High-efficiency group pairing device and high-efficiency group pairing method

Abstract

The application provides a high-efficiency assembling device and a high-efficiency assembling method. The high-efficiency assembling device comprises a guide rail, a front roller frame arranged on the guide rail and used for supporting and transporting a second cylinder section along the guide rail, wherein the front roller frame comprises a front clamping structure used for clamping a front end surface of the second cylinder section; a rear roller frame arranged on the guide rail and used for supporting and transporting a first cylinder section along the guide rail, wherein the rear roller frame comprises a rear clamping structure used for clamping a rear end surface of the first cylinder section; and an assembling roller frame arranged between the front roller frame and the rear roller frame and used for lifting and adjusting the misalignment amount of the first cylinder section and the second cylinder section. The application improves the assembling efficiency and assembling precision of the cylinder sections and saves the production cost.

Description

Technical Field

[0001] This application relates to the field of industrial equipment technology, and more specifically, to an efficient pairing device and an efficient pairing method. Background Technology

[0002] With the rapid development of the industrial manufacturing sector, assembly equipment has been widely used in the welding process of large workpieces such as pressure vessels and pipelines.

[0003] When assembling the cylindrical sections of a pressure vessel into a long cylindrical body, the sections need to be welded together. Assembly is a preliminary step before welding, which involves fixing the relative positions of the sections using spot welding. Currently, assembly devices on the market are highly dependent on worker experience, complex to operate, inefficient, and lack precision in terms of misalignment and gaps, failing to meet the high-precision assembly requirements under complex working conditions. Summary of the Invention

[0004] This application provides a high-efficiency assembly device that improves the assembly efficiency and accuracy of cylinder sections and saves production costs.

[0005] This application provides a high-efficiency assembly device, comprising: a guide rail; a front roller frame disposed on the guide rail, the front roller frame being used to support and transport a second cylinder section along the guide rail, the front roller frame including a front clamping structure for clamping the front end face of the second cylinder section; a rear roller frame disposed on the guide rail, the rear roller frame being used to support and transport a first cylinder section along the guide rail, the rear roller frame including a rear clamping structure for clamping the rear end face of the first cylinder section; and an assembly roller frame disposed between the front roller frame and the rear roller frame for lifting and adjusting the misalignment of the first cylinder section and the second cylinder section.

[0006] In some embodiments, the front roller frame further includes a front roller frame body, which includes a front frame base, front frame traveling wheels, a front frame bracket, and front frame rollers. The front frame traveling wheels are disposed at the bottom of the front frame base, and the front frame bracket connects the front frame base and the front frame rollers. The front frame rollers are used to support the second cylinder section. The front clamping structure includes a front frame connecting rod, a front frame pivot, a front frame driver, and a front frame clamp. The front frame connecting rod connects the front frame base and the front frame clamp through the front frame pivot. The front frame driver drives the front frame clamp to clamp the front end face of the second cylinder section.

[0007] In some embodiments, the rear roller frame further includes a rear roller frame body, which includes a rear frame base, a rear frame traveling wheel, a rear frame bracket, and a rear frame roller. The rear frame traveling wheel is disposed at the bottom of the rear frame base, and the rear frame bracket connects the rear frame base and the rear frame roller. The rear frame roller is used to support the first cylinder section. The rear clamping structure includes a rear frame connecting rod, a rear frame rotating shaft, a rear frame driver, and a rear frame clamp. The rear frame connecting rod connects the rear frame base and the rear frame clamp through the rear frame rotating shaft. The rear frame driver drives the rear frame clamp to clamp the rear end face of the first cylinder section.

[0008] In some embodiments, the system further includes two support arms, which are symmetrically distributed on both sides of the first cylindrical section or on both sides of the second cylindrical section. Each support arm includes a support base, a support connection structure, a support link, and a support rod. The support link is rotatably connected to the support connection structure, and the support rod is rotatably connected to the support link.

[0009] In some embodiments, the end of the support rod opposite to the support link is provided with a fork arm structure, and the fork arm structure is rotatably provided with two rollers.

[0010] In some embodiments, a pressure bar is further included, which is used to apply downward pressure to the assembled cylinder sections to adjust the misalignment between the first cylinder section and the second cylinder section; the pressure bar includes a pressure bar base with a pressure bar wheel, a pressure bar connecting rod and a lower pressure member, and the pressure bar connecting rod is fixedly connected to the pressure bar base and the lower pressure member.

