Wind power jacket steel welding device

Abstract

The invention belongs to the technical field of welding, and discloses a wind power jacket steel welding device which comprises a supporting column mounted at the top of a base, a top seat mounted at the top of the supporting column, a supporting ring rotatably mounted at the bottom of the top seat, a welding mechanism mounted on the right side of the bottom of the top seat, and a motor mounted at the bottom of the base. A rotating disc is rotationally mounted at the top of the base, and two sets of workpieces are placed on the upper surface of the rotating disc. According to the device, front and rear groups of sealing cylinders hinged to the inner wall of a placement cavity obtain transmission liquid through communicating hoses, when a third telescopic rod drives a piston to move downwards and pushes the transmission liquid in the transmission cylinders, power of the transmission liquid is transmitted into a sealing column, the sealing column drives a clamping plate to move towards the outer surface of a workpiece, and the workpiece is clamped. The left clamping plate and the right clamping plate which are symmetrically distributed are driven by the sealing column to automatically abut against the outer surface of the workpiece in a matched mode and are attached to the outer surface of the workpiece, so that friction force and clamping force between the clamping plates and the workpiece are generated, and the functions of automatic centering and weld joint butt joint of the workpiece are achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of welding, and in particular relates to a steel welding device for a wind power conduit frame. Background Art

[0002] Wind power conduit is a mature offshore wind power equipment infrastructure, responsible for providing support and fixation for offshore wind turbines. Its basic structure includes a base, a vertical conduit and a longitudinal and transverse rod connection part. Among them, the vertical conduit that constitutes the conduit is welded by multiple groups of steel round pipes. The existing wind power conduit steel welding device generally has two welding methods for the steel round pipes: horizontal and vertical: Horizontal placement: Place two groups of round tubes to be welded horizontally and fix them with a clamp so that their welding surfaces are in contact. Then, the welding gun is moved in a circular motion around the axis of the steel round tube to complete the welding. However, this method is not suitable for cylindrical structures with larger sizes. Excessive circumference will cause the moving path of the welding gun to become longer, and the movement of the welding assembly will be easily restricted, resulting in possible deviation of the welding part, affecting the welding operation. In the prior art, another welding method has emerged, that is, the welding assembly is not moved, and the steel cylinder rotates with the clamp to complete the full coverage of the welding area. However, the steel round tube with larger size is prone to vibration and displacement during the rotation process, thereby causing cracks in the weld, affecting the welding effect. In addition, the excessive size of the steel round tube and the weight that is simultaneously increased with the expansion of the size will squeeze the rolling assembly. When rolling and driving the workpiece to rotate, the probability of vibration and displacement of the workpiece will further increase; Vertical placement: two sets of steel round pipes to be welded are placed vertically along the axis, and the movable welding structure is used to perform circular motion around the weld while performing welding operations. However, this type of moving welding structure is relatively complex, and the welding structure needs to perform both movement and welding operations at the same time, which greatly increases the failure rate of the equipment; Therefore, it needs to be solved urgently. Summary of the invention

[0003] The object of the present invention is to provide a wind power conduit steel welding device to solve the problems raised in the above background technology.

[0004] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a wind power conduit frame steel welding device, comprising a support column installed on the top of a base, a top seat installed on the top of the support column, a support ring rotatably installed on the bottom of the top seat, a welding mechanism installed on the right side of the bottom of the top seat, a motor installed on the bottom of the base, a turntable rotatably installed on the top of the base, two groups of workpieces are placed on the upper surface of the turntable, the output shaft of the motor is rotatably connected to the turntable, a fixed column is fixedly connected to the top of the turntable, multiple groups of rotating shafts equidistantly distributed in a circle are rotatably installed between the base and the top seat, gear two and gear one are fixedly installed on the upper and lower sides of the outer surface of the rotating shaft in sequence, and a synchronous clamping mechanism is installed on the top of the fixed column and the bottom of the support ring; The synchronous clamping mechanism comprises a clamping ring, and the upper and lower groups of the clamping rings are fixedly connected to the supporting ring and the fixing column respectively; a gear three is fixedly installed on the outer surface of the clamping ring, and the upper and lower groups of the gear three are respectively meshed with the gear two and the gear one; a placement cavity is opened on the left and right sides of the inner ring surface of the clamping ring; a sealing box is installed at the bottom of the inner wall of the placement cavity; the inner cavity of the sealing box is filled with transmission fluid; a transmission cylinder is fixedly connected to the top of the sealing box; a telescopic rod three is fixedly installed on the top of the inner wall of the placement cavity; a piston is fixedly connected to the telescopic end of the telescopic rod three; the piston sealing sleeve is arranged in the transmission cylinder; a sealing cylinder is movably hinged on the front and rear sides of the inner wall of the placement cavity away from the workpiece; a sealing column and a spring are movably sleeved inside the sealing cylinder; two ends of the spring are elastically connected to the inner end of the sealing cylinder and the sealing column respectively; a clamping plate is elastically hinged on the other end of the sealing column; the clamping plate is adapted to abut against the outer ring surface of the workpiece; a connecting hose is installed between the sealing cylinder and the sealing box.

