CN111879894A - Detection protection system for limited space and use method thereof - Google Patents
Detection protection system for limited space and use method thereof Download PDFInfo
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- CN111879894A CN111879894A CN202010627756.4A CN202010627756A CN111879894A CN 111879894 A CN111879894 A CN 111879894A CN 202010627756 A CN202010627756 A CN 202010627756A CN 111879894 A CN111879894 A CN 111879894A
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- 238000001514 detection method Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000010276 construction Methods 0.000 claims abstract description 30
- 238000004891 communication Methods 0.000 claims abstract description 25
- 239000007789 gas Substances 0.000 claims description 52
- 230000002159 abnormal effect Effects 0.000 claims description 8
- 230000009471 action Effects 0.000 claims description 8
- 238000003331 infrared imaging Methods 0.000 claims description 6
- 238000011897 real-time detection Methods 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 4
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 4
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 4
- 229910000037 hydrogen sulfide Inorganic materials 0.000 claims description 4
- QVFWZNCVPCJQOP-UHFFFAOYSA-N chloralodol Chemical compound CC(O)(C)CC(C)OC(O)C(Cl)(Cl)Cl QVFWZNCVPCJQOP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 2
- 230000007246 mechanism Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000009423 ventilation Methods 0.000 description 4
- 230000001174 ascending effect Effects 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 238000001338 self-assembly Methods 0.000 description 2
- 206010021143 Hypoxia Diseases 0.000 description 1
- 208000005374 Poisoning Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0062—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display
- G01N33/0063—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display using a threshold to release an alarm or displaying means
- G01N33/0065—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display using a threshold to release an alarm or displaying means using more than one threshold
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
- G01N33/004—CO or CO2
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
- G01N33/0044—Sulphides, e.g. H2S
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
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- Medicinal Chemistry (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Combustion & Propulsion (AREA)
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Abstract
The invention belongs to the field of limited space operation, mainly relates to a construction protection device of an underground closed space, and particularly relates to a detection exhaust system for a limited space and a use method thereof, wherein the top of the closed construction space is provided with a working well and an exhaust well, the position of the well mouth of the working well is provided with a tripod, an electric tractor is suspended in the tripod, the position of the well mouth of the exhaust well is connected with an exhaust fan through an exhaust pipe, a self-propelled vehicle is arranged in the closed construction space, the self-propelled vehicle, the electric tractor and the exhaust fan form an self-networking network through a network protocol, the self-networking network forms communication with a remote platform, an infrared camera, a four-in-one gas detector and a wireless communication unit are arranged in the self-propelled vehicle, the signal output ends of the infrared camera and the four-in-one gas detector realize signal intercommunication with the remote platform through the wireless, the remote platform is connected with the motor control end of the electric tractor and the control end of the exhaust fan.
Description
Technical Field
The invention belongs to the field of limited space operation, mainly relates to a construction protection device for an underground closed space, and particularly relates to a detection exhaust system for a limited space and a use method thereof.
Background
The limited space is a closed or partially closed space, an inlet and an outlet are narrow and limited, the limited space is not designed as a fixed working place, and the limited space has poor natural ventilation and is easy to cause accumulation of toxic and harmful, flammable and explosive substances or insufficient oxygen content. Comprises a closed device, an underground limited space and an above-ground limited space. The limited space operation has poisoning risk, oxygen deficiency risk and explosion risk. Therefore, ventilation is generally carried out before operation, a four-in-one compound gas detector (comprising oxygen, combustible gas, hydrogen sulfide and carbon monoxide) is selected to detect the gas in the limited space, after the gas is qualified, operators enter the site, the operators detect and record the gas in the limited space every hour by special persons in work engineering, and after the gas is found to be over-limited, the operators in the limited space are rescued by adopting a rescue tripod. The conventional method has the following problems: (1) before operation, only the gas concentration at the inlet of the limited space can be measured, the gas concentration of the whole limited space cannot be detected, and the detection space is limited. (2) During operation, gas detection and recording are carried out every 1 hour, and real-time detection and recording cannot be realized. (3) When exhausting, the exhaust device exhausts according to fixed power, and the exhaust volume can not be adjusted according to the gas concentration. (4) During rescue, people in a limited space can be rescued manually through the rescue tripod, and people cannot be rescued automatically at the first time.
