Additional equipment used for slurry balance shield machine after connection without flow interruption and used for matching pipe

Abstract

The invention discloses an additional device for a slurry balance shield machine after connection without flow interruption. The additional device comprises a slurry feeding and discharging pipeline flow dividing pipeline system, a branch line connection pipe walking system, a branch line slurry feeding connection pipe system, a branch line slurry discharging connection pipe system, a branch line pipeline waste liquid collecting box, a pipeline transferring system, an operation platform, a pipe joint three-way valve and a trolley. According to the slurry feeding and discharging pipeline shunting pipeline system, an original pipeline in a slurry feeding and discharging connecting pipe area is transformed into a main-branch pipeline system, a main pipeline is controlled to be opened and closed by an original trolley pipe connecting device, branch pipelines are controlled to be opened and closed by gate valves, and dynamic conversion of slurry conveying paths is achieved by switching the using states of a main pipeline and branch pipelines in turn. Therefore, continuous tunneling and uninterrupted operation of the shield tunneling machine are realized. In the continuous tunneling process of the slurry balance shield tunneling machine, the slurry inlet and outlet pipe joints which are matched in the tunnel can be continuously connected, meanwhile, smoothness of slurry inlet and outlet pipelines is guaranteed, and therefore the technical problem that in the construction process, shut-down pipe connection causes cutoff is solved.

Description

Technical Field

[0001] This invention relates to the field of shield tunneling construction, and in particular to an auxiliary device for continuously connecting subsequent supporting pipes during the tunneling process of a slurry balance shield machine, which is suitable for the continuation operation of subsequent supporting slurry pipelines in slurry balance shield tunnel projects. Background Technology

[0002] During the tunneling process of a slurry balance shield machine, it is necessary to continuously connect and extend the slurry pipeline (inlet / outlet pipes) to keep pace with the advance of the shield machine head. Each time a slurry pipeline connection is made, the machine head needs to stop advancing, the two shut-off valves on the inlet and outlet pipes of the connection connector need to be closed, and the circulation pipeline within the slurry chamber needs to be opened to maintain soil pressure at the tunnel face. If the connection work could be carried out during continuous advancement, it would save time and improve efficiency.

[0003] While existing continuous connection technologies (such as patent CN111828023B) can achieve a certain degree of continuous connection, they adopt a dual-connector alternating working mode, lack a main-branch redundancy design, are prone to mud transport fluctuations during switching, and lack dedicated error compensation and safety protection structures, resulting in insufficient docking accuracy and operational stability.

[0004] In addition, existing technologies do not take into account the handling of residual slurry during the connection process, which can easily lead to slurry waste and environmental interference. At the same time, pipeline switching operations are complex and labor-intensive, and cannot meet the needs of efficient and stable construction. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention provides an auxiliary device for the continuous connection of downstream pipes in a slurry balance shield tunneling machine. This device allows the slurry balance shield tunneling machine to connect downstream pipe sections for slurry inlet and outlet while ensuring the smooth flow of slurry inlet and outlet pipes during continuous tunneling, thereby solving the technical problem of flow interruption caused by machine shutdown and pipe connection during construction.

[0006] To achieve the above objectives, the technical solution of the present invention is: an auxiliary device for the continuous flow connection of the supporting pipes of a slurry balance shield machine, including a slurry inlet and outlet pipeline diversion system, a branch line pipe travel system, a branch line slurry inlet pipe system, a branch line slurry outlet pipe system, a branch line waste liquid collection tank, a pipeline transfer system, an operating platform, a pipe section three-way valve, and a trolley; the slurry inlet and outlet pipeline diversion system transforms the original pipeline in the slurry inlet and outlet pipe area into a main-branch line pipeline system, wherein the main line pipeline is controlled by the original trolley pipe connector for opening and closing, and the branch line pipeline is controlled by a gate valve for opening and closing. By alternately switching the use status of the main line and the branch line, the dynamic conversion of the slurry transport path is realized, thereby realizing the continuous and uninterrupted operation of the shield machine.

