A welding device for high-head penstocks and spiral casings of pumped-storage power stations

Abstract

The present invention discloses a welding device for high-head penstocks and volute casings of pumped-storage power stations, which relates to the technical field of water conveyance systems of pumped-storage power stations. The present invention includes a bottom plate, the middle part of the right side of the upper end face of the bottom plate is fixedly connected with an installation structure, a driving structure is arranged in the inner cavity of the installation structure, a clamping structure is symmetrically and slidably connected along the center line in the inner cavity of the installation structure, a limiting structure is rotatably connected to the upper end face of the clamping structure, and a placing structure is fixedly connected to the middle part of the lower end face of the inner cavity of the installation structure; self-locking structures are symmetrically arranged along the center line on the upper end face of the sliding structure, and a control structure is fixedly connected to the middle part of the upper end face of the sliding structure. Through the clamping structure on the installation structure, the limiting structure is installed and adjusted during use, and then the front and rear end faces of the volute casing are fitted and clamped through the telescopic sleeve, which facilitates the installation and placement of the volute casing by personnel during use, achieves the fixation and limitation of the volute casing during use, and thus facilitates the calibration of the volute casing and the penstock by personnel.

Description

Technical Field

[0001] The present invention relates to the technical field of water conveyance systems for pumped - storage power stations, and particularly to a welding device for high - head penstocks and scroll cases of pumped - storage power stations. Background Art

[0002] A water turbine is a machine that converts water energy into rotational mechanical energy, thereby driving a generator to generate electric energy. The function of the scroll case of a water turbine is to make the water flow generate circular motion and guide the water flow to enter the water turbine evenly and axially symmetrically. Reaction turbines with medium and high heads all adopt the method of scroll - case water intake to improve the water flow pattern. Therefore, when in use, it is necessary to weld the scroll case and the penstock to convey the water flow.

[0003] The existing welding structure is simple, unable to calibrate and position between the high - head penstock and the scroll case. At the same time, the clamping mechanisms for the penstock and the scroll case of some welding devices are manually calibrated and connected by workers, with low work efficiency and poor docking accuracy.

[0004] Therefore, the existing welding device for high - head penstocks and scroll cases of pumped - storage power stations cannot meet the requirements in actual use. So, there is an urgent need for improved technology in the market to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a welding device for high - head penstocks and scroll cases of pumped - storage power stations, which solves the problems raised in the above - mentioned background art through the following settings.

[0006] To solve the above - mentioned technical problems, the present invention is realized through the following technical solutions:

[0007] The present invention is a welding device for high - head penstocks and scroll cases of pumped - storage power stations, including a bottom plate. The middle part on the right side of the upper end surface of the bottom plate is fixedly connected with an installation structure. A driving structure is arranged inside the installation structure. The inside of the installation structure is symmetrically slidably connected along the center line with a clamping structure. The upper end surface of the clamping structure is rotatably connected with a limiting structure. The upper end surface of the limiting structure is hinged with a limiting structure. The middle part of the lower end surface inside the installation structure is fixedly connected with a placing structure;

[0008] The left side of the upper end surface of the bottom plate is fixedly connected with a sliding structure. The middle part of the lower end surface inside the sliding structure is fixedly connected with an adjusting structure. The upper end surface of the sliding structure is symmetrically provided with a self - locking structure along the center line. The middle part of the upper end surface of the sliding structure is fixedly connected with a control structure. The upper end surface of the self - locking structure is fixedly connected with a lifting structure. The upper end surface of the lifting structure is fixedly connected with a pressing structure. The upper end surface of the pressing structure is symmetrically slidably connected along the center line with a fixing structure.

[0009] Preferably, the installation structure includes a fixing block fixedly connected to the right side of the upper end surface of the bottom plate. A placing block is fixedly connected to the upper end surface of the fixing block. An installation groove is formed in the middle of the upper end surface of the placing block. A driving structure is arranged on the upper end surface of the fixing block. Two clamping structures are symmetrically and slidably connected along the central line in the inner cavity of the installation groove.

[0010] Preferably, the driving structure includes a driving motor fixedly connected to the rear part on the right side of the upper end surface of the fixing block. Two rotating rods are symmetrically and rotatably connected along the central line in the inner cavity of the installation groove. A transmission structure is rotatably connected to the front end surface of the placing block. The transmission structure includes two pulleys symmetrically rotatably connected to the front end surface of the placing block. A belt is connected to the outer surfaces of the two pulleys. The front end surface rotating shafts of the two rotating rods penetrate through the placing block and are respectively fixedly connected to the two pulleys. The rear end surface of the right rotating rod penetrates through the placing block and is fixedly connected to the output end of the driving motor. Two sections of threads with opposite directions are formed on the outer surface of the rotating rod.

