CN209443372U - A kind of suspension cable damper for taking into account cable tension test - Google Patents
A kind of suspension cable damper for taking into account cable tension test Download PDFInfo
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- CN209443372U CN209443372U CN201821806113.0U CN201821806113U CN209443372U CN 209443372 U CN209443372 U CN 209443372U CN 201821806113 U CN201821806113 U CN 201821806113U CN 209443372 U CN209443372 U CN 209443372U
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- face
- tension test
- cable
- damper
- connecting rod
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Abstract
The utility model discloses a kind of suspension cable dampers for taking into account cable tension test, including lever, connecting rod, damping unit and cable tension test device in damper support, face, damper support include fixing seat and support；Connecting rod is threaded through in face in lever；Damping unit includes damping unit and face external damping device in face；Cable tension test device is fixed at the bottom of lever in face, for detecting and uploading the time course data and result of spectrum analysis of Inclined Cable Vibration.The utility model, damping unit is separated with face external damping device in face, opposite internal damping coefficient can be distinguished and face external damping coefficient carries out parameter optimization, achieve the effect that at the same control plane in and out-of-plane vibration, and using damper structure lever amplification act on, will at cord clip vibration signal amplify after be transferred at cable tension test device, improve cable tension test precision, the installation and later maintenance of cable tension test device carry out on bridge floor simultaneously, avoid the risk of high altitude operation, improve safety.
Description
Technical field
The utility model relates to bridge structure vibration control technology fields, and in particular to a kind of oblique pull for taking into account cable tension test
Rope damper.
Background technique
With the increase of bridge span, the rigidity of bridge and damping become smaller, and suspension cable is easily in external wind, rain lotus traffic lotus
Load effect is lower to occur violent vibration problem, and the vibration of drag-line can cause the fatigue damage at drag-line and anchor head position to accumulate, and shorten
The service life of drag-line, causes the security risk of bridge structure.Therefore, the vibration control of drag-line is that every cable-stayed bridge requires
The problem of thinking better of, and the difference according to bridge structure feature is needed, customize reasonable damper form, optimal damping ginseng
Number.Simultaneously because drag-line is the important load-carrying member of cable-stayed bridge, the force-bearing situation of the abnormal energy Efficient Characterization structure of the Suo Li of drag-line
Exception, to the real-time monitoring of full-bridge Suo Li, as the important component of bridge structural health monitoring, to guaranteeing bridge structure
It is played an important role in terms of whole stress safety and durability.
It is engaged in suspension cable vibration damping and cable force monitoring both at home and abroad at present all independently to carry out, the common method of suspension cable vibration damping
It is that the damping vibration attenuation method of additional damping device that is, by adding different types of suspension cable damper increases the mode of suspension cable
Damping ratio, to achieve the purpose that inhibit Inclined Cable Vibration.
In order to improve cable force measurement precision, domestic and foreign scholars carry out a large amount of theoretical research, give respective vibration equation
And its analytic solutions, but they are conceived to frequency Xiang Suoli conversion aspect, are the premises in the effective spectrum information for obtaining drag-line
Lower progress, because 2 powers of the Suo Liyu frequency of drag-line are directly proportional, the error of frequency spectrum can amplify after being calculated as Suo Li.But
After being mounted with damper in practical projects, the vibration signal of drag-line is very faint, conventional cable tension test element and vibration letter
The hardware structure of number identifying processing, requires to improve.
Conventional cable force monitoring technology needs for vibrating sensor to be arranged in higher to guarantee the precision of cable tension test
Position, by sensor pick up drag-line vibration signal, then by vibration signal be transmitted to signal sampler carry out data analysis,
But the installation of this design method sensor, maintenance are all more inconvenient, and system price is higher.
In view of this, being badly in need of improving the monitoring of existing Inclined Cable Vibration and control structure, damp suspension cable
Structure does not influence the normal mounting of monitoring device, and the Vibration Condition of drag-line is monitored by monitoring device, is in the vibration of drag-line
Controlled in real-time state, while utilizing the convenience of suspension cable damping structure realization cable force monitoring device, raising measuring accuracy.
