Multi-functional sludge balance pipe jacking system applied to municipal drainage engineering

Abstract

The application relates to a multifunctional slurry balance pipe jacking system applied to municipal drainage engineering, which comprises a slurry balance pipe jacking machine, main pipe jacking equipment, measuring equipment, an electrical control system, slurry circulating equipment and a guide rail assembly. The slurry balance pipe jacking machine comprises a machine body, a cutter head and a rotating mechanism arranged from front to back at the front end of the machine body, the rotating mechanism comprises a driving shaft penetrating through a partition plate and being in driving cooperation with the cutter head, main stone crushing blades are arranged on the outer periphery of a slurry cavity of the driving shaft, auxiliary stone crushing blades are arranged on the outer periphery of a stone crushing shaft, the main stone crushing blades and the auxiliary stone crushing blades are combined to realize complete and efficient stone crushing, and the slurry circulating equipment reenters chemical treatment agents into slurry circulation after the slurry is deposited, so that the water input amount is reduced. By adopting the above scheme, the multifunctional slurry balance pipe jacking system applied to municipal drainage engineering is provided, slurry can be smoothly discharged, and water resources can be saved.

Description

Technical Field

[0001] This invention relates to the field of municipal drainage engineering, and more specifically to a multifunctional slurry balance pipe jacking system applied to municipal drainage engineering. Background Technology

[0002] With social development, the construction of municipal drainage projects has progressed rapidly. Municipal drainage projects generally refer to projects that collect and discharge domestic sewage, various wastewaters from production, excess surface water, and groundwater (lowering the groundwater level). Among them, sewage pipes in municipal drainage projects are generally buried at a relatively deep depth, necessitating the introduction of pipe jacking construction technology. The traditional method used is "open-type extrusion jacking" construction technology. Because this construction technology is simple, easy to master, and inexpensive, it has been widely used. However, in actual use, the limitations of this construction technology have gradually been exposed. That is, it can only be used to construct pipes within 50m and requires impermeable clay, silty clay, silt, etc.

[0003] To overcome the permeable geological layer, a "slurry balance jacking technology" was developed, which is achieved in conjunction with a slurry balance pipe jacking construction system. This technology uses slurry pressure to balance soil pressure and groundwater pressure, and uses slurry as a medium for transporting excavated soil, effectively solving the problem of ensuring construction safety.

