Earth pressure muddy water dual-mode shield tunneling machine

Abstract

The utility model relates to the technical field of shield tunneling machines, in particular to an earth pressure muddy water double-mode shield tunneling machine, which comprises a front gate system, a screw conveyor, a belt conveyor and a central swivel joint, an earth pressure mode system is arranged on the basis of a single-mode muddy water shield tunneling machine in a matching way, and the earth pressure mode system comprises the front gate system, the screw conveyor and the belt conveyor. The spiral conveyor is communicated with the interior of the bin body through the connecting base, and in the earth pressure mode, slag is discharged through the spiral conveyor and conveyed into a tunnel through the belt conveyor, so that the adaptability of the shield tunneling machine is improved; the front gate system is installed on the front partition plate and used for opening and closing a mud opening so as to assist switching between modes and prevent mutual interference of different media. The center rotary connector can output additives to the cutter head, the probability that soil is attached to the cutter head is reduced, the cutting efficiency of the cutter head is improved, and the problem that the adaptability of the muddy water single-mode shield tunneling machine is poor is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of shield machines, in particular to an earth pressure and slurry double-mode shield machine. Background Art

[0002] Shield machines are used for tunneling. When tunneling a tunnel with a large water content in the stratum, a slurry shield machine is required for tunneling. However, during the tunneling process, the cutter head and cutters are prone to caking with mud cakes, which affects the construction efficiency.

[0003] To solve the above problems, for example, a patent document with the patent application number 202311682934.3 discloses a slurry shield machine. Gas is injected into the excavation chamber filled with slurry through a first pressure maintaining component, and the slurry discharge pipe extracts the slurry from the chamber body to lower the liquid level of the slurry in the excavation chamber. At this time, a part of the space at the top of the excavation chamber is filled with gas and there is no slurry in this part of the space. When the cutter head excavates the soil layer, the soil layer at this position is not easily softened and adhered to the cutter head to form a mud cake, thereby reducing the probability of the cutter head caking with mud cakes. However, a single-mode slurry shield machine cannot excavate different types of strata and has poor adaptability. How to transform a slurry shield machine into an earth pressure and slurry double-mode shield machine has become a problem to be solved in this field. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an earth pressure and slurry double-mode shield machine, so as to solve the problem that a single-mode slurry shield machine cannot excavate different types of strata and has poor adaptability.

[0005] To achieve the above purpose, the utility model provides an earth pressure and slurry double-mode shield machine, including a front shield. A chamber body is arranged inside the front shield, and a front partition is arranged inside the chamber body. The front partition is provided with a slurry port.

[0006] It further includes a screw conveyor, a connecting seat and a belt conveyor. The connecting seat is arranged at the slurry port of the front partition. The screw conveyor is provided with a first feeding port, and the first feeding port of the screw conveyor is installed on the connecting seat. The first feeding port is communicated with the slurry chamber of the chamber body. The other end of the screw conveyor is provided with a discharge port. The belt conveyor is arranged below the discharge port and is used for transporting the soil falling out of the discharge port.

[0007] Preferably, in the above technical solution, it further includes a front gate system, and the front gate system includes two gates, two supports, a first oil cylinder and a second oil cylinder. The two supports are respectively installed on the front partition in a rotatable manner. One end of each of the two supports is hinged to one end of the gate. One ends of the two gates are respectively arranged on the front partition on one side of the mud outlet. The other ends of the two supports are respectively hinged to the first oil cylinder and the second oil cylinder. By driving the two supports to rotate respectively through the first oil cylinder and the second oil cylinder, the other ends of the two gates are driven to approach or move away from each other to open or close the mud outlet.

[0008] Preferably, in the above technical solution, it further includes two slurry discharge pipes. The front partition is further provided with two slurry discharge ports. The mud outlet is arranged between the two slurry discharge ports. The two slurry discharge pipes are respectively installed in the two slurry discharge ports.

[0009] Preferably, in the above technical solution, it further includes a central swivel joint and a ground supply pipeline. One end of the central swivel joint is connected to the cutter head, and the other end of the central swivel joint is connected to the ground supply pipeline through a pipeline passing through the bin body.

[0010] Preferably, in the above technical solution, the belt conveyor includes a support frame, a belt, baffles and fixing plates. The belt is arranged on the support frame. The baffles are respectively installed on both sides of the support frame. The fixing plate is arranged at one end of the support frame. The two baffles on both sides are respectively fixedly connected to both ends of the fixing plate. The fixing plate and the two baffles on both sides can enclose a second feeding port, and the second feeding port corresponds to the discharge port.

