CN112963163A - Earth pressure balance pipe jacking equipment and construction method thereof - Google Patents
Earth pressure balance pipe jacking equipment and construction method thereof Download PDFInfo
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- CN112963163A CN112963163A CN202110282809.8A CN202110282809A CN112963163A CN 112963163 A CN112963163 A CN 112963163A CN 202110282809 A CN202110282809 A CN 202110282809A CN 112963163 A CN112963163 A CN 112963163A
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- cutting
- jacking
- steel shell
- pressure balance
- conveying
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/10—Making by using boring or cutting machines
- E21D9/1006—Making by using boring or cutting machines with rotary cutting tools
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/10—Making by using boring or cutting machines
- E21D9/1086—Drives or transmissions specially adapted therefor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/028—Laying or reclaiming pipes on land, e.g. above the ground in the ground
- F16L1/036—Laying or reclaiming pipes on land, e.g. above the ground in the ground the pipes being composed of sections of short length
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The application discloses earth pressure balance pipe jacking equipment and a construction method thereof, which are applied to the field of pipe jacking construction, and the technical scheme is that the earth pressure balance pipe jacking equipment comprises a steel shell, wherein two ends of the steel shell are respectively provided with a cutting end and a jacking end, the jacking end is provided with an opening, a cutting motor is arranged on the inner wall of the cutting end, the output end of the cutting motor penetrates through the steel shell and is connected with a cutting rotating shaft, the tail end of the cutting rotating shaft is connected with a cutting disc, the diameter of the cutting disc is the same as the radius of the cutting end, the cutting rotating shaft is connected with the side end edge of the cutting disc, the outer side wall of the cutting disc is connected with a plurality of cutting columns, the lower end of the cutting end is provided with a mud outlet, the inner side of the mud outlet is connected with a conveying cylinder, the lower end outer wall of the conveying cylinder is provided with a discharge port; the method has the technical effect that when stones exist in the excavated surface, the stones can be cut off and discharged together with the slurry.
Description
Technical Field
The application relates to the technical field of pipe jacking construction, in particular to earth pressure balance pipe jacking equipment and a construction method thereof.
Background
The pipe jacking technology is a trenchless tunneling type pipeline laying construction technology for municipal construction, and has the advantages of no influence on the surrounding environment or smaller influence, small construction site and low noise. But also can be deeply operated underground, which is incomparable with the advantages of digging and burying pipes.
The existing push bench mainly comprises a steel shell, wherein a cutting convex strip disc and a mud discharging device are arranged in the steel shell, and a hydraulic propelling device and a grouting system are arranged outside the steel shell. Cutting the earth of excavation face through cutting sand grip dish, the rethread slip casting system carries out the slip casting to the cutting department, makes the earth under the cutting become mud, discharges mud through row mud device at last, again with the prefabricated tube coupling a lesson insert the section in. The steel shell bears external soil pressure and water pressure, so that the safety of internal equipment and operators is protected, and continuous cutting and propelling operation on an excavation face is facilitated.
In view of the above-described related art, the inventors have considered that there is a drawback that when a stone block is present in the excavated surface, it is difficult to cut it by the cutting ridge disk and discharge it together with the slurry.
Disclosure of Invention
In order to enable stones to be cut off and discharged together with slurry when the stones exist in the excavated earth surface, the application provides the earth pressure balance pipe jacking equipment and the construction method thereof.
In a first aspect, the present application provides a soil pressure balance pipe jacking equipment, adopts the following technical scheme: the utility model provides a balanced push pipe equipment of soil pressure, includes the box hat, the box hat sets up to the cylinder, the both ends of box hat set up to cutting end and jack end respectively, the jack end is the opening setting, the inner wall department of cutting end is provided with the cutting motor, the output of cutting motor passes the box hat and is connected with the cutting pivot, the end-to-end connection of cutting pivot has the circular shape cutting dish, the diameter of cutting dish is the same with the radius of cutting end, the cutting pivot is connected with the side end edge of cutting dish, be connected with a plurality of cutting posts on the lateral wall of cutting dish, the lower extreme department of cutting end is provided with the mud mouth, the inboard of mud mouth is connected with a conveying section of thick bamboo, the terminal outer wall lower extreme of conveying section of thick bamboo is provided with the discharge port, the discharge port department is provided with earth transfer device, the outside of jack end is provided.
