Slurry balance pipe jacking equipment
By using the design of water jet pipes, mixing components and spiral blades in the mud water balance hoisting equipment, the problem of water jet pipe blockage caused by soil pressure fluctuations is solved, and a stable and reliable water outlet capacity is achieved.
Patent Information
- Application Number
- CN202422168413.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-04
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-09-04
AI Technical Summary
During the construction of the top pipe, fluctuations in the soil pressure in the mixing bin may cause the soil to enter the water spray pipe in reverse, causing blockage and affecting the water outlet capacity of the water spray pipe.
A mud water balance hoisting equipment is designed, which adopts structures such as water jet pipes, mixing components and spiral blades. The mixing component drives the mixing shaft to rotate, and drives the mixing rod to stir the water and soil in the water jet pipe to prevent soil from accumulation, and increases the water flow pressure through the spiral blades to prevent soil from entering the water jet pipe.
It effectively reduces the possibility of soil reverse entering the water spray pipe, ensures the water outlet capacity of the water spray pipe, and makes the work of the pipe top equipment more stable and reliable.
Smart Images
Figure CN223004022U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of pipeline construction, and in particular to a slurry balance pipe jacking equipment. Background Art
[0002] In urban construction and underground pipeline laying, due to the inconvenience of large-area excavation, pipe jacking construction technology is often used for excavation. Pipe jacking construction technology is a non-excavation construction method that relies on the jacking force generated by the jacking equipment to overcome the friction between the pipeline and the surrounding soil, jack the pipeline into the soil according to the designed slope, and transport the soil away in a solid or slurry state.
[0003] In the related art, there is a designed slurry balance pipe jacking, which includes a pipe jacking body. A cutting head is rotatably arranged at the top end of the pipe jacking body. A partition is fixedly arranged inside the pipe jacking body. The space between the partition and the cutting head is set as a mixing chamber. A motor for driving the cutting head to rotate is arranged on the partition. A water spraying pipe is arranged inside the pipe jacking body. A number of water spraying holes are arranged on the water spraying pipe. A conveying pipe penetrates through the partition. A slag discharging screw is rotatably arranged inside the conveying pipe. The conveying pipe is communicated with a slag discharging pipe. When in use, the jacking equipment pushes the pipe jacking body forward. The motor drives the cutting head to rotate. The cutting tools on the cutting head cut the soil in front of the pipe jacking body to loosen the soil and make it enter the mixing chamber. The water spraying pipe injects water into the soil through the water spraying holes to further soften the soil. Finally, the slag discharging screw rotates to guide the soil into the slag discharging pipe through the conveying pipe and discharge it.
[0004] In the process of implementing this application, it is found that there are at least the following problems in this technology: The soil pressure inside the pipe jacking body is directly related to the advancing speed of the pipe jacking body and the soil discharging speed of the slag discharging component. Therefore, the soil pressure in the mixing chamber is not constant. Once the soil pressure in the mixing chamber is too large, the soil may enter the water spraying pipe in the reverse direction along the water spraying holes and accumulate in the water spraying pipe, which may block the water spraying pipe and affect the water discharging capacity of the water spraying pipe. Summary of the Utility Model
[0005] In order to avoid soil blocking the water spraying pipe as much as possible and ensure the water discharging capacity of the water spraying pipe, this application provides a slurry balance pipe jacking equipment.
[0006] The slurry balance pipe jacking equipment provided by this application adopts the following technical solutions:
[0007] A mud-water balanced pipe jacking equipment comprises a pipe jacking body and a stirring assembly, wherein a cutting head is rotatably arranged at the top end of the pipe jacking body, a partition is fixedly arranged in the pipe jacking body, a cutting motor is fixedly installed on the partition, a driving shaft of the cutting motor passes through the partition and is coaxially fixed with a rotating shaft, the rotating shaft is coaxially fixed with the cutting head, a mixing chamber is arranged between the partition and the cutting head; a plurality of water spray pipes are fixedly arranged in the mixing chamber along the radial direction, a water supply channel is connected to the outer end of the water spray pipe, a closed bottom plate is fixedly arranged at the inner end of the water spray pipe, and a plurality of water spray holes are penetrated and opened on the side wall of the water spray pipe away from the cutting head; a stirring shaft is rotatably arranged in the water spray pipe, a plurality of stirring rods are fixedly arranged on the stirring shaft, and the stirring assembly is used to drive the stirring shaft to rotate.