[0004] The slurry balance pipe jacking system mainly includes a slurry balance pipe jacking machine, main jacking equipment, measuring equipment, electrical control system, slurry circulation equipment, and guide rails. Existing systems have the following drawbacks: ① The slurry balance pipe jacking machine includes a machine body. A cutterhead and a rotating mechanism are located at the front of the machine body from front to back. A partition is placed between the cutterhead and the rotating mechanism, forming a slurry chamber in front of the rotating mechanism. The rotating mechanism includes a drive shaft that passes through the partition and cooperates with the cutterhead. The cutterhead has a connection port to the slurry chamber. A slurry inlet is located above the partition, and a slurry outlet is located below. Stones excavated by the blades in front of the cutterhead enter the slurry chamber through the connection port and flow out of the slurry chamber with the slurry water from the outlet. During this stone removal process, the stones entering the slurry chamber still have a certain volume. The diameter of the slurry outlet is limited, and excessively large stones inevitably hinder the efficiency of slurry drainage, thus affecting the slurry pressure and reducing the slurry balance effect. ② The slurry circulation equipment includes a slurry chamber, a slurry pool, a slurry input pipe, and a slurry output pipe. The slurry input pipe is connected to the slurry chamber and the slurry balance pipe jacking machine and is equipped with an input slurry pump to input slurry into the slurry balance pipe jacking machine and a pressure regulating valve to adjust the pressure. The slurry output pipe is connected to the slurry balance pipe jacking machine and the slurry pool and is equipped with an output slurry pump to output slurry into the slurry pool. The slurry in the slurry pool is directly discharged to the outside through the slurry discharge valve. The slurry contains reusable water, and direct discharge into the outside leads to waste of water resources. ③ When the slurry balance pipe jacking machine is hoisted into the caisson, it is placed directly on the guide rail that guides the movement of the slurry balance pipe jacking machine. Then, the main jacking equipment pushes the slurry balance pipe jacking machine into the soil. The subsequent pipe jacking is also guided by the guide rail and follows the slurry balance pipe jacking machine into the tunnel. After being squeezed by heavy objects for a long time, the guide rail will inevitably sink. In the case of a long pipe length, this will undoubtedly increase the error of the pipe jacking construction. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a multifunctional slurry balance pipe jacking system for municipal drainage projects that allows for smooth slurry drainage.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a slurry-balanced pipe jacking machine, a main jacking device, measuring equipment, an electrical control system, a slurry circulation device, and a guide rail assembly. The slurry-balanced pipe jacking machine includes a body. A cutterhead and a rotating mechanism are arranged from front to back at the front end of the body. A partition is provided between the cutterhead and the rotating mechanism, forming a drive chamber for mounting the rotating mechanism and a slurry chamber located in front of the rotating mechanism. The rotating mechanism includes a drive shaft that passes through the partition and drives the cutterhead. The cutterhead has a communication port with the slurry chamber. A slurry inlet is provided above the partition, and a slurry outlet is provided below it. Excavating blades are arranged in front of the cutterhead. A main jacking device is located on the outer periphery of the slurry chamber via the drive shaft. The crushing blades are located on the outer periphery of the drive chamber, and a drive gear is arranged around the drive shaft. Multiple crushing shafts that rotate with the partition are arranged around the drive shaft. Secondary crushing blades are located on the outer periphery of the slurry chamber, and a transmission gear meshing with the drive gear is located on the outer periphery of the drive chamber. There are four crushing shafts, equidistantly located on the same circumference. Both the main and secondary crushing blades are helical. The slurry circulation equipment includes a slurry chamber, a slurry input pipe, a slurry output pipe, and two sedimentation tanks located on the ground. The slurry input pipe connects to the slurry chamber and the slurry inlet of the slurry-balanced pipe jacking machine and is equipped with an input slurry pump to input slurry into the slurry-balanced pipe jacking machine and a pressure regulating valve to adjust the pressure. The slurry output pipe... One end is connected to the slurry outlet of the slurry-balanced pipe jacking machine, and the other end is provided with output branch pipes connecting to different sedimentation tanks. Each slurry output pipe is equipped with an output slurry pump to output slurry from the slurry-balanced pipe jacking machine. Each output branch pipe is equipped with a first manual control valve. Each sedimentation tank is respectively equipped with a slurry circulation pipe connected to a slurry chamber. Each slurry circulation pipe is equipped with a circulating slurry pump and a first replenishment device for replenishing chemical treatment agents. The slurry chamber is equipped with a second replenishment device for replenishing chemical treatment agents. The first replenishment device includes a first material cylinder fixed above the slurry circulation pipe, and a first replenishment channel connected to the slurry circulation pipe is provided below the first material cylinder. The first replenishment channel... The system includes a first solenoid valve and a second solenoid valve. The first replenishment channel, located between the first and second solenoid valves, forms a transfer section for the chemical treatment agent. It also includes a stirring device. The second replenishment device includes a second material cylinder fixed above the mud-water chamber. A discharge port and a timer solenoid valve are located below the second material cylinder. The mud-water chamber, from top to bottom, includes a cylindrical section, a frustum section, and a cylindrical section. The diameter of the cylindrical section is the same as the upper end of the frustum section. The diameter of the frustum section gradually decreases with decreasing height. The diameter of the cylindrical section is the same as the lower end of the frustum section. The stirring device includes a stirring motor fixed above the mud-water chamber, which drives a downwardly extending stirring shaft.The stirring shaft is equipped with stirring blades on the frustum-shaped portion.

