CN115163729A - Circumferential Array Cable Vibration Energy Dissipation Ring Based on Acoustic Black Hole Beam - Google Patents

Abstract

The invention provides a circumferential array type cable vibration energy dissipation ring based on an acoustic black hole beam, comprising a circular array acoustic black hole beam damping ring and a detachable fixed casing, the circular array acoustic black hole beam damping ring including a mounting ring and a number of acoustic black hole beams, a plurality of the acoustic black hole beams are evenly arranged around the outer side wall of the installation ring, the circular array acoustic black hole beam damping ring is arranged in the detachable fixed casing, and is arranged coaxially with the detachable fixed casing, The cable passes through the mounting ring. The application can realize the combined use of a plurality of vibration damping rings to improve the energy dissipation capacity, and at the same time, the single vibration damping ring has simple structure, convenient disassembly and assembly, long service life, good stability and low manufacturing cost.

Description

Circumferential Array Cable Vibration Energy Dissipation Ring Based on Acoustic Black Hole Beam

technical field

The invention relates to a vibration damping device, in particular to a circumferential array type cable vibration energy dissipation ring based on an acoustic black hole beam.

Background technique

The bridge cable is the most important bearing member of the cable-supported bridge and the lifeline of the bridge. Its durability and reliability are directly related to the safe operation and service life of the bridge. However, the damage to bridge cables due to vibration is not optimistic. Almost all bridges in service have their cables damaged by vibrations from factors such as wind, vehicle driving, and earthquakes, and they are getting worse day by day.

In the prior art, the service life of various types of cables such as bridges is extended by changing the material and structural design of the cables, but the cost is high and the design is formed. Due to its own strength, it is difficult to modify the design of bridges in service, and it cannot solve the problem of cable damage caused by general vibration.

SUMMARY OF THE INVENTION

In view of this, the purpose of the present invention is to provide a circumferential array type cable vibration energy dissipation ring based on acoustic black hole beam, as a later added accessory, so that various types of cables such as bridges are affected by wind force and vehicle driving. The vibration influence of factors such as earthquakes, etc. is reduced, and the vibration energy of the cable is passively dissipated through the structural characteristics of the acoustic black hole beam, without external energy supply, and the structure of the acoustic black hole beam adopts a curled type to reduce the volume of the entire device. The design characteristics of the casing enable it to be quickly disassembled and reassembled, and then multiple vibration damping rings can be used in combination, with a simple structure, convenient disassembly and assembly, long service life, good stability and low manufacturing cost.

A kind of circumferential array type cable vibration energy dissipation ring based on acoustic black hole beam provided by the present invention adopts the following technical solutions:

A circumferential array type cable vibration energy dissipation ring based on acoustic black hole beam, comprising a circular array acoustic black hole beam damping ring and a detachable fixed casing, the circular array acoustic black hole beam damping ring includes a mounting ring and a plurality of acoustic black hole beams Black hole beams, a plurality of the acoustic black hole beams are evenly arranged on the outer side wall of the installation ring, the circular array acoustic black hole beam vibration damping ring is arranged in the detachable fixed shell, and is arranged coaxially with the detachable fixed shell, and the cable passes through the outer wall. over the mounting ring.

Further, the curve of the vertical section of the acoustic black hole beam satisfies the power-law curve distribution form, and the volume is reduced in the form of curling, while the curves on both sides of the transverse section satisfy the power-law curve distribution form.

Further, different forms of damping materials can be attached to the acoustic black hole beam to improve damping performance and cope with complex environments.

Further, the detachable fixed shell includes a boss shell and a groove shell that are symmetrically arranged, and the circular array acoustic black hole beam damping ring is evenly divided into two parts along the vertical direction, which are respectively arranged on the boss shell. Inside the groove casing, the boss casing and the groove casing are connected by bolts.

Further, both the boss shell and the groove shell are provided with clamping grooves for installing the first acoustic black hole beam damping ring and the second acoustic black hole beam damping ring.

Further, the boss shell and the groove shell are provided with several fixing holes, and the bolts pass through the fixing holes to fix the first acoustic black hole beam damping ring and the second acoustic black hole beam damping ring in the slot. .

Further, the splicing surface of the boss shell is provided with a positioning boss, the splicing surface of the groove shell is provided with a positioning groove, and the positioning boss is inserted into the positioning groove.

Optionally, a rubber sealing ring is provided between the boss housing and the groove housing, and the pull cable passes through the rubber sealing ring.

Further, the vibration energy dissipation ring of the circumferential array type cable based on the acoustic black hole beam can be designed according to the inner diameter of different cables, and can be used in multiple combinations.

