A steel pipe splicing and tightening device

Abstract

The application provides a steel pipe splicing and tightening device, which comprises a base, a head-end tightening device, a tail-end tightening device, synchronous clamping devices, assembly sliding devices and assembly translation devices. The head-end tightening device, the assembly sliding devices and the tail-end tightening device are sequentially arranged on the base along the X-axis direction and can be moved and adjusted according to splicing requirements. The synchronous clamping devices are sequentially arranged on the base along the X-axis direction and can effectively clamp and fix the steel pipe. The assembly translation devices can switch between a supporting state and an avoiding state according to the number of steel pipe joints. In the supporting state, the assembly translation devices are axially connected with the assembly sliding devices to form a multi-section independent supporting structure. In the avoiding state, the assembly translation devices are away from the base to provide an avoiding space for the sliding of the head-end tightening device. The device configuration can be quickly switched without manual intervention, the processing requirements of steel pipes with different numbers of joints can be met, and the production efficiency and the flexibility of the device are improved.

Description

Technical Field

[0001] This invention relates to the field of pipe fitting assembly technology, and in particular to a steel pipe splicing and tightening device. Background Technology

[0002] The assembly and tightening of steel pipes requires the use of multiple sections of threaded steel pipes.

[0003] The applicant has discovered that the prior art has at least the following technical problems:

[0004] First, existing steel pipe tightening equipment lacks efficiency and flexibility when handling steel pipe products with the same outer diameter but different numbers of sections. Specifically, when switching from handling two-section steel pipes to three-section steel pipes, or vice versa, existing equipment requires complex adjustments, reconfigurations, or even component replacements, resulting in low production efficiency and difficulty in ensuring precise alignment and stable support for products of different lengths during assembly and tightening. This is because steel pipes with different numbers of sections have different requirements in terms of total length and intermediate support, while traditional equipment is usually designed with fixed lengths or fixed configurations, making it difficult to simultaneously meet the assembly and tightening requirements of different product configurations without significant physical adjustments.

[0005] Secondly, existing assembly and tightening equipment lacks an adjustable elastic clamping device. Before splicing and tightening two sections of steel pipe, clamping the central component of the pipe is an essential step. However, most current clamping methods are rigid, requiring operators to clamp each component inside the pipe individually. This is susceptible to human error, easily leading to misoperation and affecting the quality and stability of the steel pipe assembly and tightening. Furthermore, it involves high labor intensity and low efficiency, failing to meet the demands for efficient and rapid steel pipe assembly.

[0006] Furthermore, the tightening structure at the tail end mostly uses a chuck device, which can interfere with the feeding process and may cause collisions between the robot and the chuck device, affecting the accuracy and safety of feeding.

[0007] Finally, most existing clamping mechanisms use a single hydraulic cylinder clamping method. With this setup, when clamping steel pipes, uneven force can easily cause the two sections of steel pipes to shift during the tightening process, affecting the tightening accuracy.

[0008] In view of this, the present invention is hereby proposed. Summary of the Invention

[0009] The purpose of this invention is to provide a steel pipe splicing and tightening device to solve the technical problem that existing steel pipe tightening devices lack efficiency and flexibility when handling steel pipe products with the same outer diameter but different numbers of sections. The various technical effects of the preferred solutions among the many technical solutions provided by this invention are detailed below.

[0010] To achieve the above objectives, the present invention provides the following technical solution:

[0011] This invention provides a steel pipe splicing and tightening device, comprising a base, a first-end tightening device, a second-end tightening device, a synchronous clamping device, a combined sliding device, and a combined translation device. The first-end tightening device, multiple combined sliding devices, and the second-end tightening device are sequentially slidably arranged on the base along the X-axis. Multiple synchronous clamping devices are arranged on the base along the X-axis. The combined translation device is arranged between two sets of combined sliding devices and has a supporting state and a clearance state. In the supporting state, the combined translation device is axially connected to the combined sliding device. In the clearance state, the combined translation device is moved away from the base to provide clearance space for the sliding of the first-end tightening device.

[0012] Preferably, the assembly and translation device includes an assembly and translation base, a translation slide, a follower platform, a first translation drive structure, a second translation drive structure, and a follower support structure. The translation slide is connected to the assembly and translation base via a guide structure. The first translation drive structure drives the translation slide to move along the Y-axis. The follower platform is connected to the translation slide via a guide structure. The second translation drive structure is disposed on the translation slide and is used to drive the follower platform to move along the X-axis. The follower support structure is disposed on the follower platform and is used to support the steel pipe.

[0013] Preferably, the assembly and translation device further includes a self-locking structure, which includes a self-locking cylinder and a self-locking block. The self-locking cylinder is disposed on the assembly and translation base and has a first inclined surface at its telescopic end. The self-locking block is disposed on the translation slide and has a second inclined surface. When the assembly and translation device is in a supported state, the first inclined surface abuts against the second inclined surface.

[0014] Preferably, the system further includes adjustable elastic clamping devices, with multiple adjustable elastic clamping devices respectively disposed at the joint positions of the two steel pipe sections on the base. Each adjustable elastic clamping device includes a clamping mechanism, a first clamping drive structure, and a second clamping drive structure. The clamping mechanism includes a baffle and a clamping plate, as well as a clamping spring disposed between the baffle and the clamping plate and an adjusting member for adjusting the compression degree of the clamping spring. The clamping plate is connected to the baffle through a guide structure. The first clamping drive structure drives the baffle to move along the Y-axis, and the second clamping drive structure drives the baffle to move along the X-axis, so that the clamping mechanism switches between a clamping working position and a splicing avoidance position.

[0015] Preferably, the base is provided with a linear guide rail extending along the X-axis direction. The first-end tightening device includes a first-end sliding mechanism and a first-end tightening mechanism. The first-end sliding mechanism includes a first-end slide table and a first-end driving structure. The first-end driving structure is disposed on the base and drives the first-end slide table to move along the linear guide rail. The first-end tightening mechanism is disposed on the first-end slide table and includes a chuck device, a first gear set, and a second first-end driving structure. The second first-end driving structure is connected to the chuck device through the first gear set and drives the chuck device to rotate. The chuck device is used to fix the steel pipe.