[0007] By adopting the above technical solution and making reasonable use of the existing drive shaft, the crushing shaft is driven to rotate simultaneously with the drive cutter head, resulting in a more streamlined structure. Not only are secondary crushing blades installed outside the crushing shaft, but primary crushing blades are also installed around the drive shaft. The primary and secondary crushing blades rotate in opposite directions, achieving a better crushing effect. The four crushing shafts work together to provide a wider and more uniform crushing range, while also providing space for the upper sludge inlet and the lower sludge outlet. Furthermore, two sedimentation tanks are added; one is used for static sedimentation, while the other transports the settled sludge to the sludge chamber, allowing for the reuse of some water resources. The switching between sedimentation tanks... The system is controlled by opening one of the first manual control valves and closing the other. To ensure that an equal amount of chemical treatment agent falls at a time, the first solenoid valve is first opened to allow the chemical treatment agent to fall. Then, the first solenoid valve is closed and the second solenoid valve is opened to allow the chemical treatment agent to continue falling or flow with the mud and water. At the same time, the intermediate section can also effectively prevent the mud and water from contaminating the chemical treatment agent. A second feed cylinder is added to replenish the chemical treatment agent in large quantities. In addition, to ensure that the chemical treatment agent and mud and water are fully mixed, a stirring shaft is added to stir it. To improve the stirring effect, the stirring blades are located in the gradually contracting frustum section, so that the mud and water are brought closer to the center and fully stirred by the stirring blades.

[0008] The invention is further configured such that: the crushing shaft is provided with an assembly section for mounting a transmission gear; the outer periphery of the assembly section is axially slidingly fitted and circumferentially rotating fitted with the inner periphery of the transmission gear; the front end of the assembly section is provided with a limiting step that abuts against the transmission gear; the rear end is provided with a threaded nut; a cylindrical compression spring is sleeved on the assembly section and compressed between the transmission gear and the nut; the end faces of the limiting step and the transmission gear are respectively provided with trapezoidal and meshing linkage teeth; a sensing groove is provided behind the transmission gear in the assembly section; and a sensor is provided in the sensing groove that is triggered when the inner periphery of the transmission gear is covered.

[0009] By adopting the above technical solution, the cylindrical compression spring compressed between the transmission gear and the nut keeps the linkage teeth of the transmission gear in constant contact with the linkage teeth of the limiting step, ensuring stable circumferential linkage between the crushing shaft and the transmission gear. When the secondary crushing blade gets stuck, as the drive shaft continues to rotate, the linkage teeth will move to the trapezoidal inclined surface of another linkage tooth and enter the next linkage groove, preventing the secondary crushing blade from being damaged due to the continued rotation of the crushing shaft. Under the continued rotation of the main crushing blade, the stuck stone will be transferred, thus allowing the equipment to continue operating. In addition, the rotation of the nut can adjust the compression degree of the spring, which is used to adjust the threshold of the transmission gear offset, improving practicality and greatly improving the ease of assembly of the transmission gear. When the transmission gear shifts laterally due to the secondary crushing blade getting stuck, the sensor will record the time and number of times it gets stuck. On the one hand, this data can be used for research and improvement; on the other hand, when the number of times increases significantly, the machine can be stopped for inspection.

[0010] The present invention is further configured such that: the digging blade includes a main digging blade and four sets of auxiliary digging blades; the main digging blade is triangular in shape and fixed at the center of the cutterhead circumference; each set of auxiliary digging blades includes multiple pairs of radially arranged auxiliary digging blades in a figure-eight shape; the circular included angle between adjacent sets of auxiliary digging blades is 90°; and the connecting port is located between adjacent sets of auxiliary digging blades and is fan-shaped.

[0011] By adopting the above technical solution, the main digging blade and the secondary digging blade group form a better digging capacity, and the space between the secondary digging blade groups is used as a connection point to allow the excavated rocks to be discharged backward as soon as possible, thereby improving practicality.

[0012] The present invention is further configured such that: the bottom of the sedimentation tank is provided with a support leg to raise the sedimentation tank; a cleaning port is provided on the side of the sedimentation tank; a vertically arranged sliding groove is provided on both sides of the cleaning port; a sealing plate is slidably arranged between the sliding grooves on both sides to close the cleaning port; the sealing plate is provided with a drain valve; and the sealing plate is provided with a handle for plugging and unplugging.

[0013] By adopting the above technical solution, the sedimentation tank is raised and a cleaning port is added, which makes it easier to clean the sediment at the bottom of the sedimentation tank with tools after docking with the trolley. The plug-in sealing plate makes the cleaning port more tightly sealed, and the drain valve added to the sealing plate allows the fluid in the sedimentation tank to be drained before cleaning.

