CN207567644U - A kind of bridge health monitoring bearing - Google Patents
A kind of bridge health monitoring bearing Download PDFInfo
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- CN207567644U CN207567644U CN201720690712.XU CN201720690712U CN207567644U CN 207567644 U CN207567644 U CN 207567644U CN 201720690712 U CN201720690712 U CN 201720690712U CN 207567644 U CN207567644 U CN 207567644U
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- plate
- bridge
- lower support
- support plate
- oil pocket
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Abstract
The utility model discloses a kind of bridge health monitoring bearings, including upper bracket plate and lower support plate, intermediate liner plate is provided between the upper bracket plate and lower support plate, the top surface of lower support plate is provided with pelvic cavity, oil pocket is provided in pelvic cavity, setting elasticity layer at the top of oil pocket, the oil circuit that the side of lower support plate is connected at least provided with two with oil pocket, pressure sensor is provided on any one oil circuit, travel switch is provided on lower support plate or intermediate liner plate, contact, contact and upper bracket plate selective exposure are provided on travel switch.The utility model can improve the deficiencies in the prior art, reduce the construction complexity of bridge health monitoring, improve the accuracy for bridge monitoring.
Description
Technical field
The utility model is related to bridge erection technical field, especially a kind of bridge health monitoring bearing.
Background technology
In recent years, with the cumulative year after year of railway transporting amount, Partial Bridges bearing occurs that support displacement transfinites, spacer pin is cut
The diseases such as disconnected, indivedual bridge upper brackets damage more larger, have started gradually to replace at present.At present, part scientific research institutions and life
Some development works of Dynamometric support have been carried out, and are applied on bridge in production manufacturer.Some uses are good, but manufacture
It is expensive, it is limited by powering, needs integral calibrating, can not be promoted on a large scale（Such as Chinese utility model patent
200420085431.4 disclosed height adjustable force measuring basin shaped rubber support）；Some Dynamometric support costs are relatively low but complicated, survey
Accuracy of measurement is poor, and service life is short, and replacing sensor is difficult or even affects the overall performance of bearing；More biographies of some need
Dynamometry caused by sensor could solve corner variation is inaccurate.And bridge health monitoring bearing, the stress of bridge will be monitored
Situation and deflection deformation situation, and then the beam body of existing bridge and the state of pier shaft can be assessed, to bridge pier whether under
Heavy and bridge whether have the disease of crackle and the bridge service condition after various natural calamities or steamer are hit to
Go out reliable data information.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of bridge health monitoring bearings, can solve the prior art
Deficiency, reduce the construction complexity of bridge health monitoring, improve the accuracy for bridge monitoring.
In order to solve the above technical problems, technical solution adopted in the utility model is as follows.
A kind of bridge health monitoring bearing, including upper bracket plate and lower support plate, the upper bracket plate and lower support plate it
Between be provided with intermediate liner plate, the top surface of lower support plate is provided with pelvic cavity, is provided with oil pocket in pelvic cavity, and setting is flexible at the top of oil pocket
Layer, the oil circuit that the side of lower support plate is connected at least provided with two with oil pocket are provided with pressure on any one oil circuit and pass
Travel switch is provided on sensor, lower support plate or intermediate liner plate, contact is provided on travel switch, contact is selected with upper bracket plate
Selecting property contacts.
Preferably, being provided with pressure transmission plate at the top of the oil pocket, elastic layer is arranged at the top of pressure transmission plate.
Preferably, it is provided with spherical liner plate before the intermediate liner plate and upper bracket plate.
Preferably, the Poisson's ratio of the elastic layer is in 0.45-0.5.
A kind of monitoring method of above-mentioned bridge health monitoring bearing, includes the following steps：
A, determine that bridge allows the maximum value of endurance and the maximum of deflection deformation according to the weight of bridge, the corner allowed
Value；
B, when the force value that the bridge that pressure sensor is monitored is born is less than the maximum value determined in step A, and latter
Secondary data are increasedd or decreased compared with previous secondary data when within 3 times, with fixed frequency gathered data；When pressure sensor institute
The force value that the bridge monitored is born is less than the maximum value determined in step A, and latter secondary data increase compared with previous secondary data
Add deduct it is small other than 3 times when, frequency acquisition improves 50%；When the force value that the bridge that pressure sensor is monitored is born is more than
The maximum value determined in step A, but beyond value less than the 30% of maximum value, frequency acquisition improves 50%；When pressure sensor is supervised
The force value that the bridge measured is born exceeds the 30% of the maximum value determined in step A, but is less than in step A beyond value and determines most
60% be worth greatly, frequency acquisition improve 100%；The force value that the bridge that pressure sensor is monitored is born, which exceeds in step A, to be determined
Maximum value more than 60% when, frequency acquisition improve 200%；
C, when the deflection deformation of bridge is less than the maximum value determined in step A, travel switch is closed；When the bending deformation of bridge
Shape is more than the maximum value determined in step A, triggers travel switch, and frequency acquisition improves 100%；
D, when the maximum value that the force value that the bridge that pressure sensor is monitored is born is determined in the step A or row
Cheng Kaiguan is triggered, and alarms, and records the alarm duration.
It is using advantageous effect caused by above-mentioned technical proposal：The utility model is used by setting two oil pipes
One oil pipe oil inlet another oil pipe is fuel-displaced, fuel-displaced by multiple oil inlet, and the air in oil pocket is emptied, then fills oil, and
Oil pipe is closed, can not thoroughly be discharged this avoids bubble caused by oil pipe oiling single in existing patented technology and lead to dynamometry
The problem of inaccurate.The oil pocket of existing patented technology needs a prefabricated chamber, then chamber is placed in corresponding mold with multilayer rubber
In, rubber is melted, then cool down and chamber is fixed in rubber slab by heating.Chamber and rubber are being placed into mold process and sulphur
Prefabricated chamber is very big during change to move, and chamber is caused to deviate the centre position of rubber slab, with the hole in lower support plate
Road does not correspond to；Again, prefabricated chamber needs the stress for bearing 30-45MPa that can extend to adapt to oil simultaneously when filling oil
Into so there is very high requirement to the moulding material of chamber；The process of the vulcanization of rubber slab, the rubber of fusing must not enter chamber with
Ensure the presence of vulcanization back cavity, problems so that the processing technology difficulty of height adjustable force measuring basin shaped rubber support is big, and yields is low.
And the utility model sets oil pocket inside lower support plate, by the way that in one circular groove of lower support plate internal turning, top is close
It seals a pressure transmission plate can be completed, simple for process, easy to process, yields is high.
Elastic layer used in the utility model using Poisson's ratio 0.45-0.5 ranges material because Poisson's ratio exists
The material of 0.45-0.5 ranges has isotropic characteristic, and isotropism refers to the property of the physics of object, chemistry etc. not
The characteristic that can be varied from due to the difference in direction, i.e., jobbie is in the complete phase of performance value measured by different directions
Together.The vertical force of bridge health monitoring bearing is by the way that on holder top structure function to elastic layer, elastic layer again transmits force value
Its underpart structure, i.e. oil pocket and oil pocket outside left are given, according to the isotropic characteristic of elastic layer, even if on the outside of oil pocket and oil pocket
Position is due to power and its that pressure that mismachining tolerance causes on same surface, not pass to oil pocket is that elastic layer is subject to
The ratio of area measures force value precision so as to be effectively ensured.However material of the Poisson's ratio outside 0.45-0.5 ranges, without each
To the characteristic of the same sex.Force value is in transmittance process, if oil pocket surface, higher than on the outside of oil pocket, oil pocket bears most vertical
Power, pressure is big, is multiplied by after area is converted into pressure, force value is bigger than normal；If less than on the outside of oil pocket, oil pocket is born very on oil pocket surface
Small vertical force, pressure is small, is multiplied by after area is converted into pressure, force value is less than normal, and the force value precision in turn resulting in measurement is low.
Travel switch is used to measure the suitable bridge of bridge to deflection deformation.Before bearing installation according to the corner allowable of bridge with
And the contact of travel switch and the parameters such as horizontal distance of center of rotation, calculate contact and bearing upper plate or beam body it is vertical away from
From；After bearing installation, according to the position for counting counted vertical distance adjustment contact；During bearing use, when bridge along bridge to
Deflection deformation in normal range (NR), contact is not contacted with bearing upper plate or beam body, and travel switch is closed, and works as bridge
What beam occurred deforms more than allowed band, and contact is contacted with bearing upper plate or beam body, and travel switch is started to work, and monitors system
With a certain frequency collection force value data and alarm.Both data garbage can be caused, again to avoid extra normal data is acquired in this way
Electricity can be saved, extends the service life of battery.
Travel switch be separately mounted to bearing along bridge to（Bridge length direction）Both sides, respectively close to bridge central side
With close bridge end side.When the travel switch close to bridge central side is connected, in fact it could happen that traction engine or bridge localized cracks
Situations such as；When the travel switch close to bridge end side is connected, in fact it could happen that situations such as pier sinking.
The utility model is also to have essential distinction with other types of device for measuring force in the prior art.Existing other classes
The device for measuring force of type is generally to be supported dynamometry using the structure of jack type.The utility model uses oil pocket load-bearing, utilizes
Liquid respectively to pressure it is equal and incompressible the characteristics of, measure hydraulic pressure, and then convert bearing bearing capacity；The prior art is weighed
Device is weighed using weighing instrument.Although self-adaptive hydraulic load carrier is directed to hydraulic pressure, its hydraulic pressure is and hydraulic jack phase
Even, it is unrelated with weighing for the jacking of jack；Oil pocket in bridge health monitoring bearing can subsequently supplement fluid, but only
It need to ensure that oil pocket upper surface is smooth, be not required to jacking bearing.And the device for measuring force of jack structure be all with cylinder body and
Piston, sealing ring is provided between, it is easy to which the phenomenon that oil leak occurs in breakage so that the force value of measurement is inaccurate.And
On bridge pad, sealing ring can not be replaced, the force measuring function of bearing will also can not achieve.The utility model designs oil pocket
In the inside of bearing, the piston that does not move up and down reduces the risk of oil leak；If there is the situation of oil leak, can also and
When supplemented by oil inlet and outlet, be effectively guaranteed the function of bearing dynamometry.
Description of the drawings
Fig. 1 is the structure chart of the utility model embodiment 1.
Fig. 2 is the structure chart of the utility model embodiment 2.
In figure：1st, upper bracket plate；2nd, lower support plate；3rd, intermediate liner plate；4th, elastic layer；5th, oil pocket；6th, pressure transmission plate；7、
Oil pipe；8th, pressure sensor；9th, travel switch；10th, contact；11st, spherical liner plate.
Specific embodiment
The standardized element used in the utility model can commercially, and shaped piece is according to specification and attached
The record of figure can carry out it is customized, the specific connection mode of each part using bolt ripe in the prior art, rivet,
The conventional means such as welding, stickup, this will not be detailed here.
With reference to Fig. 1, one specific embodiment of the utility model includes upper bracket plate 1 and lower support plate 2, the upper bracket
Intermediate liner plate 3 is provided between plate 1 and lower support plate 2, the top surface of lower support plate 2 is provided with pelvic cavity, oil pocket is provided in pelvic cavity
5,5 top of oil pocket is provided with pressure transmission plate 6, the top setting elasticity layer 4 of pressure transmission plate 6.The both sides of lower support plate 2 point
Pressure sensor 8 She Zhi not be provided on any one oil pipe 7 there are one the oil pipe 7 that is connected with oil pocket 5, in lower support plate 2
Travel switch 9 is provided with, contact 10, contact 10 and 1 selective exposure of upper bracket plate are provided on travel switch 9.
A kind of monitoring method of above-mentioned bridge health monitoring bearing, includes the following steps：
A, determine that bridge allows the maximum value of endurance and the maximum of deflection deformation according to the weight of bridge, the corner allowed
Value；
B, when the force value that the bridge that pressure sensor 8 is monitored is born is less than the maximum value determined in step A, and latter
Secondary data are increasedd or decreased compared with previous secondary data when within 3 times, with fixed frequency gathered data；When pressure sensor 8
The force value that the bridge monitored is born is less than the maximum value determined in step A, and latter secondary data are compared with previous secondary data
It increaseds or decreases when other than 3 times, frequency acquisition improves 50%；When the force value that the bridge that pressure sensor 8 is monitored is born is big
The maximum value determined in step A, but beyond value less than the 30% of maximum value, frequency acquisition improves 50%；When 8 institute of pressure sensor
The force value that the bridge monitored is born exceeds the 30% of the maximum value determined in step A, but is less than what is determined in step A beyond value
The 60% of maximum value, frequency acquisition improve 100%；The force value that the bridge that pressure sensor 8 is monitored is born exceeds in step A really
Fixed maximum value more than 60% when, frequency acquisition improve 200%；
C, when the deflection deformation of bridge is less than the maximum value determined in step A, travel switch 9 is closed；When the flexure of bridge
Deformation is more than the maximum value determined in step A, triggers travel switch 9, and frequency acquisition improves 100%；
D, when the maximum value that the force value that the bridge that pressure sensor 8 is monitored is born is determined in the step A or
Travel switch 9 is triggered, and alarms, and records the alarm duration.
