CN115163729B - Circumferential array type inhaul cable vibration energy dissipation ring based on acoustic black hole beam - Google Patents

Abstract

The application provides a circumferential array type inhaul cable vibration energy dissipation ring based on an acoustic black hole beam, which comprises a circumferential array acoustic black hole beam vibration reduction ring and a detachable fixed shell, wherein the circumferential array acoustic black hole beam vibration reduction ring comprises a mounting ring and a plurality of acoustic black hole beams, the acoustic black hole Liang Junyun are arranged on the outer side wall of the mounting ring in a surrounding mode, the circumferential array acoustic black hole beam vibration reduction ring is arranged in the detachable fixed shell and is coaxial with the detachable fixed shell, and inhaul cables penetrate through the mounting ring. The application can realize the combined use of a plurality of vibration reduction rings so as to improve the energy dissipation capacity, and meanwhile, the single vibration reduction ring has the advantages of 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 reduction device, in particular to a circumferential array type cable vibration energy dissipation ring based on an acoustic black hole beam.

Background technique

Bridge cables are the most important load-bearing components of cable-supported bridges and are the lifeline of bridges. Their durability and reliability are directly related to the safe operation and service life of bridges. However, the damage to bridge cables caused by vibration is not optimistic. Almost all the cables of in-service bridges are damaged by vibrations caused by factors such as wind, vehicle driving, earthquakes, etc., and the damage is getting worse day by day.

In the prior art, the service life of various cables such as bridges is extended by changing their materials and structural designs. However, the cost is high and the design is a molded type. There is no way to dissipate the energy of vibration. It only strengthens the strength of the cable itself. At the same time, it is difficult to modify the design of bridges in service, and the problem of cable damage caused by general vibration cannot be solved.

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 an acoustic black hole beam. As a later added accessory, it reduces the vibration effects of wind, vehicle driving, earthquake and other factors on various cables of bridges, and passively dissipates the vibration energy of the cables through the structural characteristics of the acoustic black hole beam without the need for external energy supply. The acoustic black hole beam structure adopts a curled type to reduce the volume of the entire device. Due to the design characteristics of the outer shell, it can be quickly disassembled and reassembled, and then multiple vibration damping rings can be used in combination. The structure is simple and easy to disassemble and assemble, with a long service life, good stability and low manufacturing cost.

The present invention provides a circumferential array type cable vibration energy dissipation ring based on an acoustic black hole beam, which adopts the following technical solutions:

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

Furthermore, the curve of the vertical section of the acoustic black hole beam satisfies the power-law curve distribution form, and adopts a curled form to reduce the volume, while the curves on both sides of the transverse section satisfy the power-law curve distribution form.

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

Furthermore, the detachable fixed shell includes a symmetrically arranged boss shell and a groove shell, and the circular array acoustic black hole beam vibration damping ring is evenly divided into two parts along the vertical direction and respectively arranged in the boss shell and the groove shell, and the boss shell and the groove shell are connected by bolts.

Furthermore, the boss shell and the groove shell are both provided with slots for installing the first acoustic black hole beam vibration damping ring and the second acoustic black hole beam vibration damping ring.

Furthermore, the boss shell and the groove shell are both provided with a plurality of fixing holes, and bolts pass through the fixing holes to fix the first acoustic black hole beam vibration damping ring and the second acoustic black hole beam vibration damping ring in the slot.

Furthermore, the joint surface of the boss shell is provided with a positioning boss, the joint 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 cable passes through the rubber sealing ring.

Furthermore, the circumferential array type cable vibration energy dissipation ring based on the acoustic black hole beam can be designed with an inner diameter according to different cables, and multiple ones can be used in combination.

In summary, the present application has at least one of the following beneficial effects:

1. As a later-added accessory, it reduces the vibration effects of wind, vehicle driving, earthquake and other factors on various cables of bridges. Through the tip energy dissipation characteristics of the acoustic black hole beam, the vibration energy of the cable is passively dissipated without external energy supply. The acoustic black hole beam structure 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 multiple vibration damping rings can be used in combination to improve the energy dissipation capacity. At the same time, the structure of a single vibration damping ring is simple, easy to disassemble and assemble, long service life, good stability and low manufacturing cost.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

FIG1 is a schematic structural diagram 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. 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.

FIG3 is a cross-sectional 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. 4 is a second cross-sectional 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. 5 is a view showing the installation of the circumferential array type cable vibration energy dissipation ring based on the acoustic black hole beam of the present invention on the cable.

Description of reference numerals:

1. Circular array acoustic black hole beam vibration reduction 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. 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 with reference to the accompanying drawings 1 to 5 of the specification:

An embodiment of the present application provides a circumferential array type cable vibration energy dissipation ring based on acoustic black hole beams. Referring to Figures 1 and 2, the circumferential array type cable vibration energy dissipation ring based on acoustic black hole beams includes a circumferential array acoustic black hole beam vibration reduction ring 1, a detachable fixed shell 2 and a rubber sealing ring 3.

The circular array acoustic black hole beam vibration 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 evenly arranged on the outer wall of the mounting ring 11, and one end of the acoustic black hole beam 12 extending outward is curled. The circular array acoustic black hole beam vibration damping ring 1 is installed in a detachable fixed shell 2 and is coaxially arranged with the detachable fixed shell 2, and the cable passes through the mounting ring 11.

3 and 4, the detachable fixed shell 2 is a truncated cone-shaped shell, comprising two semi-cylindrical boss shells 21 and a groove shell 22, wherein the splicing surface of the boss shell 21 is provided with a positioning boss 211, and the splicing surface of the groove shell 22 is provided with a positioning groove 221, when the boss shell 21 and the groove shell 22 are spliced together, the positioning boss 211 is inserted into the positioning groove 221; at the same time, a mounting plate 25 is provided on the top side of the side where the boss shell 21 and the groove shell 22 are spliced in the vertical direction, and the mounting plate 25 is provided on the upper and lower sides of the shell, and the boss shell 21 and the mounting plate 25 on the groove 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 easy disassembly and reorganization. In other embodiments, the detachable fixed shell 2 can be divided into multiple parts according to actual conditions. In this embodiment, the circular array acoustic black hole beam vibration damping ring 1 is evenly divided into two parts along the vertical direction, and the two parts are respectively installed on the boss shell 21 and the groove shell 22. The positioning boss 211 on the boss shell 21 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 play a limiting role for the circular array acoustic black hole beam vibration damping ring 1.

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 by a curled form, while the curves on both sides of the transverse section satisfy 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 speed of the bending wave gradually decreases to zero, so that no reflection occurs at the tip part, so that it has the characteristic of tip energy dissipation, which can reduce the vibration of the cable, and 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.

Referring to Figures 3 and 4, the boss shell 21 and the groove shell 22 are both provided with a slot 23 and a fixing hole 24 for installing the circular array acoustic black hole beam vibration damping ring 1. The fixing hole 24 extends to the shell surface. The two parts of the circular array acoustic black hole beam vibration damping ring 1 are respectively installed in the slots 23 of the boss shell 21 and the groove shell 22. Bolts are used to pass through the fixing holes 24 to fix the circular array acoustic black hole beam vibration damping ring 1 in the slots 23.

A semicircular groove is provided in the middle position of the joint surface of the boss shell 21 and the groove shell 22 in the vertical direction. When the boss shell 21 and the groove shell 22 are spliced together, the two grooves form a circular hole-shaped mounting hole 26. An annular ring groove is provided on the side wall of the mounting hole 26 close to the upper and lower openings. The rubber sealing ring 3 is installed in the mounting hole 26 and fixed in the mounting hole 26 through the ring groove. The cable passes through the rubber sealing ring 3 to fix the energy dissipation ring on the cable.

2 and 5 , the boss shell 21 and the groove shell 22 in the circumferential array type cable vibration energy dissipation ring based on the acoustic black hole beam can be designed with inner diameters according to different cables, and the circumferential array type cable vibration energy dissipation ring based on the acoustic black hole beam can be used in combination of multiple ones, and the vibration reduction performance can be enhanced by linear arrangement on the cables, and the specific fixed position and the number of uses can be changed.

The implementation principle of the circumferential array type cable vibration energy dissipation ring based on acoustic black hole beam is as follows: the circumferential array acoustic black hole beam vibration reduction ring 1 is fixedly installed in the boss housing 21 or the groove housing 22, the rubber sealing ring 3 is sleeved on the cable, and the boss housing 21 or the groove housing 22 are 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 to the cable with bolts.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims (5)

1. Circumferential array type inhaul cable vibration energy dissipation ring based on acoustic black hole beam, and is characterized in that: the acoustic black hole beam vibration reduction device comprises a circumferential array acoustic black hole beam vibration reduction ring (1) and a detachable fixed shell (2), wherein the circumferential array acoustic black hole beam vibration reduction ring (1) comprises a mounting ring (11) and a plurality of acoustic black hole beams (12), the acoustic black hole beams (12) are uniformly and circumferentially arranged on the outer side wall of the mounting ring (11), the circumferential array acoustic black hole beam vibration reduction ring (1) is arranged in the detachable fixed shell (2) and is coaxially arranged with the detachable fixed shell (2), and a guy cable penetrates through the mounting ring (11);

the detachable fixed shell (2) comprises a boss shell (21) and a groove shell (22) which are symmetrically arranged, the circumferential array acoustic black hole beam vibration reduction ring (1) is uniformly arranged into two parts along the vertical direction and is respectively arranged in the boss shell (21) and the groove shell (22), and the boss shell (21) is connected with the groove shell (22) through bolts;

Annular clamping grooves (23) for installing two parts of the circumferential array acoustic black hole beam vibration reduction ring (1) are respectively arranged in the boss shell (21) and the groove shell (22), and the shape of the clamping grooves (23) is matched with the shape of the installation ring (11);

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);

A rubber sealing ring (3) is arranged between the boss shell (21) and the groove shell (22), and the inhaul cable passes through the rubber sealing ring (3);

The middle positions of the splicing surfaces of the boss shell (21) and the groove shell (22) are provided with semicircular grooves along the vertical direction, when the boss shell (21) and the groove shell (22) are spliced together, the two grooves form a circular hole-shaped mounting hole (26), annular ring grooves are formed in the side walls of the mounting hole (26) close to the upper hole opening and the lower hole opening, the rubber sealing ring (3) is installed in the mounting hole (26) and is fixed in the mounting hole (26) through the ring grooves, and the inhaul cable passes through the rubber sealing ring (3) to fix the energy dissipation ring on the inhaul cable.

2. The circumferential array type cable vibration energy dissipation ring based on an acoustic black hole beam as defined in claim 1, wherein: the vertical cross section of the acoustic black hole beam (12) has a curve that satisfies a power law curve distribution and is reduced in volume in a crimped manner, while the lateral cross section has a curve that satisfies a power law curve distribution.

3. The acoustic black hole beam based circumferential array cable vibration energy dissipation ring as defined in claim 2, wherein: different forms of damping materials can be attached to the acoustic black hole beam (12) to improve damping performance and cope with complex environments.

4. The circumferential array type cable vibration energy dissipation ring based on an acoustic black hole beam as defined in claim 1, wherein: a plurality of fixing holes (24) are formed in the boss shell (21) and the groove shell (22), and bolts penetrate through the fixing holes (24) to fix the circumferential array acoustic black hole beam vibration reduction ring (1) in the clamping groove (23).

5. The circumferential array type cable vibration energy dissipation ring based on an acoustic black hole beam as defined in claim 1, wherein: the circumferential array type inhaul cable vibration energy dissipation ring based on the acoustic black hole beam can be designed to be in an inner diameter according to different inhaul cables and can be used in a plurality of combinations.