CN114320338A - Pipeline non-excavation pneumatic dumping system and working method thereof - Google Patents
Pipeline non-excavation pneumatic dumping system and working method thereof Download PDFInfo
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- CN114320338A CN114320338A CN202111633631.3A CN202111633631A CN114320338A CN 114320338 A CN114320338 A CN 114320338A CN 202111633631 A CN202111633631 A CN 202111633631A CN 114320338 A CN114320338 A CN 114320338A
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000009412 basement excavation Methods 0.000 title claims description 4
- 239000002689 soil Substances 0.000 claims abstract description 114
- 239000007787 solid Substances 0.000 claims description 42
- 239000011229 interlayer Substances 0.000 claims description 16
- 239000003638 chemical reducing agent Substances 0.000 claims description 13
- 239000008247 solid mixture Substances 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 230000005641 tunneling Effects 0.000 claims description 10
- 230000009471 action Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 6
- 238000005243 fluidization Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000005507 spraying Methods 0.000 claims 1
- 238000007599 discharging Methods 0.000 abstract description 12
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 239000004927 clay Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000005469 granulation Methods 0.000 description 2
- 230000003179 granulation Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 108010066114 cabin-2 Proteins 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- -1 is not energy-saving Substances 0.000 description 1
- 239000002103 nanocoating Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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Abstract
The invention discloses a pipeline trenchless pneumatic dumping system and a working method thereof. The system has the advantages of small occupied area, no environmental pollution, continuous operation, high soil discharging efficiency and high automation degree.
Description
Technical Field
The invention belongs to the technical field of underground pipeline construction, and particularly relates to a pipeline trenchless pneumatic dumping system and a working method thereof.
Background
At present, one of the common methods for the trenchless technology of pipelines is the pipe jacking method, and the pipe jacking method has two common methods of earth balance type and earth pressure balance type according to different jacking devices. The earth balanced type earth dumping method mainly comprises the steps of setting a mud pit, diluting excavated clay or earth by using water flow, pumping the diluted clay or earth to the mud pit on the ground by using a mud pump, adjusting mud ratio, then recirculating the mud to the head of the pipe jacking machine, and burying or transporting the redundant earth on the spot, thereby achieving the purposes of dumping and discharging the earth; the soil pressure balanced type soil discharging method is that soil enters the sealed soil bin and the screw conveyer and is transported by the screw conveyer to remove cut soil. The two soil discharging modes have the following defects: 1) the mud-water balanced type soil discharge occupies a larger ground space, and the mud-water treatment equipment is large and complex and can generate vibration and larger noise; 2) the mud-water balanced type dumping consumes a large amount of water, is not energy-saving, and mud is easy to leak and pollute the surrounding environment; 3) the soil pressure balance type soil discharging and unearthing efficiency is low, the spiral conveyor needs to be matched with a pressure feeding device or manual soil conveying, and the operation is discontinuous; 4) the soil pressure balance type soil discharging has low automation degree and high manual strength.
Therefore, the traditional trenchless soil discharging mode has the defects of complex equipment, small occupied area, low automation degree, unfriendly environment and the like.
Disclosure of Invention
The invention aims to provide a pipeline trenchless pneumatic dumping system and a working method thereof.
The technical scheme adopted by the invention is as follows:
a pipeline trenchless pneumatic dumping system comprises a high-pressure blower, a feeding controller, a reducing pipe, a mixer, a conveying pipe, a gas-solid separator and a solid collector, wherein the feeding controller, the reducing pipe, the mixer, the conveying pipe, the gas-solid separator and the solid collector are sequentially connected along the soil conveying flow direction; the feeding controller is arranged on the rear side of the outlet of the soil bin on the pipe jacking machine and used for homogenizing input soil and uniformly pushing the soil to the reducing pipe at a proper speed according to the speed of the tunneling machine on the pipe jacking machine; the reducing pipe is in a horn shape with a wide front part and a narrow back part, an annular interlayer is arranged on the outer side of the reducing pipe, the interlayer is connected to a high-pressure blower through an air inlet pipe, and when a large amount of high-speed airflow is blown into the interlayer by the high-pressure blower, the airflow impacts forwards along the soil treatment flow direction and simultaneously generates a negative pressure suction effect on the inner side of the reducing pipe so as to provide power for the whole system; the mixer is used for fully mixing the soil and the gas into fluidization and simultaneously decelerating and pressurizing the gas flow; the gas-solid separator is positioned on the ground, and the top of the gas-solid separator is provided with an exhaust valve for separating soil and gas; the solid collector is used for collecting the separated soil and solidifying and forming.