[0011] Preferably, the clamping structure includes two sliders symmetrically and slidably connected in the inner cavity of the installation groove. A telescopic sleeve is fixedly connected to the upper end surface of each of the two sliders. A plurality of clamping springs are evenly fixedly connected to the lower end surface of the inner cavity of the telescopic sleeve. The upper end surface of the clamping spring is fixedly connected to a telescopic inner plate. The telescopic inner plate is slidably connected in the inner cavity of the telescopic sleeve. A limiting structure is hinged to the upper end surface of the telescopic inner plate.

[0012] Preferably, the limiting structure includes a rotating shaft fixedly connected to the upper end surface of the telescopic inner plate. A torsion spring is movably sleeved in the inner cavity of the rotating shaft. A limiting plate is fixedly connected to the end of the outer surface of the rotating shaft far away from the telescopic inner plate. The two ends of the torsion spring in the inner cavity of the rotating shaft are respectively fixedly connected to the telescopic inner plate and the limiting plate. The telescopic inner plate is hinged to the limiting plate through the rotating shaft. A cushion block is fixedly connected to the middle of the lower end surface of the limiting plate. The placing structure includes a placing rack fixedly connected to the middle of the lower end surface of the inner cavity of the installation groove. A plurality of placing grooves are evenly formed on the upper end surface of the placing rack. A spring is fixedly connected to the lower end surface of each of the inner cavities of the placing grooves. The upper end surface of the spring is fixedly connected to a telescopic column. The telescopic column is slidably connected in the inner cavity of the placing groove.

[0013] Preferably, the sliding structure includes two slide rails symmetrically and fixedly connected to the left side of the upper end surface of the bottom plate. A placing plate is slidably connected to the upper end surface of the slide rails through a connecting block. A self-locking structure and a control structure are arranged on the upper end surface of the placing plate. An adjusting structure is arranged in the middle of the lower end surface between the two slide rails. The adjusting structure includes a rotating frame fixedly connected to the upper end surface of the bottom plate between the two slide rails. An adjusting threaded rod is fixedly connected to the middle of the inner cavity of the rotating frame. An adjusting motor is fixedly connected to the upper end surface of the bottom plate on the right side of the rotating frame. The right end surface rotating shaft of the adjusting threaded rod penetrates through the rotating frame and is fixedly connected to the output end of the adjusting motor. An adjusting block is fixedly connected to the middle of the lower end surface of the placing plate. The adjusting threaded rod penetrates through the adjusting block and is in threaded connection with the adjusting block.

[0014] Preferably, the self-locking structure includes worm gears symmetrically and rotatably connected to the four corners of the upper end surface of the placement plate. On the left and right sides between the two worm gears on the upper end surface of the placement plate, there are worm shafts rotatably connected through brackets. The worm shafts are meshed with the worm gears. Between the adjacent two worm shafts, there is a transmission gear rotatably connected through a connecting bracket of the worm shaft. The front and rear sides of the shafts between the adjacent two worm shafts all penetrate through and are fixedly connected to the transmission gear. On the upper end surface of the placement plate, a control structure is arranged between the two transmission gears, and a lifting structure is fixedly connected to the upper end surface of the worm gear.

[0015] Preferably, the control structure includes a toothed belt drivingly connected to the outer surfaces of the two transmission gears. In the middle of the inner cavity of the toothed belt, there is a driving gear drivingly connected. In the middle of the upper end surface of the placement plate, there is a control motor fixedly connected. The output end of the control motor is fixedly connected to the driving gear. The lifting structure includes a threaded rod fixedly connected to the upper end surface of the worm gear. The outer surface of the threaded rod is threadedly connected with a threaded sleeve. The upper end of the threaded sleeve is fixedly connected with a lifting plate. On the upper end surface of the lifting plate, there is an extrusion structure fixedly connected.

[0016] Preferably, the extrusion structure includes sliding rods symmetrically fixed to the upper end surface of the lifting plate along the center line. On the front and rear side end faces of the sliding rods, there are limit frames fixedly connected. On the front and rear side end faces of the inner cavity of the limit frames, there are hydraulic telescopic rods fixedly connected evenly. On the upper end surface of the sliding rods, there is a fixing structure slidably connected. The end of the hydraulic telescopic rod far away from the limit frame is fixedly connected to the fixing structure.