Utility model content
Technical problem to be solved in the utility model is that the monitoring of existing Inclined Cable Vibration and control structure have prison
It surveys device and control structure is independently arranged, lead to the installation of monitoring device and all inconvenient and monitoring device the measurement of maintenance
The low problem of precision.
In order to solve the above-mentioned technical problem, technical solution used by the utility model is to provide one kind and takes into account cable tension test
Suspension cable damper, comprising:
Damper support, including the fixing seat for being fixed on bridge floor and the branch being arranged at the top of the fixing seat
Seat；
Lever in face, L-shape, one end protrudes into the fixing seat, and the other end is rotatably arranged on the top of the support；
Connecting rod is threaded through in the face in lever, and the corner of lever is equipped with rotation axis outside face, the face in the face
Outer rotation axis is arranged across the connecting rod, rotates the connecting rod around rotation axis outside the face, and the one of the connecting rod
End is connect with suspension cable；
Damping unit and face external damping device in damping unit, including face, damping unit is arranged in the face in the face
The bottom of interior lever, for controlling the in plane vibration of suspension cable, the face external damping device is arranged in the fixing seat, and with
The bottom of the connecting rod connects, for controlling the out-of-plane vibration of suspension cable；
Cable tension test device is fixed at the bottom of lever in the face, for detecting the when number of passes of Inclined Cable Vibration
According to and result of spectrum analysis, and transmit it to the health monitoring center of bridge.
In the above scheme, damping unit is macromolecule sticky shearing type damper in the face, including is arranged described
Lower container in fixing seat, the lower container are equipped with two chambers, and cohesive material is filled in the chamber, in the face lever by
Two L shape square plates compositions being set side by side, by stiffening plate connection between two L shape square plates, two L shape square plates
Bottom is plate, is inserted into the cohesive material of two chambers respectively.
In the above scheme, the face external damping device is shearing-type high-damping rubber damper, including is arranged described
Two L-shaped fixed plates in fixing seat, the side of two L-shaped fixed plates are each attached on the inner wall of the fixing seat, separately
Side is oppositely arranged, and the bottom level of the connecting rod is equipped with spring steel plate, and one end of the spring steel plate is arranged in two institutes
It states between L-shaped fixed plate, and is equipped with rubber between the spring steel plate and two L-shaped fixed plates.
In the above scheme, the cable tension test device includes MEMS acceleration transducer, vibration signals collecting module, letter
Number conditioning module and data transmission module, the MEMS acceleration transducer, vibration signals collecting module are picked up vibration signal, are led to
The signal-to-noise ratio that signal conditioning module improves vibration signal is crossed, time course data and spectrum analysis knot will be vibrated by data transmission module
Fruit is transmitted to the health monitoring center of bridge.
In the above scheme, the data conditioning module improves the mode of vibration signal signal-to-noise ratio are as follows: low gain amplification-height
Fast AD conversion-high-speed digital video camera.
In the above scheme, the length that the connecting rod is inserted into lever in the face, which is less than, is not inserted into lever in the face
Length.
In the above scheme, the top of the connecting rod is equipped with cord clip, and the connecting rod passes through the cord clip and suspension cable
The contact surface of connection, the cord clip and suspension cable is equipped with rubber.
In the above scheme, the cord clip connect axis connection by cord clip with the top of the connecting rod.
In the above scheme, the bottom of the fixing seat is equipped with pedestal, and the pedestal is fixed on bridge floor.
In the above scheme, the support is fixed on the anticollision barrier of bridge by U-shaped anchor ear.
Compared with prior art, damping unit is separated with face external damping device in the utility model face, can be distinguished in opposite
Damped coefficient and face external damping coefficient carry out parameter optimization, achieve the effect that in control plane simultaneously and out-of-plane vibration, and utilization hinders
The lever amplification of Buddhist nun's device structure acts on, and will be transferred at cable tension test device after vibration signal amplification at cord clip, improves Suo Li and survey
Precision is tried, while the installation and later maintenance of cable tension test device carry out on bridge floor, avoid the risk of high altitude operation, mention
High safety.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram inside the utility model；
Fig. 3 is the schematic diagram of the utility model stress relationship.
