Main frame of caisson-type vertical shaft tunneling machine and its manufacturing method

Abstract

This application discloses a method for manufacturing the main chamber frame of a caisson-type vertical shaft tunneling machine. This method employs parallel manufacturing processes: rolling the blank inner cylinder plate into a circle to obtain the inner cylinder, simultaneously manufacturing a leveling gear chamber assembly, a maintenance door assembly, and a rounding fixture; erecting the inner cylinder on supporting columns, adjusting its horizontal and vertical positions, and assembling the gear chamber assembly and rounding fixture into the inner cylinder, securing them with tack welding; assembling the leveled rear flange to the end of the inner cylinder and securing it with tack welding; assembling the outer arc layer plate and stiffening plate structure to the outer circle of the inner cylinder and securing them with tack welding; and assembling the maintenance door assembly into the connecting notch and securing it with tack welding. The technical solution disclosed in this application simplifies the structure of the main chamber frame of the tunneling machine, reduces production difficulty, and improves manufacturing efficiency. This application also provides a main chamber frame for a caisson-type vertical shaft tunneling machine, which also possesses the above-mentioned technical effects.

Description

Technical Field

[0001] This application relates to the field of shaft tunneling technology, and more specifically, to a technical solution for manufacturing a main chamber frame of a caisson-type shaft tunneling machine; this application also relates to a technical solution for a main chamber frame of a caisson-type shaft tunneling machine. Background Technology

[0002] At present, the manufacturing level of tunnel boring machines has reached the international leading level, which can well meet the needs of horizontal engineering construction in underground space. However, underground engineering construction is not limited to horizontal engineering construction. Vertical engineering construction has been increasing year by year. In order to meet the needs of vertical engineering construction, caisson-type vertical shaft tunneling machine construction equipment has been invented. The main frame of the caisson-type vertical shaft tunneling machine is one of the most important main structures. Its manufacturing plays a crucial role in ensuring that the caisson-type vertical shaft tunneling machine can work normally.

[0003] The main frame is immersed in mud and water throughout the entire construction process. The deeper the shaft is excavated, the greater the mud and water pressure on the entire frame. At present, there is also a need to excavate the shaft to a greater depth. At the same time, the main frame supports the drive equipment and serves as a connection and transition for water pressure pipelines, cables, hydraulic pipelines, grease pipelines, etc. In addition, the milling device and the support legs on the inner wall of the shaft support the weight of the entire equipment. Therefore, the manufacturing process of the main frame is very important to the quality of the entire equipment and the stable construction.

[0004] In the current technology, the design and manufacturing of caisson-type vertical shaft tunneling machines are in their initial stages. Although their manufacturing mainly relies on welding technology, the production process is not yet perfect and the manufacturing process is relatively chaotic.

[0005] Therefore, how to provide a main frame for a caisson-type vertical shaft tunneling machine that simplifies the structure of the main frame, reduces production difficulty, and improves manufacturing efficiency has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] To address the aforementioned technical problems, this application provides a method for manufacturing the main frame of a caisson-type vertical shaft tunneling machine, which simplifies the structure of the main frame, reduces production difficulty, and improves manufacturing efficiency.

[0007] The technical solution provided in this application is as follows:

[0008] This invention provides a technical solution for manufacturing a main frame of a caisson-type vertical shaft tunneling machine. The method includes: acquiring production data for all components of the main frame of the caisson-type vertical shaft tunneling machine; cutting all components of the main frame according to the production data; using parallel manufacturing processes, rolling the cut inner cylinder plate into a circle to obtain the inner cylinder, while simultaneously manufacturing a leveling gear chamber assembly, a maintenance door assembly, and a rounding fixture; erecting the inner cylinder on a support column, adjusting the horizontal and vertical states of the inner cylinder, assembling the gear chamber assembly and the rounding fixture into the inner cylinder, and fixing them with tack welding; assembling the leveled rear flange to the end of the inner cylinder and fixing it with tack welding. Position welding is used to fix the connection; the first outer arc layer plate, the second outer arc layer plate, the first stiffening plate structure, and the second stiffening plate structure are assembled to the outer circle of the inner cylinder and fixed with position welding; according to the production data, the assembly notch of the maintenance door assembly is marked on the inner cylinder, the connection notch is cut according to the mark, the maintenance door assembly is assembled into the connection notch and fixed with position welding; the weld connecting the maintenance door assembly to the inner cylinder and the stiffening plate is completed; the support leg flange is assembled in parallel while assembling the maintenance door assembly; the inner cylinder is rotated 180° as a whole, the weld that was originally in the overhead welding state is rotated to the flat welding state, and the remaining unfinished welds are completed; the outer arc sealing plate is assembled to the outer circle of the main compartment frame and fixed with position welding.

