CN112945117A - Movable bridge deflection detector for bridge engineering detection - Google Patents
Movable bridge deflection detector for bridge engineering detection Download PDFInfo
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- CN112945117A CN112945117A CN202110102998.6A CN202110102998A CN112945117A CN 112945117 A CN112945117 A CN 112945117A CN 202110102998 A CN202110102998 A CN 202110102998A CN 112945117 A CN112945117 A CN 112945117A
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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
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
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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
Abstract
The invention is suitable for the technical field of bridge deflection detection, and provides a movable bridge deflection detector for bridge engineering detection, wherein an X-shaped bracket is formed at the upper end of a movable bracket, a mounting bracket is formed at the left end of the movable bracket, a movable wheel is mounted on the movable bracket, a point laser emitter is mounted at the upper end of a rotating device, a movable projection target is arranged at a structural fixed position set as a reference point, an output shaft of a rotating motor is in transmission connection with a pinion, the point laser emitter is mounted on a pan head, a micro electric cylinder is mounted at the upper end of the mounting bracket, a vacuum pump is mounted at one side of a rotating base far away from the pan head, a support column is connected with the left lower end of the movable bracket, the lower end of the rotating base is mounted at the upper end of the support column, and the point laser emitter is moved and fixed to the wall surface of a target area, therefore, the point laser transmitter is convenient to install and measure.
Description
Technical Field
The invention belongs to the technical field of bridge deflection detection, and particularly relates to a movable bridge deflection detector for bridge engineering detection.
Background
The bridge deflection refers to the linear displacement of the center of the cross section of the bridge in the position along the vertical direction of the axis when the bridge is bent and deformed, and is an important index needing to be tested in bridge health condition detection. At present, bridge deflection is generally detected by a level gauge and a laser projection type deflection tester, wherein the measurement and the test by the level gauge are accurate, but the installation equipment is complex; the laser projection type deflection tester is used for detection, and is little influenced by light rays and high in precision.
In the actual measurement process, in order to ensure that the data measured by the sensor can effectively reflect the change of the bridge deflection, an operator needs to install and fix the laser transmitter in a sensitive region with the change of the bridge deflection such as a midspan folding section, but most of bridge spans are large and erected between dangerous high mountains and canyons at present, the engineering operator often needs to assume a bracket, a safety rope and the like in advance when performing measurement, and the laser transmitter is inconvenient to install and move manually.
Disclosure of Invention
The invention provides a movable bridge deflection detector for bridge engineering detection, and aims to solve the problem that a laser emitter is inconvenient to install and move manually.
The invention is realized in this way, a kind of bridge engineering detects and uses the portable bridge amount of deflection detector, wherein including moving organism, laser testing device, rotating device and fixing device;
the movable body comprises a movable support, movable wheels, flying rotors, movable rotors and a controller, the movable support is L-shaped, an X-shaped support is formed at the upper end of the movable support, an installation support is formed at the left end of the movable support, six movable wheels are arranged at the upper end and the left end of the movable support respectively, four flying rotors are uniformly arranged at intervals at the upper end of the X-shaped support respectively, and two movable rotors are arranged on the installation support respectively;
the laser emission device comprises a point laser emitter, a projection target, a video acquisition device and a computer with corresponding software pre-installed, wherein the point laser emitter is installed at the upper end of the rotating device, the mobile projection target is arranged at a structural fixed position set as a reference point, and the mobile projection target is electrically connected with the video acquisition device;
the rotating device comprises a rotating base, a rotating motor, a pinion, a gearwheel, a rotating table and a cloud platform, wherein the rotating motor is arranged in the rotating base, an output shaft of the rotating motor is in transmission connection with the pinion, the pinion is in transmission connection with the gearwheel, the rotating table is in transmission connection with the gearwheel, the cloud platform is arranged on the rotating table, and the point laser emitter is arranged on the cloud platform;
fixing device includes electric chuck main part, miniature electric jar, vacuum pump and support column, and electric chuck main part sets up at removing the organism left end, and electric chuck main part is unfixed with removing the organism, and electric chuck main part middle part right-hand member and miniature electric jar output shaft, miniature electric jar are installed in the installing support upper end, and the vacuum pump is installed in one side that the cloud platform was kept away from to the rotating basis, and the support column left end is connected with the left lower extreme of removing the support, and the installation of rotating basis lower extreme is placed in the support column upper end.