[0016] Preferably, the tail-end tightening device includes a tail-end sliding mechanism, a tail-end support mechanism, and a tail-end tightening mechanism. The tail-end sliding mechanism includes a tail-end slide table and a first tail-end driving structure. The tail-end slide table is slidably mounted on the linear guide rail, and the first tail-end driving structure is mounted on the base for driving the tail-end slide table to move along the linear guide rail. The tail-end support mechanism is used to support the tail section of the steel pipe. The tail-end tightening mechanism includes a second tail-end driving structure, a second gear set, a tail-end clamping structure, and a tail-end synchronization structure. The second gear set includes a second input gear, a second speed-regulating gear, and a split-type second output gear. The second output gear is composed of a first semi-circular gear and a second semi-circular gear; the second input gear is connected to the second tail-end drive structure and drives the second output gear to rotate through the second speed regulating gear; there are two sets of tail-end clamping structures, which are independently controlled and rotatably connected to the first semi-circular gear and the second semi-circular gear respectively; the tail-end synchronization structure includes a tail-end synchronization rack and a tail-end synchronization gear. There are two tail-end synchronization racks, which mesh with the tail-end synchronization gears respectively and are connected to the tail-end clamping structures respectively, so that the movement of the two sets of tail-end clamping structures remains synchronized.

[0017] Preferably, the tail-end tightening mechanism further includes a tail-end limiting structure, which includes a first limiting block, a limiting spring, a limiting push rod, a limiting member, and a second limiting block. The first limiting block is disposed on the tail-end clamping structure near the first semi-circular gear. The limiting push rod is movably connected to the first limiting block through the limiting spring. The second limiting block is disposed on another tail-end clamping structure. The second limiting block has an insertion groove for accommodating the limiting push rod. The limiting member is disposed on the limiting push rod. When the limiting push rod disengages from the insertion groove, the limiting member engages with the tooth groove of the first semi-circular gear.

[0018] Preferably, the synchronous clamping device includes a clamping base, a synchronous clamping structure, and a clamping synchronization structure. There are two sets of synchronous clamping structures, arranged opposite to each other and controlled independently. Each synchronous clamping structure is connected to the clamping base via a guide structure. The clamping synchronization structure includes a clamping synchronization rack and a clamping synchronization gear. There are two clamping synchronization racks, each meshing with a clamping synchronization gear and connected to a synchronous clamping structure, ensuring that the movements of the two sets of synchronous clamping structures remain synchronized.

[0019] Preferably, the assembly sliding device includes a sliding support frame and a sliding support mechanism symmetrically arranged on the sliding support frame, wherein the sliding support frame is slidably arranged on the linear guide rail; and the sliding support mechanism is used to support the steel pipe.

[0020] The preferred technical solution of the present invention can also produce at least the following technical effects:

[0021] This invention effectively solves the technical problem that existing steel pipe tightening equipment lacks efficiency and flexibility when processing steel pipe products with the same outer diameter but different numbers of sections.

[0022] This invention provides a steel pipe splicing and tightening device, including a base, a first-end tightening device, a second-end tightening device, a synchronous clamping device, a combined sliding device, and a combined translation device. The first-end tightening device, multiple combined sliding devices, and the second-end tightening device are sequentially slidably arranged on the base along the X-axis. Multiple synchronous clamping devices are sequentially arranged on the base along the X-axis. The combined translation device is arranged between two combined sliding devices and has a supporting state and a clearance state. In the supporting state, the combined translation device is axially connected to the combined sliding device to form a multi-segment independent supporting structure. In the clearance state, the combined translation device is moved away from the base to provide clearance space for the sliding of the first-end tightening device.

[0023] This invention features a head-end tightening device, multiple assembly sliding devices, and a tail-end tightening device slidably mounted on a base, allowing each device to be moved and adjusted on the base according to splicing requirements. Multiple synchronous clamping devices are sequentially installed on the base to effectively clamp and fix the steel pipe. The assembly translation device can switch between support and avoidance states according to the number of steel pipe sections, allowing for rapid equipment configuration changes without manual intervention, adapting to the processing needs of different numbers of steel pipe sections, and improving production efficiency and equipment flexibility. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a structural schematic diagram of a steel pipe splicing and tightening device provided by the present invention;

[0026] Figure 2 This is a schematic diagram of the assembly and translation device of a steel pipe splicing and tightening equipment provided by the present invention;

[0027] Figure 3 This is a schematic diagram of the adjustable elastic clamping device of a steel pipe splicing and tightening equipment provided by the present invention;

[0028] Figure 4 This is a schematic diagram of the structure of the first-end tightening device of a steel pipe splicing and tightening equipment provided by the present invention;

[0029] Figure 5 This is a schematic diagram of the tail end tightening device of a steel pipe splicing and tightening equipment provided by the present invention;

[0030] Figure 6 This is a structural schematic diagram from another perspective of the tail-end tightening device of the steel pipe splicing and tightening equipment provided by the present invention;

[0031] Figure 7 This is a schematic diagram of the tail end limiting structure of the tail end tightening device of the steel pipe splicing and tightening equipment provided by the present invention;

[0032] Figure 8 This is a schematic diagram of the synchronous clamping device of a steel pipe splicing and tightening equipment provided by the present invention;

[0033] Figure 9 This is a schematic diagram of the assembly sliding device of a steel pipe splicing and tightening equipment provided by the present invention.

