Welding device for electromechanical installation of pumped storage power station

Abstract

The invention relates to the technical field of electromechanical welding, in particular to a welding device for electromechanical installation of a pumped storage power station, which comprises a base plate, a welding base cylinder, a first support ring, a second support ring, a first connecting rod, a second connecting rod, a third connecting rod and a fourth connecting rod, a connecting ring is fixedly installed on the welding base cylinder and located on one side of the bottom of the first supporting ring, a second supporting ring matched with the first supporting ring is fixedly installed on the top of the connecting ring, a first sawtooth groove is formed in the bottom of the first supporting ring, and a second sawtooth groove staggered with the first sawtooth groove is formed in the top of the second supporting ring. A T-shaped limiting rod drives a supporting rod to move up and down in a supporting column when moving between a first sawtooth groove and a second sawtooth groove, a supporting spring, a damping telescopic rod and a buffer plate in the supporting column enable a welding gun head on the supporting rod to reciprocate up and down during surrounding movement, the area of the welding position of a pressure steel pipe is enlarged, and the welding effect of the pressure steel pipe is improved. And the welding stability is improved.

Description

Technical Field

[0001] The invention relates to the technical field of electromechanical welding, in particular to a welding device for electromechanical installation of a pumped storage power station. Background Art

[0002] A pumped-storage power station is a hydroelectric power station that can pump water from an upstream reservoir to store energy. It is also called a storage hydroelectric power station. It can convert excess electricity when the grid load is low into high-value electricity during the peak period of the grid. It is also suitable for frequency and phase modulation, stabilizing the frequency and voltage of the power system, and is suitable for emergency backup. It can also improve the efficiency of thermal power stations and nuclear power stations in the system. The electromechanical installation of pumped-storage power stations requires welding. Welding is one of the key links in the installation of electromechanical equipment in pumped-storage power stations, especially for the connection of key components such as pressure steel pipes and stainless steel pipes. The welding quality directly affects the safe operation and power generation efficiency of the power station.

[0003] In order to reduce the labor intensity of welding and improve the welding efficiency, the two steel pipes are aligned when welding the pipe body, and then the welding point of the two steel pipes is circumferentially welded using a welding gun. However, this circumferential welding method causes the welding gun head to weld the steel pipe gap unstably, because the welding is circumferentially welded to the gap of the two steel pipes, and the welding gun is aligned with the center of the weld during circumferential welding. At this time, the position of the welding gun is fixed, which will result in a smaller welding range and a narrower welding area, so that the welding point of the two steel pipes is unstable. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a welding device for electromechanical installation of a pumped storage power station.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: comprising a base plate and a welding base tube, the welding base tube is fixedly installed on the top of the base plate, the top of the welding base tube is connected to a fixing frame for clamping the pressure steel pipe through a supporting foot, the inner bottom of the welding base tube is provided with a positioning frame for clamping and fixing the pressure steel pipe, an annular base ring is fixedly installed inside the fixing frame and the positioning frame, and a rotating assembly for welding the connection of two pressure steel pipes is provided on the top of the welding base tube, and the rotating assembly includes:

[0006] A first support ring is fixedly installed on the top of the welding base tube by bolts, and a connecting ring is fixedly installed on the bottom side of the first support ring of the welding base tube, and a second support ring that matches the first support ring is fixedly installed on the top of the connecting ring, a first serrated groove is arranged at the bottom of the first support ring, and a second serrated groove that is staggered with the first serrated groove is arranged on the top of the second support ring, the top of the connecting ring is connected to a welding toothed disk through a first limiting ring, and the welding toothed disk is movably connected to a support rod through a support column, and a welding gun head for welding the pressure steel pipe is installed on the top of the support rod, and a T-shaped limiting rod is fixedly installed on the support rod, and the T-shaped limiting rod movably passes through the first serrated groove and the second serrated groove.

[0007] A rotating gear disk is movably provided on the top of the annular base ring, a rotating gear is connected to the positioning frame and the fixing frame through a fixed rotating shaft, and the rotating gear is movably meshed with the rotating gear disk, and a rack plate is movably connected and penetrated on one side of the rotating gear in the fixing frame and the positioning frame, and the rack plate is movably meshed with the rotating gear.

