CN112682452A - Built-in locking type multifunctional adjustable damper and bridge structure - Google Patents
Built-in locking type multifunctional adjustable damper and bridge structure Download PDFInfo
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- CN112682452A CN112682452A CN202011482974.XA CN202011482974A CN112682452A CN 112682452 A CN112682452 A CN 112682452A CN 202011482974 A CN202011482974 A CN 202011482974A CN 112682452 A CN112682452 A CN 112682452A
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Abstract
The invention relates to a built-in locking type multifunctional adjustable damper and a bridge structure, comprising: the damping piston and the damping liquid are arranged in the cylinder body; one end of the piston rod extends into the cylinder body and is fixed with the damping piston; and the locking fastener is arranged in the cylinder body, and the cylinder body and the piston rod are locked or unlocked by controlling the locking fastener to be in contact with or separated from the piston rod. The built-in locking type multifunctional adjustable damper and the bridge structure have the advantages that the built-in locking type multifunctional adjustable damper can be used in various states of a bridge, the bridge is not required to be dismantled after being built, the permanent temporary combination effect is achieved, the temporary tower beam consolidation device resources in the construction process of a cable-stayed bridge are saved, the construction processes and links are reduced, the engineering progress is accelerated, the construction centralized control operation is facilitated, the construction quality and safety are ensured, and the anti-seismic function of the bridge in a bridge forming state is enhanced.
Description
Technical Field
The invention relates to the technical field of bridges, in particular to a built-in locking type multifunctional adjustable damper and a bridge structure.
Background
The cable-stayed bridge is a bridge with a compressed bridge deck system and a tensioned support system, and the structure of the support system consists of stay cables. Although the construction of the cable-stayed bridge in China starts late, the development is fast, the cable-stayed bridge built in 1993 Shanghai Yanpu double-tower space double-cable-surface steel-concrete combined beam keeps the world leading for 6 years by using 602m main span record, and the cable-stayed bridge built in 2008 Sutong Changjiang bridge keeps the world leading to the present by using 1088m main span record. Although the cable-stayed bridge has large spanning capacity, the construction difficulty is also large, and the construction risk and the use risk of the cable-stayed bridge are also large. The displacement, torsion, even collapse, and vibration damage of the large-span bridge structure are one of the main risks of the large-span cable-stayed bridge.
The large-span cable-stayed bridge is generally designed into a floating and semi-floating system, the construction of the large-span cable-stayed bridge generally adopts a cantilever pouring or cantilever assembling method, and the construction of the cable-stayed bridge in the cantilever construction of the cable-stayed bridge generally adopts a tower-beam consolidation mode before closure so as to enhance the stability of a cantilever structure in the construction.
In the related technology, the tower-beam temporary consolidation needs to consolidate the longitudinal direction, the transverse direction and the corner, the construction method is that firstly, steel bars and steel plates or bolts or prestressed connecting pieces are pre-embedded at the temporary consolidation points of the tower and the beam, a support and a cushion stone are arranged at the consolidation points of the tower, a support base plate or an ear plate is arranged at the consolidation points of the beam, and the temporary consolidation mode can adopt sulfur concrete consolidation, high-strength steel bar consolidation, welded steel plate consolidation and the like through the pre-embedded steel bars (or prestressed bars).
However, in this consolidation mode, after the girder is closed, the temporary consolidation pieces (such as temporary consolidation steel bars or prestressed bars, sulfur concrete, etc.) need to be removed to realize the conversion of the bridge structure system; however, the temporary consolidation device in the construction process of the cable-stayed bridge is only used in the construction stage, and certain resource waste exists.
Disclosure of Invention
The embodiment of the invention provides a built-in locking type multifunctional adjustable damper and a bridge structure, and aims to solve the problem that in the related art, a bridge temporary consolidation device is only used in a construction stage, and after a girder is closed, the temporary consolidation device is removed and is wasted, and resources are wasted.
In a first aspect, there is provided a built-in locking type multifunctional adjustable damper, comprising: the damping piston and the damping liquid are arranged in the cylinder body; one end of the piston rod extends into the cylinder body and is fixed with the damping piston; and the locking fastener is arranged in the cylinder body, and the cylinder body and the piston rod are locked or unlocked by controlling the locking fastener to be in contact with or separated from the piston rod.
