CN207161086U - A kind of abrasion reducing system of rectangular pipe jacking machine - Google Patents
A kind of abrasion reducing system of rectangular pipe jacking machine Download PDFInfo
- Publication number
- CN207161086U CN207161086U CN201720672714.6U CN201720672714U CN207161086U CN 207161086 U CN207161086 U CN 207161086U CN 201720672714 U CN201720672714 U CN 201720672714U CN 207161086 U CN207161086 U CN 207161086U
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- China
- Prior art keywords
- foam
- liquid
- mixing liquid
- flow
- gas
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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- 238000005299 abrasion Methods 0.000 title claims abstract description 24
- 239000007788 liquid Substances 0.000 claims abstract description 107
- 239000006260 foam Substances 0.000 claims abstract description 99
- 238000001514 detection method Methods 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 30
- 229910000278 bentonite Inorganic materials 0.000 claims description 26
- 239000000440 bentonite Substances 0.000 claims description 26
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 26
- 239000002689 soil Substances 0.000 claims description 18
- 238000005086 pumping Methods 0.000 claims description 16
- 238000009434 installation Methods 0.000 claims description 14
- 238000003860 storage Methods 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 11
- 238000001914 filtration Methods 0.000 claims description 10
- 230000005641 tunneling Effects 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000002347 injection Methods 0.000 description 9
- 239000007924 injection Substances 0.000 description 9
- 239000002002 slurry Substances 0.000 description 8
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The utility model provides a kind of abrasion reducing system of rectangular pipe jacking machine, including foam-generating device, the foam-generating device includes the first controller, gas supply assembly, foam mixing liquid conveying assembly and the gas-liquid mixed component for supply gas to be mixed with foam mixing liquid, the gas supply assembly includes being used for the first flowmeter for detecting supply gas flow and the flow valve for adjusting supply gas flow, the foam mixing liquid conveying assembly includes being used for the first delivery pump for conveying foam mixing liquid, first controller sends control instruction to flow valve and the first delivery pump respectively according to the detection signal of first flowmeter, the conveying capacity of control supply gas outflow amount and foam mixing liquid.The utility model is accurate, simple and reliable with controlling, and the advantages that service life.
Description
Technical field
It the utility model is related to push-bench technical field, more particularly to a kind of abrasion reducing system of rectangular pipe jacking machine.
Background technology
With the development of domestic underground engineering, subway gateway walkway and street underground pedestrian passageway be more and more at present
More use shield push-bench are constructed.It is existing because rectangular cross section is bigger by 20% or so than effective usable floor area of circular cross section
There is shield push-bench to cause tunnel utilization space economical rationality using rectangular cross section, but construction geology complexity be present, need to be to quarrel soil
The problem of being improved.Existing mode is to improve cutterhead abrasion and soil pressure performance, but existing rectangular pipe jacking machine using foam
Problems be present in abrasion reducing system：1st, foam-generating device uses closed-loop control, and Xu Ge roads are respectively provided with flow control feedback, and it is controlled
System is complicated, and foam has certain corrosivity, sets multiple traffic detector to require high to material corrosion resistance, cost is high；
2nd, in progradation, push-bench tube coupling and soil layer periphery wear are big, and equipment operational reliability and security are low.
Utility model content
The technical problems to be solved in the utility model is overcome the deficiencies in the prior art, there is provided one kind control is accurate, simple
Reliably, and the high rectangular pipe jacking machine of service life abrasion reducing system.
In order to solve the above technical problems, the utility model proposes technical scheme be：
A kind of abrasion reducing system of rectangular pipe jacking machine, including foam-generating device, the foam-generating device include the first control
Device, gas supply assembly, foam mixing liquid conveying assembly and the gas-liquid mixed group for supply gas to be mixed with foam mixing liquid processed
Part, the gas supply assembly include being used for the first flowmeter for detecting supply gas flow and the stream for adjusting supply gas flow
Valve is measured, the foam mixing liquid conveying assembly includes being used for the first delivery pump for conveying foam mixing liquid, first controller
Control instruction is sent to flow valve and the first delivery pump, control supply gas output according to the detection signal of first flowmeter respectively
The conveying capacity of flow and foam mixing liquid.
Further improvement as above-mentioned technical proposal：
The gas supply assembly also includes steam line, filtering pressure reducing valve and the pressure gauge for detecting supply gas pressure,
The pressure gauge, flow valve and first flowmeter are located at the downstream of the filtering pressure reducing valve on the steam line.
