CN116087078A - Soil wind erosion indoor test simulation device - Google Patents
Soil wind erosion indoor test simulation device Download PDFInfo
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- CN116087078A CN116087078A CN202310013212.2A CN202310013212A CN116087078A CN 116087078 A CN116087078 A CN 116087078A CN 202310013212 A CN202310013212 A CN 202310013212A CN 116087078 A CN116087078 A CN 116087078A
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- 238000012360 testing method Methods 0.000 title claims abstract description 103
- 230000003628 erosive effect Effects 0.000 title claims abstract description 46
- 239000002689 soil Substances 0.000 title claims abstract description 32
- 238000004088 simulation Methods 0.000 title claims abstract description 21
- 238000007664 blowing Methods 0.000 claims abstract description 19
- 230000009471 action Effects 0.000 claims abstract description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 8
- 239000010935 stainless steel Substances 0.000 claims description 8
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 5
- 238000004162 soil erosion Methods 0.000 claims 8
- 239000000428 dust Substances 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 5
- 239000004576 sand Substances 0.000 description 11
- 239000003795 chemical substances by application Substances 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000013475 authorization Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000035558 fertility Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000013102 re-test Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 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
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/24—Suction devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/24—Suction devices
- G01N2001/245—Fans
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- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Immunology (AREA)
- General Health & Medical Sciences (AREA)
- Pathology (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Ecology (AREA)
- Environmental & Geological Engineering (AREA)
- Biodiversity & Conservation Biology (AREA)
- Environmental Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The utility model provides a soil wind erosion indoor test simulation device, and belongs to the technical field of test simulation devices. The utility model comprises the following steps: a test chamber; the air blowing device is arranged in the test box and used for simulating wind power action and can adjust wind speed; the sample platform is positioned in the test box and arranged in front of the air blowing device and used for containing a sample, and the angle of the sample platform can be adjusted; and the collecting device is arranged in the test box and positioned below the sample platform and is used for collecting wind erosion objects. According to the utility model, the wind speed is freely adjusted by adjusting the power of the air blowing device, the wind speed required by a test is selected, the test can be started by adjusting different gradients through adjusting the sample platform, the wind erosion blown away by the air blowing device is collected through the collecting device, the pollution of flying dust is greatly reduced, a safe and low-pollution test environment is provided for test staff, the total volume is small, the space of a laboratory is greatly saved, the operation is simple, and the starting cost of a wind tunnel test is greatly saved in the test process.
Description
Technical Field
The utility model relates to a test simulation device, in particular to a soil wind erosion indoor test simulation device.
Background
Soil wind erosion is used as a primary link and an important component of soil desertification, and is a process of separating surface soil substances from original space positions by wind force, and comprises particle starting, transportation and deposition, wherein larger particles mainly creep and smaller particles mainly jump and suspend. Soil wind erosion can cause loss of fine particles rich in nutrients and organic matters, soil fertility is reduced, agricultural productivity is reduced, even sand storm disasters are caused, and human health and ecological safety in arid areas are seriously threatened.
The soil solidifying agent is a novel energy-saving environment-friendly engineering material synthesized by various inorganic and organic materials and used for solidifying various kinds of soil, can change the physical structure of the soil, improve the wind erosion resistance and other performances of the soil, does not influence vegetation growth and optimizes the ecological environment, thereby becoming a hot spot for research of students at home and abroad. In order to study the wind erosion resistance of the soil-fixing agent improved soil, wind erosion test is required to be carried out on the sample.
However, the existing wind erosion test is generally simulated in a wind tunnel laboratory, and has the problems of high laboratory construction, operation and maintenance costs, complex operation, high space occupation rate and the like, the wind erosion test has larger pollution to the wind tunnel laboratory, and the wind erosion test has the problems of difficult cleaning, high maintenance cost and the like for part of tests requiring control of low-dust-raising sand. While most units do not have the ability to make and operate wind tunnel laboratories.
