CN108613714A - A kind of stainless steel tube coal level measurement device - Google Patents
A kind of stainless steel tube coal level measurement device Download PDFInfo
- Publication number
- CN108613714A CN108613714A CN201810420658.6A CN201810420658A CN108613714A CN 108613714 A CN108613714 A CN 108613714A CN 201810420658 A CN201810420658 A CN 201810420658A CN 108613714 A CN108613714 A CN 108613714A
- Authority
- CN
- China
- Prior art keywords
- stainless steel
- steel tube
- coal
- pressure
- measuring unit
- 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.)
- Granted
Links
- 239000003245 coal Substances 0.000 title claims abstract description 76
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 72
- 239000010935 stainless steel Substances 0.000 title claims abstract description 72
- 238000005259 measurement Methods 0.000 title claims abstract description 34
- 230000001681 protective effect Effects 0.000 claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims abstract 2
- 239000010959 steel Substances 0.000 claims abstract 2
- 238000009434 installation Methods 0.000 claims description 5
- 230000002411 adverse Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims 1
- 239000000843 powder Substances 0.000 claims 1
- 239000000428 dust Substances 0.000 abstract description 7
- 238000004364 calculation method Methods 0.000 abstract 1
- 238000001514 detection method Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000009530 blood pressure measurement Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/14—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measurement of pressure
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The present invention relates to a kind of stainless steel tube coal level measurement devices for coal silo, when being embedded to coal silo dump by measuring the steel pipe, the pressure that coal applies, so that it is determined that the current coal storage of coal silo.Stainless steel tube coal level measurement device combines structures to form by multistage stainless steel tube basic unit and forms, and each unit all includes stainless steel tube and pressure measuring unit.Stainless steel tube is hollow circular-tube, and main function has：It bears the pressure from coal, pressure measuring unit is sent into designated position and guiding and protection pressure measuring unit signal lead in coal bunker；Pressure measuring unit includes pressure sensor and protective shell, main function be detection coal pressure, connection two sections stainless steel tube and protection pressure sensor can in the case where burn into dust, big load and high-frequency are collided steady operation.This device can realize the distributed measurement of coal pressure in coal silo, and by specific calculation method, so as to estimate the real time inventory of coal.
Description
Technical field：
The present invention relates to a kind of stainless steel tube coal level measurement device, more particularly to it is a kind of coal silo measure coal pressure with
Estimate the pressure measurement stainless steel tube of real-time coal reserves.
Background technology：
It is well known that coal silo is generally up to more than ten meters, it can ensure the timely benefit of coal for the real-time estimation of coal amount
It fills, to improve the excessively high alarm of operational paradigm and coal position of system.It is not only time-consuming visually to judge the coal storage in coal silo
Arduously, and since there are dust in coal silo, it is difficult to accurately judge when making, and in view of the height of coal silo, naked eyes
Directly the method for observation and artificial measurement by sound has some potential safety problems, therefore realizes the real-time of coal amount using technological means
Measurement is necessary.
Coal level measurement is carried out under the mal-condition of this burn into dust of coal silo, big load and high-frequency collision, now such as
The present does not have effective technology means still in the market.Conventional material position is in respect of radar, ultrasonic sensor etc., but because working environment is disliked
Bad, influence factor is intricate and can not work normally；Conventional pressure sensor and travel switch is in burn into big load and height
It is not easy to installation under conditions of frequency hit and service life is short.Therefore, design one kind is corrosion-resistant, bearing capacity is strong and anti-dust
Coal level measurement device be necessary.
Invention content：
The purpose of the present invention is to provide a kind of stainless steel tube coal level measurement devices under coal silo.The device can
Under the adverse circumstances of burn into dust, big load and high-frequency collision, coal pressure value is divided by going deep into coal silo
Cloth measures, and estimates real-time coal storage.
