A weld gasket support device, tooling, u-rib weld system and method

Abstract

The application provides a welding gasket supporting device, tool, U rib welding system and method, the welding gasket supporting device includes: trolley main body, telescopic mechanism, clamping mechanism, the trolley main body is used to move in the inside of the object to be welded along the welding direction;The clamping mechanism is connected with the trolley main body through the telescopic mechanism, and the clamping mechanism is used to clamp the gasket;The telescopic mechanism can drive the clamping mechanism, so that the gasket is away from or close to the weld.The welding gasket supporting device, tool, U rib welding system and method of the application can improve the welding efficiency and welding quality.

Description

TECHNICAL FIELD

[0001] The present application relates to welding technology, in particular to a welding gasket support device, tool, U rib welding system and method. BACKGROUND

[0002] Large bridges nowadays all use steel box girder structures, which are mainly used to provide support to avoid deformation of the bridge. The steel box girder is generally connected by full welding of components such as the top plate, the bottom plate, and the closed rib, and the bottom plate and the closed rib form a U rib plate unit structure. In the traditional bridge plate unit welding process, the welding of the U rib plate unit only requires external penetration welding, and due to the special structure of the U rib and the plate unit, there is no support of internal welding seams, so it is easy to weld through and have a large number of defects. In bridge repair, gasket tools are also used, but they cannot meet the efficient mass production of U rib plate units. There are also mobile gasket tool schemes in the prior art, but they are mainly used for single-sided welding and double-sided forming full penetration welding, and the gasket tool cannot meet the situation of only requiring external penetration welding. There is no gasket support device, tool, U rib welding system and method suitable for external penetration welding in the prior art, which cannot guarantee the quality of welding and the production rate is limited. SUMMARY

[0003] In view of the above defects or improvement needs of the prior art, the present application provides a welding gasket support device, tool, U rib welding system and method, which can improve the welding efficiency and welding quality.

[0004] The technical scheme adopted by the present application to solve the above technical problems is:

[0005] On the one hand, a welding gasket support device is provided, which comprises: a trolley main body, an extension mechanism, and a clamping mechanism. The trolley main body is used to move in the welding direction inside a to-be-welded object. The clamping mechanism is connected to the trolley main body through the extension mechanism, and is used to clamp a gasket. The extension mechanism can drive the clamping mechanism so that the gasket moves away from or approaches a weld.

[0006] In an embodiment of the present application, the trolley main body comprises traveling wheels and guide wheels. The traveling wheels are located at the bottom of the trolley main body and are used to support the trolley main body to travel. The guide wheels are located on both sides of the trolley main body and are used to contact the inner wall of the to-be-welded object for positioning and guiding.

[0007] In an embodiment of the present application, the trolley main body comprises a trolley driving device, which is used to drive the trolley main body to move in the welding direction.

[0008] In one embodiment of the present application, the telescopic mechanism comprises a telescopic rod and a telescopic driving source, the telescopic driving source drives the telescopic rod to telescope, thereby driving the clamping mechanism to move the gasket away from or close to the weld.

[0009] In one embodiment of the present application, the clamping mechanism is arranged on one side or both sides of the trolley body.

[0010] In one embodiment of the present application, the clamping mechanism comprises a base, a first limiting structure, a second limiting structure, and a limiting clamping structure, the first limiting structure is arranged at one end of the base, the limiting clamping structure is arranged at the other end of the base, and the first limiting structure and the limiting clamping structure are used for longitudinally clamping the gasket; the second limiting structure is arranged above the base, the base has a protruding structure, and the second limiting structure and the protruding structure are used for limiting the vertical movement of the gasket.

[0011] In one embodiment of the present application, the first limiting structure is detachably arranged at one end of the base, the first limiting structure comprises a clamping groove and a limiting plate, the clamping groove is located between the base and the second limiting structure, and the limiting plate can be inserted into the clamping groove.

[0012] In one embodiment of the present application, the limiting clamping structure comprises a compression spring and a pressing plate, one end of the compression spring is connected with the base, the other end of the compression spring abuts against one side of the pressing plate, and the other side of the pressing plate is used for placing the gasket.