The foam mixing liquid conveying assembly also includes mixed liquor conveyance conduit and flow indicator, the flow indicator
On the mixed liquor conveyance conduit, and positioned at the downstream of first delivery pump.
Be equipped with steam line and the mixed liquor conveyance conduit for control pipeline break-make stop valve and prevent gas
The check valve that liquid flows backwards.
The foam-generating device also includes foam mixing liquid and produces component, and the foam mixing liquid, which produces component, includes the
Two controllers, water supplying unit, foam dope supply unit and the mixed liquor generation unit for foam dope to be mixed with water, institute
Stating water supplying unit includes being used for the second flowmeter for detecting water-carrying capacity, and the foam dope supply unit includes conveying foam dope
The second delivery pump, the second controller sends control instruction to the second delivery pump according to the detection signal of second flowmeter,
Control the conveying capacity of foam dope.
The water supplying unit also includes water supply line, and the foam dope supply unit also includes liquid delivery pipeline, institute
State water supply line to connect with mixed liquor generation unit by connecting pipe with liquid delivery pipeline, the connecting pipe, which is provided with, to be used
In the filter filtered to foam mixing liquid.
The ball valve of control pipeline break-make is equipped with the water supply line and liquid delivery pipeline and prevents what liquid from flowing backwards
Check-valves, the check-valves are located at the downstream of ball valve.
The mixed liquor generation unit includes foams mix liquid storage tank and three groups of limits for detecting foam mixing liquid liquid level
Bit switch, limit switch described in three groups include preventing foams mix along what foams mix liquid storage tank side wall was sequentially arranged from top to bottom
The first liquid-level switch that hydrorrhea goes out, the second liquid-level switch for ensureing foams mix liquid storage tank storage normal level amount and prevent first
3rd liquid-level switch of delivery pump free-runing operation.
Also include to bentonitic bentonite pumping installations is pumped between push-bench section of jurisdiction and soil layer, the bentonite pumps
Device is located at the middle shield of the push-bench, and positioned at the first half of the middle shield.
The bentonite pumping installations includes being radially injected hole along the middle shield first half circumferentially multiple, noted located at radial direction
Enter the flow-guiding channel at hole and the multiple flow guide bars of the shield first half circumferentially in flow-guiding channel interior edge, the flow-guiding channel
Shield to the direction of tail shield is set in, and the flow guide bar is parallel with the tunneling direction of rectangular pipe jacking machine.
Compared with prior art, the utility model has the advantage of：
The utility model is detected using flowmeter to supply gas flow, passes through the detection to gas flow and feedback
The accurate control of foam mixing liquid injection rate is realized, i.e. the injection rate of foam mixing liquid uses open loop with supply gas flow proportion
Control, and realized by the flowmeter of one group of detection air mass flow, it effectively prevent sets flow using closed-loop control Xu Ge roads
The situation of feedback is controlled, effectively reduces system complexity, control is simple and reliable；Meanwhile one group of flowmeter is set effectively to subtract
Replacement cost of the flowmeter under corrosive environment is lacked, service life of equipment is high.
The utility model further uses bentonite pumping installations, and bentonite slurry is pumped between section of jurisdiction and soil layer,
Lubrication and protective effect are played to shield body shell and soil layer, which further reduces abrasion of the tube coupling in progradation, effectively
Tube coupling is protected, improves the security and reliability of equipment operation, meanwhile, it can effectively fill pipe using bentonitic dilatancy
Piece gap, play a part of preventing stratum from loosening, support the solidification soil body.Bentonite pumping installations of the present utility model further wraps
Flow-guiding channel and flow guide bar are included, flow-guiding channel ensure that bentonite slurry shield in spreads to tail shield, serve to shield body shell
Protective effect；Meanwhile flow guide bar is parallel with the tunneling direction of rectangular pipe jacking machine, it is solidified using surface tension of liquid in mud
Diffusion of the preacceleration bentonite slurry between soil layer and shield body gap so that bentonite slurry is uniform between shield body shell and soil layer
Distribution, beneficial to subsequent construction.
Brief description of the drawings
The utility model will be hereinafter described in more detail based on embodiment and refer to the attached drawing.Wherein：
Fig. 1 is the structural representation of the utility model foam-generating device.
Fig. 2 is the structural representation that the utility model foam mixing liquid produces component.
Fig. 3 is the structural representation of the utility model bentonite pumping installations in a particular application.
