CN210290579U - Prestressed damping spring - Google Patents
Prestressed damping spring Download PDFInfo
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- CN210290579U CN210290579U CN201920979036.7U CN201920979036U CN210290579U CN 210290579 U CN210290579 U CN 210290579U CN 201920979036 U CN201920979036 U CN 201920979036U CN 210290579 U CN210290579 U CN 210290579U
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- piston head
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- 238000013016 damping Methods 0.000 title claims abstract description 105
- 239000007788 liquid Substances 0.000 claims abstract description 11
- 230000003068 static effect Effects 0.000 claims description 9
- 230000000694 effects Effects 0.000 abstract description 4
- 230000035939 shock Effects 0.000 abstract description 4
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 230000021715 photosynthesis, light harvesting Effects 0.000 abstract description 2
- 230000002093 peripheral effect Effects 0.000 description 24
- 238000006073 displacement reaction Methods 0.000 description 15
- 238000007789 sealing Methods 0.000 description 9
- 230000000712 assembly Effects 0.000 description 5
- 238000000429 assembly Methods 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 5
- 238000002955 isolation Methods 0.000 description 5
- 230000009467 reduction Effects 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model provides a prestressing force damping spring relates to damping spring technical field. The prestressed damping spring comprises a sleeve and two damping spring components arranged in the sleeve, and the two damping spring components are symmetrically arranged relative to the contact surface of the sleeve and the contact surface of the sleeve; the damping spring assembly comprises an oil cylinder, a pull rod, a guide cover, a liquid spring, an end cover, a piston rod, a piston head and a damping medium; one end of a pull rod extends into the oil cylinder and is connected to one side of the guide cover, the guide cover is arranged in the oil cylinder in a sliding mode, the other side of the guide cover is connected with one end of the piston rod, the other end of the piston rod is connected with the piston head, the piston head is arranged in the oil cylinder in a sliding mode and is provided with flow guide holes communicated with two sides of the piston head, damping media are filled in spaces on two sides of the piston head, the end cover is arranged between the guide cover and the piston head and is sleeved on the piston rod, the end cover is fixedly arranged in the oil cylinder, and the liquid spring is filled in. The prestressed damping spring has long service life and good energy dissipation and shock absorption effects.
Description
Technical Field
The utility model relates to a damping spring technical field particularly, relates to prestressing force damping spring.
Background
Viscous dampers, also known as hydraulic dampers, are widely applied in the aerospace industry, the military industry, the automobile industry and other industries in the early stage and are used for damping and dissipating energy; since the 70 s of the 20 th century, viscous dampers are gradually applied to bridges, buildings and other projects. The viscous damper adopts an oil cylinder type structure filled with silicone oil, and utilizes the viscous characteristic of liquid in motion to generate damping. The viscous damper used on the bridge is generally installed between the bridge and the abutment. The damper does not function normally; when large braking force, wind power or earthquake force occurs, the bridge generates large displacement, the viscous damper plays a role, the input energy is dissipated, and the safety of the bridge structure is protected.
The viscous damper in the prior art does not have rigidity, can enhance the anti-seismic and anti-wind capability of a bridge structure by adopting the viscous damper, and can effectively prevent rare earthquakes and strong wind by taking the viscous damper as a passive protection system of the structure. But because the device is displaced by a small or substantially static amount over a long period of time, it has certain application limits: firstly, the rigidity of the viscous damper in the prior art is very small, when the viscous damper bears the load, the two ends of the damper can generate relative displacement, the device can not realize self-resetting, the displacement allowance of the viscous damper is compressed, the full play of the functions of the viscous damper is not facilitated, and the service life of the viscous damper is shortened. Secondly, hysteresis exists, the output force of the common damper can not be synchronous with the external input when the common damper is started, and small external disturbance displacement can not be restrained.
