Shield machine cutterhead and shield machine

Abstract

The application provides a shield machine cutter head and a shield machine. The shield machine cutter head comprises a disc body, a center body and a plurality of connecting arms distributed along the circumference of the disc body, the connecting arms extend along the radial direction of the disc body, and a construction bin is formed in the connecting arms; a cutter is arranged on the front side of the connecting arm, a sealed bin door for the entry and exit of construction personnel is arranged on the rear side of the connecting arm, the sealed bin door is communicated with the construction bin; the center body is arranged at the center of the disc body, and the center body comprises a fixing seat, a sealing partition plate and a rotating body, the outer wall of the fixing seat is connected to the end of the connecting arm, the fixing seat has a containing cavity, the front end of the fixing seat in the direction of tunneling of the shield machine is provided with a mounting port communicated with the containing cavity, the rear end of the fixing seat is provided with a residue discharging port communicated with the containing cavity, and the side surface of the fixing seat is provided with a working port communicated with the containing cavity and the construction bin, and the sealing partition plate is detachably arranged on the working port. The application provides a shield machine cutter head and a shield machine, and the efficiency of cutter replacement is high.

Description

Technical Field

[0001] This invention relates to the field of tunnel construction, and in particular to a cutterhead for a tunnel boring machine and a tunnel boring machine. Background Technology

[0002] After a period of tunneling, the cutters on the cutterhead of the tunnel boring machine will inevitably wear down, and then the cutters need to be replaced.

[0003] In the prior art, for example, in the scheme entitled "A sealing replacement tooling and method for a tunneling machine's atmospheric pressure cutterhead changing device" with the publication number "CN107139128A", the sealing of the front and rear of the cutterhead is achieved through a gate to complete the atmospheric pressure cutterhead changing operation.

[0004] However, the tool changing process of the aforementioned cutter head is rather cumbersome and has low tool changing efficiency. Summary of the Invention

[0005] To address at least one of the problems mentioned in the background art, the present invention provides a tunnel boring machine cutterhead and a tunnel boring machine with high cutter replacement efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] In a first aspect, the present invention provides a tunnel boring machine cutterhead, comprising a disc body, a central body, and a plurality of connecting arms distributed circumferentially along the disc body, wherein the connecting arms extend radially along the disc body and a construction chamber is formed within the connecting arms.

[0008] Along the direction of tunnel boring machine excavation, the front side of the connecting arm is equipped with a cutter, and the rear side of the connecting arm is equipped with a sealed door for construction personnel to enter and exit. The sealed door is connected to the construction chamber.

[0009] The center body is located at the center of the disk body. The center body includes a fixed seat, a sealing partition and a rotating body. The outer wall of the fixed seat is connected to the end of the connecting arm. The fixed seat has a receiving cavity. The front end of the fixed seat along the tunneling direction of the tunnel boring machine has an installation port that communicates with the receiving cavity. The rear end of the fixed seat has a slag discharge port that communicates with the receiving cavity. The side of the fixed seat has an operating port that communicates with the receiving cavity and the construction chamber. The sealing partition is detachably covered on the operating port to isolate the receiving cavity from the construction chamber.

[0010] The rotating body is rotatably disposed in the receiving cavity, and one side of the rotating body has a mounting part for mounting the center cutter; the mounting part is configured to rotate to a position opposite to the mounting port when the cutter head is working, or to rotate to a position opposite to the sealing partition when the center cutter is being replaced.

[0011] As an optional implementation, the rotating body has a slag outlet on the side opposite to the mounting part that matches the slag discharge port. The slag outlet is connected to the mounting part. When the mounting part rotates to the position opposite to the mounting port, the slag outlet and the slag discharge port are connected to each other so that the slag or slag cut by the central cutter at the mounting part can be discharged through the slag outlet and the slag discharge port.

[0012] As an optional implementation, the central body also includes a driving unit and a connecting end. The driving unit is disposed on the fixed base, and the connecting end is disposed on the rotating body. The driving unit and the connecting end are connected in a transmission manner so as to drive the rotating body to rotate through the driving unit.