In some embodiments, the locking fastener comprises a first fastener and a second fastener located on opposite sides of the piston rod, and the first fastener and the second fastener each have a circular arc shape matching the shape of the outer contour of the piston rod.
In some embodiments, the built-in locking type multifunctional adjustable damper further comprises a locking piston mounted on the cylinder body, and the locking piston can move towards or away from the piston rod relative to the cylinder body; the locking fastener is fixed on the inner side of the locking piston and can move along with the locking piston.
In some embodiments, the locking piston comprises: the main body is arranged on the cylinder body in a penetrating way; and the head part is connected to the main body, the head part is positioned on the inner side of the cylinder body, the inner surface of the head part is attached to the locking fastener, and the outer surface of the head part is matched with the shape of the inner wall surface of the cylinder body.
In some embodiments, a sealing cylinder is disposed at a position of the cylinder body corresponding to the locking piston, and hydraulic oil is pressed into the sealing cylinder to push the locking device to move in a direction close to the piston rod.
In some embodiments, the sealing cylinder is disposed outside the cylinder body; the locking piston passes out of the cylinder body and into the sealing cylinder.
In some embodiments, a return spring is installed on the locking piston, and when the hydraulic oil in the sealing cylinder is discharged, the locking piston is reset through the return spring.
In some embodiments, a locking screw is fixed on the outer side of the locking piston, and the locking piston is pushed to move by the locking screw.
In some embodiments, a fixed cylinder is fixed to the cylinder body corresponding to the locking piston, the fixed cylinder has an internal threaded hole matched with the locking screw, and the locking screw passes through the internal threaded hole and is fixed to the locking piston.
In a second aspect, there is provided a bridge construction comprising: a beam body; and the built-in locking type multifunctional adjustable damper is arranged on the beam body.
The technical scheme provided by the invention has the beneficial effects that:
the embodiment of the invention provides a built-in locking type multifunctional adjustable damper and a bridge structure, wherein a locking fastener is arranged in a cylinder body, and the locking fastener can be controlled to be in contact with a piston rod in the construction process of a bridge body, so that the piston rod is locked by the locking fastener through friction force, the movement of the piston rod is limited, the locking state of the piston rod and the cylinder body is achieved, the longitudinal and transverse movement and rotation of a bridge in construction are prevented, and the construction is facilitated; after the beam body is closed, the locking fastener is controlled to be separated from the piston rod, the piston rod can move in the cylinder body, the piston rod and the cylinder body are unlocked, when earthquake or wind-induced earthquake occurs, vibration force is transmitted to the damper, the piston rod is pushed under the action force of the earthquake or wind-induced earthquake, the damping piston moves along with the piston rod, meanwhile, the damping piston slides to enable pressure difference to occur between damping liquid on two sides of the damping piston, and then damping force is generated, vibration energy input by the earthquake and the wind-induced earthquake can be dissipated, and the influence of earthquake response on the bridge structure is reduced; therefore, the built-in locking type multifunctional adjustable damper can be used in various states of a bridge, the bridge does not need to be dismantled after being built, the temporary tower beam consolidation device resources in the construction process of the cable-stayed bridge are saved, the construction procedures and links are reduced, the engineering progress is accelerated, the construction centralized control operation is convenient, the construction quality and safety are ensured, and the anti-seismic function of the bridge in a bridge forming state is enhanced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a built-in locking type multifunctional adjustable damper according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a built-in locking type multifunctional adjustable damper provided by an embodiment of the invention;
FIG. 3 is a schematic cross-sectional view A-A of FIG. 2;
FIG. 4 is a schematic structural diagram of another built-in locking type multifunctional adjustable damper provided by the embodiment of the invention;
FIG. 5 is a schematic cross-sectional view of another internally locked multi-function adjustable damper according to an embodiment of the present invention;
fig. 6 is a schematic cross-sectional view of B-B in fig. 5.
