Quick connection device and method for slurry pipeline of slurry balance shield machine

Abstract

The application relates to a quick pipe connecting device and method for a slurry balance shield machine, wherein the fixed pipe is composed of a pressing assembly and a fixed pipe sealing assembly; the pressing assembly comprises a base steel plate, a rib plate and a jack; the base steel plate is connected to the outer wall surface of the fixed pipe along the radial direction of the fixed pipe; the rib plate is connected to the fixed pipe and the base steel plate respectively; the jack is connected to the base steel plate through the base; the extension direction of the jack is parallel to the axial direction of the fixed pipe; the fixed pipe sealing assembly comprises an annular steel plate and an annular sealing ring; the annular steel plate is connected to the outer wall surface of the fixed pipe along the radial direction of the fixed pipe; the annular sealing ring is connected to one side of the annular steel plate; the rotating pipe comprises a counterforce assembly, a rotating pipe sealing assembly, a first interface and a second interface; the counterforce assembly comprises a counterforce steel plate and a rib plate; the counterforce steel plate is arranged correspondingly to the base steel plate and is connected to the outer wall surface of the rotating pipe along the radial direction of the rotating pipe; the rib plate is connected to the rotating pipe and the counterforce steel plate respectively.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of slurry shield technology, in particular to a quick connecting device for slurry pipeline of slurry balance shield machine and a connecting method thereof. BACKGROUND

[0002] In the current underground tunnel construction, the slurry balance shield machine is more and more widely used due to its high construction accuracy, small disturbance and fast speed. In the construction process of the slurry balance shield machine, the supporting slurry pipeline behind the trolley needs to be lengthened. The existing technology mainly uses a temporary extension pipeline in the pushing process, and then disconnects the connection between the pipelines when the shield machine stops and assembles the pipe segments, and retracts the hose and connects the new rigid pipeline. In view of this, the time-consuming of connecting the slurry pipeline of the shield machine is one of the key factors affecting the pushing efficiency, which further affects the construction period of the tunnel project. Therefore, the quick connection of the slurry pipeline of the slurry balance shield machine during construction is a technical problem to be solved by those skilled in the art.

[0003] The skilled person in the art proposes a technical solution of extending the pipeline by using a rotary tee, a piston pipe and an extension pipe, such as the patent (CN214303845U) "Pipeline extension device in tunneling mode and shield machine" of Xu Gong Group Kaigong Heavy Industry Nanjing Co., Ltd. Su Yanchi et al. This technical solution uses a large number of special extension pipes and gate valves, which not only increases the production and manufacturing difficulty of the slurry pipeline, increases the equipment and material investment cost, but also expands the occupied space of the slurry pipeline layout, affecting the construction of the internal structure of the tunnel. The skilled person in the art also proposes a technical solution of extending the pipeline by using a relay sealing cabin, such as the patent (CN113202498A) "Pipeline extension equipment and slurry circulation system for slurry shield" of China Railway Construction Heavy Industry Co., Ltd. Cheng Yongliang et al. This technical solution has a complex structure, high cost and poor applicability, and is difficult to use in large / super large diameter slurry shield. The skilled person in the art also proposes a pipeline extension technical solution using a front trailer, a rear trailer, a front pipe replacement mechanism, a rear pipe replacement mechanism, a tee valve group and an extension pipe section, and a pipeline extension technical solution using a plurality of storage pipe groups, such as the patent (CN114607393A) "Parallel pipeline extension device" of China Railway Construction Heavy Industry Co., Ltd. Liu Feixiang et al. and the patent (CN111828023B) "Continuous pipe connecting system for slurry shield and construction method thereof" of Shanghai Tunnel Engineering Co., Ltd. Liu Zhihui et al. The above technical solutions modify the slurry circulation system of the shield in multiple places, add complex components, and have a complicated pipe connecting process, which is difficult to popularize and apply in engineering practice. SUMMARY

[0004] The purpose of the present application is to overcome the defects of the prior art, and provide a quick connecting device for slurry pipeline of slurry balance shield tunneling machine and a connecting method thereof, so as to realize the pre-connection of slurry pipeline during the advancing of the slurry balance shield tunneling machine and the quick connection of the slurry pipeline after the advancing of the shield is completed. Meanwhile, the quick connecting device has simple structure, low processing difficulty, low manufacturing cost, simple connecting operation steps, and is convenient for the construction personnel to master and use.

