CN109443436A - Slope runoff overall process automated watch-keeping facility - Google Patents
Slope runoff overall process automated watch-keeping facility Download PDFInfo
- Publication number
- CN109443436A CN109443436A CN201811415551.9A CN201811415551A CN109443436A CN 109443436 A CN109443436 A CN 109443436A CN 201811415551 A CN201811415551 A CN 201811415551A CN 109443436 A CN109443436 A CN 109443436A
- Authority
- CN
- China
- Prior art keywords
- bucket
- measurement
- water
- pouring
- yaw
- 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 77
- 238000005259 measurement Methods 0.000 claims abstract description 61
- 239000007788 liquid Substances 0.000 claims abstract description 13
- 238000005303 weighing Methods 0.000 claims abstract description 11
- 239000013049 sediment Substances 0.000 abstract description 11
- 238000013461 design Methods 0.000 abstract description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 238000005070 sampling Methods 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 239000004576 sand Substances 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
Abstract
Slope runoff overall process automated watch-keeping facility is related to field of measuring technique, including measuring bucket (1), weighing sensor, liquid level sensor (2) and control system, it measures bucket (1) bottom and is equipped with mounting (3), measurement bucket (1) is hinged on mounting (3), mounting (3) is equipped with pouring device, measurement bucket (1) can be pushed to overturn along the articulated shaft (4) of itself and mounting (3) to pour out water, the top of measurement bucket (1) is equipped with the division box connecting with runoff water outlet, division box includes shaking device and water diversing head (5), water diversing head (5) is rotationally connect with runoff water outlet, it is controlled by shaking device and realizes yaw movement.Have the advantages that discharge water sample is fireballing using the design of pouring device, normal flow process will not be hindered, while two measurement buckets alternating conjunction measuring run-offs and sediment content will not be generated and be interfered with each other, and further improve the real-time and accuracy of measurement.
Description
Technical field
The present invention relates to field of measuring technique, and in particular to run-off and silt content is automatic during a kind of slope runoff
Measuring device.
Background technique
In research soil and water conservation and soil loss monitoring work, bayonet station and slope runoff cell are in all previous rainfall
The run-off and sediment content of middle generation are highly important two observation indexs, to water and soil resources protection and ecological environment
Improve all significant.It is mainly currently based on artificial observation to the monitoring of run-off and sediment content.Such as slope runoff
The measurement of the run-off of cell needs Observation personnel to pass through water-level measuring post at the scene to measure and record height of water level in afflux pond, return
The runoff volume of indoor calculating single rainfall.It is equal that the measurement of sediment content usually wants scene to stir afflux pool inner water and silt
It is even, water sample is then acquired, then take interior and be filtered drying, the average sediment content that single rainfall generates is calculated after weighing.
Not only measurement period is long for manual measurement, time and effort consuming, and measurement result is easy by interference from human factor, can not be real-time continuous
Overall process monitoring.
Currently, disclosing measuring device that is several while measuring run-off and sediment content, such as Publication No. in the market
The Chinese patent of CN105371904A and CN104165817B, the common feature of the two are all (to be surveyed using a water sampling device
Measuring tank), and water sample is discharged in bottom cooperation stock layout valve.The design of this structure has two, one be single sampler without
Method excludes adjacent water sample twice and enters influencing each other for discharge.I.e. single sampler is in the case where no water sample sampling valve door controls
(Chinese patent of CN104165817B), when water level reaches setting height, newly generated diameter while water sample is discharged in stock layout valve
Stream can flow into measurement bucket sampler (measurement bucket) together, and undischarged water sample and the water sample newly entered mix, it is clear that can not
Accurate measurement run-off and quantity of sand and mud.If be combined in the case where the control of water sample sampling valve door (CN105371904A), when excessive
Head piece detects that overflow is closed and enters valve, and newly generated runoff can be blocked on outer at this time, needs to wait for controller measurement runoff
Then amount and sediment content open the runoff in stock layout valve discharge sampler, also to carry out empty leaching cleaning sampler, finally
Sample introduction valve can be opened.This waiting process is excessively complicated very long, in situation very big for run-off, can seriously hinder just
Normal runoff process, to influence the real-time and accuracy of measurement.Second is that drain valve drainage speed is excessively slow, and easily damages
It is bad.Drain valve (solenoid valve) design is generally used for discharge clear water, will be prone to wear when being used to and the big water sample of silt content being discharged,
Valve body can be blocked by causing when poorly sealed leak or huge quantity of sand and mud can not open.And the latus rectum of drain valve is usually no more than
DN50, discharge water sample speed is slow, extends water sample efflux time.It equally will affect the real-time and accuracy of measurement.
