Stay cable damping device

Abstract

The utility model belongs to the technical field of bridge engineering structure damping, and particularly discloses a stay cable damping device which comprises an embedded pipe, damping rubber, a metal ring, a fixed wedge block and a movable wedge block, the embedded pipe is used for being arranged on a steel strand in a sleeved mode, the damping rubber is used for being arranged on the outer side of the steel strand in a sleeved mode, and the metal ring is arranged on the damping rubber in a sleeved mode. The fixed wedge block is fixed on the metal ring, and the side wall, close to one side of the embedded pipe, of the fixed wedge block forms a first conical structure; the movable wedge block is arranged on the inner side wall of the embedded pipe, the side wall of the side, close to the steel strand, of the movable wedge block forms a second conical structure corresponding to the first conical structure, and the side wall of the side, close to the steel strand, of the movable wedge block makes contact with the side wall of the side, close to the embedded pipe, of the fixed wedge block. According to the steel strand damping device, the metal ring is matched with the damping rubber sleeve to be arranged on the steel strand, damping of the steel strand is further achieved through the metal ring, the fixed wedge block and the movable wedge block of the wedge block structure, and the efficient damping effect can be provided for the steel strand.

Description

TECHNICAL FIELD

[0001] The utility model belongs to bridge engineering structure damping technical field, especially related to a cable-stayed damping device. BACKGROUND

[0002] As a kind of bridge form with large span, cable-stayed bridge is widely used in modern traffic infrastructure.Cable-stayed cable, as the important bearing component of bridge, bears huge tension and wind force, and is also easily influenced by external factors, specifically, when influenced by wind load, traffic load, temperature change and the like, different types of vibration can occur.Cable-stayed cable vibration not only affects the stability of bridge, but also can cause fatigue damage and structural instability.

[0003] Existing cable-stayed damping technology mostly uses damper and support device, but these technologies have certain limitations, such as poor adaptability, difficult adjustment, low efficiency and the like. UTILITY MODEL CONTENT

[0004] In view of the above problems, the utility model aims to provide a cable-stayed damping device, which can adapt to different working conditions and provide efficient and reliable damping effect.

[0005] The technical scheme of the utility model is: a cable-stayed damping device, comprising:

[0006] Embedded pipe, for sleeving on steel strand, installation gap exists between inner side wall of embedded pipe and outer side wall of steel strand;

[0007] Damping rubber, for sleeving on outer side of steel strand, located in installation gap;

[0008] Metal ring, sleeved on damping rubber, located in installation gap;

[0009] Fixed wedge, fixed on metal ring, located in installation gap, side wall of fixed wedge close to embedded pipe side constitutes first conical structure;

[0010] Movable wedge, arranged on inner side wall of embedded pipe, located in installation gap, side wall of movable wedge close to steel strand side constitutes second conical structure corresponding to first conical structure, side wall of movable wedge close to steel strand side contacts with side wall of fixed wedge close to embedded pipe side.

[0011] Further, it further includes fixed baffle, which is arranged on fixed wedge and contacts with movable wedge, for blocking movable wedge.

[0012] Further, the fixed baffle adopts high-strength alloy steel.

[0013] Further, the damping rubber material adopts high-elasticity material.

[0014] Further, the metal ring adopts stainless steel material.

[0015] Further, the movable wedge is fixed by spot welding with the inner wall of the embedded pipe.

[0016] Further, the movable wedge is fixed by spot welding with the inner wall of the embedded pipe.

[0017] The working principle of the utility model is as follows: before use, the embodiment is assembled between the stay cable and the support, wherein the steel strand, i.e. the stay cable, fixes the outer side of the embedded pipe on the support. When in use, if the steel strand is vibrated by external factors such as wind load or traffic load, the energy generated by vibration can be effectively reduced through the friction of the contact surface between the movable wedge and the fixed wedge, and the damping rubber can also generate sufficient damping effect when the steel strand vibrates.

[0018] Compared with the prior art, the utility model has the beneficial effects that:

[0019] The utility model discloses a metal ring cooperates with damping rubber and is arranged on the steel strand, and further realizes the damping of the steel strand with the fixed wedge and the movable wedge of the wedge structure, so that the damping device can provide efficient damping effect for the steel strand under different working conditions, especially has remarkable inhibitory action to the vibration caused by wind load and traffic load.

[0020] The design of the movable wedge and the fixed wedge of the shock absorber makes them automatically adjust the contact force according to the vibration intensity and adapt to the damping demand under different working conditions. DRAWINGS

[0021] Fig. 1 It is the sectional view of the utility model;

[0022] Fig. 2 It is the left view of the utility model;

[0023] Fig. 3 It is the right view of the utility model.

[0024] Wherein, 1-steel strand, 2-embedded pipe, 3-damping rubber, 4-metal ring, 5-fixed wedge, 6-movable wedge, 7-fixed baffle. CONCRETE IMPLEMENTATION

[0025] The following will be combined with Figs. 1 to 3The utility model discloses a specific embodiment is described in detail. In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as a limitation on the utility model.

[0026] The terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more features; in the description of the utility model, unless otherwise specified, the meaning of "multiple" is two or more.

