CN215658634U - Shrouding welding set, system of U floor unit - Google Patents

Abstract

The utility model provides a sealing plate welding device and a sealing plate welding system of a U rib plate unit, wherein the sealing plate welding device of the U rib plate unit comprises: the welding machine comprises a rack, a moving mechanism and a welding mechanism; the moving mechanism is connected with the rack, the welding mechanism is connected with the moving mechanism, and the moving mechanism is used for driving the welding mechanism to move; the welding mechanism is used for welding the U-rib sealing plate. The utility model provides a shrouding welding set, system of U floor unit can improve shrouding welding efficiency and welding quality.

Description

Shrouding welding set, system of U floor unit

Technical Field

The utility model relates to a welding technology, in particular to a sealing plate welding device and system of a U rib plate unit.

Background

Steel box girder structure all can be used to present large-scale bridge, and steel box girder mainly used provides the support, avoids the bridge to warp. The steel box girder is generally formed by connecting a top plate, a bottom plate (steel plate), a closed rib (U rib) and other components in an all-welded mode, and the bottom plate and the closed rib form a U rib plate unit structure. At the both ends of U floor unit structure, still need the welding shrouding, the profile of the cross section of shrouding is unanimous with U rib inside profile, welds the end at the U rib, plays sealed waterproof rust-resistant effect. At present, the U-rib sealing plates are welded manually, so that the efficiency is not low, but the labor cost is not low, and better economic benefit cannot be generated.

SUMMERY OF THE UTILITY MODEL

In view of the above defects or improvement requirements of the prior art, the present invention provides a sealing plate welding device, system and method for a U-ribbed plate unit, which can improve welding efficiency and welding quality.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

in one embodiment, there is provided a sealing plate welding device for a U-shaped rib plate unit, including: the welding machine comprises a rack, a moving mechanism and a welding mechanism; the moving mechanism is connected with the rack, the welding mechanism is connected with the moving mechanism, and the moving mechanism is used for driving the welding mechanism to move; the welding mechanism is used for welding the U-rib sealing plate.

In one embodiment, the moving mechanism comprises a transverse moving mechanism and a vertical moving mechanism, the transverse moving mechanism comprises a transverse guide rail, the vertical moving mechanism comprises a vertical guide rail, the vertical guide rail is connected with the transverse guide rail, the vertical guide rail can move transversely along the transverse guide rail, and the welding mechanism can move vertically along the vertical guide rail.

In one embodiment, the moving mechanism further includes a longitudinal moving mechanism that drives the welding mechanism to move in a longitudinal direction, which is a length direction of the U rib plate unit.

In one embodiment, the longitudinal moving mechanism comprises a longitudinal moving frame, the longitudinal moving frame is connected with the machine frame, and the transverse guide rail of the transverse moving mechanism is arranged on the longitudinal moving frame. The longitudinal moving mechanism further comprises a roller and a longitudinal fixing structure, the longitudinal moving mechanism can roll on the rack through the roller, and the longitudinal moving mechanism is detachably connected to the rack through the longitudinal fixing structure.

In one embodiment, the welding mechanism comprises a welding gun positioning mechanism, and the welding gun positioning mechanism comprises a rotating shaft, and the rotating shaft is used for fitting with the inner contour of the U rib where the sealing plate to be welded is located.

In one embodiment, the welding gun positioning mechanism further comprises a rotary driving mechanism, the rotary driving mechanism is connected with the moving mechanism, and the rotary driving mechanism is used for driving the rotating shaft to rotate.

In one embodiment, the sealing plate welding device further comprises a U-rib plate unit positioning structure, wherein the U-rib plate unit positioning structure comprises a U-rib positioning structure, a steel plate vertical positioning structure and a steel plate longitudinal positioning structure; the U rib positioning structure is used for limiting the positions of the sealing plate welding device and the U rib where the sealing plate to be welded is located, the steel plate vertical positioning structure is used for limiting the vertical positions of the sealing plate welding device and the steel plate of the U rib plate unit, and the steel plate longitudinal positioning structure is used for limiting the longitudinal positions of the sealing plate welding device and the steel plate of the U rib plate unit.

In one embodiment, the rack comprises two fixed arms, the U-rib positioning structure comprises at least one side plate, the side plate is connected with the fixed arms of the rack, and the side plate has the same inclination angle with the outer side surface of the U-rib and is used for being attached to the outer side surface of the U-rib; the steel plate vertical positioning structure comprises a steel plate vertical binding surface; preferably, the steel plate vertical abutting surface is the lower edge of a fixed arm of the rack; the steel plate longitudinal positioning structure comprises a steel plate longitudinal binding surface; preferably, the longitudinal abutting surface of the steel plate is arranged below the frame.

In one embodiment, the sealing plate welding device comprises a fixing mechanism, and the fixing mechanism is connected with the frame and used for fixing the sealing plate welding device and the U rib plate unit.

In one embodiment, the fixing structure comprises a clamping plate, the clamping plate is arranged opposite to the vertical abutting surface of the steel plate, a threaded hole is formed in the clamping plate, and a screw penetrates through the threaded hole to abut against the steel plate; the fixing structure comprises a fixing plate, the fixing plate and the side plates are arranged oppositely, a threaded hole is formed in the fixing plate, and a screw penetrates through the threaded hole and abuts against the outer side face of the U rib.

This application on the other hand still provides a shrouding welding system of U floor unit, shrouding welding system includes as any one above shrouding welding set, shrouding welding system still includes moving platform, shrouding welding set with moving platform connects, moving platform includes horizontal migration mechanism and lifting mechanism, is used for with shrouding welding set removes to treat welding shrouding department.

In one embodiment, the mobile platform is a forklift device.

In another aspect of the present application, a method for welding a sealing plate of a U rib plate unit is further provided, where the method for welding a sealing plate includes welding with the sealing plate welding device as described in any one of the above or welding with the sealing plate welding system as described in any one of the above.

According to the sealing plate welding device, the sealing plate welding system and the sealing plate welding method for the U rib plate unit, the welding efficiency can be improved, and the welding quality is guaranteed. The utility model provides a shrouding welding set includes: the welding machine comprises a rack, a moving mechanism and a welding mechanism; the moving mechanism is connected with the rack, the welding mechanism is connected with the moving mechanism, and the moving mechanism is used for driving the welding mechanism to move; welding mechanism is used for welding the automatic weld of shrouding can be realized to the U rib shrouding, improves welding efficiency, guarantees welding quality.

Drawings

Fig. 1 is a schematic view of the overall structure of the U-shaped rib plate unit.

Fig. 2 is a schematic cross-sectional view of a U-rib assembly of the U-rib plate unit.

Fig. 3 is a schematic cross-sectional view of a closure plate of the U-ribbed plate unit.

Fig. 4 is a schematic view illustrating a sealing plate welding device of the U rib plate unit according to an embodiment of the present application.

Fig. 5 is a schematic view of the overall structure of a sealing plate welding device according to an embodiment of the present application.

Fig. 6 is a side view of a plate welding apparatus according to an embodiment of the present application.

Fig. 7 is a front view of a plate welding apparatus according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "lateral", "longitudinal", "top", "bottom", "inner", "outer", "circumferential", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. The interpretation of such words should be made at the discretion of the person skilled in the art.

In the present invention, unless otherwise specifically stated or limited, the terms "disposed," "mounted," "connected," "fixed," and the like are used in a broad sense to refer to those skilled in the art, and for example, "connected" may be fixedly connected, detachably connected, or integrally formed; 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. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Referring to fig. 1-2, the U rib plate unit includes a steel plate 1 and a U rib 2. Each U rib plate unit is formed by welding a plurality of U ribs and steel plates, a long and narrow cavity is formed between the steel plates 1 and the U ribs 2, and longitudinal welding seams are formed at the joint parts of the steel plates and the U ribs. In actual use as a deck slab, the steel plate 1 faces upward and the U-rib 2 faces downward. The steel plate 1 is structural steel, the thickness B of the steel plate is more than or equal to 12mm, the longitudinal length of the steel plate can reach 16m, and the transverse width of the steel plate can reach 6 m.

Fig. 2 is a schematic cross-sectional view of one U-rib assembly of the U-rib plate unit 100. The U-shaped ribs 2 are made of structural steel, the thickness b of the structural steel is more than or equal to 6mm, the height H of the structural steel is more than or equal to 250mm, the width Wa of an upper opening of the structural steel is more than or equal to about 250mm, the width Wb of a lower bottom of the structural steel is more than or equal to 150mm, and the structural steel is rolled or formed in a cold bending mode. It is understood that the transverse direction of the present application is the direction of the width of the steel plate of the U-rib plate unit (X direction in the drawing), and the vertical direction of the present application is the direction perpendicular to the steel plate plane of the U-rib plate unit (Z direction in the drawing). The longitudinal direction is the U-rib length direction, i.e., the direction in which the U-rib extends.

Referring to fig. 3, a cross-sectional view of the sealing plate of the U-ribbed plate unit is shown. The cross section of the sealing plate 3 has the same profile as the inner profile of the U-shaped rib 2, and is welded at the end of the U-shaped rib 2 to play a role in sealing, water proofing and rust proofing. Referring to fig. 4, a welding device 101 for welding a sealing plate 3 of a U-ribbed plate unit according to an embodiment of the present invention is shown.

In an embodiment of the present application, referring to fig. 5, the sealing plate welding device of the U-shaped rib plate unit includes: a frame 1011, a moving mechanism 1021, and a welding mechanism 1031. The moving mechanism is connected with the rack, the welding mechanism is connected with the moving mechanism, and the moving mechanism is used for driving the welding mechanism to move; the welding mechanism is used for welding the U-rib sealing plate. It will be appreciated that the frame 1011 is used for carrying the moving mechanism and the welding mechanism, and for the specific structure of the frame, it may be a fixed beam structure, and preferably, it includes two fixed arms 1020 arranged in parallel along the longitudinal direction, so as to ensure the welding stability, and the frame may also include two cross arms arranged along the transverse direction, so as to form a frame structure, further enhancing the fixing and stability.

In one embodiment, the translation mechanism includes a lateral translation mechanism including lateral guide rails 1022 and a vertical translation mechanism including vertical guide rails 1023 coupled to the lateral guide rails. In one embodiment of the application, the vertical guide rail can move transversely along the transverse guide rail, and the welding mechanism can move vertically along the vertical guide rail. It can be understood that the welding mechanism can be directly connected with the vertical moving mechanism, namely the vertical moving mechanism is arranged between the welding mechanism and the transverse moving mechanism; the welding mechanism can also be directly connected with the transverse moving mechanism, namely the transverse moving mechanism is arranged between the welding mechanism and the vertical moving mechanism. In an embodiment of the application, welding mechanism is direct to be connected with vertical moving mechanism, and lateral shifting mechanism sets up in the frame, and is rational in infrastructure, and space utilization is big, and the structure is more stable. It can be understood that the steel plate width direction of U floor unit is transversely be for this application, and the vertical steel plate plane vertical direction that is U floor unit of this application.

In one embodiment, the moving mechanism further includes a longitudinal moving mechanism 1024 that drives the welding mechanism to move in a longitudinal direction, which is a length direction of the U rib plate unit. In one embodiment, the longitudinal movement mechanism includes a longitudinal movement frame 1012 coupled to the frame and the lateral rails of the lateral movement mechanism are disposed on the longitudinal movement frame. In one embodiment, the longitudinal movement mechanism further includes a roller 1025 and a longitudinal fixation structure 1013. The longitudinal moving mechanism 1024 can roll on the rack through a roller, and the longitudinal moving mechanism 1024 is detachably connected to the rack through a longitudinal fixing structure. The longitudinal fixing structure can be in the form of clamping connection, bolt connection and the like. In one embodiment, the longitudinal securing structure 1013 is a snap-fit structure having a bayonet on the frame 1011 and a snap on the longitudinal moving frame 1012. When the longitudinal moving mechanism 1024 moves to a desired position, the buckle is locked in the bayonet, and the longitudinal fixation is completed. Specifically, the bayonet socket setting is on the fixed arm, and the gyro wheel can move on the fixed arm, and the gyro wheel can set up 4, and every fixed arm corresponds two gyro wheels. The longitudinal carriage has a cross beam 1026 that spans the two fixed arms, and the transverse guide rails are provided on the cross beam. In this embodiment, a detachable longitudinal fixing structure 1013 is provided to facilitate the detachment and installation of the welding mechanism and the moving mechanism from the rack, which is simple and effective. Adopt the gyro wheel, can avoid because of the dismantlement difficulty that shrouding welding set overweight leads to. The gyro wheel can directly roll, and after vertical fixed knot structure 1013 unblock, welded structure and moving mechanism can directly roll in the frame, and it is convenient to dismantle. Moreover, the welding structure and the moving mechanism can directly roll off from the rack (the vertical moving mechanism is adjusted to be higher than the ground height as required to prevent collision with the ground), and the welding structure and the moving mechanism move on the ground and are convenient to carry. In one embodiment, the vertical guide rail of the vertical moving mechanism is adjustable in height, the height of the vertical moving mechanism which can be adjusted to the highest position is higher than the ground when the vertical moving mechanism is detached and carried, and the height of the vertical moving mechanism is lowered to an appropriate height after the vertical fixing structure is locked during welding, so that the space is fully utilized.

In one embodiment, the welding mechanism includes a torch positioning mechanism comprising a shaft 1014 for engaging the inner profile of the U-rib on which the closure plate is to be welded. The welding gun positioning mechanism further comprises a rotary driving mechanism, the rotary driving mechanism is connected with the vertical moving mechanism, and the rotary driving mechanism is used for driving the rotating shaft to rotate. Specifically, the rotation driving mechanism includes a rotation driving motor 1017, a first gear 1015, and a second gear 1016. The rotary drive mechanism is coupled to the vertical guide rail 1023 via the rotary drive bracket 1018 and the rail attachment plate 1019. The rotation driving motor 1017, the first gear 1015, and the second gear 1016 are attached to a rotation driving bracket 1018. The first gear 1015 is connected with an output shaft of the rotary driving motor 1017, the second gear 1016 is in meshing transmission with the first gear 1015, and the rotating shaft 1014 is connected with the second gear 1016. The welding gun is fixed to a shaft 1014 (not shown). Through setting up rotatable welder positioning mechanism for when the welding shrouding, limit welding limit rotational positioning reduces the friction, and the location is accurate, and the operation is smooth and easy.

In one embodiment, the sealing plate welding device further comprises a U rib plate unit positioning structure, and the U rib plate unit positioning structure comprises a U rib positioning structure, a steel plate vertical positioning structure and a steel plate longitudinal positioning structure. The U rib positioning structure is used for limiting the positions of the U ribs where the sealing plate welding devices and the sealing plates to be welded are located, the steel plate vertical positioning structure is used for limiting the vertical positions of the steel plates of the sealing plate welding devices and the U rib plate units, and the steel plate longitudinal positioning structure is used for limiting the longitudinal positions of the steel plates of the sealing plate welding devices and the U rib plate units.

Specifically, in one embodiment, the U-rib positioning structure includes at least one side plate 1042, the side plate is connected to the fixing arm of the frame, and the side plate has the same inclination angle with the outer side surface of the U-rib for fitting with the outer side surface of the U-rib. Through the curb plate direct laminating close on the lateral surface of U rib, can fix a position fast and dismouting, the various positions that adapt to the U rib are put, improve equipment availability factor. The steel plate vertical positioning structure comprises a steel plate vertical attaching surface 1044, and the steel plate vertical attaching surface 1044 is used for attaching to the upper side surface of the steel plate; preferably, the vertical abutting surface of the steel plate is the lower edge of a fixed arm of the rack. The steel plate longitudinal positioning structure comprises a steel plate longitudinal attaching surface 1045, and the steel plate longitudinal attaching surface 1045 is used for abutting against an end face of an attached steel plate (refer to fig. 6); preferably, the longitudinal abutting surface of the steel plate is arranged below the frame.

In one embodiment, the sealing plate welding device comprises a fixing mechanism, and the fixing mechanism is connected with the frame and used for fixing the sealing plate welding device and the U rib plate unit. Fixed knot constructs includes cardboard 1051, has cardboard screw hole 1052 on the cardboard, and when using, wherein the vertical binding face 1044 of steel sheet and the side laminating that goes up of steel sheet, the screw passes the downside butt of screw hole and steel sheet. In one embodiment, the steel plate longitudinal abutting surface 1045 is disposed on one side of the steel plate longitudinal abutting plate 1046, and the clamping plate 1051 is connected to the fixing arm 1020 through the steel plate longitudinal abutting plate 1046. The fixing structure further includes a fixing plate 1043, the fixing plate may have the same shape as the side plate 1042, the fixing plate 1043 is provided with a plurality of fixing plate threaded holes 1044, the fixing plate 1043 and the side plate 1042 are disposed opposite to each other, and a distance between the side plate 1042 and the fixing plate 1043 is greater than a width of an outer contour of the U-shaped rib, when in use, the side plate 1042 is attached to an outer side surface of one side of the U-shaped rib, and a screw penetrates through the fixing plate threaded hole to prop against the outer side surface of the other side of the U-shaped rib (refer to fig. 7).

In this embodiment, the vertical attaching surface 1044 of the steel plate is the lower edge of one end of the fixing arm. The vertical location structure of steel sheet is fixed arm one end in fact, adopts this mode, simple structure, and stable in structure, the location is convenient. Of course, other more complex approaches may be used. And, the vertical binding face setting of steel sheet is in the below of frame, and fixed knot constructs including the cardboard, has the cardboard screw hole on the cardboard, and when using, the terminal surface of the vertical binding face butt laminating steel sheet of steel sheet, wherein the side laminating of going up of the vertical binding face of steel sheet and steel sheet, the screw passes the downside butt of screw hole and steel sheet. By adopting the mode, the whole structure is simple, the structure is stable, and the positioning and the fixing of the steel plate are convenient.

In the embodiment of the application, the fixing mechanisms are all pure mechanical connection structures, and are simple in structure, stable in structure and convenient to fix. Of course, other more complicated ways such as electric control structure, hydraulic structure, etc. can be adopted, but the cost is high, the structure is complicated, the failure rate is high, and the disassembly and transportation are inconvenient.

This application adopts pure mechanical structure, and rational utilization space forms detachable overall structure through ingenious U floor unit location structure, fixed establishment, moving mechanism, simple structure, and is with low costs, easy dismounting.

An embodiment of this application still provides a shrouding welding system of U floor unit, and this shrouding welding system includes shrouding welding set, still includes moving platform (not shown), and shrouding welding set is connected with moving platform, and moving platform includes horizontal migration mechanism and lifting mechanism, is used for with shrouding welding set removes to treat welding shrouding department. It will be appreciated that the sealing plate welding means may be any one of the embodiments described above and any combination thereof. The single sealing plate welding device is light in weight and convenient to move and construct.

In one embodiment, the mobile platform is a forklift device. Fork truck device and shrouding welding set can be for independent device respectively, sets up the socket in shrouding welding set one end, and fork truck device has and inserts the arm, will insert the arm and insert the socket, transports to shrouding welding set and removes and fix. The forklift device and the closing plate welding device can also be designed into other detachable connection modes, such as bolt connection, clamping connection and the like. In one embodiment, the forklift device is an existing forklift or a custom designed forklift. Utilize current fork truck, can high-efficiently utilize to have the product, accomplish the shrouding welding set of this application in the removal of factory building to can adapt to the situation that multilayer U floor unit stacked well, lift shrouding welding set and wait to weld the height of U floor unit and weld.

In an embodiment of this application, can be according to the construction requirement, parallelly connected the use with a plurality of shrouding welding set, improve workman work efficiency. Moreover, the welding gun head adopts an open chuck, so that different welding guns can be quickly replaced according to production requirements, and the welding gun head is suitable for welding different sealing plates. In one embodiment, the sealing plate welding system further comprises a liquid crystal display screen for displaying the welding state in real time and facilitating parameter adjustment. During welding, different welding voltage and current and welding speed can be set for different welding sections, and the welding effect is guaranteed.

An embodiment of the present application further provides a method for welding a sealing plate of a U rib plate unit, where the method includes welding with the sealing plate welding device according to any one of the above embodiments or welding with the sealing plate welding system according to the above embodiments.

In one embodiment of the present application, the sealing plate welding method includes:

utilize fork truck to remove shrouding welding set to the U rib, the vertical binding face 1045 of steel sheet of the vertical binding face 1046 one side of steel sheet supports steel sheet one end, the vertical binding face 1044 of steel sheet is laminated with the last side of steel sheet, the lateral plate 1042 is laminated with the lateral surface of one side of U rib, the lateral surface of U rib opposite side is withstood to the fixed plate screw hole 1044 that passes fixed plate 1043 with the screw, pass cardboard screw hole 1052 and the downside butt of steel sheet of cardboard 1051 with the screw.

Adjusting the position of the welding mechanism, adjusting the position of the welding gun, aligning the gun head of the welding gun to the welding original point, and starting profiling welding by the welding gun from the original point along the contour of the sealing plate.

Specifically, the intersection point of the U rib 2 and one side of the steel plate 1 is set as a coordinate origin, and the welding gun head is controlled by a program to move to the coordinate origin. The profiling welding mode is as follows: in the positioning coordinate system, key parameters are set according to the shape of the U rib, the rotating shaft 1014 moves along the inner contour of the U rib 2, and the welding gun is fixed on the rotating shaft 1014 (not shown in the figure), thereby completing the profile welding.

The profiling motion of this application is by programming control, through horizontal, vertical direction's guide rail and rotating electrical machines, carries out profiling motion in 3 directions, can be applicable to the welding of the U rib shrouding of various specifications. By the adoption of the sealing plate welding method of the U rib plate unit, a worker can operate multiple sealing plate welding devices simultaneously, convenience and high efficiency are achieved, and welding quality is good.

It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the utility model, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (14)

1. The utility model provides a shrouding welding set of U floor unit which characterized in that, the shrouding welding set of U floor unit includes: the welding machine comprises a rack, a moving mechanism and a welding mechanism; the moving mechanism is connected with the rack, the welding mechanism is connected with the moving mechanism, and the moving mechanism is used for driving the welding mechanism to move; the welding mechanism is used for welding the sealing plates of the U rib plate units.

2. A sealing plate welding device as claimed in claim 1, wherein said moving mechanism includes a lateral moving mechanism and a vertical moving mechanism, said lateral moving mechanism includes a lateral rail, said vertical moving mechanism includes a vertical rail, said vertical rail is connected to said lateral rail, said vertical rail can move laterally along said lateral rail, and said welding mechanism can move vertically along said vertical rail.

3. A sealing plate welding device as claimed in claim 2, wherein the moving mechanism further comprises a longitudinal moving mechanism which drives the welding mechanism to move in a longitudinal direction, the longitudinal direction being a length direction of the U rib plate unit.

4. A sealing plate welding apparatus as claimed in claim 3, wherein said longitudinal moving mechanism includes a longitudinal moving frame connected to said frame, and a transverse rail of said transverse moving mechanism is provided on said longitudinal moving frame; the longitudinal moving mechanism further comprises a roller and a longitudinal fixing structure, the longitudinal moving mechanism can roll on the rack through the roller, and the longitudinal moving mechanism is detachably connected to the rack through the longitudinal fixing structure.

5. A sealing plate welding arrangement as claimed in claim 1, wherein the welding mechanism includes a welding gun locating mechanism including a shaft for engaging the inner profile of the U-rib on which the sealing plate is to be welded.

6. A sealing plate welding apparatus as claimed in claim 5, wherein said welding gun positioning mechanism further comprises a rotary drive mechanism, said rotary drive mechanism being connected to said moving mechanism, said rotary drive mechanism being configured to drive said shaft to rotate.

7. A sealing plate welding device as claimed in claim 1, further comprising a U-ribbed plate unit locating structure comprising a U-ribbed plate locating structure, a steel plate vertical locating structure, a steel plate longitudinal locating structure; the U rib positioning structure is used for limiting the positions of the sealing plate welding device and the U rib where the sealing plate to be welded is located, the steel plate vertical positioning structure is used for limiting the vertical positions of the sealing plate welding device and the steel plate of the U rib plate unit, and the steel plate longitudinal positioning structure is used for limiting the longitudinal positions of the sealing plate welding device and the steel plate of the U rib plate unit.

8. The sealing plate welding device of claim 7, wherein the frame comprises two fixing arms, the U-rib positioning structure comprises at least one side plate, the side plate is connected with the fixing arms of the frame, the side plate has the same inclination angle with the outer side surface of the U-rib, and the steel plate vertical positioning structure comprises a steel plate vertical abutting surface for abutting against the outer side surface of the U-rib.

9. A sealing plate welding apparatus as claimed in claim 8 wherein said steel plate vertical abutment surface is a lower edge of said stationary arm of said frame.

10. A sealing plate welding apparatus as claimed in claim 7, wherein said steel plate longitudinal locating formation comprises a steel plate longitudinal abutment surface disposed below said frame.

11. A sealing plate welding apparatus as claimed in claim 8, wherein said sealing plate welding apparatus includes a securing mechanism connected to said frame for securing said sealing plate welding apparatus to the U-ribbed plate unit.

12. A sealing plate welding arrangement as claimed in claim 11, wherein said securing means comprises a clamping plate disposed opposite to the vertically facing surface of the steel plate, said clamping plate having a threaded clamping plate aperture through which a screw is passed to abut the steel plate; the fixing mechanism comprises a fixing plate, the fixing plate and the side plate are arranged oppositely, a fixing plate threaded hole is formed in the fixing plate, and a screw penetrates through the fixing plate threaded hole and abuts against the outer side face of the U rib.

13. The utility model provides a shrouding welding system of U floor unit which characterized in that: a sealing plate welding system including a sealing plate welding apparatus as claimed in any one of claims 1 to 12, and further including a moving platform to which the sealing plate welding apparatus is connected, the moving platform including a horizontal moving mechanism and a lifting mechanism for moving the sealing plate welding apparatus to a location where a sealing plate is to be welded.

14. A closure welding system in accordance with claim 13 wherein said mobile platform is a forklift device.

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