Specific embodiment
The utility model provides a kind of suspension cable damper for taking into account cable tension test, can be simultaneously outside in control plane and face
Vibration is acted on using the lever amplification of damper structure, will be transferred at cable tension test device after vibration signal amplification at cord clip,
Cable tension test precision is improved, while the installation and later maintenance of cable tension test device carry out on bridge floor, avoids high-altitude work
The risk of industry, improves safety.The utility model is made specifically with specific embodiment with reference to the accompanying drawings of the specification
It is bright.
As shown in FIG. 1 to 3, a kind of suspension cable damper for taking into account cable tension test provided by the utility model includes damping
Lever 30, connecting rod 40, damping unit and cable tension test device 70 in device support 20, face.
Damper support 20 includes fixing seat 10 for being fixed on bridge floor and the branch that 10 top of fixing seat is arranged in
Seat 20.Lever 30 is L-shape in face, and one end protrudes into fixing seat 10, and the other end is rotatably arranged on the top of support 20.
Connecting rod 40 is threaded through in face in lever 30, and the corner of lever 30 is equipped with rotation axis 31 outside face in face, is turned outside face
Moving axis 31 is arranged across connecting rod 40, rotates connecting rod 40 around rotation axis 31 outside face, one end of connecting rod 40 and suspension cable
Connection.
Damping unit includes damping unit 50 and face external damping device 60 in face, and damping unit 50 is arranged in face Nei Gang in face
The bottom of bar 30, for controlling the in plane vibration of suspension cable, face external damping device 60 is arranged in fixing seat 10, and and connecting rod
40 bottom connection, for controlling the out-of-plane vibration of suspension cable.
Cable tension test device 70 is fixed at the bottom of lever 30 in face, for detecting the time course data of Inclined Cable Vibration
And result of spectrum analysis, and transmit it to the health monitoring center of bridge.
Damping unit 50 is macromolecule sticky shearing type damper in face, including the lower container 51 being arranged in fixing seat,
Lower container 51 is equipped with two chambers, and cohesive material, 32 groups of the L shape square plate that lever 30 is set side by side by two in face are filled in chamber
At being connected between two L shape square plates 32 by stiffening plate 33, the bottom of two L shape square plates 32 is plate, is inserted into two chambers respectively
In the cohesive material of room.
Ground is advanced optimized, damping unit 50 can also be other dampers such as oil damper in face, as long as meeting buffer bar
Part.
When suspension cable in plane vibration, lever 30 in face are transferred to by connecting rod 40, the indoor cohesive material of chamber subtracts at this time
The vibration of slow 32 bottom of L shape square plate, i.e., the effect that damping unit 50 consumes energy in performance face control the vibration of suspension cable, structure
It is simple easy to use.
Face external damping device 60 is shearing-type high-damping rubber damper, including two L shapes being arranged in fixing seat 10
Fixed plate 61, the side of two L-shaped fixed plates 61 are each attached on the inner wall of fixing seat 10, and the other side is oppositely arranged, connecting rod
40 bottom level is equipped with spring steel plate, and one end of spring steel plate is arranged between two L-shaped fixed plates 61, and spring steel plate with
Rubber is equipped between two L-shaped fixed plates 61.
With advanced optimizing, face external damping device 60 or sticky shearing type damper, frcition damper etc., as long as
Meet buffer condition.
When suspension cable out-of-plane vibration, vibration is amplified in the bottom of connecting rod 40, drives spring steel plate vibration, at this time face extrernal resistance
Buddhist nun's device 60 plays the effect of its energy consumption, i.e., slows down spring steel plate by the rubber being arranged between two L-shaped fixed plates 61
The vibration of suspension cable is vibrated and then slows down, structure is simple, and can work with damping unit 50 in face, while slowing down suspension cable
In plane vibration and out-of-plane vibration.
The cable tension test device 70 of the utility model includes MEMS acceleration transducer, vibration signals collecting module, signal
Conditioning module and data transmission module, MEMS acceleration transducer, vibration signals collecting module pick up vibration signal, pass through signal
Conditioning module improves the signal-to-noise ratio of vibration signal, will vibrate time course data by data transmission module and result of spectrum analysis transmits
To the health monitoring center of bridge.
Ground is advanced optimized, data conditioning module improves the mode of vibration signal signal-to-noise ratio are as follows: low gain amplification-high-speed AD
Conversion-high-speed digital video camera.
