CN216780837U

CN216780837U - Positioning device for welding U-shaped ribs

Info

Publication number: CN216780837U
Application number: CN202123153297.XU
Authority: CN
Inventors: 舒先庆; 何林; 陈积里; 曾祥光; 王成林; 童升; 朱文杰; 高兴; 管秀芳; 石灿
Original assignee: Wuhan Lixin Intelligent Manufacturing Engineering Co ltd
Current assignee: Wuhan Lixin Intelligent Manufacturing Engineering Co ltd
Priority date: 2021-12-14
Filing date: 2021-12-14
Publication date: 2022-06-21
Anticipated expiration: 2031-12-14

Abstract

The embodiment of the utility model discloses a positioning device for welding U ribs, which comprises a transverse positioning component, a pressing component and a movable portal frame; the transverse positioning assemblies and the pressing assemblies are multiple and are sequentially and alternately arranged in the traveling direction perpendicular to the moving portal frame; one end of each of the transverse positioning assembly and the pressing assembly is movably connected with the movable portal frame, and the other end of each of the transverse positioning assembly and the pressing assembly is abutted against the U-shaped rib to be welded during working. The positioning device can be used for welding operation of the inside or outside fillet joint of the U rib, and accurately positions the U rib to be welded, so that the welding quality of the inside or outside fillet joint of the U rib can be greatly improved.

Description

Positioning device for welding U-shaped ribs

Technical Field

The utility model relates to the technical field of U-rib welding, in particular to a positioning device for U-rib welding.

Background

The steel box girder is an important component in a bridge bearing structure, is generally an orthotropic steel bridge deck and is mainly used for providing support and avoiding bridge deformation. Steel box girders generally include a top plate, a bottom plate, and the like. At present, orthotropic steel bridge deck plates are widely applied to the manufacture of large-span bridges, the bridge roof and the bridge bottom plate are both of the structure, and the orthotropic steel bridge deck plates are formed by welding U ribs and the bottom plate.

In the existing welding equipment for welding the outside or the inside of the U rib, the U rib to be welded is required to be fixed on a bottom plate at a certain interval, then the welding operation of the inside or outside corner joint is carried out, and welding is carried out after the interval, in the prior art, the U rib to be welded is generally placed and then spot-welded and fixed, so that the U rib can not move in the welding process, but two problems can be caused, firstly, because the U rib is longer and more, much time and labor are required to be consumed in the process of spot welding of each U rib, and the efficiency is very low; on the other hand, even if spot welding is completed, in the whole fillet weld seam welding process, due to frequent welding deformation, intermittent welding missing parts occur in the welding process, and the overall welding quality is seriously influenced.

Therefore, how to position the to-be-welded U rib and further improve the welding quality of the to-be-welded U rib fillet weld is a technical problem to be solved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a positioning device for welding a U rib, which can be used for accurately positioning the U rib to be welded in the welding operation of the inner or outer fillet joint of the U rib, so that the welding quality of the inner or outer fillet joint of the U rib can be greatly improved.

The utility model is realized by the following technical scheme that the positioning device for welding the U rib comprises a transverse positioning component, a pressing component and a movable portal frame; the transverse positioning assemblies and the pressing assemblies are multiple and are sequentially and alternately arranged in the traveling direction perpendicular to the moving portal frame; one end of each of the transverse positioning assembly and the pressing assembly is movably connected with the movable portal frame, and the other end of each of the transverse positioning assembly and the pressing assembly is abutted against the U-shaped rib to be welded during working.

On the basis of the technical scheme, the utility model can be further improved as follows.

Furthermore, the upper end of each transverse positioning assembly is movably connected with the movable portal frame through a linear slide rail, and each transverse positioning assembly is in transmission connection with the movable portal frame through a gear rack mechanism and is driven through a first driving motor arranged on the transverse positioning assembly.