In the figure:
1. a cylinder body; 11. an inner cavity; 12. a damping piston; 13. a left ear panel;
2. a piston rod; 21. a right ear plate;
3. a locking fastener; 31. a first fastener; 32. a second fastener;
4. a locking piston; 41. a main body; 42. a head portion; 43. a first locking piston; 44. a second locking piston;
5. sealing the cylinder; 51. an inlet; 52. an outlet;
6. a return spring;
7. locking the screw rod;
8. a fixed cylinder; 81. and (4) an internal threaded hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the 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. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The embodiment of the invention provides a built-in locking type multifunctional adjustable damper and a bridge structure, which can solve the problem that in the related art, a bridge temporary consolidation device is only used in a construction stage, and after a girder is closed, the temporary consolidation device is removed and is wasted, and resources are wasted.
Referring to fig. 2 and 5, in an actual use of the built-in locking type multifunctional adjustable damper provided in the embodiments of the present invention, one end of the built-in locking type multifunctional adjustable damper may be fixed to a pier, and the other end of the built-in locking type multifunctional adjustable damper may be fixed to a beam, and the built-in locking type multifunctional adjustable damper may include: the damping cylinder comprises a cylinder body 1, wherein an inner cavity 11 can be formed in the cylinder body 1, the inner cavity 11 can be filled with damping liquid, a damping piston 12 is arranged in the inner cavity 11, and the damping piston 12 is provided with a small hole which penetrates through the front and the back and is used for the damping liquid to pass through; a piston rod 2, one end of which extends into the cylinder 1 and is fixed with the damping piston 12; the locking fastener 3 arranged in the cylinder body 1 can lock the cylinder body 1 and the piston rod 2 by controlling the locking fastener 3 to be in contact with the piston rod 2, and can unlock the cylinder body 1 and the piston rod 2 by controlling the locking fastener 3 to be separated from the piston rod 2; after the cylinder body 1 and the piston rod 2 are locked, the cylinder body 1 and the piston rod 2 cannot move relatively, so that the longitudinal and transverse movement and rotation of a bridge in construction can be prevented, and the construction is facilitated; after the cylinder body 1 and the piston rod 2 are unlocked, the cylinder body 1 and the piston rod 2 can move relatively, and the damping force generated by the damping liquid in the cylinder body 1 can gradually consume the vibration energy input by earthquake and wind earthquake, so that the influence of earthquake response on a bridge structure is reduced.
Referring to fig. 2 and 3, in some embodiments, the locking fastener 3 may include a first fastener 31 and a second fastener 32 located on opposite sides of the piston rod 2, each of the first fastener 31 and the second fastener 32 may have a circular arc shape matching the outer contour of the piston rod 2, specifically, the piston rod 2 may be a cylinder such that the outer contour thereof is circular, and inner surfaces of the first fastener 31 and the second fastener 32 are designed to have a circular arc shape with the same radius as that of the piston rod 2 so as to better fit with the piston rod 2 and to clamp the piston rod 2 together to lock the piston rod 2 against relative movement with the cylinder 1; in other embodiments, when the piston rod 2 is a non-cylindrical body, the first fastening member 31 and the second fastening member 32 may also be designed to have a shape corresponding to the piston rod 2.
Referring to fig. 2 and 5, preferably, the first fastening member 31 and the second fastening member 32 may be symmetrically disposed about the axis of the piston rod 2, that is, the first fastening member 31 and the second fastening member 32 are disposed opposite to each other, so that the piston rod 2 is not easily tilted when being clamped by the first fastening member 31 and the second fastening member 32, and the piston rod 2 can be stably clamped.
Referring to fig. 3 and 6, in some embodiments, the built-in locking type multifunctional adjustable damper may further include a locking piston 4 mounted on the cylinder 1, and the locking piston 4 may move in a direction approaching or moving away from the piston rod 2 with respect to the cylinder 1; the locking fastener 3 can be fixed on the inner side of the locking piston 4 and can move along with the locking piston 4, and due to the arrangement of the locking piston 4, the locking fastener 3 can be designed into a sheet shape and attached to the inner side of the locking piston 4, so that the locking fastener 3 can move by directly driving the locking piston 4, and the material of the locking fastener 3 is saved.