[0005] As a preferred solution of the present invention, the welding mechanism includes a telescopic rod 1 fixedly installed on the right side of the bottom of the top seat, a telescopic rod 2 is fixedly installed on the telescopic end of the telescopic rod 1, the axis of the telescopic rod 2 is perpendicular to the outer surface of the workpiece, and a welding gun is fixedly installed on the telescopic end of the telescopic rod 2.

[0006] As a preferred solution of the present invention, the axial cross-section of the sealing column is in a "T" shape, the inner end of the sealing column is in an interference fit with the inner wall of the sealing cylinder, and the transmission fluid is sealed and filled in the inner cavity of the sealing cylinder through a connecting hose.

[0007] As a preferred solution of the present invention, the axes of the front and rear two groups of sealing cylinders and sealing columns pass through the axis of the workpiece, the clamping plate is made of metal, and the abutting surface between the clamping plate and the workpiece is of rough design.

[0008] As a preferred solution of the present invention, the upper surface of the turntable is smoothly polished, a group of the workpieces located on the lower side are abutted and supported on the upper surface of the turntable, and the two groups of workpieces are coaxially abutted and distributed.

[0009] As a preferred solution of the present invention, the rotating shafts are arranged in four groups and are equidistantly distributed on the outer side surface of the gear three. The upper and lower groups of the gear three have the same rotation speed and the same direction of rotation.

[0010] As a preferred solution of the present invention, when the sealing column extends outward, the spring is in a stretched state.

[0011] As a preferred solution of the present invention, the diameter of the piston is equal to the inner diameter of the sealing cylinder, and the transmission fluid is made of kerosene.

[0012] The beneficial effects of the present invention are as follows: 1. The device is designed with two sets of upper and lower synchronous clamping mechanisms for synchronously clamping and fixing two sets of workpieces to be welded, so that the upper and lower sets of workpieces are relatively still during rotation welding, and the vibration and deviation caused by the rotation of the workpieces are minimized. A clamping ring is provided on its inner ring surface to open two sets of placement cavities, and a transmission medium transmission fluid is provided through a sealing box located on the inner wall of the placement cavity, so that the front and rear sealing cylinders hinged to the inner wall of the placement cavity obtain the transmission fluid through a connecting hose. When the telescopic rod drives the piston to move downward and pushes the transmission fluid in the transmission cylinder, its power is transmitted to the sealing column, so that the sealing column drives the clamping plate to move toward the outer surface of the workpiece. The left and right sets of symmetrically distributed clamping plates are automatically adapted to abut and fit with the outer surface of the workpiece under the drive of the sealing column to generate friction and clamping force with the workpiece, thereby realizing the automatic centering and weld butt joint functions of the workpiece.

[0013] 2. Then, by starting the motor, the turntable, the fixed column, the clamping ring and the gear three on the lower side are driven to rotate, and the power is transmitted to the clamping ring on the upper side through the gear one, the rotating shaft, the gear two and the gear three on the upper side, so that the clamping rings on the upper and lower sides can realize synchronous rotation and ensure relative stillness. The workpiece fixed by the clamping ring is driven to rotate by the friction force generated by the clamping plate and the clamping plate. Since the two groups of workpieces to be welded are vertical, the pressure formed by the weld at the joint can be provided by the gravity of the workpiece on the upper side, avoiding the interference of the pressure at the joint of the workpieces due to horizontal clamping, and further improving the welding quality.