Aiming at the problems, domestic scholars make corresponding research and propose some improvement methods: the invention provides a method and a system for carrying out safety protection on limited space operation, which can receive and process real-time video images sent from the inside of a limited space and receive and process gas concentration detection data sent from the inside of the limited space. The invention discloses a limited space operation double-pipe ventilation device and a working method thereof, and the limited space operation double-pipe ventilation device comprises a floating island mechanism, an air blowing mechanism, an air pumping mechanism and a first monitoring mechanism; the device can fully stir and extract the gas in the limited space, and simultaneously, the fresh air in the atmosphere can be quickly and effectively replaced to enter the limited space, so that the life safety of operators and rescue workers in the limited space is ensured.
However, the above method has a limited detection space, cannot adjust the air discharge amount according to the gas concentration, and cannot automatically save people at the first time.
The invention aims to solve the technical problem that the dynamic uninterrupted detection device is based on, the device can detect the transverse space and the longitudinal space in a limited space in real time, and upload the detected data to a remote platform in real time through a network protocol, and the remote platform controls the running power of an exhaust fan and the lifting position of an electric tractor through corresponding data information, thereby carrying out judgment, early warning and adjustment in advance, actively responding and shortening the reaction time.
Disclosure of Invention
The invention aims to fill the blank of the prior art and provides a detection and protection system for a limited space, which has a reasonable structure, is judged in advance, early-warns, adjusts and actively corresponds to shorten the reaction time, and a use method thereof.
The technical scheme adopted by the invention is as follows:
the utility model provides a finite space is with detecting protection system, includes closed construction space, and this closed construction space's top is provided with working well and exhaust shaft, the tripod is installed to the well head position of working well, and the suspension has electric traction machine in this tripod, the well head position of exhaust shaft is connected its characterized in that with a row of fan through the exhaust pipe: install a car of marcing by oneself in the closed construction space, should advance the car by oneself, electric traction machine and exhaust fan pass through network protocol and form the ad hoc network, the ad hoc network forms communication with a remote platform, installs infrared camera in advancing the car by oneself, four unification gas detection appearance and wireless communication unit, infrared camera, the signal output part of four unification gas detection appearance realize signal intercommunication through wireless communication unit and remote platform, and the motor control end of this remote platform and electric traction machine, the control end of exhaust fan are connected, to electric traction machine and exhaust fan output control command.
Further, the self-propelled vehicle base, the portion of marcing and lift portion, the base is installed in the portion of marcing upper end, and the portion of lifting is installed to this portion of marcing's top an organic whole.
Further, the advancing part comprises a chassis, a plurality of groups of advancing wheels are symmetrically arranged in the chassis and driven by a diesel engine, and a plurality of advancing wheels on the same side are sleeved with a crawler belt
Furthermore, the lifting part comprises a plurality of hinge groups which are symmetrically arranged, a lifting hydraulic cylinder and a lifting platform, one hinge group comprises two pairs, one pair comprises two hinge rods, the middle parts of the two hinge rods in the same pair are hinged, the other pair in the same group is symmetrically arranged at the other side at intervals, the end parts of the hinge rods between the two adjacent hinge groups are hinged and fixed, the end parts of the two sides of the lifting hydraulic cylinder are respectively hinged and fixed with one hinge rod in each hinge group through a connecting piece, the lifting hydraulic cylinder is in a stroke state, and each hinge group synchronously supports the lifting platform to lift; the lifting hydraulic cylinder is in a return stroke state, and each hinge group synchronously contracts to lower the lifting platform.
Further, the infrared camera, the four-in-one gas detector and the wireless communication unit are installed in the lifting platform; the infrared camera adopts HOPE infrared sensor, and four unification gas detection appearance adopt the brand to be the gaseous detector that the BW model is MCXL-XWHM, the gaseous concentration of detectable oxygen, combustible gas, hydrogen sulfide, carbon monoxide, and wireless communication unit adopts the brand to be ATK, and the model is LORA-01's communication device, and it transmits through the LORA agreement.