[0008] As a preferred technical solution of the present invention, an annular base groove is opened at the top center of the annular base ring, and the annular base ring is slidably connected with an annular base block in the annular base groove. The rotating gear disk is fixedly installed on the top of the annular base block by bolts, and five rack plates are arranged in the positioning frame and the fixing frame. The top of the rack plate is fixedly installed by bolts to clamp and fix the pressure steel pipe with an arc-shaped clamp.

[0009] A servo motor is fixedly mounted on the inner top of the fixing frame and the positioning frame by bolts, and the output end of the servo motor is connected to the top end of one of the fixed rotating shafts.

[0010] As a preferred technical solution of the present invention, a plurality of support springs are fixedly installed inside the support column by bolts, a buffer plate movable on the support column is fixedly installed between the tops of the support springs by bolts, the support rod is fixedly installed on the top of the buffer plate by bolts, a damping telescopic rod is fixedly installed at the center of the inner bottom of the support column by bolts, and the top end of the damping telescopic rod is fixedly installed at the bottom center of the buffer plate.

[0011] A rotating motor is fixedly installed on the inner top of the welding base tube by bolts, and a rotating shaft is connected to the output end of the rotating motor. A driving gear is fixedly installed on one side of the rotating shaft by bolts, and the driving gear is movably meshed with the welding gear disc.

[0012] A first limiting groove is formed on the top of the first limiting ring, and a first limiting block is slidably connected to the first limiting groove of the first limiting ring. The top of the first limiting block is fixedly mounted on the bottom of the welding toothed disc by bolts.

[0013] As a preferred technical solution of the present invention, the bottom of the rotating shaft extends through the base plate, the second support ring is provided with a rotating groove, and the driving gear is movably engaged with the welding gear plate through the rotating groove.

[0014] An electric telescopic rod is fixedly installed at the center of the inner bottom of the positioning frame by bolts, and an adjustment base plate is fixedly installed at the top of the electric telescopic rod. The adjustment base plate is a circular structure and moves at the center between the arc-shaped clamping plates.

[0015] A dust suction component for dust suction and cooling the welding points of the pressure steel pipe is arranged in the base plate, and the dust suction component includes a dust suction cylinder fixedly installed inside the base plate by bolts, a rotating plate is fixedly installed in the base plate by bolts at the bottom end of the rotating shaft, a T-shaped connecting ring is fixedly installed at the bottom of the rotating plate by bolts, and the T-shaped connecting ring is movably connected with a hinged rod.

[0016] As a preferred technical solution of the present invention, a piston plate is movably arranged in the dust collector cylinder, a piston rod is fixedly installed on the piston plate by bolts, the hinged rod is connected to the piston rod by a hinge, and an air inlet pipe and an air outlet pipe are fixedly installed on the end of the dust collector cylinder away from the rotating disk by bolts.

[0017] An annular dust suction seat is fixedly mounted on the top of the welding toothed disc by bolts, a plurality of dust suction heads are evenly mounted on the top of the annular dust suction seat, and the air inlet pipe is connected to the bottom of the annular dust suction seat.

[0018] Compared with the prior art, the present invention can achieve the following beneficial effects:

[0019] 1. When the T-shaped limit rod moves between the first sawtooth groove and the second sawtooth groove, it drives the support rod to move up and down in the support column. The support spring, damping telescopic rod and buffer plate in the support column make the welding gun head on the support rod reciprocate up and down when it moves around, thereby expanding the area of ​​the pressure steel pipe welding and improving the stability of welding.

[0020] 2. The rotating gear is driven by the rotating toothed disc in the positioning frame to rotate synchronously, and the rotating gear meshes with the rack plate to move together, so that the arc-shaped clamping plate on the rack plate clamps and fixes the pressure steel pipe, and the height of the pressure steel pipe is adjusted in conjunction with the supporting bottom plate on the electric telescopic rod.

[0021] 3. The T-shaped connecting ring under the rotating disk is driven to rotate through the rotating shaft. The T-shaped connecting ring reciprocates the piston plate in the dust collection cylinder through the hinged rod, hinged part and piston rod. When the rotary welding is completed, the annular dust collection seat absorbs and purifies the fume under the action of the dust collection cylinder to improve the working environment.