[0007] Furthermore, the main-branch pipeline system includes a T-shaped tee joint installed at the front inlet and outlet slurry pipelines on the top surface of the connection platform. The horizontal outlet of the T-shaped tee joint connects to the slurry pipe of the original connection device to form the main pipeline, and the other outlet of the T-shaped tee joint connects to form a branch pipeline. A gate valve or ball valve is installed at the front end of the branch pipeline to control the opening and closing of the pipeline. The branch pipeline is raised, and its height is higher than the movable rubber slurry pipe of the main pipeline connection device to avoid mutual interference when the main-branch pipeline moves.

[0008] Furthermore, the branch line pipe-traveling system includes a double-sided parallel track beam mounted on the top of the pipe-traveling trolley, a bracket trolley, and a drive system. The track beam is made of 25# I-beams with a span of 2000mm and a top height of 825mm. The bracket trolley is mounted on the track beam via a set of traveling wheels. The traveling wheels have a double-wheel structure and sit on the lower flange of the track beam. A horizontal limiting wheel is provided on the upper part of the traveling wheels to fit against the side of the track beam to prevent side tipping and derailment.

[0009] Furthermore, the drive system includes two MS50 wheel-side motors, a gear and rack transmission structure, and a hydraulic station. The gears and racks mesh to transmit power to the trolley. The hydraulic station, in conjunction with a valve island synchronous control system, ensures that the two MS50 wheel-side motors operate synchronously, controlling the start, stop, acceleration, and deceleration of the power trailer, thereby enabling the trolley to travel smoothly in a straight line.

[0010] Furthermore, the branch line pipe traveling system also includes a safety protection device and a towing structure. The safety protection device includes anti-collision devices and travel limit switches installed at both ends of the track beam. The anti-collision devices are polyurethane buffer structures used to absorb accidental collision energy. The travel limit switches are proximity switches that send a signal to cut off the hydraulic motor power when the bracket trolley reaches its limit position. The towing structure includes a cross-hinged joint connecting the power trailer and the bracket trolley, used to effectively compensate for track installation errors and off-center loads during operation.

[0011] Furthermore, the branch line slurry inlet pipe system is installed on the bracket trolley and is used to connect the slurry inlet branch line to the specially designed three-way valve of the pipe section. It includes a branch line slurry inlet pipe, a docking actuator, an axial fine-tuning component, and a swing cylinder. The branch line slurry inlet pipe is connected to the slurry inlet interface via a rubber hose after the gate valve. The docking actuator uses the action of two sets of hydraulic cylinders to achieve three-dimensional adjustment. The swing cylinder is arranged vertically on the pipeline, with one end on the upper rigid pipe and the other end on the reinforced rubber hose. The axial fine-tuning component drives the slurry inlet interface to swing left and right and forward and backward along the axis of the three-way valve of the pipe section through the extension and retraction of the cylinder, so as to achieve fine-tuning of the pipe section three-way valve port.

[0012] Furthermore, the rubber hose has an outer wear-resistant coating and is reinforced with spiral steel wires inside.

[0013] Furthermore, the waste liquid collection box of the branch pipeline is connected to the slurry storage tank located below the pipe trolley through two flexible hoses. An empty ball valve is provided near the slurry inlet and outlet of the branch pipeline. By opening the empty ball valve, the residual slurry in the pipeline is drained into the waste liquid collection box, realizing efficient transportation and centralized storage of waste liquid.

[0014] Furthermore, the pipeline transfer system includes a pipeline crane with parallel double lifting devices and a support frame. The pipeline crane has bidirectional movement function in the x and y directions. Before lifting a special pipe section, the translation cylinder is fully extended to the top of its stroke so that the center of gravity of the pipe section is within the distance between the double lifting devices. A rubber pad is installed between the wire rope and the pipe section to improve the safety and stability of the pipe section transfer.

[0015] Furthermore, the operating platform is a detachable steel structure platform with folding guardrails and ladders. When in use, it is fixed to a stable pipe section or trolley structure by means of pins, providing a safe working surface for operators.

[0016] The beneficial effects of this invention are: First, it achieves zero-interruption mud transport, improving the continuous operation capability of the tunnel boring machine and shortening the construction cycle. Second, the main-branch line design provides backup paths, enhancing the fault tolerance of subsequent supporting pipelines. Third, the specially designed three-way valve has a simple structure, is easy to operate, and is inexpensive. Fourth, the use of quick-connect clamps reduces connection time and labor intensity. This equipment is suitable for slurry balance shield tunnel projects and has broad application value.

