Earth pressure balance shield machine for pile foundation construction

Abstract

The utility model discloses an earth pressure balance shield machine for pile foundation construction, and relates to the technical field of pile foundation construction equipment. The device comprises a supporting base table, a penetrating opening is formed in one end of the supporting base table, a mounting table penetrates through the penetrating opening, a sleeve is rotatably connected to the bottom of the mounting table, an excavating head is fixedly connected to the bottom of the sleeve, a portal frame is fixedly connected to the top of the supporting base table, and a hydraulic push rod is fixedly connected to one end of the portal frame; lifting sliding grooves are symmetrically formed in one end of the portal frame. When the hydraulic push rod is started to drive the excavating head to excavate downwards in the length direction of the lifting sliding groove, soil blocks excavated by the excavating head are filled into the sleeve, and meanwhile, soil pressure is generated in the sleeve and acts on the surface of the sleeve in cooperation with thrust applied to the sleeve by the hydraulic push rod; and therefore, the soil pressure and the water pressure in the stratum form a balance state, the stability during pile foundation construction is effectively improved, and the problems that the soil layer collapses and formed holes are not vertical during pile foundation construction are solved.

Description

Technical Field

[0001] This application relates to the technical field of pile foundation construction equipment, and in particular to an earth pressure balance shield machine for pile foundation construction. Background Art

[0002] Pile foundation construction, as the cornerstone of the underground engineering system, has become increasingly prominent. Efficient and high-quality pile foundation construction is not only the key to ensuring the smooth progress of the project, but also the cornerstone for ensuring the safety, stability and durability of the entire structure. Currently, a variety of mechanical equipment has gathered in the field of pile foundation construction. Among them, rotary drilling rigs and impact drills, as the mainstream equipment, have occupied a place in the industry with their respective technical characteristics, jointly supporting the vast field of pile foundation construction.

[0003] Facing the complexity and challenges of pile foundation construction, existing technical equipment such as rotary drilling rigs and impact drills provide practical solutions for pile foundation construction through their unique working principles and structural designs. Rotary drilling rigs, with their efficient and accurate excavation capabilities, can quickly form holes under various geological conditions, effectively shortening the construction period; while impact drills, relying on their strong impact force and penetration power, show excellent performance in hard strata. The application of these technical equipment not only improves the mechanization level of pile foundation construction, but also lays a solid foundation for the improvement of project quality.

[0004] However, the existing pile foundation construction machinery on the market mainly includes rotary drilling rigs, impact drills, etc. Although these equipment can realize pile foundation construction, problems such as soil layer collapse and non-vertical hole formation are likely to occur during the construction process, affecting the quality of pile formation and construction efficiency. Summary of the Utility Model

[0005] The purpose of this application is to provide an earth pressure balance shield machine for pile foundation construction to solve the problems that the existing pile foundation construction machinery on the market mainly includes rotary drilling rigs, impact drills, etc., and problems such as soil layer collapse and non-vertical hole formation are likely to occur during the construction process, affecting the quality of pile formation and construction efficiency.

[0006] This application specifically adopts the following technical solutions to achieve the above purpose:

[0007] An earth pressure balance shield machine for pile foundation construction, comprising a support base. One end of the support base is provided with a through hole, and an installation platform is inserted into the through hole. The bottom of the installation platform is rotatably connected to a sleeve, and the bottom of the sleeve is fixedly connected to an excavation head. The top of the support base is fixedly connected to a gantry. One end of the gantry is fixedly connected to a hydraulic push rod. Symmetric lifting chutes are provided at one end of the gantry. A T-shaped transmission rod is slidably connected to the inside of the lifting chute, and the bottom of the T-shaped transmission rod is fixedly connected to the installation platform. A driving component for driving the excavation head to rotate is installed at one end of the installation platform. A lifting component for driving the excavation head to move along the length direction of the lifting chute is installed at one end of the gantry. A monitoring component is installed inside the sleeve, and a discharging mechanism is installed at one end of the installation platform.

[0008] By adopting the above technical solution, through the coordinated use of the monitoring component, the lifting component, the driving component, and the discharging mechanism, when the hydraulic push rod is started to drive the excavation head to dig downward along the length direction of the lifting chute, the soil blocks dug by the excavation head are filled into the sleeve. At the same time, with the thrust applied to the sleeve by the hydraulic push rod, soil pressure is generated inside the sleeve and acts on the surface of the sleeve, thus forming a balanced state with the soil pressure and water pressure in the formation. Furthermore, the stability during pile foundation construction is effectively improved, the problems of soil layer collapse and non-vertical hole formation during pile foundation construction are reduced, and the quality of pile formation and construction efficiency are improved.

[0009] Furthermore, the driving component includes an installation chamber opened inside the installation platform. A worm gear is rotatably connected to the inside of the installation chamber, a worm is rotatably connected to the inside of the installation chamber and meshes with the worm gear, a digging motor is fixedly connected to the inside of the installation chamber, and the output end of the digging motor is fixedly connected to the worm.

[0010] By adopting the above technical solution, through the coordinated use of the worm gear and the worm, starting the digging motor can drive the worm to mesh with the worm gear and drive the worm gear to rotate. At the same time, the worm gear drives the excavation head to rotate and cut the soil layer, improving the practicability of the device.

[0011] Furthermore, the lifting component includes a driving rack fixedly connected to one end of the gantry. The output end of the hydraulic push rod passes through the gantry and is rotatably connected to a lifting gear that meshes with the driving rack. One end of the T-shaped transmission rod is fixedly connected to a lifting rack that meshes with the lifting gear.

[0012] By adopting the above technical solution, through the combined use of the driving rack, the lifting gear and the lifting rack, starting the hydraulic push rod can push the lifting gear to mesh with the driving rack and the lifting rack synchronously, and push the lifting rack to drive the T-shaped transmission rod to move along the length direction of the lifting chute. This facilitates moving the T-shaped transmission rod along the length direction of the lifting chute while effectively extending the moving distance of the T-shaped transmission rod along the length direction of the lifting chute, improving the practicability of the device.

[0013] Further, the monitoring component includes a controller fixedly connected to one side of the gantry, a pressure sensor fixedly connected to the inner side of the sleeve, and the controller is electrically connected to the hydraulic push rod.

[0014] By adopting the above technical solution, through the combined use of the controller, the hydraulic push rod and the pressure sensor, it is convenient to control the ejection speed of the hydraulic push rod in real time according to the pressure data monitored by the pressure sensor, improving the practicability of the device.

[0015] Further, the discharging mechanism includes a discharging pipe fixedly connected to one end of the mounting table. The input end of the discharging pipe passes through the mounting table and communicates with the inside of the sleeve. The output end of the discharging pipe is fixedly connected with a pumping hose, the output end of the pumping hose is fixedly connected with a muck pump, and a lifting component is installed inside the discharging pipe.

[0016] By adopting the above technical solution, through the combined use of the lifting component, the muck pump and the pumping hose, it is convenient to start the muck pump and cooperate with the pumping hose to discharge the soil blocks sent into the discharging pipe by the lifting component from the inside of the pile foundation, further improving the practicability of the device.

[0017] Further, the lifting component includes a discharging auger rotatably connected inside the discharging pipe, a discharging motor fixedly connected to the top of the discharging pipe, and the output end of the discharging motor is fixedly connected to the discharging auger.

[0018] By adopting the above technical solution, through the combined use of the discharging auger and the discharging pipe, it is convenient to drive the discharging auger to rotate by starting the discharging motor and push the soil blocks inside the sleeve to move upward along the length direction of the discharging pipe, improving the practicability of the device.

[0019] Further, a plurality of crushing cutter heads are evenly rotatably connected to one end of the mounting table. One end of the worm gear is fixedly connected with a driving gear, and one end of the crushing cutter head extends into the installation bin and is fixedly connected with a driven gear meshing with the driving gear.

[0020] By adopting the above technical solution, by setting the cooperation of the driving gear and the driven gear, it is convenient to drive the cutting head to rotate while driving the cutting head to cut and break the soil blocks accumulated inside the sleeve, thereby effectively improving the fluidity of the soil blocks accumulated inside the sleeve and improving the discharging efficiency of the discharging mechanism.

[0021] Furthermore, one end of the mounting table is fixedly connected with a water injection pipe, one end of the water injection pipe passes through the mounting table and is communicated with the inside of the sleeve, an electromagnetic valve is arranged inside the water injection pipe, a humidity sensor is fixedly connected to the inner side of the sleeve, and the controller is electrically connected to the humidity sensor and the electromagnetic valve.

[0022] By adopting the above technical solution, by setting the cooperation of the humidity sensor and the electromagnetic valve, it is convenient for the water injection pipe to transport moisture into the sleeve, thereby adjusting the humidity of the soil blocks inside the sleeve, further improving the fluidity of the soil blocks inside the sleeve, and further improving the discharging efficiency of the discharging mechanism.

[0023] In summary, the present application includes at least one of the following beneficial effects:

[0024] 1. By setting the cooperation of the monitoring component, the lifting component, the driving component and the discharging mechanism, when the hydraulic push rod is started to drive the cutting head to dig downward along the length direction of the lifting chute, the soil blocks dug by the cutting head are filled into the sleeve. At the same time, with the thrust applied by the hydraulic push rod to the sleeve, a soil pressure is generated inside the sleeve and acts on the surface of the sleeve, so as to form an equilibrium state with the soil pressure and water pressure in the formation, thereby effectively improving the stability during pile foundation construction, reducing the problems of soil layer collapse and non-vertical hole formation during pile foundation construction, and improving the quality and construction efficiency of pile formation.

[0025] 2. By setting the cooperation of the driving rack, the lifting gear and the lifting rack, starting the hydraulic push rod can push the lifting gear to mesh with the driving rack and the lifting rack synchronously, and push the lifting rack to drive the T-shaped transmission rod to move along the length direction of the lifting chute, so as to facilitate driving the T-shaped transmission rod to move along the length direction of the lifting chute while effectively extending the moving distance of the T-shaped transmission rod along the length direction of the lifting chute and improving the practicability of the device.

[0026] 3. By setting the cooperation of the driving gear and the driven gear, it is convenient to drive the cutting head to rotate while driving the cutting head to cut and break the soil blocks accumulated inside the sleeve, thereby effectively improving the fluidity of the soil blocks accumulated inside the sleeve and improving the discharging efficiency of the discharging mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a three-dimensional structural schematic diagram of the device main body in the present application.

[0028] Figure 2 It is a schematic diagram of the connection structure between the mounting table and the sleeve in this application.

[0029] Figure 3 It is a schematic diagram of the internal structure of the mounting table in this application.

[0030] Description of the reference numerals:

[0031] 1. Support base; 2. Through hole; 3. Mounting table; 4. Sleeve; 5. Excavating head; 6. Gantry; 7. Hydraulic push rod; 8. Lifting chute; 9. T-shaped transmission rod; 10. Installation bin; 11. Worm gear; 12. Worm; 13. Excavating motor; 14. Driving rack; 15. Lifting gear; 16. Lifting rack; 17. Controller; 18. Pressure sensor; 19. Discharge pipe; 20. Suction hose; 21. Muck pump; 22. Discharge auger; 23. Discharge motor; 24. Crushing cutter head; 25. Driving gear; 26. Driven gear; 27. Water injection pipe; 28. Solenoid valve; 29. Humidity sensor. Detailed implementation manners

[0032] The following further describes this application in detail with reference to the Figures 1 - 3 accompanying drawings.

[0033] An embodiment of this application discloses an earth pressure balance shield machine for pile foundation construction.

[0034] Referring to Figures 1 - 3 , an earth pressure balance shield machine for pile foundation construction includes a support base 1. A through hole 2 is opened at one end of the support base 1. An installation table 3 is inserted into the inside of the through hole 2. The bottom of the installation table 3 is rotatably connected to a sleeve 4. The bottom of the sleeve 4 is fixedly connected to an excavating head 5. A gantry 6 is fixedly connected to the top of the support base 1. One end of the gantry 6 is fixedly connected to a hydraulic push rod 7. Lifting chutes 8 are symmetrically opened at one end of the gantry 6. A T-shaped transmission rod 9 is slidably connected to the inside of the lifting chutes 8. The bottom of the T-shaped transmission rod 9 is fixedly connected to the installation table 3. A driving assembly for driving the excavating head 5 to rotate is installed at one end of the installation table 3. A lifting assembly for driving the excavating head 5 to move along the length direction of the lifting chute 8 is installed at one end of the gantry 6. A monitoring assembly is installed inside the sleeve 4. A discharging mechanism is installed at one end of the installation table 3;

[0035] Among them, the driving assembly includes an installation bin 10 opened inside the installation table 3. A worm gear 11 is rotatably connected to the inside of the installation bin 10. A worm 12 meshing with the worm gear 11 is rotatably connected to the inside of the installation bin 10. An excavating motor 13 is fixedly connected to the inside of the installation bin 10. The output end of the excavating motor 13 is fixedly connected to the worm 12;

[0036] Moreover, the lifting assembly includes a driving rack 14 fixedly connected to one end of the gantry 6. The output end of the hydraulic push rod 7 passes through the gantry 6 and is rotatably connected with a lifting gear 15 meshing with the driving rack 14. One end of the T-shaped transmission rod 9 is fixedly connected with a lifting rack 16 meshing with the lifting gear 15;

[0037] Moreover, the monitoring assembly includes a controller 17 fixedly connected to one side of the gantry 6. A pressure sensor 18 is fixedly connected to the inner side of the sleeve 4. The controller 17 is electrically connected to the hydraulic push rod 7.

[0038] During use, first fix the support base 1 in the area to be excavated, and start the hydraulic push rod 7 to push the lifting gear 15 to move downward along the length direction of the lifting chute 8. At the same time, make the lifting gear 15 mesh with the driving rack 14 and the lifting rack 16, and cooperate with the lifting rack 16 to push the T-shaped transmission rod 9 to drive the mounting table 3 to move downward along the length direction of the lifting chute 8. Then start the excavation motor 13 to drive the worm 12 to mesh with the worm gear 11, and make the worm gear 11 drive the excavation head 5 and the sleeve 4 to rotate. At the same time, use the excavation head 5 to rotate and cut the soil mass, and collect the cut soil blocks into the inside of the sleeve 4. Then use the discharging mechanism to discharge the soil blocks collected inside the sleeve 4 out of the foundation pit;

[0039] At the same time, the pressure sensor 18 is set to monitor the pressure of the soil blocks inside the sleeve 4 in real time. When the pressure of the soil blocks inside the sleeve 4 exceeds the expectation, the controller 17 is set to control the hydraulic push rod 7 to slow down the propulsion speed to slow down the collection speed of the soil blocks inside the sleeve 4, thereby reducing the pressure of the soil blocks inside the sleeve 4. Then when the pressure of the soil blocks inside the sleeve 4 is lower than the expectation, the controller 17 is set to control the hydraulic push rod 7 to increase the propulsion speed to increase the pressure of the soil blocks inside the sleeve 4, so as to facilitate the use of the soil blocks cut by the excavation head 5 and the thrust applied by the hydraulic push rod 7 to the sleeve 4 to generate a soil pressure inside the sleeve 4 and act on the surface of the sleeve 4, thereby forming a balanced state with the soil pressure and water pressure in the formation, and effectively improving the stability during pile foundation construction, reducing the problems of soil layer collapse and non-vertical hole formation during pile foundation construction, and improving the quality and construction efficiency of pile formation.

[0040] Refer to Figures 1 - 3 As shown in [reference], the discharging mechanism includes a discharging pipe 19 fixedly connected to one end of the mounting table 3. The input end of the discharging pipe 19 passes through the mounting table 3 and is communicated with the inside of the sleeve 4. The output end of the discharging pipe 19 is fixedly connected with a pumping hose 20. The output end of the pumping hose 20 is fixedly connected with a muck pump 21. A lifting assembly is installed inside the discharging pipe 19;

[0041] Among them, the lifting assembly includes a discharging auger 22 rotatably connected inside the discharging pipe 19. The top of the discharging pipe 19 is fixedly connected with a discharging motor 23. The output end of the discharging motor 23 is fixedly connected with the discharging auger 22.

[0042] During use, start the discharging motor 23 to drive the discharging auger 22 to rotate, and make the discharging auger 22 push the soil blocks accumulated inside the sleeve 4 to move upward along the length direction of the discharging pipe 19. Then, start the muck pump 21 and cooperate with the pumping hose 20 to pump the soil blocks inside the discharging pipe 19 outwards, so as to facilitate the discharge of the soil blocks inside the sleeve 4 from the inside of the pile foundation, further improving the practicability of the device.

[0043] Refer to Figures 1 - 3 , one end of the mounting table 3 is evenly and rotatably connected with a plurality of crushing cutter heads 24. One end of the worm gear 11 is fixedly connected with a driving gear 25. One end of the crushing cutter head 24 extends into the installation bin 10 and is fixedly connected with a driven gear 26 meshing with the driving gear 25.

[0044] During use, when starting the excavation motor 13 to drive the worm gear 11 to drive the excavation head 5 to rotate, the worm gear 11 drives the driving gear 25 to mesh with a plurality of driven gears 26 synchronously. At the same time, the driven gear 26 drives the crushing cutter head 24 to rotate, so that the crushing cutter head 24 cuts and crushes the soil blocks accumulated inside the sleeve 4, effectively improving the fluidity of the soil blocks accumulated inside the sleeve 4 and the discharging efficiency of the discharging mechanism.

[0045] Refer to Figures 1 - 3 , one end of the mounting table 3 is fixedly connected with a water injection pipe 27. One end of the water injection pipe 27 passes through the mounting table 3 and is communicated with the inside of the sleeve 4. An electromagnetic valve 28 is arranged inside the water injection pipe 27. A humidity sensor 29 is fixedly connected to the inner side of the sleeve 4. The controller 17 is electrically connected to the humidity sensor 29 and the electromagnetic valve 28.

[0046] During use, the humidity sensor 29 is set to monitor the humidity of the soil blocks inside the sleeve 4 in real time. When the humidity of the soil blocks inside the sleeve 4 does not reach the predetermined value, the water injection pipe 27 is externally connected with a water supply hose, and the electromagnetic valve 28 is opened to convey water into the sleeve 4 through the water injection pipe 27, so as to adjust the humidity of the soil blocks inside the sleeve 4, further improving the fluidity of the soil blocks inside the sleeve 4, and further improving the discharging efficiency of the discharging mechanism.

[0047] The implementation principle of the earth pressure balance shield machine for pile foundation construction in this embodiment is as follows: First, fix the support base 1 in the area to be excavated, and drive the lifting gear 15 to move downward along the length direction of the lifting chute 8 by starting the hydraulic push rod 7. At the same time, make the lifting gear 15 mesh with the driving rack 14 and the lifting rack 16, and cooperate with the lifting rack 16 to push the T-shaped transmission rod 9 to drive the mounting table 3 to move downward along the length direction of the lifting chute 8. Then, drive the worm 12 to mesh with the worm gear 11 by starting the excavation motor 13, and make the worm gear 11 drive the excavation head 5 and the sleeve 4 to rotate. At the same time, use the excavation head 5 to rotate and cut the soil body, and collect the cut soil blocks into the inside of the sleeve 4;

[0048] At the same time, make the worm gear 11 drive the driving gear 25 to mesh with multiple driven gears 26 synchronously, and make the driven gears 26 drive the crushing cutter head 24 to rotate, so that the crushing cutter head 24 cuts and crushes the soil blocks accumulated inside the sleeve 4. Then, drive the discharge auger 22 to rotate by starting the discharge motor 23, and make the discharge auger 22 push the soil blocks accumulated inside the sleeve 4 to move upward along the length direction of the discharge pipe 19. Then, start the muck pump 21 and cooperate with the suction hose 20 to pump the soil blocks inside the discharge pipe 19 outwards;

[0049] Then, set the pressure sensor 18 to monitor the pressure of the soil blocks inside the sleeve 4 in real time. When the pressure of the soil blocks inside the sleeve 4 exceeds the expectation, control the hydraulic push rod 7 to slow down the propulsion speed through the set controller 17 to slow down the collection speed of the soil blocks inside the sleeve 4, thereby reducing the pressure of the soil blocks inside the sleeve 4. Then, when the pressure of the soil blocks inside the sleeve 4 is lower than the expectation, control the hydraulic push rod 7 to increase the propulsion speed through the set controller 17 to increase the pressure of the soil blocks inside the sleeve 4, so as to facilitate the use of the soil blocks cut by the excavation head 5 and the thrust applied to the sleeve 4 by the hydraulic push rod 7 to generate soil pressure inside the sleeve 4 and act on the surface of the sleeve 4, so as to form an equilibrium state with the soil pressure and water pressure in the formation.

Claims

1. An earth pressure balance shield machine for pile foundation construction, comprising a support base (1), characterized in that: One end of the support base (1) is provided with a through hole (2), an installation platform (3) is inserted into the interior of the through hole (2), a sleeve (4) is rotatably connected to the bottom of the installation platform (3), a digging head (5) is fixedly connected to the bottom of the sleeve (4), a gantry (6) is fixedly connected to the top of the support base (1), a hydraulic push rod (7) is fixedly connected to one end of the gantry (6), lifting sliding grooves (8) are symmetrically formed at one end of the gantry (6), a T-shaped transmission rod (9) is slidably connected to the interior of the lifting sliding grooves (8), the bottom of the T-shaped transmission rod (9) is fixedly connected to the installation platform (3), a driving assembly for driving the digging head (5) to rotate is installed at one end of the installation platform (3), a lifting assembly for driving the digging head (5) to move along the length direction of the lifting sliding grooves (8) is installed at one end of the gantry (6), a monitoring assembly is installed inside the sleeve (4), and a discharging mechanism is installed at one end of the installation platform (3).

2. The earth pressure balance shield machine for pile foundation construction according to claim 1, wherein: The driving assembly includes an installation chamber (10) formed inside the installation platform (3), a worm gear (11) is rotatably connected to the interior of the installation chamber (10), a worm (12) meshing with the worm gear (11) is rotatably connected to the interior of the installation chamber (10), a digging motor (13) is fixedly connected to the interior of the installation chamber (10), and the output end of the digging motor (13) is fixedly connected to the worm (12).

3. A soil pressure balance shield machine for pile foundation construction according to claim 1, characterized in that: The lifting assembly includes a driving rack (14) fixedly connected to one end of the gantry (6), the output end of the hydraulic push rod (7) passes through the gantry (6) and is rotatably connected to a lifting gear (15) meshing with the driving rack (14), and a lifting rack (16) meshing with the lifting gear (15) is fixedly connected to one end of the T-shaped transmission rod (9).

4. A soil pressure balance shield machine for pile foundation construction according to claim 1, characterized in that: The monitoring assembly includes a controller (17) fixedly connected to one side of the gantry (6), a pressure sensor (18) is fixedly connected to the inner side of the sleeve (4), and the controller (17) is electrically connected to the hydraulic push rod (7).

5. A soil pressure balance shield machine for pile foundation construction according to claim 1, characterized in that: The discharging mechanism includes a discharging pipe (19) fixedly connected to one end of the installation platform (3), the input end of the discharging pipe (19) passes through the installation platform (3) and is communicated with the interior of the sleeve (4), a pumping hose (20) is fixedly connected to the output end of the discharging pipe (19), a muck pump (21) is fixedly connected to the output end of the pumping hose (20), and a lifting assembly is installed inside the discharging pipe (19).

6. The earth pressure balance shield machine for pile foundation construction according to claim 5, characterized in that: The lifting assembly includes a discharging auger (22) rotatably connected to the interior of the discharging pipe (19), a discharging motor (23) is fixedly connected to the top of the discharging pipe (19), and the output end of the discharging motor (23) is fixedly connected to the discharging auger (22).

7. A soil pressure balance shield machine for pile foundation construction according to claim 2, characterized in that: A plurality of crushing cutter heads (24) are evenly and rotatably connected to one end of the installation platform (3), a driving gear (25) is fixedly connected to one end of the worm gear (11), and one end of the crushing cutter head (24) extends into the installation chamber (10) and is fixedly connected to a driven gear (26) meshing with the driving gear (25).

8. A soil pressure balance shield machine for pile foundation construction according to claim 4, characterized in that: One end of the installation table (3) is fixedly connected with a water injection pipe (27). One end of the water injection pipe (27) passes through the installation table (3) and is communicated with the inside of the sleeve (4). An electromagnetic valve (28) is arranged inside the water injection pipe (27). A humidity sensor (29) is fixedly connected to the inner side of the sleeve (4). The controller (17) is electrically connected to the humidity sensor (29) and the electromagnetic valve (28).

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