[0022] 4. The welding gun head is welded around the aligned gap position of the two pressure steel pipes by meshing the active gear with the welding toothed disc. At the same time, the annular dust suction seat on the welding toothed disc is used to complete the dust suction, so as to achieve the effect of rotating dust suction while rotating welding, so that the dust collector can purify the air stably.

[0023] 5. The rotating gear is engaged with the rotating gear in the fixed frame to rotate, and the rotating gear engages with the rack plate to drive the arc clamp to clamp the pressure steel pipe. Five groups of arc clamps are used to clamp the pressure steel pipe in the center, making the arc clamp more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the structure inside the fixing frame of the present invention;

[0026] Figure 3 This is a schematic diagram of the internal structure of the welding base tube of the present invention;

[0027] Figure 4 It is a schematic diagram of the internal structure of the positioning frame of the present invention;

[0028] Figure 5 It is a structural schematic diagram of the driving gear of the present invention;

[0029] Figure 6 It is a structural schematic diagram of the annular base groove of the present invention;

[0030] Figure 7 It is a schematic structural diagram of the annular base ring of the present invention;

[0031] Figure 8 It is a schematic structural diagram of the first support ring of the present invention;

[0032] Fig. 9 It is a structural schematic diagram of the welding toothed disc of the present invention;

[0033] Fig.10 It is a schematic diagram of the internal structure of the base plate of the present invention;

[0034] Fig.11 It is a schematic diagram of the internal structure of the support column of the present invention;

[0035] Fig.12It is a structural schematic diagram of the rotating toothed disc of the present invention.

[0036] Among them: 10, base plate; 20, welding base tube; 21, first support ring; 22, connecting ring; 23, second support ring; 24, first sawtooth groove; 25, second sawtooth groove; 26, welding gear plate; 27, rotating motor; 28, rotating shaft; 29, driving gear; 30, fixing frame; 31, positioning frame; 32, annular base ring; 33, rotating gear plate; 34, fixed rotating shaft; 35, rotating gear; 36, rack plate; 37, arc clamping plate; 38, servo motor; 40, first limiting ring; 41, first limiting groove; 42, first limiting Block; 50, annular base groove; 51, annular base block; 60, rotating groove; 70, electric telescopic rod; 71, adjusting bottom plate; 80, dust suction cylinder; 81, rotating disk; 82, hinged rod; 83, piston plate; 84, air inlet pipe; 85, air outlet pipe; 86, annular dust suction seat; 87, T-shaped connecting ring; 88, piston rod; 89, hinged part; 90, pressure steel pipe; 91, support rod; 92, welding gun head; 93, T-shaped limit rod; 94, support column; 95, support spring; 96, buffer plate; 97, damping telescopic rod; 98, support foot. DETAILED DESCRIPTION

[0037] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work all belong to the protection scope of the present invention. The experimental methods in the following embodiments, unless otherwise specified, are conventional methods, and the materials, reagents, etc. used in the following embodiments, unless otherwise specified, can all be obtained from commercial channels.

[0038] Embodiment: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 and Fig.12As shown, it includes a base plate 10 and a welding base tube 20, the top of the base plate 10 is fixedly installed with the welding base tube 20, the top of the welding base tube 20 is connected to a fixing frame 30 for clamping the pressure steel pipe 90 through a supporting foot 98, the inner bottom of the welding base tube 20 is provided with a positioning frame 31 for clamping and fixing the pressure steel pipe 90, and an annular base ring 32 is fixedly installed inside the fixing frame 30 and the positioning frame 31, and the top of the welding base tube 20 is provided with a rotating assembly for welding the two pressure steel pipes 90, and the rotating assembly includes:

[0039] A first support ring 21 is fixedly installed on the top of the welding base tube 20 by bolts, a connecting ring 22 is fixedly installed on the bottom side of the first support ring 21 of the welding base tube 20, a second support ring 23 which matches the first support ring 21 is fixedly installed on the top of the connecting ring 22, a first sawtooth groove 24 is arranged at the bottom of the first support ring 21, a second sawtooth groove 25 which is staggered with the first sawtooth groove 24 is arranged at the top of the second support ring 23, a welding toothed disc 26 is connected to the top of the connecting ring 22 through a first limiting ring 40, and the welding toothed disc 26 is movably connected to the support rod 91 through a support column 94, and the support rod 91 A welding gun head 92 for welding the pressure steel pipe 90 is installed on the top, and the two pressure steel pipes 90 are stably welded by the welding gun head 92. The support rod 91 is fixedly installed with a T-shaped limit rod 93, and the T-shaped limit rod 93 moves between the first serrated groove 24 and the second serrated groove 25. When the T-shaped limit rod 93 moves in the first serrated groove 24 and the second serrated groove 25, it will drive the support rod 91 to move up and down stably in the support column 94. The support rod 91 simultaneously drives the welding gun head 92 to perform reciprocating welding up and down at the connection of the pressure steel pipe 90, thereby expanding the welding area and improving the welding stability performance.

[0040] A rotating toothed disc 33 is movably provided on the top of the annular base ring 32, and a rotating gear 35 is connected to the positioning frame 31 and the fixed frame 30 through a fixed rotating shaft 34, and the rotating gear 35 is movably meshed with the rotating toothed disc 33. A rack plate 36 is movably connected and penetrated on one side of the rotating gear 35 in the fixed frame 30 and the positioning frame 31, and the rack plate 36 is movably meshed with the rotating gear 35. The meshing between the rack plate 36 and the rotating gear 35 drives the arc clamping plate 37 to centrally clamp the pressure steel pipe 90. Five groups of arc clamping plates 37 complete the clamping and support of the pressure steel pipe 90, so that the arc clamping plate 37 clamps the pressure steel pipe 90 more firmly.

[0041] See also Figure 2 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Fig.12An annular base groove 50 is provided at the top center of the annular base ring 32, and an annular base block 51 is slidably connected to the annular base ring 32 in the annular base groove 50. A rotating gear disc 33 is fixedly installed on the top of the annular base block 51 by bolts. Five rack plates 36 are provided in the positioning frame 31 and the fixing frame 30. An arc-shaped clamping plate 37 for clamping and fixing the pressure steel pipe 90 is fixedly installed on the top of the rack plate 36 by bolts. The arc-shaped clamping plates 37 at five positions complete the firm clamping of the pressure steel pipe 90, thereby improving the stability of the pressure steel pipe 90 during the welding process.

[0042] A servo motor 38 is fixedly installed on the inner top of the fixing frame 30 and the positioning frame 31 by bolts, and the output end of the servo motor 38 is connected to the top of one of the fixed rotating shafts 34. The servo motor 38 on the fixed rotating shaft 34 drives the rotating gear 35 to perform stable rotational motion, and the rotating gear 35 engages with the rotating gear disc 33 to move synchronously.

[0043] See also Figure 3 , Figure 4 , Figure 5 , Figure 8 , Fig. 9 and Fig.11 A plurality of support springs 95 are fixedly installed inside the support column 94 by bolts, a buffer plate 96 movable on the support column 94 is fixedly installed between the tops of the support springs 95 by bolts, a support rod 91 is fixedly installed on the top of the buffer plate 96 by bolts, a damping telescopic rod 97 is fixedly installed at the center of the inner bottom of the support column 94 by bolts, and the top of the damping telescopic rod 97 is fixedly installed at the center of the bottom of the buffer plate 96. The support rod 91 on the buffer plate 96 is stably moved up and down by the damping telescopic rod 97 and the support springs 95, thereby expanding the welding area of ​​the welding gun head 92 and improving the stability of welding.

[0044] A rotating motor 27 is fixedly installed on the inner top of the welding base tube 20 by bolts, and a rotating shaft 28 is connected to the output end of the rotating motor 27. A driving gear 29 is fixedly installed on the rotating shaft 28 by bolts on one side of the second support ring 23, and the driving gear 29 is movably engaged with the welding toothed disc 26. The welding toothed disc 26 is driven by the driving gear 29 to perform stable rotational motion on the first limiting ring 40, thereby realizing annular surrounding welding of the gap between the pressure steel pipes 90 by the welding gun head 92.

