CN114910029A - Vibration displacement sensor leveling method - Google Patents
Vibration displacement sensor leveling method Download PDFInfo
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- CN114910029A CN114910029A CN202210757436.XA CN202210757436A CN114910029A CN 114910029 A CN114910029 A CN 114910029A CN 202210757436 A CN202210757436 A CN 202210757436A CN 114910029 A CN114910029 A CN 114910029A
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- displacement sensor
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000009434 installation Methods 0.000 claims abstract description 30
- 238000001514 detection method Methods 0.000 claims abstract description 21
- 238000010276 construction Methods 0.000 claims abstract description 10
- 238000011900 installation process Methods 0.000 claims abstract description 3
- 230000001817 pituitary effect Effects 0.000 claims description 86
- 230000007246 mechanism Effects 0.000 claims description 26
- 238000007789 sealing Methods 0.000 claims description 16
- 239000000725 suspension Substances 0.000 claims description 8
- 230000005484 gravity Effects 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 230000008602 contraction Effects 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 abstract description 9
- 238000013461 design Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 206010062767 Hypophysitis Diseases 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
- G01C9/18—Measuring inclination, e.g. by clinometers, by levels by using liquids
- G01C9/24—Measuring inclination, e.g. by clinometers, by levels by using liquids in closed containers partially filled with liquid so as to leave a gas bubble
Abstract
The invention discloses a vibration displacement sensor leveling method, wherein a vibration detection module in a vibration displacement sensor is movably connected with a sensor shell, the leveling of the vibration detection module replaces the leveling of the whole vibration displacement sensor, and the leveling work of the whole sensor in the installation process of the sensor is realized by leveling the vibration detection module in the vertical direction or the horizontal direction. The method ensures that the installation of the sensor does not depend on the leveling of the sensor support any more, and avoids the complicated position and posture adjustment work of construction and installation personnel after the installation of the sensor support. The vibration displacement sensor can effectively reduce the installation difficulty of the sensor, improve the construction efficiency and meet the requirement of the installation precision of the vibration displacement sensor. In addition, the method is simple and reliable, the installation and leveling method is convenient and efficient, and the method is suitable for constructing a permanent safety monitoring system of a hydraulic structure.
Description
Technical Field
The invention relates to the field of hydraulic building permanent vibration monitoring system equipment, in particular to a vibration displacement sensor leveling method.
Background
The safety monitoring of the hydraulic structure is an important basis for guiding the safe and stable operation of the hydro-junction and is also an important guarantee that the safety of lives and properties of the downstream masses is not damaged. The monitoring of the structural vibration displacement is an important monitoring content in a permanent safety monitoring system of a hydraulic building, and the monitoring of the vibration displacement is mainly carried out by a vibration displacement sensor. The vibration displacement sensor comprises a vertical direction and a horizontal direction, the effective vibration detection directions of the two sensors need to be guaranteed to be respectively parallel to the vertical direction and the horizontal direction during monitoring, the direction angle error is too large, the monitored data can be distorted or even wrong, and the difficulty of subsequent data processing and analysis is greatly increased.
In the field installation work of the vibration displacement sensor, the error angle between the effective vibration detection direction of the sensor and the vertical or horizontal direction is generally required to be controlled within +/-1.5 degrees, and the installation precision requirement is high. However, since the field construction environment is very complicated, the sensor is often required to be installed on a ground having a certain slope, an inclined wall, an arc vault, an uneven structural wall, etc. according to the monitoring design requirement. The traditional installation method is that a sensor support is fixed on a structure wall surface by expansion bolts, then a leveling ruler is used for measuring whether the support is inclined, if the support is inclined, the expansion bolts at different positions are knocked by a hammer to adjust the installation angle of the support, and the steps are repeated until the support meets the installation requirement, and then the expansion bolts are screwed down by force, so that the fixed installation of the support is completed. For the wall surface with a large inclination angle, a cement platform needs to be constructed manually so as to facilitate the smooth installation of the support. After the support is installed, a sensor needs to be installed on the support. Because the traditional installation method is inconvenient to operate and strong in subjective experience dependence, and the installation angle is not easy to control, the installation angle of the sensor still needs to be measured by a horizontal ruler after the sensor is installed on the support to meet the requirement. At this time, a considerable proportion of the angular deviation of the sensor is overlarge, and the installation angle of the sensor is ensured to be within the design error by adding a gasket, coating 502 glue, even readjusting a support and the like. It can be seen that the traditional vibration displacement installation leveling method has the advantages of complicated operation steps, high difficulty, strong subjective dependence and low construction efficiency.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a vibration displacement sensor leveling method, which solves the problems in the prior art, such as complex operation steps, high difficulty, strong subjective dependence and low construction efficiency of the sensor vibration displacement installation leveling operation.
The invention is realized by the following technical scheme:
a vibration detection module in the vibration displacement sensor is movably connected with a sensor shell, the leveling of the vibration detection module replaces the leveling of the whole vibration displacement sensor, and the leveling work of the whole sensor in the installation process of the sensor is realized by leveling the vibration detection module in the vertical direction or the horizontal direction.
The vibration displacement sensor comprises an external shell, and a conical ball pituitary, a pituitary clamp and a hanging ring rotating mechanism which are positioned in the shell, wherein the conical ball pituitary is positioned at the central position in the shell, the pituitary clamp is arranged on two sides of the conical ball pituitary and is connected with the shell and the hanging ring rotating mechanism, and the hanging ring rotating mechanism is positioned below the conical ball pituitary and is connected with the pituitary clamp and the shell; the shell is of a split structure and is formed by splicing a shell I and a shell II and fixing the shell I and the shell II through screws, the interior of the shell is divided into a circuit module bin and a working bin from top to bottom, and a wire outlet hole, a fixing screw position, a clamp screw hole, a connecting rod screw hole, a leveling tube observation window and a pituitary bearing platform are arranged on the shell; the conical ball pituitary is composed of a conical ball pituitary cavity and a bin body sealing cover, the conical ball pituitary cavity and the bin body sealing cover are fastened through threads, and a vertically arranged level pipe is arranged on the side surface of the bin body sealing cover; the pituitary body clamp consists of a miniature trapezoidal screw rod and a clamp; the hanging ring rotating mechanism consists of a hanging ring, a connecting rod and a connecting rod push rod, and the connecting rod push rod is also of a trapezoidal screw rod structure; the shell is of a split structure and is formed by splicing a shell I and a shell II and fixing the shell I and the shell II through screws, the interior of the shell is divided into a circuit module bin and a working bin from top to bottom, and a wire outlet hole, a fixing screw position, a clamp screw hole, a connecting rod screw hole, a leveling tube observation window and a pituitary bearing platform are arranged on the shell; the conical ball pituitary is composed of a conical ball pituitary cavity and a bin body sealing cover, the conical ball pituitary cavity and the bin body sealing cover are fastened through threads, and a vertically arranged level pipe is arranged on the side surface of the bin body sealing cover; the pituitary body clamp consists of a miniature trapezoidal screw rod and a clamp; the hanging ring rotating mechanism is composed of a hanging ring, a connecting rod and a connecting rod push rod, and the connecting rod push rod is also in a trapezoidal screw rod structure.
The conical pituitary empty bin consists of a spherical empty bin and a solid inverted cone; the conical ball pituitary is supported on a deep groove-shaped pituitary bearing platform in the shell by virtue of the spherical surface of the conical ball pituitary, and realizes rotation within a fixed limit; the solid inverted cone is a main part for enabling the cone-ball pituitary to realize vertical self-leveling by depending on gravity.
The pituitary body clamp consists of a miniature trapezoidal screw rod and a clamp, a nut knob of the trapezoidal screw rod is exposed out of the shell, and the knobs on the two sides of the shell are rotated to realize the extension and retraction of the clamp, so that the conical ball pituitary body and the suspension ring rotating mechanism are fixed together; when the vertical displacement is measured, the leveled pituitary is fixed, so that disturbance of external human factors is prevented; when the horizontal displacement is measured, the inclination of the conical ball pituitary body can be adjusted through the suspension ring rotating mechanism, and the leveling in the horizontal direction is realized.
