Vibration and noise reduction structure for subway track

Abstract

The utility model relates to the technical field of metro tracks, in particular to a vibration and noise reduction structure for metro tracks, which comprises a bearing frame, the top end of the bearing frame is fixedly connected with a bearing pad, and two connecting holes are arranged in the bearing frame. When the rail is used, the connecting bolts can penetrate through the round holes in the bearing pad to connect the rail body with the bearing frame, so that the rail body is in close contact with the bearing pad, pressure is exerted on the shock absorber body and the shock absorption spring through the bearing frame in the subway running process, and therefore the bearing frame descends in the two shock absorption frames, and the shock absorption effect is achieved. At the moment, the noise reduction pad can penetrate through a gap between the two vibration reduction frames to be in contact with the ground along with descending of the bearing frame, so that vibration of the track main body is reduced through cooperation of the bearing frame, the vibration damper main body, the vibration reduction springs and the vibration reduction frames in the running process of the subway; and noise generated during subway running can be reduced through cooperation between the bearing pad and the noise reduction pad, and the effect of improving vibration and noise reduction of the device is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to subway track technical field, concretely is a subway track vibration and noise reduction structure for subway track. BACKGROUND

[0002] In the currently built subway ballastless track, the sleeper (long sleeper or short sleeper) embedded type cast-in-situ reinforced concrete monolithic track bed is widely used, the vibration and noise caused by train operation are large, when passing through the residential area and commercial area section, the daily life and work of people are affected, and it is urgent to solve the vibration and noise problem caused by the existing subway operation.

[0003] However, the existing vibration and noise reduction structure has weak noise reduction function, and it is difficult to absorb the noise generated between the subway and the track during the subway driving, so that the noise is too large, causing noise pollution, not only that the existing vibration and noise reduction structure has poor practical effect, and under the condition that the maintenance is not timely, the bolts on the track may be loose due to long time use, thereby there is certain safety hazard. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a subway track vibration and noise reduction structure to solve the problems in the background art.

[0005] In order to achieve the above purpose, the utility model provides the following technical scheme:

[0006] A subway track vibration and noise reduction structure, comprising a bearing frame, the top end of the bearing frame is fixedly connected with a bearing pad, two connecting holes are formed in the inside of the bearing frame, connecting bolts are threadedly connected in the inside of the connecting holes, track bodies are threadedly connected to the surface of the connecting bolts, a noise reduction pad is fixedly connected to the middle of the bottom end of the bearing frame, sound absorbing holes are formed in one side of the noise reduction pad, a vibration reduction assembly is fixedly connected to the bottom end of the bearing frame, and a plurality of fixing assemblies are fixedly connected to one side of the vibration reduction assembly.

[0007] Preferably, the vibration reduction assembly comprises a vibration damper body, the top end of the vibration damper body is fixedly connected to one side of the bottom end of the bearing frame, a vibration damper spring is sleeved on the surface of the vibration damper body, and a vibration reduction frame is fixedly connected to the bottom end of the vibration damper body.

[0008] Preferably, the fixing assembly comprises a fixing block, one end of the fixing block is fixedly connected to one side of the vibration reduction frame, a threaded hole is formed in the top end of the fixing block, a fixing bolt is threadedly connected in the inside of the threaded hole, a fixing cap is fixedly connected to the top end of the fixing bolt, and a fixing spring is fixedly connected to the bottom end of the fixing cap.

[0009] Preferably, the top end of the bearing pad is provided with two round holes, and the inside of the round holes is slidingly connected to the bottom end of the connecting bolt surface.

[0010] Preferably, the inner side wall of the damping frame is movably connected to one side of the bearing frame.

[0011] Preferably, the bottom end of the fixing spring is fixedly connected with a rubber pad, and the bottom end of the rubber pad is overlapped with the edge of the top end of the fixing block.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] The damping and noise reduction structure for subway track is provided with the connecting bolt, the bearing pad, the bearing frame, the noise reduction pad and the damping assembly, the connecting bolt passes through the round holes in the bearing pad to connect the track main body and the bearing frame when in use, the track main body is in close contact with the bearing pad, the bearing frame is lowered in the two damping frames when the subway runs and causes pressure to the damper main body and the damping spring, the noise reduction pad contacts the ground through the gap in the two damping frames when the bearing frame is lowered, the vibration of the track main body is reduced by cooperation between the bearing frame, the damper main body, the damping spring and the damping frame when the subway runs, the noise generated when the subway runs is reduced by cooperation between the bearing pad and the noise reduction pad, and the damping and noise reduction effect of the device is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the overall schematic view of the utility model;

[0015] Figure 2 It is the fixing assembly schematic view of the utility model;

[0016] Figure 3 It is the damping assembly schematic view of the utility model;

[0017] Figure 4 It is the local split schematic view of the utility model.

