A cutterhead for a full-section vertical shaft boring machine

Abstract

A full-section shaft boring machine cutterhead includes a cutterhead body and cutting tools mounted on the cutterhead body. The cutterhead body comprises a first upper ring beam, a lower beam, a lower ring beam, and a lower support plate, which are coaxially arranged in a conical shape. The upper and lower ring beams are coaxially provided with a central reinforcement tube. The first upper ring beam is provided with multiple detachable cutterhead assembly modules. The outer diameter of the multiple cutterhead assembly modules formed during operation of the cutterhead is greater than the outer diameter of the first upper ring beam. The cutterhead of the full-section shaft boring machine of the present invention allows the cutterhead assembly modules to be easily removed from the shaft, allowing the cutterhead body to be smoothly lifted out of the shaft, enabling the cutterhead to be recycled and reducing the construction cost of full-section shaft boring.

Description

Technical Field

[0001] The present invention relates to the technical field of tunneling equipment, and in particular to a cutter head of a full-section vertical shaft tunneling machine. Background Art

[0002] The full-section vertical shaft boring machine is a new type of advanced equipment that combines tunnel boring machine technology and slag vertical lifting technology. Through electromechanical and hydraulic integration technology, it can achieve parallel operations of vertical tunneling - slag crushing - upper slag discharge - posture control - shaft wall support under blind hole excavation conditions. Compared with the traditional drilling and blasting method and drilling rig method of vertical shaft construction, it has the advantages of high degree of automation, small disturbance of surrounding strata, good shaft construction quality and high safety.

[0003] When a shaft boring machine is excavating under large-diameter, full-section conditions, a huge amount of slag will be generated at the bottom of the shaft. In a kilometer-level shaft without underground tunnel space, the traditional pilot shaft type downward slag discharge technology is not applicable, and only the upward slag discharge method can be used. Another method of shaft excavation at home and abroad is the reverse well drilling method. The reverse well drilling method requires first using a pilot drill to drill a pilot well from the ground downward, and then using a reaming drill to expand the well from the bottom of the well upward. It requires a tunnel or tunnel at the bottom of the well. The process is complicated and must rely on the tunnels and tunnels at the bottom of the well for construction. The reverse well drilling method is not applicable for shafts without pre-excavated tunnels, tunnels or large-depth shafts.

[0004] The cutterheads used in existing full-section vertical shaft boring machines are all of an integrated design. For example, patent CN 113250700 A, "A Cutterhead Structure for a Full-Section Vertical Shaft Boring Machine," discloses a full-section vertical shaft boring machine. However, while using the full-section vertical shaft boring machine for excavation, the shaft wall needs to be supported and reinforced. The reinforced shaft wall diameter is reduced, and the integrated cutterhead cannot be lifted out of the shaft for secondary use. After the shaft construction is completed, the cutterhead can only be discarded and sunk to the bottom of the shaft, or the cutterhead can be cut and lifted out of the shaft, making the cutterhead a disposable product and increasing the construction cost.

[0005] In addition, when excavating large diameter and full section, as the excavation depth continues to increase, the difficulty and power consumption of the slag discharge system will increase sharply. Whether the slag can be efficiently transported becomes the key to restricting the improvement of equipment efficiency. The existing cutter head slag discharge system usually adopts a hydraulic upper slag discharge system. For example, CN 113503162 A "A full-section vertical shaft tunneling machine upper slag discharge system" discloses an upper slag discharge system, in which the slag discharge pipeline and the water inlet pipeline are a nested structure, which is relatively complex, troublesome and costly in later maintenance, and reduces construction efficiency. Summary of the Invention

[0006] The object of the present invention is to provide a cutterhead of a full-section shaft boring machine, which can be easily disassembled in the shaft through modular design, so as to realize the recycling of the cutterhead and reduce the construction cost of full-section shaft boring.