The use method of the detection protection system for the limited space is characterized in that: the method comprises the following steps:
step 1: opening a working well and an exhaust well of the closed construction space, and starting an exhaust fan to exhaust air;
step 2: after the exhaust fan runs, the self-propelled vehicle is hoisted into the closed construction space through the electric tractor;
and step 3: an infrared camera and a four-in-one gas detector carried by a self-advancing vehicle are adopted to carry out infrared imaging and gas detection respectively;
and 4, step 4: after the infrared imaging and the gas detection are finished, an operator hangs down into the closed construction space under the action of the electric tractor;
and 5: the exhaust fan continuously works, and the self-propelled vehicle continuously reciprocates in the closed construction space to perform real-time detection;
step 6: when the self-propelled vehicle detects that the concentration of the corresponding gas exceeds a set threshold value, an abnormal signal is output through the communication of the remote platform;
and 7: after acquiring the abnormal signals, the remote platform respectively outputs control commands to the exhaust fan and the electric traction machine, the exhaust fan increases the exhaust power, and the rope of the electric traction machine descends;
and 8: the exhaust fan continuously operates to increase the exhaust speed until an operator lifts the well from the closed construction space under the action of the electric tractor.
The invention has the advantages and positive effects that:
in the invention, the self-propelled vehicle, the electric traction machine and the exhaust fan form a set of self-assembly system. The reciprocating real-time detection is carried out in a closed construction space on the basis of self-propelled vehicles. And then to the video condition in the finite space, gas concentration gathers to upload the data of gathering through wireless communication unit, remote platform then controls the action of electric traction machine and the power of exhaust fan according to the data of uploading. When the gas concentration in the limited space is abnormal, the exhaust fan can actively increase the power and increase the speed of leading out the harmful gas, and the electric tractor actively probes downwards, so that the well-lifting time is shortened.
In the invention, the base is used for carrying equipment and fixing the equipment and the advancing part, the advancing part is used for driving the device to move integrally and controlling the advancing mode and the advancing distance of the device, and the crawler-type structure is adopted, so that the adaptability is strong, and the device is not easy to jam and overturn. Because the gas velocity of flow in the finite space is low, and the layering is easily carried out to gaseous density difference, consequently carry on lift platform in the car of advancing certainly and can detect the gas concentration of different heights, and then realize the detection of horizontal and longitudinal direction.
According to the invention, by applying the using method of the system, air is exhausted in advance before an operator goes into the well, and the self-propelled vehicle is hoisted to a limited space in advance for detection, so that the operator is ensured to be in a safe state when going into the well. Then, the self-propelled vehicle does uninterrupted reciprocating motion in a limited space and is matched with a lifting mechanism to detect different heights. In the active detection process, after the problem of gas concentration abnormity occurs, the remote platform uploads real-time data through the ad hoc network, and the remote platform collects the data and then controls the exhaust fan and the electric traction machine to act. The exhaust fan increases the exhaust power, the cable of the electric tractor descends actively, and after the operator moves to the position of the working well, the cable of the electric tractor descends to a liftable state, so that the response time is shortened until the well ascending is completed.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of a self-propelled vehicle part in the present invention.
Detailed Description
The present invention is further illustrated by the following examples, which are intended to be illustrative, not limiting and are not intended to limit the scope of the invention.
A detection and protection system for a limited space comprises a closed construction space 2, wherein a working well 8 and an exhaust well 31 are arranged at the top of the closed construction space, a tripod 12 is arranged at a well mouth position 5 of the working well, an electric traction machine 11 is suspended in the tripod, and the well mouth position of the exhaust well is connected with an exhaust fan 33 through an exhaust pipe 32. the detection and protection system is characterized in that a self-propelled vehicle 4 is arranged in the closed construction space, the self-propelled vehicle, the electric traction machine and the exhaust fan form an ad hoc network through a network protocol, the ad hoc network forms communication with a remote platform, an infrared camera, a four-in-one gas detector and a wireless communication unit are arranged in the self-propelled vehicle, the signal output ends of the infrared camera and the four-in-one gas detector realize signal intercommunication with the remote platform through the wireless communication unit, and the motor control end of the remote platform and the electric traction machine, the control end of the exhaust fan is connected with each other and outputs a control command to the electric traction fan and the exhaust fan.
In this embodiment, the self-propelled vehicle includes a base 48, a traveling section and a lifting section, the base is mounted on the upper end of the traveling section, and the lifting section is integrally mounted on the top of the traveling section.
In this embodiment, the advancing unit includes a chassis, a plurality of sets of advancing wheels are symmetrically installed in the chassis, the plurality of sets of advancing wheels are driven by a diesel engine, and a caterpillar 49 is sleeved on the plurality of advancing wheels on the same side.
