Pipeline replacement device and method of use thereof

Abstract

The present invention relates to the technical field of underground drainage pipe replacement, and its purpose is to provide a pipe replacement device and a method for using the same. This pipe replacement device has low construction noise, good cutting effect, short construction time, and does not require regular replacement of the cutting mechanism. The above-mentioned pipe replacement device includes: a shell, a cutting mechanism, a waste transport mechanism, and a jacking mechanism; the cutting mechanism includes a water jet cutting assembly provided at the front end of the shell; the waste transport mechanism is provided in the shell, and the waste transport mechanism is used to transport the cut pipe block from the water jet cutting assembly to the rear end of the shell; the driving end of the jacking mechanism can abut against the rear end of the shell to push the shell to move in a direction away from the jacking mechanism. The present invention solves the problem that reinforced concrete pipe replacement equipment in the prior art needs to use a jackhammer or a gear to forcefully crush the pipe wall, resulting in poor crushing effect, long construction time, huge construction noise, and the tool is easy to wear and needs to be replaced regularly.

Description

Technical Field

[0001] The present invention relates to the technical field of underground drainage pipe replacement, and in particular to a pipe replacement device and a method for using the same. Background Art

[0002] With the development of cities, drainage pipes have been used for too long, and reinforced concrete drainage pipes generally have structural damage problems, which can easily lead to sewage leakage in the drainage pipes, causing environmental pollution. To prevent this phenomenon from happening, it is necessary to replace old pipes in urban drainage systems in a timely manner. At present, there are two main methods for replacing old drainage pipes: excavation and trenchless. The excavation method is to dig up the land to expose the pipes and then replace the old pipes. However, this method will have a greater impact on residents and traffic living in the surrounding area, and may also cause damage to other pipelines and cables during the excavation process; the trenchless method is to set up a starting well and a receiving well at the starting and ending points of the construction respectively, and lower the pipe replacement equipment into the starting well. The pipe replacement equipment will break the old pipes and lay new pipes at the corresponding positions underground, thereby reducing the impact on surrounding residents and traffic.

[0003] Existing pipe replacement equipment uses pneumatic picks or cones to forcefully break the pipe walls when breaking old reinforced concrete pipes. This results in poor crushing results, long operation times, and excessive noise. Furthermore, the cutters are prone to wear and require regular replacement, increasing construction costs. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the problems in the prior art of reinforced concrete pipe replacement equipment that require the use of jackhammers or gears to forcibly crush the pipe wall, resulting in poor crushing effect, long construction time, huge construction noise, and the cutting tools are easily worn and need to be replaced regularly, thereby providing a pipe replacement equipment and a method of use thereof that has low construction noise, good cutting effect, short construction time, and does not require regular replacement of the cutting mechanism.

[0005] To this end, the present invention provides a pipeline replacement device, comprising:

[0006] case;

[0007] A cutting mechanism, the cutting mechanism comprising a water jet cutting assembly disposed at the front end of the housing;

[0008] A waste transport mechanism, the waste transport mechanism being disposed in the housing and being used to transport the cut pipe block from the water jet cutting assembly to the rear end of the housing;

[0009] A jacking mechanism, wherein a driving end of the jacking mechanism can abut against the rear end of the shell to push the shell to move in a direction away from the jacking mechanism.

[0010] Optionally, the water jet cutting assembly includes at least one water jet rotating nozzle and multiple water jet fixed nozzles, the multiple water jet fixed nozzles are arranged at circumferential intervals around the shell, and the water jet rotating nozzle is arranged on the side of the water jet fixed nozzle away from the shell.

[0011] Optionally, the cutting mechanism further includes a first mounting plate, one end of which is connected to the inner wall of the shell, and the other end of which extends out of the shell and is provided with the water jet cutting assembly.

[0012] Optionally, the waste transport mechanism includes: a receiving part, a clamping part and a transport part, the receiving part is arranged above the first mounting plate, and there is a receiving gap between the upper surface of the receiving part and the second mounting plate fixedly arranged on the inner wall of the shell, and the receiving part and the second mounting plate have a waste inlet at one end close to the water jet cutting assembly, the clamping part is arranged close to the rear end of the shell and fixedly connected to the inner wall of the shell, and the transport part is arranged at the bottom of the shell.