Through above-mentioned technical scheme, the cutting dish just rotates in the scope of cutting end, and the cutting post on the cutting dish when contacting the pipe cross section of reaching the summit, the cutting post is smashed the soil and the stone in the soil layer of cutting end cross section within range pine, makes the cutting post can cut the stone in the soil layer off, and the stone can not cause the damage to the cutting post, and the soil and the stone that cut off can enter into a conveying section of thick bamboo and be conveyed away, make the stone in the soil cut off and discharge along with earth together.
The application is further configured to: the conveying device is characterized in that a grinding shaft is arranged in the conveying cylinder, the grinding shaft is arranged to be conical, the tip of the grinding shaft is arranged towards the mud outlet, a conveying motor is arranged at the tail end of the conveying cylinder, the output end of the conveying motor is connected with the tail end of the grinding shaft, a rotating thread convex strip which is spiral from the starting end to the tail end is arranged on the grinding shaft, a fixing thread convex strip which is in the same direction as the rotating thread convex strip is arranged on the inner wall of the conveying cylinder, and the fixing thread convex strip and the rotating thread convex strip are arranged in a staggered mode.
Through above-mentioned technical scheme, pulverize the axle and can play extruded effect to earth, pulverize the epaxial rotation screw thread sand grip of outer wall and can improve the pressure to stone in earth, fixed screw thread sand grip and rotation screw thread sand grip are mutually supported, roll crushing to the stone of mixing in earth, prevent that the stone card can't be conveyed out in the conveying cylinder.
The application is further configured to: the outer side of the conveying motor is connected with an adjusting cylinder, and a piston rod of the adjusting cylinder is connected with the outer wall of the tail end of the transmission motor.
Through above-mentioned technical scheme, when having the stone to block between the inner wall of crushing axle and a transfer cylinder, start actuating cylinder and make and crush axial mud outlet direction and remove, can make the crushing axle of stone card department and the interval grow of transfer cylinder inner wall, reach the dead effect of anti-sticking.
The application is further configured to: go out mud department and be provided with guiding device, guiding device is including supporting a section of thick bamboo, it has the connecting plate to support a section of thick bamboo inner wall connection, the end of connecting plate is rotated and is connected with the axis of rotation, the one end of axis of rotation is connected with and impels the blade, the other end of axis of rotation is connected with the initiating terminal that pulverizes the axle.
Through above-mentioned technical scheme, can play the effect of support to grinding the axle through supporting a section of thick bamboo, when impelling the blade and rotate, can promote the earth in the conveying section of thick bamboo to the discharge port direction simultaneously for the delivery rate to earth.
The application is further configured to: the edge of the cutting end of the steel shell is connected with a trimming ring, and the cross section of the tail end of the trimming ring is gradually reduced in shape and size.
Through the technical scheme, the trimming ring can support soil outside the soil layer to be cut, so that the soil outside the cut soil layer is prevented from loosening and falling off when the cutting column is used for cutting the soil layer, and the stability of the prefabricated pipe joint jacking pipe is ensured.
The application is further configured to: the length of the trimming ring is greater than the total length of the cutting rotating shaft and the cutting column, the inner diameter of the trimming ring is smaller than the diameter of the cutting end, and the inner wall of the trimming ring is provided with a limiting ring groove.
Through above-mentioned technical scheme, during spacing annular was inserted to the edge of cutting dish, played spacing effect to the cutting dish through spacing annular, made the cutting dish more stable at the pivoted in-process.
The application is further configured to: and a mud scraping plate is arranged at the edge of the side end of the cutting disc, and the edge of the mud scraping plate is contacted with the inner wall of the limiting ring groove.
Through the technical scheme, when the mud scraping plate rotates along with the cutting disc, the mud scraping plate scrapes mud on the inner wall of the opposite limiting ring groove, so that the cutting disc can normally rotate.
The application is further configured to: the cutting column is set to be triangular pyramid, and the end of the cutting column is set in a sharp shape.
Through above-mentioned technical scheme, the triangular pyramid can improve the cutting ability to the soil layer when cutting post rotates along with the cutting dish, is difficult for being damaged by the stone in the earth simultaneously.
The application is further configured to: the soil transfer device comprises a transportation track, and a mud transportation vehicle is arranged on the transportation track.
