CN213021461U - Fiber grating sensing equipment for simultaneously measuring bridge deflection and bridge body inclination - Google Patents
Fiber grating sensing equipment for simultaneously measuring bridge deflection and bridge body inclination Download PDFInfo
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- CN213021461U CN213021461U CN202022024697.XU CN202022024697U CN213021461U CN 213021461 U CN213021461 U CN 213021461U CN 202022024697 U CN202022024697 U CN 202022024697U CN 213021461 U CN213021461 U CN 213021461U
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Abstract
The utility model relates to a fiber grating sensing device for simultaneously measuring bridge deflection and bridge body inclination, which comprises a frame, wherein the frame comprises an inclination measuring framework arranged at the upper part and a deflection measuring framework arranged at the lower part; an upper fiber tube for signal line access and exit is respectively arranged on two sides of the top of the inclination measurement framework, an upper fiber grating is arranged in the inclination measurement framework, the upper fiber grating is arranged on an upper-strength beam vertically arranged in the inclination measurement framework, a pendulum bob is arranged at the free end of the upper-strength beam, limit bolts are symmetrically arranged on two sides of the pendulum bob, and the screw tops of the limit bolts can stretch towards the pendulum bob; the deflection measuring framework is provided with a lower fiber tube for signal line access and output on two sides of the top, a lower fiber grating is arranged in the deflection measuring framework, the lower fiber grating is arranged on a lower equal-strength beam transversely arranged on the top of the deflection measuring framework, a floating liquid cavity is arranged below the lower equal-strength beam, a floating barrel is arranged in the floating liquid cavity, and a limit clamp is annularly fixed on the outer wall of the floating barrel.
Description
Technical Field
The utility model relates to a bridge measuring equipment, concretely relates to simultaneous measurement bridge amount of deflection and pontic slope fiber grating sensing equipment.
Background
The bridge deflection monitoring is an important index for evaluating the state of a bridge structure, equipment for monitoring the bridge deflection is a static level gauge which monitors one-dimensional displacement in the vertical direction, but in practice, in an application field, the bridge also has tiny inclination (horizontal displacement), so that the monitoring precision cannot reach the precision required to be monitored, and the bridge inclination angle is also monitored. Therefore, a set of fiber grating sensing equipment for simultaneously measuring the bridge deflection and the bridge body inclination is needed. In addition, the existing bridge deflection monitoring equipment and bridge inclination monitoring equipment are prone to damage of core original parts of the equipment due to shaking in the transportation process, and monitoring precision and accuracy of the equipment are affected.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a simultaneous measurement bridge amount of deflection and pontic slope fiber grating sensing equipment, simple structure, and set up protective structure to equipment core original paper, avoid the equipment transportation to the damage in the equipment, guarantee the monitoring precision and the rate of accuracy of equipment.
In order to solve the technical problem, the utility model discloses a following technical scheme can realize: the fiber bragg grating sensing equipment for simultaneously measuring the deflection of a bridge and the inclination of a bridge body comprises a frame, wherein the frame comprises an inclination measuring framework arranged at the upper part and a deflection measuring framework arranged at the lower part;
an upper fiber tube for signal line access and exit is respectively arranged on two sides of the top of the inclination measurement framework, an upper fiber grating is arranged in the inclination measurement framework, the upper fiber grating is arranged on an upper-strength beam vertically arranged in the inclination measurement framework, a pendulum bob is arranged at the free end of the upper-strength beam, limit bolts are symmetrically arranged on two sides of the pendulum bob, and the screw tops of the limit bolts can stretch towards the pendulum bob;
the deflection measuring framework is characterized in that lower optical fiber tubes for signal line access and output are respectively arranged on two sides of the top of the deflection measuring framework, a lower optical fiber grating is arranged in the deflection measuring framework, the lower optical fiber grating is arranged on a lower equal-strength beam transversely arranged on the top of the deflection measuring framework, a liquid floating cavity is arranged below the lower equal-strength beam, a floating barrel is arranged in the liquid floating cavity, liquid for floating of the floating barrel is filled in the liquid floating cavity, a top rod is vertically arranged at the top end of the floating barrel, the top end of the top rod vertically faces the lower equal-strength beam, the liquid level of the liquid is located below the top end of the top rod, and a limiting clamp is annularly fixed on.
Furthermore, the upper part of the liquid floating cavity is positioned below the lower equal-strength beam and is provided with a mandril limiting part, and the liquid level of the liquid is positioned below the mandril limiting part.
Still further, be provided with two sets of three-way valves on the lateral wall of superficial liquid chamber, two sets of three-way valves are symmetrical arrangement from top to bottom, connect the liquid pipe between two sets of three-way valves, and two sets of fiber grating sensors down have been arranged from top to bottom on the liquid pipe, the liquid level of liquid be located the top of top three-way valve.
