A method for installing a shaft boring machine main machine at a starting section

Abstract

The application provides a method for installing a shaft tunneling machine main machine in a starting section, and belongs to the technical field of shaft tunneling machines. The method comprises the following steps: placing the side with cutters of a cutter head center connecting block downward at the center in the shaft starting section, and adjusting the flatness of the upper surface thereof. A pair of inner cutter bodies are installed on the periphery of the cutter head center connecting block, a cutter head middle connecting block and a cutter head flange connecting block are installed on the cutter head center connecting block, and a pair of connecting webs are installed on the periphery of the cutter head flange connecting block. A pair of outer cutter bodies are installed on the periphery of the inner cutter head, each outer cutter body is connected with each inner cutter body and each connecting web, and a third supporting piece is arranged between the outer cutter body and the shaft wall. A main drive is installed on the cutter head flange connecting block, and an inner shield body and an outer shield body are sequentially installed on the periphery of the main drive. The method provided by the application is performed in the shaft starting section, starts from ensuring the concentricity and the levelness, avoids the influence of cumulative installation errors, and reduces the installation difficulty of the large-diameter shaft tunneling machine main machine.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of shaft boring machine, and particularly relates to a method for installing a main machine of a shaft boring machine in a starting section. BACKGROUND

[0002] The shaft boring machine is a device for shaft construction, which has the functions of boring, supporting, slagging, shaft wall assembling and slag separation, and is widely used in underground space development engineering, such as underground parking lot construction, water storage pool construction, resource exploration and mineral collection. Due to the large size of the shaft boring machine, the shaft boring machine usually needs to be installed and debugged in the starting section of the construction.

[0003] The shaft boring machine comprises a main machine and a machine body, the main machine is connected to the front side of the machine body and used for boring operation. The main machine comprises a cutter head, a main drive and a shield body. The cutter head comprises a cutter head center group, an inner cutter head and an outer cutter head. The cutter head center group comprises a cutter head center connecting block, a cutter head middle connecting block, a cutter head flange connecting block and a plurality of connecting webs. The inner cutter head is sleeved outside the cutter head center connecting block and comprises a plurality of annular inner cutter bodies. The outer cutter head is sleeved outside the inner cutter head and comprises a plurality of annular outer cutter bodies. The shield body comprises an inner shield ring and an outer shield ring. The inner shield ring is sleeved on the main drive and comprises a plurality of annular inner shield bodies. The outer shield ring is sleeved outside the inner shield ring and comprises a plurality of annular outer shield bodies. The main drive is used to drive the cutter head to rotate and perform boring operation by using the cutters on the cutter head.

[0004] In the prior art, considering that the boring face is downward during shaft construction, the main machine is usually hoisted into the shaft after being installed, so as to perform boring operation. However, this method is not suitable for large-diameter shaft boring machines. If the large-diameter shaft boring machine is hoisted into the shaft after being installed, a large amount of manpower, material resources and financial resources will be consumed, and the installation and debugging are difficult, and the installation error is difficult to control. SUMMARY

[0005] The present application provides a method for installing a main machine of a shaft boring machine in a starting section, so as to solve the problem that the main machine of the shaft boring machine in the prior art is not suitable for installation and debugging operation in a large-diameter shaft, and the installation error is difficult to control.

[0006] The method for installing the main machine of the shaft boring machine in the starting section provided by the present application comprises a cutter head center group, a plurality of inner cutter bodies, a plurality of outer cutter bodies, a main drive, a plurality of inner shield bodies and a plurality of outer shield bodies. The cutter head center group comprises a cutter head center connecting block, a cutter head middle connecting block, a cutter head flange connecting block and a plurality of connecting webs. The method comprises the following steps:

[0007] The one side of the cutter disc center connecting block provided with the cutter is placed downward at the center of the shaft starting section, and is supported at the bottom of the cutter disc center connecting block by the first support;

[0008] Adjusting the flatness of the upper surface of the cutter disc center connecting block;

[0009] Each inner cutter body is installed in pairs on the circumferential side of the cutter disc center connecting block to form an inner cutter disc arranged around the circumferential side of the cutter disc center connecting block, and the bottom of each inner cutter body is supported by at least one second support;

[0010] A cutter disc middle connecting block is installed on the upper surface of the cutter disc center connecting block, a cutter disc flange connecting block is installed on the upper surface of the cutter disc middle connecting block, and each connecting web plate is installed in pairs on the circumferential side of the cutter disc flange connecting block, each connecting web plate corresponding to each inner cutter body;

[0011] Each outer cutter body is installed in pairs on the circumferential side of the inner cutter disc to form an outer cutter disc arranged around the circumferential side of the inner cutter disc, each outer cutter body is connected to each inner cutter body and each connecting web plate, and each outer cutter body is supported by a third support between the shaft wall of the shaft starting section;

[0012] A main drive is installed on the upper surface of the cutter disc flange connecting block;

[0013] Each inner shield body is installed in sequence on the circumferential side of the main drive to form an inner shield ring arranged around the circumferential side of the main drive;

[0014] Each outer shield body is installed in sequence on the circumferential side of the inner shield ring to form an outer shield ring arranged around the circumferential side of the inner shield ring, and each outer shield body is connected to each inner shield body in a one-to-one correspondence.

[0015] In some possible implementation manners, adjusting the flatness of the upper surface of the cutter disc center connecting block includes the following steps:

[0016] A plurality of first detection points are arranged on the upper surface of the cutter disc center connecting block;

[0017] Adjusting devices are arranged at the positions corresponding to the first detection points on the cutter disc center connecting block;

[0018] The height values of the first detection points are measured;

[0019] One of the first detection points is selected as a first reference point;

[0020] The height values of the remaining first detection points are adjusted by the adjusting devices to be within a first preset range from the height value of the first reference point.

[0021] In some possible implementation manners, each inner cutter body is installed in pairs on the circumferential side of the cutter disc center connecting block, including the following steps:

[0022] The inner cutter bodies are divided into a plurality of inner cutter installation groups, and each inner cutter installation group includes two inner cutter bodies;

[0023] Each inner cutter installation group is installed at intervals on the circumferential side of the cutter disc center connecting block, and the two inner cutter bodies in each inner cutter installation group are symmetrically installed on opposite sides of the cutter disc center connecting block.

[0024] In some possible implementations, a cutter disc intermediate connecting block is installed on the upper surface of the cutter disc center connecting block, and a cutter disc flange connecting block is installed on the upper surface of the cutter disc intermediate connecting block, including the following steps:

[0025] The cutter disc intermediate connecting block is installed on the upper surface of the cutter disc center connecting block, and the flatness of the upper surface of the cutter disc intermediate connecting block is adjusted;

[0026] The cutter disc flange connecting block is installed on the upper surface of the cutter disc intermediate connecting block, and the flatness of the upper surface of the cutter disc flange connecting block is adjusted.

[0027] In some possible implementations, each outer cutter body is installed in pairs on the circumferential side of the inner cutter disc, including the following steps:

[0028] The outer cutter bodies are divided into a plurality of outer cutter installation groups, and each outer cutter installation group includes two outer cutter bodies;

[0029] Each outer cutter installation group is installed at intervals on the circumferential side of the inner cutter disc, and the two outer cutter bodies in each outer cutter installation group are symmetrically installed on opposite sides of the inner cutter disc;

[0030] First, the upper part of the outer cutter body is connected to the corresponding connecting web plate, and then the lower part of the outer cutter body is connected to the corresponding inner cutter body.

[0031] In some possible implementations, each outer cutter body is supported by a third support between the shaft wall of the shaft starting section, including the following steps:

[0032] After each outer cutter body is installed, the third support is fixedly connected to each outer cutter body, and each third support is in abutment with the shaft wall;

[0033] After all the outer cutter bodies are installed, the third supports are removed.

[0034] In some possible implementations, each inner shield body is installed in sequence on the circumferential side of the main drive, including the following steps:

[0035] One of the plurality of inner shield bodies is selected as a positioning inner shield body, a first mark is provided on the positioning inner shield body, and a second mark is provided on the main drive;

[0036] The positioning inner shield body is installed on the connecting member of the main drive, the first mark corresponds to the second mark, and a floating gap is provided between the positioning inner shield body and the main drive;

[0037] adjusting the flatness of the upper surface of the positioning inner shield body;

[0038] The remaining inner shield bodies are sequentially installed on the circumferential side of the main drive, and the adjacent inner shield bodies are positioned by positioning pins.

[0039] In some possible implementations, a floating gap is provided between the positioning inner shield body and the main drive, including the following steps:

[0040] A detachable positioning plate is provided between the positioning inner shield body and the main drive, a floating gap is left between the positioning plate and the positioning inner shield body, or a floating gap is left between the positioning plate and the main drive.

[0041] In some possible implementations, the flatness of the upper surface of the positioning inner shield body is adjusted, including the following steps:

[0042] A plurality of second detection points are provided on the surface of the positioning inner shield body, and second adjusting devices are provided on the positioning inner shield body corresponding to each second detection point;

[0043] The height values of each second detection point are measured;

[0044] One of the second detection points is selected as a second reference point;

[0045] The height values of the remaining second detection points are adjusted by the second adjusting devices to be within a second preset range from the height value of the second reference point.

[0046] In some possible implementations, each outer shield body is sequentially installed on the circumferential side of the inner shield ring, including the following steps:

[0047] One of the plurality of outer shield bodies is selected as a positioning outer shield body, a third mark is provided on the positioning outer shield body, and a fourth mark is provided on the inner shield body;

[0048] The positioning outer shield body is installed on the outer side of the corresponding inner shield body, so that the third mark corresponds to the fourth mark;

[0049] The flatness of the upper surface of the positioning outer shield body is adjusted;

[0050] The remaining outer shield bodies are sequentially installed on the circumferential side of the inner shield ring, and the adjacent outer shield bodies and the adjacent outer shield bodies and the inner shield body are positioned by positioning pins.

[0051] The application provides a vertical shaft tunneling machine main machine installation method in a starting section.The vertical shaft tunneling machine main machine installation method in the starting section comprises the following steps: placing a cutter disc center connecting block with one side provided with cutters downward in the center of the starting section of the vertical shaft; supporting the bottom of the cutter disc center connecting block by a first supporting piece to ensure that the cutter disc center connecting block is coaxial with the starting section of the vertical shaft; adjusting the flatness of the upper surface of the cutter disc center connecting block to ensure the levelness of subsequent component installation; installing each inner cutter body on the circumferential side of the cutter disc center connecting block in pairs to form an inner cutter disc arranged around the circumferential side of the cutter disc center connecting block, and supporting the bottom of each inner cutter body by at least one second supporting piece; supporting the inner cutter body by the second supporting piece to prevent the inner cutter body from overturning and ensure stability; installing a cutter disc middle connecting block on the upper surface of the cutter disc center connecting block, installing a cutter disc flange connecting block on the upper surface of the cutter disc middle connecting block, and installing each connecting web plate on the circumferential side of the cutter disc flange connecting block in pairs, each connecting web plate corresponding to each inner cutter body; installing each outer cutter body on the circumferential side of the inner cutter disc in pairs to form an outer cutter disc arranged around the circumferential side of the inner cutter disc, and connecting each outer cutter body with each inner cutter body and each connecting web plate, and supporting each outer cutter body and the shaft wall of the starting section of the vertical shaft by a third supporting piece to fix the outer cutter body and the shaft wall, so as to ensure the stability of the subsequent installation process; installing a main drive on the upper surface of the cutter disc flange connecting block, and installing each inner shield body on the circumferential side of the main drive in sequence to form an inner shield ring arranged around the circumferential side of the main drive; and installing each outer shield body on the circumferential side of the inner shield ring in sequence to form an outer shield ring arranged around the circumferential side of the inner shield ring, and connecting each outer shield body with each inner shield body in sequence, so as to complete the installation of the main machine.

[0052] Therefore, the vertical shaft tunneling machine main machine installation method in the starting section provided by the application adjusts the concentricity and levelness of the starting component of the main machine and the starting section of the vertical shaft, thereby adapting the main machine installation to the starting section of the vertical shaft, avoiding the influence of cumulative installation errors, facilitating timely adjustment during the installation process of each component, reducing the installation difficulty of the large-size main machine, improving the stability of each component after installation, being high in safety, and ensuring installation efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0053] The accompanying drawings, which are incorporated herein and form a part of the specification, illustrate embodiments consistent with the present application and, together with the description, further serve to explain the principles of the application.

[0054] Figure 1 FIG. 1 is a structural schematic diagram of a vertical shaft tunneling machine main machine in the background art;

[0055] Figure 2 FIG. 2 is a top view of FIG. 1; Figure 1

[0056] Figure 3This is a flow chart of a method for installing a shaft boring machine main unit at a starting section in an embodiment of the present application;

[0057] Figure 4 This is a schematic diagram of placing the cutterhead center connecting block at the starting section of a shaft in an embodiment of the present application;

[0058] Figure 5 for Figure 4 A partial enlarged view of point A in the middle;

[0059] Figure 6 This is a top view of the inner cutter body installed on the peripheral side of the cutter head center connecting block in the embodiment of the present application;

[0060] Figure 7 This is a front view of the inner cutter body installed on the peripheral side of the cutter head center connecting block in the embodiment of the present application;

[0061] Figure 8 This is a front view of the cutter head intermediate connecting block installed on the cutter head central connecting block in an embodiment of the present application;

[0062] Figure 9 This is a front view of the cutterhead flange connection block installed on the cutterhead middle connection block in an embodiment of the present application;

[0063] Figure 10 This is a front view of the connection web installed on the peripheral side of the cutter head flange connection block in the embodiment of the present application;

[0064] Figure 11 This is a front view of an outer cutter body installed on the circumference of the inner cutter disc in an embodiment of the present application;

[0065] Figure 12 This is a front view of the outer cutter head after installation in the embodiment of the present application;

[0066] Figure 13 This is a top view of the inner shield installed on the main drive side in the embodiment of the present application;

[0067] Figure 14 This is a top view of the outer shield body installed on the circumferential side of the inner shield in an embodiment of the present application.

[0068] Reference numerals:

[0069] 10: Cutter head center group;

[0070] 10a: Excavation face;

[0071] 11: Cutter head center connection block;

[0072] 12: middle connecting block of the cutter head;

[0073] 13: Cutter head flange connection block;

[0074] 14: connecting webs;

[0075] 20: inner cutter body;

[0076] 21: groove;

[0077] 22: support beam;

[0078] 30: outer cutter body;

[0079] 31: protrusion;

[0080] 40: main drive;

[0081] 41: connecting member;

[0082] 50: inner shield body;

[0083] 60: outer shield body;

[0084] 110: shaft starting section;

[0085] 120: reference surface;

[0086] 130: first support member;

[0087] 140: first detection point;

[0088] 150: adjusting device;

[0089] 160: second detection point;

[0090] 210: second support member;

[0091] 310: third support member.

[0092] The specific embodiments of the application have been shown by way of example in the above figures, and will be described in more detail hereafter. These figures and this written description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept by reference to specific embodiments. DETAILED DESCRIPTION

[0093] The exemplary embodiments will be described in detail herein with reference to the attached drawings. The description of the exemplary embodiments is intended to apply to all alternative embodiments, as would be understood by one skilled in the art. The following exemplary embodiments are described herein with reference to the figures. In the description of the figures, like numbers refer to like elements throughout. The exemplary embodiments described herein are not meant to be limiting but merely exemplary.

[0094] As mentioned in the background section, the shaft boring machine comprises a main machine and a machine body connected to the main machine, such as Figure 1 and Figure 2As shown, the host machine can include a cutter head center group 10, a plurality of inner cutter bodies 20, a plurality of outer cutter bodies 30, a main drive 40, a plurality of inner shield bodies 50 and a plurality of outer shield bodies 60, wherein the cutter head center group 10 includes a cutter head center connecting block 11, a cutter head intermediate connecting block 12, a cutter head flange connecting block 13 and a plurality of connecting webs 14, the cutter head center connecting block 11 has a digging face 10a at one end of its axial direction, and a cutter (not shown in the figure) is installed on the digging face 10a.

[0095] The other end of the cutter head center connecting block 11 is coaxially connected with the cutter head flange connecting block 13 through the cutter head intermediate connecting block 12, the cutter head center connecting block 11, the cutter head intermediate connecting block 12 and the cutter head flange connecting block 13 are of a rotary body structure with substantially identical shapes, and are separately installed for hoisting. The plurality of connecting webs 14 are arranged in a ring shape on the circumferential side of the cutter head flange connecting block 13 and extend along the radial direction of the cutter head. The inner cutter bodies 20 are connected with the cutter head center connecting block 11, and the plurality of inner cutter bodies 20 are arranged in a ring shape on the circumferential side of the cutter head center connecting block 11 and are connected to form an inner cutter head. The plurality of outer cutter bodies 30 are arranged in a ring shape on the circumferential side of the inner cutter head, and the outer cutter bodies 30 are connected with the inner cutter bodies 20 and the connecting webs 14 correspondingly, so as to form an outer cutter head. Among them, the inner cutter head and the outer cutter head are installed with cutters (not shown in the figure) on the side close to the digging face 10a. Moreover, the inner cutter bodies 20 and the outer cutter bodies 30 extend obliquely away from the cutter head center connecting block 11 and the digging face 10a on the side close to the digging face 10a, so as to form an inverted conical structure of the cutter head, and the cutter head flange connecting block 13 is connected with the main drive 40.

[0096] The plurality of inner shield bodies 50 are arranged in a ring array and connected on the circumferential side of the main drive 40, so as to form an inner shield ring, the two adjacent inner shield bodies 50 are positioned by positioning pins and connected and fixed by connecting members 41 such as bolts. And a floating gap is left between each inner shield body 50 and the main drive 40, so as to facilitate installation. The inner shield body 50 is movably connected with the connecting member 41 at the corresponding position, so that the main drive 40 can axially float on the inner side of the inner shield ring. The plurality of outer shield bodies 60 are arranged in a ring array and connected on the circumferential side of the inner shield ring, so as to form an outer shield ring, the number of outer shield bodies 60 is consistent with the number of inner shield bodies 50, each outer shield body 60 is correspondingly connected on the outer side of each inner shield body 50, and the adjacent two outer shield bodies 60 and the adjacent inner shield body 50 and outer shield body 60 are all positioned by positioning pins and fixed by bolt connection, so that the outer shield ring and the inner shield ring are connected as a whole.

[0097] During excavation, with the excavation face 10a facing downward, the main drive 40 rotates the cutterhead assembly 10 and the inner and outer cutterheads, using the cutters for excavation. Furthermore, the outer cutter body 30 has a protrusion 31 on the side facing the inner cutter body 20, and the inner cutter body 20 has a matching groove 21 on the side facing the outer cutter body 30. The protrusion 31 is positioned and connected to the groove 21. Support beams 22 connect adjacent inner cutter bodies 20 to increase torsional strength.

[0098] At present, the main engine of the tunnel boring machine is generally installed on the ground before work, and then it is hoisted into the shaft, and the gap between the main engine and the shaft wall is adjusted to meet the operating requirements. However, this installation method is only suitable for smaller main engines and shafts, such as main engines with excavation diameters of 7m and below. When the size is larger, for example, the excavation diameter is around 12m, the size and weight of each component are large. If the cutterhead is not in the center of the starting shaft, it will cause tipping during assembly, and the outer cutterhead will interfere with the shaft wall, causing the entire assembly to fail. Due to the high difficulty of installation and debugging operations, as well as safety risks such as unstable center of gravity and easy tipping, it cannot meet the installation requirements of tunnel boring machine main engines for large-diameter shafts.

[0099] In response to the above technical problems, an embodiment of the present application provides a method for installing the main unit of a vertical shaft boring machine in the starting section, by installing the cutter head center group, inner cutter body, outer cutter body, main drive, inner shield body and outer shield body in the vertical shaft of the starting section, and adjusting the concentricity and horizontality with the starting section of the vertical shaft starting from the starting components of the main unit installation, thereby adapting the main unit installation to the starting section of the vertical shaft while avoiding the impact of cumulative installation errors, facilitating timely adjustment of each component during the installation process, reducing the installation difficulty of a large-size main unit, improving the stability of each component after installation, and ensuring high safety and installation efficiency.

[0100] The following will be combined with the accompanying drawings to describe in detail the technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.

[0101] Combine Figures 1-14 As shown, an embodiment of the present application provides a method for installing a shaft boring machine main unit at a starting section, comprising the steps of:

[0102] S101. Place the cutterhead center connecting block 11 with the cutter facing downward at the center of the shaft starting section 110, and support it on the bottom of the cutterhead center connecting block 11 through the first support member 130.

[0103] Combine Figures 3-5The shaft starting section 110 is used for positioning and debugging the main machine of the tunneling machine, and a foundation pit with a certain depth can be excavated on the ground foundation. The bottom surface of the foundation pit is flat, the diameter of the foundation pit is slightly larger than the diameter of the cutter head of the tunneling machine, and the bottom surface and the side wall of the foundation pit can be hardened.

[0104] The reference surface 120 is a horizontal plane, and the reference surface 120 can select the relatively flat bottom surface in the foundation pit, or a flat plate can be laid on the bottom surface, and the upper surface of the flat plate is used as the reference surface 120. The projection point of the center (or the approximate center) of the shaft starting section 110 on the reference surface 120 can be selected as the origin, and the center of the shaft starting section 110 can be obtained by a measuring device.

[0105] The first support 130 is used for supporting the cutter head center connecting block 11, and keeping the axis of the cutter head center connecting block 11 substantially on the same vertical line as the origin. The first support 130 is fixed on the reference surface 120, and the top end of the first support 130 is in contact with the tunneling surface 10a. The first support 130 can support the tunneling surface 10a by multiple support parts to support the cutter head center connecting block 11 above the reference surface 120. The cutter head center connecting block 11 can be hoisted by a hoisting device such as a crown block or a crane, and the hoisting device can also be applied to subsequent component hoisting occasions in the main machine installation process. The specific type of the hoisting device is not limited in the embodiment.

[0106] The first support 130 can be a support tool with a uniform height, or a telescopic part with an adjustable height. The support parts of the first support 130 need to avoid the cutters on the tunneling surface 10a. The number of support parts on the first support 130 can be adaptively set according to the specific contact position on the tunneling surface 10a.

[0107] For example, the first support 130 includes a base and multiple support columns vertically connected to the base. The support columns are arranged in a ring shape, and the center of the ring is on the same vertical line as the origin. The distance between the support columns is determined according to the size of the tunneling surface 10a, and the support columns are respectively supported on the tunneling surface 10a. Moreover, the difference between the center of the tunneling surface 10a and the origin in the horizontal plane is within ±5mm.

[0108] S102, adjust the flatness of the upper surface of the cutter head center connecting block 11.

[0109] The leveling mechanism is used to level the upper surface of the cutter head center connecting block 11, so that the cutter head center connecting block 11 is coaxial with the shaft starting section 110, thereby ensuring that the cutter head center connecting block 11 has good concentricity and levelness relative to the shaft starting section 110.

[0110] S103, each inner cutter body 20 is installed in pairs around the central connecting block 11 of the cutter disc to form an inner cutter disc arranged around the central connecting block 11 of the cutter disc, and the bottom of each inner cutter body 20 is supported by at least one second support member 210.

[0111] The inner cutter body 20 extends radially toward the center connecting block 11 of the cutter disc, and the inner cutter body 20 is positioned higher on the side away from the center connecting block 11 of the cutter disc. The inner cutter body 20 is fixedly connected to the peripheral side of the center connecting block 11 of the cutter disc, such as an inner cutter disc structure in which eight inner cutter bodies 20 are arranged in a circular array around the center connecting block 11 of the cutter disc. The specific number of inner cutter bodies 20 can be determined according to actual needs.

[0112] At least one second support member 210 is disposed between the bottom of each inner cutter body 20 and the reference surface 120. The second support member 210 can be a support fixture or a height-adjustable telescopic member. The supporting portion of the second support member 210 must clear the cutting tool at the bottom of the inner cutter body 20. The number of second support members 210 can be adaptively set based on the radial coverage of the inner cutter body 20.

[0113] For example, Figure 5 As shown, the second support member 210 is provided with a plurality of support columns on the reference surface 120. The support columns are arranged in a ring around the origin, and the upper ends of the support columns are respectively supported on the bottom of the inner cutter body 20. In this way, the inner cutter body 20 can be prevented from tipping over when it is installed on the side of the cutter head center connecting block 11.

[0114] S104. Install the cutter disc middle connecting block 12 on the upper surface of the cutter disc center connecting block 11, install the cutter disc flange connecting block 13 on the upper surface of the cutter disc middle connecting block 12, and install each connecting web 14 in pairs on the circumferential side of the cutter disc flange connecting block 13. Each connecting web 14 corresponds to each inner cutter body 20 one by one.

[0115] The cutterhead intermediate connection block 12 and the cutterhead flange connection block 13 are similar in appearance to the cutterhead center connection block 11, both being in the shape of a body of revolution. The connecting web 14 is arranged in an annular shape and connected to the circumference of the cutterhead flange connection block 13. By installing the cutterhead center assembly 10 as a block, it is easy to hoist and adjust.

[0116] S105. Each outer cutter body 30 is installed in pairs on the circumference of the inner cutter disc to form an outer cutter disc arranged around the circumference of the inner cutter disc. Each outer cutter body 30 is correspondingly connected to each inner cutter body 20 and each connecting web 14. Each outer cutter body 30 is supported by the wall of the starting section 110 of the vertical shaft through a third support member 310.

[0117] The outer cutter body 30 corresponds to the inner cutter body 20, and the outer cutter body 30 can be connected to the inner cutter body 20 through a fastening assembly on the side away from the cutter center connecting block 11 of the cutter disc, and the outer cutter body 30 can be further fastened and connected with other components of the cutter disc center group 10 through a connecting plate to form an outer cutter disc, which is in small gap fit with the shaft starting section 110.

[0118] S106, installing the main drive 40 on the upper surface of the cutter disc flange connecting block 13.

[0119] The main drive 40 is installed on the end of the cutter disc flange connecting block 13 away from the tunneling face 10a, and the main drive 40 is coaxial with the center of the cutter disc. In this way, the main drive 40 can drive the cutter disc center group 10 and the inner and outer cutter discs to rotate through the cutter disc flange connecting block 13. Moreover, the difference between the center of the main drive 40 and the origin in the horizontal plane can be within the range of ±5 mm.

[0120] S107, installing each inner shield body 50 in sequence on the peripheral side of the main drive 40 to form an inner shield ring around the main drive 40.

[0121] The inner shield body 50 can be connected to the main drive 40 through a movable connecting component to form a floating connection, and the adjacent inner shield bodies 50 are fastened and connected to form an inner shield ring, so that the main drive 40 can float in the inner shield ring.

[0122] S108, installing each outer shield body 60 in sequence on the peripheral side of the inner shield ring to form an outer shield ring around the peripheral side of the inner shield ring, and each outer shield body 60 is connected to each inner shield body 50 in one-to-one correspondence.

[0123] The outer shield body 60 corresponds to the inner shield body 50, and a plurality of outer shield bodies 60 are arranged in a ring array around the inner shield ring to form an outer shield ring. The adjacent two outer shield bodies 60 and the adjacent inner shield body 50 and outer shield body 60 can be connected through a fastener, so that the inner shield ring and the outer shield ring are connected as a whole.

[0124] It can be understood that, compared with the prior art in which the main machine is installed on the foundation and then hoisted into the shaft for debugging, the installation method provided in the embodiment installs and debugs the cutter disc center group 10, the inner cutter body 20, the outer cutter body 30, the main drive 40, the inner shield body 50 and the outer shield body 60 in the shaft starting section 110, adjusts the concentricity and levelness of the starting component of the main machine from the beginning of the installation of the main machine, thereby adapting the main machine to the shaft starting section 110 while avoiding the influence of cumulative installation errors, facilitating timely adjustment during the installation process of each component, reducing the installation difficulty of the large-size main machine, improving the stability of each component after installation, being high in safety, and ensuring the installation efficiency.

[0125] In some embodiments, adjusting the flatness of the upper surface of the cutter disc center connecting block 11 includes the following steps:

[0126] S201, a plurality of first detection points 140 are arranged on the upper surface of the cutter center connecting block 11.

[0127] Specifically, a plurality of first detection points 140 are arranged on the upper surface of the cutter center connecting block 11, and the height values of the first detection points 140 can be measured by using a total station or other measuring instruments. The first detection points 140 can be marked points drawn on the upper surface by using a marker pen or paint, or can be protruding or recessed structures arranged.

[0128] The number and position of the first detection points 140 can be determined according to the specific shape and size of the cutter center connecting block 11. For example, as shown in FIG. 1, a plurality of groups of first detection points 140 are arranged on the upper surface of the cutter center group 10 in a circumferential array around the center, and the first detection points 140 are arranged close to the edge. Figure 5

[0129] S202, an adjusting device 150 is arranged at each first detection point 140 of the cutter center connecting block 11.

[0130] The adjusting device 150 is used to adjust the height of each part of the cutter center connecting block 11. The adjusting device 150 can be a jack, which can be placed directly below each first detection point 140 of the cutter center connecting block 11, so that the height of each first detection point 140 can be adjusted by the jack. Of course, the adjusting device 150 can also be other components with telescopic locking function, which will not be limited too much in the present embodiment.

[0131] S203, the height values of the first detection points 140 are measured.

[0132] The specific height values of the first detection points 140 relative to the reference surface 120 can be measured by using a measuring instrument.

[0133] S204, one of the first detection points 140 is selected as a first reference point.

[0134] When selecting the first reference point from the plurality of first detection points 140, the first detection point 140 with the largest height value can be selected as the first reference point. In this way, when adjusting the heights of the remaining first detection points 140, only the differences between the height values of the remaining first detection points 140 and the height value of the first reference point need to be determined to improve the heights of the cutter center connecting block 11 corresponding to the remaining first detection points 140, which is easy to operate.

[0135] ​Of course, in other embodiments, the first detection point 140 with the minimum height value or the closest to the average height value can also be selected as the first reference point, and the remaining first detection points 140 can be leveled, which will not be enumerated and described here.

[0136] S205, adjust the height values of the remaining first detection points 140 to be within the first preset range of the height value of the first reference point by adjusting the device 150.

[0137] The first preset range can also be determined according to the installation requirements of the host, and in the present embodiment, the first preset range can be ±1mm, that is, after leveling the upper end surface of the cutter center connecting block 11, the difference between the height value of each first detection point 140 and the height value of the first reference point is within the range of ±1mm. In this way, it will not be tilted to one side after installation is completed, and the levelness with the shaft starting section 110 is ensured.

[0138] Further, in combination with Figures 6-7 It is shown that in the present embodiment, each inner cutter body 20 is installed in pairs on the circumferential side of the cutter center connecting block 11, including the following steps:

[0139] S301, divide all the inner cutter bodies 20 into a plurality of inner cutter installation groups, and each inner cutter installation group includes two inner cutter bodies 20.

[0140] S302, install each inner cutter installation group at intervals on the circumferential side of the cutter center connecting block 11, and the two inner cutter bodies 20 in each inner cutter installation group are symmetrically installed on opposite sides of the cutter center connecting block 11.

[0141] Specifically, in combination with Figures 6-7 It is shown that in the present embodiment, the inner cutter includes eight inner cutter bodies 20, and when installing, the eight inner cutter bodies 20 are divided into four installation groups for separate installation. The order of installing each group of inner cutter bodies 20 can be in the clockwise or counterclockwise direction, for example, the four installation groups are installed in pairs, such as along Figure 7 a, b, c, d, e, f, g, h in

[0142] Moreover, the second support 210 is used to support the inner cutter body 20, which can be a support frame, a support rod, a telescopic rod, etc. The height of the second support 210 is adjusted so that the lower end of the second support 210 is in contact with the reference surface 120, and the upper end of the second support 210 is in contact with the bottom surface of the inner cutter body 20, thereby stably supporting the inner cutter body 20. Moreover, the second support 210 and the inner cutter body 20 can be fixedly connected on the ground first, and then the inner cutter body 20 and the second support 210 are hoisted and installed together.

[0143] In this way, by installing the inner cutter bodies 20 in groups, the opposite sides of the cutter center connecting block 11 are balanced after each group of inner cutter bodies 20 is installed, and the cutter center connecting block 11 is not prone to tilting due to uneven force.

[0144] Furthermore, as shown in Figures 8-9 In the embodiment, the cutter center connecting block 11 is installed on the upper surface of the cutter center connecting block 11, and the cutter flange connecting block 13 is installed on the upper surface of the cutter center connecting block 12, including the following steps:

[0145] S401, install the cutter center connecting block 12 to the upper surface of the cutter center connecting block 11, and adjust the flatness of the upper surface of the cutter center connecting block 12.

[0146] As shown in Figure 8 The cutter center connecting block 12 is coaxially hoisted to the cutter center connecting block 11, and multiple detection points are arranged on the upper surface of the cutter center connecting block 12 for leveling. The leveling method is similar to the leveling method of the first detection point 140 on the cutter center connecting block 11, except that shims of corresponding thickness can be inserted between the uneven detection points of the cutter center connecting block 12 and the cutter center connecting block 11 for leveling. In the embodiment, the details are not described again.

[0147] S402, install the cutter flange connecting block 13 to the upper surface of the cutter center connecting block 12, and adjust the flatness of the upper surface of the cutter flange connecting block 13.

[0148] Similarly, as shown in Figure 9 The cutter flange connecting block 13 is hoisted to the cutter center connecting block 12, and multiple detection points are arranged on the upper surface of the cutter flange connecting block 13 for leveling. The leveling method is similar to the leveling method of the first detection point 140 on the cutter center connecting block 11, and shims of corresponding thickness can be inserted between the uneven detection points of the cutter center connecting block 12 and the cutter flange connecting block 13 for leveling. In the embodiment, the details are not described again.

[0149] In this way, by leveling step by step, the influence of large cumulative errors can be effectively avoided, and timely adjustment is facilitated.

[0150] Further, as shown in Figure 11 In the embodiment, each outer cutter body 30 is installed in pairs on the circumferential side of the inner cutter disc, including the following steps:

[0151] S501, divide the outer cutter body 30 into multiple outer cutter installation groups, and each outer cutter installation group includes two outer cutter bodies 30.

[0152] S502, install each outer cutter installation group at intervals on the circumferential side of the inner cutter disc, and the two outer cutter bodies 30 in each outer cutter installation group are symmetrically installed on the opposite sides of the inner cutter disc.

[0153] S503, first connect the upper part of the outer cutter body 30 with the corresponding connecting web plate 14, and then connect the lower part of the outer cutter body 30 with the corresponding inner cutter body 20.

[0154] In this embodiment, the outer cutter head also includes eight outer cutter bodies 30, which are divided into four installation groups for separate installation. The installation sequence of each group of outer cutter bodies 30 can be in the clockwise or counterclockwise direction, for example, the four installation groups are installed in pairs, and the installation sequence of each pair of outer cutter bodies 30 is as shown in Figure 7 In this embodiment, the outer cutter head also includes eight outer cutter bodies 30, which are divided into four installation groups for separate installation. The installation sequence of each group of outer cutter bodies 30 can be in the clockwise or counterclockwise direction, for example, the four installation groups are installed in pairs, and the installation sequence of each pair of outer cutter bodies 30 is as shown in

[0155] It should be noted that the outer cutter body 30 is first hoisted to be connected with the connecting web plate 14, and then the outer cutter body 30 is connected with the corresponding inner cutter body 20 by adjustment, which facilitates the installation and positioning of the outer cutter body 30.

[0156] It should be noted that the outer cutter body 30 is connected with the recess 21 on the inner cutter body 20 through the protrusion 31 to improve the torsional resistance. Therefore, as shown in Figure 6 and Figures 10-12 When installing the outer cutter body 30, the outer cutter body 30 can be moved downward from the space between adjacent inner cutter bodies 20 to avoid interference between the protrusion 31 and the connecting web plate 14 or the inner cutter body 20. After the outer cutter body 30 is moved and adjusted to the lower side of the side surface of the corresponding inner cutter body 20, the outer cutter body 30 is hoisted upward to abut against the connecting web plate 14, and the distance between the outer cutter body 30 and the inner cutter body 20 is adjusted by a tool while the outer cutter body 30 is moved upward, so that the protrusion 31 is clamped into the recess 21. The tool can be a jack, which is used to adjust the outer cutter body 30 in the radial or circumferential direction, and the outer cutter body 30 is hoisted from the bottom to the top, which can shorten the distance of the protrusion 31 interfering with the movement of the inner cutter body 20, thereby facilitating installation and adjustment.

[0157] In addition, as shown in Figure 11 In this embodiment, each outer cutter body 30 is supported by a third support member 310 between the shaft wall of the shaft starting section 110, including the following steps:

[0158] S504, after the installation of each outer cutter body 30 is completed, the third support member 310 is fixedly connected to each outer cutter body 30, and each third support member 310 abuts against the shaft wall.

[0159] S505, after the installation of all outer cutter bodies 30 is completed, the third support member 310 is removed.

[0160] Specifically, the third support 310 can be a support plate, a support rod, a support block or the like, which can be fixed on the outer cutter body 30 and abut against the well wall. Exemplarily, the third support 310 is a support steel plate, which is fixed on the outer cutter body 30 by welding, screwing, clamping or the like after the installation of each outer cutter body 30, and one end of the support steel plate abuts against the well wall, thereby preventing the outer cutter body 30 from overturning. The specific structure, number, installation position and the like of the third support 310 are not limited in the embodiment.

[0161] It should be further noted that the adjacent two inner cutter bodies 20 can be connected by the installation of the support beam 22 to form a ring-shaped whole. Exemplarily, as shown in Figure 12 the support beam 22 can be connected and fixed between the adjacent inner cutter bodies 20 by insertion, screwing, welding or the like, thereby greatly ensuring the torsional resistance of the inner cutter head and the stability and reliability in use. The specific number and installation position of the support beam 22 can be determined according to actual needs, and are not limited in the embodiment.

[0162] Optionally, as shown in Figure 13 , Figure 14 in the embodiment, each inner shield body 50 is installed in sequence on the side of the main drive 40, including the following steps:

[0163] S701, one of the plurality of inner shield bodies 50 is selected as a positioning inner shield body, a first mark is provided on the positioning inner shield body, and a second mark is provided on the main drive 40.

[0164] In the embodiment, the first mark and the second mark play a positioning role at the connection position between the positioning inner shield body and the main drive 40, thereby avoiding mispositioning. The first mark and the second mark can be drawn on the surface of the positioning inner shield body and the side of the main drive 40 by a marker pen or paint, or the first mark and the second mark can be formed by a protrusion or a recess structure provided on the side of the positioning inner shield body or the main drive 40, and the embodiment does not limit the first mark and the second mark.

[0165] S702, the positioning inner shield body is installed on the connecting piece 41 of the main drive 40, the first mark corresponds to the second mark, and a floating gap is provided between the positioning inner shield body and the main drive 40.

[0166] Exemplarily, the first mark is a first zero scale line provided on the surface of the positioning inner shield body (not shown in the figure), and the second mark is a second zero scale line provided on the side of the main drive 40 (not shown in the figure), and when the positioning inner shield body is installed, the first zero scale line is collinear with the second zero scale line, thereby positioning the installation position of the positioning inner shield body. The distance between the positioning inner shield body and the remaining inner shield bodies 50 and the main drive 40 must leave a floating gap, so that the main drive 40 can float along the axial direction relative to the inner shield bodies 50.