In this embodiment, the lifting part includes a plurality of hinge groups symmetrically installed, a lifting hydraulic cylinder 47 and a lifting platform 45, one hinge group 46 includes two pairs, one pair includes two hinge rods, the middle parts of the two hinge rods in the same pair are hinged, the other pair in the same group is symmetrically installed at the other side at intervals, the end parts of the hinge rods between the two adjacent hinge groups are hinged and fixed, the end parts of the two sides of the lifting hydraulic cylinder are respectively hinged and fixed with a respective hinge rod in the two hinge groups through a connecting piece, the lifting hydraulic cylinder is in a stroke state, and each hinge group synchronously supports the lifting platform to lift; the lifting hydraulic cylinder is in a return stroke state, and each hinge group synchronously contracts to lower the lifting platform.
In this embodiment, a vertical bracket 42 is installed beside the lifting platform, and the infrared camera 41, the four-in-one gas detector 43 and the wireless communication unit 44 are installed in the vertical bracket; the infrared camera adopts HOPE infrared sensor, and four unification gas detection appearance adopt the brand to be the gaseous detector that the BW model is MCXL-XWHM, the gaseous concentration of detectable oxygen, combustible gas, hydrogen sulfide, carbon monoxide, and wireless communication unit adopts the brand to be ATK, and the model is LORA-01's communication device, and it transmits through the LORA agreement.
The using process of the invention is as follows:
when the invention is used, the method comprises the following steps:
step 1: opening a working well and an exhaust well of the closed construction space, and starting an exhaust fan to exhaust air;
step 2: after the exhaust fan runs, the self-propelled vehicle is hoisted into the closed construction space through the electric tractor;
and step 3: an infrared camera and a four-in-one gas detector carried by a self-advancing vehicle are adopted to carry out infrared imaging and gas detection respectively;
and 4, step 4: after the infrared imaging and the gas detection are finished, an operator hangs down into the closed construction space under the action of the electric tractor;
and 5: the exhaust fan continuously works, and the self-propelled vehicle continuously reciprocates in the closed construction space to perform real-time detection;
step 6: when the self-propelled vehicle detects that the concentration of the corresponding gas exceeds a set threshold value, an abnormal signal is output through the communication of the remote platform;
and 7: after acquiring the abnormal signals, the remote platform respectively outputs control commands to the exhaust fan and the electric traction machine, the exhaust fan increases the exhaust power, and the rope of the electric traction machine descends;
and 8: the exhaust fan continuously operates to increase the exhaust speed until an operator lifts the well from the closed construction space under the action of the electric tractor.
In the invention, the self-propelled vehicle, the electric traction machine and the exhaust fan form a set of self-assembly system. The reciprocating real-time detection is carried out in a closed construction space on the basis of self-propelled vehicles. And then to the video condition in the finite space, gas concentration gathers to upload the data of gathering through wireless communication unit, remote platform then controls the action of electric traction machine and the power of exhaust fan according to the data of uploading. When the gas concentration in the limited space is abnormal, the exhaust fan can actively increase the power and increase the speed of leading out the harmful gas, and the electric tractor actively probes downwards, so that the well-lifting time is shortened.
In the invention, the base is used for carrying equipment and fixing the equipment and the advancing part, the advancing part is used for driving the device to move integrally and controlling the advancing mode and the advancing distance of the device, and the crawler-type structure is adopted, so that the adaptability is strong, and the device is not easy to jam and overturn. Because the gas velocity of flow in the finite space is low, and the layering is easily carried out to gaseous density difference, consequently carry on lift platform in the car of advancing certainly and can detect the gas concentration of different heights, and then realize the detection of horizontal and longitudinal direction.
According to the invention, by applying the using method of the system, air is exhausted in advance before an operator goes into the well, and the self-propelled vehicle is hoisted to a limited space in advance for detection, so that the operator is ensured to be in a safe state when going into the well. Then, the self-propelled vehicle does uninterrupted reciprocating motion in a limited space and is matched with a lifting mechanism to detect different heights. In the active detection process, after the problem of gas concentration abnormity occurs, the remote platform uploads real-time data through the ad hoc network, and the remote platform collects the data and then controls the exhaust fan and the electric traction machine to act. The exhaust fan increases the exhaust power, the cable of the electric tractor descends actively, and after the operator moves to the position of the working well, the cable of the electric tractor descends to a liftable state, so that the response time is shortened until the well ascending is completed.
