CN204584596U - A kind of U rib welding system - Google Patents

Abstract

The utility model discloses a U-rib welding system, which comprises a main frame and a plurality of U-rib welding devices; the U-rib welding device comprises: a mobile platform capable of moving inside the U-rib to be welded, which is set on the mobile platform and enters the inside of the U-rib The welding mechanism for welding is the driving mechanism for driving the mobile platform; multiple U-rib welding devices are arranged side by side in the main frame, and the main frame synchronously drives each driving mechanism. The U-rib welding device can directly weld from the inside of the U-rib, which can ensure the welding quality of the weld inside the U-rib. At the same time, the U-rib welding system includes multiple U-rib welding devices, which are synchronously driven by the main frame and can weld multiple U-ribs at the same time. A U rib greatly improves the welding efficiency.

Description

A U rib welding system

technical field

The utility model relates to the field of bridge engineering, in particular to a U rib welding system.

Background technique

Steel box girder is an important part of bridge load-bearing structure, mainly used to provide support and avoid bridge deformation. The steel box girder generally includes structures such as a top plate and a bottom plate, and the top plate and the bottom plate are generally welded by U ribs and the bottom plate.

At present, the fillet welds between the U ribs of the steel box girder and the bottom plate are all welded on one side externally. When welding from the outside, in order to achieve the penetration depth required by the design, the outer side of the U rib is usually grooved or welded with a high current. When high-current welding is used, the stability of the current, voltage and welding speed in the welding process directly affects the welding quality, and it is difficult to guarantee the welding quality; The gap is difficult to be consistent and will directly affect the welding quality. The above-mentioned welding methods often cause various defects such as incomplete penetration, infusion, weld bumps, and penetration depths in the U rib, which make the U rib prone to open defects and seriously affect the fatigue strength of the weld.

In engineering applications, there is a great demand for the use of U-rib units. How to avoid the weld defects of U-rib, improve the welding quality of the weld, and improve the welding efficiency is a technical problem urgently needed by those skilled in the art. .

Utility model content

The purpose of this utility model is to provide a U-rib welding system, which can weld the corner joints inside the U-rib, avoid the weld defects inside the U-rib, improve the welding quality of the weld, and has a relatively High welding efficiency.

In order to achieve the above technical purpose, the utility model provides a U-rib welding system, including a main frame and a plurality of U-rib welding devices; the U-rib welding device includes: a mobile platform capable of moving inside the U-rib to be welded, set Enter the welding mechanism for welding inside the U-rib on the mobile platform, and drive the driving mechanism for moving the mobile platform; multiple U-rib welding devices are arranged side by side in the main frame, and the main frame is synchronously driven Each of the drive mechanisms.

Optionally, the main frame includes a track and a gantry, the gantry moves along the track, the gantry is connected to each of the driving mechanisms, limit switches and anti-collision devices are provided at both ends of the track.

Optionally, on the track, sensors are respectively provided at the start position and end position of the movement of the gantry, so as to send a stop signal when the gantry is detected; alarms are respectively provided at both ends of the track.

Optionally, the gantry is driven by electric or pneumatic means.

Optionally, each of the drive mechanisms is detachably connected to the gantry frame, and the distance between each of the drive mechanisms is adjustable.

Optionally, the driving mechanism includes a driving guide rod, and the height of the driving guide rod relative to the bottom of the main frame is adjustable.

Optionally, the driving guide rod is located on the lower side of the mobile platform, and is connected with the mobile platform for anti-vibration.

Optionally, the driving guide rod is connected to the mobile platform through a flexible universal joint, or a buffer gap is provided at the connection between the two.

Optionally, the welding mechanism includes at least one welding torch, and the head of the welding torch is located at the front end of the mobile platform; when the welding mechanism welds the corner joint of the U rib, the driving mechanism drives The mobile platform moves backwards.

Optionally, the welding mechanism includes two symmetrically arranged welding torches, the heads of which are respectively located on both sides of the mobile platform, and can respectively weld the corner seams on both sides inside the U rib place.

The U-rib welding system provided by the utility model includes a main frame and a plurality of U-rib welding devices; the U-rib welding device includes: a mobile platform that can move inside the U-rib to be welded, and is set on the mobile platform to enter the U-rib for welding. The welding mechanism is a driving mechanism that drives the moving platform; multiple U-rib welding devices are arranged side by side in the main frame, and the main frame synchronously drives each driving mechanism.

The U-rib welding device can directly weld from the inside of the U-rib, which can ensure the welding quality of the weld inside the U-rib, avoid defects such as incomplete penetration, lack of fusion, and insufficient penetration depth that are easy to occur when welding from the outside, and improve the quality of the weld. Excellent welding quality, so that the U-rib and the cover plate are welded into a more stable U-rib unit. At the same time, the U-rib welding system includes multiple U-rib welding devices, which are synchronously driven by the main frame and can weld multiple U-ribs at the same time, greatly improving the welding efficiency.

