Large-displacement beam end telescopic device

Abstract

The utility model discloses a large-displacement beam end expansion device, which belongs to the technical field of bridges and is characterized by comprising two connecting plates, a sealing tape is arranged between opposite sides of the two connecting plates, and noise reduction mechanisms are arranged at the tops of the connecting plates. The noise reduction mechanism comprises a plurality of noise reduction frames, a plurality of mounting holes and a mounting plate, the sides, close to the mounting plate, of the noise reduction frames are fixedly connected with the mounting plate, the mounting holes are formed in the mounting plate, the bottom of the mounting plate makes contact with the top of the connecting plate, and the noise reduction frames are made of high-strength rubber; an elastic steel bar is embedded in the noise reduction frame, and the side, close to the mounting plate, of the elastic steel bar is fixedly connected with the mounting plate, so that the problems that large noise is generated when a vehicle passes through the large-displacement beam end telescopic device due to the fact that most existing large-displacement beam end telescopic devices do not have the noise reduction function, and the urban environment is affected are solved. Therefore, the use effect is influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of bridges, and particularly relates to a large-displacement beam end expansion device. Background Art

[0002] The large-displacement beam end expansion device is an important device for bridge connection structures, and it can adapt to the longitudinal displacement of bridges under the influence of factors such as temperature changes and load effects.

[0003] Most of the existing large-displacement beam end expansion devices do not have a noise reduction function. When vehicles pass through the large-displacement beam end expansion device, it will generate relatively large noise, affecting the urban environment. Summary of the Utility Model

[0004] The utility model provides a large-displacement beam end expansion device, aiming to solve the problem that most of the existing large-displacement beam end expansion devices do not have a noise reduction function. When vehicles pass through the large-displacement beam end expansion device, it will generate relatively large noise, affecting the urban environment and thus affecting the use effect.

[0005] The utility model is realized as follows. A large-displacement beam end expansion device includes two connecting plates. A sealing strip is arranged between the opposite sides of the two connecting plates. A noise reduction mechanism is arranged on the top of the connecting plate.

[0006] The noise reduction mechanism includes a plurality of noise reduction frames, a plurality of mounting holes and a mounting plate. The side of the noise reduction frame close to the mounting plate is fixedly connected to the mounting plate. The mounting holes are opened inside the mounting plate. The bottom of the mounting plate is in contact with the top of the connecting plate.

[0007] In order to achieve the effect of increasing the support of the noise reduction frame, preferably, as a large-displacement beam end expansion device of the utility model, the material of the noise reduction frame is high-strength rubber, and an elastic steel bar is embedded inside the noise reduction frame. The side of the elastic steel bar close to the mounting plate is fixedly connected to the mounting plate.

[0008] In order to achieve the effect of connecting the mounting plate and the connecting plate, preferably, as a large-displacement beam end expansion device of the utility model, screws are arranged on the top of the mounting plate. The bottom of the screws passes through the mounting plate and is threadedly connected to the inside of the connecting plate.

[0009] In order to achieve the effect of preventing the mounting plate and the connecting plate from deforming, preferably, as a large-displacement beam end expansion device of the utility model, the screws are embedded inside the mounting plate, and the materials of the mounting plate and the connecting plate are both high-strength steel.

[0010] In order to achieve the effect of facilitating the sealing between two connecting plates, as an optimization of the large-displacement beam-end expansion device of the present utility model, a card slot is provided inside the connecting plate, and the sealing strip is clamped between the opposite sides of the two card slots. The material of the sealing strip is high-weatherability rubber.

[0011] In order to achieve the effect of extending the service life of the connecting plate and the mounting plate, as an optimization of the large-displacement beam-end expansion device of the present utility model, corrosion-resistant layers are sprayed on the surfaces of the connecting plate and the mounting plate. The material of the corrosion-resistant layer is a fluorocarbon coating.

[0012] In order to achieve the effect of facilitating the connection between the connecting plate and the bridge, as an optimization of the large-displacement beam-end expansion device of the present utility model, fixing frames are fixedly connected to the opposite sides of the two connecting plates. The number of the fixing frames is several and they are evenly distributed on the surface of the connecting plate.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] For this large-displacement beam-end expansion device, by using the method of post-casting concrete to pour and connect the fixing frame with the bridge, the connecting plate can be connected to the bridge. Then, screws are used to connect the mounting plate with the connecting plate. When a vehicle passes over the tops of the two mounting plates, the high-strength rubber noise reduction frame embedded with elastic steel bars will elastically support the wheels, thereby reducing the noise generated when the wheels pass, avoiding the problem that most existing large-displacement beam-end expansion devices do not have a noise reduction function, and generating a large amount of noise when the vehicle passes through the large-displacement beam-end expansion device, which affects the urban environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the overall structure diagram of the large-displacement beam-end expansion device of the present utility model;

[0016] Figure 2 It is the three-dimensional exploded view of the connecting plate and the sealing strip in the present utility model;

[0017] Figure 3 It is the three-dimensional exploded view of the mounting plate and the screw in the present utility model;

[0018] Figure 4 It is the cross-sectional view of the noise reduction frame in the present utility model;

[0019] Figure 5 It is the cross-sectional view of the mounting plate in the present utility model.

