CN112304543B - High-precision bridge deflection testing device - Google Patents
High-precision bridge deflection testing device Download PDFInfo
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- CN112304543B CN112304543B CN202011226606.9A CN202011226606A CN112304543B CN 112304543 B CN112304543 B CN 112304543B CN 202011226606 A CN202011226606 A CN 202011226606A CN 112304543 B CN112304543 B CN 112304543B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0008—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings of bridges
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0041—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress
- G01M5/005—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress by means of external apparatus, e.g. test benches or portable test systems
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- Aviation & Aerospace Engineering (AREA)
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Abstract
The invention provides a high-precision bridge deflection testing device. High accuracy bridge amount of deflection testing arrangement includes: a first fixed block; the base is fixedly arranged on the outer wall of one side of the first fixing block; the motor is arranged at the top of the base; the first groove is fixedly formed in the top of the base; the rotating block is rotatably arranged in the first groove; the first belt pulley and the first belt pulley are fixedly sleeved on the rotating block; the second belt pulley is fixedly sleeved on the output shaft of the motor; the belt is sleeved on the first belt pulley and the second belt pulley. The high-precision bridge deflection testing device provided by the invention has the advantages of multi-azimuth deflection testing and convenience in disassembly.
Description
Technical Field
The invention relates to the technical field of deflection testing, in particular to a high-precision bridge deflection testing device.
Background
The deflection refers to the linear displacement of the axis of the rod piece in the direction vertical to the axis or the linear displacement of the middle surface of the plate shell in the direction vertical to the middle surface when the bridge is subjected to bending deformation, and the linear displacement of the center of the cross section in the direction vertical to the axis when the bridge is subjected to stress or non-uniform temperature change. The deflection of the thin plate or the thin shell refers to the displacement of each point on the middle surface on the normal line of the middle surface of the point, and the deflection function or the displacement function of each point on the object changes along with the position and the time, and the deflection is related to the load size, the section size of the component and the physical property of the material of the component.
The publication number CN110487496A discloses a method for identifying bridge deflection based on an improved bending moment area method of long gauge length strain, based on the improved bending moment area method, a function relation between deflection and strain can be deduced, and the deflection distribution of any point on a structure along with time change and the deflection distribution of the structure at any moment can be obtained by combining the measured strain through a formula.
In the related art, a laser type concrete linear bridge deflection testing device is disclosed, which comprises a fixing mechanism, a leveling mechanism, a laser emitter and an identification ruler; the fixing mechanism is fixed at the bottom of the bridge with the test section, the leveling mechanism is connected with the fixing mechanism, the laser emitter is connected with the leveling mechanism, the marking ruler is installed at the bottom of the main beam with the support section, and the laser emitter reads the reading of the marking ruler. The invention has simple structure and convenient use, can improve the bridge deflection testing efficiency and ensure the bridge deflection testing precision.
However, the structure has the defects that the structure can only detect a single position of a bridge, the structure cannot detect multiple directions, most bridge floors are wide, deflection at different positions is different, the deflection of the bridge is difficult to completely detect at the single position, most laser range finders are fixedly installed, and the laser range finders are troublesome to disassemble after being used or when no electricity exists.
Therefore, it is necessary to provide a new high-precision bridge deflection testing device to solve the above technical problems.
Disclosure of Invention
The invention solves the technical problem of providing a high-precision bridge deflection testing device which is used for multi-azimuth deflection testing and convenient to disassemble.
