A soil pressure slurry double-mode shield machine's muck front gate

Abstract

The application discloses a soil pressure and slurry double-mode shield machine's muck front gate and relates to the technical field of shield machines. The front gate comprises a left gate, a right gate, a left telescopic rod and a right telescopic rod. The left gate is hinged to a slurry pipe. The right gate is hinged to the slurry pipe. One end of the left telescopic rod is hinged to the middle part of a front shield partition plate. The other end of the left telescopic rod is hinged to the left gate. One end of the right telescopic rod is hinged to the middle part of the front shield partition plate. The other end of the right telescopic rod is hinged to the right gate. When the left gate and the right gate are matched, the left gate and the right gate cover the muck outlet on the front shield partition plate. The left gate and the right gate are hinged to the slurry pipe, so that the slurry pipe can be kept unobstructed when the left gate and the right gate need to be opened or closed. The left telescopic rod and the right telescopic rod are arranged, so that the left gate and the right gate can be quickly opened and closed.

Description

Technical Field

[0001] This invention relates to the field of tunnel boring machine technology, and more specifically to a slag front gate for a dual-mode earth pressure slurry tunnel boring machine. Background Technology

[0002] When the tunnel boring machine (TBM) is in operation, the muck front gate is opened, and the screw conveyor extends to transport mud, sand, and other materials from the soil chamber to the surface. Earth pressure balance TBMs achieve earth pressure balance by opening and closing the gate. When the TBM encounters ground conditions with high water content, a gushing phenomenon may occur. In this case, the muck front gate must be closed promptly to completely isolate the soil chamber from the structure behind the front shield partition, preventing mud, mortar, and water from entering the shield body and affecting the TBM's functionality.

[0003] Currently, the front gate of the slag heap is typically driven by hydraulic cylinders on both sides parallel to the gate's running trajectory, achieving parallel opening and closing. However, this structure obstructs the slurry discharge port during opening and closing. If the front gate of the screw conveyor cannot close, the slurry discharge port cannot be exposed, preventing slurry discharge in slurry-water mode and hindering the slurry-water mode conversion. Manual removal of foreign objects affecting the closure of the front gate is required through atmospheric or pressurized entry into the storage chamber. This method carries high risks, has a long implementation period, and significantly impacts project construction.

[0004] Therefore, how to provide a slag front gate for a dual-mode earth pressure slurry shield machine that does not affect slurry discharge during operation is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the present invention provides a slag front gate for a dual-mode earth pressure slurry shield machine, which aims to solve the problems in the background art mentioned above and realize normal slurry discharge when opening and closing the front gate.

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

[0007] A muck front gate for a dual-mode earth pressure slurry shield tunneling machine includes:

[0008] Left gate, which is hinged to the mud pipe;

[0009] The right gate is hinged to the mud pipe;

[0010] The left telescopic rod has one end hinged to the middle of the front shield diaphragm and the other end hinged to the left gate.

[0011] The right telescopic rod has one end hinged to the middle of the front shield diaphragm and the other end hinged to the right gate.

[0012] The left gate, when in conjunction with the right gate, covers the mud and sand outlet on the front shield diaphragm.

[0013] Furthermore, the junction between the left gate and the right gate is concave arc-shaped, while the junction between the right gate and the left gate is convex arc-shaped.

[0014] Furthermore, the left gate includes a gate seat, a first hinged rod, a second hinged rod, and a sliding plate. The gate seat is hinged to the mud pipe, and a gate groove is provided on the gate seat. The sliding plate is slidably connected in the gate groove. One end of the first hinged rod is hinged to the inner wall of the gate groove, and the other end of the first hinged rod is hinged to the second hinged rod and the telescopic rod. The end of the second hinged rod away from the first hinged rod is hinged to the sliding plate.

[0015] Furthermore, the left gate and the right gate are symmetrically arranged, and the left gate and the right gate have the same structure.

[0016] Furthermore, the left telescopic rod includes a connecting rod and a moving rod. The connecting rod is hinged to the middle of the front shield diaphragm. The end of the connecting rod away from the front shield diaphragm is slidably connected to the moving rod. The end of the moving rod away from the connecting rod is hinged to the left gate.