For a bridge system provided with fixed piers, the viscous damper is required not to generate relative displacement when bearing conventional loads such as wind load, temperature load, small earthquake and the like, and only plays a role under the working conditions of strong wind and strong earthquake, and the damping and the energy consumption are required. Obviously, the conventional viscous damper cannot meet the use requirement, and a limiting device is required to be arranged on the fixed pier to limit the displacement of the support under the action of the load in common use; under the action of earthquake load, the limiting device is damaged, and the viscous damper enters a working state to play the roles of damping and energy consumption. The limiting device in the seismic isolation and reduction arrangement mode can be used only once, needs to be replaced completely after the seismic isolation and reduction arrangement mode, is poor in economic benefit, and cannot be automatically reset after the seismic isolation and reduction arrangement mode is adopted.
For a full-drifting railway cable-stayed bridge system, the borne train load has a great influence on the power of the cable-stayed bridge, particularly the brake force. In order to solve the problem of dual control of brake load and earthquake load in a full-excursion railway cable-stayed bridge system, a dual-use damper scheme is adopted in the design of the conventional highway-railway dual-purpose cable-stayed bridge, namely a plurality of small-tonnage magneto-rheological dampers and a plurality of large-tonnage viscous dampers are matched for use, wherein the magneto-rheological dampers are used for limiting small vibration caused by the brake load of a vehicle, and the large-tonnage viscous dampers are used for controlling the displacement response of a main bridge caused by the earthquake load. Although the application of the structure vibration control technology can effectively improve or adjust the dynamic characteristics or dynamic action of the structure and ensure the safety of the structure and all accessories in the structure, when an earthquake occurs, the magnetorheological damper is firstly damaged and quits the work, and the brand new magnetorheological damper needs to be completely replaced after the earthquake, so that the defects of large repair engineering amount and high maintenance cost after the earthquake exist and the device cannot be automatically reset after the earthquake occurs.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a prestressing force damping spring, its long service life, it is effectual to consume energy the shock attenuation.
The embodiment of the utility model provides a technical scheme:
the prestressed damping spring comprises a sleeve and two damping spring assemblies arranged in the sleeve, wherein the two damping spring assemblies are symmetrically arranged relative to the contact surface of the sleeve and the two damping spring assemblies;
the damping spring assembly comprises an oil cylinder, a pull rod, a guide cover, a liquid spring, an end cover, a piston rod, a piston head and a damping medium; the one end of pull rod stretches into the hydro-cylinder, and connect in one side of direction lid, the direction lid slides and sets up in the hydro-cylinder, the opposite side of direction lid is connected the one end of piston rod, the other end of piston rod is connected the piston head, the piston head slides and sets up in the hydro-cylinder, the intercommunication has been seted up to the piston head the water conservancy diversion hole of piston head both sides, damping medium fills in the space of piston head both sides, the end cover sets up the direction lid with between the piston head, and the cover is established on the piston rod, the end cover is fixed to be set up in the hydro-cylinder, liquid spring fills the direction lid with in the space between the end cover.
Furthermore, the prestressed damping spring further comprises a flange, and the flange is connected to one end, extending out of the oil cylinder, of the pull rod.
Further, the prestressed damping spring further comprises a sliding plate which is connected to one side of the flange, which is far away from the pull rod.
Further, the end cover comprises a front end cover and a rear end cover which are connected with each other, and the front end cover is close to the guide cover relative to the rear end cover.
Furthermore, a first static seal assembly is arranged between the outer peripheral surface of the front end cover and the inner peripheral surface of the oil cylinder, and a second static seal assembly is arranged between the outer peripheral surface of the rear end cover and the inner peripheral surface of the oil cylinder.
Further, a first sliding seal assembly is arranged between the outer peripheral surface of the guide cover and the inner peripheral surface of the oil cylinder.
Furthermore, a second sliding seal assembly is arranged between the outer peripheral surface of the piston head and the inner peripheral surface of the oil cylinder, a third sliding seal assembly is arranged between the outer peripheral surface of the piston rod and the inner peripheral surface of the front end cover, and a fourth sliding seal assembly is arranged between the outer peripheral surface of the piston rod and the inner peripheral surface of the rear end cover.
