CN114023041A - Digital system for pit operation - Google Patents
Digital system for pit operation Download PDFInfo
- Publication number
- CN114023041A CN114023041A CN202111430733.5A CN202111430733A CN114023041A CN 114023041 A CN114023041 A CN 114023041A CN 202111430733 A CN202111430733 A CN 202111430733A CN 114023041 A CN114023041 A CN 114023041A
- Authority
- CN
- China
- Prior art keywords
- gas
- pit
- alarm
- work according
- support
- Prior art date
- 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.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims abstract description 32
- 239000007789 gas Substances 0.000 claims description 73
- 238000004891 communication Methods 0.000 claims description 21
- 238000007789 sealing Methods 0.000 claims description 7
- 239000002341 toxic gas Substances 0.000 claims description 7
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 6
- 230000001960 triggered effect Effects 0.000 claims description 4
- 230000000007 visual effect Effects 0.000 claims description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 3
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 3
- 229910000037 hydrogen sulfide Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 abstract description 17
- 238000010276 construction Methods 0.000 abstract description 11
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 206010017740 Gas poisoning Diseases 0.000 description 1
- 208000005374 Poisoning Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/12—Alarms for ensuring the safety of persons responsive to undesired emission of substances, e.g. pollution alarms
- G08B21/14—Toxic gas alarms
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/20—Undercarriages with or without wheels
- F16M11/24—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other
- F16M11/26—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other by telescoping, with or without folding
- F16M11/32—Undercarriages for supports with three or more telescoping legs
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Toxicology (AREA)
- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The invention discloses a digitalization system for pit operation, which comprises: the supporting system comprises two supports, a chain guide rail and an electric hoist, wherein each support is connected into a tripod shape through support legs of three tubular structures, two ends of the chain guide rail are respectively arranged on the two supports, and the electric hoist is slidably arranged on the chain guide rail. The tripod is arranged as a support of the support, so that the structure is simpler, the construction is convenient, the structure is stable after the construction, and meanwhile, the support leg support of the tubular structure has lighter overall weight, smaller volume and easier carrying and construction; a special gas detection system is arranged, so that the gas detection continuity is stronger and safer; the alarm system is arranged to give an alarm and inform the site in time, so that the safety of the site is improved; the video monitoring system is arranged to realize multi-person monitoring through video shooting, so that the monitoring effectiveness is improved, and the safety degree is further enhanced.
Description
Technical Field
The invention relates to the technical field of excavation construction, in particular to a digital system for pit operation.
Background
In the process of foundation pit construction, a well pit needs to be dug. In the well pit excavation and follow-up operation, the method relates to well head support construction, material lifting and gas monitoring, and is necessary work content. The application of the wellhead support is to establish a guardrail baffle based on the support to prevent other impurities from rolling into a foundation pit. The lifting is generally completed by a boom winch. In the prior art, toxic gas monitoring operations are only detected once in the work preparation phase using a low precision handheld device.
The deep foundation pit construction by using the traditional facilities mainly has the following defects:
firstly, the scaffold or the angle steel welding bracket has large volume and heavy weight, and is time-consuming and labor-consuming to transport and carry; the scaffold connecting piece is too many, and the trouble that takes place a connecting piece is not hard up, has great safety risk promptly.
Secondly, the gas detection precision of the traditional handheld gas sensor in the operation site is low, periodic detection of toxic gas in the foundation pit cannot be realized, and further, the situation that the toxic gas detection is invalid exists, so that the safety risk of gas poisoning of personnel at the bottom of the foundation pit occurs;
thirdly, the early warning system is absent or not obvious, the traditional operation site lacks the early warning system, or the site noise is large in the operation state, so that the response is not timely when the risk occurs, and finally a safety accident is caused;
fourthly, the operators are easy to have a lucky psychology, risk operation or irregular operation, and the field safety guarantee personnel may have working negligence, namely, the visual monitoring is not continuous and unstable, so that the safety is not facilitated.
