A hydraulic engineering penstock stiffening ring welding machine

Abstract

The present invention relates to the technical field of welding stiffening rings for penstocks, specifically a hydraulic engineering penstock stiffening ring welding machine, comprising two fixed base plates arranged in parallel, and a sliding base plate slidably mounted between the two fixed base plates; a first adjustment seat is connected to the upper right side of the sliding base plate through a hydraulic cylinder, and two groups of clamping assemblies for clamping the inner walls of both ends of the penstock are evenly spacedly mounted on the outer side of a support column; a first clamping mechanism for clamping the outer side of one end of the penstock is fixed to the outer side of the right end of the support column, and the support column is arranged just above the sliding base plate; a support roller assembly for lifting and limiting the lower side of the penstock is symmetrically mounted above the sliding base plate. The hydraulic engineering penstock stiffening ring welding machine can horizontally move the penstock to adjust the welding position by only pushing the sliding base plate, without separating the penstock from the support roller assembly, and is convenient to operate, saving time and effort.

Description

Technical Field

[0001] The invention relates to the technical field of penstock stiffening ring welding, in particular to a hydraulic engineering penstock stiffening ring welding machine. Background Art

[0002] When constructing the water conservancy project of Liangchahe Reservoir, penstocks are needed to transport high-pressure water. In order to enhance the strength and stability of the penstocks, a welding machine is needed to weld the stiffening rings to the outside of the penstocks, thereby increasing the service life of the penstocks.

[0003] The patent name disclosed in the prior art with the announcement number "CN111360481A" is "A Large Pressure Steel Pipe Stiffening Ring Welding Device", which discloses a welding operating mechanism. When the welding arm of the welding operating mechanism is adjusted to the position of the pressure steel pipe within the adjustable range, the fillet weld can be welded. This device can flip the steel pipe from 0° to 90°. The function of the roller frame is to provide rolling force for the welded pressure steel pipe when the equipment is working, and use friction to drive the steel pipe to make a circular motion through the rotation of the roller. The welding operation machine The height and length of the welding arm can be adjusted to suit various sizes of pressure steel pipes. The welding method of the welding manipulator is submerged arc welding. When the welding arm is adjusted to the position of the pressure steel pipe within the adjustable range, the weld can be welded. During welding, the steel pipe is in a 45° state and performs a rotary motion. After welding one side, the steel pipe is turned to a 90° state, and then the lifting equipment is used to rotate the steel pipe 180° and place it on the turning frame, and then turned to a 45° state to weld the weld on the other side. This process is simpler, safer and easier to operate than the original technology.

[0004] The patent name disclosed in the prior art with the announcement number "CN114654157A" is "A low-cost pressure steel pipe stiffening ring welding device", which discloses that a lifting mechanism is provided on the welding area, and the pressure steel pipe can be sent into the welding area from the outside. The lifting mechanism includes a fixed rod, a supporting beam, a pin shaft and a rotating roller. The fixed rod is fixed on the side wall of the lifting seat, and one end of the supporting beam is rotatably connected to the fixed rod through a horizontal pin shaft. The supporting beam swings on a vertical plane. A plurality of horizontal rotating rollers are provided on the supporting beam, and the plurality of rotating rollers are all in the same horizontal plane. The pressure steel pipe is sleeved on the outer side of the supporting beam from the outside, and by tilting the free end of the supporting beam upward, the rotating roller contacts the top of the inner wall of the pressure steel pipe, and the pressure steel pipe is sent to the inside of the welding area under the conveying action of the rotating roller.

[0005] When the pressure steel pipe stiffening ring welding machine in the above-mentioned prior art is performing welding work, when it is necessary to move the pressure steel pipe horizontally to weld stiffening rings at other positions, it is also necessary to use a lifting mechanism to move the pressure steel pipe upward first so that the bottom of the pressure steel pipe is separated from the driving roller before the pressure steel pipe can be moved horizontally, which makes the operation more cumbersome. Therefore, it is not convenient to move the pressure steel pipe to adjust the welding position during the welding process.