[0013] In one embodiment of the present application, the second limiting structure is detachably connected above the base, the second limiting structure comprises a first plate and a second plate, the second plate is downwardly bent to form a certain angle with the first plate, and is used for limiting the horizontal movement of the gasket.

[0014] In one embodiment of the present application, the protruding structure of the base is a longitudinally extending protrusion, and the cross section of the protrusion is arc-shaped.

[0015] In one embodiment of the present application, the material of the base is copper.

[0016] The present application also provides a welding gasket tooling, which comprises the welding gasket supporting device according to any one of the above, and further comprises a set of gaskets, the set of gaskets comprises a plurality of gaskets, and the plurality of gaskets can be longitudinally arranged and clamped in the clamping mechanism.

[0017] In one embodiment of the present application, the gasket is a ceramic gasket, the set of gaskets comprises 6-8 gaskets, and the total length of the set of gaskets is 180-220 mm.

[0018] The U-rib welding system further comprises the welding backing support device or the welding backing tooling according to any one of the above.

[0019] The U-rib welding method further comprises welding by using the U-rib welding system according to the above.

[0020] The welding backing support device, the welding backing tooling, the U-rib welding system and the U-rib welding method can improve the welding efficiency and the welding quality.

[0021] Compared with the prior art, the present application has at least the following beneficial effects:

[0022] (1) The backing pad supports the weld from the inside, and the backing pad is driven to walk synchronously with the outer welding by the trolley body, so that the welding quality of the outer welding is greatly improved, and the trolley body is arranged flexibly and has high stability, thereby improving the production efficiency.

[0023] (2) The welding backing support device can be independently driven, and the walking of the trolley body and the driving of the clamping mechanism are both electrically controlled, so that the operation is convenient, the control is more convenient, and the manufacturing and maintenance costs are low.

[0024] (3) The welding backing tooling is designed to be detachable, is arranged flexibly, is convenient to disassemble and assemble, and is convenient to replace after wear due to overheating. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 The figure is a schematic diagram of the overall structure of the welding backing support device of one embodiment of the present application.

[0026] Figure 2 The figure is a schematic diagram of the side view of the welding backing support device of one embodiment of the present application.

[0027] Figure 3 The figure is a schematic diagram of the partial structure of the welding backing support device of one embodiment of the present application.

[0028] Figure 4 The figure is a schematic diagram of the clamping mechanism and the clamping structure of the welding backing pad of one embodiment of the present application.

[0029] Figure 5 The figure is a schematic diagram of the clamping structure of the welding backing pad of one embodiment of the present application.

[0030] Figure 6 The figure is a schematic diagram of the U-rib plate unit structure of the object to be welded of one embodiment of the present application.

[0031] Figure 7 The figure is a schematic diagram of the cross section of the welding backing support device entering the U-rib plate unit of one embodiment of the present application.

[0032] Figure 8 A schematic view of a U-rib welding system according to an embodiment of the present application. DETAILED DESCRIPTION

[0033] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and should not be used to limit the present application.

[0034] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "transverse", "longitudinal", "top", "bottom", "inner", "outer", "circumferential" and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. The interpretation of such terms should be made from the perspective of a person skilled in the art.

[0035] In the present application, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection", "fixing" and the like should be understood in a broad sense from the perspective of a person skilled in the art, for example, "connection" can be fixed connection, or detachable connection, or integral; can be directly connected, or indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For a person of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0036] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, a person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0037] In an embodiment of the present application, reference is made to Figures 1-3The welding gasket supporting device comprises a trolley body 101, an extension mechanism 103, and a clamping mechanism 102. The trolley body 101 is used to move in a welding direction inside a to-be-welded object. The clamping mechanism 102 is connected to the trolley body 101 through the extension mechanism 103, and is used to clamp a gasket. The extension mechanism 103 can drive the clamping mechanism 102 to move the gasket away from or close to a welding seam.