Referring to fig. 3 and 6, in some alternative embodiments, the locking piston 4 may include: the main body 41, the main body 41 can be worn on the cylinder body 1, specifically, the cylinder body 1 can be provided with a through hole penetrating through the inner surface and the outer surface of the cylinder body, the main body 41 is worn on the through hole and can move along the axis of the through hole; and a head 42 connected to the main body 41, wherein the head 42 may be located inside the cylinder 1, and an inner surface of the head 42 is attached to the locking fastener 3 so that the locking fastener 3 contacts the piston rod 2, and an outer surface of the head 42 may match the shape of the inner wall surface of the cylinder 1.
Referring to fig. 1 to 3, in some embodiments, a sealing cylinder 5 may be disposed at a position of the cylinder body 1 corresponding to the locking piston 4, the sealing cylinder 5 may be provided with an inlet 51 and an outlet 52, and hydraulic oil may be pressed into the sealing cylinder 5 through the inlet 51, so that the hydraulic oil can push the locking device to move toward a direction close to the piston rod 2, and further, the locking fastener 3 is made to cling to the piston rod 2; the hydraulic oil in the sealing cylinder 5 can be discharged through the outlet 52.
Referring to fig. 3, in some alternative embodiments, the sealing cylinder 5 may be disposed outside the cylinder body 1 to avoid occupying more space in the cylinder body 1 and interfering with the movement of the piston rod 2; the locking piston 4 can pass through the cylinder body 1 from the cylinder body 1 and enter the sealing cylinder 5, and after the pressure in the sealing cylinder 5 is increased, the locking piston 4 can be pushed to move under the action of the pressure.
Referring to fig. 2 and 3, a return spring 6 may be mounted on the locking piston 4, in this embodiment, a first locking piston 43 is provided corresponding to the first fastening member 31, a second locking piston 44 is provided corresponding to the second fastening member 32, a return spring 6 connects the first locking piston 43 and the second locking piston 44, when the hydraulic oil in the seal cylinder 5 is discharged, the pressure in the seal cylinder 5 is reduced, the first locking piston 43 and the second locking piston 44 are reset together with the first fastening member 31 and the second fastening member 32 under the action of the return spring 6, and after the first locking piston 43 and the second locking piston 44 are reset, a gap is formed between the first fastening member 31 and the piston rod 2, and a gap is also formed between the head 42 of the first locking piston 43 and the inner surface of the cylinder 1, meanwhile, there is a gap between the second fastening member 32 and the piston rod 2, and a gap between the head 42 of the second locking piston 44 and the inner surface of the cylinder 1.
Referring to fig. 4 to 5, in some embodiments, a locking screw 7 may be fixed on an outer side of the locking piston 4, and the locking screw 7 may be rotated to push the locking piston 4 to move, specifically, when the locking piston 4 needs to be moved in a direction approaching the piston rod 2, the locking screw 7 may be rotated clockwise, and when the locking piston 4 needs to be moved in a direction away from the piston rod 2, the locking screw 7 may be rotated counterclockwise, which is convenient for operation.
Referring to fig. 5 and 6, in some alternative embodiments, a fixed cylinder 8 may be fixedly disposed at a position of the cylinder body 1 corresponding to the locking piston 4, in this embodiment, the fixed cylinder 8 is integrally disposed with the cylinder body 1, in other embodiments, the fixed cylinder 8 may also be separately disposed from the cylinder body 1 and then fixed to the cylinder body 1 by bolts or welding, and the like, the outer surface of the locking screw 7 has external threads, the fixed cylinder 8 has an internal thread hole 81 matched with the external threads of the locking screw 7, and the locking screw 7 may be fixed to the locking piston 4 through the internal thread hole 81, and by providing the fixed cylinder 8, when the locking screw 7 is rotated, the locking screw 7 may be moved relative to the cylinder body 1.
