CN112147278B - Measuring device for oxygen content of multiple horizontal layers - Google Patents

Measuring device for oxygen content of multiple horizontal layers Download PDF

Info

Publication number
CN112147278B
CN112147278B CN202010881465.8A CN202010881465A CN112147278B CN 112147278 B CN112147278 B CN 112147278B CN 202010881465 A CN202010881465 A CN 202010881465A CN 112147278 B CN112147278 B CN 112147278B
Authority
CN
China
Prior art keywords
oxygen content
measuring
rectangular square
oxygen
rod
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.)
Active
Application number
CN202010881465.8A
Other languages
Chinese (zh)
Other versions
CN112147278A (en
Inventor
涂予新
王�华
曾一川
夏玉宝
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hohai University HHU
Original Assignee
Hohai University HHU
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hohai University HHU filed Critical Hohai University HHU
Priority to CN202010881465.8A priority Critical patent/CN112147278B/en
Publication of CN112147278A publication Critical patent/CN112147278A/en
Application granted granted Critical
Publication of CN112147278B publication Critical patent/CN112147278B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/0004Gaseous mixtures, e.g. polluted air
    • G01N33/0009General constructional details of gas analysers, e.g. portable test equipment

Abstract

The invention discloses a measuring device for oxygen content of multiple horizontal layers, which comprises a tripod, a damping hinge, a cross rod, a vertical rod, a first rectangular square tube, a second rectangular square tube, a flat strip-shaped air inlet end, a gas collecting tube, a supporting plate, a level bubble, a transverse plate, a damping turntable and an oxygen measuring assembly, wherein the damping hinge is arranged on the tripod; the oxygen measuring device comprises a cross rod, a vertical rod, a movable rod, a supporting plate, an oxygen measuring assembly, a transverse plate, a damping turntable and a damping turntable, wherein the cross rod and the vertical rod form a quadrilateral frame, scales and leveling bubbles are arranged on the vertical rod, the movable rod is fixedly connected between two first rectangular square tubes, the supporting plate is fixed on two tripods, the oxygen measuring assembly is fixedly arranged at the upper left end of the supporting plate, the transverse plate is fixedly connected below the tripods, the damping turntable is connected onto the transverse plate, and the fixing assembly is fixed on the damping turntable; the device for measuring the oxygen content of the multiple horizontal layers, provided by the invention, can be used for measuring the oxygen content of the multiple horizontal layers, and can also be used for setting the height of the measured horizontal layer according to actual measurement needs, so that the accuracy of measurement data is ensured.

