Shield tunneling machine cutterhead washing device and shield tunneling machine

Abstract

The utility model relates to the field of shield tunneling machines, in particular to a shield tunneling machine cutterhead washing device and a shield tunneling machine. The flushing pipeline is arranged on the mounting frame and extends from the human cabin to the muddy water cabin; the nozzle is arranged at the tail end of the washing pipeline, the nozzle extends into the foam pipeline and faces the cutter head, and a plurality of open holes are formed in the foam pipeline. According to the shield tunneling machine cutterhead washing device provided by the utility model, the mounting frame is additionally arranged in the human cabin, so that a washing pipeline can be conveniently and directly introduced into the muddy water cabin from the human cabin, and the cutterhead is washed by utilizing the original foam pipeline opening of the muddy water cabin; the mud cake on the cutter head of the shield tunneling machine can be effectively scoured on the basis of not changing the original structure of the shield tunneling machine as much as possible, and the construction safety and progress are improved.

Description

Technical Field

[0001] This utility model relates to the field of tunnel boring machines, and in particular to a tunnel boring machine cutterhead flushing device and a tunnel boring machine. Background Technology

[0002] Mud cake is easily generated during the operation of tunnel boring machine (TBM) cutterheads. The main reason for mud cake formation is the accumulation of fine particles from highly viscous strata (such as clay and silty clay) on the cutterhead surface during tunneling. This, coupled with low cutterhead opening ratio, slow advance speed, or improper use of additives, prevents timely discharge of excavated soil, causing moisture to be squeezed out and form hard clumps. The hazards of mud cake include reduced tunneling efficiency, accelerated cutter wear, increased equipment load, blockage of the muck removal system, and even ground subsidence or tunnel axis misalignment, seriously affecting construction safety and progress. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a shield machine cutterhead flushing device and shield machine, which can effectively flush the mud cake on the shield machine cutterhead without changing the original structure of the shield machine as much as possible, thereby improving construction safety and progress.

[0004] In a first aspect, this utility model provides a shield machine cutterhead flushing device, comprising:

[0005] The mounting bracket is fixed to the bulkhead of the personnel compartment near the mud and water compartment;

[0006] A flushing pipeline is installed on the mounting frame and extends from the man compartment to the mud and water compartment;

[0007] A nozzle is located at the end of the flushing pipe, the nozzle extends into the foam pipe and faces the cutter head, and the foam pipe is provided with several openings.

[0008] Preferably, the nozzle is trumpet-shaped.

[0009] Preferably, the flushing pressure of the flushing pipeline is greater than or equal to 6 bar.

[0010] Preferably, the foam pipe is provided with a plurality of openings.

[0011] Preferably, each of the openings is oriented toward the cutter head.

[0012] Preferably, the mounting bracket is detachably and fixedly connected to the bulkhead of the human cabin.

[0013] Preferably, the mounting bracket is bolted to the bulkhead of the manned cabin.

[0014] Preferably, the flushing pipe is connected to a water tank.

[0015] In a second aspect, the present invention provides a tunnel boring machine, including a cutterhead, a slurry chamber, and a crew compartment, and also includes any of the aforementioned cutterhead flushing devices.

[0016] Preferably, the mud and water chamber is provided with a foam pipe, the foam pipe is provided with a plurality of openings, and the nozzle extends into the foam pipe and faces the cutter head.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] 1. This utility model provides a shield machine cutterhead flushing device. By adding an installation frame to the personnel cabin, it is easy to directly introduce flushing pipes from the personnel cabin to the mud chamber, and use the existing foam pipe openings in the mud chamber to flush the cutterhead. This can effectively flush the mud cake on the shield machine cutterhead without changing the original structure of the shield machine as much as possible, thereby improving construction safety and progress.

[0019] 2. This utility model provides a tunnel boring machine (TBM) that, when equipped with the aforementioned TBM cutterhead flushing device, can effectively flush away the mud cake on the cutterhead, thereby improving construction safety and progress. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the installation of the shield machine cutterhead flushing device described in this utility model.

[0021] Figure 2 This is a cross-sectional view of the shield machine cutterhead flushing device described in this utility model.

