A welding device for ultra-high-speed magnetic levitation low-vacuum pipelines

Abstract

The present invention discloses a welding device for ultra-high-speed magnetic levitation low-vacuum pipelines, including two U-shaped bases and a plurality of pipeline units, each of which is composed of a U-shaped steel concrete bottom beam and a plurality of n-shaped shells, and the U-shaped steel concrete bottom beam is composed of a U-shaped steel outer shell and a U-shaped concrete beam. Through the setting of the U-shaped base, the mobile U-shaped base can be flexibly aligned with the A end of the manufactured U-shaped steel concrete bottom beam, and after alignment, the positioning structure can be flexibly moved in the U-shaped steel concrete bottom beam, and the positioning structure can align the welding between the U-shaped steel concrete bottom beam and the n-shaped shell and the welding between two adjacent n-shaped shells. Therefore, the device has the function of quickly aligning the welding between the U-shaped steel concrete bottom beam and the n-shaped shell and the welding between two adjacent n-shaped shells, which improves the production progress of the pipeline unit, and also provides a safe working platform for welders, thereby improving the safety of the project.

Description

Technical Field

[0001] The invention relates to the field of rail transportation, and in particular to welding equipment for ultra-high-speed magnetic levitation low-vacuum pipelines. Background Art

[0002] my country's high-speed railway construction technology is becoming more and more perfect, but because the construction method is affected by technical factors such as air resistance, noise, vehicle-track friction, and vehicle-track vibration, it is difficult to achieve new breakthroughs. As the most advanced ground transportation technology in the world, the ultra-high-speed low-vacuum pipeline maglev transportation system has a strong industrial driving force. On the basis of traditional industries such as steel and infrastructure, it will also drive the development of a large number of "high-precision" industries such as power electronics, advanced manufacturing, artificial intelligence, and big data, providing new momentum for the high-quality development of my country's economy. The ultra-high-speed low-vacuum pipeline maglev transportation system uses superconducting magnetic levitation technology to reduce vehicle-track vibration and eliminate vehicle-track friction. By establishing a low-vacuum operating environment, it greatly reduces aerodynamic noise and air resistance. The superconducting synchronous linear motor technology realizes the externalization of the power system to obtain a larger payload and speed, and can achieve a "near-ground flight" with a maximum speed of 1000km / h.

[0003] With the continuous progress and development of my country's maglev rail transit technology, research on equipment related to the maglev field has become increasingly in-depth. Among the maglev rail transit forms, the vacuum pipeline maglev transit form is a special form of transportation operation. It sets up a (low) vacuum pipeline so that the maglev transportation track is set in the pipeline, and the maglev vehicle runs in a near-vacuum environment. Due to the near-vacuum setting of the pipeline, the wind resistance of the maglev vehicle during operation is greatly reduced, and thus a higher-speed operation can be achieved, forming a high-speed maglev rail transit form.

[0004] For vacuum tube high-speed maglev transportation, the vacuum tube is one of the most critical equipment. The quality of its sealing often directly affects the operating speed of the maglev vehicle. In addition, the preparation and installation costs of the vacuum tube often also restrict the design and operation costs of high-speed maglev transportation.

[0005] At present, the preparation of high-speed maglev vacuum pipelines is often prepared by using multiple pipeline units connected at the ends. Each pipeline unit consists of a U-shaped steel-concrete bottom beam A and multiple n-shaped shells B, such as Figure 7As shown, the bottom end of the n-shaped shell B is welded and fixed on the top of the U-shaped steel shell A1, and multiple n-shaped shells B are also connected by welding, and the welding work between multiple n-shaped shells B is carried out above the U-shaped steel concrete bottom beam A. At present, when welding between the U-shaped steel concrete bottom beam A and the n-shaped shell B of the pipeline unit, the n-shaped shell B is first lifted by the lifting equipment and placed on the top of the U-shaped steel concrete bottom beam A. During the placement process, the bottom welding point of the n-shaped shell B needs to be aligned with the top welding point of the U-shaped steel concrete bottom beam A, and the welding points of the two adjacent n-shaped shells B need to be aligned. After the welding points are aligned, welding work can be carried out. At present, the alignment between the two adjacent n-shaped shells B and the alignment between the n-shaped shell B and the U-shaped steel concrete bottom beam A The alignment work between them is completed by workers with the help of tools such as jacks, crowbars, pads, and jacks. This process is labor-intensive and the operation process is relatively cumbersome. In addition, the overall height of the pipeline unit is very high. It happens that the welding stations in the pipeline unit preparation process are all in high positions. During the welding process, workers often need the help of ladders, scaffolding, and mechanical ladders to stay at the welding stations to align and weld with each other. Not only is the work efficiency low, but there is also a safety problem of falling from heights. Therefore, in the welding work between the U-shaped steel concrete bottom beam A and the n-shaped shell B of the pipeline unit, there is a lack of targeted welding auxiliary positioning and alignment equipment, which leads to a slow preparation process of the pipeline unit and seriously affects the progress of the project.