Description

Measuring device for oxygen content of multiple horizontal layers
Technical Field
The invention belongs to the technical field of air measuring equipment, and particularly relates to a multi-level oxygen content accurate measuring device.
Background
The concentration of oxygen in the air varies at different heights, which also affects the growth of vegetation, the inhabitation of animals, etc., and thus a device capable of measuring the concentration of oxygen in multiple levels is required.
Depending on the need to collect data, environmental workers often need to measure the gas in each level of the area, primarily to obtain the oxygen content of each level, existing air measurement instruments are typically fixed to the ground with a tripod or are portable by hand.
When the air measuring device is a floor type, it is inconvenient to measure the oxygen concentration of air at a higher place because the device is large in size at this time.
When the air measuring device is handheld and portable, the oxygen concentration in the air within a height range can be obtained, so that the air measuring device has great measurement limitation and is easy to generate larger measurement result errors.
Disclosure of Invention
The present invention provides a measuring device for oxygen content in multiple horizontal layers, which utilizes a fixing component to fix the measuring device at a high place, utilizes a level bubble to determine the horizontal position of the device, and utilizes a scale mark arranged on the device to accurately read the altitude of a measuring point.
In order to solve the technical problems, the invention adopts the technical scheme that:
a measuring device for oxygen content of multiple horizontal layers comprises a tripod, a damping hinge, a cross rod, a vertical rod, a first rectangular square tube, a second rectangular square tube, a flat strip-shaped air inlet end, a gas collecting tube, a supporting plate, a level bubble, a transverse plate, a damping turntable, an oxygen measuring assembly and a fixing assembly; two tripods are arranged, the two tripods are vertically overlapped and arranged in parallel, a cross bar is hinged above the front ends of the two tripods through a damping hinge, two ends of the cross rod are respectively and fixedly connected with a vertical rod, the cross rod and the vertical rod form a quadrilateral frame, a level bubble is arranged on one of the vertical rods, scales are marked on any one vertical rod, a first rectangular square tube is respectively arranged on each vertical rod in a sliding way, a moving rod is fixedly connected between the two first rectangular square tubes, a second rectangular square tube is arranged on the moving rod in a sliding manner, a threaded hole is arranged on the upper wall of the second rectangular square tube in a penetrating way, a first hand-screwed bolt is arranged in the threaded hole, the bottom end of the second rectangular square tube is hinged with a flat strip-shaped air inlet end, one end of the flat strip-shaped air inlet end is fixedly connected with an air collecting pipe, and the other end of the flat strip-shaped air inlet end is hinged to the upper end of the cross rod; the supporting plate is fixed on the two triangular supports, an oxygen measuring component is fixedly arranged at the left upper end of the supporting plate and is communicated with the gas collecting pipe through a hose, the transverse plate is fixedly connected below the triangular supports, and a damping rotary table is connected to the transverse plate; the fixing component is fixed on the damping turntable and used for fixing the position of the oxygen measuring instrument at a high position, and the fixing component comprises a vertical plate, an arc-shaped pressing plate, a concave block, a second hand-screwed bolt and an arc-shaped pressing plate; the damping turntable is characterized in that the vertical plate is fixedly connected to the damping turntable, the upper end and the lower end of the rear portion of the vertical plate are fixedly connected with the concave block, two opposite arc-shaped pressing plates are movably arranged in the concave block, threaded holes are formed in the left side and the right side of the concave block in a penetrating mode, second hand screwing bolts are arranged in the threaded holes in a matching mode, and one ends of the second hand screwing bolts are rotatably connected to the arc-shaped pressing plates.
Further, the oxygen measuring assembly comprises a supporting plate, a gas chamber, an oxygen content measuring probe and an oxygen content display; the fixed air chamber that is equipped with in upper left end of layer board, the round hole has been seted up to the upper end of air chamber, and its round hole internal fixation is equipped with oxygen content measurement probe, oxygen content measurement probe's lower extreme is located the inside of air chamber, the upper end of air chamber is located oxygen content measurement probe's right-hand, oxygen content measurement probe's upper end is connected with the oxygen content display, the left end of air chamber is provided with the gas outlet.
Further, a rectangular groove is formed in each of the first rectangular square tube and the second rectangular square tube in a penetrating mode, a shaft rod is fixedly arranged in each rectangular groove, and the shaft rod is rotatably sleeved with a roller.
Furthermore, a plurality of protruding particles are fixedly attached to the inner side surface of the arc-shaped pressing plate.
The invention has the following beneficial effects:
1. the device for measuring the oxygen content of the multiple horizontal layers, provided by the invention, can be used for measuring the oxygen content of the multiple horizontal layers, and can also be used for setting the height of the measured horizontal layer according to actual measurement needs, so that the accuracy of measurement data is ensured.
2. The invention provides a measuring device for oxygen content of multiple horizontal layers, which is characterized in that the whole device is fixed on a fixed pile or a trunk through a fixing component, the position of a vertical rod is adjusted through a damping hinge and a damping rotary disc until bubbles in a level bubble are positioned at the central position, the altitude of the bottom end of a flat strip-shaped air inlet end is measured through an altitude measuring device, if the average oxygen content of the horizontal layer in a certain range needs to be measured, the height of a moving rod can be adjusted up and down, the inclination angle of the flat strip-shaped air inlet end is changed accordingly, the vertical height from the bottom end to the top end of the flat strip-shaped air inlet end is the height of the horizontal layer, the height of the horizontal layer is obtained by observing the scale position on the vertical rod at the bottom end of a first rectangular square pipe, a first hand-screwing bolt is used for fixing a second rectangular square pipe after the height is determined, and the inclination angle of the flat strip-shaped air inlet end is fixed, start small-size air pump, the air that the flat bar shape inlet end inhaled this within range passes through the discharge, the hose gets into oxygen measures in the subassembly and measures, so alright obtain the average content of oxygen in this within range, if need measure the oxygen content on a plurality of horizontal layers, can set up a plurality of this devices on the horizontal layer of difference.
Drawings
FIG. 1 is a schematic structural diagram of a measuring device for oxygen content of multiple horizontal layers according to the present invention.
Fig. 2 is a schematic view of the structure of the measuring device for oxygen content of multiple horizontal layers in fig. 1 from other angles.
Fig. 3 is an enlarged schematic view of a point a in fig. 1.
Fig. 4 is an enlarged schematic view of B in fig. 1.
In the figure: tripod 1, damping hinge 2, horizontal pole 3, montant 4, first rectangle side pipe 5, carriage release lever 6, second rectangle side pipe 7, first hand screw bolt 8, flat bar shape inlet end 9, discharge 10, layer board 11, air chamber 12, oxygen content measurement probe 13, oxygen content display 14, gas outlet 15, small-size air pump 16, hose 17, diaphragm 18, damping carousel 19, riser 20, concave piece 21, arc clamp plate 22, second hand screw bolt 23, axostylus axostyle 24, gyro wheel 25, air level bubble 26.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific preferred embodiments.
In the description of the present invention, it is to be understood that the terms "left side", "right side", "upper part", "lower part", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and that "first", "second", etc., do not represent an important degree of the component parts, and thus are not to be construed as limiting the present invention. The specific dimensions used in the present example are only for illustrating the technical solution and do not limit the scope of protection of the present invention.
As shown in figures 1 to 4, a measuring device for oxygen content of multiple horizontal layers comprises triangular supports 1, wherein the triangular supports 1 are provided with two triangular supports 1, the upper parts of the front ends of the two triangular supports 1 are hinged with a cross rod 3 through a damping hinge 2, two ends of the cross rod 3 are respectively fixedly connected with a vertical rod 4, the two vertical rods 4 are parallel to each other, the front end surface of one vertical rod 4 is provided with scales, a first rectangular square pipe 5 is arranged on the vertical rod 4 in a sliding manner, a moving rod 6 is fixedly connected between the two first rectangular square pipes 5, a second rectangular square pipe 7 is arranged on the moving rod 6 in a sliding manner, the upper wall of the second rectangular square pipe 7 is provided with a threaded hole in a penetrating manner, a first screwing bolt 8 is arranged in the threaded hole, the bottom end of the second rectangular square pipe 7 is hinged with a flat strip-shaped air inlet end 9, the rear end of the flat strip-shaped air inlet end 9 is fixedly connected with an air collecting pipe 10, and the other end of the flat strip-shaped air inlet end 9 is hinged with the upper right end of the cross rod 3, the common fixedly connected with layer board 11 in rear that the upper end of two tripods 1 is located damping hinge 2, the fixed oxygen measuring component that is provided with in layer board 11 upper left end, the fixed small-size air pump 16 that is provided with in layer board 11 upper right end, small-size air pump 16 passes through hose 17 and connects in the rear end of discharge tube 10, the other end of small-size air pump 16 passes through the connecting pipe and connects in the right side of oxygen measuring component, the lower extreme of layer board 11 can be dismantled and is provided with the battery, the battery passes through the wire and connects respectively in oxygen measuring component and small-size air pump 16, fixedly connected with diaphragm 18 between the lower extreme of two tripods 1, the rear end fixedly connected with damping carousel 19 of diaphragm 18, the rear end fixedly connected with fixed subassembly of damping carousel 19, the fixed air level 26 that is provided with in the upper end of one of montant 4, when the bubble in air level 26 is located the center, montant 4 is perpendicular to the horizontal plane.
The device is fixed on a fixed pile or a trunk near a measuring point through a fixing component, the position of a vertical rod 4 is adjusted through a damping hinge 2 and a damping rotary disc 19 until bubbles in a level bubble 26 are located at a central position, the altitude of the bottom end of a flat strip-shaped air inlet end 9 is measured through an altitude measuring device, if the average oxygen content of a horizontal layer in a certain range needs to be measured, the height of a moving rod 6 can be adjusted up and down, the inclination angle of the flat strip-shaped air inlet end 9 is changed accordingly, the vertical height from the bottom end to the top end of the flat strip-shaped air inlet end 9 is the height of the horizontal layer, the height of the horizontal layer is obtained by observing the scale position on the vertical rod 4 where the bottom end of a first rectangular square pipe 5 is located, a second rectangular square pipe 7 is fixed through screwing a first hand bolt 8 after the height is determined, the inclination angle of the flat strip-shaped air inlet end 9 is fixed, a small air pump 16 is started, air sucked into the range by the flat strip-shaped air inlet end 9 enters the oxygen measuring assembly through the air collecting pipe 10 and the hose 17 to be measured, so that the average oxygen content in the range can be obtained, and if the oxygen content of a plurality of horizontal layers needs to be measured, a plurality of the oxygen measuring devices can be arranged on different horizontal layers.
The fixing component specifically comprises: a vertical plate 20 is fixedly connected to the rear end of the damping rotary disc 19, a concave block 21 is fixedly connected to the rear of the upper end and the lower end of the vertical plate 20, two opposite arc-shaped pressing plates 22 are movably arranged in the concave block 21, threaded holes are formed in the left side and the right side of the concave block 21 in a penetrating mode, second hand-screwed bolts 23 are arranged in the threaded holes in a matching mode, and one ends of the second hand-screwed bolts 23 are rotatably connected to the arc-shaped pressing plates 22; when the device is fixed, the four arc-shaped pressing plates 22 are respectively placed on two sides of a fixed pile or a trunk, the second hand-screwed bolts 23 on the left side and the right side are screwed, and the second hand-screwed bolts 23 push the arc-shaped pressing plates 22 to push inwards until the arc-shaped pressing plates 22 press the fixed pile or the trunk.
The oxygen measuring component comprises a supporting plate 11, an air chamber 12, an oxygen content measuring probe 13 and an oxygen content display 14, wherein the air chamber 12 is fixedly arranged at the left upper end of the supporting plate 11, a round hole is formed in the upper end of the air chamber 12, the oxygen content measuring probe 13 is fixedly arranged in the round hole, the lower end of the oxygen content measuring probe 13 is positioned in the air chamber 12, the oxygen content display 14 is fixedly arranged at the upper end of the air chamber 12 on the right side of the oxygen content measuring probe 13, the upper end of the oxygen content measuring probe 13 is connected to the oxygen content display 14, and the left end of the air chamber 12 is provided with an air outlet 15; after the air enters the air chamber 12, the oxygen content measuring probe 13 detects the oxygen content therein, transmits the measurement result to the oxygen content display 14 for observation, and the air outlet 15 is used for discharging the air so as to enable the air pressure in the air chamber 12 to be in an equilibrium state.
Eight rectangular grooves are respectively formed in the first rectangular square tube 5 and the second rectangular square tube 7 in a penetrating mode, a shaft lever 24 is fixedly arranged in each rectangular groove, a roller 25 is rotatably sleeved on each shaft lever 24, and each roller 25 is attached to the corresponding vertical rod 4 or the corresponding movable rod 6; when the first rectangular square tube 5 and the second rectangular square tube 7 move on the vertical rod 4 and the moving rod 6 respectively, the roller 25 rolls, so that the sliding friction is converted into rolling friction, and the friction force is greatly reduced.
The inner side surface of the arc-shaped pressing plate 22 is fixedly attached with a plurality of protruding particles; the raised particles can increase the friction between the arc-shaped pressing plate 22 and the fixing pile or the trunk, so that the whole device is firmer.
The damping hinge 2 and the damping turntable 19 are both provided with adjusting devices for adjusting the resistance of the damping hinge; the resistance of the damping hinge 2 and the damping rotary disc 19 is reduced through the adjusting device so as to adjust the position of the vertical rod 4, and the resistance is increased through the adjusting device after the position of the vertical rod 4 is adjusted so as to fix the vertical rod 4.
Although the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the details of the embodiments, and various equivalent modifications can be made within the technical spirit of the present invention, and the scope of the present invention is also within the scope of the present invention.