[0022] Marked in the image:

[0023] 1-Cutterhead, 2-Mud and water chamber, 3-Mannel chamber, 4-Foam pipe, 41-Opening, 5-Mounting bracket, 6-Flushing pipe, 7-Nozzle. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0025] Unless otherwise specified, the terms "upper," "lower," "left," "right," "center," "inner," and "outer" used in the description of specific embodiments of this utility model to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is usually placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, and for enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0026] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," "parallel," and "coaxial" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, parallel, or coaxial. Slight tilt or deviation is permissible, as long as it does not affect the normal function of the relevant component. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," not that the structure must be perfectly horizontal; a slight tilt is acceptable. "Coaxial" means that two components are arranged as coaxially as possible, allowing them to move coaxially or approximately coaxially when their relative positions change. Alternatively, it can be simplified to mean that the corresponding device / component / element, when arranged in "horizontal," "vertical," "suspended," "parallel," or "coaxial" directions, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. For example, the deviation in the "coaxial" direction is controlled within 0.2-1mm, preferably within 0.2-0.5mm. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0027] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0028] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0029] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "provided with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0030] Example 1

[0031] like Figures 1-2 As shown, a shield tunneling machine cutterhead flushing device includes a mounting frame 5, a flushing pipe 6, and a nozzle 7.

[0032] The mounting bracket 5 is fixed to a wall of the personnel compartment 3, which is located near the mud and water compartment 2. This allows personnel to enter the personnel compartment 3 to install the mounting bracket 5, facilitating its installation. The mounting bracket 5 is used to securely install the flushing pipe 6. Furthermore, in some embodiments, the mounting bracket 5 can be detachably connected to the compartment wall, for example, by bolts, screws, or pins. This further facilitates the installation and removal of the mounting bracket 5, allowing the flushing device to be installed without significantly altering the original tunnel boring machine structure, thus achieving the flushing of the mud cake from the tunnel boring machine cutterhead.

[0033] Furthermore, in some embodiments, the mounting bracket 5 can be installed not only on the man compartment 3, but also on the wall of the mud and water tank 2 near the man compartment 3, which is more conducive to the installation and fixation of the flushing pipe 6.

[0034] Furthermore, in some embodiments, the mounting bracket 5 may be a stainless steel structure.

[0035] The flushing pipe 6 is installed on the mounting frame 5, extending from the manhole 3 to the mud and water chamber 2. Furthermore, the flushing pipe 6 can be connected to a water tank, which can be either the tunnel boring machine's own water tank or an external water tank. The flushing pipe 6 can extend from the manhole to the outside and connect to the external water tank. This invention designates the flushing pipe 6 to be introduced from the manhole 3, facilitating its installation, removal, and maintenance.

[0036] Furthermore, in some embodiments, the flushing pressure of the flushing pipe 6 is greater than or equal to 6 bar, for example, the flushing pressure of the flushing pipe 6 is 6 bar, 7 bar, 8 bar, 10 bar, etc. Generally, the higher the flushing pressure of the flushing pipe 6, the better the flushing effect, and the more beneficial it is to reduce the content of mud cake on the cutterhead of the tunnel boring machine.

[0037] Furthermore, in some embodiments, the flushing pipe 6 can be a stainless steel pipe, a galvanized carbon steel pipe, or an ultra-high molecular weight polyethylene (UHMWPE) pipe, etc.

[0038] The nozzle 7 is located at the end of the flushing pipe 6. The nozzle 7 is used to spray liquid, which may be water, a polymer solution (such as polyacrylamide PAM), or a chemical dispersant (such as a surfactant).

[0039] The mud-water chamber 2 is equipped with a foam pipe 4, which has several openings 41 for spraying foam to reduce the stickiness of the excavated soil. This invention adds an opening to the foam pipe 4, through which a nozzle 7 extends into the foam pipe 4 and is positioned towards the cutterhead 1. Thus, the liquid sprayed from the nozzle 7 can be directly ejected through the openings 41 of the foam pipe 4 and directed towards the cutterhead 1. This invention utilizes the existing foam pipe 4 of the tunnel boring machine to spray liquid for cutterhead scouring. This invention only requires adding an opening to the foam pipe 4, without affecting its normal operation, and can minimize modifications and adverse effects on the original structure of the tunnel boring machine.

[0040] Furthermore, in some embodiments, the nozzle 7 can be designed in a trumpet shape, which can increase the rinsing area and improve the rinsing efficiency.

