A mobile shield soil and cutting material mixing and stirring device

Abstract

The application belongs to the technical field of shield soil treatment, and discloses a mobile shield soil and reduction material mixing and stirring device, which comprises a movable base, a stirring system and a driving system are arranged on the base, the driving system is located below the stirring system and is in transmission connection with the stirring system; the stirring system comprises a stirring barrel, a stirring assembly is arranged in the stirring barrel, and the stirring assembly is in transmission connection with the driving system; a plurality of feeding assemblies are arranged at the top end of the stirring barrel, and the feeding assemblies are in communication with the inner cavity of the stirring barrel; the stirring assembly comprises a stirring column in transmission connection with the driving system, a plurality of torque sensors are arranged on the stirring column at equal intervals, and the torque sensors are in transmission connection with the feeding assemblies through a control system. The application has compact structure, can realize efficient and harmless treatment and disposal of shield soil in the shield tunneling process, reduces environmental pollution caused by shield soil, saves the disposal cost of shield soil, and the treated shield soil meets the environmental protection standard and can be recycled.

Description

Technical Field

[0001] This invention belongs to the field of shield tunneling soil treatment technology, and particularly relates to a mobile shield tunneling soil and cutting material mixing and stirring device. Background Technology

[0002] The shield tunneling method is widely used in the construction of infrastructure in major cities due to its advantages such as safety, reliability, speed and economy. However, the shield tunneling process generates a large amount of engineering waste soil. Due to the needs of the shield tunneling process and the geological characteristics of the tunneling strata, the shield soil has a high water content, is not easy to transport, and contains harmful pollutants such as surfactants.

[0003] The shield soil, which is in the form of thin mud or slurry, is prone to landslides during storage, thus affecting the safe storage of the soil stockpile. In addition, during the construction of earth pressure shield tunneling, to protect the cutterhead and increase the plasticity of the soil, organic compounds such as surfactants (commonly known as "foaming agents") are added. Since surfactants are adsorbed into the shield excavated soil, they are then transferred and seeped into the soil and surface water along with the shield excavated soil, and a series of physical, chemical and biological reactions occur. They are either absorbed by plant roots or synthesized and absorbed by microorganisms, causing pollution of soil, surface water and groundwater, thereby damaging the natural environment and affecting the lives of residents.

[0004] Currently, there is a lack of systematic and practical technologies for the treatment of tunnel boring machine (TBM) soil. Existing TBM soil treatment methods mainly focus on simple screening, dewatering, and off-site landfilling. Except for some TBM soil that is screened to extract stones and sand for recycling, most of it is directly disposed of and abandoned. Most of the engineering waste soil has not been treated harmlessly or utilized as a resource. This disposal method will cause significant ecological and environmental problems and will also lead to the waste of resources.

[0005] Therefore, this application designs a mobile shield tunneling soil and cutting material mixing device to solve the above-mentioned technical problems. Summary of the Invention

[0006] To address the aforementioned technical problems, this invention proposes a mobile mixing and stirring device for shield tunneling soil and cutting materials, which enables the harmless and resource-based utilization of shield tunneling soil during the tunneling process, thereby reducing land occupation and avoiding environmental pollution.

[0007] To achieve the above objectives, the present invention provides a mobile shield tunneling soil and cutting material mixing device, including a movable base, on which a mixing system and a drive system are provided, the drive system being located below the mixing system and being connected to the mixing system in a transmission manner;

[0008] The stirring system includes a stirring tank fixedly installed on the base, a stirring component is provided inside the stirring tank, and the stirring component is connected to the drive system for transmission.

[0009] The top of the mixing tank is provided with several feeding components, which are in communication with the inner cavity of the mixing tank;

[0010] The stirring assembly includes a stirring column that is driven and connected to the drive system. Several torque sensors are arranged at equal intervals on the stirring column. The torque sensors are driven and connected to the feeding assembly through the control system.

[0011] Preferably, the stirring column is provided with a total of spirally arranged stirring blades, and the torque sensor is located at the gap position of the stirring blades.

[0012] Preferably, the feeding assembly includes a feeding port disposed at the top of the mixing tank, the outlet of the feeding port being connected to an electric valve electrically connected to the control system, and the electric valve being connected to the inner cavity of the mixing tank through a feeding pipe.

[0013] Preferably, the top of the mixing tank is provided with a shield soil input system corresponding to the mixing column, and the shield soil input system extends into the mixing tank after passing through the filter screen at the top of the mixing tank; the bottom of the mixing tank is connected to a shield soil output system extending out of the mixing tank.