[0038] In an embodiment, the trolley body 101 has a base 1010 at the bottom of the trolley body. The base 1010 is mainly used to support the trolley body and other components, and the specific structure of the base is not limited in the present application. The base can also be a plate structure or a truss structure. In an embodiment, the base 1010 has support structures at the front and rear ends, which are used to support related components. In an embodiment, the support structures are support plates 1016, including front support plates 1016a and rear support plates 1016b. The outer contour shape of the support plates matches the cross-sectional shape of the internal cavity of the to-be-welded object.

[0039] In an embodiment of the present application, the trolley body 101 has a walking device for supporting the trolley body to walk. Specifically, it includes walking wheels 1014. The walking wheels are located at the bottom of the trolley body, and specifically, the walking wheels are arranged on the base. In the present embodiment, there are four walking wheels, one on each of the front, rear, left and right sides. The walking direction of the walking wheels is along the front-rear direction of the trolley body, i.e. the welding direction of the to-be-welded object.

[0040] In an embodiment of the present application, the trolley body 101 has a guiding device for positioning and guiding when the trolley body moves. Specifically, the guiding device includes guiding wheels 1015. In an embodiment, the guiding wheels 1015 are located on both sides of the trolley body, one on each of the front and rear sides, a total of four guiding wheels, which are used to contact the inner wall of the to-be-welded object for positioning and guiding. Specifically, the guiding wheels 1015 are arranged on the support plates 1016, one guiding wheel on each of the left and right sides of the front and rear support plates. The rotation shaft direction of the guiding wheels is approximately vertical. In an embodiment, the guiding wheels are installed at the lower part of the front and rear support plates. In an embodiment, a set of left and right guiding wheels can also be installed in the middle part of the base 1010. The outer contour shape of the support plates matches the cross-sectional shape of the internal cavity of the to-be-welded object, and by installing guiding wheels on the support plates, the distance between the trolley body and the to-be-welded object is ensured to be constant, preventing the trolley body from deviating during operation.

[0041] In an embodiment of the present application, the trolley body comprises a trolley driving device for driving the trolley body to move along the welding direction. In an embodiment, the trolley driving device comprises a trolley driving motor 1011, a speed reducer 1012, and a transmission mechanism 1013. The trolley driving motor 1011 is arranged on the base, one side of the speed reducer 1012 is connected with the trolley driving motor 1011, the other side of the speed reducer 1012 is connected with the transmission mechanism 1013, and the specific structure of the transmission mechanism 1013 is not limited. In an embodiment, the transmission mechanism comprises a transmission shaft and / or a chain, which is in transmission connection with the walking wheel 1014. The power output by the speed reducer 1012 is transmitted to the roller 1014 through the transmission shaft and / or the chain, to drive the roller to rotate and move the trolley body. One side of the transmission mechanism 1013 is connected with the front support plate 1016a, and the front support plate 1016a is provided with a jack for control cable and power line, to facilitate wiring.

[0042] In an embodiment, a support rod 1017 is arranged between the front support plate 1016a and the rear support plate 1016b, and the number of the support rods is preferably 2-3. One support rod is arranged on the side where the clamping mechanism 102 is arranged, and 1-2 support rods are arranged on the side where the clamping mechanism 102 is not arranged. The trolley driving motor 1011, the speed reducer 1012, etc. are located in the space formed by the support rods and the front and rear support plates. The support rods can strengthen the strength and stability of the trolley body, and effectively protect the driving device on the trolley body.

[0043] In an embodiment, an encoder 1019 is arranged on the inner side of the rear support plate 1016b. The encoder is used for speed control of the longitudinal movement of the trolley body. The encoder feeds back the rotating speed to the PLC through the counting wheel to calculate the real-time running speed of the welding gasket support device. After the PLC compares the speed, the trolley driving motor speed is controlled to ensure that the welding gasket support device and the outer welding equipment have the same moving speed.