[0013] Optionally, a soil scraping mechanism is also included, which includes a driving member, a transmission assembly and a cutter disc. The driving member is arranged at the bottom of the shell, the driving end of the driving member is connected to the power input end of the transmission assembly, and the power output end of the transmission assembly is connected to the cutter disc.

[0014] Optionally, the transmission assembly includes a first transmission gear and a second transmission gear that are meshed together, the first transmission gear is connected to the driving end of the driving member, the second transmission gear is sleeved on the second mounting plate, and the cutter disc is fixedly connected to the end face of the second transmission gear.

[0015] Optionally, a scraping tooth assembly is provided on the cutter disc, and the scraping tooth assembly includes a plurality of first scraping teeth and a plurality of second scraping teeth arranged at intervals along the circumferential direction, and the second scraping teeth are arranged close to the outer edge of the cutter disc.

[0016] Optionally, it also includes a mud and water treatment mechanism, which includes a mud inlet, a partition, a water inlet pipe and a mud water discharge pipe. A plurality of mud inlets are provided on the end face of the cutter disc, the partition is mounted on the second mounting plate, and the partition is spaced apart from the cutter disc. The cutter disc, the partition, the shell and the second mounting plate together form a mud and water holding chamber, and a water inlet and a mud water outlet are provided on the partition, and the water inlet and the mud water outlet are respectively connected to the water inlet pipe and the mud water discharge pipe.

[0017] Optionally, the shell includes a front shell and a rear shell that are plug-connected, and an annular plate is provided on the side of the front shell close to the rear shell and the side of the rear shell close to the front shell. An adjustment mechanism for adjusting the forward direction of the shell is provided between the two annular plates on the front shell and the rear shell, and three micro inertial measurement units are also provided on the inner wall of the front shell.

[0018] A method for using a pipeline replacement device, applied to the pipeline replacement device, is characterized by comprising the following steps:

[0019] The shell is pushed into the old pipe area that needs to be replaced through the jacking mechanism;

[0020] Turning on the fixed water jet nozzle to cut the old pipe in the axial direction, and simultaneously turning on the soil scraping mechanism to cut the soil around the old pipe, and draining the mud and water through the mud and water treatment mechanism;

[0021] After the shell moves forward a certain distance, the fixed water jet nozzle and the soil scraping mechanism are closed, and the rotating water jet nozzle is opened, and the old pipe is cut circumferentially by the rotating water jet nozzle to form a pipe block;

[0022] transporting the pipe block from the water jet cutting assembly to the rear end of the housing by a waste transport mechanism;

[0023] Resetting the jacking mechanism and placing a new pipe between the jacking mechanism and the shell;

[0024] Repeat the above steps until all the old pipes are cut and all the new pipes are laid.

[0025] The present invention has the following advantages:

[0026] 1. The pipe replacement equipment provided by the present invention cuts buried reinforced concrete pipes into blocks and then transports them to the surface for centralized processing. A water jet cutting assembly is installed at the front end of the housing. High-pressure water is used to cut through the old pipe. This process eliminates the need for preheating, saving construction time and improving work efficiency. The equipment also avoids contact with the old pipe, preventing wear and tear on the water jet cutting assembly. Regular replacement is not required, saving construction costs. A waste transport mechanism within the housing transports the pipe blocks formed after cutting the old pipe to the rear end of the housing, facilitating subsequent manual transport and removal of the pipe blocks.

[0027] 2. The pipe replacement equipment provided by the present invention features a water jet cutting assembly comprising at least one rotating water jet nozzle and multiple fixed water jet nozzles. When cutting the old pipe, the fixed water jet nozzle first cuts along the axial direction of the casing. After cutting to a certain length, the rotating water jet nozzle then performs circular cutting, thus cutting the old pipe section into several pipe segments for easier transport by waste transport mechanisms. Furthermore, the use of high-pressure water for cutting increases speed and efficiency.

[0028] 3. The waste transport mechanism of the pipe replacement device provided by the present invention includes a receiving member, a gripping member, and a transport member. The receiving member is positioned above the first mounting plate to protect the first mounting plate, preventing the pipe block from falling and striking the first mounting plate, potentially damaging the water jet cutting assembly. Furthermore, the receiving member allows the pipe block to transition to the bottom of the housing, facilitating the gripping member's transfer to the transport member.