[0014] Preferably, the side wall of the mixing tank is connected to a ventilation pipe, the inlet of which is located above the filter screen; and an exhaust fan is provided at the outlet of the ventilation pipe.

[0015] Preferably, the drive system includes a drive motor mounted on the base, the output shaft of the drive motor is driven to a drive shaft, the drive shaft is driven to a drive gear, the drive gear is driven to a driven gear, and the driven gear is driven to the stirring column via a driven shaft.

[0016] Preferably, a connecting column is embedded and fixed at the bottom end of the stirring column, and the top end of the driven shaft extends into the stirring tank and is connected to the connecting column for transmission.

[0017] Preferably, the base is provided with a protective compartment, and the drive motor is installed inside the protective compartment; the drive motor is driven by a coupling, the coupling is driven by a guide shaft, the guide shaft extends out of the protective compartment and is driven by the drive shaft.

[0018] Preferably, a gearbox is fixedly mounted on the base, and the drive shaft and the driven shaft are rotatably connected inside the gearbox; a transmission gear set is provided inside the gearbox, and the transmission gear set is respectively connected to the drive gear and the driven gear.

[0019] Preferably, the bottom end of the base is provided with a plurality of self-locking rollers, and the top end of the base is provided with a bracket corresponding to the mixing tank, and the mixing tank is embedded and fixed in the bracket.

[0020] Compared with the prior art, the present invention has the following advantages and technical effects: The present invention discloses a mobile shield tunneling soil and cutting material mixing device. The movable base allows the mixing device to move with the shield tunneling process, improving the efficiency of shield tunneling soil treatment and disposal. Several sets of feeding components are set on the mixing tank, which can add different types of shield tunneling soil cutting materials according to different shield tunneling soil treatment and disposal requirements, meeting the needs of shield tunneling soil treatment and disposal under different strata and different tunneling modes. The mixing tank is equipped with a mixing component, which mixes the shield tunneling soil under the drive system, improving the mixing efficiency. During operation, several torque sensors are set on the mixing column of the mixing component to provide feedback on the mixing effect and control the feeding efficiency of the feeding component, thereby achieving dynamic control of the amount of shield tunneling soil cutting material added and saving cutting materials.

[0021] This invention has a compact structure and can achieve efficient, environmentally friendly, and harmless treatment and disposal of shield soil during shield tunneling. It reduces environmental pollution caused by shield soil, saves shield soil disposal costs, and the treated shield soil meets environmental protection standards and can be recycled. Attached Figure Description

[0022] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0023] Figure 1 This is a schematic diagram of the mobile shield tunnel soil and cutting material mixing device of the present invention;

[0024] Figure 2 This is a top view of the mobile shield tunneling soil and cutting material mixing device of the present invention;

[0025] Figure 3 This is a schematic diagram of the drive system structure of the present invention;

[0026] In the diagram: 1. Base; 2. Self-locking roller; 3. Bracket; 4. Drive system; 5. Mixing system; 6. Shield soil input system; 7. Shield soil output system; 8. Feed port; 9. Electric valve; 10. Feeding pipe; 11. Control system; 401. Mounting frame; 402. Fixing bolt; 403. Drive motor; 404. Protective chamber; 405. Coupling; 406. Guide shaft; 407. Gearbox; 408. Drive shaft; 409. Drive gear; 410. Transmission gear set; 411. Driven shaft; 412. Driven gear; 501. Mixing tank; 502. Mixing column; 503. Connecting column; 504. Double-ended bolt; 505. Mixing blades; 506. Torque sensor; 507. Filter screen; 508. Ventilation pipe; 509. Exhaust fan. Detailed Implementation

[0027] 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.

[0028] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Reference Figures 1-3 As shown, this embodiment provides a mobile shield tunnel soil and cutting material mixing device, including a movable base 1, on which a mixing system 5 and a drive system 4 are provided. The drive system 4 is located below the mixing system 5 and is connected to the mixing system 5 in a transmission manner.

[0030] The stirring system 5 includes a stirring tank 501 fixedly installed on the base 1, and a stirring component is provided inside the stirring tank 501. The stirring component is connected to the drive system 4 for transmission.

[0031] A feeding component is provided at the top of the mixing tank 501, and the feeding component is connected to the inner cavity of the mixing tank 501;

[0032] The mixing assembly includes a mixing column 502 that is connected to the drive system 4. Several torque sensors 506 are arranged at equal intervals on the mixing column 502. The torque sensors 506 are connected to the feeding assembly through the control system 11.