Fig. 4 is the enlarged diagram in Fig. 3 A portions.
Fig. 5 is the distribution schematic diagram of the utility model flow guide bar.
Each label represents in figure：
1st, gas supply assembly；11st, first flowmeter；12nd, flow valve；13rd, steam line；14th, filtering pressure reducing valve；15th, pressure
Table；2nd, foam mixing liquid conveying assembly；21st, the first delivery pump；22nd, mixed liquor conveyance conduit；23rd, flow indicator；3rd, gas-liquid
Electric hybrid module；4th, stop valve；5th, check valve；6th, foam mixing liquid produces component；61st, water supplying unit；611st, second flowmeter；
612nd, water supply line；613rd, pneumatic ball valve；62nd, foam dope supply unit；621st, the second delivery pump；622nd, stoste delivery pipe
Road；623rd, foam dope tank；624th, the 4th limit switch；63rd, mixed liquor generation unit；631st, foams mix liquid storage tank；632、
First liquid-level switch；633rd, the second liquid-level switch；634th, the 3rd liquid-level switch；64th, connecting pipe；65th, filter；66th, ball valve；
67th, check-valves；7th, bentonite pumping installations；71st, it is radially injected hole；72nd, flow-guiding channel；73rd, flow guide bar；8th, middle shield；9th, tail shield；
10th, valve body.
Embodiment
Under will combine Figure of description and specific embodiment the utility model will be described in further details, but not therefore
And limit the scope of protection of the utility model.
As shown in figure 1, the abrasion reducing system of the rectangular pipe jacking machine of the present embodiment, including foam-generating device, foam produce dress
Put including the first controller, gas supply assembly 1, foam mixing liquid conveying assembly 2 and gas-liquid mixed component 3, wherein, gas supply assembly 1
Including for detecting the first flowmeter 11 of supply gas flow and the flow valve 12 of gas flow being supplied for adjusting, foam mixes
Closing liquid conveying assembly 2 includes being used for the first delivery pump 21 for conveying foam mixing liquid, and gas-liquid mixed component 3 is used to that gas will to be supplied
Mixed with foam mixing liquid.In the present embodiment, the first controller sends control respectively according to the detection signal of first flowmeter 11
Instruct and give the delivery pump 21 of flow valve 12 and first, the conveying capacity of control supply gas outflow amount and foam mixing liquid.This practicality
It is new that supply gas flow is detected using first flowmeter 11, foam is realized by the detection to gas flow and feedback
The accurate control of mixed liquor injection rate, the i.e. injection rate of foam mixing liquid use opened loop control with supply gas flow proportion, and
Realized by the flowmeter of one group of detection air mass flow, it effectively prevent sets flow to control feedback using closed-loop control Xu Ge roads
Situation, effectively reduce system complexity, control is simple and reliable；Meanwhile one group of flowmeter is set to effectively reduce flow
The replacement cost under corrosive environment is counted, service life of equipment is high.
In the present embodiment, first flowmeter 11 is to ensure that system realizes opened loop control for the timely feedback of air requirements amount
The detection signal of first flowmeter 11 is passed to flow valve 12 and adjusts its switching value by the basis followed, the first controller, simultaneously
The variable-frequency motor rotating speed of the first delivery pump 21 is controlled to adjust the pumping of foam mixing liquid, finally realizes foam mixing liquid and compression
The accurate proportioning of air.In the present embodiment, the dosage of foam mixing liquid, compressed air are mixed with foam according to needed for matching expansion rate
The proportioning for closing liquid is 1:8~25.
In the present embodiment, gas supply assembly 1 also includes steam line 13, filtering pressure reducing valve 14 and supplies gas pressure for detecting
The pressure gauge 15 of power.Wherein, the both ends of steam line 13 connect with supply source of the gas and gas-liquid mixed component 3 respectively；Filtering decompression
Valve 14 is used to pre-process supply gas, can remove air plankton, and provide stable pressure value.In the present embodiment, pressure
Power table 15, flow valve 12, filtering pressure reducing valve 14 and first flowmeter 11 are on steam line 13, and flow valve 12, pressure
Table 15 and first flowmeter 11 are respectively positioned on the downstream of filtering pressure reducing valve 14, to carry out pressure regulation and inspection to stable supply gas
Survey.
