Steel penstock assembling device and method

Abstract

The invention relates to a pressure steel pipe assembling device and method.The pressure steel pipe assembling device comprises a base, a first rack and a second rack, the first rack is used for bearing a first tile, the first rack is movably connected with the base, and the first rack can turn over relative to the base; the second rack is used for bearing a second tile, and the second rack is movably arranged on the base and can move in the direction close to the first rack so that the first tile and the second tile can be in butt joint to form the pressure steel pipe. The second tile and the first tile can be in butt joint to form the pressure steel pipe by moving the second rack, then the pressure steel pipe can be taken down after the first rack is turned over, and butt joint and fixation of the first tile and the second tile are achieved only manually in the whole process. And the processes of butt joint of the tiles, overturning of the pressure steel pipe, taking and placing and the like are completely automatically operated, safety risks caused by manual butt joint and hoisting overturning are eliminated, and the automation degree, the butt joint precision and the assembly efficiency are improved.

Description

Technical Field

[0001] This application relates to the field of pressure steel pipe assembly technology, and in particular to a pressure steel pipe assembly device and method. Background Technology

[0002] The pressure steel pipes for hydropower station water diversion systems are generally fabricated in sections on-site. Small-diameter pressure steel pipes are often formed by directly rolling a single sheet, while large-diameter pressure steel pipes are often formed by rolling two sheets and then assembling them into a circle. Currently, the industry standard for assembling two sheets into a circle for pressure steel pipes is manual vertical assembly. After assembly, a crane is used to flip the pipe to a horizontal position for longitudinal seam welding. During the fabrication process, in the processing workshop, a crane is used to hoist the pressure steel pipe sheets onto a manual vertical assembly platform. Workers use jacks, wedges, and other tools to assemble the pressure steel pipe and adjust the longitudinal seam. After assembly, the crane lifts the pressure steel pipe from vertical to horizontal for subsequent longitudinal seam welding. This fabrication method has the following main disadvantages:

[0003] Low construction efficiency: Traditional vertical assembly process relies heavily on manual operation, requiring the use of jacks, wedges, and clamps for assembly. Taking a 3m single-section pressure steel pipe as an example, the assembly time for a single operation generally exceeds 4 hours, resulting in low overall construction efficiency and severely restricting the production progress of pressure steel pipes.

[0004] High labor costs: In traditional vertical assembly operations, at least four operators are needed to coordinate the simultaneous adjustment of the two longitudinal seams, while the pipe section turning process requires an additional three operators. Under this process model, labor costs account for a significantly high proportion of the total production cost, directly restricting the project's economic benefits.

[0005] The safety risks are prominent: the height of pipe section assembly is generally 3m, which requires the erection of scaffolding or ladders to assist the operation, posing safety risks such as falls from height and falling objects; during the vertical assembly process, the pipe sections need to be turned over by lifting equipment, which is prone to multiple safety risks such as clamps falling off, wire ropes breaking, and personnel being crushed, posing a serious threat to the safety of the workers. Summary of the Invention

[0006] Therefore, it is necessary to provide a pressure steel pipe assembly device to address the problems of inconvenience, low assembly efficiency, and high installation risk associated with existing manual assembly methods.

[0007] The first aspect of this application provides a pressure steel pipe assembly device for assembling a first tile and a second tile to form a pressure steel pipe, the pressure steel pipe assembly device comprising:

[0008] Base;

[0009] A first frame is used to support the first tile. The first frame is movably connected to the base and is capable of rotating relative to the base.

[0010] The second frame is used to support the second tile. The second frame is movably mounted on the base and can move toward the first frame so that the first tile and the second tile are joined to form the pressure steel pipe.

[0011] In one embodiment, the pressure steel pipe assembly device further includes a first driving member, the fixed end of which is movably connected to the base, and the output end of which is movably connected to the first frame. The first driving member is used to drive the first frame to rotate relative to the base.

[0012] In one embodiment, the base is provided with a groove, the first drive member is disposed in the groove, and the output end of the first drive member extends out of the groove when the first frame is flipped.

[0013] In one embodiment, the base is provided with a guide rail, and the second frame is movably mounted on the guide rail.