[0014] 3. The device realizes the clamping and adapting function for workpieces of different sizes by means of the sealing cylinder, sealing column and spring arranged in the placement cavity. The front and rear two sets of sealing cylinders hinged to the inner wall of the placement cavity are arranged, so that the sealing sleeve is provided with a spring and a sealing column, and the sealing column is used to movably hinge the clamping plate, and the clamping plate is fan-shaped. When the pressure from the transmission fluid is given to the sealing column, the sealing column extends outward and drives the clamping plate to move toward the workpiece. According to the size of the workpiece, the clamping plate will bend into an arc structure with different diameter values ​​under the push of the sealing column, and the sealing column and the sealing cylinder as a whole can also adapt to the clamping plate with different bending degrees by rotating. The clamping plate can automatically adapt to the workpiece in an all-round manner, making the device more applicable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the front appearance of the overall structure of the present invention; Figure 2 It is a front perspective cutaway schematic diagram of the overall structure of the present invention; Figure 3 For the present invention Figure 2 A magnified schematic diagram of the structure at center A; Figure 4 It is a front plan view cutaway schematic diagram of the overall structure of the present invention; Figure 5 For the present invention Figure 4 A magnified schematic diagram of the structure at B in the middle; Figure 6 It is a top view and cutaway schematic diagram of the rotating shaft, gear one, clamping ring and gear three of the present invention; Figure 7 For the present invention Figure 6 A magnified schematic diagram of the structure at C in the middle; Figure 8 It is a schematic diagram of the cooperation between the synchronous clamping mechanism and the workpiece of the present invention; Fig. 9 It is a partial separation schematic diagram of the synchronous clamping mechanism of the present invention.

[0016] In the figure: 1. base; 2. motor; 3. turntable; 4. pillar; 5. top seat; 6. telescopic rod 1; 7. telescopic rod 2; 8. welding gun; 9. fixing column; 10. supporting ring; 11. rotating shaft; 12. gear 1; 13. gear 2; 14. clamping ring; 15. gear 3; 16. placing chamber; 17. sealing box; 18. transmission cylinder; 19. transmission fluid; 20. telescopic rod 3; 21. piston; 22. sealing cylinder; 23. sealing column; 24. spring; 25. clamping plate; 26. workpiece; 27. connecting hose. DETAILED DESCRIPTION

[0017] 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.

[0018] like Figures 1 to 9 As shown, an embodiment of the present invention provides a steel welding device for a wind power conduit frame, comprising a support column 4 installed on the top of a base 1, a top seat 5 installed on the top of the support column 4, a support ring 10 rotatably installed on the bottom of the top seat 5, a welding mechanism installed on the right side of the bottom of the top seat 5, a motor 2 installed on the bottom of the base 1, a turntable 3 rotatably installed on the top of the base 1, two groups of workpieces 26 are placed on the upper surface of the turntable 3, the output shaft of the motor 2 is rotatably connected to the turntable 3, a fixed column 9 is fixedly connected to the top of the turntable 3, a plurality of groups of rotating shafts 11 equidistantly distributed in a circle are rotatably installed between the base 1 and the top seat 5, a gear 2 13 and a gear 1 12 are fixedly installed on the upper and lower sides of the outer surface of the rotating shaft 11 in sequence, and a synchronous clamping mechanism is installed on the top of the fixed column 9 and the bottom of the support ring 10; The synchronous clamping mechanism includes a clamping ring 14, and the upper and lower groups of clamping rings 14 are fixedly connected to the support ring 10 and the fixed column 9 respectively. A gear three 15 is fixedly installed on the outer surface of the clamping ring 14, and the upper and lower groups of gear three 15 are respectively meshed with the gear two 13 and the gear one 12. The left and right sides of the inner ring surface of the clamping ring 14 are provided with a placement cavity 16, and a sealing box 17 is installed at the bottom of the inner wall of the placement cavity 16. The inner cavity of the sealing box 17 is filled with a transmission fluid 19, and the top of the sealing box 17 is fixedly connected to a transmission cylinder 18. The top of the inner wall of the placement cavity 16 is fixedly installed with a telescopic rod three 20. The telescopic end of the telescopic rod 20 is fixedly connected with a piston 21, and the piston 21 is sealed and sleeved in the transmission cylinder 18. The front and rear sides of the inner wall of the placement chamber 16 away from the workpiece 26 are movably hinged with a sealing cylinder 22. The inside of the sealing cylinder 22 is movably sleeved with a sealing column 23 and a spring 24. The two ends of the spring 24 are elastically connected to the inner ends of the sealing cylinder 22 and the sealing column 23, respectively. The other end of the sealing column 23 is elastically hinged with a clamping plate 25, which is adapted to abut against the outer annular surface of the workpiece 26. A connecting hose 27 is installed between the sealing cylinder 22 and the sealing box 17. The device is designed with two sets of upper and lower synchronous clamping mechanisms for synchronously clamping and fixing two sets of workpieces 26 to be welded, so that the upper and lower sets of workpieces 26 are relatively stationary during rotation welding, and the vibration and offset caused by the rotation of the workpiece 26 are reduced to the maximum extent. The clamping ring 14 is provided with two sets of placement chambers 16 on its inner ring surface, and the transmission medium transmission fluid 19 is provided through the sealing box 17 located on the inner wall of the placement chamber 16, so that the front and rear sets of sealing cylinders 22 hinged to the inner wall of the placement chamber 16 obtain the transmission fluid 19 through the connecting hose 27. When the telescopic rod 20 drives the piston 21 to move downward and pushes the transmission fluid 19 in the transmission cylinder 18, its power is transmitted to the sealing column 23, so that the sealing column 23 drives the clamping plate 25 to move toward the outer surface of the workpiece 26. The left and right sets of symmetrically distributed clamping plates 25 are automatically adapted to abut and fit with the outer surface of the workpiece 26 under the drive of the sealing column 23, so as to generate friction and clamping force with the workpiece 26, so as to realize the automatic centering and weld butt joint function of the workpiece 26.