[0009] Furthermore, in a preferred embodiment of the present invention, the method further includes: adjusting the beveling data and assembly center assembly data based on the deformation of the gear chamber assembly, maintenance door assembly, and roundness-preserving tooling during the manufacturing process to ensure the accuracy of the overall assembly connection.

[0010] Furthermore, in a preferred embodiment of the present invention, the method for assembling the outrigger flange includes: marking and positioning before assembly, inspecting according to the relevant requirements and process requirements of the drawings after assembly, and welding and fixing the outrigger flange after the inspection is qualified.

[0011] Furthermore, in a preferred embodiment of the present invention, before the outer arc plate is assembled to the outer circle of the main compartment frame, the weld seams inside the outer arc plate are inspected to ensure the welding quality inside the outer arc plate.

[0012] Furthermore, in a preferred embodiment of the present invention, the method further includes: inspecting each assembled component according to the drawing requirements and process allowances, and adjusting any non-compliance until it meets the requirements; performing overall root pass welding on the assembled components, and then performing symmetrical welding in layers and passes after the root pass welding is completed; after all welding is completed, performing dimensional and weld inspection on the entire main frame; performing annealing heat treatment on the main frame to eliminate welding internal stress, and shot blasting to remove slag from the surface; performing overall machining of the main frame by scribing and turning the machining process; and completing the manufacturing process of the main frame.

[0013] This application also provides a technical solution for the main chamber frame of a caisson-type vertical shaft tunneling machine, wherein the main chamber frame is manufactured by the above-described manufacturing method; the main chamber frame includes: an inner cylinder; a rounding fixture disposed at one end of the inner cylinder; the rounding fixture is used to support and maintain the cylindrical state of the inner cylinder; a gear chamber assembly disposed at the other end of the inner cylinder, the gear chamber assembly being used to install and connect an external gear assembly; a maintenance door assembly disposed on the inner cylinder; and a support leg flange disposed on the outer side of the inner cylinder, the support leg flange being located at one end of the gear chamber assembly.

[0014] Furthermore, in a preferred embodiment of the present invention, a rear flange is provided on the end face of the inner cylinder near the rounding tool, the rear flange being used to connect to an external device; a first outer arc layer plate and a second outer arc layer plate are provided on the outer side of the inner cylinder; the second outer arc layer plate is located at the end of the inner cylinder near the gear chamber assembly; the first outer arc layer plate is located between the second outer arc layer plate and the rear flange; an outer arc sealing plate is provided at the outer edge of the first outer arc layer plate and the second outer arc layer plate, and multiple outer arc sealing plates are connected end to end to form an outer arc cylinder.

[0015] Furthermore, in a preferred embodiment of the present invention, the support flange includes: a first cover plate, the first cover plate and the first outer arc layer plate being an integral structure; a second cover plate, the second cover plate and the second outer arc layer plate being an integral structure; and a support flange assembly covering the space between the first cover plate and the second cover plate; the first cover plate, the second cover plate and the support flange assembly constitute the external shape structure of the support flange protruding from the outer arc cylinder.

[0016] Furthermore, in a preferred embodiment of the present invention, a first stiffening plate structure is provided on the outer side wall of the inner cylinder, the first stiffening plate structure being arranged in a ring around the axis of the inner cylinder; one end of the first stiffening plate structure is connected to the rear flange, and the other end of the first stiffening plate structure is connected to the second outer arc layer plate.