In the present embodiment, foam mixing liquid conveying assembly 2 also includes mixed liquor conveyance conduit 22 and flow indicator 23.Its
In, the both ends of mixed liquor conveyance conduit 22 produce component 6 with foam mixing liquid respectively and gas-liquid mixed component 3 connects；Flow refers to
Show device 23 on mixed liquor conveyance conduit 22, and positioned at the downstream of the first delivery pump 21, for the injection to foam mixing liquid
Amount is monitored in real time.
In the present embodiment, stop valve 4 and check valve 5 are equipped with steam line 13 and mixed liquor conveyance conduit 22.Cut-off
Valve 4 is two, and two stop valves 4 are divided into the liquid feeding end and outlet end of pipeline, for the overall break-make of control pipeline, convenient pipe
Repair in road；Check valve 5 is located at the downstream of the stop valve 4 of outlet end, for preventing gas-liquid from flowing backwards.In the present embodiment, stop valve 4 is
Ball valve, check valve 5 are Vertical Lift Check Valves.
In the present embodiment, foam mixing liquid and compressed air are after sufficiently mixing by caused bubble in gas-liquid mixed component 3
Foam injects push-bench, which ensure that the smooth discharge of dregs, ensure that the stabilization in digging face, the soil after foam is adjusted has
Good mobility, plasticity and moisture penetration, it expands the soil scope of push-bench excavation, while greatly reduces knife
Disk moment of torsion, reduce the abrasion of cutter.In the present embodiment, the output end of gas-liquid mixed component 3 is provided with regulation foam output quantity
Pressure-regulating valve and the ball check valve of control foam output.
As shown in Fig. 2 in the present embodiment, foam-generating device also includes foam mixing liquid and produces component 6, foam mixing liquid
Producing component 6 includes second controller, water supplying unit 61, foam dope supply unit 62 and for foam dope to be mixed with water
Mixed liquor generation unit 63.Wherein, water supplying unit 61 includes being used for the second flowmeter 611 for detecting water-carrying capacity, foam dope
Supply unit 62 includes the second delivery pump 621 of conveying foam dope, and second controller is believed according to the detection of second flowmeter 611
Control instruction number is sent to the second delivery pump 621, controls the conveying capacity of foam dope.Specifically, in the mixed of foam dope and water
After closing ratio-dependent, system enters working condition, now the water supply start of water supplying unit 61, and is detected by second flowmeter 611
Water-carrying capacity, controller determine required foam dope amount according to proportioning and signal are passed into the second delivery pump 621, the second conveying
The motor of pump 621 adjusts frequency conversion drive the rotating speed of the second delivery pump 621, and the result of detection is compensated, and then realizes
The accurate control of mixed solution proportioning, its is easy to control, and proportioning reliability is high.In the present embodiment, the proportioning of foam dope and water
For 0.8%~5%.
In the present embodiment, water supplying unit 61 also includes water supply line 612, and it is defeated that foam dope supply unit 62 also includes stoste
Pipeline 622 is sent, water supply line 612 is connected with liquid delivery pipeline 622 by connecting pipe 64 with mixed liquor generation unit 63, even
Thread a pipe and 64 be provided with filter 65, filter 65 is used to pre-process foam mixing liquid, with the mixed liquor that defoams
Large granular impurity.
In the present embodiment, ball valve 66 and check-valves 67, ball valve are equipped with water supply line 612 and liquid delivery pipeline 622
66 are located at the liquid feeding end of pipeline, for the break-make of control pipeline, facilitate pipeline maintenance；Check-valves 67 is located at the downstream of ball valve 66,
For preventing liquid from flowing backwards.In the present embodiment, second flowmeter 611 is located between the ball valve 66 and check-valves 67, and described the
Two delivery pumps 621 are located between ball valve 66 and check-valves 67.
In the present embodiment, the upstream of the ball valve 66 of water supply line 612 is provided with pneumatic ball valve 613, mixed liquor generation unit 63
Including foams mix liquid storage tank 631 and three groups of limit switches, foams mix liquid storage tank 631 mixes for keeping in foam dope with water
The foam mixing liquid of formation, three groups of limit switches include the be sequentially arranged from top to bottom along the side wall of foams mix liquid storage tank 631
One liquid-level switch 632, the second liquid-level switch 633 and the 3rd liquid-level switch 634, wherein, the first liquid-level switch 632, the second liquid level
Switch 633 is all connected with that threeth controller of the control instruction to pneumatic ball valve 613 can be sent, and it effectively prevent foam mixing liquid
Overflow, ensure that foams mix liquid storage tank 631 stores normal liquid level amount, the 3rd liquid-level switch 634 is used to prevent the first conveying
The free-runing operation of pump 21.In the present embodiment, foam dope supply unit 62 includes foam dope tank 623, on foam dope tank 623
Provided with the 4th limit switch 624, the 4th limit switch 624 is used for the liquid level for detecting foam dope.
