CN108086992B - Pumping and soil discharging system for underground construction - Google Patents
Pumping and soil discharging system for underground construction Download PDFInfo
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- CN108086992B CN108086992B CN201810071721.XA CN201810071721A CN108086992B CN 108086992 B CN108086992 B CN 108086992B CN 201810071721 A CN201810071721 A CN 201810071721A CN 108086992 B CN108086992 B CN 108086992B
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- 239000002689 soil Substances 0.000 title claims abstract description 134
- 238000005086 pumping Methods 0.000 title claims abstract description 71
- 238000010276 construction Methods 0.000 title claims abstract description 20
- 238000007599 discharging Methods 0.000 title claims abstract description 7
- 230000030279 gene silencing Effects 0.000 claims abstract description 10
- 239000010720 hydraulic oil Substances 0.000 claims description 31
- 238000007789 sealing Methods 0.000 claims description 25
- 230000009471 action Effects 0.000 claims description 14
- 238000012790 confirmation Methods 0.000 claims description 9
- 239000002893 slag Substances 0.000 claims description 5
- 239000000284 extract Substances 0.000 claims description 2
- 230000008878 coupling Effects 0.000 abstract description 5
- 238000010168 coupling process Methods 0.000 abstract description 5
- 238000005859 coupling reaction Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 11
- 239000003921 oil Substances 0.000 description 6
- 230000003584 silencer Effects 0.000 description 4
- 230000005641 tunneling Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000006424 Flood reaction Methods 0.000 description 1
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 210000004712 air sac Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
- E21D9/13—Devices for removing or hauling away excavated material or spoil; Working or loading platforms using hydraulic or pneumatic conveying means
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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)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a pumping-out soil system for underground construction, which comprises at least one pumping-out soil module; the pumping-out soil system comprises at least one pumping-out soil module; the pumping and discharging module comprises a main pumping device, a follow-up pipeline and a fixed pipeline; the main pumping device is connected between the follow-up pipeline and the spiral conveyor of the shield machine and is used for pumping dregs output by the spiral conveyor into the follow-up pipeline; the follow-up pipeline is connected with the fixed pipeline through a telescopic pipeline extension device; the fixed pipeline is connected with a silencing device and at least one group of force pumping devices in series. The invention has the advantages that: the coupling among all components in the pumping-out soil module is small, and a control system is simpler; the pumping system adopts a modularized design, and the capacity of the pumping system can be conveniently expanded by adjusting the number of the pumping out modules without replacing key equipment.
Description
Technical Field
The invention relates to a pumping-out soil system, in particular to a pumping-out soil system for underground construction.
Background
A large amount of dregs can be generated in the process of tunneling of the shield machine; in order to facilitate the conveying of the dregs, a part of shield construction projects adopt pipelines to pump the dregs to the ground; the pumping transportation mode has higher conveying efficiency, and can save the construction space in the tunnel. The conveying pump of the pumping and conveying system in the prior art is usually directly connected with the screw conveyor of the shield machine, but the soil output of the screw conveyor usually has larger fluctuation; in the pumping process, the conveying pump needs to be frequently regulated according to the soil output of the screw conveyor, so that strong coupling exists between a control system of the conveying pump and a complex shield tunneling machine control system, and the residue soil pumping system in the prior art is difficult to stably work.
Disclosure of Invention
The object of the present invention is to provide a pump-out system for underground construction, which achieves decoupling of the control system by using a buffer soil box, in accordance with the above-mentioned disadvantages of the prior art.
The invention is realized by the following technical scheme:
a pump out soil system for use in subterranean construction, the pump out soil system comprising at least one pump out soil module; the pumping and discharging module comprises a main pumping device, a follow-up pipeline and a fixed pipeline; the main pumping device is connected between the follow-up pipeline and the spiral conveyor of the shield machine and is used for pumping dregs output by the spiral conveyor into the follow-up pipeline; the follow-up pipeline is connected with the fixed pipeline through a telescopic pipeline extension device; the fixed pipeline is connected with a silencing device and at least one group of force pumping devices in series.