[0017] Furthermore, in a preferred embodiment of the present invention, a second stiffening plate structure is provided on the outer side wall of the inner cylinder, one end of the second stiffening plate structure is connected to the rear flange, and the other end of the second stiffening plate structure is connected to the first cover plate.

[0018] Furthermore, in a preferred embodiment of the present invention, the support flange further includes: a support stiffener plate, the support stiffener plate being disposed inside the area enclosed by the first cover plate, the second cover plate, the support cover plate assembly, and the inner cylinder, the support stiffener plate having a rectangular structure, and the edges of the support stiffener plate being respectively connected and fixed to the first cover plate, the second cover plate, the support cover plate assembly, and the inner cylinder; the support stiffener plate being provided with a perforated weight-reducing structure.

[0019] Furthermore, in a preferred embodiment of the present invention, the roundness-maintaining fixture includes an inner ring plate, an outer ring plate, and a supporting round steel pipe; the inner ring plate is located inside the outer ring plate, and the supporting round steel pipe is connected between the inner ring plate and the outer ring plate; the outer wall of the outer ring plate abuts against the inner wall of the inner cylinder.

[0020] Furthermore, in a preferred embodiment of the invention, the maintenance door assembly is located between the roundness-maintaining fixture and the gear chamber assembly; the maintenance door assembly connects the interior of the inner cylinder with the exterior.

[0021] Compared with existing technologies, the technical solution of the main frame of a caisson-type vertical shaft tunneling machine provided by this invention first levels or rolls all parts according to production data, and then uses a parallel manufacturing method to simultaneously manufacture the gear chamber assembly, maintenance door assembly, and rounding fixture, thereby saving manufacturing time; then the gear chamber assembly and rounding fixture are assembled into the inner cylinder and welded for positioning, improving the installation efficiency of the process; based on this, the rear flange plate, outer arc layer plate, and stiffening plate can be quickly assembled, positioned, and welded for fixation, further improving installation efficiency and welding quality; then, through overall root pass welding, the final welding and fixation of the main components is completed; the maintenance door assembly is finally connected and assembled through welding notches; further, the entire inner cylinder is flipped over and then subjected to final overall welding to complete the welding closure of all welds; finally, all welds are inspected to ensure welding quality. The technical solution provided by this application can standardize the production process, reduce production difficulty, and improve manufacturing efficiency. In addition, this application also relates to a technical solution for a main frame, which also has the above-mentioned beneficial effects. Attached Figure Description

[0022] 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 some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1A flowchart illustrating the manufacturing method of the main frame of a caisson-type vertical shaft tunneling machine according to an embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the synchronous manufacturing node of the manufacturing method provided in the embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the overall structure of the main frame of the caisson-type vertical shaft tunneling machine provided in an embodiment of the present invention;

[0026] Figure 4 This is a three-dimensional sectional view of the internal structure of the main frame of the caisson-type vertical shaft tunneling machine provided in an embodiment of the present invention;

[0027] Figure 5 A schematic diagram of the inner cylinder and support flange provided in an embodiment of the present invention;

[0028] Figure 6 This is a sectional view of the main frame of the caisson-type vertical shaft tunneling machine provided in an embodiment of the present invention;

[0029] Figure 7 A top view of the main frame of the caisson-type vertical shaft tunneling machine provided in this embodiment of the invention;

[0030] Figure 8 A schematic diagram of the roundness-preserving tooling structure provided in this embodiment of the invention;

[0031] Figure 9 A schematic diagram of the gear chamber assembly structure provided in this embodiment of the invention;

[0032] Figure 10 A schematic diagram of the maintenance door assembly structure provided in an embodiment of the present invention. Detailed Implementation

[0033] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the 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.

[0034] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0035] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "first", "second", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" or "several" means two or more, unless otherwise explicitly specified.