[0018] In the figure: 1, bearing frame; 2, bearing pad; 3, round hole; 4, connecting bolt; 5, track body; 6, noise reduction pad; 7, sound absorption hole; 8, damping assembly; 801, damper body; 802, damping spring; 803, damping frame; 9, fixing assembly; 901, fixing block; 902, threaded hole; 903, fixing bolt; 904, fixing cap; 905, fixing spring. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0020] Please refer to Figures 1-4 The utility model provides a technical scheme:

[0021] A subway track damping and noise reduction structure, including bearing frame 1, bearing frame 1's top fixedly connected with bearing pad 2, bearing frame 1's inside is provided with two connecting holes, connecting hole inside is all screw thread connection has connecting bolt 4, connecting bolt 4 surface's middle screw thread connection has track body 5, bearing frame 1 bottom's middle fixedly connected with noise reduction pad 6, and the side of noise reduction pad 6 is provided with sound absorption hole 7, and the bottom of bearing frame 1 is fixedly connected with damping assembly 8, and the side of damping assembly 8 is fixedly connected with a plurality of fixed assemblies 9;

[0022] Specifically, the track body 5 is connected with the bearing frame 1 by the connecting bolt 4 penetrating the round hole 3 on the bearing pad 2, so that the track body 5 is in close contact with the bearing pad 2, and the noise generated during subway running can be reduced by the cooperation between the bearing pad 2 and the noise reduction pad 6.

[0023] It can be understood that the bearing pad 2 wraps the track as much as possible without affecting the normal operation of the subway under the cooperation of the bearing frame 1, and then the noise reduction pad 6 contacts the ground during the running of the subway, and the noise is absorbed by the cooperation between the bearing pad 2 and the noise reduction pad 6.

[0024] In this embodiment, preferably, the damping assembly 8 includes a damper body 801, the top end of the damper body 801 is fixedly connected to one side of the bottom end of the bearing frame 1, the surface of the damper body 801 is sleeved with a damping spring 802, and the bottom end of the damper body 801 is fixedly connected with a damping frame 803.

[0025] Specifically, when the subway is running, the pressure is applied to the damper body 801 and the damping spring 802 by the bearing frame 1, so that the bearing frame 1 is lowered in the two damping frames 803, at this time the noise reduction pad 6 is lowered with the bearing frame 1 and contacts the ground through the gap in the two damping frames 803, so that the vibration of the track body 5 is reduced by the cooperation between the bearing frame 1, the damper body 801, the damping spring 802 and the damping frame 803 during the running of the subway.

[0026] It can be understood that the position of the bearing frame 1 is limited by the two damping frames 803, and then the vibration of the track body 5 is reduced by the cooperation between the damper body 801 and the damping spring 802 below the bearing frame 1.

[0027] In this embodiment, preferably, the fixing assembly 9 comprises a fixing block 901, one end of the fixing block 901 is fixedly connected to one side of the damping frame 803, a threaded hole 902 is formed in the top end of the fixing block 901, a fixing bolt 903 is threadedly connected in the threaded hole 902, a fixing cap 904 is fixedly connected to the top end of the fixing bolt 903, and a fixing spring 905 is fixedly connected to the bottom end of the fixing cap 904.

[0028] Specifically, the multiple fixing bolts 903 below the fixing cap 904 are connected to the multiple fixing blocks 901 on the two damping frames 803 and the ground by using a tool, at this time the fixing spring 905 is deformed while closely adhering to the fixing block 901 as the fixing cap 904 is lowered, and the rebound force generated by the fixing spring 905 is applied to the fixing block 901 and the fixing cap 904 after installation, so as to increase the friction between the fixing bolt 903 and the fixing block 901.

[0029] It can be understood that the damping frame 803 is fixed at a suitable position by the fixing bolt 903, and the rebound force generated by the compressed fixing spring 905 is applied to the fixing block 901 and the fixing cap 904, so as to increase the friction between the fixing bolt 903 and the fixing block 901 and delay the time of loosening of the fixing bolt 903.