[0007] The technical solution adopted by the present invention to achieve the above-mentioned object is:

[0008] A full-section shaft boring machine cutterhead includes a cutterhead body and a cutting tool arranged on the cutterhead body. The cutterhead body includes a first upper ring beam, a lower beam, a lower ring beam and a lower support plate that are coaxially and conically arranged in sequence. The upper ring beam and the lower beam are coaxially provided with a central reinforcement tube. A plurality of detachable cutterhead assembly modules are provided on the first upper ring beam. The outer contour diameter formed by the plurality of cutterhead assembly modules during the operation of the cutterhead is larger than the outer contour diameter of the first upper ring beam.

[0009] As a preferred solution of the present invention, the cutter disc assembly module includes a second upper ring beam that is evenly distributed along the circumference of the first upper ring beam to form a diameter larger than the outer contour of the first upper ring beam, the second upper ring beam is provided with assembly block spokes extending along the tapered surface of the cutter disc body to the lower beam, long spokes for forming a disc-shaped roller cutter carrier together with the assembly block spokes are provided between the lower support plate and the assembly block spokes, short spokes for forming a disc-shaped roller cutter carrier together with the assembly block spokes are provided between the lower ring beam and the assembly block spokes, the lower support plate and the lower ring beam are connected by a lower ring beam reinforcement rib, the lower ring beam and the lower beam are connected by a lower beam reinforcement rib, the lower beam and the upper ring beam are connected by a first spoke reinforcement rib, the second upper ring beam is also provided with a second spoke reinforcement rib, the first spoke reinforcement rib and the second spoke reinforcement rib are both provided with spoke welding side plates, the spoke welding side plates are provided with a first bolt hole, and the first bolt hole is provided with a first bolt assembly for detachably connecting the first spoke plate and the second spoke plate.

[0010] As a preferred solution of the present invention, the second upper ring beam is also provided with a second spoke plate extending along the conical surface of the cutter disc main body to the lower beam, and the lower beam is provided with a first spoke plate extending along the conical surface of the cutter disc main body to the second upper ring beam, and the first spoke plate and the second spoke plate are both provided with spoke plate welding side plates, and the spoke plate welding side plates are provided with second bolt holes, and the second bolt holes are provided with second bolt assemblies for detachably connecting the first spoke plate and the second spoke plate.

[0011] As a preferred solution of the present invention, the lower beam, the upper ring beam and the central reinforcement tube are all welded to the first spoke reinforcement ribs, and the central reinforcement tube and the first upper ring beam are detachably mounted.

[0012] As a preferred solution of the present invention, six cutterhead assembly modules are provided, and the cutterhead assembly modules are abutted in sequence along the outer circumference of the first upper ring beam.

[0013] As a preferred solution of the present invention, the cutterhead body is provided with multiple booster pumps and a slurry pump located in the central reinforcement pipe. The booster pump is connected to a water supply pipeline, which is connected to the booster pump and is provided with an external jet port for cleaning the rock debris cut off by the cutterhead and driving the rock debris and mud to mix, and an internal jet port for preventing rock debris from gathering at the inlet of the slurry pump. The slurry pump is provided with a slag discharge pipeline for discharging the slurry.

[0014] As a preferred solution of the present invention, the booster pump and the water supply pipeline are connected through a central rotary joint. The outer ring of the adapter of the central rotary joint is set on the central reinforcement pipe and is connected to the booster pump through a pipeline. The inner ring of the adapter of the central rotary joint is connected to the water supply pipeline.

[0015] As a preferred solution of the present invention, three booster pumps are provided, and the three booster pumps are evenly distributed around the axis of the cutter head body.

[0016] Beneficial effects of the present invention:

[0017] 1. After the excavation work of the full-section vertical shaft boring machine cutterhead of the present invention is completed, in the face of the reduction in the diameter of the shaft wall caused by the pipe segment reinforcement or grouting reinforcement of the shaft wall during the excavation process, it is only necessary to disassemble the assembly parts in the cutterhead assembly module on the cutterhead to reduce the overall diameter of the cutterhead, so that the cutterhead body and the assembly module can be lifted out of the shaft separately. When used next time, they can be reassembled to realize the recycling of the cutterhead, thereby reducing the cost of excavation construction.