The hanging ring rotating mechanism consists of a hanging ring, a connecting rod and a connecting rod push rod, and the connecting rod push rod is also of a trapezoidal lead screw structure; the hanging ring rotating mechanism is a link mechanism in essence, and the extension and retraction of the connecting rod push rod are adjusted by rotating the nut knob of the connecting rod push rod exposed out of the shell, so that the whole hanging ring rotating mechanism is driven to rotate, the rotation of the hanging ring rotating mechanism is adjusted after the cone ball pituitary is clamped and fixed by the pituitary clamp, and the leveling of the cone ball pituitary in the horizontal direction is realized.
A vertical level pipe is arranged on the side face of the bin body sealing cover of the conical ball pituitary body, and the level pipe is over against a level pipe observation window on the shell; when the horizontal vibration displacement is measured, the bubble position of the vertical level tube is observed through the level tube observation window, and meanwhile, the knob of the connecting rod push rod is adjusted, so that the accurate leveling of the conical ball pituitary in the horizontal direction is realized; meanwhile, the vertical level pipes with different precisions are replaced according to the installation precision requirements of the vibration displacement sensors with different types and specifications.
Further, each structural part of the vibration displacement sensor structure convenient for leveling should be made of hard metal, such as stainless steel, aluminum alloy, etc., but not limited to one or more materials.
The invention relates to a vibration displacement sensor leveling method, which specifically comprises the following steps:
firstly, when the vibration displacement sensor is used for measuring vertical vibration displacement, construction installation personnel perform leveling work on a sensor support, the sensor is vertically placed, a cone-shaped pituitary and a vibration detection module arranged in a hollow bin of the cone-shaped pituitary can rotate and automatically level under the action of gravity, and a pituitary clamp is adjusted to clamp and fix the pituitary after leveling, so that the cone-shaped pituitary is prevented from shaking due to external human interference;
when the vibration displacement sensor is used for measuring horizontal vibration displacement, the sensor is vertically placed, so that a conical ball pituitary body naturally droops, the pituitary body and a suspension ring rotating mechanism are fixed together by an adjusting clamp, then the sensor is horizontally arranged on a sensor support which is simply leveled with a leveling tube observation window facing upwards, the leveling tube observation window is opened, a knob of a connecting rod push rod is adjusted while a vertical leveling tube is observed, leveling work in the horizontal direction is carried out on the conical ball pituitary body, and when air bubbles in the leveling tube move to the middle of the leveling tube, the leveling work is finished.
Has the advantages that: the invention replaces the leveling of the whole sensor with the leveling of the vibration detection module of the vibration displacement sensor, so that the installation of the sensor does not depend on the leveling of the sensor support any more, and the complicated position and posture adjustment work of construction and installation personnel after the installation of the sensor support is avoided. The vibration displacement sensor adopting the structural design can effectively reduce the installation difficulty of the sensor, improve the construction efficiency and meet the requirement of the installation precision of the vibration displacement sensor.
Drawings
FIG. 1 is a schematic structural diagram of a structural shell I of a vibration displacement sensor;
FIG. 2 is a schematic structural diagram of a structural shell II of the vibration displacement sensor;
FIG. 3 is a schematic view of the outer surface of a vibrating displacement sensor structure;
FIG. 4 is a schematic view of a cone-pituitary gland empty bin and a bin body cover of a vibration displacement sensor structure;
FIG. 5 is a schematic view of a vibratory displacement sensor configuration lobe clamp;
FIG. 6 is a schematic diagram of the internal structure of the vibration displacement sensor;
reference numerals:
1-circuit module bin, 2-working bin, 3-wire outlet hole, 4-pituitary bearing platform, 5-fixing screw position, 6-clamp screw hole, 7-connecting rod screw hole, 8-level tube observation window, 9-cone-sphere pituitary empty bin, 10-bin body sealing cover, 11-level tube, 12-pituitary clamp, 13-suspension ring, 14-connecting rod and 15-connecting rod push rod.