[0037] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0038] like Figures 1 to 2As shown, this embodiment of the invention also provides a technical solution for manufacturing a main frame of a caisson-type vertical shaft tunneling machine. The method includes: acquiring production data for all components of the main frame of the caisson-type vertical shaft tunneling machine; cutting all components of the main frame of the caisson-type vertical shaft tunneling machine according to the production data; using parallel manufacturing processes, rolling the cut inner cylinder plate into a circle to obtain an inner cylinder 1, while simultaneously manufacturing a leveling gear chamber assembly 3, a maintenance door assembly 4, and a roundness-preserving fixture 2; erecting the inner cylinder 1 on a support column, adjusting the horizontal and vertical states of the inner cylinder 1, assembling the gear chamber assembly 3 and the roundness-preserving fixture 2 into the inner cylinder 1 respectively, and connecting and fixing them with tack welding; assembling the leveled rear flange 101 to the end of the inner cylinder 1, and fixing it with tack welding. Welding connection and fixation; Assemble the first outer arc layer plate 102, the second outer arc layer plate 103, the first stiffening plate structure 105, and the second stiffening plate structure 106 to the outer circle of the inner cylinder 1, and fix them with tack welding; Mark the assembly notch of the maintenance door assembly 4 on the inner cylinder 1 according to the production data, cut the connection notch according to the mark, assemble the maintenance door assembly 4 into the connection notch, and fix it with tack welding; Complete the weld connecting the maintenance door assembly 4 to the inner cylinder 1 and the stiffening plate; Simultaneously assemble the support leg flange 5 while assembling the maintenance door assembly 4; Rotate the inner cylinder 1 as a whole by 180°, rotate the weld that was originally in the overhead welding state to the flat welding state, and complete the remaining unfinished welds; Assemble the outer arc sealing plate to the outer circle of the main compartment frame, and fix it with tack welding.

[0039] It should be noted that in the manufacturing method provided in this application, all parts are first leveled or rolled according to production data. Then, a parallel manufacturing method is adopted to simultaneously manufacture the gear chamber assembly, maintenance door assembly, and rounding fixture, thereby saving manufacturing time. Next, the gear chamber assembly and rounding fixture are assembled into the inner cylinder and welded for positioning, improving installation efficiency. Based on this, the rear flange plate, outer arc plate, and stiffening plate can be quickly assembled, positioned, and welded for fixation, further improving installation efficiency and welding quality. Then, through overall root pass welding, the final welding and fixation of the main components is completed. The maintenance door assembly is finally connected and assembled through welding notches. Finally, the entire inner cylinder is flipped over for final overall welding to close all weld seams. Finally, all weld seams are inspected to ensure welding quality. The technical solution provided in this application can standardize the production process, reduce production difficulty, and improve manufacturing efficiency.

[0040] Specifically, in a specific embodiment of the present invention, the beveling data and assembly center assembly data are adjusted according to the deformation of the gear chamber assembly 3, maintenance door assembly 4 and roundness maintenance fixture 2 during the manufacturing process to ensure the accuracy of the overall assembly connection.

[0041] Specifically, in a specific embodiment of the present invention, the method for assembling the support flange 5 includes: marking and positioning before assembly, inspecting according to the relevant requirements and process requirements of the drawings after assembly, and welding and fixing the support flange 5 after the inspection is qualified.

[0042] Specifically, in a specific embodiment of the present invention, before the outer arc plate is assembled to the outer circle of the main compartment frame, the weld seams inside the outer arc plate are inspected to ensure the welding quality inside the outer arc plate.

[0043] Specifically, in the specific embodiments of the present invention, each assembled component is inspected according to the drawing requirements and process allowances. If any non-compliance is found, adjustments are made until the requirements are met. The assembled components are subjected to overall root pass welding, and after the root pass welding is completed, symmetrical welding is performed in layers and passes. After all welding is completed, the dimensions and welds of the entire main cabin frame are inspected. The main cabin frame is subjected to annealing heat treatment to eliminate welding internal stress, and shot blasting is performed to remove slag from the surface. The main cabin frame is machined as a whole through scribing and turning. The manufacturing process of the main cabin frame is completed.

[0044] It should be noted that,

[0045] After completing the above work, each assembled component is inspected according to the drawing requirements and process allowances. If any non-compliance is found, adjustments are made until the requirements are met. This achieves process control of the overall assembly, allows for early adjustment and resolution of dimensional issues, and improves the overall quality of the main frame.