[0006] Therefore, we proposed a hydraulic engineering pressure steel pipe stiffening ring welding machine to solve the above-mentioned problems. Summary of the invention

[0007] The purpose of the present invention is to provide a hydraulic engineering penstock stiffening ring welding machine to solve the problem raised in the above background technology that the welding machines currently on the market are not convenient for moving the penstock to adjust the welding position during the welding process.

[0008] To achieve the above object, the present invention provides the following technical solution: a hydraulic engineering penstock stiffening ring welding machine, comprising two fixed bottom plates arranged in parallel, and a sliding bottom plate slidably mounted between the two fixed bottom plates;

[0009] The bottom surface of the sliding bottom plate is provided with moving wheels;

[0010] The upper right side of the sliding bottom plate is connected to a first adjustment seat through a hydraulic cylinder, a support column is installed through the interior of the first adjustment seat, and two groups of clamping components for clamping the inner walls of both ends of the pressure steel pipe are installed at equal intervals on the outside of the support column;

[0011] A first clamping mechanism for clamping the outer side of one end of the pressure steel pipe is fixed to the outer side of the right end of the support column, and the support column is arranged just above the sliding bottom plate;

[0012] A supporting roller assembly for lifting and limiting the position of the pressure steel pipe below is symmetrically installed above the sliding bottom plate;

[0013] The inner side of the second adjustment seat on the sliding bottom plate is connected with a fixing plate, and the welding gun assembly is installed at the middle position of the inner side of the fixing plate.

[0014] Preferably, the clamping assembly comprises a first fixing tube installed with internal grooves at the left and right ends of the support column, the outer end of the first fixing tube passes through the outer side of the support column, the interior of the first fixing tube is connected to the first piston column through a return spring, and the outer end of the first piston column is connected to the second clamping mechanism with an arc-shaped structure;

[0015] The first clamping mechanism is arranged in a funnel shape.

[0016] Preferably, an air guide tube is installed horizontally through the left center of the support column, and two groups of diversion tubes are installed at equal intervals on the outside of the air guide tube. The outer ends of the diversion tubes are inserted into the first fixed tube for controlling the injection and extraction of gas in the first fixed tube.

[0017] Preferably, manual telescopic rods are installed below and inside the second adjustment seat, and the second adjustment seat is connected to the upper surface of the fixed base plate through the manual telescopic rod below, and the second adjustment seat is connected to the fixed plate through the manual telescopic rod inside and the connecting spring.

[0018] Preferably, both the front and rear sides of the first adjustment seat are equipped with connecting adjustment rods with an "L"-shaped structure, one end of the connecting adjustment rod passes through the middle interior of the second adjustment seat, and the second adjustment seat rises and falls synchronously with the first adjustment seat.

[0019] Preferably, the transverse center line of the welding gun assembly and the transverse center line of the support column are on the same horizontal plane.

[0020] Preferably, a rotating rod is installed in a symmetrical groove inside a side of the fixed plate away from the second adjustment seat, a connecting frame is installed on the outside of the rotating rod, a vortex spring is nested and connected to the outside of one end of the rotating rod, and an extrusion limiting roller is rotatably connected to one end of the connecting frame.

[0021] Preferably, a bidirectional screw is rotatably installed above the two fixed base plates, and self-push rods are threadedly connected to the outer sides of the two ends of the bidirectional screw. The lower end of the self-push rod is inserted into a groove opened on the upper surface of the fixed base plate, and the upper end of the self-push rod is fitted with the outer side surface of the fixed plate. The two fixed plates form a synchronous opposite movement structure through the self-push rod.

[0022] Preferably, a second fixed tube is installed in the middle position of the upper right side of the sliding base plate, a second piston column is fittedly connected to the inside of the second fixed tube, the upper end of the second piston column is connected to the first adjustment seat, and a connecting tube with an "L" shaped structure is installed on the left side of the second fixed tube.