Detailed Description
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 4, the vibration detection module of the vibration displacement sensor is installed in the cone-ball pituity empty bin 9, so that the effective vibration direction of the vibration detection module is the same as the longitudinal axial direction of the cone-ball pituity, the vibration detection module is fixed, the wiring is led out from the wire outlet hole of the bin body sealing cover 10, the cone-ball pituity empty bin 9 and the bin body sealing cover 10 are fixed through threads, and a proper level pipe 11 is selected to be vertically arranged on the side surface of the bin body sealing cover 10 according to the installation accuracy requirements of the vibration displacement sensors with different types and specifications. A cone ball pituitary is arranged on a deep groove pituitary bearing platform 4 in a shell I as shown in figures 1 and 2, an integrating circuit module corresponding to a vibration detection module is arranged in a circuit module bin in the shell I and is connected with the vibration detection module in a wiring mode, then a wiring is led out from the integrating circuit module, penetrates through a wire outlet hole 3 and is connected with and fixed with a sensor joint. As shown in FIG. 6, the hanging ring 13, the connecting rod 14 and the connecting rod push rod 15 are connected and arranged at a predetermined position in the housing I, and as shown in FIG. 6, the pituitary clamp 12 is arranged in the housing through the clamp screw hole 6. The mutual relation among all structures in the shell I is adjusted, and the direction of a level pipe 11 on a bin body sealing cover 10 is adjusted, so that the level pipe can be just opposite to a level pipe observation window 8. After each internal structure is adjusted, the four fixing screw positions 5 are aligned, the shell II is buckled, and the shell I and the shell II are fastened together by using screws after the connecting rod push rod 15 is fixed, as shown in fig. 3.
When the vibration displacement sensor adopting the structural design is used for measuring vertical vibration displacement, construction installation personnel is required to carry out simple leveling work of the sensor support, the sensor is vertically placed, the cone-shaped pituitary body and the vibration detection module arranged in the hollow cabin 9 of the cone-shaped pituitary body can rotate under the action of gravity and automatically level, and the pituitary body is clamped and fixed by adjusting the pituitary body clamp 12 after leveling, so that the cone-shaped pituitary body is prevented from shaking due to external artificial interference.
When the vibration displacement sensor adopting the structural design is used for measuring horizontal vibration displacement, the sensor is vertically placed firstly, so that a conical ball pituitary body naturally droops, the pituitary body and a suspension ring rotating mechanism are fixed together by an adjusting clamp 12, then the sensor is installed on a simple leveling sensor support in a horizontal direction with a leveling tube observation window 8 upwards, the leveling tube observation window 8 is opened, a knob of a connecting rod push rod 15 is adjusted while a vertical leveling tube 11 is observed, leveling work in the horizontal direction is carried out on the conical ball pituitary body, and when air bubbles in the leveling tube 11 move to the middle of the leveling tube, the leveling work is finished.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention or the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention or the invention are intended to be included in the scope of the present invention or the invention.
Claims (7)
1. A vibration displacement sensor leveling method is characterized in that: a vibration detection module in the vibration displacement sensor is movably connected with a sensor shell, leveling of the whole vibration displacement sensor is replaced by leveling of the vibration detection module, and the leveling work of the whole sensor in the installation process of the sensor is realized by leveling the vibration detection module in the vertical direction or the horizontal direction.
