A small-dig underground pipe-laying apparatus and method

Abstract

The embodiment of the application provides a small-range excavation underground pipeline laying device and laying method, relates to the technical field of pipeline laying, and the device comprises: a lower frame which is erected on the ground; a track which is symmetrically erected in a tunnel; a mounting plate which is mounted in the tunnel; a gas cylinder which is connected to one side of the mounting plate; a push plate which is connected to the end of the cylinder rod of the gas cylinder; and an anti-abrasion translation assembly. The application can complete pipeline laying, the whole process is laid by using single-section pipeline installation, only small-range excavation construction is needed, work efficiency is improved, during the whole process, adjacent pipelines are sealed by butt joint, tools are not needed for supporting and assisting, manual operation can be directly performed under the support of the supporting plate, the outer side of the pipeline is not abraded, the pipeline movement resistance is reduced by relying on rolling, blockage is reduced, and pipeline laying is ensured.

Description

Technical Field

[0001] This application relates to the field of pipeline laying technology, specifically to an underground pipeline laying device and method with small-scale excavation. Background Technology

[0002] Underground pipeline laying is a core construction procedure in the construction of urban municipal water supply and drainage pipe networks.

[0003] With the ongoing implementation of urban renewal, renovation of aging pipeline networks, and large-scale main water and sewage projects, engineering pipeline networks are gradually developing towards larger diameters, larger sizes, and deeper burial distances. The application rate of precast concrete pipes and steel transmission pipelines with diameters of DN1200 and above is increasing year by year. At the same time, urban built-up areas have dense underground pipelines and narrow road spaces, making the traditional open-cut laying process completely unsuitable for the needs of refined urban construction. As urban built-up areas continue to expand, the number of old residential area renovations and road and pipeline network upgrades is increasing year by year. The distribution of urban roads, green spaces, and existing underground pipelines is dense, making the traditional open-cut laying process unsuitable for the needs of refined urban construction. Traditional open-cut construction requires large-scale demolition of road surfaces and trench excavation along the pipeline route, resulting in large earthwork volumes and long construction periods. It not only damages the original road paving and green vegetation but also easily damages existing underground pipelines. In addition, long-term road occupancy during construction seriously disrupts urban traffic and residents' daily lives, and road repair also adds extra project costs, resulting in poor environmental and social benefits.

[0004] Therefore, it is particularly important to invent an underground pipeline laying device and method with small-scale excavation to solve the above problems. Summary of the Invention

[0005] This application provides an underground pipeline laying device and method for small-scale excavation to solve one of the aforementioned technical defects.

[0006] To achieve the above objectives, this application provides the following technical solution: An underground pipeline laying device with limited excavation area, comprising: Lower the landing gear and set it up on the ground; The tracks are symmetrically installed inside the tunnel; Mounting plate, installed inside the tunnel; A cylinder is connected to one side of the mounting plate; A push plate is connected to the end of the cylinder rod of the cylinder; The wear-resistant translation component is mounted on the track and can work with the push plate to make the pipe move along the track in a wear-resistant manner.

[0007] In any of the above technical solutions, the wear-resistant translation component further includes: A support frame is mounted on the track; A tray is attached to the top of the support frame; Rollers are equidistantly arranged at the bottom of the support frame, and the rollers are located inside the track; A limiting component, disposed inside the track, is used to limit the position of the support frame; A flushing assembly, mounted on the support frame, is used to flush sand and gravel along the movement path of the rollers.

[0008] In any of the above technical solutions, the limiting component further includes: The stop block is slidably mounted on the bottom wall of the track; A magnetic block is disposed on the side of the stop block facing the support frame; A baffle, connected to the bottom of the support frame, can be attracted to the magnetic block; A limiting rod is connected to the side of the support frame away from the stop block; A storage component, mounted on the track, is used to retract the stop block and the magnetic block.