Summary of the invention
The technical problems to be solved by the present invention are: providing a kind of slope runoff overall process automated watch-keeping facility, diameter is avoided
It influences each other between adjacent water sample in flow and sediment content measurement process and problem that water sample water discharge time is too long, really
Realize the purpose quickly, in real time, accurately measured slope runoff amount and sediment content.
The technical solution of the invention is as follows: slope runoff overall process automated watch-keeping facility, including measurement bucket, weighing and sensing
Device, liquid level sensor and control system, weighing sensor are used to weigh the quality of measurement inner bucket water sample, and liquid level sensor is for examining
The liquid level of measurement bucket, weighing sensor and liquid level sensor are separately connected with control system, and the measurement bucket is to be disposed adjacent
Two, measurement bucket bottom be equipped with mounting, measurement bucket be hinged on mounting, mounting be equipped with pouring device, pass through pouring device
Its articulated shaft with mounting of measurement bucket edge can be pushed to overturn to pour out water, the top for measuring bucket is equipped with to be connect with runoff water outlet
Division box, division box includes shaking device and water diversing head, and water diversing head is rotationally connect with runoff water outlet, passes through pendulum
Yaw movement is realized in head device control, and the water for flowing into runoff water outlet is alternately allocated in two measurement buckets, and pour dress
It sets and is connect respectively with the control system with shaking device.
The solution have the advantages that: have the advantages that discharge water sample is fireballing using the design of pouring device, will not hinder
Hinder normal flow process, while two measurement bucket alternating conjunction measuring run-offs and sediment content will not be generated and be interfered with each other, into
One step improves the real-time and accuracy of measurement.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Specific embodiment
As shown in Figure 1, slope runoff overall process automated watch-keeping facility, including measurement bucket 1, weighing sensor, level sensing
Device 2 and control system, weighing sensor are used to weigh the quality of water sample in measurement bucket 1, and liquid level sensor 2 is fixed on measurement bucket 1
The outer surface of vertical surface side wall, for detecting the liquid level of water sample in measurement bucket 1, weighing sensor and liquid level sensor 2 with
Control system is separately connected, and the measurement bucket 1 is two be disposed adjacent, and measurement 1 bottom of bucket is equipped with mounting 3, and measurement bucket 1 is hinged
On mounting 3, mounting 3 is equipped with pouring device, measurement bucket 1 can be pushed along the articulated shaft 4 of itself and mounting 3 by pouring device
Water is poured out in overturning, and the top of measurement bucket 1 is equipped with the division box connecting with runoff water outlet, and division box includes shaking device
With water diversing head 5, water diversing head 5 is rotationally connect with runoff water outlet, is controlled by shaking device and is realized yaw movement, and being used for will
The water that runoff water outlet flows into is alternately allocated in two measurement buckets 1, and pouring device and shaking device are with the control respectively
System connection.
The pouring device includes pouring connecting rod 6, pouring swing rod 7 and pouring motor 8, and pouring connecting rod 6 is hinged on measurement bucket 1
Bucket wall on, 7 one end of pouring swing rod is fixedly connected with the output end of pouring motor 8, and the other end and pouring connecting rod 6 are hinged, is poured
Motor 8 is fixed on the mounting 3.
The measurement bucket 1 is placed on weighing sensor by mounting 3.
The shaking device includes yaw connecting rod 9, yaw swing rod 10 and yaw motor 11, and yaw connecting rod 9 is hinged on a point water
On first 5,10 one end of yaw swing rod is fixedly connected with the output end of yaw motor 11, and the other end and yaw connecting rod 9 are hinged, passes through pendulum
Head motor 11 can drive water diversing head 5 to realize and swing.
Pipe collar 12 is fixed on the water diversing head 5, the yaw connecting rod 9 is hinged on pipe collar 12.
The water diversing head 5 is fixed by pipe support 13, and water diversing head 5 is rotatably connected on pipe support 13, the yaw motor
11 are fixedly connected with pipe support 13.Pipe support 13 is equipped with one for hanging the circular hole of water diversing head 5, and water diversing head 5 is through in the circular hole, by
The annular retaining ring 14 being fixed on water diversing head 5 limits, and is suspended on water diversing head 5 on pipe support 13.Settable axis at annular retaining ring 14
It holds.
The liquid level sensor 2 is fixed on the side wall of measurement bucket 1.
The bucket shape container of the trapezoidal upper opening in the measurement preferably longitudinal section of bucket 1, the two of front and back pouring direction
Side wall is inclined surface, and left and right sides wall is vertical surface, and bottom is plane.
