Pipe jacking construction device of municipal pipeline and construction method of pipe jacking construction device

Abstract

The invention relates to the technical field of pipe jacking construction, in particular to a pipe jacking construction device for municipal pipelines and a construction method of the pipe jacking construction device. The pipe jacking construction device comprises a propelling mechanism and a jacking mechanism, the jacking mechanism comprises a jacking pipe body, a plurality of shovel plates which are slidably connected with one another are slidably connected to the jacking pipe body along the periphery of the jacking pipe body, a driving assembly for driving the shovel plates to slide is installed in the jacking pipe body, and the position, close to the front end of the jacking pipe body, in the jacking pipe body is rotationally connected with a collecting hopper; and the collecting hopper is in transmission connection with the driving assembly, a crushing assembly communicating with the collecting hopper is arranged in the jacking pipe body, the crushing assembly is connected with a discharging assembly, and a washing assembly connected with the shovel plate is installed in the jacking pipe body. By adopting the mode of combining the shovel plate and high-pressure water flow scouring, the device can be inserted into clayed soil more conveniently and efficiently, can effectively adapt to the clayed soil body in the pipe jacking construction process, and is beneficial to improving the working efficiency of pipe jacking construction.

Description

Technical Field

[0001] The invention relates to the technical field of pipe jacking construction, and in particular to a pipe jacking construction device for a municipal pipeline and a construction method thereof. Background Art

[0002] In municipal engineering construction, pipeline laying is an important infrastructure construction work. Traditional pipeline laying methods usually require large-scale excavation, which not only has a great impact on the surrounding traffic, environment and residents' lives, but also has a long construction period and high costs. Pipe jacking construction technology, as a trenchless construction method, has been widely used in recent years.

[0003] At present, the existing pipe jacking construction equipment usually adopts a rotating cutter disc to drive a scraper, cuts the soil during the jacking process, and then discharges the cut soil through subsequent equipment; during the construction process, the adaptability to soil with high viscosity is poor, and the soil is easy to stick to the cutter disc or scraper, causing blockage, seriously hindering the construction progress and reducing construction efficiency.

[0004] Therefore, it is of great practical significance to develop a pipe jacking construction device and a construction method thereof that can adapt to clay soil and improve construction efficiency. Summary of the invention

[0005] In order to adapt to clay soil and improve construction efficiency during pipe jacking construction, the present application provides a pipe jacking construction device for a municipal pipeline and a construction method thereof.

[0006] The present application provides a municipal pipeline jacking construction device and a construction method thereof, which adopts the following technical solutions: First aspect A jacking construction device for a municipal pipeline comprises a propulsion mechanism and a jacking mechanism, wherein the propulsion mechanism is used to push a prefabricated pipeline and the jacking mechanism, and the jacking mechanism is used to break the soil and guide the advancement of the prefabricated pipeline; the jacking mechanism comprises a jacking pipe body, and the jacking pipe body is slidably connected with a plurality of shovel plates slidably connected to each other along its outer periphery, and a driving assembly for driving the shovel plates to slide is installed inside the jacking pipe body, and the interior of the jacking pipe body is rotatably connected to a collecting bucket near its front end, and the collecting bucket is transmission-connected to the driving assembly, and a crushing assembly connected to the collecting bucket is provided inside the jacking pipe body, and the crushing assembly is connected to a discharge assembly, and a flushing assembly connected to the shovel plate is installed inside the jacking pipe body.

[0007] Furthermore, the propulsion mechanism includes a rear backrest fixedly installed inside the working well, a propulsion cylinder is fixedly installed on the rear backrest, a telescopic end of the propulsion cylinder is connected to a top iron, and an avoidance hole is opened in the middle of the top iron.

[0008] Further, the driving assembly includes a number of jacking cylinders distributed in central symmetry. The jacking cylinders are fixedly installed inside the jacking pipe body. A motor bracket is fixedly installed on the outer side of the telescopic end of the jacking cylinder. A plurality of turntable motors evenly distributed in a ring are fixedly installed on the motor bracket. The telescopic end of the jacking cylinder is slidably connected with a jacking disc. Driving blocks are fixedly installed on the jacking disc corresponding to the shovel plates. Driving seats are fixedly installed on the shovel plates corresponding to the driving blocks. A toothed disc is fixedly installed on the jacking disc. A driving gear is fixedly installed on the output shaft of the turntable motor. The driving gear meshes with the toothed disc.

