A shield tail block ground assembly and roundness adjustment tool for a shield machine

Abstract

The present invention relates to a shield tail block ground assembly and roundness adjustment tooling for a shield machine, comprising a bearing platform, a correction platform and a correction mechanism, wherein the bearing platform is arranged horizontally in a circular shape, and the bearing platform comprises a plurality of bearing beams arranged circumferentially; the correction platform is arranged circularly on the bearing platform, and the correction platform comprises a plurality of roundness flange plates arranged circumferentially, two adjacent roundness flange plates are bolted, and each roundness flange plate is arranged on the bearing beam in an arc shape and bolted to the bearing beam; the correction mechanism is arranged on any roundness flange plate of the correction platform, and the correction mechanism comprises a column connecting plate bolted to the roundness flange plate, a vertical column vertically arranged on the column connecting plate, and at least two oil cylinder assemblies horizontally arranged on the vertical column. The present invention can flexibly adjust the roundness of the shield tail by controlling the oil cylinder assembly, has high correction efficiency, can ensure the accuracy of assembly between each shield tail, and can be promoted and applied.

Description

Technical Field

[0001] The invention relates to the technical field of shield tail assembly, and in particular to a shield tail block ground assembly and roundness adjustment tool for a shield machine. Background Art

[0002] With the upgrading and reconstruction of urban infrastructure and the implementation of river-crossing and sea-crossing projects, large-diameter and ultra-large-diameter shield machines are applied to tunnel engineering projects. The shield tail welding is an important part of the shield machine assembly process. The shield tail of the shield machine is welded by several arc plates, which are usually assembled and welded piece by piece on the starting platform.

[0003] During the above-mentioned assembly and welding process, it is inevitable that the roundness of each shield tail arc plate is inconsistent, resulting in misaligned seams and low assembly accuracy. Therefore, it is necessary to measure and correct the roundness to ensure the accuracy of splicing of each shield tail arc plate and improve the construction quality.

[0004] The existing correction devices have complex structures and cumbersome operations. For example, the on-site correction device for the roundness of the shield tail of an ultra-large diameter shield machine disclosed in application publication number CN103706670A requires the construction of a concrete platform and a base to support the shield tail of the shield machine, which requires a large amount of construction. By adjusting the position of the nut, the arc plate of the shield tail of the shield machine is pulled relative to the transverse tie rod or the longitudinal tie rod, so that the arc plate of the shield tail of the shield machine forms a circle. At the same time, for the deviation of the local position of the arc plate of the shield tail of the shield machine, the arc plate of the shield tail of the shield machine is squeezed by a jack to achieve position correction, thereby achieving the correction of the roundness of the shield tail of the shield machine. The entire correction operation process is cumbersome, which greatly restricts the assembly efficiency. Summary of the invention

[0005] In order to solve the problems of complicated operation and low correction efficiency of existing correction devices, the present invention provides a shield tail block ground assembly and roundness adjustment tooling for a shield machine, which can facilitate the support of the shield tail of the shield machine and facilitate the adjustment of the roundness of each shield tail block, thereby improving the correction efficiency.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is:

[0007] A shield tail block ground assembly and roundness adjustment tool for a shield machine, comprising a bearing platform, a correction platform and a correction mechanism, wherein the bearing platform is horizontally arranged in a circular shape on a construction site, and the circular bearing platform can be well adapted to the circular shield tail of the shield machine, and the bearing platform comprises a plurality of bearing beams arranged in a circumferential direction, and the bearing beams are steel beams, which have sufficient strength and can effectively support the shield tail;

[0008] The correction platform is arranged on the bearing platform in a circular shape, and includes a plurality of roundness flange plates arranged in a circumferential direction. Two adjacent roundness flange plates are connected by bolts, which can facilitate the disassembly and assembly of the correction platform and multiple uses. Each roundness flange plate is arranged on the bearing beam in an arc shape and is connected with the bearing beam by bolts to ensure the fixation of the two.

[0009] The correction mechanism is arranged on any one of the roundness flange plates of the correction platform, and the correction mechanism can move 360° on the circular correction platform. The correction mechanism includes a column connecting plate bolted to the roundness flange plate, a vertical column vertically arranged on the column connecting plate, and at least two cylinder assemblies horizontally arranged on the vertical column;

[0010] Each of the oil cylinder components comprises an adapter seat, a base and a telescopic oil cylinder which are connected in sequence.

[0011] Furthermore, the load-bearing beam includes a connecting beam and seats bolted to both ends of the connecting beam; the connecting beam includes a beam body and beam plates welded to both ends of the beam body, and the seat includes a seat body and seat plates welded to both ends of the seat body.