[0017] Furthermore, the right telescopic rod has the same structure as the left telescopic rod, and the right telescopic rod and the left telescopic rod are arranged symmetrically.

[0018] Furthermore, a limit block is provided on the front shield partition, the limit block being used to abut the left gate and the right gate when the left gate and the right gate are opened to their maximum extent.

[0019] As can be seen from the above technical solution, compared with the prior art, the present invention discloses a slag front gate for a dual-mode earth pressure slurry shield machine. By hinged to the left and right gates respectively with the slurry pipe, the slurry pipe can be kept unobstructed when the left and right gates need to be opened or closed. By setting the left and right telescopic rods, the left and right gates can be opened and closed quickly. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0021] Figure 1 This is a cross-sectional view of the front gate when it is closed, provided by the present invention.

[0022] Figure 2 This is a cross-sectional view of the front gate when it is partially closed, as provided by the present invention.

[0023] Figure 3 This is a cross-sectional view of the front gate when it is open, provided by the present invention.

[0024] Figure 4 External structural diagram of the front gate provided by the present invention;

[0025] Figure 5 Schematic diagrams of the arc-shaped left gate and arc-shaped right gate provided by the present invention.

[0026] Wherein: 1 is the left gate; 11 is the gate seat; 12 is the first hinged rod; 13 is the second hinged rod; 14 is the sliding plate; 2 is the right gate; 3 is the mud pipe; 4 is the left telescopic rod; 41 is the connecting rod; 42 is the moving rod; 5 is the right telescopic rod; 6 is the front shield diaphragm; 7 is the mud and sand outlet; 8 is the limiting block. 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] See Figure 1-5 The present invention discloses a slag front gate for a dual-mode earth pressure slurry shield machine, comprising: a left gate 1, a right gate 2, a left telescopic rod 4, and a right telescopic rod 5.

[0029] The left gate 1 is hinged to the mud pipe 3; the right gate 2 is hinged to the mud pipe 3; one end of the left telescopic rod 4 is hinged to the middle of the front shield diaphragm 6, and the other end of the left telescopic rod 4 is hinged to the left gate 1; one end of the right telescopic rod 5 is hinged to the middle of the front shield diaphragm 6, and the other end of the right telescopic rod 5 is hinged to the right front gate; wherein, when the left gate 1 and the right gate 2 cooperate, they cover the mud outlet 7; in this embodiment, when the left telescopic rod 4 pulls the left gate 1 and the right telescopic rod 5 pulls the right gate 2, the left gate 1 and the right gate 2 are in the open state, and mud flows out of the mud outlet 7; when the left telescopic rod 4 pushes the left gate 1 and the right telescopic rod 5 pushes the right gate 2, the left gate 1 and the right gate 2 are in the closed state, and the mud outlet 7 is in the closed state. By hinged to the left gate 1 and the right gate 2 respectively, the mud pipe 3 can be kept unobstructed when the left gate 1 and the right gate 2 need to be opened or closed.

[0030] The left gate 1 includes a gate seat 11, a first hinge rod 12, a second hinge rod 13, and a sliding plate 14. The gate seat 11 is hinged to the mud pipe 3, and a gate groove is provided on the gate seat 11. The sliding plate 14 is slidably connected in the gate groove. One end of the first hinge rod 12 is hinged to the inner wall of the gate groove, and the other end of the first hinge rod 12 is hinged to the second hinge rod 13 and the telescopic rod. The end of the second hinge rod 13 away from the first hinge rod 12 is hinged to the sliding plate 14. In this embodiment, when the left telescopic rod 4 retracts... When the first hinge rod 12 and the second hinge rod 13 are pulled, the first hinge rod 12 and the second hinge rod 13 change from being in the same straight line to being in the middle angle state. At this time, the slide plate 14 moves closer to the inside of the slide groove. When the slide plate 14 slides to a certain angle, the left telescopic rod 4 can pull the left gate 1 to rotate as a whole. The left gate 1 and the right gate 2 are symmetrically arranged. The left gate 1 and the right gate 2 have the same structure. When the left gate 1 and the right gate 2 move at the same time, the mud and sand outlet 7 can pass through the mud and sand.

