Shield tunneling machine tool bit muck improvement system

Abstract

The invention discloses a shield tunneling machine tool bit muck improvement system which comprises a cutterhead and a partition plate arranged behind the cutterhead, a soil cabin is formed between the cutterhead and the partition plate, a plurality of valve bodies and a plurality of pipelines are arranged on the partition plate, one end of each pipeline is connected with the outlet end of the corresponding valve body in a one-to-one correspondence mode, and the other end of each pipeline is connected with a discharging pipe. Nozzles are arranged at the discharging ends of the discharging pipes, the nozzles of one part of the discharging pipes are located in the gap between the cutter head and the top of the partition plate, the nozzles of the other part of the discharging pipes are located on the upper portion in the soil bin, a plurality of feeding devices used for supplying different materials are arranged behind the partition plate, and the inlet ends of the valve bodies are connected with the corresponding feeding devices. The muck improvement system for the cutter head of the shield tunneling machine further comprises a control module, all the valve bodies are electrically connected with the control module, and the control module opens and closes the valve bodies according to instructions. The muck improvement system for the cutter head of the shield tunneling machine has multiple functions and is not easy to block and wear, the service life is prolonged, and the tunneling efficiency and the automation degree are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of shield machines, and in particular to a shield machine cutter head slag improvement system. Background Art

[0002] Most underground tunnel construction projects are constructed using shield machines. The front end of the shield excavator is equipped with a cutterhead, and a partition is provided behind the cutterhead. A soil compartment is formed between the cutterhead and the partition. In order to improve the slag, a foam device is generally provided on the cutterhead to improve the slag cut by the cutterhead. For example, the tunnel construction machinery and equipment disclosed in the Chinese patent document with application number 201220638697.1 specifically relates to a shield machine soil improvement foam device, including a foam nozzle, a foam pipe seat, a foam pipe and a tee. The horizontal pipe of the foam pipe is connected to the foam inlet pipe through the tee, the front end of the foam horizontal pipe is connected to the foam nozzle through the foam pipe seat, and the rear end of the foam horizontal pipe is provided with a blocking block. The foam nozzle is composed of a steel pressure plate and a nylon plate located on the rear side of the steel pressure plate fixed to the foam pipe seat. A gasket is provided between the nylon plate and the foam pipe seat, and a cross groove is provided on the foam plate. This tunnel construction machinery and equipment has the following deficiencies: 1) During the construction process, the soil cut by the cutterhead in the composite strata at the tunnel face is squeezed and ground, resulting in gravel-like soil. This often causes the foam device to become clogged and wear out. Long-term non-use of foam has a significant impact on shield tunneling efficiency and cutter wear. 2) The foam device can only be used to spray foam in front of the cutterhead. It has a single function and cannot meet the requirements of adding water to the soil tank and building a mud film on the tunnel face. 3) The overall degree of automation is low and the efficiency is poor. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a shield machine cutter head slag improvement system which has multiple functions, is not prone to clogging and wear, and has improved service life, excavation efficiency and automation level.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: A shield machine cutter head slag improvement system includes a cutter disc and a partition arranged behind the cutter disc, a soil compartment is formed between the cutter disc and the partition, a plurality of valve bodies and a plurality of pipes are provided on the partition, one end of each of the pipes is connected to the outlet end of each valve body in a one-to-one correspondence, and the other end of each of the pipes is connected to a discharge pipe, the discharge end of the discharge pipe is provided with a nozzle, the nozzle of one part of the discharge pipe is located in the gap between the cutter disc and the top of the partition, and the nozzle of the other part of the discharge pipe is located in the upper part of the soil compartment, a plurality of feeding devices for supplying different materials are provided behind the partition, the inlet end of each valve body is connected to the corresponding feeding device, the shield machine cutter head slag improvement system also includes a control module, each of the valve bodies is electrically connected to the control module, and the control module switches the valve body according to instructions.

[0005] As a further improvement of the above technical solution: The valve bodies have different specifications.

[0006] The valve body is a ball valve.

[0007] The pipeline is fixed on the partition plate through a fixing piece.

[0008] The pipeline is located on the side of the partition facing the soil compartment.

[0009] The pipelines are distributed within a 120° range on the upper portion of the partition.

[0010] The depth of the soil chamber is set to h, and the nozzle located at the upper part of the soil chamber is 2 / 3h away from the bottom surface of the soil chamber.

[0011] The discharge pipe is an alloy steel pipe.

[0012] The inlet end of the valve body is connected to the corresponding feeding device through a hose.

[0013] The two ends of the pipeline are respectively connected to the discharge pipe and the valve body through elbows.