[0045] A first limiting groove 41 is formed at the top of the first limiting ring 40, and a first limiting block 42 is slidably connected to the first limiting groove 41. The top of the first limiting block 42 is fixedly installed on the bottom of the welding toothed disc 26 by bolts, so that the welding toothed disc 26 is more stable and smooth during rotation.

[0046] See also Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 and Fig.10 The bottom of the rotating shaft 28 extends through the base plate 10, and the second support ring 23 is provided with a rotating groove 60. The driving gear 29 is movably engaged with the welding toothed disc 26 through the rotating groove 60, and the engagement between the driving gear 29 and the welding toothed disc 26 is stable and smooth.

[0047] An electric telescopic rod 70 is fixedly installed at the center of the inner bottom of the positioning frame 31 by bolts, and an adjusting base plate 71 is fixedly installed at the top of the electric telescopic rod 70. The adjusting base plate 71 is a circular structure, and the adjusting base plate 71 moves at the center between the arc-shaped clamping plates 37. The height of the pressure steel pipe 90 is adjusted by adjusting the base plate 71 so that the welding point of the pressure steel pipe 90 is located at the welding point of the welding gun head 92.

[0048] A dust suction assembly for dust suction and cooling the welding points of the pressure steel pipe 90 is provided in the base plate 10, and the dust suction assembly includes a dust suction cylinder 80 fixedly installed inside the base plate 10 by bolts, and a rotating disk 81 is fixedly installed at the bottom end of the rotating shaft 28 in the base plate 10 by bolts, and a T-shaped connecting ring 87 is fixedly installed at the bottom of the rotating disk 81 by bolts, and the T-shaped connecting ring 87 is movably connected to a hinged rod 82, and the hinged rod 82 cooperates with the T-shaped connecting ring 87 to drive the piston rod 88 to reciprocate.

[0049] See also Figure 3 , Figure 5 , Figure 6 , Figure 8 , Fig. 9 and Fig.10 A piston plate 83 is movably provided in the dust collection cylinder 80, and a piston rod 88 is fixedly installed on the piston plate 83 by bolts. The hinged rod 82 is connected to the piston rod 88 by a hinge 89. An inlet pipe 84 and an outlet pipe 85 are fixedly installed on the dust collection cylinder 80 at one end away from the rotating disk 81 by bolts. Both the outlet pipe 85 and the inlet pipe 84 are provided with a one-way valve. The inlet pipe 84 cooperates with the annular dust collection seat 86 to absorb the fume of welding dust, and then the absorbed fume is discharged unidirectionally to an external purifier through the outlet pipe 85, thereby completing the absorption and purification of polluted gases and greatly improving the welding environment.

[0050] An annular dust suction seat 86 is fixed on the top of the welding toothed disc 26 by bolts, and several dust suction heads are evenly installed on the top of the annular dust suction seat 86. The air inlet pipe 84 is connected to the bottom of the annular dust suction seat 86. The rotating welding toothed disc 26 cooperates with the dust suction head to effectively and stably absorb the fume generated during welding.

[0051] Working principle: insert the pressure steel pipe 90 to be welded into the welding base tube 20, so that the bottom of the pressure steel pipe 90 is against the adjustment bottom plate 71 at the top of the electric telescopic rod 70, and the height of the pressure steel pipe 90 in the welding base tube 20 is adjusted by the electric telescopic rod 70. After the adjustment is appropriate, the servo motor 38 in the positioning frame 31 drives the fixed shaft 34 to rotate, and the rotating gear 35 on the fixed shaft 34 engages to drive the rotating toothed disc 33 on the annular base ring 32 to rotate. At the same time, the rotating toothed disc 33 is movably engaged with another rotating gear 35 in the positioning frame 31, so that the five rotating gears 35 in the positioning frame 31 are all rotated synchronously. When the rotating gear 35 rotates, the meshing drives the rack plate 36 to move together, so that the arc clamping plate 37 on the rack plate 36 clamps and fixes the processed pressure steel pipe 90;

[0052] Another pressure steel pipe 90 is inserted into the fixing frame 30 so that the two pressure steel pipes 90 are aligned with each other. Similarly, the servo motor 38 in the positioning frame 31 drives the rotating gear 35 on the fixed shaft 34 to rotate. Similarly, the rotating gear 35 drives the rack plate 36 in the positioning frame 31 to move relative to each other. The arc-shaped side plate on the rack plate 36 completes the clamping and fixing of the top pressure steel pipe 90.