[0009] Further, the jacking disc is sleeved on the collecting hopper. A number of guide strips evenly distributed in a ring are fixedly connected to the inner side surface of the collecting hopper close to the front end of the jacking pipe body. Spline grooves evenly distributed in a ring are formed in the outer surface of the collecting hopper corresponding to the jacking disc. Spline teeth are formed in the inner side surface of the jacking disc corresponding to the spline grooves. The spline teeth are in sliding meshing transmission with the spline grooves.

[0010] Further, a conveying piece is fixedly connected to the inner side wall of the collecting hopper far from the front end of the jacking pipe body. The conveying piece is arranged in a spiral shape.

[0011] Further, the crushing assembly includes a crushing box fixedly connected inside the jacking pipe body. One end of the crushing box is hermetically and rotatably connected with the collecting hopper. The other end of the crushing box is fixedly and hermetically connected with a cover plate. The cover plate is hermetically communicated with the discharging assembly. A first mounting shaft and a second mounting shaft penetrating through its side wall are rotatably connected inside the crushing box. Crushing rollers are fixedly installed on the first mounting shaft and the second mounting shaft inside the crushing box. Driving gears meshing with each other are fixedly installed at one ends of the first mounting shaft and the second mounting shaft outside the crushing box. One end of the first mounting shaft outside the crushing box and far from the driving gear is in transmission connection with a crushing motor. The crushing motor is fixedly installed on the crushing box.

[0012] Further, the discharging assembly includes a booster pump. The booster pump is fixedly connected to the output end of the crushing assembly. The output end of the booster pump is fixedly connected with a number of output pipes connected end to end in sequence. The outermost output pipe is connected with an external sludge collecting device.

[0013] Further, the flushing assembly includes a water pump. The input end of the water pump is fixedly connected with several input pipes connected end to end in sequence. The output end of the water pump is fixedly connected with a high-pressure water pipe. A water distribution pipe is fixedly connected to the high-pressure water pipe. Electric control valves are connected to the water distribution pipe corresponding to each of the shovel plates. A liquid flow channel is formed inside the shovel plate. The liquid flow channel is hermetically connected to the output end of the electric control valve through a high-pressure hose. A plurality of groups of evenly distributed flushing holes are formed on the inner side surface of the shovel plate along its sliding direction. The flushing holes are hermetically communicated with the liquid flow channel.

[0014] In a second aspect A pipe jacking construction method for municipal pipelines, using the pipe jacking construction device of the first aspect, includes the following steps: S1. Construction preparation: S11. Excavate and pour the working well and the receiving well to ensure that the dimensions, verticality and wall strength of the well meet the standards; S12. Transport the components of the pipe jacking construction device to the construction site, and assemble and debug the equipment in the working well; S2. Pipe jacking construction: S21. Lift the precast pipe into the working well, make the precast pipe abut between the propulsion mechanism and the jacking mechanism, and pass the parts of the discharge assembly and the flushing assembly connected to the outside through the precast pipe; S22. Start the propulsion mechanism and the jacking mechanism. The jacking mechanism shovels into the soil body. The soil body shoveled by the jacking mechanism is flushed by the flushing assembly and then enters the crushing assembly through the collecting hopper. The crushing assembly crushes the stones and soil blocks in the soil body to form slurry. The discharge assembly transports the crushed slurry in the crushing assembly to the collecting device on the ground; S22. When one section of the precast pipe is jacked in place, stop the propulsion and repeat steps S21 to S22; S3. Construction completion and acceptance: After the jacking mechanism enters the receiving well, stop the operation of the equipment and conduct a comprehensive inspection of all the precast pipes.

[0015] Further, in step S2, before installing another section of the precast pipe after one section of the precast pipe is jacked in place, an adapter sleeve is installed between the adjacent two sections of the precast pipes.

[0016] The beneficial effects achieved: The present application can be inserted into cohesive soil more conveniently and efficiently by combining a scraper plate with high-pressure water flow scouring. The high-pressure water flow of the scouring component scours the soil mass, which can not only quickly and effectively break the soil mass, but also effectively avoid adhesion and blockage between the cohesive soil and the scraper plate and the collection hopper. Even when blocked by stones, it can avoid them by pushing the stones to slide in the soil, and can effectively adapt to cohesive soil during the pipe jacking construction process, which is beneficial to improving the working efficiency of pipe jacking construction. Description of the Drawings

[0017] Figure 1 is the overall structural schematic diagram of an embodiment of the present application.

[0018] Figure 2 is the structural decomposition schematic diagram of an embodiment of the present application.

[0019] Figure 3 is the internal structural schematic diagram of an embodiment of the present application.

[0020] Figure 4 is the structural decomposition schematic diagram of the driving component in an embodiment of the present application.