Furthermore, the left end of the rotating base is connected with the electric sucker main body through a connecting rod, a through hole is formed in the connecting rod, and the vacuum pump is used for pumping air to the electric sucker main body through the through hole.
Furthermore, two round holes are formed in the middle of the electric sucker main body, the electric sucker main body is in a shape like a Chinese character 'ji', and the two movable rotor wings are respectively arranged in the two round holes.
Furthermore, the lower end of the rotating base is provided with a supporting slide block, the upper end of the supporting column is provided with a supporting groove, and the supporting slide block is arranged in the supporting groove.
Furthermore, the connecting rod is vertically installed and fixed on the electric suction cup main body and the rotating base.
Furthermore, an electromagnet sheet is arranged between the electric sucker main body and the movable support, and the electric sucker main body is made of an iron material frame.
Further, a portion of the connecting rod adjacent to the micro electric cylinder is mounted with a damping piece.
Furthermore, an attaching plate is embedded in the area to be tested on the bridge to be tested, and the surface of the attaching plate is polished smoothly and is integrated with the bridge to be tested.
Furthermore, the attaching plate is provided with an identification positioning mark.
The beneficial technical effects related to the implementation of the invention are as follows: the point laser transmitter is moved and fixed to the wall surface where the target area is located through the moving machine body and the electric sucker main body, so that the point laser transmitter moves along with the bridge structure at the point to be measured to measure the deflection change value, and the point laser transmitter is convenient to install and measure.
Drawings
FIG. 1 is a schematic view of the assembly of the present invention in a first embodiment;
FIG. 2 is a front view of the present invention in a first embodiment;
FIG. 3 is a left side view of the present invention in a first embodiment;
FIG. 4 is a cross-sectional view of the present invention in a first embodiment;
FIG. 5 is a schematic view showing the assembly of the attachment plate according to the first embodiment of the present invention;
FIG. 6 is a schematic structural view of the present invention;
fig. 7 is a schematic structural diagram of the second embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It should be noted that the spot laser emitter 201, the projection target 202, the video capture device 203, the micro electric cylinder 402, the vacuum pump 403, the pan/tilt head 307, and the controller 105 are conventional technologies, and are common knowledge of those skilled in the art, and are not described herein again.
Example one
Referring to fig. 1-6, the invention is a mobile bridge deflection detector for bridge engineering detection, which is characterized by comprising a mobile machine body 1, a laser testing device 2, a rotating device 3 and a fixing device 4;
remove organism 1 including removing movable support 101, remove wheel 102, flight rotor 103, remove rotor 104 and controller 105, remove movable support 101 and be "L" shape, remove movable support 101 upper end and be formed with "X" shape support 1011, remove movable support 101 left end and be formed with installing support 1012, remove wheel 102 and have six and install respectively in the upper end and the left end that remove movable support 101, flight rotor 103 has four and the interval evenly to install respectively in "X" shape support 1011 upper end, remove rotor 104 and have two and install respectively on installing support 1012, remove organism 1 including the flight mode, the climbing mode, attached mode and detection mode: when the mobile body 1 is in the flight mode, the controller 105 controls the flight rotor 103 mounted on the "X" bracket 1011 to rotate, the mobile rotor 104 does not rotate, and the force generated by the flight rotor 103 will make the mobile body 1 fly; when the mobile machine body 1 is in the climbing mode, the controller 105 controls the mobile rotor 104 mounted on the mounting bracket 1012 to rotate, the rotating mobile rotor 104 generates negative pressure to make the mobile machine body 1 tightly attached to a wall surface, at this time, the rotating flying rotor 103 and the mobile wheel 102 make the mobile machine body 1 move along the wall surface, and meanwhile, the turbulent flow generated by the rotating mobile rotor 104 can approximately remove impurities such as dust on the wall surface;
preferably, an area which is sensitive to the deflection change of the bridge and smooth in the surface of the wall body and is less influenced by wind force is selected as a preferential parking position of the mobile machine body 1 in the detection mode;
the laser emitting device 2 comprises a point laser emitter 201, a projection target 202, a video acquisition device 203 and a computer 204 with corresponding software pre-installed, the point laser emitter 201 is installed at the upper end of the rotating device 3, the mobile projection target 202 is arranged at a structural fixed position set as a reference point, and the mobile projection target 202 is electrically connected with the video acquisition device 203;
the rotating device 3 comprises a rotating base 301, a rotating motor 303, a pinion 304, a gearwheel 305, a rotating table 306 and a tripod head 307, wherein the rotating motor 303 is installed in the rotating base 301, an output shaft of the rotating motor 303 is in transmission connection with the pinion 304, the pinion 304 is in transmission connection with the gearwheel 305, the rotating table 306 is in transmission connection with the gearwheel 305, the tripod head 307 is installed on the rotating table 306, the spot laser emitter 201 is installed on the tripod head 307, the rotating motor 303 can drive the pinion 304 and the gearwheel 305 to rotate, so that the rotating table 306 can rotate in a large angle, and the tripod head 307 can enable the spot laser emitter 201 to deflect in a precise angle;
the fixing device 4 comprises an electric sucker main body 401, a micro electric cylinder 402, a vacuum pump 403 and a support column 405, wherein the electric sucker main body 401 is arranged at the left end of the movable machine body 1, preferably, the adsorption end of the electric sucker main body 401 is made of rubber materials, the electric sucker main body 401 is not fixed with the movable machine body 1, the right end of the middle part of the electric sucker main body 401 is connected with an output shaft of the micro electric cylinder 402, the micro electric cylinder 402 is arranged at the upper end of an installation support 1012, the vacuum pump 403 is arranged at one side of the rotary base 301 far away from the pan-tilt head 307, the left end of the support column 405 is connected with the left lower end of the movable support 101, the lower end of the rotary base 301 is arranged at the upper end of the; the vacuum pump 403 can suck air between the electric suction cup main body 401 and the wall surface, so that the electric suction cup main body 401 is tightly attached to the wall, the mobile machine body 1 is in an attaching mode, then the controller 105 controls the flight rotor 103 and the mobile rotor 104 to stop rotating, the device is in a static state, at this time, the point laser emitter 201 emits a laser beam to the projection target 202 to form a light spot, the video acquisition device 20 can acquire the light spot formed on the projection target 202 and transmit data to the computer 204 with corresponding software installed in advance, and the computer 204 with corresponding software installed in advance can process the data and obtain the accurate coordinate position of the light spot on the projection target 202;
wherein, at the actual measurement in-process, need combine theoretical data, topography, bridge construction etc. to carry out the seeking of optimum mounted position before confirming laser emitter's mounted position, but at the actual operation in-process, because the environment of erectting of most bridges is comparatively complicated, the manual work seeks the mounting point and install laser emitter very difficult, dangerous, and can not only remote control seek fixed laser emitter's mounted position through the removal organism 1 that can fly, can also be safe, make things convenient for to help the engineering personnel to carry out interim amount of deflection detection to the bridge.
The left end of the rotating base 301 is directly connected with the electric sucker main body 401 through the connecting rod 404, so that the point laser emitter 201 is closer to be in direct contact with the wall, the point laser emitter 201 can move along with the wall, and the detection accuracy is improved; the connecting rod 404 is internally provided with a through hole, the vacuum pump 403 pumps the electric sucker main body 401 through the through hole, the connecting rod 404 is hollow, space resources can be utilized to the maximum degree while the weight can be reduced, and the arrangement of pipelines is reduced.
Two round holes 4011 have been seted up at electric chuck main part 401 middle part, and electric chuck main part 401 is "8" font, and two removal rotors 104 are established respectively in two round holes 4011, and for guaranteeing the gas tightness, two round holes 4011 circumferences are made by the rubber materials that are used for sealing, and the maximize utilizes space resources when can increase electric chuck main part 401 area by a wide margin, strengthens the area of contact of electric chuck main part 401 and wall, increases the adsorption affinity.
The lower end of the rotating base 301 is provided with a supporting sliding block 302, the upper end of the supporting column 405 is provided with a supporting groove 406 and is filled with lubricating oil, the supporting sliding block 302 is installed in the supporting groove 406, and when the micro electric cylinder 402 drives the electric sucker main body 401 to stretch and retract, the rotating base 301 is enabled to move more easily.
The connecting rod 404 is vertically fixed on the electric chuck body 401 and the rotary base 301, so that the rotary base 301 and the electric chuck body 401 are parallel to each other, and movement is facilitated.
An electromagnet sheet 407 is arranged between the electric sucker main body 401 and the moving support 101, the electric sucker main body 401 adopts an iron material frame, the electromagnet sheet 407 is electrically connected with the controller 105, and the electric sucker main body 401 is tightly attached to the moving support 101 when not extending out, so that the electric sucker main body is prevented from shaking.