[0017] Preferably, the fixing structure includes fixing blocks two slidably connected to the upper end surface of the sliding rods symmetrically along the center line. On one side of the upper end surface of the fixing blocks two, there are mounting plates fixedly connected. Between the mounting plates away from each other, there are support frames fixedly connected between the fixing blocks two. On the front and rear side end faces between the two mounting plates, there are fixing frames fixedly connected.

[0018] The present invention has the following beneficial effects:

[0019] 1. The present invention installs and places the driving structure and the placing structure through the installation structure provided on the upper end face of the bottom plate. During use, the clamping structure is placed through the installation groove. Through the driving structure on the installation structure, during use, the distance between the two clamping structures is adjusted by the rotating rod. Furthermore, through the transmission structure, the two rotating rods on both sides rotate in the same direction simultaneously. Through the clamping structure on the installation structure, the limiting structure is installed and adjusted during use. Then, the front and rear end faces of the volute are clamped and fitted through the telescopic sleeve. Through the limiting structure on the upper end face of the clamping structure, a downward pressure is provided to the volute during use. Thus, when fixing the volute, the volute is prevented from sliding in the vertical direction. Through the placing structure on the installation structure, it is convenient for personnel to install and place the volute during use. Then, through the expansion and contraction of the spring and the telescopic column in the inner cavity of the placing rack, the placing structure matches the lower part of the outer surface of the volute, which facilitates the installation and placement of the volute by personnel during use, achieves the fixation and limitation of the volute during use, and thus facilitates the calibration of the volute and the steel pipe by personnel.

[0020] 2. The present invention installs and places the self-locking structure and the control structure through the sliding structure provided on the upper end face of the bottom plate. During use, the placing plate is horizontally slid through the slide rail. Through the adjustment structure on the upper end face of the bottom plate, during use, the placing plate is adjusted by the adjustment screw rod. Then, the relative position of the placing plate is adjusted and fixed by the forward and reverse rotation of the adjustment motor. Through the self-locking structure on the upper end face of the sliding structure, the lifting structure is installed and placed during use. Then, after adjusting the lifting structure, it is self-locked and fixed through the worm gear and the worm to prevent the lifting structure from moving. Through the control structure on the upper end face of the sliding structure, the self-locking structure is driven and adjusted during use. Then, the forward and reverse rotation of the worm gear is adjusted by the forward and reverse rotation of the output end of the control motor. Through the lifting structure on the upper end face of the self-locking structure, the extrusion structure is installed and placed during use. Then, the horizontal height of the fixing structure is adjusted through the screw rod and the threaded sleeve. Through the extrusion structure on the upper end face of the lifting structure, the fixing structure is installed and placed during use. Then, the gap between the fixing structures is adjusted through the hydraulic telescopic rod. Through the fixing structure on the upper end face of the extrusion structure, the high-head penstock is fixed through the fixing frame during use. Furthermore, the force on the mounting plate is made uniform through the support frame.

[0021] Of course, it is not necessary for any product implementing the present invention to achieve all the above-mentioned advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0023] Figure 1 Schematic diagram of the front view three-dimensional structure of the present invention;

[0024] Figure 2 Schematic diagram of the top view three-dimensional structure of the present invention;

[0025] Figure 3 Schematic diagram of the half-section three-dimensional structure of the present invention;

[0026] Figure 4 Schematic diagram of the installation structure of the fixing structure of the present invention;

[0027] Figure 5 Schematic diagram of the installation structure of the limiting structure of the present invention;

[0028] Figure 6 For the present invention Figure 4 Schematic diagram of the enlarged structure of area A in;

[0029] Figure 7 For the present invention Figure 5 Schematic diagram of the enlarged structure of area B in.

[0030] In the drawings, the list of components represented by each reference numeral is as follows:

[0031] 1 - bottom plate, 2 - installation structure, 21 - fixing block, 22 - placing block, 23 - installation groove, 3 - driving structure, 31 - driving motor, 32 - rotating rod, 33 - transmission structure, 331 - pulley, 332 - belt, 4 - clamping structure, 41 - slider, 42 - telescopic sleeve, 43 - clamping spring, 44 - telescopic inner plate, 5 - limiting structure, 51 - rotating shaft, 52 - limiting plate, 53 - cushion block, 6 - placing structure, 61 - placing rack, 62 - telescopic column, 7 - sliding structure, 71 - slide rail, 72 - placing plate, 73 - adjusting block, 8 - adjusting structure, 81 - rotating frame, 82 - adjusting threaded rod, 83 - adjusting motor, 9 - self-locking structure, 91 - worm gear, 92 - worm, 93 - transmission gear, 10 - control structure, 101 - toothed belt, 102 - driving gear, 103 - control motor, 11 - lifting structure, 111 - threaded rod, 112 - threaded sleeve, 113 - lifting plate, 12 - extrusion structure, 121 - sliding rod, 122 - limiting frame, 123 - hydraulic telescopic rod, 13 - fixing structure, 131 - second fixing block, 132 - mounting plate, 133 - support frame, 134 - fixing frame. Detailed implementation manners

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0033] See also Figures 1-7 As shown, this embodiment is a welding device for high-head pressure steel pipes and volutes of pumped storage power stations, including a bottom plate 1, a mounting structure 2 is fixedly connected to the middle of the right side of the upper end surface of the bottom plate 1, a driving structure 3 is provided in the inner cavity of the mounting structure 2, a clamping structure 4 is symmetrically slidably connected to the inner cavity of the mounting structure 2 along the center line, the upper end surface of the clamping structure 4 is rotatably connected to the limiting structure 5, the upper end surface of the limiting structure 5 is hinged to the limiting structure 5, and a placement structure 6 is fixedly connected to the middle of the lower end surface of the inner cavity of the mounting structure 2;

[0034] A sliding structure 7 is fixedly connected to the left side of the upper end surface of the base plate 1, an adjustment structure 8 is fixedly connected to the middle of the lower end surface of the inner cavity of the sliding structure 7, a self-locking structure 9 is symmetrically arranged on the upper end surface of the sliding structure 7 along the center line, a control structure 10 is fixedly connected to the middle of the upper end surface of the sliding structure 7, a lifting structure 11 is fixedly connected to the upper end surface of the self-locking structure 9, an extrusion structure 12 is fixedly connected to the upper end surface of the lifting structure 11, and a fixed structure 13 is symmetrically slidably connected to the upper end surface of the extrusion structure 12 along the center line.

[0035] Furthermore, the mounting structure 2 includes a fixed block 21 fixedly connected to the right side of the upper end surface of the base plate 1, a placement block 22 is fixedly connected to the upper end surface of the fixed block 21, a mounting groove 23 is opened in the middle of the upper end surface of the placement block 22, a driving structure 3 is arranged on the upper end surface of the fixed block 21, and a clamping structure 4 is symmetrically slidably connected to the inner cavity of the mounting groove 23 along the center line. Through the mounting structure 2 on the upper end surface of the base plate 1, the driving structure 3 and the placement structure 6 are installed and placed through the fixed block 21 during use, and then the clamping structure 4 is placed through the mounting groove 23.

[0036] Furthermore, the driving structure 3 includes a driving motor 31 fixedly connected to the rear right side of the upper end surface of the fixed block 21, the inner cavity of the mounting groove 23 is connected with a rotating rod 32 that rotates symmetrically along the center line, and the front end surface of the placement block 22 is connected with a transmission structure 33 for rotation. The transmission structure 33 includes a pulley 331 that is connected to the front end surface of the placement block 22 symmetrically along the center line, and the outer surfaces of the two pulleys 331 are connected with belts 332 for transmission. The front end shafts of the two rotating rods 32 pass through the placement block 22 and are respectively fixedly connected to the two pulleys 331, and the rear end surface of the right rotating rod 32 passes through the placement block 22 and is fixedly connected to the output end of the driving motor 31. The outer surface of the rotating rod 32 is provided with two sections of threads in opposite directions. Through the driving structure 3 on the mounting structure 2, the spacing between the two clamping structures 4 is adjusted by the rotating rod 32 during use, and then the rotating rods 32 on both sides are rotated in the same direction and at the same time through the transmission structure 33.

[0037] Further, the clamping structure 4 includes sliders 41 symmetrically and slidably connected to the inner cavity of the installation groove 23 along the center line. The upper end surfaces of both sliders 41 are fixedly connected with telescopic sleeves 42. The lower end surface of the inner cavity of the telescopic sleeve 42 is uniformly fixedly connected with clamping springs 43. The upper end surface of the clamping spring 43 is fixedly connected with a telescopic inner plate 44. The telescopic inner plate 44 is slidably connected to the inner cavity of the telescopic sleeve 42. The upper end surface of the telescopic inner plate 44 is hinged with a limiting structure 5. Through the clamping structure 4 on the installation structure 2, the limiting structure 5 is installed and adjusted during use, and then the front and rear end surfaces of the volute are fitted and clamped through the telescopic sleeve 42, so as to facilitate the calibration of the volute and the steel pipe by the personnel.