2. The vibratory displacement sensor leveling method as recited in claim 1, wherein: the vibration displacement sensor comprises an external shell, and a conical ball pituitary, a pituitary clamp and a hanging ring rotating mechanism which are positioned in the shell, wherein the conical ball pituitary is positioned at the central position in the shell, the pituitary clamps are arranged on two sides of the conical ball pituitary and are connected with the shell and the hanging ring rotating mechanism, and the hanging ring rotating mechanism is positioned below the conical ball pituitary and is connected with the pituitary clamp and the shell; the shell is of a split structure and is formed by splicing a shell I and a shell II and fixing the shell I and the shell II through screws, the interior of the shell is divided into a circuit module bin and a working bin from top to bottom, and a wire outlet hole, a fixing screw position, a clamp screw hole, a connecting rod screw hole, a leveling tube observation window and a pituitary bearing platform are arranged on the shell; the conical ball pituitary is composed of a conical ball pituitary empty bin and a bin body sealing cover, a vibration detection module of a vibration displacement sensor is arranged in the conical ball pituitary empty bin, the conical ball pituitary empty bin and the bin body sealing cover are fastened through threads, and a vertically arranged leveling pipe is arranged on the side surface of the bin body sealing cover; the pituitary body clamp consists of a miniature trapezoidal screw rod and a clamp; the hanging ring rotating mechanism is composed of a hanging ring, a connecting rod and a connecting rod push rod, and the connecting rod push rod is also in a trapezoidal screw rod structure.
3. The vibratory displacement sensor leveling method as recited in claim 2, wherein: the conical pituitary empty bin consists of a spherical empty bin and a solid inverted cone; the conical ball pituitary is supported on a deep groove-shaped pituitary bearing platform in the shell by virtue of the spherical surface of the conical ball pituitary, and realizes rotation within a fixed limit; the solid inverted cone is a main part for enabling the cone-ball pituitary to realize vertical self-leveling by means of gravity.
4. The vibratory displacement sensor leveling method as recited in claim 2, wherein: the pituitary body clamp consists of a miniature trapezoidal screw rod and a clamp, a nut knob of the trapezoidal screw rod is exposed out of the shell, and the knobs on the two sides of the shell are rotated to realize the expansion and contraction of the clamp, so that the conical ball pituitary body and the suspension ring rotating mechanism are fixed together; when the vertical displacement is measured, the leveled pituitary is fixed, so that disturbance of external human factors is prevented; when the horizontal displacement is measured, the inclination of the conical ball pituitary body can be adjusted through the suspension ring rotating mechanism, and the leveling in the horizontal direction is realized.
5. The vibratory displacement sensor leveling method as recited in claim 2, wherein: the hanging ring rotating mechanism consists of a hanging ring, a connecting rod and a connecting rod push rod, and the connecting rod push rod is also of a trapezoidal screw rod structure; the hanging ring rotating mechanism is a link mechanism in essence, and the extension and retraction of the connecting rod push rod are adjusted by rotating the nut knob of the connecting rod push rod exposed out of the shell, so that the whole hanging ring rotating mechanism is driven to rotate, the rotation of the hanging ring rotating mechanism is adjusted after the cone ball pituitary is clamped and fixed by the pituitary clamp, and the leveling of the cone ball pituitary in the horizontal direction is realized.
6. The vibratory displacement sensor leveling method as recited in claim 2, wherein: a vertical level pipe is arranged on the side face of the bin body sealing cover of the conical ball pituitary body, and the level pipe is over against a level pipe observation window on the shell; when the horizontal vibration displacement is measured, the bubble position of the vertical level tube is observed through the level tube observation window, and meanwhile, the knob of the connecting rod push rod is adjusted, so that the accurate leveling of the conical ball pituitary in the horizontal direction is realized; meanwhile, the vertical level pipes with different precisions are replaced according to the installation precision requirements of the vibration displacement sensors with different types and specifications.