Disclosure of Invention
In view of the above-mentioned drawbacks, an object of the present invention is to provide a digitizer system for pit work, which solves the problems corresponding to the above-mentioned four drawbacks.
The invention is realized by the following technical scheme:
a digitizing system for pit jobs, comprising:
the supporting system comprises two supports, a chain guide rail and an electric hoist, each support is connected into a tripod shape through three support legs of a tubular structure, two ends of the chain guide rail are respectively arranged on the two supports, and the electric hoist is slidably arranged on the chain guide rail;
the gas detection system is communicated with the bottom of the pit and is used for detecting gas at the bottom of the pit;
the alarm system is a trigger type alarm system so as to generate an alarm after being triggered;
and the video monitoring system is used for on-site monitoring.
In some embodiments, the legs are made of telescoping rods; the bottom ends of the supporting legs are provided with bottom plates so as to increase the contact area with the ground.
In some embodiments, the gas detection system comprises a gas pump, a gas pipe and a gas detector, one end of the gas pipe is inserted into the gas detector, the other end of the gas pipe extends into the pit, and the gas pump is arranged in the middle of the gas pipe so as to pump gas in the pit into the gas detector; a section of the air pipe extending into the pit is provided with a plurality of branch pipes, the tail end of each branch pipe is provided with a filter head, the filter head is provided with an air hole, and the filter head is provided with a sealing cap for sealing the filter head; the plurality of branch tubes are different in length and are arranged along the air tube.
In some embodiments, the gas detector includes an oxygen sensor, a hydrogen sulfide sensor, a carbon monoxide sensor, and a methane sensor for acquiring the gas to be detected.
In some embodiments, the alarm system comprises an audible and visual alarm.
In some embodiments, the alarm system is coupled to the gas detection system to effect an alarm when a toxic gas is detected.
In some embodiments, the alarm system is connected with a communication module, so that remote alarm triggering and alarm control are realized through the communication module.
In some embodiments, the system further comprises a background management system and a communication module, wherein the gas detection system, the alarm system and the video monitoring system are connected to the communication module, and send data to the background management system through the communication module, so as to realize remote monitoring.
In some embodiments, the bracket comprises a connecting plate, and the top ends of the three legs are circumferentially and rotatably arranged on the connecting plate.
In some embodiments, three of the legs are rotatably connected to the connecting disc in a direction of a center line of the connecting disc.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the tripod is arranged as a support of the support, so that the structure is simpler, the construction is convenient, the structure is stable after the construction, and meanwhile, the support leg support of the tubular structure has lighter overall weight, smaller volume and easier carrying and construction; a special gas detection system is arranged, so that the gas detection continuity is stronger and safer; the alarm system is arranged to give an alarm and inform the site in time, so that the safety of the site is improved; the video monitoring system is arranged to realize multi-person monitoring through video shooting, improve monitoring effectiveness and further enhance safety.
Drawings
In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and that for those skilled in the art, other related drawings can be obtained from these drawings without inventive effort. In the drawings:
FIG. 1 is a schematic diagram of a system according to the present invention;
FIG. 2 is a schematic diagram of a system according to the present invention;
FIG. 3 is a schematic structural view of a bracket according to an embodiment of the present invention;
FIG. 4 is a schematic view of a combination structure of two brackets according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a gas detection system according to an embodiment of the present invention;
fig. 6 is a schematic structural view of an air tube according to an embodiment of the present invention.
Reference numbers and corresponding part names in the drawings:
the electric hoist comprises a supporting system-100, a bracket-110, a supporting leg-111, a bottom plate-112, a connecting disc-113, a chain guide rail-120 and an electric hoist-130;
the gas detection system comprises a gas detection system-200, a gas pump-210, a gas pipe-220 and a gas detector-230;
the system comprises an alarm system-300, a video monitoring system-400, a communication module-500 and a background management system-600.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not used as limitations of the present invention.