[0021] Figure 5 is the structural decomposition schematic diagram of the crushing component in an embodiment of the present application.

[0022] Figure 6 is the structural decomposition schematic diagram of the scouring component in an embodiment of the present application.

[0023] Figure 7 is Figure 3 the enlarged schematic diagram of the structure of Part Ⅰ in

[0024] Figure 8 is Figure 3 the enlarged schematic diagram of the structure of Part Ⅱ in

[0025] Description of the reference numerals: 100, propulsion mechanism; 101, backrest; 102, propulsion oil cylinder; 103, top iron; 104, avoidance hole; 200, jacking mechanism; 201, jacking pipe body; 202, shovel plate; 203, collecting hopper; 204, guiding strip; 205, spline groove; 206, conveying sheet; 300, drive assembly; 301, jacking oil cylinder; 302, motor bracket; 303, turntable motor; 304, jacking disc; 305, drive block; 306, drive seat; 307, gear disc; 308, driving gear; 309, spline tooth; 400, crushing assembly; 401, crushing box; 402, cover plate; 403, first mounting shaft; 404, second mounting shaft; 405, crushing roller; 406, transmission gear; 407, crushing motor; 500, discharging assembly; 501, booster pump; 502, output pipe; 600, flushing assembly; 601, water pump; 602, input pipe; 603, high-pressure water pipe; 604, water distribution pipe; 605, electric control valve; 606, liquid flow channel; 607, high-pressure hose; 608, flushing hole; 700, receiving well; 800, working well; 900, precast pipe; 901, connection sleeve; 902, connection groove; 903, grouting hole; 904, grouting channel; 905, inclined surface; 906, grouting hole; 907, protective cover. Detailed implementation manners

[0026] The following further describes the present application in detail with reference to the Figure 1-8 accompanying drawings.

[0027] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0028] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0029] The embodiment of the present application discloses a pipe jacking construction device for municipal pipelines and its construction method.

[0030] The invention technology is summarized and designed by the general contracting project of the reconstruction and renovation of the Luojia Lake Pumping Station and the first phase of the Taozi Lake Pollution Control Project (the main project of the pumping station, the southern area and the northern area of ​​the supporting pipe network project). During the construction of the reconstruction and renovation of the Luojia Lake Pumping Station and the first phase of the Taozi Lake Pollution Control Project, the soil structure is mostly sticky soil with high humidity, and there are stones mixed in the sticky soil. When using traditional pipe jacking technology for construction, the sticky soil is very easy to stick to the cutter disc and scraper of the pipe jacking machine, and the stones mixed in the sticky soil will slip when facing the scraper of the pipe jacking machine, making it difficult to effectively break them, which seriously restricts the construction efficiency of the pipe jacking construction. For this reason, a municipal pipeline jacking construction device and a construction method disclosed in this application are proposed, aiming to improve the regional drainage capacity, realize rainwater and sewage diversion, purify the water quality of Taozi Lake, and create a good urban ecological environment.

[0031] Example 1 Please refer to the Figures 1 to 7 This embodiment discloses a pipe jacking construction device for a municipal pipeline, including a propulsion mechanism 100 and a jacking mechanism 200. The propulsion mechanism 100 is used to push the prefabricated pipeline 900 and the jacking mechanism 200. The jacking mechanism 200 is used to break the soil and guide the advancement of the prefabricated pipeline 900. The propulsion mechanism 100 includes a rear backrest 101 fixedly installed inside the working well 800, and a propulsion cylinder 102 is fixedly installed on the rear backrest 101. The telescopic end of the propulsion cylinder 102 is connected to a jacking iron 103. The middle part of the jacking iron 103 is provided with an avoidance hole 104, and the discharge assembly 500 and the flushing assembly 600 can pass through the avoidance hole 104. The jacking mechanism 200 includes a jacking tube body 201, on which a plurality of shovel plates 202 slidably connected to each other are slidably connected along the outer circumference thereof, a driving assembly 300 for driving the shovel plates 202 to slide is installed inside the jacking tube body 201, the interior of the jacking tube body 201 is rotatably connected to a collecting bucket 203 near its front end, the collecting bucket 203 is transmission-connected to the driving assembly 300, a crushing assembly 400 connected to the collecting bucket 203 is provided inside the jacking tube body 201, the crushing assembly 400 is connected to a discharge assembly 500, and a flushing assembly 600 connected to the shovel plates 202 is installed inside the jacking tube body 201.