Preferably, the jet direction of the interlayer outlet air forms an angle of 45 degrees with the feeding direction of the soil.
Preferably, the conveying pipe is formed by splicing pipe joints and elbows, and the splicing position is connected by flanges and can be backwards lengthened according to the length of the jacking pipe.
Preferably, the conveying pipe is made of a pressure-resistant steel pipe, and the inner wall of the conveying pipe is coated with a high-molecular coating.
Preferably, one end of the conveying pipe is connected with the mixer, and the other end of the conveying pipe extends backwards to the working pit, then extends upwards out of the ground at the pushing equipment, and then is connected into the gas-solid separator.
Preferably, the gas-solid separator adopts a tower structure, the upper part is a gas bin, and the lower part is a solid bin.
Preferably, the gas-solid separator is 2-3m high and less than one lane of vehicles wide.
Preferably, a filter is arranged at the front side of the exhaust valve.
In the working method of the pipeline trenchless pneumatic dumping system, in the pipeline trenchless jacking process, the heading machine cuts a soil body at the foremost end, and soil enters the soil bin and enters the feeding controller under the action of soil pressure; the feeding controller homogenizes the input soil and uniformly pushes the soil to the reducing pipe at a proper speed according to the speed of the tunneling machine on the pipe jacking machine; when a large amount of high-speed airflow is blown into the interlayer by the high-pressure blower, the airflow is accelerated and is impacted forwards along the conveying flow direction of the soil, meanwhile, the airflow generates a negative pressure suction effect at the inner side of the reducing pipe, the flow speed of the soil is rapidly increased under the double actions of reducing the section and sucking the negative pressure when the soil passes through the reducing pipe, and the high-speed airflow rapidly blows out a part of water in the soil on one hand and preliminarily fluidizes the soil on the other hand; the gas-solid mixture from the reducer is driven by the airflow to enter the mixer, the gas in the mixer is further mixed with the soil to realize complete fluidization, meanwhile, the flow rate of the high-speed gas is gradually reduced in the mixer, and the high-pressure state is recovered at the tail end of the mixer, so that the gas-solid mixture has enough pressure before entering the conveying pipe and can be smoothly conveyed to the ground; transferring the fluidized gas-solid mixture to a gas-solid separator on the ground through a conveying pipe, wherein the conveying pipe is lengthened along with the advance of the tunneling machine; the gas-solid separator separates soil and gas, and the separated gas is discharged through an exhaust valve; the separated soil enters a solid collector, the soil is compressed and formed in the solid collector and is temporarily stored, and the soil is transported to a spoil area by a muck truck.
The invention has the beneficial effects that:
in the system, a feed controller homogenizes the input soil and adapts to the tunneling speed; the high-pressure blower and the reducer provide a soil conveying power source for the whole system, the soil is primarily fluidized in the reducer, and meanwhile, the high-speed airflow has a certain soil drying function and can blow out water in part of the soil, so that the effects of high granulation degree, prevention of soil adhesion and increase of soil discharging speed are achieved; the mixer enhances the fluidity of the gas-solid mixture, is easy to transport in a conveying pipeline, and simultaneously, the high-speed airflow decelerates in the mixer and recovers high pressure to store energy for subsequent transportation in the conveying pipeline. The system has the advantages of small occupied area, no sludge discharge, no water consumption, no environmental pollution, continuous operation, high soil discharging efficiency, high automation degree and low labor intensity, and the whole soil discharging process is carried out in a closed pipeline environment.
Drawings
Fig. 1 is a working principle diagram of a pipeline trenchless pneumatic dumping system in the embodiment of the invention.
Fig. 2 is a cross-sectional view of a reducer according to an embodiment of the invention.
In the figure: 1-a heading machine; 2-a soil bin; 3-a feed controller; 4-a reducer; 5-a high pressure blower; 6, an air inlet pipe; 7-a mixer; 8-conveying pipe; 9-gas-solid separator; 10-a solids collector; 11-an exhaust valve; 12-a jacking device; 13-interlayer.
Detailed Description
The invention is further described below with reference to the figures and examples.