[0023] Preferably, an air storage frame is fixed on the left side of the first adjustment seat, a support column is connected to the air storage frame through a sealed bearing, an air storage cavity is provided inside the support column arranged in the air storage frame, a circle of flow holes is provided on the outside of the support column arranged in the air storage frame, the outside of the air storage cavity is connected to the flow holes, the outside of the flow holes is connected to the air storage frame, and the right end of the air guide pipe in the support column is inserted into the air storage cavity;

[0024] The upper end of the connecting pipe passes through the bottom surface of the gas storage frame.

[0025] Compared with the prior art, the beneficial effects of the present invention are: the hydraulic engineering penstock stiffening ring welding machine can horizontally move the penstock to adjust the welding position by only pushing the sliding bottom plate, without separating the penstock from the supporting roller assembly, and is convenient to operate, saving time and effort. The specific contents are as follows:

[0026] (1) Through the coordinated arrangement of the sliding base plate, the first adjustment seat and the support column, the pressure steel pipe can be horizontally moved to adjust the welding position by simply pushing the sliding base plate, without separating the pressure steel pipe from the support roller assembly, which is convenient to operate and saves time and effort;

[0027] The first clamping mechanism with a funnel-shaped structure can clamp the outer side of one end of the penstock, and the inner side walls of both ends of the penstock can be clamped by two sets of second clamping mechanisms with an arc-shaped structure, so that the penstock can be driven to rotate by rotating the support column in the later stage, so that the stiffening ring on the outer side of the penstock can be welded while rotating, thereby improving the welding efficiency;

[0028] By using two sets of welding gun assemblies in coordination, continuous and symmetrical welding can be performed on the circumference of the stiffening ring, thereby avoiding large deformation of the pressure steel pipe.

[0029] (2) The air guide tube is connected to an external air injection mechanism, and air can be injected into the first fixed tube through the air guide tube and the shunt tube, so that the first piston column in the first fixed tube drives the second clamping mechanism to move outward, so that the second clamping mechanism can automatically clamp the inner wall of the pressure steel pipe;

[0030] (3) Through the arrangement of the second fixed tube, when the first adjustment seat drives the support column to descend, the second piston column automatically pushes the gas in the second fixed tube into the gas guide pipe and the diverter pipe, thereby enabling the second clamping mechanism to automatically clamp and release the inner wall of the pressure steel pipe;

[0031] Furthermore, by providing the air storage frame, the air storage cavity and the flow holes, it is convenient to inject and extract air into the air guide tube without affecting the subsequent rotation operation of the support column. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0033] Figure 2 It is a bottom view structural schematic diagram of the present invention;

[0034] Figure 3 This is a schematic diagram of the overall structure of the present invention after placing the pressure steel pipe and the stiffening ring;

[0035] Figure 4This is a schematic diagram of the separation structure of the fixed bottom plate and the sliding bottom plate of the present invention;

[0036] Figure 5 This is a schematic diagram of the cross-sectional structure of the support column of the present invention;

[0037] Figure 6 This is a schematic cross-sectional view of the connection between the support column and the first fixing pipe of the present invention;

[0038] Figure 7 It is a schematic diagram of the connection structure between the second adjustment seat and the fixing plate of the present invention;

[0039] Figure 8 It is a schematic diagram of a partial cross-sectional structure of the connection between the fixed plate and the extrusion limiting roller of the present invention;

[0040] Fig. 9 This is a schematic diagram of the three-dimensional structure of the support column in the second embodiment of the present invention;

[0041] Fig.10 It is a schematic cross-sectional view of the connection structure between the support column and the first adjustment seat in the second embodiment of the present invention;

[0042] Fig.11 It is a schematic diagram of the cross-sectional structure of the connection between the support column and the gas storage frame of the present invention.