Further, the transverse positioning assembly comprises a first fixed part, a first movable part, a first pressing oil cylinder and a positioning roller; the first fixing part is movably connected with the movable portal frame; the fixed end of the first pressing oil cylinder is hinged with the first fixed part, the movable end of the first pressing oil cylinder is connected with the first movable part, and a plurality of positioning rollers are respectively arranged on two sides of the first movable part; the positioning roller is abutted against and rolls along the side wall of the U rib to be welded during operation.

Further, a laser range finder for downward detection is arranged in the first movable part.

Furthermore, the distance between the positioning rollers arranged on two sides of the first movable part is adjustable.

Furthermore, the upper end of each pressing component is movably connected with the movable portal frame through a linear slide rail, and each pressing component is in transmission connection with the movable portal frame through a gear rack mechanism and is driven by a second driving motor arranged on the pressing component.

Furthermore, the pressing component comprises a second fixed part, a second movable part, a second pressing oil cylinder and a pressing roller;

the second fixing part is movably connected with the movable portal frame;

the second pushes down the stiff end of hydro-cylinder with the second fixed part is articulated, the expansion end with the second movable part is connected, push down the gyro wheel install in on the second movable part.

Further, the axis of the pressing roller is in the horizontal direction, and the pressing roller rolls along the top wall of the to-be-welded U rib during working.

Compared with the prior art, the utility model has the following beneficial technical effects: the U ribs to be welded can be tightly pressed on the bottom plate through the transverse positioning assembly and the pressing-down assembly, the welding process can be carried out while the U ribs to be welded are positioned and pressed in the welding process through the integral driving of the movable portal frame, the tedious process of positioning welding is cancelled, the efficiency is greatly improved, and meanwhile, the transverse positioning assembly and the pressing-down assembly are both transverse adjustable mechanisms, so that the distance between the U ribs can be accurately adjusted, and the precision is ensured. In addition, the pressing force of the transverse positioning assembly and the pressing assembly can be adjusted by adopting the oil cylinders, so that enough pressing force can be ensured, the welding process is not influenced by workpiece deformation, the phenomenon of blocking is avoided, and the positioning precision and the welding quality are greatly improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model.

FIG. 1 is a schematic perspective view of a positioning device for U-rib welding according to an embodiment of the disclosure;

FIG. 2 is a schematic view of another angle of an embodiment of the positioning device shown in FIG. 1;

FIG. 3 is a side view of an embodiment of the positioning device of FIG. 2;

FIG. 4 is a schematic view of another angular configuration of the embodiment of the positioning device shown in FIG. 1;

wherein, the part numbers in the figures are expressed as:

1. the device comprises a transverse positioning assembly, 2, a pressing-down assembly, 3, a movable portal frame, 4, a to-be-welded U rib, 5, a limiting block, 6, a linear sliding rail, 7, a first driving motor, 8, a gear rack mechanism, 9, a first fixing portion, 10, a first pressing-down oil cylinder, 11, a first movable portion, 12, a positioning roller, 13, a second driving motor, 14, a second fixing portion, 15, a second movable portion, 16, a second pressing-down oil cylinder, 17 and a pressing-down roller.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the utility model.

Referring to fig. 1 to 4, fig. 1 is a schematic perspective view of a positioning device for U-rib welding according to an embodiment of the disclosure; FIG. 2 is a schematic view of another angle of an embodiment of the positioning device shown in FIG. 1; FIG. 3 is a side view of an embodiment of the positioning device of FIG. 2; FIG. 4 is a schematic view of another angle of the embodiment of the positioning device shown in FIG. 1.

The utility model is realized by the following technical scheme that the positioning device for welding the U rib comprises a transverse positioning component 1, a pressing component 2 and a movable portal frame 3; the transverse positioning assemblies 1 and the pressing assemblies 2 are multiple and are sequentially and alternately arranged in the traveling direction perpendicular to the moving portal frame 3; one end of each of the transverse positioning assembly 1 and the pressing assembly 2 is movably connected with the movable portal frame 3, and the other end of each of the transverse positioning assembly 1 and the pressing assembly 2 is abutted against the U-shaped rib 4 to be welded during working.