Through above-mentioned technical scheme, can slide through the transportation track through transporting the mud car, with earth transportation department excavation department, the rethread crane pulls out the working well with transporting the mud car and emptys.
On the other hand, the construction method for the earth pressure balance jacking pipe adopts the following technical scheme:
s1: respectively digging a working well and a receiving well at two ends of the pre-jacking pipe area, hoisting a jacking device and a steel shell into the working well, pushing the steel shell to move to a jacking pipe fault through the jacking device, and starting a cutting motor, so that a cutting column is inserted into the jacking pipe fault to loosen soil at the jacking pipe fault;
s2: when the cutting column cuts the cross section, the guide device and the conveying cylinder are hung and installed, the conveying motor is started, soil at the excavated position is conveyed outwards through the conveying cylinder, stone blocks mixed in the soil can be ground in the conveying cylinder, the soil conveying position is excavated through the mud transporting vehicle, and the mud transporting vehicle is pulled out of a working well through a crane to be dumped;
s3: after the end face of the steel shell is dug, the prefabricated pipe sections are hung in a working well, the prefabricated pipe sections are abutted to the jacking end of the steel shell through a jacking device until the prefabricated pipe sections are completely inserted into the end face, the next prefabricated joint is jacked in by the same method, and after each prefabricated pipe section is inserted, a transportation track is laid on the inner wall of each prefabricated joint.
Through above-mentioned technical scheme, the stone in the cutting post can be with the soil layer is cut off. The soil and the stone that cut down can enter into a conveying section of thick bamboo, pulverize the axle and can make the soil in the conveying section of thick bamboo remove to the discharge port, can play extruded effect to soil simultaneously, pulverize the epaxial rotation screw thread sand grip of outer wall and can improve the pressure to stone in the soil to pulverize the stone in the soil, be convenient for carry out the conveying transportation.
To sum up, the beneficial technical effect of this application does:
1. the cutting disc rotates just in the range of the cutting end, the cutting column smashes soil and stones in soil layers in the range of the cross section of the cutting end, so that the cutting column can cut the stones in the soil layers, the cut soil and stones can enter the conveying cylinder to be conveyed away, and the stones in the soil are cut and discharged together with the soil;
2. the grinding shaft can extrude soil, the rotary threaded convex strips on the outer wall of the grinding shaft can improve the pressure on stones in the soil, and the fixed threaded convex strips and the rotary threaded convex strips are matched with each other to grind and crush the stones mixed in the soil;
3. when the propelling blade rotates, soil in the conveying cylinder is pushed towards the direction of the discharge port, so that the conveying speed of the soil is accelerated.
Drawings
FIG. 1 is a schematic structural view of the steel shell of this embodiment during pipe jacking;
FIG. 2 is a schematic structural view of the steel shell of the present embodiment;
fig. 3 is an overall sectional view of the present embodiment.
Description of the drawings, 1, steel shell; 2. cutting the motor; 4. a cutting disk; 5. a cutting post; 6. a transfer drum; 7. a hydraulic jack; 8. grinding the shaft; 9. a transfer motor; 10. rotating the threaded convex strips; 11. fixing the threaded convex strip; 12. an adjusting cylinder; 13. a support cylinder; 14. a connecting plate; 15. a rotating shaft; 16. a propulsion blade; 17. trimming the edge ring; 18. a limiting ring groove; 20. a transportation track; 21. a mud conveying vehicle; 22. a working well; 23. a receiving well; 24. and (5) prefabricating the pipe joint.
Detailed Description
The present application is described in further detail below with reference to the attached drawings.
Example (b):
referring to fig. 1 and 2, the earth pressure balance pipe jacking equipment disclosed by the application comprises a jacking device and a steel shell 1, wherein the jacking device is provided with a hydraulic jack 7. And respectively digging a working well 22 and a receiving well 23 at two ends of the pre-jacking pipe area, hoisting a hydraulic jack 7 and the steel shell 1 into the working well 22, and installing and fixing the hydraulic jack 7 at the opposite surface of the section of the jacking pipe. The steel shell 1 is set to be cylindrical, one end, close to the section of the jacking pipe, of the steel shell 1 is set to be a cutting end, and one end, close to the hydraulic jack 7, of the steel shell 1 is set to be a jacking end.