[0005] The purpose of the present application can be achieved by the following technical solutions:

[0006] A quick connecting device for slurry pipeline of slurry balance shield tunneling machine, comprising a fixed pipe, a rotating pipe and a bracket, the fixed pipe is connected to the bracket through the rotating pipe, the fixed pipe is composed of a clamping assembly and a fixed pipe sealing assembly, the clamping assembly comprises a base steel plate, a rib plate and a jack, the base steel plate is connected to the outer wall of the fixed pipe along the radial direction of the fixed pipe, the rib plate is connected to the fixed pipe and the base steel plate respectively, the jack is connected to the base steel plate through the base, and the extension direction of the jack is parallel to the axial direction of the fixed pipe; the fixed pipe sealing assembly comprises an annular steel plate and an annular sealing ring, the annular steel plate is connected to the outer wall of the fixed pipe along the radial direction of the fixed pipe, the annular sealing ring is connected to one side of the annular steel plate, the rotating pipe comprises a counterforce assembly, a rotating pipe sealing assembly, a first interface and a second interface; the counterforce assembly comprises a counterforce steel plate and a rib plate, the counterforce steel plate is arranged corresponding to the base steel plate and connected to the outer wall of the rotating pipe along the radial direction of the rotating pipe, and the rib plate is connected to the rotating pipe and the counterforce steel plate respectively.

[0007] Further, the rotating pipe sealing assembly comprises an annular steel plate and an annular sealing ring, the annular steel plate is connected to the inner wall of the rotating pipe along the radial direction of the rotating pipe, and the annular sealing ring is connected to one side of the annular steel plate.

[0008] Further, there is a gap between the annular steel plate, the annular sealing ring and the inner wall of the rotating pipe. There is a gap between the annular steel plate, the annular sealing ring and the outer wall of the fixed pipe.

[0009] Further, the bracket comprises a first support frame and a second support frame; the first support frame comprises a first support frame upper cover, a first support frame lower disc, a first support frame support leg and a first support frame motor. The first support frame upper cover and the first support frame lower disc are symmetrically provided with a groove fitted into the outer diameter of the mud inlet / outlet pipeline, and the first support frame upper cover and the first support frame lower disc are detachably connected. The first support frame motor has a locking and locking function, the first support frame motor shaft center is in the same height with the center of the first support frame lower disc groove and is connected to the outer wall of the first support frame support leg, and the first support frame motor rotating shaft penetrates through the first support frame support leg and the first support frame lower disc; the second support frame comprises a second support frame upper cover, a second support frame lower disc, a second support frame support leg and a second support frame motor; the second support frame upper cover and the second support frame lower disc are symmetrically provided with a groove fitted into the outer diameter of the mud inlet / outlet pipeline joint, and the second support frame upper cover and the second support frame lower disc are detachably connected; the second support frame motor has a locking and locking function, the second support frame motor shaft center is in the same height with the center of the second support frame lower disc groove and is connected to the outer wall of the second support frame support leg, and the second support frame motor rotating shaft penetrates through the second support frame support leg and the second support frame lower disc.

[0010] Further, the groove of the second support frame lower disc is in the form of a symmetric horn, the inner diameter of the groove is consistent with the outer diameter of the mud inlet / outlet pipeline joint, the opening side diameter of the groove is slightly larger than the outer diameter of the mud inlet / outlet pipeline joint, and the inner side of the groove and the opening side of the groove are smoothly transitioned.

[0011] Further, the first support frame and the second support frame are fixedly connected to the movable track of the shield machine matched pipe platform through the first support frame support leg and the second support frame support leg respectively, and the distance between the first support frame and the second support frame remains unchanged during the movement along the track.