[0017] This equipment mainly consists of the following subsystems: slurry inlet / outlet pipeline diversion system, branch line pipeline travel system, branch line slurry inlet / outlet pipeline system, branch line waste liquid collection box, pipeline bracket, operating platform, pipe section three-way valve, trolley, etc.

[0018] The slurry inlet / outlet piping system uses a T-tee connector at the front-stage slurry inlet / outlet point on the top of the connection platform to create a main-branch dual-line system. The horizontal outlet of the T-tee connector connects to the original slurry pipe of the connection device, serving as the main line. The other outlet of the T-tee connector connects to a branch line, with a gate valve / ball valve installed at the front end to control its opening and closing. The branch line is elevated above the movable rubber slurry pipe of the main line connection device.

[0019] The branch line slurry inlet connection system features a horizontally installed end connection. High-strength reinforced rubber hoses are used in the middle section of the pipeline, offering pressure resistance, wear resistance, and vibration absorption. By swinging the hose, the connection port can be aligned with the three-way valve (branch port) of the pipe section, compensating for installation errors in the slurry pipe section and ensuring the system's reliability and durability during operation. Two hydraulic cylinders are installed on the slurry inlet pipeline, arranged at a 90° angle, each with sufficient effective stroke, to jointly adjust the position and attitude of the pipeline interface. Specifically, the cylinder located on the side extends or retracts, driving the pipeline interface towards or away from the specially designed three-way valve, facilitating approach and separation during the docking process. The cylinder located on the front, through its extension and retraction, causes the pipeline interface to swing left and right along the axis of the three-way valve, achieving precise lateral adjustment of the interface's position. Through the coordinated actions of these two sets of cylinders, alignment and docking between the pipeline and the three-way valve can be completed.

[0020] The branch slurry discharge connection system features horizontally installed end connections. High-strength reinforced rubber hoses are used in the middle sections of the pipeline, offering pressure resistance, wear resistance, and vibration absorption. By swinging the hoses, the connection port can be aligned with the three-way valve (branch port) of the pipe section, compensating for installation errors in the slurry pipe sections and ensuring the system's reliability and durability during operation. Two hydraulic cylinders are installed on this slurry discharge pipeline, arranged at a 90° angle on the back side of the pipeline, with a sufficiently long stroke. When the pipeline interface needs to be aligned or moved away from the specially designed three-way valve for docking or disengagement, the system instructs the two cylinders to extend or retract synchronously. By differentially extending the two cylinders—one extending while the other retracts—the pipeline interface can be swung left and right, achieving lateral fine-tuning and alignment during pipe docking, compensating for installation errors. Through the coordinated action of these two sets of cylinders, alignment and docking between the pipeline and the three-way valve can be completed.

[0021] The branch line inlet / outlet slurry connection system enables the system to move back and forth on the connection trolley, facilitating branch line connection operations. The pipes of the branch line inlet / outlet slurry connection system extend upwards and are fixed to a support trolley. The support trolley is mounted on double-sided parallel track beams on the top of the connection trolley. The track beams are made of 25# I-beams, with a span of 2000mm and a top height of 825mm. Each side has a double-wheel structure, straddling the lower flange of the track beam. Limit wheels are installed on the upper part of the wheels, conforming to the side of the track beam to prevent tipping and derailment. Both ends of the track beam are equipped with anti-collision devices and travel limit switches. The anti-collision devices absorb the impact force after a collision; the travel limit switches cut off the power source and stop the equipment when it reaches its limit position. The power trailer's transmission structure is a gear and rack system. The gears and rack mesh to transmit power to the support trolley, meeting the movement requirements. The power trailer's motor consists of two MS50 wheel-side motors in a parallel configuration on both sides; the motors are directly driven by the gears via splines. The power source is a hydraulic station, paired with a valve island synchronous control system, ensuring synchronized operation of the two MS50 power units to control the start, stop, acceleration, and deceleration of the power trailer. The hydraulic station provides hydraulic power to other hydraulic components on the pipeline.

[0022] The towing structure is a cross-hinged type, which compensates for displacement deviations caused by track installation errors, ground settlement, and equipment vibration, and allows the towing components to rotate and shift horizontally, reducing the additional towing torque.

[0023] The waste liquid collection tank for branch pipelines is designed to collect residual slurry. Since the branch pipeline connection lacks an on / off valve, safe disconnection requires first closing the ball valve on the pipeline to cut off the slurry source. At this point, a section of residual slurry remains in the pipeline between the ball valve and the connection. This device is used to collect the discharged slurry. By opening the small ball valve on the branch pipeline connection, the residual slurry in the pipeline is drained. The waste liquid tank is connected to a slurry storage tank located below the connection trolley via two flexible hoses, ensuring efficient transport and centralized storage of the waste liquid.

[0024] The pipeline transfer system is used to lift pipe sections from the left chassis to the right chassis to complete the pipe section assembly. It mainly consists of a pipeline crane and a support frame. The pipeline crane is a parallel double-lifting device with bidirectional (xy-y) movement capability, sufficient to lift pipe sections to the tunnel wall. Before lifting special pipe sections (equipped with a special three-way valve), the translation cylinder is fully extended to its maximum stroke, ensuring the special pipe section's center of gravity is within the spacing of the parallel double-lifting device. To protect the pipe section and prevent slippage, rubber pads must be installed between the wire rope and the pipe section. When transferring horizontally to the left or right, the crane must first smoothly lift the pipe section off the support frame and then slowly begin the horizontal transfer.

[0025] The operating platform is designed for easy movement and is installed on the slurry inlet pipe section during use; it has a ladder, allowing operators to perform pipe connection / disconnection operations on the platform.

[0026] A specially designed three-way valve is used for switching the flow in subsequent pipe sections, i.e., switching between main and branch lines. Its diameter is the same as that of the pipe section. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the left trolley of the present invention; Figure 2 This is a planar schematic diagram of the present invention; Figure 3 This is a schematic diagram of the right trolley elevation of the present invention; Figure 4 This is a schematic diagram of the slurry inlet and outlet pipeline diversion system of the present invention; Figure 5 This is a schematic diagram illustrating the switching flow of the inlet and outlet slurry pipeline diversion system of the present invention; Figure 6 This is a schematic diagram of the branch line slurry inlet pipe system of the present invention; Wherein: (a) is the front view, and (b) is the side view; Figure 7 This is a schematic diagram of the branch slurry discharge connection system of the present invention; Wherein: (a) is the front view, and (b) is the side view; Figure 8 This is a schematic diagram of the branch line pipe traveling system of the present invention; Wherein: (a) is the plan view, and (b) is the elevation view; Figure 9 This is a schematic diagram of the waste liquid collection box for the branch pipeline of the present invention; Figure 10 This is a schematic diagram of the pipeline transfer system of the present invention. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] The present invention provides an auxiliary device for the continuous flow connection of the supporting pipes of the slurry balance shield machine. The original pipeline in the slurry inlet / outlet connection area is transformed into a main-branch pipeline system. The main pipeline is controlled by the original trolley connector, and the branch pipeline is controlled by the gate valve. By switching the use status of the main line and the branch line alternately, the dynamic conversion of the slurry transportation path is realized.

[0030] A specially designed three-way valve is installed on each slurry pipe section facing the direction of the trolley's movement. This three-way valve uses a KRJ-type quick-connect clamp and includes a valve body, a rotating valve core, and a sealing assembly. The valve body has three ports that connect to the main line upstream pipeline, the main line downstream pipeline, and the branch pipeline, respectively. The flow direction is switched by manually or electrically rotating the valve core, thus selecting whether the inlet of the pipe section connects to the main line or the branch line. When the system is working, under normal tunneling conditions, the ball valve of the main line connector is open, and the branch line... With pipeline valves closed and the three-way valve set to main line conduction, slurry flows through the main line. When a new pipe section needs to be connected, the three-way valve of the upstream pipeline is switched to the branch line, while the main line ball valve is closed and the branch line valve is opened, allowing slurry to continue flowing through the branch line. At this time, pipe section disassembly and connection operations can be performed on the main line pipeline. After the connection is completed, the three-way valve is switched back to the main line, the branch line pipe opening is closed, and the main line connector ball valve is opened to restore main line flow. This cycle enables continuous, uninterrupted tunneling by the tunnel boring machine. This equipment, through coordinated control of different valves, ensures the continuity and stability of slurry delivery, reducing operation time and labor intensity. The main-branch line design provides system redundancy, enhances fault tolerance and construction safety, and significantly improves construction efficiency and economy.

[0031] This embodiment uses the illustrated structure as an example to illustrate the present invention.

[0032] like Figures 1 to 10 As shown in the figure, an auxiliary device for the continuous flow connection pipe of a slurry balance shield machine provided by an embodiment of the present invention includes: I. Main-Branch Traffic Splitting System See Figure 1-4 This system forms the basis for flow channel switching. A T-shaped tee connector 4 is welded to both the front-stage slurry inlet pipe 2 and the front-stage slurry outlet pipe 3 on the top surface of the pipe assembly platform. This connector is made of steel of the same material or with equivalent mechanical properties as the main pipe, and the weld is subjected to non-destructive testing to ensure pressure resistance.

[0033] Main pipeline: One horizontal outlet of the T-type tee connector 4 is connected to the slurry pipe of the original connector via a flange to form the main pipeline. The on / off state of the main pipeline is controlled by the ball valve integrated on the original connector.

[0034] Branch line: The vertical outlet of the T-type tee connector 14 is connected to the branch line 8, as exemplified in this embodiment. A gate valve 9 is installed at the starting end of the branch line 8 for independent control of the branch line flow. The branch line 8 is immediately raised with an upward bend after the branch point and fixed by the pipe bracket 10 to ensure that its overall pipe height H1 is always higher than the top height H2 of the movable rubber hose on the main line connector, so as to ensure that the main and branch lines do not interfere with each other when moving.

[0035] II. Branch Line Connector Travel System See Figure 7This system is used to drive the branch line interface to follow the tunnel boring machine forward and move forward to the specially designed three-way valve branch port on the special pipe section after the connecting pipe section is connected. A set of parallel track beams 12 are fixed on the top of the connecting pipe trolley with high-strength bolts. In this embodiment, the track beams 12 are made of 25# I-beams, with a span L1 of 2000mm and a top surface installation height of 825mm based on the top surface of the trolley.

[0036] Traveling mechanism: The trolley 13 is mounted on the track beam 12 via the traveling wheel set 14. The traveling wheel set 14 adopts a double-wheel structure and sits on the lower flange of the I-beam. A horizontal limiting wheel 15 is provided on the upper part, which fits against the web of the I-beam to form an anti-rollover mechanism.

[0037] Drive system: Power is provided by two MS50 hydraulic motors 16, installed in parallel on both sides, with the output shaft directly connected to the drive gear 18 via splines. A rack 129 is mounted on the top surface of the track beam 12 along the track direction. The power source is a hydraulic station 17, which uses a valve island synchronization control system to ensure the synchronous operation of the two hydraulic motors 16, thereby guaranteeing the straight-line movement of the trolley 13 without deviation or derailment.

[0038] Safety protection: Both ends of the track beam 12 are equipped with anti-collision devices 22 and travel limit switches 23. The anti-collision device 22 is a polyurethane buffer structure used to absorb the energy of accidental collisions; the travel limit switch 23 is a proximity switch that sends a signal to cut off the power of the hydraulic motor 16 when the trolley 13 reaches its limit position.

[0039] Towing structure: The power trailer 14 and the bracket trolley 13 are connected by a cross hinge joint 25. This structure can effectively compensate for track installation errors and off-center loads during operation.

[0040] III. Branch Line Grouting Pipe System See Figure 5 This system is installed on the bracket trolley 13 and is used to connect the special three-way valve of the slurry feed branch line and the pipe section.

[0041] Piping configuration: The branch inlet pipe 26 connects to the inlet port 28 via a reinforced rubber hose 27 after the gate valve. The rubber hose has an outer wear-resistant coating and is reinforced with spiral steel wire inside.

[0042] The actuator is docking with two sets of hydraulic cylinders to achieve three-dimensional adjustment.

[0043] Axial fine-tuning assembly 29: Horizontally arranged in the pipeline, with four hydraulic cylinders distributed in an X-shape. The cylinder body end is hinged to the frame of the bracket trolley 13, and the piston rod end is hinged to the support seat of the slurry inlet 28. The extension / retraction of the hydraulic cylinders drives the entire pipeline to move linearly towards / away from the three-way valve 30 of the pipe section.

[0044] Swing cylinder 31: Vertically arranged on the pipeline, one end on the upper rigid pipe and the other end on the reinforced rubber hose 27; there are two in total, one at the 12 o'clock position and one at the 9 o'clock position; the cylinder extension / retraction action drives the slurry inlet port 28 to swing left / right and forward / backward along the axis of the pipe section three-way valve 30, so as to realize the fine adjustment of the pipe port of the pipe section three-way valve 30.