[0014] The present invention is further configured such that: the guide rail assembly includes a track rod, a fixed base plate, and a movable base plate; the track rod is supported on both sides below the jacking pipe; the fixed base plate is fixed to the bottom of the caisson; the track rod is fixed to the movable base plate; the movable base plate is located above the fixed base plate and forms a stacking space with the fixed base plate; multiple heightening pads of unit length are stacked in the stacking space; multiple sleeves are vertically arranged around the movable base plate; the fixed base plate is provided with guide rods that correspond one-to-one with the sleeves and slide vertically with the sleeves; the fixed base plate is provided with multiple hydraulic buffers that buffer the movable base plate; the hydraulic buffers include cylinders and piston rods; the fixed base plate is provided with multiple mounting holes; the cylinders extend through the mounting holes to the bottom of the fixed base plate; a cylinder flange fixed to the fixed base plate is provided on the outer periphery of the cylinder above the fixed base plate; and a rod flange fixed to the bottom of the movable base plate is provided at the upper end of the piston rod.

[0015] By adopting the above technical solution, after the jacking pipe is lowered to the track pole by the hoisting equipment, the hydraulic buffer is squeezed as the movable base plate descends until the movable base plate is in complete contact with the heightening pad, thus placing the jacking pipe in place. During this process, the buffering effect of the hydraulic buffer greatly reduces the possibility of sinking and deformation. In the event of long-term compression by heavy objects and sinking of the track pole, it can be detected by the on-site detection equipment. After one jacking pipe is completed, a new heightening pad can be inserted into the stacking space to compensate for the height and restore the jacking pipe position to accuracy, thereby ensuring the overall construction accuracy. In addition, most of the components in this device can be disassembled and transferred for continued use, reducing construction costs. Moreover, the hydraulic buffer not only has a buffering function but also acts as a lifting aid for the movable base plate, making it easy to add heightening pads to the stacking space. Furthermore, by digging a pit at the position corresponding to the mounting hole on the bottom of the caisson and designing the cylinder of the hydraulic buffer to sink, on the one hand, some pressure is transferred to the caisson, and on the other hand, the height of the stacking space is reduced, making the structure more compact.

[0016] The present invention is further configured such that: two of the aforementioned guide rods serve as limiting guide rods, the limiting guide rods are located on the side of the stacking space and are used to align the heightening pad; the upper edge of the side of the heightening pad opposite to the limiting guide rod is provided with a guide chamfer; at least four of the aforementioned guide rods serve as guiding guide rods, the guiding guide rods are located on both sides of the jacking pipe's descent position and limit the jacking pipe's sides; the upper end of the guiding guide rod is provided with a guiding block, the guiding block being a frustum-shaped structure with a smaller upper end and a larger lower end; the lower end inside the sleeve is provided with a guiding notch, the guiding notch being a frustum-shaped structure with a smaller upper end and a larger lower end.

[0017] By adopting the above technical solution and making reasonable use of the guide rod, which also serves as the alignment point for the heightening pad, the supporting effect of the heightening pad is made more stable. At the same time, the guide chamfer can gradually push the movable base plate upward when the heightening pad is inserted into the stacking space, improving practicality. In addition, the guide rod is used to roughly limit the two sides of the jacking pipe, reducing the swaying caused by external influences during the hoisting and descent process, and avoiding danger. Furthermore, the guide block not only makes it easy to connect with the guide notch, but also automatically guides the jacking pipe inward when it contacts the upper end of the guide rod, improving practicality.

[0018] The present invention is further configured such that each of the track rods is provided with a corresponding support cross-section, and the height of the support cross-section gradually decreases as it approaches the middle.

[0019] By adopting the above technical solution, compared with the traditional complete cylindrical track rod, a supporting cross-section is added, which makes the center of gravity of the jacking pipe lower and the alignment more accurate. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a specific embodiment of the present invention;

[0021] Figure 2 A 3D view of a slurry-balanced pipe jacking machine;

[0022] Figure 3 Cross-section of a slurry-balanced pipe jacking machine Figure 1 ;

[0023] Figure 4 for Figure 3 Enlarged view of A in the middle;

[0024] Figure 5 Cross-section of a slurry-balanced pipe jacking machine Figure 2 ;

[0025] Figure 6 for Figure 5 Enlarged view of B in the middle;

[0026] Figure 7 This is a schematic diagram of the structure of a crusher shaft;

[0027] Figure 8 This is a schematic diagram of the piping for a mud-water circulation system.