[0012] A method for quickly connecting the mud inlet / outlet pipeline of a slurry balance shield machine, which adopts a device for quickly connecting the mud inlet / outlet pipeline of a slurry balance shield machine, and comprises the following steps:

[0013] S1: in the initial state of normal use, the fixed pipe is connected with the slurry inlet / outlet pipeline on the side of the shield machine advancing direction through the valve III and the connecting piece, and the slurry inlet / outlet pipeline on the side of the shield machine advancing direction is fixedly connected on the movable track of the shield machine supporting pipe platform; the first interface of the rotating pipe is connected with the slurry inlet / outlet pipeline on the side opposite to the shield machine advancing direction through the valve I and the connecting piece, and the second interface of the rotating pipe is connected with the valve II through the connecting piece, at this time, the valve I is in the open state, the valve II is in the closed state, the valve III is in the open state, the jack is in the clamping state; the first interface of the rotating pipe and the second interface of the rotating pipe are placed on the lower disc of the first support frame, the upper cover of the first support frame is tightly connected with the lower disc of the first support frame, and the first support frame firmly clamps the first interface of the rotating pipe and the second interface of the rotating pipe; the slurry inlet / outlet pipeline on the side opposite to the shield machine advancing direction is placed in the groove on one side of the lower disc of the second support frame, at this time, the upper cover of the second support frame is not installed;

[0014] S2: in the process of advancing the shield machine, the standby slurry inlet / outlet pipeline is hung and placed in the groove on the other side of the lower disc of the second support frame, and the upper cover of the second support frame on this side is tightly connected with the lower disc of the second support frame; the standby slurry inlet / outlet pipeline is connected with the valve II connected with the second interface of the rotating pipe through the connecting piece;

[0015] S3: after the shield machine advances, the valve III and the valve I are closed in turn, the valve II is opened to empty the slurry in the quick pipe connecting device; the connecting piece behind the valve I on the side opposite to the shield machine advancing direction and the shield machine supporting facilities pull the quick pipe connecting device and the standby slurry inlet / outlet pipeline to move to the advancing direction of the shield machine;

[0016] S4: the jack is loosened to make the annular sealing ring and the annular sealing ring out of contact, the first support frame motor and the second support frame motor are opened synchronously to make the first support frame and the second support frame rotate 180° along the clockwise or counterclockwise direction around the axis of the fixed pipe;

[0017] S5: the shield machine supporting facilities pull the quick pipe connecting device and the standby slurry inlet / outlet pipeline to move to the side opposite to the advancing direction of the shield machine, until the standby slurry inlet / outlet pipeline contacts the slurry inlet / outlet pipeline behind it on the side opposite to the advancing direction of the shield machine, and the connecting piece is used to connect them; the connection between the upper cover of the second support frame and the lower disc of the second support frame is loosened, the upper cover of the second support frame is removed, the second support frame motor is opened in reverse to make the second support frame rotate 180° along the counterclockwise or clockwise direction around the axis of the fixed pipe, the jack is clamped to make the annular sealing ring and the annular sealing ring tightly contact, and the valve III is opened.

[0018] The beneficial effects of the present application are:

[0019] Compared with the prior art, the application realizes the pre-connection of the muck inlet and outlet pipeline and the quick connection of the muck inlet and outlet pipeline after the completion of the shield pushing, greatly reduces the downtime, improves the pushing efficiency of the shield machine, and shortens the construction period of the tunnel project. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a top view of the quick connection device for the muck inlet and outlet pipeline of the slurry balance shield machine.

[0021] Figure 2 It is a front view of the quick connection device for the muck inlet and outlet pipeline of the slurry balance shield machine.

[0022] Figure 3 It is a half sectional view of the fixed pipe and the rotating pipe.

[0023] Figure 4 It is a structural schematic view of the fixed pipe sealing assembly and the rotating pipe sealing assembly.

[0024] Figure 5 It is a structural schematic view of the first support frame.

[0025] Figure 6 It is a structural schematic view of the second support frame.

[0026] Figure 7 It is a structural schematic view of the concave groove in the form of the symmetric horn mouth of the lower disc of the second support frame.

[0027] Figure 8 It is a schematic view of step S1 of the method for the quick connection of the muck inlet and outlet pipeline of the slurry balance shield machine.

[0028] Figure 9 It is a schematic view of step S2 of the method for the quick connection of the muck inlet and outlet pipeline of the slurry balance shield machine.

[0029] Figure 10 It is a schematic view of step S3 of the method for the quick connection of the muck inlet and outlet pipeline of the slurry balance shield machine.