[0014] Compared with the prior art, the advantages of the present invention are: When the shield machine cutter head slag improvement system of the present invention is operating, the shield construction team selects a reasonable pipeline mode according to the construction conditions. If a mud film needs to be established on the tunnel face, the control module receives an instruction to open the valve body connected to the feeding device for supplying bentonite, and sprays bentonite to the tunnel face outside the cutter disc through the corresponding nozzles between the cutter disc and the top of the partition to form a mud film; if in the normal excavation process, the control module receives an instruction to open the valve body connected to the feeding device for supplying foaming agent, and sprays foam to the tunnel face outside the cutter disc through the corresponding nozzles between the cutter disc and the top of the partition, thereby reducing wear, protecting the cutter disc of the shield machine, reducing wear, and improving construction efficiency. In addition, foam can also be sprayed onto the slag in the soil compartment through the corresponding nozzles on the upper part of the soil compartment to improve the fluidity of the slag and facilitate outward transportation; in soft soil with high viscosity, when the amount of water added to the shield machine soil bin is insufficient, the control module receives an instruction to open the valve body connected to the feeding device for water supply, and adds water to the soil compartment through the corresponding nozzles on the upper part of the soil compartment. First, the nozzle is not set on the cutterhead, so it is not easy to get clogged or worn, which improves the service life and excavation efficiency; second, it has multiple functions and can meet the requirements of spraying bentonite, spraying foam, adding water, etc.; third, the switch of the corresponding valve body is controlled by the control module to meet the supply of required materials, thereby improving the degree of automation and construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic cross-sectional view of the shield machine cutter head slag improvement system of the present invention.

[0016] Figure 2 This is another schematic cross-sectional view of the shield machine cutter head slag improvement system of the present invention.

[0017] Figure 3 It is a schematic diagram of the inner structure of the cutter head of the shield machine slag improvement system of the present invention.

[0018] The numbers in the figure represent: 1. Cutterhead; 2. Partition; 3. Soil compartment; 4. Valve body; 5. Pipeline; 51. Fixing parts; 6. Discharge pipe; 7. Nozzle; 8. Hose; 9. Elbow. DETAILED DESCRIPTION

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0022] In the present invention, unless otherwise expressly specified or limited, terms such as "assemble," "connect," "connect," and "fix" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0023] Figures 1 to 3 An embodiment of the shield machine cutter head slag improvement system of the present invention is shown. The shield machine cutter head slag improvement system of this embodiment includes a cutter disc 1 and a partition 2 arranged behind the cutter disc 1. A soil chamber 3 is formed between the cutter disc 1 and the partition 2. A plurality of valve bodies 4 and a plurality of pipes 5 are provided on the partition 2. One end of each pipe 5 is connected to the outlet end of each valve body 4 in a one-to-one correspondence. The other end of each pipe 5 is connected to a discharge pipe 6. The discharge end of the discharge pipe 6 is provided with a nozzle 7. The nozzle 7 of a part of the discharge pipe 6 is located in the gap between the cutter disc 1 and the top of the partition 2, and the nozzle 7 of the other part of the discharge pipe 6 is located in the upper part of the soil chamber 3. A plurality of feeding devices for supplying different materials are provided behind the partition 2. The inlet end of each valve body 4 is connected to the corresponding feeding device. The shield machine cutter head slag improvement system also includes a control module. Each valve body 4 is electrically connected to the control module. The control module switches the valve body 4 according to instructions.

[0024] When the shield machine cutter head soil improvement system is in operation, the shield construction team selects a reasonable pipeline mode according to the construction conditions. If it is necessary to establish a mud film on the tunnel face, the control module receives a command to open the valve body 4 connected to the feeding device for supplying bentonite, and sprays bentonite to the tunnel face outside the cutter head 1 through the corresponding nozzle 7 between the cutter head 1 and the top of the partition 2 to form a mud film; if it is in the normal excavation process, the control module receives a command to open the valve body 4 connected to the feeding device for supplying foaming agent, and sprays the foaming agent through the nozzle 7 between the cutter head 1 and the top of the partition 2 to form a mud film. The corresponding nozzles 7 between the parts spray foam onto the tunnel face outside the cutterhead 1, reducing wear, protecting the cutterhead 1 of the shield machine, reducing wear and improving construction efficiency. In addition, foam can also be sprayed onto the slag in the soil compartment 3 through the corresponding nozzles 7 on the upper part of the soil compartment 3 to improve the fluidity of the slag and facilitate outward transportation. In soft soil with high viscosity, when the amount of water added to the soil compartment of the shield machine is insufficient, the control module receives an instruction to open the valve body 4 connected to the feeding device for water supply, and add water to the soil compartment 3 through the corresponding nozzles 7 on the upper part of the soil compartment 3.

[0025] The shield machine cutter head soil improvement system has the following advantages: first, the nozzle 7 is not set on the cutter disc 1, which is not easy to be clogged and worn, thereby improving the service life and excavation efficiency; second, it has multiple functions and can meet the requirements of spraying bentonite, spraying foam, adding water, etc.; third, the switch of the corresponding valve body 4 is controlled by the control module to meet the supply of required materials, thereby improving the degree of automation and construction efficiency.