[0034] In the picture:

[0035] 1. Base; 11. Linear guide rail; 12. Adjustable feet;

[0036] 2. Head-end tightening device; 21. Head-end slide table; 211. Head-end slider; 22. Chuck device; 23. First input gear; 24. First output gear; 25. First head-end drive structure; 26. Second head-end drive structure; 27. Torque sensor;

[0037] 3. Tail-end tightening device; 31. Tail-end slide; 3101. Tail-end slider; 32. First tail-end drive structure; 33. First tail-end support structure; 331. Tail-end support wheel; 332. Tail-end wheel frame; 333. First tail-end lead screw nut; 334. Second tail-end lead screw nut; 34. Second tail-end support structure; 341. Tail-end support plate; 342. Tail-end cylinder; 35. Second tail-end drive structure; 36. Second input gear; 37. Second speed regulating gear; 38. Second output gear; 381. First semi-circular gear; 382. Second semi-circular gear; 39. First tail-end clamping block; 310. Third tail-end drive structure; 311. Second tail-end clamping block; 312. Fourth tail-end drive structure; 313. First tail-end rack; 314. Second tail-end rack; 315. Tail-end synchronous gear; 316. First limiting block; 317. Limiting spring; 318. Limiting push rod; 319. Limiting component; 320. Second limiting block; 321. Tail-end slide; 322. Tail-end guide structure;

[0038] 4. Synchronous clamping device; 41. Clamping base; 42. First synchronous clamping block; 43. First synchronous drive structure; 44. Second synchronous clamping block; 45. Second synchronous drive structure; 46. Clamping synchronous gear; 47. First clamping rack; 48. Second clamping rack; 49. Synchronous guide structure;

[0039] 5. Assembled sliding device; 51. Sliding support frame; 511. Sliding slider; 52. First sliding drive structure; 53. Second sliding drive structure; 54. Sliding wheel frame; 55. Sliding support wheel;

[0040] 6. Assembled translation device; 61. Assembled translation base; 62. Translation slide; 63. Follower platform; 64. Follower support structure; 641. Follower screw nut; 642. Follower support wheel; 643. Follower wheel frame; 65. First translation guide structure; 66. Second translation guide structure; 67. Self-locking cylinder; 671. First inclined plane; 68. Self-locking block; 681. Second inclined plane;

[0041] 7. Adjustable elastic clamping device; 71. Clamping base; 72. Baffle; 73. Clamping plate; 74. Clamping spring; 75. Screw; 76. First clamping drive structure; 77. Second clamping drive structure; 78. Clamping slide; 79. Guide column; 710. Guide sleeve; 711. First clamping guide structure; 712. Second clamping guide structure; 713. Limiting plate. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0043] like Figures 1 to 9 As shown, this invention provides a steel pipe splicing and tightening device, including a base 1, a first-end tightening device 2, a last-end tightening device 3, a synchronous clamping device 4, a combined sliding device 5, and a combined translation device 6. The axial direction of the steel pipe is taken as the X-axis. The first-end tightening device 2, multiple combined sliding devices 5, and the last-end tightening device 3 are sequentially slidably arranged on the base 1 along the X-axis. Multiple synchronous clamping devices 4 are sequentially arranged on the base 1 along the X-axis. The combined translation device 6 is disposed between two combined sliding devices 5. The combined translation device 6 has a supporting state and a clearance state. In the supporting state, the combined translation device 6 is axially connected to the combined sliding device 5, forming a multi-segment independent supporting structure. In the clearance state, the combined translation device 6 is away from the base 1, providing clearance space for the sliding of the first-end tightening device 2.

[0044] Furthermore, such as Figure 1 As shown, there are two sets of assembly sliding devices 5, and the assembly translation device 6 is located between the assembly sliding devices 5. This allows the equipment to switch the state of the assembly translation device 6 according to the number of steel pipe sections, adapting to the processing requirements of three or four steel pipe sections. Specifically, as... Figure 1 As shown, when four sections of steel pipe need to be processed, the assembly and translation device 6 automatically extends to the support state and axially connects with the assembly and sliding devices 5 on both sides to form a multi-segment independent support structure. At this time, the middle section of steel pipe is supported by the assembly and translation device 6 and the assembly and sliding device 5 respectively, ensuring the axial straightness and stability of the steel pipe during the splicing process.

[0045] When three sections of steel pipe need to be processed, the assembly and translation device 6 automatically retracts to the avoidance state, away from the base 1, providing space for the sliding of the first-end tightening device 2. Without the need for manual adjustment of the equipment structure, it can quickly switch and adapt to different product configurations, thereby improving production efficiency.

[0046] The base 1 is equipped with multiple adjustable feet 12 and expansion bolts at its bottom for easy fixing to the ground.

[0047] As an optional implementation, such as Figure 1 , Figure 2As shown, the assembly and translation device 6 includes an assembly and translation base 61, a translation slide 62, a follower platform 63, a first translation drive structure, a second translation drive structure, and a follower support structure 64. The assembly and translation base 61 is disposed on one side of the base 1. The translation slide 62 is connected to the assembly and translation base 61 through a first translation guide structure 65. The first translation drive structure is disposed on the assembly and translation base 61 and is used to drive the translation slide 62 to move along the Y-axis. The follower platform 63 is connected to the translation slide 62 through a second guide structure. The second translation drive structure is disposed on the translation slide 62 and is used to drive the follower platform 63 to move along the X-axis. The follower support structure 64 includes two follower support wheels 642, forming a steel pipe support space between the two follower support wheels 642. The follower drive structure is used to drive the two follower support wheels 642 to move synchronously relative to each other or in opposite directions.

[0048] Furthermore, both the first and second translation drive structures include cylinders. The fixed end of the first translation drive structure is connected to the assembled translation base 61, and its telescopic end is connected to the translation slide 62. The fixed end of the second translation drive structure is connected to the translation slide 62, and its telescopic end is connected to the follower platform 63.

[0049] When processing four sections of steel pipe, the first translation drive structure extends, driving the translation slide 62 to move along the Y-axis to the steel pipe support position on the base 1 via the first translation guide structure 65. Then, the second translation drive structure drives the follower platform 63 to move along the X-axis via the second translation guide structure 66, adjusting the relative position of the follower support structure 64 and the steel pipe to be supported for better support. At this time, the assembly translation device 6 axially connects with the assembly sliding devices 5 on both sides, forming a multi-segment independent support structure, allowing the steel pipe in the middle section to be supported by both the assembly translation device 6 and the assembly sliding device 5.

[0050] When processing three sections of steel pipe, the first translation drive structure retracts, driving the translation slide 62 to move horizontally away from the base 1, disengaging from the base 1 and retracting to a clearance state, providing space for the sliding of the first-end tightening device 2. At this time, the first-end tightening device 2 can slide along the base 1 to a position close to the tail-end tightening device 3 to meet the requirements of splicing three sections of steel pipe.