[0030] Figure 11 It is a schematic view of step S4 of the method for the quick connection of the muck inlet and outlet pipeline of the slurry balance shield machine.

[0031] Figure 12 It is a schematic view of step S5 of the method for the quick connection of the muck inlet and outlet pipeline of the slurry balance shield machine.

[0032] In the diagram, 1 is the fixed pipe, 101 is the clamping component rib plate, 102 is the clamping component base steel plate, 103 is the clamping component jack, 104 is the fixed pipe sealing component annular steel plate, 105 is the fixed pipe sealing component annular sealing ring, 2 is the rotating pipe, 201 is the reaction component rib plate, 202 is the reaction component reaction steel plate, 203 is the rotating pipe sealing component annular steel plate, 204 is the rotating pipe sealing component annular sealing ring, 205 is the rotating pipe first interface, 206 is the rotating pipe second interface, 3 is the bracket, 31 is the first support frame, 311 is the first support frame lower plate, 312 is the first support frame upper cover, 31... 3 is the first support frame foot, 314 is the first support frame motor, 32 is the second support frame, 321 is the second support frame lower plate, 322 is the second support frame upper cover, 323 is the second support frame foot, and 324 is the second support frame motor; 401 is valve I, 402 is valve II, 403 is valve III, 501 is the connector between valve I and the mud inlet (drainage) pipe, 502 is the connector between valve II and the mud inlet (drainage) pipe to be used, 503 is the connector between the mud inlet (drainage) pipe and the mud inlet (drainage) pipe to be used, 6 is the mud inlet (drainage) pipe to be used, and 7 is the mobile track of the shield machine supporting pipe connection platform. Detailed Implementation

[0033] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. Note that the following description of the embodiments is merely illustrative and is not intended to limit its applicability or use, nor is the present invention limited to the following embodiments.

[0034] Example

[0035] like Figures 1-7 As shown, a quick-connection device for the inlet and outlet slurry pipelines of a slurry-balanced shield machine is disclosed. The device includes a fixed pipe 1, a rotating pipe 2, and a bracket 3. The fixed pipe 1, the rotating pipe 2, and the bracket 3 are coaxially arranged.

[0036] The fixed pipe 1 is composed of a top-tight assembly and a fixed pipe sealing assembly. The top-tight assembly comprises a base steel plate 102, a rib plate 101 and a jack 103. The base steel plate 102 is connected to the outer wall surface of the fixed pipe 1 along the radial direction of the fixed pipe 1. The rib plate 101 is connected to the fixed pipe 1 and the base steel plate 102 respectively. The jack 103 is connected to the base steel plate 102 through a base, and the extension direction of the jack 103 is parallel to the axial direction of the fixed pipe 1. The fixed pipe sealing assembly comprises an annular steel plate 104 and an annular sealing ring 105. The annular steel plate 104 is connected to the outer wall surface of the fixed pipe 1 along the radial direction of the fixed pipe 1. The annular sealing ring 105 is connected to one side of the annular steel plate 104. The rotating pipe 2 comprises a counterforce assembly, a rotating pipe sealing assembly, a first interface 205 and a second interface 206. The counterforce assembly comprises a counterforce steel plate 202 and a rib plate 201. The counterforce steel plate 202 is arranged correspondingly to the base steel plate 102 and connected to the outer wall surface of the rotating pipe 2 along the radial direction of the rotating pipe 2. The rib plate 201 is connected to the rotating pipe 2 and the counterforce steel plate 202 respectively.

[0037] The rotating pipe sealing assembly comprises an annular steel plate 203 and an annular sealing ring 204. The annular steel plate 203 is connected to the inner wall surface of the rotating pipe 2 along the radial direction of the rotating pipe 2. The annular sealing ring 204 is connected to one side of the annular steel plate 203.

[0038] There is a gap between the annular steel plate 104, the annular sealing ring 105 and the inner wall surface of the rotating pipe 2. There is a gap between the annular steel plate 203, the annular sealing ring 204 and the outer wall surface of the fixed pipe 1.

