Trenchless municipal engineering well pit pipeline connecting structure and method

Abstract

The invention discloses a trenchless municipal engineering well pit pipeline connecting structure which comprises a first well pit, a second well pit and guide shaft rods, the guide shaft rods are provided with through holes penetrating through the axis and used for water conveying and guiding, and a plurality of guide shaft rods are connected in an inserted mode to form a water conveying guide pipeline. The head part of the water conveying guide pipeline is arranged corresponding to the lower part of the second well pit, and the tail part of the water conveying guide pipeline is arranged corresponding to the first well pit; and a plurality of connecting pipelines are arranged, and the plurality of connecting pipelines are connected to form a main pipeline. The invention relates to the technical field of municipal engineering, in particular to a trenchless municipal engineering well pit pipeline connecting structure and method, which can conveniently realize pipeline connection between two wells and facilitate dumping treatment.

Description

Technical Field

[0001] The present invention relates to the technical field of municipal engineering, and in particular to a trenchless municipal engineering well-pit pipeline connection structure and method. Background Art

[0002] In the field of municipal engineering, pipeline laying is an important part of urban infrastructure construction. Traditional pipeline laying methods mostly use open excavation, that is, excavating the ground over a large area, then laying pipelines in the excavated trenches, and then backfilling the trenches. This method has many disadvantages: First, open excavation operations greatly interfere with urban traffic. Road closures, traffic diversions and other measures lead to traffic congestion, affecting residents' travel and urban logistics transportation, bringing many inconveniences to citizens' lives and commercial activities, and causing huge economic losses. Secondly, large-scale ground excavation seriously damages the original building facilities, urban landscapes and various existing underground pipeline layouts on the surface. For example, it may damage ancient buildings and green facilities on both sides of the road. What's more serious is that it is easy to dig up important municipal pipelines such as electricity, communications, and water supply, causing accidents such as water outages, power outages, and communication interruptions, which seriously affect the normal operation of the city and the daily life of residents. Furthermore, the ground restoration work after excavation is complicated and time-consuming, requiring a lot of manpower, material resources and time costs, and the quality and appearance of the restored ground are difficult to fully restore to the state before excavation.

[0003] With the development of urban construction concepts and technological advancement, trenchless technology has gradually emerged and been applied. Trenchless technology aims to reduce damage to existing facilities on the ground and underground and reduce the impact of construction on the environment and society. However, there are still some shortcomings in the existing trenchless pipeline connection technology: in terms of the accuracy of pipeline connection, some technologies are difficult to accurately control the docking position of the pipeline, and are prone to problems such as axis deviation and elevation deviation, resulting in poor sealing of pipeline connections, increasing the risk of water leakage and air leakage, and affecting the normal operation and service life of the pipeline system; in terms of the stability of the connection structure, some trenchless pipeline connection structures are prone to deformation, displacement or even fracture under complex underground geological conditions, such as the presence of soft soil layers and hard rock layers, or high groundwater levels, and cannot meet the requirements of long-term stable operation; in addition, in terms of construction efficiency, the discharge of soil in the existing trenchless construction process generally relies on an auxiliary cleaning equipment that can discharge the soil backwards, which has low work efficiency.

[0004] In summary, in order to solve at least some of the above problems, a trenchless municipal engineering well pit pipeline connection structure has been developed that can facilitate soil discharge and increase pipeline connection accuracy. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a trenchless municipal engineering well pipe connection structure and method, which can conveniently realize the pipe connection between two pits and facilitate soil discharge processing.

[0006] A trenchless municipal engineering well-pit pipeline connection structure, comprising a first well-pit and a second well-pit, a guide shaft rod with a through hole penetrating the axis, used for water delivery and guidance, a plurality of the guide shaft rods are plugged and connected to form a water delivery guide pipeline, the head of the water delivery guide pipeline is arranged corresponding to the lower part of the second well-pit, and the tail of the water delivery guide pipeline is arranged corresponding to the first well-pit;

[0007] A plurality of connecting pipes are provided, and a plurality of the connecting pipes are connected to form a main pipe;

[0008] It also includes a sleeve connecting pipe, one end of which is connected to the guide shaft, and the other end is used to connect with the guide connecting piece, the guide connecting piece is used to connect with the main pipeline, the tail of the main pipeline corresponds to the tail of the water delivery guide pipeline, and the head of the main pipeline corresponds to the head of the water delivery guide pipeline;

[0009] A nozzle is arranged on the casing connecting pipe and is used to spray water so that the soil is turned into mud and discharged;

[0010] A propulsion assembly is disposed in the second well pit and is used to propel the main pipeline formed by the connecting pipeline and the water delivery guide pipeline formed by the guide shaft rod, so that the guide shaft rod or the connecting pipeline moves from the second well pit to the first well pit;

[0011] It also includes a high-pressure water pump, which is placed in the first well pit and is used to connect the water supply guide pipeline to make the nozzle spray water to make the soil form mud, which flows into the second well pit or the first well pit along the main pipeline formed by the connecting pipeline to achieve the purpose of soil discharge.

[0012] As a further limitation of the present technical solution, a conical ring is provided at one end of the guide shaft, and a conical ring positioning piece is provided at the other end, and the conical ring can be inserted into the conical ring positioning piece so that the guide shaft forms the water delivery guide pipeline.

[0013] As a further limitation of the present technical solution, one end of the casing connecting pipe is plugged into the conical ring positioning piece through a pipe connector, and the guide shaft is located in the second well pit, and a casing stop block is fixed to the other end of the casing connecting pipe for limiting the guide connecting piece.