Embodiment 2
With reference to Fig. 2, the present embodiment improves on the basis of embodiment 1.Intermediate liner plate 3 and upper bracket plate 1 it
Before be provided with spherical liner plate 11.The Poisson's ratio of elastic layer 4 is between 0.45-0.5（Poisson's ratio, material is unidirectional tension or in compression
When, the ratio of transverse normal strain and the absolute value of axial normal strain）.Elastic layer with this characteristic can be transmitted reliably vertically
Power, and can deform and ensure oil pocket upper surface uniform stressed.
The utility model directly detects the vertical applied force situation of bridge pad using oil pressure, and the process of dynamometry is easy to implement,
Seat structure is simple, easy to process.Using switching circuit measure bridge deflection deformation, it is at low cost, at the same exclude it is extra just
Regular data reduces the difficulty of data processing..
In the description of the present invention, it is to be appreciated that term " longitudinal direction ", " transverse direction ", " on ", " under ", " preceding ",
The orientation or position relationship of the instructions such as " rear ", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " be based on
Orientation shown in the drawings or position relationship are for only for ease of description the utility model rather than instruction or imply signified dress
It puts or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that the utility model
Limitation.
The basic principle of the utility model and main feature and the advantages of the utility model has been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the present utility model is not limited to the above embodiments, described in above embodiments and description
Only illustrate the principle of the utility model, on the premise of not departing from the spirit and scope of the utility model, the utility model is also
Various changes and modifications are had, these various changes and improvements fall within the scope of the claimed invention.The utility model
Claimed range is defined by the appending claims and its equivalent thereof.
Claims (4)
1. a kind of bridge health monitoring bearing, including upper bracket plate（1）And lower support plate（2）, it is characterised in that：The upper bracket
Plate（1）And lower support plate（2）Between be provided with intermediate liner plate（3）, lower support plate（2）Top surface be provided with pelvic cavity, set in pelvic cavity
It is equipped with oil pocket（5）, oil pocket（5）Top sets elasticity layer（4）, lower support plate（2）Side at least provided with two and oil pocket
（5）The oil circuit being connected（7）, any one oil circuit（7）On be provided with pressure sensor（8）, lower support plate（2）Or intermediate liner plate
（3）On be provided with travel switch（9）, travel switch（9）On be provided with contact（10）, contact（10）With upper bracket plate（1）Selection
Property contact.
2. bridge health monitoring bearing according to claim 1, it is characterised in that：The oil pocket（5）Top is provided with pressure
Strong transmission plate（6）, elastic layer（4）It is arranged on pressure transmission plate（6）Top.
3. bridge health monitoring bearing according to claim 2, it is characterised in that：The intermediate liner plate（3）With upper bracket
Plate（1）It is provided with spherical liner plate before（11）.
4. bridge health monitoring bearing according to claim 1, it is characterised in that：The elastic layer（4）Poisson's ratio exist
0.45-0.5。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720690712.XU CN207567644U (en) | 2017-06-14 | 2017-06-14 | A kind of bridge health monitoring bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720690712.XU CN207567644U (en) | 2017-06-14 | 2017-06-14 | A kind of bridge health monitoring bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207567644U true CN207567644U (en) | 2018-07-03 |
Family
ID=62697687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720690712.XU Active CN207567644U (en) | 2017-06-14 | 2017-06-14 | A kind of bridge health monitoring bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207567644U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107059606A (en) * | 2017-06-14 | 2017-08-18 | 中国铁路设计集团有限公司 | A kind of bridge health monitoring bearing and its monitoring method |
| CN110567514A (en) * | 2019-08-22 | 2019-12-13 | 北京建筑大学 | bridge structure safety state monitoring system and monitoring method based on intelligent support |
| CN111172859A (en) * | 2019-12-12 | 2020-05-19 | 广州大学 | Bridge limiting device |
| CN112663479A (en) * | 2020-12-04 | 2021-04-16 | 山东交通职业学院 | Highway anti-seismic device |
-
2017
- 2017-06-14 CN CN201720690712.XU patent/CN207567644U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107059606A (en) * | 2017-06-14 | 2017-08-18 | 中国铁路设计集团有限公司 | A kind of bridge health monitoring bearing and its monitoring method |
| CN110567514A (en) * | 2019-08-22 | 2019-12-13 | 北京建筑大学 | bridge structure safety state monitoring system and monitoring method based on intelligent support |
| CN111172859A (en) * | 2019-12-12 | 2020-05-19 | 广州大学 | Bridge limiting device |
| CN112663479A (en) * | 2020-12-04 | 2021-04-16 | 山东交通职业学院 | Highway anti-seismic device |
| CN112663479B (en) * | 2020-12-04 | 2022-08-05 | 山东交通职业学院 | Highway anti-seismic device |
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