[0029] 4. In the pipe replacement equipment provided by the present invention, rock and soil cut by the cutterhead enter the mud and water holding chamber through the mud inlet. Water injected into the mud and water holding chamber through the water inlet pipe mixes with the rock and soil to form mud and water, which is then discharged through the mud and water discharge pipe. By adjusting the cutting speed and the flow rates of the water inlet and mud discharge pipes, the pressure in the mud and water holding chamber can be controlled, thereby effectively maintaining tunnel face stability. The second mounting plate extends forward of the cutterhead by a certain distance, preventing mud and water in the mud and water holding chamber from flowing into the casing and affecting construction safety, thereby increasing the upper limit of pipe expansion.

[0030] 5. The pipeline replacement equipment provided by the present invention comprises a shell including a front shell and a rear shell that are plug-connected, a micro-inertial measurement unit is installed on the inner wall of the front shell, and an annular plate is provided on the side of the front shell and the rear shell close to the other shell. An adjustment mechanism for adjusting the forward direction of the shell is provided between the two annular plates on the front shell and the rear shell. The point coordinates provided in real time by the micro-inertial measurement unit can be used to construct a three-dimensional spatial model of the front shell, which is compared with the spatial model of the old pipeline. The action of the adjustment mechanism is calculated to issue instructions for automatic control of the correction and guidance, thereby ensuring construction accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 This is a schematic diagram of the construction of the pipeline replacement equipment of the present invention;

[0033] Figure 2This is a schematic diagram of the front housing of the pipeline replacement device in Example 1 of the present invention;

[0034] Figure 3 for Figure 2 Middle AA cross-sectional view;

[0035] Figure 4 for Figure 2 Schematic diagram of the BB cutaway;

[0036] Figure 5 for Figure 2 Schematic diagram of CC cross section;

[0037] Figure 6 This is a left side view of the front housing of the pipeline replacement device in Example 1 of the present invention;

[0038] Figure 7 for Figure 6 Middle DD cross-sectional view;

[0039] Figure 8 This is a right side view of the front housing of the pipeline replacement device in Example 1 of the present invention;

[0040] Figure 9 This is a schematic diagram of the internal structure of the front shell of the pipeline replacement device in Example 1 of the present invention;

[0041] Figure 10 This is a left side oblique view of the front housing of the pipeline replacement device in Example 1 of the present invention;

[0042] Figure 11 This is a left side oblique view of the rear housing of the pipeline replacement device in Example 1 of the present invention;

[0043] Figure 12 This is a schematic diagram of the robotic arm in Example 1 of the pipeline replacement device of the present invention;

[0044] Figure 13 Schematic diagram of the new pipeline in Example 1;

[0045] Figure 14 is a schematic diagram of the transport mechanism in Example 1;

[0046] Figure 15 Schematic diagram of the front housing in Example 2;

[0047] Figure 16 This is a schematic diagram of the transportation mechanism in Example 2.

[0048] Description of reference numerals:

[0049] 1. Housing, 101. Front housing, 102. Rear housing, 103. Ring plate, 104. Correction jack, 105. Micro inertial measurement unit;

[0050] 201. Water jet cutting assembly, 2011. Water jet rotating nozzle, 2012. Water jet fixed nozzle, 202. First mounting plate, 203. Limit rod, 204. Limit rib, 205. High-definition camera, 206. Auxiliary assembly;

[0051] 301, receiving member, 3021, robotic arm, 3022, robotic arm mounting base, 303, transport member, 304, second mounting plate, 305, support rod, 306, sealing brush, 307, connecting plate;

[0052] 4. Jacking mechanism;

[0053] 501, driving member, 502, transmission assembly, 5021, first transmission gear, 5022, second transmission gear, 5023, transmission shaft, 503, cutter head, 5031, first scraping tooth, 5032, second scraping tooth;

[0054] 601, mud inlet, 602, partition, 603, water inlet pipe, 604, mud and water discharge pipe, 605, mud and water holding chamber;

[0055] 7. New pipe, 701, mounting base;

[0056] 8. Distribution box;

[0057] 901, vehicle track, 902, transport trolley, 903, slot seat, 904, connecting rod, 905, transmission wheel;

[0058] 10. Old pipes;

[0059] 11. Starting working well;

[0060] 12. Track. DETAILED DESCRIPTION

[0061] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0062] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0063] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0064] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0065] Example 1

[0066] like Figure 1 The figure shows a preferred embodiment of the pipe replacement device of the present invention. This device can be used to cut old underground concrete drainage pipes and replace them with new ones. Furthermore, this device does not require preheating and can directly cut the old pipe, resulting in a short installation time and high efficiency. It also eliminates the need for regular replacement of the cutting mechanism.

[0067] like Figure 1 As shown, the above-mentioned pipe replacement device includes: a shell 1, a cutting mechanism, a waste transport mechanism and a jacking mechanism 4. The shell 1 is cylindrical and includes a front shell 101 and a rear shell 102. The front shell 101 and the rear shell 102 are plug-in connected and sealed by a rubber sealing ring, and as shown Figure 1In the direction shown, the left side is the front end of the shell 1, and the right side is the rear end of the shell 1. An annular plate 103 is provided on the side of the front shell 101 close to the rear shell 102, and on the side of the rear shell 102 close to the front shell 101, and an adjustment mechanism for adjusting the forward direction of the shell 1 is provided on the annular plate 103 of the front shell 101. In this embodiment, the adjustment mechanism is a plurality of correction jacks 104 arranged along the circumferential direction. In addition, three micro-inertial measurement units 105 are also provided on the inner wall of the front shell 101. The three micro-inertial measurement units 105 are located in the same vertical cross-section. The position of the shell 1 can be measured by the micro-inertial measurement units 105, thereby calculating the deviation from the position of the old pipe 10, which is convenient for controlling the correction jacks 104 to correct the deviation.

[0068] like Figures 2 to 10 As shown, the cutting mechanism includes a water jet cutting assembly 201 disposed at the front end of the housing 1. The water jet cutting assembly 201 includes at least one rotating water jet nozzle 2011 and a plurality of fixed water jet nozzles 2012. The plurality of fixed water jet nozzles 2012 are spaced apart around the circumference of the housing 1, and the rotating water jet nozzle 2011 is disposed on a side of the fixed water jet nozzle 2012 away from the housing 1. Specifically, in this embodiment, the water jet cutting assembly 201 includes one rotating water jet nozzle 2011 and six fixed water jet nozzles 2012. The water spraying direction of the fixed water jet nozzle 2012 is along the radial direction of the housing 1, and the water spraying direction of the rotating water jet nozzle 2011 is inclined toward the fixed water jet nozzle 2012.

[0069] Furthermore, the cutting mechanism also includes a first mounting plate 202, one end of which is connected to the inner wall of the housing 1, and the other end extends outside the housing 1 and is provided with a water jet cutting assembly 201. Specifically, in this embodiment, the first mounting plate 202 is cylindrical and is arranged coaxially with the housing 1. One end is fixedly connected to the inner wall of the housing 1 via a limit rod 203 and a limit rib 204, and the other end extends out of the housing 1. Six mounting holes are provided on the end of the first mounting plate 202 extending from the housing 1 for installing six fixed water jet nozzles 2012. A rotatable rotating seat is also provided at the end for installing a water jet rotating nozzle 2011. The rotating seat drives the water jet rotating nozzle 2011 to rotate, so that the water jet rotating nozzle 2011 can achieve circular cutting. In addition, a high-definition camera 205 is also provided at the end of the first mounting plate 202 to monitor the construction process and transmit the construction image in real time.

[0070] The cutting mechanism also includes an auxiliary component 206, which is disposed in the rear housing 102. The auxiliary component 206 can provide high-pressure water to the water jet rotating nozzle 2011 and the water jet fixed nozzle 2012, and use the high-pressure water to cut the old pipe 10. Specifically, the auxiliary component 206 includes a water storage tank, an automatic sand controller, and a high-pressure pump. Figure 11 As shown, the automatic sand controller and the high-pressure pump are powered by the distribution box 8 provided in the rear housing 102 , and the pipes connecting the automatic sand controller and the high-pressure pump with the water jet cutting assembly 201 can be provided in the hollow cavity of the first mounting plate 202 .

