Non-excavation municipal engineering well pit pipeline connecting structure

Abstract

The utility model 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 utility model 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 utility model relates to the technical field of municipal engineering, in particular to a trenchless municipal engineering well-pit pipeline connection structure. Background Art

[0002] In the field of municipal engineering, pipeline laying is a crucial component of urban infrastructure construction. Traditional pipeline laying often relies on the open-cut method, which involves excavating large areas of the ground, laying the pipeline in the excavated trench, and then backfilling the trench. This method has numerous drawbacks. First, open-cut operations significantly disrupt urban traffic. Road closures and traffic diversions lead to traffic congestion, impacting residents' travel and urban logistics, causing significant inconvenience to citizens' lives and commercial activities, and resulting in significant economic losses. Second, large-scale excavation severely damages existing surface buildings and urban landscapes, as well as the layout of various existing underground pipelines. For example, it can damage historic buildings and roadside greenery. More seriously, excavation can easily sever important municipal pipelines, such as power, telecommunications, and water supply lines, causing water and power outages, communication outages, and other disruptions, severely impacting the normal operation of the city and residents' daily lives. Third, post-excavation ground restoration is complex and time-consuming, requiring significant manpower, material, and time resources. Furthermore, the quality and appearance of the restored ground surface are difficult to fully restore to its pre-excavation state.

[0003] With the development of urban construction concepts and technological advancements, trenchless technology has gradually emerged and gained application. Trenchless technology aims to reduce damage to existing above-ground and underground facilities and mitigate the environmental and social impacts of construction. However, existing trenchless pipe connection technologies still have some shortcomings: In terms of pipe connection accuracy, some technologies have difficulty precisely controlling the pipe docking position, which can easily lead to problems such as axis deviation and elevation deviation. This can lead to poor sealing at the pipe joints, increasing the risk of water and air leakage, and affecting the normal operation and service life of the pipeline system. In terms of connection structure stability, some trenchless pipe connection structures are prone to deformation, displacement, and even fracture in complex underground geological conditions, such as the presence of interlaced soft soil 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 removal of soil during existing trenchless construction generally relies on auxiliary cleaning equipment that can discharge the soil backwards, which is inefficient.

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

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

[0006] A trenchless municipal engineering well-pit pipe connection structure includes a first well pit and a second well pit, a guide shaft with a through hole extending through the shaft center for water delivery and guidance, and a plurality of guide shafts connected by plugging 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] There are several connecting pipes, 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 to the guide connecting piece, the guide connecting piece is used to connect to the main line, the tail of the main line corresponds to the tail of the water delivery guide line, and the head of the main line corresponds to the head of the water delivery guide line;

[0009] A nozzle is provided on the casing connecting pipe and is used to spray water to turn the soil into slurry and discharge it;

[0010] a propulsion assembly, disposed in the second well pit, for propelling the main pipeline formed by the connecting pipes and the water delivery guide pipeline formed by the guide shaft, so as to move the guide shaft or the connecting pipe from the second well pit toward 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 to the water supply guide pipeline, so that the nozzle sprays water to form mud into slurry, 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 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. The other end of the casing connecting pipe is fixed with a casing stop block 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. 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 present technical solution, the threaded sleeve is provided 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 the screw, and the ends of the adjacent screws 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 a reinforcing rib. The guide shaft sleeve is arranged in the center of the guide connecting ring. The guide shaft sleeve is fixedly connected to the guide connecting ring through 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, and the sleeve support block can support the end of the guide shaft sleeve with an open groove. 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 present technical solution, the guide rod sleeve is provided with the open groove, 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 rods of the symmetrically arranged hydraulic cylinders. The housing of the hydraulic cylinder is fixedly connected to the top plate. The top plate can abut the main line formed by the connecting pipe and the water supply guide line 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, and a pipe locating ring and a shaft locating ring are provided inside the limiter. The limiter is annular and fixed to the side of the top plate corresponding to the first well pit. The pipe locating ring is provided inside the limiter, surrounding the shaft locating ring. The diameter of the shaft locating ring is larger than the outer diameter of the guide shaft. The end of the connecting pipe not provided with the pipe connection locating ring can be placed in the annular track formed by the pipe locating ring and the limiter. The pipe locating ring, the limiter, and the shaft locating 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 in 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 with the pre-defined starting position for burial into the soil, start the hydraulic cylinder in the propulsion assembly, and extend the hydraulic rod of the hydraulic cylinder to push the top plate forward. The top plate contacts the guide shaft and applies thrust, causing the guide shaft to begin to advance into the soil at the junction of the first well pit and the second well pit. When the first guide shaft is pushed to a certain distance, according to engineering experience and design requirements, control the hydraulic cylinder to move in the opposite direction, retract the hydraulic rod, and return the top plate to its original position. At this time, ensure that the end of the guide shaft in contact with the top plate (i.e., the end with the conical ring locating piece) is still in the second well pit to facilitate 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 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 moving toward the first well pit;

[0024] Step 4: Repeat the above connection and advancement steps, sequentially connecting and advancing multiple guide shafts until the head of the first guide shaft successfully enters the first well pit. At this 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 tapered ring positioning piece) to the casing connecting pipe through the pipe connector, ensuring that the connection is firm and well sealed. Pass the casing connecting pipe through the guide connector and connect it to the pipe connector. At this time, the casing connecting pipe abuts the guide shaft casing, ensuring a tight fit between the components.

[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 connector, and slowly insert it so that the two are tightly plugged and connected. After completing the connection between the connecting pipe and the guide, start the high-pressure water pump and the propulsion assembly. The high-pressure water pump starts working and delivers water to the sprinkler through the water guide pipe. The sprinkler starts spraying water, gradually turning 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 well pit. During the movement, after the connecting pipe moves a certain distance (this distance can be determined based on construction experience and design requirements to ensure that the end of the connecting pipe in contact with the top plate is in the second well pit at this time), the mud formed by the water spraying from the sprinkler will be discharged into the second well 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 completing the plug-in connection of the two connecting pipes, the staff in the first well pit removes the guide shaft in the first well pit from the conical ring positioning piece, 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 multiple connecting pipes in sequence and push them forward 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] The guide shaft plug-in structure of the water supply guide pipeline can provide precise path guidance for subsequent pipeline connections in the complex underground environment of trenchless construction. Through the close cooperation between the tapered ring and the tapered ring positioning piece, it can effectively reduce the deviation during the pipeline docking process and ensure the high precision of the main pipeline connection.

[0031] The hydraulic cylinder in the propulsion assembly provides powerful and stable propulsion power, and works in perfect harmony with the top plate, limiters and other components. The top plate can evenly transmit the propulsion force to the connecting pipes and guide shafts to ensure their smooth forward movement. The pipe positioning ring and shaft positioning ring of the limiters accurately position the pipes and shafts during the propulsion process, effectively preventing them from offsetting, twisting and other adverse phenomena, greatly improving the accuracy and efficiency of construction advancement.

[0032] The nozzle is set at a specific position on the casing connecting pipe. When the high-pressure water pump is started, the nozzle can evenly spray water 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 tedious process of traditional earth excavation and transportation, reduces construction difficulty and labor intensity, and at the same time, reduces the accumulation of earth at 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] It can be adjusted according to different engineering requirements, whether it is the length and diameter of the pipeline, the distance between wells and pits, the differences in underground geological conditions, etc., 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 this application and constitute a part of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation on this application. Obviously, the drawings described below are only some embodiments of the utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without inventive effort. In the drawings:

[0035] Figure 1 It is a top view of the utility model;

[0036] Figure 2 It is a side view of the connecting pipe of the utility model;

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

[0038] Figure 4 For the utility model Figure 3 A partial enlarged view of point A in the middle;

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

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

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

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

[0043] Figure 9 It is a partial three-dimensional diagram of the utility model;

[0044] Figure 10 The three-dimensional working Figure 3 ;

[0045] Figure 11 For the utility model Figure 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. Limiting piece; 3031. Pipe locating ring; 3032. Shaft locating ring; 304. Hydraulic cylinder; 4. Connecting pipe; 401. Auxiliary connecting frame; 402. Threaded sleeve; 403. Pipe body; 404. Pipe connecting locating ring; 5. Guide shaft; 5001. Conical ring; 5002. Conical ring locating piece; 6. Guide connecting piece; 601. Guide connecting piece ring; 602. Guide shaft sleeve; 6021. Open groove; 603. Reinforcing rib; 7. Casing block; 8. Casing connecting pipe; 801. Nozzle; 802. Pipeline connector. DETAILED DESCRIPTION

[0047] The present invention will be further described below with reference to the accompanying drawings and implementation examples.

[0048] A trenchless municipal engineering well-pit pipe connection structure includes a first well pit 1 and a second well pit 2, characterized in that: a guide shaft 5 has a through hole penetrating the axis for water delivery and guidance, and a plurality of the guide shafts 5 are connected by plugging 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] There are several connecting pipes 4, 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 to the guide connecting piece 6, and the guide connecting piece 6 is used to connect to the main line. The tail of the main line corresponds to the tail of the water delivery guide line, and the head of the main line corresponds to the head of the water delivery guide line.

[0051] The nozzle 801 is provided on the casing connecting pipe 8 and is used to spray water to turn the soil into slurry for discharge;

[0052] The propulsion assembly 3 is arranged in the second well pit 2 and is used to propel the main line formed by the connecting pipe 4 and the water supply guide line 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, one guide shaft 5 is first pushed into the soil at the junction of the first well pit 1 and the second well pit 2 in a designated area by the propulsion assembly 3. After the guide shaft 5 is advanced a certain distance, the propulsion assembly 3 is moved back to its original position (at this time, ensuring that the end of the guide shaft 5 that contacts the propulsion assembly 3 is within the second well pit 2). The guide shaft 5 is then connected to the other guide shaft 5 drilled into the soil. The propulsion assembly 3 is then controlled to continue to push the guide shaft 5 until the first guide shaft 5 enters the first well pit 1.

[0054] At this time, the water delivery guide pipe formed by all the guide shafts 5 is connected to the first well pit 1 and the second well pit 2. 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 well 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 connecting one connecting pipe 4 and the guide connector 6, the high-pressure water pump and the propulsion assembly 3 are started, and the propulsion assembly 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 assembly 3 that is in contact with each other is in the second well pit 2 at this time). During this process, the guide shaft 5 also moves with it, and the nozzle 801 sprays water to form mud, which is discharged into the second pit along the connecting pipe 4. Then the propulsion assembly 3 moves in the opposite direction, plugs the next connecting pipe 4 and the previous connecting pipe 4 into connection, turns off the high-pressure water pump, completely removes the guide shaft 5 in the first well pit 1, and then turns on the high-pressure water pump, and continues to push the connecting pipe 4 to move through the propulsion assembly 3. The above process is repeated until the first well pit 1 and the second well 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, thereby flowing into the second well pit 2 or the first well pit 1 to achieve the purpose of soil discharge.

[0057] One end of the guide shaft 5 is provided with a conical ring 5001, and the other end is provided with a conical ring positioning piece 5002. 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.

[0058] One end of the casing connecting pipe 8 is plugged into 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 pipe 8 is fixed with a casing stop block 7 for limiting the guide connecting piece 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 in 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 the screw rod, and the ends of the 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 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 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 member ring 601. The guide shaft sleeve 602 is fixedly connected to the guide connecting member ring 601 through 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, and the sleeve support block 7 can support the end of the guide shaft sleeve 602 with an 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 into 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, ensuring 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 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 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. A pipeline positioning ring 3031 and a shaft positioning ring 3032 are provided inside the limiter 303. The limiting member 303 is annular and 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. The pipe positioning ring 3031 surrounds the shaft positioning ring 3032. The diameter of the shaft positioning ring 3032 is larger than the outer diameter of the guide shaft 5. The end of the connecting pipe 4 where the pipe connection positioning ring 404 is not provided 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 positioning ring 3032 are coaxially arranged, and are used to position and limit the connecting pipe 4 and the guide shaft 5 during the propulsion process to ensure the accuracy and stability of the propulsion.

[0065] During specific use, the location, depth, and dimensions of the first and second well pits 1 and 2 are precisely determined based on the planning and design requirements of the municipal project. Professional geological exploration equipment is used to conduct a detailed survey of the underground geology between the well pits, including soil layer type, groundwater level, rock distribution, and other information, 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] After digging the first well pit 1 and the second well pit 2 at the correct locations, workers install the propulsion assembly 3 in the second well pit 2 and the high-pressure water pump in the first well pit 1. They align the conical ring 5001 end of the first guide shaft 5 with the pre-defined starting position for burial in the soil and activate the hydraulic cylinder 304 in the propulsion assembly 3. The hydraulic rod of the hydraulic cylinder 304 extends, pushing the top plate 302 forward. The top plate 302 contacts the guide shaft 5 and applies a thrust force, causing the guide shaft 5 to begin to advance into the soil at the junction of the first well pit 1 and the second well pit 2.

[0068] Specifically, during the advancement process, construction personnel should closely monitor the advancement direction and penetration depth of the guide shaft 5, which can be monitored in real time using measuring instruments. When the first guide shaft 5 is advanced to a certain distance, based on engineering experience and design requirements, the hydraulic cylinder 304 is controlled to move in the opposite direction, causing the hydraulic rod to retract and the top plate 302 to return. At this point, it is important to ensure that the end of the guide shaft 5 in contact with the top plate 302 (i.e., the end with the tapered ring locator 5002) remains within the second pit 2 to facilitate 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 moving toward the first well pit 1. Repeat the above connection and propulsion steps, connecting and propulsing multiple guide shafts 5 in sequence until the head of the first guide shaft 5 successfully enters the first well pit 1. At this point, the water delivery guide pipeline composed of multiple guide shafts 5 is successfully connected to the first well pit 1 and the second well pit 2.

[0070] After the water delivery guide pipe is connected, the outer end of the guide shaft 5 (i.e., the end of the tapered ring positioning member 5002) in the second well pit 2 is connected to the casing connecting pipe 8 through the pipe connector 802, ensuring a secure connection and a good seal. Then, the casing connecting pipe 8 is passed through the guide connector 6 and connected to the pipe connector 802. At this point, the casing connecting pipe 8 abuts the guide shaft casing 602, ensuring a tight fit between the components.

[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 piece, start the high-pressure water pump and the propulsion assembly 3. The high-pressure water pump starts working and delivers water to the nozzle 801 through the water delivery guide pipe. 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 based on 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 from the nozzle 801 will be discharged into the second well pit 2 along the connecting pipe 4. The construction personnel will handle the mud. 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 completing the plug-in connection of the two connecting pipes 4, the staff in the first well pit 1 carefully remove the guide shaft 5 located in the first well pit 1 from the conical ring positioning member 5002 to avoid damage to the connected pipes. Then, reconnect the high-pressure water pump to the guide shaft 5 and turn on the high-pressure water pump, and continue to push the connecting pipe 4 to move through the propulsion assembly 3. Repeat the above-mentioned connection and propulsion steps of the connecting pipes 4, connect multiple connecting pipes 4 in sequence and propel them forward until the first well pit 1 and the second well pit 2 are completely connected by the main pipeline formed by the connecting pipes 4.

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

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

[0075] Step 2: Align the conical ring 5001 end of the first guide shaft 5 with the pre-defined starting position for burial 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, causing the guide shaft 5 to begin to advance into the soil at the junction of 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, retract the hydraulic rod, and return the top plate 302 to its original position. At this time, ensure that the end of the guide shaft 5 in contact with the top plate 302 (i.e., the end with the conical ring locating 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 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 moving toward the first well pit 1;

[0077] Step 4: Repeat the above connection and advancement steps to 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 point, 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 2 (i.e., the end of the tapered ring positioning member 5002) to the casing connecting pipe 8 through the pipe connector 802, ensuring a secure connection and a good seal. Pass the casing connecting pipe 8 through the guide connector 6 and connect it to the pipe connector 802. At this time, the casing connecting pipe 8 abuts the guide shaft casing 602, ensuring a tight fit between the components.

[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 it so that the two are tightly plugged and connected. After completing the connection between the connecting pipe 4 and the guide piece, start the high-pressure water pump and the propulsion assembly 3. The high-pressure water pump starts working and delivers water to the nozzle 801 through the water delivery guide pipe. 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 from 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 completing the plug-in connection of the two connecting pipes 4, 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 piece 5002, then reconnects the high-pressure water pump to the guide shaft 5, turns on the high-pressure water pump, and continues to push the connecting pipe 4 to move through the propulsion assembly 3;

[0081] Step 8: Repeat the above steps of connecting and pushing the connecting pipe 4 , connect multiple connecting pipes 4 in sequence and push them forward 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. Any changes that can be conceived by those skilled in the art should fall within the scope of protection 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) has a through hole passing through the axis, and is used for water delivery and guidance. A plurality of the guide shafts (5) are connected by plugging 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); 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 nozzle (801) is provided on the casing connecting pipe (8) and is used to spray water to convert the soil into slurry for discharge; 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 the water delivery guide pipeline to enable the nozzle (801) to spray water, so that the soil forms mud and flows along the main pipeline formed by the connecting pipeline (4) into the second well pit (2) or the first well pit (1), thereby achieving the purpose of soil discharge.

2. The trenchless municipal engineering well-pit pipe connection structure according to claim 1, characterized in that: One end of the guide shaft (5) is provided with a conical ring (5001), and the other end is provided with a conical ring positioning piece (5002). 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, characterized in that: One end of the casing connecting pipe (8) is plug-connected to the conical ring positioning member (5002) through a pipeline connector (802), and the guide shaft (5) is located in the second well pit (2). The other end of the casing connecting pipe (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, 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, characterized in that: 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) 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 a double-headed nut.

7. The trenchless municipal engineering well-pit pipe connection structure according to claim 6, characterized in that: The guide connecting member (6) comprises a guide connecting ring (601), a guide shaft sleeve (602) and a reinforcing rib (603). The guide connecting 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 ring (601) via 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). The sleeve support block (7) can support one end of the guide shaft sleeve (602) provided with an 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. 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, characterized in that: The guide rod sleeve is provided with the open groove (6021), the open groove (6021) is located between the reinforcing ribs (603), and the open groove (6021) is used to accommodate the nozzle (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 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 comprises a limiter (303). The limiter (303) is internally provided with A pipeline positioning ring (3031) and an axle rod positioning ring (3032) are provided. 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). One end of the connecting pipeline (4) not provided with the pipeline connection positioning ring (404) can be placed in the annular track formed by the pipeline positioning ring (3031) and the limiting member (303). The pipeline positioning ring (3031), the limiting member (303) and the axle rod positioning ring (3032) are coaxially arranged.

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