Further, the oil cylinder comprises a sealing cover and a cylinder body, the cylinder body is barrel-shaped, the sealing cover is connected to an opening of the cylinder body, and the pull rod penetrates through the sealing cover.
Further, the outer peripheral surface of the sealing cover is provided with an external thread, the inner peripheral surface of the cylinder body is provided with an internal thread, and the external thread is matched with the internal thread.
Furthermore, the sleeve is used for being connected with the bridge body, and the sliding plate is used for being in clearance fit with the embedded assembly of the bridge pier;
or the sliding plate is used for connecting the bridge body, and the sleeve is used for connecting the bridge pier.
The embodiment of the utility model provides a prestressing force damping spring's beneficial effect is:
the prestressed damping spring is installed between a bridge body and a bridge pier, under the normal operation condition of the bridge, the horizontal load transmitted to the prestressed damping spring by the structure is smaller than the pre-tightening force F0 of the internally arranged hydraulic spring, and the prestressed damping spring is in a rigid-elastic state and can provide enough axial rigidity for a structure so as to meet the requirement of normal use.
When an earthquake occurs, large relative displacement occurs between a bridge body and a pier, large horizontal load is generated, namely the horizontal load F is larger than F0, the prestressed damping spring is pushed to move towards one side, the hydraulic spring on the extruded side generates reaction force F1 which is KX, meanwhile, damping media move from a high-pressure chamber to a low-pressure chamber in a high-speed and high-pressure state, damping force F2 which is CV α is generated by the viscous characteristic of the damping media in movement, a large amount of earthquake energy input to the structure is consumed, the structure is protected, after the earthquake is ended, the external acting force applied to the prestressed damping spring is gradually reduced until the damping media and the liquid springs in the chambers on the two sides reach balance, and the prestressed damping spring gradually drives the bridge structure to return to the initial position.
The prestressed damping spring realizes the flexible switching of providing the axial stiffness under the conventional working condition and the damping and energy consumption under the earthquake working condition by connecting the hydraulic spring which applies the pretightening force in advance with the viscous damper in parallel, and realizes the separation of the temperature displacement and the earthquake displacement. Meanwhile, the prestressed damping spring can provide larger damping during earthquake, and the seismic isolation and reduction effect is effectively improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural view of a prestressed damping spring according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of the state that the external acting force F of the prestressed damping spring is smaller than the pretightening force F0.
Fig. 3 is a schematic view of the prestressed damping spring in a state that the external acting force F is greater than the pretightening force F0.
Icon: 1-a prestressed damping spring; 2-a sleeve; 3-a sliding plate; 4-a flange; 5-oil cylinder; 51-sealing cover; 52-cylinder body; 6-a pull rod; 7-a guide cover; 8-a liquid spring; 9-front end cover; 10-rear end cap; 11-a piston rod; 12-a piston head; 13-a damping medium; 14-a first static seal assembly; 15-a second static seal assembly; 16-a first sliding seal assembly; 17-a second sliding seal assembly; 18-a third sliding seal assembly; 19-fourth sliding seal assembly.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally placed when the products of the present invention are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, and are merely for convenience of description of the present invention and for simplicity of description, and do not indicate or imply that the equipment or components that are referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The embodiment provides the prestressed damping spring which is long in service life, good in energy consumption and shock absorption effect and capable of automatically resetting after a shock.
Referring to fig. 1, a prestressed damping spring 1 includes a sleeve 2 and two damping spring assemblies disposed in the sleeve 2, wherein the two damping spring assemblies are symmetrically disposed with respect to a contact surface of the sleeve 2. When the prestressed damping spring 1 bears horizontal load, the two ends can realize respective axial displacement without influencing the working state of each other.
The damping spring assembly comprises a sliding plate 3, a flange 4, an oil cylinder 5, a pull rod 6, a guide cover 7, a liquid spring 8, an end cover, a piston rod 11, a piston head 12 and a damping medium 13.
The oil cylinder 5 comprises a sealing cover 51 and a cylinder body 52, the cylinder body 52 is barrel-shaped, the sealing cover 51 is connected to an opening of the cylinder body 52, an external thread is arranged on the outer peripheral surface of the sealing cover 51, an internal thread is arranged on the inner peripheral surface of the cylinder body 52, and the external thread is matched with the internal thread.
One end sealing cover 51 of the pull rod 6 penetrates into the oil cylinder 5 and is connected to one side of the guide cover 7. The flange 4 is connected with one end of the pull rod 6 extending out of the oil cylinder 5. The slide plate 3 is attached to the flange 4 on the side remote from the tie rod 6.
The guide cover 7 is arranged in the oil cylinder 5 in a sliding mode, the other side of the guide cover 7 is connected with one end of the piston rod 11, the other end of the piston rod 11 is connected with the piston head 12, the piston head 12 is arranged in the oil cylinder 5 in a sliding mode, and the piston head 12 is provided with guide holes communicated with the two sides of the piston head 12.
The damping medium 13 is filled in the spaces on both sides of the piston head 12, and the spaces on both sides have a certain intensity of internal pressure. The end cover is arranged between the guide cover 7 and the piston head 12 and sleeved on the piston rod 11, the end cover is fixedly arranged in the oil cylinder 5, and the liquid spring 8 is filled in a space between the guide cover 7 and the end cover.
The end cover comprises a front end cover 9 and a rear end cover 10 which are connected with each other, and the front end cover 9 is close to the guide cover 7 relative to the rear end cover 10.
A first static seal assembly 14 is arranged between the outer circumferential surface of the front end cover 9 and the inner circumferential surface of the oil cylinder 5. And a second static seal assembly 15 is arranged between the outer peripheral surface of the rear end cover 10 and the inner peripheral surface of the oil cylinder 5. A third sliding seal assembly 18 is provided between the outer peripheral surface of the piston rod 11 and the inner peripheral surface of the front end cap 9, and a fourth sliding seal assembly 19 is provided between the outer peripheral surface of the piston rod 11 and the inner peripheral surface of the rear end cap 10.
A first sliding seal assembly 16 is arranged between the outer peripheral surface of the guide cover 7 and the inner peripheral surface of the oil cylinder 5, and the first sliding seal assembly 16 moves along with the guide cover 7. A second sliding seal assembly 17 is arranged between the outer circumferential surface of the piston head 12 and the inner circumferential surface of the oil cylinder 5, and the second sliding seal assembly 17 moves along with the piston head 12.
The prestressed damping spring 1 provided by the embodiment is installed between a bridge body and a pier, and has the following installation form: firstly, a sleeve 2 is connected with a bridge body through a bolt, a sliding plate 3 is in clearance fit with a pre-embedded component on a bridge pier, normal lateral displacement can be realized, and the axial horizontal movement of a prestressed damping spring 1 is restrained under a conventional working condition; secondly, connecting the sliding plate 3 with the bridge body, and connecting the sleeve 2 with the bridge pier; thirdly, two prestressed damping springs 1 are respectively and independently installed to provide the initial stiffness and the damping force of a single side; fourth, the sliding plate 3 is connected to a pier by a pin or the like, and the sleeve 2 is connected to a bridge. The installation form of the prestressed damping spring 1 is not limited to the four types, and other reasonable installation forms can be provided in practical application.
The working principle of the prestressed damping spring 1 provided by the embodiment is as follows:
the hydraulic spring in the prestressed damping spring 1 has a pretightening force F0, the pretightening force F0 is larger than the temperature force of the bridge after thermal expansion and cold contraction, the train braking force, the wind power and the like, and meanwhile, the pretightening force F0 is smaller than the seismic force. Referring to fig. 2, when the horizontal load F transmitted from the outside to the pre-stressed damping spring 1 is smaller than the pre-tightening force F0, that is, the pre-stressed damping spring 1 is in a rigid elastic state under the normal operation state of the bridge.
