Position-adjustable supporting table for welding girth of opening pulling branch pipe of GIS high-pressure shell

Abstract

The invention discloses a position-adjustable supporting table for welding a girth of an opening pulling branch pipe of a GIS high-voltage shell, and relates to the technical field of GIS high-voltage shell production. The supporting table comprises a table base, at least two brackets sliding along the same track are arranged on the table base, and a driving device used for driving the brackets to move is arranged on the table base. According to the welding device, the two brackets used for supporting the GIS high-voltage shell are adopted and are independently driven, so that the distance can be adjusted, and the welding requirements of more GIS high-voltage shells with different lengths are met; and meanwhile, the two brackets can synchronously move in the same direction at the same time, and the position of the GIS high-voltage shell can be adjusted, so that welding operation can be efficiently carried out.

Description

Technical Field

[0001] This invention relates to the field of GIS high-pressure housing production technology, specifically to an adjustable support platform for welding the circumferential seam of the branch pipe of a GIS high-pressure housing. Background Technology

[0002] The high-voltage housing of GIS (Gas Insulated Switchgear) is a core component that ensures the insulation, sealing, and mechanical strength of high-voltage switchgear in power systems. It is mainly used in high-voltage / ultra-high-voltage power scenarios of 35kV and above. The materials are mainly aluminum alloy and stainless steel. The core requirements are high airtightness, high mechanical strength, corrosion resistance, and high dimensional accuracy.

[0003] In the circumferential welding of branch pipes of GIS high-pressure shells, whether manual or automatic welding is used, the welding position needs to be adjusted to complete the circumferential welding. In the existing technology, the tooling table used to support the GIS high-pressure shell for branch pipe circumferential welding can achieve displacement, but it does not have a length adjustment function and is applicable to only a limited range of welding situations. Summary of the Invention

[0004] The purpose of this invention is to provide an adjustable support platform for welding the circumferential seam of the branch pipe of the GIS high-pressure shell, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an adjustable support platform for circumferential welding of branch pipes of GIS high-pressure shell, comprising a base, wherein at least two brackets are provided on the base and slide along the same track, and a driving device for driving the brackets to move is provided on the base.

[0006] Preferably, the bracket includes a base, and the top of the base is provided with two inclined brackets, which together form a "V" shape.

[0007] Preferably, the driving device is a first lead screw motor. Two first lead screw motors are used and are respectively fixed on the base. The bracket is connected to the lead screw in the corresponding first lead screw motor through the corresponding lead screw slider.

[0008] Preferably, the surface of the inclined support is provided with a pad.

[0009] Preferably, a support roller is slidably disposed on the inclined bracket, the sliding direction of the support roller is consistent with the extension direction of the inclined bracket, and a drive mechanism is provided on the base for driving two corresponding support rollers in a set of brackets to move synchronously in opposite directions.

[0010] Preferably, a wheel seat is slidably provided on the top of the inclined support, and the support roller is rotatably mounted on the wheel seat.

[0011] Preferably, the driving mechanism includes a second lead screw motor fixed below the bracket, a corresponding lead screw slider is fitted on the lead screw of the second lead screw motor, a connecting rod is hinged on the wheel seat, and the other end of the connecting rod is hinged to the lead screw slider corresponding to the second lead screw motor.

[0012] Preferably, a motor base is provided below the base, and the motor base is fixedly connected to the base through a connecting frame. The second lead screw motor is fixed on the motor base, and the lead screw slider that cooperates with the second lead screw motor is slidably connected to the corresponding connecting frame through a linear guide rail and a slider.

[0013] Preferably, it also includes an angle adjustment platform, on which a flip plate with a horizontally arranged axis is rotatably mounted, and the base is rotatably mounted on the flip plate. On the bracket and located outside the two inclined supports, a wire rope fixing seat for fixing the wire rope and a tightening mechanism for tightening the wire rope are respectively provided.