The above-mentioned purpose of the present invention is achieved through the following technical solutions：
A kind of stainless steel tube coal level measurement device, it is characterised in that：Structure dress is combined by multistage stainless steel tube basic unit
With into each segment structure is identical, and wherein two sections of interception illustrates.Two sections of stainless steel tube basic units combine structure
Stainless steel tube I, rubber sleeve I, stainless steel tube II, rubber sleeve II, stainless steel tube III, pressure measuring unit I, pressure measuring unit II.
The stainless steel tube I is hollow circular-tube, and endoporus has pipe screw thread up and down, is used for coupling with pressure measuring unit I.Mainly
Effect is subject to the pressure from coal, pressure measuring unit is sent into designated position and guiding and protection pressure measuring unit letter in coal bunker
Number lead I；
The pressure measuring unit I main functions, which are connection stainless steel tube I and stainless steel tube II and protection S type pressure sensors, to be made
It can in the case where burn into dust, big load and high-frequency are collided steady operation.Left semicircle column tube and right semi-circle column tube pass through
It is bolted and is assembled as protective shell, protective shell two sections are pipe external screw thread.Protective shell outer cover rubber sleeve I, plays guarantor
It protects S types pressure sensor and transmits the effect of pressure.S types pressure sensor is threaded with two force-transmitting blocks, and screw thread
There are sufficient surplus, the spacing of force-transmitting block and S type pressure sensors to adjust for length.S type pressure sensors are installed on guarantor
Inside protective case, have in left semicircle column tube and right semi-circle column tube arc surface be used for location and installation S type pressure sensors, force-transmitting block I and
Force-transmitting block II is each passed through left semicircle column tube and the rectangular opening of right semi-circle column tube is contacted with rubber sleeve I.Pressure measuring unit I and stainless steel
Pipe I, stainless steel tube II are coupled by pipe screw thread.Pressure measuring unit II structures are identical as pressure measuring unit I, outer cover rubber sleeve II,
And coupled by pipe screw thread with stainless steel tube II, stainless steel tube III.
Stainless steel tube coal level measurement device is adapted to made of the stainless steel tube basic unit combination structures to form
Different coal silo height can realize coal pressure by carrying out signal collection to the pressure sensor in each section of pressure measuring unit
Distributed measurement.
The present invention has following technique effect using above technical scheme：
1. it is simple in structure, it is readily transported and installs；
2. the present invention can be used under the adverse circumstances of burn into dust, big load and high-frequency collision, service life is long, and with
Coal contact portion is readily disassembled replacement；
3. the S type pressure sensors selected by the present invention have enough ranges；
4. the present invention can carry out distributed measurement to coal pressure can be estimated by the data processing to measuring pressure
Real-time coal position；
5. the present invention can protection signal lead in the presence of a harsh environment, to ensure the stability and accuracy of signal transmission.
6. the present invention can combine the joint number of structure to adapt to the coal silo of different height by adjusting stainless steel tube basic unit.
Description of the drawings：
Invention is further explained below in conjunction with the accompanying drawings；
Fig. 1 is that two sections of stainless steel tube basic units of the present invention combine structural schematic diagram；
Fig. 2 is that two sections of stainless steel tube basic units of the present invention combine the full sectional view of structural front view；
Fig. 3 is that two sections of stainless steel tube basic units of the present invention combine structure sectional view；
Fig. 4 is the full sectional view of the stainless steel tube of the present invention；
Fig. 5 is the axonometric projection view of the pressure sensor of the present invention；
Fig. 6 is the axonometric projection view of the pressure sensor force-transmitting block I of the present invention；
Fig. 7 is the axonometric projection view of the rubber sleeve I of the present invention；
Fig. 8 is the front view of the pressure measuring unit I protective shell installation diagrams of the present invention；
Fig. 9 is the left view of the pressure measuring unit I protective shell installation diagrams of the present invention；
Figure 10 is the front view of the left semicircle column tube of the present invention；
Figure 11 is the full sectional view of the left view of the right semi-circle column tube of the present invention；
Figure 12 is use figure of the present invention in coal silo；
In figure：1. stainless steel tube I, 2. rubber sleeve I, 3. stainless steel tube II, 4. rubber sleeve II, 5. stainless steel tube III, 6. survey
Pressure device I, 601. left semicircle column tubes, 60101. times pipe screw threads, 60102. central segments, 60103. bolts hole, 60104. upper tube spiral shells
Line, 60105. arc surfaces, 60106. rectangular openings, 602. force-transmitting block I, 603. signal lead I, 604. right semi-circle column tubes, 605. pass
Power block II, 606. bolt I, 607. bolt II, 608.S type pressure sensors, 7. pressure measuring unit II, 701. signal lead II.