[0051] There are two sets of follow-up support structures 64, which are arranged side by side on the follow-up platform 63. The follow-up drive structure includes a follow-up screw nut 641 and follow-up support wheels 642 connected to the nut slider of the follow-up screw nut 641 through a follow-up wheel frame 643. A handwheel is provided on the screw of the follow-up screw nut 641. Rotating the handwheel drives the screw of the follow-up screw nut 641 to rotate, which drives the two follow-up support wheels 642 to move synchronously relative to each other or in opposite directions through its nut slider, so as to adjust the steel pipe support space.

[0052] The first translational guide structure 65 and the second translational guide structure 66 employ a combination of guide rails and guide sliders as used in the prior art. The guide rail of the first translational guide structure 65 extends along the Y-axis direction, providing good guidance for the movement of the translational slide 62. The guide rail of the second translational guide structure 66 extends along the X-axis direction, providing good guidance for the movement of the follower platform 63.

[0053] As an optional implementation, such as Figure 1 , Figure 2 As shown, the assembly and translation device 6 also includes a self-locking structure, which comprises a self-locking cylinder 67 and a self-locking block 68. The self-locking cylinder 67 is mounted on the assembly and translation base 61, and its telescopic end has a first inclined surface 671. The self-locking block 68 is mounted on the translation slide 62 and has a second inclined surface 681. When the assembly and translation device 6 is in a supported state, the first inclined surface 671 abuts against the second inclined surface 681.

[0054] When the assembly translation device 6 is in the supported state, the piston rod of the self-locking cylinder 67 extends, and the first inclined surface 671 on the piston rod abuts tightly against the second inclined surface 681 on the self-locking block 68 to lock the position of the translation slide 62.

[0055] When the assembly translation device 6 needs to switch to the avoidance state, the self-locking cylinder 67 retracts, releasing the inclined plane constraint, and the translation slide 62 can move freely away from the base 1.

[0056] As an alternative implementation, due to the structural and material characteristics of the central component of the steel pipe, the pressure it bears during clamping must be controlled within a suitable range. Therefore, it is necessary to design an adjustable elastic clamping device 7 that can limit and adjust the clamping pressure.

[0057] like Figure 1 , Figure 3As shown, it also includes an adjustable elastic clamping device 7, which is correspondingly set at the position where the central component clamping operation needs to be performed. It is used to perform secondary clamping and positioning of the central component of the steel pipe before the steel pipe butt joint tightening operation. Multiple adjustable elastic clamping devices 7 are respectively set at the butt joint position of two steel pipe sections on the base 1. Each adjustable elastic clamping device 7 includes a clamping base 71, a clamping slide 78, a clamping mechanism, a first clamping drive structure 76, and a second clamping drive structure 77. The clamping mechanism includes a baffle 72 and a clamping plate 73, as well as a clamping spring 74 disposed between the baffle 72 and the clamping plate 73, and an adjusting component for adjusting the compression degree of the clamping spring 74. The clamping plate 73 is connected to the baffle 72 through a third clamping guide structure. The first clamping drive structure 76 drives the baffle 72 to move along the Y-axis direction. The first clamping drive structure 76 and the baffle 72 are mounted on the clamping slide 78. The second clamping drive structure 77 drives the clamping slide 78 to move the baffle 72 along the X-axis, so that the clamping mechanism switches between the clamping working position and the splicing avoidance position. The baffle 72 is connected to the clamping slide 78 through the first clamping guide structure 711, and the clamping slide 78 is connected to the clamping base 71 through the second clamping guide structure 712. The clamping base 71 is provided with a limiting plate 713 to restrict the movement range of the clamping slide 78.

[0058] Furthermore, the adjusting component includes a screw 75, which passes through a baffle 72 and is screwed to a pressure plate 73. One end of a pressure spring 74 is connected to the pressure plate 73, and the other end is connected to the screw 75. By adjusting the relative position of the screw 75 and the pressure plate 73, the compression of the pressure spring 74 is changed, thereby adjusting the pressure exerted by the pressure plate 73 on the central component of the steel pipe.

[0059] The third clamping and guiding structure includes a guide post 79 disposed on the clamping plate 73 and a guide sleeve 710 disposed on the baffle 72. The guide post 79 and the guide sleeve 710 are slidably engaged to provide guidance for the movement of the clamping plate 73. Through the buffer clamping form of the guide post 79, the guide sleeve 710, the clamping spring 74 and the screw 75, an adjustable flexible clamping force is achieved.

[0060] A limit plate 713 is provided on the clamping base 71 to limit the movement range of the clamping slide 78.

[0061] The first pressing drive structure 76 and the second pressing drive structure 77 are cylinders.

[0062] The first clamping drive structure 76 and the second clamping drive structure 77 work together to switch the clamping mechanism between the clamping working position and the splicing avoidance position. Specifically, when clamping is not required or when steel pipe splicing is being performed, the second clamping drive structure 77 drives the clamping slide 78 to move along the X-axis, while the first clamping drive structure 76 drives the baffle 72 to move along the Y-axis, moving the clamping mechanism away from the steel pipe splicing area.

[0063] When the central component of the steel pipe needs to be clamped, the first clamping drive structure 76 drives the baffle 72 to move along the Y-axis, and the second clamping drive structure 77 drives the clamping slide 78 to move in the opposite direction along the X-axis, so that the clamping mechanism is close to the steel pipe. At the same time, the clamping mechanism is accurately moved to the clamping position, so that the clamping plate 73 can perform the clamping operation on the central component of the steel pipe.

[0064] After the clamping operation is completed, the second clamping drive structure 77 retracts, moving the clamping slide 78 and the clamping mechanism away from the steel pipe. During this process, the retraction of the second clamping drive structure 77 generates a certain pulling force. Due to the presence of the limiting plate 713, the clamping slide 78 is restricted from further movement. At this time, part of the pulling force generated by the second clamping drive structure 77 is blocked by the limiting plate 713, so that the clamping mechanism relies solely on the compression of the clamping spring 74 to provide smooth and gentle pressure.