[0014] Preferably, the wire rope fixing seat is fixed on a support frame on one side of the bracket, and the tightening mechanism includes a U-shaped wire rope tightening seat on the support frame on the other side of the bracket; a wire rope winding shaft is rotatably arranged inside the wire rope tightening seat, and ratchet teeth are coaxially fixed on the wire rope winding shaft; a ratchet stop block that cooperates with the ratchet teeth is also provided on the wire rope tightening seat; a wire rope hook post is also fixed on the wire rope winding shaft.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. The present invention uses two brackets for supporting the GIS high-pressure shell, which are driven independently and can achieve spacing adjustment, making it suitable for welding GIS high-pressure shells of various lengths. At the same time, the two brackets can move synchronously in the same direction, and the position of the GIS high-pressure shell can be adjusted to facilitate efficient welding operations.

[0016] 2. The present invention features a V-shaped inclined bracket design on the bracket, which, together with a wear-resistant plastic pad on the surface (Example 1) or a sliding support roller (Example 2), can not only effectively protect the surface of the shell from scratches, but also make adaptive adjustments according to the diameter of the shell.

[0017] 3. This invention drives the support rollers to slide along the inclined support through a second lead screw motor and a linkage mechanism, thereby achieving precise adjustment of the support roller spacing. It can be adapted to shells of various diameters and can assist the shells in circumferential rotation, greatly improving the convenience and accuracy of circumferential welding, reducing the intensity of manual operation, and improving welding efficiency and quality stability.

[0018] 4. The present invention has a compact overall structure and is easy to operate. Each driving component is driven by a lead screw motor, which has high adjustment accuracy and fast response speed, and can meet the strict requirements of GIS high-pressure shell circumferential weld for support stability and position accuracy.

[0019] 5. This invention allows for adjustment of the pitch and circumferential angles of the GIS high-pressure casing. By setting an angle adjustment platform and a rotating plate connected to it, the platform and bracket can be rotated around a horizontal axis, easily adjusting the pitch angle of the GIS high-pressure casing to meet the tilt angle requirements of different welding positions. Simultaneously, the platform can rotate on the rotating plate, forming a circumferential rotation, ensuring that the circumferential seam of the casing's branch pipe is uniformly and continuously positioned at the optimal welding position. This greatly facilitates the comprehensive implementation of circumferential seam welding operations, ensuring a smooth and efficient welding process. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the structure of Embodiment 2 of the present invention; Figure 3 This is a partial structural diagram of the present invention. Figure 1 (Example 2); Figure 4 This is a partial structural diagram of the present invention. Figure 2 (Example 2); Figure 5 This is the usage method of Embodiment 2 of the present invention. Figure 1 (Diagram showing the usage of small-sized GIS high-pressure housing); Figure 6 This is the usage method of Embodiment 2 of the present invention. Figure 2 (Diagram showing the usage of large-size GIS high-pressure housing); Figure 7 This is a plan view of the usage method of Embodiment 2 of the present invention; Figure 8 This is a structural diagram of Embodiment 3 of the present invention; Figure 9 This is a diagram illustrating the usage of Embodiment 3 of the present invention; Figure 10 This is a partial structure of Embodiment 3 of the present invention. Figure 1 ; Figure 11 This is a partial structure of Embodiment 3 of the present invention. Figure 2 ; Figure 12 The structure of the tightening mechanism in Embodiment 3 of the present invention Figure 1 ; Figure 13 The structure of the tightening mechanism in Embodiment 3 of the present invention Figure 2 .