Specific embodiment：
Present invention will now be described in detail with reference to the accompanying drawings.：
Refering to fig. 1, the present invention combines structures to form by multistage stainless steel tube basic unit and forms, and each segment structure is identical, existing
Two sections therein are intercepted to illustrate.The part that the stainless steel tube coal level measurement device section is contacted with the external world includes stainless steel tube
I1, rubber sleeve I2, stainless steel tube II3, rubber sleeve II4, stainless steel tube III5.
It is hollow-core construction refering to Fig. 2, Fig. 3, Fig. 5, Fig. 8, Fig. 9, Figure 11, inside the stainless steel tube coal level measurement device,
Stainless steel tube I1, stainless steel tube II3 and stainless steel tube III5 utilize pipe screw thread by pressure measuring unit I6, pressure measuring unit II7 respectively
Connection.Pressure measuring unit I6 is identical as the structure of pressure measuring unit II7.The pressure measuring unit I6 includes left semicircle column tube 601, force-transmitting block
I602, signal lead 603, right semi-circle column tube 604, force-transmitting block II605, bolt fastener I606, bolt fastener II607, S type
Pressure sensor 608.Left semicircle column tube 601 is identical as 604 structure of right semi-circle column tube, and the two passes through bolt I606 and bolt I607
Assembly, as pressure measuring unit I protective shells.S types pressure sensor 608 is threaded and force-transmitting block I602 and force-transmitting block
II605 is assembled, and force-transmitting block I602 is identical with force-transmitting block II605 structures, and the length direction of cuboid hangs down with horizontal direction after assembly
Directly.The arc surface 60105 on arc surface fitting left semicircle column tube 601 on S types pressure sensor 608, force-transmitting block I602 are passed through
It rectangular opening 60106 and is contacted with rubber sleeve I2, force-transmitting block II605 passes through the rectangular opening and rubber sleeve I2 of right semi-circle column tube 604
Contact.Signal lead I603 and signal lead II701 is drawn to ground signal receiving terminal, is protected from by stainless steel tube extraneous dry
It disturbs.
Refering to Fig. 4, the stainless steel tube I1 is stainless steel metal pipe, and it is pipe internal thread to manage interior two parts up and down, with survey
The pipe screw thread of pressure device I6 couples.
Refering to Fig. 6, the force-transmitting block I602 is T-type structure, and top is rectangular parallelepiped structure, and lower part is stud, passes through stud
It is assembled with S types pressure sensor 608.
Refering to Fig. 7, the rubber sleeve 2 is circular tube structure, outside pressure measuring unit I6 can be just placed on, with force-transmitting block I602
It is contacted with force-transmitting block II605.
Refering to fig. 10, Figure 11, the left semicircle column tube 601 include lower pipe screw thread 60101, central segment 60102, bolt hole
60103, upper pipe screw thread 60104, arc surface 60105, rectangular opening 60106.Left semicircle column tube 601 is with right semi-circle column tube 604 by one
Multi-diameter shaft is cut, and structure is identical.Lower pipe screw thread 60101, upper pipe screw thread 60104 in left semicircle column tube 601, rectangular opening
60106 assemble post-processing with left semicircle column tube after processing is completed in semicolumn slot and arc surface 60105.Arc surface 60105 is according to S
608 arc size of type pressure sensor is processed.60106 size of rectangular opening can accommodate force-transmitting block I602 just.