[0028] Figure 9 This is a schematic diagram of the first supplementary device;

[0029] Figure 10 This is a schematic diagram of the mud-water chamber structure;

[0030] Figure 11 This is a schematic diagram of the sedimentation tank.

[0031] Figure 12 A 3D view of the guide rail assembly;

[0032] Figure 13 Exploded view of the guide rail assembly;

[0033] Figure 14 This is a bottom-view perspective of the movable base plate. Detailed Implementation

[0034] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] In the description of this invention, 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. They are used only for the convenience of describing the invention and for 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. Therefore, they should not be construed as limitations on the 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.

[0036] like Figure 1 — Figure 14 As shown, this invention discloses a multifunctional slurry balance pipe jacking system for municipal drainage engineering, including a slurry balance pipe jacking machine 1, a main jacking device 2, measuring equipment, an electrical control system 4, a slurry circulation device 5, and a guide rail assembly 6. Figure 1Point a is a caisson. The measuring equipment consists of infrared detectors and other related equipment located below the caisson. The electrical control system 4 is located on a control platform at a certain height. The main jacking equipment 2 and the guide rail assembly 6 are located at the bottom of the caisson. The main jacking equipment 2 is generally a jack. The guide rail assembly 6 supports and guides the slurry balance pipe jacking machine 1 and the pipe jacking for construction. The slurry balance pipe jacking machine 1 includes a body 11. A cutterhead 12 and a rotating mechanism 13 are arranged from front to back at the front end of the body 11. A partition 111 is arranged between the cutterhead 12 and the rotating mechanism 13 on the body 11, forming a drive chamber 112 for installing the rotating mechanism 13 and a slurry chamber 113 located in front of the rotating mechanism 13. The rotating mechanism 13 includes a drive shaft 131 that passes through the partition 111 and drives the cutterhead 12, and a reduction motor 132 that drives the drive shaft 131 to rotate. The cutterhead 12 is provided with a connection port 121 to the mud and water chamber 113. A mud and water inlet 1111 is provided above the partition 111, and a mud and water outlet 1112 is provided below it. A digging blade 122 is provided in front of the cutterhead 12. A main crushing blade 1311 is provided on the outer periphery of the mud and water chamber 113, and a drive gear 1312 is provided on the outer periphery of the drive chamber 112. Multiple crushing shafts 14 that rotate and cooperate with the partition 111 are arranged around the drive shaft 131. A secondary crushing blade 141 is provided on the outer periphery of the crushing shaft 14 in the mud and water chamber 113, and a transmission gear 142 that meshes with the drive gear 1312 is provided on the outer periphery of the drive chamber 112. There are four crushing shafts 14, which are equidistant from each other on the same circumference. Both the main crushing blade 1311 and the secondary crushing blade 141 are spiral.

[0037] The crushing shaft 14 is provided with an assembly section 143 for mounting the transmission gear 142. The outer periphery of the assembly section 143 is axially sliding and circumferentially rotating with the inner periphery of the transmission gear 142. The front end of the assembly section 143 is provided with a limiting step 1431 that abuts against the transmission gear 142, and the rear end is provided with a threaded nut 1432. The assembly section 143 is fitted with a cylindrical compression spring 1433 that is compressed between the transmission gear 142 and the nut 1432. The end faces of the limiting step 1431 and the transmission gear 142 are respectively provided with trapezoidal and meshing linkage teeth 14311. The assembly section 143 is provided with a sensing groove 1434 behind the transmission gear 142. The sensing groove 1434 is provided with a sensor 14341 that is triggered when the inner periphery of the transmission gear 142 is covered. The sensor can be a light sensor or a switch.

[0038] The digging blade 122 includes a main digging blade 1221 and four sets of auxiliary digging blade groups 1222. The main digging blade 1221 is triangular in shape and fixed at the center of the cutterhead 12. Each auxiliary digging blade group 1222 includes multiple pairs of auxiliary digging blades 122 arranged radially in a figure-eight shape. The circular included angle between adjacent auxiliary digging blade groups 1222 is 90°. The connecting port 121 is located between adjacent auxiliary digging blade groups 1222 and is fan-shaped.