[0014] In one embodiment, at least one of the first frame and the second frame is provided with a fixing member, the fixing member being disposed at one end of the first frame and the second frame away from the base, the fixing member being used to fix at least one of the first tile and the second tile.

[0015] In one embodiment, the fastener is provided with a slot for engaging with the inner wall of the corresponding first or second tile.

[0016] In one embodiment, the fastener includes a connecting segment and a limiting segment connected to the connecting segment. The connecting segment is movably connected to at least one of the first frame and the second frame. The extending direction of the connecting segment intersects the extending direction of the limiting segment, and the slot is provided on the limiting segment.

[0017] In one embodiment, at least one of the first frame and the second frame is further provided with a corresponding card holder, the card holder being movably connected to the fixing member so that the fixing member can be rotated relative to the card holder.

[0018] In one embodiment, multiple card holders are provided, and the multiple card holders are spaced apart.

[0019] A second aspect of this application provides a method for assembling a pressure steel pipe, applied to the pressure steel pipe assembly device described in the first aspect of this application, the method comprising:

[0020] Place the first tile on the first frame, and place the second tile on the second frame;

[0021] The second frame moves the second tile toward the first frame so that the first tile aligns with the second tile.

[0022] The joint between the first tile and the second tile is fixed to form a pressure steel pipe;

[0023] The second rack moves away from the first rack;

[0024] The first frame is flipped over, which in turn causes the pressure steel pipe to flip over synchronously.

[0025] In the aforementioned pressure steel pipe assembly device, during assembly, the first tile is placed on the first frame, and the second tile is placed on the second frame. Then, an external force is applied to the second frame, causing it to move towards the first frame from the base until the first and second tiles align. The alignment is then fixed to form the pressure steel pipe. Next, an external force is applied to the first frame, causing it to rotate relative to the base, allowing the pressure steel pipe to be removed. In this way, the pressure steel pipe assembly device can perform docking, rotation, and removal / placement steps, eliminating the safety risks associated with manual docking and hoisting / rotation, while also improving docking accuracy and assembly efficiency. Attached Figure Description

[0026] Figure 1 This is a structural diagram of a pressure steel pipe assembly device according to an embodiment of this application.

[0027] Figure 2 This is a top view of a pressure steel pipe assembly device according to an embodiment of this application.

[0028] Figure 3 This is a structural diagram of the first frame of a pressure steel pipe assembly device according to an embodiment of this application.

[0029] Figure 4 This is a structural diagram of the second frame of a pressure steel pipe assembly device according to an embodiment of this application.

[0030] Figure 5 This is a structural diagram of the first / second fixing member of a pressure steel pipe assembly device according to an embodiment of this application.

[0031] Figure 6 This is a structural diagram of a pressure steel pipe assembly device according to an embodiment of this application, when the first tile and the second tile are not connected.

[0032] Figure 7This is a structural diagram of the pressure steel pipe assembly device according to an embodiment of this application, showing the first tile and the second tile being connected.

[0033] Figure 8 This is a structural diagram of a pressure steel pipe assembly device according to an embodiment of this application, after the first tile and the second tile are connected and flipped.

[0034] Figure 9 This is a schematic diagram of the common structure of the movable support, the hydraulic cylinder support, and the tilting support of the pressure steel pipe assembly device according to an embodiment of this application.

[0035] Explanation of reference numerals in the attached figures:

[0036] 10. Base; 11. Groove; 12. Mounting base;

[0037] 20. First frame; 21. First drive component; 22. First card holder; 23. First fixing component; 231. First connecting section; 232. First limiting section; 233. First card slot; 234. First hinge hole; 24. Movable support; 25. Hydraulic cylinder support; 26. Tilting support;

[0038] 30. Second frame; 31. Load-bearing beam; 32. Guide rail; 33. Second drive component; 34. Second fixing component; 341. Second connecting section; 342. Second limiting section; 343. Second slot; 344. Second hinge hole; 35. Second mounting base;

[0039] 40. The first tile;

[0040] 50. The second tile;

[0041] 60. Base; 61. Ear plate; 62. Stiffening rib; 63. Shaft hole. Detailed Implementation

[0042] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0043] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0044] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0045] like Figure 1 As shown, an embodiment of this application provides a pressure steel pipe assembly device for connecting a first tile 40 and a second tile 50 to form a pressure steel pipe.