Refering to fig. 12, the stainless steel tube coal level measurement device is installed at the top of coal cylinder cabin, in view of the size of coal silo,
More set measuring devices can be arranged, in the hope of the accuracy of measurement data.
Operation principle：
Pressure sensor is embedded in the coal heap of coal silo by the stainless steel tube coal level measurement device, suffered by measurement
Coal heap radial pressure, calculate real-time coal position.Stainless steel tube coal level measurement device can be substantially single by multistage stainless steel tube
Member combination structures to form forms, each unit all has pressure measuring unit, therefore can realize the distributed measurement of coal pressure, and energy
Adapt to different coal silo height.Left semicircle column tube 601 and right semi-circle column tube 604 are used as pressure measuring unit I6 guarantors by bolts assemblies
Protective case is coupled with stainless steel tube I1 and stainless steel tube II3 using pipe screw thread.Pressure measuring unit I6 outer cover rubber sleeves I2.Pressure measurement
S types pressure sensor 608 is housed in device I6 protective shells.S types pressure sensor 608 and force-transmitting block I602 and force-transmitting block II605
It is threaded, force-transmitting block I602 and force-transmitting block II605 are each passed through left semicircle column tube 601, the square on right semi-circle column tube 604
Shape hole is contacted with rubber sleeve I2.Stainless steel tube coal level measurement device gos deep into coal heap, bears the radial load from coal.Rubber
Gum cover I2 is pressurized, and pressure is transmitted to S types pressure sensor 608 by force-transmitting block, is sent to pressure signal outside by signal lead I603
In portion's signal receiver, stainless steel tube I1 protection signal leads I603 makes it not influenced by extraneous adverse circumstances.Signal receives
Device receives the pressure signal from each section of pressure measuring unit, realizes the distributed measurement of pressure, data transmission to Computer Data
Processing, you can estimate real-time coal position.
Claims (5)
1. a kind of stainless steel tube coal level measurement device, described device are：Function, the basic unit that structure illustrates may be implemented, often
One basic unit all can individually or repeat connection used, specifically used length is determines according to actual conditions；Described two sections are not
Rust steel pipe coal level measurement device is two basic units, including stainless steel tube I (1), rubber sleeve I (2), stainless steel tube II (3), rubber
Gum cover II (4), stainless steel tube III (5), pressure measuring unit I (6), pressure measuring unit II (7).
2. stainless steel tube coal level measurement device described in accordance with the claim 1, which is characterized in that the stainless steel tube I (1) is
Hollow circular-tube, endoporus have pipe screw thread up and down, are used for coupling with pressure measuring unit I (6), main function is subject to the pressure from coal
Pressure measuring unit is sent into designated position and guiding and protection pressure measuring unit signal lead I (603) in coal bunker by power.
3. stainless steel tube coal level measurement device described in accordance with the claim 1, which is characterized in that the pressure measuring unit I (6) is main
Effect is that connection stainless steel tube I (1) and stainless steel tube II (3) and protection S types pressure sensor (608) can be in burn into powder
Steady operation in the case that dirt, big load and high-frequency are collided；Left semicircle column tube (601) and right semi-circle column tube (604) pass through spiral shell
Bolt I (606) and bolt II (607) is assembled as protective shell, and protective shell two sections are pipe external screw thread；Rubber is cased with outside protective shell
Gum cover I (2) plays the role of protecting S types pressure sensor (608) and transmits pressure；S types pressure sensor (608) and power transmission
Block I (602), force-transmitting block II (605) are threaded, and the spacing of force-transmitting block and S types pressure sensor (608) can adjust；S
Type pressure sensor (608) is installed on inside protective shell, respectively has two sections in left semicircle column tube (601) and right semi-circle column tube (604)
Arc surface (60105) is used for location and installation S types pressure sensor (608), and force-transmitting block I (602) and force-transmitting block II (605) are worn respectively
The rectangular opening (60106) for crossing left semicircle column tube (601) and right semi-circle column tube (604) is contacted with rubber sleeve I (2)；Pressure measuring unit I
(6) coupled by pipe screw thread with stainless steel tube I (1), stainless steel tube II (3)；Pressure measuring unit II (7) structures and pressure measuring unit I (6)
It is identical, outer cover rubber sleeve II (4), and coupled by pipe screw thread with stainless steel tube II (3), stainless steel tube III (5)；S type pressures
Force snesor (608) has enough ranges, can adapt to adverse circumstances.