[0008] By adopting the above technical scheme, when the jacking machine body is working, the jacking equipment pushes the jacking machine body forward, and the cutting motor drives the rotating shaft to rotate, thereby driving the cutting head to rotate to cut the soil, and the soil enters the mixing chamber after being loosened; at the same time, the water supply channel supplies water to the water spray pipe, and the water is sprayed from the water spray hole to soften the soil in the mixing chamber; and the stirring assembly drives the stirring shaft to rotate, driving the stirring rod to stir the water and soil in the water spray pipe, preventing the soil from accumulating near the water spray hole and blocking the water spray pipe, thereby ensuring the water output capacity of the water spray pipe; in this way, even if the soil pressure in the mixing chamber fluctuates, it can effectively reduce the possibility of soil reversely entering the water spray pipe and causing blockage, so that the operation of the jacking equipment can be carried out more stably and reliably.
[0009] Preferably, a spiral blade is fixedly provided on the stirring shaft, and the outermost circle of the spiral blade is in contact with the inner wall of the water spray pipe.
[0010] By adopting the above technical solution, the setting of the spiral blades can not only stir the water and soil when the stirring shaft rotates, but also generate a certain pushing force, further increasing the water flow pressure in the water spray pipe, further hindering the soil from entering the water spray pipe, thereby better preventing the water spray pipe from being blocked.
[0011] Preferably, the pitch of the spiral blade changes gradually along the axial direction of the stirring shaft, the pitch of the spiral blade is the largest at one end close to the water supply channel, and the pitch of the spiral blade is the smallest at one end close to the closed bottom plate.
[0012] By adopting the above technical solution, water flows in the water spray pipe while flowing out from the water spray hole, so the water flow will decrease as it flows, and the pitch of the spiral blades gradually changes along the axial direction of the stirring shaft, causing the water flow to move away from the water supply channel, and the storage space of the water supply flow is also reduced accordingly, so as to ensure the pressure and continuity of the water flow.
[0013] Preferably, the stirring assembly includes a first bevel gear and a second bevel gear. The first bevel gear is coaxially fixed to the rotating shaft, the stirring shaft penetrates through the closed bottom plate and is coaxially fixed to the second bevel gear, and all the second bevel gears are meshed with the first bevel gear.
[0014] By adopting the above technical solution, when the rotating shaft rotates, it drives the first bevel gear to rotate, and the first bevel gear further drives all the second bevel gears meshed with it to rotate, thereby realizing the rotation of all the stirring shafts. There is no need to additionally set a power source to drive the stirring shafts, making the structure of the whole device more concise and compact, and the energy utilization more efficient.
[0015] Preferably, a support frame is fixedly arranged in the center of the mixing bin, and a closed box is fixedly arranged on the side wall of the support frame. The first bevel gear and the second bevel gear are both located in the closed box.
[0016] By adopting the above technical solution, the setting of the closed box can protect the first bevel gear and the second bevel gear, separate the soil in the mixing bin, ensure the stable and reliable transmission of the first bevel gear and the second bevel gear, and at the same time reduce the entry of sediment and soil into the gear meshing part, extend the service life of the gears, ensure that the stirring assembly can continuously and stably provide power for the stirring shafts, and thus better maintain the normal working state of the water spray pipe.
[0017] Preferably, a support boss is fixedly arranged on the support frame. The support boss is located in the closed box and abuts against the side wall of the large end of the first bevel gear.
[0018] By adopting the above technical solution, the support boss can provide support and stability for the first bevel gear, share the axial force received by the first bevel gear during rotation, reduce the sway of the first bevel gear, further ensure the reliability of the transmission, and help reduce the axial load of the rotating shaft and improve the stability of the rotating shaft.
[0019] Preferably, a thrust ball bearing is arranged on the support boss. One side of the thrust ball bearing is fixedly connected to the side wall of the support boss, and the other side of the thrust ball bearing abuts against the side wall of the large end of the first bevel gear.
[0020] By adopting the above technical solution, the setting of the thrust ball bearing can further reduce the friction between the first bevel gear and the support boss during rotation, make the rotation of the first bevel gear smoother, and at the same time the support boss can better bear the axial thrust brought by the first bevel gear.
[0021] Preferably, the cutting head includes a rotating disk, crushing blades, and pushing blades. The rotating disk is rotatably engaged with the pipe jacking body. The inner side of the rotating disk is coaxially fixed with a cutting motor. The rotating disk is provided with a plurality of mud inlet holes. The crushing blades are fixedly arranged at the center of the outer side of the rotating disk. A plurality of pushing blades are fixedly arranged on the outer side of the rotating disk.
[0022] By adopting the above technical solution, the rotating disk rotates driven by the cutting motor. The crushing blades can first crush the soil in front, facilitating subsequent excavation and the advancement of the pipe jacking body. The pushing blades can assist in further loosening the crushed soil so that the soil can be pushed into the mixing chamber. The mud inlet holes are conducive to the soil entering the mixing chamber from the mud inlet holes, further improving the working performance and construction efficiency of the entire slurry balance pipe jacking equipment.
[0023] In summary, the present application includes at least one of the following beneficial technical effects:
[0024] 1. By providing a water spraying pipe, a water flow channel, a closed bottom plate, water spraying holes, a stirring shaft, stirring rods, and a stirring assembly, the stirring assembly drives the stirring shaft to rotate, driving the stirring rods to stir the water and soil in the water spraying pipe, preventing the soil from accumulating and blocking the water spraying pipe near the water spraying holes, and ensuring the water outlet capacity of the water spraying pipe;
[0025] 2. By providing spiral blades, when the stirring shaft rotates, not only the water and soil are stirred, but the spiral blades can also generate a certain pushing force, further increasing the water flow pressure in the water spraying pipe, further preventing the soil from entering the water spraying pipe, and pushing away the soil near the water spraying holes, thereby better preventing the water spraying pipe from being blocked;
[0026] 3. By providing a first bevel gear, a second bevel gear, a support frame, a closed box, a support boss, and a thrust ball bearing, the rotation of all stirring shafts is realized. There is no need to additionally set a power source to drive the stirring shafts, and the soil is separated from the gears, making the transmission of the first bevel gear and the second bevel gear stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 is a schematic cross-sectional structure diagram of a slurry balance pipe jacking equipment provided in an embodiment of the present application.
[0028] Figure 2 is Figure 1 an enlarged view of part A in
[0029] Figure 3 a front view schematic diagram of the cutting head in an embodiment of the present application.
[0030] Description of reference numerals: 1. Jacking pipe body; 11. Partition board; 111. Cutting motor; 112. Rotating shaft; 12. Mixing chamber; 121. Water spraying pipe; 1211. Closed bottom plate; 1212. Water spraying holes; 1213. Stirring shaft; 1214. Stirring rod; 1215. Screw blade; 122. Water delivery channel; 13. Support frame; 131. Closed box; 132. Support boss; 1321. Thrust ball bearing; 2. Stirring assembly; 21. First bevel gear; 22. Second bevel gear; 3. Cutting head; 31. Rotating disc; 32. Crushing blade; 33. Propelling blade; 34. Mud inlet hole. Detailed implementation manners
[0031] The following further elaborates on this application in conjunction with the Figures 1-3 accompanying drawings.
[0032] An embodiment of this application discloses a slurry balance jacking pipe device. Referring to Figure 1 , it includes a jacking pipe body 1 and a stirring assembly 2. A cutting head 3 is rotatably arranged at the top end of the jacking pipe body 1 for cutting the soil in front of the top end of the jacking pipe body 1. A partition board 11 is fixedly arranged inside the jacking pipe body 1, a cutting motor 111 is fixedly installed on the partition board 11, the driving shaft of the cutting motor 111 penetrates through the partition board 11 and is coaxially and fixedly provided with a rotating shaft 112, the rotating shaft 112 is coaxially fixed with the cutting head 3, and the space between the partition board 11 and the cutting head 3 is set as a mixing chamber 12, and the mixing chamber 12 is used to accommodate the cut soil.
[0033] Referring to Figure 1 and Figure 2 , a plurality of water spraying pipes 121 are fixedly arranged in the mixing chamber 12 along the radial direction, and all the water spraying pipes 121 are symmetrically arranged about the axis center of the jacking pipe body 1. A water delivery channel 122 is communicated with the outer end of each water spraying pipe 121, and a closed bottom plate 1211 is fixedly arranged at the inner end of the water spraying pipe 121. A plurality of water spraying holes 1212 are penetrated and opened on the side wall of the water spraying pipe 121 facing away from the cutting head 3. A stirring shaft 1213 is rotatably arranged inside the water spraying pipe 121, a plurality of stirring rods 1214 are fixedly arranged on the stirring shaft 1213, and the stirring assembly 2 is used to drive the stirring shaft 1213 to rotate. The stirring assembly 2 drives the stirring shaft 1213 to rotate, driving the stirring rods 1214 to continuously stir the water and soil in the mixing chamber 12 to prevent the soil from accumulating in the water spraying pipe 121.
[0034] To further ensure the water flow pressure inside the water spraying pipe 121, referring to Figure 1 and Figure 2, a spiral blade 1215 is also fixedly arranged on the stirring shaft 1213, and the outermost circle of the spiral blade 1215 is in mutual fit with the inner wall of the water spraying pipe 121. The pitch of the spiral blade 1215 gradually changes step by step along the axial direction of the stirring shaft 1213. The pitch of the spiral blade 1215 is the largest at one end close to the water delivery channel 122, and the pitch of the spiral blade 1215 is the smallest at one end close to the closed bottom plate 1211. When the stirring shaft 1213 rotates, the spiral blade 1215 generates a certain pushing force on the water flow in the water spraying pipe 121, further ensuring the water flow pressure in the water spraying pipe 121, thereby further preventing soil from entering the water spraying pipe 121. And the water flow flows in the water spraying pipe 121 and flows out from the water spraying holes 1212 while flowing. The pitch of the spiral blade 1215 gradually changes step by step along the axial direction of the stirring shaft 1213, so that the farther the water flow is from the water delivery channel 122, the corresponding storage space for the water flow is also reduced, so as to ensure the pressure and continuity of the water flow.
[0035] To facilitate the rotation of the stirring shaft 1213, refer to Figure 1 and Figure 2 , the stirring assembly 2 includes a first bevel gear 21 and a second bevel gear 22. The first bevel gear 21 is coaxially fixed with the rotating shaft 112, and the stirring shaft 1213 penetrates through the closed bottom plate 1211 and is coaxially fixed with the second bevel gear 22. All the second bevel gears 22 are in mutual engagement with the first bevel gear 21. The rotating shaft 112 transmits the rotational motion to the stirring shaft 1213 through the engagement between the first bevel gear 21 and the second bevel gear 22.
[0036] Refer to Figure 1 and Figure 2 , a support frame 13 is fixedly arranged on the inner wall of the mixing bin 12. A closed box is fixedly installed in the center of the support frame 13, and a support boss 132 is fixedly arranged on the side wall. A thrust ball bearing 1321 is arranged on the support boss 132. One side of the thrust ball bearing 1321 is fixedly connected with the side wall of the support boss 132, and the other side of the thrust ball bearing 1321 abuts against the side wall of the large end of the first bevel gear 21. The support boss 132 and the side wall of the large end of the first bevel gear 21 abut against each other through the thrust ball bearing 1321. The support boss 132 and the thrust ball bearing 1321 provide support and stability for the first bevel gear 21, share the axial force received when the first bevel gear 21 rotates, reduce the shaking of the first bevel gear 21, and help reduce the axial load of the rotating shaft 112. The first bevel gear 21, the second bevel gear 22, the support boss 132, and the thrust ball bearing 1321 are all located in the closed box, and the closed box is used to separate the soil outside the closed box.
[0037] To facilitate the entry of soil into the mixing bin 12, refer to Figure 1 and Figure 3The cutting head 3 includes a rotating disk 31, a crushing blade 32, and a propulsion blade 33. The rotating disk 31 rotates in coordination with the pipe jacking body 1. The inner side of the rotating disk 31 is coaxially fixed with the cutting motor 111. A plurality of mud inlet holes 34 are symmetrically arranged on the rotating disk 31. The crushing blade 32 is fixedly arranged at the center of the outer side of the rotating disk 31, and a plurality of propulsion blades 33 are fixedly arranged on the outer side of the rotating disk 31. The rotating disk 31 rotates under the drive of the cutting motor 111. The crushing blade 32 can first crush the soil in front to facilitate the advancement of the pipe jacking body 1. The propulsion blade 33 can assist in loosening the soil, so that the loosened soil enters the mixing chamber 12 from the mud inlet hole 34 as the pipe jacking body 1 is advanced.
[0038] The implementation principle of a mud-water balance pipe jacking device in the embodiment of the present application is as follows: when in use, the jacking device pushes the pipe jacking body 1 forward. The driving shaft of the cutting motor 111 drives the rotating shaft 112 to rotate, thereby rotating the cutting head 3. The crushing blade 32 on the rotating disk 31 first crushes the soil in front to facilitate the advancement of the pipe jacking body 1. The propulsion blade 33 can assist in loosening the soil, so that the loosened soil enters the mixing chamber 12 from the mud inlet hole 34 as the pipe jacking body 1 is pushed forward. At the same time, the water spray pipe 121 supplies water through the water supply channel 122, and the water flows out from the water spray hole 1212 and mixes with the soil. In this process, the rotating shaft 112 drives the first bevel gear 21 to rotate, and through the meshing transmission of the first bevel gear 21 and the second bevel gear 22, the stirring shaft 1213 is driven to rotate, and the stirring rod 1214 on the stirring shaft 1213 continuously stirs the water and soil in the mixing chamber 12. The soil is prevented from blocking the water spray pipe 121 as much as possible, and the water discharge capacity of the water spray pipe 121 is guaranteed. At the same time, the spiral blade 1215 generates a pushing force on the water flow in the water spray pipe 121, and the water flows out from the water spray hole 1212 while flowing in the water spray pipe 121. In this way, water is injected into the soil to further soften the soil, making it convenient to transport the soil out through pipelines, mud pumps, etc.