The welding device in this welding system adopts a new welding method according to the structural characteristics of the U rib, which can not only ensure the structural strength of the U rib, but also ensure the welding quality, avoid the weld defects of the U rib, and improve The welding quality of the weld seam is improved, and the welding efficiency is improved.

Description of drawings

The accompanying drawings are used to provide a further understanding of the utility model, and constitute a part of the description, together with the following specific embodiments, are used to explain the utility model, but do not constitute a limitation to the utility model.

Fig. 1 is a structural schematic diagram of a U-rib welding device in a U-rib welding system provided by an embodiment of the present invention;

Wherein, the corresponding relationship between the reference numerals and component names in Fig. 1 is as follows:

Welding mechanism 1; welding torch 11; mobile platform 2.

Detailed ways

The specific embodiment of the utility model will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the utility model, and are not intended to limit the utility model.

Please refer to FIG. 1 , which is a schematic structural diagram of a U-rib welding device in a U-rib welding system provided by an embodiment of the present invention.

In a specific embodiment, the utility model provides a U-rib welding system, including a main frame and a plurality of U-rib welding devices; the U-rib welding device includes: a mobile platform 2 capable of moving inside the U-rib to be welded , the welding mechanism 1 that is installed on the mobile platform 2 and enters the welding inside the U-rib, and the driving mechanism that drives the mobile platform 2 to move; multiple U-rib welding devices are arranged side by side in the main frame, and the main frame synchronously drives each driving mechanism.

When using the U-rib welding system, the mobile platform 2 of the U-rib welding device is placed inside the U-rib, and the driving mechanism drives the mobile platform 2 to move inside the U-rib. During the movement, the welding mechanism 1 welds the corners from the inside of the U-rib. seams.

The welding mechanism 1 can directly weld from the inside of the U-rib to ensure the welding quality of the weld seam inside the U-rib, avoid defects such as incomplete penetration, lack of fusion, and insufficient penetration depth that are likely to occur when welding from the outside, and improve the weld quality. The welding quality makes the U-rib and the cover plate welded into a more stable U-rib unit, making the U-rib unit less prone to cracks and deformation due to external forces.

At the same time, the U-rib welding system includes multiple U-rib welding devices, which are synchronously driven by the main frame and can weld multiple U-ribs at the same time, greatly improving the welding efficiency.

The welding device in this welding system adopts a new welding method according to the structural characteristics of the U rib, which not only avoids the weld defect of the U rib, improves the welding quality of the weld, but also improves the welding efficiency.

Further, the main frame includes rails and a gantry frame, the gantry frame moves along the rails, the gantry frame is connected to each driving mechanism, limit switches and anti-collision devices are provided at both ends of the rails.

First set up the track of the main frame, each U-rib is parallel to the track, each driving mechanism drives each mobile platform 2 to enter the inside of the U-rib, and each driving mechanism is connected to the gantry. When the U-rib welding system is working, the gantry moves along the track. When walking, drive each driving mechanism to drive the mobile platform 2 to move at the same time, so that each welding mechanism 1 works at the same time.

When the gantry walks along the track, it can control the walking speed, make the walking continuous and stable, and ensure the stability of the welding mechanism 1 during the welding process. The start position and end position of the end of the track are respectively equipped with limit switches to limit the movement range of the gantry .

In a specific embodiment, sensors are respectively provided at the start position and the end position of the movement of the gantry on the track, so as to send a stop signal when the gantry is detected; alarms are respectively provided at both ends of the track.

When the gantry moves to the starting position or the end position, it can be detected by the sensor, which sends a signal to stop the movement, and then controls the gantry to stop smoothly. If the gantry does not stop in time, when the gantry moves to the two ends of the track, it will touch the alarm to prevent the gantry from falling off the track. At the same time, anti-collision devices can also be installed at both ends of the track.

Specifically, the gantry can be driven electrically or pneumatically, and two driving modes can also be set at the same time, and a manual driving mode can be set, and the manual driving mode can be set when the circuit system fails.

Further, each drive mechanism is detachably connected to the gantry frame, and the distance between each drive mechanism is adjustable. The connection between each driving mechanism and the main frame is set in a form that can slide left and right, and can be locked and disassembled. The distance between each U-rib welding device can be adjusted according to the needs of the U-rib model.

In the above embodiments, the driving mechanism includes a driving guide rod, and the height of the driving guide rod relative to the bottom of the main frame is adjustable.