The utility model with the authorization bulletin of CN216247639U discloses a simple wind erosion device, which consists of a blower, a timer, a sand collector, an anemometer, a sample platform, an air duct partition board and a sand collecting box body, wherein the blower is connected with an air inlet, the air duct partition board is arranged in an air passage, the sand collector is connected with the air passage, the sand inlet quantity is regulated through a sand seepage round hole and an acrylic batten, the quantity of sand pumping in the wind erosion process is regulated, the sample platform is provided with a sample platform opening and closing cover, and the anemometer is placed under the sample platform to observe the wind speed used in a test in real time.
The above-mentioned patent has two disadvantages:
1. the utility model is not applicable to wind erosion tests with different gradients.
2. The utility model can achieve the purpose of adjusting the wind speed by adjusting the power of the blower and the area of the air duct, and has complicated operation.
Therefore, aiming at the problems, the utility model aims to create a wind erosion device which can meet the requirements of basic wind erosion tests, has low cost, convenient operation, small space occupation, is suitable for different gradients and is environment-friendly.
Disclosure of Invention
In view of the above, in order to construct a wind erosion device which can meet the requirements of basic wind erosion tests, has the advantages of low cost, convenient operation, small space occupation, suitability for different gradients and environmental protection, the utility model provides a soil wind erosion indoor test simulation device, the wind speed is freely adjusted by adjusting the power of a blowing device, the wind speed required by the test is selected, the test can be started by adjusting different gradients by adjusting a sample platform, the wind erosion objects blown away by the blowing device are collected by a collecting device, the pollution of flying dust is greatly reduced, a safe and low-pollution test environment is provided for test staff, the total volume is small, the space of a laboratory is greatly saved, the operation is simple, and the starting cost of a wind tunnel test is greatly saved in the test process.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
a soil wind erosion indoor test simulation device, comprising:
a test chamber;
the air blowing device is arranged in the test box and used for simulating wind power action and can adjust wind speed;
the sample platform is positioned in the test box and arranged in front of the air blowing device and used for containing a sample, and the angle of the sample platform can be adjusted;
and the collecting device is arranged in the test box and positioned below the sample platform and is used for collecting wind erosion objects.
Preferably, the sample platform comprises:
the bottom plate is arranged on the stainless steel bracket in the test box;
one end of the angle adjusting plate is connected with one end of the bottom plate, and the other end of the angle adjusting plate is connected with one end of the tray frame;
the two ends of the folding rod are respectively connected with the other end of the bottom plate and the other end of the tray frame;
the folding rod is provided with a bolt screwing handle for adjusting the tray frame.
Preferably, an anemometer is arranged inside the test chamber between the blowing device and the sample platform.
Preferably, a timer is provided outside the test chamber.
Preferably, the blower device is a blower.
Preferably, the collecting device comprises:
the funnel-shaped air outlet is arranged below the sample platform;
and the collecting bag is positioned in the test box and arranged below the funnel-shaped air outlet.
Preferably, the funnel-shaped air outlet is also communicated with a circular air outlet.
Preferably, the test box is formed by enclosing a stainless steel bracket and an acrylic plate.
Preferably, the front and rear sides of the test chamber are configured as double doors.
Preferably, a battery for supplying power to the blower is arranged in the blower.
Compared with the prior art, the utility model has the following beneficial effects:
the soil wind erosion indoor test simulation device provided by the utility model can realize the basic requirements of wind erosion tests. Practice proves that the device has good wind erosion test effect. The device can freely adjust the wind speed by adjusting the power of the blower. The device has small overall volume and greatly saves the space of a laboratory. The starting cost of the wind tunnel test is greatly saved in the test process. The operation is extremely simple, and the test can be started by only adjusting the wind speed of the blower through remote control and selecting the wind speed required by the test and adjusting different gradients. The device retrieves the wind erosion thing through the sand collection bag of box lower part air outlet, has reduced the pollution of raise dust greatly, provides a safe low pollution's test environment for the test personnel.
Drawings
FIG. 1 is a perspective view of the overall structure of the present utility model;
FIG. 2 is a schematic diagram of a sample platform;
FIG. 3 is a front view of the present utility model;
in the figure, 1, a test box, 2, a blower, 3, a timer, 4, an anemometer, 5, a sample platform, 6, a collection bag, 7, an acrylic plate, 8, a stainless steel bracket, 9, a lithium battery, 10, a bottom plate, 11, an angle adjusting plate, 12, a bolt, 13, a tray frame, 14, a folding rod, 15, a bolt screwing handle, 16, a tray, 17, a round air outlet and 18, a funnel-shaped air outlet.