[0011] Preferably, in the above technical solution, it further includes an anti-accumulation device. The anti-accumulation device includes a support seat, a soil pushing plate and a third oil cylinder. The support seat is installed on the support frame on one side of the second feeding port. The soil pushing plate is arranged on the belt on one side of the second feeding port. The fixing plate is provided with an installation hole. One end of the third oil cylinder is fixed on the support seat, and the other end passes through the installation hole and is fixedly connected to the soil pushing plate. The soil pushing plate is driven by the third oil cylinder to reciprocate along the transmission direction of the belt conveyor.

[0012] Preferably, in the above technical solution, a first detection module is arranged on one of the baffles. The first detection module is arranged on the first height side of the second feeding port. The first detection module is located between the fixing plate and the discharge port. A second detection module is arranged on the soil pushing plate. The second detection module is arranged above the first detection module.

[0013] Preferably, in the above technical solution, a controller is further included. The controller includes a first controller and a second controller, and the first controller and the second controller are communicatively connected. The first controller is electrically connected to the first detection module, the second detection module, and the actuator of the third oil cylinder respectively, and the second controller is electrically connected to the actuator of the screw conveyor.

[0014] Preferably, in the above technical solution, the first detection module includes a first infrared sensor and a second infrared sensor, and the height of the second infrared sensor is greater than that of the first infrared sensor; the second detection module is a first load sensor.

[0015] Preferably, in the above technical solution, a cleaning device is further included. The cleaning device includes a water spray pipe and a water pump. A plurality of water spray holes are formed in the other baffle, and each water spray hole is provided with a connecting pipe. Each connecting pipe is connected to the water spray pipe, and one end of the water spray pipe is connected to the water pump.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. The earth pressure and slurry double-mode shield machine in the utility model is provided with an earth pressure mode system on the basis of a single-mode slurry shield machine. The earth pressure mode system includes a front gate system, a screw conveyor, and a belt conveyor. The screw conveyor is communicated with the inside of the bin through a connecting seat. Under the earth pressure mode, slag is discharged by the screw conveyor and the muck is transported into the tunnel by the belt conveyor, so that the adaptability of the shield machine is improved and the efficiency of excavating composite strata is high; the front gate system is installed on the front partition board, which is used to open and close the slurry port to assist the conversion between the earth pressure mode and the slurry mode, and prevent different media from interfering with each other; the central swivel joint can output additives to the cutter head, reduce the probability of soil adhering to the cutter head, improve the cutting efficiency of the cutter head, and solve the problem of poor adaptability of the single-mode slurry shield machine.

[0018] 2. When the first detection module in the utility model detects the accumulated soil on the belt conveyor, the third oil cylinder drives the push plate to reciprocate along the transmission direction of the belt conveyor to boost the soil, so as to increase the height of the soil, replacing the action of manually cleaning the soil pile, greatly reducing the working intensity of front-line personnel, and solving the problem of time-consuming and laborious manual cleaning of the soil remaining on the belt conveyor.

[0019] 3. A pressure value is set for the first load sensor in the utility model. During the boosting process of the push plate, when the first load sensor reaches the set pressure value, the third oil cylinder drives the push plate to move towards the fixed plate; when the pressure applied by the soil to the first load sensor is less than the pressure value, the third oil cylinder drives the push plate to move towards the discharge port, thus completing a boosting action. Description of the Drawings

[0020] Figure 1 It is a schematic diagram of the overall structure of the earth pressure and slurry double-mode shield machine in the embodiment.

[0021] Figure 2 It is a schematic diagram of the front gate system of the earth pressure and slurry double-mode shield machine in the embodiment.

[0022] Figure 3 It is a front view schematic diagram of the soil accumulation prevention device of the earth pressure and slurry double-mode shield machine in the embodiment.

[0023] Figure 4 It is a schematic diagram of the second detection device of the earth pressure and slurry double-mode shield machine in the embodiment.

[0024] Figure 5 It is a schematic diagram of the water spray holes of the earth pressure and slurry double-mode shield machine in the embodiment.

[0025] Among them, 1 - air cushion chamber, 2 - slurry chamber, 3 - central swivel joint, 4 - front partition, 5 - screw conveyor, 6 - gate, 7 - first oil cylinder, 8 - slurry port, 9 - second oil cylinder, 10 - slurry discharge pipe, 11 - support, 12 - support seat, 13 - third oil cylinder, 14 - fixing plate, 15 - earth pushing plate, 16 - support frame, 17 - discharge port, 18 - baffle, 19 - belt conveyor, 20 - second load sensor, 21 - first load sensor, 22 - second infrared sensor, 23 - first infrared sensor, 24 - water spray hole. Specific implementation manners

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0027] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is 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 a limitation to the present invention.