To sum up, the present application contains at least one of the following beneficial effects:

1. As an add-on added later, various types of cables such as bridges are reduced by the vibration of wind, vehicle driving, earthquakes, etc.; Passive dissipation, no external energy supply is required, and the structure of the acoustic black hole beam adopts a curled type to reduce the volume of the entire device. At the same time, different types of damping materials can be attached to the acoustic black hole beam to achieve the effect of increasing the damping performance;

2. Due to the design characteristics of the shell, it can be quickly disassembled and reassembled, and then multiple vibration damping rings can be combined to improve the energy dissipation capacity. Long, stable and low manufacturing cost.

Description of drawings

Below in conjunction with accompanying drawing and embodiment, the present invention is further described:

FIG. 1 is a schematic structural diagram of a circumferential array cable vibration energy dissipation ring based on an acoustic black hole beam in an embodiment of the present application.

FIG. 2 is an exploded view of a circumferential array type cable vibration energy dissipation ring based on an acoustic black hole beam in an embodiment of the present application.

FIG. 3 is a cross-sectional view diagram 1 of a circumferential array cable vibration energy dissipation ring based on an acoustic black hole beam in an embodiment of the present application.

FIG. 4 is a second cross-sectional view of a circumferential array cable vibration energy dissipation ring based on an acoustic black hole beam in an embodiment of the present application.

FIG. 5 is a view showing that the vibration energy dissipating ring of the circumferential array type cable based on the acoustic black hole beam of the present invention is installed on the cable.

Description of reference numbers:

1. Circular array acoustic black hole beam damping ring; 11. Mounting ring; 12. Acoustic black hole beam; 2. Removable fixed shell; 21. Boss shell; 211. Positioning boss; 22. Groove shell; 221 , positioning groove; 23, card slot; 24, fixing hole; 25, mounting plate; 26, mounting hole; 3, rubber sealing ring.

Detailed ways

The present invention is further described in detail below in conjunction with accompanying drawings 1-5 of the description:

The embodiment of the present application provides a circumferential array type cable vibration energy dissipation ring based on an acoustic black hole beam. Referring to FIG. 1 and FIG. 2 , the circumferential array type cable vibration energy dissipation ring based on the acoustic black hole beam includes a circular array Acoustic black hole beam damping ring 1 , detachable fixed casing 2 and rubber sealing ring 3 .

The circular array acoustic black hole beam damping ring 1 includes an installation ring 11 and a plurality of acoustic black hole beams 12 , the plurality of acoustic black hole beams 12 are evenly arranged on the outer side wall of the installation ring 11 , and the outwardly extending end of the acoustic black hole beam 12 is curled , the circular array acoustic black hole beam damping ring 1 is installed in the detachable fixed casing 2 and coaxially arranged with the detachable fixed casing 2 , and the cable passes through the installation ring 11 .

Referring to FIGS. 3 and 4 , the detachable fixed housing 2 is a truncated shell, including two semi-cylindrical boss shells 21 and groove shells 22 , wherein the splicing surface of the boss shell 21 is provided with a positioning The boss 211 is provided with a positioning groove 221 on the splicing surface of the groove shell 22. When the boss shell 21 and the groove shell 22 are spliced together, the positioning boss 211 is inserted into the positioning groove 221; The top side of the surface where the boss shell 21 and the groove shell 22 are spliced is provided with a mounting plate 25 along the vertical direction, and the mounting plate 25 is located on the upper and lower sides of the shell. The mounting plates 25 on the shell 22 are spliced together, and the boss shell 21 and the mounting plate 25 on the groove shell 22 are fixed together by bolts to form a complete annular structure and achieve the purpose of facilitating disassembly and reorganization , in other embodiments, the detachable fixed housing 2 can be divided into multiple parts according to the actual situation. In this embodiment, the circular array acoustic black hole beam damping ring 1 is evenly divided into two parts in the vertical direction, and the two parts are installed on the boss shell 21 and the groove shell 22 respectively. The positioning boss 211 is inserted into the positioning groove 221 on the groove shell 22, which can avoid displacement between the boss shell 21 and the groove shell 22, and can limit the circular array acoustic black hole beam damping ring 1 effect.

Referring to FIG. 2 , the curve of the vertical section of the acoustic black hole beam 12 satisfies the power-law curve distribution form, and the volume is reduced in the form of curling, while the curves on both sides of the transverse section meet the power-law curve distribution form. The power-law curve satisfies the curve equation of the one-dimensional acoustic black hole beam, and the relative velocity of the bending wave gradually decreases to zero, so that no reflection occurs at the tip, which makes it have the characteristics of tip energy dissipation, which can play a role in the cable. At the same time, the complete ring is disassembled into two or more forms for convenient disassembly and assembly.

Different forms of damping materials can be attached to the acoustic black hole beam structure to improve the damping performance and cope with complex environments. The vibration reduction performance of the acoustic black hole beam structure cannot be adjusted. By adding damping materials, its performance can be adjusted for specific environments.

3 and 4 , the boss housing 21 and the groove housing 22 are both provided with a slot 23 and a fixing hole 24 for installing the circular array acoustic black hole beam damping ring 1, and the fixing hole 24 extends to the shell. On the body surface, the two parts of the circular array acoustic black hole beam damping ring 1 are respectively installed in the grooves 23 of the boss shell 21 and the groove shell 22, and the circular array acoustic black hole beam is damped by bolts passing through the fixing holes 24. The ring 1 is fixed in the slot 23 .