4. stainless steel tube coal level measurement device described in accordance with the claim 1, which is characterized in that stainless steel tube coal level measurement device
Structures to form is combined by multistage stainless steel tube basic unit to form, and is adapted to different coal silo height；By being surveyed to each section
Pressure sensor in pressure device, which carries out signal collection, can realize the distributed measurement of coal pressure.
5. stainless steel tube coal level measurement device described in accordance with the claim 1, which is characterized in that stainless steel tube coal level measurement device
Cell parts are easy to process and transport, and can be assembled in use site, be easy to disassembling, assembling and replacing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810420658.6A CN108613714B (en) | 2018-05-04 | 2018-05-04 | Stainless steel pipe coal level measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810420658.6A CN108613714B (en) | 2018-05-04 | 2018-05-04 | Stainless steel pipe coal level measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108613714A true CN108613714A (en) | 2018-10-02 |
| CN108613714B CN108613714B (en) | 2024-06-21 |
Family
ID=63662268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810420658.6A Active CN108613714B (en) | 2018-05-04 | 2018-05-04 | Stainless steel pipe coal level measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108613714B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110745401A (en) * | 2019-11-29 | 2020-02-04 | 河南理工大学 | Automatic coal bunker coal level detection and alarm device based on pressure sensor and use method thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2279593Y (en) * | 1996-06-06 | 1998-04-22 | 马玉民 | Bin level meter |
| CN2574023Y (en) * | 2002-10-29 | 2003-09-17 | 成都中商高新技术开发有限公司 | Optoelectronic stored grain level monitoring device |
| CN2901271Y (en) * | 2006-06-14 | 2007-05-16 | 中国石油天然气集团公司 | Flange diaphragm sealed liquid level and pressure transmitter |
| CN101210899A (en) * | 2006-12-27 | 2008-07-02 | 中国科学院沈阳应用生态研究所 | Method for determining soil moisture and its modified device |
| US20100162812A1 (en) * | 2005-06-16 | 2010-07-01 | Multitrode Pty Ltd | Liquid Level Monitoring Apparatus and Methods |
| CN204142321U (en) * | 2014-10-27 | 2015-02-04 | 无锡昆仑海岸物联科技有限公司 | Barrier film protection throwing static pressure liquid level transmitter |
| CN204535812U (en) * | 2015-03-11 | 2015-08-05 | 牟爱政 | A kind of survey fly ash in electric power plant storehouse, pulverized coal warehouse level-sensing device |
| CN105222947A (en) * | 2015-10-16 | 2016-01-06 | 中国海洋大学 | Spliced type sea bed with range protective device surpasses hole pressure and measures feeler lever |
| CN206038093U (en) * | 2016-07-22 | 2017-03-22 | 上海波汇科技股份有限公司 | Liquid level measurement device of wide range high accuracy |
-
2018
- 2018-05-04 CN CN201810420658.6A patent/CN108613714B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2279593Y (en) * | 1996-06-06 | 1998-04-22 | 马玉民 | Bin level meter |
| CN2574023Y (en) * | 2002-10-29 | 2003-09-17 | 成都中商高新技术开发有限公司 | Optoelectronic stored grain level monitoring device |
| US20100162812A1 (en) * | 2005-06-16 | 2010-07-01 | Multitrode Pty Ltd | Liquid Level Monitoring Apparatus and Methods |
| CN2901271Y (en) * | 2006-06-14 | 2007-05-16 | 中国石油天然气集团公司 | Flange diaphragm sealed liquid level and pressure transmitter |
| CN101210899A (en) * | 2006-12-27 | 2008-07-02 | 中国科学院沈阳应用生态研究所 | Method for determining soil moisture and its modified device |