[0033] This invention discloses a mobile shield tunneling soil and cutting material mixing device. The movable base 1 allows the mixing device to move with the shield tunneling process, improving the efficiency of shield tunneling soil treatment. Several sets of feeding components are set on the mixing tank 501, which can add different types of shield tunneling soil cutting materials according to different shield tunneling soil treatment requirements, meeting the needs of shield tunneling soil treatment under different strata and different tunneling modes. The mixing tank 501 is equipped with a mixing component, which stirs the shield tunneling soil under the drive system 4, improving the mixing efficiency. It is used to mix the shield tunneling soil and cutting materials, and to expel the air inside the mixing tank 501, improving the quality of shield tunneling soil treatment. During operation, several torque sensors 506 are set on the mixing column 502 of the mixing component to provide feedback on the mixing effect and adjust the feeding efficiency of the feeding component, which can realize the dynamic control of the amount of shield tunneling soil cutting material added, saving cutting materials. This invention has a compact structure and can achieve efficient, environmentally friendly, and harmless treatment and disposal of shield soil during shield tunneling. It reduces environmental pollution caused by shield soil, saves shield soil disposal costs, and the treated shield soil meets environmental protection standards and can be recycled.

[0034] Furthermore, the control system 11 in this embodiment uses an integrated computer with a dedicated program pre-set inside to receive the detection signal from the torque sensor 506 and output control commands.

[0035] Further optimizing the design, the mixing column 502 is equipped with spirally arranged mixing blades 505, and a torque sensor 506 is positioned between the mixing blades 505. The spiral arrangement of the mixing blades 505 on the mixing column 502 allows for longitudinal mixing of the shield soil entering the mixing tank 501, ensuring proper mixing of the shield soil with the added subtractive material, improving uniformity, and enabling the subtractive material to modify the shield soil. The torque sensor 506, located on the mixing column 502, detects the state of the shield soil and feeds this information back to the feeding assembly via the control system 11, controlling the efficiency of the feeding assembly.

[0036] Further optimization of the scheme includes a feeding port 8 located at the top of the mixing tank 501. The outlet of the feeding port 8 is connected to an electric valve 9 electrically connected to the control system 11. The electric valve 9 is connected to the inner cavity of the mixing tank 501 through the feeding pipe 10. Different reducing materials are added through the feeding port 8 according to the soil quality of the shield tunneling area. The control system 11 is connected to the electric valve 9 to control the opening and closing of the electric valve 9, thereby achieving efficient addition of reducing materials. The reducing materials after passing through the electric valve 9 are added to the inner cavity of the mixing tank 501 through the feeding pipe 10.

[0037] Further optimizing the design, a shield soil input system 6, corresponding to the mixing column 502, is installed at the top of the mixing tank 501. The shield soil input system 6 extends into the mixing tank 501 after passing through the filter screen 507 at the top of the mixing tank 501. A shield soil output system 7, extending out of the mixing tank 501, is connected to the bottom of the mixing tank 501. A shield soil input valve is installed at the top of the mixing tank 501, and the shield soil input system 6 is connected to the mixing tank 501 through the shield soil input valve for transporting untreated shield soil into the mixing tank 501. A shield soil output valve is installed at the bottom of the mixing tank 501, and the shield soil output valve is connected to the shield soil output system 7 for transporting treated shield soil for recycling. The filter screen 507 is located in the upper area of ​​the mixing tank 501, dividing the mixing tank 501 into two parts.

[0038] To further optimize the design, a ventilation pipe 508 is connected to the side wall of the mixing tank 501, with the inlet of the ventilation pipe 508 located above the filter screen 507; an exhaust fan 509 is installed at the outlet of the ventilation pipe 508. The ventilation pipe 508 is connected to the side wall of the mixing tank 501 above the filter screen 507, and the exhaust fan 509 is used for ventilation to reduce the impact of dust splashed during the mixing process on the environment; at the same time, it facilitates the exhaust of air from the mixing tank 501, improving the treatment effect on the tunnel boring machine soil.

[0039] Further optimizing the scheme, the drive system 4 includes a drive motor 403 mounted on the base 1. The output shaft of the drive motor 403 is driven by a drive shaft 408, and a drive gear 409 is driven by the drive shaft 408. The drive gear 409 is driven by a driven gear 412, and the driven gear 412 is driven by a driven shaft 411. A connecting column 503 is embedded and fixed at the bottom of the mixing column 502. The top end of the driven shaft 411 extends into the mixing tank 501 and is driven by the connecting column 503. The drive motor 403 is electrically connected to the control system 11, enabling automatic control. The drive motor 403 drives the drive gear 409 to rotate via the drive shaft 408, and then drives the driven shaft 411 to rotate via the driven gear 409 and the driven gear 412. The driven shaft 411 extends into the mixing tank 501 and drives the mixing column 502 to rotate via the connecting column 503 embedded at the bottom of the mixing column 502, thus achieving the mixing of shield soil and reducing material.

[0040] Furthermore, a double-ended stud is provided at the bottom end of the stirring column 502. The double-ended stud passes through the connecting column 503 and the driven shaft 411 in sequence, so that the stirring column 502, the connecting column 503 and the driven shaft 411 form a whole and achieve stable transmission.

[0041] Furthermore, a mounting frame 401 is mounted on the base 1 by fixing bolts 402, and a drive motor 403 is mounted on the mounting frame 401.

[0042] In a further optimized design, a protective chamber 404 is provided on the base 1, and a drive motor 403 is installed inside the protective chamber 404. The drive motor 403 is driven by a coupling 405, and the coupling 405 is driven by a guide shaft 406. The guide shaft 406 extends out of the protective chamber 404 and is driven by a drive shaft 408. The protective chamber 404 covers the mounting frame 401, enclosing the drive motor 403 and the coupling 405 to improve protection. The guide shaft 406, driven by the coupling 405, extends out of the protective chamber 404 and then drives the drive shaft 408 to rotate.

[0043] Furthermore, a transmission hole is provided at the bottom end of the drive shaft 408, and the guide shaft 406 extends into the transmission hole for transmission.

[0044] Further optimizing the design, a gearbox 407 is fixedly mounted on the base 1, with the drive shaft 408 and driven shaft 411 rotatably connected within the gearbox 407. A transmission gear set 410 is installed within the gearbox 407, and the transmission gear set 410 is connected to the drive gear 409 and driven gear 412 respectively. The gearbox 407 is mounted on the base 1 by several fixing bolts 402. The transmission gear set 410 within the gearbox 407 consists of several meshing gears, enabling transmission between the drive gear 409 and driven gear 412. Simultaneously, the torque of the stirring column 502 can be increased through combinations of different gears.

[0045] Further optimizing the design, the bottom of the base 1 is equipped with several self-locking rollers 2, and the top of the base 1 is equipped with a bracket 3 corresponding to the mixing tank 501. The mixing tank 501 is embedded and fixed in the bracket 3. The self-locking rollers 2 are located at the bottom of the base 1, which allows the mixing device to move with the tunnel boring machine during the tunneling process, improving the efficiency of tunnel soil treatment and disposal. The bracket 3 is set on the base to fix the mixing tank 501 and improve stability.

[0046] Furthermore, in this embodiment, the bottom of the inner cavity of the mixing tank 501 is inclined from the periphery to the center, so that the mixed shield soil gathers in the center, which facilitates discharge and recycling from the shield soil output system 7 and avoids insufficient discharge.

[0047] Furthermore, this invention adopts mechatronics and computer control, with each system and component interconnected, facilitating operation and efficiently completing the mixing and stirring of shield tunnel soil and cutting materials, thus completing the treatment and disposal of shield tunnel soil.

[0048] Specific work process:

[0049] Before using this device, tighten the fixing bolts 402 and double-ended bolts 504 to secure the drive system 4, and connect and fix the stirring column 502 to the driven shaft 411 and the connecting column 503 to complete the device assembly. Check whether all electric valves 9 can be used normally and adjust the opening size, and check whether the drive system 4 and the stirring column 502 can be used normally and adjust the power.

[0050] Move the device to the work site, lock the self-locking roller 2, connect the external power supply, turn on the control system 11, set the required program, turn off the shield soil input system 6, the shield soil output system 7 and the exhaust fan 509, turn on the motor, and make the mixing column 502 start to rotate at low speed to enter the pre-working state.