[0043] In the figure: 1. fixed base plate; 2. sliding base plate; 3. first adjustment seat; 4. second adjustment seat; 41. manual telescopic rod; 42. connecting spring; 5. connecting adjustment rod; 6. support column; 61. air storage chamber; 62. flow hole; 7. support roller assembly; 8. fixed plate; 81. extrusion limit roller; 82. connecting frame; 83. rotating rod; 84. vortex spring; 9. welding gun assembly; 10. first clamping mechanism; 11. self-propelled rod; 111. bidirectional screw rod; 12. hydraulic cylinder; 13. second clamping mechanism; 131. first piston column; 132. first fixed pipe; 133. reset spring; 14. air guide pipe; 141. shunt pipe; 15. air storage frame; 16. second fixed pipe; 161. second piston column; 162. connecting pipe. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] See also Figure 1-Figure 11 , the present invention provides the following technical solutions:

[0046] Embodiment 1: The hydraulic engineering penstock stiffening ring welding machine in this embodiment is convenient for moving the penstock during the welding process to adjust the welding position, which is convenient to operate, saves time and effort, and the specific structure is shown in the attached Figure 1-Figure 8 As shown, there are two fixed base plates 1 arranged in parallel, and a sliding base plate 2 slidably installed between the two fixed base plates 1, a moving wheel is installed on the bottom surface of the sliding base plate 2, and a first adjusting seat 3 is connected to the upper right side of the sliding base plate 2 through a hydraulic cylinder 12, a support column 6 is installed through the inside of the first adjusting seat 3, and two groups of clamping assemblies for clamping the inner walls of the two ends of the pressure steel pipe are installed at equal intervals on the outside of the support column 6, and a first clamping mechanism 10 for clamping the outer side of one end of the pressure steel pipe is fixed to the outer side of the right end of the support column 6, the support column 6 is arranged directly above the sliding base plate 2, and a support roller assembly 7 for lifting and limiting the lower side of the pressure steel pipe is symmetrically installed above the sliding base plate 2, the inner side of the second adjusting seat 4 on the sliding base plate 2 is connected to a fixed plate 8, and a welding gun assembly 9 is installed at the middle position of the inner side of the fixed plate 8.

[0047] The clamping assembly includes a first fixed tube 132 installed with grooves inside the left and right ends of the support column 6, the outer end of the first fixed tube 132 passes through the outer side of the support column 6, the interior of the first fixed tube 132 is connected to the first piston column 131 through a reset spring 133, the outer end of the first piston column 131 is connected to the second clamping mechanism 13 with an arc-shaped structure, the first clamping mechanism 10 is arranged in a funnel shape, an air guide tube 14 is installed horizontally through the left center of the support column 6, two groups of diverter tubes 141 are installed at equal intervals on the outside of the air guide tube 14, the outer end of the diverter tube 141 is inserted into the first fixed tube 132, and is used to control the gas injection and extraction in the first fixed tube 132, a manual telescopic rod 41 is installed below and inside the second adjustment seat 4, the second adjustment seat 4 is connected to the upper surface of the fixed base plate 1 through the manual telescopic rod 41 below, and the second adjustment seat 4 is connected to the fixed plate 8 through the manual telescopic rod 41 on the inside and the connecting spring 42.

[0048] The front and rear sides of the first adjustment seat 3 are both installed with a connecting and adjusting rod 5 in an "L" shaped structure, one end of the connecting and adjusting rod 5 passes through the middle interior of the second adjustment seat 4, the second adjustment seat 4 and the first adjustment seat 3 are lifted and lowered synchronously, the transverse center line of the welding gun assembly 9 and the transverse center line of the support column 6 are on the same horizontal plane, and a rotating rod 83 is symmetrically grooved inside the side of the fixed plate 8 away from the second adjustment seat 4, and a connecting frame 82 is installed on the outer side of the rotating rod 83, and a vortex spring 84 is nested and connected to the outer side of one end of the rotating rod 83, and an extrusion limiting roller 81 is rotatably connected to one end of the connecting frame 82, and a bidirectional screw rod 111 is rotatably installed above the two fixed base plates 1, and the outer sides of both ends of the bidirectional screw rod 111 are threadedly connected with a self-thrust rod 11, the lower end of the self-thrust rod 11 is inserted into the groove opened on the upper surface of the fixed base plate 1, and the upper end of the self-thrust rod 11 is fitted with the outer side of the fixed plate 8, and the two fixed plates 8 form a synchronous relative movement structure through the self-thrust rod 11.