[0009] In any of the above technical solutions, the storage component further includes: A storage slot is formed on the bottom wall of the track; A sliding rod is connected to the bottom wall of the storage slot, and the stop block is slidably mounted on the sliding rod; The first spring is sleeved on the outside of the slide rod, and its two ends are respectively connected to the stop block and the bottom wall of the storage groove; The first electromagnet is connected to the bottom wall of the storage slot and can attract the stop block to descend when energized; The controller is mounted on the mounting plate.

[0010] In any of the above technical solutions, the rinsing assembly further includes: The nozzle is connected to the bottom of the support frame; The nozzles are equidistantly positioned on the outer side of the nozzle pipe; A water supply assembly, mounted on the support frame, is capable of injecting groundwater into the nozzle.

[0011] In any of the above technical solutions, the water supply component further includes: A pump body is connected to the support frame, and one end of the pump body is connected to the nozzle. A hose is connected to the other end of the pump body; A storage battery, mounted on the support frame, supplies power to the pump body; A filter assembly, located at the bottom of the hose, is used to filter impurities in the groundwater.

[0012] In any of the above technical solutions, the filtering component further includes: The tube head is connected to the bottom end of the hose; A filter screen is disposed inside the tube head; A vibration assembly, disposed inside the tube head, enables the filter screen to vibrate.

[0013] In any of the above technical solutions, the vibration component further includes: Connecting blocks are symmetrically connected to the outside of the filter screen, and the connecting blocks are slidably installed on the inner wall of the tube head; A suction rod is attached to the top of the connecting block; The second spring is sleeved on the outside of the suction rod; The second electromagnet is connected inside the tube head and can attract the suction rod when energized.

[0014] In any of the above technical solutions, the track is further provided with a horizontal section and an inclined section, and the support frame can cooperate with the roller to slide down the inclined section to the stop.

[0015] The method for laying underground pipelines using the small-scale excavation underground pipeline laying device described above includes the following steps: S1. In use, the pipe is lifted by the lifting equipment and then lowered onto the wear-resistant translation component by the lowering frame. S2. By starting the cylinder, the cylinder rod extends and moves the push plate to push the pipe, causing the pipe to leave the entrance of the lowering frame. Then the cylinder shortens and the above operation is repeated to push the next matching pipe, so that the pipe connects with the previous pipe and the two pipes are pushed forward together. S3. Subsequently, repeat the above operations to connect and advance multiple pipes, eventually pushing them to the designated position to engage with the area to be laid. The pre-laid pipes use socket-type prefabricated pipes (common for concrete pipes and large-size steel main pipes), with an integrated prefabricated double-layer sealing structure at the pipe ends. Each pipe is manually pushed and pulled back to achieve connection and sealing, thus completing the pipe laying.

[0016] The underground pipeline laying device and method with small-scale excavation provided in this application embodiment have the following technical advantages compared with the prior art: This invention enables the laying of pipelines using a single-section pipeline installation method, requiring only a small area of ​​excavation, thus improving work efficiency. During the process, when adjacent pipelines are joined and sealed, no tools are needed for support; manual operation can be performed directly under the support of a pallet. Furthermore, the outer side of the pipeline is not subjected to wear, and the rolling mechanism reduces pipeline movement resistance, minimizes jamming, and ensures smooth pipeline laying.

[0017] It should be understood that both the foregoing general description and the following detailed description are for illustrative purposes and do not necessarily limit the scope of this disclosure. The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate the subject matter of this disclosure. Furthermore, the specification and drawings serve to explain the principles of this disclosure. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the specific embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation of this application.

