CN113483724A - Deflection measuring device for small-deflection bridge detection and detection method thereof - Google Patents
Deflection measuring device for small-deflection bridge detection and detection method thereof Download PDFInfo
- Publication number
- CN113483724A CN113483724A CN202110858981.3A CN202110858981A CN113483724A CN 113483724 A CN113483724 A CN 113483724A CN 202110858981 A CN202110858981 A CN 202110858981A CN 113483724 A CN113483724 A CN 113483724A
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- deflection
- assembly
- bridge
- measuring device
- inner base
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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
- G01B21/32—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 the deformation in a solid
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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
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/30—Measuring arrangements characterised by the use of mechanical techniques for measuring the deformation in a solid, e.g. mechanical strain gauge
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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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention provides a deflection measuring device for detecting a small-deflection bridge and a detection method thereof, wherein the deflection measuring device comprises a base (1), an inner base (5), an adjusting assembly, a measuring assembly, a gravity assembly and a connecting assembly; the base (1) is connected with the inner base (5) through an adjusting component; the adjusting component is used for adjusting the relative position of the base (1) and the inner base (5); the measuring assembly is arranged on the inner base (5) and used for measuring the deflection of the bridge; the gravity assembly (6) is arranged on the inner base (5) and is used for preventing the inner base (5) from swinging; the connecting assembly is used for connecting the gravity assembly with the bridge. According to the invention, the gravity assembly and the adjusting assembly are arranged, so that the measuring assembly is ensured to be in a vertical state all the time and cannot swing due to external factors, and the deflection measurement precision is ensured.
Description
Technical Field
The invention relates to the technical field of three-dimensional laser scanning, in particular to a deflection measuring device for detecting a small-deflection bridge and a detection method thereof.
Background
In the prior art, for small deflection (deflection is less than or equal to 1mm) deformation structures (such as arch bridges and the like) in the detection process, a dial indicator or a displacement sensor is adopted for measurement in the measurement process, and when the method is interfered by weather conditions (such as external conditions of wind speed and the like), a suspended plumb ball swings, so that the measurement precision is greatly reduced. The auxiliary facility for fixing the dial indicator or the displacement sensor can resist the interference of wind in the measuring process, so that the deflection measuring precision is ensured.
Disclosure of Invention
The invention aims to provide a deflection measuring device for detecting a small-deflection bridge and a detecting method thereof, wherein the deflection measuring device can fix a dial indicator for measuring the deflection of the bridge.
In order to achieve the aim, the invention provides a deflection measuring device for detecting a small-deflection bridge and a detection method thereof, wherein the deflection measuring device comprises a base, an inner base, an adjusting assembly, a measuring assembly, a gravity assembly and a connecting assembly; the base is connected with the inner base through the adjusting assembly; the adjusting component is used for adjusting the relative position of the base and the inner base; the measuring assembly is arranged on the inner base and used for measuring the deflection of the bridge; the gravity assembly is arranged on the inner base and used for preventing the inner base from swinging; the connecting assembly is used for connecting the gravity assembly with the bridge.
Preferably, the base is internally provided with an adsorption mechanism for fixation.
Preferably, the inner base is internally provided with a sliding rail used for being connected with the gravity assembly.
Preferably, the adjusting assembly comprises an adjusting bolt and a level bubble, the adjusting bolt is used for realizing the connection between the base and the inner base, and the level bubble is installed at the central position of the cross section of the inner base and used for detecting whether the inner base is in a horizontal state or not.
Preferably, the measuring assembly comprises a fixing part and a measuring part for detecting the deflection of the bridge, one end of the fixing part is connected with the inner base, and the other end of the fixing part is connected with the measuring part for fixing the measuring part.
Preferably, the connecting assembly comprises a pull ring and a lifting rope, and the pull ring gravity assembly is connected with the bridge through the lifting rope.
As a further scheme of the invention: the adsorption mechanism is set to be a permanent magnet.
Preferably, a switch for controlling the on or off of the adsorption mechanism is further arranged on the base.
As a further scheme of the invention: the measuring part is one or the combination of more than one of a dial indicator, a displacement sensor, a laser position detector and an inclinometer.
As a further scheme of the invention: the method for detecting the bridge deflection by using the deflection measuring device provided by the application specifically comprises the following steps:
1) installation and preparation: installing a deflection measuring device, driving an expansion bolt into a detection point of the bridge, installing a fixed structure at a position corresponding to the detection point, connecting the deflection measuring device with the expansion bolt and the fixed structure simultaneously, and keeping the inner base in a horizontal state by adjusting an adjusting assembly;
2) deflection detection: and starting the measuring piece to record the deflection numerical value of the bridge in real time, and calculating the lower deflection of the bridge through the change of the logarithmic value so as to realize the detection of the lower deflection of the bridge structure.