[0046] It should be noted that the cross-sectional shape of the first tile and the second tile can be semi-circular, that is, the cross-sectional shape of the pressure steel pipe formed by the butt joint of the first tile and the second tile is circular. Of course, in other embodiments, the cross-sectional shape of the first tile and the second tile can also be other shapes such as "U".

[0047] In this embodiment, the pressure steel pipe assembly device includes a base 10, a first frame 20, and a second frame 30. Both the first frame 20 and the second frame 30 are located on the base 10.

[0048] The first frame 20 is movably mounted on the base 10 and is used to support the first tile 40. The first frame 20 can be movably connected to the base 10 so that the first frame 20 can be rotated relative to the base 10.

[0049] Optionally, the first frame 20 is made of steel truss, thus ensuring the structural strength of the first frame 20.

[0050] The second frame 30 is movably mounted on the base 10 and is used to support the second tile 50. The second frame 30 can move towards or away from the first frame 20. When the second frame 30 moves towards the first frame 20, the second tile 50 placed on it moves synchronously with the second frame 30 until the second tile 50 placed on the second frame 30 aligns with the first tile 40 placed on the first frame 20 to form the required pressure steel pipe.

[0051] Optionally, the second frame 30 is made of steel truss to ensure the structural strength of the second frame 30.

[0052] During assembly, the aforementioned pressure steel pipe assembly device involves placing the first tile 40 on the first frame 20 and the second tile 50 on the second frame 30. An external force is then applied to the second frame 30, causing it to move towards the first frame 20 on the base 10 until the first tile 40 and second tile 50 align. The alignment of the first tile 40 and second tile 50 is then fixed to form the pressure steel pipe. Next, an external force is applied to the first frame 20, causing it to rotate relative to the base 10, allowing the pressure steel pipe to be removed. This pressure steel pipe assembly device achieves docking, rotation, and removal / placement, eliminating the safety risks associated with manual docking and hoisting / rotation, while also improving docking accuracy and assembly efficiency.

[0053] In one embodiment, see Figure 1 The pressure steel pipe assembly device also includes a first driving component 21. The fixed end of the first driving component 21 is movably connected to the base 10, and the output end of the first driving component 21 is movably connected to the first frame 20. Thus, when the first driving component 21 extends, it can drive the first frame 20 to rotate around its connection point with the base 10, thereby driving the first frame 20 to flip.

[0054] Furthermore, a groove 11 is provided on the base 10, and the first driving member 21 is disposed in the groove 11. The output end of the first driving member 21 can extend out of the groove 11 when the first frame 20 is flipped. Optionally, the first driving member 21 can be a hydraulic cylinder, a pneumatic cylinder, or an electric cylinder, etc. Of course, other driving structures can also be used to provide power, which will not be listed here. Thus, the groove 11 provides space within the base 10 for installing the first driving member 21, avoiding the direct mounting of the first driving member 21 on the surface of the base 10, which would further enlarge the overall structure. The recessed design also effectively avoids interference between the first driving member 21 and other structural components.

[0055] Furthermore, the fixed end of the first driving member 21 is mounted in the groove 11 via the hydraulic cylinder support 25, and the output end of the first driving member 21 is connected to the bottom of the first frame 20 via the movable support 24. The fixed end of the first driving member 21 can rotate relative to the hydraulic cylinder support 25, and the output end of the first driving member 21 can rotate relative to the movable support 24, with a rotation angle of 0° to 90°. Thus, the first driving member 21, through the cooperation of the hydraulic cylinder support 25 and the movable support 24, can adapt to the tilting process of the first frame 20.

[0056] In addition, in order to provide stable support for the first frame 20, two sets of first drive components 21 can be provided. At the same time, in order to adapt to the two sets of first drive components 21, two sets of hydraulic cylinder supports 25 and movable supports 24 are also provided, and the two sets of first drive components 21 move synchronously to jointly support the first frame 20.

[0057] In one embodiment, see Figure 1 or Figure 2 The base 10 is also provided with a mounting seat 12. The side of the first frame 20 is provided with a flip support 26. The flip support 26 is fixedly installed on the mounting seat 12. The first frame 20 and the flip support 26 are rotatably connected. Thus, by setting the flip support 26 on the mounting seat 12, the first frame 20 can be flipped on the base 10 through the flip support 26.