A semicircular groove is formed in the vertical direction at the intermediate position of the splicing surface of the boss shell 21 and the groove shell 22. When the boss shell 21 and the groove shell 22 are spliced together, two grooves are formed. The groove forms a circular hole-shaped mounting hole 26. The side wall of the mounting hole 26 close to the upper and lower openings is provided with an annular ring groove. The rubber sealing ring 3 is installed in the mounting hole 26 and fixed in the mounting hole 26 through the ring groove Inside, the cable passes through the rubber sealing ring 3 to fix the energy dissipating ring on the cable.

2 and 5, the boss shell 21 and the groove shell 22 in the vibration energy dissipation ring of the circumferential array cable based on the acoustic black hole beam can be designed according to different cable inner diameters, and based on the acoustic black hole beam Circumferential array cable vibration energy dissipating rings can be used in multiple combinations, and the vibration reduction performance can be enhanced by linear arrangement on the cables.

The implementation principle of the circumferential array cable vibration energy dissipation ring based on the acoustic black hole beam is as follows: the circular array acoustic black hole beam damping ring 1 is fixedly installed in the boss shell 21 or the groove shell 22, and the The rubber sealing ring 3 is sleeved on the cable, and the boss shell 21 or the groove shell 22 is spliced together. The rubber sealing ring 3 is clamped in the mounting hole 26 between the boss housing 21 or the groove housing 22, and the boss housing 21 or the groove housing 22 is fixed on the cable with bolts.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be Modifications or equivalent substitutions without departing from the spirit and scope of the technical solutions of the present invention should be included in the scope of the claims of the present invention.

Claims (9)

1. a circumferential array type cable vibration energy dissipation ring based on an acoustic black hole beam, is characterized in that: comprising a circular array acoustic black hole beam vibration damping ring (1), a detachable fixed casing (2), the circular array The acoustic black hole beam damping ring (1) includes a mounting ring (11) and a plurality of acoustic black hole beams (12), the plurality of acoustic black hole beams (12) are uniformly arranged around the outer side wall of the mounting ring (11), and the circumferential array The acoustic black hole beam damping ring (1) is arranged in the detachable fixed casing (2), and is arranged coaxially with the detachable fixed casing (2), and the cable passes through the installation ring (11). 2. The circumferential array type cable vibration energy dissipation ring based on the acoustic black hole beam according to claim 1, characterized in that: the curve of the vertical section of the acoustic black hole beam (12) satisfies the power-law curve distribution form , and the volume is reduced in the form of curling, and the curves on both sides of the transverse section satisfy the power-law curve distribution form. 3. The circumferential array type cable vibration energy dissipation ring based on the acoustic black hole beam according to claim 2, characterized in that: different forms of damping materials can be attached to the acoustic black hole beam (12) to improve damping performance and deal with complex environments. 4. The circumferential array type cable vibration energy dissipation ring based on acoustic black hole beam according to claim 1, characterized in that: the detachable fixed shell (2) comprises a symmetrically arranged boss shell (21) and the groove casing (22), the circular array acoustic black hole beam damping ring (1) is evenly divided into two parts along the vertical direction, and is respectively arranged on the boss casing (21) and the groove casing (22) ), the boss housing (21) and the groove housing (22) are connected by bolts. 5. The circumferential array type cable vibration energy dissipating ring based on acoustic black hole beam according to claim 4, characterized in that: both the boss shell (21) and the groove shell (22) are provided inside There is a slot (23) for installing the vibration damping ring (1) of the circular array acoustic black hole beam. 6. The circumferential array type cable vibration energy dissipation ring based on acoustic black hole beam according to claim 5, characterized in that: the boss shell (21) and the groove shell (22) are both provided with There are several fixing holes (24), and bolts pass through the fixing holes (24) to fix the circular array acoustic black hole beam vibration damping ring (1) in the clamping groove (23). 7. The circumferential array type cable vibration energy dissipation ring based on acoustic black hole beam according to claim 6, wherein the splicing surface of the boss shell (21) is provided with a positioning boss (211) ), the splicing surface of the groove shell (22) is provided with a positioning groove (221), and the positioning boss 211 is inserted into the positioning groove (221). 8. The circumferential array type cable vibration energy dissipation ring based on the acoustic black hole beam according to claim 7, characterized in that: between the boss shell (21) and the groove shell (22) There is a rubber sealing ring (3), and the cable passes through the rubber sealing ring (3). 9. The circumferential array type cable vibration energy dissipation ring based on the acoustic black hole beam according to claim 1, characterized in that: the circumferential array type cable vibration energy dissipation ring based on the acoustic black hole beam can be Different cable designs have inner diameters and can be used in multiple combinations.

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