[0051] At the start of operation, first turn on the exhaust fan 509 to expel air from the mixing tank 501. Then, open the shield soil input electric valve 9, and the slurry enters the mixing tank 501 through the shield soil input system 6. When the bottom of the filter screen 507 in the mixing tank 501 is nearly full of shield soil, close the shield soil input electric valve 9, increase the frequency of the drive motor 403, and the drive motor 403 drives the mixing column 502 to rotate at high speed. Open the electric valve 9 again to add the cutting material. Observe the torque inside the mixing tank 501 in the control system 11, and determine the mixing of the shield soil and the cutting material based on the torque. When the torque is too high, the valve opening is increased to increase the feeding rate of the cutting material; when the torque is low, the valve opening is decreased to reduce the feeding rate of the cutting material. When the treatment requirements are met, the motor frequency is reduced and the shield soil output electric valve 9 is opened. The treated shield soil is recycled through the shield soil output system 7 or used as other functional materials. The above operation is repeated according to the needs of shield tunneling. After the shield soil treatment is completed, the double-ended bolts 504 are removed, and the inner walls of the mixing tank 501, the feeding port 8, and the pipes are cleaned to complete the use.

[0052] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0053] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A mobile shield tunneling soil and cutting material mixing device, characterized in that: It includes a movable base (1), on which a stirring system (5) and a drive system (4) are provided. The drive system (4) is located below the stirring system (5) and is connected to the stirring system (5) in a transmission manner. The stirring system (5) includes a stirring tank (501) fixedly installed on the base (1), and a stirring component is provided inside the stirring tank (501). The stirring component is connected to the driving system (4) in a transmission manner. The top of the mixing tank (501) is provided with a plurality of feeding components, and the feeding components are in communication with the inner cavity of the mixing tank (501); The stirring assembly includes a stirring column (502) that is connected to the driving system (4) in a transmission. The stirring column (502) is provided with a plurality of torque sensors (506) arranged at equal intervals. The torque sensors (506) are connected to the feeding assembly in a transmission through the control system (11). The feeding assembly includes a feeding port (8) located at the top of the mixing tank (501). The outlet of the feeding port (8) is connected to an electric valve (9) electrically connected to the control system (11). The electric valve (9) is connected to the inner cavity of the mixing tank (501) through a feeding pipe (10). The top of the mixing tank (501) is provided with a shield soil input system (6) corresponding to the mixing column (502). The shield soil input system (6) extends into the mixing tank (501) after passing through the filter screen (507) at the top of the mixing tank (501). The bottom of the mixing tank (501) is connected to a shield soil output system (7) extending out of the mixing tank (501). The side wall of the mixing tank (501) is connected to a ventilation pipe (508), the inlet of which is located above the filter screen (507); and an exhaust fan (509) is provided at the outlet of the ventilation pipe (508).

2. The mobile shield tunneling soil and cutting material mixing device according to claim 1, characterized in that: The stirring column (502) is provided with a total of spiral-shaped stirring blades (505), and the torque sensor (506) is located at the gap position of the stirring blades (505).

3. The mobile shield tunneling soil and cutting material mixing device according to claim 1, characterized in that: The drive system (4) includes a drive motor (403) mounted on a base (1). The output shaft of the drive motor (403) is connected to a drive shaft (408). A drive gear (409) is connected to the drive shaft (408). A driven gear (412) is connected to the drive gear (409). The driven gear (412) is connected to the stirring column (502) via a driven shaft (411).

4. The mobile shield tunneling soil and cutting material mixing device according to claim 3, characterized in that: The bottom end of the stirring column (502) is embedded with a connecting column (503), and the top end of the driven shaft (411) extends into the stirring tank (501) and is connected to the connecting column (503) for transmission.

5. The mobile shield tunneling soil and cutting material mixing device according to claim 3, characterized in that: The base (1) is provided with a protective chamber (404), and the drive motor (403) is installed in the protective chamber (404); the drive motor (403) is driven by a coupling (405), the coupling (405) is driven by a guide shaft (406), the guide shaft (406) extends out of the protective chamber (404) and is driven by the drive shaft (408).

6. The mobile shield tunneling soil and cutting material mixing device according to claim 3, characterized in that: A gearbox (407) is fixedly installed on the base (1), and the drive shaft (408) and the driven shaft (411) are rotatably connected in the gearbox (407); a transmission gear set (410) is provided in the gearbox (407), and the transmission gear set (410) is connected to the drive gear (409) and the driven gear (412) respectively.

7. The mobile shield tunneling soil and cutting material mixing device according to claim 1, characterized in that: The bottom end of the base (1) is provided with several self-locking rollers (2), and the top end of the base (1) is provided with a bracket (3) corresponding to the mixing tank (501). The mixing tank (501) is embedded and fixed in the bracket (3).

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