a circular cavity of the mounting disc (210) is fixedly sleeved on a shaft body of a rotating shaft at the tail end of the automatic mechanical arm (100).

4. The automatic welding system for the large steel box girder according to claim 3, wherein: the extending arms (220) are straight rod-shaped arm bodies, and the inner ends of the two extending arms (220) are fixedly mounted on the circumferential bottom wall of the mounting disc (210) respectively.

5. The automatic welding system for the large steel box girder according to claim 1, wherein: the welding wire guide pipe (230) and the welding flux guide pipe (240) are both straight pipes with openings at the upper end and the lower end, and the inner diameter of the welding flux guide pipe (240) is larger than that of the welding wire guide pipe (230).

6. The automatic welding system for the large steel box girder according to claim 5, wherein: the welding wire box (300) comprises a circular groove-shaped box body (310) used for loading a welding wire coil, the top of the box body (310) is covered with a box cover (320), and a box handle (330) used for installing the welding wire box (300) on the top of the welding carrier (200) is fixedly installed on the circumferential side wall of the box body (310).

7. The automatic welding system for the large steel box girder according to claim 6, wherein: the bottom wall of the box body (310) is provided with a wire outlet (311) communicated with the groove cavity of the box body (310), the wire outlet (311) is aligned with the top end pipe orifice of the welding wire guide pipe (230), and the groove cavity of the box body (310) is provided with a welding wire guide wheel used for guiding the welding wire out of the wire outlet (311).

8. The automatic welding system for the large steel box girder according to claim 1, wherein: the outer end of the support (410) is in a U-shaped frame shape, and the inner end of the support (410) is fixedly installed at the top of the welding carrier (200).

9. The automatic welding system for the large steel box girder according to claim 8, wherein: the middle part and the upper part of the funnel (420) are in a circular straight tube shape, the bottom of the funnel (420) is in a funnel shape, two hinge columns (421) which are arranged in bilateral symmetry are welded on the outer pipe wall of the middle part of the funnel (420), a corrugated pipe (422) is fixedly installed at a discharge spout of the funnel (420), and a circle of circular-ring-shaped counterweight ring (423) is welded on the wall surface of the bottom of the funnel (420);

the top nozzle of the funnel (420) is fixedly provided with a pipeline used for supplying the flux to the funnel (420).

10. The automatic welding system for the large steel box girder according to claim 9, wherein: the two hinge columns (421) are hinged to the frame bodies on the left side and the right side of the support (410) respectively, and the bottom end pipe orifice of the corrugated pipe (422) is fixedly installed at the top end pipe orifice of the welding flux guide pipe (240).