The main pumping device and the relay pumping device comprise a buffer soil box and a delivery pump; the top of the buffer soil box is provided with a residue soil inlet, and the bottom of the buffer soil box is connected with the conveying pump; the buffer soil box is provided with an earth pressure gauge, and when the earth pressure in the buffer soil box is greater than a preset value, the conveying pump extracts dregs from the inside of the buffer soil box.
The conveying pump comprises a soil tank, a swinging pipe and two hydraulic suction devices; the soil groove is arranged at the bottom of the buffer soil box, is communicated with the buffer soil box and forms an integrated structure; the hydraulic suction device comprises a suction cylinder and a piston arranged inside the suction cylinder; the two hydraulic suction devices are arranged on the side surface of the soil tank side by side, and the end parts of the suction cylinders are fixedly connected with the openings of the side walls of the soil tank; the swing pipe is arranged in the soil tank, and the first end of the swing pipe is connected with the soil outlet of the conveying pump; the second end of the swing pipe is tightly attached to the inner surface of the soil tank, swings back and forth in the soil tank and is alternately connected with the ends of the two suction cylinders; the two hydraulic suction devices are used for alternately sucking the dregs from the soil tank and discharging the dregs out of the conveying pump through the swing pipe.
In the main pumping device, a muck inlet of the buffer soil box is connected with a soil outlet of the screw conveyor, and the soil outlet of the conveying pump is connected with the follow-up pipeline.
In the relay pumping device, a muck inlet of the buffer soil box is connected with the upper-level fixed pipeline, and a soil outlet of the conveying pump is connected with the secondary-level fixed pipeline.
The telescopic pipeline extension device comprises an inner sleeve and an outer sleeve; the first end of the inner sleeve is inserted into the outer sleeve through the first end of the outer sleeve; the outer side of the first end of the inner sleeve is provided with a sealing device and a limiting block; an annular limiting plate and a plurality of guide wheels are arranged at the first end of the outer sleeve, and the limiting plate and the limiting block are mutually matched to form a limiting structure; the guide wheel is tightly attached to the outer surface of the inner sleeve; the second end of the inner sleeve is connected with the follow-up pipeline through a flange; the second end of the outer sleeve is connected with the fixed pipeline through a flange.
The steering support is arranged below the inner sleeve and the outer sleeve, the bottom of the steering support is provided with the movable support, and the steering support is connected with the movable support through a vertical rotating shaft; the bottom of the movable support is provided with universal wheels.
The sealing device comprises a sealing ring fixing piece and a plurality of sealing rings; the sealing ring fixing piece is arranged on the outer surface of the inner sleeve in a surrounding mode and is fixedly connected with the inner sleeve; each sealing ring is distributed along the axial direction of the inner sleeve and is fixed on the side surface of the sealing ring fixing piece through a fixing rod; the sealing ring is tightly attached to the inner surface of the outer sleeve.
The silencing device comprises a slag soil conduit, a buffer tube, a hydraulic cylinder and an energy accumulator; the first end of the buffer tube is connected to the middle part of the muck guide tube, an action piston is arranged in the buffer tube, and a hydraulic cylinder for pushing the action piston is arranged at the second end of the buffer tube; the rear cavity of the hydraulic oil cylinder is connected with the energy accumulator through a hydraulic oil conduit; the energy accumulator comprises a shell and an air bag arranged in the shell, the shell is communicated with the hydraulic oil conduit, and high-pressure gas is filled in the air bag.
The action piston is connected with a working confirmation rod, and the tail end of the working confirmation rod extends out of the second end of the buffer tube; the hydraulic oil conduit is connected with a safety valve, and the safety valve is connected with a hydraulic oil collecting device.
The invention has the advantages that: the coupling among all components in the pumping-out soil module is small, and a control system is simpler; the pumping system adopts a modularized design, and the capacity of the pumping system can be conveniently expanded by adjusting the number of the pumping out modules without replacing key equipment.
Drawings
FIG. 1 is a top view of a pump out system for subterranean construction of the present invention;
FIG. 2 is a side view of a pumped-out soil system for subterranean construction according to the present invention;
FIG. 3 is a side view of a main pumping device of the present invention;
FIG. 4 is a top view of a transfer pump of the present invention;
FIG. 5 is another top view of the transfer pump of the present invention;
FIG. 6 is a side view of the telescoping line extension apparatus of the present invention in a contracted state;
FIG. 7 is a cross-sectional view taken at A-A of FIG. 6 in accordance with the present invention;
FIG. 8 is an enlarged view of a portion of the invention at B in FIG. 6;
FIG. 9 is a side view of the telescoping line extension apparatus of the present invention in an extended position;
FIG. 10 is a schematic view of a muffler device according to the present invention;
fig. 11 is a schematic view of the working principle of the silencer according to the present invention.
Description of the embodiments
The features of the present invention and other related features are described in further detail below by way of example in conjunction with the following drawings, to facilitate understanding by those skilled in the art:
as shown in fig. 1-11, reference numerals 1-44 are respectively: the hydraulic oil pumping device comprises a pumping-out module 1, a main pumping device 2, a follow-up pipeline 3, a fixed pipeline 4, a shield machine 5, a screw conveyor 6, a telescopic pipeline extension device 7, a silencing device 8, a relay pumping device 9, a buffer soil box 10, a conveying pump 11, a soil pressure gauge 12, a soil tank 13, a swinging pipe 14, a hydraulic pumping device 15a, a hydraulic pumping device 15b, a pumping cylinder 16a, a pumping cylinder 16b, a piston 17a, a piston 17b, a hydraulic oil cylinder 18, a relief valve 19, an access door 20, an inner sleeve 21, an outer sleeve 22, a sealing device 23, a limiting block 24, a limiting plate 25, a guide wheel 26, a universal wheel 27, a moving bracket 28, a steering bracket 29, a sealing ring fixing piece 30, a sealing ring 31, a fixing rod 32, a water injection device 33, a residue guide pipe 34, a buffer pipe 35, a hydraulic oil cylinder 36, an energy accumulator 37, an actuating piston 38, a hydraulic oil guide pipe 39, an air bag 40, a safety valve 41, an oil pressure gauge 42, a hydraulic oil collecting device 43 and a work confirmation rod 44.
Examples: as shown in fig. 1 and 2, the present embodiment relates in particular to a pump-out soil system for underground construction, which comprises at least one pump-out soil module 1; the pumping-out module 1 comprises a main pumping device 2, a follow-up pipeline 3 and a fixed pipeline 4; the pumping-out module 1 is connected with a screw conveyor 6 of the shield machine 5 and is used for pumping dregs output by the screw conveyor 6 to the ground; in the present embodiment, the number of the pumping-out modules 1 is two, however, the number of the pumping-out modules 1 is not limited to two, and a suitable number (one or more than two) may be selected according to the amount of the soil discharged by the screw conveyor 6 and the pumping capacity of the pumping-out modules 1; in this embodiment, the number of the pumping-out modules 1 is adjusted to adapt to different working condition parameters, the pumping-out modules 1 with the same structural model can be adopted in different shield machines, various components in the pumping-out modules 1 can be recycled, and the situation that various components in the pumping-out modules 1 need to be replaced when the working condition parameters change is avoided.
As shown in fig. 1 and 2, in the soil pumping-out module 1, a main pumping device 2 is connected between a follow-up pipeline 3 and a screw conveyor 6 of a shield machine 5, and the main pumping device 2 is used for pumping dregs output by the screw conveyor 6 into the follow-up pipeline 3; the follow-up pipeline 3 moves forwards along with the shield machine 5 and the screw conveyor 6 in the process of jacking the shield machine 5; in order to avoid the integral movement of the pipeline, a telescopic pipeline extension device 7 is arranged between the follow-up pipeline 3 and the fixed pipeline 4; the follow-up pipeline 3 is connected with the fixed pipeline 4 through a telescopic pipeline extension device 7; the fixed pipeline 4 is connected with a silencing device 8 and at least one group of force pumping devices 9 in series.
As shown in fig. 1, 3 and 4, in this embodiment, the main pumping device 2 and the relay pumping device 9 have the same structure; the structure of the buffer soil box and the conveying pump is shown in fig. 3 and 4, and the buffer soil box and the conveying pump comprise a buffer soil box 10 and a conveying pump 11; the top of the buffer soil box 10 is provided with a residue soil inlet, and the bottom of the buffer soil box 10 is connected with a conveying pump 11; the buffer soil box 10 is provided with an earth pressure gauge 12, and the earth pressure gauge 12 is used for detecting the earth pressure in the buffer soil box 10; when the soil pressure in the buffer soil box 10 is greater than a predetermined value, the transfer pump 11 pumps the muck from the inside of the buffer soil box 10 and pumps the muck into the secondary pipe. In the embodiment, the buffer soil box 10 is adopted for temporarily storing the dregs, and meanwhile, the conveying pump 11 is controlled by the conveying pump 11 according to the soil pressure in the buffer soil box 10, so that the whole pumping-out module 1 can be controlled in a segmented manner according to the setting position of the pumping device; meanwhile, the buffer soil box 10 can also enable the pumping-out soil module 1 to be controlled separately from the screw conveyor 6; the pumping parameters of each pumping device are only required to be regulated according to the soil pressure in the buffer soil box, so that the operation parameters of the conveying pump 11 of each pumping device do not need to be regulated according to the operation state of the whole pumping out module 1 in the operation process of each pumping device; the introduction of the buffer bin 10 can effectively reduce the coupling of the various sections of the pumped-out soil module 1, decoupling the complex control system into a simple subsystem.
As shown in fig. 3, 4, 5, in the present embodiment, the transfer pump 11 includes a soil tank 13, a swing pipe 14, and two hydraulic suction devices 15 (the hydraulic suction devices 15 are collectively referred to as hydraulic suction devices 15a and 15 b); the soil groove 13 is arranged at the bottom of the buffer soil box 10, is communicated with the buffer soil box and forms an integrated structure; the dregs in the buffer soil box 10 can be directly dropped into the inside of the soil tank 13.
As shown in fig. 3, 4 and 5, the hydraulic suction devices 15 are arranged outside the soil tank 13, and two hydraulic suction devices 15 are arranged side by side on the side surface of the soil tank 13; the hydraulic suction device 15 includes a suction cylinder 16 (suction cylinder 16 is a generic term of suction cylinder 16a and suction cylinder 16 b) and a piston 17 (piston 17 is a generic term of piston 17a and piston 17 b) provided inside the suction cylinder 16, the piston 17 being driven by a hydraulic cylinder 18; the end of the suction cylinder 16 is fixedly connected with the opening of the side wall of the soil tank 13, and the dregs inside the soil tank 13 can enter the suction cylinder 16 through the opening of the side wall of the soil tank 13.
As shown in fig. 3, 4 and 5, a swinging pipe 14 is arranged in the soil tank 13, and a first end of the swinging pipe 14 is connected with a soil outlet of the conveying pump 11; the second end of the swing pipe 14 is closely attached to the inner surface of the soil tank 13; the swing pipe 14 is connected with a hydraulic driving mechanism (not shown in the figure), and the second end of the swing pipe 14 can swing back and forth in the soil tank 13 under the driving of the hydraulic driving mechanism and is alternately connected with the ends of the two suction cylinders 16.
As shown in fig. 3, 4 and 5, during operation of the transfer pump 11, two hydraulic suction devices 15 are used to alternately draw the dregs from the soil tank 13 and to discharge the dregs out of the transfer pump 11 through the swing pipe 14; specifically, as shown in the state of fig. 4, the piston 17a of the hydraulic suction device 15a is drawing the dregs from the soil tank 13; at the same time, the swing pipe 14 is connected to the end of the suction cylinder 16b of the other hydraulic suction device 15b, the movement direction of the piston 17b is opposite to that of the piston 17a, and the piston 17b pushes the dregs in the suction cylinder 16b into the swing pipe 14; after the dregs in the suction cylinder 16b are discharged, the swing pipe 14 moves to the other suction cylinder 16a to enter a state shown in fig. 5, and the working states of the two hydraulic suction devices 15 are completely opposite to the state shown in fig. 4; the above-described process is repeated continuously during the operation of the transfer pump 11.
As shown in fig. 3, a relief valve 19 and an access door 20 are further provided on the side surface of the buffer soil box 10; when the soil pressure in the buffer soil box 10 is too large, the pressure relief valve 19 is opened to discharge the dregs in the buffer soil box 10 so as to avoid the damage of the buffer soil box 10; when foreign matter which is difficult to be discharged, such as reinforcing steel bars, broken stones, etc., is mixed into the buffer soil box 10, the access door can be opened, and the foreign matter can be taken out; the delivery pump 11 is connected with an oil tank, a control cabinet and a motor pump set.
As shown in fig. 3, in the main pumping device 2, a muck inlet of the buffer tank 10 is connected to a muck outlet of the screw conveyor 6, and a muck outlet of the transfer pump 11 is connected to the follow-up pipe 3.
As shown in fig. 1 and 2, in the relay pumping device 9, a muck inlet of a buffer soil box 10 is connected with an upper-level fixed pipeline 4, and a soil outlet of a delivery pump 11 is connected with a secondary-level fixed pipeline 4; the relay pumping device 9 can overcome the pipeline resistance and effectively increase the pumping distance of the pumping-out soil module 1; the setting interval of the relay pumping device 9 can be determined according to the pumping capacity of the relay pumping device 9, the resistance of the pipeline and the characteristic parameters of the residue soil; by arranging the relay pumping device 9 reasonably, long-distance muck pumping can be achieved.
As shown in fig. 6, 7 and 8, the shield machine 5 continuously pushes forward in the construction process, and in order to avoid the synchronous movement of the whole pipeline along with the shield machine, a telescopic pipeline extension device 7 is introduced in the embodiment; the telescopic pipeline extension 7 comprises an inner sleeve 21 and an outer sleeve 22; the first end of the inner sleeve 21 is inserted inside the outer sleeve 22 via the first end of the outer sleeve 22; the outer side of the first end of the inner sleeve 21 is provided with a sealing device 23 and a limiting block 24; an annular limiting plate 25 and two guide wheels 26 are arranged at the first end of the outer sleeve 22, and the limiting plate 25 and the limiting block 24 are mutually matched to form a limiting structure; the guide wheel 26 is closely attached to the surface of the inner sleeve 21; the second end of the inner sleeve 21 is connected with the follow-up pipeline 3 through a flange; the second end of the outer sleeve 22 is connected to the fixed pipeline 4 by means of a flange.
As shown in fig. 6, in this embodiment, steering brackets 29 are disposed below the inner sleeve 21 and the outer sleeve 22, a moving bracket 28 is disposed below each steering bracket 29, and the steering brackets 29 are mounted on top of the moving brackets 28 through a vertical rotating shaft; the bottom of the movable bracket 28 is provided with a universal wheel 27; in the process of axially moving the inner sleeve 21 and the outer sleeve 22, the moving support 28 moves synchronously therewith, and when the moving support 28 is inconsistent with the moving direction of the inner sleeve 21 or the outer sleeve 22, the moving support 28 applies side load to the pipeline to deform and damage the pipeline can be avoided by arranging the steering support 29.
As shown in fig. 6 and 8, the sealing device 23 comprises a sealing ring fixing piece 30 and a plurality of sealing rings 31; in the present embodiment, the number of the seal rings 31 is five, and the seal ring fixing pieces 30 are circumferentially arranged on the outer surface of the inner sleeve 21 and fixedly connected with the inner sleeve 21; each seal ring 31 is distributed along the axial direction of the inner sleeve 21 and is fixed on the side surface of the seal ring fixing piece 30 through a fixing rod 32; in this embodiment, the sealing ring 31 is made of rubber; there is a certain amount of compression between the sealing ring 31 and the inner surface of the outer sleeve 22 so that the two are in close fit.
As shown in fig. 6 and 8, the inner sleeve 21 is connected with the follow-up pipeline 3, and the outer sleeve 22 is connected with the fixed pipeline 4; during the jacking process of the shield tunneling machine 5, the inner sleeve 21 synchronously moves forward along with the shield tunneling machine 5 and the follow-up pipeline 3; during this process, the inner sleeve 21 is gradually withdrawn from the outer sleeve 22 until the state shown in fig. 9; in the state shown in fig. 9, the stopper 24 touches the inner surface of the stopper plate 25; at this time, the inner tube 21 cannot be pulled out continuously, so that the fixed pipeline 4 needs to be lengthened; in the process of lengthening the fixed pipeline 4, the flange connection between the outer sleeve 22 and the fixed pipeline 4 is firstly disconnected, and then the outer sleeve is pushed towards the direction of the inner sleeve 21; after the pushing is finished, a new pipe section of the fixed pipeline 4 is connected between the original fixed pipeline 4 and the second end of the outer sleeve 22; the state of the telescopic pipe extension 7 after the installation of the new pipe section is shown in fig. 6.
As shown in fig. 1 and 2, in this embodiment, the fixed pipeline 4 is formed by splicing a plurality of pipe sections section by section; all the pipe joints are connected through flanges; the fixed pipeline 4 comprises a horizontal section and a vertical ascending section, the horizontal section is arranged in the shield tunnel, and the vertical ascending section is arranged in a vertical shaft at the tail end of the shield tunnel; one end of the horizontal section is connected with a telescopic pipeline extension device 7, the other end of the horizontal section is connected with a vertical lifting section through a silencing device 8, and the tail end of the vertical lifting section extends to the ground; at least one group of water injection devices 33 are connected in series in the horizontal section; the water injection device 33 is used for injecting water to the muck in the fixed pipeline 4 so as to keep the muck flowing for pumping.
As shown in fig. 10 and 11, the reciprocating action of the pumping device can generate pulse impact force; when the dregs are discharged from the fixed pipeline 4, larger noise can be generated under the action of pulse impact force; in addition, the impulse impact force can also cause the slag soil to generate larger impact force on the turning part of the fixed pipeline; in order to solve the above-described problems, the present embodiment incorporates a muffler device 8; the silencing device 8 comprises a residue soil conduit 34, a buffer tube 35, a hydraulic cylinder 36 and an accumulator 37; the first end of the buffer tube 35 is connected to the middle part of the muck guide tube 34, an action piston 38 is arranged in the buffer tube 35, and a hydraulic cylinder 36 for pushing the action piston 38 is arranged at the second end of the buffer tube 35; the rear cavity of the hydraulic cylinder 36 is connected with an accumulator 37 through a hydraulic oil conduit 39; the accumulator 37 comprises a housing, which communicates with a hydraulic oil conduit 39, and an air bag 40, which is arranged in the housing, the air bag 40 being filled with high-pressure gas.
As shown in fig. 10 and 11, the residue soil pipe 34 is connected in series in the fixed pipeline 4, and the diameter of the residue soil pipe is the same as that of the fixed pipeline 4; buffer tube 35 is inclined to the inlet of muck conduit 34 at an angle of between 40 ° and 60 °; the muck duct 34 serves as a body of the muffler device 8 for receiving impact force and mounting other components.
As shown in fig. 10 and 11, when the impulse impact force of the muck reaches the silencer 8, a part of the muck floods into the buffer tube 35, the impact force of the muck acts on the action piston 38, and the action piston 38 is pushed towards the second end of the buffer tube 35, and in the process, the impact force of the muck is greatly weakened; simultaneously, the hydraulic cylinder 36 positioned at the other side of the action piston 38 continuously contracts, and hydraulic oil in a rear cavity of the hydraulic cylinder 36 continuously flows out; hydraulic oil flows into the accumulator 37 via the hydraulic oil conduit 39; under the action of the dregs, the hydraulic oil in the accumulator 37 is continuously increased, and simultaneously, the hydraulic oil continuously compresses the air bag 40; under normal conditions, the air pressure in the air bladder 40 will reach equilibrium with the oil pressure in the hydraulic cylinder 36; the pressure of the slag is then reduced, the bladder 40 forces hydraulic oil out of the accumulator 37, and the hydraulic ram 36 pushes the actuating piston 38 against the first end of the buffer tube 35 under the influence of the hydraulic oil to await the next pulse impact of the slag.
The above-mentioned working condition is the normal working condition of the muffler device 8, but when the impact force of the dregs is too large, the oil pressure of the hydraulic oil may be greater than the pressure-bearing limit of the accumulator 37 and the hydraulic cylinder 36; to solve this problem, a relief valve 41 and an oil pressure gauge 42 are provided in the hydraulic oil conduit 39 in the present embodiment; the safety valve 41 is connected with a hydraulic oil collecting device 43; the safety valve 41 is a normally closed valve, and when the oil pressure of the hydraulic oil is greater than a safety threshold value, the safety valve 41 is opened, and the redundant hydraulic oil in the hydraulic oil conduit 39 flows into the hydraulic oil collecting device 43, so that the silencing device 8 can work under a safe working condition.
As shown in fig. 10 and 11, in order to visually show the state of the muffler 8 during operation, the operation piston 38 is provided with an operation confirmation rod 44; the end of the job confirmation rod 44 extends from the second end of the buffer tube 35; during the operation of the silencer 8, the operation confirmation rod 44 can reciprocate along with the operation piston 38, and the constructor can judge the operation state of the silencer 8 according to the frequency and the amplitude of the operation confirmation rod 44.
The beneficial technical effects of this embodiment are: the coupling among all components in the pumping-out soil module is small, and a control system is simpler; the pumping system adopts a modularized design, and can be conveniently expanded by adjusting the pumping out module without replacing key equipment.
Claims (8)
1. A pumped-out soil system for use in subterranean construction, characterized by: the pumping-out soil system comprises at least one pumping-out soil module; the pumping and discharging module comprises a main pumping device, a follow-up pipeline and a fixed pipeline; the main pumping device is connected between the follow-up pipeline and the spiral conveyor of the shield machine and is used for pumping dregs output by the spiral conveyor into the follow-up pipeline; the follow-up pipeline is connected with the fixed pipeline through a telescopic pipeline extension device; the fixed pipeline is connected with a silencing device and at least one group of force pumping devices in series;
the main pumping device and the relay pumping device comprise a buffer soil box and a delivery pump; the top of the buffer soil box is provided with a residue soil inlet, and the bottom of the buffer soil box is connected with the conveying pump; the buffer soil box is provided with an earth pressure gauge, and when the earth pressure in the buffer soil box is greater than a preset value, the conveying pump extracts dregs from the inside of the buffer soil box;
the conveying pump comprises a soil tank, a swinging pipe and two hydraulic suction devices; the soil groove is arranged at the bottom of the buffer soil box, is communicated with the buffer soil box and forms an integrated structure; the hydraulic suction device comprises a suction cylinder and a piston arranged inside the suction cylinder; the two hydraulic suction devices are arranged on the side surface of the soil tank side by side, and the end parts of the suction cylinders are fixedly connected with the openings of the side walls of the soil tank; the swing pipe is arranged in the soil tank, and the first end of the swing pipe is connected with the soil outlet of the conveying pump; the second end of the swing pipe is tightly attached to the inner surface of the soil tank, swings back and forth in the soil tank and is alternately connected with the ends of the two suction cylinders; the two hydraulic suction devices are used for alternately sucking the dregs from the soil tank and discharging the dregs out of the conveying pump through the swing pipe.