[0021] In the picture: 1-Base, 11-First lead screw motor, 2-Bracket, 21-Base, 22-Slanted bracket, 23-Support frame, 24-Plate, 25-Motor seat, 26-Connecting frame, 3-Supporting roller, 31-Wheel seat, 4-Second lead screw motor, 5-Connecting rod, 6-Angle adjustment platform, 61-Flipping plate, 71-Drive motor one, 72-Driving gear one, 73-Driven gear one, 81-Drive motor two, 82-Driving gear two, 83-Driven gear two, 91-Wire rope tensioning seat, 92-Wire rope winding shaft, 93-Ratchet, 94-Ratchet stop, 95-Wire rope hook hanging post, 96-Adjusting socket, 10-Wire rope fixing seat, 101-Wire rope. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Example 1 like Figure 1 As shown, an adjustable support platform for welding the circumferential seam of the branch pipe of the GIS high-pressure shell includes a base 1, on which at least two brackets 2 are provided to slide along the same track, and the base 1 is provided with a driving device for driving the brackets 2 to move.

[0024] Specifically, in this embodiment, the pedestal 1 is a frame structure welded from steel plates.

[0025] Specifically, in this embodiment, the bracket 2 includes a base 21, and two inclined supports 22 are provided on the top of the base 21. The two inclined supports 22 form a "V" shape. The inner ends of the inclined supports 22 (with the opposite ends of the two inclined supports 22 as the inner ends) are directly fixedly connected to the base 21, and the outer ends of the inclined supports 22 (with the back ends of the two inclined supports 22 as the outer ends) are transitionally connected to the base 21 through a support frame 23. The base 21, the inclined supports 22, and the support frame 23 are preferably connected by welding or bolts.

[0026] The bracket 2 and the base 1 are connected by a sliding engagement via a linear guide rail and a slider.

[0027] In one specific embodiment, linear guide rails are respectively provided on both sides of the platform 1, and a slider that cooperates with the corresponding linear guide rail is provided at the bottom of the base 21. The sliding cooperation technology of the linear guide rail and the slider is a conventional existing technology, and the specific principle will not be elaborated here.

[0028] In this embodiment, two sets of brackets 2 are preferred.

[0029] In one specific implementation, the driving device is a lead screw motor, which is tentatively referred to as the first lead screw motor 11 for ease of description. Two first lead screw motors 11 are used and fixed to the base 1 respectively. The corresponding lead screw in the first lead screw motor 11 extends along the sliding direction of the bracket 2. The base 1 is also provided with a lead screw seat that cooperates with the corresponding lead screw. The bracket 2 is provided with a lead screw slider, which is preferably located at the bottom of the base 21. The bracket 2 is connected to the lead screw in the corresponding first lead screw motor 11 through the corresponding lead screw slider. The two brackets 2 are driven by independent first lead screw motors 11, enabling synchronous movement of the two brackets in the same direction or synchronous movement towards each other, that is, moving simultaneously in one direction and simultaneously moving closer or further apart.

[0030] Furthermore, the surface of the inclined bracket 22 is provided with a pad 24. The pad 24 is preferably fixed to the support frame 23 by bolts. The pad 24 is made of wear-resistant plastic material, such as nylon or polytetrafluoroethylene, and its thickness is set to 2-6cm. It can effectively avoid scratching the surface of the GIS high-pressure shell when the bracket supports the branch pipe of the GIS high-pressure shell. At the same time, it adapts to the slight unevenness of the shell surface through its own elastic deformation, thereby improving the stability of the support.

[0031] Working Principle: During use, the distance between the two brackets 2 is adjusted according to the required length of the GIS high-pressure shell for welding branch pipes, ensuring that the two brackets 2 can stably support both ends of the GIS shell or a suitable position. Two first lead screw motors 11 on the control base 1 drive the corresponding lead screws to rotate, which in turn moves the corresponding lead screw sliders, causing the brackets 2 to slide along the linear guide rails on the base 1 until the distance between the two brackets 2 meets the support requirements of the shell. The GIS high-pressure shell is placed on the "V"-shaped inclined supports 22 of the two brackets 2. At this time, the outer surface of the shell contacts the pad 24 on the inner side of the inclined support 22. The wear-resistant plastic material of the pad 24 protects the shell surface from scratches. When it is necessary to adjust the welding position of the shell, the first lead screw motors 11 can be controlled to move the two brackets 2 synchronously and in the same direction, thereby fine-tuning the position of the two brackets 2 and causing the shell to translate to adapt to the positional requirements of the shell at different stages of circumferential welding.