Referring to fig. 2 and 3, the jacking end is open, a cutting motor 2 is fixed on the inner wall of the cutting end, the output end of the cutting motor 2 vertically penetrates through the steel shell 1, and the tail end of the output end of the cutting motor 2 is connected with a cutting rotating shaft. The tail end of the cutting rotating shaft is vertically connected with a circular cutting disc 4, the outer side wall of the cutting disc 4 is vertically connected with a plurality of cutting columns 5, and the cutting rotating shaft and the edge of the side end of the cutting disc 4 are welded and fixed.
Referring to fig. 2 and 3, the cutting motor 2 is operated to rotate the cutting spindle, thereby rotating the cutting disk 4 about the cutting spindle. The diameter of the cutting disk 4 is the same as the radius of the cutting end, so that the cutting disk 4 just rotates in the range of the cutting end, and when the cutting column 5 on the cutting disk 4 contacts the cross section of the top pipe, soil layers in the range of the cross section of the cutting end can be cut and loosened. Cutting post 5 sets up to the triangular pyramid, improves cutting post 5 and to the cutting ability of soil layer when rotating along with cutting dish 4, is difficult for being damaged by the stone in the earth simultaneously. The tail end of the cutting column 5 is arranged in a sharp shape, so that the cutting column 5 can be more conveniently inserted into a soil layer when the hydraulic jack 7 jacks the steel shell 1.
Referring to fig. 1 and 2, a cut hole is formed by jacking the steel shell 1 into the top pipe section, after the steel shell 1 is dug into the end face, the prefabricated pipe section 24 is hoisted into the working well 22, and the prefabricated pipe section 24 is jacked into the top pipe section by the hydraulic jack 7. Until the prefabricated pipe section 24 is fully inserted into the end face, the next prefabricated joint is driven in the same way until the steel shell 1 is advanced into the receiving well 23.
Referring to fig. 2 and 3, a mud outlet is provided at the lower end of the cutting end, and a conveying cylinder 6 is connected to the inner side of the mud outlet, so that the cut mud can enter the conveying cylinder 6 through the mud outlet for conveying. A grinding shaft 8 is arranged in the conveying cylinder 6, one end of the grinding shaft 8, which is close to the mud outlet, is set as a starting end, and a rotary threaded convex strip 10 which is screwed from the starting end to the tail end is arranged on the grinding shaft 8. The end of a conveying cylinder 6 is provided with a conveying motor 9, the output end of the conveying motor 9 is connected with the end of a grinding shaft 8, when the conveying motor 9 works to drive the grinding shaft 8 to rotate, a rotating thread raised line 10 on the outer wall of the grinding shaft 8 can play a role in pushing the soil entering the conveying cylinder 6 to the end of a sound transmission cylinder. The lower end of the outer wall of the tail end of the conveying cylinder 6 is provided with a discharge port, so that the soil can be discharged out of the conveying cylinder 6 through the discharge port.
Referring to fig. 2 and 3, the grinding shaft 8 is formed in a tapered shape, the starting end of the grinding shaft 8 is formed in a pointed end, the grinding shaft 8 serves to press soil while moving the soil in the transfer cylinder 6 to the discharge port, and the rotating screw thread protrusions 10 on the outer wall of the grinding shaft 8 increase the pressure of the soil against rocks, thereby grinding the rocks in the soil. Be provided with on the inner wall of conveying cylinder 6 with the fixed screw thread sand grip 11 of rotation screw thread sand grip 10 syntropy, fixed screw thread sand grip 11 sets up with rotation screw thread sand grip 10 is crisscross, and fixed screw thread sand grip 11 and rotation screw thread sand grip 10 are mutually supported, roll the stone of mixing in earth and smash, prevent that the stone card can't be conveyed out in conveying cylinder 6.
Referring to fig. 1 and 3, a soil transfer device is arranged at the discharge port, the soil transfer device comprises a transportation rail 20, the transportation rail 20 is laid at the bottom end of the inner wall of the prefabricated pipe section 24, and the tail end of the transportation rail 20 extends to the outer side of the section of the jacking pipe. The transport track 20 is provided with a mud conveying vehicle 21, soil and crushed stones are conveyed to the working well 22 through the mud conveying vehicle 21, and then the mud conveying vehicle 21 is lifted out of the working well 22 to be dumped. Each time a new prefabricated pipe section 24 is to be inserted, the conveyor track 20 needs to be extended so that the end of the conveyor track 20 is guaranteed to extend outside the top pipe section, thereby ensuring that the mud trucks 21 can slide through the conveyor track 20 into the working well 22.
