Vibration reduction support

Abstract

According to the vibration reduction support, vibration on a bridge is transmitted to the conversion unit through the transmission unit, and vibration energy is converted, so that the influence of the vibration on a bridge body structure is reduced, and the comfort and safety of the bridge in use are improved. More specifically, viscous liquid is arranged in the viscous cylinder body, when vibration of a bridge is only transmitted to a lead screw nut of a conversion unit, the lead screw nut moves up and down to enable a damping lead screw to rotate along with the lead screw nut, a piston and the damping lead screw rotate synchronously, and vibration energy of the bridge is converted into rotation of the damping lead screw and the piston. Furthermore, due to the arrangement of the elastic unit, the rigidity value is increased, the vibration period of bridge vibration is prolonged, the displacement amount of the lead screw nut is reduced, and due to the arrangement of the hollow cylindrical cavity of the base, the displacement of vibration in the horizontal direction is reduced.

Description

Technical Field

[0001] The utility model relates to a vibration reduction bearing, in particular to a vibration reduction bearing used in bridge engineering. Background Art

[0002] The shock-absorbing effect of bridge bearings is an important guarantee for the normal operation and use of bridges. The environment and conditions of bridges are often complex and changeable. For example, the vibration of vehicles on the road, wind force, earthquakes, etc. will cause vibration and impact on the bridge structure, thus affecting its safety and stability. If the bridge bearings do not have a shock-absorbing effect, the stress of the bridge will be greatly affected, which may affect the driving comfort at the least, or even cause the collapse of the bridge structure, resulting in casualties and property losses. In order to avoid the impact of vibration on the comfort and safety of bridge use, it is necessary to install shock-absorbing devices on the bridge. Utility Model Content

[0003] In view of the above-mentioned deficiencies existing in the current bridge structure, the utility model provides a vibration-damping bearing, which can achieve the effect of shock-absorbing the bridge and make the bridge more comfortable and safer during use.

[0004] In order to achieve the above object, the embodiment of the utility model adopts the following technical solution:

[0005] A vibration-damping bearing, comprising:

[0006] A transmission unit, wherein the transmission unit has an axial height, and a vibration body and a conversion unit are respectively arranged on both sides of the axial height, and the vibration of the vibration body is transmitted to the conversion unit;

[0007] The conversion unit includes a screw nut, a damping screw arranged along the axial direction, a piston and a viscous cylinder, the screw nut is fixedly connected to the transmission unit, the damping screw is threadedly connected to the screw nut. The damping screw is fixedly connected to the piston at one end opposite to the screw nut, the piston is arranged in the viscous cylinder, and when the damping screw rotates, the piston rotates synchronously in the viscous cylinder.

[0008] Preferably, the vibration-damping support further comprises an elastic unit, and the elastic unit abuts against the transmission unit.

[0009] Preferably, the elastic unit is configured as one or a combination of disc springs, compression springs, and leaf springs.

[0010] Preferably, the transmission unit includes a top plate, a connecting plate, and a support rod arranged between the top plate and the connecting plate, the top plate is used to contact or connect with the vibration body, and the connecting plate is fixedly connected to the screw nut.

[0011] Preferably, the conversion unit further comprises a thrust ball bearing, and the thrust ball bearing is arranged in the viscous cylinder and at a position corresponding to the damping screw.

[0012] Preferably, the thrust ball bearings are provided in two numbers, which are respectively arranged at the upper part and the lower part of the fixed connection between the piston and the damping screw rod.

[0013] Preferably, the conversion unit further includes a base, which includes a bottom plate and a hollow cylindrical cavity arranged at the center of the bottom plate, the rotation axis of the damping screw is an extension of the center line of the hollow cylindrical cavity, and the bottom of the viscous cylinder is the bottom plate.

[0014] Preferably, the elastic unit is arranged in the hollow cylindrical cavity.

[0015] Preferably, the piston has blades arranged in the radial direction, and the number of the piston blades is set to any number between 2-8.

[0016] Preferably, the piston blade is provided with a through hole.