Referring to fig. 3, when the horizontal load F transmitted from the outside to the pre-stressed damping spring 1 is greater than the pre-tightening force F0, that is, when an earthquake occurs, the pre-stressed damping spring 1 is subjected to a large horizontal load F to push the pre-stressed damping spring 1 to move to one side, and the hydraulic spring on the squeezed side generates a reaction force F1 ═ KX; meanwhile, the damping medium 13 moves from the high-pressure chamber to the low-pressure chamber at a high speed and a high pressure, and the damping force F2 is generated by the viscous characteristic of the damping medium 13 in the movementαAt the moment, the resultant reaction force of the prestressed damping spring 1 is F3 ═ F0+ F1+ F2, the damping and energy dissipation performance of the prestressed damping spring is greatly improved on the basis of the existing viscous damper, so that a large amount of seismic energy of an input structure is consumed, and a main body of the structure is protected; after the earthquake is ended, the external acting force borne by the prestressed damping spring 1 is gradually reduced until the pressure of the damping medium 13 in the chambers on the two sides and the stress of the hydraulic spring are balanced, and the prestressed damping spring 1 gradually drives the bridge structure to return to the initial position.
The beneficial effects of the prestressed damping spring 1 provided by the embodiment are as follows:
the prestressed damping spring 1 is installed between a bridge body and a bridge pier, under the normal operation condition of the bridge, the horizontal load transmitted to the prestressed damping spring 1 by the structure is smaller than the pretightening force F0 of the internally arranged hydraulic spring, and the prestressed damping spring 1 is in a rigid elastic state and can provide enough axial rigidity for a structure to meet the requirement of normal use.
When an earthquake occurs, large relative displacement occurs between a bridge body and a pier, large horizontal load is generated, namely the horizontal load F is larger than F0, the prestressed damping spring 1 is pushed to move towards one side, the hydraulic spring on the extruded side generates reaction force F1 which is KX, meanwhile, the damping medium 13 moves from a high-pressure chamber to a low-pressure chamber in a high-speed and high-pressure state, the damping force F2 which is CV α is generated by the viscous characteristic of the damping medium 13 in the movement, the earthquake energy input into the structure is greatly consumed, the structure is protected, and after the earthquake is ended, the prestressed damping spring 1 gradually drives the bridge structure to restore to the initial position.
The prestressed damping spring 1 is formed by connecting a hydraulic spring which applies pretightening force in advance with a viscous damper in parallel, so that the flexible switching of two functions of providing axial rigidity under the conventional working condition and damping and energy consumption under the earthquake working condition is realized, and the separation of temperature displacement and earthquake displacement is realized. Meanwhile, the prestressed damping spring 1 can provide larger damping during earthquake, and the seismic isolation and reduction effect is effectively improved.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A pre-stressed damping spring is characterized by comprising a sleeve (2) and two damping spring components arranged in the sleeve (2), wherein the two damping spring components are symmetrically arranged relative to the contact surface of the two damping spring components;
the damping spring assembly comprises an oil cylinder (5), a pull rod (6), a guide cover (7), a liquid spring (8), an end cover, a piston rod (11), a piston head (12) and a damping medium (13); one end of the pull rod (6) extends into the oil cylinder (5) and is connected with one side of the guide cover (7), the guide cover (7) is arranged in the oil cylinder (5) in a sliding way, the other side of the guide cover (7) is connected with one end of the piston rod (11), the other end of the piston rod (11) is connected with the piston head (12), the piston head (12) is arranged in the oil cylinder (5) in a sliding way, the piston head (12) is provided with flow guide holes communicated with the two sides of the piston head (12), the damping medium (13) is filled in the space on both sides of the piston head (12), the end cover is arranged between the guide cover (7) and the piston head (12) and sleeved on the piston rod (11), the end cover is fixedly arranged in the oil cylinder (5), and the liquid spring (8) is filled in a space between the guide cover (7) and the end cover.