Compared with the prior art, the invention has the following beneficial effects:
(1) according to the invention, the gravity assembly and the adjusting assembly are arranged, so that the measuring assembly is ensured to be in a vertical state all the time and cannot swing due to external factors, and the deflection measurement precision is ensured.
(2) According to the invention, the adsorption mechanism is arranged on the base, so that the installation is simple and rapid, and the adaptability is wide.
(3) According to the invention, the adsorption mechanism is set to be the permanent magnet, so that the adsorption mechanism has the characteristic of simple operation.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic front view of the overall structure of the present invention;
fig. 2 is a schematic top view of the overall structure of the present invention.
Wherein:
1. base, 2, adjusting bolt, 3, level bubble, 4, mounting, 5, interior base, 6, gravity piece, 7, pull ring, 8, switch.
Detailed Description
In order to make the aforementioned objects, features, advantages, and the like of the present invention more clearly understandable, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the drawings of the present invention are simplified and are not to precise scale, and are provided for convenience and clarity in assisting the description of the embodiments of the present invention; the several references in this disclosure are not limited to the particular numbers in the examples of the figures; the directions or positional relationships indicated by ' front ' middle, ' rear ' left ', right ', upper ', lower ', top ', bottom ', middle ', etc. in the present invention are based on the directions or positional relationships shown in the drawings of the present invention, and do not indicate or imply that the devices or components referred to must have a specific direction, nor should be construed as limiting the present invention.
In this embodiment:
referring to fig. 1 and 2, the deflection measuring device for detecting a small-deflection bridge and the detection method thereof provided by the invention comprise a base 1, an adjusting bolt 2, a leveling bubble 3, a fixing piece 4, an inner base 5 and a gravity piece 6; the base 1 is internally provided with a permanent magnet and is used for being adsorbed to a steel plate or a steel bracket placed on the ground for fixing; the adjusting bolt 2 is used for connecting the base 1 and the inner base 5, and the inner base 5 can be kept in a horizontal state according to the adjustment of the adjusting bolt 2, so that the accuracy of bridge deflection detection is ensured; the leveling bubble 3 is arranged at the central position of the cross section of the inner base 5 and used for detecting whether the inner base 5 is in a horizontal state or not so as to adjust the adjusting bolt 2 in real time according to the structure detected by the leveling bubble 3; one end of the fixed part 4 is connected with the inner base 5, and the other end of the fixed part is used for installing a measuring part so as to detect the numerical value of the downwarping process of the bridge in real time through the measuring part, thereby calculating the downwarping degree of the bridge; the gravity piece 6 is connected with the inner base 5 through a slide rail arranged on the inner base 5 and can slide relative to the inner base 5, so that the deflection measuring device is prevented from swinging due to the influence of external force (such as wind power and the like) by increasing the whole weight of the deflection measuring device.
Preferably, one end of the fixing member 4 is connected with the inner wall of the inner base 5 through a bolt, and the other end of the fixing member extends into the inner base 5, and the mounting positions of the fixing member 4 and the inner base 5 are adjusted, so that the measuring member mounted on the extending end of the fixing member 4 is kept in contact with the gravity member 6, and the precision of the measuring member in detecting the small deflection of the bridge is ensured.
Preferably, in order to control the on or off of the permanent magnet built in the base 1, the base 1 is further provided with a switch 8.
Preferably, in order to realize the connection of the deflection measuring device and the bridge, a pull ring 7 is further arranged on the gravity piece 6, and the pull ring 7 is connected with the bridge through a lifting rope (not shown).
The method for detecting the downwarping degree of the bridge by applying the application is as follows:
1) installation and preparation: installing a deflection measuring device, driving expansion bolts into detection points of the bridge, installing a fixed structure (the fixed structure can be provided with structures which can be attracted by magnets such as steel plates and steel bracket structures) at the corresponding positions (on the ground or in water) of the detection points, connecting the deflection measuring device with the expansion bolts through lifting ropes and connecting the deflection measuring device with the fixed structure through permanent magnets, and keeping the inner base 5 in a horizontal state through adjusting the adjusting bolts 2 so as to ensure the accuracy of bridge deflection detection;
2) deflection detection: and starting the measuring piece to record the deflection numerical value of the bridge in real time, and calculating the downwarp of the bridge through the changed numerical value so as to realize the detection of the downwarp of the bridge structure.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The deflection measuring device for detecting the small-deflection bridge is characterized by comprising a base (1), an inner base (5), an adjusting assembly, a measuring assembly, a gravity assembly and a connecting assembly;
the base (1) is connected with the inner base (5) through an adjusting component;
the adjusting component is used for adjusting the relative position of the base (1) and the inner base (5);
the measuring assembly is arranged on the inner base (5) and used for measuring the deflection of the bridge;
the gravity assembly (6) is arranged on the inner base (5) and is used for preventing the inner base (5) from swinging;
the connecting assembly is used for connecting the gravity assembly with the bridge.