[0167] S703, adjust the flatness of the upper surface of the positioning inner shield body.

[0168] The positioning inner shield body can be leveled by inserting a plug plate or a gasket between the bottom of the positioning inner shield body and the connecting web plate 14 to level and maintain the positioning inner shield body, and the plug plate or the gasket can be removed after the overall installation is completed.

[0169] S704, sequentially install the remaining inner shield bodies 50 on the circumference of the main drive 40, and the adjacent inner shield bodies 50 are positioned by the positioning pins.

[0170] After the positioning inner shield body is leveled, the remaining inner shield bodies 50 are sequentially installed in the clockwise direction or the counterclockwise direction, and the adjacent two inner shield bodies 50 are positioned by the positioning pins, so that the remaining inner shield bodies 50 do not need to be measured and leveled, and the accuracy of the inner shield ring position can be ensured.

[0171] Further, in the embodiment, a floating gap is provided between the positioning inner shield body and the main drive 40, including the following steps:

[0172] A detachable positioning plate is provided between the positioning inner shield body and the main drive 40, and a floating gap is left between the positioning plate and the positioning inner shield body, or a floating gap is left between the positioning plate and the main drive.

[0173] Correspondingly, when the remaining inner shield bodies 50 are installed, a detachable positioning plate is also provided between the remaining inner shield bodies 50 and the main drive 40.

[0174] Specifically, the positioning is used to compensate for the large gap between the inner shield body 50 and the main drive 40, and a small gap, i.e., a floating gap, through which the main drive 40 can float (i.e., move) axially relative to the inner shield body 50, is left, and the floating gap can be 1mm-5mm, which is adjusted according to actual needs. The shape of the positioning plate (not shown in the figure) is determined according to the shape of the floating gap, for example, the side of the positioning inner shield body facing the main drive 40 is arc-shaped, and the side wall of the main drive 40 is also arc-shaped, and the positioning plate can be arc-shaped. The positioning plate can be a steel plate, a wooden plate, or a plastic plate, and the embodiment does not make specific limitations on this.

[0175] The positioning plate can be detachably connected with the positioning inner shield body or the remaining inner shield bodies 50, or can be detachably connected with the main drive 40. The positioning plate can be detachably connected on the side wall of the positioning inner shield body or the remaining inner shield bodies 50 facing the main drive 40 by insertion, clamping, or the like. When the positioning inner shield body is installed, the positioning plate is directly abutted on the side wall of the main drive 40, so that the floating gap between the inner shield body 50 or the remaining inner shield bodies 50 and the main drive 40 is positioned. When the inner shield body 50 is removed, the positioning plates are removed first, so that the inner shield body 50 is easily removed.

[0176] Further, as shown in Figure 13 In this embodiment, the adjustment of the flatness of the upper surface of the positioning inner shield body includes the following steps:

[0177] S721, multiple second detection points 160 are arranged on the surface of the positioning inner shield body, and second adjusting devices are arranged at positions corresponding to the second detection points 160 on the positioning inner shield body.

[0178] Specifically, the leveling method is the same as the way of arranging the first detection points 140 on the center group 10 of the cutter head. When the second detection points 160 are arranged on the positioning inner shield body, the second detection points 160 can be marked with a marker pen or paint, or can be a protruding or recessed structure. The second adjusting device is used to adjust the height of each part of the positioning inner shield body. The second adjusting device can be a plug plate or a gasket, which can be placed at the bottom of the corresponding second detection point 160.

[0179] S722, the height values of the second detection points 160 are measured.

[0180] The number and position of the second detection points 160 can be determined according to the specific shape and size of the positioning inner shield body. For example, three second detection points 160 are arranged on the positioning inner shield body, and are respectively close to the edges of the positioning inner shield body. When measuring, a total station or other measuring instruments can be used to measure the height values of the second detection points 160.

[0181] S723, one of the second detection points 160 is selected as a second reference point.

[0182] When selecting the second reference point, the height values of the second detection points 160 can also be selected, for example, the second detection point 160 with the largest height value can be selected as the second reference point.

[0183] S724, the height values of the remaining second detection points 160 are adjusted to be within a second preset range of the height value of the second reference point by using the second adjusting device.

[0184] The second preset range can be determined according to the installation requirements. In this embodiment, the second preset range can also be ±1mm, that is, after the positioning inner shield body is leveled, the difference between the height values of the second detection points 160 and the height value of the second reference point is within the range of ±1mm.

[0185] Further, as shown in Figure 14 In this embodiment, the outer shield bodies 60 are sequentially installed on the circumferential side of the inner shield ring, including the following steps:

[0186] S801, one of the multiple outer shield bodies 60 is selected as a positioning outer shield body, a third mark is arranged on the positioning outer shield body, and a fourth mark is arranged on the inner shield body 50.

[0187] S802, mounting the positioning outer shield on the outside of the corresponding inner shield 50, so that the third mark corresponds to the fourth mark.

[0188] S803, adjusting the flatness of the upper surface of the positioning outer shield.

[0189] S804, mounting the remaining outer shields 60 on the circumferential side of the inner shield ring in sequence, and positioning between adjacent outer shields 60 and between adjacent outer shields 60 and the inner shield 50 by positioning pins.

[0190] Specifically, one of the outer shields 60 can be selected as the positioning outer shield, third and fourth marks are set on the positioning outer shield and the positioning inner shield respectively, the setting method of the marks is the same as that of the first and second marks, the positioning outer shield is moved to the outside of the positioning inner shield so that the third mark corresponds to the fourth mark, and then the positioning outer shield is leveled, the leveling method of the positioning outer shield is the same as that of the positioning inner shield, after the positioning outer shield is leveled, the remaining outer shields 60 are mounted in sequence along the clockwise or counterclockwise order, and the positioning pins can be used for positioning when the outer shield 60 is connected with the inner shield 50, so as to limit the relative movement of the outer shield 60 and the inner shield 50. The positioning pins can also be used for positioning between adjacent two outer shields 60, so that the outer shield ring and the inner shield ring form a whole, and the stability is better.

[0191] It should be noted that the above embodiment only provides the mounting method of the mainframe, after the mainframe is mounted, the fuselage needs to be mounted with the mainframe, and after all the mounting is completed, the first support 130, the adjusting device 150, the second support 210, the third support 310, the plug plate, the gasket and the like used are removed.

[0192] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. It is intended that the specification and examples be considered as exemplary only, with the true scope and spirit of the application being indicated by the following claims.

[0193] It should be understood that the application is not limited to the precise construction that has been described above and illustrated in the accompanying drawings, and that various modifications and changes can be made by those skilled in the art without departing from the scope of the application. The scope of the application is limited only by the appended claims.

Claims

1. A method for installing a shaft boring machine main unit at a starting section, wherein the main unit comprises a cutterhead center group, a plurality of inner cutter bodies, a plurality of outer cutter bodies, a main drive, a plurality of inner shield bodies and a plurality of outer shield bodies, wherein: The cutterhead center assembly includes a cutterhead center connection block, a cutterhead middle connection block, a cutterhead flange connection block, and a plurality of connection webs. The installation method includes the following steps: Place the cutterhead center connecting block with the cutter facing downward at the center of the starting section of the shaft, and support the bottom of the cutterhead center connecting block with a first support member; Adjusting the flatness of the upper surface of the center connecting block of the cutter head; Each inner cutter body is installed in pairs on the peripheral side of the cutter disc central connecting block to form an inner cutter disc arranged around the peripheral side of the cutter disc central connecting block, and the bottom of each inner cutter body is supported by at least one second support member; The cutter disc intermediate connecting block is installed on the upper surface of the cutter disc central connecting block, the cutter disc flange connecting block is installed on the upper surface of the cutter disc intermediate connecting block, and each of the connecting webs is installed in pairs on the circumference of the cutter disc flange connecting block, and each of the connecting webs corresponds to each of the inner cutter bodies one by one; Each outer cutter body is installed in pairs on the circumference of the inner cutter disc to form an outer cutter disc wrapped around the circumference of the inner cutter disc, each outer cutter body is correspondingly connected to each inner cutter body and each connecting web, and each outer cutter body is supported by the shaft wall of the starting section of the shaft via a third support member; The main drive is installed on the upper surface of the cutter head flange connection block; Each inner shield body is sequentially installed on the peripheral side of the main drive to form an inner shield ring wrapped around the peripheral side of the main drive; Each of the outer shield bodies is sequentially installed on the circumference of the inner shield ring to form an outer shield ring wrapped around the circumference of the inner shield ring, and each of the outer shield bodies is connected to each of the inner shield bodies in a one-to-one correspondence; The step of adjusting the flatness of the upper surface of the central connecting block of the cutter head comprises the following steps: A plurality of first detection points are provided on the upper surface of the cutter head central connecting block; An adjustment device is provided at each of the first detection points on the central connecting block of the cutter head; measuring the height of each of the first detection points; Selecting one of the first detection points as a first reference point; The adjustment device is used to adjust the height values ​​of the remaining first detection points so that the difference between the height value of the first reference point and the height value is within a first preset range.

2. The method for installing the main engine of the shaft boring machine at the starting section according to claim 1, characterized in that: The step of installing each inner cutter body in pairs on the peripheral side of the cutter head central connecting block comprises the following steps: Divide all the inner cutter bodies into a plurality of inner cutter installation groups, each inner cutter installation group includes two inner cutter bodies; Each inner cutter installation group is installed at intervals on the circumference of the cutter disc center connection block, and the two inner cutter bodies in each inner cutter installation group are symmetrically installed on opposite sides of the cutter disc center connection block.

3. The method for installing a shaft boring machine main unit at a starting section according to claim 1, characterized in that: The step of installing the cutter disc intermediate connection block on the upper surface of the cutter disc central connection block and installing the cutter disc flange connection block on the upper surface of the cutter disc intermediate connection block comprises the following steps: Installing the cutter head intermediate connecting block to the upper surface of the cutter head center connecting block, and adjusting the flatness of the upper surface of the cutter head intermediate connecting block; Install the cutter head flange connection block to the upper surface of the cutter head middle connection block, and adjust the flatness of the upper surface of the cutter head flange connection block.

4. The method for installing a shaft boring machine main unit at a starting section according to claim 1, characterized in that: The step of installing each outer cutter body in pairs on the circumference of the inner cutter disc comprises the following steps: Divide the outer blade body into a plurality of outer blade installation groups, each outer blade installation group includes two outer blade bodies; Each outer cutter installation group is installed at intervals on the circumference of the inner cutter disc, and the two outer cutter bodies in each outer cutter installation group are symmetrically installed on opposite sides of the inner cutter disc; First, the upper portion of the outer blade body is connected to the corresponding connecting web, and then the lower portion of the outer blade body is connected to the corresponding inner blade body.

5. The method for installing a shaft boring machine main unit at a starting section according to claim 1, characterized in that: Each of the outer cutter bodies is supported by the shaft wall of the starting section of the shaft via a third support member, comprising the following steps: After each outer cutter body is installed, the third support member is fixedly connected to each outer cutter body, and each third support member is brought into contact with the well wall; After all the outer blades are installed, the third support member is removed.

6. The method for installing a shaft boring machine main unit at a starting section according to any one of claims 1 to 5, characterized in that: The step of sequentially installing each inner shield on the peripheral side of the main drive comprises the following steps: Selecting one of the plurality of inner shield bodies as a positioning inner shield body, setting a first mark on the positioning inner shield body, and setting a second mark on the main drive; Installing the positioning inner shield on the connecting piece of the main drive so that the first mark corresponds to the second mark, and providing a floating gap between the positioning inner shield and the main drive; Adjusting the flatness of the upper surface of the positioning inner shield; The remaining inner shield bodies are sequentially installed on the peripheral side of the main drive, and adjacent inner shield bodies are positioned by positioning pins.

7. The method for installing a shaft boring machine main unit at a starting section according to claim 6, characterized in that: The step of setting the floating gap between the positioning inner shield and the main drive comprises the following steps: A detachable positioning plate is provided between the positioning inner shield and the main drive, and a floating gap is left between the positioning plate and the positioning inner shield, or between the positioning plate and the main drive.

8. The method for installing a shaft boring machine main unit at a starting section according to claim 6, characterized in that: The step of adjusting the flatness of the upper surface of the positioning inner shield comprises the following steps: A plurality of second detection points are provided on the surface of the positioning inner shield body, and a second adjustment device is provided at a position on the positioning inner shield body corresponding to each of the second detection points; measuring the height of each of the second detection points; Selecting one of the second detection points as a second reference point; The second adjusting device is used to adjust the height values ​​of the remaining second detection points so that the difference between the height value of the second reference point and the height value is within a second preset range.

9. The method for installing a shaft boring machine main unit at a starting section according to any one of claims 1 to 5, characterized in that: The step of sequentially installing each of the outer shield bodies on the circumference of the inner shield ring comprises the following steps: Selecting one of the plurality of outer shield bodies as a positioning outer shield body, setting a third mark on the positioning outer shield body, and setting a fourth mark on the inner shield body; Installing the positioning outer shield body on the outer side of the corresponding inner shield body so that the third mark corresponds to the fourth mark; Adjusting the flatness of the upper surface of the positioning outer shield; The remaining outer shield bodies are sequentially installed on the circumference of the inner shield ring, and adjacent outer shield bodies and adjacent outer shield bodies and inner shield bodies are positioned by positioning pins.

Images