[0032] The implementation principle of a pipe jacking construction device for a municipal pipeline in the embodiment of the present application is as follows: After the propulsion oil cylinder 102 is started, its telescopic end extends to push the ejector 103 forward. The ejector 103 then pushes the precast pipeline 900 and the jacking mechanism 200 as a whole forward, so that the jacking mechanism 200 presses against the soil under a certain pressure. At this time, the driving assembly 300 drives the shovel plate 202 to slide along the outer periphery of the jacking pipe body 201 successively, and the shovel plates 202 on the outer periphery of the jacking pipe body 201 are successively shoveled into the soil. During the process of the shovel plates 202 being successively shoveled into the soil, the flushing assembly 600 will spray the water flow with pressure from the shovel plates 202, thereby flushing the soil, and the flushed soil will enter the collecting hopper 203. When collecting the flushed soil, driving the collecting hopper 203 to rotate through the driving assembly 300 can better collect the soil, so that the soil enters the crushing assembly 400. The crushing assembly 400 further crushes the soil into smaller particles and discharges it through the discharging assembly 500 along with the water flow.

[0033] The method adopted in this application combines the shovel plate 202 with high-pressure water flow flushing, which can be inserted into cohesive soil more conveniently and efficiently. The high-pressure water flow of the flushing assembly 600 flushes the soil, which can not only quickly and effectively break the soil, but also effectively avoid adhesion and blockage between the cohesive soil and the shovel plate 202 and the collecting hopper 203. Even when blocked by stones, it can avoid by pushing the stones to slide in the soil, which can effectively adapt to the cohesive soil during the pipe jacking construction process and is beneficial to improving the working efficiency of the pipe jacking construction.

[0034] Please refer to Figures 1 to 7 In an embodiment of the present application, the driving assembly 300 includes a number of jacking oil cylinders 301 distributed centrosymmetrically. The jacking oil cylinders 301 are fixedly installed inside the jacking pipe body 201. A motor bracket 302 is fixedly installed on the outer side of the telescopic end of the jacking oil cylinder 301. A plurality of annularly distributed turntable motors 303 are fixedly installed on the motor bracket 302. The end of the telescopic end of the jacking oil cylinder 301 is slidably connected with a jacking plate 304. A driving block 305 is fixedly installed on the jacking plate 304 corresponding to the shovel plate 202. A driving seat 306 is fixedly installed on the shovel plate 202 corresponding to the driving block 305. A gear disk 307 is fixedly installed on the jacking plate 304. A driving gear 308 is fixedly installed on the output shaft of the turntable motor 303. The driving gear 308 meshes with the gear disk 307.

[0035] During the working process, when it is necessary to drive the shovel plate 202 to break the soil body, first start the rotary table motor 303 installed on the motor support 302. The output shaft of the rotary table motor 303 drives the driving gear 308 to rotate. The driving gear 308 meshes with the tooth disc 307 fixed on the jacking disc 304, thereby driving the tooth disc 307 to rotate. The tooth disc 307 drives the jacking disc 304 to rotate, so that the driving block 305 installed on the jacking disc 304 is aligned with the driving seat 306 on the corresponding shovel plate 202. Then start the jacking oil cylinder 301, and the telescopic end of the jacking oil cylinder 301 extends, pushing the motor support 302, the jacking disc 304 and the driving block 305 installed on the jacking disc 304 to move forward. The driving block 305 cooperates with the driving seat 306 on the shovel plate 202, thereby driving the shovel plate 202 to slide forward along the outer circumference of the jacking pipe body 201, realizing the breaking of the soil body.

[0036] And by controlling the insertion sequence and the insertion depth of the shovel plate 202, the direction of the overall entry of the jacking pipe body 201 into the soil body can be finely adjusted. For example: shoveling into the same depth in a symmetric manner can make the jacking pipe body 201 enter the soil body in a straight-ahead direction. If it is necessary to control the jacking pipe body 201 to deflect in a certain direction, only need to control the shovel plate 202 in the target direction to shovel into a greater depth first, and control the shovel plate 202 opposite to the target direction to shovel in later and with a shallower depth, so that the overall jacking pipe body 201 gradually deflects in the target direction. In this way, by cooperating with the existing positioning technology, it can be ensured that the jacking mechanism 200 accurately guides the precast pipe 900 into the receiving well 700.

[0037] Please refer to Figures 1 to 7 , in an implementation manner of the present application, the jacking disc 304 is sleeved on the collecting hopper 203. A plurality of annularly and evenly distributed guide strips 204 are fixedly connected to the inner side surface of the collecting hopper 203 close to the front end of the jacking pipe body 201. The outer surface of the collecting hopper 203 is provided with annularly and evenly distributed spline grooves 205 corresponding to the jacking disc 304. The inner side surface of the jacking disc 304 is provided with spline teeth 309 corresponding to the spline grooves 205. The spline teeth 309 are in sliding meshing transmission with the spline grooves 205.