[0058] like Figure 9 As shown, the movable support 24, the hydraulic cylinder support 25, and the tilting support 26 have the same structure. All three include a base 60, on which two ear plates 61 are vertically arranged. The two ear plates 61 are spaced apart, and the space between them forms an installation space for installing corresponding connecting structures. Through shaft holes 63 are opened at corresponding positions on the two ear plates 61, and stiffening ribs 62 are provided on the opposite sides of the two ear plates 61 to enhance the structural strength of the ear plates 61 on the base 60.

[0059] like Figure 2 and Figure 4 As shown, a guide rail 32 is provided on the base 10, and the guide rail 32 is horizontally opened on the surface of the base 10. The second frame 30 is movably disposed on the guide rail 32, so that the second frame 30 can move along the guide rail 32 to approach or move away from the first frame 20. A load-bearing beam 31 is provided at one end of the second frame 30 near the base 10, and a second driving member 33 is provided at one end of the load-bearing beam 31 near the base 10. The second driving member 33 is disposed on the guide rail 32, so that the second frame 30 can move along the guide rail 32 by means of the second driving member 33. Thus, the arrangement of the guide rail 32 can restrict the movement path of the second frame 30 to ensure that the second frame 30 does not deviate from its path during movement toward the first frame 20.

[0060] Specifically, the guide rails 32 are provided in at least two sets, which are arranged in parallel and extend towards the first frame 20. The second drive unit 33 is symmetrically arranged on the two sets of guide rails 32 to stably support the second frame 30 and drive it to move stably along the guide rails 32. The second drive unit 33 can employ a high-precision motor-driven gear transmission system to achieve movement on the guide rails 32, thereby ensuring smooth movement and accurate positioning.

[0061] In one embodiment, such as Figure 3 and Figure 4 As shown, at least one of the first frame 20 and the second frame 30 is provided with a fixing member. In this embodiment, both the first frame 20 and the second frame 30 are provided with fixing members, wherein the fixing member provided on the first frame 20 is a first fixing member 23, and the fixing member provided on the second frame 30 is a second fixing member 34. The first fixing member 23 is provided at the end of the first frame 20 opposite to the base 10, and the first fixing member 23 is used to fix the first tile 40 to the first frame 20; the second fixing member 34 is provided at the end of the second frame 30 opposite to the base 10, and the second fixing member 34 is used to fix the second tile 50 to the second frame 30. Furthermore, both the first fixing member 23 and the second fixing member 34 can be designed to be adjustable. The first fixing member 23 and the second fixing member 34 can be controlled by manual or electric adjustment mechanism to achieve quick tightening and loosening of the first fixing member 23 and the second fixing member 34, thereby adapting to different specifications of tiles. At the same time, it ensures that the first fixing member 23 and the second fixing member 34 are firm after fixing the first tile 40 and the second tile 50 without damaging the surface of the first tile 40 and the second tile 50.

[0062] like Figure 5 As shown, in one embodiment, the fastener includes a connecting segment and a limiting segment connected to the connecting segment. For example, the first fastener 23 includes a first connecting segment 231 and a first limiting segment 232, and the second fastener 34 includes a second connecting segment 341 and a second limiting segment 342. The first connecting segment 231 is movably connected to the first frame 20, and the second connecting segment 341 is movably connected to the second frame 30. The extending directions of the first connecting segment 231 and the first limiting segment 232 intersect, and the extending directions of the second connecting segment 341 and the second limiting segment 342 intersect. In this embodiment, the first connecting segment 231 is perpendicular to the first limiting segment 232, and the second connecting segment 341 is perpendicular to the second limiting segment 342.

[0063] Furthermore, the first fixing member 23 and the second fixing member 34 are also provided with slots. The first limiting segment 232 of the first fixing member 23 is provided with a first slot 233, and the second limiting segment 342 of the second fixing member 34 is provided with a second slot 343. When the first limiting segment 232 and the second limiting segment 342 respectively abut against the first tile 40 and the second tile 50, the first slot 233 is provided on the side where the first limiting segment 232 abuts against the first tile 40, and the second slot 343 is provided on the side where the second limiting segment 342 abuts against the second tile 50.