[0046] It should be noted that after the remaining components are assembled and welded, the entire assembly undergoes annealing heat treatment to eliminate welding stress and the welds are cleaned of slag, thus completing the manufacturing of the main frame of the tunneling machine. The technical solution provided in this application standardizes the production process of the main frame, reduces production time, and improves production efficiency and quality.

[0047] like Figures 3 to 10 As shown in the embodiment of this application, the main frame of the caisson-type vertical shaft tunneling machine includes: an inner cylinder 1; a rounding fixture 2 disposed at one end of the inner cylinder 1, the rounding fixture 2 being used to support and maintain the cylindrical state of the inner cylinder 1; a gear chamber assembly 3 disposed at the other end of the inner cylinder 1, the gear chamber assembly 3 being used to install and connect an external gear assembly; a maintenance door assembly 4 disposed on the inner cylinder 1; and a support leg flange 5 disposed on the outside of the inner cylinder 1, the support leg flange 5 being located at one end of the gear chamber assembly 3.

[0048] Compared with the prior art, the present invention provides a technical solution for the main chamber frame of a caisson-type vertical shaft tunneling machine. The main chamber frame includes: an inner cylinder 1; a rounding fixture 2 disposed at one end of the inner cylinder 1, the rounding fixture 2 being used to support and maintain the cylindrical state of the inner cylinder 1; a gear chamber assembly 3 disposed at the other end of the inner cylinder 1, the gear chamber assembly 3 being used to install and connect an external gear assembly; a maintenance door assembly 4 disposed on the inner cylinder 1; and a support leg flange 5 disposed on the outside of the inner cylinder 1, the support leg flange 5 being located at one end of the gear chamber assembly 3. In the technical solution provided by this application, the stability of the rounding cylinder is improved by adding a rounding fixture to the inner cylinder; the gear chamber assembly serves as the foundation for installing the tunneling transmission mechanism; the maintenance door assembly allows for inspection and maintenance of the internal space of the main chamber frame; and the support leg flange allows for connection to the external fixed structure of the shaft. In summary, the main chamber frame provided by this application has a simple overall structure, reducing production costs and complexity. The technical solution provided by this application simplifies the structure of the main chamber frame of the tunneling machine, reduces production difficulty, and improves manufacturing efficiency.

[0049] Specifically, in a specific embodiment of the present invention, a rear flange 101 is provided on the end face of the inner cylinder 1 near the rounding tool 2, and the rear flange 101 is used to connect to an external device; a first outer arc layer plate 102 and a second outer arc layer plate 103 are provided on the outer side of the inner cylinder 1, the second outer arc layer plate 103 is located at the end of the inner cylinder 1 near the gear chamber assembly 3, and the first outer arc layer plate 102 is located between the second outer arc layer plate 103 and the rear flange 101; an outer arc sealing plate 104 is provided at the outer edge of the first outer arc layer plate 102 and the second outer arc layer plate 103, and multiple outer arc sealing plates 104 are connected end to end to form an outer arc cylinder.

[0050] It should be noted that the rear flange can be securely connected to external devices; the first and second outer arc-shaped layers can effectively improve the stability of the entire main frame; and the outer arc-shaped sealing plate can provide some protection and strengthen the internal structure it encloses.

[0051] Specifically, in a specific embodiment of the present invention, the support flange 5 includes: a first cover plate 501, which is an integral structure with the first outer arc layer plate 102; a second cover plate 502, which is an integral structure with the second outer arc layer plate 103; and a support flange assembly 503 covering the space between the first cover plate 501 and the second cover plate 502; the first cover plate 501, the second cover plate 502, and the support flange assembly 503 constitute the external structure of the support flange 5 protruding from the outer arc cylinder.

[0052] It should be noted that the outrigger flange is composed of the above-mentioned structure, realizing the basic support and connection function of the outrigger flange.

[0053] Specifically, in a specific embodiment of the present invention, a first stiffening plate structure 105 is provided on the outer side wall of the inner cylinder 1, and the first stiffening plate structure 105 is arranged in a ring around the axis of the inner cylinder 1; one end of the first stiffening plate structure 105 is connected to the rear flange 101, and the other end of the first stiffening plate structure 105 is connected to the second outer arc plate 103.