In order to solve the technical problem, the high-precision bridge deflection testing device provided by the invention comprises: a first fixed block; the base is fixedly arranged on the outer wall of one side of the first fixing block; the motor is arranged at the top of the base; the first groove is fixedly formed in the top of the base; the rotating block is rotatably arranged in the first groove; the first belt pulley is fixedly sleeved on the rotating block, and the inner wall of the first belt pulley is in gear transmission connection with the outer wall of the rotating block; the second belt pulley is fixedly sleeved on the output shaft of the motor; the belt is sleeved on the first belt pulley and the second belt pulley; the sleeve is fixedly installed at the top of the rotating block, a telescopic rod is arranged in the sleeve, a sliding plug is fixed on the telescopic rod and is in sliding connection with the inner wall of the sleeve, a sliding rheostat is arranged on one side of the bottom of the sleeve, and a sliding rod of the sliding rheostat is fixedly connected with the bottom of the telescopic rod; the second groove is formed in the outer wall of one side of the sleeve; the air cylinder is fixedly arranged on the outer wall of one side of the sleeve; the fixed rod is fixedly arranged in the second groove; the first sliding block is provided with a fixed rod in a sliding manner; the connecting block is fixedly arranged on the outer wall of one side of the first sliding block, and the bottom of the connecting block is fixedly connected with the output shaft of the air cylinder; the connecting rod is hinged to the top of the connecting block; one side of the first box body is fixed on the top of the telescopic rod, and the outer wall of one side of the first box body is hinged with the top end of the connecting rod; the laser range finder comprises a first box body, a second box body, a mounting plate, a push block, a second slide block, a first clamping block, a mounting block and a clamping groove, wherein the mounting plate is hinged to the outer wall of one side of the first box body, the push block is arranged in the first box body and is contacted with the outer wall of one side of the laser range finder, the two first springs are fixedly arranged on the inner wall of one side of the first box body and are fixedly connected with the outer wall of one side of the push block, the second box body is fixedly arranged at the top of the first box body and is provided with the second slide block, the first clamping block is fixedly arranged on the outer wall of one side of the mounting plate, one side of the first clamping block extends into the second box body, the; the laser range finder is arranged in the first box body;
when the deflection of a certain section of the bridge is tested, target points which are arranged to be consistent with the height of the laser range finder when the tail end of the telescopic rod is arranged at the bottommost part of the sleeve are placed at a plurality of positions on the bridge floor, the motor is started to drive the second belt pulley to rotate, the second belt pulley drives the belt and the first belt pulley to rotate, the first belt pulley drives the rotating block to rotate, the rotating block drives the sleeve to rotate, the first box body and the laser range finder are driven to rotate, and the target points are searched for the horizontal position,
and when the laser range finder rotates for one circle, the cylinder drives the connecting block to move upwards for a certain distance, the connecting block drives the connecting rod to move upwards, the connecting rod drives the first box body to move upwards, meanwhile, the telescopic rod drives the sliding rod of the sliding rheostat to move upwards, stable voltage is applied to the sliding rheostat, the sliding distance of the sliding rod is obtained according to the voltage value change, the height change value of the laser range finder is judged, and a large number of data points of the bridge floor at the section are obtained through the distance of a target point and the height change value measured by the laser range finder.
As a further scheme of the invention, four mounting holes are formed in the outer wall of one side of the first fixing block, and the four mounting holes are distributed in a rectangular shape.
As a further scheme of the invention, the top of the base is fixedly provided with an installation seat, and the outer wall of one side of the installation seat is fixedly connected with the motor.
As a further scheme of the invention, a sliding hole is formed in the top of the first sliding block, the fixing rod penetrates through the sliding hole and is in sliding connection with the inner wall of the sliding hole, and the laser range finder is fixedly connected with the inner wall of the first box body.
Compared with the prior art, the high-precision bridge deflection testing device provided by the invention has the following beneficial effects:
as a further scheme of the invention, a second fixture block is fixedly mounted at the top of the mounting block, and the top of the second fixture block extends into the clamping groove;
as a further scheme of the invention, a handle is fixedly arranged on the outer wall of one side of the mounting plate, a through hole is formed in the outer wall of one side of the mounting plate, and the laser range finder is arranged in the first box body.
Compared with the prior art, the high-precision bridge deflection testing device provided by the invention has the following beneficial effects:
the invention provides a high-precision bridge deflection testing device which comprises:
1. under the interaction of the laser range finder, the motor, the second belt pulley, the belt, the first belt pulley, the rotating block, the sleeve, the first box body, the air cylinder, the connecting block and the connecting rod, the first box body and the laser range finder rotate in multiple directions, so that more data can be tested conveniently, and the advantage of multi-direction deflection test is achieved;
2. the laser range finder is conveniently fixed in the first box body, taken out and replaced under the interaction of the second sliding block, the third sliding block, the second spring, the second clamping block, the clamping groove, the handle, the mounting plate and the first clamping block, and the laser range finder has the advantage of convenience in disassembly;
3. the bridge deflection can be accurately calculated by testing data points of bridge displacement and height change values, and meanwhile, a plurality of test points can be used for further bridge big data analysis, so that the effect is remarkable, and the application range is wide.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic side sectional structural view of a high-precision bridge deflection testing device according to a first embodiment of the invention;
FIG. 2 is a schematic front sectional view of a first embodiment of the high-precision bridge deflection testing device provided by the invention;
FIG. 3 is a schematic front sectional view of a second embodiment of the present invention;
FIG. 4 is an enlarged schematic view of portion A of FIG. 3;
FIG. 5 is a side cross-sectional structural view of a second embodiment of the present invention;
fig. 6 is a schematic view of the internal structure of the sleeve of the present invention.
Detailed Description
First embodiment
Referring to fig. 1-6, in a first embodiment of the present invention, a high-precision bridge deflection testing apparatus includes: a first fixing block 1; the base 2 is fixedly arranged on the outer wall of one side of the first fixing block 1; the motor 3 is arranged at the top of the base 2; the first groove 4 is fixedly formed in the top of the base 2; the rotating block 5 is rotatably arranged in the first groove 4; the first belt pulley 6 and the first belt pulley 6 are fixedly sleeved on the rotating block 5, and the inner wall of the first belt pulley 6 is in gear transmission connection with the outer wall of the rotating block 5; the second belt pulley 7 is fixedly sleeved on the output shaft of the motor 3; the belt 8 is sleeved on the first belt pulley 6 and the second belt pulley 7; the sleeve 9 is fixedly arranged at the top of the rotating block 5, an expansion link 26 is arranged in the sleeve 9, a sliding plug 27 is fixed on the expansion link 26, the sliding plug 27 is in sliding connection with the inner wall of the sleeve 9, a sliding rheostat 28 is arranged on one side of the bottom of the sleeve 9, and the sliding rod of the sliding rheostat is fixedly connected with the bottom of the expansion link 26; a second groove 10, wherein the second groove 10 is formed in the outer wall of one side of the sleeve 9; the cylinder 11 is fixedly arranged on the outer wall of one side of the sleeve 9; the fixing rod 12 is fixedly arranged in the second groove 10; the first sliding block 13, the first sliding block 13 is slidably mounted with the fixed rod 12; the connecting block 14 is fixedly arranged on the outer wall of one side of the first sliding block 13, and the bottom of the connecting block 14 is fixedly connected with an output shaft of the air cylinder 11; the connecting rod 15 is hinged to the top of the connecting block 14; one side of the first box body 16 is fixed on the top of the telescopic rod 26, and the outer wall of one side of the first box body 16 is hinged with the top end of the connecting rod 15; the laser range finder 17, the laser range finder 17 is set up in the first container body 16;
four mounting holes are formed in the outer wall of one side of the first fixing block 1, and the four mounting holes are distributed in a rectangular shape.
The top of base 2 is fixed with the mount pad, one side outer wall and the motor 3 fixed connection of mount pad.
The top of the first sliding block 13 is provided with a sliding hole, the fixed rod 12 penetrates through the sliding hole and is in sliding connection with the inner wall of the sliding hole, and the laser range finder 17 is fixedly connected with the inner wall of the first box 16.
The working principle of the high-precision bridge deflection testing device provided by the invention is as follows:
firstly, the device is fixedly installed on a bridge floor to be tested, when the deflection of a certain section of a bridge is required to be tested, a target point with fixed height is arranged at a plurality of different positions of the bridge floor, the height of a laser range finder 17 when the tail end of a telescopic rod 26 is arranged at the bottommost part of a sleeve 9 is consistent with the height of the target point, a starting motor 3 drives a second belt pulley 7 to rotate, the second belt pulley 7 drives a belt 8 and a first belt pulley 6 to rotate, the first belt pulley 6 drives a rotating block 5 to rotate, the rotating block 5 drives the sleeve 9 to rotate, a first box 16 and the laser range finder 17 to rotate, the cylinder 11 drives a connecting block 14 to move upwards for a certain distance for finding the target point at the horizontal position, the connecting block 14 drives a connecting rod 15 to move upwards, the connecting rod 15 drives the first box 16 to move upwards, and the telescopic rod 26 drives a slide bar of a slide rheostat 28 to, the current value change of the slide rheostat 28 can be measured by applying stable voltage to the slide rheostat 28, the current value change is linearly related to the resistance value change, and the resistance value is linearly related to the slide rod distance, so that the sliding distance of the slide rod can be obtained, the lifting height of the telescopic rod 26, namely the height change value of the laser range finder 17, is further judged, a large number of data points of the bridge deck are obtained through the distance of a target point and the change quantity of the height value measured by the laser range finder, the deflection of the bridge deck can be measured according to a bending moment area method in the prior art, for example, CN110487496A identifies the deflection of the bridge based on an improved bending moment area method of long gauge strain, and a real beam surface bending line of the bridge can be drawn by utilizing the plurality of points to perform further big data analysis.
Compared with the prior art, the high-precision bridge deflection testing device provided by the invention has the following beneficial effects:
the invention provides a high-precision bridge deflection testing device, which is characterized in that under the interaction of a laser range finder 17, a motor 3, a second belt pulley 7, a belt 8, a first belt pulley 6, a rotating block 5, a sleeve 9, a first box body 16, a cylinder 11, a connecting block 14 and a connecting rod 15, the first box body 16 and the laser range finder 17 rotate in multiple directions, so that more data can be conveniently tested, and the device has the advantage of multi-direction deflection testing; through a plurality of test points, can the accurate calculation bridge amount of deflection, can utilize a plurality of test points to do further big data analysis of bridge simultaneously, the effect is showing, and application scope is wide, makes laser range finder 17 conveniently fix and is taken out and trade in first box 16 under the interact through second slider 22, third slider, second spring, second fixture block, draw-in groove 25, handle, mounting panel 18, first fixture block 23, has convenient to detach's advantage.
Second embodiment
Based on the high-precision bridge deflection testing device provided by the first embodiment of the application, the second embodiment of the application provides another high-precision bridge deflection testing device, the second embodiment is only a further scheme of the first embodiment, and the implementation of the second embodiment does not affect the single implementation of the first embodiment.
The second embodiment of the present invention will be further explained with reference to the drawings and the embodiments
Referring to fig. 3-5, in a second embodiment of the present invention, the apparatus for testing high-precision bridge deflection further includes: mounting panel 18, the articulated installation of mounting panel 18 is on one side outer wall of first box 16, be provided with ejector pad 19 in the first box 16, ejector pad 19 contacts with one side outer wall of laser range finder 17, fixed mounting has two first springs 20 on one side inner wall of first box 16, one side outer wall fixed connection of two first springs 20 and ejector pad 19, the top fixed mounting of first box 16 has second box 21, second box 21 is provided with second slider 22, fixed mounting has first fixture block 23 on one side outer wall of mounting panel 18, one side of first fixture block 23 extends to in the second box 21, fixed mounting has mounting block 24 on one side outer wall of second slider 22, draw-in groove 25 has been seted up to the bottom of first fixture block 23.
A round bar is fixedly arranged in the second box body 21, a third sliding block is slidably arranged on the round bar, and the third sliding block is fixedly connected with the outer wall of one side of the second sliding block 22. The round bar is movably sleeved with a second spring, the bottom end of the second spring is fixedly installed on the inner wall of the bottom of the second box body 21, and the top of the second spring is fixedly installed on the inner wall of the bottom of the third sliding block.
A second clamping block is fixedly mounted at the top of the mounting block 24, and the top of the second clamping block extends into the clamping groove 25;
fixed mounting has the handle on one side outer wall of mounting panel 18, has seted up the opening on one side outer wall of mounting panel 18, and laser range finder 17 sets up in first box 16.
The working principle of the high-precision bridge deflection testing device provided by the invention is as follows:
firstly, when the laser range finder 17 needs to be replaced after the electric quantity is used up, the second slider 22 is pressed to move downwards, and the second slider 22 drives the third slider to extrude the second spring downwards;
meanwhile, the second sliding block 22 drives the mounting block 24 and the second clamping block to move downwards, so that the second clamping block is far away from the clamping groove 25, the mounting plate 18 is driven to rotate by pulling the handle, the mounting plate 18 drives the first clamping block 23 to be far away from the second box body 21, fixing of the laser range finder 17 is released, and meanwhile the first spring 20 releases elasticity to drive the push plate to move so as to push out the laser range finder 17, so that taking is convenient.
Compared with the prior art, the high-precision bridge deflection testing device provided by the invention has the following beneficial effects:
the invention provides a high-precision bridge deflection testing device, which has the advantages that a laser range finder 17 is conveniently fixed in a first box body 16 and taken out for replacement under the mutual action of a second sliding block 22, a third sliding block, a second spring, a second clamping block, a clamping groove 25, a handle, an installation plate 18 and a first clamping block 23, and the device is convenient to disassemble.
It should be noted that, the device structure and the accompanying drawings of the present invention mainly describe the principle of the present invention, and in the technology of the design principle, the settings of the power mechanism, the power supply system, the control system, and the like of the device are not completely described, but on the premise that the skilled person understands the principle of the present invention, the details of the power mechanism, the power supply system, and the control system can be clearly known, the control mode of the application document is automatically controlled by the controller, and the control circuit of the controller can be realized by simple programming of the skilled person in the art;
the standard parts used in the method can be purchased from the market, and can be customized according to the description of the specification and the accompanying drawings, the specific connection mode of each part adopts conventional means such as mature bolts, rivets, welding and the like in the prior art, the machines, parts and equipment adopt conventional models in the prior art, and the structure and the principle of the parts known by the skilled person can be known by technical manuals or conventional experimental methods.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments, or a direct or indirect use of these embodiments, without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents, as used in the related art, and all of which are intended to be encompassed by the present invention.
Claims (7)
1. The utility model provides a high accuracy bridge amount of deflection testing arrangement which characterized in that includes:
a first fixed block;
the base is fixedly arranged on the outer wall of one side of the first fixing block;
the motor is arranged at the top of the base;
the first groove is fixedly formed in the top of the base;
the rotating block is rotatably arranged in the first groove;
the first belt pulley is fixedly sleeved on the rotating block, and the inner wall of the first belt pulley is in gear transmission connection with the outer wall of the rotating block;
the second belt pulley is fixedly sleeved on the output shaft of the motor;
the belt is sleeved on the first belt pulley and the second belt pulley;
the sleeve is fixedly installed at the top of the rotating block, a telescopic rod is arranged in the sleeve, a sliding plug is fixed on the telescopic rod and is in sliding connection with the inner wall of the sleeve, a sliding rheostat is arranged on one side of the bottom of the sleeve, and a sliding rod of the sliding rheostat is fixedly connected with the bottom of the telescopic rod;
the second groove is formed in the outer wall of one side of the sleeve;
the air cylinder is fixedly arranged on the outer wall of one side of the sleeve;
the fixed rod is fixedly arranged in the second groove;
the first sliding block is provided with a fixed rod in a sliding manner;
the connecting block is fixedly arranged on the outer wall of one side of the first sliding block, and the bottom of the connecting block is fixedly connected with the output shaft of the air cylinder;
the connecting rod is hinged to the top of the connecting block;
one side of the first box body is fixed on the top of the telescopic rod, and the outer wall of one side of the first box body is hinged with the top end of the connecting rod;
the laser range finder comprises a first box body, a second box body, a mounting plate, a push block, a second slide block, a first clamping block, a mounting block and a clamping groove, wherein the mounting plate is hinged to the outer wall of one side of the first box body, the push block is arranged in the first box body and is contacted with the outer wall of one side of the laser range finder, the two first springs are fixedly arranged on the inner wall of one side of the first box body and are fixedly connected with the outer wall of one side of the push block, the second box body is fixedly arranged at the top of the first box body and is provided with the second slide block, the first clamping block is fixedly arranged on the outer wall of one side of the mounting plate, one side of the first clamping block extends into the second box body, the;
the laser range finder is arranged in the first box body;
when the deflection of a certain section of the bridge is tested, target points which are arranged to be consistent with the height of the laser range finder when the tail end of the telescopic rod is arranged at the bottommost part of the sleeve are placed at a plurality of positions on the bridge floor, the motor is started to drive the second belt pulley to rotate, the second belt pulley drives the belt and the first belt pulley to rotate, the first belt pulley drives the rotating block to rotate, the rotating block drives the sleeve to rotate, the first box body and the laser range finder are driven to rotate, and the target points are searched for the horizontal position,
and when the laser range finder rotates for one circle, the cylinder drives the connecting block to move upwards for a certain distance, the connecting block drives the connecting rod to move upwards, the connecting rod drives the first box body to move upwards, meanwhile, the telescopic rod drives the sliding rod of the sliding rheostat to move upwards, stable voltage is applied to the sliding rheostat, the sliding distance of the sliding rod is obtained according to the voltage value change, the height change value of the laser range finder is judged, and a large number of data points of the bridge floor at the section are obtained through the distance of a target point and the height change value measured by the laser range finder.
2. The high-precision bridge deflection testing device according to claim 1, wherein four mounting holes are formed in the outer wall of one side of the first fixing block, and the four mounting holes are distributed in a rectangular shape.
3. The high-precision bridge deflection testing device according to claim 1, wherein a mounting seat is fixed on the top of the base, and the outer wall of one side of the mounting seat is fixedly connected with a motor.
4. The high-precision bridge deflection testing device according to claim 1, wherein a sliding hole is formed in the top of the first sliding block, the fixing rod penetrates through the sliding hole and is in sliding connection with the inner wall of the sliding hole, and the laser range finder is fixedly connected with the inner wall of the first box body.
5. The high-precision bridge deflection testing device according to claim 1, wherein a round bar is fixedly installed in the second box body, a third sliding block is installed on the round bar in a sliding mode, the third sliding block is fixedly connected with the outer wall of one side of the second sliding block, a second spring is movably sleeved on the round bar, the bottom end of the second spring is fixedly installed on the inner wall of the bottom of the second box body, and the top of the second spring is fixedly installed on the inner wall of the bottom of the third sliding block.
6. The high-precision bridge deflection testing device according to claim 5, wherein a second clamping block is fixedly mounted at the top of the mounting block, and the top of the second clamping block extends into the clamping groove.
7. The high-precision bridge deflection testing device according to claim 5, wherein a handle is fixedly mounted on an outer wall of one side of the mounting plate, a through hole is formed in an outer wall of one side of the mounting plate, and the laser range finder is arranged in the first box body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011226606.9A CN112304543B (en) | 2020-11-05 | 2020-11-05 | High-precision bridge deflection testing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011226606.9A CN112304543B (en) | 2020-11-05 | 2020-11-05 | High-precision bridge deflection testing device |
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| Publication Number | Publication Date |
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| CN112304543A CN112304543A (en) | 2021-02-02 |
| CN112304543B true CN112304543B (en) | 2021-06-25 |
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| CN202011226606.9A Active CN112304543B (en) | 2020-11-05 | 2020-11-05 | High-precision bridge deflection testing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115235368A (en) * | 2022-07-27 | 2022-10-25 | 天津市特种设备监督检验技术研究院(天津市特种设备事故应急调查处理中心) | Method and device for measuring downward deflection of main beam of crane |
| CN115773708B (en) * | 2022-10-18 | 2023-11-14 | 苏州市汇渠工程设计咨询有限公司 | Equipment for measuring and fitting line shape of bridge deck of reconstruction and expansion bridge |
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|---|---|---|---|---|
| WO2012171157A1 (en) * | 2011-06-13 | 2012-12-20 | 中国矿业大学(北京) | Tension meter for anchor rod with constant resistance and large deformation |
| CN107560810A (en) * | 2017-09-28 | 2018-01-09 | 成都科创城科技有限公司 | A kind of multi-faceted high-precision bridge deflection measurement device |
| CN207976263U (en) * | 2018-04-03 | 2018-10-16 | 杨增福 | A kind of highway bridge detection device |
| CN208672264U (en) * | 2018-08-06 | 2019-03-29 | 武汉飞虹建设监理有限公司 | Science of bridge building management detection device |
-
2020
- 2020-11-05 CN CN202011226606.9A patent/CN112304543B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012171157A1 (en) * | 2011-06-13 | 2012-12-20 | 中国矿业大学(北京) | Tension meter for anchor rod with constant resistance and large deformation |
| CN107560810A (en) * | 2017-09-28 | 2018-01-09 | 成都科创城科技有限公司 | A kind of multi-faceted high-precision bridge deflection measurement device |
| CN207976263U (en) * | 2018-04-03 | 2018-10-16 | 杨增福 | A kind of highway bridge detection device |
| CN208672264U (en) * | 2018-08-06 | 2019-03-29 | 武汉飞虹建设监理有限公司 | Science of bridge building management detection device |
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