[0020] In the figure, 1. Connecting plate; 2. Sealing strip; 3. Fixing frame; 4. Noise reduction mechanism; 401. Noise reduction frame; 402. Mounting hole; 403. Mounting plate; 5. Screw; 6. Elastic steel bar; 7. Corrosion-resistant layer; 8. Card slot. Detailed implementation mode

[0021] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0022] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In addition, in the description of the present utility model, the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0023] Please refer to Figures 1-5 , the present utility model provides a technical solution: a large-displacement beam-end expansion device, including two connecting plates 1, a sealing strip 2 is arranged between the opposite sides of the two connecting plates 1, and a noise reduction mechanism 4 is arranged on the top of the connecting plate 1;

[0024] The noise reduction mechanism 4 includes a plurality of noise reduction frames 401, a plurality of mounting holes 402 and a mounting plate 403. One side of the noise reduction frame 401 close to the mounting plate 403 is fixedly connected to the mounting plate 403. The mounting holes 402 are opened inside the mounting plate 403, and the bottom of the mounting plate 403 is in contact with the top of the connecting plate 1.

[0025] In this embodiment: the fixing frame 3 is connected to the bridge by means of post-cast concrete, and then the mounting plate 403 is connected to the connecting plate 1 by screws 5. When a vehicle passes over the tops of the two mounting plates 403, the high-strength rubber noise reduction frame 401 embedded with elastic steel bars 6 will elastically support the wheels, thereby reducing the noise generated when the wheels pass, and avoiding the problem that most existing large-displacement beam-end expansion devices do not have a noise reduction function, and will generate relatively large noise when the vehicle passes through the large-displacement beam-end expansion device, affecting the urban environment.

[0026] As a technical optimization scheme of the present utility model, the material of the noise reduction frame 401 is high-strength rubber, an elastic steel bar 6 is embedded inside the noise reduction frame 401, and one side of the elastic steel bar 6 close to the mounting plate 403 is fixedly connected to the mounting plate 403.

[0027] In this embodiment, by inlaying elastic steel bars 6 inside the noise reduction frame 401, the noise reduction frame 401 can have strong support, achieving the effect of increasing the support of the noise reduction frame 401.

[0028] As a technical optimization solution of the utility model, a screw 5 is provided on the top of the mounting plate 403. The bottom of the screw 5 passes through the mounting plate 403 and is threadedly connected to the inside of the connecting plate 1.

[0029] In this embodiment, by threading the screw 5 through the mounting plate 403 and threadedly connecting it to the inside of the connecting plate 1, the mounting plate 403 and the connecting plate 1 can be connected, achieving the effect of connecting the mounting plate 403 and the connecting plate 1.

[0030] As a technical optimization solution of the utility model, the screw 5 is embedded inside the mounting plate 403, and the materials of both the mounting plate 403 and the connecting plate 1 are high-strength steel.

[0031] In this embodiment, after the screw 5 is tightened, the screw 5 will be at the same horizontal height as the mounting plate 403, avoiding the screw 5 protruding from the mounting plate 403 and affecting the vehicle passability. Since both the mounting plate 403 and the connecting plate 1 are made of high-strength steel, the stability of the mounting plate 403 and the connecting plate 1 can be increased, avoiding deformation of the mounting plate 403 and the connecting plate 1, achieving the effect of avoiding deformation of the mounting plate 403 and the connecting plate 1.

[0032] As a technical optimization solution of the utility model, a card slot 8 is opened inside the connecting plate 1, and the sealing strip 2 is clamped between the opposite sides of the two card slots 8. The material of the sealing strip 2 is high-weather resistance rubber.

[0033] In this embodiment, after the connecting plate 1 is post-cast with concrete to connect with the bridge, when the bridge expands and contracts due to heat, the gap between the two connecting plates 1 will change. At this time, the sealing strip 2 made of high-weather resistance rubber will seal the gap between the two connecting plates 1, enabling the two bridges to maintain sealing when there is a large displacement space between them, achieving the effect of facilitating the sealing between the two connecting plates 1.

[0034] As a technical optimization solution of the utility model, corrosion-resistant layers 7 are sprayed on the surfaces of both the connecting plate 1 and the mounting plate 403. The material of the corrosion-resistant layer 7 is fluorocarbon coating.