[0054] It should be noted that the structural stability of the main warehouse frame is enhanced by the first stiffening plate structure.

[0055] Specifically, in a specific embodiment of the present invention, a second stiffening plate structure 106 is provided on the outer side wall of the inner cylinder 1. One end of the second stiffening plate structure 106 is connected to the rear flange 101, and the other end of the second stiffening plate structure 106 is connected to the first cover plate 501.

[0056] It should be noted that the second stiffening plate structure can effectively improve the connection strength of the support flange; the connection hole structure on the second stiffening plate structure facilitates hoisting / lifting control.

[0057] Specifically, in a specific embodiment of the present invention, the support flange 5 further includes: a support stiffener plate 504, which is disposed inside the area enclosed by the first cover plate 501, the second cover plate 502, the support cover plate group 503, and the inner cylinder 1. The support stiffener plate 504 has a rectangular structure, and its edges are respectively connected and fixed to the first cover plate 501, the second cover plate 502, the support cover plate group 503, and the inner cylinder 1. The support stiffener plate 504 is provided with a perforated weight-reducing structure.

[0058] It should be noted that the structural strength of the support flange is further enhanced by the support leg stiffener plate.

[0059] Specifically, in a specific embodiment of the present invention, the roundness-maintaining fixture 2 includes an inner ring plate 201, an outer ring plate 202, and a supporting round steel pipe 203; the inner ring plate 201 is located inside the outer ring plate 202, and the supporting round steel pipe 203 is connected between the inner ring plate 201 and the outer ring plate 202; the outer wall of the outer ring plate 202 abuts against the inner wall of the inner cylinder 1.

[0060] It should be noted that the combination of the inner ring plate, the outer ring plate, and the supporting circular steel pipe creates a round-maintaining fixture with a certain strength, thus improving the round-maintaining support effect on the inner cylinder.

[0061] Specifically, in a specific embodiment of the present invention, the maintenance door assembly 4 is located between the roundness protection fixture 2 and the gear chamber assembly 3; the maintenance door assembly 4 connects the interior of the inner cylinder 1 with the exterior.

[0062] It should be added that,

[0063] To solve the above-mentioned technical problems, the present invention provides a manufacturing process for the main frame of a caisson-type vertical shaft tunneling machine, comprising the following steps:

[0064] 1. Cut all parts according to the drawings and the shrinkage allowance.

[0065] 2. Level or roll each part.

[0066] 3. This invention employs parallel manufacturing, simultaneously manufacturing the gear chamber assembly, maintenance door assembly, and roundness-maintaining fixture, saving manufacturing time. Furthermore, the beveling and assembly centers can be adjusted based on the deformation during manufacturing. The roundness-maintaining fixture consists of an outer ring plate, an inner ring plate, and supporting circular steel pipes.

[0067] 4. Place the inner cylinder on the support column, adjust its horizontal and vertical position, and assemble the gear chamber assembly and the roundness retaining fixture into the inner side of the cylinder, then fix them with tack welds.

[0068] 5. Assemble the rear flange plate to the end of the cylinder and fix it with tack welds.

[0069] 6. Assemble the outer arc-shaped layer plate and stiffening plate onto the outer circle of the cylinder, and fix them with tack welds.

[0070] 7. Inspect all assembled parts according to the drawing requirements and process allowances. If any parts do not meet the requirements, make adjustments until they do.

[0071] 8. Perform overall root pass welding on the assembled components. After the root pass welding is completed, perform symmetrical welding in layers and passes.

[0072] 9. Mark the maintenance door assembly notch on the inner cylinder according to the drawing requirements, cut the maintenance door assembly notch on the inner cylinder, assemble the maintenance door assembly into the corresponding notch, and fix it with tack welding. Complete the welding of the maintenance door assembly to the inner cylinder and the stiffening plate.

[0073] 10. Assemble the maintenance door components and the support flanges in parallel. Mark the positioning lines before assembly. After assembly, test according to the relevant requirements and process requirements of the drawings. Weld after passing the test.