[0013] As an optional implementation, a shuttle compartment is provided on the rear side of the connecting arm along the tunneling direction of the tunnel boring machine. The shuttle compartment is connected to the construction compartment, and the sealed compartment door is detachably installed on the shuttle compartment.

[0014] As an optional implementation, the end face of the mounting port is flush with the front face of the disc body along the tunneling direction, and the end face of the slag discharge port is flush with the rear face of the disc body.

[0015] As an optional implementation, the center body also includes a flushing port, which is provided on the sealing partition and is configured to be connected to the flushing device of the tunnel boring machine to flush the interior of the center body.

[0016] As an optional implementation, a hoisting assembly is also included, which is disposed on the inner wall of the construction chamber and is used to hoist the cutting tools on the connecting arm.

[0017] As an optional implementation, it also includes a connecting flange located at the center of the disc body. The connecting flange is fixedly connected to the rear side of multiple connecting arms along the tunneling direction of the shield along the circumference of the disc body. Multiple connecting holes are provided on the connecting flange along its own circumference, and the connecting holes are configured to be connected to the cutterhead drive mechanism of the tunnel boring machine.

[0018] As an optional implementation, it also includes a chute plate, which covers the rear side between two adjacent connecting arms, forming a chute discharge channel between the chute plate and the two adjacent connecting arms, and the two ends of the chute discharge channel are connected to the chute discharge port and the excavation chamber of the tunnel boring machine.

[0019] In a second aspect, the present invention also provides a tunnel boring machine, including the cutterhead of the tunnel boring machine according to any one of the first aspects.

[0020] The shield tunneling machine cutterhead provided by this invention includes a disc body, a central body, and multiple connecting arms distributed circumferentially along the disc body. The connecting arms extend radially along the disc body, forming a construction chamber within each arm. A cutter is positioned on the front side of each connecting arm along the tunneling direction of the shield machine, and a sealed door for personnel to enter and exit is located on the rear side of each connecting arm, communicating with the construction chamber. The central body is located at the center of the disc body and includes a fixed seat, a sealing partition, and a rotating body. The outer wall of the fixed seat is connected to the end of each connecting arm, and the fixed seat has a receiving cavity. The fixed seat extends along the tunneling direction of the shield machine... The front end of the feed direction has an installation port communicating with the receiving cavity, the rear end of the fixed seat has a slag discharge port communicating with the receiving cavity, and the side of the fixed seat has an operating port communicating with the receiving cavity and the construction chamber. A sealing partition is detachably covered on the operating port to isolate the receiving cavity from the construction chamber. The rotating body is rotatably disposed in the receiving cavity, and one side of the rotating body has a mounting part for installing the central cutter. The mounting part is configured to rotate to a position opposite to the mounting port when the cutter head is working, or to rotate to a position opposite to the sealing partition when the central cutter is being replaced.

[0021] When changing cutters, the cutterhead of the tunnel boring machine provided by this invention allows the rotating body to be rotated to a position opposite the mounting part and the sealing partition. The cutterhead is then rotated to bring the connecting arm opposite the sealing partition into a horizontal position, facilitating the standing of construction personnel. The sealed hatch on the rear side of the horizontally positioned connecting arm is opened, allowing construction personnel to enter the construction chamber inside the connecting arm, remove the sealing partition to expose the mounting part opposite the sealing partition, and replace the central cutter installed at the mounting part within the construction chamber. Simultaneously, construction personnel can also replace the cutters on the connecting arm. It can be seen that the cutter replacement structure of the tunnel boring machine cutterhead provided by this invention is compact, the cutter replacement process is convenient, and the cutter replacement efficiency is high. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of a first structure of a tunnel boring machine cutterhead provided in an embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of a second structure of a tunnel boring machine cutterhead provided in an embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of a third structure of a tunnel boring machine cutterhead provided in an embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of a fourth structure of a tunnel boring machine cutterhead provided in an embodiment of the present invention;

[0027] Figure 5 A schematic diagram of a fifth structure of a tunnel boring machine cutterhead provided in an embodiment of the present invention;

[0028] Figure 6 An exploded view of the central body of a tunnel boring machine cutterhead provided in an embodiment of the present invention;

[0029] Figure 7 This is a schematic diagram of a first structure of the central body of a tunnel boring machine cutterhead provided in an embodiment of the present invention;

[0030] Figure 8 This is a schematic diagram of a second structure of the central body of a tunnel boring machine cutterhead provided in an embodiment of the present invention;

[0031] Figure 9 This is a schematic diagram of a third structure of the central body of a tunnel boring machine cutterhead, provided in an embodiment of the present invention.

[0032] Explanation of reference numerals in the attached figures:

[0033] 100-Cutterhead;

[0034] 110-Disc body;

[0035] 120-Centrosome;

[0036] 121-Fixed base;

[0037] 1211 - Mounting port;

[0038] 1212 - Slag discharge port;

[0039] 1213 - Work Port;

[0040] 122 - Sealing partition;

[0041] 123 - Solid of Revolution;

[0042] 1231 - Installation Department;

[0043] 1232 - Slag discharge port;

[0044] 1233 - Center tool;

[0045] 124 - Drive Unit;

[0046] 125 - Connecting end;

[0047] 126 - Flushing interface;

[0048] 127 - Pressure sensor;

[0049] 130 - Connecting arm;

[0050] 131 - Cutting tools;

[0051] 132 - Sealed hatch;

[0052] 133 - Shuttle Cabin;

[0053] 140 - Lifting assembly;

[0054] 150 - Connecting flange;

[0055] 160-Slag chute. Detailed Implementation

[0056] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0057] In this application, the terms “upper,” “lower,” “left,” “right,” “front,” “back,” “top,” “bottom,” “inner,” “outer,” “vertical,” “horizontal,” “lateral,” and “longitudinal” indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are primarily for the purpose of better describing the invention and its embodiments and are not intended to limit the indicated devices, elements, or components to having a specific orientation or to be constructed and operated in a specific orientation.

[0058] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in certain situations to indicate a dependency or connection. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0059] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0060] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0061] In existing technologies, for example, the scheme in publication number "CN107139128A" entitled "A sealing replacement tooling and method for an atmospheric pressure cutterhead changing device of a tunneling machine" uses a gate to achieve sealing before and after the cutterhead, thereby completing the atmospheric pressure cutterhead changing operation. Specifically, during cutterhead changing, it is necessary to remove the cutter cylinder on which the cutter is installed, the rear support of the sealing cylinder, and the components at the top of the support cylinder, thereby removing the support cylinder and the rear support of the cylinder from the cutter arm beam of the tunnel boring machine. Finally, the entire atmospheric pressure cutterhead changing device is lifted out of the cutter arm beam of the tunnel boring machine to the ground for sealing disassembly and replacement. This cutterhead changing process is relatively complicated and has low efficiency.

[0062] In view of this, the present invention provides a shield tunneling machine cutterhead, including a disc body, a central body, and a plurality of connecting arms distributed circumferentially along the disc body. The connecting arms extend radially along the disc body, and a construction chamber is formed inside the connecting arms. In the direction of shield tunneling, a cutter is provided on the front side of the connecting arm, and a sealed chamber door for construction personnel to enter and exit is provided on the rear side of the connecting arm. The sealed chamber door and the construction chamber are connected. The central body is located at the center of the disc body and includes a fixed seat, a sealing partition, and a rotating body. The outer wall of the fixed seat is connected to the end of the connecting arm. The fixed seat has a receiving cavity. The front end of the fixed seat in the direction of shield tunneling has an installation port communicating with the receiving cavity. The rear end of the fixed seat has a slag discharge port communicating with the receiving cavity. The side of the fixed seat has a working port communicating with the receiving cavity and the construction chamber. The sealing partition is detachably covered on the working port to isolate the receiving cavity and the construction chamber. The rotating body is rotatably disposed in the receiving cavity. One side of the rotating body has a mounting part for installing the central cutter. When changing cutters, the cutterhead of the tunnel boring machine provided by this invention allows the rotating body to be rotated to a position opposite the mounting part and the sealing partition, and the cutterhead to be rotated so that the connecting arm opposite the sealing partition is in a horizontal position, making it convenient for construction personnel to stand. The sealing hatch on the rear side of the horizontally positioned connecting arm is opened, and the construction personnel can enter the construction chamber inside the connecting arm through the sealing hatch, remove the sealing partition to expose the mounting part opposite the sealing partition, and the construction personnel can replace the central cutter installed at the mounting part in the construction chamber. At the same time, the construction personnel can also replace the cutters on the connecting arm. The cutter replacement process is convenient and efficient.

[0063] Figure 1 This is a schematic diagram of a first structure of a tunnel boring machine cutterhead provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of a second structure of a tunnel boring machine cutterhead provided in an embodiment of the present invention; Figure 3This is a schematic diagram of a third structure of a tunnel boring machine cutterhead provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of a fourth structure of a tunnel boring machine cutterhead provided in an embodiment of the present invention; Figure 5 A schematic diagram of a fifth structure of a tunnel boring machine cutterhead provided in an embodiment of the present invention; Figure 6 An exploded view of the central body of a tunnel boring machine cutterhead provided in an embodiment of the present invention; Figure 7 This is a schematic diagram of a first structure of the central body of a tunnel boring machine cutterhead provided in an embodiment of the present invention; Figure 8 This is a schematic diagram of a second structure of the central body of a tunnel boring machine cutterhead provided in an embodiment of the present invention; Figure 9 This is a schematic diagram of a third structure of the central body of a tunnel boring machine cutterhead, provided in an embodiment of the present invention.

[0064] You can refer to this. Figures 1 to 9 This invention provides a tunnel boring machine cutterhead 100, including a disc body 110, a central body 120, and a plurality of connecting arms 130 distributed circumferentially along the disc body 110. The connecting arms 130 extend radially along the disc body 110, and a construction chamber is formed within the connecting arm 130. A cutter 131 is provided on the front side of the connecting arm 130 along the tunnel boring machine's excavation direction, and a sealed chamber door for construction personnel to enter and exit is provided on the rear side of the connecting arm 130. The sealed chamber door and the construction chamber are connected. The central body 120 is located at the center of the disc body 110 and includes a fixed seat 121, a sealing partition 122, and a rotating body 123. The outer wall of the fixed seat 121 is connected to the end of the connecting arm 130, and the fixed seat 121 has a receiving cavity. The front end of the shield tunneling machine along the tunneling direction is provided with an installation port 1211 communicating with the receiving cavity. The rear end of the fixed seat 121 is provided with a slag discharge port 1212 communicating with the receiving cavity. The side of the fixed seat 121 is provided with an operating port 1213 communicating with the receiving cavity and the construction chamber. The sealing partition 122 is detachably covered on the operating port 1213 to isolate the receiving cavity from the construction chamber. The rotating body 123 is rotatably disposed in the receiving cavity. One side of the rotating body 123 has an installation part 1231 for installing the center cutter 1233. The installation part 1231 is configured to rotate to a position opposite to the installation port 1211 when the cutterhead 100 is working, or to rotate to a position opposite to the sealing partition 122 when the center cutter 1233 is replaced.

[0065] The mounting port 1211 is located in front of the cutterhead 100. When the rotating body 123 rotates to the side of the mounting port 1211, the central cutter 1233 is exposed on the front side of the cutterhead 100 through the mounting port 1211, so that the tunnel can be excavated by the rotation of the central cutter 1233. The slag discharge port 1212 is mainly for discharging the slag or soil excavated by the central cutter 1233 into the receiving cavity.

[0066] The shapes of the mounting base and the rotating body 123 can be configured as follows: Figure 6 The spherical rotating body 123 shown has a cavity inside.

[0067] Among them, the end face of the installation port 1211 is flush with the front end face of the disc body 110 along the tunnel boring direction, and the end face of the slag discharge port 1212 is flush with the rear end face of the disc body 110.

[0068] When the cutterhead 100 of the tunnel boring machine provided in this embodiment of the invention is used to replace the cutter 131, the rotating body 123 can be rotated to a position where the mounting part 1231 is opposite to the sealing partition 122, and the cutterhead 100 can be rotated so that the connecting arm 130 opposite to the sealing partition 122 is in a horizontal position to facilitate the construction personnel to stand; the sealing hatch 132 on the rear side of the horizontally positioned connecting arm 130 can be opened, and the construction personnel can enter the construction chamber inside the connecting arm 130 through the sealing hatch 132, remove the sealing partition 122 to expose the mounting part 1231 opposite to the sealing partition 122, and the construction personnel can replace the central cutter 1233 installed at the mounting part 1231 in the construction chamber. At the same time, the construction personnel can also replace the cutter 131 on the connecting arm 130. As can be seen, the cutter head 100 of the tunnel boring machine provided in this embodiment has a compact cutter head 131 replacement structure, convenient cutter head replacement process, and can realize multi-point cutter head replacement at one time (it can simultaneously replace multiple central cutter heads 1233 in the central body 120 and simultaneously replace the cutter head 131 on the connecting arm and the central cutter head 1233 on the central body in the construction chamber). It has high cutter head replacement efficiency and can realize the replacement of the pressure cutter head 100 under normal pressure, making the cutter head replacement process safer.

[0069] Before replacing the cutter head 131, the telescopic device driven by the cutter head 100 can be activated first, so that the cutter head 100 extends a certain distance in the direction of tunneling of the tunnel boring machine, so that the tunnel boring machine can complete the advance excavation. Then, the telescopic device driven by the cutter head 100 can be activated again, so that the cutter head 100 retracts a certain distance in the opposite direction of tunneling, so as to leave a certain construction space between the cutter head 100 and the excavation face, which facilitates the subsequent replacement of the cutter head 131.

[0070] like Figure 6 As shown in the above embodiment, the rotating body 123 can have a slag outlet 1232 that matches the slag discharge port 1212 on the side opposite to the mounting part 1231. The slag outlet 1232 and the mounting part 1231 are connected through the cavity inside the rotating body 123. Thus, when the mounting part 1231 rotates to the position opposite to the mounting port 1211, the slag outlet 1232 and the slag discharge port 1212 are connected, so that the slag or slag cut by the central cutter 1233 at the mounting part 1231 can be discharged from the central body 120 in sequence through the slag outlet 1232 and the slag discharge port 1212.

[0071] In the above embodiments, the central body 120 may further include a driving unit 124 and a connecting end 125. The driving unit 124 is disposed on the fixed base 121, and the connecting end 125 is disposed on the rotating body 123. The driving unit 124 and the connecting end 125 are connected in a transmission manner so as to drive the rotating body 123 to rotate through the driving unit 124. Specifically, the driving unit 124 may be a drive motor, and the connecting end 125 may be configured as follows: Figure 6 The polygonal shaft shown in the figure has its drive end connected to the multi-shaft, thereby driving the rotating body 123 to rotate.

[0072] like Figure 5 As shown in the above embodiment, a shuttle compartment 133 can be provided on the rear side of the connecting arm 130 along the tunneling direction of the tunnel boring machine. The shuttle compartment 133 is connected to the construction compartment, and the sealed compartment door can be detachably installed on the shuttle compartment 133. The shuttle compartment 133 can be located close to the center of the cutterhead 100.

[0073] like Figure 6 As shown in the above embodiment, the central body 120 may also include a flushing port 126. The flushing port 126 may be opened on the sealing partition 122. The flushing port 126 is configured to be connected to the flushing device of the tunnel boring machine. Before opening the sealing partition 122, the interior of the central body 120 can be flushed through the flushing port 126 to clean the slag and gravel on the central cutter 1233, so as to facilitate the subsequent replacement of the central cutter 1233.

[0074] In the above embodiments, a hoisting assembly 140 may also be included. The hoisting assembly 140 is disposed on the inner wall of the construction chamber. The cutting tool 131 on the connecting arm 130 can be hoisted by the hoisting assembly 140 to facilitate the installation and removal of the cutting tool 131.

[0075] like Figure 5 As shown, in the above embodiment, a connecting flange 150 may also be included. The connecting flange 150 is located at the center of the disc body 110. The connecting flange 150 is fixedly connected to the rear side of multiple connecting arms 130 along the shield tunneling direction along the circumference of the disc body 110. Multiple connecting holes are provided on the connecting flange 150 along its own circumference. The connecting flange 150 can strengthen the overall structure of the cutterhead 100 on the one hand, and can be connected to the cutterhead 100 drive mechanism of the shield machine through the connecting holes provided on the connecting flange 150, thereby driving the cutterhead 100 to move as a whole through the cutterhead 100 drive mechanism.

[0076] In the above embodiments, a chute 160 may also be included, which covers the rear side of two adjacent connecting arms 130. A chute channel is formed between the chute 160 and the two adjacent connecting arms 130. The two ends of the chute channel are connected to the slag discharge port 1212 and the excavation chamber of the tunnel boring machine. The slag and rock excavated by the central cutter 1233 can enter the chute channel through the slag discharge port 1212 and the slag outlet 1232, and then enter the excavation chamber through the chute channel.

[0077] In the above embodiments, a pressure sensor 127 can also be installed inside the construction chamber. Specifically, the pressure sensor 127 can be installed on the sealing partition 122. The pressure sensor 127 is connected to a display outside the construction chamber. The pressure inside the construction chamber can be observed through the display. When the pressure is within the safe range, the sealing door 132 can be opened to improve the safety of construction.

[0078] The shield tunneling machine cutterhead 100 provided in this embodiment of the invention includes a disc body 110, a central body 120, and a plurality of connecting arms 130 distributed circumferentially along the disc body 110. The connecting arms 130 extend radially along the disc body 110, and a construction chamber is formed within each connecting arm 130. A cutter 131 is provided on the front side of each connecting arm 130 along the tunneling direction of the shield tunneling machine, and a sealed chamber door for construction personnel to enter and exit is provided on the rear side of each connecting arm 130. The sealed chamber door and the construction chamber are connected. The central body 120 is located at the center of the disc body 110 and includes a fixed seat 121, a sealing partition 122, and a rotating body 123. The outer wall of the fixed seat 121 is connected to the end of the connecting arm 130, and the fixed seat 121 has a receiving cavity. An installation port 1211 communicating with the receiving cavity is provided at the front end along the tunneling direction of the tunnel boring machine. A slag discharge port 1212 communicating with the receiving cavity is provided at the rear end of the fixed seat 121. An operating port 1213 communicating with the receiving cavity and the construction chamber is provided on the side of the fixed seat 121. A sealing partition 122 is detachably covered on the operating port 1213 to isolate the receiving cavity from the construction chamber. A rotating body 123 is rotatably disposed in the receiving cavity. One side of the rotating body 123 has an installation part 1231 for installing the center cutter 1233. The installation part 1231 is configured to rotate to a position opposite to the installation port 1211 when the cutterhead 100 is working, or to rotate to a position opposite to the sealing partition 122 when the center cutter 1233 is being replaced.

[0079] When replacing the cutterhead 131, the shield machine cutterhead 100 provided in this embodiment of the invention allows the rotating body 123 to rotate to a position where the mounting part 1231 is opposite to the sealing partition 122, and the cutterhead 100 to rotate so that the connecting arm 130 opposite to the sealing partition 122 is in a horizontal position, facilitating the standing of construction personnel. The sealed hatch 132 on the rear side of the horizontally positioned connecting arm 130 is opened, allowing construction personnel to enter the construction chamber inside the connecting arm 130 through the sealed hatch 132, remove the sealing partition 122 to expose the mounting part 1231 opposite to the sealing partition 122, and replace the central cutterhead 1233 installed at the mounting part 1231 within the construction chamber. Simultaneously, construction personnel can also replace the cutterhead 131 on the connecting arm 130. It can be seen that the cutterhead 100 of the shield machine provided in this embodiment of the invention has a compact cutterhead 131 replacement structure, a convenient cutterhead replacement process, and high cutterhead replacement efficiency.

[0080] In addition, the present invention also provides a tunnel boring machine (TBM) including the cutterhead 100 of any of the above embodiments. Since the TBM includes the cutterhead 100 of the above embodiments, the cutterhead replacement efficiency of the TBM can be improved, thereby improving the construction efficiency of the TBM.

[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A shield tunneling machine cutterhead, characterized in that, It includes a disc body, a central body, and multiple connecting arms distributed circumferentially along the disc body. The connecting arms extend radially along the disc body, and a construction chamber is formed within each connecting arm. Along the direction of tunnel boring machine excavation, a cutter is provided on the front side of the connecting arm, and a sealed door for construction personnel to enter and exit is provided on the rear side of the connecting arm. The sealed door is connected to the construction chamber. The central body is located at the center of the disk body. The central body includes a fixed seat, a sealing partition, and a rotating body. The outer wall of the fixed seat is connected to the end of the connecting arm. The fixed seat has a receiving cavity. The front end of the fixed seat along the tunneling direction of the tunnel boring machine has an installation port communicating with the receiving cavity. The rear end of the fixed seat has a slag discharge port communicating with the receiving cavity. The side of the fixed seat has an operating port communicating with the receiving cavity and the construction chamber. The sealing partition is detachably covered on the operating port to isolate the receiving cavity from the construction chamber. The rotating body is rotatably disposed in the receiving cavity, and one side of the rotating body has a mounting portion for mounting a central cutting tool; the mounting portion is configured to rotate to a position opposite to the mounting port when the cutter head is in operation, and to rotate to a position opposite to the sealing partition when the central cutting tool is replaced.

2. The tunnel boring machine cutterhead according to claim 1, characterized in that, The rotating body has a slag outlet on the side opposite to the mounting part that matches the slag discharge port. The slag outlet is connected to the mounting part. When the mounting part rotates to a position opposite to the mounting port, the slag outlet and the slag discharge port are connected to each other so that the slag or slag cut by the central cutter at the mounting part can be discharged through the slag outlet and the slag discharge port.

3. The tunnel boring machine cutterhead according to claim 2, characterized in that, The central body further includes a driving unit and a connecting end. The driving unit is disposed on the fixed base, and the connecting end is disposed on the rotating body. The driving unit is connected to the connecting end for transmission, so as to drive the rotating body to rotate through the driving unit.

4. The tunnel boring machine cutterhead according to claim 3, characterized in that, A shuttle compartment is provided on the rear side of the connecting arm along the tunneling direction of the tunnel boring machine. The shuttle compartment is connected to the construction compartment, and the sealed compartment door is detachably installed on the shuttle compartment.

5. The tunnel boring machine cutterhead according to claim 4, characterized in that, The end face of the mounting port is flush with the front end face of the disc body along the tunnel boring direction, and the end face of the slag discharge port is flush with the rear end face of the disc body.

6. The tunnel boring machine cutterhead according to claim 5, characterized in that, The central body also includes a flushing port, which is located on the sealing partition and is configured to be connected to the flushing device of the tunnel boring machine to flush the interior of the central body.

7. The tunnel boring machine cutterhead according to claim 6, characterized in that, It also includes a hoisting assembly, which is disposed on the inner wall of the construction chamber and is used to hoist the cutting tools on the connecting arm.

8. The tunnel boring machine cutterhead according to any one of claims 1-7, characterized in that, It also includes a connecting flange located at the center of the disc body. The connecting flange is fixedly connected to the rear side of multiple connecting arms along the shield tunneling direction along the circumference of the disc body. Multiple connecting holes are provided on the connecting flange along its own circumference, and the connecting holes are configured to be connected to the cutterhead drive mechanism of the tunnel boring machine.

9. The tunnel boring machine cutterhead according to any one of claims 1-7, characterized in that, It also includes a chute plate, which covers the rear side of two adjacent connecting arms, forming a slag discharge channel between the chute plate and the two adjacent connecting arms, and the two ends of the slag discharge channel are connected to the slag discharge port and the excavation chamber of the tunnel boring machine.

10. A tunnel boring machine, characterized in that, Includes the tunnel boring machine cutterhead as described in any one of claims 1-9.

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