2. A pumped-out soil system for use in subterranean construction according to claim 1, wherein: in the main pumping device, a muck inlet of the buffer soil box is connected with a soil outlet of the screw conveyor, and the soil outlet of the conveying pump is connected with the follow-up pipeline.
3. A pumped-out soil system for use in subterranean construction according to claim 1, wherein: in the relay pumping device, a muck inlet of the buffer soil box is connected with the upper-level fixed pipeline, and a soil outlet of the conveying pump is connected with the secondary-level fixed pipeline.
4. A pumped-out soil system for use in subterranean construction according to claim 1, wherein: the telescopic pipeline extension device comprises an inner sleeve and an outer sleeve; the first end of the inner sleeve is inserted into the outer sleeve through the first end of the outer sleeve; the outer side of the first end of the inner sleeve is provided with a sealing device and a limiting block; an annular limiting plate and a plurality of guide wheels are arranged at the first end of the outer sleeve, and the limiting plate and the limiting block are mutually matched to form a limiting structure; the guide wheel is tightly attached to the outer surface of the inner sleeve; the second end of the inner sleeve is connected with the follow-up pipeline through a flange; the second end of the outer sleeve is connected with the fixed pipeline through a flange.
5. A pumped-out soil system for subterranean construction according to claim 4, wherein: the steering support is arranged below the inner sleeve and the outer sleeve, the bottom of the steering support is provided with the movable support, and the steering support is connected with the movable support through a vertical rotating shaft; the bottom of the movable support is provided with universal wheels.
6. A pumped-out soil system for subterranean construction according to claim 4, wherein: the sealing device comprises a sealing ring fixing piece and a plurality of sealing rings; the sealing ring fixing piece is arranged on the outer surface of the inner sleeve in a surrounding mode and is fixedly connected with the inner sleeve; each sealing ring is distributed along the axial direction of the inner sleeve and is fixed on the side surface of the sealing ring fixing piece through a fixing rod; the sealing ring is tightly attached to the inner surface of the outer sleeve.
7. A pumped-out soil system for use in subterranean construction according to claim 1, wherein: the silencing device comprises a slag soil conduit, a buffer tube, a hydraulic cylinder and an energy accumulator; the first end of the buffer tube is connected to the middle part of the muck guide tube, an action piston is arranged in the buffer tube, and a hydraulic cylinder for pushing the action piston is arranged at the second end of the buffer tube; the rear cavity of the hydraulic oil cylinder is connected with the energy accumulator through a hydraulic oil conduit; the energy accumulator comprises a shell and an air bag arranged in the shell, the shell is communicated with the hydraulic oil conduit, and high-pressure gas is filled in the air bag.
8. A pumped-out soil system for subterranean construction according to claim 7, wherein: the action piston is connected with a working confirmation rod, and the tail end of the working confirmation rod extends out of the second end of the buffer tube; the hydraulic oil conduit is connected with a safety valve, and the safety valve is connected with a hydraulic oil collecting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810071721.XA CN108086992B (en) | 2018-01-25 | 2018-01-25 | Pumping and soil discharging system for underground construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108457661B (en) * | 2018-01-25 | 2024-04-19 | 上海力行工程技术发展有限公司 | Silencer for pumping out soil system |
| CN108119158B (en) * | 2018-01-25 | 2024-04-19 | 上海力行工程技术发展有限公司 | Telescopic pipeline extension device for pumping out soil system |
| CN108049879B (en) * | 2018-01-25 | 2024-04-19 | 上海力行工程技术发展有限公司 | Pumping device for pumping out soil system |
| CN115108251B (en) * | 2021-03-19 | 2024-03-22 | 徐州中矿科光机电新技术有限公司 | Follow-up compensation chain conveyor |
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