[0049] First, the entire hydraulic engineering pressure steel pipe stiffening ring welding machine is moved into the working area. After arriving at the working area, the pressure steel pipe is sleeved on the outside of the support column 6, and the pressure steel pipe is pushed so that one end of the pressure steel pipe is inserted into the first clamping mechanism 10. The first clamping mechanism 10 with a funnel-shaped structure can clamp the outside of one end of the pressure steel pipe, and then a plurality of stiffening rings are sleeved at various positions on the outside of the pressure steel pipe. Then, the outer end of the air guide pipe 14 is connected to the external steam injection mechanism, so that the gas is injected into the corresponding first fixed pipe 132 through the air guide pipe 14 and the diverter pipe 141, and then the first piston column 131 in the first fixed pipe 132 drives the corresponding second clamping mechanism 13 to move outward, so that the two groups of second clamping mechanisms 13 clamp the inner walls of the two ends of the pressure steel pipe, and then the first adjustment seat 3 and the support column 6 are driven by the hydraulic cylinder 12 to move downward together. At this time, the lower surface of the pressure steel pipe on the outside of the support column 6 contacts the support roller assembly 7 above the sliding bottom plate 2, and the first adjustment seat 3 is stopped from descending.

[0050] When the first adjusting seat 3 descends, it will drive the connecting adjusting rod 5 and the second adjusting seat 4 to descend together. The second adjusting seat 4 applies a downward pressure to the manual telescopic rod 41 below, and then connects the outer end of the bidirectional screw rod 111 to the external motor. The motor drives the bidirectional screw rod 111 to rotate. When the bidirectional screw rod 111 rotates, it drives the two self-push rods 11 connected with the outer thread to move inward at the same time. At this time, the self-push rod 11 pushes the fixed plate 8 to move inward. At this time, the manual telescopic rod 41 on the side of the second adjusting seat 4 is stretched, and the connecting spring 42 is pulled to store force. When the welding gun assembly 9 installed on the fixed plate 8 gradually approaches the stiffening ring at the corresponding position on the outside of the pressure steel pipe, the self-push rod 11 is stopped. Move, at this time, the extrusion limiting roller 81 is rotated through the connecting frame 82 and the rotating rod 83, and the extrusion limiting roller 81 is tightly fitted to the outer side surface of the stiffening ring at the corresponding position on the outside of the pressure steel pipe, so that a pressure can be applied to the outer side of the stiffening ring at the corresponding position on the outside of the pressure steel pipe, and then the welding gun assembly 9 can perform welding work. During the welding process, the right end of the support column 6 can be connected to an external motor, the motor drives the support column 6 to rotate, and then the support column 6 drives the outer pressure steel pipe to rotate, so that the two groups of welding gun assemblies 9 can perform symmetrical welding on the rotating pressure steel pipe and the stiffening ring, which can not only improve the welding efficiency, but also avoid large deformation of the pressure steel pipe.

[0051] When it is necessary to weld the stiffening rings at other positions, the sliding base plate 2 can be pushed by the hydraulic assembly or manually. At this time, the sliding base plate 2 and the first adjustment seat 3 drive the pressure steel pipe and the stiffening ring to slide to the right together, so as to adjust the welding position of the pressure steel pipe and the stiffening ring to meet the welding requirements of different positions. The operation is convenient, and then the welding work can be continued as shown above. At a later stage, the exhaust mechanism can be used to extract the gas in the air guide pipe 14 and the first fixed pipe 132, so that the second clamping mechanism 13 releases the clamping operation on the pressure steel pipe.