It is catchmented using double measurement buckets, hydroseparator structure and controller constitute slope runoff overall process automated watch-keeping facility.Slope surface
Runoff is injected into first measurement bucket by water diversing head, and when water level reaches setting height, liquid level sensor is sent out to control system
Water level arriving signal out, control system control water diversing head and turn to, and water sample are injected another measurement bucket, at this time control system root
According in the first measurement bucket liquid level and water sample weight calculate run-off and silt content, and be stored in system, note amount knot
Water sample is outwelled after beam, completes the measurement process of the first measurement bucket.After the second measurement bucket water level reaches setting height, control system
System again control water diversing head turn to first measurement bucket, at this time can to second measurement bucket in run-off and sediment content survey
It measures and stores, outwell water sample after note amount, complete a measurement period, slope runoff overall process can and so on be carried out
Automatic monitoring.
Claims (8)
1. slope runoff overall process automated watch-keeping facility, including measurement bucket (1), weighing sensor, liquid level sensor (2) and control
System, which is characterized in that measurement bucket (1) is two be disposed adjacent, and measurement bucket (1) bottom is equipped with mounting (3), measures bucket
(1) be hinged on mounting (3), mounting (3) be equipped with pouring device, by pouring device can push measurement bucket (1) along its with
Water is poured out in articulated shaft (4) overturning of mounting (3), and the top of measurement bucket (1) is equipped with the division box connecting with runoff water outlet,
Division box includes shaking device and water diversing head (5), and water diversing head (5) rotationally connect with runoff water outlet, filled by yaw
It sets control and realizes yaw movement, the water for flowing into runoff water outlet is alternately allocated in two measurement buckets (1), pouring device
It is connect respectively with the control system with shaking device.
2. slope runoff overall process automated watch-keeping facility as described in claim 1, which is characterized in that the pouring device includes
Pouring connecting rod (6), pouring swing rod (7) and pouring motor (8), pouring connecting rod (6) are hinged on the bucket wall of measurement bucket (1), are poured
Swing rod (7) one end is fixedly connected with the output end of pouring motor (8), the other end and pouring connecting rod (6) hingedly, pouring motor (8)
It is fixed on the mounting (3).
3. slope runoff overall process automated watch-keeping facility as claimed in claim 1 or 2, which is characterized in that the measurement bucket (1)
It is placed on weighing sensor by mounting (3).
4. slope runoff overall process automated watch-keeping facility as described in claim 1, which is characterized in that the shaking device includes
Yaw connecting rod (9), yaw swing rod (10) and yaw motor (11), yaw connecting rod (9) are hinged on water diversing head (5), yaw swing rod
(10) one end is fixedly connected with the output end of yaw motor (11), and the other end and yaw connecting rod (9) hingedly, pass through yaw motor
(11) water diversing head (5) can be driven to realize to swing.
5. slope runoff overall process automated watch-keeping facility as claimed in claim 4, which is characterized in that on the water diversing head (5)
It is fixed with pipe collar (12), the yaw connecting rod (9) is hinged on pipe collar (12).
6. slope runoff overall process automated watch-keeping facility as described in claim 4 or 5, which is characterized in that the water diversing head (5)
Fixed by pipe support (13), water diversing head (5) is rotatably connected on pipe support (13), the yaw motor (11) and pipe support (13)
It is fixedly connected.
7. slope runoff overall process automated watch-keeping facility as described in claim 1, which is characterized in that the liquid level sensor
(2) it is fixed on the side wall of measurement bucket (1).