[0035] In this embodiment, by spraying the corrosion-resistant layer 7 made of fluorocarbon coating material on the surfaces of the mounting plate 403 and the connecting plate 1, the mounting plate 403 and the connecting plate 1 can have the function of corrosion resistance, extending the service life of the mounting plate 403 and the connecting plate 1, achieving the effect of extending the service life of the connecting plate 1 and the mounting plate 403.

[0036] As a technical optimization solution of the utility model, fixed frames 3 are fixedly connected to opposite sides of the two connecting plates 1. The number of the fixed frames 3 is several and they are evenly distributed on the surface of the connecting plate 1.

[0037] In this embodiment: By moving the connecting plate 1 to the beam end positions where two bridges need to be connected, after using an external limiting tool to limit the two connecting plates 1, the fixed frames 3 are connected to the bridges by means of post-cast concrete, so that the connecting plate 1 can be connected to the bridges, achieving the effect of facilitating the connection between the connecting plate 1 and the bridges.

[0038] Working principle: First, move the connecting plate 1 to the beam end positions where two bridges need to be connected. After using an external limiting tool to limit the two connecting plates 1, the fixed frames 3 are connected to the bridges by means of post-cast concrete, so that the connecting plate 1 can be connected to the bridges. Then, pass the screw 5 through the mounting hole 402 and thread it with the inside of the connecting plate 1, so that the mounting plate 403 can be connected to the connecting plate 1. After tightening the screw 5, the screw 5 will be at the same horizontal height as the mounting plate 403, preventing the screw 5 from protruding from the mounting plate 403 and affecting the vehicle passability. At this time, when the bridges expand and contract due to heat, the gap between the two connecting plates 1 will change. At this time, the sealing strip 2 made of high weather resistance rubber will seal the gap between the two connecting plates 1, so that there is a large displacement space between the two bridges. When the vehicle passes over the two mounting plates 403, the high-strength rubber noise reduction frame 401 embedded with elastic steel strips 6 will elastically support the wheels, reducing the noise generated when the wheels pass, avoiding the problem that most of the existing large displacement beam end expansion devices do not have a noise reduction function and will generate a large amount of noise when the vehicle passes through the large displacement beam end expansion device, affecting the urban environment. By spraying a corrosion-resistant layer 7 made of fluorocarbon coating material on the surfaces of the mounting plate 403 and the connecting plate 1, the mounting plate 403 and the connecting plate 1 can have the function of corrosion resistance, extending the service life of the mounting plate 403 and the connecting plate 1.

[0039] The above is only a preferred embodiment of the utility model and is not intended to limit the utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A large displacement beam end telescopic device, comprising two connecting plates (1), characterized in that: A sealing belt (2) is provided between opposite sides of the two connecting plates (1), and a noise reduction mechanism (4) is provided on the top of the connecting plates (1); The noise reduction mechanism (4) comprises a plurality of noise reduction frames (401), a plurality of mounting holes (402) and a mounting plate (403); the side of the noise reduction frame (401) close to the mounting plate (403) is fixedly connected to the mounting plate (403); the mounting holes (402) are provided inside the mounting plate (403); and the bottom of the mounting plate (403) contacts the top of the connecting plate (1).

2. A large displacement beam end telescopic device according to claim 1, characterized in that: The noise reduction frame (401) is made of high-strength rubber, and an elastic steel bar (6) is embedded inside the noise reduction frame (401). The elastic steel bar (6) is fixedly connected to the mounting plate (403) on a side close to the mounting plate (403).

3. The large displacement beam end telescopic device according to claim 1, characterized in that: A screw (5) is provided on the top of the mounting plate (403), and the bottom of the screw (5) passes through the mounting plate (403) and is connected to the internal thread of the connecting plate (1).

4. The large displacement beam end telescopic device according to claim 3, characterized in that: The screws (5) are embedded in the interior of the mounting plate (403); the mounting plate (403) and the connecting plate (1) are both made of high-strength steel.

5. The large displacement beam end telescopic device according to claim 1, characterized in that: A card slot (8) is provided inside the connecting plate (1), and the sealing belt (2) is clamped between two opposite sides of the card slots (8). The material of the sealing belt (2) is highly weather-resistant rubber.

6. The large displacement beam end telescopic device according to claim 1, characterized in that: The surfaces of the connecting plate (1) and the mounting plate (403) are sprayed with a corrosion-resistant layer (7), and the material of the corrosion-resistant layer (7) is a fluorocarbon coating.

7. The large displacement beam end telescopic device according to claim 1, characterized in that: The two connecting plates (1) are fixedly connected to opposite sides thereof with fixing frames (3), and the fixing frames (3) are multiple in number and evenly distributed on the surface of the connecting plates (1).

Images