[0032] Example 2 like Figures 2 to 7As shown, a support roller 3 is slidably disposed on the inclined bracket 22, and the sliding direction of the support roller 3 is consistent with the extension direction of the inclined bracket 22. The base 21 is provided with a drive mechanism for driving two corresponding support rollers 3 in a set of brackets 2 to move synchronously towards each other.

[0033] In one specific embodiment, a wheel seat 31 is slidably disposed on the top of the inclined support 22, and the support roller 3 is rotatably disposed on the wheel seat 31. Preferably, the wheel seat 31 and the inclined support 22 are connected by a linear guide rail and a slider in a sliding engagement.

[0034] In one specific embodiment, the driving mechanism includes a second lead screw motor 4 fixed below the bracket 2, the lead screw corresponding to the second lead screw motor 4 extends vertically, a corresponding lead screw slider is fitted on the lead screw of the second lead screw motor 4, a connecting rod 5 is hinged on the wheel seat 31, and the other end of the connecting rod 5 is hinged to the lead screw slider corresponding to the second lead screw motor 4.

[0035] Specifically, a motor base 25 is provided below the base 21. The motor base 25 is fixedly connected to the base 21 through a connecting frame 26. The second lead screw motor 4 is fixed on the motor base 25. The lead screw slider that cooperates with the second lead screw motor 4 is slidably connected to the corresponding connecting frame 26 through a linear guide rail and a slider.

[0036] Specifically, the bottom of the wheel seat 31 is provided with a hinge seat that cooperates with one end of the connecting rod 5; the side of the lead screw slider that cooperates with the second lead screw motor 4 is provided with a hinge seat that cooperates with the other end of the connecting rod 5.

[0037] Remove the pad 24, and the rest is the same as in Embodiment 1.

[0038] Working principle: like Figure 7 As shown, after the GIS high-pressure housing is placed on the support roller 3, the line connecting the center of the GIS high-pressure housing and the support roller 3 is perpendicular to the extension direction of the inclined bracket 22. In this way, the support roller 3 provides support for the GIS high-pressure housing, and the force on the support roller 3 is better distributed to the bracket 2.

[0039] When the spacing between two support rollers 3 within a set needs to be adjusted, the second lead screw motor 4 drives its lead screw to rotate, causing the corresponding lead screw slider to move vertically (up or down). Since the two ends of the connecting rod 5 are hinged to the lead screw slider and the wheel seat 31 respectively, the vertical movement of the lead screw slider is transmitted to the wheel seat 31 through the connecting rod 5, causing the wheel seats 31 on the two inclined supports 22 to move synchronously towards or away from each other along the extension direction of the inclined supports 22, carrying the support rollers 3. When the two support rollers 3 move synchronously towards each other, the distance between them decreases, suitable for supporting GIS high-pressure housings with smaller diameters; when the two support rollers 3 move synchronously away from each other, the distance between them increases, suitable for supporting GIS high-pressure housings with larger diameters.

[0040] This adjustment allows the shell's posture on the support rollers 3 to accommodate the lifting and welding needs of GIS high-pressure shells of various sizes. The support rollers 3 assist the GIS high-pressure shell in smoother circumferential rotation, enabling the welding equipment to perform welding operations at various angles of the circumferential seam. For example, during welding, after completing welding of a certain area of ​​the circumferential seam, an external rotating device (or manual assistance) allows the shell to rotate smoothly by a certain angle before proceeding to the next area, ensuring the continuity and accuracy of the welding process. Simultaneously, the rotating design of the support rollers 3 effectively reduces friction during shell rotation, preventing damage to the shell surface due to sliding friction.