8. slope runoff overall process automated watch-keeping facility as described in claim 1, which is characterized in that the measurement bucket 1 is vertical
The two sidewalls of the bucket shape container of the upper opening trapezoidal to section, front and back pouring direction are inclined surface, and left and right sides wall is straight
Facade, bottom are plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811415551.9A CN109443436A (en) | 2018-11-26 | 2018-11-26 | Slope runoff overall process automated watch-keeping facility |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811415551.9A CN109443436A (en) | 2018-11-26 | 2018-11-26 | Slope runoff overall process automated watch-keeping facility |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109443436A true CN109443436A (en) | 2019-03-08 |
Family
ID=65554335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811415551.9A Withdrawn CN109443436A (en) | 2018-11-26 | 2018-11-26 | Slope runoff overall process automated watch-keeping facility |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109443436A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110031356A (en) * | 2019-05-10 | 2019-07-19 | 长春合利水土保持科技有限公司 | Sediment content measuring device in a kind of portable runoff |
| CN110095163A (en) * | 2019-06-20 | 2019-08-06 | 西安新汇泽测控技术有限公司 | Full runoff and sediment automonitor |
| CN111811977A (en) * | 2020-06-18 | 2020-10-23 | 西安三智科技有限公司 | Runoff sediment content and flow measurement device and measurement method |
| CN114062185A (en) * | 2021-11-16 | 2022-02-18 | 黑龙江省水利科学研究院 | But automatic measuring device of single-bucket turnover type runoff silt of automatically cleaning |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101000335A (en) * | 2006-12-15 | 2007-07-18 | 中国农业科学院农业资源与农业区划研究所 | Automatic surveying and sampling device for runoff water flow of farmland or hillside fields |
| CN101017104A (en) * | 2007-02-26 | 2007-08-15 | 中国科学院、水利部成都山地灾害与环境研究所 | Measurement system for interflow of thin-layer sloping land |
| CN101067566A (en) * | 2006-12-14 | 2007-11-07 | 中国科学院东北地理与农业生态研究所 | Movable earth surface runoff observer |
| CN202181101U (en) * | 2011-08-11 | 2012-04-04 | 无锡市德瑞包装设备制造有限公司 | Reverse turning and dumping device |
| CN103323068A (en) * | 2013-06-19 | 2013-09-25 | 农业部环境保护科研监测所 | Automatic surface runoff metering device |
| CN103389146A (en) * | 2013-06-25 | 2013-11-13 | 刘健 | Self-washing water and soil loss sampling and monitoring device for slope runoffs |
| CN104165817A (en) * | 2014-08-27 | 2014-11-26 | 长春工程学院 | Real-time runoff sediment content measuring device and measuring method |
| CN203981228U (en) * | 2014-07-21 | 2014-12-03 | 福建农林大学 | A kind of positive displacement slope runoff counting flowmeter |
| CN105371904A (en) * | 2015-10-16 | 2016-03-02 | 西北农林科技大学 | Device for real-time automatic measurement of runoff mud and sand and measurement method |
| CN105798029A (en) * | 2016-05-18 | 2016-07-27 | 无锡市金沙田科技有限公司 | Internal and external comprehensive washing device for garbage can |
| CN205996187U (en) * | 2016-08-30 | 2017-03-08 | 安徽省宁国诚信耐磨材料有限公司 | A kind of cast grinding ball low cost molten iron casting car |
| CN107349835A (en) * | 2017-09-12 | 2017-11-17 | 朱文连 | A kind of building construction application lime white homogenizer |
| CN107449639A (en) * | 2017-06-20 | 2017-12-08 | 中国水利水电科学研究院 | A kind of water and soil conservation value cell runoff and sediment continuous sampling measuring system and method |
| CN207628355U (en) * | 2017-11-17 | 2018-07-20 | 天津基纳科技发展有限公司 | A kind of driving device of blender discharge outlet |
| CN209181824U (en) * | 2018-11-26 | 2019-07-30 | 黑龙江省水利科学研究院 | Slope runoff overall process automated watch-keeping facility |
-
2018
- 2018-11-26 CN CN201811415551.9A patent/CN109443436A/en not_active Withdrawn
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101067566A (en) * | 2006-12-14 | 2007-11-07 | 中国科学院东北地理与农业生态研究所 | Movable earth surface runoff observer |
| CN101000335A (en) * | 2006-12-15 | 2007-07-18 | 中国农业科学院农业资源与农业区划研究所 | Automatic surveying and sampling device for runoff water flow of farmland or hillside fields |
| CN101017104A (en) * | 2007-02-26 | 2007-08-15 | 中国科学院、水利部成都山地灾害与环境研究所 | Measurement system for interflow of thin-layer sloping land |
| CN202181101U (en) * | 2011-08-11 | 2012-04-04 | 无锡市德瑞包装设备制造有限公司 | Reverse turning and dumping device |
| CN103323068A (en) * | 2013-06-19 | 2013-09-25 | 农业部环境保护科研监测所 | Automatic surface runoff metering device |
| CN103389146A (en) * | 2013-06-25 | 2013-11-13 | 刘健 | Self-washing water and soil loss sampling and monitoring device for slope runoffs |