Detailed Description
The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. Based on the embodiments herein, all other embodiments that a person of ordinary skill in the art would obtain without undue effort; all falling within the scope of the present utility model.
In the description of the present utility model, it should be noted that the positional or positional relationship indicated by the terms such as "upper", "lower", "inner", "outer", "top/bottom", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "configured to," "engaged with," "connected to," and the like are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1 to 3, the present utility model provides a soil wind erosion indoor test simulation device, comprising:
a test box 1;
a blowing device, which is arranged in the test chamber 1 and is used for simulating wind force action and can adjust wind speed;
a sample platform 5, which is located in the test chamber 1 and is arranged in front of the blower device, and is used for containing a sample, and the angle of the sample platform can be adjusted;
and the collecting device is arranged in the test box 1 and is positioned below the sample platform 5 and is used for collecting wind erosion objects.
In the utility model, the air blowing device can be used for freely adjusting the wind speed by adjusting the power of the air blowing device through the remote controller so as to meet the wind speed required by the test.
According to the utility model, the wind erosion conditions of the soil with different gradients are simulated through the adjustment of the angle of the sample platform 5, so that the wind erosion resistance of the soil improved by the soil fixing agent can be conveniently researched.
In the utility model, the collecting device recovers wind erosion matters, so that the pollution of dust emission is greatly reduced, and a safe and low-pollution test environment is provided for test staff.
In the utility model, a tray 16 is arranged on the sample platform 5, and soil samples are contained in the tray 16.
In the present utility model, the sample stage 5 includes:
a bottom plate 10 provided on the stainless steel holder 8 in the test chamber 1;
an angle adjusting plate 11 having one end connected to one end of the bottom plate 10 and the other end connected to one end of the tray frame 13;
a folding bar 14, two ends of which are respectively connected with the other end of the bottom plate 10 and the other end of the tray frame 13;
the folding rod 14 is provided with a bolt screwing handle 15 for adjusting the tray frame 13.
In the utility model, further, the bottom plate 10 is welded with the stainless steel bracket 8, each angle adjusting plate 11 is connected with the tray frame 13 through two bolts 12, a bolt screwing handle 15 is arranged in the middle of the folding rod 14, the angle of the tray frame 13 can be adjusted by rotating the bolt screwing handle 15, different gradients are simulated, the tray 16 for containing samples is placed on the tray frame 13, and the tray 16 can be taken out for cleaning after the test is finished.
In the present utility model, an anemometer 4 is provided inside the test chamber 1 between the blowing device and the specimen platform 5, and the anemometer 4 is provided between the specimen platform 5 and the blowing device to observe the wind speed used for the test in real time.
In the present utility model, a timer 3 is provided outside the test chamber 1.
In the utility model, the blower device is a blower 2, the blower 2 is preferably arranged on the wall of the box body at one end of the test box 1, and the blower 2 can adjust the wind speed required by the test through a remote controller.
In the present utility model, the collecting device includes:
the funnel-shaped air outlet 18 is arranged below the sample platform 5 and is positioned at the bottom of the inside of the test box 1, wind erosion is blown out from the funnel-shaped air outlet 18, and the wind erosion is recovered by the collecting bag, so that the purposes of reducing a pollution area and recovering sand can be achieved;
and a collecting bag 6, which is positioned in the test chamber 1 and is arranged below the funnel-shaped air outlet 18, and is used for collecting wind erosion.
In the utility model, the funnel-shaped air outlet 18 is also communicated with a circular air outlet 17, and the circular air outlet 17 is positioned above the collecting bag 6.
In the utility model, the test chamber 1 is formed by enclosing a stainless steel bracket 8 and an acrylic plate 7.
In the present utility model, the front and rear sides of the test chamber 1 are provided as double doors.
In the present utility model, a battery 9, preferably a detachable lithium battery 9, for powering the blower is provided in the blower.
In addition, in the utility model, the dust adsorption device can be connected to the air outlet after the test is finished according to actual conditions and used for cleaning the box body and the like. The modification can be carried out according to actual conditions;
the box body of the test box 1 can be cuboid, square or ellipsoid, and the like, and can be selected according to actual needs.