[0028] In the description of the present invention, the meaning of "several" is one or more, the meaning of "multiple" is more than two, and understandings such as "greater than", "less than", "exceeding", etc. do not include the recited number, while understandings such as "above", "below", "within", etc. include the recited number. If there are descriptions of the terms "first", "second", "third", etc., they are only for descriptive purposes and for distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0029] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected to", "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the circumstances. The following describes the embodiments according to the overall structure of the present utility model.

[0030] As Figures 1 - 5 shown, the earth pressure and slurry double-mode shield machine of this embodiment includes: an air cushion chamber 1, a slurry chamber 2, a central swivel joint 3, a front bulkhead 4, a screw conveyor 5, a gate 6, a first driving member 7, a slurry port 8, a second driving member 9, a slurry discharge pipe 10, a support 11, a support seat 12, a third oil cylinder 13, a fixing plate 14, a pushing plate 15, a support frame 16, a discharge port 17, a baffle 18, a belt conveyor 19, a second load sensor 20, a first load sensor 21, a second infrared sensor 22, a first infrared sensor 23, and a water spray hole 24.

[0031] Continue to refer to Figures 1 - 5, a cabin is provided inside the front shield, and a front partition board 4 is provided inside the cabin. The front partition board 4 divides the cabin into a slurry chamber 2 and an air-cushion chamber 1. The slurry chamber 2 is located in front of the air-cushion chamber 1. The front partition board 4 is provided with a slurry port 8 and two slurry discharge ports. The slurry port 8 is arranged between the two slurry discharge ports. Two slurry discharge pipes 10 are respectively installed in the two slurry discharge ports. A connecting seat is installed at the slurry port 8 of the front partition board 4. The screw conveyor 5 is provided with a first feed port, and the first feed port of the screw conveyor 5 is installed on the connecting seat. The first feed port is communicated with the slurry chamber 2. The other end of the screw conveyor 5 is provided with a discharge port 17. The screw conveyor 5 can be obliquely inserted into the slurry chamber 2 and carry the slurry in the slurry chamber 2 to the discharge port. The belt conveyor is arranged below the discharge port, and the slurry falling from the discharge port is transported to the tunnel by the belt on the belt conveyor. The screw conveyor 5 and the belt conveyor in the earth pressure shield machine are added on the basis of the slurry single-mode shield machine, so that the shield machine can work under different soil layers. In the slurry mode, soil is discharged by the slurry discharge pipe 10, and in the earth pressure mode, soil is discharged by the screw conveyor 5, solving the problem of poor adaptability of the single-mode slurry shield machine.

[0032] When switching modes, in order to prevent the mutual interference of different media, a front gate system is installed on the front partition board 4. The front gate system includes two gates 6, two supports 11, a first driving member 7 and a second driving member 9. One ends of the two supports 11 are respectively rotatably installed on the front partition board 4 and are located in the air-cushion chamber 1. The first driving member 7 and the second driving member 9 are respectively hinged to the other ends of the two supports 11. One ends of the two gates 6 are respectively hinged to the front partition board 4 on one side of the slurry inlet and are located in the slurry chamber 2. One ends of the two supports 11 are respectively connected to the two gates 6 through connecting rods. In addition, the first driving member 7 and the second driving member 9 are preferably cylinders. The first driving member 7 and the second driving member 9 respectively drive the other ends of the two supports 11 to rotate to drive the two gates 6 to approach or move away from each other. The opening and closing of the front gate are controlled by the driving member to assist the switching between modes. In the slurry mode, the other ends of the two gates 6 approach each other. At this time, the slurry discharge port is exposed and slag is discharged through the slurry discharge pipe 10. In the earth pressure mode, the other ends of the two gates 6 move away from each other, exposing the slurry port 8, and slag is discharged by the screw conveyor 5.

[0033] In addition, one end of the central swivel joint 3 is connected to the cutter head, and the other end of the central swivel joint 3 passes through the cabin through a pipeline and is connected to the ground supply pipeline. The central swivel joint 3 is preferably capable of outputting additives to the cutter head, reducing the probability of soil adhering to the cutter head and improving the adaptability and cutting efficiency of the cutter head.

[0034] In Figures 3 - 5In [the above], when the shield machine excavates cohesive soil layers, the soil discharged by the screw conveyor is likely to slip on the belt conveyor 19, resulting in the formation of large soil piles. The weight of the large soil piles may collapse the entire support frame 16. Therefore, in order to prevent the occurrence of the above phenomenon, an anti-soil accumulation device is installed on the belt conveyor 19 in this embodiment.