[0038] During the working process, when the jacking oil cylinder 301 pushes the jacking disc 304 to move forward, the spline teeth 309 on the inner side of the jacking disc 304 slide along the spline grooves 205 on the outer surface of the collecting hopper 203. Due to the sliding meshing of the spline teeth 309 and the spline grooves 205, when the jacking disc 304 advances forward, it will not drive the collecting hopper 203 to rotate around its own axis.

[0039] After all the scraper plates are inserted into the soil, when it is necessary to enhance the effect of collecting soil by rotating the collecting hopper 203, the jacking cylinder 301 is contracted to the initial position, and then the turntable motor 303 is controlled to drive the gear disk 307 to rotate through the driving gear 308, thereby driving the jacking disk 304 to rotate. The rotation of the jacking disk 304 can drive the collecting hopper 203 to continuously rotate rapidly through the transmission of the spline teeth 309 and the spline groove 205, so as to enhance the collecting effect.

[0040] Please refer to Figures 1 to 7 , in an embodiment of the present application, a conveying piece 206 is fixedly connected to the inner side wall of the collecting hopper 203 away from the front end of the jacking pipe body 201, and the conveying piece 206 is arranged in a spiral shape. When the collecting hopper 203 rotates driven by the driving assembly 300, the spiral-shaped conveying piece 206 fixedly connected to the inner side wall of the collecting hopper 203 away from the front end of the jacking pipe body 201 rotates synchronously. The viscous soil containing stones collected in the collecting hopper 203 is subjected to a component force along the spiral direction under the action of the conveying piece 206. This component force drives the soil and stones to move along the inner wall of the collecting hopper from the open end of the collecting hopper to the end opposite to the front end of the jacking pipe body 201, and then conveys the material to the crushing assembly 400 communicated with the collecting hopper 203 for subsequent crushing and discharging operations.

[0041] Please refer to Figures 1 to 7 , in an embodiment of the present application, the crushing assembly 400 includes a crushing box 401 fixedly connected inside the jacking pipe body 201. One end of the crushing box 401 is hermetically and rotatably connected to the collecting hopper 203, and the other end of the crushing box 401 is fixedly and hermetically connected to a cover plate 402. The cover plate 402 is hermetically communicated with the discharging assembly 500. Inside the crushing box 401, a first mounting shaft 403 and a second mounting shaft 404 penetrating through its side wall are rotatably connected. Crushing rollers 405 are fixedly installed on the first mounting shaft 403 and the second mounting shaft 404 inside the crushing box 401. Transmission gears 406 that mesh with each other are fixedly installed at one ends of the first mounting shaft 403 and the second mounting shaft 404 outside the crushing box 401. One end of the first mounting shaft 403 outside the crushing box 401 and away from the transmission gear 406 is drivingly connected to a crushing motor 407, and the crushing motor 407 is fixedly installed on the crushing box 401.

[0042] During the rotation of the collecting hopper 203, the viscous soil containing stones is conveyed into the crushing box 401 which is in sealed rotational connection with it through the spiral conveying piece 206. Start the crushing motor 407, and its output shaft drives the first mounting shaft 403 to rotate. The transmission gear 406 on the first mounting shaft 403 meshes with the transmission gear 406 on the second mounting shaft 404, so that the second mounting shaft 404 rotates in the opposite direction following the first mounting shaft 403. Crushing rollers 405 are fixedly installed on both the first mounting shaft 403 and the second mounting shaft 404, and the opposite rotation of the two shafts drives the crushing rollers 405 to rotate relatively. The materials entering the crushing box 401 are subjected to forces such as extrusion, shearing, and rubbing between the relatively rotating crushing rollers 405. The stones are broken into small pieces, and the viscous soil is further refined. After being crushed, the materials enter the discharge assembly 500 which is fixedly and sealedly connected to the other end of the crushing box 401 through the cover plate 402, and then are discharged.

[0043] Please refer to Figures 1 to 7 , in an embodiment of the present application, the discharge assembly 500 includes a booster pump 501. The booster pump 501 is fixedly connected to the output end of the crushing assembly 400. The output end of the booster pump 501 is fixedly connected with a number of output pipes 502 connected end to end in sequence. The outermost output pipe 502 is connected to an external silt collection device.

[0044] During the working process, the materials after being crushed by the crushing assembly 400, including the crushed stone particles and the refined viscous soil, will enter the connected booster pump 501 along with the water flow. After the booster pump 501 is started, it applies pressure to the materials entering it, increases the kinetic energy and pressure energy of the materials, so that they can overcome the resistance during pipeline transportation. Under the action of the booster pump, the materials enter the output pipe 502 with a higher pressure and speed. Since the output pipe is composed of a number of sections connected end to end in sequence, the materials pass through each section of the output pipe 502 in turn, and finally are conveyed from the outermost output pipe 502 to the external silt collection device to complete the discharge operation of the materials.

[0045] Please refer to Figures 1 to 7 , in an embodiment of the present application, the flushing assembly 600 includes a water pump 601. The input end of the water pump 601 is fixedly connected with a number of input pipes 602 connected end to end in sequence. The output end of the water pump 601 is fixedly connected with a high-pressure water pipe 603. A water distribution pipe 604 is fixedly connected to the high-pressure water pipe 603. Electric control valves 605 are connected to the water distribution pipe 604 corresponding to each shovel plate 202. A liquid flow channel 606 is opened inside the shovel plate 202. The liquid flow channel 606 is hermetically connected to the output end of the electric control valve 605 through a high-pressure hose 607. A number of groups of evenly distributed flushing holes 608 are opened on the inner side surface of the shovel plate 202 along its sliding direction. The flushing holes 608 are hermetically connected to the liquid flow channel 606.

[0046] During the working process, starting the water pump 601 can pump water from an external water source through the input pipe 602 connected end to end in sequence. Under the action of the water pump 601, the pressure of the pumped water is greatly increased and is transported to the water distribution pipe 604 through the high-pressure water pipe 603. The water distribution pipe 604 distributes the high-pressure water to the electric control valves 605 corresponding to each shovel plate 202. When the shovel plate 202 shovels into the soil body, the corresponding electric control valve 605 is controlled to open, and the high-pressure water enters the liquid flow channel 606 inside the shovel plate 202 through the high-pressure hose 607. The high-pressure water flow in the liquid flow channel 606 sprays out at high speed through the flushing holes 608 on the inner side of the shovel plate 202, flushes the soil and stones on the inner side of the shovel plate 202, and the formed water flow after flushing can also drive the flushed soil and stones to effectively enter the collection hopper 203.

[0047] Embodiment 2 Please refer to Figures 1 to 8 , this embodiment discloses a pipe jacking construction method for municipal pipelines. Using the pipe jacking construction device in Embodiment 1, it includes the following steps: S1. Construction preparation: S11. Excavate and pour the working well 800 and the receiving well 700 to ensure that the dimensions, verticality, and well wall strength meet the standards; S12. Transport each component of the pipe jacking construction device to the construction site, and assemble and debug the equipment in the working well 800; S2. Pipe jacking construction: S21. Hoist the precast pipe 900 into the working well 800, make the precast pipe 900 abut between the propulsion mechanism 100 and the jacking mechanism 200, and pass the parts of the discharge assembly 500 and the flushing assembly 600 connected to the outside through the precast pipe 900; S22. Start the propulsion mechanism 100 and the jacking mechanism 200. The jacking mechanism 200 shovels into the soil body. The soil shoveled by the jacking mechanism 200 enters the crushing assembly 400 through the collection hopper 203 after being flushed by the flushing assembly 600. The crushing assembly 400 crushes the stones and soil blocks in the soil body to form slurry, and the discharge assembly 500 transports the crushed slurry in the crushing assembly 400 to the collection device on the ground; S22. When a section of the precast pipe 900 is jacked in place, stop the propulsion and repeat steps S21 to S22; S3. Construction completion and acceptance: Stop the equipment operation after the jacking mechanism 200 enters the receiving well, and conduct a comprehensive inspection of all the precast pipes 900.

[0048] The work in each stage of this construction method is closely connected. From construction preparation to pipe jacking construction and then to acceptance, the process is clear and reasonable. During the pipe jacking construction, with the mutual cooperation of the propulsion mechanism and the jacking mechanism, the scouring component and the shovel plate can quickly break through the soil body, ensuring efficient jacking construction; the crushing component can quickly crush the stones in the soil body, and the discharging component can timely discharge the slurry, reducing the construction stagnation time and shortening the overall construction period.

[0049] Please refer to Figures 1 to 8 , in a specific embodiment of the present application, in step S2, after a section of precast pipe 900 is jacked in place and before installing another section of precast pipe 900, a connecting sleeve 901 is installed between two adjacent sections of precast pipes 900. Symmetrically arranged connecting grooves 902 are opened at both ends of the connecting sleeve 901 corresponding to the ends of the precast pipes 900.