[0044] In an embodiment, the telescopic mechanism 103 comprises a telescopic rod 1018 and a telescopic driving source 1012. The telescopic driving source drives the telescopic rod to telescope, thereby driving the clamping mechanism to make the gasket away from or close to the weld. In an embodiment, the telescopic driving source 1012 is an electric driving source. The trolley body 101 and the clamping mechanism 102 are connected through the telescopic rod 1018, which is controlled by electricity. After the telescopic rod 1018 is extended, the clamping mechanism is pushed, so that the gasket on the clamping mechanism is attached to the weld. In an embodiment, the telescopic driving source 1012 is a telescopic driving motor.

[0045] In one embodiment, the clamping mechanism is arranged on one side of the trolley body. In this embodiment, the guide wheels are arranged on the side of the front and rear support plates without the clamping mechanism. Of course, the guide wheels can be arranged on both sides of the front and rear support plates. The distance of the guide wheels extending out is accurately calculated so that when the guide wheels contact the object to be welded, the gasket can be in close contact with the back of the weld to prevent the clamping mechanism from colliding with the object to be welded and to play a protective role. Of course, the clamping mechanism can also be arranged on both sides of the trolley body according to needs.

[0046] In one embodiment, referring to Figure 4 , the clamping mechanism 102 includes a base, a first limiting structure, a second limiting structure, and a limiting clamping structure. The first limiting structure is arranged at one end of the base, and the limiting clamping structure is arranged at the other end of the base. The first limiting structure and the limiting clamping structure are used to longitudinally clamp the gasket 1024. The second limiting structure is arranged above the base. The base has a protruding structure. The second limiting structure and the protruding structure are used to limit the vertical movement of the gasket.

[0047] In one embodiment, the material of the base is copper. Specifically, the base includes a copper sleeve 1022. The gasket 1024 is a ceramic gasket.

[0048] In one embodiment, the first limiting structure is detachably arranged at one end of the base. In one embodiment, the first limiting structure includes a clamping groove 1027 and a limiting plate 1023. The clamping groove is located between the base and the second limiting structure, and the limiting plate can be inserted into the clamping groove. It can be understood that the clamping groove can be directly formed by the base itself or by the gap between the base and the second limiting structure. By arranging the clamping groove structure, the end of the gasket can be limited and fixed, and the gasket can be conveniently disassembled. The material of the limiting plate 1023 can be ordinary carbon steel.

[0049] In one embodiment, the limiting clamping structure is used to generate a longitudinal clamping force to clamp the gasket. In one embodiment, the limiting clamping structure includes an elastic element for generating a longitudinal elastic force to clamp the gasket. In one embodiment, the limiting clamping structure includes a compression spring 1026 and a pressing plate 1025. One end of the compression spring is connected with the base, and the other end of the compression spring is in abutment with one side of the pressing plate. The other side of the pressing plate is used to place the gasket. The material of the pressing plate 1025 can be ordinary carbon steel. It can be understood that the limiting clamping structure can also include a spring guide column. One end of the guide column is fixedly connected with the base, and the other end of the guide column is fixedly connected with the pressing plate. The compression spring is sleeved on the guide column. The guide column is telescopic. The pressing plate is abutted on the gasket by the pressure of the compression spring to limit the longitudinal movement of the gasket.

[0050] In the embodiment of the present application, the clamping mechanism 102 can clamp a group of gaskets by setting the limiting clamping structure, and the group of gaskets can include a plurality of gaskets which can be clamped in the longitudinal direction. In one embodiment, the group of gaskets includes 6-8 gaskets. The total length of the group of gaskets is 180-220 mm. In one embodiment of the present application, the group of gaskets includes 7 gaskets. The limiting clamping structure of the present application provides a longitudinal elastic force to tightly press the group of gaskets. When a gasket is damaged, the compression spring can still tightly press the remaining gaskets. In one embodiment, at least 6 gaskets can be tightly pressed.

[0051] In one embodiment, the second limiting structure is detachably connected above the base body, and the second limiting structure includes a cover plate 1021. The cover plate 1021 is connected to the upper part of the copper sleeve 1022 by a screw. The material of the cover plate 1021 can be ordinary carbon steel.