[0053] The rotating shaft 28 is driven to rotate by the rotating motor 27 in the welding base tube 20, and the driving gear 29 on the rotating shaft 28 engages with the rotating groove 60 to drive the welding toothed disk 26 on the first limiting ring 40 to rotate stably. During the movement, the welding toothed disk 26 drives the welding gun head 92 on the top of the support column 94 to perform a circular motion at the alignment point of the two pressure steel pipes 90. During the rotation process, the support column 94 drives the T-shaped limiting rod 93 on the support rod 91 to move between the first support ring 21 and the second support ring 23. When the T-shaped limiting rod 93 moves between the first serrated groove 24 and the second serrated groove 25, it drives the support rod 91 to move up and down in the support column 94. The support spring 95, the damping telescopic rod 97 and the buffer plate 96 in the support column 94 make the welding gun head 92 on the support rod 91 reciprocate up and down during the circular motion, thereby expanding the position of the welding point of the pressure steel pipe 90 and improving the stability of welding.

[0054] At the same time, during the welding process, the bottom end of the rotating shaft 28 drives the rotating disk 81 in the base plate 10 to perform stable rotational motion. When the rotating disk 81 rotates, it drives the hinged rod 82 to move through the T-shaped connecting ring 87. The hinged rod 82 will pull the piston plate 83 on the piston rod 88 to reciprocate in the dust collection tube 80. When negative pressure is generated in the dust collection tube 80, the dust collection head on the annular dust collection seat 86 will inhale the fume generated by welding into the dust collection tube 80 through the air inlet pipe 84 to prevent the polluted fume generated by welding from overflowing. When positive pressure is generated in the dust collection tube 80, the inhaled fume is pushed into the purification equipment through the air outlet pipe 85, and the welding environment is improved by the external purification equipment.

[0055] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A welding device for electromechanical installation of a pumped storage power station, comprising a base plate (10) and a welding base cylinder (20), characterized in that: The welding base tube (20) is fixedly mounted on the top of the base plate (10); the top of the welding base tube (20) is connected to a fixing frame (30) for clamping the pressure steel pipe (90) via a supporting foot (98); the inner bottom of the welding base tube (20) is provided with a positioning frame (31) for clamping and fixing the pressure steel pipe (90); an annular base ring (32) is fixedly mounted inside the fixing frame (30) and the positioning frame (31); a rotating assembly for connecting and welding two pressure steel pipes (90) is provided on the top of the welding base tube (20), and the rotating assembly comprises: A first support ring (21) is fixedly mounted on the top of the welding base tube (20) by means of bolts; a connecting ring (22) is fixedly mounted on one side of the bottom of the first support ring (21) of the welding base tube (20); a second support ring (23) matching the first support ring (21) is fixedly mounted on the top of the connecting ring (22); a first sawtooth groove (24) is arranged at the bottom of the first support ring (21); a second sawtooth groove (24) is arranged on the top of the second support ring (23) and is arranged in an alternating manner with the first sawtooth groove (24). The top of the connecting ring (22) is connected to a welding toothed disc (26) via a first limiting ring (40); the welding toothed disc (26) is movably connected to a support rod (91) via a support column (94); a welding gun head (92) for welding the pressure steel pipe (90) is installed on the top of the support rod (91); a T-shaped limiting rod (93) is fixedly installed on the support rod (91); and the T-shaped limiting rod (93) movably penetrates between the first sawtooth groove (24) and the second sawtooth groove (25); A rotating toothed disc (33) is movably provided on the top of the annular base ring (32); a rotating gear (35) is connected to the positioning frame (31) and the fixed frame (30) via a fixed rotating shaft (34), and the rotating gear (35) is movably meshed with the rotating toothed disc (33); a rack plate (36) is movably connected and penetrated on one side of the rotating gear (35) in the fixed frame (30) and the positioning frame (31), and the rack plate (36) is movably meshed with the rotating gear (35).