[0039] The bracket 3 comprises a first support frame 31 and a second support frame 32; the first support frame 31 comprises a first support frame upper cover 312, a first support frame lower disc 311, a first support frame support leg 313 and a first support frame motor 314. The first support frame upper cover 312 and the first support frame lower disc 311 are symmetrically provided with recesses fitted into the outer diameter of the mud inlet and discharge pipeline, and the first support frame upper cover 312 is detachably connected with the first support frame lower disc 311. The first support frame motor 314 has a locking and locking function, the shaft center of the first support frame motor 314 is in the same height with the center of the recess of the first support frame lower disc 311 and is connected to the outer wall of the first support frame support leg 313, and the rotating shaft of the first support frame motor 314 penetrates through the first support frame support leg 313 and the first support frame lower disc 311; the second support frame 32 comprises a second support frame upper cover 322, a second support frame lower disc 321, a second support frame support leg 323 and a second support frame motor 324; the second support frame upper cover 322 and the second support frame lower disc 321 are symmetrically provided with recesses fitted into the outer diameter of the mud inlet and discharge pipeline joint, and the second support frame upper cover 322 is detachably connected with the second support frame lower disc 321; the second support frame motor 324 has a locking and locking function, the shaft center of the second support frame motor is in the same height with the center of the recess of the second support frame lower disc 321 and is connected to the outer wall of the second support frame support leg 323, and the rotating shaft of the second support frame motor 324 penetrates through the second support frame support leg 323 and the second support frame lower disc 321.

[0040] The recess of the second support frame lower disc 321 is in the form of a symmetric horn, the inner diameter of the recess is consistent with the outer diameter of the mud inlet and discharge pipeline joint, the diameter of the opening side of the recess is slightly larger than the outer diameter of the mud inlet and discharge pipeline joint, and the inner side of the recess and the opening side of the recess are smoothly transitioned.

[0041] The first support frame 31 and the second support frame 32 are fixedly connected to the movable track 7 of the shield tunneling machine matched pipe platform through the first support frame support leg 313 and the second support frame support leg 323 respectively, and the distance between the first support frame 31 and the second support frame 32 remains unchanged during the movement along the track.

[0042] A method for quickly connecting the mud inlet and discharge pipeline of a slurry balance shield tunneling machine, which adopts the above-mentioned device for quickly connecting the mud inlet and discharge pipeline of a slurry balance shield tunneling machine, and the connection process is as shown in Figures 8-12 The method comprises the following steps:

[0043] Step 1: In the initial state of normal use, the fixed pipe 1 is connected to the slurry inlet and outlet pipeline on the side of the shield machine advancing direction through the insertion plate valve Ⅲ 403 and the clamp, and the slurry inlet and outlet pipeline on the side of the shield machine advancing direction is fixedly connected to the shield machine matching pipe platform movable track 7; the rotating pipe first interface 205 is connected to the slurry inlet and outlet pipeline on the side opposite to the shield machine advancing direction through the insertion plate valve Ⅰ 401 and the clamp 501, and the rotating pipe second interface 206 is connected to the insertion plate valve Ⅱ 402 through the clamp; at this time, the insertion plate valve Ⅰ 401 is in the open state, the insertion plate valve Ⅱ 402 is in the closed state, the insertion plate valve Ⅲ 403 is in the open state, and the jack 103 is in the clamping state; the rotating pipe first interface 205 and the rotating pipe second interface 206 are placed on the first support frame lower disc 311, the first support frame upper cover 312 is tightly connected with the first support frame lower disc 311 through bolts, and the first support frame 31 firmly clamps the rotating pipe first interface 205 and the rotating pipe second interface 206; the slurry inlet and outlet pipeline on the side opposite to the shield machine advancing direction is placed in the groove on one side of the second support frame lower disc 321, and at this time, the second support frame upper cover 322 is not installed.

[0044] Step 2: During the advancing of the shield machine, the standby slurry inlet and outlet pipeline 6 is hung and placed in the groove on the other side of the second support frame lower disc 321, and the second support frame upper cover 322 on this side is tightly connected with the second support frame lower disc 321 through bolts. The standby slurry inlet and outlet pipeline 6 is connected to the insertion plate valve Ⅱ 402 connected to the rotating pipe second interface 206 through the clamp 502.

