Shield machine tail shield shell assembly tooling and method

Abstract

The present invention relates to the technical field of shield machine manufacturing, and specifically to a shield machine tail shield shell splicing tool, including a center ring plate, a plumb support frame and an adjustment assembly, the outer side of the center ring plate is connected to the shell support ring plate through a number of radiating support rods, the outer arc of the shell support ring plate is used as a reference for a plurality of arc segment tail shield shell blocks; the plumb support frame is fixedly connected to the upper end surface of the center ring plate, and a plumb that can pass through the center of the center ring plate is connected to the plumb support frame through a vertical line; the adjustment assembly is connected between the shell support ring plate and the tail shield shell block, and is used to adjust and limit the position of the tail shield shell block relative to the shell support ring plate; a shield machine tail shield shell splicing method, using the above-mentioned tooling for splicing. The present invention can be used for the splicing of a plurality of arc segment tail shield shell blocks, with high efficiency and high splicing quality, solving the technical problems of slow splicing speed, low efficiency and poor splicing accuracy of the tail shield shell in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of shield machine manufacturing, and in particular to a shield machine tail shield shell assembly tool and method. Background Art

[0002] The existing tail shield of the shield machine is a hollow shell structure, and is generally composed of multiple arc-segment tail shield shells welded in blocks. There is no reinforcement structure inside the tail shield shell. At the same time, the roundness of the tail shield shell is very important for the shield machine. Therefore, what form of assembly tooling is used to assemble the multiple arc-segment tail shield shells into a whole has a significant impact on the roundness of the tail shield shell. The existing method of assembling the tail shield shell using a pull rod method has a slow assembly speed, low efficiency and poor assembly accuracy. Therefore, it is urgent to find a new tail shield shell assembly tooling, that is, an assembly method, to solve the above technical problems. Summary of the invention

[0003] The purpose of the present invention is to provide a shield machine tail shield shell splicing tool and method in response to the above-mentioned problems and shortcomings, which can be used for splicing multiple arc segment tail shield shell blocks with high efficiency and high splicing quality, and solves the technical problems in the prior art of slow tail shield shell splicing speed, low efficiency and poor splicing accuracy.

[0004] In order to achieve the above-mentioned object of the invention, the technical solution of the present invention is:

[0005] A shield machine tail shield shell assembly tool, including a center ring plate, a plumb line support frame and an adjustment component, the outer side of the center ring plate is connected to the shell support ring plate through a plurality of radiating support rods, the outer arc of the shell support ring plate is used as a reference for a plurality of arc segment tail shield shell blocks; the plumb line support frame is fixedly connected to the upper end surface of the center ring plate, and a plumb line that can pass through the center of the center ring plate is connected to the plumb line support frame through a vertical line; the adjustment component is connected between the shell support ring plate and the tail shield shell block, and is used for adjusting and limiting the position of the tail shield shell block relative to the shell support ring plate.

[0006] Furthermore, in the above-mentioned shield machine tail shield shell assembly tooling, the adjustment assembly includes an adjustment block, a fixed block and an adjustment wedge block, the fixed block is fixedly connected to the upper end surface of the shell support ring plate, and a plurality of the adjustment blocks are distributed on the upper end surface of the shell support ring plate, the adjustment block is fixedly connected to the inner wall of the tail shield shell block, the adjustment block is an L-shaped adjustment block, including a transverse block and a vertical block, the transverse block cover is on the upper part of the fixed block, the fixed block is located between the tail shield shell block and the vertical block, and the adjustment wedge block is inserted in the The vertical block is inserted between the fixed block or between the tail shield shell block and the fixed block, and is used to adjust and limit the position of the tail shield shell block relative to the shell support ring plate; when the adjusting wedge block is gradually inserted between the vertical block and the fixed block, it is used to adjust the tail shield shell toward the center direction of the shell support ring plate, and to limit the position of the tail shield shell relative to the shell support ring plate; when the adjusting wedge block is gradually inserted between the tail shield shell block and the fixed block, it is used to adjust the tail shield shell block away from the center direction of the shell support ring plate.

[0007] Furthermore, in the above-mentioned shield machine tail shield shell assembly tooling, the outer diameter of the shell support ring plate is smaller than the process inner diameter of the tail shield shell.

[0008] Furthermore, in the above-mentioned shield machine tail shield shell assembly tooling, the outer diameter of the shell support ring plate is 2 mm smaller than the process inner diameter of the tail shield shell.