| CN204142321U (en) * | 2014-10-27 | 2015-02-04 | 无锡昆仑海岸物联科技有限公司 | Barrier film protection throwing static pressure liquid level transmitter |
| CN204535812U (en) * | 2015-03-11 | 2015-08-05 | 牟爱政 | A kind of survey fly ash in electric power plant storehouse, pulverized coal warehouse level-sensing device |
| CN105222947A (en) * | 2015-10-16 | 2016-01-06 | 中国海洋大学 | Spliced type sea bed with range protective device surpasses hole pressure and measures feeler lever |
| CN206038093U (en) * | 2016-07-22 | 2017-03-22 | 上海波汇科技股份有限公司 | Liquid level measurement device of wide range high accuracy |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110745401A (en) * | 2019-11-29 | 2020-02-04 | 河南理工大学 | Automatic coal bunker coal level detection and alarm device based on pressure sensor and use method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108613714B (en) | 2024-06-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104613885B (en) | A kind of tunnel interior conduit monitoring and warning system | |
| CN203274836U (en) | Monitoring system for monitoring floating roof of floating roof tank | |
| CN103216266B (en) | Prevent the pressure detection method of filling pipeline blockage | |
| CN107420105B (en) | The vibration of full face rock tunnel boring machine key position and strain monitoring method | |
| CN105696540A (en) | Measuring method and device for foundation pit deep horizontal displacement and underground water level | |
| WO2019023952A1 (en) | Method for monitoring vibration and strain of key parts of tunnel boring machine | |
| CN102721749A (en) | Acoustic emission detection device and method for detecting bottom of storage tank in confined space | |
| Wu et al. | Development and application of cutterhead vibration monitoring system for TBM tunnelling | |
| CN209342189U (en) | A kind of stainless steel tube coal level measurement device | |
| CN108613714A (en) | A kind of stainless steel tube coal level measurement device | |
| CN101718201A (en) | Construction safety 5-parameter decision method of tunnel drilling and blasting method | |
| CN109443481A (en) | A kind of closed pressure vessel measuring device and level measuring method | |
| CN106323223A (en) | Deformation monitoring and early warning system for highway cutting slope | |
| CN109443284A (en) | A kind of shield machine excavation gap measuring apparatus | |
| CN103620211A (en) | Device for detecting abrasive wear | |
| CN206671361U (en) | Mine laneway wind speed and pressure monitoring system | |
| CN210803469U (en) | Intelligent soil pollution monitoring system | |
| CN218002664U (en) | Automatic weighing device for roadway side drilling pulverized coal | |
| CN207847633U (en) | A kind of interior limit alarm device tunneled of shield machine steel bushing | |
| CN102706545A (en) | Automatic measuring device for characteristic parameters of irrigation sprinkler | |
| CN205644892U (en) | Underground works safe risk perceptual arrangement that is under construction based on BIM | |
| CN108745456B (en) | Jaw breaker angle monitoring device | |
| CN109296373B (en) | Vibration and strain monitoring method for main beam and connecting flange of full-face rock tunnel boring machine | |
| CN206492553U (en) | A kind of viscous glutinous thing cleaning plant in crusher roller surface | |
| CN205562823U (en) | Rock burst prediction system |
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 | ||
| GR01 | Patent grant |