[0038] Further, the limiting structure 5 includes a rotating shaft 51 fixedly connected to the upper end surface of the telescopic inner plate 44. A torsion spring is movably sleeved in the inner cavity of the rotating shaft 51. One end of the outer surface of the rotating shaft 51 far from the telescopic inner plate 44 is fixedly connected with a limiting plate 52. The two ends of the torsion spring in the inner cavity of the rotating shaft 51 are respectively fixedly connected with the telescopic inner plate 44 and the limiting plate 52. The telescopic inner plate 44 is hinged with the limiting plate 52 through the rotating shaft 51. The middle part of the lower end surface of the limiting plate 52 is fixedly connected with a cushion block 53. The placing structure 6 includes a placing rack 61 fixedly connected to the middle part of the lower end surface of the inner cavity of the installation groove 23. The upper end surface of the placing rack 61 is uniformly provided with placing grooves. The lower end surfaces of the inner cavities of the placing grooves are all fixedly connected with springs. The upper end surfaces of the springs are fixedly connected with telescopic columns 62. The telescopic columns 62 are slidably connected to the inner cavities of the placing grooves. Through the limiting structure 5 on the upper end surface of the clamping structure 4, a downward pressure is provided for the volute during use, so as to prevent the volute from sliding in the vertical direction when the volute is fixed. Through the placing structure 6 on the installation structure 2, it is convenient for the personnel to install and place the volute during use. Then, through the expansion and contraction of the springs and the telescopic columns 62 in the inner cavity of the placing rack 61, the placing structure 6 is matched with the lower part of the outer surface of the volute, which facilitates the installation and placement of the volute by the personnel during use and achieves the fixation and limitation of the volute during use.

[0039] Further, the sliding structure 7 includes a slide rail 71 symmetrically and fixedly connected to the left side of the upper end surface of the bottom plate 1 along the center line. The upper end surface of the slide rail 71 is slidably connected with a placement plate 72 through a connecting block. The upper end surface of the placement plate 72 is provided with a self-locking structure 9 and a control structure 10. In the middle of the lower end surface between the two slide rails 71, an adjusting structure 8 is provided. The adjusting structure 8 includes a rotating frame 81 fixedly connected to the upper end surface of the bottom plate 1 between the two slide rails 71. In the middle of the inner cavity of the rotating frame 81, an adjusting threaded rod 82 is fixedly connected. On the upper end surface of the bottom plate 1, on the right side of the rotating frame 81, an adjusting motor 83 is fixedly connected. The right end surface rotating shaft of the adjusting threaded rod 82 passes through the rotating frame 81 and is fixedly connected to the output end of the adjusting motor 83. In the middle of the lower end surface of the placement plate 72, an adjusting block 73 is fixedly connected. The adjusting threaded rod 82 passes through the adjusting block 73 and is threadedly connected. Through the sliding structure 7 on the upper end surface of the bottom plate 1, during use, the self-locking structure 9 and the control structure 10 are installed and placed, and then the placement plate 72 is slid horizontally through the slide rail 71. Through the adjusting structure 8 on the upper end surface of the bottom plate 1, during use, the placement plate 72 is adjusted through the adjusting threaded rod 82, and then the relative position of the placement plate 72 is adjusted and fixed by the forward and reverse rotation of the adjusting motor 83.

[0040] Further, the self-locking structure 9 includes worm wheels 91 symmetrically and rotatably connected to the four corners of the upper end surface of the placement plate 72. On the left and right sides between the two worm wheels 91 on the upper end surface of the placement plate 72, worm shafts 92 are rotatably connected through brackets. The worm shafts 92 and the worm wheels 91 are meshed with each other. Between the adjacent two worm shafts 92, a transmission gear 93 is rotatably connected through a connecting bracket of the worm shaft 92. The front and rear side rotating shafts between the adjacent two worm shafts 92 all pass through and are fixedly connected to the transmission gear 93. Between the two transmission gears 93 on the upper end surface of the placement plate 72, a control structure 10 is provided. On the upper end surface of the worm wheel 91, a lifting structure 11 is fixedly connected. Through the self-locking structure 9 on the upper end surface of the sliding structure 7, during use, the lifting structure 11 is installed and placed, and then the lifting structure 11 is self-locked and fixed after adjustment through the worm wheel 91 and the worm shaft 92, avoiding the movement of the lifting structure 11.