[0009] Furthermore, in the above-mentioned shield machine tail shield shell assembly tooling, the shell support ring plate is configured as an annular thin plate, the distance between its inner diameter and outer diameter is the width, and the distance between its upper end face and lower end face is the thickness.

[0010] Furthermore, in the above-mentioned shield machine tail shield shell assembly tooling, the plumb bob support frame is configured to be L-shaped.

[0011] A method for assembling points of a tail shield shell of a shield machine, comprising the following steps:

[0012] a. Level the assembly platform and draw the bottom pattern of the tail shield shell on the assembly platform;

[0013] b. Based on the bottom sample, assemble the first tail shield shell blocks, adjust the verticality and provide rigid support for it;

[0014] c. Taking the first tail shield shell block as the reference, assemble the tail shield shell assembly fixture of the shield machine described in any of the previous items, adjust the tail shield shell assembly fixture to make it concentric with the bottom sample, and fix it on the assembly platform, and make it close to one end of the positioning ring of the tail shield shell;

[0015] d. Use the outer arc of the shield machine tail shield shell assembly tooling as the upper reference and the bottom sample as the lower reference to assemble the adjacent tail shield shell blocks of the first tail shield shell block;

[0016] e. According to the center of the bottom sample, hang a vertical line on the plumb support frame to reflect the center of the circle;

[0017] f. Adjust the local roundness of the tail shield shell block by adjusting the components, and verify the roundness by measuring the radius of the tail shield shell block with a vertical line;

[0018] g. Temporarily fix the tail shield shell blocks to the shell support ring plate by adjusting the components;

[0019] h. Repeat steps d to g to sequentially assemble adjacent tail shield shell blocks;

[0020] i. Check the roundness of each tail shield shell segment by measuring the radius of each segment with a vertical line. After the roundness is qualified, use process steel plates to join the segments of the tail shield shell segment and weld them as a whole.

[0021] Furthermore, in the above-mentioned method for splicing points of a tail shield shell of a shield machine, the first tail shield shell segment to be spliced ​​in step b is a tail shield shell segment with the largest curvature in the tail shield shell.

[0022] Furthermore, in the above-mentioned method for assembling the tail shield shell of a shield machine, in the step c, the assembly tooling for the tail shield shell of the shield machine is supported on the assembly platform by a plurality of vertical support rods connected to the lower end surface of the shell support ring plate, and the vertical support rods are fixedly connected to the assembly platform.

[0023] Furthermore, in the above-mentioned method for splicing the tail shield shell of a tunnel boring machine, in the step c, the height of the splicing tooling for the tail shield shell of the tunnel boring machine from the splicing platform is 2 / 3 of the total length of the tail shield shell.

[0024] Beneficial effects of a shield machine tail shield shell assembly tool and method of the present invention:

[0025] The present invention can be used for splicing a plurality of arc segment tail shield shell segments. The outer arc of the shell support ring plate serves as a whole circle, which is convenient for providing an overall reference for a plurality of tail shield shell segments. At the same time, because personnel are required to adjust the shell position, the shell support ring plate can also be used as a walking platform. In addition, the shell support ring plate can be rigidly supported at a certain height, and can cooperate with the tail shield shell bottom sample to provide upper and lower references for the tail shield shell segments. The roundness of each tail shield shell segment can be verified through the vertical line on the center ring plate. The splicing efficiency is high and the splicing circle quality is high, which solves the technical problems of slow splicing speed, low efficiency and poor splicing accuracy of the tail shield shell in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1It is a schematic structural diagram of a shield machine tail shield shell assembly tooling according to an embodiment of the present invention.

[0027] Figure 2 yes Figure 1 AA cross-sectional structure schematic diagram.

[0028] Figure 3 yes Figure 1 Schematic diagram of the BB cross-sectional structure.

[0029] Figure 4 It is one of the structural schematic diagrams of the adjustment state of the adjustment component according to an embodiment of the present invention.

[0030] Figure 5 This is the second schematic diagram of the adjustment state structure of the adjustment component according to an embodiment of the present invention.

[0031] Figure 6 yes Figure 1 Schematic diagram of the CC cross-sectional structure.