[0065] The first pressing guide structure 711 and the second pressing guide structure 712 employ a combination of guide rails and guide sliders as used in the prior art. The guide rail of the first pressing guide structure 711 extends along the Y-axis direction, providing good guidance for the movement of the baffle 72. The guide rail of the second pressing guide structure 712 extends along the X-axis direction, providing good guidance for the movement of the pressing slide 78.

[0066] As an optional implementation, such as Figure 1 , Figure 4 As shown, a linear guide rail 11 extending along the X-axis is provided on the base 1. The head-end tightening device 2 includes a head-end sliding mechanism and a head-end tightening mechanism. The head-end sliding mechanism includes a head-end slide table 21 and a first head-end drive structure 25. A head-end slider 211 that slides and engages with the linear guide rail 11 is provided at the bottom of the head-end slide table 21. The first head-end drive structure 25 is provided on the base 1 and is used to drive the head-end slide table 21 to move along the linear guide rail 11. The head-end tightening mechanism is provided on the head-end slide table 21 and includes a chuck device 22, a first gear set, and a second head-end drive structure 26. The second head-end drive structure 26 is connected to the chuck device 22 through the first gear set and drives the chuck device 22 to rotate. The chuck device 22 is used to clamp and fix the steel pipe.

[0067] Furthermore, the first end drive structure 25 adopts a hydraulic cylinder to drive the end slide 21 to move along the linear guide rail 11 in the X-axis direction, so that the end tightening device 2 switches between the tightening position and the avoidance position.

[0068] The first gear set includes a first input gear 23 and a first output gear 24. The second head-end drive structure 26 adopts a hydraulic motor. The first input gear 23 is connected to the output shaft of the second head-end drive structure 26. The first output gear 24 is sleeved on the chuck device 22 and meshes with the first input gear 23.

[0069] When the second head end drive structure 26 drives the first input gear 23 to rotate, the first output gear 24 will rotate due to the meshing of the first input gear 23 and the first output gear 24, thereby driving the chuck device 22 to rotate; at the same time, the first head end drive structure 25 drives the head end slide 21 to move forward slowly, thereby realizing the tightening operation of the steel pipe.

[0070] The chuck device 22 is a hydraulic chuck device 22 that can switch between forward and reverse rotation, which is a technology in the prior art. The clamping end of the chuck device 22 is provided with an anti-static rubber part.

[0071] It also includes a torque sensor 27. A coupling is provided between the second head drive structure 26 and the first input gear 23. The torque sensor 27 is mounted on the coupling and is used to monitor the tightening torque.

[0072] As an optional implementation, such as Figure 1 , Figure 5 , Figure 6 , Figure 7As shown, the tail-end tightening device 3 includes a tail-end sliding mechanism, a tail-end support mechanism, and a tail-end tightening mechanism. The tail-end sliding mechanism includes a tail-end slide 31 and a first tail-end drive structure 32. A tail-end slider 3101 with a linear guide rail 11 is provided on the tail-end slide 31. The first tail-end drive structure 32 is provided on the base 1 and is used to drive the tail-end slide 31 to move along the linear guide rail 11. The tail-end support mechanism is used to support the tail section of the steel pipe. The tail-end tightening mechanism includes a second tail-end drive structure 35, a second gear set, a tail-end clamping structure, and a tail-end synchronization structure. The second gear set includes a second input gear 36, a second speed regulating gear 37, and a split second output gear 38. The second output gear 38 is composed of a first semi-circular gear 381 and a second semi-circular gear 382. The second input gear 36 is connected to the second tail-end drive structure 35 and drives the second output gear 38 to rotate through the second speed regulating gear 37. The first semi-circular gear 381 and the second semi-circular gear 382 combine to form the second output gear 38, and a clamping space is formed between them that matches the directional knob seat of the tail-end steel tube, used for clamping the directional knob seat during rotation. There are two sets of tail-end clamping structures, each independently controlled and rotatably connected to the first semi-circular gear 381 and the second semi-circular gear 382 respectively. The tail-end synchronization structure includes a tail-end synchronization rack and a tail-end synchronization gear 315. There are two tail-end synchronization racks, each connected to the tail-end clamping structure and meshing with the tail-end synchronization gear 315, ensuring that the movements of the two sets of tail-end clamping structures remain synchronized.

[0073] Furthermore, the first tail end drive structure 32 drives the tail end slide 31 to move along the linear guide rail 11 in the X-axis direction, so that the tail end tightening device 3 switches between the tightening position and the avoidance position.

[0074] The tail end support mechanism includes a first tail end support structure 33 and a second tail end support structure 34 respectively disposed at both ends of the tail end tightening mechanism. During the feeding stage, the first tail end support structure 33 and the second tail end support structure 34 provide stable support from both ends of the tail end steel pipe to facilitate the subsequent clamping and tightening operation of the tail end tightening mechanism.

[0075] The first tail-end support structure 33 includes a tail-end support wheel 331, a first tail-end lead screw nut 333, and a second tail-end lead screw nut 334. There are two tail-end support wheels 331, forming a steel pipe support space between them. The tail-end support wheels 331 are connected to the nut sliders of the first tail-end lead screw nut 333 via tail-end wheel frames 332. Manually driving the lead screw of the first tail-end lead screw nut 333 to rotate causes the two tail-end support wheels 331 to move synchronously relative to or away from each other, adjusting the steel pipe support space. The nut slider of the second tail-end lead screw nut 334 is connected to the first tail-end lead screw nut 333 via a connector. Manually driving the lead screw of the second tail-end lead screw nut 334 to rotate causes the first tail-end lead screw nut 333 to move along the Y-axis.

[0076] The second tail end support structure 34 includes two tail end support plates 341 arranged opposite to each other and a tail end cylinder 342 that drives the tail end support plates 341 to move along the Z-axis. The support surfaces of the two tail end support plates 341 are arc surfaces that are adapted to the outer wall surface of the steel pipe.