[0019] Figure 1 This is a schematic diagram of the structure of an underground pipeline laying device for small-scale excavation according to an embodiment of the present disclosure; Figure 2 This is a schematic diagram of a portion of the structure of an embodiment of this disclosure; Figure 3 This is a schematic diagram of the structure of the track and support frame combination in an embodiment of this disclosure; Figure 4 Embodiments of this disclosure Figure 3 Enlarged structural diagram at point A in the middle; Figure 5 This is a schematic diagram of the support frame according to an embodiment of the present disclosure; Figure 6 This is a cross-sectional view of the support frame according to an embodiment of the present disclosure; Figure 7 Embodiments of this disclosure Figure 6 Enlarged structural diagram at point B; Icons: 1. Drop frame; 2. Track; 3. Mounting plate; 4. Cylinder; 5. Push plate; 6. Support frame; 7. Support plate; 8. Roller; 9. Stop block; 10. Slide bar; 11. First spring; 12. First electromagnet; 13. Baffle; 14. Limiting rod; 15. Nozzle; 16. Pump body; 17. Hose; 18. Filter screen; 19. Connecting block; 20. Suction rod; 21. Second spring; 22. Second electromagnet; 23. Pipe head. Detailed Implementation

[0020] This invention discloses an underground pipeline laying device and method for small-scale excavation to solve the above-mentioned problems.

[0021] To make the technical solutions and advantages of the embodiments of this application clearer, the exemplary embodiments of this application will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not an exhaustive list of all embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0022] Please see Figure 1-7 A small-scale excavation underground pipeline laying device includes: a lowering frame 1, a track 2, a mounting plate 3, a cylinder 4, a push plate 5, and a wear-resistant translation component; The lowering frame 1 is erected on the ground to guide the pipeline to a pair of tracks 2 in conjunction with the lifting equipment. The tracks 2 are symmetrically fixed in the tunnel. The mounting plate 3 is fixedly installed in the tunnel. The cylinder 4 is fixedly connected to one side of the mounting plate 3. The push plate 5 is fixedly connected to the end of the cylinder rod of the cylinder 4. The anti-wear translation component is set on the track 2 and can work with the push plate 5 to make the pipeline move along the track 2 in an anti-wear manner.

[0023] In use, the pipe is lifted by the lifting equipment and lowered onto the anti-wear translation component by the lowering frame 1. The cylinder 4 is activated, and its cylinder rod extends, moving the push plate 5 to push the pipe away from the entrance of the lowering frame 1. Then the cylinder 4 shortens, and the above operation is repeated to push the next matching pipe, so that the pipe connects with the previous pipe and the two pipes are pushed forward together. Subsequently, the above operation is repeated so that multiple pipes can be connected and pushed forward. Finally, multiple pipes can be pushed to the designated position to meet and connect with the area to be laid. The pre-laid pipe adopts the socket tongue and groove prefabricated pipe (common to concrete pipes and large-size steel main pipes). The pipe ends are prefabricated with a double-layer sealing structure. Each pipe is manually pushed and pulled back to achieve connection and sealing, and the pipe laying is completed automatically. Only a small area of ​​excavation is required for construction, which improves work efficiency. Throughout the process, the anti-wear translation components prevent surface wear during pipe movement, thus protecting the pipe.

[0024] In one specific implementation, refer to Figure 1-7 The wear-resistant translation component includes: support frame 6, tray 7, rollers 8, limit component, and flushing component; The support frame 6 is set on the track 2, the tray 7 is fixedly connected to the top of the support frame 6, the rollers 8 are equidistantly rotatable at the bottom of the support frame 6, the rollers 8 are located inside the track 2, the limiting component is set inside the track 2 to limit the position of the support frame 6, and the flushing component is set on the support frame 6 to flush the sand and gravel on the moving path of the rollers 8.