[0050] During the working process, after a section of precast pipe 900 is jacked in place and before installing the next section of precast pipe 900, the connecting sleeve 901 is installed between two adjacent sections of precast pipes 900. The connecting grooves 902 at both ends of the connecting sleeve 901 are closely matched with the ends of the precast pipes 900, playing a role of positioning and connection, and can effectively improve the stability of the precast pipes 900 during the jacking process.

[0051] Please refer to Figures 1 to 8 , in a specific embodiment of the present application, a grouting hole 903 is opened on the side wall of the connecting sleeve 901 located inside the precast pipe 900. A grouting channel 904 communicating with the grouting hole 903 is opened along the circumferential direction of the inside of the connecting sleeve 901. The side wall of the connecting sleeve 901 located outside the precast pipe 900 is set as an inclined surface 905. A plurality of spray holes 906 penetrating the inclined surface 905 are annularly and evenly arranged on the connecting sleeve 901. The spray holes 906 are communicated with the grouting channel 904. A protective cover 907 covering the inclined surface 905 is installed at the position of the connecting sleeve 901 located outside the precast pipe 900.

[0052] Before the construction is completed and before acceptance, the grouting equipment is connected to the grouting hole 903 of the connecting sleeve 901, and slurry is injected into the grouting channel 904. Since the grouting channel 904 is communicated with the spray holes 906 and the grouting holes 903, under the action of pressure, the slurry sprays out through the spray holes 906. The sprayed slurry will push open the protective cover 907 and spray onto the outer surface of the precast pipe 900, playing a role of reinforcing and filling the soil body, reducing the voids of the soil body around the pipe, and being beneficial to improving the supporting force of the soil body on the pipe.

[0053] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited hereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A pipe jacking construction device for a municipal pipeline, characterized in that: The invention comprises a propulsion mechanism (100) and a jacking mechanism (200), wherein the propulsion mechanism (100) is used to propel a prefabricated pipe (900) and the jacking mechanism (200), and the jacking mechanism (200) is used to break the soil and guide the propulsion of the prefabricated pipe (900); the jacking mechanism (200) comprises a jacking pipe body (201), a plurality of shovel plates (202) slidably connected to each other along the outer circumference of the jacking pipe body (201), and a shovel plate (202) is installed inside the jacking pipe body (201) to drive the shovel plates (202) ) a driving assembly (300) that slides, the interior of the jacking tube (201) is rotatably connected to a collecting bucket (203) near its front end, the collecting bucket (203) is drivingly connected to the driving assembly (300), the interior of the jacking tube (201) is provided with a crushing assembly (400) that is in communication with the collecting bucket (203), the crushing assembly (400) is connected to a discharge assembly (500), and the interior of the jacking tube (201) is provided with a flushing assembly (600) that is connected to the shovel plate (202).

2. A municipal pipeline jacking construction device according to claim 1, characterized in that: The propulsion mechanism (100) comprises a rear backrest (101) fixedly mounted inside the working well (800), a propulsion cylinder (102) fixedly mounted on the rear backrest (101), a top iron (103) connected to the telescopic end of the propulsion cylinder (102), and a avoidance hole (104) formed in the middle of the top iron (103).

3. A pipe jacking construction device for a municipal pipeline according to claim 1, characterized in that: The driving assembly (300) comprises a plurality of jacking cylinders (301) distributed in a centrally symmetrical manner. The jacking cylinders (301) are fixedly mounted inside the jacking tube body (201). A motor bracket (302) is fixedly mounted on the outer side of the telescopic end of the jacking cylinder (301). A plurality of evenly distributed turntable motors (303) are fixedly mounted on the motor bracket (302). A jacking disk (304) is slidably connected to the end of the telescopic end of the jacking cylinder (301). A driving block (305) is fixedly mounted on the jacking disk (304) corresponding to the shovel plate (202). A driving seat (306) is fixedly mounted on the shovel plate (202) corresponding to the driving block (305). A toothed disk (307) is fixedly mounted on the jacking disk (304). A driving gear (308) is fixedly mounted on the output shaft of the turntable motor (303). The driving gear (308) meshes with the toothed disk (307).

4. A pipe jacking construction device for a municipal pipeline according to claim 3, characterized in that: The jacking disc (304) is mounted on the collecting bucket (203); a plurality of annularly evenly distributed guide strips (204) are fixedly connected to the inner side surface of the collecting bucket (203) near the front end of the jacking tube body (201); annularly evenly distributed spline grooves (205) are formed on the outer surface of the collecting bucket (203) corresponding to the jacking disc (304); spline teeth (309) are formed on the inner side surface of the jacking disc (304) corresponding to the spline grooves (205); the spline teeth (309) are slidably meshed with the spline grooves (205) for transmission.