[0018] 2. The cutterhead of the full-section vertical shaft boring machine of the present invention is equipped with a slurry pump and a booster pump. The arrangement of internal and external jet ports enables the mud residue generated during the excavation process of the cutterhead to be better cleaned and mixed, thereby improving the slag discharge efficiency and accelerating the excavation construction progress.

[0019] 3. When the slurry pump and the booster pump are installed in the cutterhead of the full-section vertical shaft boring machine of the present invention, the booster pump is rotatably arranged around the slurry pump, and the booster pump is connected to the water supply pipeline through the central rotary joint. Compared with the nested pipeline arrangement, the structure is simple and maintenance is convenient. In addition, during the operation of the cutterhead, the water supply pipeline and the slurry pump discharge pipeline will not be entangled, reducing the probability of discharge failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the exploded cutter head of the present invention;

[0021] Figure 2 It is an axonometric drawing of the cutter head main structure assembly of the present invention;

[0022] Figure 3 This is an exploded schematic diagram of the cutterhead body and cutterhead assembly module of the present invention;

[0023] Figure 4This is a schematic diagram of the structure of the cutterhead assembly module of the present invention;

[0024] Figure 5 An axonometric view of the cutterhead assembly according to the present invention;

[0025] Figure 6 A schematic diagram of the arrangement of the hob on the cutterhead of the present invention;

[0026] Figure 7 Schematic diagram of the arrangement position of the external jet port of the present invention;

[0027] Figure 8 Schematic diagram of the position of the booster pump and the inner jet port of the present invention;

[0028] Figure 9 This is a schematic diagram of the installation position of the slurry pump of the present invention;

[0029] Figure 10 A top view of the main structure of the cutter head implemented in the present invention;

[0030] Figure 11 This is a schematic diagram of the central rotary joint pipeline connection;

[0031] Figure 12 A partial view of the web-plate welded side plate butt joint according to the present invention;

[0032] Figure 13 This is a schematic diagram of the arrangement of the main cutting tools for hard rock formations on the cutterhead of the present invention;

[0033] Figure 14 This is a schematic diagram of the operation of the cutter head of the present invention in a slag discharge system.

[0034] Markings in the figure: 1. Lower support plate, 2. Lower ring beam, 3. Lower beam, 4. First upper ring beam, 5. Lower ring beam reinforcement, 6. Lower beam reinforcement, 7. Center reinforcement pipe, 8. Main reinforcement of spoke plate, 9. Auxiliary reinforcement of first spoke plate, 10. Auxiliary reinforcement of second spoke plate, 11. Reinforcement of first spoke, 12. Long spoke, 13. Spoke of assembly block, 14. Short spoke, 15. Cutter head assembly module, 16. Spoke welding side plate, 17. First spoke, 18. Second spoke, 19. Second upper ring beam, 20. Second spoke reinforcement rib, 21. outer jet port, 22. inner jet port, 23. booster pump, 24. upper ring beam welding fixing plate, 25. slurry pump, 26. spoke plate welding side plate, 27. center hob, 28. disc hob, 29. arc scraper, 30. central rotary joint, 31. slurry separation device, 32. mud storage tank, 33. water tank, 34. hanging basket, 35. winch, 36. mud settling tank, 37. external water source, 38. water supply pipeline, 39. slag discharge pipeline, 40. outer ring of adapter, 41. inner ring of adapter. DETAILED DESCRIPTION

[0035] The present invention is further described below with reference to the accompanying drawings and specific embodiments. In the description of the present invention, it should be noted that, unless otherwise specified, "plurality" means two or more; the directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "inside", "outside", "front end", "rear end", "head", and "tail" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention.

[0036] The present invention provides a specific embodiment of a cutterhead of a full-section vertical shaft boring machine:

[0037] Combine Figures 1 to 14 shown.