[0052] Embodiment 2: The hydraulic engineering penstock stiffening ring welding machine in this embodiment does not need to use an external gas injection mechanism and a gas extraction mechanism, and can automatically clamp and release the inner wall of the penstock, making the operation more convenient and further improving the welding efficiency. For the specific structure, refer to the attached Figure 9-11As shown, a second fixed tube 16 is installed at the middle position of the upper right side of the sliding base plate 2, and a second piston column 161 is fitted and connected inside the second fixed tube 16, and the upper end of the second piston column 161 is connected to the first adjusting seat 3, and a connecting tube 162 with an "L" shape structure is installed on the left side of the second fixed tube 16, and an air storage frame 15 is fixed to the left side of the first adjusting seat 3, and a support column 6 is connected through a sealed bearing in the air storage frame 15, and an air storage cavity 61 is provided inside the support column 6 arranged in the air storage frame 15, and a circle of flow holes 62 is provided on the outer side of the support column 6 arranged in the air storage frame 15, and the outer side of the air storage cavity 61 is connected to the flow hole 62, and the outer side of the flow hole 62 is connected to the air storage frame 15, and the right end of the air guide pipe 14 in the support column 6 is inserted into the air storage cavity 61, and the upper end of the connecting tube 162 passes through the bottom surface of the air storage frame 15.

[0053] On the basis of Example 1, when the first adjustment seat 3 drives the support column 6 to move downward, the first adjustment seat 3 drives the second piston column 161 to move downward together. At this time, the second piston column 161 transports the gas in the second fixed tube 16 to the gas storage frame 15 through the connecting tube 162, and then the gas in the gas storage frame 15 enters the gas storage chamber 61 through the flow hole 62, and the gas in the gas storage chamber 61 enters the gas guide pipe 14 and the diverter pipe 141, and the diverter pipe 141 is transported to the first fixed tube 132, thereby making the first piston column 131 in the first fixed tube 132 drive the second clamping mechanism 13 to move outward to automatically clamp the inner walls of the two ends of the pressure steel pipe. At the same time, through the setting of the gas storage frame 15, it is not only convenient to evacuate and inject gas, but also will not affect the rotation of the support column 6 in the later stage.

[0054] Later, when welding is completed, the hydraulic cylinder 12 drives the first adjusting seat 3 to rise. At this time, the first adjusting seat 3 drives the second piston column 161 to rise. As shown above, the gas in the first fixed tube 132 is drawn into the second fixed tube 16. At this time, the first piston column 131 and the second clamping mechanism 13 are automatically driven to move in the opposite direction and reset through the stored force of the reset spring 133, so that the second clamping mechanism 13 automatically releases the clamping work of the pressure steel pipe. The operation is convenient, time-saving and labor-saving, and the welding efficiency in the later stage can be further improved.