[0074] 11. Turn over, rotate the previously welded cylinder body 180°, turn the weld that was originally in the overhead welding state to the flat welding state, and complete the remaining unfinished welds.

[0075] 12. The weld seams are inspected to effectively check that the weld quality meets the design requirements before sealing the outer arc plate.

[0076] 13. Assemble the outer arc sealing plate onto the outer circle of the main compartment frame and fix it with tack welding.

[0077] 14. After all welding is completed, the dimensions and welds of the entire main frame are inspected.

[0078] 15. Annealing heat treatment is performed on the main frame to eliminate welding internal stress, and shot blasting is performed to remove slag from the surface.

[0079] 16. Marking and machining: Perform overall machining on the main warehouse frame. Complete the manufacturing process of the main warehouse frame.

[0080] It should be further noted that the technical solution provided in this application has the following technical effects:

[0081] This invention utilizes roundness-preserving fixtures to effectively control the deformation of the main storage frame and ensure its external dimensions.

[0082] This invention employs the synchronous manufacturing of internal components in stages, which effectively saves manufacturing time, shortens the production cycle, and reduces costs.

[0083] This invention employs multi-node interleaved detection, effectively reducing quality risks.

[0084] This invention has the advantages of saving resources, reducing costs, and effectively controlling quality.

[0085] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for manufacturing the main frame of a caisson-type vertical shaft tunneling machine, characterized in that, Including the following steps: Obtain production data for all components of the main frame of the caisson-type vertical shaft tunneling machine; Based on production data, all components of the main frame of the caisson-type vertical shaft tunneling machine were cut into pieces; The parallel manufacturing process is adopted to roll the inner cylinder plate into a circle to obtain the inner cylinder (1), while manufacturing the leveling gear chamber assembly (3), the maintenance door assembly (4) and the roundness maintenance tooling (2). Place the inner cylinder (1) on the support column, adjust the horizontal and vertical state of the inner cylinder (1), and assemble the gear chamber assembly (3) and the roundness retention tool (2) into the inner side of the inner cylinder (1) respectively, and fix them with positioning welding; After the material is cut and leveled, the rear flange (101) is assembled to the end of the inner cylinder (1) and fixed with tack welding; The first outer arc plate (102), the second outer arc plate (103), the first stiffener structure (105), and the second stiffener structure (106) are assembled to the outer circle of the inner cylinder (1) and fixed by tack welding; According to the production data, mark the assembly notch of the maintenance door assembly (4) on the inner cylinder (1), cut the connection notch according to the mark, assemble the maintenance door assembly (4) into the connection notch, and fix it with tack weld; complete the weld connecting the maintenance door assembly (4) with the inner cylinder (1) and the stiffening plate. While assembling the maintenance door assembly (4), the support leg flange (5) is assembled in parallel. The inner cylinder (1) is rotated 180°, the weld that was originally in the overhead welding state is rotated to the flat welding state, and the remaining unfinished weld is completed. The outer arc sealing plate is assembled to the outer circle of the main compartment frame and fixed with tack welding.

2. The manufacturing method according to claim 1, characterized in that, The method also includes: Adjust the beveling data and assembly center data according to the deformation of the gear chamber assembly (3), maintenance door assembly (4) and rounding fixture (2) during the manufacturing process to ensure the accuracy of the overall assembly connection.

3. The manufacturing method according to claim 1, characterized in that, The method for assembling the support flange (5) includes: marking and positioning before assembly, inspecting according to the relevant requirements and process requirements of the drawings after assembly, and welding and fixing the support flange (5) after the inspection is qualified.

4. The manufacturing method according to claim 1, characterized in that, Before the outer arc plate is assembled to the outer circle of the main frame, the weld seams inside the outer arc plate are inspected to ensure the welding quality inside the outer arc plate.