As shown in fig. 1 and fig. 2, a pipeline trenchless pneumatic dumping system comprises a high pressure blower 5, and a feeding controller 3, a reducer 4, a mixer 7, a conveying pipe 8, a gas-solid separator 9 and a solid collector 10 which are connected in sequence along the soil conveying flow direction; the feeding controller 3 is arranged at the rear side of the outlet of the soil cabin 2 on the pipe jacking machine and is used for homogenizing input soil and pushing the soil to the reducing pipe 4 at a proper speed according to the speed of the tunneling machine 1 on the pipe jacking machine; the reducer 4 is in a horn shape with a wide front part and a narrow back part, an annular interlayer 13 is arranged on the outer side of the reducer 4, the interlayer 13 is connected to the high-pressure blower 5 through the air inlet pipe 6, and when a large amount of high-speed airflow is blown into the interlayer 13 by the high-pressure blower 5, the airflow impacts forwards along the soil treatment flow direction and generates negative pressure suction on the inner side of the reducer 4 at the same time so as to provide power for the whole system; the mixer 7 is used for fully mixing the soil and the gas into fluidization and simultaneously decelerating and pressurizing the air flow; the gas-solid separator 9 is positioned on the ground, and the top of the gas-solid separator is provided with an exhaust valve 11 for separating soil and gas; the solid collector 10 is used for collecting separated soil and solidifying and forming.
In this embodiment, the air at the outlet of the interlayer 13 is injected at an angle of 45 ° to the direction of the soil feed.
In this embodiment, the delivery pipe 8 is formed by splicing pipe joints and elbows, and the splicing position is connected by flanges and can be backwards lengthened according to the length of the jacking pipe.
In this embodiment, the conveying pipe 8 is made of a pressure-resistant steel pipe, and the inner wall is made of a polymer coating. The frictional resistance is reduced to facilitate the transport of the fluidized soil.
As shown in fig. 1, in this embodiment, the delivery pipe 8 is connected at one end to the mixer 7 and extends rearwardly to the working pit, then extends upwardly out of the ground at the jacking device 12, and then enters the gas-solid separator 9.
In this embodiment, the gas-solid separator 9 is of a tower structure, and the upper part is a gas bin and the lower part is a solid bin.
In this embodiment, the gas-solid separator 9 is 2-3m high and less wide than one lane of vehicles. The large-area ground space is not occupied, and the influence on ground traffic is small.
The front side of the exhaust valve 11 is provided with a filter. Ensuring that the discharged gas does not pollute the environment.
In the working method of the pipeline trenchless pneumatic dumping system, in the pipeline trenchless jacking process, the heading machine 1 cuts soil at the foremost end, and soil enters the soil bin 2 and enters the feeding controller 3 under the action of soil pressure; the feeding controller 3 homogenizes the input soil, and uniformly pushes the soil to the reducing pipe 4 at a proper speed according to the speed of the heading machine 1 on the pipe jacking machine, and the feeding controller 3 can adopt spiral conveying; when a large amount of high-speed airflow is blown into the interlayer 13 by the high-pressure blower 5, the airflow is accelerated and is impacted forwards along the conveying flow direction of the soil, meanwhile, the airflow generates a negative pressure suction effect at the inner side of the reducing pipe 4, the flow speed of the soil is rapidly increased under the double actions of reduction of the section and negative pressure suction when the soil passes through the reducing pipe 4, and the high-speed airflow rapidly blows out a part of water in the soil on one hand and preliminarily fluidizes the soil on the other hand; the gas-solid mixture from the reducer 4 is driven by the airflow to rush into the mixer 7, the gas in the mixer 7 is further mixed with the soil to realize complete fluidization, meanwhile, the flow rate of the high-speed gas is gradually reduced in the mixer 7, and the high-pressure state is recovered at the tail end of the mixer 7, so that the gas-solid mixture has enough pressure before entering the conveying pipe 8 and can be smoothly conveyed to the ground; the fluidized gas-solid mixture is transferred to a gas-solid separator 9 on the ground through a conveying pipe 8, and the conveying pipe 8 is lengthened along with the advance of the tunneling machine 1; the gas-solid separator 9 separates the soil and the gas, and the separated gas is discharged through an exhaust valve 11; the separated soil enters a solid collector 10 where it is compressed, formed and temporarily stored, and transported to a spoil site by a spoil vehicle.