| CN203981228U (en) * | 2014-07-21 | 2014-12-03 | 福建农林大学 | A kind of positive displacement slope runoff counting flowmeter |
| CN104165817A (en) * | 2014-08-27 | 2014-11-26 | 长春工程学院 | Real-time runoff sediment content measuring device and measuring method |
| CN105371904A (en) * | 2015-10-16 | 2016-03-02 | 西北农林科技大学 | Device for real-time automatic measurement of runoff mud and sand and measurement method |
| CN105798029A (en) * | 2016-05-18 | 2016-07-27 | 无锡市金沙田科技有限公司 | Internal and external comprehensive washing device for garbage can |
| CN205996187U (en) * | 2016-08-30 | 2017-03-08 | 安徽省宁国诚信耐磨材料有限公司 | A kind of cast grinding ball low cost molten iron casting car |
| CN107449639A (en) * | 2017-06-20 | 2017-12-08 | 中国水利水电科学研究院 | A kind of water and soil conservation value cell runoff and sediment continuous sampling measuring system and method |
| CN107349835A (en) * | 2017-09-12 | 2017-11-17 | 朱文连 | A kind of building construction application lime white homogenizer |
| CN207628355U (en) * | 2017-11-17 | 2018-07-20 | 天津基纳科技发展有限公司 | A kind of driving device of blender discharge outlet |
| CN209181824U (en) * | 2018-11-26 | 2019-07-30 | 黑龙江省水利科学研究院 | Slope runoff overall process automated watch-keeping facility |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110031356A (en) * | 2019-05-10 | 2019-07-19 | 长春合利水土保持科技有限公司 | Sediment content measuring device in a kind of portable runoff |
| CN110031356B (en) * | 2019-05-10 | 2023-12-26 | 长春合利水土保持科技有限公司 | Portable device for measuring sediment content in runoff |
| CN110095163A (en) * | 2019-06-20 | 2019-08-06 | 西安新汇泽测控技术有限公司 | Full runoff and sediment automonitor |
| CN110095163B (en) * | 2019-06-20 | 2023-11-24 | 西安新汇泽测控技术有限公司 | Full runoff sediment automatic monitor |
| CN111811977A (en) * | 2020-06-18 | 2020-10-23 | 西安三智科技有限公司 | Runoff sediment content and flow measurement device and measurement method |
| CN114062185A (en) * | 2021-11-16 | 2022-02-18 | 黑龙江省水利科学研究院 | But automatic measuring device of single-bucket turnover type runoff silt of automatically cleaning |
| CN114062185B (en) * | 2021-11-16 | 2022-06-03 | 黑龙江省水利科学研究院 | But single-bucket of automatically cleaning tip formula runoff silt automatic measuring device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109443436A (en) | Slope runoff overall process automated watch-keeping facility | |
| CN105865965B (en) | Weighing Lysimeter a kind of ground suitable for rice terrace | |
| US8091409B2 (en) | Percolation testing apparatus and methods | |
| CN100494957C (en) | Automatic sampling system for storm runoff in small watershed | |
| CN108267344B (en) | A kind of sloping surface runoff field runoff sampler | |
| CN209181824U (en) | Slope runoff overall process automated watch-keeping facility | |
| CN106522288A (en) | Control device for level of underwater concrete cast-in-place pile and use method thereof | |
| CN216718733U (en) | Double-barrel type weighing rain measuring barrel | |
| CN107271223B (en) | Continuous sampling and measuring system and method for runoff and sediment in indoor soil tank test | |
| CN112033872A (en) | Tipping bucket type full-runoff sediment automatic monitoring device | |
| CN205941079U (en) | Invariable useless thick liquid concentration detection device of volume | |
| CN109162280A (en) | A kind of underwater gliders absolute altitude automation control method | |
| CN205449184U (en) | Positive displacement liquid automatic measurement device | |
| CN112033873A (en) | Volume-measuring type full-runoff sediment automatic monitoring device | |
| CN206352316U (en) | A kind of control device of underwater concrete filling pile absolute altitude | |
| CN109372036A (en) | Cast-in-place concrete pile pile head elevation control device and its application method | |
| CN210066840U (en) | Mud index data acquisition device | |
| CN208201875U (en) | Super-long and large-diameter bored piles magazine attachment | |
| CN202194161U (en) | Detecting device for concrete at top of drilled pile | |
| CN210347232U (en) | Electric water sampler and unmanned aerial vehicle-mounted electric water sampler | |
| CN204575378U (en) | Runoff and sediment automonitor water inlet hydrocone type regulating device | |
| CN107764593A (en) | A kind of continuous mixed sample harvester and its water sampling method | |
| CN209277214U (en) | Cast-in-place concrete pile pile head elevation control device | |
| CN212364010U (en) | Volume-measuring type full-runoff sediment automatic monitoring device | |
| CN111576505A (en) | Device and method for testing pile top position of concrete cast-in-place pile |
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 | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190308 |