[0019] Then, by starting the motor 2, and driving the turntable 3, the fixed column 9, the clamping ring 14 and the gear three 15 on the lower side to rotate, the power is transmitted to the clamping ring 14 on the upper side through the gear one 12, the rotating shaft 11, the gear two 13 and the gear three 15 on the upper side, so that the clamping rings 14 on the upper and lower sides can achieve synchronous rotation and ensure relative stillness. The workpiece 26 fixedly clamped by the clamping ring 14 is driven to rotate by the friction force generated by the clamping plate 25 and the clamping plate 25. Since the two groups of workpieces 26 to be welded are vertical, the pressure formed by the weld at the joint can be provided by the gravity of the workpiece 26 on the upper side, thereby avoiding the interference of the pressure at the joint of the workpiece 26 due to horizontal clamping, and further improving the welding quality.

[0020] The welding mechanism includes a telescopic rod 1 6 fixedly mounted on the right side of the bottom of the top seat 5, a telescopic rod 2 7 is fixedly mounted on the telescopic end of the telescopic rod 1 6, the axis of the telescopic rod 2 7 is perpendicular to the outer surface of the workpiece 26, and a welding gun 8 is fixedly mounted on the telescopic end of the telescopic rod 2 7; The welding gun 8 is perpendicular to the axis of the workpiece 26. The horizontal distance between the welding gun 8 and the workpiece 26 is controlled by the telescopic rod 2 7, and the vertical height between the welding gun 8 and the workpiece 26 is controlled by the telescopic rod 1 6, so that the welding gun 8 can be flexibly adjusted.

[0021] The axial cross-section of the sealing column 23 is in a "T" shape, and an inner end of the sealing column 23 is in an interference fit with the inner wall of the sealing cylinder 22, and the transmission fluid 19 is sealed and filled in the inner cavity of the sealing cylinder 22 through the connecting hose 27; The sealing column 23 is adapted to be matched in the sealing cylinder 22 , and the transmission fluid 19 flows into the sealing cylinder 22 to generate power to push the clamping plate 25 .

[0022] The axes of the front and rear sealing cylinders 22 and the sealing columns 23 pass through the axis of the workpiece 26. The clamping plate 25 is made of metal, and the abutting surface between the clamping plate 25 and the workpiece 26 is of rough design. The device realizes the clamping and adapting function of workpieces 26 of different sizes by means of the sealing cylinder 22, the sealing column 23 and the spring 24 arranged in the placement cavity 16. By means of the front and rear two sets of sealing cylinders 22 hinged to the inner wall of the placement cavity 16, the sealing sleeves are provided with the spring 24 and the sealing column 23, and the sealing column 23 is used to movably hinge the clamping plate 25, the clamping plate 25 is fan-shaped, when the pressure from the transmission fluid 19 is given to the sealing column 23, the sealing column 23 extends outward and drives the clamping plate 25 to move toward the workpiece 26, according to the different sizes of the workpiece 26, the clamping plate 25 will bend into an arc structure with different diameter values ​​under the push of the sealing column 23, and the sealing column 23 and the sealing cylinder 22 as a whole can also adapt to the clamping plate 25 with different bending degrees by rotating, the clamping plate 25 can automatically adapt to the workpiece 26 in an all-round manner, making the applicability of the device stronger.