[0041] Further, the control structure 10 includes a toothed belt 101 drivingly connected to the outer surfaces of two transmission gears 93. In the middle of the inner cavity of the toothed belt 101, a driving gear 102 is drivingly connected. In the middle of the upper end surface of the placement plate 72, a control motor 103 is fixedly connected. The output end of the control motor 103 is fixedly connected to the driving gear 102. The lifting structure 11 includes a threaded rod 111 fixedly connected to the upper end surface of the worm gear 91. Threaded sleeves 112 are threadedly connected to the outer surface of the threaded rod 111. The upper end of the threaded sleeve 112 is fixedly connected to a lifting plate 113. An extrusion structure 12 is fixedly connected to the upper end surface of the lifting plate 113. Through the control structure 10 on the upper end surface of the sliding structure 7, during use, the self-locking structure 9 is driven and adjusted. Furthermore, the forward and reverse rotation of the worm gear 91 is adjusted by the forward and reverse rotation of the output end of the control motor 103. Through the lifting structure 11 on the upper end surface of the self-locking structure 9, during use, the extrusion structure 12 is installed and placed. Furthermore, the horizontal height of the fixing structure 13 is adjusted by the threaded rod 111 and the threaded sleeve 112.

[0042] Further, the extrusion structure 12 includes sliding rods 121 symmetrically fixed to the upper end surface of the lifting plate 113 along the center line. Limit frames 122 are fixedly connected to the front and rear end faces of the sliding rods 121. Hydraulic telescopic rods 123 are evenly fixedly connected to the front and rear end faces of the inner cavity of the limit frames 122. A fixing structure 13 is slidably connected to the upper end surface of the sliding rod 121. The end of the hydraulic telescopic rod 123 away from the limit frame 122 is fixedly connected to the fixing structure 13. Through the extrusion structure 12 on the upper end surface of the lifting structure 11, during use, the fixing structure 13 is installed and placed. Furthermore, the gap between the fixing structures 13 is adjusted by the hydraulic telescopic rods 123.

[0043] Further, the fixing structure 13 includes fixing blocks two 131 slidably connected to the upper end surface of the sliding rod 121 along the center line. On one side of the upper end surface of the fixing block two 131, a mounting plate 132 is fixedly connected. A support frame 133 is fixedly connected between the mutually remote ends of the mounting plates 132 and the fixing block two 131. Fixing frames 134 are fixedly connected to the front and rear end faces between the two mounting plates 132. Through the fixing structure 13 on the upper end surface of the extrusion structure 12, during use, the high-head penstock is fixed by the fixing frame 134. Furthermore, the mounting plates 132 are evenly stressed through the support frame 133.

[0044] Working principle: When working, a high-head pressure steel pipe (steel pipe for short) is placed between two fixed frames 134. At this time, the extrusion structure 12 is started to make the hydraulic telescopic rod 123 extend and retract, so that the fixed block 131 slides relatively, so that the mounting plates 132 on both sides are close to each other, so that the steel pipe is clamped and fixed by the fixed frame 134, and the volute is placed on the upper end surface of the placement structure 6. At this time, the volute is pressed down, so that the telescopic column 62 in contact with the inner cavity of the placement frame 61 and the volute slides downward, so that the upper end surface of the placement structure 6 and the lower surface of the volute match each other, and then the extrusion structure 12 is started. The driving structure 3 causes the output end of the driving motor 31 to rotate, so the right rotating rod 32 rotates, and then the right pulley 331 rotates, and further the belt 332 rotates, so the left pulley 331 rotates, and thus the left rotating rod 32 rotates, so that the two sliders 41 slide relative to each other, so that the telescopic sleeves 42 on both sides are close to each other, and then the telescopic sleeves 42 fit the front and rear surfaces of the volute, and at the same time the clamping spring 43 is extended and retracted, so that the telescopic inner rod 44 is extended and retracted, so that the limiting structure 5 and the upper surface of the volute are close to each other, and at this time, the inner cavity of the rotating shaft 51 is used to move the telescopic inner rod 4 ... The torsion spring of the worm gear 10 rotates the limit plate 52, so the cushion block 53 fits with the upper surface of the volute, thereby fixing the volute. At this time, the control structure 10 is started to control the output end of the motor 103 to rotate, so the driving gear 102 rotates, and the toothed belt 101 meshing with the driving gear 102 rotates. At this time, since the toothed belt 101 is connected to the transmission gear 93, the transmission gear 93 rotates, thereby rotating the worm 92. At this time, since the worm 92 and the worm wheel 91 mesh with each other, the worm wheel 91 rotates, thereby rotating the threaded rod 111. Since the threaded sleeve 112 is fixedly connected to the lifting plate 113 and four of them are provided, the threaded sleeve 112 is lifted and lowered, and then the lifting plate 113 is lifted and lowered, so that the horizontal height of the steel pipe is adjusted, so that the interface between the steel pipe and the volute is calibrated and aligned with each other. At this time, the adjusting motor 83 is started to rotate the adjusting threaded rod 82. Since the adjusting block 73 on the lower end surface of the placing plate 72 is threadedly connected to the adjusting threaded rod 82, the placing plate 72 slides left and right along the slide rail 71, so that the interface between the steel pipe and the volute is in contact with each other, which makes it convenient for personnel to weld the volute and the steel pipe.