And furthermore, two groups of two-way valves are arranged on the side wall of the liquid floating cavity on the avoidance side of the three-way valve, the two groups of two-way valves are arranged in an up-and-down symmetrical mode, a liquid level indicating pipe is connected between the two groups of two-way valves, and the two groups of two-way valves are respectively arranged at the same height with the two groups of three-way valves.
The two-way valve is connected with the liquid level indicating pipe to display the liquid level in the floating liquid cavity, and the accurate effect of bridge deflection measurement is further ensured.
Furthermore, the upper end of the upper-strength beam is fixed in the middle of the upper wall of the inclination measuring framework, and the pendulum bob is arranged at the lower end of the upper-strength beam.
Furthermore, the pitch of the screw tops of the limiting bolts on the two sides is equal to twice the limit swing amplitude of the pendulum bob.
Furthermore, the inner side of the limit card is fastened on the cylinder wall of the buoy, the outer side of the limit card horizontally extends to the inner wall of the deflection measuring framework, and a gap is formed between the outer side of the limit card and the inner wall of the deflection measuring framework.
Still further, the limiting clamp is provided with a plurality of groups along the height direction of the buoy barrel.
Compared with the prior art, the utility model discloses can obtain including following technological effect: the utility model discloses with the integrated to one set of equipment of pontic slope measurement and bridge amount of deflection measurement, specific, pontic slope measurement is worn to meet with last optical fiber grating in the slope measurement framework from last optical fiber tube by the signal line of slope measurement, during the actual measurement, the utility model discloses on the pontic was arranged in to equipment, by the pendulum on the first-class strength roof beam swing measurement pontic inclination on the pontic. The spacing bolt restriction pendulum of setting is at the within range that can swing, and the maximum range that can swing of actual pendulum is at +/-, inwards twists when spacing bolt and moves to its dead position of lock, and it twists and moves the dead position of lock and is in the maximum range department that can swing of pendulum promptly, is carrying like this the utility model discloses during equipment, inwards twist spacing bolt and move to the dead position of lock, the utility model discloses rocking in the equipment transportation because spacing bolt's limiting displacement, avoid the pendulum to excessively swing and lead to the pendulum to exceed the round of stroke and cause the damage. The pontic deflection measurement is worn to meet with the lower fiber grating on the lower equal strength roof beam in the deflection measurement framework by the signal line of deflection measurement from lower fiber tube, during the actual measurement, the utility model discloses on the pontic was arranged in to equipment, by the vertical vibration displacement measurement pontic vertical deformation of the ejector pin of the flotation pontoon of lower equal strength roof beam below on the pontic. The spacing card that sets up on the flotation pontoon outer wall is spacing to flotation pontoon circumference, prevents like this the utility model discloses the flotation pontoon left and right sides sways in the equipment transportation causes the damage. To sum up, the utility model discloses a simultaneous measurement bridge amount of deflection and pontic slope fiber grating sensing equipment, simple structure, and set up protective structure to equipment core original paper, avoid the damage of equipment transportation to in the equipment, guarantee the monitoring accuracy and the rate of accuracy of equipment.
Drawings
The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:
FIG. 1 is a block diagram of the present invention;
fig. 2 is a structural view of the present invention.
The specific implementation mode is as follows:
embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
The fiber bragg grating sensing equipment for simultaneously measuring the deflection of a bridge and the inclination of a bridge body comprises a frame, wherein the frame comprises an inclination measuring framework 10 arranged at the upper part and a deflection measuring framework 20 arranged at the lower part;
an upper fiber tube 11 for signal line access and exit is respectively arranged on two sides of the top of the inclination measurement framework 10, an upper fiber grating 12 is arranged in the inclination measurement framework 10, the upper fiber grating 12 is arranged on an upper strength beam 13 vertically arranged in the inclination measurement framework 10, a pendulum bob 14 is arranged at the free end of the upper strength beam 13, limit bolts 15 are symmetrically arranged on two sides of the pendulum bob 14, and the screw tops of the limit bolts 15 can extend towards the pendulum bob 14;
the deflection measuring framework 20 is provided with lower fiber tubes 21 for signal line access and output on two sides of the top, a lower fiber grating 22 is arranged in the deflection measuring framework 20, the lower fiber grating 22 is arranged on a lower equal-strength beam 23 transversely arranged on the top of the deflection measuring framework 20, a floating liquid cavity 26 is arranged below the lower equal-strength beam 23, a floating barrel 27 is vertically arranged in the floating liquid cavity 26, liquid for floating of the floating barrel 27 is filled in the floating liquid cavity 26, a top rod 24 is vertically arranged at the top end of the floating barrel 27, the top end of the top rod 24 vertically faces the lower equal-strength beam 23, the liquid level of the liquid is positioned below the top end of the top rod 24, and a limiting clamp 25 is annularly arranged on the outer wall of the floating barrel 27.