[0011] In some embodiments, the pressure bar further includes a hydraulic actuator connected to the pressure bar link and driving the lower pressure member.

[0012] In some embodiments, a conveyor roller frame is further included, which is disposed between the pair roller frame and the rear roller frame to support and convey the first cylinder section.

[0013] In some embodiments, the pairing roller frame includes a pairing base with pairing wheels, four pairing supports and four pairing rollers, and the pairing roller frame also includes a power unit and two lifting rods that drive the power unit.

[0014] This application also provides an efficient assembly method applied to the aforementioned efficient assembly device, comprising: Step 1, hoisting the second cylinder section and the first cylinder section onto the front roller frame and the rear roller frame respectively, with the assembly roller frame simultaneously supporting the second cylinder section and the first cylinder section; Step 2, moving the front roller frame towards the second cylinder section to the first assembly point; Step 3, moving the front roller frame and the assembly roller frame to coarsely adjust the gap between the second cylinder section and the first cylinder section, and then finely adjusting the gap through the front clamping structure and the rear clamping structure; Step 4, adjusting the misalignment between the second cylinder section and the first cylinder section through the assembly roller frame; Step 5, performing spot welding; Step 6, rotating the cylinder section to the next assembly point, repeating steps 3 to 5; Step 7, after completing the assembly of the current cylinder section, moving the conveyor roller frame and the rear roller frame to move the first cylinder section to the right, making space for the assembly of the next cylinder section.

[0015] In this embodiment, the distance between two cylindrical sections is quickly adjusted by using guide rails, replacing the traditional method of repeated hoisting and positioning by a crane. The end faces of the cylindrical sections are clamped and positioned by front and rear clamping structures, achieving micro-precision adjustment and locking of the gap. This quickly eliminates gaps and misalignments at the ends of the cylindrical sections, improves assembly quality, significantly enhances the overall efficiency of assembly operations, improves the overall welding quality of pressure vessels, pipelines, etc., and reduces the defect rate. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application 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 embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0017] Figure 1 A front view of an efficient pairing device provided in some embodiments of this application;

[0018] Figure 2 A top view of an efficient pairing device provided in some embodiments of this application;

[0019] Figure 3 A side view from one angle of the efficient pairing device provided in some embodiments of this application;

[0020] Figure 4 A side view from another angle of the efficient pairing device provided in some embodiments of this application;

[0021] Figure 5 A schematic diagram of the front roller frame in a high-efficiency assembly device provided for other embodiments of this application;

[0022] Figure 6A schematic diagram of the rear roller frame in a high-efficiency assembly device provided for other embodiments of this application;

[0023] Figure 7 A schematic diagram of the assembly roller frame in a high-efficiency assembly device provided in some other embodiments of this application;

[0024] Figure 8 A front view of the assembly roller frame in the high-efficiency assembly apparatus provided in some embodiments of this application;

[0025] Figure 9 A top view of the assembly roller frame in an efficient assembly apparatus provided in some embodiments of this application;

[0026] Figure 10 A schematic diagram of a support arm in an efficient assembly device provided in some embodiments of this application;

[0027] Figure 11 This is a schematic diagram of a pressure bar in a high-efficiency assembly device provided for other embodiments of this application.

[0028] The attached figures are labeled as follows:

[0029] 1-First cylinder section; 2-Second cylinder section; 3-Guide rail; 4-Front roller frame; 5-Rear roller frame; 6-Assembly roller frame; 7-Support arm; 8-Pressure bar; 9-Conveyor roller frame;

[0030] 41-Front frame base; 42-Front frame traveling wheel; 43-Front frame bracket; 44-Front frame roller; 45-Front frame connecting rod; 46-Front frame pivot; 47-Front frame clamp; 51-Rear frame base; 52-Rear frame traveling wheel; 53-Rear frame bracket; 54-Rear frame roller; 55-Rear frame connecting rod; 56-Rear frame pivot; 57-Rear frame clamp; 61-Assembly base; 62-Assembly bracket; 63-Assembly roller; 64-Lifting rod; 65-Assembly traveling wheel; 71-Support base; 72-Support connecting structure; 73-Support connecting rod; 74-Support rod; 75-Fork arm structure; 76-Roller body; 81-Pressure rod base; 82-Pressure rod traveling wheel; 83-Pressure rod connecting rod; 84-Lower pressure component. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0032] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. The terms "first," "second," etc., are used to distinguish different objects, not to describe a particular order or hierarchy.