In the system, a feed controller 3 homogenizes the input soil and adapts to the tunneling speed; the high-pressure blower 5 and the reducer 4 provide a soil conveying power source for the whole system, the soil is primarily fluidized in the reducer 4, and meanwhile, the high-speed airflow has a certain soil drying function and can blow out moisture in a part of the soil, so that the effects of high granulation degree, prevention of soil adhesion and increase of soil discharge speed are achieved; the mixer 7 enhances the fluidity of the gas-solid mixture and facilitates the transportation in the transportation pipeline, and simultaneously, the high-speed airflow decelerates in the mixer 7 and recovers the high pressure to store energy for the subsequent transportation in the transportation pipeline 8. The system has the advantages of small occupied area, no sludge discharge, no water consumption, no environmental pollution, continuous operation, high soil discharging efficiency, high automation degree and low labor intensity, and the whole soil discharging process is carried out in a closed pipeline environment.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (9)
1. The utility model provides a pipeline non-excavation strength dumping system which characterized in that: comprises a high-pressure blower, a feeding controller, a reducing pipe, a mixer, a conveying pipe, a gas-solid separator and a solid collector which are sequentially connected along the conveying flow direction of soil; the feeding controller is arranged on the rear side of the outlet of the soil bin on the pipe jacking machine and used for homogenizing input soil and uniformly pushing the soil to the reducing pipe at a proper speed according to the speed of the tunneling machine on the pipe jacking machine; the reducing pipe is in a horn shape with a wide front part and a narrow back part, an annular interlayer is arranged on the outer side of the reducing pipe, the interlayer is connected to a high-pressure blower through an air inlet pipe, and when a large amount of high-speed airflow is blown into the interlayer by the high-pressure blower, the airflow impacts forwards along the soil treatment flow direction and generates negative pressure suction on the inner side of the reducing pipe at the same time so as to provide power for the whole system; the mixer is used for fully mixing the soil and the gas into fluidization and simultaneously decelerating and pressurizing the gas flow; the gas-solid separator is positioned on the ground, and the top of the gas-solid separator is provided with an exhaust valve for separating soil and gas; the solid collector is used for collecting the separated soil and solidifying and forming.
2. The pneumatic trenchless soil evacuation system of claim 1, wherein: the spraying direction of the interlayer outlet and the feeding direction of the soil form an included angle of 45 degrees.
3. The pneumatic trenchless soil evacuation system of claim 1, wherein: the conveyer pipe is formed by tube coupling and elbow concatenation, and the concatenation department adopts flange joint, can connect the length backward according to the push pipe length.
4. The pneumatic trenchless soil evacuation system of claim 1, wherein: the conveying pipe is made of pressure-resistant steel pipe, and the inner wall of the conveying pipe is made of polymer coating.
5. The pneumatic trenchless soil evacuation system of claim 1, wherein: one end of the conveying pipe is connected with the mixer, the other end of the conveying pipe extends backwards to the working pit, then the conveying pipe extends upwards out of the ground at the pushing equipment, and then the conveying pipe is connected with the gas-solid separator.
6. The pneumatic trenchless soil evacuation system of claim 1, wherein: the gas-solid separator adopts a tower structure, the upper part is a gas bin, and the lower part is a solid bin.
7. The pneumatic trenchless soil evacuation system of claim 1, wherein: the gas-solid separator is 2-3m high and less than one motor vehicle lane.
8. The pneumatic trenchless soil evacuation system of claim 1, wherein: the front side of the exhaust valve is provided with a filter.
9. A method of operating a pipe trenchless pneumatic dumping system as claimed in any of claims 1 to 8, comprising: in the non-excavation jacking process of the pipeline, the heading machine cuts a soil body at the foremost end, and soil enters a soil cabin and enters a feeding controller under the action of soil pressure; the feeding controller homogenizes the input soil and uniformly pushes the soil to the reducing pipe at a proper speed according to the speed of the tunneling machine on the pipe jacking machine; when a large amount of high-speed airflow is blown into the interlayer by the high-pressure blower, the airflow is accelerated and is impacted forwards along the conveying flow direction of the soil, meanwhile, the airflow generates a negative pressure suction effect at the inner side of the reducing pipe, the flow speed