[0032] In the figure: 1 is the shell supporting ring plate, 2 is the center ring plate, 3 is the radiation support rod, 4 is the adjusting device, 41 is the fixing block, 42 ​​is the adjusting block, 43 is the adjusting wedge block, 5 is the tail shield shell block, and 6 is the plumb line support frame. DETAILED DESCRIPTION

[0033] The following is a more detailed description of a shield machine tail shield shell assembly tool and method of the present invention in conjunction with the accompanying drawings and through specific implementation methods.

[0034] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0035] See also Figure 1-Figure 6The present embodiment discloses a tail shield shell assembly tool for a shield machine, including a center ring plate, a plumb line support frame and an adjustment assembly. The outer side of the center ring plate is connected to the shell support ring plate through a plurality of radiating support rods, and the outer arc of the shell support ring plate serves as a reference for a plurality of arc segment tail shield shell blocks; the plumb line support frame is fixedly connected to the upper end surface of the center ring plate, and a plumb line that can pass through the center of the center ring plate is connected to the plumb line support frame through a vertical line. The adjustment assembly is connected between the shell support ring plate and the tail shield shell block, and is used to adjust and limit the position of the tail shield shell block relative to the shell support ring plate. The shield machine tail shield shell splicing tooling in this embodiment can be used for splicing multiple arc segment tail shield shell blocks. The outer arc of the shell support ring plate serves as a full circle, which is convenient for providing an overall reference for multiple tail shield shell segments. At the same time, because personnel are required to adjust the shell position, the shell support ring plate can also be used as a walking platform. In addition, the shell support ring plate can be rigidly supported at a certain height, and can cooperate with the tail shield shell bottom sample to provide upper and lower references for the tail shield shell segments. The roundness of each tail shield shell block can be verified through the vertical line on the center ring plate. The splicing efficiency is high and the splicing quality is high, which solves the technical problems of slow tail shield shell splicing speed, low efficiency and poor splicing accuracy in the prior art.

[0036] In this embodiment, preferably, Figure 3 As shown, the adjustment assembly includes an adjustment block, a fixed block and an adjustment wedge block. The fixed block is fixedly connected to the upper end surface of the shell support ring plate, and multiple blocks are distributed on the upper end surface of the shell support ring plate. The adjustment block is fixedly connected to the inner wall of the tail shield shell block. The adjustment block is an L-shaped adjustment block, including a transverse block and a vertical block. The transverse block covers the upper part of the fixed block, and the fixed block is located between the tail shield shell block and the vertical block. The adjustment wedge block is inserted between the vertical block and the fixed block or between the tail shield shell block and the fixed block, and is used to adjust and limit the position of the tail shield shell block relative to the shell support ring plate; as shown Figure 4 As shown, when the adjustment wedge block is gradually inserted between the vertical block and the fixed block, it is used to adjust the tail shield shell toward the center direction of the shell support ring plate, and is used to limit the position of the tail shield shell relative to the shell support ring plate, such as Figure 5 As shown, when the adjusting wedge block is gradually inserted between the tail shield shell block and the fixed block, it is used to adjust the tail shield shell block away from the center direction of the shell support ring plate.

[0037] In this embodiment, preferably, the outer diameter of the shell support ring plate is smaller than the process inner diameter of the tail shield shell, so as to facilitate the inward and outward adjustment of the tail shield shell blocks.

[0038] In this embodiment, preferably, the shell support ring plate is set as an annular thin plate, the distance between its inner diameter and outer diameter is the width, and the distance between its upper end face and lower end face is the thickness. The shell support ring plate should not be too thick, because too thick will affect the overall welding shrinkage and make it difficult to control deformation.

[0039] In this embodiment, preferably, the plumb bob support frame is configured in an L-shape. The L-shape facilitates adjustment of the position of the perpendicular so that the perpendicular line coincides with the center of the bottom sample circle.

[0040] The processing method of the shell support ring plate and the center ring plate in the shield machine tail shell assembly tooling is as follows:

[0041] 1. Cut the shell support ring plate with a 25mm plate, and cut the center ring plate with a 40mm full circle (the center ∅100 hole is not cut);

[0042] 2. The radiation support rods on the outer side of the whole circle of the spliced ​​center ring plate are welded, and the radiation support rods are made of 100mm square steel (the number of supports will be increased depending on the diameter of the tail shield);

[0043] 3. Determine the center of the circle, and use a vertical lathe or semi-automatic cutting machine to cut the outer arc of the shell support ring plate, which is 2mm smaller than the process inner diameter of the tail shield shell;

[0044] 4. Cut the center hole of the center ring plate ∅100.