The utility model discloses with the integrated one set of equipment of pontic slope measurement and bridge amount of deflection measurement, specific, pontic slope measurement is worn to meet with last optical fiber grating 12 in the slope measurement framework 10 from last optical fiber tube 11 by the signal line of slope measurement, during the actual measurement, the utility model discloses on the pontic was arranged in to equipment, by the pendulum 14 on first-class intensity roof beam 13 swing measurement pontic inclination on the pontic. The limit bolt 15 of setting limits pendulum 14 at the within range that can swing, and the maximum range that can swing of actual pendulum 14 is at 5, inwards twists when limit bolt 15 and moves to its lock position, and it twists and moves the lock position and be in pendulum 14's maximum range department that can swing promptly, is carrying like this the utility model discloses during equipment, inwards twist limit bolt 15 to the lock position, the utility model discloses rocking in the equipment transportation because limit bolt 15's limiting displacement, avoid pendulum 14 excessive swing and lead to pendulum 14 to exceed the journey and cause the damage. The pontic deflection measurement is worn to meet with the lower fiber grating 22 on the lower equal strength roof beam 23 in the deflection measurement framework 20 by deflection measurement's signal line from lower fiber tube 21, during actual measurement, the utility model discloses on the pontic was arranged in to equipment, by the vertical vibration displacement measurement pontic vertical deformation of the ejector pin 24 of the flotation pontoon 27 of lower equal strength roof beam 23 below on the pontic. Spacing card 25 that sets up on the flotation pontoon 27 outer wall is spacing to flotation pontoon 27 circumference, prevents like this the utility model discloses flotation pontoon 27 left and right sides sways in the equipment transportation causes the damage. To sum up, the utility model discloses a simultaneous measurement bridge amount of deflection and pontic slope fiber grating sensing equipment, simple structure, and set up protective structure to equipment core original paper, avoid the damage of equipment transportation to in the equipment, guarantee the monitoring accuracy and the rate of accuracy of equipment.
Further, a top rod limiting part 30 is arranged on the upper part of the liquid floating cavity 26 below the lower equal-strength beam 23, and the liquid level of the liquid is located below the top rod limiting part 30.
The arranged mandril limiting part 30 ensures the stable displacement of the mandril 24 driven by the vertical movement of the float 27, namely, the stability and no deviation of the vertical movement of the mandril 24.
Still further, two sets of three-way valves 28 are arranged on the side wall of the liquid floating cavity 26, the two sets of three-way valves 28 are arranged in an up-down symmetrical mode, a liquid pipe is communicated between the two sets of three-way valves 28, two sets of lower fiber bragg grating sensors are arranged on the liquid pipe up and down, and the liquid level of the liquid is located above the upper three-way valve 28.
The three-way valve 28 switch-on liquid pipe, two fiber grating sensors down are in the same place through the liquid pipe UNICOM about like this, and during the actual monitoring, one of them fiber grating sensor gun moves down, and another fiber grating sensor is motionless down, namely through fiber grating sensor sensing signal transmission to fiber grating 22 down, by the signal line output of the deflection measurement of fiber tube 21 down.
Still further, two groups of two-way valves 29 are arranged on the side wall of the liquid floating cavity 26 on the avoidance side of the three-way valve 28, the two groups of two-way valves 29 are arranged in an up-and-down symmetrical mode, a liquid level indicating pipe 29a is connected between the two groups of two-way valves 29, and the two groups of two-way valves 29 are respectively arranged at the same height as the two groups of three-way valves 28.
The two-way valve 29 is connected with a liquid level indicating pipe 29a to display the liquid level in the liquid floating cavity 26, so that the accurate effect of bridge deflection measurement is further ensured.
Further, the upper end of the upper beam 13 is fixed to the middle of the upper wall of the tilt measuring structure 10, and the pendulum bob 14 is disposed at the lower end of the upper beam 13.
Further, the pitch of the screw tops of the limit bolts 15 on the two sides is equal to twice the limit swing amplitude of the pendulum bob 14.
Further, the inner side of the limit clamp 25 is fastened on the cylinder wall of the float 27, the outer side of the limit clamp 25 horizontally extends to the inner wall of the deflection measuring framework 20, and a gap is formed between the outer side of the limit clamp 25 and the inner wall of the deflection measuring framework 20.