[0077] One tail-end clamping structure includes a first tail-end clamping block 39 and a third tail-end driving structure 310 that drives the first tail-end clamping block 39 to move along the Y-axis. The other tail-end clamping structure includes a second tail-end clamping block 311 and a fourth tail-end driving structure 312 that drives the second tail-end clamping block 311 to move along the Y-axis. The first tail-end clamping block 39 and the second tail-end clamping block 311 are arranged opposite to each other, and their opposing surfaces are arc-shaped. They are respectively connected to a first semi-circular gear 381 and a second semi-circular gear 382 via bearings. The bearings are located on the opposing surfaces of the first tail-end clamping block 39 and the second tail-end clamping block 311.

[0078] The third tail-end drive structure 310 and the fourth tail-end drive structure 312 respectively drive the first semi-circular gear 381 and the second semi-circular gear 382 to move synchronously relative to each other, so that the first semi-circular gear 381 and the second semi-circular gear 382 combine to form a complete second output gear 38, and at the same time form a clamping space adapted to the directional knob seat of the tail-end steel tube. When the second tail-end drive structure 35 drives the second output gear 38 to rotate relative to the first tail-end clamping block 39 and the second tail-end clamping block 311, it drives the tail-end steel tube to rotate synchronously.

[0079] It also includes a tail end slide 321, which is connected to the tail end slide 31 via a tail end guide structure 322. A second tail end drive structure 35 and a second tail end clamping block 311 are mounted on the tail end slide 321. The tail end guide structure 322 employs a combination of a guide rail and a guide slider, as is common in the art. The guide rail of the tail end guide structure 322 extends along the Y-axis, providing good guidance for the movement of the tail end slide 321.

[0080] The tail end synchronous rack includes a first tail end rack 313 and a second tail end rack 314 that are parallel to each other. The first tail end rack 313 is connected to the first tail end clamping block 39, and the second tail end rack 314 is connected to the tail end slide 321.

[0081] During the loading stage, the third tail-end drive structure 310 and the fourth tail-end drive structure 312 drive the first semi-circular gear 381 and the second semi-circular gear 382 to move synchronously in opposite directions to an obstacle-avoiding loading position, facilitating the gantry robot to grasp the tail-end steel pipe for loading, and placing the tail end of the steel pipe on the first tail-end support structure 33 and the second tail-end support structure 34. After the gantry robot withdraws, the third tail-end drive structure 310 and the fourth tail-end drive structure 312 drive the first semi-circular gear 381 and the second semi-circular gear 382 to move synchronously relative to each other, causing the inner rings of the first semi-circular gear 381 and the second semi-circular gear 382 to clamp the directional knob of the tail-end steel pipe at corresponding positions, providing a reaction force for tightening.

[0082] The second tail end drive structure 35 drives the second input gear 36 to rotate. The second input gear 36 transmits power to the second output gear 38 through the second speed regulating gear 37. Since the first semi-circular gear 381 and the second semi-circular gear 382 have clamped the directional knob seat at the tail end of the steel pipe, the tail end steel pipe is driven to rotate. At the same time, the first tail end drive structure 32 drives the tail end slide 31 to move forward slowly, thereby realizing the tightening operation of the steel pipe.

[0083] During the synchronous operation of the third tail end drive structure 310 and the fourth tail end drive structure 312, the tail end synchronous rack and tail end synchronous gear 315 cooperate with each other to ensure the high synchronicity of the movement of the first tail end clamping block 39 and the second tail end clamping block 311, so that the first semi-circular gear 381 and the second semi-circular gear 382 can move relative to each other accurately and smoothly.

[0084] During the synchronous extension of the third tail-end drive structure 310 and the fourth tail-end drive structure 312, there are two different stroke stages. The majority of the stroke is the idle stroke stage. During this stage, the first semi-circular gear 381 and the second semi-circular gear 382 have not yet contacted the steel pipe. Therefore, the design of the tail-end synchronous rack and tail-end synchronous gear 315 does not require high-strength, high-specification components; it only needs to meet basic transmission and synchronization requirements. When the first semi-circular gear 381 and the second semi-circular gear 382 move to contact the steel pipe, they enter the subsequent clamping stroke stage. At this time, their extension amount is extremely small, approximately equal to the deformation of the steel pipe during clamping. Because this extension amount is very small, the resulting force is relatively limited and will not damage the tail-end synchronous rack and tail-end synchronous gear 315.

[0085] The first tail-end drive structure 32 uses a hydraulic cylinder. The second tail-end drive structure 35 uses a hydraulic motor that can switch between forward and reverse rotation. The third tail-end drive structure 310 and the fourth tail-end drive structure 312 use hydraulic cylinders.

[0086] As an optional implementation, such as Figure 7 As shown, the tail-end tightening mechanism also includes a tail-end limiting structure, which includes a first limiting block 316, a limiting spring 317, a limiting push rod 318, a limiting member 319, and a second limiting block 320. The first limiting block 316 is disposed on the first tail-end clamping block 39. The limiting push rod 318 is movably connected to the first limiting block 316 through the limiting spring 317. The second limiting block 320 is disposed on the second tail-end clamping block 311. The second limiting block 320 has an insertion groove for accommodating the limiting push rod 318. The limiting member 319 is disposed on the limiting push rod 318. When the limiting push rod 318 disengages from the insertion groove, the limiting member 319 engages with the tooth groove of the first semi-circular gear 381.

[0087] Furthermore, the limiting element 319 is a wedge-shaped block.

[0088] When the first semi-circular gear 381 and the second semi-circular gear 382 move in opposite directions, the limiting push rod 318 disengages from the insertion slot, the limiting spring 317 resets, and pushes the limiting push rod 318, along with the limiting member 319, towards the second limiting block 320. The limiting member 319 then engages with the tooth groove of the first semi-circular gear 381, thus fixing the first semi-circular gear 381 in place. At this time, the second semi-circular gear 382 is fixed by the second tail end drive structure 35, keeping its position stationary.

[0089] When the first semi-circular gear 381 and the second semi-circular gear 382 are fully engaged, the limiting push rod 318 is inserted into the insertion slot of the second limiting block 320, compressing the limiting spring 317. The limiting push rod 318 moves the limiting member 319 away from the second limiting block 320, and the limiting member 319 separates from the tooth groove of the first semi-circular gear 381, releasing the limitation on the first semi-circular gear 381. The first semi-circular gear 381 and the second semi-circular gear 382 can rotate under the drive of the second tail end drive structure 35 to perform the tightening operation.