[0014] As a further limitation of the present technical solution, adjacent connecting pipes are connected together to form the main pipe, and the tail of the main pipe is connected to the sleeve connecting pipe through the guide connector.

[0015] As a further limitation of the present technical solution, the connecting pipe includes an auxiliary connecting frame, a threaded sleeve, a pipe body and a pipe connecting positioning ring, one end of the pipe body is fixedly connected to the pipe connecting positioning ring, the inner diameter of the pipe connecting positioning ring is the same as the inner diameter of the pipe body, the outer diameter of the pipe connecting positioning ring is smaller than the outer diameter of the pipe body, and the pipe connecting positioning ring and the pipe body can be plugged in and connected to form a main pipe.

[0016] As a further limitation of the technical solution, the threaded sleeve is arranged at the inner center of the other end of the pipe body, and the threaded sleeve is fixedly connected to the pipe body through the auxiliary connecting frame. The threaded sleeve can be threadedly connected to a screw rod, and the ends of adjacent screw rods are threadedly connected through double-headed nuts.

[0017] As a further limitation of the present technical solution, the guide connecting member includes a guide connecting member connecting ring, a guide shaft sleeve and reinforcing ribs. The guide shaft sleeve is arranged at the center of the guide connecting ring. The guide shaft sleeve is fixedly connected to the guide connecting ring by a plurality of reinforcing ribs. The reinforcing ribs are arranged along the radial circumference of the guide connecting ring. The sleeve connecting pipe can pass through the guide shaft sleeve. The sleeve support block can support the end of the guide shaft sleeve where the open groove is provided. The tail of the pipe main body formed by the guide connecting ring and the connecting pipe is plug-connected, and the tail of the pipe main body is the pipe connection positioning ring.

[0018] As a further limitation of the technical solution, an open groove is provided on the guide rod sleeve, the open groove is located between the reinforcing ribs, and the open groove is used to accommodate the nozzle.

[0019] As a further limitation of the present technical solution, the propulsion assembly includes a hydraulic cylinder support, a top plate and a hydraulic cylinder, the hydraulic cylinder support is installed in the second well pit, the hydraulic cylinder support is fixedly connected to the hydraulic rod of the hydraulic cylinder symmetrically arranged, the outer shell of the hydraulic cylinder is fixedly connected to the top plate, the top plate can abut the main pipeline formed by the connecting pipe and the water delivery guide pipeline formed by the guide shaft, when the hydraulic cylinder drives the top plate to move, the top plate can push the connecting pipe or the guide shaft to move, the propulsion assembly also includes a limiter, a pipeline positioning ring and a shaft rod positioning ring are arranged inside the limiter, the limiter is annular, the limiter is fixed to the side of the top plate corresponding to the first well pit, the pipeline positioning ring is arranged inside the limiter, the pipeline positioning ring surrounds the shaft rod positioning ring, the diameter of the shaft rod positioning ring is larger than the outer diameter of the guide shaft, the end of the connecting pipe without the pipeline connection positioning ring can be placed in the annular track formed by the pipeline positioning ring and the limiter, and the pipeline positioning ring, the limiter and the shaft rod positioning ring are coaxially arranged.

[0020] A method for using a trenchless municipal engineering well-pit pipe connection structure comprises the following steps:

[0021] Step 1: First, dig the first pit and the second pit at the correct location. In the second pit, workers install the propulsion assembly and install the high-pressure water pump in the first pit.

[0022] Step 2: Align the conical ring end of the first guide shaft rod with the pre-determined starting position for entering the soil, start the hydraulic cylinder in the propulsion assembly, extend the hydraulic rod of the hydraulic cylinder, push the top plate forward, the top plate contacts the guide shaft rod and applies thrust, so that the guide shaft rod begins to advance into the soil at the connection between the first pit and the second pit. When the first guide shaft rod is pushed to a certain distance, according to engineering experience and design requirements, control the hydraulic cylinder to move in the opposite direction, so that the hydraulic rod contracts and the top plate returns to its original position. At this time, ensure that the end of the guide shaft rod that contacts the top plate (i.e., the end with the conical ring positioning piece) is still in the second pit for subsequent connection operations;

[0023] Step 3: Insert the conical ring of the next guide shaft into the conical ring positioning piece of the guide shaft that is already in the soil. During the insertion process, the guide shaft can be rotated appropriately to make the connection more tight and accurate. After the connection is completed, start the propulsion assembly again to push the newly connected guide shaft to continue to move toward the first well pit;

[0024] Step 4: Repeat the above connection and advancement steps, connect and advance multiple guide shafts in sequence, until the head of the first guide shaft successfully enters the first well pit, at which point the water delivery guide pipeline composed of multiple guide shafts successfully connects the first well pit and the second well pit;

[0025] Step 5: Connect the outer end of the guide shaft in the second well pit (i.e., the end of the conical ring positioning piece) to the casing connecting pipe through the pipe connector, ensuring that the connection is firm and well sealed, and connect the casing connecting pipe to the pipe connector after passing through the guide connector. At this time, the casing connecting pipe abuts against the guide shaft casing, so that the connection between the components is tightly matched;

[0026] Step 6: Take a connecting pipe, align the pipe connection positioning ring at one end of the pipe body with the guide connecting ring of the guide connecting piece, and slowly insert the pipe to make the two tightly plugged and connected. After completing the connection between the connecting pipe and the guide piece, start the high-pressure water pump and the propulsion assembly. The high-pressure water pump starts to work and delivers water to the sprinkler through the water delivery guide pipeline. The sprinkler starts to spray water and gradually turns the surrounding soil into mud. At the same time, the hydraulic cylinder in the propulsion assembly pushes the top plate, and the top plate drives the connecting pipe to move toward the first pit. During the movement, after the connecting pipe moves a certain distance (this distance can be determined according to construction experience and design requirements to ensure that the end of the connecting pipe that contacts the top plate is in the second pit at this time), the mud formed by the sprinkler spraying water will be discharged into the second pit along the connecting pipe;