7. The vibratory displacement sensor leveling method as recited in claim 6, wherein: the method specifically comprises the following steps:
firstly, when the vibration displacement sensor is used for measuring vertical vibration displacement, construction installation personnel perform leveling work on a sensor support, the sensor is vertically placed, a cone-shaped pituitary and a vibration detection module arranged in a hollow bin of the cone-shaped pituitary can rotate and automatically level under the action of gravity, and a pituitary clamp is adjusted to clamp and fix the pituitary after leveling, so that the cone-shaped pituitary is prevented from shaking due to external human interference;
when the vibration displacement sensor is used for measuring horizontal vibration displacement, the sensor is vertically placed, so that a conical ball pituitary body naturally droops, the pituitary body and a suspension ring rotating mechanism are fixed together by an adjusting clamp, then the sensor is horizontally arranged on a sensor support which is simply leveled with a leveling tube observation window facing upwards, the leveling tube observation window is opened, a knob of a connecting rod push rod is adjusted while a vertical leveling tube is observed, leveling work in the horizontal direction is carried out on the conical ball pituitary body, and when air bubbles in the leveling tube move to the middle of the leveling tube, the leveling work is finished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210757436.XA CN114910029B (en) | 2022-06-30 | 2022-06-30 | Leveling method for vibration displacement sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210757436.XA CN114910029B (en) | 2022-06-30 | 2022-06-30 | Leveling method for vibration displacement sensor |
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| CN114910029A true CN114910029A (en) | 2022-08-16 |
| CN114910029B CN114910029B (en) | 2024-02-09 |
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| CN202210757436.XA Active CN114910029B (en) | 2022-06-30 | 2022-06-30 | Leveling method for vibration displacement sensor |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB511918A (en) * | 1938-01-22 | 1939-08-25 | Bataafsche Petroleum | Gravity meter |
| CN2307288Y (en) * | 1997-01-29 | 1999-02-10 | 覃英涛 | Self-balanced vibrating sensor without power consumption |
| CN206609422U (en) * | 2017-03-10 | 2017-11-03 | 梁智 | A kind of construction automatic detection formula levelness warning device |
| CN107356961A (en) * | 2017-06-27 | 2017-11-17 | 中国地震局工程力学研究所 | Lateral attitude lower sensor horizontal quadrature maintaining body |
| CN206848495U (en) * | 2017-06-27 | 2018-01-05 | 中国地震局工程力学研究所 | Borehole seismic counts weight power self-regulated leveling device |
| CN206848487U (en) * | 2017-06-27 | 2018-01-05 | 中国地震局工程力学研究所 | Each component independence self-level(l)ing is orthogonal to keep earthquake counter device |
| CN206975231U (en) * | 2017-06-27 | 2018-02-06 | 中国地震局工程力学研究所 | The orthogonal levelling gear of sensor levels component |
| CN108981974A (en) * | 2018-07-10 | 2018-12-11 | 南京航空航天大学 | A kind of superhigh precision micro-force measuring apparatus and measurement method based on gravity physical pendulum |
-
2022
- 2022-06-30 CN CN202210757436.XA patent/CN114910029B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB511918A (en) * | 1938-01-22 | 1939-08-25 | Bataafsche Petroleum | Gravity meter |
| CN2307288Y (en) * | 1997-01-29 | 1999-02-10 | 覃英涛 | Self-balanced vibrating sensor without power consumption |
| CN206609422U (en) * | 2017-03-10 | 2017-11-03 | 梁智 | A kind of construction automatic detection formula levelness warning device |
| CN107356961A (en) * | 2017-06-27 | 2017-11-17 | 中国地震局工程力学研究所 | Lateral attitude lower sensor horizontal quadrature maintaining body |
| CN206848495U (en) * | 2017-06-27 | 2018-01-05 | 中国地震局工程力学研究所 | Borehole seismic counts weight power self-regulated leveling device |
| CN206848487U (en) * | 2017-06-27 | 2018-01-05 | 中国地震局工程力学研究所 | Each component independence self-level(l)ing is orthogonal to keep earthquake counter device |
| CN206975231U (en) * | 2017-06-27 | 2018-02-06 | 中国地震局工程力学研究所 | The orthogonal levelling gear of sensor levels component |
| CN108981974A (en) * | 2018-07-10 | 2018-12-11 | 南京航空航天大学 | A kind of superhigh precision micro-force measuring apparatus and measurement method based on gravity physical pendulum |
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| CN114910029B (en) | 2024-02-09 |
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