2. The deflection measuring device according to claim 1, characterised in that the base (1) is built in with a suction mechanism for fixation.
3. The deflection measuring device of claim 2, wherein the attraction mechanism is configured as a permanent magnet.
4. The deflection measuring device according to claim 3, wherein a switch (8) for controlling the on or off of the adsorption mechanism is further arranged on the base (1).
5. The deflection measuring device according to claim 1, characterised in that the inner base (5) has built in slide rails for connection with a gravity assembly (6).
6. The deflection measuring device according to claim 1, characterized in that the adjusting assembly comprises an adjusting bolt (2) and a leveling bubble (3), the adjusting bolt (2) is used for realizing the connection of the base (1) and the inner base (5), and the leveling bubble (3) is installed at the central position of the cross section of the inner base (5) and is used for detecting whether the inner base (5) is in a horizontal state or not.
7. Deflection measuring device according to claim 1, characterised in that the measuring assembly comprises a fixed part (4) and a measuring piece for detecting the deflection of the bridge; one end of the fixing piece (4) is connected with the inner base (5), and the other end of the fixing piece is connected with the measuring piece for fixing the measuring piece.
8. The deflection measuring device of claim 7, wherein the measuring member is provided as one or a combination of more than one of a dial gauge, a displacement sensor, a laser position detector, and an inclinometer.
9. The deflection measuring device of claim 1, wherein the connection assembly includes a pull ring (7) and a hoist line, the pull ring (7) being connected to the gravity assembly (6) and to the bridge via the hoist line.
10. A detection method for detecting a small-deflection bridge is characterized in that the detection method by applying the deflection measuring device of any one of claims 1 to 9 is as follows:
1) installation and preparation: installing a deflection measuring device, driving an expansion bolt into a detection point of the bridge, installing a fixed structure at a position corresponding to the detection point, connecting the deflection measuring device with the expansion bolt and the fixed structure simultaneously, and keeping the inner base (5) in a horizontal state by adjusting an adjusting assembly;
2) deflection detection: and starting the measuring piece to record the deflection numerical value of the bridge in real time, and calculating the lower deflection of the bridge through the change of the logarithmic value so as to realize the detection of the lower deflection of the bridge structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110858981.3A CN113483724A (en) | 2021-07-28 | 2021-07-28 | Deflection measuring device for small-deflection bridge detection and detection method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110858981.3A CN113483724A (en) | 2021-07-28 | 2021-07-28 | Deflection measuring device for small-deflection bridge detection and detection method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113483724A true CN113483724A (en) | 2021-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110858981.3A Pending CN113483724A (en) | 2021-07-28 | 2021-07-28 | Deflection measuring device for small-deflection bridge detection and detection method thereof |
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| Country | Link |
|---|---|
| CN (1) | CN113483724A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205919940U (en) * | 2016-07-07 | 2017-02-01 | 辽宁省交通高等专科学校 | Be used for bridge model loading measuring device |
| CN206488739U (en) * | 2017-01-10 | 2017-09-12 | 高军 | A kind of bridge deflection measurement device |
| CN206531463U (en) * | 2017-01-12 | 2017-09-29 | 王羽 | A kind of bridge deflection measurement device with horizontal rotary mechanism |
| CN111692984A (en) * | 2020-06-19 | 2020-09-22 | 南京工业大学 | Bridge dynamic deflection measuring device and measuring method based on magnetic suspension technology |
-
2021
- 2021-07-28 CN CN202110858981.3A patent/CN113483724A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205919940U (en) * | 2016-07-07 | 2017-02-01 | 辽宁省交通高等专科学校 | Be used for bridge model loading measuring device |
| CN206488739U (en) * | 2017-01-10 | 2017-09-12 | 高军 | A kind of bridge deflection measurement device |
| CN206531463U (en) * | 2017-01-12 | 2017-09-29 | 王羽 | A kind of bridge deflection measurement device with horizontal rotary mechanism |
| CN111692984A (en) * | 2020-06-19 | 2020-09-22 | 南京工业大学 | Bridge dynamic deflection measuring device and measuring method based on magnetic suspension technology |
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