[0041] Furthermore, in some embodiments, each of the openings 41 of the foam pipe 4 is oriented towards the cutter disc 1, which is more conducive to rinsing the cutter disc and can improve the rinsing effect.

[0042] This utility model provides a shield machine cutterhead flushing device. By adding an installation frame 5 to the manhole 3, it is easy to directly introduce the flushing pipe 6 from the manhole 4 to the mud chamber 2, and use the opening 41 of the original foam pipe 4 in the mud chamber 2 to flush the cutterhead 1. It can effectively flush the mud cake on the shield machine cutterhead 1 without changing the original structure of the shield machine as much as possible, thereby improving construction safety and progress.

[0043] This invention utilizes the existing structure of the tunnel boring machine (TBM) by adding a mounting frame 5, a flushing pipe 6, and a nozzle 7. This minimizes modifications and adverse effects on the original TBM structure. It is applicable not only to the design phase of TBMs but also to the modification and adjustment of existing TBMs. The TBM cutterhead flushing device described in this invention has a simple structure, is easy to install, and after installation, can effectively flush away the mud cake on the TBM cutterhead 1, improving construction safety and progress.

[0044] Example 2

[0045] A tunnel boring machine (TBM) includes a cutterhead 1, a slurry chamber 2, and a personnel compartment 3, wherein the cutterhead 1 and the slurry chamber 2 are arranged adjacent to each other, and the slurry chamber is initially arranged adjacent to the personnel compartment 3, allowing personnel to enter the personnel compartment 3 from the outside. The TBM also includes a cutterhead flushing device as described in Embodiment 1, with a mounting frame 5 fixed to a wall of the personnel compartment 3, the wall being located close to the slurry chamber 2. A flushing pipe 6 is disposed on the mounting frame 5, extending from the personnel compartment 3 to the slurry chamber 2.

[0046] Furthermore, the mud and water chamber 2 is provided with a foam pipe 4, which has several openings 41. The nozzle 7 extends into the foam pipe 4 and faces the cutter head 1. The liquid sprayed by the nozzle 7 can be directly sprayed out through the openings 41 of the foam pipe 4 and directed toward the cutter head 1.

[0047] The tunnel boring machine described in this utility model, after being equipped with a cutterhead flushing device, can effectively flush the mud cake on the cutterhead, thereby improving construction safety and progress.

[0048] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A shield tunneling machine cutterhead flushing device, characterized in that, include: The mounting bracket (5) is fixed to the bulkhead of the man compartment (3) near the mud and water compartment (2); The flushing pipe (6) is installed on the mounting frame (5) and extends from the man compartment (3) to the mud and water compartment (2). A nozzle (7) is located at the end of the flushing pipe (6). The nozzle (7) extends into the foam pipe (4) and faces the cutter head (1). The foam pipe (4) is provided with several openings (41).

2. The shield machine cutterhead flushing device according to claim 1, characterized in that, The nozzle (7) is trumpet-shaped.

3. The shield machine cutterhead flushing device according to claim 1, characterized in that, The flushing pressure of the flushing pipe (6) is greater than or equal to 6 bar.

4. The shield machine cutterhead flushing device according to claim 1, characterized in that, The foam pipe (4) is provided with a plurality of the openings (41).

5. The shield machine cutterhead flushing device according to claim 4, characterized in that, Each of the openings (41) is oriented toward the cutter head (1).

6. The shield machine cutterhead flushing device according to claim 1, characterized in that, The mounting bracket (5) is detachably and fixedly connected to the bulkhead of the human cabin (3).

7. The shield machine cutterhead flushing device according to claim 6, characterized in that, The mounting bracket (5) is bolted to the bulkhead of the human cabin (3).

8. The shield machine cutterhead flushing device according to any one of claims 1-7, characterized in that, The flushing pipe (6) is connected to a water tank.

9. A tunnel boring machine, comprising a cutterhead (1), a slurry chamber (2), and a crew compartment (3), characterized in that, It also includes the shield machine cutterhead flushing device as described in any one of claims 1-8.

10. The tunnel boring machine according to claim 9, characterized in that, The mud tank (2) is provided with a foam pipe (4), the foam pipe (4) is provided with a number of openings (41), and the nozzle (7) extends into the foam pipe (4) and faces the cutter head (1).

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