The shock absorbing sheet 1013 is installed on the portion of the connecting rod 404 close to the micro electric cylinder 402 to weaken the shock to which the micro electric cylinder 402 is subjected, and prevent the joint between the micro electric cylinder 402 and the electric suction cup main body 401 from loosening due to long-term shock.
The embedding is equipped with attached plate 206 in the region that awaits measuring on the bridge that awaits measuring, attached plate 206 surface polish smoothly and with the bridge that awaits measuring integrative, preferred available concrete placement toughened glass board or directly polish smooth processing formation smooth district to this concrete surface, make electric chuck main part 401 can stably fix the region that awaits measuring on the bridge that awaits measuring, and attached plate 206 can use for a long time, compare direct mount laser emitter, attached plate 206 need not maintain almost and simple structure easily erects, economic cost is low.
The attaching plate 206 is provided with an identification positioning mark 207, which is beneficial to moving the machine body 1 to the area to be measured accurately.
The working principle of the invention is as follows: setting a target area, controlling the rotation of the flight rotor 103 and the non-rotation of the movable rotor 104 which are arranged on the X-shaped bracket 1011 by the controller 105, and enabling the movable body 1 to fly to a wall surface where the target area is located by the force generated by the flight rotor 103; then the controller 105 controls the movable rotor 104 installed on the mounting bracket 1012 to rotate, the rotating movable rotor 104 will generate negative pressure to make the movable body 1 tightly attached to the wall surface, at this time, the rotating flying rotor 103 and the moving wheel 102 make the movable body 1 move to the target area along the wall surface, and the turbulent flow generated by the rotating movable rotor 104 will substantially remove the impurities such as dust on the wall surface; driving the electric suction cup main body 401 to extend out and enable the electric suction cup main body 401 to be tightly attached to the wall surface by the micro electric cylinder 402, starting the vacuum pump 403 to suck air between the electric suction cup main body 401 and the wall surface, and enabling the electric suction cup main body 401 to be tightly attached to the wall surface; controller 105 then controls flying rotor 103 and moving rotor 104 to stop rotating, leaving the device at rest; at this time, the rotating motor 303 drives the pinion 304 and the bull gear 305 to rotate, so that the rotating table 306 can rotate at a large angle, the orientation of the point laser transmitter 201 is roughly adjusted, the pan/tilt head 307 enables the point laser transmitter 201 to deflect at a precise angle, so that the point laser transmitter 201 transmits a laser beam to the projection target 202 to form a light spot, the video acquisition equipment 20 can acquire the light spot formed on the projection target 202 and transmit the data to the computer 204 pre-installed with corresponding software, the computer 204 pre-installed with corresponding software can process the data and obtain a precise coordinate position of the light spot on the projection target 202, when a structural point to be detected is displaced along the plumb direction under the action of load, because the point laser transmitter 201 is fixed on a detected structure on the wall surface of a target area through the electric suction cup main body 401, the point laser transmitter 201 is also displaced correspondingly, so that the light spots projected on the projection target 202 also have the same displacement amount, the computer 204 pre-installed with corresponding software is used for collecting light spots twice before and after the deflection change of the structure, and calculating the vertical displacement variation of the light spots on the projection target, so that the deflection change value of the bridge structure at the point to be measured is measured.
The beneficial technical effects related to the implementation of the invention are as follows: the point laser transmitter 201 is moved and fixed to the wall surface where the target area is located through the moving machine body 1 and the electric sucker main body 401, so that the point laser transmitter 201 moves along with the bridge structure at the point to be measured to measure the deflection change value, and therefore the point laser transmitter 201 is convenient to install and measure.
Example two
Referring to fig. 7, in the second embodiment, other structures are not changed, another structural form of the rotating base 301 is provided, which aims to solve the problem that the moving body 1 is difficult to keep balance when the rotating base 301 is attached to a wall, the two ends of the rotating base 301 are provided with the supporting diagonal rods 308, one end of the supporting diagonal rod 308 close to the electric suction cup main body 401 is provided with the supporting ring 309, the supporting ring 309 is not in contact with the wall in the initial state, when the micro electric cylinder 402 drives the electric suction cup main body 401 to extend, the supporting diagonal rods 308 and the supporting ring 309 move in the same direction along with the rotating base 301, and when the electric suction cup main body 401 is attached to the wall, the supporting ring 309 contacts with the wall to form a fulcrum, so as to maintain the.