[0045] IV. Branch Line Slurry Discharge Connection System See Figure 6 Its structure is similar to that of the slurry feeding system and its principle is the same.

[0046] Piping configuration: The branch slurry discharge pipe 32 is connected to the slurry discharge interface 34 via the reinforced rubber hose 33.

[0047] The actuator also uses two sets of hydraulic cylinders to achieve three-dimensional adjustment.

[0048] An axial fine-tuning component 29 is installed in the pipeline and is located on the bracket trolley 13.

[0049] Swing cylinder 35: Vertically arranged on the pipeline, one end on the upper rigid pipe and the other end on the reinforced rubber hose 33; there are two in total, one at the 4 o'clock position and the other at the 7 o'clock position; the two cylinders 35 extend or retract at the same time, driving the slurry discharge port 34 to move closer / away; when one cylinder extends, the other cylinder retracts, driving the slurry discharge port 34 to swing left and right around its fulcrum; thus realizing fine adjustment of the pipe port of the pipe section three-way valve 30.

[0050] V. Specially designed three-way valve See Figure 4 and Figure 5 The specially designed three-way valve 30 is one of the core components for flow channel switching. Its specific structure is not described in this invention but will be explained separately in other invention patents. The first port connects to the upstream pipe section, the second port connects to the downstream pipe section, and the branch port connects to the branch line interface. It is quickly connected using KRJ type clamps. The valve core allows switching between the first and second port as the inlet flow.

[0051] VI. Pipeline Transfer System See Figure 10 Used for hoisting special pipe sections.

[0052] Pipeline crane 45: This is a parallel double-lifting device with bidirectional movement in the x and y directions, and longitudinal and lateral movement capabilities. Its lifting mechanism 46 has parallel double lifting points, and the distance between the lifting points is adjusted by the translation cylinder 47. When lifting special pipe sections 48 with three-way valves, the translation cylinder 47 must first be extended to the top so that the center of gravity of the pipe section is located between the two lifting devices. Rubber pads must be added at the contact points between the wire rope and the pipe section 48. During transport, the pipe section must first be lifted off the ground and brought to a standstill. After confirming there is no risk of tipping over, it can then be moved at a low speed and smoothly.

[0053] VII. Branch Pipeline Waste Liquid Collection System See Figure 9 This system is used to recover residual slurry from the branch pipeline. A vent ball valve is installed near the branch pipeline inlet 28 and the slurry outlet 34. The residual slurry is discharged into the waste liquid collection tank 52 through this valve. The collection tank 52 is connected to the slurry storage tank located below the trolley via two flexible hoses 53.

[0054] VIII. Operating Platform It is a detachable steel structure platform with folding guardrails and ladders. When in use, it is fixed to a stable pipe section or trolley structure by means of pins, providing a safe working surface for operators.

Claims

1. An auxiliary device for the continuous flow connection pipe of a slurry balance shield machine, characterized in that, The system includes a slurry inlet and outlet pipeline diversion system, a branch line pipe travel system, a branch line slurry inlet pipe system, a branch line slurry outlet pipe system, a branch line waste liquid collection tank, a pipeline transfer system, an operating platform, pipe section three-way valves, and a trolley. The slurry inlet and outlet pipeline diversion system transforms the original pipelines in the slurry inlet and outlet pipe area into a main-branch pipeline system. The main line pipeline is controlled by the original trolley connector, while the branch line pipeline is controlled by gate valves. By alternately switching the usage status of the main line and the branch line, the slurry transport path is dynamically converted, thereby enabling the tunnel boring machine to continuously excavate without interruption.

2. The auxiliary equipment for the continuous flow connection pipe of a slurry balance shield machine according to claim 1, characterized in that, The main-branch pipeline system includes a T-shaped tee joint installed at the front inlet and outlet slurry pipelines on the top surface of the connector platform. The horizontal outlet of the T-shaped tee joint connects to the slurry pipe of the original connector to form the main pipeline, and the other outlet of the T-shaped tee joint connects to form a branch pipeline. A gate valve or ball valve is installed at the front end of the branch pipeline to control the opening and closing of the pipeline. The branch pipeline is raised, and its height is higher than the movable rubber slurry pipe of the main connector to avoid mutual interference when the main-branch pipeline moves.

3. The auxiliary equipment for the continuous flow connection pipe of a slurry balance shield machine according to claim 1, characterized in that, The branch line connection travel system includes a double-sided parallel track beam mounted on the top of the connection trolley, a bracket trolley, and a drive system. The track beam is made of 25# I-beams with a span of 2000mm and a top height of 825mm. The bracket trolley is mounted on the track beam via a set of traveling wheels. The traveling wheels have a double-wheel structure and sit on the lower flange of the track beam. A horizontal limiting wheel is provided on the upper part of the traveling wheels to fit against the side of the track beam to prevent side tipping and derailment.

4. The auxiliary equipment for the continuous flow connection pipe of a slurry balance shield machine according to claim 3, characterized in that, The drive system includes two MS50 wheel-side motors, a gear and rack transmission structure, and a hydraulic station. The gears and racks mesh to transmit power to the trolley. The hydraulic station, in conjunction with a valve island synchronous control system, ensures that the two MS50 wheel-side motors operate synchronously, controlling the start, stop, acceleration, and deceleration of the power trailer, thereby enabling the trolley to travel smoothly in a straight line.

5. The auxiliary equipment for the continuous flow connection pipe of a slurry balance shield machine according to claim 1, characterized in that, The branch line pipe traveling system also includes safety protection devices and a towing structure. The safety protection devices include anti-collision devices and travel limit switches installed at both ends of the track beam. The anti-collision devices are polyurethane buffer structures used to absorb accidental collision energy. The travel limit switches are proximity switches that send a signal to cut off the hydraulic motor power when the bracket trolley reaches its limit position. The towing structure includes a cross-hinged joint connecting the power trailer and the bracket trolley, used to effectively compensate for track installation errors and off-center loads during operation.

6. The auxiliary equipment for the continuous flow connection pipe of a slurry balance shield machine according to claim 1, characterized in that, The branch line slurry inlet pipe system is installed on the bracket trolley and is used to connect the slurry inlet branch line to the specially designed three-way valve of the pipe section. It includes a branch line slurry inlet pipe, a docking actuator, an axial fine-tuning component, and a swing cylinder. The branch line slurry inlet pipe is connected to the slurry inlet interface via a rubber hose after the gate valve. The docking actuator uses the action of two sets of hydraulic cylinders to achieve three-dimensional adjustment. The swing cylinder is arranged vertically on the pipeline, with one end on the upper rigid pipe and the other end on the reinforced rubber hose. The axial fine-tuning component drives the slurry inlet interface to swing left and right and forward and backward along the axis of the three-way valve of the pipe section through the extension and retraction of the cylinder, so as to achieve fine-tuning of the pipe section three-way valve port.

7. The auxiliary equipment for the continuous flow connection pipe of a slurry balance shield machine according to claim 6, characterized in that, The rubber hose has an outer wear-resistant coating and is reinforced with spiral steel wires inside.

8. The auxiliary equipment for the continuous flow connection pipe of a slurry balance shield machine according to claim 1, characterized in that, The waste liquid collection box of the branch pipeline is connected to the slurry storage tank located below the pipe trolley through two hoses. The slurry inlet and outlet ports of the branch pipeline are equipped with venting ball valves. By opening the venting ball valves, the residual slurry in the pipeline is drained into the waste liquid collection box, realizing efficient transportation and centralized storage of waste liquid.

9. The auxiliary equipment for the continuous flow connection pipe of a slurry balance shield machine according to claim 1, characterized in that, The pipeline transfer system includes a pipeline crane with parallel double lifting devices and a support frame. The pipeline crane has bidirectional movement function in the x and y directions. Before lifting a special pipe section, the translation cylinder is fully extended to the top of its stroke so that the center of gravity of the pipe section is within the distance between the double lifting devices. A rubber pad is installed between the wire rope and the pipe section to improve the safety and stability of the pipe section transfer.

10. The auxiliary equipment for the continuous flow connection pipe of a slurry balance shield machine according to claim 1, characterized in that, The operating platform is a detachable steel structure platform with folding guardrails and ladders. When in use, it is fixed to a stable pipe section or trolley structure by means of pins, providing a safe working surface for operators.

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