An embodiment of the present invention further provides a bridge structure, which may include: the bridge comprises a beam body, wherein a bridge pier can be supported below the beam body; and the above built-in locking type multifunctional adjustable damper, wherein the cylinder body 1 may have a left lug plate 13 so that the cylinder body 1 may be fixed to a pier through the left lug plate 13, and the piston rod 2 may have a right lug plate 21 so that the piston rod 2 may be fixed to a girder through the right lug plate 21; a built-in locking type multifunctional adjustable damper is arranged between a beam body and a pier, a piston rod 2 can be locked through a locking fastener 3, and the movement of the piston rod 2 is limited, so that the state that the piston rod 2 and a cylinder body 1 are locked is achieved, the longitudinal and transverse movement and rotation of a bridge in construction are prevented, and the construction is facilitated; after the beam body is closed, the locking fastener 3 and the piston rod 2 can be unlocked, and the function of vibration reduction is realized.
The principle of the built-in locking type multifunctional adjustable damper and the bridge structure provided by the embodiment of the invention is as follows:
because the locking fastener 3 is arranged in the cylinder body 1, in the construction process of a bridge girder, the locking fastener 3 can be controlled to be in contact with the piston rod 2, so that the piston rod 2 is locked by the locking fastener 3 through friction force, the movement of the piston rod 2 is limited, the locking state of the piston rod 2 and the cylinder body 1 is achieved, the bridge in construction is prevented from moving and rotating longitudinally and transversely, and the construction is facilitated; after the beam body closes, the locking fastener 3 is controlled to be separated from the piston rod 2, the piston rod 2 can move in the cylinder body 1, the piston rod 2 and the cylinder body 1 are unlocked, when earthquake or wind-induced earthquake occurs, vibration force is transmitted to the damper, the piston rod 2 is pushed under the action force of the earthquake or wind-induced earthquake, the damping piston 12 moves along with the piston rod 2, meanwhile, the damping piston 12 slides to enable the damping liquid on the two sides of the damping piston to generate pressure difference, and then damping force is generated, the energy input by the earthquake and the wind-induced earthquake can be dissipated, and the influence of earthquake response on the bridge structure can be reduced; therefore, the built-in locking type multifunctional adjustable damper can be used in various states of a bridge, the bridge does not need to be dismantled after being built, the temporary tower beam consolidation device resources in the construction process of the cable-stayed bridge are saved, the construction procedures and links are reduced, the engineering progress is accelerated, the construction centralized control operation is convenient, the construction quality and safety are ensured, and the anti-seismic function of the bridge in a bridge forming state is enhanced.
In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; 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 meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
It is to be noted that, in the present invention, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A built-in locking type multifunctional adjustable damper is characterized by comprising:
the damping cylinder comprises a cylinder body (1), wherein a damping piston (12) and damping liquid are arranged in the cylinder body (1);
a piston rod (2), one end of which extends into the cylinder body (1) and is fixed with the damping piston (12);
and a locking fastener (3) arranged in the cylinder body (1) is used for controlling the locking fastener (3) to be in contact with or separated from the piston rod (2), so that the cylinder body (1) and the piston rod (2) are locked or unlocked.
2. The built-in locking type multifunctional adjustable damper as claimed in claim 1, wherein:
the locking fastener (3) comprises a first fastener (31) and a second fastener (32) which are positioned on two opposite sides of the piston rod (2), and the first fastener (31) and the second fastener (32) are both in a circular arc shape matched with the outer contour shape of the piston rod (2).
3. The built-in locking type multifunctional adjustable damper as claimed in claim 1, wherein:
the built-in locking type multifunctional adjustable damper further comprises a locking piston (4) arranged on the cylinder body (1), and the locking piston (4) can move towards or away from the piston rod (2) relative to the cylinder body (1);
the locking fastener (3) is fixed on the inner side of the locking piston (4) and can move along with the locking piston (4).
4. The built-in locking type multifunctional adjustable damper according to claim 3, wherein the locking piston (4) comprises:
a main body (41), wherein the main body (41) is arranged on the cylinder body (1) in a penetrating way;
and the head part (42) is connected to the main body (41), the head part (42) is positioned on the inner side of the cylinder body (1), the inner surface of the head part (42) is attached to the locking fastener (3), and the outer surface of the head part (42) is matched with the shape of the inner wall surface of the cylinder body (1).
5. The built-in locking type multifunctional adjustable damper as claimed in claim 3, wherein:
the cylinder body (1) is provided with a sealing cylinder (5) corresponding to the locking piston (4), and hydraulic oil is pressed into the sealing cylinder (5) to push the locking device to move towards the direction close to the piston rod (2).
6. The built-in locking type multifunctional adjustable damper as claimed in claim 5, wherein:
the sealing cylinder (5) is arranged on the outer side of the cylinder body (1);
the locking piston (4) passes out of the cylinder body (1) from the cylinder body (1) and enters the sealing cylinder (5).
7. The built-in locking type multifunctional adjustable damper as claimed in claim 5, wherein:
and a return spring (6) is installed on the locking piston (4), and when the hydraulic oil in the sealing cylinder (5) is discharged, the locking piston (4) is reset through the return spring (6).
8. The built-in locking type multifunctional adjustable damper as claimed in claim 3, wherein:
and a locking screw rod (7) is fixed on the outer side of the locking piston (4), and the locking piston (4) is pushed to move through the locking screw rod (7).
9. The built-in locking type multifunctional adjustable damper as claimed in claim 8, wherein:
a fixed cylinder (8) is fixedly arranged at the position of the cylinder body (1) corresponding to the locking piston (4), the fixed cylinder (8) is provided with an internal thread hole (81) matched with the locking screw rod (7),
the locking screw (7) penetrates through the internal thread hole (81) and is fixed with the locking piston (4).
10. A bridge construction, comprising:
a beam body;
and a built-in locking type multifunctional adjustable damper as recited in any one of claims 1 to 9, which is installed to the girder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011482974.XA CN112682452B (en) | 2020-12-15 | 2020-12-15 | Built-in locking type multifunctional adjustable damper and bridge structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011482974.XA CN112682452B (en) | 2020-12-15 | 2020-12-15 | Built-in locking type multifunctional adjustable damper and bridge structure |
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| CN112682452A true CN112682452A (en) | 2021-04-20 |
| CN112682452B CN112682452B (en) | 2022-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP2002130354A (en) * | 2000-10-23 | 2002-05-09 | Kayaba Ind Co Ltd | Front fork |
| CN102720124A (en) * | 2012-07-05 | 2012-10-10 | 大连理工大学 | Fluid viscous damper with working switch |
| CN107476182A (en) * | 2017-06-30 | 2017-12-15 | 湖北华舟重工应急装备股份有限公司 | A kind of two level springboard automatic turning mechanism with locking device |
| CN209722694U (en) * | 2019-01-15 | 2019-12-03 | 安徽省交通控股集团有限公司 | A kind of half-through viscous damper |
| CN211571370U (en) * | 2019-12-31 | 2020-09-25 | 山东百顿减震科技有限公司 | Speed locking device |
| CN111749120A (en) * | 2020-07-08 | 2020-10-09 | 中南大学 | Viscous damping system, bridge comprising same and bridge damping method |
| CN111853134A (en) * | 2019-04-25 | 2020-10-30 | 佛山市顺德海尔电器有限公司 | Damping shock absorber, washing machine with same and control method |
-
2020
- 2020-12-15 CN CN202011482974.XA patent/CN112682452B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002130354A (en) * | 2000-10-23 | 2002-05-09 | Kayaba Ind Co Ltd | Front fork |
| CN102720124A (en) * | 2012-07-05 | 2012-10-10 | 大连理工大学 | Fluid viscous damper with working switch |
| CN107476182A (en) * | 2017-06-30 | 2017-12-15 | 湖北华舟重工应急装备股份有限公司 | A kind of two level springboard automatic turning mechanism with locking device |
| CN209722694U (en) * | 2019-01-15 | 2019-12-03 | 安徽省交通控股集团有限公司 | A kind of half-through viscous damper |
| CN111853134A (en) * | 2019-04-25 | 2020-10-30 | 佛山市顺德海尔电器有限公司 | Damping shock absorber, washing machine with same and control method |
| CN211571370U (en) * | 2019-12-31 | 2020-09-25 | 山东百顿减震科技有限公司 | Speed locking device |
| CN111749120A (en) * | 2020-07-08 | 2020-10-09 | 中南大学 | Viscous damping system, bridge comprising same and bridge damping method |
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| Publication number | Publication date |
|---|---|
| CN112682452B (en) | 2022-03-18 |
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