[0052] In one embodiment, referring to Figure 5 , the second limiting structure includes a first plate 1021a and a second plate 1021b, and the second plate is downwardly bent to form an angle with the first plate to limit the lateral movement of the gasket.

[0053] In one embodiment, the angle formed by the downward bending of the second plate with the first plate is adapted to the cross-sectional shape of the gasket. It can be understood that the shape of the gasket is adapted to the cross-sectional shape of the inner cavity of the object to be welded, and specifically, the shape of the fitting weld. In the present embodiment, the object to be welded is a U-rib plate unit, and the gasket fits the longitudinal weld corner of the U-rib. The cross-sectional base angle (the angle of the fitting weld) of the gasket is adapted to the angle formed by the U-rib and the steel plate at the weld. In one embodiment, the angle formed by the U-rib and the steel plate is 76 degrees, and accordingly, the cross-sectional base angle of the gasket is 76 degrees, and the angle formed by the downward bending of the second plate with the first plate is 104 degrees.

[0054] For the vertical limiting and fixing of the gasket and the clamping mechanism, a fixed protruding structure can be provided on one side of the base body, and the side of the gasket in contact with the base body is provided with a structure matching the protruding structure of the base body. The shape of the protruding structure can be a mortise and tenon structure.

[0055] In one embodiment of the present application, the protruding structure of the base body 1022 is a longitudinal extension protrusion 1022a, and the side of the gasket in contact with the base body has a concave structure 1024a matching the protruding structure of the base body. Preferably, the cross-section of the protrusion is a circular arc shape. By using a circular arc protrusion, the side of the gasket is a circular arc concave structure, which is convenient to process, easy to position, and convenient to install and disassemble.

[0056] In the embodiment of the present application, the protruding structure of the base, the structure matching the protruding structure of the base on the side of the gasket in contact with the base, and the first plate and the second plate forming a certain angle of the second limiting structure can effectively fix the gasket vertically and horizontally, and facilitate disassembly and assembly.

[0057] In the embodiment of the present application, the side of the gasket in contact with the second plate of the second limiting structure has a boss 1024b, and the width of the boss is adapted to the thickness of the second plate. By setting the width of the boss of the gasket to be adapted to the thickness of the second plate, the side of the gasket in contact with the object to be welded can be on a line, and the fit is more close.

[0058] Referring to Figure 3 For the specific structure of the telescopic mechanism 103, in an embodiment, the base 1010 has two square tables on the side close to the clamping mechanism 102, each square table has a telescopic drive motor, and one end of the telescopic rod 1018 is located in the square table and connected to the telescopic drive motor. The other end of the telescopic rod 1018 is connected to the right angle joint 1031, and the other end of the right angle joint 1031 is connected to the copper sleeve 1022. After the telescopic rod 1018 is powered on, the telescopic drive motor on the side of the telescopic rod is turned forward, the telescopic rod is extended, the right angle joint 1031 is driven by the telescopic rod to push the gasket to the weld, so that the gasket is fitted with the weld, and after the welding is completed, the telescopic drive motor is reversed, the telescopic rod is retracted, the right angle joint 1031 is driven by the telescopic rod to retract, and the gasket 102 is away from the weld. Of course, the telescopic mechanism 103 can also include a rotating rod, which can rotate up and down, for lifting the copper sleeve 1022 upward. In an embodiment, the telescopic rod 1018 itself is also a rotating rod, which can rotate up and down.

[0059] In another embodiment of the present application, a welding gasket clamping structure is also provided, which includes the clamping mechanism as described above, and further includes a group of gaskets, the group of gaskets including a plurality of gaskets, and the plurality of gaskets can be longitudinally arranged and clamped in the clamping mechanism.

[0060] The gasket is a ceramic gasket; the group of gaskets includes 6-8 gaskets; and the length of the group of gaskets is 180-220 mm. It can be understood that the length of each gasket and the number of gaskets can be adjusted as needed. By providing a plurality of gaskets and setting the total length of the gasket group to be 180-220 mm, the gasket can still completely cover the welding points of the weld after a certain gasket is damaged.