[0041] Example 3 like Figures 8 to 13 As shown, it also includes an angle adjustment platform 6, on which a horizontally arranged flip plate 61 is rotatably mounted. The base 1 is rotatably mounted on the flip plate 61. The bracket 2 is provided with a wire rope fixing seat 10 for fixing the wire rope 101 and a tightening mechanism for tightening the wire rope 101 on the outer side of the two inclined supports 22 (with the opposite side of the two inclined supports 22 as the outer side).

[0042] The angle adjustment platform 6 is provided with a first drive assembly for driving the flip plate 61 to rotate, and the flip plate 61 is provided with a second drive assembly for driving the base 1 to rotate.

[0043] Specifically, in this embodiment, the two sides of the flip plate 61 are provided with rotating shafts (not shown in the figure), and the top of the angle adjustment platform 6 is provided with a bearing seat (not shown in the figure) that cooperates with the rotating shafts.

[0044] In one specific embodiment, the drive assembly includes a drive motor 71 fixed to the angle adjustment platform 6. A drive gear 72 is coaxially fixed to the power output shaft of the drive motor 71, and a driven gear 73 is coaxially fixed to the rotating shaft corresponding to the tilting plate 61. The drive gear 72 meshes with the driven gear 73. By rotating the drive motor 71 in both directions, the drive gear 72 can be driven to rotate, thereby driving the driven gear 73 and the tilting plate 61 to rotate around its horizontal axis, realizing the overall pitch angle adjustment of the platform 1. This adjusts the tilt angle of the GIS high-pressure housing to adapt to the circumferential weld requirements of the branch pipe at different spatial angles. For example, when it is necessary to weld the circumferential weld at the top or bottom of the housing, the angle of the tilting plate 61 can be adjusted to place the circumferential weld to be welded in a horizontal or tilted position that facilitates welding operations, improving the accessibility and ease of operation of the welding.

[0045] The second drive assembly includes a second drive motor 81 fixed to the flipping plate 61. A second drive gear 82 is coaxially fixed to the power output shaft of the second drive motor 81. A bearing seat (not shown in the figure) is provided on the flipping plate 61. A rotating shaft that mates with the corresponding bearing seat on the flipping plate 61 is provided at the bottom of the platform 1. A second driven gear 83 is coaxially fixed to the rotating shaft at the bottom of the platform 1. The second drive gear 82 meshes with the second driven gear 83. By rotating the second drive motor 81 in both directions, the second drive gear 82 can be driven to rotate, thereby driving the platform 1 to rotate and achieving circumferential angle adjustment of the GIS high-pressure shell. This allows different parts of the circumferential seam to be rotated to the optimal welding position without moving the welding equipment or manually rotating the bulky shell during the welding process, further improving the flexibility and efficiency of the welding operation.

[0046] In one specific embodiment, the wire rope fixing seat 10 is fixed to the support frame 23 on one side of the bracket 2. The tightening mechanism includes a U-shaped wire rope tightening seat 91 on the other side of the support frame 23. A wire rope winding shaft 92 is rotatably arranged inside the wire rope tightening seat 91. A ratchet 93 is coaxially fixed on the wire rope winding shaft 92. A ratchet stop 94 that cooperates with the ratchet 93 is also provided on the wire rope tightening seat 91. A wire rope hook post 95 is also fixed on the wire rope winding shaft 92. In use, one end of the wire rope 101 is fixed to the wire rope fixing seat 10, and the other end of the wire rope 101 is arranged in a loop shape and can be sleeved on the wire rope hook post 95. By rotating the wire rope winding shaft 92, the wire rope 101 is tightened, so that the wire rope 101 is auxiliaryly fixed from the outside of the GIS high-pressure housing, ensuring that the GIS high-pressure housing is completely fixed on the bracket 2. During the tightening process, the ratchet 93 engages with the ratchet stop 94 to prevent the wire rope winding shaft 92 from reversing after tightening, thus ensuring a stable and reliable tightening force of the wire rope 101 on the housing. The wire rope winding shaft 92 is also equipped with an adjustment hole 96, allowing the operator to apply torque for tightening by inserting a pin or other tool to rotate the shaft.