[0030] In this embodiment, preferably, the top end of the bearing pad 2 is provided with two round holes 3, and the inside of the round hole 3 is slidably connected to the bottom end of the surface of the connecting bolt 4.

[0031] In this embodiment, preferably, the inner side wall of the damping frame 803 is movably connected to one side of the bearing frame 1.

[0032] In this embodiment, preferably, the bottom end of the fixing spring 905 is fixedly connected to a rubber pad, and the bottom end of the rubber pad is overlapped with the edge of the top end of the fixing block 901.

[0033] The subway track vibration and noise reduction structure of the embodiment is used, precise instruments are used to measure the installation position of the vibration reduction frame 803, then tools are used to connect the plurality of fixing bolts 903 under the fixing cap 904 and the plurality of fixing blocks 901 on the two vibration reduction frames 803 with the ground, at this time, the fixing spring 905 is deformed while closely adhering to the fixing block 901 when the fixing cap 904 is lowered, the rebound force generated by the fixing spring 905 is applied to the fixing block 901 and the fixing cap 904 after installation, thereby increasing the friction between the fixing bolt 903 and the fixing block 901, then the connecting bolt 4 is used to pass through the round hole 3 on the bearing pad 2 to connect the track body 5 with the bearing frame 1, the track body 5 is in close contact with the bearing pad 2, when the subway runs, the bearing frame 1 causes pressure to the vibration damper body 801 and the vibration spring 802, so that the bearing frame 1 is lowered in the two vibration reduction frames 803, at this time, the noise reduction pad 6 is lowered with the bearing frame 1 and contacts with the ground through the gap in the two vibration reduction frames 803, so that the subway uses the cooperation between the bearing frame 1, the vibration damper body 801, the vibration spring 802 and the vibration reduction frame 803 to reduce the vibration of the track body 5, and uses the cooperation between the bearing pad 2 and the noise reduction pad 6 to reduce the noise generated when the subway runs.

[0034] The basic principle, main features and advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above embodiments, the above embodiments and the description in the specification are only preferred examples of the utility model, and are not used to limit the utility model, various changes and improvements of the utility model can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The protection scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A subway track vibration and noise reduction structure, characterized by, The utility model provides a bearing frame (1), the top of bearing frame (1) is fixedly connected with bearing pad (2), the inside of bearing frame (1) is equipped with two connecting holes, the inside of connecting hole is all threadedly connected with connecting bolt (4), the surface middle part of connecting bolt (4) is threadedly connected with track main part (5), the bottom of bearing frame (1) is fixedly connected with the middle part of noise reduction pad (6), the side of noise reduction pad (6) is equipped with sound absorption hole (7), the bottom of bearing frame (1) is fixedly connected with damping assembly (8), the side of damping assembly (8) is fixedly connected with a plurality of fixed components (9).

2. The structure for damping and noise reduction of a subway track according to claim 1, characterized in that: The damping assembly (8) includes a damper body (801), the top of the damper body (801) is fixedly connected to one side of the bottom of the bearing frame (1), the surface of the damper body (801) is sleeved with a damping spring (802), and the bottom of the damper body (801) is fixedly connected with a damping frame (803).

3. The structure for damping and noise reduction of a subway track according to claim 1, characterized in that: The fixed component (9) includes a fixed block (901), one end of the fixed block (901) is fixedly connected to one side of the damping frame (803), the top of the fixed block (901) is provided with a threaded hole (902), the threaded hole (902) is threadedly connected with a fixed bolt (903) inside, the top of the fixed bolt (903) is fixedly connected with a fixed cap (904), and the bottom of the fixed cap (904) is fixedly connected with a fixed spring (905).

4. The structure for damping and noise reduction of a subway track according to claim 1, characterized in that: The top of the bearing pad (2) is provided with two round holes (3), and the inside of the round hole (3) is slidably connected to the bottom of the surface of the connecting bolt (4).

5. The structure for damping and noise reduction of a subway track according to claim 2, wherein: The inner side wall of the damping frame (803) is movably connected to one side of the bearing frame (1).

6. The structure for damping and noise reduction of a subway track according to claim 3, wherein: The bottom of the fixed spring (905) is fixedly connected with a rubber pad, and the bottom of the rubber pad is overlapped with the edge of the top of the fixed block (901).

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