[0045] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0046] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "arranged", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A welding device for high-head pressure steel pipes and volutes of a pumped storage power station, comprising a bottom plate (1), characterized in that: The bottom plate (1) is fixedly connected to a mounting structure (2) in the middle of the right side of the upper end surface, the mounting structure (2) is provided with a driving structure (3) in the inner cavity, the mounting structure (2) is symmetrically slidably connected to a clamping structure (4) in the inner cavity along the center line, the upper end surface of the clamping structure (4) is rotatably connected to a limiting structure (5), and the mounting structure (2) is fixedly connected to a placement structure (6) in the middle of the inner cavity of the lower end surface; The left side of the upper end surface of the bottom plate (1) is fixedly connected to a sliding structure (7); the middle of the lower end surface of the inner cavity of the sliding structure (7) is fixedly connected to an adjustment structure (8); the upper end surface of the sliding structure (7) is symmetrically provided with a self-locking structure (9) along the center line; the middle of the upper end surface of the sliding structure (7) is fixedly connected to a control structure (10); the upper end surface of the self-locking structure (9) is fixedly connected to a lifting structure (11); the upper end surface of the lifting structure (11) is fixedly connected to an extrusion structure (12); the upper end surface of the extrusion structure (12) is symmetrically slidably connected to a fixed structure (13) along the center line; The mounting structure (2) comprises a fixing block (21) fixedly connected to the right side of the upper end surface of the bottom plate (1); a placement block (22) is fixedly connected to the upper end surface of the fixing block (21); a mounting groove (23) is provided in the middle of the upper end surface of the placement block (22); a driving structure (3) is provided on the upper end surface of the fixing block (21); and a clamping structure (4) is symmetrically slidably connected to the inner cavity of the mounting groove (23) along the center line; The driving structure (3) comprises a driving motor (31) fixedly connected to the rear right side of the upper end surface of the fixing block (21); the inner cavity of the mounting groove (23) is connected to a rotating rod (32) symmetrically rotatable along the center line; the front end surface of the placement block (22) is rotatably connected to a transmission structure (33); the transmission structure (33) comprises a pulley (331) symmetrically rotatable along the center line connected to the front end surface of the placement block (22); the outer surfaces of the two pulleys (331) are connected to a belt (332); the front end surfaces of the two rotating rods (32) have rotating shafts that penetrate the placement block (22) and are respectively fixedly connected to the two pulleys (331); the rear end surface of the right rotating rod (32) penetrates the placement block (22) and is fixedly connected to the output end of the driving motor (31); and the outer surface of the rotating rod (32) is provided with two sections of threads in opposite directions; The clamping structure (4) comprises a slider (41) symmetrically slidably connected to the inner cavity of the installation groove (23) along the center line, the upper end surfaces of the two sliders (41) are fixedly connected to the telescopic sleeve (42), the lower end surface of the inner cavity of the telescopic sleeve (42) is evenly fixedly connected to the clamping spring (43), the upper end surface of the clamping spring (43) is fixedly connected to the telescopic inner plate (44), the telescopic inner plate (44) is slidably connected to the inner cavity of the telescopic sleeve (42), and the upper end surface of the telescopic inner plate (44) is hinged to the limiting structure (5); The limiting structure (5) comprises a rotating shaft (51) rotatably connected to the upper end surface of the telescopic inner plate (44), the inner cavity of the rotating shaft (51) is movably sleeved with a torsion spring, the outer surface of the rotating shaft (51) is hingedly connected to a limiting plate (52) at one end away from the telescopic inner plate (44), the output ends of the torsion spring in the inner cavity of the rotating shaft (51) are fixedly connected to the telescopic inner plate (44) and the limiting plate (52) on both sides, the telescopic inner plate (44) is hingedly connected to the limiting plate (52) through the rotating shaft (51), and the middle part of the lower end surface of the limiting plate (52) is fixedly connected with a cushion block (53), and the placement structure (6) comprises a placement frame (61) fixedly connected to the middle part