[0023] The upper surface of the turntable 3 is designed to be smooth and polished, and a group of workpieces 26 located at the lower side are supported against the upper surface of the turntable 3, and the two groups of workpieces 26 are coaxially abutted and distributed; The workpiece 26 is located on the upper surface of the turntable 3 . When the sealing column 23 and the clamping plate 25 push the workpiece 26 to move to the center position, the friction between the workpiece 26 and the turntable 3 is small, thereby avoiding resistance to the workpiece 26 .

[0024] The rotating shafts 11 are arranged in four groups and are equidistantly distributed on the outer side of the gear three 15. The upper and lower groups of gear three 15 have the same rotation speed and the same direction of rotation. The rotating shaft 11 is responsible for driving the gear 1 12 and the gear 2 13 to complete the lossless transmission of power between the upper and lower sets of synchronous clamping mechanisms, so that the upper and lower sets of workpieces 26 clamped by the clamping plate 25 can rotate synchronously in a relatively static manner to complete the welding operation.

[0025] When the sealing column 23 extends outward, the spring 24 is in a stretched state; When the sealing column 23 extends outward from the sealing tube 22 , the spring 24 is stretched. At this time, the spring 24 generates a rebound pulling force in the opposite direction, and the rebound pulling force can just drive the sealing column 23 to reset.

[0026] The diameter of the piston 21 is equal to the inner diameter of the sealing cylinder 22, and the transmission fluid 19 is made of kerosene; The transmission efficiency between the piston 21 and the sealing cylinder 22 is 1:1, which is conducive to accurately transmitting the power of the telescopic rod 3 20. The transmission fluid 19 can provide lubrication for the piston 21, the sealing column 23 and the sealing cylinder 22 to reduce wear.

[0027] Working principle: First, two groups of workpieces 26 to be welded are placed vertically on the turntable 3 in sequence, so that the workpiece 26 located on the upper side abuts against the top of the workpiece 26 located on the lower side, so that the welding surfaces of the two groups of workpieces 26 abut together and form a weld. At this time, the two groups of synchronous clamping mechanisms are started at the same time: the telescopic rod 3 20 is started, and the piston 21 is pushed upward to push the transmission fluid 19 in the sealing box 17 into the sealing cylinder 22, so that the sealing column 23 is pushed outward under the action of the hydraulic pressure, and the spring 24 is stretched, as shown in FIG. Figure 6 As shown, multiple groups of sealing columns 23 push the clamping plate 25 and close toward the outer annular surface of the workpiece 26, so that the clamping plate 25 gradually contacts the workpiece 26, and through the rotation and adaptation of the sealing cylinder 22 and the sealing column 23, the side of the clamping plate 25 facing the workpiece 26 is completely adapted and abutted against the outer annular surface of the workpiece 26, and a clamping pressure is generated. At this time, the workpiece 26 is clamped and driven to a position where its own axis coincides with the axis of the turntable 3, and the pressure at the abutment of the upper and lower groups of workpieces 26 is provided by the gravity of the workpiece 26 located on the upper side; Then, the telescopic rod 1 6 is started, and the telescopic rod 2 7 and the welding gun 8 are driven to move and adjust the height so that the welding height of the welding gun 8 is consistent with the height of the weld of the workpiece 26. Subsequently, the telescopic rod 2 7 is started, and the welding gun 8 is driven to gradually approach the weld of the workpiece 26. Subsequently, the telescopic rod 1 6 and the telescopic rod 2 7 are stopped, and the welding gun 8 is started to weld the weld of the workpiece 26. Finally, when the welding gun 8 performs the welding operation, the motor 2 is started, and the turntable 3, the fixed column 9 and the clamping ring 14 on the lower side are driven to rotate. At the same time, the gear three 15 on the lower side drives the gear one 12, the rotating shaft 11 and the gear two 13 to rotate. The gear two 13 transmits the power to the gear three 15 and the clamping ring 14 on the upper side, so that the upper and lower groups of clamping rings 14 can rotate synchronously in the same direction with the same torque and speed, driving the upper and lower groups of workpieces 26 to rotate at the same time, so that the two groups of workpieces 26 are relatively still. As the workpiece 26 rotates, the welding gun 8 completes one circle of welding and completes the welding operation.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A steel welding device for a wind turbine conduit frame, comprising a base (1) having a support (4) mounted on the top, a top seat (5) mounted on the top of the support (4), a support ring (10) rotatably mounted on the bottom of the top seat (5), a welding mechanism mounted on the right side of the bottom of the top seat (5), characterized in that: A motor (2) is mounted at the bottom of the base (1), a turntable (3) is rotatably mounted at the top of the base (1), two groups of workpieces (26) are placed on the upper surface of the turntable (3), an output shaft of the motor (2) is rotatably connected to the turntable (3), a fixing column (9) is fixedly connected to the top of the turntable (3), a plurality of groups of rotating shafts (11) equidistantly distributed in a circle are rotatably mounted between the base (1) and the top seat (5), a gear 2 (13) and a gear 1 (12) are fixedly mounted on the upper and lower sides of the outer surface of the rotating shaft (11), and a synchronous clamping mechanism is mounted on the top of the fixing column (9) and the bottom of the support ring (10); The synchronous clamping mechanism comprises a clamping ring (14), wherein the upper and lower groups of the clamping ring (14) are fixedly connected to the support ring (10) and the fixing column (9) respectively; a gear three (15) is fixedly mounted on the outer surface of the clamping ring (14); the upper and lower groups of the gear three (15) are respectively meshed with the gear two (13) and the gear one (12); a placement cavity (16) is provided on both left and right sides of the inner ring surface of the clamping ring (14); a sealing box (17) is installed at the bottom of the inner wall of the placement cavity (16); the inner cavity of the sealing box (17) is filled with transmission fluid (19); a transmission cylinder (18) is fixedly connected to the top of the sealing box (17); and a telescopic rod three (20) is fixedly mounted on the top of the inner wall of the placement cavity (16); The telescopic end of the telescopic rod (20) is fixedly connected to a piston (21), and the piston (21) is sealed and sleeved in a transmission cylinder (18). The front and rear sides of the inner wall of the placement cavity (16) away from the workpiece (26) are both movably hinged with a sealing cylinder (22), and the interior of the sealing cylinder (22) is movably sleeved with a sealing column (23) and a spring (24), and the two ends of the spring (24) are elastically connected to the inner end of the sealing cylinder (22) and the sealing column (23), respectively. The other end of the sealing column (23) is elastically movably hinged with a clamping plate (25), and the clamping plate (25) is adapted to abut against the outer annular surface of the workpiece (26). A connecting hose (27) is installed between the sealing cylinder (22) and the sealing box (17).