2. A welding device for electromechanical installation of a pumped storage power station according to claim 1, characterized in that: An annular base groove (50) is provided at the center of the top of the annular base ring (32), and an annular base block (51) is slidably connected to the annular base ring (32) in the annular base groove (50). The rotating gear disc (33) is fixedly mounted on the top of the annular base block (51) by bolts. Five rack plates (36) are provided in the positioning frame (31) and the fixing frame (30), and an arc-shaped clamping plate (37) for clamping and fixing the pressure steel pipe (90) is fixedly mounted on the top of the rack plate (36) by bolts.

3. A welding device for electromechanical installation of a pumped storage power station according to claim 1, characterized in that: A servo motor (38) is fixedly mounted on the inner top of each of the fixing frame (30) and the positioning frame (31) by means of bolts, and an output end of the servo motor (38) is connected to the top end of one of the fixed rotating shafts (34).

4. A welding device for electromechanical installation of a pumped storage power station according to claim 1, characterized in that: A plurality of support springs (95) are fixedly installed inside the support column (94) by means of bolts, a buffer plate (96) movable on the support column (94) is fixedly installed between the tops of the support springs (95) by means of bolts, the support rod (91) is fixedly installed on the top of the buffer plate (96) by means of bolts, a damping telescopic rod (97) is fixedly installed at the center of the inner bottom of the support column (94) by means of bolts, and the top end of the damping telescopic rod (97) is fixedly installed at the center of the bottom of the buffer plate (96).

5. A welding device for electromechanical installation of a pumped storage power station according to claim 2, characterized in that: A rotating motor (27) is fixedly mounted on the inner top of the welding base tube (20) by means of bolts, the output end of the rotating motor (27) is connected to a rotating shaft (28), a driving gear (29) is fixedly mounted on one side of the rotating shaft (28) by means of bolts, and the driving gear (29) is movably meshed with the welding toothed disc (26); A first limiting groove (41) is formed at the top of the first limiting ring (40), and a first limiting block (42) is slidably connected to the first limiting groove (41) of the first limiting ring (40), and the top of the first limiting block (42) is fixedly mounted on the bottom of the welding toothed disc (26) by means of bolts.

6. A welding device for electromechanical installation of a pumped storage power station according to claim 5, characterized in that: The bottom of the rotating shaft (28) extends through the base plate (10), the second supporting ring (23) is provided with a rotating groove (60), and the driving gear (29) is movably engaged with the welding toothed disc (26) through the rotating groove (60); An electric telescopic rod (70) is fixedly mounted at the center of the inner bottom of the positioning frame (31) by means of bolts, and an adjustment base plate (71) is fixedly mounted at the top of the electric telescopic rod (70). The adjustment base plate (71) is a circular structure, and the adjustment base plate (71) moves at the center between the arc-shaped clamping plates (37).

7. A welding device for electromechanical installation of a pumped storage power station according to claim 6, characterized in that: A dust collection assembly for dust collection and cooling the welding position of the pressure steel pipe (90) is arranged in the base plate (10), and the dust collection assembly includes a dust collection cylinder (80) fixedly mounted inside the base plate (10) by bolts, a rotating disk (81) is fixedly mounted in the base plate (10) by bolts at the bottom end of the rotating shaft (28), a T-shaped connecting ring (87) is fixedly mounted at the bottom of the rotating disk (81) by bolts, and the T-shaped connecting ring (87) is movably connected to a hinged rod (82).

8. A welding device for electromechanical installation of a pumped storage power station according to claim 7, characterized in that: A piston plate (83) is movably arranged in the dust collection cylinder (80), a piston rod (88) is fixedly mounted on the piston plate (83) by means of bolts, the hinged rod (82) is connected to the piston rod (88) by means of a hinge (89), and an air inlet pipe (84) and an air outlet pipe (85) are fixedly mounted on the end of the dust collection cylinder (80) away from the rotating disk (81) by means of bolts.

9. A welding device for electromechanical installation of a pumped storage power station according to claim 8, characterized in that: An annular dust suction seat (86) is fixedly mounted on the top of the welding toothed disc (26) by means of bolts, a plurality of dust suction heads are evenly mounted on the top of the annular dust suction seat (86), and the air inlet pipe (84) is connected to the bottom of the annular dust suction seat (86).

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