The test method of the utility model is as follows:
step one, preparing curing agent modified soil
Opening the door of the test box 1, taking the tray 16 off the tray frame 13, firstly uniformly spreading soil samples in the tray 50cm by 2cm, uniformly spraying soil fixing agent on the surface of the sandy soil samples, wherein the spraying amount is 3L/m 2 Standing for 24 hours at room temperature;
step two, regulating the gradient
The gradient required by the test is selected, the tray frame 13 is adjusted to a proper angle according to an angle ruler, and then the bolts on the folding rods 14 at the two sides are rotated clockwise to screw the handles 15, so that the angle can be fixed;
step three, adjusting the wind speed
Sleeving a collecting bag 6, opening a blower 2, controlling the wind speed of the blower 2 through a remote control, starting an anemometer 4, placing a soil sample to be tested on a tray frame 13 when the proper wind speed is read on the anemometer 4, and starting a timer 3 for timing, namely starting a test;
step four, cleaning the box body
After the test is finished, the blower 2 is turned off, the tray 16 and the collecting bag 6 are taken down, the box body is cleaned, and the dust adsorption device can be connected to the air outlet to clean the box body for a retest.
In the above test method, the wind erosion test with different wind speeds and the wind erosion test with different gradients can be realized by adjusting the power of the blower 2 and by adjusting different angles by screwing the handle 15 with bolts.
The technical principle of the utility model is as follows:
by using the soil wind erosion indoor test simulation device provided by the utility model to simulate natural environment, the angle between the tray frame 13 and the bottom plate 10 is changed by rotating the bolt screwing handle 15, wind erosion test is performed on the improved soil on the tray 16, and the test of measuring wind erosion of different gradients is realized;
the wind power air flow in the natural environment is simulated by using the air blower 2 with adjustable wind speed, so that the wind power of the curing agent modified soil is changed;
the lower part of the test box 1 adopts a funnel-shaped air outlet 18, wind erosion is blown out from the funnel-shaped air outlet 18, and the purpose of reducing a pollution area and recycling sand can be achieved through the recovery of a collecting bag.
The above description is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto. Any person skilled in the art can make equivalent substitutions or changes according to the technical scheme of the present utility model and the improved conception thereof within the technical scope of the present disclosure; are intended to be encompassed within the scope of the present utility model.
Claims (10)
1. An indoor experimental simulation device of soil wind erosion, characterized by comprising:
a test chamber;
the air blowing device is arranged in the test box and used for simulating wind power action and can adjust wind speed;
the sample platform is positioned in the test box and arranged in front of the air blowing device and used for containing a sample, and the angle of the sample platform can be adjusted;
and the collecting device is arranged in the test box and positioned below the sample platform and is used for collecting wind erosion objects.
2. A soil erosion indoor test simulation device according to claim 1, wherein the sample platform comprises:
the bottom plate is arranged on the stainless steel bracket in the test box;
one end of the angle adjusting plate is connected with one end of the bottom plate, and the other end of the angle adjusting plate is connected with one end of the tray frame;
the two ends of the folding rod are respectively connected with the other end of the bottom plate and the other end of the tray frame;
the folding rod is provided with a bolt screwing handle for adjusting the tray frame.
3. A soil erosion indoor test simulation device according to claim 1, wherein an anemometer is provided inside the test chamber between the blower and the sample platform.
4. A soil erosion indoor test simulation device according to claim 1, wherein a timer is provided outside the test chamber.
5. A soil erosion indoor test simulation device according to claim 1, wherein the blowing device is a blower.
6. A soil erosion indoor test simulation device according to claim 1, wherein the collection device comprises:
the funnel-shaped air outlet is arranged below the sample platform;
and the collecting bag is positioned in the test box and arranged below the funnel-shaped air outlet.
7. The simulation device for the soil erosion indoor test of claim 6, wherein the funnel-shaped air outlet is further communicated with a circular air outlet.
8. The simulation device for the soil wind erosion indoor test of claim 1, wherein the test chamber is formed by enclosing a stainless steel bracket and an acrylic plate.