[0027] Step 7: Turn off the high-pressure water pump, disconnect the guide shaft and the high-pressure water pump, control the propulsion assembly to move in the opposite direction, retract the top plate, and insert the pipe connection positioning ring of the next connecting pipe into the pipe body of the previous connecting pipe. During the insertion process, auxiliary tools can be used for adjustment to ensure the accuracy and firmness of the plug-in connection. After the plug-in connection of the two connecting pipes is completed, the staff in the first pit removes the guide shaft in the first pit from the conical ring positioning piece, and then reconnects the high-pressure water pump to the guide shaft and turns on the high-pressure water pump, and continues to push the connecting pipe to move through the propulsion assembly;

[0028] Step 8: Repeat the above connecting and pushing steps of the connecting pipes, connect and push multiple connecting pipes in sequence, until the first well pit and the second well pit are completely connected by the main pipeline formed by the connecting pipes.

[0029] Compared with the prior art, the advantages and positive effects of the present invention are:

[0030] (1) The guide shaft plug-in structure of the water supply guide pipeline can provide accurate path guidance for subsequent pipeline connection in the complex underground environment of trenchless construction. Through the close cooperation between the tapered ring and the tapered ring positioning piece, the deviation in the pipeline docking process can be effectively reduced, ensuring the high precision of the main pipeline connection.

[0031] (2) The hydraulic cylinder in the propulsion assembly provides a powerful and stable propulsion force, and cooperates well with the top plate, limiter and other components. The top plate can evenly transmit the propulsion force to the connecting pipe and guide shaft to ensure that they move forward smoothly. The pipe positioning ring and shaft positioning ring of the limiter can accurately position the pipe and shaft during the propulsion process, effectively preventing them from offset, torsion and other adverse phenomena, greatly improving the accuracy and efficiency of construction advancement.

[0032] (3) The nozzle is set at a specific position on the casing connecting pipe. When the high-pressure water pump is started, the nozzle can spray water evenly onto the surrounding soil, causing it to quickly turn into mud. The mud flows into the well pit along the main pipeline formed by the connecting pipes. This soil discharge method avoids the cumbersome process of traditional earth excavation and transportation, reduces construction difficulty and labor intensity, and at the same time reduces the accumulation of earth on the construction site, which is conducive to keeping the construction site clean and orderly, reducing the risk of environmental pollution, and improving the environmental friendliness of the construction.

[0033] (4) It can be adjusted according to different engineering requirements. Whether it is the length or diameter of the pipeline, the distance between wells, the difference in underground geological conditions, etc., it can be met by reasonable selection and combination of guide shafts, connecting pipes and other components. It has good adaptability and can be widely used in various municipal engineering pipeline laying projects, such as the laying of water supply pipelines, drainage pipelines, gas pipelines, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0035] Figure 1 A top view of the present invention;

[0036] Figure 2 is a side view of the connecting pipe of the present invention;

[0037] Figure 3 The three-dimensional Figure 1 ;

[0038] Figure 4 For the present invention Figure 3 A partial enlarged view of the middle A;

[0039] Figure 5 For the present invention Figure 3 A partial enlarged view of point B in the middle;

[0040] Figure 6 is a three-dimensional diagram of the guide connector of the present invention;

[0041] Figure 7 The three-dimensional Figure 2 ;

[0042] Figure 8 For the present invention Figure 7 A partial enlarged view of point C in the middle;

[0043] Fig. 9 It is a partial stereogram of the present invention;

[0044] Fig.10 The three-dimensional Figure 3 ;

[0045] Fig.11 For the present invention Fig.10 A partial enlarged view of point D in the middle.

[0046] In the figure: 1. first well pit; 2. second well pit; 3. propulsion assembly; 301. hydraulic cylinder bracket; 302. top plate; 303. limiter; 3031. pipeline positioning ring; 3032. shaft positioning ring; 304. hydraulic cylinder; 4. connecting pipeline; 401. auxiliary connecting frame; 402. threaded sleeve; 403. pipeline body; 404. pipeline connecting positioning ring; 5. guide shaft; 5001. conical ring; 5002. conical ring positioning member; 6. guide connecting member; 601. guide connecting ring; 602. guide shaft sleeve; 6021. open groove; 603. reinforcing rib; 7. sleeve block; 8. sleeve connecting pipe; 801. nozzle; 802. pipeline connector. DETAILED DESCRIPTION

[0047] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes.

[0048] A trenchless municipal engineering well-pit pipeline connection structure, comprising a first well-pit 1 and a second well-pit 2, characterized in that: a guide shaft 5, with a through hole penetrating the axis, is used for water delivery and guidance, and a plurality of the guide shafts 5 are plugged and connected to form a water delivery guide pipeline, the head of the water delivery guide pipeline is arranged corresponding to the lower part of the second well-pit 2, and the tail of the water delivery guide pipeline is arranged corresponding to the first well-pit 1;

[0049] A plurality of connecting pipes 4 are provided, and a plurality of the connecting pipes 4 are connected to form a main pipe;

[0050] It also includes a sleeve connecting pipe 8, one end of which is connected to the guide shaft 5, and the other end is used to connect with the guide connecting piece 6, the guide connecting piece 6 is used to connect with the main pipeline, the tail of the main pipeline corresponds to the tail of the water delivery guide pipeline, and the head of the main pipeline corresponds to the head of the water delivery guide pipeline;

[0051] The nozzle 801 is arranged on the sleeve connecting pipe 8 and is used to spray water to turn the soil into mud and discharge it;

[0052] The propulsion assembly 3 is arranged in the second well pit 2, and is used to propel the main pipeline formed by the connecting pipe 4 and the water supply guide pipeline formed by the guide shaft 5, so that the guide shaft 5 or the connecting pipe 4 moves from the second well pit 2 to the first well pit 1.