2. A wind power conduit steel welding device according to claim 1, characterized in that: The welding mechanism comprises a telescopic rod 1 (6) fixedly mounted on the right side of the bottom of the top seat (5), a telescopic rod 2 (7) fixedly mounted on the telescopic end of the telescopic rod 1 (6), an axis of the telescopic rod 2 (7) being perpendicular to the outer surface of the workpiece (26), and a welding gun (8) fixedly mounted on the telescopic end of the telescopic rod 2 (7).

3. A wind power conduit steel welding device according to claim 2, characterized in that: The axial cross-section of the sealing column (23) is in a "T" shape, an inner end of the sealing column (23) is in an interference fit with the inner wall of the sealing cylinder (22), and the transmission fluid (19) is sealed and filled in the inner cavity of the sealing cylinder (22) through a connecting hose (27).

4. A wind power conduit steel welding device according to claim 3, characterized in that: The axes of the front and rear groups of sealing cylinders (22) and sealing columns (23) both pass through the axis of the workpiece (26); the clamping plate (25) is made of metal; and the abutting surface between the clamping plate (25) and the workpiece (26) is of a rough design.

5. A wind power conduit steel welding device according to claim 4, characterized in that: The upper surface of the turntable (3) is of a smooth and polished design, and a group of the workpieces (26) located on the lower side are supported in abutment against the upper surface of the turntable (3), and the two groups of workpieces (26) are coaxially abutted and distributed.

6. A wind power conduit steel welding device according to claim 5, characterized in that: The rotating shafts (11) are arranged in four groups and are equidistantly distributed on the outer side surface of the gear three (15) around the circumference. The upper and lower groups of the gear three (15) have the same rotation speed and the same direction of rotation.

7. A wind power conduit steel welding device according to claim 6, characterized in that: When the sealing column (23) extends outward, the spring (24) is in a stretched state.

8. A wind power conduit steel welding device according to claim 7, characterized in that: The diameter of the piston (21) is equal to the inner diameter of the sealing cylinder (22), and the transmission fluid (19) is made of kerosene.

Images