2. The pre-stressed damping spring according to claim 1, further comprising a flange (4), wherein the flange (4) is connected to an end of the pull rod (6) extending out of the cylinder (5).
3. The pre-stressed damping spring according to claim 2, characterized in that it further comprises a sliding plate (3), the sliding plate (3) being connected on the side of the flange (4) remote from the tie rod (6).
4. The pre-stressed damping spring according to claim 1, wherein the end cap comprises a front end cap (9) and a rear end cap (10) connected to each other, the front end cap (9) being close to the guide cap (7) with respect to the rear end cap (10).
5. The pre-stressed damping spring according to claim 4, wherein a first static seal assembly (14) is arranged between the outer circumferential surface of the front end cover (9) and the inner circumferential surface of the oil cylinder (5), and a second static seal assembly (15) is arranged between the outer circumferential surface of the rear end cover (10) and the inner circumferential surface of the oil cylinder (5).
6. The pre-stressed damping spring according to claim 1, wherein a first sliding seal assembly (16) is provided between the outer circumferential surface of the guide cover (7) and the inner circumferential surface of the cylinder (5).
7. The pre-stressed damping spring according to claim 4, wherein a second sliding seal assembly (17) is provided between the outer circumferential surface of the piston head (12) and the inner circumferential surface of the cylinder (5), a third sliding seal assembly (18) is provided between the outer circumferential surface of the piston rod (11) and the inner circumferential surface of the front end cap (9), and a fourth sliding seal assembly (19) is provided between the outer circumferential surface of the piston rod (11) and the inner circumferential surface of the rear end cap (10).
8. The pre-stressed damping spring according to claim 1, wherein the oil cylinder (5) comprises a cover (51) and a cylinder body (52), the cylinder body (52) is barrel-shaped, the cover (51) is connected to an opening of the cylinder body (52), and the pull rod (6) penetrates through the cover (51).
9. The pre-stressed damping spring according to claim 8, wherein the outer circumferential surface of the cap (51) is provided with an external thread, and the inner circumferential surface of the cylinder (52) is provided with an internal thread, the external thread being engaged with the internal thread.
10. The pre-stressed damping spring according to claim 3, wherein the sleeve (2) is used for connecting with a bridge body, and the sliding plate (3) is used for clearance fit with a pre-embedded component of a bridge pier;
or the sliding plate (3) is used for connecting a bridge body, and the sleeve (2) is used for connecting a pier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920979036.7U CN210290579U (en) | 2019-06-26 | 2019-06-26 | Prestressed damping spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920979036.7U CN210290579U (en) | 2019-06-26 | 2019-06-26 | Prestressed damping spring |
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| Publication Number | Publication Date |
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| CN210290579U true CN210290579U (en) | 2020-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920979036.7U Withdrawn - After Issue CN210290579U (en) | 2019-06-26 | 2019-06-26 | Prestressed damping spring |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110173533A (en) * | 2019-06-26 | 2019-08-27 | 成都亚佳工程新技术开发有限公司 | Prestressing force damping spring |
| CN110173533B (en) * | 2019-06-26 | 2024-04-19 | 成都亚佳工程新技术开发有限公司 | Prestress damping spring |
-
2019
- 2019-06-26 CN CN201920979036.7U patent/CN210290579U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110173533A (en) * | 2019-06-26 | 2019-08-27 | 成都亚佳工程新技术开发有限公司 | Prestressing force damping spring |
| CN110173533B (en) * | 2019-06-26 | 2024-04-19 | 成都亚佳工程新技术开发有限公司 | Prestress damping spring |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20200410 Effective date of abandoning: 20240419 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20200410 Effective date of abandoning: 20240419 |