Claims (4)

1. A measuring device for multi-level slice oxygen content, characterized by: the device comprises a tripod, a damping hinge, a cross bar, a vertical bar, a first rectangular square tube, a second rectangular square tube, a flat strip-shaped air inlet end, an air collecting tube, a supporting plate, a level bubble, a transverse plate, a damping turntable, an oxygen measuring component and a fixing component;
two tripods are arranged, the two tripods are vertically overlapped and arranged in parallel, a cross bar is hinged above the front ends of the two tripods through a damping hinge, two ends of the cross rod are respectively and fixedly connected with a vertical rod, the cross rod and the vertical rod form a quadrilateral frame, a level bubble is arranged on one of the vertical rods, scales are marked on any one vertical rod, a first rectangular square tube is respectively arranged on each vertical rod in a sliding way, a moving rod is fixedly connected between the two first rectangular square tubes, a second rectangular square tube is arranged on the moving rod in a sliding manner, a threaded hole is arranged on the upper wall of the second rectangular square tube in a penetrating way, a first hand-screwed bolt is arranged in the threaded hole, the bottom end of the second rectangular square tube is hinged with a flat strip-shaped air inlet end, one end of the flat strip-shaped air inlet end is fixedly connected with an air collecting pipe, and the other end of the flat strip-shaped air inlet end is hinged to the upper end of the cross rod; the supporting plate is fixed on the two tripods, an oxygen measuring component is fixedly arranged at the left upper end of the supporting plate and is communicated with the gas collecting pipe through a hose, the transverse plate is fixedly connected below the tripods, a damping turntable is connected on the transverse plate,
the fixing assembly is fixed on the damping turntable and used for fixing the position of the oxygen measuring instrument at a high position; the fixing component comprises a vertical plate, an arc-shaped pressing plate, a concave block and a second hand-screwed bolt; the vertical plate is fixedly connected on the damping turntable, the upper end and the lower end at the rear part of the vertical plate are both fixedly connected with a concave block, two opposite arc-shaped pressing plates are movably arranged in the concave block,
threaded holes are formed in the left side and the right side of the concave block in a penetrating mode, second hand-operated screwing bolts are arranged in the threaded holes, and one ends of the second hand-operated screwing bolts are rotatably connected to the arc-shaped pressing plate; and a second hand-operated screwing bolt on the left side and the right side of the concave block is screwed, and the second hand-operated screwing bolt pushes the arc-shaped pressing plate to be pushed inwards until the arc-shaped pressing plate presses and fixes the measuring device at a high position.
2. The measurement device for multi-level slice oxygen content of claim 1, wherein: the oxygen measuring component comprises a supporting plate, a gas chamber, an oxygen content measuring probe and an oxygen content display; the fixed air chamber that is equipped with in upper left end of layer board, the round hole has been seted up to the upper end of air chamber, and its round hole internal fixation is equipped with oxygen content measurement probe, oxygen content measurement probe's lower extreme is located the inside of air chamber, the upper end of air chamber is located oxygen content measurement probe's right-hand, oxygen content measurement probe's upper end is connected with the oxygen content display, the left end of air chamber is provided with the gas outlet.
3. The device for measuring the oxygen content of multiple horizontal layers according to claim 1, wherein rectangular grooves are formed in the first rectangular square pipe and the second rectangular square pipe in a penetrating mode, a shaft rod is fixedly arranged in each rectangular groove, and a roller is rotatably sleeved on each shaft rod.
4. The device for measuring the oxygen content of multiple horizontal layers according to claim 1, wherein a plurality of protruding particles are fixedly attached to the inner side surface of the arc-shaped pressing plate.
CN202010881465.8A 2020-08-27 2020-08-27 Measuring device for oxygen content of multiple horizontal layers Active CN112147278B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010881465.8A CN112147278B (en) 2020-08-27 2020-08-27 Measuring device for oxygen content of multiple horizontal layers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010881465.8A CN112147278B (en) 2020-08-27 2020-08-27 Measuring device for oxygen content of multiple horizontal layers

Publications (2)

Publication Number Publication Date
CN112147278A CN112147278A (en) 2020-12-29
CN112147278B true CN112147278B (en) 2021-07-20

Family

ID=73889194

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010881465.8A Active CN112147278B (en) 2020-08-27 2020-08-27 Measuring device for oxygen content of multiple horizontal layers

Country Status (1)

Country Link
CN (1) CN112147278B (en)

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030025988A (en) * 2001-09-24 2003-03-31 민정 Hanging system for television
US9453608B2 (en) * 2013-05-07 2016-09-27 Gary HOYLE Self-leveling utility platform
CN203816677U (en) * 2014-03-20 2014-09-10 河海大学 Movable hoisting experiment table with variable tabletop
CN105233609B (en) * 2015-10-30 2017-07-11 南京白云化工环境监测有限公司 Portable public place air detection equipment
CN206016226U (en) * 2016-07-22 2017-03-15 北京博大经开建设有限公司 Tool type scaffold interlayer guard system
CN106352430A (en) * 2016-10-12 2017-01-25 广州市欧树环保科技有限公司 Mobile air detection equipment
CN107420697B (en) * 2017-07-26 2019-01-08 吉林省惠津分析测试有限公司 A kind of air detection equipment apparatus for placing easy to remove
CN207455084U (en) * 2017-09-20 2018-06-05 贵州民族大学 A kind of portable air detection device
CN107587467A (en) * 2017-10-29 2018-01-16 荆门市华研智能机电有限公司 A kind of suction nozzle of sweeping car on adaptive road surface
CN208206516U (en) * 2018-06-04 2018-12-07 南昌华标检测技术有限公司 A kind of open air air quality solid pollution analyte detection sampler
CN109030477A (en) * 2018-07-23 2018-12-18 李朋飞 Air detection equipment under a kind of mine
CN209148041U (en) * 2018-12-15 2019-07-23 江苏国森检测技术有限公司 A kind of chemical industry station-service portable air detection device
CN109406614A (en) * 2018-12-18 2019-03-01 上海誉琰科技有限公司 Hand-held oxygen detection instrument and its working method
CN209413348U (en) * 2019-01-11 2019-09-20 广州达蒙安防科技有限公司 Triangle frame member for top frame support
CN211145843U (en) * 2019-11-05 2020-07-31 安徽中证检测技术有限公司 Support for atmosphere detector

Also Published As

Publication number Publication date
CN112147278A (en) 2020-12-29

Similar Documents

Publication Publication Date Title
CN210570637U (en) Road inclination angle measuring instrument
CN201155971Y (en) Horizontal obliquity measuring apparatus
CN112147278B (en) Measuring device for oxygen content of multiple horizontal layers
CN204649257U (en) Read apparatus surveyed by graduated cylinder for soil test
CN214066050U (en) Building levelness detection device
CN208059808U (en) A kind of bridge machine arch measurer
CN217585638U (en) Engineering scale rock mass structural plane roughness coefficient measuring device
CN216847204U (en) Experimental positioner of dynamic elasticity modulus
CN214702272U (en) Portable survey and drawing metering device
CN212721218U (en) Be used for building eminence roof beam component size measurement device
CN214066792U (en) Lawn standard vertical deformation measuring device
CN210198365U (en) Novel composite level
CN112033357B (en) Leveling-free polygon prism measuring device and method for triangulation elevation measurement
CN212298405U (en) Surveying instrument adjusting device for engineering
CN113503866A (en) Geographic information engineering mapping device
CN206919962U (en) Possesses the graduated cylinder of levelness detecting function
CN112697236A (en) Novel mark oil device of unmanned aerial vehicle
CN218238812U (en) Measuring device for building engineering
CN210321712U (en) Slope toe angle and trend measuring device
CN217210715U (en) House building detection and identification field test device
CN219391719U (en) Sand natural repose angle field rapid tester
CN216593037U (en) Building slope is surveyed and drawing chi for measurement
CN210570642U (en) Gradiometer capable of being automatically adjusted
CN213779087U (en) Portable support for measuring instrument
CN215339418U (en) Multi-index water infiltration system with adjustable water head

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
GR01 Patent grant