[0039] The slurry circulation equipment 5 includes a slurry chamber 51, a slurry input pipe 52, a slurry output pipe 53, and two sedimentation tanks 54 located on the ground. The slurry input pipe 52 is connected to the slurry chamber 51 and the slurry inlet 1111 of the slurry jacking machine 1, and is equipped with an input slurry pump 521 for inputting slurry into the slurry jacking machine 1 and a pressure regulating valve 522 for adjusting the pressure. One end of the slurry output pipe 53 is connected to the slurry outlet 1112 of the slurry jacking machine 1, and the other end is equipped with an output branch pipe 531 connected to different sedimentation tanks 54. The slurry output pipe 53 is equipped with a system to transfer slurry from the slurry chamber 51 to the sedimentation tank 54. The mud pump 532 outputs from the mud-water balance pipe jacking machine 1. Each output branch pipe 531 is equipped with a first manual control valve 533. Each sedimentation tank 54 is equipped with a mud-water circulation pipe 55 connected to the mud-water chamber 51. Each mud-water circulation pipe 55 is equipped with a circulating mud pump 551 and a first replenishment device 56 for replenishing chemical treatment agents. The mud-water chamber 51 is equipped with a second replenishment device 57 for replenishing chemical treatment agents. Water in the mud-water chamber 1 can be directly connected by a water pipe. The first replenishment device 56 includes a first material cylinder 561 fixed above the mud-water circulation pipe, and a bottom part of the first material cylinder 561 is provided with... The system includes a first replenishment channel 562 connected to the mud-water circulation pipe 55. A first solenoid valve 563 and a second solenoid valve 564 are sequentially installed in the first replenishment channel 562. The portion of the first replenishment channel 562 between the first solenoid valve 563 and the second solenoid valve 564 forms a transfer section 565 for the chemical treatment agent. The system also includes a stirring device 58. The second replenishment device 57 includes a second material cylinder 571 fixed above the mud-water chamber 51. A discharge port 5711 and a timer solenoid valve 5712 located below the second material cylinder 5711 are provided. The timer solenoid valve has a timer function. The solenoid valve can also be controlled by the circuit. The mud and water chamber 51 includes a cylindrical part 511, a frustum part 512 and a cylindrical part 513 from top to bottom. The diameter of the cylindrical part 511 is the same as the upper end of the frustum part 512. The diameter of the frustum part 512 gradually decreases as the height decreases. The diameter of the cylindrical part 513 is the same as the lower end of the frustum part 512. The stirring device 58 includes a stirring motor 581 fixed above the mud and water chamber 51. The stirring motor 581 drives a stirring shaft 582 that extends downward. The stirring shaft 582 is located on the frustum part 512 and is equipped with stirring blades 583.

[0040] The sedimentation tank 54 is provided with support legs 541 at the bottom to raise the sedimentation tank 54. A cleaning port 542 is provided on the side of the sedimentation tank 54. A vertically arranged chute 5421 is provided on both sides of the cleaning port 542. A sealing plate 543 is slidably arranged between the two chute 5421 to close the cleaning port 542. A drain valve 5431 is provided on the sealing plate 543. A handle 5432 for plugging and unplugging is provided on the sealing plate 543.

[0041] The guide rail assembly 6 includes a track rod 61, a fixed base plate 62, and a movable base plate 63. The track rod 61 is supported on both sides below the jacking pipe. The fixed base plate 62 is fixed to the bottom of the caisson. The track rod 61 is fixed to the movable base plate 63. The movable base plate 63 is located above the fixed base plate 62 and forms a stacking space 64 between them. Multiple heightening pads 65 of unit length are stacked in the stacking space 64. The unit length can be customized according to site requirements, such as 1cm, 2cm, 5cm, etc. Multiple sleeves 631 are vertically arranged around the movable base plate 63. The fixed base plate 62 is provided with sleeves 631. The guide rods 621 correspond one-to-one with the tubes 631 and slide vertically with the sleeves 631. The fixed base plate 62 is provided with a plurality of hydraulic buffers 66 that buffer the movable base plate 63. The hydraulic buffers 66 include cylinders 661 and piston rods 662. The fixed base plate 62 is provided with a plurality of mounting holes 622. The cylinders 661 extend through the mounting holes 622 to the bottom of the fixed base plate 62. The outer periphery of the cylinders 661 is provided above the fixed base plate 62 and is fixed to the fixed base plate 62. The upper end of the piston rod 662 is provided with rod flanges 6621 fixed to the bottom of the movable base plate 63.