[0035] The anti-soil accumulation device includes a support base 12, a soil pushing plate 15 and a third oil cylinder 13. The support base 12 is installed on the support frame 16 on one side of the second feed inlet. The soil pushing plate 15 is arranged on the belt on one side of the second feed inlet. The fixing plate 14 is provided with an installation hole. One end of the third oil cylinder 13 is fixed on the support base 12 and installed on the fixing plate 14 through the installation hole. The other end of the third oil cylinder 13 passes through the installation hole and is fixedly connected to the soil pushing plate 15. Driven by the third oil cylinder 13, the soil pushing plate 15 can reciprocate along the transmission direction of the belt conveyor 19.

[0036] In order to achieve automatic soil pushing, a first detection module for measuring the height of the accumulated soil is provided on one of the side baffles 18. The first detection module is arranged on the first height side of the second feed inlet. The first detection module is located between the fixing plate 14 and the discharge port 17. The first detection module includes a first infrared sensor 23 and a second infrared sensor 22. The accumulated soil height on the belt is detected by the two infrared sensors directly shooting from one side of the baffle 18 to the other side of the baffle 18; a second detection module for measuring the height of the accumulated soil is provided on the soil pushing plate 15. The second detection module is arranged above the first detection module. The second detection module is a first load sensor 21; and the controller includes a first controller and a second controller. Among them, the first controller and the second controller are communicatively connected. The first controller is electrically connected to the first detection module, the second detection module and the driver of the third oil cylinder 13 respectively. The second controller is electrically connected to the driver of the screw conveyor 5. Among them, using the first detection module to detect the accumulated soil height and the second controller to control the soil output speed of the screw conveyor 5 are prior arts.

[0037] Before using the soil accumulation prevention device in the use example, first set a pressure value for the first load sensor 21. When the first infrared sensor 23 detects soil accumulation, the second controller controls the screw conveyor 5 to reduce its speed to slow down the soil excavation speed. If the second infrared sensor 22 detects soil accumulation, the second controller controls the screw conveyor 5 to stop excavating soil. After controlling the speed of the screw conveyor 5, the first controller controls the third oil cylinder 13 to drive the bulldozing plate 15 to move towards the discharge port 17 to boost the soil. When the first load sensor 21 on the bulldozing plate 15 reaches the set pressure value, the other end of the third oil cylinder 13 retracts to drive the bulldozing plate 15 to move towards the fixed plate 14. When the pressure of the soil on the bulldozing plate 15 is below the pressure value, the third oil cylinder 13 drives the bulldozing plate 15 to push the soil again, and so on in a cycle until the first infrared sensor 23 cannot detect soil accumulation during the boosting process. The bulldozing plate 15 stops boosting and resets near the fixed plate 14, and then the second controller controls the screw conveyor 5 to restart excavating soil. The farthest boosting distance of the bulldozing plate 15 can exceed the discharge port 17 to maximize the height of the soil, so that the belt can smoothly carry the soil out.

[0038] In addition, a cleaning device is also provided on the belt conveyor 19. The cleaning device includes a water suction pump and a plurality of spray pipes. A plurality of water spray holes 24 are opened on the other side baffle 18. Each water spray hole 24 is connected with a connecting pipe, and each connecting pipe is connected to the spray pipe. One end of the spray pipe is connected to the water suction pump. After the use of the belt conveyor 19 is completed, the water suction pump is started to extract external water source. The water flow successively passes through the spray pipe and the connecting pipe, and finally sprays out through the water spray holes 24 to clean the residual muck on the belt conveyor 19.

[0039] In summary, in this use example, a system with earth pressure mode is provided on the basis of a single-mode slurry shield machine, including a front gate system, a screw conveyor 5 and a belt conveyor. The screw conveyor 5 is communicated with the inside of the cabin through a connecting seat. In the earth pressure mode, the screw conveyor 5 discharges the muck and the belt conveyor transports the muck to the tunnel, improving the adaptability of the shield machine; the front gate system is installed on the front partition 4 to open and close the slurry port 8 to assist in the switching between modes and prevent the interference between different media; the central swivel joint 3 can output additives to the cutter head, reducing the probability of soil adhering to the cutter head, improving the cutting efficiency of the cutter head, and solving the problem of poor adaptability of the single-mode slurry shield machine.