[0061] In an embodiment of the present application, the welding gasket clamping structure is assembled by fixing the cover plate 1021 on the copper sleeve 1022 by screws, forming a gasket clamping space between the cover plate and the copper sleeve, which can limit the vertical and horizontal displacement of the gasket, then inserting the gaskets 1024 one by one from one end of the clamping groove 1027, after all the gaskets are inserted, pressing the gaskets, one end of the gasket abutting against the pressing plate 1025 of the limiting clamp structure, and further compressing the compression spring 1026, then inserting the limiting plate 1023 into the clamping groove 1027, and the gasket is limited in the longitudinal direction.

[0062] In another embodiment of the present application, a welding gasket tool is also provided, which comprises the welding gasket supporting device as described above, and further comprises a set of gaskets, which comprises a plurality of gaskets that can be clamped longitudinally in the clamping mechanism of the welding gasket supporting device.

[0063] The gasket is a ceramic gasket; the set of gaskets comprises 6-8 gaskets; and the length of the set of gaskets is 180-220 mm. By providing a plurality of gaskets and setting the total length of the gasket set to 180-220 mm, even if a gasket is damaged, it can still ensure that the gasket can completely cover the welding points of the weld.

[0064] In the embodiment, the gaskets are installed on the welding gasket supporting device by the above-mentioned assembly method of the welding gasket clamping structure. During welding, the welding gasket supporting device is driven by the trolley body to the initial end of the object to be welded, and the gaskets are aligned with the welds to be welded. The extension rod of the telescopic structure is opened, the gaskets are tightly pressed against the welds, the welding is started, the welding gasket supporting device is moved synchronously to ensure consistent movement speed with the welding gun, the welding is completed, the welding gasket supporting device stops moving, and the extension rod is retracted, and the gaskets are separated from the welds.

[0065] In another embodiment of the present application, referring to Figures 6-8 , a U-rib welding system is also provided, which comprises the welding gasket supporting device as described above or the welding gasket tool as described above, and further comprises an external welding device, which comprises an external welding gantry having a welding gun thereon.

[0066] In an embodiment, the U-rib welding system further comprises a support platform 105 and a wire winding machine 104. When not in use, the welding gasket supporting device 1000 is placed on the support platform 105, and the wire winding machine 104 is placed behind the support platform 105, and the cables are orderly wound on the wire winding machine 104, and the welding gasket supporting device 1000 is powered by the cables.

[0067] In another embodiment of the present application, a U-rib welding method is also provided, which comprises welding by using the U-rib welding system as described above.

[0068] Referring to Figure 6 which is a schematic view of the welding structure of the U-rib plate unit 100. The U-rib plate unit comprises a steel plate 1 and a U-rib 2. Each U-rib plate unit is welded by several U-ribs and steel plates, and an elongated and narrow cavity is formed between the steel plate 1 and the U-rib 2, and the joint of the steel plate and the U-rib forms a longitudinal weld. When actually used as a bridge deck plate, the steel plate 1 faces upward, and the U-rib 2 is underneath. The steel plate 1 is structural steel, which has a thickness B1≥12 mm, a longitudinal length up to 16 m, and a transverse width up to 6 m. When welding the outer corner joints at the lower corners of the two sides of the U-rib, the U-rib plate unit 100 is fixed on a welding counter-deformation jig (not shown in the figure).

[0069] Referring to Figure 7 which is a schematic view of the welding gasket support device 1000 in the U-rib according to the present application. Figure 8 which is a schematic view of the U-rib welding system according to an embodiment of the present application. The U-rib plate unit 100 is placed on a welding counter-deformation jig (not shown in the figure).