Referring to fig. 2 and 3, a guiding device is arranged at the mud outlet, the guiding device includes a supporting cylinder 13, an outer wall of the supporting cylinder 13 is attached to an inner wall of the mud outlet, a connecting plate 14 is connected to the inner wall of the supporting cylinder 13, and a tail end of the connecting plate 14 extends to an axis of the supporting cylinder 13. The end of the connecting plate 14 is rotatably connected with a rotating shaft 15, and one end of the rotating shaft 15 is connected with a propelling blade 16. The other end of the rotating shaft 15 is connected to the starting end of the crushing shaft 8, so that the conveyor motor 9, when in operation, can drive the rotating shaft 15 to rotate and thus the propelling blades 16 to rotate. When the propelling blade 16 rotates, soil in the conveying cylinder 6 is pushed towards the discharge port, and the conveying speed of the soil is accelerated.
Referring to fig. 3, an adjusting cylinder 12 is fixed on the upper end of the outer side wall of the transfer drum 6 near the tail end, and a piston rod of the adjusting cylinder 12 is arranged towards the tail end of the transfer drum 6. The tail end of the adjusting cylinder 12 is vertically connected with a fixing plate, and the tail end of the conveying motor 9 is fixed on the fixing plate. There are stones between the crushing shaft 8 and the inner wall of the transfer cylinder 6 which get stuck and the transfer motor 9 is not operated. Starting the adjusting cylinder 12 to move the grinding shaft 8 to the mud outlet direction, the distance between the grinding shaft 8 where the stone blocks are stuck and the inner wall of the conveying cylinder 6 is increased, and the conveying motor 9 is reversed to move the stuck stone blocks to the mud outlet direction. Then the grinding shaft 8 is reset by adjusting the cylinder 12, and the transmission motor 9 is started to rotate positively to grind the stone again.
Referring to fig. 1 and 2, an outwardly extending deburring ring 17 is attached to the edge of the cutting end of the steel can 1, the deburring ring 17 being disposed coaxially with the steel can 1. The length of the trimming ring 17 is greater than the total length of the cutting rotating shaft and the cutting column 5, so that when the hydraulic jack 7 carries out pipe jacking on the steel shell 1, the tail end of the trimming ring 17 is firstly contacted with the section of the pipe jacking. The cross section of the tail end of the trimming ring 17 is gradually reduced in size, so that the trimming ring 17 can be more easily inserted into a soil layer on the section of the top pipe. The trimming ring 17 can support soil outside the soil layer to be cut, and the cutting column 5 is prevented from loosening and falling off the soil outside the cutting soil layer when cutting the soil layer, so that the cross section of the cutting hole is increased in shape and size, and the steel shell 1 and the later-stage inserted prefabricated pipe joint 24 cannot support the soil layer outside the cutting hole and easily cause collapse.
Referring to fig. 2 and 3, the outer diameter of the trimming ring 17 is 6mm larger than the diameter of the cutting end, so that the prefabricated pipe joint 24 can be inserted more conveniently at a later stage, the excessive friction force on the outer wall of the prefabricated pipe joint 24 is prevented when the prefabricated pipe joint 24 is ejected, and meanwhile, the road surface above the ejection pipe cannot be influenced by the clearance of 6 mm. The inner diameter of the trimming ring 17 is smaller than the diameter of the cutting end, the inner wall of the trimming ring 17 is provided with a limiting ring groove 18, so that the edge of the cutting disc 4 is inserted into the limiting ring groove 18, the limiting ring groove 18 is used for limiting the cutting disc 4, and the cutting disc 4 is more stable in the rotating process. A wiper is provided at the edge of the side end of the cutting disc 4, and when the cutting disc 4 rotates, the wiper rotates together with the cutting disc 4. The edge of the scraper contacts with the inner wall of the limiting ring groove 18, and when the scraper rotates along with the cutting disc 4, the scraper scrapes mud on the inner wall of the limiting ring groove 18, so that the cutting disc 4 can normally rotate, the mud is prevented from adhering to the limiting groove, and the effect of blocking the rotation of the cutting disc 4 is achieved.
The implementation principle of the embodiment is as follows: the outer side wall of the cutting disc 4 is vertically connected with a plurality of cutting columns 5, and the cutting columns 5 can cut off stones in soil layers. The soil and the stone that cut off can enter into the transfer cylinder 6, and crushing axle 8 can make the soil in the transfer cylinder 6 remove to the discharge port, can play extruded effect to soil simultaneously, and the rotation screw thread sand grip 10 on the outer wall of crushing axle 8 can improve the pressure to the stone in the soil to grind the stone in the soil.
The application also discloses a construction method of the earth pressure balance jacking pipe, which comprises the following steps:
s1: respectively digging a working well 22 and a receiving well 23 at two ends of the pre-jacking pipe area, hoisting a jacking device and a steel shell 1 into the working well 22, pushing the steel shell 1 to move to a jacking pipe fault through the jacking device, and starting a cutting motor 2, so that a cutting column 5 is inserted into the jacking pipe fault to loosen soil at the jacking pipe fault;
s2: when the cutting column 5 cuts the section, the guiding device and the conveying cylinder 6 are hung and installed, the conveying motor 9 is started, soil at the excavated position is conveyed outwards through the conveying cylinder 6, stone blocks mixed in the soil can be ground in the conveying cylinder 6, the excavated position of the soil is conveyed through the mud conveying vehicle 21, and the mud conveying vehicle 21 is pulled out of the working well 22 through a crane to dump;
s3: after the steel shell 1 is dug into the end face, the prefabricated pipe sections 24 are hung into the working well 22, the prefabricated pipe sections 24 are abutted to the jacking end of the steel shell 1 through the jacking device until the prefabricated pipe sections 24 are completely inserted into the end face, then the next prefabricated joint is jacked in the same way, and after each prefabricated pipe section 24 is inserted, the transportation track 20 is laid on the inner wall of each prefabricated joint.
The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The earth pressure balance pipe jacking equipment comprises a steel shell (1) and is characterized in that the steel shell (1) is arranged to be cylindrical, the two ends of the steel shell (1) are respectively arranged to be a cutting end and a jacking end, the jacking end is arranged in an opening mode, a cutting motor (2) is arranged on the inner wall of the cutting end, the output end of the cutting motor (2) penetrates through the steel shell (1) to be connected with a cutting rotating shaft, the tail end of the cutting rotating shaft is connected with a circular cutting disc (4), the diameter of the cutting disc (4) is the same as the radius of the cutting end, the cutting rotating shaft is connected with the side end edge of the cutting disc (4), a plurality of cutting columns (5) are connected onto the outer side wall of the cutting disc (4), a mud outlet is formed in the lower end of the cutting end, a conveying cylinder (6) is connected to the inner side of the mud outlet, a discharge port is formed in the lower end of the, and the discharging port is provided with a soil transferring device, and the outer side of the jacking end is provided with a jacking device.
2. The earth pressure balance push pipe equipment as claimed in claim 1, wherein a grinding shaft (8) is arranged in the conveying cylinder (6), the grinding shaft (8) is arranged in a conical shape, the tip of the grinding shaft (8) is arranged towards the mud outlet, a conveying motor (9) is arranged at the tail end of the conveying cylinder (6), the output end of the conveying motor (9) is connected with the tail end of the grinding shaft (8), a rotating thread convex strip (10) which is spiral from the starting end to the tail end is arranged on the grinding shaft (8), a fixed thread convex strip (11) which is in the same direction as the rotating thread convex strip (10) is arranged on the inner wall of the conveying cylinder (6), and the fixed thread convex strip (11) and the rotating thread convex strip (10) are arranged in a staggered manner.
3. The earth pressure balance pipe jacking equipment according to claim 1, wherein an adjusting cylinder (12) is connected to the outer side of the conveying motor (9), and a piston rod of the adjusting cylinder (12) is connected with the outer wall of the tail end of the transmission motor.
4. The earth pressure balance pipe jacking equipment as claimed in claim 2, wherein a guiding device is arranged at the mud outlet, the guiding device comprises a supporting cylinder (13), a connecting plate (14) is connected to the inner wall of the supporting cylinder (13), a rotating shaft (15) is rotatably connected to the tail end of the connecting plate (14), one end of the rotating shaft (15) is connected with a propelling blade (16), and the other end of the rotating shaft (15) is connected with the starting end of the crushing shaft (8).
5. The earth pressure balance pipe jacking equipment according to claim 1, wherein a trimming ring (17) is connected to the edge of the cutting end of the steel shell (1), and the cross section of the tail end of the trimming ring (17) is gradually reduced in size.