of the lower end surface of the inner cavity of the installation groove (23), the upper end surface of the placement frame (61) is evenly provided with placement grooves, the lower end surfaces of the inner cavities of the placement grooves are fixedly connected with springs, the upper end surfaces of the springs are fixedly connected with telescopic columns (62), and the telescopic columns (62) are slidably connected to the inner cavity of the placement grooves; The sliding structure (7) comprises a slide rail (71) symmetrically fixedly connected to the left side of the upper end surface of the base plate (1) along the center line, the upper end surface of the slide rail (71) is slidably connected to a placement plate (72) through a connecting block, the upper end surface of the placement plate (72) is provided with a self-locking structure (9), a control structure (10), an adjustment structure (8) is provided in the middle of the lower end surface between the two slide rails (71), the adjustment structure (8) comprises a rotating frame (81) fixedly connected to the upper end surface of the base plate (1) and located between the two slide rails (71), an adjustment threaded rod (82) is rotatably connected to the middle of the inner cavity of the rotating frame (81), the upper end surface of the base plate (1) is located on the right side of the rotating frame (81) and is fixedly connected to an adjustment motor (83), the right end surface of the adjustment threaded rod (82) has a rotating shaft that penetrates the rotating frame (81) and is fixedly connected to the output end of the adjustment motor (83), the middle of the lower end surface of the placement plate (72) is fixedly connected to an adjustment block (73), and the adjustment threaded rod (82) penetrates the adjustment block (73) and is threadedly connected; The self-locking structure (9) comprises a worm wheel (91) symmetrically rotatably connected to the four corners of the upper end surface of the placement plate (72); a worm (92) is rotatably connected to the left and right sides of the upper end surface of the placement plate (72) through a bracket; the worm (92) and the worm wheel (91) are meshed with each other; a transmission gear (93) is rotatably connected between two adjacent worm wheels (92) through a connecting bracket of the worm wheels (92); the front and rear rotating shafts between the two adjacent worm wheels (92) are both passed through and fixedly connected to the transmission gear (93); a control structure (10) is provided on the upper end surface of the placement plate (72) between the two transmission gears (93); and a lifting structure (11) is fixedly connected to the upper end surface of the worm wheel (91); The control structure (10) comprises a toothed belt (101) which is transmission-connected to the outer surfaces of the two transmission gears (93); the middle of the inner cavity of the toothed belt (101) is transmission-connected to the driving gear (102); the middle of the upper end surface of the placement plate (72) is fixedly connected to a control motor (103); the output end of the control motor (103) is fixedly connected to the driving gear (102); the lifting structure (11) comprises a threaded rod (111) which is fixedly connected to the upper end surface of the worm gear (91); the outer surface of the threaded rod (111) is threadedly connected to a threaded sleeve (112); the upper end of the threaded sleeve (112) is fixedly connected to a lifting plate (113); and the upper end surface of the lifting plate (113) is fixedly connected to an extrusion structure (12).

2. A welding device for high-head pressure steel pipes and volutes of a pumped storage power station according to claim 1, characterized in that: The extrusion structure (12) comprises a slide bar (121) symmetrically fixed to the upper end surface of the lifting plate (113) along the center line; the front and rear end surfaces of the slide bar (121) are fixedly connected to the limiting frame (122); the front and rear end surfaces of the inner cavity of the limiting frame (122) are evenly fixedly connected to the hydraulic telescopic rod (123); the upper end surface of the slide bar (121) is slidably connected to the fixed structure (13); and one end of the hydraulic telescopic rod (123) away from the limiting frame (122) is fixedly connected to the fixed structure (13); The fixed structure (13) comprises a second fixed block (131) symmetrically slidably connected to the upper end surface of the slide rod (121) along the center line, a mounting plate (132) is fixedly connected to one side of the upper end surface of the second fixed block (131), a support frame (133) is fixedly connected between one end of the mounting plate (132) away from each other and the second fixed block (131), and a fixing frame (134) is fixedly connected to both the front and rear end surfaces between the two mounting plates (132).

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