[0045] Step 3: After the advancing of the shield machine is completed, the insertion plate valve Ⅲ 403 and the insertion plate valve Ⅰ 401 are closed in turn, and the insertion plate valve Ⅱ 402 is opened to empty the slurry in the quick pipe connection device; after the clamp 501 behind the insertion plate valve Ⅰ 401 on the side opposite to the advancing direction of the shield machine is removed, the shield machine matching facility pulls the quick pipe connection device and the standby slurry inlet and outlet pipeline 6 to move towards the advancing direction of the shield machine.

[0046] Step 4: Loosen the jack 103 to make the annular sealing ring 105 and the annular sealing ring 204 out of contact, and simultaneously open the first support frame motor 314 and the second support frame motor 324 to make the first support frame 31 and the second support frame 32 rotate 180° along the clockwise and counterclockwise directions around the axis of the fixed pipe 1.

[0047] Step 5: The shield machine supporting facilities traction quick connector device and the standby slurry pipeline 6 move to the side opposite to the advancing direction of the shield machine, until the standby slurry pipeline 6 is in contact with the slurry pipeline behind it on the side opposite to the advancing direction of the shield machine, and is connected by using the clamp 503. The bolts between the second support frame upper cover 322 and the second support frame lower disc 321 are loosened, the second support frame upper cover 322 is removed, the second support frame motor 324 is opened in reverse to make the second support frame 32 rotate 180° along the reverse clockwise direction around the fixed pipe 1 axis. The jack 103 is tightened to make the annular sealing ring 105 tightly contact with the annular sealing ring 204, and the plug valve III 403 is opened.

[0048] The above detailed description of the embodiments of the present application is only as a better embodiment of the present application, and cannot be considered as limiting the scope of the present application. Any equivalent changes and improvements made according to the present application still belong to the scope of the present patent.

Claims

1. A quick coupling device for slurry pipeline of slurry balance shield tunneling machine, characterized in that: The utility model discloses a fixed pipe, rotating pipe and bracket, the fixed pipe is connected the bracket through rotating pipe, the fixed pipe is by tight component and fixed pipe sealing component, the tight component includes base steel sheet, rib and jack, the base steel sheet is connected to the fixed pipe outer wall along the fixed pipe radial, the rib is connected with the fixed pipe and base steel sheet respectively, the jack is connected with base steel plate through base, and the telescopic direction of jack is parallel with the axial direction of fixed pipe, the fixed pipe sealing component includes annular steel sheet and annular sealing ring, the annular steel sheet is connected to the fixed pipe outer wall along the fixed pipe radial, the annular sealing ring is connected with one side of annular steel sheet, the rotating pipe includes counterforce component, rotating pipe sealing component, first interface and second interface, the counterforce component includes counterforce steel sheet and rib, the counterforce steel sheet is arranged corresponding with base steel sheet and is connected to the rotating pipe outer wall along the rotating pipe radial, the rib is connected with the rotating pipe and counterforce steel sheet respectively, the bracket includes first support frame and second support frame, the first support frame includes first support frame upper cover, first support frame lower disc, first support frame support leg and first support frame motor, the first support frame upper cover and first support frame lower disc are all symmetrically arranged with the recess that fits the outer diameter of the inlet / discharge mud pipeline, and the first support frame upper cover is detachably connected with the first support frame lower disc, the first support frame motor has locking locking function, and the first support frame motor axle center is equal in height with the first support frame lower disc recess circle center and is connected to the first support frame support leg outer wall, and the first support frame motor rotating shaft passes through the first support frame support leg and first support frame lower disc, the second support frame includes second support frame upper cover, second support frame lower disc, second support frame support leg and second support frame motor, the second support frame upper cover and second support frame lower disc are all symmetrically arranged with the recess that fits the outer diameter of the inlet / discharge mud pipeline joint, and the second support frame upper cover is detachably connected with the second support frame lower disc, the second support frame motor has locking locking function, and the second support frame motor axle center is equal in height with the second support frame lower disc recess circle center and is connected to the second support frame support leg outer wall, and the second support frame motor rotating shaft passes through the second support frame support leg and second support frame lower disc.

2. The quick coupling device for slurry pipeline of slurry balance shield tunneling machine according to claim 1, characterized in that: The rotating pipe sealing component includes annular steel sheet and annular sealing ring, the annular steel sheet is connected to the rotating pipe inner wall along the rotating pipe radial, and the annular sealing ring is connected with one side of annular steel sheet.

3. The quick connection device for slurry pipeline of slurry balance shield tunneling machine according to claim 1, characterized in that: The annular steel sheet, annular sealing ring and rotating pipe inner wall have a gap, and the annular steel sheet, annular sealing ring and fixed pipe outer wall have a gap.

4. The quick connection device for slurry pipeline of slurry balance shield tunneling machine according to claim 1, characterized in that: The second support frame lower disc recess is in the form of symmetrical horn mouth, the inside diameter of recess is consistent with the outer diameter of the inlet / discharge mud pipeline joint, the opening side diameter of recess is slightly larger than the outer diameter of the inlet / discharge mud pipeline joint, and the inside of recess and the opening side of recess are smoothly connected.

5. The quick connection device for slurry pipeline of slurry balance shield tunneling machine according to claim 1, characterized in that: The first support frame and second support frame are fixedly connected to the shield machine supporting pipe platform movable track through the first support frame support leg and second support frame support leg respectively, and the distance between the first support frame and second support frame remains unchanged during the movement along the track.

6. A method for quick connection of a slurry inlet and discharge pipeline of a slurry balance shield tunneling machine, characterized in that: The method comprises the following steps by using the quick connection device for slurry pipeline of slurry balance shield tunneling machine according to any one of claims 1-5: S1: in the initial state of normal use, the fixed pipe is connected with the slurry pipeline on the side of the advancing direction of the shield tunneling machine through the valve III and the connecting piece, and the slurry pipeline on the side of the advancing direction of the shield tunneling machine is fixedly connected on the movable track of the connection platform of the shield tunneling machine; the first interface of the rotating pipe is connected with the slurry pipeline on the side opposite to the advancing direction of the shield tunneling machine through the valve I and the connecting piece, and the second interface of the rotating pipe is connected with the valve II through the connecting piece, at this time, the valve I is in the open state, the valve II is in the closed state, the valve III is in the open state, the jack is in the clamping state; the first interface of the rotating pipe and the second interface of the rotating pipe are placed on the lower disc of the first support frame, the upper cover of the first support frame is tightly connected with the lower disc of the first support frame, and the first support frame firmly clamps the first interface of the rotating pipe and the second interface of the rotating pipe; the slurry pipeline on the side opposite to the advancing direction of the shield tunneling machine is placed in the groove on one side of the lower disc of the second support frame, at this time, the upper cover of the second support frame is not installed; S2: in the process of advancing the shield tunneling machine, the standby slurry pipeline is hung and placed in the groove on the other side of the lower disc of the second support frame, the upper cover of the second support frame on this side is tightly connected with the lower disc of the second support frame, and the standby slurry pipeline is connected with the valve II connected with the second interface of the rotating pipe through the connecting piece; S3: after the shield tunneling machine advances, the valve III and the valve I are closed in turn, the valve II is opened to empty the slurry in the quick connection device; the connecting piece behind the valve I on the side opposite to the advancing direction of the shield tunneling machine and the matched facilities of the shield tunneling machine pull the quick connection device and the standby slurry pipeline to move to the advancing direction of the shield tunneling machine; S4: the jack is loosened to make the annular sealing ring and the annular sealing ring out of contact, the first support frame motor and the second support frame motor are opened synchronously to make the first support frame and the second support frame rotate 180° along the clockwise or counterclockwise direction around the axis of the fixed pipe; S5: the matched facilities of the shield tunneling machine pull the quick connection device and the standby slurry pipeline to move to the side opposite to the advancing direction of the shield tunneling machine until the standby slurry pipeline contacts the slurry pipeline behind it on the side opposite to the advancing direction of the shield tunneling machine and is connected through the connecting piece, the connection between the upper cover of the second support frame and the lower disc of the second support frame is loosened, the upper cover of the second support frame is removed, the second support frame motor is opened in the reverse direction to make the second support frame rotate 180° along the counterclockwise or clockwise direction around the axis of the fixed pipe, the jack is clamped to make the annular sealing ring and the annular sealing ring tightly contact, and the valve III is opened.

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