[0047] The rest is the same as in Example 1 or Example 2.

[0048] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An adjustable support platform for circumferential welding of branch pipes at the outlet of a GIS high-pressure shell, characterized in that: Includes a base (1), on which at least two brackets (2) are provided that slide along the same track, and on which a driving device is provided for driving the brackets (2) to move.

2. The adjustable support platform for circumferential welding of GIS high-pressure shell branch pipe according to claim 1, characterized in that: The bracket (2) includes a base (21), and two inclined supports (22) are provided on the top of the base (21), and the two inclined supports (22) form a "V" shape.

3. The adjustable support platform for circumferential welding of GIS high-pressure shell branch pipe according to claim 1, characterized in that: The driving device is a first lead screw motor (11). Two first lead screw motors (11) are used and are respectively fixed on the base (1). The bracket (2) is connected to the lead screw in the corresponding first lead screw motor (11) through the corresponding lead screw slider.

4. The adjustable support platform for circumferential welding of the branch pipe of a GIS high-pressure shell according to claim 2, characterized in that: The surface of the inclined support (22) is provided with a pad (24).

5. The adjustable support platform for circumferential welding of the branch pipe of a GIS high-pressure shell according to claim 2, characterized in that: The inclined bracket (22) is slidably provided with a roller (3), and the sliding direction of the roller (3) is consistent with the extension direction of the inclined bracket (22). The base (21) is provided with a driving mechanism for driving two corresponding rollers (3) in a set of brackets (2) to move synchronously towards each other.

6. The adjustable support platform for circumferential welding of the branch pipe of a GIS high-pressure shell according to claim 5, characterized in that: The top of the inclined support (22) is slidably provided with a wheel seat (31), and the support roller (3) is rotatably provided on the wheel seat (31).

7. The adjustable support platform for circumferential welding of GIS high-pressure shell branch pipe according to claim 6, characterized in that: The drive mechanism includes a second lead screw motor (4) fixed below the bracket (2). The lead screw of the second lead screw motor (4) is fitted with a corresponding lead screw slider. A connecting rod (5) is hinged on the wheel seat (31). The other end of the connecting rod (5) is hinged to the lead screw slider corresponding to the second lead screw motor (4).

8. The adjustable support platform for circumferential welding of GIS high-pressure shell branch pipe according to claim 7, characterized in that: A motor base (25) is provided below the base (21). The motor base (25) is fixedly connected to the base (21) through a connecting frame (26). The second lead screw motor (4) is fixed on the motor base (25). The lead screw slider that cooperates with the second lead screw motor (4) is slidably connected to the corresponding connecting frame (26) through a linear guide rail and a slider.

9. A support platform for circumferential welding of a GIS high-pressure shell branch pipe according to any one of claims 1-7, characterized in that: It also includes an angle adjustment platform (81), on which a flip plate (61) with a horizontally arranged axis is rotatably mounted. The base (1) is rotatably mounted on the flip plate (61). The bracket (2) and located outside the two inclined supports (22) are respectively provided with a wire rope fixing seat (10) for fixing the wire rope (101) and a tightening mechanism for tightening the wire rope (101).

10. A support platform for circumferential welding of a branch pipe with adjustable GIS high-pressure shell according to claim 9, characterized in that: The wire rope fixing seat (10) is fixed on the support frame (23) on one side of the bracket (2). The tightening mechanism includes a U-shaped wire rope tightening seat (91) on the support frame (23) on the other side of the bracket (2). A wire rope winding shaft (92) is rotatably arranged inside the wire rope tightening seat (91). A ratchet (93) is coaxially fixed on the wire rope winding shaft (92). A ratchet stop (94) that cooperates with the ratchet (93) is also provided on the wire rope tightening seat (91). A wire rope hook post (95) is also fixed on the wire rope winding shaft (92).

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