[0033] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0034] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" 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 direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0035] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0036] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0037] In this application, "multiple" means two or more (including two).

[0038] Please refer to Figure 1 and Figure 2 , Figure 1 A front view of an efficient pairing device provided in some embodiments of this application; Figure 2 This is a top view of an efficient pairing device provided in some embodiments of this application.

[0039] This application provides a high-efficiency assembly device, mainly used for precisely assembling the second cylinder section 2 to be assembled with the first cylinder section 1 or the first cylinder section that has already been connected. The device mainly includes a guide rail 3, a front roller frame 4, a rear roller frame 5, and an assembly roller frame 6. The guide rail 3 is set on the mounting platform or the ground to allow the front roller frame 4 and the rear roller frame 5 to move, thereby realizing the assembly of cylinder sections, adjustment of assembly gaps, or transportation of assembled cylinder sections.

[0040] The front roller frame 4 is mounted on the guide rail 3 to support and drive the rotation of the second cylinder section 2 to be assembled. The front roller frame 4 is equipped with a front clamping structure. After the guide rail 3 has been coarsely adjusted, the front clamping structure clamps the front end face of the first cylinder section 1, thereby finely adjusting the assembly gap.

[0041] The rear roller frame 5 is set on the guide rail 3 to support and transport the extended first cylinder section 1 or the first cylinder section. The rear roller frame 5 is equipped with a rear roller frame 5 body and a rear clamping structure. After the rear clamping structure is coarsely adjusted, the rear clamping structure clamps the rear end face of the second cylinder section 2, thereby making precise fine adjustments to the gap between the first cylinder section 1 and the second cylinder section 2.

[0042] The roller frame 6 is located directly below the joint of the two cylinder sections, and simultaneously supports and connects the first cylinder section 1 and the second cylinder section 2 to adjust the misalignment between the first cylinder section 1 and the second cylinder section 2. The misalignment may include the height difference at the joint of the two cylinder sections.

[0043] The high-efficiency assembly device provided in this application operates as follows: the front roller frame 4, the rear roller frame 5, and the assembly roller frame 6 can all move along the guide rail 3. At the start of assembly, the distance between the first cylinder section 1 and the second cylinder section 2 is adjusted by driving them to move towards or away from each other on the guide rail 3, thus achieving a coarse adjustment of the assembly gap between the end faces of the two cylinder sections. After the coarse adjustment is completed, the front clamping structure and the rear clamping structure are activated, causing them to press tightly against the end faces of their respective cylinder sections. When the gap reaches a preset value, the positions of the front clamping structure and the rear clamping structure are locked. This fixes the two cylinder sections from both ends, fixing the gap between the two assembled cylinder sections and preventing it from changing during subsequent operations. Subsequently, the assembly roller frame 6 is positioned directly below the joint between the first cylinder section 1 and the second cylinder section 2. By utilizing the misalignment between the first cylinder section 1 and the second cylinder section 2 (i.e., the height difference between the inner and outer walls of the two cylinder sections) using the assembly roller frame 6, the ports of the two cylinder sections are precisely adjusted to the same plane, thereby eliminating the misalignment.

[0044] like Figure 5As shown. In one specific embodiment, the front roller frame 4 further includes a front roller frame body, which includes a front frame base 41, a front frame traveling wheel 42, a front frame bracket 43, and a front frame roller 44. The front frame traveling wheel 42 is disposed at the bottom of the front frame base 41, the front frame bracket 43 connects the front frame base 41 and the front frame roller 44, and the front frame roller 44 supports the second cylinder section 2.

[0045] The front frame base 41 is the main load-bearing structure of the front roller frame. The front frame wheels 42 are installed at the bottom of the front frame base 41 and can be equipped with a braking structure. The front frame bracket 43 is connected to the front frame base 41 to ensure support height. The top of the front frame bracket 43 is equipped with front frame wheels 44, which can be driven by a motor. The front frame wheels 44 can be rubber wheels. The second cylinder section 2 can be supported and driven to rotate by the front frame wheels 44. The surface of the front frame wheels 44 in contact with the second cylinder section 2 can be covered with a rubber layer to increase the friction between the two sections and protect the second cylinder section 2. The front frame wheels 42 are located at the bottom of the front frame base 41, allowing the entire front roller frame 4 to sit on the guide rail 3 and move along the guide rail 3.

[0046] In this embodiment, the movement and coarse positioning of the entire roller frame within the workshop area are realized through the front frame traveling wheels 42 and guide rails 3. This is the basis for achieving coarse adjustment of the gap and greatly reduces the frequency of overhead crane hoisting. The front frame support 43 and the front frame rollers 44 can jointly form a stable support for the second cylinder section 2. By driving the front frame rollers 44 with a motor, the precise rotational positioning of the cylinder section during the assembly process is realized, so that the assembly spot welding can be carried out in sections.

[0047] In addition, the front clamping structure includes a front frame connecting rod 45, a front frame pivot 46, a front frame driver, and a front frame clamp 47. The front frame connecting rod 45 connects the front frame base 41 and the front frame clamp 47 through the front frame pivot 46. The front frame driver drives the connected front frame clamp 47 to clamp the front end face of the second cylinder section 2.

[0048] The bottom end of the front frame connecting rod 45 is fixed to the front frame base 41. The front frame clamp 47 is fitted onto the front frame rotating shaft 46 through its shaft hole, forming a hinged connection structure. The front frame driver is hinged to the middle of the arm of the front frame clamp 47. The front frame driver pushes or pulls the clamp arm, causing the clamp to rotate around the rotating shaft, bringing the clamping end closer to or away from the cylinder section. Furthermore, by precisely controlling the stroke of the hydraulic cylinder or electric push rod, the clamp can be driven to rotate at a small angle, thereby achieving precise adjustment of the assembly gap. Once the gap is adjusted to the correct position, the hydraulic check valve or hydraulic lock in the hydraulic system, or the electromagnetic brake of the electric push rod, is activated to lock the assembly, achieving precise and efficient control of the assembly gap.

[0049] like Figure 6As shown. In another specific embodiment, the rear roller frame 5 includes a rear frame base 51, a rear frame traveling wheel 52, a rear frame bracket 53, a rear frame roller 54, a rear frame connecting rod 55, a rear frame rotating shaft 56, and a rear frame clamp 57.

[0050] The rear frame base 51 provides a stable base for the entire rear roller frame 5. Rear frame wheels 52 are mounted on the bottom of the rear frame base 51, matching the guide rail 3, allowing the entire rear roller frame 5 to move on the guide rail 3. Each rear frame wheel 52 can be equipped with an independent brake disc or brake, which can securely lock the rear roller frame 5 onto the guide rail 3 once it reaches the target workstation.

[0051] Two symmetrically arranged rear frame supports 53 are fixedly connected to the upper surface of the rear frame base 51. A rear frame roller 54 is mounted on the top of each rear frame support 53 via a bearing seat. The rear frame roller 54 can be driven by a motor, and its outer surface can be covered with a flexible material to increase friction with the first cylinder section 1 while preventing scratches on the surface of the first cylinder section 1. The two rear frame rollers 54 together support the first cylinder section 1 and allow it to rotate under certain driving force.

[0052] The rear clamping structure, mounted on the rear frame base 51, is a component for precise gap adjustment. The rear frame connecting rod 55 is a sturdy upright, its end fixed to the rear frame base 51. The rear frame connecting rod 55 is rotatably connected to the rear frame rotating shaft 56. The rear frame clamp 57 is a swing-arm type clamping arm, one end of which is connected to the rear frame rotating shaft 56, allowing the entire rear frame clamp 57 to rotate around the rear frame rotating shaft 56. The side of the rear frame clamp 57 facing the first cylinder section 1 can clamp the rear end face of the first cylinder section 1.

[0053] In this embodiment, the rear roller frame 5 achieves stable support and movement of the first cylinder section 1 through its rear frame roller 54, and achieves precise clamping and locking of the end face of the first cylinder section 1 through the rear clamping structure, so as to ensure the subsequent assembly accuracy.

[0054] refer to Figure 3 , Figure 4 and Figure 10 In one specific embodiment, the high-efficiency assembly device further includes two support arms 7. The two support arms 7 are symmetrically distributed on both sides of the first cylinder section 1 or the second cylinder section 2. The two support arms 7 provide external support when assembling the thin-walled cylinder to ensure that the cylinder is firmly fixed and to prevent movement during the welding process from affecting the assembly accuracy.

[0055] Specifically, the support arm 7 includes a support base 71, a support connecting structure 72, a support connecting rod 73, and a support rod 74. The support base 71 is fixed to the ground, and the support connecting structure 72 is fixedly installed on the support base 71, with a first rotating shaft inside. One end of the support connecting rod 73 is hinged to the support connecting structure 72 through the first rotating shaft, allowing the support connecting rod 73 to rotate relative to the support base in a vertical plane. One end of the support rod 74 is hinged to the other end of the support connecting rod 73 through a second rotating shaft, allowing the support rod 74 to rotate relative to the support connecting rod 73. In this way, through the combined rotation of the support connecting rod 73 and the support rod 74, the overall posture and extension range of the support arm 7 can be flexibly adjusted to adapt to cylinders of different diameters.

[0056] Furthermore, a fork arm structure 75 can be provided at the end of the support rod 74, that is, the end opposite to the support connecting rod 73. Two rollers 76 are rotatably mounted parallel to this fork arm structure 75. These two rollers 76 can rotate independently. When the support arm 7 is adjusted into place, these two rollers 76 simultaneously contact the outer wall of the cylinder, changing the point contact to a line contact, dispersing the supporting force, avoiding damage to the cylinder, and allowing the cylinder to rotate easily during assembly.

[0057] Furthermore, the rotating shafts on the support connection structure 72 and the support link 73 are driven by a motor and have positioning and locking functions, which can realize automatic and precise control and position holding of the support arm 7.

[0058] like Figure 11 As shown. Regarding the structure of the pressure bar 8, in one specific embodiment, the pressure bar 8 is set on the ground foundation near the assembly area, and can apply a downward pressure to the cylinder section locally in the later stage of assembly (e.g., the 120° area after the cylinder section welding), when most of the area between the first cylinder section 1 and the second cylinder section 2 has been spot welded and the end face is no longer free, to help adjust the misalignment that is difficult to eliminate.

[0059] The pressure bar 8 specifically includes a pressure bar base 81, a pressure bar connecting rod 83, and a lower pressure member 84. The bottom of the pressure bar base 81 is equipped with pressure bar casters 82, allowing it to move on the guide rail 3 or the ground to adjust the lower pressure position. The pressure bar connecting rod 83 is a rigid structure, with its lower end firmly connected to the pressure bar base 81 and its upper end connected to the lower pressure member 84.

[0060] In one specific implementation, the pressure rod 8 also includes a hydraulic actuator. This hydraulic actuator can be integrated inside the pressure rod connecting rod 83 or externally located on one side of the connecting rod. The cylinder of the hydraulic actuator is connected to the pressure rod connecting rod 83 or the pressure rod base 81, and its piston rod is drivenly connected to the lower pressure member 84. By extending and retracting the hydraulic actuator, the lower pressure member 84 can be driven to perform pressing or lifting actions. This hydraulic system has positioning and locking functions, enabling precise control of the magnitude and position of the downward force, and stable holding after the required force is achieved.

[0061] Between the assembly roller frame 6 and the rear roller frame 5, a conveyor roller frame 9 is also installed. The conveyor roller frame 9 is also mounted on the guide rail 3. Its main function is to assist in supporting the first cylinder section 1. After one cylinder section is assembled, it works in conjunction with the rear roller frame 5 to convey the extended cylinder section to the right, thus freeing up space above the front roller frame 4 and the assembly roller frame 6 for the hoisting of the next cylinder section to be assembled, achieving a cyclical assembly process. The height of the rollers on the conveyor roller frame 9 can be hydraulically adjusted to lift the cylinder when needed and to avoid obstacles during assembly.

[0062] refer to Figure 7 , Figure 8 and Figure 9 Regarding the implementation of the assembly roller frame 6, the assembly roller frame 6 specifically includes an assembly base 61, with assembly wheels 65 mounted on the bottom of the assembly base 61, allowing it to move and be fixed on the guide rail 3. Four assembly rollers 63 are supported above the assembly base 61 by four assembly brackets 62, and these rollers collectively support the mating area of ​​the first cylinder section 1 and the second cylinder section 2 to be assembled.

[0063] Furthermore, the assembly roller frame 6 also includes a power unit and two lifting rods 64 driven by the power unit. The power unit can be a hydraulic station or a servo motor assembly. Exemplarily, one lifting rod 64 is used to lift the bottom of the second cylinder section 2, and the other lifting rod 64 is used to lift the bottom of the first cylinder section 1. The two lifting rods 64 are independently driven by the power unit, enabling precise lifting and lowering respectively, thereby effectively adjusting the misalignment at the joint of the two cylinder sections. In addition, the lifting rods 64 have positioning and locking functions to ensure that the misalignment does not change during spot welding.

[0064] Furthermore, this application embodiment also provides an efficient pairing method, which is applied to the aforementioned efficient pairing device, and specifically includes the following steps:

[0065] Step 1: Use a crane to hoist the second cylinder section 2 onto the front roller frame 4 and the assembly roller frame 6, and hoist the first cylinder section 1 onto the assembly roller frame 6, the conveyor roller frame 9, and the rear roller frame 5.

[0066] Step 2: Determine the angular position of the first pairing point. Start the drive motor of the front roller frame 4 to make its rollers rotate, which in turn drives the second cylinder section 2 to rotate until the designated first pairing point is reached.

[0067] Step 3: Fix the front roller frame 4 and the assembly roller frame 6 on the guide rail 3, then move the conveyor roller frame 9 and the rear roller frame 5 synchronously to push the first cylinder section 1 closer to the second cylinder section 2 for coarse adjustment of the assembly gap. Next, activate the front clamping structure and the rear clamping structure to make their clamps rotate and press against the end faces of their respective cylinder sections to achieve precise fine adjustment of the gap.

[0068] Step 4: Observe the misalignment at the joint of the two cylinder sections. Using the independent control group, lift the ends of the second cylinder section 2 or the first cylinder section 1 with the two lifting rods 64 on the roller frame 6 respectively, providing local and precise lifting force to correct the roundness deviation and relative position of the two cylinder sections and adjust the misalignment to the qualified range.

[0069] Step 5: After ensuring that the gap and misalignment meet the requirements, spot welding is performed to initially fix the two cylinder sections in this position.

[0070] Step Six: Rotate and repeat. The motor drives the rollers of the front roller frame 4, causing the cylinder section to rotate to the next assembly point.

[0071] Repeat steps three through five to complete most of the spot welding. In the later stages of assembly, when the sections are partially connected and fixed, pressure rods can be used to apply downward pressure to assist in step four for misalignment adjustment.

[0072] Step 7: Conveying and Resetting. After completing the assembly of the current second cylinder section 2, the hydraulically driven conveyor roller frame 9 lowers and disengages from the first cylinder section 1. After moving the conveyor roller frame 9 to the left to a suitable position, its rollers rise to support the cylinder again. Subsequently, the conveyor roller frame 9 and the rear roller frame 5 together move the extended first cylinder section 1 to the right, thereby freeing up the space above the front roller frame 4 and the assembly roller frame 6.

[0073] Repeat steps one through seven to assemble the next section of the cylinder, until the entire long cylinder is assembled. During the process, if assembling a thin-walled cylinder, support arms 7 can be used on both sides of the section to support it and control deformation.

[0074] The above provides a detailed description of the efficient pairing device and efficient pairing method provided in this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of this application. It should be noted that those skilled in the art can make various improvements and modifications to this application without departing from its principles, and these improvements and modifications also fall within the protection scope of this application.

Claims

1. A high-efficiency pairing device, characterized in that, include: Guide rail (3); A front roller frame (4) is disposed on the guide rail (3). The front roller frame (4) is used to support and transport the second cylinder section (2) along the guide rail (3). The front roller frame (4) includes a front clamping structure for clamping the front end face of the second cylinder section (2). The front roller frame (4) also includes a front roller frame body, which includes a front frame base (41), a front frame traveling wheel (42), a front frame support (43), and a front frame roller (44). The front frame traveling wheel (42) is disposed at the bottom of the front frame base (41). The front frame support (43) connects the front frame base (41) and the front frame roller (44). The front frame roller (44) is used to support the second cylinder section (2). The front clamping structure includes a front frame connecting rod (45), a front frame pivot (46), a front frame driver, and a front frame clamp (47). The front frame connecting rod (45) connects the front frame base (41) and the front frame clamp (47) through the front frame pivot (46). The front frame driver drives the front frame clamp (47) to clamp the front end face of the second cylinder (2). The front frame driver is hinged to the middle of the arm of the front frame clamp (47). The front frame driver pushes or pulls the arm of the front frame clamp (47). The front frame clamp (47) rotates around the pivot, so that the clamping end is close to or away from the second cylinder (2). A rear roller frame (5) is disposed on the guide rail (3). The rear roller frame (5) is used to support and transport the first cylinder section (1) along the guide rail (3). The rear roller frame (5) includes a rear clamping structure for clamping the rear end face of the first cylinder section (1). The rear roller frame (5) also includes a rear roller frame body, which includes a rear frame base (51), a rear frame traveling wheel (52), a rear frame support (53), and a rear frame roller (54). The rear frame traveling wheel (52) is disposed at the bottom of the rear frame base (51). The rear frame support (53) connects the rear frame base (51) and the rear frame roller (54). The rear frame roller (54) is used to support the first cylinder section (1). The rear clamping structure includes a rear frame connecting rod (55), a rear frame rotating shaft (56), a rear frame driver, and a rear frame clamp (57). The rear frame connecting rod (55) connects the rear frame base (51) and the rear frame clamp (57) through the rear frame rotating shaft (56). The rear frame driver drives the rear frame clamp (57) to clamp the rear end face of the first cylinder section (1). The roller frame (6) is positioned between the front roller frame (4) and the rear roller frame (5) and is used to lift and adjust the misalignment of the first cylinder section (1) and the second cylinder section (2).

2. The high-efficiency pairing device according to claim 1, characterized in that, It also includes two support arms (7), which are symmetrically distributed on both sides of the first cylindrical section (1) or on both sides of the second cylindrical section (2); The support arm (7) includes a support base (71), a support connection structure (72), a support link (73), and a support rod (74). The support link (73) is rotatably connected to the support connection structure (72), and the support rod (74) is rotatably connected to the support link (73).

3. The high-efficiency pairing device according to claim 2, characterized in that, The support rod (74) is provided with a fork arm structure (75) at the end opposite to the support connecting rod (73), and the fork arm structure (75) is rotatably provided with two roller bodies (76).

4. The high-efficiency pairing device according to claim 1, characterized in that, It also includes a pressure bar (8) for applying downward pressure to the assembled cylinder sections to adjust the misalignment between the first cylinder section (1) and the second cylinder section (2); The pressure bar (8) includes a pressure bar base (81) with pressure bar wheels (82), a pressure bar connecting rod (83), and a lower pressure member (84). The pressure bar connecting rod (83) is fixedly connected to the pressure bar base (81) and the lower pressure member (84).

5. The high-efficiency pairing device according to claim 4, characterized in that, The pressure rod (8) also includes a hydraulic actuator, which is connected to the pressure rod link (83) and drives the lower pressure member (84).

6. The high-efficiency pairing device according to claim 1, characterized in that, It also includes a conveyor roller frame (9), which is disposed between the pair roller frame (6) and the rear roller frame (5) to support and convey the first cylinder section (1).

7. The high-efficiency pairing device according to claim 1, characterized in that, The pairing roller frame (6) includes a pairing base (61) with pairing wheels (65), four pairing brackets (62) and four pairing rollers (63). The pairing roller frame (6) also includes a power unit and two lifting rods (64) that drive the power unit.

8. A high-efficiency pairing method, applied to the high-efficiency pairing apparatus according to any one of claims 1 to 7, characterized in that, include: Step 1: Hoist the second cylinder section (2) and the first cylinder section (1) onto the front roller frame (4) and the rear roller frame (5) respectively, and assemble the roller frame (6) to support the second cylinder section (2) and the first cylinder section (1) at the same time. Step 2: The front roller frame (4) moves to the second cylinder section (2) to the first pair of points; Step 3: Move the front roller frame (4) and the assembly roller frame (6) to roughly adjust the gap between the second cylinder section (2) and the first cylinder section (1), and then fine adjust the gap through the front clamping structure and the rear clamping structure. Step 4: Adjust the misalignment between the second cylinder section (2) and the first cylinder section (1) by using the assembly roller frame (6); Step 5: Perform spot welding; Step 6: Rotate the cylinder section to the next set of alignment points, and repeat steps 3 to 5; Step 7: After completing the current cylinder section assembly, move the conveyor roller frame (9) and the rear roller frame (5) to move the first cylinder section (1) to the right, making room for the next cylinder section assembly.

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