[0064] In one embodiment, such as Figure 3 and Figure 4 As shown, at least one of the first frame 20 and the second frame 30 is also provided with a corresponding mounting bracket. In this embodiment, the first frame 20 is provided with a first mounting bracket 22, and the second frame 30 is provided with a second mounting bracket 35. The first mounting bracket 22 is located at the end of the first frame 20 away from the base 10, and the second mounting bracket 35 is located at the end of the second frame 30 away from the base 10. The first fixing member 23 is also provided with a first hinge hole 234, through which the first mounting bracket 22 and the first fixing member 23 can be movably connected, thereby controlling the rotation of the first fixing member 23 around its connection point with the first mounting bracket 22. The second fixing member 34 is also provided with a second hinge hole 344, through which the second mounting bracket 35 and the second fixing member 34 can be movably connected, thereby controlling the rotation of the second fixing member 34 around its connection point with the second mounting bracket 35. Thus, by rotating the first fixing member 23 and the second fixing member 34, locking and unlocking operations for the first tile 40 and the second tile 50 are achieved.

[0065] Specifically, multiple first card holders 22 are provided, and these multiple first card holders 22 are spaced apart circumferentially along the end of the first frame 20. Similarly, multiple second card holders 35 are provided, and these multiple second card holders 35 are spaced apart circumferentially along the end of the second frame 30. Thus, through the multiple first card holders 22 and second card holders 35, and the corresponding first fixing members 23 and second fixing members 34, the periphery of the first tile 40 and the second tile 50 can be fixed, ensuring the stability of the first tile 40 mounted on the first frame 20 and the stability of the second tile 50 mounted on the second frame 30. In this embodiment, five sets of first card holders 22 and first fixing members 23, second card holders 35 and second fixing members 34 are arranged on each of the first frame 20 and the second frame 30 for fixing the first tile 40 and the second tile 50 respectively.

[0066] Based on the aforementioned pressure steel pipe assembly device, during construction, if... Figure 6As shown, the first tile 40 and the second tile 50 that need to be assembled into a circle are first hoisted onto the first frame 20 and the second frame 30 one by one using lifting equipment, ensuring that the first tile 40 and the second tile 50 are placed stably and without tilting on the corresponding first frame 20 and second frame 30.

[0067] like Figure 7 As shown, the first fixing member 23 and the second fixing member 34, located on the first frame 20 and the second frame 30 respectively, are used to fix the first tile 40 and the second tile 50 to the first frame 20 and the second frame 30 respectively. During fixing, it is necessary to check whether the contact surfaces of the first fixing member 23 and the first tile 40, and the second fixing member 34 and the second tile 50 are tight to avoid loosening. Then, the second driving member 33 is controlled to slowly move the second frame 30 towards the first frame 20 until the longitudinal seam of the first tile 40 on the first frame 20 and the second tile 50 on the second frame 30 are aligned. During the alignment process, the positions of the first tile 40 and the second tile 50 must be monitored to ensure accurate alignment. Simultaneously, the misalignment, gap, and pipe section roundness of the longitudinal seam of the first tile 40 and the second tile 50 are adjusted. After passing the adjustment, spot welding is performed at the longitudinal seam of the first tile 40 and the second tile 50 using welding equipment. Welding parameters must be controlled during welding to ensure weld quality. If the misalignment and pipe section roundness do not meet the technical requirements, they can be fine-tuned manually using jacks. When fine-tuning, care must be taken to control the force to avoid over-adjustment that could cause the tiles to deform.

[0068] like Figure 8 As shown, after the first tile 40 and the second tile 50 are fixed, the fixing between the second fixing member 34 and the second tile 50 can be loosened. Then, the second driving member 33 is controlled to move away from the first frame 20, and the second frame 30 moves synchronously to make room for the subsequent flipping operation of the first frame 20. After the second frame 30 moves into place, the first driving member 21 is activated. The piston rod of the first driving member 21 extends and drives the first frame 20 and the pressure steel pipe formed by welding the first tile 40 and the second tile 50 to flip synchronously by 90 degrees. During this flipping process, the flipping angle and speed need to be monitored to ensure that the flipped first frame 20 and the pressure steel pipe placed on it are smoothly placed into position. After flipping into place, loosen the first fixing part 23 on the first frame 20, and then use lifting equipment to lift the pressure steel pipe formed by the first tile 40 and the second tile 50 away from the pressure steel pipe assembly device. When lifting away, it is necessary to ensure the connection and structural stability of the pressure steel pipe to avoid collision and damage. Finally, control the first frame 20 to return to the initial position in preparation for the next rounding construction of the first tile 40 and the second tile 50.