5. A pipe jacking construction device for a municipal pipeline according to claim 3, characterized in that: A conveying sheet (206) is fixedly connected to the inner side wall of the collecting bucket (203) away from the front end of the jacking tube body (201), and the conveying sheet (206) is arranged in a spiral shape.

6. A pipe jacking construction device for a municipal pipeline according to claim 1, characterized in that: The crushing assembly (400) comprises a crushing box (401) fixedly connected to the inside of the jacking tube body (201); one end of the crushing box (401) is sealingly rotatably connected to the collecting bucket (203); the other end of the crushing box (401) is fixedly sealedly connected to a cover plate (402); the cover plate (402) is sealingly connected to the discharge assembly (500); the crushing box (401) is internally rotatably connected to a first mounting shaft (403) and a second mounting shaft (404) that penetrate through a side wall thereof; the first mounting shaft (403) and the second mounting shaft (404) are Crushing rollers (405) are fixedly mounted on the two mounting shafts (404) located inside the crushing box (401); mutually meshing transmission gears (406) are fixedly mounted on one end of the first mounting shaft (403) and the second mounting shaft (404) located outside the crushing box (401); a crushing motor (407) is drivingly connected to one end of the first mounting shaft (403) located outside the crushing box (401) and away from the transmission gear (406); and the crushing motor (407) is fixedly mounted on the crushing box (401).

7. A pipe jacking construction device for a municipal pipeline according to claim 1, characterized in that: The discharge assembly (500) comprises a booster pump (501), the booster pump (501) being fixedly connected to the output end of the crushing assembly (400), the output end of the booster pump (501) being fixedly connected to a plurality of output pipes (502) connected end to end in sequence, the output pipe (502) at the outermost end being connected to an external sludge collection device.

8. A pipe jacking construction device for a municipal pipeline according to claim 1, characterized in that: The flushing assembly (600) comprises a water pump (601), the input end of the water pump (601) being fixedly connected to a plurality of input pipes (602) connected end to end in sequence, the output end of the water pump (601) being fixedly connected to a high-pressure water pipe (603), the high-pressure water pipe (603) being fixedly connected to a water distribution pipe (604), the water distribution pipe (604) being connected to an electric control valve (605) corresponding to each of the shovel plates (202), a liquid flow channel (606) being provided inside the shovel plates (202), the liquid flow channel (606) being sealedly connected to the output end of the electric control valve (605) via a high-pressure hose (607), the inner side surface of the shovel plates (202) being provided with a plurality of groups of flushing holes (608) evenly and densely distributed along the sliding direction thereof, the flushing holes (608) being sealedly connected to the liquid flow channel (606).

9. A method for pipe jacking construction of a municipal pipeline, characterized in that: The pipe jacking construction device according to any one of claims 1 to 8 comprises the following steps: S1. Construction preparation: S11. Excavate and cast the working well (800) and the receiving well (700) to ensure that the size, verticality and well wall strength meet the standards; S12. Transport the components of the pipe jacking construction device to the construction site, assemble and debug the equipment in the working well (800); S2. Pipe jacking construction: S21. The prefabricated pipe 900 is hoisted into the working well (800), so that the prefabricated pipe (900) abuts between the propulsion mechanism (100) and the jacking mechanism (200), and the parts of the discharge assembly (500) and the flushing assembly (600) connected to the outside are passed through the prefabricated pipe (900); S22. The propulsion mechanism (100) and the jacking mechanism (200) are started, the jacking mechanism (200) shovels into the soil, the soil shoveled into the soil by the jacking mechanism (200) is flushed by the flushing assembly (600) and then enters the crushing assembly (400) through the collecting bucket (203), the crushing assembly (400) crushes the stones and lumps in the soil to form mud, and the discharge assembly (500) transports the crushed mud in the crushing assembly (400) to a collection device on the ground; S22. When a section of the prefabricated pipe (900) is pushed into place, the advancement is stopped and steps S21 to S22 are repeated; S3. Construction completion and acceptance: After the jacking mechanism (200) enters the receiving well, the equipment operation is stopped and a comprehensive inspection is performed on all the prefabricated pipes (900).

10. A pipe jacking construction method for a municipal pipeline according to claim 9, characterized in that: In the step S2, after one section of the prefabricated pipe (900) is pushed into place and before another section of the prefabricated pipe (900) is installed, a connection sleeve (901) is installed between two adjacent sections of the prefabricated pipe (900).

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