In terms of the dominant frequency of drag-line and vibration shape order automatic identification, genetic algorithm can be introduced and carry out deep learning, in conjunction with rope
The history effective information of power test carries out intelligent recognition to real time spectrum information.
The utility model will be transferred to damping unit, and damping by lever amplification principle after suspension cable displacement equations
Cable tension test device is set on device, realizes that cable tension test and vibration absorbing device for staying cables of bridge combine, forms intelligent suspension cable damping
Damping technology preferably guarantees the safety of bridge structure.
Ground is advanced optimized, the length of lever 30 is less than the length for being not inserted into lever 30 in face in 40 inserting surface of connecting rod,
Meet lever amplification principle, increases the precision of cable tension test device detection.
The top of connecting rod 40 is equipped with cord clip 80, and connecting rod 40 is connect by cord clip 80 with suspension cable, increases the steady of connection
It is qualitative, and in order to increase its firm type, in the contact surface of cord clip 80 and suspension cable, rubber is set.
Ground is advanced optimized, cord clip 80 is connect with the top of connecting rod 40 by cord clip connecting shaft 81, and connecting rod 40 is enable
More than enough angular turn.
Ground is advanced optimized, the bottom of fixing seat 10 is equipped with pedestal 11, is fixed on bridge floor by pedestal 11, and connection is steady
It is fixed, while preventing suspension cable damper and the too long damage of bridge floor time of contact.Support 20 is fixed on the anti-of bridge by U-shaped anchor ear
It hits on guardrail, increases the transverse strength of support 20, avoid the reduction of Vibration Mitigation of Bridge Stay Cable Using.
The utility model, damping unit is separated with face external damping device in face, can be distinguished outside opposite internal damping coefficient and face
Damped coefficient carries out parameter optimization, achievees the effect that simultaneously in control plane and out-of-plane vibration, and the lever of utilization damper structure
Amplification will be transferred at cable tension test device after vibration signal amplification at cord clip, improve cable tension test precision, while Suo Li
The installation and later maintenance of test device carry out on bridge floor, avoid the risk of high altitude operation, improve safety.
The utility model is not limited to above-mentioned preferred forms, and anyone should learn that the enlightenments in the utility model
Under the structure change made, it is all that there is same or similar technical solution with the utility model, each fall within the utility model
Within protection scope.
Claims (10)
1. a kind of suspension cable damper for taking into account cable tension test characterized by comprising
Damper support, including the fixing seat for being fixed on bridge floor and the support being arranged at the top of the fixing seat；
Lever in face, L-shape, one end protrudes into the fixing seat, and the other end is rotatably arranged on the top of the support；
Connecting rod is threaded through in the face in lever, and the corner of lever is equipped with rotation axis outside face in the face, is turned outside the face
Moving axis is arranged across the connecting rod, makes the connecting rod around the outer rotation axis rotation in the face, one end of the connecting rod and
Suspension cable connection；
Damping unit and face external damping device in damping unit, including face, damping unit is arranged in the face Nei Gang in the face
The bottom of bar, for controlling the in plane vibration of suspension cable, the face external damping device is arranged in the fixing seat, and with it is described
The bottom of connecting rod connects, for controlling the out-of-plane vibration of suspension cable；
Cable tension test device is fixed at the bottom of lever in the face, for detect Inclined Cable Vibration time course data and
Result of spectrum analysis, and transmit it to the health monitoring center of bridge.
2. a kind of suspension cable damper for taking into account cable tension test according to claim 1, which is characterized in that the face internal resistance
Buddhist nun's device is macromolecule sticky shearing type damper, and including the lower container being arranged in the fixing seat, the lower container is equipped with
Two chambers, the chamber is interior to fill cohesive material, and the L shape square plate that lever is set side by side by two in the face forms, and two
It is connected between the L shape square plate by stiffening plate, the bottom of two L shape square plates is plate, is inserted into two chambers respectively
In the cohesive material of room.