Claims (6)
1. The utility model provides a finite space is with detecting protection system, includes closed construction space, and this closed construction space's top is provided with working well and exhaust shaft, the tripod is installed to the well head position of working well, and the suspension has electric traction machine in this tripod, the well head position of exhaust shaft is connected its characterized in that with a row of fan through the exhaust pipe: install a car of marcing by oneself in the closed construction space, should advance the car by oneself, electric traction machine and exhaust fan pass through network protocol and form the ad hoc network, the ad hoc network forms communication with a remote platform, installs infrared camera in advancing the car by oneself, four unification gas detection appearance and wireless communication unit, infrared camera, the signal output part of four unification gas detection appearance realize signal intercommunication through wireless communication unit and remote platform, and the motor control end of this remote platform and electric traction machine, the control end of exhaust fan are connected, to electric traction machine and exhaust fan output control command.
2. The detection and protection system for limited space according to claim 1, wherein: the self-propelled vehicle comprises a self-propelled vehicle base, a traveling part and a lifting part, wherein the base is installed at the upper end of the traveling part, and the lifting part is integrally installed at the top of the traveling part.
3. The detection and protection system for limited space according to claim 2, wherein: the advancing part comprises a chassis, a plurality of groups of advancing wheels are symmetrically arranged in the chassis and driven by a diesel engine, and a plurality of advancing wheels on the same side are sleeved with a crawler belt.
4. The detection and protection system for limited space according to claim 2, wherein: the lifting part comprises a plurality of hinge groups, a lifting hydraulic cylinder and a lifting platform which are symmetrically arranged, one hinge group comprises two pairs, one pair comprises two hinge rods, the middle parts of the two hinge rods in the same pair are hinged, the other pair in the same group is symmetrically arranged at the other side at intervals, the end parts of the hinge rods between the two adjacent hinge groups are hinged and fixed, the end parts of the two sides of the lifting hydraulic cylinder are respectively hinged and fixed with one hinge rod in each hinge group through a connecting sheet, the lifting hydraulic cylinder is in a stroke state, and each hinge group synchronously props open the lifting platform to lift; the lifting hydraulic cylinder is in a return stroke state, and each hinge group synchronously contracts to lower the lifting platform.
5. The detection and protection system for limited space according to claim 3, wherein: the infrared camera, the four-in-one gas detector and the wireless communication unit are arranged in the lifting platform; the infrared camera adopts HOPE infrared sensor, and four unification gas detection appearance adopt the brand to be the gaseous detector that the BW model is MCXL-XWHM, the gaseous concentration of detectable oxygen, combustible gas, hydrogen sulfide, carbon monoxide, and wireless communication unit adopts the brand to be ATK, and the model is LORA-01's communication device, and it transmits through the LORA agreement.
6. Use of a detection and protection system for limited spaces according to any of claims 1 to 5, characterized in that: the method comprises the following steps:
step 1: opening a working well and an exhaust well of the closed construction space, and starting an exhaust fan to exhaust air;
step 2: after the exhaust fan runs, the self-propelled vehicle is hoisted into the closed construction space through the electric tractor;
and step 3: an infrared camera and a four-in-one gas detector carried by a self-advancing vehicle are adopted to carry out infrared imaging and gas detection respectively;
and 4, step 4: after the infrared imaging and the gas detection are finished, an operator hangs down into the closed construction space under the action of the electric tractor;
and 5: the exhaust fan continuously works, and the self-propelled vehicle continuously reciprocates in the closed construction space to perform real-time detection;
step 6: when the self-propelled vehicle detects that the concentration of the corresponding gas exceeds a set threshold value, an abnormal signal is output through the communication of the remote platform;
and 7: after acquiring the abnormal signals, the remote platform respectively outputs control commands to the exhaust fan and the electric traction machine, the exhaust fan increases the exhaust power, and the rope of the electric traction machine descends;
and 8: the exhaust fan continuously operates to increase the exhaust speed until an operator lifts the well from the closed construction space under the action of the electric tractor.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113391033A (en) * | 2021-06-10 | 2021-09-14 | 安徽创新检测技术有限公司 | High-efficiency air heavy metal content detection method |
| CN114354850A (en) * | 2021-12-29 | 2022-04-15 | 北京信通泰克科技有限公司 | Intelligent robot environment detection system |
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Application publication date: 20201103 |