[0038] The cutterhead of the full-section vertical shaft boring machine in this embodiment includes a cutterhead body, Figure 2 As shown, the cutterhead body includes a lower support plate 1, a lower ring beam 2, a lower beam 3, a first upper ring beam 4, a lower ring beam reinforcement rib 5, a lower beam reinforcement rib 6, a central reinforcement pipe 7, a spoke plate main reinforcement rib 8, a first spoke plate auxiliary reinforcement rib 9, a second spoke plate auxiliary reinforcement rib 10 and a first spoke reinforcement rib 11, a lower support plate 1, a lower ring beam 2, a lower beam 3, a first upper ring beam 4, a lower ring beam reinforcement rib 5, a lower beam reinforcement rib 6, a central reinforcement pipe 7, a spoke plate main reinforcement rib 8, a first spoke plate auxiliary reinforcement rib 9, a second spoke plate auxiliary reinforcement rib 10 and a first spoke reinforcement rib 11, 0 and the first spoke reinforcement rib 11 are coaxially arranged, and the cutter head body as a whole is in the shape of a positive cone with a vertex angle of 90°. In order to reinforce the structure, the lower support plate 1 and the lower ring beam 2 are connected and welded together with the lower ring beam reinforcement rib 5, and the lower ring beam 5 and the lower beam 4 are connected and welded together with the lower beam reinforcement rib 6. The lower beam and the upper ring beam are connected by the first spoke reinforcement rib 11, and the lower beam 3, the central reinforcement tube 7 and the first upper ring beam 4 are connected and welded together with the spoke plate main reinforcement rib 8 and the first spoke reinforcement rib 11.

[0039] A plurality of detachable cutterhead assembly modules 15 are provided on the first upper ring beam 4. Figure 4 As shown, in order to adapt to the working conditions of different formations, the cutterhead assembly module 15 includes a second upper ring beam 19, which is used to be evenly distributed along the circumference of the first upper ring beam 4 to form an outer contour with a diameter greater than that of the first upper ring beam 4 when the cutterhead is working. Figure 3 and Figure 5 As shown, the outer contour diameter formed by multiple cutter disc assembly modules 15 during the operation of the cutter disc is larger than the outer contour diameter of the first upper ring beam 4, that is, after the cutter disc assembly module 15 is installed, the outer contour diameter of the cutter disc as a whole formed by the operation of the cutter disc assembly module 15 is the largest.

[0040] When this specific implementation is carried out, Figure 4 As shown, an assembly block spoke 13 is provided on the second upper ring beam 19, a long spoke 12 is provided between the lower support plate 1 and the assembly block spoke 13, and a short spoke 14 is provided between the lower ring beam 2 and the assembly block spoke 13. The long spoke 12 and the assembly block spoke 13 together form a carrier for installing the disc roller 28, and the short spoke 14 and the assembly block spoke 13 also together form a carrier for installing the disc roller. It can be understood that an arc scraper 29 can also be installed at the end of the assembly block spoke 13 away from the long spoke 12 or the corresponding short spoke 14.

[0041] A second spoke reinforcement rib 20 is provided on the second upper ring beam 19, and a spoke welding side plate 16 is provided on both the first spoke reinforcement rib 11 and the second spoke reinforcement rib 20. A first bolt hole is provided on the spoke welding side plate 16, and a first bolt assembly is provided in the first bolt hole. The first bolt assembly is used to achieve a detachable connection between the first spoke reinforcement rib 11 and the second spoke reinforcement rib 20.

[0042] During the shaft excavation process, the diameter of the shaft wall is reduced due to the reinforcement of the pipe segments or the grouting reinforcement. After the excavation is completed, it is only necessary to remove the assembly parts in the cutterhead assembly module on the cutterhead to reduce the overall diameter of the cutterhead. The assembly module and the cutterhead body can be lifted out of the shaft separately. When they are used again, they can be reassembled. The operation is convenient, the cutterhead can be recycled, and the cost of excavation construction is greatly reduced.

[0043] Among them, during implementation, the lower beam 3, the upper ring beam 4 and the central reinforcement tube 7 can be welded to the first spoke reinforcement rib 11, the central reinforcement tube 7 and the first upper ring beam 4 can be detachably installed by bolts, the first upper ring beam 4 is connected to the upper driving device fixed on the well wall by bolts, the first upper ring beam 4 and the second upper ring beam 19 are respectively welded with upper ring beam welding fixing plates 24 at corresponding positions, and the upper ring beam welding fixing plates 24 are connected by bolts.

[0044] When applying, combine Figure 3 As shown, there are a total of six cutterhead assembly modules 15 in this embodiment, and they are evenly distributed on the outer periphery of the first upper ring beam 4. After installation, the six cutterhead assembly modules 15 are sequentially abutted along the outer periphery of the first upper ring beam 4, that is, after assembly, the six cutterhead assembly modules 15 completely cover the outer periphery of the first upper ring beam 4.

[0045] Among them, combined Figure 4As shown, a second spoke 18 is also provided on the second upper ring beam 19, and the second spoke 18 extends along the tapered surface of the cutter head body toward the lower beam 3. A first spoke 17 is provided on the lower beam 3, and the first spoke 17 extends along the tapered surface of the cutter head body toward the second upper ring beam 19. Both the first spoke 17 and the second spoke 18 are provided with spoke welding side plates 26, which are usually fixed to the first spoke 17 and the second spoke 18 by welding. A second bolt hole is provided on the spoke welding side plate 26, and a plurality of second bolt holes can be provided. A second bolt assembly is provided in the second bolt hole. After the second bolt assembly is installed, the spoke welding side plates 26 are detachably connected to each other, thereby realizing a detachable connection setting of the first spoke 17 and the second spoke 18, which not only ensures the detachability of the assembly module, but also strengthens the overall strength of the cutter head, so that it can smoothly adapt to vertical shaft excavation under various working conditions.

[0046] In this embodiment, when installing the cutter, the main rock breaking cutter on the cutter head is mainly the disc cutter 28, wherein the arrangement position of the disc cutter 28 is at the intersection of the Archimedean spiral and the six spokes. Figure 6 As shown, the trajectory equation of the Archimedean spiral is:

[0047] x=*cos(2*pi*t)

[0048] y=*sin(2*pi*t).

[0049] The disc cutter 28 can be a universal cutter, which usually includes a cutter body, a cutter shaft and a cutter holder. The cutter holder is positioned on the spoke according to the above-mentioned position. The size of the disc cutter 28 can be selected according to actual needs.

[0050] A center cutter 27 can be set on the lower support plate 1. The center cutter 27 consists of a right center insert cutter and a cutter holder. The cutter holder is connected to the lower support plate 1 by welding, and the center insert cutter and the cutter holder are connected by bolts. The center cutter 27 is mainly used for cutter head guidance and excavation and rock breaking.

[0051] Combine Figure 13 As shown, an arc scraper 29 can be installed at one end of the spoke 13 of the assembly block of the cutter disc. The arc scraper 29 is used to clean the rock debris on the maximum working radius surface of the cutter disc. When the arc scraper 29 is set, a general arc scraper setting method can be adopted. For example, the arc scraper 29 includes a scraper seat and a scraper body. The scraper seat is welded to the spoke, and the scraper body and the scraper seat are connected by bolts for easy replacement.

[0052] When the cutterhead of this embodiment is used to construct soft rock and soft soil, the cutter has poor rock breaking ability and low rock breaking efficiency for these two types of formations. In this case, cutting knives can be installed in the installation spaces between the disc cutters 28 on both sides of the spokes, and toothed cutters can be installed on the surface of the first spoke 17 to improve the rock breaking efficiency of the cutterhead. That is, different tools can be installed according to the actual needs of the excavation working conditions.