[0053] During the advancement of the guide shaft 5, firstly, a guide shaft 5 is pushed into the soil at the connection between the first well pit 1 and the second well pit 2 in the designated area through the advancement assembly 3. After the guide shaft 5 is advanced a certain distance, the advancement assembly 3 moves back in the reverse direction (at this time, ensure that the end of the guide shaft 5 that contacts the advancement assembly 3 is in the second well pit 2), and the guide shaft 5 is connected to another guide shaft 5 drilled into the soil. Then, the advancement assembly 3 is continuously controlled to push the movement of the guide shaft 5 until the first guide shaft 5 enters the first well pit 1.

[0054] At this time, the water delivery guide pipeline formed by all the guide shafts 5 connects the first well pit 1 and the second well pit 2, and the guide shafts 5 are connected to the high-pressure water pump. When the high-pressure water pump is turned on, the nozzle 801 can spray water to form mud into mud;

[0055] During the advancement of the connecting pipe 4, after the operation of the guide shaft 5 is completed, the outer end of the guide shaft 5 in the second pit 2 is connected to the casing connecting pipe 8, and then the casing connecting pipe 8 and the guide connector 6 are connected. After one connecting pipe 4 and the guide connector 6 are connected, the high-pressure water pump and the propulsion component 3 are started, and the propulsion component 3 pushes the connecting pipe 4 to move, and the connecting pipe 4 moves a certain distance (make sure that the end of the connecting pipe 4 and the propulsion component 3 that is in contact with each other is in the second pit 2 at this time). During this process, the guide shaft 5 also moves with the movement, and the nozzle 801 sprays water to form mud, which is discharged into the second pit along the connecting pipe 4, and then the propulsion component 3 moves in the opposite direction, plugs and connects the next connecting pipe 4 with the previous connecting pipe 4, turns off the high-pressure water pump, completely removes the guide shaft 5 in the first pit 1, and then turns on the high-pressure water pump, and continues to push the connecting pipe 4 to move through the propulsion component 3, and the above process is repeated until the first pit 1 and the second pit 2 are connected by the main pipeline formed by the connecting pipe 4.

[0056] It also includes a high-pressure water pump, which is placed in the first well pit 1 and is used to connect the water supply guide pipeline so that the nozzle 801 sprays water to form mud into slurry along the main pipeline formed by the connecting pipeline 4 to flow into the second well pit 2 or the first well pit 1 to achieve the purpose of soil discharge.

[0057] A conical ring 5001 is disposed at one end of the guide shaft 5, and a conical ring positioning piece 5002 is disposed at the other end. The conical ring 5001 can be inserted into the conical ring positioning piece 5002 to enable the guide shaft 5 to form the water delivery guide pipeline.

[0058] One end of the casing connecting tube 8 is plugged and connected to the conical ring positioning piece 5002 through a pipe connector 802, and the guide shaft 5 is located in the second well pit 2. The other end of the casing connecting tube 8 is fixed with a casing stop block 7 for limiting the guide connector 6.

[0059] The adjacent connecting pipes 4 are connected together to form the main pipe, and the tail of the main pipe is connected to the sleeve connecting pipe 8 through the guide connector 6 .

[0060] The connecting pipe 4 includes an auxiliary connecting frame 401, a threaded sleeve 402, a pipe body 403 and a pipe connecting positioning ring 404. One end of the pipe body 403 is fixedly connected to the pipe connecting positioning ring 404. The inner diameter of the pipe connecting positioning ring 404 is the same as the inner diameter of the pipe body 403. The outer diameter of the pipe connecting positioning ring 404 is smaller than the outer diameter of the pipe body 403. The pipe connecting positioning ring 404 and the pipe body 403 can be plugged and connected to form a main pipe.

[0061] In some embodiments, the threaded sleeve 402 is provided at the inner center of the other end of the pipe body 403, and the threaded sleeve 402 is fixedly connected to the pipe body 403 through the auxiliary connecting frame 401. The threaded sleeve 402 can be screwed to a screw rod, and the ends of adjacent screw rods are screwed together through double-headed nuts. When connecting the connecting pipe 4, the screw rod and the threaded sleeve 402 can be screwed together, and then the double-headed nut can be used to screw together the adjacent screw rods to achieve further connection of the connecting pipe 4. This connection method is more firm and reliable.

[0062] The guide connecting member 6 includes a guide connecting member connecting ring 601, a guide shaft sleeve 602 and a reinforcing rib 603. The guide shaft sleeve 602 is arranged at the center of the guide connecting ring 601. The guide shaft sleeve 602 is fixedly connected to the guide connecting ring 601 through a plurality of reinforcing ribs 603. The reinforcing ribs 603 are arranged along the radial circumference of the guide connecting ring 601. The sleeve connecting pipe 8 can pass through the guide shaft sleeve 602, and the sleeve support block 7 can support one end of the guide shaft sleeve 602 provided with the open groove 6021. The tail of the pipe main body 403 formed by the guide connecting ring 601 and the connecting pipe 4 is plugged and connected, and the tail of the pipe main body 403 is the pipe connection positioning ring 404.

[0063] The guide rod sleeve is provided with an open groove 6021, and the open groove 6021 is located between the reinforcing ribs 603. The open groove 6021 is used to accommodate the nozzle 801 to ensure that the nozzle 801 sprays water at a suitable position to achieve effective mudification of soil.

[0064] The propulsion assembly 3 includes a hydraulic cylinder support 301, a top plate 302 and a hydraulic cylinder 304. The hydraulic cylinder support 301 is installed in the second well pit 2. The hydraulic cylinder support 301 is fixedly connected to the hydraulic rod of the hydraulic cylinder 304 which is symmetrically arranged. The shell of the hydraulic cylinder 304 is fixedly connected to the top plate 302. The top plate 302 can abut against the main pipeline formed by the connecting pipe 4 and the water delivery guide pipeline formed by the guide shaft 5. When the hydraulic cylinder 304 drives the top plate 302 to move, the top plate 302 can push the connecting pipe 4 or the guide shaft 5 to move. The propulsion assembly 3 also includes a limiter 303. The limiter 303 is provided with a pipeline positioning ring 3031 and a shaft positioning ring 3032. The limiting member 303 is in the shape of a circular ring, and the limiting member 303 is fixed to the side of the top plate 302 corresponding to the first well pit 1. The pipe positioning ring 3031 is arranged inside the limiting member 303, and the pipe positioning ring 3031 surrounds the shaft rod positioning ring 3032. The diameter of the shaft rod positioning ring 3032 is larger than the outer diameter of the guide shaft rod 5. The end of the connecting pipe 4 where the pipe connecting positioning ring 404 is not set can be placed in the annular track formed by the pipe positioning ring 3031 and the limiting member 303. The pipe positioning ring 3031, the limiting member 303 and the shaft rod positioning ring 3032 are coaxially arranged, and are used to position and limit the connecting pipe 4 and the guide shaft rod 5 during the advancement process to ensure the accuracy and stability of the advancement.

[0065] In specific use, according to the planning and design requirements of municipal engineering, the position, depth, size and other parameters of the first well pit 1 and the second well pit 2 are accurately determined. Professional geological exploration equipment is used to conduct a detailed survey of the underground geological conditions between the well pits, including soil layer type, groundwater level, rock distribution and other information, so as to provide a basis for subsequent construction.

[0066] According to the engineering requirements and geological conditions, select the guide shaft 5, connecting pipe 4, casing connecting pipe 8, guide connector 6, nozzle 801, propulsion assembly 3 and high-pressure water pump and other components of appropriate specifications, models and quantities, and conduct quality inspection on each component to ensure that it has no defects such as damage and deformation, and that the performance parameters of each component meet the design requirements.

[0067] The first well pit 1 and the second well pit 2 are dug at the correct positions. In the second well pit 2, the worker installs the propulsion assembly 3, installs the high-pressure water pump in the first well pit 1, aligns the conical ring 5001 end of the first guide shaft 5 with the pre-defined starting position for entering the soil, starts the hydraulic cylinder 304 in the propulsion assembly 3, and the hydraulic rod of the hydraulic cylinder 304 extends to push the top plate 302 forward. The top plate 302 contacts the guide shaft 5 and applies a thrust, so that the guide shaft 5 starts to be pushed into the soil at the connection between the first well pit 1 and the second well pit 2;

[0068] Specifically, during the advancement process, the construction personnel should pay close attention to the advancement direction and the depth of the guide shaft 5, which can be monitored in real time by measuring instruments. When the first guide shaft 5 is advanced to a certain distance, according to engineering experience and design requirements, the hydraulic cylinder 304 is controlled to move in the opposite direction, so that the hydraulic rod is contracted and the top plate 302 returns to its original position. At this time, it is necessary to ensure that the end of the guide shaft 5 that contacts the top plate 302 (i.e., the end with the conical ring positioning member 5002) is still in the second pit 2, so as to carry out subsequent connection operations;

[0069] Insert the conical ring 5001 of the next guide shaft 5 into the conical ring positioning piece 5002 of the guide shaft 5 already in the soil. During the insertion process, the guide shaft 5 can be rotated appropriately to make the connection more tight and accurate. After the connection is completed, start the propulsion assembly 3 again to push the newly connected guide shaft 5 to continue to move toward the first well pit 1. Repeat the above connection and propulsion steps, connect and propel multiple guide shafts 5 in sequence, until the head of the first guide shaft 5 successfully enters the first well pit 1. At this time, the water delivery guide pipeline composed of multiple guide shafts 5 successfully connects the first well pit 1 and the second well pit 2;

[0070] After the water delivery guide pipeline is connected, the outer end of the guide shaft 5 in the second well pit 2 (i.e., the end of the conical ring positioning member 5002) is connected to the casing connecting pipe 8 through the pipeline connector 802 to ensure a firm connection and good sealing. Then, the casing connecting pipe 8 is passed through the guide connector 6 and connected to the pipeline connector 802. At this time, the casing connecting pipe 8 abuts against the guide shaft casing 602, so that the connection between the components is tightly matched;

[0071] Take a connecting pipe 4, align the pipe connection positioning ring 404 at one end of its pipe body 403 with the guide connecting ring 601 of the guide connecting piece 6, and slowly insert it so that the two are tightly plugged and connected. After completing the connection between the connecting pipe 4 and the guide, start the high-pressure water pump and the propulsion component 3. The high-pressure water pump starts to work and transports water to the nozzle 801 through the water delivery guide pipeline. The nozzle 801 starts to spray water, gradually turning the surrounding soil into mud. At the same time, the hydraulic cylinder 304 in the propulsion component 3 pushes the top plate 302, and the top plate 302 drives the connecting pipe 4 to move toward the first pit 1. During the movement, after the connecting pipe 4 moves a certain distance (this distance can be determined according to construction experience and design requirements to ensure that the end of the connecting pipe 4 that contacts the top plate 302 is in the second pit 2 at this time), the mud formed by the spraying of water from the nozzle 801 will be discharged into the second pit 2 along the connecting pipe 4, and the mud will be handled by the construction personnel. The construction personnel should pay attention to the discharge of the mud to prevent the mud from clogging the pipe.

[0072] Next, turn off the high-pressure water pump, disconnect the guide shaft 5 from the high-pressure water pump, control the propulsion assembly 3 to move in the opposite direction, retract the top plate 302, and insert the pipe connection positioning ring 404 of the next connecting pipe 4 into the pipe body 403 of the previous connecting pipe 4. During the insertion process, auxiliary tools can be used for adjustment to ensure the accuracy and firmness of the plug-in connection. After the plug-in connection of the two connecting pipes 4 is completed, the staff in the first pit 1 carefully removes the guide shaft 5 located in the first pit 1 from the conical ring positioning member 5002 to avoid damage to the connected pipes, and then reconnects the high-pressure water pump to the guide shaft 5 and turns on the high-pressure water pump, and continues to push the connecting pipe 4 to move through the propulsion assembly 3. Repeat the above-mentioned connection and propulsion steps of the connecting pipe 4, connect multiple connecting pipes 4 in sequence and propel them, until the first pit 1 and the second pit 2 are completely connected by the main pipeline formed by the connecting pipe 4.

[0073] The present invention also discloses a method for using a trenchless municipal engineering well-pit pipeline connection structure, comprising the following steps:

[0074] Step 1: First, dig the first pit 1 and the second pit 2 at the correct location. In the second pit 2, the worker installs the propulsion assembly 3 and installs the high-pressure water pump in the first pit 1.

[0075] Step 2: Align the conical ring 5001 end of the first guide shaft 5 with the pre-determined starting position for burying in the soil, start the hydraulic cylinder 304 in the propulsion assembly 3, and extend the hydraulic rod of the hydraulic cylinder 304 to push the top plate 302 forward. The top plate 302 contacts the guide shaft 5 and applies a thrust, so that the guide shaft 5 begins to be pushed into the soil at the connection between the first well pit 1 and the second well pit 2. When the first guide shaft 5 is pushed to a certain distance, according to engineering experience and design requirements, control the hydraulic cylinder 304 to move in the opposite direction, so that the hydraulic rod contracts and the top plate 302 returns to its original position. At this time, ensure that the end of the guide shaft 5 that contacts the top plate 302 (i.e., the end with the conical ring positioning piece 5002) is still in the second well pit 2 to facilitate subsequent connection operations;

[0076] Step 3: insert the conical ring 5001 of the next guide shaft 5 into the conical ring positioning piece 5002 of the guide shaft 5 already in the soil. During the insertion process, the guide shaft 5 can be properly rotated to make the connection more tight and accurate. After the connection is completed, start the propulsion assembly 3 again to push the newly connected guide shaft 5 to continue to move toward the first well pit 1.

[0077] Step 4: Repeat the above connection and advancement steps, connect and advance multiple guide shafts 5 in sequence, until the head of the first guide shaft 5 successfully enters the first well pit 1. At this time, the water delivery guide pipeline composed of multiple guide shafts 5 successfully connects the first well pit 1 and the second well pit 2;

[0078] Step 5: Connect the outer end of the guide shaft 5 in the second well pit 2 (i.e., the end of the conical ring positioning member 5002) to the casing connecting pipe 8 through the pipe connector 802, ensuring that the connection is firm and well sealed, and connect the casing connecting pipe 8 to the pipe connector 802 after passing through the guide connector 6. At this time, the casing connecting pipe 8 abuts against the guide shaft casing 602, so that the connection between the components is tightly matched;

[0079] Step 6: Take a connecting pipe 4, align the pipe connection positioning ring 404 at one end of its pipe body 403 with the guide connecting ring 601 of the guide connecting piece 6, and slowly insert the pipe to make the two tightly plugged and connected. After completing the connection between the connecting pipe 4 and the guide, start the high-pressure water pump and the propulsion assembly 3. The high-pressure water pump starts to work and delivers water to the nozzle 801 through the water delivery guide pipeline. The nozzle 801 starts to spray water, gradually turning the surrounding soil into mud. At the same time, the hydraulic cylinder 304 in the propulsion assembly 3 pushes the top plate 302, and the top plate 302 drives the connecting pipe 4 to move toward the first well pit 1. During the movement, after the connecting pipe 4 moves a certain distance (this distance can be determined according to construction experience and design requirements to ensure that the end of the connecting pipe 4 that contacts the top plate 302 is in the second well pit 2 at this time), the mud formed by the water spraying of the nozzle 801 will be discharged into the second well pit 2 along the connecting pipe 4;

[0080] Step 7: Turn off the high-pressure water pump, disconnect the guide shaft 5 from the high-pressure water pump, control the propulsion assembly 3 to move in the opposite direction, retract the top plate 302, and insert the pipe connection positioning ring 404 of the next connecting pipe 4 into the pipe body 403 of the previous connecting pipe 4. During the insertion process, auxiliary tools can be used for adjustment to ensure the accuracy and firmness of the plug-in connection. After the plug-in connection of the two connecting pipes 4 is completed, the staff in the first pit 1 removes the guide shaft 5 located in the first pit 1 from the conical ring positioning member 5002, and then reconnects the high-pressure water pump to the guide shaft 5 and turns on the high-pressure water pump, and continues to push the connecting pipe 4 to move through the propulsion assembly 3;

[0081] Step eight: Repeat the above-mentioned steps of connecting and pushing the connecting pipe 4 , connect and push multiple connecting pipes 4 in sequence, until the first well pit 1 and the second well pit 2 are completely connected by the main pipe formed by the connecting pipes 4 .

[0082] The above disclosure is only a specific embodiment of the present invention, but the present invention is not limited thereto, and any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A trenchless municipal engineering well-pit pipe connection structure, comprising a first well-pit (1) and a second well-pit (2), characterized in that: A guide shaft (5) having a through hole penetrating the axis, used for water delivery and guidance, wherein a plurality of the guide shafts (5) are plugged and connected to form a water delivery guide pipeline, wherein the head of the water delivery guide pipeline is arranged corresponding to the lower part of the second well pit (2), and the tail of the water delivery guide pipeline is arranged corresponding to the first well pit (1); A plurality of connecting pipes (4) are provided, and a plurality of the connecting pipes (4) are connected to form a main pipe; It also includes a sleeve connecting pipe (8), one end of which is connected to the guide shaft (5), and the other end is used to connect to the guide connecting piece (6), the guide connecting piece (6) is used to connect to the main pipe, the tail of the main pipe corresponds to the tail of the water delivery guide pipe, and the head of the main pipe corresponds to the head of the water delivery guide pipe; A spray head (801) is arranged on the casing connecting pipe (8) and is used to spray water so that the soil is converted into mud and discharged; A propulsion assembly (3) is arranged in the second well pit (2) and is used to propel the main pipeline formed by the connecting pipe (4) and the water delivery guide pipeline formed by the guide shaft (5), so that the guide shaft (5) or the connecting pipe (4) moves from the second well pit (2) to the first well pit (1); It also includes a high-pressure water pump, which is placed in the first well pit (1) and is used to connect to the water supply guide pipeline, so that the nozzle (801) sprays water to make the soil form mud, which flows into the second well pit (2) or the first well pit (1) along the main pipeline formed by the connecting pipeline (4), thereby achieving the purpose of soil discharge.

2. The trenchless municipal engineering well-pit pipe connection structure according to claim 1 is characterized in that: A conical ring (5001) is provided at one end of the guide shaft (5), and a conical ring positioning piece (5002) is provided at the other end. The conical ring (5001) can be inserted into the conical ring positioning piece (5002) so that the guide shaft (5) forms the water delivery guide pipeline.

3. The trenchless municipal engineering well-pit pipe connection structure according to claim 2 is characterized in that: One end of the casing connecting tube (8) is plug-connected to the conical ring positioning member (5002) via a pipeline connector (802), and the guide shaft (5) is located in the second well pit (2). The other end of the casing connecting tube (8) is fixed with a casing stop block (7) for limiting the position of the guide connecting member (6).

4. The trenchless municipal engineering well-pit pipe connection structure according to claim 3 is characterized in that: The adjacent connecting pipes (4) are connected together to form the main pipe, and the tail of the main pipe is connected to the sleeve connecting pipe (8) via the guide connector (6).

5. The trenchless municipal engineering well-pit pipe connection structure according to claim 4 is characterized in that: The connecting pipe (4) comprises an auxiliary connecting frame (401), a threaded sleeve (402), a pipe body (403) and a pipe connecting positioning ring (404); one end of the pipe body (403) is fixedly connected to the pipe connecting positioning ring (404); the inner diameter of the pipe connecting positioning ring (404) is the same as the inner diameter of the pipe body (403); the outer diameter of the pipe connecting positioning ring (404) is smaller than the outer diameter of the pipe body (403); the pipe connecting positioning ring (404) and the pipe body (403) can be plugged and connected so that a plurality of the connecting pipes (4) form a main pipe.

6. The trenchless municipal engineering well-pit pipe connection structure according to claim 5 is characterized in that: The threaded sleeve (402) is arranged at the inner center of the other end of the pipe body (403); the threaded sleeve (402) is fixedly connected to the pipe body (403) via the auxiliary connecting frame (401); the threaded sleeve (402) can be threadedly connected to a screw rod; and the ends of adjacent screw rods are threadedly connected via stud nuts.

7. The trenchless municipal engineering well-pit pipe connection structure according to claim 6 is characterized in that: The guide connecting member (6) comprises a guide connecting member ring (601), a guide shaft sleeve (602) and a reinforcing rib (603). The guide connecting member ring (601) is provided with the guide shaft sleeve (602) at the center thereof. The guide shaft sleeve (602) is fixedly connected to the guide connecting member ring (601) via a plurality of reinforcing ribs (603). The reinforcing ribs (603) are arranged along the radial circumference of the guide connecting member ring (601). The sleeve connecting pipe (8) can pass through the guide shaft sleeve (602). The sleeve abutment block (7) can abut against one end of the guide shaft sleeve (602) provided with the open groove (6021). The tail of the pipe main body (403) formed by the guide connecting member ring (601) and the connecting pipe (4) is plug-connected. The tail of the pipe main body (403) is the pipe connection positioning ring (404).

8. The trenchless municipal engineering well-pit pipe connection structure according to claim 7 is characterized in that: An open groove (6021) is provided on the guide rod sleeve, and the open groove (6021) is located between the reinforcing ribs (603). The open groove (6021) is used to accommodate the spray head (801).

9. The trenchless municipal engineering well-pit pipe connection structure according to claim 8, characterized in that: The propulsion assembly (3) comprises a hydraulic cylinder support (301), a top plate (302) and a hydraulic cylinder (304); the hydraulic cylinder support (301) is installed in the second well pit (2); the hydraulic cylinder support (301) is fixedly connected to the hydraulic rod of the hydraulic cylinder (304) which is symmetrically arranged; the outer shell of the hydraulic cylinder (304) is fixedly connected to the top plate (302); the top plate (302) can abut against the main pipeline formed by the connecting pipe (4) and the water conveying guide pipeline formed by the guide shaft (5); when the hydraulic cylinder (304) drives the top plate (302) to move, the top plate (302) can push the connecting pipe (4) or the guide shaft (5) to move; the propulsion assembly (3) also comprises a stopper (303); a stopper (303) is provided inside. A pipeline positioning ring (3031) and an axle rod positioning ring (3032), wherein the limiting member (303) is annular, the limiting member (303) is fixed to a side of the top plate (302) corresponding to the first well pit (1), the pipeline positioning ring (3031) is arranged inside the limiting member (303), the pipeline positioning ring (3031) surrounds the axle rod positioning ring (3032), the diameter of the axle rod positioning ring (3032) is larger than the outer diameter of the guide axle rod (5), the end of the connecting pipeline (4) not provided with the pipeline connecting positioning ring (404) can be placed in the annular track formed by the pipeline positioning ring (3031) and the limiting member (303), and the pipeline positioning ring (3031), the limiting member (303) and the axle rod positioning ring (3032) are coaxially arranged.

10. The method for using the trenchless municipal engineering well-pit pipe connection structure according to claim 9, characterized in that: The following steps are involved: Step 1: First, dig the first pit (1) and the second pit (2) at the correct position. In the second pit (2), the worker installs the propulsion assembly (3) and installs the high-pressure water pump in the first pit (1). Step 2: Align the conical ring (5001) end of the first guide shaft (5) with the pre-determined starting position for burrowing into the soil, start the hydraulic cylinder (304) in the propulsion assembly (3), and the hydraulic rod of the hydraulic cylinder (304) extends to push the top plate (302) forward, so that the top plate (302) contacts the guide shaft (5). A thrust is applied to cause the guide shaft (5) to begin to advance into the soil at the connection point between the first well pit (1) and the second well pit (2). When the first guide shaft (5) is advanced to a certain distance, the hydraulic cylinder (304) is controlled to move in the opposite direction according to engineering experience and design requirements, so that the hydraulic rod is retracted and the top plate (302) returns to its original position. At this time, it is necessary to ensure that the end of the guide shaft (5) in contact with the top plate (302) (i.e., the end with the conical ring positioning member (5002)) is still in the second well pit (2) to facilitate subsequent connection operations; Step 3: insert the conical ring (5001) of the next guide shaft (5) into the conical ring positioning piece (5002) of the guide shaft (5) already in the soil. During the insertion process, the guide shaft (5) can be rotated appropriately to make the connection more compact and accurate. After the connection is completed, start the propulsion assembly (3) again to push the newly connected guide shaft (5) to continue to move toward the first well pit (1); Step 4: Repeat the above-mentioned connection and advancement steps, connect and advance the plurality of guide shafts (5) in sequence, until the head of the first guide shaft (5) smoothly enters the first well pit (1). At this time, the water delivery guide pipeline composed of the plurality of guide shafts (5) successfully connects the first well pit (1) and the second well pit (2); Step 5: Connect the outer end (i.e., the end of the conical ring positioning member (5002)) of the guide shaft (5) in the second well pit (2) to the casing connecting pipe (8) through the pipe connector (802), ensuring that the connection is firm and well sealed, and connect the casing connecting pipe (8) to the pipe connector (802) after passing through the guide connector (6). At this time, the casing connecting pipe (8) abuts against the guide shaft casing (602), so that the connection between the components is tightly matched; Step 6: Take a connecting pipe (4), align the pipe connection positioning ring (404) at one end of its pipe body (403) with the guide connecting ring (601) of the guide connecting piece (6), and slowly insert them so that the two are tightly plugged and connected. After the connection between the connecting pipe (4) and the guide piece is completed, start the high-pressure water pump and the propulsion assembly (3). The high-pressure water pump starts to work and transports water to the nozzle (801) through the water delivery guide pipeline. The nozzle (801) starts to spray water, gradually turning the surrounding soil into mud. When the hydraulic cylinder (304) in the propulsion assembly (3) pushes the top plate (302), the top plate (302) drives the connecting pipe (4) to move in the direction of the first well pit (1). During the movement, after the connecting pipe (4) moves a certain distance (this distance can be determined according to construction experience and design requirements to ensure that the end of the connecting pipe (4) in contact with the top plate (302) is in the second well pit (2) at this time), the mud formed by the water spraying of the nozzle (801) will be discharged into the second well pit (2) along the connecting pipe (4); Step 7: Turn off the high-pressure water pump, disconnect the guide shaft (5) and the high-pressure water pump, control the propulsion assembly (3) to move in the opposite direction, so that the top plate (302) retreats, and insert the pipe connection positioning ring (404) of the next connecting pipe (4) into the pipe body (403) of the previous connecting pipe (4). During the insertion process, auxiliary tools can be used for adjustment to ensure the accuracy and firmness of the plug-in connection. After the plug-in connection of the two connecting pipes (4) is completed, the staff in the first well pit (1) removes the guide shaft (5) located in the first well pit (1) from the conical ring positioning member (5002), and then reconnects the high-pressure water pump to the guide shaft (5) and turns on the high-pressure water pump, and continues to push the connecting pipe (4) to move through the propulsion assembly (3); Step 8: Repeat the above-mentioned steps of connecting and advancing the connecting pipe (4), connect multiple connecting pipes (4) in sequence and advance them, until the first well pit (1) and the second well pit (2) are completely connected by the main pipe formed by the connecting pipe (4).

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