9. A soil erosion indoor test simulation device according to claim 1, wherein the front and rear sides of the test chamber are provided as double doors.
10. A soil erosion indoor test simulation device according to any of claims 1-9, wherein a battery is provided in the blowing device for powering the blowing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310013212.2A CN116087078A (en) | 2023-01-05 | 2023-01-05 | Soil wind erosion indoor test simulation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310013212.2A CN116087078A (en) | 2023-01-05 | 2023-01-05 | Soil wind erosion indoor test simulation device |
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| Publication Number | Publication Date |
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| CN116087078A true CN116087078A (en) | 2023-05-09 |
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| CN202310013212.2A Pending CN116087078A (en) | 2023-01-05 | 2023-01-05 | Soil wind erosion indoor test simulation device |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101799355A (en) * | 2010-04-07 | 2010-08-11 | 河北农业大学 | Soil wind erosion measuring device |
| CN104165748A (en) * | 2014-07-10 | 2014-11-26 | 河海大学 | Soil wind-erosion testing system and evaluation method thereof |
| CN104502259A (en) * | 2014-12-17 | 2015-04-08 | 榆林学院 | Evaluation instrument of soil mass corrosion resistance under wind erosion, water erosion and coupling erosion |
| CN205972689U (en) * | 2016-08-03 | 2017-02-22 | 天津市美亿恒达科技有限公司 | Heavy grade conveyer |
| CN107255600A (en) * | 2017-05-10 | 2017-10-17 | 青海大学 | Portable field soil drifting in situ detection experimental rig and method |
| CN208361429U (en) * | 2018-04-30 | 2019-01-11 | 重庆韵程果业有限公司 | Auxiliary device is used in a kind of unloading of fruit |
| CN209673324U (en) * | 2019-03-19 | 2019-11-22 | 中国科学院寒区旱区环境与工程研究所 | A kind of different gradient soil drifting amount automatic measuring instrument suitable for wind-tunnel |
| CN111458216A (en) * | 2020-05-10 | 2020-07-28 | 兰州理工大学 | Test bed and test method for simulating impact action at any angle |
| CN113929029A (en) * | 2021-10-21 | 2022-01-14 | 国网辽宁省电力有限公司盘锦供电公司 | High-altitude electric power maintenance vehicle with large-corner weak shaking ladder body |
| CN216247639U (en) * | 2020-12-25 | 2022-04-08 | 兰州大学 | Simple wind erosion device |
-
2023
- 2023-01-05 CN CN202310013212.2A patent/CN116087078A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101799355A (en) * | 2010-04-07 | 2010-08-11 | 河北农业大学 | Soil wind erosion measuring device |
| CN104165748A (en) * | 2014-07-10 | 2014-11-26 | 河海大学 | Soil wind-erosion testing system and evaluation method thereof |
| CN104502259A (en) * | 2014-12-17 | 2015-04-08 | 榆林学院 | Evaluation instrument of soil mass corrosion resistance under wind erosion, water erosion and coupling erosion |
| CN205972689U (en) * | 2016-08-03 | 2017-02-22 | 天津市美亿恒达科技有限公司 | Heavy grade conveyer |
| CN107255600A (en) * | 2017-05-10 | 2017-10-17 | 青海大学 | Portable field soil drifting in situ detection experimental rig and method |
| CN208361429U (en) * | 2018-04-30 | 2019-01-11 | 重庆韵程果业有限公司 | Auxiliary device is used in a kind of unloading of fruit |
| CN209673324U (en) * | 2019-03-19 | 2019-11-22 | 中国科学院寒区旱区环境与工程研究所 | A kind of different gradient soil drifting amount automatic measuring instrument suitable for wind-tunnel |
| CN111458216A (en) * | 2020-05-10 | 2020-07-28 | 兰州理工大学 | Test bed and test method for simulating impact action at any angle |
| CN216247639U (en) * | 2020-12-25 | 2022-04-08 | 兰州大学 | Simple wind erosion device |
| CN113929029A (en) * | 2021-10-21 | 2022-01-14 | 国网辽宁省电力有限公司盘锦供电公司 | High-altitude electric power maintenance vehicle with large-corner weak shaking ladder body |
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