[0053] Combine Figure 8 and Figure 9 As shown, in the cutter head body of this embodiment, a slurry pump 25 and multiple booster pumps 23 are provided in the cutter head body. The slurry pump 25 is hoisted in the central reinforcement pipe 7, and the booster pump 23 is arranged on the cutter head body and rotates with the cutter head body. The booster pump 23 is connected to a water supply pipe 38, and an outer jet port 21 and an inner jet port 22 are provided in communication with the booster pump 23. Among them, the outer jet port 21 is used to clean the rock debris cut by the cutter head and drive the rock debris and mud to mix. The inner jet port 22 is used to prevent the rock debris from accumulating at the entrance of the slurry pump 25. A slag discharge pipe 39 for discharging slurry is provided on the slurry pump 25. The generated rock debris is mixed with the mud and then transported out of the cutter head to the upper platform of the tunneling machine by the slurry pump 25 so that the slurry can be separated and then lifted out of the well. In addition, the conical shape and the hollow top structure of the cutter head can better drive the mixing of rock debris and mud during operation, which is more conducive to the slurry pump 25 to transport the slurry to the upper slurry separation system.

[0054] During installation, the booster pump 23 can be placed on the first spoke reinforcement rib 11 at the center of the cutter head. Figure 11 As shown, three booster pumps 23 are installed, and the angle between the three booster pumps 23 is 120°, which is used to provide high-pressure water flow for the inner and outer jet ports 21. The outer jet port 21 and the inner jet port 22 are connected by a water supply pipe 38 and a three-way joint. In order to ensure that the positions of the inner and outer jet ports 21 remain unchanged, the water supply pipe 38 connecting the inner and outer jet ports can be fixed to the tool holder structure according to actual conditions.

[0055] In this embodiment, the booster pump 23 and the water supply pipe 38 are connected through the central rotary joint 30. The outer ring 40 of the adapter of the central rotary joint 30 rotates with the booster pump 23 and the cutter disc, and the inner ring 41 of the adapter does not rotate. This can effectively solve the problem of entanglement between the water supply pipe 38 and the slag discharge pipe 39 of the slurry pump 25, and reduce the probability of failure.

[0056] Combine Figure 9 、 Figure 11 and Figure 14As shown, when the cutterhead is used in the slag discharge system of the tunnel boring machine, the slag discharge system of the tunnel boring machine includes a slurry separation device 31 arranged on the intermediate platform of the tunnel boring machine, a water tank 33 arranged on the middle platform of the tunnel boring machine, an external water source 37 arranged on the ground, and a winch 35 arranged on the ground. The water used by the booster pump 23 is transported from the external water source 37 to the water tank 33 on the middle platform of the tunnel boring machine by the pump. The water supply pipeline 38 connects the water tank 38 and the booster pump 23. The water in the water tank 33 enters the cutterhead slag discharge system and is discharged from the inner jet port 22 and the outer jet port 21 respectively after being acted upon by the booster pump 23.

[0057] The slurry separation device 31 is connected to the slurry pump 25 by a slag discharge pipeline 39. The slurry is pumped to the slurry separation device 31 by the slurry pump 25. The separated solid slag enters the hanging basket 34 and is driven by the winch 35 to be lifted out of the vertical shaft. The slurry enters the mud storage tank 32. The water in the mud storage tank 32 is pumped to the mud sedimentation tank 36 on the ground. The mud can be directly discharged into the vertical shaft for secondary recycling. As the depth of the vertical shaft increases, when the slurry pump on the platform cannot pump the mud to the ground at one time, a slurry pump can be connected in series on the slag discharge pipeline to increase the pumping capacity.

[0058] It should be noted that the parts not described in detail herein are prior art, and the above embodiments are only used to illustrate the present invention, but the present invention is not limited to the above embodiments. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention fall within the scope of protection of the present invention.