[0045] This embodiment also discloses a method for joining points of a shield shell at the rear of a shield machine, comprising the following steps:

[0046] a. Level the assembly platform and draw the bottom pattern of the tail shield shell on the assembly platform;

[0047] b. With the bottom sample as the reference, with the excavation end of the tail shield shell facing downward, assemble the first tail shield shell block, adjust the verticality and provide rigid support for it;

[0048] c. Take the first tail shield shell block as the reference, assemble the shield machine tail shield shell assembly fixture described above, adjust the tail shield shell assembly fixture to make it concentric with the bottom sample, and fix it on the assembly platform, and make it close to one end of the tail shield shell locating ring. The purpose of being close to one end of the tail shield locating ring is to ensure the roundness of the locating ring.

[0049] d. Use the outer arc of the shield machine tail shield shell assembly tooling as the upper reference and the bottom sample as the lower reference to assemble the adjacent tail shield shell blocks of the first tail shield shell block;

[0050] e. According to the center of the bottom sample, hang a vertical line on the plumb support frame to reflect the center of the circle;

[0051] f. Adjust the local roundness of the tail shield shell block adjacent to the first tail shield shell block by adjusting the assembly, and verify the roundness by measuring the radius of the tail shield shell block by a vertical line;

[0052] g. temporarily fix the tail shield shell block on the shell support ring plate through the adjustment component, that is, by gradually inserting the adjustment wedge block into the gap between the fixed block and the vertical block of the adjustment block, since the position of the fixed block is fixed, the tail shield shell block can be adjusted towards the center direction of the shell support ring plate; by gradually inserting the adjustment wedge block into the gap between the fixed block and the tail shield shell block, since the position of the fixed block is fixed, the tail shield shell block can be adjusted away from the center direction of the shell support ring plate; by inserting the adjustment wedge block between the fixed block and the vertical block of the adjustment block, the fixed block on the shell support ring plate can pull the adjustment block on the tail shield shell block to prevent the tail shield shell block from falling outward; by inserting the adjustment wedge block between the fixed block and the shell block, the fixed block on the shell support ring plate can resist the tail shield shell block to prevent the tail shield shell block from tilting inward, thereby making the tail shield shell block in a vertical state;

[0053] h. Repeat steps d to g to sequentially assemble adjacent tail shield shell blocks;

[0054] i. Use the vertical line to measure the radius of each tail shield shell block again to check the roundness. After the roundness of all tail shield shell blocks is qualified, use process steel plates to fit the tail shield shell blocks together and weld them as a whole.

[0055] In this embodiment, preferably, the first tail shield shell segment to be assembled in step b is the tail shield shell segment with the largest curvature in the tail shield shell. Based on the tail shield shell segment with the larger curvature as a reference, the assembly tool for the tail shield shell of the shield machine can achieve better assembly accuracy.

[0056] In this embodiment, preferably, in step c, the shield machine's tail shield shell assembly tooling is supported on the assembly platform by four vertical support rods connected to the four corners of the lower end surface of the shell support ring plate, and the vertical support rods are welded and fixedly connected to the assembly platform, which can stably support the shield machine's tail shield shell assembly tooling.

[0057] In this embodiment, preferably, in step c, the height of the shield machine's tail shield shell splicing tooling from the splicing platform is 2 / 3 of the total length of the tail shield shell (the excavation end of the tail shield shell faces downward, near the tail shield positioning ring), so that the upper and lower reference distributions of the tail shield shell block splicing points are more even and the splicing accuracy is good.

[0058] Unless otherwise defined, the technical or scientific terms used herein shall have the usual meanings understood by persons of ordinary skill in the field to which the invention belongs. The use of "first", "second" and similar words in the specification and claims of this application does not indicate any order, quantity or importance, but is only used to distinguish different components. Similarly, the use of "one" or "an" and other similar words does not necessarily indicate a quantitative limitation. "Include" or "comprising" and other similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and other similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0059] The exemplary implementation modes of the present invention are described in detail above with reference to the preferred embodiments. However, it can be understood by those skilled in the art that, without departing from the concept of the present invention, various modifications and variations can be made to the above-mentioned specific embodiments, and various combinations of the technical features and structures proposed in the present invention can be made without exceeding the protection scope of the present invention.

Claims

1. A method for assembling the tail shield shell of a shield machine, the method using a tail shield shell assembly tool for assembling the tail shield shell of the shield machine, the tail shield shell assembly tool for the shield machine comprising: A center ring plate, the outer side of which is connected to a shell support ring plate through a plurality of radiating support rods, and the outer arc of the shell support ring plate is used as a reference for dividing the tail shield shell into multiple arc segments; A plumb support frame is fixedly connected to the upper end surface of the center ring plate, and a plumb support frame is connected to the plumb support frame via a vertical line and is capable of passing through the center of the center ring plate; as well as An adjustment component is connected between the shell support ring plate and the tail shield shell block, and is used to adjust and limit the position of the tail shield shell block relative to the shell support ring plate; the adjustment component includes an adjustment block, a fixed block and an adjustment wedge block, the fixed block is fixedly connected to the upper end surface of the shell support ring plate, and a plurality of the adjustment blocks are distributed on the upper end surface of the shell support ring plate, the adjustment block is fixedly connected to the inner wall of the tail shield shell block, the adjustment block is an L-shaped adjustment block, including a transverse block and a vertical block, the transverse block cover is on the upper part of the fixed block, and the fixed block is located between the tail shield shell block and the vertical block The adjusting wedge block is inserted between the vertical block and the fixed block, or between the tail shield shell block and the fixed block, and is used to adjust and limit the position of the tail shield shell block relative to the shell support ring plate; when the adjusting wedge block is gradually inserted between the vertical block and the fixed block, it is used to adjust the tail shield shell toward the center direction of the shell support ring plate, and when the adjusting wedge block is gradually inserted between the tail shield shell block and the fixed block, it is used to adjust the tail shield shell block away from the center direction of the shell support ring plate; the method comprises the following steps: a. Level the assembly platform and draw the bottom pattern of the tail shield shell on the assembly platform; b. Based on the bottom sample, assemble the first tail shield shell blocks, adjust the verticality and provide rigid support for it; c. Using the first tail shield shell block as a reference, assemble the tail shield shell assembly fixture of the shield machine, adjust the tail shield shell assembly fixture to make it concentric with the bottom sample, and fix it on the assembly platform, and make it close to one end of the positioning ring of the tail shield shell; d. Use the outer arc of the shield machine tail shield shell assembly tooling as the upper reference and the bottom sample as the lower reference to assemble the adjacent tail shield shell blocks of the first tail shield shell block; e. According to the center of the bottom sample, hang a vertical line on the plumb support frame to reflect the center of the circle; f. Adjust the local roundness of the tail shield shell block by adjusting the components, and verify the roundness by measuring the radius of the tail shield shell block with a vertical line; g. Temporarily fix the tail shield shell blocks to the shell support ring plate by adjusting the components; h. Repeat steps d to g to sequentially assemble adjacent tail shield shell blocks; i. Check the roundness of each tail shield shell segment by measuring the radius of each segment with a vertical line. After the roundness is qualified, use process steel plates to join the segments of the tail shield shell segment and weld them as a whole.

2. A method for joining points of a tail shield shell of a shield machine according to claim 1, characterized in that: The outer diameter of the shell supporting ring plate is smaller than the process inner diameter of the tail shield.

3. A method for joining points of a tail shield shell of a shield machine according to claim 2, characterized in that: The outer diameter of the shell supporting ring plate is 2 mm smaller than the process inner diameter of the tail shield shell.

4. A method for joining points of a tail shield shell of a shield machine according to claim 1, characterized in that: The shell supporting ring plate is configured as an annular thin plate, the distance between its inner diameter and outer diameter is the width, and the distance between its upper end surface and lower end surface is the thickness.

5. A method for joining points of a tail shield shell of a shield machine according to claim 1, characterized in that: The plumb bob support frame is configured to be L-shaped.

6. A method for joining points of a tail shield shell of a shield machine according to claim 1, characterized in that: The first tail shield shell segment to be assembled in step b is a tail shield shell segment with the largest curvature in the tail shield shell.

7. A method for joining points of a tail shield shell of a shield machine according to claim 1, characterized in that: In the step c, the shield machine tail shield shell assembly tooling is supported on the assembly platform by a plurality of vertical support rods connected to the lower end surface of the shell support ring plate, and the vertical support rods are fixedly connected to the assembly platform.

8. A method for joining points of a tail shield shell of a shield machine according to claim 1, characterized in that: In the step c, the height of the shield machine tail shield shell assembly tooling from the assembly platform is 2 / 3 of the total length of the tail shield shell.

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