[0042] Two of the guide rods 621 serve as limiting guide rods b, which are located on the side of the stacking space 64 and are used to align the heightening pad 65. The upper edge of the side of the heightening pad 65 opposite to the limiting guide rods b is provided with a guide chamfer 651. At least four guide rods 621 serve as guiding guide rods b. The guiding guide rods c are located on both sides of the jacking pipe's descent position and limit the jacking pipe's sides. The upper end of the guiding guide rod c is provided with a guiding block 6211, which is shaped like a frustum with a smaller top and a larger bottom. The lower end of the sleeve 631 is provided with a guiding notch 6311, which is also shaped like a frustum with a smaller top and a larger bottom.

[0043] Each track rod 61 is provided with a corresponding support cross section 611, and the height of the support cross section 611 gradually decreases as it approaches the middle.

Claims

1. A multifunctional slurry balance pipe jacking system for municipal drainage engineering, comprising a slurry balance pipe jacking machine, a main jacking device, measuring equipment, an electrical control system, a slurry circulation device, and a guide rail assembly. The slurry balance pipe jacking machine includes a body, with a cutterhead and a rotating mechanism arranged from front to back at the front end of the body. A partition is provided between the cutterhead and the rotating mechanism, forming a drive chamber for mounting the rotating mechanism and a slurry chamber located in front of the rotating mechanism. The rotating mechanism includes a drive shaft passing through the partition and cooperating with the cutterhead. The cutterhead has a communication port with the slurry chamber. A slurry inlet is provided above the partition, and a slurry outlet is provided below it. Excavation blades are provided in front of the cutterhead. The system is characterized by: The drive shaft is equipped with main crushing blades on the outer periphery of the slurry chamber, and a drive gear on the outer periphery of the drive chamber. Multiple crushing shafts that rotate with partitions are arranged around the drive shaft. Secondary crushing blades are located on the outer periphery of the crushing shafts within the slurry chamber. A transmission gear that meshes with the drive gear is located on the outer periphery of the drive chamber. There are four crushing shafts, equidistantly located on the same circumference. Both the main and secondary crushing blades are helical. The slurry circulation equipment includes a slurry chamber, a slurry input pipe, a slurry output pipe, and two sedimentation tanks located on the ground. The slurry input pipe connects the slurry chamber and the slurry inlet of the slurry-balanced pipe jacking machine and is equipped with an input slurry pump to feed slurry into the slurry-balanced pipe jacking machine. The system includes a pressure regulating valve for adjusting pressure. One end of the mud-water output pipe is connected to the mud-water outlet of the mud-water balance pipe jacking machine, and the other end is provided with output branch pipes connected to different sedimentation tanks. The mud-water output pipe is equipped with an output mud pump to output mud-water from the mud-water balance pipe jacking machine. Each output branch pipe is equipped with a first manual control valve. Each sedimentation tank is respectively equipped with a mud-water circulation pipe connected to the mud-water chamber. Each mud-water circulation pipe is equipped with a circulating mud pump and a first replenishment device for replenishing chemical treatment agents. The mud-water chamber is equipped with a second replenishment device for replenishing chemical treatment agents. The first replenishment device includes a first material cylinder fixed above the mud-water circulation pipe, and a material cylinder connected to the mud-water circulation pipe is provided below the first material cylinder. A first supplementary channel connected by a ring pipeline is provided, and a first solenoid valve and a second solenoid valve are sequentially installed in the first supplementary channel. The portion of the first supplementary channel between the first and second solenoid valves forms a transfer section for the chemical treatment agent. It also includes a stirring device. The second supplementary device includes a second material cylinder fixed above the mud-water chamber. A discharge port and a timer solenoid valve are located below the second material cylinder. The mud-water chamber, from top to bottom, includes a cylindrical portion, a frustum portion, and a cylindrical portion. The diameter of the cylindrical portion is the same as the upper end of the frustum portion. The diameter of the frustum portion gradually decreases as the height decreases. The diameter of the cylindrical portion is the same as the lower end of the frustum portion. The stirring device includes a component fixed above the mud-water chamber. The stirring motor drives a downwardly extending stirring shaft. The stirring shaft has stirring blades on its frustum-shaped portion. The crushing shaft has an assembly section for mounting a transmission gear. The outer circumference of the assembly section is axially slidingly and circumferentially rotating with the inner circumference of the transmission gear. The front end of the assembly section has a limiting step that abuts against the transmission gear, and the rear end has a threaded nut. A cylindrical compression spring is fitted onto the assembly section and compressed between the transmission gear and the nut. The end faces of the limiting step and the transmission gear respectively have trapezoidal, meshing linkage teeth. A sensing groove is located behind the transmission gear on the assembly section, and a sensor is installed in the sensing groove to be triggered when the inner circumference of the transmission gear is covered.