[0006] Based on the above, the present invention designs an ultra-high-speed magnetic levitation low-vacuum pipeline welding device to solve the above-mentioned problems. Summary of the invention

[0007] In order to solve the above-mentioned problems, the present invention provides a welding device for an ultra-high-speed magnetic levitation low-vacuum pipeline.

[0008] The present invention is achieved through the following technical solutions:

[0009] A welding device for an ultra-high-speed magnetic levitation low-vacuum pipeline comprises two U-shaped bases and a plurality of pipeline units, each of the pipeline units is composed of a U-shaped steel-concrete bottom beam and a plurality of n-shaped shells, the U-shaped steel-concrete bottom beam is composed of a U-shaped steel outer shell and a U-shaped concrete beam, the U-shaped concrete beam is fixedly arranged in the U-shaped steel outer shell, an arc-shaped rib is fixedly welded on the outer arc surface of the n-shaped shell, the bottom end of the n-shaped shell is welded and fixed to the top of the U-shaped steel outer shell, and the plurality of n-shaped shells are also fixedly connected by welding, the cross-sectional size of the U-shaped base is the same as the cross-sectional size of the U-shaped steel-concrete bottom beam, and moving wheels are fixedly installed at the four corners of the bottom end of the U-shaped base, and when in use, the two U-shaped bases are symmetrically fitted at the two ends of the U-shaped steel-concrete bottom beam, and a positioning structure for aligning the U-shaped steel-concrete bottom beam and the n-shaped shell is provided in one of the U-shaped bases.

[0010] Preferably, the positioning structure includes a first welding platform, L-shaped plates are respectively fixed on both sides of the first welding platform, and fixing plates are respectively fixed at both ends of each L-shaped plate, and a driving motor is fixedly installed on the side wall of the fixing plate, and the output shaft of the driving motor penetrates the fixing plate and is fixed with a roller, and the bottom end of the roller is in contact with the inner bottom surface of the U-shaped base, and a first step for accessing the first welding platform is fixed at one end of the first welding platform, the transverse plate of the L-shaped plate is located at the upper end of the U-shaped concrete beam, and first guide wheels are symmetrically fixed at both ends of the transverse plate of the L-shaped plate, and the bottom ends of the first guide wheels are in contact with the top end of the U-shaped concrete beam, and welding point alignment structures are symmetrically fixed on the transverse plates of the two L-shaped plates, and a plurality of fourth guide wheels are provided between the vertical plate of the L-shaped plate and the inner wall of the U-shaped concrete beam, the fourth guide wheel is in contact with the inner wall of the U-shaped concrete beam, and the fourth guide wheel is fixedly installed on the vertical plate of the L-shaped plate.

[0011] Preferably, the welding alignment structure includes an inner clamping plate, which is composed of a first vertical plate and a first curved plate, the first curved plate is fixed to the top end of the first vertical plate, the top end of the first vertical plate is aligned with the top end of the U-shaped steel shell, the side wall of the first vertical plate is in contact with the inner wall of the U-shaped steel shell, the outer arc surface diameter of the first curved plate is matched with the inner arc surface diameter of the n-shaped shell, a first welding reserved opening is provided at the connection between the first vertical plate and the first curved plate, an L-shaped connecting plate is fixed on the outer arc surface of the first curved plate, the vertical plate of the L-shaped connecting plate is located outside the U-shaped steel shell, and a first limiting plate is fixed to the bottom end of the L-shaped connecting plate, a plurality of first mounting openings are provided on the first limiting plate, a second guide wheel is installed in each of the first mounting openings, and a second guide wheel is installed in each of the first mounting openings. The guide wheel fits with the bottom of the U-shaped steel shell, a horizontal plate is fixed at one end of the vertical plate of the L-shaped connecting plate, an outer clamping plate is fixed at the top of the horizontal plate, the outer clamping plate is composed of a second vertical plate and a second arc plate, the second arc plate is fixed on the top of the second vertical plate, a second welding reserved opening is provided at the connection between the second arc plate and the second vertical plate, the side wall of the second vertical plate fits with the outer wall of the U-shaped steel shell, and the top of the second vertical plate is aligned with the top of the U-shaped steel shell, a slot is provided at the center of the top of the second arc plate for inserting the bottom end of the arc rib plate on the n-shaped shell, a second limiting plate is fixed at the bottom end of the horizontal plate, a plurality of second mounting openings are provided on the second limiting plate, a third guide wheel is installed in each of the second mounting openings, and the third guide wheel fits with the bottom of the U-shaped steel shell.