of the soil is rapidly increased under the double actions of reducing the section and sucking the negative pressure when the soil passes through the reducing pipe, and the high-speed airflow rapidly blows out a part of water in the soil on one hand and preliminarily fluidizes the soil on the other hand; the gas-solid mixture from the reducer is driven by the airflow to enter the mixer, the gas in the mixer is further mixed with the soil to realize complete fluidization, meanwhile, the flow rate of the high-speed gas is gradually reduced in the mixer, and the high-pressure state is recovered at the tail end of the mixer, so that the gas-solid mixture has enough pressure before entering the conveying pipe and can be smoothly conveyed to the ground; transferring the fluidized gas-solid mixture to a gas-solid separator on the ground through a conveying pipe, wherein the conveying pipe is lengthened along with the advance of the tunneling machine; the gas-solid separator separates soil and gas, and the separated gas is discharged through an exhaust valve; the separated soil enters a solid collector, the soil is compressed and formed in the solid collector and is temporarily stored, and the soil is transported to a spoil area by a muck truck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111633631.3A CN114320338A (en) | 2021-12-29 | 2021-12-29 | Pipeline non-excavation pneumatic dumping system and working method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111633631.3A CN114320338A (en) | 2021-12-29 | 2021-12-29 | Pipeline non-excavation pneumatic dumping system and working method thereof |
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| CN114320338A true CN114320338A (en) | 2022-04-12 |
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| CN202111633631.3A Pending CN114320338A (en) | 2021-12-29 | 2021-12-29 | Pipeline non-excavation pneumatic dumping system and working method thereof |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0762972A (en) * | 1993-08-23 | 1995-03-07 | Hirose & Co Ltd | Discharging/processing method for excavated sediment and device thereof |
| JPH11152993A (en) * | 1997-11-20 | 1999-06-08 | Copros | Sand and soil conveying device for jacking device |
| JP2000110490A (en) * | 1998-10-05 | 2000-04-18 | Nkk Corp | Method and device of carrying out excavated sediment |
| CN105863666A (en) * | 2016-01-31 | 2016-08-17 | 佛山市艺彩玻璃钢制品有限公司 | Tunnel boring machine residue discharging device and trenchless tunnel boring machine provided with device |
| CN207212353U (en) * | 2017-09-05 | 2018-04-10 | 天津恒信有源机械设备有限公司 | The pneumatic discharging structure of cobble push-bench |
| CN107989631A (en) * | 2017-11-24 | 2018-05-04 | 上海隧道工程有限公司 | Pipe curtain push-bench excavation device |
| CN109441472A (en) * | 2018-11-30 | 2019-03-08 | 中国人民解放军63926部队 | Dregs front-discharged level digs tunnel equipment and its construction method |
| CN111589210A (en) * | 2020-06-12 | 2020-08-28 | 中电建南方建设投资有限公司 | Shield constructs separation filter equipment of quick-witted mud material |
| CN112432202A (en) * | 2020-11-27 | 2021-03-02 | 杭州意能电力技术有限公司 | Injection type fire detection air cooling device |
| CN214145495U (en) * | 2020-12-08 | 2021-09-07 | 中船重型装备有限公司 | Shield tunneling machine muck conveying device for water-rich stratum |
| CN215262463U (en) * | 2021-07-07 | 2021-12-21 | 杭州金投装备有限公司 | Be used for shield structure machine work monitoring devices |
-
2021
- 2021-12-29 CN CN202111633631.3A patent/CN114320338A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0762972A (en) * | 1993-08-23 | 1995-03-07 | Hirose & Co Ltd | Discharging/processing method for excavated sediment and device thereof |
| JPH11152993A (en) * | 1997-11-20 | 1999-06-08 | Copros | Sand and soil conveying device for jacking device |
| JP2000110490A (en) * | 1998-10-05 | 2000-04-18 | Nkk Corp | Method and device of carrying out excavated sediment |
| CN105863666A (en) * | 2016-01-31 | 2016-08-17 | 佛山市艺彩玻璃钢制品有限公司 | Tunnel boring machine residue discharging device and trenchless tunnel boring machine provided with device |
| CN207212353U (en) * | 2017-09-05 | 2018-04-10 | 天津恒信有源机械设备有限公司 | The pneumatic discharging structure of cobble push-bench |
| CN107989631A (en) * | 2017-11-24 | 2018-05-04 | 上海隧道工程有限公司 | Pipe curtain push-bench excavation device |
| CN109441472A (en) * | 2018-11-30 | 2019-03-08 | 中国人民解放军63926部队 | Dregs front-discharged level digs tunnel equipment and its construction method |
| CN111589210A (en) * | 2020-06-12 | 2020-08-28 | 中电建南方建设投资有限公司 | Shield constructs separation filter equipment of quick-witted mud material |
| CN112432202A (en) * | 2020-11-27 | 2021-03-02 | 杭州意能电力技术有限公司 | Injection type fire detection air cooling device |
| CN214145495U (en) * | 2020-12-08 | 2021-09-07 | 中船重型装备有限公司 | Shield tunneling machine muck conveying device for water-rich stratum |
| CN215262463U (en) * | 2021-07-07 | 2021-12-21 | 杭州金投装备有限公司 | Be used for shield structure machine work monitoring devices |
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Application publication date: 20220412 |