Referring to fig. 1-5, a digitizer system for pit work includes a support system 100, a gas detection system 200, an alarm system 300, and a video surveillance system 400.
Each support 110 is connected in a tripod-like manner by three legs 111 of tubular configuration. In a specific embodiment, as shown in fig. 3-4, two brackets 110 are disposed on two sides of the pit, and two ends of the chain guide 120 are respectively disposed on the two brackets 110, so that the chain guide 120 is suspended above the pit, and the electric hoist 130 is slidably disposed on the chain guide 120, so as to facilitate soil taking and other devices and components being placed in the pit by the electric hoist 130.
The stand 110 is formed in a tripod-like structure by the legs 111, and has advantages of simple construction and stable structure. In addition, the material of the tubular structure is lighter compared with the solid material and the structure. In specific implementation, the supporting legs 111 are made of alloy materials, and have the advantages of high strength and light weight.
In some embodiments, the legs 111 are made of telescoping rods; the bottom ends of the legs 111 are provided with bottom plates 112 to increase a contact area with the ground.
In some embodiments, the bracket 110 includes a connection plate 113, and the top ends of the three legs 111 are circumferentially rotatably disposed on the connection plate 113.
In some embodiments, three legs 111 are rotatably connected to the connecting plate 113 in a direction of a center line of the connecting plate 113.
The gas detection system 200 is used for detecting gas in the pit, so as to achieve the effect of monitoring toxic gas in real time or periodically, and avoid poisoning. Gas detection system 200 is connected to the bottom of the pit.
In some embodiments, as shown in fig. 5 and 6, the gas detection system 200 includes a gas pump 210, a gas pipe 220 and a gas detector 230, one end of the gas pipe 220 is inserted into the gas detector 220, the other end extends into the pit, and the gas pump 210 is disposed in the middle of the gas pipe 220 to pump the gas in the pit into the gas detector 230; a section of the air pipe 220 extending into the pit is provided with a plurality of branch pipes 221, the tail end of each branch pipe 221 is provided with a filter head 240, the filter head 240 is provided with an air hole, and the filter head 240 is provided with a sealing cap 250 for sealing the filter head 240; the plurality of branch pipes 221 are different in length and are disposed along the air pipe 220.
A plurality of branch pipes 221 with different lengths are arranged on the air pipe 200 so as to extract air at different depth positions. By providing different lengths, it is also possible to provide all the branch pipes 221 at the same height in some depths, thereby increasing the amount of intake air. The filter head 400 is used to prevent fine impurities from entering the air pipe 220. By providing the sealing cap 250, the corresponding branch pipe 221 is closed when necessary, and the branch pipe 221 at the position is not used for air extraction (for example, a gas at some depth position is judged to have an excessive concentration of a single component, which interferes with analysis and detection, and is not suitable for extraction).
In specific implementation, the filter head can be made of metal materials so as to use the self weight of the filter head as a balancing weight.
Further, in some embodiments, the gas detector 230 includes an oxygen sensor, a hydrogen sulfide sensor, a carbon monoxide sensor, and a methane sensor for acquiring the gas to be detected to detect various harmful gases or essential gases.
The alarm system 300 is used to generate alarm signals based on various conditions. Alarm system 300 is a triggered alarm system to effect the generation of an alarm upon being triggered. The specific triggering mode of the alarm system 300 can be divided into various modes, such as remote control triggering based on network communication, operation terminal based on site, or signal generated based on harmful gas detection, signal obtained by video detection, and the like.
Further, in some embodiments, the alarm system 300 includes an audible and visual alarm to ensure alarm efficiency.
Further, in some embodiments, alarm system 300 interfaces with gas detection system 200 to implement an alarm when a toxic gas is detected. In specific implementation, the gas detection system 200 generates a data signal according to the gas detection result, and the data signal is transmitted to a control module, and after the control module generates a signal judgment, the alarm signal is transmitted to the alarm system 300. That is, the gas detection system 200 is connected to the alarm system 300 through the control module.