Still further, the limit clamp 25 is provided with a plurality of groups along the height direction of the buoy 27.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the principles of the present invention may be applied to any other variations and modifications without departing from the spirit and scope of the present invention, which fall within the scope of the claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides a simultaneous measurement bridge amount of deflection and bridge body slope fiber grating sensing equipment, includes the frame, its characterized in that: the frame comprises an inclination measuring framework (10) arranged at the upper part and a deflection measuring framework (20) arranged at the lower part;
an upper fiber tube (11) for signal line access and exit is respectively arranged on two sides of the top of the inclination measurement framework (10), an upper fiber grating (12) is arranged in the inclination measurement framework (10), the upper fiber grating (12) is arranged on an upper-strength beam (13) vertically arranged in the inclination measurement framework (10), a pendulum (14) is arranged at the free end of the upper-strength beam (13), limit bolts (15) are symmetrically arranged on two sides of the pendulum (14), and the screw tops of the limit bolts (15) can stretch towards the pendulum (14);
the deflection measurement framework (20) is provided with lower fiber tubes (21) for signal lines to be connected in and out on two sides of the top, a lower fiber grating (22) is arranged in the deflection measurement framework (20), the lower fiber grating (22) is arranged on a lower equal-strength beam (23) transversely arranged on the top of the deflection measurement framework (20), a floating liquid cavity (26) is arranged below the lower equal-strength beam (23), a floating barrel (27) is arranged in the floating liquid cavity (26), liquid for floating of the floating barrel (27) is filled in the floating liquid cavity (26), a top rod (24) is vertically arranged at the top end of the floating barrel (27), the top end of the top rod (24) vertically faces the lower equal-strength beam (23), the liquid level of the liquid is located below the top end of the top rod (24), and a limit clamp (25) is annularly fixed on the outer wall of the floating barrel (27).
2. The fiber grating sensing device for simultaneously measuring bridge deflection and bridge inclination according to claim 1, wherein: an ejector rod limiting part (30) is arranged on the upper part of the liquid floating cavity (26) and below the lower equal-strength beam (23), and the liquid level of the liquid is located below the ejector rod limiting part (30).
3. The fiber grating sensing device for simultaneously measuring bridge deflection and bridge inclination according to claim 2, wherein: be provided with two sets of three-way valves (28) on the lateral wall of superficial liquid chamber (26), two sets of three-way valves (28) longitudinal symmetry arrange, put through the liquid pipe between two sets of three-way valves (28), lead to and have arranged two sets of fiber grating sensors down from top to bottom on the liquid pipe, the liquid level of liquid be located the top of top three-way valve (28).
4. The fiber grating sensing device for simultaneously measuring bridge deflection and bridge inclination according to claim 3, wherein: two groups of two-way valves (29) are arranged on the side wall of the liquid floating cavity (26) and positioned on the avoidance side of the three-way valve (28), the two groups of two-way valves (29) are arranged in an up-and-down symmetrical mode, a liquid level indicating pipe (29a) is connected between the two groups of two-way valves (29), and the two groups of two-way valves (29) are arranged at the same height with the two groups of three-way valves (28) respectively.
5. The fiber grating sensing device for simultaneously measuring bridge deflection and bridge inclination according to claim 1, wherein: the upper end of the upper-strength beam (13) is fixed in the middle of the upper wall of the inclination measuring framework (10), and the pendulum bob (14) is arranged at the lower end of the upper-strength beam (13).
6. The fiber grating sensing device for simultaneously measuring bridge deflection and bridge inclination according to claim 1 or 5, wherein: the pitch of the screw tops of the limiting bolts (15) on the two sides is equal to twice the limit swing amplitude of the pendulum bob (14).
7. The fiber grating sensing device for simultaneously measuring bridge deflection and bridge inclination according to claim 1, wherein: the inner side of the limit card (25) is fastened on the cylinder wall of the buoy (27), the outer side of the limit card (25) horizontally extends to the inner wall of the deflection measuring framework (20), and a gap is formed between the outer side of the limit card (25) and the inner wall of the deflection measuring framework (20).
8. The fiber grating sensing device for simultaneously measuring bridge deflection and bridge inclination according to claim 7, wherein: the limiting clamp (25) is provided with a plurality of groups along the cylinder height direction of the floating cylinder (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022024697.XU CN213021461U (en) | 2020-09-15 | 2020-09-15 | Fiber grating sensing equipment for simultaneously measuring bridge deflection and bridge body inclination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022024697.XU CN213021461U (en) | 2020-09-15 | 2020-09-15 | Fiber grating sensing equipment for simultaneously measuring bridge deflection and bridge body inclination |
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| Publication Number | Publication Date |
|---|---|
| CN213021461U true CN213021461U (en) | 2021-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022024697.XU Active CN213021461U (en) | 2020-09-15 | 2020-09-15 | Fiber grating sensing equipment for simultaneously measuring bridge deflection and bridge body inclination |
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| Country | Link |
|---|---|
| CN (1) | CN213021461U (en) |
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2020
- 2020-09-15 CN CN202022024697.XU patent/CN213021461U/en active Active
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