[0012] Preferably, a second welding platform is fixedly installed on the side wall of the horizontal plate, the second welding platform is L-shaped, a second step of the upper second welding platform is fixed at one end of the second welding platform, and a first guardrail is fixed at the edge of the top surface of the second welding platform.

[0013] Preferably, two trapezoidal plates are fixed on the side walls of the two transverse plates, and two guide rods are symmetrically fixed between the two trapezoidal plates, and cylinders are slidably sleeved on the two guide rods, and the two cylinders are fixedly connected by a connecting plate. A first hydraulic cylinder is fixedly installed at the center of the top surface of the connecting plate, and the telescopic end of the first hydraulic cylinder penetrates the connecting plate and is fixed with a Z-shaped connecting plate, and a second hydraulic cylinder is fixedly installed on one of the side walls of the trapezoidal plates, and the telescopic end of the second hydraulic cylinder penetrates the trapezoidal plate and is fixedly connected to the Z-shaped connecting plate, and two guide sliding rods are symmetrically penetrated on the connecting plate, and the guide sliding rods are slidably connected to the connecting plate, and the bottom end of the guide sliding rod is fixedly connected to the Z-shaped connecting plate, and an arc pressure plate is provided between the two Z-shaped connecting plates, and the two sides of the arc pressure plate are fixedly connected to the two Z-shaped connecting plates by vertical rods, the inner arc surface diameter of the arc pressure plate is matched with the outer arc surface diameter of the n-shaped shell, and a third welding reserved opening for welding two adjacent n-shaped shells is opened on the outer arc surface of the arc pressure plate

[0014] Preferably, an arc-shaped connecting plate is fixed on the side end surface of the arc-shaped pressure plate, the inner arc surface of the arc-shaped connecting plate is aligned with the inner arc surface of the arc-shaped pressure plate, and a third welding platform is fixed on the side end surface of the arc-shaped connecting plate. The middle part of the third welding platform is convex in an arc shape, and a second guardrail is fixed at the edge of the top surface of the third welding platform. Climbing ladders for climbing onto the third welding platform are respectively fixed at both ends of the third welding platform, and an arc-shaped anti-fall frame is fixed on the side wall of the climbing ladder.

[0015] Preferably, the first hydraulic cylinder and the second hydraulic cylinder are respectively connected to an external hydraulic station pipeline through a conduit.

[0016] Preferably, the drive motor is electrically connected to an external power source via a wire.

[0017] The U-shaped base is set so that the movable U-shaped base can be flexibly aligned with the end A of the manufactured U-shaped steel concrete bottom beam. After alignment, the positioning structure can be flexibly moved in the U-shaped steel concrete bottom beam. The positioning structure can align the weld between the U-shaped steel concrete bottom beam and the n-shaped shell and the weld between two adjacent n-shaped shells. The staff can perform welding work on the aligned welds through the first welding reserved opening, the second welding reserved opening and the third welding reserved opening. Moreover, the setting of the first welding platform, the second welding platform and the third welding platform provides a stable and safe working platform for the welding workers. Therefore, the present invention has the function of quickly aligning the weld between the U-shaped steel concrete bottom beam and the n-shaped shell and the weld between two adjacent n-shaped shells, thereby improving the production progress of the pipeline unit and providing a safe working platform for the welders, thereby improving the safety of the project. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a structural diagram of the structure of the present invention;

[0019] Figure 2 The structure of the present invention Figure 1 A partial structural cross-sectional view of

[0020] Figure 3 The structure of the present invention Figure 1 A front view of

[0021] Figure 4 The structure of the present invention Figure 1 Working instructions Figure 1 ;

[0022] Figure 5 The structure of the present invention Figure 1 Working instructions Figure 2 ;

[0023] Figure 6 The structure of the present invention Figure 1 Working instructions Figure 3 ;

[0024] Figure 7 It is a structural schematic diagram of the existing pipeline unit.

[0025] In the figure: U-shaped base 1, U-shaped steel concrete bottom beam A, n-shaped shell B, U-shaped steel shell A1, U-shaped concrete beam A2, arc rib B1, moving wheel 2, positioning structure 3, first welding platform 4, L-shaped plate 5, fixed plate 6, drive motor 7, roller 8, first step 9, first guide wheel 10, welding alignment structure 11, inner clamping plate 12, first vertical plate 12-1, first arc plate 12-2, first welding reserved opening 13, L-shaped connecting plate 14, first limiting plate 15, first installation opening 16, second guide wheel 17, horizontal plate 18, outer clamping plate 19, second vertical plate 19- 1. The second arc plate 19-2, the second welding reserved opening 20, the slot 21, the second limit plate 22, the second installation opening 23, the third guide wheel 24, the second welding platform 25, the second step 26, the first guardrail 27, the trapezoidal plate 28, the guide rod 29, the cylinder 30, the connecting plate 31, the first hydraulic cylinder 32, the Z-shaped connecting plate 33, the guide slide bar 34, the arc pressure plate 35, the vertical rod 36, the third welding reserved opening 37, the second hydraulic cylinder 38, the arc connecting plate 39, the third welding platform 40, the second guardrail 41, the climbing ladder 42, the arc anti-fall frame 43, and the fourth guide wheel 44. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0027] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, a welding device for an ultra-high-speed magnetic levitation low-vacuum pipeline comprises two U-shaped bases 1 and a plurality of pipeline units, each of the pipeline units being composed of a U-shaped steel-concrete bottom beam A and a plurality of n-shaped shells B, the U-shaped steel-concrete bottom beam A being composed of a U-shaped steel outer shell A1 and a U-shaped concrete beam A2, the U-shaped concrete beam A2 being fixedly arranged in the U-shaped steel outer shell A1, an arc-shaped rib B1 being fixedly welded on the outer arc surface of the n-shaped shell B, the bottom end of the n-shaped shell B being welded and fixed to the top of the U-shaped steel outer shell A1, and the plurality of n-shaped shells B being fixedly connected by welding, the cross-sectional size of the U-shaped base 1 being the same as the cross-sectional size of the U-shaped steel-concrete bottom beam A, and moving wheels 2 being fixedly installed at the four corners of the bottom end of the U-shaped base 1, and when in use, the two U-shaped bases 1 being symmetrically fitted at the two ends of the U-shaped steel-concrete bottom beam A, and a positioning structure 3 for aligning the U-shaped steel-concrete bottom beam A and the n-shaped shell B being arranged in one of the U-shaped bases 1.

[0028] The positioning structure 3 includes a first welding platform 4, L-shaped plates 5 are fixed on both sides of the first welding platform 4, and fixed plates 6 are fixed at both ends of each L-shaped plate 5. A driving motor 7 is fixedly installed on the side wall of the fixed plate 6, and the output shaft of the driving motor 7 penetrates the fixed plate 6 and is fixed with a roller 8, and the bottom end of the roller 8 contacts the inner bottom surface of the U-shaped base 1. A first step 9 for accessing the first welding platform 4 is fixed at one end of the first welding platform 4, and the transverse plate of the L-shaped plate 5 is located at the upper end of the U-shaped concrete beam A2, and first guide wheels 10 are symmetrically fixed at both ends of the transverse plate of the L-shaped plate 5, and the bottom ends of the first guide wheels 10 contact the top of the U-shaped concrete beam A2, and welding point alignment structures 11 are symmetrically fixed on the transverse plates of the two L-shaped plates 5, and a plurality of fourth guide wheels 44 are provided between the vertical plate of the L-shaped plate 5 and the inner wall of the U-shaped concrete beam A2, and the fourth guide wheel 44 is in contact with the inner wall of the U-shaped concrete beam A2, and the fourth guide wheel 44 is fixedly installed on the vertical plate of the L-shaped plate 5.

[0029] The welding alignment structure 11 includes an inner clamping plate 12, which is composed of a first vertical plate 12-1 and a first arc plate 12-2. The first arc plate 12-2 is fixed to the top of the first vertical plate 12-1. The top of the first vertical plate 12-1 is aligned with the top of the U-shaped steel shell A1. The side wall of the first vertical plate 12-1 fits the inner wall of the U-shaped steel shell A1. The outer arc surface diameter of the first arc plate 12-2 is matched with the inner arc surface diameter of the U-shaped shell B. A first welding reserved opening 13 is provided at the connection between the vertical plate 12-1 and the first arc plate 12-2, an L-shaped connecting plate 14 is fixed to the outer arc surface of the first arc plate 12-2, the vertical plate of the L-shaped connecting plate 14 is outside the U-shaped steel shell A1, and a first limiting plate 15 is fixed to the bottom end of the L-shaped connecting plate 14, and a plurality of first installation openings 16 are provided on the first limiting plate 15, and a second guide wheel 17 is installed in each of the first installation openings 16, and the second guide wheel 17 is connected to the first limiting plate 15. The bottom of the U-shaped steel shell A1 is fitted, a horizontal plate 18 is fixed to one end of the vertical plate of the L-shaped connecting plate 14, an outer clamping plate 19 is fixed to the top of the horizontal plate 18, and the outer clamping plate 19 is composed of a second vertical plate 19-1 and a second arc plate 19-2. The second arc plate 19-2 is fixed to the top of the second vertical plate 19-1. A second welding reserved opening 20 is opened at the connection between the second arc plate 19-2 and the second vertical plate 19-1. The side wall of the second vertical plate 19-1 is connected to the U-shaped steel shell A1. The outer wall of the shell A1 is fitted, and the top of the second vertical plate 19-1 is aligned with the top of the U-shaped steel shell A1. A slot 21 is provided at the center of the top of the second arc-shaped plate 19-2 for inserting the bottom end of the arc-shaped rib B1 on the n-shaped shell B. A second limiting plate 22 is fixed to the bottom of the transverse plate 18. A plurality of second mounting openings 23 are provided on the second limiting plate 22. A third guide wheel 24 is installed in each of the second mounting openings 23. The third guide wheel 24 is fitted with the bottom of the U-shaped steel shell A1.

[0030] A second welding platform 25 is fixedly mounted on the side wall of the transverse plate 18 . The second welding platform 25 is L-shaped. A second step 26 of the upper second welding platform 25 is fixed at one end of the second welding platform 25 . A first guardrail 27 is fixed at the top edge of the second welding platform 25 .

[0031] Two trapezoidal plates 28 are fixed on the side walls of the two transverse plates 18, and two guide rods 29 are symmetrically fixed between the two trapezoidal plates 28. Cylinders 30 are respectively slidably sleeved on the two guide rods 29, and the two cylinders 30 are fixedly connected by a connecting plate 31. A first hydraulic cylinder 32 is fixedly installed at the center of the top surface of the connecting plate 31. The telescopic end of the first hydraulic cylinder 32 penetrates the connecting plate 31 and is fixed with a Z-shaped connecting plate 33. A second hydraulic cylinder 38 is fixedly installed on the side wall of one of the trapezoidal plates 28. The telescopic end of the second hydraulic cylinder 38 penetrates the trapezoidal plate 28 and is fixed with the Z-shaped connecting plate 33. The connecting plate 33 is fixedly connected, and two guide slide bars 34 are symmetrically penetrated on the connecting plate 31. The guide slide bars 34 are slidably connected to the connecting plate 31, and the bottom ends of the guide slide bars 34 are fixedly connected to the Z-shaped connecting plate 33. An arc-shaped pressure plate 35 is provided between the two Z-shaped connecting plates 33. The two sides of the arc-shaped pressure plate 35 are fixedly connected to the two Z-shaped connecting plates 33 through vertical rods 36 respectively. The inner arc surface diameter of the arc-shaped pressure plate 35 is matched with the outer arc surface diameter of the n-shaped shell B, and a third welding reserved opening 37 for welding two adjacent n-shaped shells B is provided on the outer arc surface of the arc-shaped pressure plate 35.

[0032] An arc-shaped connecting plate 39 is fixed on the side end surface of the arc-shaped pressure plate 35, and the inner arc surface of the arc-shaped connecting plate 39 is aligned with the inner arc surface of the arc-shaped pressure plate 35. A third welding platform 40 is fixed on the side end surface of the arc-shaped connecting plate 39. The middle part of the third welding platform 40 is convex in an arc shape, and a second guardrail 41 is fixed at the edge of the top surface of the third welding platform 40. Climbing ladders 42 for climbing onto the third welding platform 40 are respectively fixed at both ends of the third welding platform 40, and an arc-shaped anti-fall frame 43 is fixed on the side wall of the climbing ladder 42.

[0033] The first hydraulic cylinder 32 and the second hydraulic cylinder 38 are connected to the external hydraulic station pipeline through conduits respectively.

[0034] The driving motor 7 is electrically connected to an external power source via a wire.

[0035] Working principle: When the present invention is used, firstly, two U-shaped bases 1 are moved to the two ends of the U-shaped steel-concrete bottom beam A (such as Figure 4 As shown), align the end of the U-shaped base 1 with the end of the U-shaped base 1, so that when the drive motor 7 is started, the roller 8 can drive the positioning structure 3 to move from the positioning structure 3 to the U-shaped steel concrete bottom beam A. During the movement of the positioning structure 3, the first guide wheel 10, the second guide wheel 17, the third guide wheel 24, and the fourth guide wheel 44 provide a guiding function for it to prevent the positioning structure 3 from generating jamming friction with the U-shaped steel concrete bottom beam A during the movement.

[0036] When welding the n-shaped shell B on the top of the U-shaped steel concrete bottom beam A, first move the positioning structure 3 from the U-shaped base 1 where it is stored to the rightmost end of the U-shaped steel concrete bottom beam A (such as Figure 5 As shown), at this time, the roller 8 on the right side of the positioning structure 3 will enter another U-shaped base 1, and this U-shaped base 1 plays a supporting role for the positioning structure 3. At this time, the n-shaped shell B is placed on the positioning structure 3 by the lifting equipment. When placing, the two ends of the n-shaped shell B are respectively placed between the corresponding two groups of inner clamps 12 and outer clamps 19. At this time, due to the inner clamp 12, the inner arc surface of the n-shaped shell B is aligned with the inner wall of the U-shaped steel shell A1, and the outer clamp 19 makes the outer arc surface of the n-shaped shell B aligned with the outer wall of the U-shaped steel shell A1, thereby achieving the purpose of aligning the welding point of the U-shaped concrete beam A2 and the n-shaped shell B. At this time, the staff can stand on the first welding platform 4 to weld the inner weld of the U-shaped concrete beam A2 and the n-shaped shell B through the first welding reserved opening 13, and the staff can stand on the second welding platform 25 to weld the outer weld of the U-shaped concrete beam A2 and the n-shaped shell B through the second welding reserved opening 20. When the welding of the first n-shaped shell B is completed, the positioning structure 3 is moved to the left to weld the next n-shaped shell B (such as Figure 6 As shown in the figure), when the next n-shaped shell B is placed on the positioning structure 3, the second n-shaped shell B is placed close to the first n-shaped shell B that has been welded. In this way, when the bottom end of the second n-shaped shell B is welded to the top end of the U-shaped concrete beam A2, the arc-shaped pressing plate 35 can be moved by the second hydraulic cylinder 38 at the same time, so that the arc-shaped pressing plate 35 is directly above the joint of the two n-shaped shells B, and then the first hydraulic cylinder 32 is controlled to lower the arc-shaped pressing plate 35, so that the arc-shaped pressing plate 35 presses the two n-shaped shells B tightly. At this time, the staff can stand on the third welding platform 40 and weld the joint of the two n-shaped shells B through the third welding reserved opening 37, thereby completing the welding of the two adjacent n-shaped shells B. By analogy, the multiple n-shaped shells B to be welded on the U-shaped steel concrete bottom beam A are welded in sequence according to the above principle.

[0037] Through the setting of the U-shaped base 1, the mobile U-shaped base 1 of the equipment can be flexibly aligned with the end of the U-shaped steel concrete bottom beam A that has been manufactured. After alignment, the positioning structure 3 can be flexibly moved in the U-shaped steel concrete bottom beam A. The positioning structure 3 can align the welding point between the U-shaped steel concrete bottom beam A and the n-shaped shell B and the welding point between two adjacent n-shaped shells B. The staff can perform welding work on the aligned welding points through the first welding reserved opening 13, the second welding reserved opening 20 and the third welding reserved opening 37. Moreover, through the setting of the first welding platform 4, the second welding platform 25 and the third welding platform 40, a stable and safe working platform is provided for the welding workers. Therefore, the equipment has the function of quickly aligning the welding point between the U-shaped steel concrete bottom beam A and the n-shaped shell B and the welding point between two adjacent n-shaped shells B, which improves the production progress of the pipeline unit and provides a safe working platform for the welders.