[0012] Furthermore, the beam body is an I-beam structure, which is arranged horizontally, and the seat body is an I-beam structure, which is arranged vertically; the beam plate is connected to the seat body by bolts, which facilitates the installation and fixation of the connecting beam and the seat.

[0013] Furthermore, the roundness flange plate includes an arc-shaped plate body and connecting blocks arranged at both ends of the plate body. A plurality of connecting holes are arranged at intervals on the plate body, and the connecting blocks of two adjacent plate bodies are bolted to facilitate the installation of multiple roundness flange plates.

[0014] Furthermore, a plurality of vertical holes are provided on the load-bearing beam, and the connecting holes are connected with the vertical hole bolts to install the roundness flange plate and the load-bearing beam.

[0015] Furthermore, the column connecting plate is an arc-shaped plate and has the same curvature as the plate body. The column connecting plate is bolted to any two groups of connecting holes to install the roundness flange plate. The column connecting plate can be installed at any position on the correction platform.

[0016] Furthermore, the vertical column is an I-beam structure, and the vertical column is welded on the column connecting plate; a plurality of groups of transverse holes are opened on one side of the vertical column, and the transverse holes are distributed on the vertical column from top to bottom, and the cylinder assembly is connected with the transverse hole bolts to facilitate the installation and disassembly of the two.

[0017] Furthermore, the adapter and the base are both I-beam structures, the adapter is connected to any of the transverse hole bolts, the adapter is connected to the base bolts, the telescopic cylinder is fixedly arranged on the base, and the arrangement direction of the telescopic cylinder is perpendicular to the arrangement direction of the vertical column.

[0018] Through the above technical solution, the beneficial effects of the present invention are:

[0019] The present invention has a reasonable structural design, and the bearing platform, correction platform and correction mechanism are all modularly designed, which is convenient for assembly and disassembly. The bearing platform is composed of multiple bearing beams, which are connected by connecting cross beams and base bolts, which is convenient for moving, transporting, installing and disassembling; the correction platform is a circular structure assembled from multiple round flange plates, which is convenient for disassembly and transportation; the correction platform is covered with connecting holes, so that the correction mechanism can be installed at any position on the correction platform, and flexibly adapts to the adjustment of the shield tail in different positions.

[0020] The oil cylinder assembly of the present invention can be arranged at any height position of the vertical column, and the number of oil cylinder assemblies arranged is not limited, and sufficient thrust or pulling force can be provided to move the shield tail. The number of adapters arranged between the vertical column and the base is not limited, and the length of the oil cylinder assembly can be adjusted according to the diameter of the shield tail by increasing or decreasing the number of adapters to achieve the function of being suitable for shield tails of different diameters, and the roundness of the shield tail can be adjusted by extending or retracting the telescopic rod of the telescopic oil cylinder.

[0021] The present invention is easy to operate and can flexibly adjust the roundness of the shield tail by controlling the oil cylinder assembly, thereby achieving the purpose of correcting the shield tail. The correction efficiency is high, and at the same time, the accuracy of assembling between the shield tails is guaranteed, thereby improving the accuracy of shield tail welding, effectively ensuring the normal progress of tunnel construction, and having good application and promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The present invention is a schematic diagram of the overall structure of a shield tail segmented ground assembly and roundness adjustment tooling for a shield machine.

[0023] Figure 2 The invention discloses a schematic diagram of the installation of a roundness flange plate and a bearing beam of a shield tail segmented ground assembly and roundness adjustment tooling for a shield machine.

[0024] Figure 3 The present invention is a schematic diagram of a correction mechanism for ground assembly of shield tail segments of a shield machine and a roundness adjustment tool.

[0025] Figure 4 The present invention is a schematic diagram of assembling multiple adapter seats of a shield tail segmented ground assembly and roundness adjustment tooling for a shield machine.

[0026] Figure 5 The present invention is a schematic diagram of the shield tail roundness correction state of a shield tail segmented ground assembly and roundness adjustment tooling for a shield machine.

[0027] Figure 6 The present invention is a schematic diagram of a shield tail segmented ground assembly and roundness adjustment tooling for a shield machine in which a telescopic cylinder is pulling back the shield tail.

[0028] The numbers in the accompanying drawings are: 1 is a load-bearing beam, 11 is a connecting crossbeam, 111 is a beam body, 112 is a beam plate, 12 is a seat, 121 is a seat body, 122 is a seat plate, 2 is a roundness flange plate, 21 is a plate body, 22 is a connecting block, 3 is a column connecting plate, 4 is a vertical column, 5 is an adapter seat, 6 is a base, 7 is a telescopic cylinder, 8 is a connecting hole, 9 is a vertical hole, 10 is a horizontal hole, 13 is a pull ear, and 14 is a shield tail. DETAILED DESCRIPTION

[0029] The specific implementation of the present invention is described in detail below with reference to the accompanying drawings:

[0030] like Figure 1 to Figure 6 As shown, a tool for ground assembly and roundness adjustment of shield tail blocks of a shield machine includes a bearing platform, a correction platform and a correction mechanism. The bearing platform is used to support the shield tail 14 of the shield machine. The correction platform is installed on the bearing platform. The correction mechanism can be installed at any position of the correction platform. The roundness of the shield tail 14 can be adjusted by the correction mechanism to ensure the accuracy of splicing and assembly of each shield tail 14.