[0026] Furthermore, in this embodiment, the valve body 4 is a ball valve, specifically an electric ball valve, which is convenient for controlling the switch.

[0027] Furthermore, in this embodiment, the pipe 5 is secured to the partition 2 via a fixing member 51. Preferably, multiple fixing members 51 are provided, arranged along the length of the pipe 5, with one fixing member 51 positioned at appropriate intervals. More preferably, the fixing members 51 are positioned as latches. Both the fixing members 51 and the pipe 5 can be welded to the partition 2.

[0028] Furthermore, in this embodiment, the pipe 5 is located on the side of the partition 2 facing the soil chamber 3, which is convenient for installation.

[0029] Furthermore, in this embodiment, Figure 3 As shown, the pipes 5 are distributed within a 120° range on the upper portion of the partition 2 .

[0030] Furthermore, in this embodiment, the depth of the soil chamber 3 is set to h, and the nozzle 7 located at the upper part of the soil chamber 3 is 2 / 3h away from the bottom surface of the soil chamber 3, which is conducive to preventing debris from entering the nozzle 7 and causing the nozzle 7 to be blocked.

[0031] Furthermore, in this embodiment, the discharge pipe 6 is an alloy steel pipe with good quality and durability.

[0032] Furthermore, in this embodiment, the inlet end of the valve body 4 is connected to the corresponding feeding device through a hose 8.

[0033] Furthermore, in this embodiment, both ends of the pipe 5 are connected to the discharge pipe 6 and the valve body 4 respectively through elbows 9. Preferably, the nozzle 7 is made of copper alloy, and the hose 8 is made of rubber high-pressure material.

[0034] Although the present invention has been disclosed above with reference to preferred embodiments, this is not intended to limit the present invention. Any person skilled in the art can, without departing from the scope of the technical solution of the present invention, utilize the technical content disclosed above to make many possible changes and modifications to the technical solution of the present invention, or modify it into an equivalent embodiment with equivalent changes. Therefore, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the scope of protection of the technical solution of the present invention.

Claims

1. A shield machine cutter head soil improvement system, comprising a cutterhead (1) and a partition (2) arranged behind the cutterhead (1), a soil chamber (3) being formed between the cutterhead (1) and the partition (2), characterized in that: The partition (2) is provided with a plurality of valve bodies (4) and a plurality of pipes (5), one end of each pipe (5) is connected to the outlet end of each valve body (4) in a one-to-one correspondence, and the other end of each pipe (5) is respectively connected to a discharge pipe (6), and the discharge end of the discharge pipe (6) is provided with a nozzle (7), the nozzle (7) of a part of the discharge pipe (6) is located in the gap between the cutter head (1) and the top of the partition (2), and the nozzle (7) of the other part of the discharge pipe (6) is located in the upper part of the soil chamber (3), and a plurality of feeding devices for supplying different materials are provided behind the partition (2), and the inlet end of each valve body (4) is connected to the corresponding feeding device. The shield machine cutter head slag improvement system also includes a control module, and each valve body (4) is electrically connected to the control module, and the control module switches the valve body (4) according to instructions.

2. The shield machine cutter head soil improvement system according to claim 1, characterized in that: The specifications of the valve bodies (4) are different.

3. The shield machine cutter head soil improvement system according to claim 1, characterized in that: The valve body (4) is a ball valve.

4. The shield machine cutter head soil improvement system according to claim 1, characterized in that: The pipe (5) is fixed to the partition (2) via a fixing member (51).

5. The shield machine cutter head soil improvement system according to claim 1, characterized in that: The pipe (5) is located on the side of the partition (2) facing the soil compartment (3).

6. The shield machine cutter head soil improvement system according to claim 1, characterized in that: The pipes (5) are distributed within a 120° range on the upper portion of the partition (2).

7. The shield machine cutter head soil improvement system according to any one of claims 1 to 6, characterized in that: The depth of the soil chamber (3) is set to h, and the nozzle (7) located in the upper part of the soil chamber (3) is 2 / 3h away from the bottom surface of the soil chamber (3).

8. The shield machine cutter head soil improvement system according to any one of claims 1 to 6, characterized in that: The discharge pipe (6) is an alloy steel pipe.

9. The shield machine cutter head soil improvement system according to any one of claims 1 to 6, characterized in that: The inlet end of the valve body (4) is connected to the corresponding feeding device via a hose (8).

10. The shield machine cutter head soil improvement system according to any one of claims 1 to 6, characterized in that: Both ends of the pipeline (5) are connected to the discharge pipe (6) and the valve body (4) respectively through elbows (9).

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