[0017] Advantages of the implementation of the utility model: The utility model provides a vibration-damping bearing, which transmits the vibration on the bridge to the conversion unit through the transmission unit, converts the vibration energy, thereby reducing the impact of the vibration on the main structure of the bridge and increasing the comfort and safety of the bridge when in use. More specifically, a viscous liquid is arranged in the viscous cylinder. When the vibration of the bridge is transmitted to the screw nut of the conversion unit, the up and down movement of the screw nut causes the damping screw to rotate accordingly, and the piston and the damping screw rotate synchronously, converting the vibration energy of the bridge into the rotation of the damping screw and the piston. Furthermore, the setting of the elastic unit increases the stiffness value, prolongs the vibration period of the bridge vibration, and reduces the displacement of the screw nut. The setting of the hollow cylindrical cavity in the base reduces the displacement of the vibration in the horizontal direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 This is a schematic diagram of the overall structure of a vibration-damping support according to an embodiment of the utility model;

[0020] Figure 2 It is a structural schematic diagram of a transmission unit of a vibration-damping support according to an embodiment of the utility model;

[0021] Figure 3 It is a structural schematic diagram of a conversion unit of a vibration-damping support according to an embodiment of the utility model;

[0022] Figure 4 The present invention is a schematic structural diagram of a damping screw and a piston of a vibration-damping support according to an embodiment of the present utility model. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a vibration-damping support comprises:

[0025] A transmission unit, wherein the transmission unit has an axial height, and a vibration body and a conversion unit are respectively arranged on both sides of the axial height, and the vibration of the vibration body is transmitted to the conversion unit;

[0026] The conversion unit includes a screw nut 1, an axially arranged damping screw 2, a piston 3 and a viscous cylinder 4. The screw nut 1 is fixedly connected to the transmission unit, and the damping screw 2 is threadedly connected to the screw nut 1. The threads of the damping screw 2 and the screw nut 1 are semicircular grooves, and the connection is achieved through internal balls. The damping screw 2 is fixedly connected to the piston 3 at the end opposite to the screw nut 1. The connection between the damping screw 2 and the piston 3 can be welded. The piston 3 is arranged in the viscous cylinder 4. When the damping screw 2 rotates, the piston 3 rotates synchronously in the viscous cylinder 4. Specifically, the piston 3 has blades arranged in the radial direction, and the piston blades 3 are provided with through holes. The number of the piston blades is set to any number between 2 and 8, and the damping effect of the viscous liquid on the piston blades can be adjusted by setting through holes.

[0027] The vibration on the bridge is transmitted to the conversion unit through the transmission unit, and the vibration energy is converted. By setting the energy conversion unit, the displacement of the plate structure of the bridge is greatly reduced, thereby reducing the impact of the vibration on the main structure of the bridge, and increasing the comfort and safety of the bridge when in use. More specifically, a viscous liquid is set in the viscous cylinder 4. When the vibration of the bridge is transmitted to the screw nut 1 of the conversion unit, the up and down movement of the screw nut 1 causes the damping screw 2 to rotate accordingly, and the piston 3 and the damping screw 2 rotate synchronously, converting the vibration energy of the bridge into the rotation of the damping screw 2 and the piston 3.

[0028] The vibration-damping bearing may also include an elastic unit, which is in contact with the transmission unit. By reasonably selecting the elastic unit, the stiffness value of the bridge can be made more reasonable, and the elasticity of the elastic unit can extend the vibration period, thereby achieving a better shock absorption effect. The elastic unit is configured as a combination of one or more of a disc spring, a compression spring, and a leaf spring. Different elastic units can be selected according to different bridge application scenarios. In a preferred embodiment as shown in the figure, we use a plurality of disc springs 5 ​​stacked in order to achieve a reasonable stiffness value and effectively extend the natural vibration period of the oscillation.

[0029] The transmission unit can be designed in a variety of ways. In a preferred embodiment as shown in the figure, the transmission unit includes a top plate 6, a connecting plate 8, and a support rod 7 arranged between the top plate 6 and the connecting plate 8. The top plate 6 is used to contact or connect with the vibrating body, and the connecting plate 8 is fixedly connected to the screw nut 1. The vibration of the bridge plate is transmitted to the top plate 6, and then transmitted to the connecting plate 8 through the support rod 7, driving the synchronous movement of the screw nut 1 fixedly connected to the connecting plate 8. The connection between the screw nut 1 and the connecting plate 8 can be a bolt connection. The support rod 7 reserves enough space for the up and down movement of the screw nut 1, and the vibration reduction bearing can be directly set on the bridge plate and the foundation.