The driving guide rod can be driven by mechanisms such as a motor, an air cylinder or a ball screw, and the height of the driving guide rod is adjustable. The height of the driving guide rod can be adjusted according to the thickness of the base plate, so that the welding mechanism can adapt to base plates of different thicknesses.

Further, the driving guide rod is located on the lower side of the mobile platform 2, and is connected with the mobile platform 2 for anti-shake.

The driving guide rod is connected to the mobile platform 2 for anti-vibration, and the vibration and vibration generated during the movement of the driving guide rod will not be transmitted to the mobile platform 2 and will not affect the welding quality of the welding mechanism 1 .

Specifically, the driving guide rod is connected to the mobile platform 2 through a flexible universal joint, or a buffer gap is provided at the connection between the two. Both the flexible universal joint and the buffer gap can absorb the jitter and vibration during the movement of the driving guide rod, so that the mobile platform 2 can always run smoothly without affecting the welding process of the welding mechanism 1 .

The inside of the driving guide rod can be a hollow structure, and the pipeline of the welding mechanism is arranged. During the welding process of the welding mechanism, various systems need to cooperate with each other, including the wire feeding system and the gas supply system;

In each of the above-mentioned embodiments, the welding mechanism 1 includes at least one welding torch 11, and the head of the welding torch 11 is positioned at the front end of the mobile platform 2; after moving.

In this embodiment, the "front" indicates the direction of the start position of welding compared to the end position, and "rear" indicates the direction of the end position of welding compared to the start position.

During the welding process, the moving direction of the mobile platform 2 is gradually away from the welding position, which can avoid the occurrence of sparks and smoke generated during welding on the moving path of the mobile platform 2, and avoid the sparks and smoke generated by various components of the welding mechanism 1 due to welding. And damage, prolong the service life of welding mechanism 1.

In a preferred embodiment, the welding mechanism 1 includes two symmetrically arranged welding torches 11, the heads of which are respectively located on both sides of the mobile platform 2, and can weld the corner joints on both sides of the U-rib at the same time.

In this structure, during the movement of the mobile platform 2, the two welding torches 1 can simultaneously weld the corner joints on both sides of the U-rib, and the mobile platform 2 can complete the welding of the two welds inside the U-rib unit by moving once. , improve welding efficiency.

It can be understood that, the above embodiments are only exemplary embodiments adopted to illustrate the principles of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present utility model, and these variations and improvements are also regarded as the protection scope of the present utility model.

Claims (10)

1. a U rib welding system, is characterized in that, comprises mainframe and multiple U rib welder; Described U rib welder comprises: can at the mobile platform (2) of the inner movement of U rib to be welded, be arranged on the welding mechanism (1) described mobile platform (2) entering described U rib interior welds, drive the driving mechanism of described mobile platform (2) movement; Multiple described U rib welder is disposed in parallel in described mainframe, and described mainframe synchronously drives each described driving mechanism.

2. U rib welding system as claimed in claim 1, it is characterized in that, described mainframe comprises track and portal frame, and described portal frame is along described rail moving, described portal frame connects each described driving mechanism, and the two ends of described track are provided with limit switch and anticollision device, collision-prevention device.

3. U rib welding system as claimed in claim 2, it is characterized in that, on described track, original position and the final position of described portal frame movement are respectively equipped with sensor, to send stop signal when described portal frame being detected; The two ends of described track are respectively equipped with alarm.

4. U rib welding system as claimed in claim 3, it is characterized in that, described portal frame is driven by electronic or pneumatic mode.

5. U rib welding system as claimed in claim 4, it is characterized in that, each described driving mechanism and described portal frame removably connect, and the spacing of each described driving mechanism is adjustable.

6. the U rib welding system as described in any one of claim 1 to 5, it is characterized in that, described driving mechanism comprises drive leader, and described drive leader is relative to the height adjustable of the bottom of described mainframe.

7. U rib welding system as claimed in claim 6, is characterized in that, described drive leader is positioned at described mobile platform (2) downside, is connected with described mobile platform (2) stabilization.

8. U rib welding system as claimed in claim 7, it is characterized in that, described drive leader is connected by rubber universal joint with described mobile platform (2), or establishes buffer gap in the junction of the two.

9. the U rib welding system as described in any one of claim 1 to 5, it is characterized in that, described welding mechanism (1) comprises at least one welding gun (11), and the head of described welding gun (11) is positioned at the front end of described mobile platform (2); When the angle seam crossing of described welding mechanism (1) to described U rib welds, described driving mechanism drives described mobile platform (2) to move backward.

10. U rib welding system as claimed in claim 9, it is characterized in that, described welding mechanism (1) comprises two symmetrically arranged described welding guns (11), the described head of the two lays respectively at the both sides of described mobile platform (2), can weld the angle seam crossing of the inner both sides of described U rib respectively simultaneously.