[0069] A pressure steel pipe assembly method according to an embodiment of this application is applied to the pressure steel pipe assembly device described in any of the above embodiments of this application. The pressure steel pipe assembly method includes:

[0070] Place the first tile 40 on the first frame 20, and place the second tile 50 on the second frame 30;

[0071] The second frame 30 is driven to move the second tile 50 toward the first frame 20 so that the first tile 40 and the second tile 50 are aligned.

[0072] The joint between the first tile 40 and the second tile 50 is fixed to form a pressure steel pipe;

[0073] Drive the second frame 30 to move away from the first frame 20;

[0074] The first frame 20 is flipped over, which in turn causes the pressure steel pipe to flip over synchronously.

[0075] Therefore, through the above-mentioned pressure steel pipe assembly method, the entire assembly process only requires manual operation to fix the first tile 40 and the second tile 50, while the docking, flipping, and picking processes are fully automated, eliminating the safety risks caused by manual docking and hoisting flipping. At the same time, the automated operation improves docking accuracy and assembly efficiency.

[0076] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0077] It should be noted that if a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component. If a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0078] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A pressure pipe assembly apparatus for assembling a first tile with a second tile to form a pressure pipe, the apparatus comprising: The pressure steel pipe assembling device comprises: a base; a first rack for carrying the first tile, the first rack being movably connected with the base and capable of being flipped relative to the base; and a second rack for carrying the second tile, the second rack being movably arranged on the base and capable of moving towards the first rack so as to butt the first tile against the second tile to form the pressure steel pipe.

2. The bell and spigot assembly of claim 1, wherein, The pressure steel pipe assembling device further comprises a first driving member, a fixed end of the first driving member being movably connected with the base, and an output end of the first driving member being movably connected with the first rack, the first driving member being used to drive the first rack to flip relative to the base.

3. The bell and spigot assembly of claim 2, wherein, The base is provided with a recess, the first driving member is arranged in the recess, and the output end of the first driving member is adapted to extend out of the recess to support the first rack.

4. The penstock assembly of claim 1, wherein, The base is provided with a guide rail, and the second rack is movably arranged on the guide rail.

5. A penstock assembly according to any one of claims 1 to 4, wherein At least one of the first rack and the second rack is provided with a fixing member, the fixing member being arranged at an end of at least one of the first rack and the second rack away from the base, the fixing member being used to fix at least one of the first tile and the second tile.

6. The bell and spigot assembly of claim 5, wherein, The fixing member is provided with a clamping groove, the clamping groove being used to clamp the inner wall of the corresponding first tile or second tile.

7. The bell and spigot assembly of claim 6, wherein, The fixing member comprises a connecting segment and a limiting segment connected with the connecting segment, the connecting segment being movably connected with at least one of the first rack and the second rack, the extending direction of the connecting segment intersecting with the extending direction of the limiting segment, and the clamping groove being arranged on the limiting segment.

8. The bell and spigot assembly of claim 5, wherein, At least one of the first rack and the second rack is further provided with a clamping seat corresponding thereto, the clamping seat being movably connected with the fixing member so that the fixing member can flip relative to the clamping seat.

9. The bell and spigot assembly of claim 8, wherein, The clamping seat is provided with a plurality of clamping seats, the plurality of clamping seats being arranged at intervals.

10. A method of assembling a penstock, characterized by, The pressure steel pipe assembling method applied to the pressure steel pipe assembling device of any one of claims 1 to 9 comprises: placing the first tile on the first rack and placing the second tile on the second rack; moving the second rack and the second tile towards the first rack so as to butt the first tile against the second tile; fixing the butt joint of the first tile and the second tile to form the pressure steel pipe; moving the second rack away from the first rack; flipping the first rack and synchronously flipping the pressure steel pipe.

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