[0040] The foregoing description of the specific exemplary embodiments of the present utility model is for purposes of illustration and exemplification. These descriptions are not intended to limit the present utility model to the precise forms disclosed, and it is apparent that many changes and variations are possible in light of the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present utility model and its practical applications, so that those skilled in the art of the present utility model can implement and utilize various different exemplary embodiments of the present utility model, as well as various different selections and changes. The scope of the present utility model is intended to be defined by the claims and their equivalents.

Claims

1. An earth pressure mud water dual-mode shield machine, comprising a front shield, a chamber body is arranged in the front shield, a front baffle is arranged in the chamber body, and a mud port is opened in the front baffle, characterized in that: It also includes a screw conveyor, a connecting seat and a belt conveyor. The connecting seat is arranged at the mud port of the front partition. The screw conveyor is provided with a first feed port, and the first feed port of the screw conveyor is installed on the connecting seat. The first feed port is connected to the mud and water bin of the bin body. The other end of the screw conveyor is provided with a discharge port, and the belt conveyor is arranged below the discharge port for transporting the soil falling out of the discharge port.

2. The earth pressure mud water dual-mode shield machine according to claim 1, characterized in that: It also includes a front gate system, which includes two gates, two supports, a first oil cylinder and a second oil cylinder. The two supports are respectively mounted on the front bulkhead in a rotatable manner, one end of the two supports is hinged to one end of the gate, one end of the two gates is respectively arranged on the front bulkhead on one side of the mud port, the other ends of the two supports are respectively hinged to the first oil cylinder and the second oil cylinder, and the two supports are respectively driven to rotate by the first oil cylinder and the second oil cylinder to drive the other ends of the two gates to move closer to or away from each other to open or close the mud port.

3. The earth pressure mud water dual-mode shield machine according to claim 1, characterized in that: It also includes two slurry discharge pipes. The front partition plate also has two slurry discharge ports. The slurry port is arranged between the two slurry discharge ports. The two slurry discharge pipes are respectively installed in the two slurry discharge ports.

4. The earth pressure mud water dual-mode shield machine according to claim 1, characterized in that: It also includes a central swivel joint and a ground supply pipeline. One end of the central swivel joint is connected to the cutter disc, and the other end of the central swivel joint is connected to the ground supply pipeline through a pipeline passing through the warehouse body.

5. The earth pressure mud water dual-mode shield machine according to claim 1, characterized in that: The belt conveyor includes a support frame, a belt, a baffle and a fixed plate, the belt is arranged on the support frame, the baffles are respectively installed on both sides of the support frame, the fixed plate is arranged at one end of the support frame, the baffles on both sides are respectively fixedly connected to the two ends of the fixed plate, and the fixed plate and the baffles on both sides can form a second feed port, and the second feed port corresponds to the discharge port.

6. The earth pressure mud water dual-mode shield machine according to claim 5, characterized in that: It also includes an anti-soil accumulation device, which includes a support seat, a bulldozer plate and a third oil cylinder. The support seat is installed on the support frame on the side of the second feed port, and the bulldozer plate is arranged on the belt on the side of the second feed port. The fixed plate has a mounting hole. One end of the third oil cylinder is fixed on the support seat, and the other end passes through the mounting hole and is fixedly connected to the bulldozer plate. The bulldozer plate is driven by the third oil cylinder to reciprocate along the transmission direction of the belt conveyor.

7. The earth pressure mud water dual-mode shield machine according to claim 6, characterized in that: The baffle on one side is provided with a first detection module, the first detection module is arranged at a first height side of the second feed port, the first detection module is located between the fixed plate and the discharge port, and the bulldozer plate is provided with a second detection module, and the second detection module is arranged above the first detection module.

8. The earth pressure mud water dual-mode shield machine according to claim 7, characterized in that: It also includes a controller, which includes a first controller and a second controller. The first controller and the second controller are communicatively connected. The first controller is electrically connected to the first detection module, the second detection module and the driver of the third oil cylinder respectively, and the second controller is electrically connected to the driver of the screw conveyor.

9. The earth pressure mud water dual-mode shield machine according to claim 8, characterized in that: The first detection module includes a first infrared sensor and a second infrared sensor, wherein the height of the second infrared sensor is greater than that of the first infrared sensor; and the second detection module is a first load sensor.

10. The earth pressure mud water dual-mode shield machine according to claim 9, characterized in that: It also includes a cleaning device, which includes a water spray pipe and a water pump. The baffle on the other side is provided with a plurality of water spray holes, each of which is provided with a connecting pipe, each of which is connected to the water spray pipe, and one end of the water spray pipe is connected to the water pump.

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