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, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. A movable bridge deflection detector for bridge engineering detection is characterized by comprising a movable machine body (1), a laser testing device (2), a rotating device (3) and a fixing device (4);
the movable body (1) comprises a movable support (101), movable wheels (102), flying rotors (103), movable rotors (104) and a controller (105), wherein the movable support (101) is L-shaped, an X-shaped support (1011) is formed at the upper end of the movable support (101), a mounting support (1012) is formed at the left end of the movable support (101), six movable wheels (102) are respectively mounted at the upper end and the left end of the movable support (101), four flying rotors (103) are uniformly mounted at intervals at the upper end of the X-shaped support (1011), and two movable rotors (104) are respectively mounted on the mounting support (1012);
the laser emitting device (2) comprises a point laser emitter (201), a projection target (202), a video acquisition device (203) and a computer (204) pre-installed with corresponding software, the point laser emitter (201) is installed at the upper end of the rotating device (3), the mobile projection target (202) is arranged at a structural fixed position set as a reference point, and the mobile projection target (202) is electrically connected with the video acquisition device (203);
the rotating device (3) comprises a rotating base (301), a rotating motor (303), a pinion (304), a gearwheel (305), a rotating table (306) and a tripod head (307), wherein the rotating motor (303) is installed in the rotating base (301), an output shaft of the rotating motor (303) is in transmission connection with the pinion (304), the pinion (304) is in transmission connection with the gearwheel (305), the rotating table (306) is in transmission connection with the gearwheel (305), the tripod head (307) is installed on the rotating table (306), and the point laser emitter (201) is installed on the tripod head (307);
fixing device (4) include electric chuck main part (401), miniature electric jar (402), vacuum pump (403) and support column (405), electric chuck main part (401) set up remove organism (1) left end, electric chuck main part (401) with it is unset to remove organism (1), electric chuck main part (401) middle part right-hand member with miniature electric jar (402) output shaft is connected, install miniature electric jar (402) installing support (1012) upper end, vacuum pump (403) are installed rotating base (301) are kept away from one side of cloud platform (307), support column (405) left end with it connects to remove support frame (101) left side lower extreme, rotating base (301) lower extreme installation is placed support column (405) upper end.
2. The mobile bridge flexibility detector for bridge engineering detection according to claim 1, wherein: the left end of the rotating base (301) is connected with the electric sucker main body (401) through a connecting rod (404), a through hole is formed in the connecting rod (404), and the vacuum pump (403) sucks air from the electric sucker main body (401) through the through hole.
3. The mobile bridge flexibility detector for bridge engineering detection according to claim 1, wherein: two round holes (4011) have been seted up at electric chuck main part (401) middle part, electric chuck main part (401) are "8" font, two remove rotor (104) and establish two respectively in round hole (4011).
4. The mobile bridge flexibility detector for bridge engineering detection as claimed in claim 2, wherein: the lower end of the rotating base (301) is provided with a supporting sliding block (302), the upper end of the supporting column (405) is provided with a supporting groove (406), and the supporting sliding block (302) is installed in the supporting groove (406).
5. The mobile bridge flexibility detector for bridge engineering detection as claimed in claim 2 or 4, wherein: the connecting rod (404) is vertically installed and fixed on the electric sucker main body (401) and the rotating base (301).
6. The mobile bridge flexibility detector for bridge engineering detection as claimed in claim 5, wherein: electric chuck main part (401) with be equipped with electromagnetism piece (407) between movable support (101), electric chuck main part (401) adopt the iron material frame.
7. The mobile bridge flexibility detector for bridge engineering detection as claimed in claim 6, wherein: the part of the connecting rod (404) close to the micro electric cylinder (402) is provided with a damping sheet (1013).
8. The mobile bridge flexibility detector for bridge engineering detection according to claim 1, wherein: an attachment plate (206) is embedded in the area to be tested on the bridge to be tested, and the surface of the attachment plate (206) is polished smoothly and is integrated with the bridge to be tested.
9. The mobile bridge flexibility detector for bridge engineering detection as claimed in claim 8, wherein: the attaching plate (206) is provided with an identification positioning mark (207).
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| CN202110102998.6A CN112945117B (en) | 2021-01-26 | 2021-01-26 | Movable bridge deflection detector for bridge engineering detection |
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| CN202110102998.6A CN112945117B (en) | 2021-01-26 | 2021-01-26 | Movable bridge deflection detector for bridge engineering detection |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115682978A (en) * | 2022-12-06 | 2023-02-03 | 北京路桥瑞通科技发展有限公司 | Deflection measuring device for bridge engineering |
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