[0071] The waste transport mechanism is arranged in the shell 1, and the waste transport mechanism is used to transport the cut pipe block from the water jet cutting assembly 201 to the rear end of the shell 1. Furthermore, the waste transport mechanism includes: a receiving part 301, a clamping part and a transport part 303. The receiving part 301 is arranged above the first mounting plate 202. There is a receiving gap between the upper surface of the receiving part 301 and the second mounting plate 304 fixedly arranged on the inner wall of the shell 1, and the receiving part 301 and the second mounting plate 304 close to the water jet cutting assembly 201 have a waste inlet. Specifically, in this embodiment, the receiving part 301 is an arc-shaped plate, which is covered above the first mounting plate 202 and fixedly connected to the first mounting plate 202 by a support rod 305. The second mounting plate 304 is cylindrical, and a sealing brush 306 is circumferentially provided on the inner wall of the front end. The sealing brush 306 can form a good seal with the outer wall of the old pipe 10. The second mounting plate 304 is coaxially arranged with the housing 1 and is fixedly connected to the front housing 101 via a plurality of connecting plates 307 arranged circumferentially along the inner wall of the housing 1. The diameter of the second mounting plate 304 is smaller than the diameter of the housing 1 and larger than the diameter of the receiving member 301, and its front end extends beyond the front end of the housing 1. When the old pipe 10 is surrounded by hard strata such as hard plastic clay, the water jet cutting assembly 201 is located at the front end of the second mounting plate 304, that is, the cutting point is located outside the second mounting plate 304, which can cut the hard soil and facilitate the advancement of the housing 1. The old pipe 10 enters the receiving gap between the receiving member 301 and the second mounting plate 304 from the waste inlet. After being cut into pipe blocks by the water jet cutting assembly 201, the old pipe 10 is scattered to the bottom of the second mounting plate 304 under the diversion effect of the receiving member 301.

[0072] The clamping member is arranged near the rear end of the housing 1 and is fixedly connected to the inner wall of the housing 1, and the transport member 303 is arranged at the bottom of the housing 1. Figure 11 、 12 As shown, the gripping member includes a multi-degree-of-freedom robotic arm 3021 and a robotic arm mounting base 3022. The robotic arm mounting base 3022 is fixedly mounted on the inner wall of the rear housing 102. The robotic arm 3021 is connected to the robotic arm mounting base 3022. The transport member 303 is a conveyor belt fixed to the bottom of the rear housing 102, with a space at the bottom of the conveyor belt for the pipeline to pass through. The pipe block at the bottom of the second mounting plate 304 is gripped by the robotic arm 3021 and placed on the conveyor belt, which then transports it to the rear end of the housing 1.

[0073] The driving end of the jacking mechanism 4 can abut against the rear end of the housing 1 to push the housing 1 away from the jacking mechanism 4. The jacking mechanism 4 mainly provides power for the advancement of the housing 1 and the laying of the new pipeline 7. In this embodiment, the jacking mechanism 4 includes multiple cylinders.

[0074] The pipe replacement device also includes a soil scraping mechanism, which includes a driver 501, a transmission assembly 502, and a cutterhead 503. The driver 501 is disposed at the bottom of the housing 1. The driving end of the driver 501 is connected to the power input end of the transmission assembly 502, and the power output end of the transmission assembly 502 is connected to the cutterhead 503. Specifically, in this embodiment, the driver 501 is a motor disposed at the bottom of the front housing 101. The motor drives the cutterhead 503 to rotate and cut the soil.

[0075] Furthermore, the transmission assembly 502 includes a first transmission gear 5021 and a second transmission gear 5022 that are meshed together. The first transmission gear 5021 is connected to the driving end of the driving member 501, and the second transmission gear 5022 is sleeved on the second mounting plate 304. The cutter disc 503 is fixedly connected to the end face of the second transmission gear 5022. Specifically, in this embodiment, the first transmission gear 5021 is connected to the driving member 501 via a transmission shaft 5023. The transmission shaft 5023 is disposed at the bottom of the front housing 101 and below the second mounting plate 304. The first transmission gear 5021 is a small gear, and the second transmission gear 5022 is a large gear. The cutterhead 503 is located at the front end of the housing 1, with a small gap between it and the edge of the housing 1. The cutterhead 503 is connected to the second mounting plate 304 via a roller bearing disposed on the second mounting plate 304. The roller bearing can limit the axial displacement of the cutterhead 503 and enable the cutterhead 503 to rotate circumferentially around the second mounting plate 304. The outer diameter of the cutterhead 503 is equal to the outer diameter of the housing 1. The driving member 501 drives the transmission shaft 5023 and the first transmission gear 5021 to rotate, thereby driving the second transmission gear 5022 meshing with the first transmission gear 5021 to rotate, thereby driving the cutterhead 503 connected to the end face of the second transmission gear 5022 to rotate.

[0076] Furthermore, the cutterhead 503 is provided with a scraping tooth assembly, which includes a plurality of first scraping teeth 5031 and a plurality of second scraping teeth 5032 spaced apart along the circumference. The first scraping teeth 5031 are provided on the end surface of the cutterhead 503, and the second scraping teeth 5032 are provided near the outer edge of the cutterhead 503, so that the scraping cross-section is slightly larger than the outer edge of the housing 1. When the cutterhead 503 rotates, the first scraping teeth 5031 and the plurality of second scraping teeth 5032 scrape the soil.

[0077] The pipeline replacement equipment also includes a mud and water treatment mechanism, which includes a mud inlet 601, a partition 602, a water inlet pipe 603, and a mud and water discharge pipe 604. Multiple mud inlets 601 are provided on the end surface of the cutterhead 503. The partition 602 is mounted on the second mounting plate 304 and spaced apart from the cutterhead 503. The cutterhead 503, partition 602, housing 1, and second mounting plate 304 together form a mud and water holding chamber 605. The partition 602 is provided with a water inlet and a mud and water outlet. The water inlet is connected to the water inlet pipe 603, and the mud and water outlet is connected to the mud and water discharge pipe 604. Specifically, a mud inlet 601 is provided on both sides of each first scraping tooth 5031 on the cutterhead 503, and the mud inlet 601 is located outside the second transmission gear 5022. The water inlet and the muddy water outlet are opened at the bottom of the partition 602 , and the water inlet pipe 603 and the muddy water discharge pipe 604 are also set at the bottom of the front shell 101 .

[0078] The outer diameter of the new pipe 7 is slightly smaller than the outer diameter of the shell 1. Figure 13 As shown, mounting seats 701 are provided on both sides of the bottom of the inner wall of the new pipe 7, and a transport mechanism can be provided on the mounting seats 701. Figure 14 As shown, the transport mechanism includes a track 901 and a transport trolley 902. The track 901 is set on the mounting base 701, and the transport trolley 902 can move on the track 901. The transport mechanism cooperates with the transport member 303 of the rear housing 102 to transport the pipe block to a location convenient for manual cleaning.

[0079] This embodiment also provides a method for using a pipeline replacement device, which is applied to the pipeline replacement device. Since the pipeline replacement device has the same structure as the pipeline replacement device in the above embodiment, it will not be described in detail.

[0080] The method of using the pipe replacement equipment includes the following steps:

[0081] (1) The housing 1 is pushed into the area of ​​the old pipe 10 to be replaced by the jacking mechanism 4;

[0082] First, the area of ​​the old pipeline 10 to be replaced must be determined. Three-dimensional laser scanning is then used to inspect the internal condition of the existing pipeline, obtain the coordinates of the pipeline's inner wall, and create a three-dimensional spatial model of the existing pipeline. A starting pit 11 and a receiving pit are then constructed at the starting and ending points of the construction area. These pits can be constructed using steel caisson structures. Tracks 12 are laid according to the path of the old pipeline 10, and the pipeline replacement equipment is lowered into the starting pit 11. The jacking mechanism 4 is then installed, and the housing 1 is pushed into the area of ​​the old pipeline 10.

[0083] (2) Turn on the fixed water jet nozzle 2012 to cut the old pipe 10 along the axial direction, and at the same time turn on the soil scraping mechanism to cut the soil around the old pipe 10, and the mud and water are discharged through the mud and water treatment mechanism;

[0084] As the jacking mechanism 4 pushes the housing 1 forward, the fixed water jet nozzle 2012 is simultaneously opened, and the water pump delivers water from the water tank to the fixed water jet nozzle 2012, which then sprays high-pressure water along the axial direction of the old pipe 10. Simultaneously, the driver 501 rotates the cutterhead 503, and the first and second scraping teeth 5031, 5032 on the cutterhead 503 cut the soil surrounding the old pipe 10. The scraped soil enters the mud and water holding chamber 605 through the mud inlet 601 on the cutterhead 503, where it mixes with the water discharged into the mud and water holding chamber 605 through the water inlet pipe 603 to form mud and water, which is then discharged through the mud water discharge pipe 604. By adjusting the cutting speed and the flow rates of the water inlet pipe 603 and the mud water discharge pipe 604, the mud and water pressure in the mud and water holding chamber 605 can be controlled, thereby maintaining the stability of the soil at the tunnel face.

[0085] (3) After the shell 1 moves forward for a certain distance, the fixed water jet nozzle 2012 and the soil scraping mechanism are closed, and the rotating water jet nozzle 2011 is opened. The rotating water jet nozzle 2011 cuts the old pipe 10 in a circular direction to form a pipe block;

[0086] After the jacking mechanism 4 pushes the shell 1 forward a certain distance, the fixed water jet nozzle 2012 stops spraying water and the cutter head 503 stops rotating. At this time, the rotating water jet nozzle 2011 is turned on, and the old pipe 10 is cut circumferentially by the rotating water jet nozzle 2011. The front section of the old pipe 10 is cut into multiple pipe blocks.

[0087] (4) transporting the pipe block from the water jet cutting assembly 201 to the rear end of the housing 1 through the waste transport mechanism;

[0088] The top pipe block falls onto the receiving part 301 by its own weight, and then falls to the bottom of the second mounting plate 304. The remaining blocks are on the side or slide to the bottom of the second mounting plate 304 due to gravity, and then are clamped onto the transport part 303 by the clamping part and transported to the rear end of the shell 1 by the transport part 303.

[0089] (5) Reset the jacking mechanism 4 and place the new pipe 7 between the jacking mechanism 4 and the housing 1;

[0090] The new pipe 7 is lowered from the starting working shaft 11. After the jacking mechanism 4 is reset, the new pipe 7 is set between the jacking mechanism 4 and the rear end of the shell 1. The waste transported by the transport member 303 is transferred to the transport mechanism in the new pipe 7, moved to the starting hole and lifted out of the starting working shaft 11.

[0091] (6) Repeat the above steps until all the old pipes 10 are cut and all the new pipes 7 are laid. Finally, the pipe blocks hoisted out are processed collectively.

[0092] The jacking mechanism 4 is activated again, pushing the shell 1 and the new pipe 7 forward, and repeating the above steps, cutting a section of the old pipe 10 and placing a section of the new pipe 7, until all the old pipes 10 are cut and all the new pipes 7 are laid. Finally, the pipe replacement equipment is disassembled and removed from the receiving work pit.

[0093] Furthermore, during the jacking process, the coordinates of the three micro-inertial measurement units (105) on the inner wall of the front shell (101) are acquired in real time. A three-dimensional spatial model of the shell (101) is constructed using 3D modeling software and compared with the spatial model of the old pipe (10). Corrective actions are calculated and commands are issued to automatically control the corrective jacks (104) to guide the corrective movements. A high-definition camera (205) constantly monitors the working environment, allowing for immediate control of the operating status of each component.

[0094] Post-jacking treatment: Connect the front and rear pipe sections with the updated pipe section; dismantle the working well, backfill the soil simultaneously, and build a new inspection well.

[0095] In other embodiments, the number of the rotating water jet nozzles 2011 may be two, three, etc., and the number of the fixed water jet nozzles 2012 may be four, eight, etc.

[0096] Example 2

[0097] The difference between this embodiment and embodiment 1 lies in the positions of the water jet cutting assembly 201 and the second mounting plate 304 and the transportation mechanism provided in the new pipeline 7. The remaining structures are the same and will not be described in detail.

[0098] When the old pipe 10 is surrounded by soft strata such as silt, sand, silt soil or soft plastic clay, Figure 15 As shown, the water jet cutting assembly 201 is located inside the second mounting plate 304 to prevent the high pressure water from disturbing the surrounding formations during cutting.

[0099] like Figure 16 As shown, the transportation mechanism in the new pipeline 7 includes: a slot seat 903, a connecting rod 904 and a transmission wheel 905. The two slot seats 903 are respectively set on the two mounting seats 701. A plurality of connecting rods 904 are set between the two slot seats 903, and each connecting rod 904 is provided with a plurality of transmission wheels 905.

[0100] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A pipeline replacement device, characterized in that: include: housing (1); A cutting mechanism, the cutting mechanism comprising a water jet cutting assembly (201) arranged at the front end of the housing (1); The water jet cutting assembly (201) comprises at least one water jet rotating nozzle (2011) and a plurality of water jet fixed nozzles (2012), wherein the plurality of water jet fixed nozzles (2012) are arranged at intervals around the circumference of the shell (1), and the water jet rotating nozzle (2011) is arranged on a side of the water jet fixed nozzle (2012) away from the shell (1); The cutting mechanism further comprises a first mounting plate (202), one end of the first mounting plate (202) being connected to the inner wall of the housing (1), and the other end of the first mounting plate (202) extending out of the housing (1) and being provided with the water jet cutting assembly (201); A waste transport mechanism, the waste transport mechanism being arranged in the housing (1), and being used to transport the cut pipe block from the water jet cutting assembly (201) to the rear end of the housing (1); The waste transport mechanism comprises: a receiving member (301), a clamping member and a transport member (303), wherein the receiving member (301) is arranged above the first mounting plate (202), and a receiving gap is provided between the upper surface of the receiving member (301) and a second mounting plate (304) fixedly arranged on the inner wall of the shell (1), and the receiving member (301) and the second mounting plate (304) have a waste inlet at one end close to the water jet cutting assembly (201), the clamping member is arranged close to the rear end of the shell (1) and is fixedly connected to the inner wall of the shell (1), and the transport member (303) is provided at the bottom of the shell (1); A jacking mechanism (4), wherein a driving end of the jacking mechanism (4) can abut against a rear end of the shell (1) to push the shell (1) to move in a direction away from the jacking mechanism (4); A soil scraping mechanism, comprising a driving member (501), a transmission assembly (502) and a cutter disc (503), wherein the driving member (501) is arranged at the bottom of the housing (1), the driving end of the driving member (501) is connected to the power input end of the transmission assembly (502), and the power output end of the transmission assembly (502) is connected to the cutter disc (503); A mud and water treatment mechanism, comprising a mud inlet (601), a partition (602), a water inlet pipe (603) and a mud and water discharge pipe (604); a plurality of mud inlets (601) are provided on the end surface of the cutter disc (503); the partition (602) is sleeved on the second mounting plate (304), and the partition (602) and the cutter disc (503) are spaced apart; the cutter disc (503), the partition (602), the shell (1) and the second mounting plate (304) together form a mud and water holding chamber (605); a water inlet and a mud and water outlet are provided on the partition (602); the water inlet and the mud and water outlet are connected to the water inlet pipe (603) and the mud and water discharge pipe (604) respectively.

2. The pipeline replacement equipment according to claim 1, characterized in that: The transmission assembly (502) comprises a first transmission gear (5021) and a second transmission gear (5022) that are meshed and connected, the first transmission gear (5021) being connected to the driving end of the driving member (501), the second transmission gear (5022) being sleeved on the second mounting plate (304), and the cutter disc (503) being fixedly connected to the end face of the second transmission gear (5022).

3. The pipeline replacement equipment according to claim 1, characterized in that: A scraping tooth assembly is provided on the cutter disc (503), comprising a plurality of first scraping teeth (5031) and a plurality of second scraping teeth (5032) arranged at intervals along the circumferential direction, wherein the second scraping teeth (5032) are arranged close to the outer edge of the cutter disc (503).

4. The pipeline replacement device according to any one of claims 1 to 3, characterized in that: The housing (1) comprises a front housing (101) and a rear housing (102) that are plug-connected. An annular plate (103) is provided on one side of the front housing (101) close to the rear housing (102) and on one side of the rear housing (102) close to the front housing (101). An adjustment mechanism for adjusting the forward direction of the housing (1) is provided between the two annular plates (103) on the front housing (101) and the rear housing (102). Three micro inertial measurement units (105) are also provided on the inner wall of the front housing (101).

5. A method for using a pipeline replacement device, applied to the pipeline replacement device according to any one of claims 1 to 4, characterized in that: The following steps are involved: Pushing the shell (1) into the area of ​​the old pipe (10) to be replaced by the jacking mechanism (4); Opening a water jet fixed nozzle (2012) to cut the old pipe (10) axially through the water jet fixed nozzle (2012), and simultaneously opening a soil scraping mechanism to cut the soil around the old pipe (10) through the soil scraping mechanism, and draining the mud and water through the mud and water treatment mechanism; After the shell (1) moves forward a certain distance, the fixed water jet nozzle (2012) and the soil scraping mechanism are closed, and the rotating water jet nozzle (2011) is opened, and the old pipe (10) is cut circumferentially by the rotating water jet nozzle (2011) to form a pipe block; transporting the pipe block from the water jet cutting assembly (201) to the rear end of the housing (1) via a waste transport mechanism; Resetting the jacking mechanism (4) and placing a new pipe (7) between the jacking mechanism (4) and the housing (1); Repeat the above steps until all the old pipes (10) are cut and all the new pipes (7) are laid.

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