2. The multifunctional slurry balance pipe jacking system for municipal drainage engineering according to claim 1, characterized in that: The excavating blades include a main excavating blade and four sets of secondary excavating blades. The main excavating blade is triangular in shape and fixed at the center of the cutterhead. Each set of secondary excavating blades includes multiple pairs of radially arranged secondary excavating blades in a figure-eight shape. The circular included angle between adjacent sets of secondary excavating blades is 90°. The connecting port is located between adjacent sets of secondary excavating blades and is fan-shaped.

3. The multifunctional slurry balance pipe jacking system for municipal drainage engineering according to claim 1, characterized in that: The sedimentation tank is provided with support legs at the bottom to raise the sedimentation tank. A cleaning port is provided on the side of the sedimentation tank. A vertically arranged sliding groove is provided on both sides of the cleaning port. A sealing plate is slidably arranged between the sliding grooves on both sides to close the cleaning port. The sealing plate is provided with a drain valve and a handle for plugging and unplugging.

4. The multifunctional slurry balance pipe jacking system for municipal drainage engineering according to claim 1, characterized in that: The guide rail assembly includes a track rod, a fixed base plate, and a movable base plate. The track rod is supported on both sides below the jacking pipe. The fixed base plate is fixed to the bottom of the caisson. The track rod is fixed to the movable base plate. The movable base plate is located above the fixed base plate and forms a stacking space with the fixed base plate. Multiple heightening pads of unit length are stacked in the stacking space. Multiple sleeves are vertically arranged around the movable base plate. The fixed base plate is provided with guide rods that correspond one-to-one with the sleeves and slide vertically with the sleeves. The fixed base plate is provided with multiple hydraulic buffers that buffer the movable base plate. The hydraulic buffers include cylinders and piston rods. The fixed base plate is provided with multiple mounting holes. The cylinders extend through the mounting holes to the bottom of the fixed base plate. A cylinder flange fixed to the fixed base plate is provided on the outer periphery of the cylinder above the fixed base plate. A rod flange fixed to the bottom of the movable base plate is provided on the upper end of the piston rod.

5. The multifunctional slurry balance pipe jacking system for municipal drainage engineering according to claim 4, characterized in that: Two of the aforementioned guide rods serve as limiting guide rods, located on the side of the stacking space and used to align the heightening pad. The upper edge of the side of the heightening pad opposite to the limiting guide rod is provided with a guide chamfer. At least four of the aforementioned guide rods serve as guiding guide rods, located on both sides of the jacking pipe's descent position and limiting the jacking pipe's sides. A guiding block is provided at the upper end of each guiding guide rod, the guiding block being a frustum-shaped block with a smaller top and a larger bottom. A guiding notch is provided at the lower end of the sleeve's interior, the guiding notch also being a frustum-shaped block with a smaller top and a larger bottom.

6. The multifunctional slurry balance pipe jacking system for municipal drainage engineering according to claim 5, characterized in that: Each of the aforementioned track rods is provided with a corresponding support cross-section, and the height of the support cross-section gradually decreases as it approaches the middle.

Images