It should be noted that the moving gantry 3 may be a frame structure, and the whole is driven by a motor to move along the length direction of the U rib 4 to be welded. The upper end of each transverse positioning assembly 1 is movably connected with the movable portal frame 3 through a linear slide rail 6, and each transverse positioning assembly 1 is in transmission connection with the movable portal frame 3 through a gear rack mechanism 8 and is driven through a first driving motor 7 arranged on the transverse positioning assembly 1. Similarly, the upper end of each pressing component 2 is movably connected with the movable portal frame 3 through a linear slide rail 6, and each pressing component 2 is in transmission connection with the movable portal frame 3 through a gear rack mechanism 8 and is driven by a second driving motor 13 arranged on the pressing component 2. The transverse positioning component 1 and the pressing component 2 can share a set of linear slide rail 6 and a gear rack mechanism 8.

It should be noted that the linear slide 6 mentioned above means a slide assembly, generally comprising a rail and a slide block, in the present invention, the rail can be fixed on the moving gantry 3, and the slide block is fixed on the transverse positioning assembly 1 and the pressing assembly 2.

The rack-and-pinion mechanism 8 includes a rack mounted on the moving gantry 3 and gears mounted on the first driving motor 7 and the second driving motor 13, and this structure is a common structure and will not be described herein.

Specifically, as shown in fig. 1 to 4, the transverse positioning assembly 1 preferably includes a first fixed portion 9, a first movable portion 11, a first pressing cylinder 10, and a positioning roller 12; the first fixing part 9 is movably connected with the movable portal frame 3; the fixed end of the first pressing oil cylinder 10 is hinged with the first fixed part 9, the movable end of the first pressing oil cylinder is connected with the first movable part 11, and a plurality of positioning rollers 12 are respectively arranged on two sides of the first movable part 11; the positioning roller 12 in operation abuts against and rolls along the side walls of the U-ribs 4 to be welded.

The first fixing portion 9 may include a connecting base movably connected to the moving gantry 3 and a fixing frame fixed to the connecting base, and the first pressing cylinder 10 may be mounted on the fixing frame. The upper and lower heights of the positioning roller 12 can be adjusted through the first pressing oil cylinder 10, the distance between the transverse positioning assemblies 1 can be adjusted through the first driving motor 7 so as to adapt to U ribs with different sizes, and each U rib 4 to be welded is accurately positioned in the horizontal direction. The first pressing oil cylinder 10 is used for compressing and limiting the U rib 4 to be welded in the vertical direction, and ensures the stability of the U rib 4 to be welded together with the transverse positioning assembly 1.

In order to detect the up-and-down movement distance of the transverse positioning assembly 1 in real time, a laser range finder for downward detection is arranged in the first movable part 11.

As for the depressing assembly 2, as shown in fig. 1 to 4, a preferred embodiment is that the depressing assembly 2 includes a second fixed portion 14, a second movable portion 15, a second depressing cylinder 16 and a depressing roller 17; the second fixed part 14 is movably connected with the movable portal frame 3; the fixed end of the second pressing oil cylinder 16 is hinged to the second fixed portion 14, the movable end of the second pressing oil cylinder is connected with the second movable portion 15, and the pressing roller 17 is installed on the second movable portion 15. The axis of the pressing roller 17 is in the horizontal direction, and the pressing roller 17 rolls along the top wall of the U rib 4 to be welded during working.

Preferably, in order to adapt to different widths of the U-shaped rib, the spacing between the positioning rollers 12 disposed on both sides of the first movable portion 11 is adjustable, for example, the positioning rollers 12 on both sides may be mounted on a roller base, the roller base is bolted to the first movable portion 11 in the form of a kidney-shaped hole, and the limiting block 5 is disposed between the roller bases on both sides, because the frequency to be adjusted is not high, and the side wall of the U-shaped rib 4 to be welded is also of an inclined structure, the spacing between the rollers on both sides can be adjusted manually. It should be noted that the term "two sides" herein refers to two sides in the direction perpendicular to the moving direction of the moving gantry 3.