[0038] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A welding device for an ultra-high-speed magnetic levitation low-vacuum pipeline, comprising two U-shaped bases (1) and a plurality of pipeline units, each of the pipeline units being composed of a U-shaped steel concrete bottom beam (A) and a plurality of n-shaped shells (B), the U-shaped steel concrete bottom beam (A) being composed of a U-shaped steel outer shell (A1) and a U-shaped concrete beam (A2), the U-shaped concrete beam (A2) being fixedly arranged in the U-shaped steel outer shell (A1), an arc-shaped rib plate (B1) being fixedly welded on the outer arc surface of the n-shaped shell (B), the bottom end of the n-shaped shell (B) being welded and fixed to the top of the U-shaped steel outer shell (A1), and the plurality of n-shaped shells (B) being fixedly connected by welding, the cross-sectional dimensions of the U-shaped base (1) being the same as the cross-sectional dimensions of the U-shaped steel concrete bottom beam (A), characterized in that; The U-shaped base (1) is fixedly provided with moving wheels (2) at the four corners of the bottom end thereof. When in use, the two U-shaped bases (1) are symmetrically arranged at the two ends of the U-shaped steel concrete bottom beam (A). A positioning structure (3) for aligning the U-shaped steel concrete bottom beam (A) and the n-shaped shell (B) is provided in one of the U-shaped bases (1). The positioning structure (3) comprises a first welding platform (4). L-shaped plates (5) are fixedly provided at both sides of the first welding platform (4). A fixing plate (6) is fixedly provided at both ends of each L-shaped plate (5). A driving motor (7) is fixedly provided on the side wall of the fixing plate (6). The output shaft of the driving motor (7) penetrates the fixing plate (6) and is fixedly provided with a roller (8). The bottom end of the roller (8) is aligned with the U-shaped bottom beam (A). The first welding platform (4) is fixed with a first step (9) for ascending the first welding platform (4), the transverse plate of the L-shaped plate (5) is located at the upper end of the U-shaped concrete beam (A2), and first guide wheels (10) are symmetrically fixed at both ends of the transverse plate of the L-shaped plate (5), the bottom end of the first guide wheel (10) is in contact with the top end of the U-shaped concrete beam (A2), and welding point alignment structures (11) are symmetrically fixed on the transverse plates of the two L-shaped plates (5), and a plurality of fourth guide wheels (44) are arranged between the vertical plate of the L-shaped plate (5) and the inner wall of the U-shaped concrete beam (A2), the fourth guide wheels (44) are in contact with the inner wall of the U-shaped concrete beam (A2), and the fourth guide wheels (44) are fixed to the inner wall of the U-shaped concrete beam (A2). The weld alignment structure (11) is fixedly mounted on a vertical plate of an L-shaped plate (5), the weld alignment structure (11) comprises an inner clamping plate (12), the inner clamping plate (12) comprises a first vertical plate (12-1) and a first curved plate (12-2), the first curved plate (12-2) is fixed to the top of the first vertical plate (12-1), the top of the first vertical plate (12-1) is aligned with the top of the U-shaped steel shell (A1), the side wall of the first vertical plate (12-1) is fitted with the inner wall of the U-shaped steel shell (A1), the outer arc surface diameter of the first curved plate (12-2) is matched with the inner arc surface diameter of the U-shaped shell (B), a first welding reserved opening (13) is provided at the connection between the first vertical plate (12-1) and the first curved plate (12-2), the first An L-shaped connecting plate (14) is fixed on the outer arc surface of the arc plate (12-2), the vertical plate of the L-shaped connecting plate (14) is located outside the U-shaped steel shell (A1), and a first limiting plate (15) is fixed to the bottom end of the L-shaped connecting plate (14), a plurality of first mounting openings (16) are opened on the first limiting plate (15), and a second guide wheel (17) is installed in each of the first mounting openings (16), and the second guide wheel (17) is in contact with the bottom of the U-shaped steel shell (A1), a horizontal plate (18) is fixed to one end of the vertical plate of the L-shaped connecting plate (14), and an outer clamping plate (19) is fixed to the top end of the horizontal plate (18), and the outer clamping plate (19) is composed of a second vertical plate (19-1) and a second arc plate (19-2).The second arc-shaped plate (19-2) is fixed on the top of the second vertical plate (19-1); a second welding reserved opening (20) is provided at the connection between the second arc-shaped plate (19-2) and the second vertical plate (19-1); the side wall of the second vertical plate (19-1) is in contact with the outer wall of the U-shaped steel shell (A1); the top of the second vertical plate (19-1) is aligned with the top of the U-shaped steel shell (A1); a slot (21) is provided at the center of the top of the second arc-shaped plate (19-2) for inserting the bottom end of the arc-shaped rib plate (B1) on the U-shaped shell (B); a second limiting plate (22) is fixed at the bottom end of the horizontal plate (18); and the second limiting plate (22) is provided with a slot (21) on the top of the second arc-shaped plate (19-2). A plurality of second mounting openings (23) are provided, each of the second mounting openings (23) is provided with a third guide wheel (24), the third guide wheel (24) is fitted with the bottom of the U-shaped steel shell (A1), a second welding platform (25) is fixedly installed on the side wall of the transverse plate (18), two trapezoidal plates (28) are fixed on the side walls of the two transverse plates (18), two guide rods (29) are symmetrically fixed between the two trapezoidal plates (28), a cylinder (30) is slidably sleeved on the two guide rods (29), the two cylinders (30) are fixedly connected by a connecting plate (31), the center of the top surface of the connecting plate (31) A first hydraulic cylinder (32) is fixedly installed at the connecting plate (31), the telescopic end of the first hydraulic cylinder (32) penetrates the connecting plate (31) and is fixed with a Z-shaped connecting plate (33), a second hydraulic cylinder (38) is fixedly installed on the side wall of one of the trapezoidal plates (28), the telescopic end of the second hydraulic cylinder (38) penetrates the trapezoidal plate (28) and is fixedly connected to the Z-shaped connecting plate (33), two guide slide bars (34) are symmetrically arranged through the connecting plate (31), the guide slide bars (34) are slidably connected to the connecting plate (31), the bottom end of the guide slide bar (34) is fixedly connected to the Z-shaped connecting plate (33), and the two Z-shaped connecting plates (33) are connected to each other. An arc-shaped pressing plate (35) is provided between the two Z-shaped shells (B), and the two sides of the arc-shaped pressing plate (35) are fixedly connected to the two Z-shaped connecting plates (33) through vertical rods (36). The inner arc surface diameter of the arc-shaped pressing plate (35) is matched with the outer arc surface diameter of the n-shaped shell (B). The outer arc surface of the arc-shaped pressing plate (35) is provided with a third welding reserved opening (37) for welding two adjacent n-shaped shells (B). An arc-shaped connecting plate (39) is fixed on the side end surface of the arc-shaped pressing plate (35). The inner arc surface of the arc-shaped connecting plate (39) is aligned with the inner arc surface of the arc-shaped pressing plate (35), and a third welding platform (40) is fixed on the side end surface of the arc-shaped connecting plate (39).

2. The ultra-high-speed magnetic levitation low-vacuum pipeline welding equipment according to claim 1 is characterized in that: The second welding platform (25) is L-shaped, a second step (26) of the upper second welding platform (25) is fixed to one end of the second welding platform (25), and a first guardrail (27) is fixed to the edge of the top surface of the second welding platform (25).

3. The ultra-high-speed magnetic levitation low-vacuum pipeline welding equipment according to claim 1 is characterized in that: The third welding platform (40) has an arc-shaped protrusion in the middle, and a second guardrail (41) is fixedly provided at the edge of the top surface of the third welding platform (40). Climbing ladders (42) for climbing onto the third welding platform (40) are respectively fixedly provided at both ends of the third welding platform (40), and an arc-shaped anti-fall frame (43) is fixedly provided on the side wall of the climbing ladder (42).

4. The ultra-high-speed magnetic levitation low-vacuum pipeline welding equipment according to claim 1 is characterized in that: The first hydraulic cylinder (32) and the second hydraulic cylinder (38) are respectively connected to an external hydraulic station pipeline via a conduit.

5. The ultra-high-speed magnetic levitation low-vacuum pipeline welding equipment according to claim 1 is characterized in that: The drive motor (7) is electrically connected to an external power source via a wire.

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