[0025] The pipe is placed on a pair of trays 7, which are arc-shaped and fit the pipe. Then the limiting component is removed from the support frame 6. The support frame 6 can move with the rollers 8 and the pipe, pushing the pipe to move the trays 7, the support frame 6 and the rollers 8. The rollers 8 move along the track 2. Throughout the process, the pipe and the trays 7 remain relatively stationary, so the outside of the pipe is not subject to friction. As the pipe falls along the lowering frame 1, it will slightly collide with the lowering frame 1, causing vibration. The vibration is transmitted to the soil, causing sand and gravel to fall onto the track 2. The roller 8 compacts the sand and gravel, forming a raised area. When the roller 8 moves to the raised area, it will be lifted up, causing the pipe to tilt and affecting the connection. Therefore, by flushing the sand and gravel on the moving path of the roller 8 on the track 2, the roller 8 will not crush the sand and gravel and will not form protrusions, so that the roller 8 can move along the horizontal track 2 and successfully complete the docking.

[0026] In one specific implementation, refer to Figure 3-4 The limiting components include: a stop block 9, a magnetic block, a baffle plate 13, a limiting rod 14, and a storage component; The stop block 9 is slidably installed on the bottom wall of the track 2. The magnetic block is set on the side of the stop block 9 facing the support frame 6. The baffle 13 is fixedly connected to the bottom of the support frame 6 and can attract the magnetic block. The baffle 13 is made of iron. The limiting rod 14 is fixedly connected to the side of the support frame 6 away from the stop block 9. The storage component is set on the track 2 and is used to store the stop block 9 and the magnetic block.

[0027] The stop block 9 and the magnetic block protrude from the bottom wall of the track 2. The magnetic block is attracted and fixed to the baffle 13, which positions the support frame 6. The limiting rod 14 abuts against the support frame 6 behind it, which maintains the distance between adjacent support frames 6. The stop block 9 and the magnetic block are retracted by the storage component. At this time, the pipe is pushed to move the support plate 7 and the support frame 6 in conjunction with the roller 8, so that the pipe leaves the entrance of the drop frame 1. The subsequent adjacent support frames 6 can move naturally. When the support frame 6 is completely removed from the entrance, the storage component is released, and the stop block 9 and the magnetic block are released so that they protrude from the bottom wall of the track 2 to limit the next support frame 6.

[0028] In one specific implementation, refer to Figure 3-4The storage components include: a storage slot, a slide bar 10, a first spring 11, a first electromagnet 12, and a controller (not shown in the figure). The controller is equipped with a wireless transceiver module, and the ground control panel can remotely and uniformly control the operation of all electrical components. The storage slot is located on the bottom wall of the track 2. The slide rod 10 is fixedly connected to the bottom wall of the storage slot. The stop block 9 is slidably installed on the slide rod 10. The first spring 11 is sleeved on the outside of the slide rod 10, and its two ends are fixedly connected to the stop block 9 and the bottom wall of the storage slot, respectively. The first electromagnet 12 is fixedly connected to the bottom wall of the storage slot and can attract the stop block 9 to descend after being energized. The stop block 9 is made of iron. The controller is located on the mounting plate 3.

[0029] The controller controls the first electromagnet 12 to be energized, making it magnetic. This causes the attraction block 9 to descend with the magnetic block away from the baffle 13. At the same time, the block 9 compresses the first spring 11, preventing the block 9 and the magnetic block from protruding from the bottom wall of the track 2. This removes the restriction on the baffle 13 and the support frame 6. Conversely, when the first electromagnet 12 is de-energized, the first spring 11 returns to its original position, causing the block 9 and the magnetic block to return to their original positions. The magnetic block is then attracted and fixed to the baffle 13, thus restricting the support frame 6.

[0030] In one specific implementation, refer to Figure 5-7 The flushing assembly includes: nozzle 15, nozzle, and water supply assembly; The nozzle 15 is fixedly connected to the bottom of the support frame 6. The nozzles are equidistantly arranged on the outside of the nozzle 15 and are set at an angle downward. The water supply component is set on the support frame 6 and can inject groundwater into the nozzle 15.

[0031] The water supply assembly injects groundwater into the nozzle 15, causing it to spray out from the nozzle to wash the sand and gravel on the track 2 and the sand and gravel on the moving path of the roller 8.