The use method of the positioning device for welding the U-shaped rib provided by the utility model can be as follows: firstly, arranging the U ribs 4 to be welded on a bottom plate, starting a first driving motor 7 according to needs, enabling the transverse positioning components 1 to be arranged on two sides of the U ribs 4 to be welded, starting a first pressing oil cylinder 10, driving a positioning roller 12 to move downwards until the two sides of the U ribs 4 to be welded are positioned and fixed, adjusting the transverse position by starting a second driving motor 13 (which can also be started and adjusted with the first driving motor 7 at the same time), enabling a pressing roller 17 to be arranged above the U ribs 4 to be welded, starting a second pressing oil cylinder 16, and driving the pressing roller 17 to move downwards until the pressing roller 17 is abutted against and pressed against the tops of the U ribs 4 to be welded. The positioning work is completed at the moment, during welding, the portal frame 3 can be moved while welding, the current welding position is always positioned and pressed, the welding quality is ensured, and the welding quality reduction caused by the deformation of the welding U rib is avoided. The U rib of supplied materials itself has the side bend to warp, opening size is different, height foot (the leg height is inconsistent about the U rib) scheduling problem, and the positioner that this application provided can correct the U rib that warp in the certain limit through side extrusion and top pressure. The situation that the whole board unit is unqualified due to the fact that the deformed U ribs are directly welded is avoided as much as possible.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

In the present invention, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being permanently connected, detachably connected, or integral; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., 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 utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to 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. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. A positioning device for welding U ribs is characterized by comprising a transverse positioning assembly, a pressing assembly and a movable portal frame;

the transverse positioning assemblies and the pressing assemblies are multiple and are sequentially and alternately arranged in the traveling direction perpendicular to the moving portal frame;

one end of each of the transverse positioning assembly and the pressing assembly is movably connected with the movable portal frame, and the other end of each of the transverse positioning assembly and the pressing assembly is abutted against the U-shaped rib to be welded during working.

2. The positioning device for U-rib welding of claim 1, wherein each of the transverse positioning assemblies is movably connected to the mobile portal frame at an upper end thereof through a linear slide rail, and is drivingly connected to the mobile portal frame through a rack and pinion mechanism and driven by a first driving motor installed on the transverse positioning assembly.

3. The positioning device for U-rib welding according to claim 2, wherein the transverse positioning assembly comprises a first fixed part, a first movable part, a first pressing cylinder and a positioning roller;

the first fixing part is movably connected with the movable portal frame;

the fixed end of the first pressing oil cylinder is hinged with the first fixed part, the movable end of the first pressing oil cylinder is connected with the first movable part, and a plurality of positioning rollers are respectively arranged on two sides of the first movable part;

the positioning roller is abutted against and rolls along the side wall of the U rib to be welded during operation.

4. A positioning device for U-rib welding according to claim 3, characterized in that a downward detection laser range finder is arranged in the first movable part.

5. The positioning device for U-rib welding according to claim 3, wherein the distance between the positioning rollers arranged on both sides of the first movable portion is adjustable.

6. The positioning device for U-rib welding of claim 1, wherein the upper end of each of said pressing assemblies is movably connected with said moving gantry via a linear slide rail, and each of said pressing assemblies is connected with said moving gantry via a gear-rack mechanism and driven by a second driving motor installed on said pressing assembly.

7. The positioning device for U-rib welding of claim 6, wherein said pressing assembly comprises a second fixed portion, a second movable portion, a second pressing cylinder and a pressing roller;

the second fixing part is movably connected with the movable portal frame;

8. A positioning device for U-rib welding as set forth in claim 7, wherein the axis of said depressing roller is in a horizontal direction, and said depressing roller rolls along the top wall of the U-rib to be welded in operation.