5. The manufacturing method according to claim 1, characterized in that, The method also includes: inspecting each assembled component according to the drawing requirements and process allowances, and adjusting any non-compliance until it meets the requirements; performing overall root pass welding on the assembled components, followed by symmetrical layer-by-layer welding after the root pass welding is completed; after all welding is completed, performing dimensional and weld inspections on the entire main frame; performing annealing heat treatment on the main frame to eliminate welding internal stress, and shot blasting to remove slag from the surface; performing overall machining of the main frame through scribing and machining; and completing the manufacturing process of the main frame.

6. A main frame for a caisson-type vertical shaft tunneling machine, characterized in that, The main compartment frame is manufactured by the manufacturing method according to any one of claims 1 to 5; the main compartment frame includes: an inner cylinder (1); a rounding fixture (2) disposed at one end of the inner cylinder (1); the rounding fixture (2) is used to support and maintain the cylindrical state of the inner cylinder (1); a gear chamber assembly (3) disposed at the other end of the inner cylinder (1), the gear chamber assembly (3) is used to install and connect an external gear assembly; a maintenance door assembly (4) disposed on the inner cylinder (1); and a support leg flange (5) disposed on the outside of the inner cylinder (1), the support leg flange (5) being located at one end of the gear chamber assembly (3).

7. The main frame of the caisson-type vertical shaft tunneling machine according to claim 6, characterized in that, The inner cylinder (1) is provided with a rear flange (101) on the end face near the rounding tool (2), and the rear flange (101) is used to connect to an external device; a first outer arc plate (102) and a second outer arc plate (103) are provided on the outer side of the inner cylinder (1); the second outer arc plate (103) is located at the end of the inner cylinder (1) near the gear chamber assembly (3); the first outer arc plate (102) is located between the second outer arc plate (103) and the rear flange (101); an outer arc sealing plate (104) is provided at the outer edge of the first outer arc plate (102) and the second outer arc plate (103), and multiple outer arc sealing plates (104) are connected end to end to form an outer arc cylinder; and / or The support flange (5) includes: a first cover plate (501), which is an integral structure with the first outer arc layer plate (102); a second cover plate (502), which is an integral structure with the second outer arc layer plate (103); and a support flange assembly (503) covering the space between the first cover plate (501) and the second cover plate (502); the first cover plate (501), the second cover plate (502) and the support flange assembly (503) together form the external structure of the support flange (5) protruding from the outer arc cylinder.

8. The main frame of the caisson-type vertical shaft tunneling machine according to claim 7, characterized in that, A first stiffening plate structure (105) is provided on the outer wall of the inner cylinder (1), and the first stiffening plate structure (105) is arranged in a ring around the axis of the inner cylinder (1); one end of the first stiffening plate structure (105) is connected to the rear flange (101), and the other end of the first stiffening plate structure (105) is connected to the second outer arc plate (103); and / or The inner cylinder (1) is provided with a second stiffening plate structure (106) on its outer side wall. One end of the second stiffening plate structure (106) is connected to the rear flange (101), and the other end of the second stiffening plate structure (106) is connected to the first cover plate (501).

9. The main frame of the caisson-type vertical shaft tunneling machine according to claim 7, characterized in that, The support flange (5) further includes: a support stiffener plate (504), which is disposed inside the area enclosed by the first cover plate (501), the second cover plate (502), the support cover plate group (503), and the inner cylinder (1). The support stiffener plate (504) has a rectangular structure, and the edges of the support stiffener plate (504) are respectively connected and fixed to the first cover plate (501), the second cover plate (502), the support cover plate group (503), and the inner cylinder (1); the support stiffener plate (504) is provided with a perforated weight-reducing structure; and / or The roundness-maintaining fixture (2) includes an inner ring plate (201), an outer ring plate (202), and a supporting round steel pipe (203); the inner ring plate (201) is located inside the outer ring plate (202), and the supporting round steel pipe (203) is connected between the inner ring plate (201) and the outer ring plate (202); the outer wall of the outer ring plate (202) abuts against the inner wall of the inner cylinder (1).

10. The main frame of the caisson-type vertical shaft tunneling machine according to any one of claims 6 to 9, characterized in that, The maintenance door assembly (4) is located between the rounding fixture (2) and the gear chamber assembly (3); the maintenance door assembly (4) connects the interior and exterior of the inner cylinder (1).

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