In some embodiments, the alarm system 300 is interfaced with a communication module 500 to enable remote alarm triggering and alarm control via the communication module 500. When implemented, the communication module 500 may be a communication module based on internet hardware support, such as WIFI, or a 4G and 5G communication module based on a telecommunication communication network.
In particular implementations, the gas detection system 200, the alarm system 300, and the control box of the video surveillance system 400 are disposed on the support 110.
In some embodiments, the system further comprises a background management system 600 and a communication module 500, wherein the gas detection system 200, the alarm system 300 and the video monitoring system 400 access the communication module 500 and transmit data to the background management system 600 through the communication module 500 to realize remote monitoring.
The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A digitizing system for pit operations, comprising:
the supporting system (100) comprises two brackets (110), a chain guide rail (120) and an electric hoist (130), wherein each bracket (110) is connected into a tripod shape through three support legs (111) of a tubular structure, two ends of the chain guide rail (120) are respectively arranged on the two brackets (110), and the electric hoist (130) is slidably arranged on the chain guide rail (120);
the gas detection system (200), the gas detection system (200) is connected to the bottom of the pit for detecting the gas at the bottom of the pit;
the alarm system (300), the alarm system (300) is a trigger type alarm system, so as to generate an alarm after being triggered;
a video surveillance system (400), the video surveillance system (400) for on-site surveillance.
2. Digitalization system for pit work according to claim 1, characterized in that the legs (111) are made with telescopic rods; the bottom ends of the supporting feet (111) are provided with bottom plates (112) to increase the contact area with the ground.
3. The digitizer system for pit work according to claim 1, wherein the gas detection system (200) comprises a gas pump (210), a gas pipe (220) and a gas detector (230), one end of the gas pipe (220) is inserted into the gas detector (220), the other end extends into the pit, and the gas pump (210) is disposed in the middle of the gas pipe (220) to pump the gas in the pit into the gas detector (230); a section of the air pipe (220) extending into the pit is provided with a plurality of branch pipes (221), the tail end of each branch pipe (221) is provided with a filter head (240), the filter heads (240) are provided with air holes, and the filter heads (240) are provided with sealing caps (250) for sealing the filter heads (240); the plurality of branch pipes (221) are different in length and are disposed along the air pipe (220).
4. Digitalization system for pit work according to claim 3, characterized in that the gas detector (230) comprises an oxygen sensor, a hydrogen sulfide sensor, a carbon monoxide sensor and a methane sensor for taking the gas to be detected.
5. Digitalization system for pit work according to claim 1, characterized in that the alarm system (300) comprises an audible and visual alarm.
6. The digitizer system for pit work according to claim 1 or 4 or 5, wherein the alarm system (300) is connected to the gas detection system (200) to realize an alarm when toxic gas is detected.
7. Digitalization system for pit work according to claim 6, characterized in that the alarm system (300) has access to a communication module (500) for remote alarm triggering and alarm control by means of the communication module (500).
8. The digitizer system for pit work according to claim 1, further comprising a background management system (600) and a communication module (500), the gas detection system (200), alarm system (300) and video surveillance system (400) access the communication module (500) and send data to the background management system (600) through the communication module (500) for remote surveillance.
9. Digitalization system for pit work according to claim 1 or 2, characterized in that the support (110) comprises a land (113), the top ends of the three legs (111) being circumferentially rotatably arranged to the land (113).