[0030] In order to make the rotation of the damping screw 2 and the piston 3 smoother and avoid jamming, the conversion unit further includes a thrust ball bearing 9, which is arranged in the viscous cylinder 4 and at a position corresponding to the damping screw 2. In some preferred embodiments of the present application, two thrust ball bearings 9 are provided, which are respectively arranged at the upper and lower parts of the fixed connection between the piston 3 and the damping screw 2.

[0031] In addition, the conversion unit further includes a base, which includes a bottom plate 10 and a hollow cylindrical cavity 11 arranged at the center of the bottom plate 10. The rotation axis of the damping screw 2 is an extension of the center line of the hollow cylindrical cavity, and the bottom of the viscous cylinder 4 is the bottom plate 10. By connecting the bottom plate 10 with the foundation, the installation of the shock-absorbing base can be made simpler and more convenient.

[0032] In some preferred embodiments of the present application, the elastic unit is arranged in the hollow cylindrical cavity 11. The lateral vibration displacement can be minimized.

[0033] Advantages of the implementation of the utility model: The utility model provides a vibration-damping bearing, which transmits the vibration on the bridge to the conversion unit through the transmission unit, converts the vibration energy, thereby reducing the impact of the vibration on the main structure of the bridge and increasing the comfort and safety of the bridge when in use. More specifically, a viscous liquid is arranged in the viscous cylinder. When the vibration of the bridge is transmitted to the screw nut of the conversion unit, the up and down movement of the screw nut causes the damping screw to rotate accordingly, and the piston and the damping screw rotate synchronously, converting the vibration energy of the bridge into the rotation of the damping screw and the piston. Furthermore, the setting of the elastic unit increases the stiffness value, prolongs the vibration period of the bridge vibration, and reduces the displacement of the screw nut. The setting of the hollow cylindrical cavity in the base reduces the displacement of the vibration in the horizontal direction.

[0034] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model shall be based on the protection scope of the claims.

Claims

1. A vibration-damping bearing, characterized in that: include: A transmission unit, wherein the transmission unit has an axial height, and a vibration body and a conversion unit are respectively arranged on both sides of the axial height, and the vibration of the vibration body is transmitted to the conversion unit; The conversion unit includes a screw nut, an axially arranged damping screw, a piston and a viscous cylinder. The screw nut is fixedly connected to the transmission unit, the damping screw is threadedly connected to the screw nut, the damping screw is fixedly connected to the piston at one end opposite to the screw nut, and the piston is arranged in the viscous cylinder. When the damping screw rotates, the piston rotates synchronously in the viscous cylinder.

2. The vibration damping support according to claim 1, characterized in that: The vibration-damping support further comprises an elastic unit, and the elastic unit abuts against the transmission unit.

3. The vibration damping support according to claim 2, characterized in that: The elastic unit is configured as one or a combination of disc springs, compression springs, and leaf springs.

4. The vibration damping bearing according to any one of claims 1 to 3, characterized in that: The transmission unit includes a top plate, a connecting plate, and a support rod arranged between the top plate and the connecting plate. The top plate is used to contact or connect with the vibration body, and the connecting plate is fixedly connected with the screw nut.

5. The vibration-damping bearing according to any one of claims 1 to 3, characterized in that: The conversion unit further includes a thrust ball bearing, which is disposed in the viscous cylinder and at a position corresponding to the damping screw rod.

6. The vibration damping bearing according to claim 5, characterized in that: The thrust ball bearings are provided in two pieces, which are respectively arranged at the upper part and the lower part of the fixed connection between the piston and the damping screw rod.

7. The vibration-damping bearing according to any one of claims 2 to 3, characterized in that: The conversion unit also includes a base, which includes a bottom plate and a hollow cylindrical cavity arranged at the center of the bottom plate. The rotation axis of the damping screw is an extension of the center line of the hollow cylindrical cavity, and the bottom of the viscous cylinder is the bottom plate.

8. The vibration damping bearing according to claim 7, characterized in that: The elastic unit is arranged in the hollow cylindrical cavity.

9. The vibration-damping bearing according to any one of claims 1 to 3, characterized in that: The piston is provided with blades arranged in the radial direction, and the number of the piston blades is set to any number between 2-8.

10. The vibration damping bearing according to claim 9, characterized in that: The piston blade is provided with a through hole.

Images