[0055] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A hydraulic engineering penstock stiffening ring welding machine, comprising two fixed base plates (1) arranged in parallel, and a sliding base plate (2) slidably mounted between the two fixed base plates (1); The bottom surface of the sliding bottom plate (2) is provided with moving wheels; Features: The upper right side of the sliding base plate (2) is connected to a first adjustment seat (3) via a hydraulic cylinder (12); a support column (6) is installed through the interior of the first adjustment seat (3); and two groups of clamping assemblies for clamping the inner walls of both ends of the pressure steel pipe are installed at equal intervals on the outer side of the support column (6); A first clamping mechanism (10) for clamping the outer side of one end of the pressure steel pipe is fixed to the outer side of the right end of the support column (6), and the support column (6) is arranged directly above the sliding bottom plate (2); A supporting roller assembly (7) for lifting and limiting the position of the lower side of the pressure steel pipe is symmetrically mounted above the sliding bottom plate (2); The inner side of the second adjustment seat (4) on the sliding base plate (2) is connected to a fixing plate (8), and a welding gun assembly (9) is installed at the middle position of the inner side of the fixing plate (8); An air guide tube (14) is installed horizontally through the center of the left side of the support column (6), two groups of flow dividers (141) are installed at equal intervals outside the air guide tube (14), and the outer ends of the flow dividers (141) are inserted into the first fixed tube (132) for controlling the injection and extraction of gas in the first fixed tube (132); A second fixed tube (16) is installed at the middle position of the upper right side of the sliding base plate (2); a second piston column (161) is fittedly connected to the interior of the second fixed tube (16); the upper end of the second piston column (161) is connected to the first adjustment seat (3); and a connecting tube (162) in an "L"-shaped structure is installed on the left side of the second fixed tube (16); An air storage frame (15) is fixed on the left side of the first adjustment seat (3); a support column (6) is connected to the air storage frame (15) through a sealed bearing; an air storage cavity (61) is provided inside the support column (6) arranged in the air storage frame (15); a circle of flow holes (62) is provided outside the support column (6) arranged in the air storage frame (15); the outside of the air storage cavity (61) is connected to the flow holes (62); the outside of the flow holes (62) is connected to the air storage frame (15); the right end of the air guide pipe (14) in the support column (6) is inserted into the air storage cavity (61); and the upper end of the connecting pipe (162) passes through the bottom surface of the air storage frame (15).

2. A hydraulic engineering penstock stiffening ring welding machine according to claim 1, characterized in that: The clamping assembly comprises a first fixing tube (132) which is installed in grooves at the left and right ends of the support column (6); the outer end of the first fixing tube (132) passes through the outer side surface of the support column (6); the interior of the first fixing tube (132) is connected to the first piston column (131) via a return spring (133); and the outer end of the first piston column (131) is connected to the second clamping mechanism (13) having an arc-shaped structure; The first clamping mechanism (10) is arranged in a funnel shape.

3. A hydraulic engineering penstock stiffening ring welding machine according to claim 1, characterized in that: Manual telescopic rods (41) are installed below and inside the second adjustment seat (4); the second adjustment seat (4) is connected to the upper surface of the fixed base plate (1) via the manual telescopic rod (41) below, and the second adjustment seat (4) is connected to the fixed plate (8) via the manual telescopic rod (41) inside and the connecting spring (42).

4. A hydraulic engineering penstock stiffening ring welding machine according to claim 1, characterized in that: Both the front and rear sides of the first adjustment seat (3) are provided with connecting adjustment rods (5) in an "L"-shaped structure, one end of the connecting adjustment rod (5) passes through the middle interior of the second adjustment seat (4), and the second adjustment seat (4) rises and falls synchronously with the first adjustment seat (3).

5. The hydraulic engineering penstock stiffening ring welding machine according to claim 1, characterized in that: The transverse centerline of the welding gun assembly (9) and the transverse centerline of the support column (6) are on the same horizontal plane.

6. The hydraulic engineering penstock stiffening ring welding machine according to claim 1, characterized in that: A rotating rod (83) is symmetrically grooved inside a side surface of the fixed plate (8) away from the second adjustment seat (4), a connecting frame (82) is installed outside the rotating rod (83), a vortex spring (84) is nested and connected to the outside of one end of the rotating rod (83), and an extrusion limiting roller (81) is rotatably connected to one end of the connecting frame (82).

7. The hydraulic engineering penstock stiffening ring welding machine according to claim 1, characterized in that: A bidirectional screw rod (111) is rotatably mounted above the two fixed base plates (1), and self-push rods (11) are threadedly connected to the outer sides of both ends of the bidirectional screw rod (111). The lower end of the self-push rod (11) is inserted into a groove provided on the upper surface of the fixed base plate (1), and the upper end of the self-push rod (11) is arranged to fit the outer side surface of the fixed plate (8). The two fixed plates (8) form a synchronously moving structure towards each other through the self-push rod (11).

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