[0027] Embodiment

[0028] As Fig. 1 、 Fig. 2 、 Fig. 3 A kind of cable-stayed cable shock absorber shown in the figure, including pre-buried pipe 2, shock absorbing rubber 3, metal ring 4, fixed wedge 5 and movable wedge 6.

[0029] Pre-buried pipe 2 is used to set on steel strand 1, and there is installation gap between the inner side wall of pre-buried pipe 2 and the outer side wall of steel strand 1;Shock absorbing rubber 3 is used to set on the outer side of steel strand 1, and is located in installation gap;Metal ring 4 is set on shock absorbing rubber 3, and is located in installation gap, and the setting of metal ring 4 effectively enhances the structural rigidity of shock absorber whole. Fixed wedge 5 is fixed on metal ring 4, and is located in installation gap, and the side wall of fixed wedge 5 close to pre-buried pipe 2 side constitutes first conical structure;Movable wedge 6 is arranged on the inner side wall of pre-buried pipe 2, and is located in installation gap, and the side wall of movable wedge 6 close to steel strand 1 side constitutes second conical structure corresponding to first conical structure, and the side wall of movable wedge 6 close to steel strand 1 side contacts with the side wall of fixed wedge 5 close to pre-buried pipe 2 side.

[0030] It should be noted that: the contact surface of movable wedge 6 and fixed wedge 5 is offset by friction force to realize shock absorption, and then the working state of shock absorber can be adjusted by changing the angle of contact inclined plane between movable wedge 6 and fixed wedge 5 in actual application to adapt to the shock absorption demand under different working conditions.

[0031] Preferably, the fixed stopper 7 is arranged on the fixed wedge 5 and contacts the movable wedge 6, and is used to block the movable wedge 6.

[0032] Preferably, the fixed stopper 7 is made of high-strength alloy steel, which has good wear resistance and corrosion resistance, and can effectively adapt to the slight movement of the movable wedge 6 in actual use.

[0033] Preferably, the shock-absorbing rubber 3 is made of high-elasticity material, which can generate sufficient damping effect when the cable-stayed cable vibrates.

[0034] Preferably, the metal ring 4 is made of stainless steel, which enhances the structural rigidity of the shock absorber and ensures the stability in long-term use.

[0035] Preferably, the movable wedge 6 is spot-welded to the inner wall of the embedded pipe 2, and in actual implementation, after the fixed stopper 7 is bent to rivet the movable wedge 6, the movable wedge 6 is spot-welded to the inner wall of the embedded pipe 2.

[0036] Preferably, the spot-welding position between the movable wedge 6 and the inner wall of the embedded pipe 2 is provided with an anti-rust layer, which effectively prevents rusting at the spot-welding position, and in the embodiment, the anti-rust layer is a rust-preventive paint.

[0037] The working principle of the embodiment is as follows:

[0038] Before use, the embodiment is assembled between the cable-stayed cable and the support, wherein the steel strand 1 is the cable-stayed cable, and the outer side of the embedded pipe 2 is fixed on the support.

[0039] In use, if the steel strand 1 is vibrated due to external factors such as wind load or traffic load, the energy generated by the vibration can be effectively reduced through the friction between the contact surface of the movable wedge 6 and the fixed wedge 5, and the shock-absorbing rubber can also generate sufficient damping effect when the steel strand 1 vibrates.

[0040] The above-described specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the utility model, and it should be understood that the above-described specific embodiments are only examples of the utility model, and do not limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model are included in the protection scope of the utility model.

Claims

1. A stay cable shock absorber characterized by, The utility model relates to a kind of steel strand embedded pipe, including: Pre-bury pipe (2) for being set on steel strand (1), and there is installation gap between the inner side wall of pre-bury pipe (2) and the outer side wall of steel strand (1); Damping rubber (3) for being set on the outside of steel strand (1), located in installation gap; Metal ring (4) is set on damping rubber (3), located in installation gap; Fixed wedge (5) is fixed on metal ring (4), located in installation gap, and the side wall of fixed wedge (5) near pre-bury pipe (2) constitutes first conical structure; Movable wedge (6) is arranged on the inner side wall of pre-bury pipe (2), located in installation gap, and the side wall of movable wedge (6) near steel strand (1) constitutes second conical structure corresponding with first conical structure, and the side wall of movable wedge (6) near steel strand (1) is in contact with the side wall of fixed wedge (5) near pre-bury pipe (2).

2. A stay cable damper as defined in claim 1, wherein It also includes fixed baffle (7), which is arranged on fixed wedge (5) and in contact with movable wedge (6), for blocking movable wedge (6).

3. A stay cable damper as defined in claim 2 wherein, The fixed baffle (7) is made of high-strength alloy steel.

4. A stay cable damper as defined in claim 1 wherein, The damping rubber (3) is made of high-elasticity material.

5. A stay cable damper as defined in claim 1 wherein, The metal ring (4) is made of stainless steel.

6. A stay cable damper as defined in claim 1 wherein, The movable wedge (6) is spot-welded to the inner wall of the pre-bury pipe (2).

7. A stay cable damper as defined in claim 6 wherein, A rust-proof layer is provided at the spot-welding position between the movable wedge (6) and the inner wall of the pre-bury pipe (2).

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