6. The earth pressure balance pipe jacking equipment according to claim 5, wherein the length of the trimming ring (17) is greater than the total length of the cutting rotating shaft and the cutting column (5), the inner diameter of the trimming ring (17) is smaller than the diameter of the cutting end, and the inner wall of the trimming ring (17) is provided with a limiting ring groove (18).
7. Soil pressure balance pipe jacking equipment according to claim 6, wherein at the side end edges of said cutting disc (4) there are arranged scrapers, the edges of which are in contact with the inner walls of the stop ring grooves (18).
8. The earth pressure balance pipe jacking equipment according to claim 1, wherein the cutting columns (5) are arranged as triangular pyramids, and the ends of the cutting columns (5) are arranged in a sharp shape.
9. The earth pressure balance pipe jacking equipment according to claim 1, wherein said earth transferring device comprises a transporting track (20), said transporting track (20) being provided with a mud transporting vehicle (21).
10. A construction method of earth pressure balance pipe jacking is applied to the earth pressure balance pipe jacking equipment of any one of claims 1-9, and is characterized by comprising the following steps:
s1: respectively digging a working well (22) and a receiving well (23) at two ends of a pre-jacking pipe area, hoisting a jacking device and a steel shell (1) into the working well (22), pushing the steel shell (1) to move to a jacking pipe fault through the jacking device, and starting a cutting motor (2), so that a cutting column (5) is inserted into the jacking pipe fault to loosen soil at the jacking pipe fault;
s2: when the cutting column (5) cuts the section, the guiding device and the conveying cylinder (6) are hung and installed, the conveying motor (9) is started, soil at the excavated position is conveyed outwards through the conveying cylinder (6), stone blocks mixed in the soil can be ground in the conveying cylinder (6), the excavated position of the soil is conveyed through the mud conveying vehicle (21), and the mud conveying vehicle (21) is pulled out of the working well (22) through a crane to dump;
s3: after the steel shell (1) is dug into the end face, the prefabricated pipe sections (24) are hung into a working well (22), the prefabricated pipe sections (24) are abutted to the jacking end of the steel shell (1) through a jacking device until the prefabricated pipe sections (24) are completely inserted into the end face, the next prefabricated joint is jacked into the steel shell in the same way, and after each prefabricated pipe section (24) is inserted, a conveying track (20) is laid on the inner wall of each prefabricated joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110282809.8A CN112963163B (en) | 2021-03-16 | 2021-03-16 | Earth pressure balance pipe jacking equipment and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110282809.8A CN112963163B (en) | 2021-03-16 | 2021-03-16 | Earth pressure balance pipe jacking equipment and construction method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112963163A true CN112963163A (en) | 2021-06-15 |
| CN112963163B CN112963163B (en) | 2022-12-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110282809.8A Active CN112963163B (en) | 2021-03-16 | 2021-03-16 | Earth pressure balance pipe jacking equipment and construction method thereof |
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| CN110424979A (en) * | 2019-08-26 | 2019-11-08 | 安徽建筑大学 | Simulate the indoor model conduit jacking of earth pressure balanced jacking construction |
| CN210034627U (en) * | 2019-05-24 | 2020-02-07 | 无锡威奥液压机电设备有限公司 | Muddy water and soil pressure balance type hydraulic pipe jacking machine |
| CN112065425A (en) * | 2020-09-17 | 2020-12-11 | 临沂市政集团有限公司 | Slurry balance type pipe jacking equipment and construction process thereof on sand and stone superposed layer |
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| CN2497043Y (en) * | 2001-07-17 | 2002-06-26 | 天津第二市政公路工程有限公司 | Replaceable earth-pressure balancing pipe-jacking entry-driving machine |
| CN202629334U (en) * | 2012-06-29 | 2012-12-26 | 中铁十六局集团北京轨道交通工程建设有限公司 | Three-dimensional hyperbolic steel push pipe construction system |
| CN104358927A (en) * | 2014-10-30 | 2015-02-18 | 国强建设集团有限公司 | Push pipe construction method and push pipe device |
| CN204212700U (en) * | 2014-10-30 | 2015-03-18 | 国强建设集团有限公司 | Drill bit in a kind of conduit jacking |
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| CN112963163B (en) | 2022-12-20 |
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