[0039] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A mud-water balance pipe jacking device, comprising a pipe jacking machine body (1) and a stirring assembly (2), wherein a cutting head (3) is rotatably arranged at the top of the pipe jacking machine body (1), and a partition (11) is fixedly arranged inside the pipe jacking machine body (1), characterized in that: A cutting motor (111) is fixedly mounted on the partition (11); a driving shaft of the cutting motor (111) passes through the partition (11) and is coaxially fixed with a rotating shaft (112); the rotating shaft (112) is coaxially fixed with the cutting head (3); a mixing chamber (12) is arranged between the partition (11) and the cutting head (3); a plurality of water spray pipes (121) are fixedly arranged in a radial direction in the mixing chamber (12); the outer ends of the water spray pipes (121) are connected to the A water supply channel (122) is provided, a closed bottom plate (1211) is fixedly provided at the inner end of the water spray pipe (121), and a plurality of water spray holes (1212) are penetrated and opened on the side wall of the water spray pipe (121) away from the cutting head (3); a stirring shaft (1213) is rotatably provided in the water spray pipe (121), a plurality of stirring rods (1214) are fixedly provided on the stirring shaft (1213), and the stirring assembly (2) is used to drive the stirring shaft (1213) to rotate.
2. The mud-water balanced pipe jacking equipment according to claim 1, characterized in that: The stirring shaft (1213) is also fixedly provided with a spiral blade (1215), and the outermost circle of the spiral blade (1215) is in contact with the inner wall of the water spray pipe (121).
3. A mud-water balanced pipe jacking equipment according to claim 2, characterized in that: The pitch of the spiral blade (1215) changes gradually along the axial direction of the stirring shaft (1213), the spiral pitch of the spiral blade (1215) close to the water supply channel (122) is the largest, and the spiral pitch of the spiral blade (1215) close to the closed bottom plate (1211) is the smallest.
4. The mud-water balanced pipe jacking equipment according to claim 1, characterized in that: The stirring assembly (2) comprises a first bevel gear (21) and a second bevel gear (22); the first bevel gear (21) is coaxially fixed to the rotating shaft (112); the stirring shaft (1213) passes through the closed bottom plate (1211) and is coaxially fixed to the second bevel gear (22); and all the second bevel gears (22) are meshed with the first bevel gear (21).
5. The mud-water balanced pipe jacking equipment according to claim 4, characterized in that: A support frame (13) is fixedly arranged on the inner wall of the mixing bin (12), a closed box (131) is fixedly arranged at the center of the support frame (13), and the first bevel gear (21) and the second bevel gear (22) are both located in the closed box (131).
6. The mud-water balanced pipe jacking equipment according to claim 5, characterized in that: A supporting boss (132) is fixedly provided on the supporting frame (13); the supporting boss (132) is located in the closed box (131); and the supporting boss (132) abuts against the large end side wall of the first bevel gear (21).
7. The mud-water balanced pipe jacking equipment according to claim 6, characterized in that: A thrust ball bearing (1321) is provided on the support boss (132), one side of the thrust ball bearing (1321) is fixedly connected to the side wall of the support boss (132), and the other side of the thrust ball bearing (1321) abuts against the large end side wall of the first bevel gear (21).
8. The mud-water balanced pipe jacking equipment according to claim 1, characterized in that: The cutting head (3) comprises a rotating disk (31), a crushing blade (32), and a propulsion blade (33); the rotating disk (31) is rotatably matched with the pipe jacking machine body (1); the inner side of the rotating disk (31) is coaxially fixed with the cutting motor (111); a plurality of mud inlet holes (34) are provided on the rotating disk (31); the crushing blade (32) is fixedly arranged at the center of the outer side of the rotating disk (31); and a plurality of propulsion blades (33) are fixedly arranged on the outer side of the rotating disk (31).