[0090] As an optional implementation, such as Figure 1 , Figure 8As shown, the synchronous clamping device 4 is positioned at the location where the steel pipe needs to be clamped. It includes a clamping base 41, a synchronous clamping structure, and a clamping synchronization structure. There are two sets of synchronous clamping structures, arranged opposite each other and controlled independently. Each synchronous clamping structure is connected to the clamping base 41 via a guide structure. The clamping synchronization structure includes two clamping synchronization racks and two clamping synchronization gears 46. The racks are connected to the synchronous clamping structures and mesh with the clamping synchronization gears 46, ensuring synchronized movement of the two sets of clamping structures.

[0091] Furthermore, one synchronous clamping structure includes a first synchronous clamping block 42 and a first synchronous drive structure 43 for driving the first synchronous clamping block 42 to move along the Y-axis direction, and the other synchronous clamping structure includes a second synchronous clamping block 44 and a second synchronous drive structure 45 for driving the second synchronous clamping block 44 to move along the Y-axis direction. The first synchronous clamping block 42 and the second synchronous clamping block 44 are arranged opposite to each other, and their opposite surfaces are arc surfaces and are provided with anti-static rubber parts, forming a positioning space for clamping the steel pipe between them. The first synchronous drive structure 43 and the second synchronous drive structure 45 are hydraulic cylinders.

[0092] The clamping synchronization rack includes a first clamping rack 47 connected to the first synchronization clamping block 42 and a second clamping rack 48 connected to the second synchronization clamping block 44.

[0093] When the first synchronous drive structure 43 and the second synchronous drive structure 45 move synchronously, the first synchronous drive structure 43 drives the first synchronous clamping block 42 to move, and the first clamping rack 47 moves accordingly. Since the first clamping rack 47 meshes with the clamping synchronous gear 46, the clamping synchronous gear 46 rotates under the drive of the first clamping rack 47, thereby causing the second synchronous clamping block 44 to move accordingly. At the same time, the second synchronous drive structure 45 drives the second synchronous clamping block 44 to move, and the second clamping rack 48 moves accordingly, which in turn drives the first clamping rack 47 to move through the clamping synchronous gear 46. In this way, when the first synchronous drive structure 43 and the second synchronous drive structure 45 are driven synchronously, the two sets of synchronous clamping structures achieve synchronous movement through the clamping synchronous structure, so that the first synchronous clamping block 42 and the second synchronous clamping block 44 can clamp the outer wall of the steel pipe from both sides simultaneously, providing a stable reaction force for the tightening operation.

[0094] During the synchronous operation of the first synchronous drive structure 43 and the second synchronous drive structure 45, the clamping synchronous rack and clamping synchronous gear 46 cooperate to ensure a high degree of synchronism in the movement of the first synchronous clamping block 42 and the second synchronous clamping block 44, allowing them to move accurately and smoothly relative to each other. During the synchronous extension of the first synchronous drive structure 43 and the second synchronous drive structure 45, there are two different stroke stages. The majority of the stroke is the idle stroke stage, during which the first synchronous clamping block 42 and the second synchronous clamping block 44 have not yet contacted the steel pipe. Therefore, the design of the clamping synchronous rack and clamping synchronous gear 46 does not require high-strength, high-specification components; it only needs to meet basic transmission and synchronization requirements. When the first synchronous clamping block 42 and the second synchronous clamping block 44 move to contact the steel pipe, they enter the subsequent clamping stroke stage. At this time, their extension amount is extremely small, approximately equal to the deformation of the steel pipe during clamping. Because this extension amount is very small, the resulting force is relatively limited and will not damage the clamping synchronous rack and clamping synchronous gear 46.

[0095] The first synchronous clamping block 42 and the second synchronous clamping block 44 are respectively connected to the clamping base 41 via a synchronous guide structure 49. The synchronous guide structure 49 adopts a combination of guide rail and guide slider in the prior art. The guide rail of the synchronous guide structure 49 extends along the Y-axis direction, providing good guidance for the movement of the first synchronous clamping block 42 and the second synchronous clamping block 44.

[0096] As an optional implementation, such as Figure 1 , Figure 9 As shown, the assembled sliding device 5 includes a sliding support frame 51 and sliding support mechanisms symmetrically arranged on the sliding support frame 51. A sliding slider 511 is provided on the sliding support frame 51 to slide in cooperation with the linear guide rail 11. The sliding support mechanism includes a first sliding drive structure 52, a second sliding drive structure 53, and two sliding support wheels 55, forming a steel pipe support space between them. The first sliding drive structure 52 drives the two sliding support wheels 55 to move synchronously relative to each other or in opposite directions. The second sliding drive structure 53 drives the first sliding drive structure 52 to move along the Y-axis.

[0097] The first sliding drive structure 52 and the second sliding drive structure 53 adopt manually driven lead screw nuts.

[0098] The sliding support wheel 55 is connected to the nut slider of the first sliding drive structure 52 through the sliding wheel frame 54. The screw of the first sliding drive structure 52 is manually driven to rotate, and the nut slider drives the two sliding support wheels 55 to move synchronously relative to each other or in opposite directions to adjust the steel pipe support space.

[0099] The nut slider of the second sliding drive structure 53 is connected to the first sliding drive structure 52 through a connector. The screw of the second sliding drive structure 53 is manually driven to rotate, which in turn drives the first sliding drive structure 52 to move along the Y-axis.

[0100] When the first slide 21 or the last slide 31 slides along the linear guide rail 11, it can push the adjacent assembly sliding device 5 to follow up, so as to better carry out splicing and tightening operations.

[0101] It also includes the component to be tested and a proximity switch. The component to be tested can be set on any moving structure of the first-end tightening device 2, the last-end tightening device 3, the synchronous clamping device 4, the assembly sliding device 5, the assembly translation device 6, and the adjustable elastic pressing device 7, according to the usage requirements. The proximity switch is set on the corresponding moving path of the moving structure to detect the movement state of the moving structure.

[0102] It should be noted that the number of synchronous clamping device 4, combined sliding device 5, combined translation device 6, and adjustable elastic clamping device 7 is not limited to the schemes listed in this embodiment. The specific number of the aforementioned devices can be reasonably configured and adjusted according to the number of steel pipe sections to better adapt to diverse production needs.

[0103] It is understood that the same or similar parts in the above embodiments can be referred to each other, and the contents not described in detail in some embodiments can be referred to the same or similar contents in other embodiments.

[0104] In the description of this invention, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., 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 the invention 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 the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0105] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0106] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "a particular example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0107] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A steel pipe splicing and tightening device, characterized in that, The assembly includes a base, a head tightening device, a tail tightening device, a synchronous clamping device, a merging sliding device, and a merging translation device. The head tightening device, multiple merging sliding devices, and the tail tightening device are sequentially slidably mounted on the base along the X-axis. Multiple synchronous clamping devices are also mounted on the base along the X-axis. The merging translation device is positioned between two sets of merging sliding devices and has a supporting state and a clearance state. In the supporting state, the merging translation device is axially aligned with the merging sliding devices; in the clearance state, the merging translation device is moved away from the base. This provides clearance for the sliding of the tightening device at the first end; the assembly translation device includes an assembly translation base, a translation slide, a follower platform, a first translation drive structure, a second translation drive structure, and a follower support structure. The translation slide is connected to the assembly translation base via a guide structure, and the first translation drive structure drives the translation slide to move along the Y-axis. The follower platform is connected to the translation slide via a guide structure, and the second translation drive structure is disposed on the translation slide to drive the follower platform to move along the X-axis. The follower support structure is disposed on the follower platform to support the steel pipe. The assembly and translation device also includes a self-locking structure, which includes a self-locking cylinder and a self-locking block. The self-locking cylinder is mounted on the assembly and translation base and has a first inclined surface at its telescopic end. The self-locking block is mounted on the translation slide and has a second inclined surface. When the assembly and translation device is in a supported state, the first inclined surface abuts against the second inclined surface. It also includes adjustable elastic clamping devices to clamp the central component of the steel pipe. Multiple adjustable elastic clamping devices are respectively installed at the joint position of two steel pipe sections on the base. Each adjustable elastic clamping device includes a clamping mechanism, a first clamping drive structure, and a second clamping drive structure. The clamping mechanism includes a baffle and a clamping plate, as well as a clamping spring disposed between the baffle and the clamping plate and an adjusting component for adjusting the compression degree of the clamping spring. The clamping plate is connected to the baffle via a guide structure. The first clamping drive structure drives the baffle to move along the Y-axis, and the second clamping drive structure drives the baffle to move along the X-axis, so that the clamping mechanism switches between a clamping working position and a splicing avoidance position.

2. The steel pipe splicing and tightening equipment according to claim 1, characterized in that, The base is provided with a linear guide rail extending along the X-axis. The first-end tightening device includes a first-end sliding mechanism and a first-end tightening mechanism. The first-end sliding mechanism includes a first-end slide table and a first-end driving structure. The first-end driving structure is disposed on the base and drives the first-end slide table to move along the linear guide rail. The first-end tightening mechanism is disposed on the first-end slide table and includes a chuck device, a first gear set, and a second first-end driving structure. The second first-end driving structure is connected to the chuck device through the first gear set and drives the chuck device to rotate. The chuck device is used to fix the steel pipe.

3. The steel pipe splicing and tightening equipment according to claim 2, characterized in that, The tail-end tightening device includes a tail-end sliding mechanism, a tail-end support mechanism, and a tail-end tightening mechanism. The tail-end sliding mechanism includes a tail-end slide table and a first tail-end driving structure. The tail-end slide table is slidably mounted on the linear guide rail, and the first tail-end driving structure is mounted on the base for driving the tail-end slide table to move along the linear guide rail. The tail-end support mechanism is used to support the tail section of the steel pipe. The tail-end tightening mechanism includes a second tail-end driving structure, a second gear set, a tail-end clamping structure, and a tail-end synchronization structure. The second gear set includes a second input gear, a second speed-regulating gear, and a split-type second output gear. The second output gear is composed of a first semi-circular gear and a second semi-circular gear. The second input gear is connected to the second tail-end driving structure and drives the second output gear to rotate through the second speed-regulating gear. The tail-end clamping structure consists of two sets, each independently controlled and rotatably connected to the first and second semi-circular gears respectively. The tail-end synchronization structure includes a tail-end synchronization rack and a tail-end synchronization gear. The tail-end synchronization rack consists of two racks, each meshing with the tail-end synchronization gear and connected to the tail-end clamping structure, so that the movement of the two sets of tail-end clamping structures remains synchronized.

4. The steel pipe splicing and tightening equipment according to claim 3, characterized in that, The tail-end tightening mechanism further includes a tail-end limiting structure, which includes a first limiting block, a limiting spring, a limiting push rod, a limiting member, and a second limiting block. The first limiting block is disposed on the tail-end clamping structure near the first semi-circular gear. The limiting push rod is movably connected to the first limiting block through the limiting spring. The second limiting block is disposed on another tail-end clamping structure. The second limiting block has an insertion slot for accommodating the limiting push rod. The limiting member is disposed on the limiting push rod. When the limiting push rod disengages from the insertion slot, the limiting member engages with the tooth groove of the first semi-circular gear.

5. The steel pipe splicing and tightening equipment according to claim 1, characterized in that, The synchronous clamping device includes a clamping base, a synchronous clamping structure, and a clamping synchronization structure. There are two sets of synchronous clamping structures, arranged opposite to each other and controlled independently. Each synchronous clamping structure is connected to the clamping base via a guide structure. The clamping synchronization structure includes a clamping synchronization rack and a clamping synchronization gear. There are two clamping synchronization racks, each meshing with a clamping synchronization gear and connected to a synchronous clamping structure, ensuring that the movements of the two sets of synchronous clamping structures remain synchronized.

6. The steel pipe splicing and tightening equipment according to claim 2, characterized in that, The assembly sliding device includes a sliding support frame and a sliding support mechanism symmetrically arranged on the sliding support frame. The sliding support frame is slidably arranged on the linear guide rail. The sliding support mechanism is used to support the steel pipe.

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