3. a kind of suspension cable damper for taking into account cable tension test according to claim 1, which is characterized in that the face extrernal resistance
Buddhist nun's device is shearing-type high-damping rubber damper, including two L-shaped fixed plates being arranged in the fixing seat, described in two
The side of L-shaped fixed plate is each attached on the inner wall of the fixing seat, and the other side is oppositely arranged, the bottom level of the connecting rod
Equipped with spring steel plate, one end of the spring steel plate is arranged between two L-shaped fixed plates, and the spring steel plate and two
Rubber is equipped between a L-shaped fixed plate.
4. a kind of suspension cable damper for taking into account cable tension test according to claim 1, which is characterized in that the Suo Li is surveyed
Trial assembly is set including MEMS acceleration transducer, vibration signals collecting module, signal conditioning module and data transmission module, described
MEMS acceleration transducer, vibration signals collecting module pick up vibration signal, improve vibration signal by signal conditioning module
Signal-to-noise ratio will vibrate time course data by data transmission module and result of spectrum analysis be transmitted to the health monitoring center of bridge.
5. a kind of suspension cable damper for taking into account cable tension test according to claim 4, which is characterized in that the data tune
Manage the mode that module improves vibration signal signal-to-noise ratio are as follows: low gain amplification-ultra high speed A/D conversion-high-speed digital video camera.
6. a kind of suspension cable damper for taking into account cable tension test according to claim 1, which is characterized in that the connecting rod
The length for being inserted into lever in the face is less than the length for being not inserted into lever in the face.
7. a kind of suspension cable damper for taking into account cable tension test according to claim 1, which is characterized in that the connecting rod
Top be equipped with cord clip, the connecting rod is connect by the cord clip with suspension cable, and the contact surface of the cord clip and suspension cable is set
There is rubber.
8. a kind of suspension cable damper for taking into account cable tension test according to claim 7, which is characterized in that the cord clip with
The top of the connecting rod connects axis connection by cord clip.
9. a kind of suspension cable damper for taking into account cable tension test according to claim 1, which is characterized in that the fixing seat
Bottom be equipped with pedestal, the pedestal is fixed on bridge floor.
10. a kind of suspension cable damper for taking into account cable tension test according to claim 1, which is characterized in that the support
It is fixed on the anticollision barrier of bridge by U-shaped anchor ear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821806113.0U CN209443372U (en) | 2018-11-02 | 2018-11-02 | A kind of suspension cable damper for taking into account cable tension test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821806113.0U CN209443372U (en) | 2018-11-02 | 2018-11-02 | A kind of suspension cable damper for taking into account cable tension test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209443372U true CN209443372U (en) | 2019-09-27 |
Family
ID=68011038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821806113.0U Withdrawn - After Issue CN209443372U (en) | 2018-11-02 | 2018-11-02 | A kind of suspension cable damper for taking into account cable tension test |
Country Status (1)
| Country | Link |
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| CN (1) | CN209443372U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109371837A (en) * | 2018-11-02 | 2019-02-22 | 中铁大桥科学研究院有限公司 | A kind of suspension cable damper for taking into account cable tension test |
-
2018
- 2018-11-02 CN CN201821806113.0U patent/CN209443372U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109371837A (en) * | 2018-11-02 | 2019-02-22 | 中铁大桥科学研究院有限公司 | A kind of suspension cable damper for taking into account cable tension test |
| CN109371837B (en) * | 2018-11-02 | 2023-08-18 | 中铁大桥科学研究院有限公司 | Stay cable damper capable of testing cable force |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200622 Address after: 430000 No.29 Hanxi Road, Qiaokou District, Wuhan City, Hubei Province Co-patentee after: CHINA RAILWAY MAJOR BRIDGE ENGINEERING GROUP Co.,Ltd. Patentee after: China Railway Qiaoyan Technology Co.,Ltd. Co-patentee after: CHINA RAILWAY BRIDGE SCIENCE RESEARCH INSTITUTE, Ltd. Address before: No. 103 430000 Qiaokou District in Hubei province Wuhan city road construction Co-patentee before: CHINA RAILWAY MAJOR BRIDGE ENGINEERING GROUP Co.,Ltd. Patentee before: CHINA RAILWAY BRIDGE SCIENCE RESEARCH INSTITUTE, Ltd. |
|
| TR01 | Transfer of patent right | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190927 Effective date of abandoning: 20230818 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20190927 Effective date of abandoning: 20230818 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |