阅读说明：本技术 一种桥梁斜拉索抗风减振结构 (Bridge suspension cable wind-resistant vibration reduction structure ) 是由 胡波 刘庆宽 马超 付赛飞 韩鹏 于 2021-10-13 设计创作，主要内容包括：一种桥梁斜拉索抗风减振结构,本发明涉及斜拉索减振技术领域,一号连接杆活动插设在插管内；蜗杆固定在一号连接杆的下端,蜗杆设于插管内；蜗轮的数量为数个,且分别设于插管内,与蜗杆的啮合设置；蜗轮通过轴和轴承与插管的左右内侧壁旋接；一号卡环嵌设固定在插管的上端,一号卡环的内环壁与一号连接杆的环壁活动抵触设置；密封圈嵌设固定在插管内,且固定在一号卡环的上端,密封圈的内环壁与一号连接杆的环壁活动抵触设置；充分发挥了阻尼液的作用,起到了减振的作用；固定方式简单,便于进行安装。(The invention discloses a wind-resistant vibration reduction structure of a bridge stay cable, and relates to the technical field of stay cable vibration reduction, wherein a first connecting rod is movably inserted in a cannula; the worm is fixed at the lower end of the first connecting rod and is arranged in the insertion pipe; the worm gears are arranged in the insertion pipes and meshed with the worm; the worm wheel is screwed with the left inner side wall and the right inner side wall of the insertion pipe through a shaft and a bearing; the first snap ring is embedded and fixed at the upper end of the insertion pipe, and the inner annular wall of the first snap ring is movably abutted against the annular wall of the first connecting rod; the sealing ring is embedded and fixed in the cannula and fixed at the upper end of the first snap ring, and the inner annular wall of the sealing ring is movably abutted against the annular wall of the first connecting rod; the function of the damping fluid is fully exerted, and the vibration reduction function is realized; the fixing mode is simple and convenient to install.)

1. A bridge stay cable wind-resistant vibration reduction structure comprises a base (1), an insertion pipe (2) and damping liquid (3); the upper surface of the base (1) is obliquely arranged from left to right from low to high; the front and the back insertion tubes (2) are respectively fixed on the front and the back sides of the upper surface of the base (1); the insertion tube (2) is filled with damping fluid (3);

it is characterized in that it also comprises:

the extension mechanism (4), the extension mechanism (4) is arranged in the insertion tube (2);

the vibration reduction mechanism (5), the said vibration reduction mechanism (5) locates in intubate (2); the vibration damping mechanism (5) includes:

the first connecting rod (5-1), the first connecting rod (5-1) is movably inserted in the insertion pipe (2);

the worm (5-2), the worm (5-2) is fixed at the lower end of the first connecting rod (5-1), and the worm (5-2) is arranged in the insertion pipe (2);

the worm gears (5-3), the number of the worm gears (5-3) is several, and the worm gears are respectively arranged in the insertion pipe (2) and meshed with the worm (5-2); the worm wheel (5-3) is screwed with the left inner side wall and the right inner side wall of the insertion pipe (2) through a shaft and a bearing;

the first snap ring (5-4) is embedded and fixed at the upper end of the insertion pipe (2), and the inner annular wall of the first snap ring (5-4) is movably abutted with the annular wall of the first connecting rod (5-1);

the sealing ring (5-5) is embedded and fixed in the insertion pipe (2) and fixed at the upper end of the first snap ring (5-4), and the inner annular wall of the sealing ring (5-5) is movably abutted against the annular wall of the first connecting rod (5-1);

the second snap ring (5-6) is embedded and fixed in the insertion pipe (2) and fixed at the upper end of the sealing ring (5-5), and the inner annular wall of the second snap ring (5-6) is movably abutted against the annular wall of the first connecting rod (5-1);

the connecting mechanism (6) is arranged at the upper end of the first connecting rod (5-1); the connection mechanism (6) includes:

the front end and the rear end of the bottom of the second connecting rod (6-1) are respectively fixed on the front connecting rod (5) and the rear connecting rod (5-1);

the third connecting rod (6-2), the third connecting rod (6-2) is fixed on the second connecting rod (6-1); the upper end of the third connecting rod (6-2) is provided with a slot (6-3);

the number of the first fixing plates (6-4) is two, and the first fixing plates (6-4) are oppositely inserted into the slots (6-3) in a contact manner;

the first screw rod (6-5) is screwed and penetrated in the third connecting rod (6-2) and the first fixing plate (6-4);

the number of the fixed half rings (6-6) is two, the fixed half rings (6-6) are respectively fixed on the first fixing plate (6-4), and the front fixed half ring and the rear fixed half ring (6-6) are oppositely arranged;

the number of the second fixing plates (6-7) is two, and the second fixing plates (6-7) are respectively fixed at the upper ends of the fixed semi-rings (6-6);

the second screw rod (6-8) is screwed and penetrated on the two second fixing plates (6-7).

2. The wind-resistant vibration-damping structure for the stay cable of the bridge according to claim 1, wherein: the stretching mechanism (4) comprises:

the connecting pipe (4-1), the connecting pipe (4-1) is arranged on the inner side wall of the cavity (4-2) on the annular wall of the insertion pipe (2), and is in through connection with the connecting pipe (4-1); the bottom of the outer wall of the cavity (4-2) is provided with a drain hole (4-3), and the drain hole (4-3) is obliquely arranged from outside to inside from low to high;

the air bag (4-4), the air bag (4-4) is arranged in the cavity (4-2) and is connected with the connecting pipe (4-1) in a penetrating way;

the first connecting rod (5-1) is pushed into the insertion tube (2), and the extruded damping liquid (3) is extruded into the air bag (4-4), so that the influence of the pushing of the first connecting rod on vibration reduction is avoided.

3. The wind-resistant vibration-damping structure for the stay cable of the bridge according to claim 1, wherein: the bottom of the first connecting rod (5-1) is fixedly provided with a connecting plate (5-7), and the bottom of the connecting plate (5-7) is fixedly provided with a baffle (5-8); when the first connecting rod (5-1) moves, the baffle (5-8) moves in the damping liquid (3), so that the vibration damping effect is better.

4. The wind-resistant vibration-damping structure for the stay cable of the bridge according to claim 1, wherein: the front end and the rear end of the first screw rod (6-5) are respectively screwed and sleeved with a first nut (6-9), and the inner end of the first nut (6-9) is abutted against the third connecting rod (6-2); the first nut (6-9) enables the first screw (6-5) to be further fastened.

5. The wind-resistant vibration-damping structure for the stay cable of the bridge according to claim 1, wherein: a rubber pad (6-10) is fixed on the inner ring wall of the fixed semi-ring (6-6); the rubber pads (6-10) are attached to the diagonal tension lock, so that the friction force is improved.

6. The wind-resistant vibration-damping structure for the stay cable of the bridge according to claim 1, wherein: the front end and the rear end of the second screw rod (6-8) are respectively screwed and sleeved with a second nut (6-11), and the inner end of the second nut (6-11) is abutted against a second fixing plate (6-7); the second nut (6-11) enables the second screw (6-8) to be further fastened.

7. The working principle of the wind-resistant vibration-damping structure for the stay cable of the bridge according to claim 1 is characterized in that: when in use, the base (1) is poured and installed below the corresponding stay cable; screwing out a first screw (6-5) and a second screw (6-8) to take down the fixed semi-ring (6-6), fixing the stay cable in the fixed semi-ring (6-6), inserting the first fixed plate (6-4) in the slot (6-3), screwing the first screw (6-5) in the third connecting rod (6-2) and the first fixed plate (6-4), and screwing the second screw (6-8) in the two second fixed plates (6-7) to fix the stay cable by the fixed semi-ring (6-6); when vibration is generated, the stay cable pulls the third connecting rod (6-2), the second connecting rod (6-1) and the first connecting rod (5-1) to vibrate, the first connecting rod (5-1) moves, the worm (5-2) moves in the damping liquid (3) to drive the worm wheel (5-3) to move, the worm wheel (5-3) moves in the damping liquid (3), the movement of the worm wheel (5-3) generates resistance, the movement of the worm (5-2) is slow, and therefore vibration generated by the stay cable is reduced and offset, and vibration reduction is achieved.

Technical Field

The invention relates to the technical field of stay cable vibration reduction, in particular to a wind-resistant vibration reduction structure of a bridge stay cable.

Background

The stay cable is an important structural member in the cable-stayed bridge, and is easily subjected to external interference such as wind power due to high flexibility, low damping, and the like, thereby easily generating various types of vibration. The continuous vibration of the stay cables may cause fatigue or corrosion of the cable strands over a long period of time, which greatly reduces the life and safety of the cable-stayed bridge, and thus, it is necessary to minimize the vibration of the stay cables by using an appropriate method. At present, various dampers are provided for solving the vibration of the stay cable, and damping liquid is a common mode.

When using damping liquid at present, generally directly insert the pole in damping liquid, the effect is not good enough, and oblique cable and attenuator are difficult for fixing, for this reason, now proposes a bridge suspension cable anti-wind vibration damping structure.

Disclosure of Invention

The invention aims to provide a wind-resistant vibration reduction structure of a bridge stay cable, which fully plays the role of damping liquid and plays a role in vibration reduction aiming at the defects and shortcomings of the prior art; the fixing mode is simple and convenient to install.

In order to achieve the purpose, the invention adopts the technical scheme that: it comprises a base, an insertion tube and damping fluid; the upper surface of the base is obliquely arranged from left to right from low to high; the front and the rear insertion tubes are respectively fixed on the front and the rear sides of the upper surface of the base; damping liquid is filled in the insertion tube;

it also includes:

the extension mechanism is arranged in the insertion tube;

the vibration damping mechanism is arranged in the insertion pipe; the vibration damping mechanism includes:

the first connecting rod is movably inserted in the cannula;

the worm is fixed at the lower end of the first connecting rod and is arranged in the insertion pipe;

the worm wheels are arranged in the insertion pipe and meshed with the worm; the worm wheel is screwed with the left inner side wall and the right inner side wall of the insertion pipe through a shaft and a bearing;

the first snap ring is embedded and fixed at the upper end of the insertion pipe, and the inner annular wall of the first snap ring is movably abutted against the annular wall of the first connecting rod;

the sealing ring is embedded and fixed in the insertion pipe and fixed at the upper end of the first snap ring, and the inner annular wall of the sealing ring is movably abutted against the annular wall of the first connecting rod;

the second snap ring is embedded and fixed in the insertion pipe and fixed at the upper end of the sealing ring, and the inner annular wall of the second snap ring is movably abutted against the annular wall of the first connecting rod;

the connecting mechanism is arranged at the upper end of the first connecting rod; the connecting mechanism includes:

the front end and the rear end of the bottom of the second connecting rod are respectively fixed on the front connecting rod and the rear connecting rod;

the third connecting rod is fixed on the second connecting rod; the upper end of the third connecting rod is provided with a slot;

the number of the first fixing plates is two, and the first fixing plates are oppositely inserted into the slots in a contact manner;

the first screw rod is screwed and penetrated in the third connecting rod and the first fixing plate;

the number of the fixed semi-rings is two, the fixed semi-rings are respectively fixed on the first fixed plate, and the front fixed semi-ring and the rear fixed semi-ring are oppositely arranged;

the number of the second fixing plates is two, and the second fixing plates are respectively fixed at the upper ends of the fixed semi-rings;

and the second screw rod is screwed and penetrated on the two second fixing plates.

Preferably, the stretching mechanism comprises:

the connecting pipe is arranged on the inner side wall of the cavity on the annular wall of the insertion pipe and is in through connection with the connecting pipe; the bottom of the outer wall of the cavity is provided with a drain hole, and the drain hole is obliquely arranged from outside to inside from low to high;

the air bag is arranged in the cavity and is in through connection with the connecting pipe;

the first connecting rod is pushed towards the inside of the insertion pipe, and the extruded damping liquid is extruded into the air bag, so that the influence of the pushing of the first connecting rod on vibration reduction is avoided.

Preferably, the bottom of the first connecting rod is fixedly provided with a connecting plate, and the bottom of the connecting plate is fixedly provided with a baffle; when the first connecting rod moves, the baffle moves in the damping liquid, so that the vibration reduction effect is better.

Preferably, the front end and the rear end of the first screw rod are respectively screwed and sleeved with a first nut, and the inner end of the first nut abuts against a third connecting rod; the first nut enables the first screw to be further fastened.

Preferably, a rubber pad is fixed on the inner ring wall of the fixed half ring; the rubber pad and the oblique pull lock are attached to each other, so that friction force is improved.

Preferably, the front end and the rear end of the second screw rod are respectively screwed and sleeved with a second nut, and the inner end of the second nut abuts against the second fixing plate; and the second nut further fastens the second screw.

The working principle of the invention is as follows: when in use, the base is poured and installed below the corresponding stay cable; screwing out a first screw and a second screw to remove the fixed semi-ring, fixing the stay cable in the fixed semi-ring, inserting the first fixing plate into the slot, screwing the first screw into the third connecting rod and the first fixing plate, and screwing the second screw into the two second fixing plates to fix the stay cable by the fixed semi-ring; when vibration is generated, the stay cable pulls the third connecting rod, the second connecting rod and the first connecting rod to vibrate, the first connecting rod moves, the worm moves in damping liquid, the worm wheel is driven to move, the worm wheel moves in the damping liquid, resistance is generated in the movement of the worm wheel, the worm moves slowly, and therefore vibration generated by the stay cable is reduced and offset, and vibration reduction is achieved.

Compared with the prior art, the invention has the beneficial effects that:

1. the worm is provided with a damping mechanism, the worm wheel rotates in damping liquid, so that resistance is generated when the worm wheel moves, the worm moves slowly, the effect of the damping liquid is fully exerted, and the effect of damping is achieved;

2. the connecting mechanism is arranged, so that the fixing mode is simple and the installation is convenient.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is an enlarged view of a portion a in fig. 1.

Fig. 3 is a sectional view taken along line B-B in fig. 1.

Fig. 4 is an enlarged view of a portion C in fig. 3.

Fig. 5 is an enlarged view of a portion D in fig. 3.

Description of reference numerals:

the device comprises a base 1, an insertion pipe 2, damping liquid 3, an extension mechanism 4, a connecting pipe 4-1, a cavity 4-2, a drain hole 4-3, an air bag 4-4, a vibration reduction mechanism 5, a first connecting rod 5-1, a worm 5-2, a worm wheel 5-3, a first snap ring 5-4, a sealing ring 5-5, a second snap ring 5-6, a connecting plate 5-7, a baffle 5-8, a connecting mechanism 6, a second connecting rod 6-1, a third connecting rod 6-2, a slot 6-3, a first fixing plate 6-4, a first screw 6-5, a fixing semi-ring 6-6, a second fixing plate 6-7, a second screw 6-8, a first nut 6-9, a rubber pad 6-10 and a second nut 6-11.

Detailed Description

The invention will be further described with reference to the accompanying drawings.

Referring to fig. 1 to 5, the technical solution adopted by the present embodiment is: the device comprises a base 1, an insertion pipe 2 and damping liquid 3; the upper surface of the base 1 is obliquely arranged from left to right from low to high; the front and the rear insertion tubes 2 are respectively fixed on the front and the rear sides of the upper surface of the base 1 through bolts; the intubation tube 2 is filled with damping fluid 3;

it also includes:

the extension mechanism 4 is arranged in the insertion tube 2;

the vibration damping mechanism 5 is arranged in the insertion pipe 2; the vibration damping mechanism 5 includes:

the first connecting rod 5-1, the first connecting rod 5-1 is movably inserted in the insertion tube 2;

the worm 5-2 is welded and fixed at the lower end of the first connecting rod 5-1, and the worm 5-2 is arranged in the insertion pipe 2;

the number of the worm wheels 5-3 is several, and the worm wheels 5-3 are respectively arranged in the insertion pipe 2 and meshed with the worm 5-2; the worm wheel 5-3 is screwed with the left inner side wall and the right inner side wall of the insertion pipe 2 through a shaft and a bearing;

the first snap ring 5-4 is fixedly welded at the upper end of the insertion tube 2 in an embedded mode, and the inner annular wall of the first snap ring 5-4 is movably abutted against the annular wall of the first connecting rod 5-1;

the sealing ring 5-5 is fixedly embedded on the insertion pipe 2 through glue, and is fixedly adhered to the upper end of the first snap ring 5-4 through glue, and the inner annular wall of the sealing ring 5-5 is movably abutted to the annular wall of the first connecting rod 5-1;

the second snap ring 5-6 is welded, embedded and fixed in the insertion pipe 2 and is fixed at the upper end of the sealing ring 5-5 through glue, and the inner annular wall of the second snap ring 5-6 is movably abutted against the annular wall of the first connecting rod 5-1;

the connecting mechanism 6 is arranged at the upper end of the first connecting rod 5-1; the connection mechanism 6 includes:

the front end and the rear end of the bottom of the second connecting rod 6-1 are respectively fixed on the front connecting rod 5-1 and the rear connecting rod 5-1 through bolts;

the third connecting rod 6-2 is welded and fixed on the second connecting rod 6-1; the upper end of the third connecting rod 6-2 is provided with a slot 6-3;

the first fixing plates 6-4 are provided, the number of the first fixing plates 6-4 is two, and the first fixing plates 6-4 are oppositely inserted into the slots 6-3 in a contact manner;

the first screw 6-5 is screwed and penetrated in the third connecting rod 6-2 and the first fixing plate 6-4;

the number of the fixed half rings 6-6 is two, the fixed half rings 6-6 are respectively welded and fixed on the first fixed plate 6-4, and the front fixed half ring 6-6 and the rear fixed half ring 6-6 are oppositely arranged;

the number of the second fixing plates 6-7 is two, and the second fixing plates 6-7 are respectively welded and fixed at the upper ends of the fixed semi-rings 6-6;

the second screw rod 6-8 is screwed and penetrated on the two second fixing plates 6-7.

Preferably, the stretching mechanism 4 further comprises:

the connecting pipe 4-1 is arranged on the inner side wall of the cavity 4-2 on the annular wall of the insertion pipe 2, and the connecting pipe 4-1 is in through connection with the connecting pipe 4-1; the bottom of the outer wall of the cavity 4-2 is provided with a drain hole 4-3, and the drain hole 4-3 is obliquely arranged from outside to inside from low to high;

the air bag 4-4 is arranged in the cavity 4-2 and is in through connection with the connecting pipe 4-1;

the first connecting rod 5-1 is pushed into the insertion tube 2, and the extruded damping liquid 3 is extruded into the air bag 4-4, so that the influence of the pushing of the first connecting rod on vibration reduction is avoided.

Preferably, the bottom of the first connecting rod 5-1 is fixedly welded with a connecting plate 5-7, and the bottom of the connecting plate 5-7 is fixedly welded with a baffle plate 5-8; when the first connecting rod 5-1 moves, the baffle 5-8 moves in the damping liquid 3, so that the vibration reduction effect is better.

As a preferred scheme, furthermore, a first nut 6-9 is sleeved at the front end and the rear end of the first screw rod 6-5 in a screwing mode, and the inner end of the first nut 6-9 abuts against the third connecting rod 6-2; the first nut 6-9 enables the first screw 6-5 to be further fastened.

Preferably, a rubber pad 6-10 is fixed on the inner ring wall of the fixed half ring 6-6 by glue; the rubber pads 6-10 are attached to the diagonal lock, so that friction force is improved.

As a preferred scheme, furthermore, a second nut 6-11 is sleeved at the front end and the rear end of the second screw rod 6-8 in a screwing manner, and the inner end of the second nut 6-11 is abutted against a second fixing plate 6-7; the second nut 6-11 further fastens the second screw 6-8.

The working principle of the specific embodiment is as follows: when in use, the base 1 is poured and installed below the corresponding stay cable; screwing down a first nut 6-9 and a second nut 6-11, screwing out a first screw 6-5 and a second screw 6-8, taking down the fixed half ring 6-6, fixing the stay cable in the fixed half ring 6-6, inserting a first fixing plate 6-4 in the slot 6-3, screwing a first screw 6-5 in the third connecting rod 6-2 and the first fixing plate 6-4, screwing and sleeving the first nut 6-9 at the front and rear ends of the first screw 6-5 respectively, abutting the inner end of the first nut 6-9 on the third connecting rod 6-2, screwing and sleeving the second screw 6-8 on the two second fixing plates 6-7, screwing and sleeving the second nut 6-11 at the front and rear ends of the second screw 6-8 respectively, the inner end of the second nut 6-11 abuts against the second fixing plate 6-7, so that the stay cable is fixed by the fixed half ring 6-6, and the rubber pad 6-10 is attached to the stay cable lock, so that the friction force is improved; when vibration is generated, the stay cable pulls the third connecting rod 6-2, the second connecting rod 6-1 and the first connecting rod 5-1 to vibrate, the first connecting rod 5-1 is pushed into the insertion tube 2, the extruded damping liquid 3 is extruded into the air bag 4-4, the first connecting rod 5-1 is prevented from moving when the first connecting rod is pushed for a while to influence vibration reduction, so that the worm 5-2 moves in the damping liquid 3 to drive the worm wheel 5-3 to move, the worm wheel 5-3 moves in the damping liquid 3, so that the movement of the worm wheel 5-3 generates resistance, the movement of the worm 5-2 is slow, when the first connecting rod 5-1 moves, the baffle 5-8 moves in the damping liquid 3, the vibration reduction effect is better, so that the vibration generated by the stay cable is reduced and offset, and the vibration reduction is realized.

After adopting above-mentioned structure, this embodiment's beneficial effect does:

1. the damping mechanism 5 is arranged, the worm wheel 5-3 rotates in the damping liquid 3, so that the movement of the worm wheel 5-3 generates resistance, the movement of the worm 5-2 is slow, the effect of the damping liquid 3 is fully exerted, and the damping effect is achieved;

2. the connecting mechanism 6 is arranged, so that the fixing mode is simple and the installation is convenient.

The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent substitutions made by the person skilled in the art to the technical solutions of the present invention should be covered by the scope of the claims of the present invention without departing from the spirit and scope of the technical solutions of the present invention.