Claims

1. A cutterhead of a full-section vertical shaft boring machine, comprising a cutterhead body and a cutting tool arranged on the cutterhead body, wherein the cutterhead body comprises a first upper ring beam (4), a lower beam (3), a lower ring beam (2) and a lower support plate (1) which are coaxially arranged in a conical shape, the upper ring beam (4) and the lower beam (3) being coaxially provided with a central reinforcement pipe (7), characterized in that: A plurality of detachable cutterhead assembly modules (15) are provided on the first upper ring beam (4); the outer contour diameter formed by the plurality of cutterhead assembly modules (15) during the operation of the cutterhead is larger than the outer contour diameter of the first upper ring beam (4); The cutterhead assembly module (15) comprises a second upper ring beam (19) which is evenly distributed along the circumference of the first upper ring beam (4) to form a diameter larger than the outer contour of the first upper ring beam (4); the second upper ring beam (19) is provided with an assembly block spoke (13) extending along the tapered surface of the cutterhead body toward the lower beam (3); long spokes (12) for forming a carrier for mounting a disc-shaped roller (28) together with the assembly block spokes are provided between the lower support plate (1) and the assembly block spokes (13); short spokes (14) for forming a carrier for mounting a disc-shaped roller (28) together with the assembly block spokes (13) are provided between the lower ring beam (2) and the assembly block spokes (13); ), the lower support plate (1) and the lower ring beam (2) are connected via the lower ring beam reinforcement rib (5), the lower ring beam (2) and the lower beam (3) are connected via the lower beam reinforcement rib (6), the lower beam (3) and the upper ring beam (4) are connected via the first spoke reinforcement rib (11), the second upper ring beam (19) is further provided with a second spoke reinforcement rib (20), the first spoke reinforcement rib (11) and the second spoke reinforcement rib (20) are both provided with a spoke welding side plate (16), the spoke welding side plate (16) is provided with a first bolt hole, and a first bolt assembly for detachably connecting the first spoke plate (17) and the second spoke plate (18) is provided in the first bolt hole.

2. A cutterhead for a full-face shaft boring machine according to claim 1, characterized in that: The second upper ring beam (19) is further provided with a second spoke plate (18) extending along the tapered surface of the cutter disc body toward the lower beam (3); a first spoke plate (17) extending along the tapered surface of the cutter disc body toward the second upper ring beam (19) is provided on the lower beam (3); the first spoke plate (17) and the second spoke plate (18) are both provided with spoke plate welding side plates (26); a second bolt hole is provided on the spoke plate welding side plate (26); a second bolt assembly for detachably connecting the first spoke plate (17) and the second spoke plate (18) is provided in the second bolt hole.

3. A cutterhead for a full-face shaft boring machine according to claim 1, characterized in that: The lower beam (3), the upper ring beam (4) and the central reinforcement tube (7) are all welded to the first spoke reinforcement rib (11), and the central reinforcement tube (7) and the first upper ring beam (4) are detachably mounted.

4. A cutterhead for a full-face shaft boring machine according to claim 1, characterized in that: Six cutterhead assembly modules (15) are provided, and the cutterhead assembly modules (15) abut against the outer circumference of the first upper ring beam (4) in sequence.

5. A cutterhead for a full-face shaft boring machine according to any one of claims 1 to 4, characterized in that: The cutterhead body is provided with a plurality of booster pumps (23) and a slurry pump (25) located in a central reinforcement pipe (7). The booster pump (23) is connected to a water supply pipe (38). The booster pump (23) is connected to an outer jet port (21) for cleaning rock debris cut by the cutterhead and driving the rock debris and mud to mix, and an inner jet port (22) for preventing rock debris from gathering at the inlet of the slurry pump (25). The slurry pump (25) is provided with a slag discharge pipe (39) for discharging slurry.

6. A cutterhead for a full-face shaft boring machine according to claim 5, characterized in that: The booster pump (23) is connected to the water supply pipeline (38) via a central rotary joint (30); an outer ring (40) of the central rotary joint (30) is arranged on the central reinforcement pipe (7) and is connected to the booster pump (23) via a pipeline; an inner ring (41) of the central rotary joint (30) is connected to the water supply pipeline (38).

7. The cutterhead of a full-face shaft boring machine according to claim 5, characterized in that: Three booster pumps (23) are provided, and the three booster pumps (23) are evenly distributed around the axis of the cutter head body.

Images