As shown in Figures 3 to 5, in the present embodiment, the abrasion reducing system of rectangular pipe jacking machine also includes bentonite pumping installations 7,
Bentonite pumping installations 7 is located at the first half of shield 8 in push-bench, i.e., actively injects bentonite in the first half of middle shield 8, avoid
The first half of shield body is without the big phenomenon of fluid abrasion, and in the present embodiment, bentonite slurry is pumped into pipe by bentonite pumping installations 7
Between piece and soil layer, lubrication and protective effect are played to shield body shell and soil layer, which further reduces tube coupling in progradation
In abrasion, effectively protect tube coupling, improve equipment operation security and reliability, meanwhile, utilize bentonitic expansion
Property can effectively fill section of jurisdiction gap, play a part of preventing stratum from loosening, the support solidification soil body.
In the present embodiment, bentonite pumping installations 7 includes flow-guiding channel 72, multiple is radially injected hole 71 and multiple flow guide bars
73.Wherein, multiple to be radially injected hole 71 along the middle first half of shield 8 circumferentially, bentonite is pumped out by being radially injected hole 71, real
Existing pumping between section of jurisdiction and soil layer；Flow-guiding channel 72 is located at and is radially injected at hole 71, and is set along the direction of middle shield 8 to tail shield 9
Put, ensure that bentonite slurry spreads along flow-guiding channel 72 to tail shield 9, serve the effect of effectively protection shield body；Multiple water conservancy diversion
Along the middle first half of shield 8 circumferentially, flow guide bar 73 is in flow-guiding channel 72, and the pick of flow guide bar 73 and rectangular pipe jacking machine for bar 73
Enter that direction is parallel, it utilizes expansion of the surface tension of liquid in mud solidification preacceleration bentonite slurry between soil layer and shield body gap
Dissipate so that bentonite slurry is uniformly distributed between shield body shell and soil layer, beneficial to subsequent construction.In other embodiments, swelling
Bentonite it is anterior can also to be injected cutterhead according to stratum geological condition by native pumping installations 7.
In the present embodiment, the valve body 10 that hole 71 is provided with control bentonite injection is radially injected, bentonitic injection speed is matched somebody with somebody
Fltting speed is closed, pressure is injected by pressure sensor monitoring, and bentonitic injection and injection rate are controlled by valve body 10, at it
His embodiment, can also adopt and manually control.
Although the utility model is described by reference to preferred embodiment, model of the present utility model is not being departed from
In the case of enclosing, various improvement can be carried out to it and part therein can be replaced with equivalent.Especially, as long as not depositing
The every technical characteristic being previously mentioned in structural hazard, each embodiment can combine in any way.The utility model
It is not limited to specific embodiment disclosed herein, but all technical schemes including falling within the scope of the appended claims.
Claims (10)
- A kind of 1. abrasion reducing system of rectangular pipe jacking machine, it is characterised in that including foam-generating device, the foam-generating device bag Include the first controller, gas supply assembly, foam mixing liquid conveying assembly and the gas for supply gas to be mixed with foam mixing liquid Liquid electric hybrid module, the gas supply assembly include being used to detect the first flowmeter for supplying gas flow and supply gas for adjusting The flow valve of flow, the foam mixing liquid conveying assembly include being used for conveying the first delivery pump of foam mixing liquid, and described the One controller sends control instruction to flow valve and the first delivery pump, control supply respectively according to the detection signal of first flowmeter The conveying capacity of gas outflow amount and foam mixing liquid.
- 2. the abrasion reducing system of rectangular pipe jacking machine according to claim 1, it is characterised in that the gas supply assembly also includes supplying Feed channel, filtering pressure reducing valve and the pressure gauge for detecting supply gas pressure, the pressure gauge, flow valve and first flowmeter On the steam line, and positioned at the downstream of the filtering pressure reducing valve.
- 3. the abrasion reducing system of rectangular pipe jacking machine according to claim 2, it is characterised in that the foam mixing liquid conveying group Part also includes mixed liquor conveyance conduit and flow indicator, and the flow indicator is located on the mixed liquor conveyance conduit, and Positioned at the downstream of first delivery pump.
- 4. the abrasion reducing system of rectangular pipe jacking machine according to claim 3, it is characterised in that the steam line and mixed liquor Be equipped with conveyance conduit for control pipeline break-make stop valve and prevent gas-liquid flow backwards check valve.
- 5. the abrasion reducing system of the rectangular pipe jacking machine according to Claims 1-4 any one, it is characterised in that the foam Generation device also includes foam mixing liquid and produces component, and it is single including second controller, water supply that the foam mixing liquid produces component Member, foam dope supply unit and the mixed liquor generation unit for foam dope to be mixed with water, the water supplying unit include For detecting the second flowmeter of water-carrying capacity, the foam dope supply unit includes the second delivery pump of conveying foam dope, The second controller sends control instruction to the second delivery pump according to the detection signal of second flowmeter, controls foam dope Conveying capacity.
- 6. the abrasion reducing system of rectangular pipe jacking machine according to claim 5, it is characterised in that the water supplying unit also includes supplying Waterpipe, the foam dope supply unit also include liquid delivery pipeline, and the water supply line passes through with liquid delivery pipeline Connecting pipe connects with mixed liquor generation unit, and the connecting pipe is provided with the filtering for being used for being filtered to foam mixing liquid Device.
- 7. the abrasion reducing system of rectangular pipe jacking machine according to claim 6, it is characterised in that the water supply line and stoste are defeated The check-valves for sending the ball valve that control pipeline break-make is equipped with pipeline and preventing liquid from flowing backwards, the check-valves is located at ball valve Downstream.
- 8. the abrasion reducing system of rectangular pipe jacking machine according to claim 6, it is characterised in that the mixed liquor generation unit bag Including foams mix liquid storage tank and three groups of limit switches for detecting foam mixing liquid liquid level, limit switch described in three groups includes edge What foams mix liquid storage tank side wall was sequentially arranged from top to bottom prevents the first liquid-level switch, the guarantee foam that foam mixing liquid overflows Second liquid-level switch of mixing liquid storage tank storage normal level amount and the 3rd liquid-level switch for preventing the first delivery pump free-runing operation.
- 9. the abrasion reducing system of the rectangular pipe jacking machine according to Claims 1-4 any one, it is characterised in that also include to Bentonitic bentonite pumping installations is pumped between push-bench section of jurisdiction and soil layer, the bentonite pumping installations is located at the push pipe The middle shield of machine, and positioned at the first half of the middle shield.
- 10. the abrasion reducing system of rectangular pipe jacking machine according to claim 9, it is characterised in that the bentonite pumping installations Including being radially injected hole, located at the flow-guiding channel being radially injected at hole and located at water conservancy diversion along the middle shield first half circumferentially multiple The multiple flow guide bars of the shield first half circumferentially in passage interior edge, flow-guiding channel shield to direction of tail shield in are set, institute It is parallel with the tunneling direction of rectangular pipe jacking machine to state flow guide bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720672714.6U CN207161086U (en) | 2017-06-09 | 2017-06-09 | A kind of abrasion reducing system of rectangular pipe jacking machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720672714.6U CN207161086U (en) | 2017-06-09 | 2017-06-09 | A kind of abrasion reducing system of rectangular pipe jacking machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207161086U true CN207161086U (en) | 2018-03-30 |
Family
ID=61710435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720672714.6U Withdrawn - After Issue CN207161086U (en) | 2017-06-09 | 2017-06-09 | A kind of abrasion reducing system of rectangular pipe jacking machine |
Country Status (1)
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| CN (1) | CN207161086U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107091100A (en) * | 2017-06-09 | 2017-08-25 | 中国铁建重工集团有限公司 | A kind of abrasion reducing system of rectangular pipe jacking machine |
-
2017
- 2017-06-09 CN CN201720672714.6U patent/CN207161086U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107091100A (en) * | 2017-06-09 | 2017-08-25 | 中国铁建重工集团有限公司 | A kind of abrasion reducing system of rectangular pipe jacking machine |
| CN107091100B (en) * | 2017-06-09 | 2023-10-17 | 中国铁建重工集团股份有限公司 | Antifriction system of rectangle push bench |
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Address after: 410100 No. 88 East 7 Line, Changsha Economic and Technological Development Zone, Hunan Province Patentee after: China Railway Construction Heavy Industry Co.,Ltd. Address before: 410100 No. 88 Dongqi Road, Jingkai District, Changsha City, Hunan Province Patentee before: China Railway Construction Heavy Industry Co.,Ltd. |
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