[0032] In one specific implementation, refer to Figure 5-7 The water supply components include: pump body 16, hose 17, battery (not shown in the figure), and filter assembly; The pump body 16 is fixedly connected to the support frame 6. One end of the pump body 16 is connected to the nozzle 15. The hose 17 is fixedly connected to the other end of the pump body 16. The battery is installed on the support frame 6 to power the pump body 16. The filter assembly is installed at the bottom of the hose 17 to filter impurities in the groundwater.

[0033] Pump 16 is turned on remotely by the controller. The principle of remote control is existing technology and will not be described in detail here. When pump 16 is turned on, groundwater is pumped in with hose 17 and injected into nozzle 15, and then sprayed out from the nozzle. The filter component can filter impurities in the groundwater to prevent the nozzle from being blocked.

[0034] In one specific implementation, refer to Figure 7 The filter assembly includes: tube head 23, filter screen 18, and vibration assembly; The tube head 23 is fixedly connected to the bottom end of the hose 17, the filter screen 18 is set inside the tube head 23, and the vibration component is set inside the tube head 23, which can make the filter screen 18 vibrate.

[0035] The pipe head 23 is located in the groundwater. The filter screen 18 can filter out impurities in the groundwater. When pumping stops, the vibration component drives the filter screen 18 to vibrate, which can shake off the impurities on the filter screen 18, thus cleaning the filter screen 18 and ensuring its normal use in the future.

[0036] In one specific implementation, refer to Figure 7 The vibration assembly includes: a connecting block 19, a suction rod 20, a second spring 21, and a second electromagnet 22; Connecting blocks 19 are symmetrically and fixedly connected to the outside of filter screen 18, and connecting blocks 19 are slidably installed on the inner wall of pipe head 23; The suction rod 20 is fixedly connected to the top of the connecting block 19. The suction rod 20 is made of iron. The second spring 21 is slidably sleeved on the outside of the suction rod 20. The second electromagnet 22 is fixedly connected to the inside of the tube head 23 and can attract the suction rod 20 after being energized.

[0037] The controller remotely controls the second electromagnet 22 to be energized, making it magnetic. This causes the suction rod 20 to rise along with the connecting block 19 and the filter screen 18, compressing the second spring 21. Then, the controller de-energizes the second electromagnet 22, and the second spring 21 returns to its original position, causing the connecting block 19 and the filter screen 18 to return to their original position as well. The connecting block 19 strikes the inner wall of the tube head 23, generating vibration, which is transmitted to the filter screen 18 to clean the debris on its surface.

[0038] In one specific implementation, refer to Figure 1 The track 2 is provided with a horizontal section and an inclined section, and the support frame 6 can cooperate with the roller 8 to slide down the inclined section to the stop block 9.

[0039] Under the influence of gravity, the support frame 6 can slide down the inclined section along the roller 8.

[0040] Working Principle: During use, the pipe is lifted by the hoisting equipment and lowered onto a pair of support plates 7 by the lowering frame 1. The support plates 7 are arc-shaped and adapted to the pipe. The stop block 9 and the magnetic block protrude from the bottom wall of the track 2. The magnetic block is attracted and fixed to the stop plate 13, thus positioning the support frame 6. The limiting rod 14 abuts against the support frame 6 behind it, maintaining the distance between adjacent support frames 6. The controller controls the first electromagnet 12 to be energized, making it magnetic. This attracts the stop block 9 and the magnetic block to descend away from the stop plate 13. At the same time, the stop block 9 compresses the first spring 11, preventing the stop block 9 and the magnetic block from protruding from the bottom wall of the track 2, thus removing the restriction on the stop plate 13 and the support frame 6. The cylinder 4 is activated, causing its cylinder rod to extend and move the push plate 5 to push the pipe, which in turn moves the support plates 7, the support frame 6, and the rollers 8. The rollers 8 move along the track 2. Throughout the process, the pipe and the support plates 7 remain relatively stationary, so there is no friction on the outside of the pipe, allowing the pipe to leave the lowering frame. At the entrance of frame 1, the adjacent support frame 6 located on the inclined section can move naturally under the action of gravity. When the support frame 6 is completely separated from the entrance, the first electromagnet 12 is de-energized. At this time, the first spring 11 resets, along with the stop block 9 and the magnetic block. The magnetic block is attracted and fixed to the baffle 13, restricting the support frame 6, so that the next support frame 6 can be positioned. The cylinder 4 shortens and resets, repeating the above operation, so that multiple pipes can be connected and pushed forward. Finally, multiple pipes can be pushed to the designated position to contact and combine with the area to be laid. Moreover, the pre-laid pipe adopts the socket tongue and groove type prefabricated pipe (common to concrete pipes and large-size steel main pipes). The pipe mouth is prefabricated with a double-layer sealing structure. Each pipe is manually pushed and pulled back to achieve connection and sealing, and the pipe laying is completed automatically. Only a small area of ​​excavation is required for construction, which improves work efficiency. During the whole process, the outside of the pipe is not worn, and the rolling method reduces the resistance of pipe movement, reduces jamming, and ensures smooth pipe laying. As the pipe falls along the lowering frame 1, it will slightly collide with the lowering frame 1, causing vibration. The vibration is transmitted to the soil, causing sand and gravel to fall onto the track 2. The roller 8 compacts the sand and gravel, forming a raised area. When the roller 8 moves to the raised area, it will be lifted up, causing the pipe to tilt and affecting the connection. Therefore, the pump body 16 is remotely controlled by the controller to start. The remote control principle is existing technology and will not be described in detail here. When the pump body 16 is turned on, it works with the hose 17 to pump groundwater into the nozzle 15 and spray it out from the nozzle to wash the sand and gravel on the moving path of the roller 8 on the track 2. This prevents the roller 8 from crushing the sand and gravel and forming protrusions, allowing the roller 8 to move along the horizontal track 2 and successfully complete the docking. The filter screen 18 can filter impurities in the groundwater. When the next pipe is lifted, the pumping stops, and the controller remotely controls the second electromagnet 22 to be energized, making it magnetic. This causes the suction rod 20 to lift the connecting block 19 and the filter screen 18, compressing the second spring 21. Then, the second electromagnet 22 is de-energized, and the second spring 21 returns to its original position, causing the connecting block 19 and the filter screen 18 to return to their original position. The connecting block 19 hits the inner wall of the pipe head 23, generating vibration, which is transmitted to the filter screen 18 to clean the impurities on its surface. This allows the impurities on the filter screen 18 to be shaken off, thus cleaning the filter screen 18 and ensuring its normal use in the future.

[0041] All other embodiments obtained by those skilled in the art based on the embodiments in this disclosure without inventive effort are within the scope of protection of this disclosure.

[0042] In the description of this disclosure, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0043] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0044] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0045] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A device for laying underground pipelines with small-scale excavation, characterized in that, include: Lowering the landing gear (1), which is erected on the ground; Track (2) is symmetrically installed inside the tunnel; Mounting plate (3) is installed inside the tunnel; Cylinder (4) is connected to one side of the mounting plate (3); Push plate (5) is connected to the end of the cylinder rod of the cylinder (4); The wear-resistant translation component is installed on the track (2) and can cooperate with the push plate (5) to make the pipe move along the track (2) in a wear-resistant manner.

2. The underground pipeline laying device for small-scale excavation according to claim 1, characterized in that, The wear-resistant translation component includes: A support frame (6) is mounted on the track (2); A tray (7) is attached to the top of the support frame (6); Rollers (8) are equidistantly arranged at the bottom of the support frame (6), and the rollers (8) are located inside the track (2); A limiting component is disposed inside the track (2) to limit the position of the support frame (6); A flushing assembly, mounted on the support frame (6), is used to flush sand and gravel along the movement path of the roller (8).

3. The underground pipeline laying device for small-scale excavation according to claim 2, characterized in that, The limiting component includes: The stop block (9) is slidably mounted on the bottom wall of the track (2); A magnetic block is disposed on the side of the stop (9) facing the support frame (6); A baffle (13) is connected to the bottom of the support frame (6) and can be attracted to the magnetic block; A limiting rod (14) is connected to the side of the support frame (6) away from the stop (9); A storage component is provided on the track (2) for storing the stop block (9) and the magnetic block.

4. The underground pipeline laying device for small-scale excavation according to claim 3, characterized in that, The storage component includes: A storage slot is provided on the bottom wall of the track (2); A slide rod (10) is connected to the bottom wall of the storage slot, and the stop block (9) is slidably mounted on the slide rod (10); The first spring (11) is sleeved on the outside of the slide rod (10), and its two ends are respectively connected to the stop block (9) and the bottom wall of the storage groove; The first electromagnet (12) is connected to the bottom wall of the storage slot and can attract the stop (9) to descend after being energized; The controller is mounted on the mounting plate (3).

5. The underground pipeline laying device for small-scale excavation according to claim 4, characterized in that, The flushing assembly includes: The nozzle (15) is connected to the bottom of the support frame (6); The nozzles are equidistantly arranged on the outside of the nozzle (15); The water supply assembly, mounted on the support frame (6), is capable of injecting groundwater into the nozzle (15).

6. The underground pipeline laying device for small-scale excavation according to claim 5, characterized in that, The water supply components include: Pump body (16) is connected to the support frame (6), and one end of the pump body (16) is connected to the nozzle (15); A hose (17) is connected to the other end of the pump body (16); A storage battery, mounted on the support frame (6), supplies power to the pump body (16); A filter assembly, located at the bottom of the hose (17), is used to filter impurities in the groundwater.

7. The underground pipeline laying device for small-scale excavation according to claim 6, characterized in that, The filtering component includes: The tube head (23) is connected to the bottom end of the hose (17); A filter screen (18) is disposed inside the tube head (23); A vibration assembly, located inside the tube head (23), is capable of causing the filter screen (18) to vibrate.

8. The underground pipeline laying device for small-scale excavation according to claim 7, characterized in that, The vibration component includes: Connecting blocks (19) are symmetrically connected to the outside of the filter screen (18), and the connecting blocks (19) are slidably installed on the inner wall of the tube head (23); The suction rod (20) is connected to the top of the connecting block (19); The second spring (21) is sleeved on the outside of the suction rod (20); The second electromagnet (22) is connected inside the tube head (23) and can attract the suction rod (20) when energized.

9. The underground pipeline laying device for small-scale excavation according to claim 8, characterized in that, The track (2) is provided with a horizontal section and an inclined section, and the support frame (6) can cooperate with the roller (8) to slide down along the inclined section to the stop (9).

10. A method for laying underground pipelines using the small-scale excavation underground pipeline laying device as described in claim 9, characterized in that, Includes the following steps: S1. When in use, the pipe is lifted by the lifting equipment and lowered by the lowering frame (1) so that the pipe falls on the wear-resistant translation component; S2. By starting the cylinder (4), the cylinder rod extends and moves the push plate (5) to push the pipe, so that the pipe leaves the entrance of the lower frame (1). Then the cylinder (4) shortens and repeats the above operation to push the next matching pipe, so that the pipe connects with the previous pipe and pushes the two pipes forward together. S3. Subsequently, repeat the above operations to connect and advance multiple pipes. Finally, push multiple pipes to the designated position to meet and connect with the area to be laid. The pre-laid pipes are prefabricated with socket joints and tongue and groove joints. The pipe ends are prefabricated with a double-layer sealing structure. Each pipe is manually pushed and pulled back to achieve connection and sealing, thus completing the pipe laying.

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