[0031] In this embodiment, the bearing platform is horizontally arranged in a circular shape at the construction site, and the bearing platform includes a plurality of bearing beams 1 arranged in a circumferential direction.

[0032] Each of the bearing beams 1 includes a connecting crossbeam 11 and a stand 12 detachably arranged at both ends of the connecting crossbeam 11. Specifically, the connecting crossbeam 11 includes a beam body 111 and a beam plate 112 welded at both ends of the beam body 111. The beam body 111 is an I-beam structure, and the beam body 111 is arranged horizontally. The stand 12 includes a seat body 121 and a seat plate 122 welded at both ends of the seat body 121. The seat body 121 is an I-beam structure, and the seat body 121 is arranged vertically.

[0033] The beam plate 112 is connected to the seat body 121 by bolts, thereby achieving installation and fixation of the connecting beam 11 and the seat 12.

[0034] In this embodiment, the correction platform is arranged in a circular shape on the supporting platform, and the correction platform includes a plurality of roundness flange plates 2 arranged circumferentially, and two adjacent roundness flange plates 2 are connected by bolts.

[0035] The roundness flange plate 2 includes an arc-shaped plate body 21 and connection blocks 22 arranged at both ends of the plate body 21. The connection blocks 22 of two adjacent plate bodies 21 are bolted to connect multiple roundness flange plates 2 into a circular whole.

[0036] Each of the roundness flange plates 2 is arranged on the load-bearing beam 1 in an arc shape and is connected to the load-bearing beam 1 with bolts, so that the roundness flange plate 2 and the load-bearing beam 1 can be installed and fixed.

[0037] Specifically, the plate body 21 is provided with a plurality of connection holes 8 at intervals, the load-bearing beam 1 is provided with a plurality of vertical holes 9 arranged on the beam body 111 , and the connection holes 8 are bolted to the vertical holes 9 to install the roundness flange plate 2 and the load-bearing beam 1 .

[0038] In this embodiment, the correction mechanism is arranged on any one of the roundness flange plates 2 of the correction platform, and the correction mechanism includes a column connecting plate 3 bolted to the roundness flange plate 2, a vertical column 4 vertically arranged on the column connecting plate 3, and at least two cylinder assemblies horizontally arranged on the vertical column 4.

[0039] The column connecting plate 3 is an arc-shaped plate and has the same arc as the plate body 21 . The column connecting plate 3 is bolted to any two groups of connecting holes 8 , so that the correction mechanism and the roundness flange plate 2 can be installed through the column connecting plate 3 .

[0040] The vertical column 4 is an I-beam structure, and the vertical column 4 is welded to the column connecting plate 3. A plurality of groups of transverse holes 10 are opened on one side of the vertical column 4, and the transverse holes 10 are distributed on the vertical column 4 from top to bottom. The cylinder assembly is bolted to the transverse holes 10, so that the cylinder assembly can be installed with the vertical column 4.

[0041] Each of the oil cylinder assemblies comprises an adapter 5, a base 6 and a telescopic oil cylinder 7 which are connected in sequence. The adapter 5 and the base 6 are both I-beam structures, the adapter 5 is bolted to any of the transverse holes 10, the adapter 5 is bolted to the base 6, the telescopic oil cylinder 7 is fixedly arranged on the base 6, and the arrangement direction of the telescopic oil cylinder 7 is perpendicular to the arrangement direction of the vertical column 4.

[0042] The working process of the present invention is as follows: first assemble the bearing platform at the construction site, place the bearing beam 1 on the ground, and use expansion bolts to connect the seat plate 122 to fix the bearing beam 1 to the ground; then install the correction platform on the bearing platform, connect the two adjacent roundness flange plates 2 with bolts, and connect the roundness flange plates 2 with the connecting cross beam 11 with bolts; then connect the column connecting plate 3 with the roundness flange plate 2 at any position with bolts; finally, connect the cylinder assembly with the vertical column 4 with bolts, and connect the telescopic cylinder 7 with an external hydraulic pump to provide power for the telescopic cylinder 7.

[0043] A plurality of shield tails 14 are hoisted onto a bearing platform in a circular shape by hoisting equipment, and the shield tails 14 are supported by the bearing beam 1. After the hoisting is completed, the plurality of shield tails 14 are erected on the bearing platform and spliced ​​into a full circle.

[0044] The roundness of different points of each shield tail 14 is measured by a measuring instrument, and the measurement results of each point are compared with the roundness design requirements of the shield tail 14. There are three types of comparison results: the first is that the measurement results meet the design requirements, the second is that the measurement results are greater than the design requirements, and the third result is that the measurement results are less than the design requirements.

[0045] For points that meet the design requirements, no processing is required.

[0046] For points smaller than the design requirements, the correction mechanism is moved to the roundness flange plate 2 corresponding to the point and installed thereon, and the telescopic cylinder 7 is extended to push the point so that the point moves outward, and finally the point meets the roundness design requirements.

[0047] For points larger than the design requirements, the correction mechanism is also moved to the roundness flange plate 2 corresponding to the point and installed thereon, and a pull ear 13 is welded at the point. The pull ear 13 and the telescopic cylinder 7 are connected by a pin shaft. The telescopic cylinder 7 is retracted to pull the point back, so that the point moves inward, and finally the point meets the roundness design requirements, and the pull ear 13 at the point is cut off.

[0048] The present invention can adjust and correct the roundness of the shield tail 14 through the action of the telescopic oil cylinder 7, and the correction operation is convenient and quick; at the same time, different numbers of adapters 5 can be arranged according to the diameter of the shield tail 14 to increase or decrease the length of the oil cylinder assembly, which is suitable for the correction operation of shield tails 14 with different diameters and can be widely used.

[0049] The embodiments described above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made according to the structures, features and principles described in the patent scope of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A shield tail block ground assembly and roundness adjustment tool for a shield machine, comprising a bearing platform, a correction platform and a correction mechanism, characterized in that: The bearing platform is arranged horizontally in a circular shape on the construction site, and comprises a plurality of bearing beams (1) arranged in a circumferential direction; the bearing beam (1) comprises a connecting cross beam (11) and seats (12) bolted to both ends of the connecting cross beam (11); The connecting crossbeam (11) comprises a beam body (111) and a beam plate (112) welded to both ends of the beam body (111); the stand (12) comprises a seat body (121) and a seat plate (122) welded to both ends of the seat body (121); the beam body (111) is an I-beam structure, the beam body (111) is arranged horizontally, the seat body (121) is an I-beam structure, the seat body (121) is arranged vertically; the beam plate (112) is bolted to the seat body (121); The correction platform is arranged in a circular shape on the bearing platform, and comprises a plurality of roundness flange plates (2) arranged in a circumferential direction, two adjacent roundness flange plates (2) are connected by bolts, the roundness flange plates (2) comprise an arc-shaped plate body (21) and connecting blocks (22) arranged at both ends of the plate body (21), a plurality of groups of connecting holes (8) are arranged at intervals on the plate body (21), and the connecting blocks (22) of two adjacent plate bodies (21) are connected by bolts; Each of the roundness flange plates (2) is arranged in an arc shape on the load-bearing beam (1) and is bolted to the load-bearing beam (1); a plurality of vertical holes (9) are provided on the load-bearing beam (1); the connection holes (8) are bolted to the vertical holes (9) to mount the roundness flange plate (2) and the load-bearing beam (1); The correction mechanism is arranged on any one of the roundness flange plates (2) of the correction platform, and comprises a column connecting plate (3) bolted to the roundness flange plate (2), a vertical column (4) vertically arranged on the column connecting plate (3), and at least two cylinder assemblies horizontally arranged on the vertical column (4); A plurality of groups of transverse holes (10) are formed on one side of the vertical column (4), the transverse holes (10) are distributed vertically on the vertical column (4), the cylinder assemblies are bolted to the transverse holes (10), and each cylinder assembly comprises an adapter seat (5), a base (6) and a telescopic cylinder (7) which are connected in sequence; The adapter (5) and the base (6) are both I-beam structures. The adapter (5) is bolted to any of the transverse holes (10). The adapter (5) and the base (6) are bolted to each other. The telescopic cylinder (7) is fixedly mounted on the base (6). The arrangement direction of the telescopic cylinder (7) is perpendicular to the arrangement direction of the vertical column (4).

2. The shield tail block ground assembly and roundness adjustment tooling of a shield machine according to claim 1 is characterized in that: The column connecting plate (3) is an arc-shaped plate and has the same arc as the plate body (21). The column connecting plate (3) is bolted to any two groups of connecting holes (8) to install the round flange plate (2).

3. The shield tail block ground assembly and roundness adjustment tooling of a shield machine according to claim 1 is characterized in that: The vertical column (4) is an I-beam structure, and the vertical column (4) is welded to the column connecting plate (3).

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