[0031] The left telescopic rod 4 includes a connecting rod 41 and a moving rod 42. The connecting rod 41 is hinged to the middle of the front shield diaphragm 6. The end of the connecting rod 41 away from the front shield diaphragm 6 is slidably connected to the moving rod 42. The end of the moving rod 42 away from the connecting rod 41 is hinged to the left gate 1. The right telescopic rod 5 has the same structure as the left telescopic rod 4 and is symmetrically arranged with the left telescopic rod 4. In this embodiment, both the left telescopic rod 4 and the right telescopic rod 5 are hydraulic cylinders. The connecting rod 41 is the cylinder barrel of the hydraulic cylinder, and the moving rod 42 is the piston rod of the hydraulic cylinder. The cylinder barrel is hinged to the front shield diaphragm 6, and the piston rod is hinged to the left gate 1 or the right gate 2.

[0032] Limiting blocks 8 are provided on the front shield diaphragm 6. The limiting blocks 8 are used to stop the left gate 1 and the right gate 2 when they are opened to the maximum.

[0033] In some other embodiments, the mating point between the left gate 1 and the right gate 2 is concave arc-shaped, and the mating point between the right gate 2 and the left gate 1 is convex arc-shaped. During operation, when the front gate needs to be opened, the right telescopic rod 5 first drives the right gate 2 to rotate. After the right gate 2 rotates to a certain position, the left telescopic rod 4 drives the left gate 1 to rotate. When the front gate needs to be closed, the left telescopic rod 4 pushes the left gate 1 to a certain position, and the right telescopic rod 5 then pushes the right gate 2 to a certain position.

[0034] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0035] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A muck pre-gate for an earth pressure slurry dual mode shield machine, characterized by, include: Left gate, which is hinged to the mud pipe; The right gate is hinged to the mud pipe; The left telescopic rod has one end hinged to the middle of the front shield diaphragm and the other end hinged to the left gate. The right telescopic rod has one end hinged to the middle of the front shield diaphragm and the other end hinged to the right gate. The left gate, when in conjunction with the right gate, covers the mud and sand outlet on the front shield diaphragm. The left gate includes a gate seat, a first hinge rod, a second hinge rod, and a sliding plate. The gate seat is hinged to the mud pipe and has a gate groove. The sliding plate is slidably connected in the gate groove. One end of the first hinge rod is hinged to the inner wall of the gate groove, and the other end of the first hinge rod is hinged to the second hinge rod and the telescopic rod. The end of the second hinge rod away from the first hinge rod is hinged to the sliding plate.

2. The soil pre-door of the earth pressure slurry double-mode shield machine according to claim 1, characterized in that, The junction between the left gate and the right gate is concave arc-shaped, while the junction between the right gate and the left gate is convex arc-shaped.

3. The soil pressure slurry double-mode shield machine's muck front gate according to claim 1, characterized in that, The left gate and the right gate are symmetrically arranged, and the left gate and the right gate have the same structure.

4. The soil pre-door of the earth pressure slurry double-mode shield machine according to claim 1, characterized in that, The left telescopic rod includes a connecting rod and a moving rod. The connecting rod is hinged to the middle of the front shield diaphragm. The end of the connecting rod away from the front shield diaphragm is slidably connected to the moving rod. The end of the moving rod away from the connecting rod is hinged to the left gate.

5. The muck pre-door of the earth pressure slurry double-mode shield machine according to claim 4, characterized in that, The right telescopic rod has the same structure as the left telescopic rod, and the right telescopic rod and the left telescopic rod are arranged symmetrically.

6. The muck pre-door of the earth pressure slurry double-mode shield machine according to claim 1, characterized in that, A limit block is provided on the front shield plate, and the limit block is used to abut the left gate and the right gate when the left gate and the right gate are opened to the maximum.

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