10. Digitalization system for pit work according to claim 9, characterized in that three legs (111) are connected to the land (113) rotatably towards the center line of the land (113).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111430733.5A CN114023041A (en) | 2021-11-29 | 2021-11-29 | Digital system for pit operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111430733.5A CN114023041A (en) | 2021-11-29 | 2021-11-29 | Digital system for pit operation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114023041A true CN114023041A (en) | 2022-02-08 |
Family
ID=80066905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111430733.5A Pending CN114023041A (en) | 2021-11-29 | 2021-11-29 | Digital system for pit operation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114023041A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115100821A (en) * | 2022-07-22 | 2022-09-23 | 国网新疆电力有限公司克州供电公司 | Device for monitoring operation environment in process of excavating foundation pit |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210366718U (en) * | 2019-08-01 | 2020-04-21 | 成都西蜀家和电器有限公司 | Light transformer core hoist device |
| CN211292825U (en) * | 2019-12-30 | 2020-08-18 | 山东江铄石油科技有限公司 | Combustible gas detecting instrument |
| CN214738092U (en) * | 2021-03-24 | 2021-11-16 | 国网山西送变电工程有限公司 | Integrated equipment for deep foundation pit operation |
| CN214832738U (en) * | 2021-05-19 | 2021-11-23 | 广西建工第一建筑工程集团有限公司 | Deep foundation pit monitoring device |
-
2021
- 2021-11-29 CN CN202111430733.5A patent/CN114023041A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210366718U (en) * | 2019-08-01 | 2020-04-21 | 成都西蜀家和电器有限公司 | Light transformer core hoist device |
| CN211292825U (en) * | 2019-12-30 | 2020-08-18 | 山东江铄石油科技有限公司 | Combustible gas detecting instrument |
| CN214738092U (en) * | 2021-03-24 | 2021-11-16 | 国网山西送变电工程有限公司 | Integrated equipment for deep foundation pit operation |
| CN214832738U (en) * | 2021-05-19 | 2021-11-23 | 广西建工第一建筑工程集团有限公司 | Deep foundation pit monitoring device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115100821A (en) * | 2022-07-22 | 2022-09-23 | 国网新疆电力有限公司克州供电公司 | Device for monitoring operation environment in process of excavating foundation pit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114023041A (en) | Digital system for pit operation | |
| CN104266083A (en) | Portable pipeline underground detection device and work method thereof | |
| CN214149323U (en) | Inclination monitoring device for high-rise building | |
| CN111851511A (en) | Integrated intelligent machine for deep foundation pit operation | |
| CN204212184U (en) | The full-automatic inclination measurement system of bracing of foundation pit wall | |
| CN107228652A (en) | Photovoltaic grounded screen with depression warning system | |
| CN104563170B (en) | Offshore wind farm single-pile foundation horizontal bearing capacity tests counterforce device and its construction method | |
| CN106882716A (en) | One kind splits pre-alarming device and method for winding of rotary drilling rig steel wire rope fracture prevention | |
| CN110080303B (en) | Intelligent blind well monitoring system | |
| CN208872263U (en) | A kind of management high-supported formwork real-time monitoring and alarming | |
| CN204141255U (en) | Portable pipe down-hole sniffer | |
| CN205977278U (en) | Judge device of tunnel stability | |
| CN210920776U (en) | Detect support and use this gas detection device who detects support | |
| CN214826079U (en) | Novel oil tank floating plate inclination detection device | |
| CN112525150A (en) | Building foundation settlement monitoring device | |
| CN208255093U (en) | Vertical pipe internal X-ray non-destructive testing device | |
| CN216517042U (en) | Hole pile excavation integrated equipment for high-voltage line iron tower | |
| CN201650347U (en) | Safety escape in coal mines or tunnels | |
| CN112833857A (en) | Real-time displacement multi-point monitor for engineering foundation pit | |
| CN218644338U (en) | Portable underground patrol monitoring device | |
| CN217466906U (en) | Industrial land soil heavy metal pollution detection device | |
| CN220473464U (en) | Tunnel tunneling section suspension type gas detection device | |
| CN205301287U (en) | Poisonous gas sensor | |
| CN215101533U (en) | Deep foundation pit operation assembled frame | |
| CN214895858U (en) | Underground karst cave detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220208 |