[0070] In an embodiment of the present application, the U-rib welding method comprises:

[0071] The welding gasket support device 1000 enters the inner cavity of the U-rib plate unit 100 from the first end (the left end in the figure) of the U-rib plate unit 100, which is the welding completion end;

[0072] The welding gasket support device 1000 travels to the second end (the right end in the figure) of the U-rib plate unit 100, which is the welding start end;

[0073] The clamping mechanism 102 is aligned with the weld joint to be welded;

[0074] The telescopic structure 103 is started, the telescopic rod 1018 is opened, and the gasket 1024 is pressed against the weld joint;

[0075] The welding is started, and the traveling device of the welding gasket support device 1000 is started synchronously to ensure that the speed of the trolley body and the welding gun is consistent;

[0076] The welding gasket support device 1000 travels back in the U-rib from the second end to the first end until the welding is completed;

[0077] The welding gasket support device 1000 returns to the support platform 105.

[0078] The cable is automatically wound and unwound by the winding machine 104 during the whole process.

[0079] Those skilled in the art can easily understand that the above description is only the preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A welding liner support device, characterized in that, The welding backing support device includes: a trolley body, a telescopic mechanism, and a clamping mechanism. The trolley body is used to move inside the object to be welded along the welding direction. The clamping mechanism is connected to the trolley body through the telescopic mechanism and is used to clamp the backing. The telescopic mechanism can drive the clamping mechanism so that the backing moves away from or closer to the weld. The clamping mechanism includes: a base, a first limiting structure, a second limiting structure, and a limiting clamping structure; the first limiting structure is disposed at one end of the base, and the limiting clamping structure is disposed at the other end of the base, the first limiting structure and the limiting clamping structure being used to longitudinally clamp the pad; the second limiting structure is disposed above the base, the base having a protruding structure, the second limiting structure and the protruding structure being used to limit the vertical movement of the pad; The first limiting structure is detachably disposed at one end of the base. The first limiting structure includes a slot and a limiting plate. The slot is located between the base and the second limiting structure, and the limiting plate can be inserted into the slot. The second limiting structure is detachably connected to the upper part of the base. The second limiting structure includes a first plate and a second plate. The second plate is bent downward to form a certain angle with the first plate to limit the lateral movement of the pad. The object to be welded is a U-rib plate unit, and the backing is fitted to the longitudinal weld angle of the U-rib; the bottom angle of the backing section is adapted to the angle formed by the U-rib and the steel plate at the weld of the U-rib plate unit.

2. The welding backing support device according to claim 1, characterized in that, The trolley body includes traveling wheels and guide wheels. The traveling wheels are located at the bottom of the trolley body and are used to support the movement of the trolley body. The guide wheels are located on both sides of the trolley body and are used to contact the inner wall of the object to be welded for positioning and guidance.

3. The welding backing support device according to claim 1, characterized in that, The telescopic mechanism includes a telescopic rod and a telescopic drive source. The telescopic drive source drives the telescopic rod to extend and retract, thereby driving the clamping mechanism so that the gasket moves away from or closer to the weld.

4. The welding backing support device according to claim 1, characterized in that, The limiting clamping structure includes a compression spring and a pressure plate. One end of the compression spring is connected to the base, and the other end of the compression spring abuts against one side of the pressure plate. The other side of the pressure plate is used to place a pad.

5. The welding backing support device according to claim 1, characterized in that, The protruding structure of the substrate is a longitudinally extending protrusion; the cross-section of the protrusion is arc-shaped.

6. The welding backing support device according to claim 1, characterized in that, The substrate is made of copper.

7. A welding gasket fixture, characterized in that: The welding liner fixture includes a welding liner support device as described in any one of claims 1-6, and the welding liner fixture further includes a set of liner pads, the set of liner pads including multiple liner pads, the multiple liner pads being longitudinally arranged and clamped in the clamping mechanism.

8. The welding backing fixture according to claim 7, characterized in that: The gasket is a ceramic gasket; the set of gaskets includes 6-8 gaskets; the total length of the set of gaskets is 180-220mm.

9. A U-rib welding system, characterized in that: The U-rib welding system includes a welding liner support device as described in any one of claims 1-6 or a welding liner tooling as described in any one of claims 7-8, and the U-rib welding system further includes an external welding device.

10. A U-rib welding method, characterized in that: The U-rib welding method includes welding using the U-rib welding system as described in claim 9.

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