Cylinder type rail damping device

Abstract

The utility model discloses a barrel-type rail damping device, which relates to the technical field of rail damping and mainly comprises a first connecting part and a second connecting part which are provided with threads and are connected through a two-way sleeve. A piston with a piston ring; the working cylinder barrel is provided with an oil storage chamber; the electric valve device and the oil hole are arranged at the bottom of the working cylinder barrel, the damping level can be automatically adjusted according to the real-time human flow rate condition, it is ensured that the higher damping effect is provided in the peak period, damping is reduced in the low peak period, and therefore the optimal configuration of resources is achieved. The built-in displacement sensor can accurately monitor and feed back the movement amplitude of the piston, so that damping fine adjustment based on the actual vibration condition is achieved, and the accuracy and stability of the vibration reduction effect are ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of track vibration reduction, and particularly relates to a cylindrical track vibration reduction device. Background Technique

[0002] A track refers to a route paved with bar-shaped steel for trains, trams, subways, etc. to run on. With the development of cities and the densification of the rail transit network, it is increasingly difficult to avoid environmental vibration sensitive points in the design of the track alignment or burial depth, and the demand for track engineering vibration reduction measures will further increase. The existing vibration reduction measures are mainly track vibration reduction measures. According to the different positions of the elastic components, the track vibration reduction measures can be divided into four categories: rail vibration control, under-rail vibration reduction, under-sleeper vibration reduction, and under-ballast vibration reduction.

[0003] Track vibration refers to the vibration phenomenon that occurs when a subway train is running. This vibration may be caused by various factors, including track unevenness, train speed, friction between the wheels and the track, etc. When the train passes through the track, it will generate very strong vibrations, which will in turn generate a lot of noise. The strong vibrations are not conducive to the service life of the railway tracks and other issues. The train vibrations may affect the riding experience and comfort of passengers, and may also affect the service life of the train and the track. When the train passes through the track, it will generate very strong vibrations, which will in turn generate a lot of noise. The strong vibrations are not conducive to the service life of the railway tracks and other issues. Therefore, a new type of track vibration reduction device is urgently needed. Summary of the Invention

[0004] The purpose of the embodiment of the utility model is to provide a cylindrical track vibration reduction device, so as to reduce the vibration and noise generated during subway operation by reducing the vibration of the train running track, and extend the service life of the track and the train.

[0005] To solve the above technical problems, the technical solution adopted by the utility model is a cylindrical track vibration reduction device, including a spring and a damper, specifically including:

[0006] A first connection part, the top of which extends into the track concrete sleeper, and the bottom of which is connected to the second connection part;

[0007] A second connection part, the bottom of which is connected to the piston;

[0008] A piston, horizontally arranged in the working cylinder;

[0009] A working cylinder, including an inner wall and an outer wall. The working cylinder is of a cylindrical structure, and a first limiting hole is provided at the center of the top. A spring is sleeved outside the outer wall of the working cylinder;

[0010] A spring, with a force-bearing plate arranged at the top. The force-bearing plate is of a disc structure, and a second limiting hole is provided at the center. The second limiting hole is fixedly connected to the second connection part.

[0011] Further, the first connecting portion and the second connecting portion are rods, and threads are provided at the bottom of the first connecting portion and the top of the second connecting portion, and they are connected by a bidirectional sleeve with left - hand and right - hand threads on the inner wall.

[0012] Further, it further includes a protection cylinder. The protection cylinder is a hollow cylinder, and a third limiting hole is provided at the center of the top. The first limiting hole, the second limiting hole, and the third limiting hole are coaxial. The diameter of the first limiting hole is equal to the diameter of the second connecting portion and is used for limiting the second connecting portion; the diameter of the protection cylinder > the diameter of the force - receiving plate > the diameter of the working cylinder barrel.

[0013] Further, a linear displacement sensor is provided at the top of the piston, and the linear displacement sensor is signal - connected to an external control console.

[0014] Further, between the inner wall and the outer wall of the working cylinder barrel is an oil storage chamber, which is filled with nitrogen and hydraulic oil. An oil hole is provided at the bottom of the inner wall, and the oil hole connects the internal space of the inner wall of the working cylinder barrel and the oil storage chamber. An electric valve device is provided in the oil hole; the electric valve device is signal - connected to an external control console.

[0015] Further, the periphery of the piston is in close contact with the inner wall of the working cylinder barrel, and piston rings are provided on the side wall of the piston.

[0016] The beneficial effects of the present utility model are as follows:

[0017] The core advantage of the present utility model lies in its dynamic damping adjustment ability; through the integrated electric valve device, the system can automatically adjust the damping level according to the real - time pedestrian flow situation, ensuring stronger vibration reduction effects during peak hours and reducing damping during off - peak hours, thereby achieving the optimal allocation of resources. In addition, the high - precision displacement sensor built into the device can accurately monitor and feedback the moving amplitude of the piston, so as to realize the fine adjustment of damping based on the actual vibration situation, ensuring the accuracy and stability of the vibration reduction effect.

[0018] In terms of design, this vibration reduction device pursues the concept of efficient and convenient maintenance. Its structure consists of a small number of streamlined parts, greatly simplifying the installation and disassembly processes and significantly shortening the maintenance time. Especially the use of the left - hand and right - hand thread bidirectional sleeve connection between the second connecting portion and the first connecting portion makes on - site maintenance or replacement fast and simple, effectively improving the usability and management efficiency of the equipment.

[0019] In terms of the application effect, this device can significantly reduce the vibration generated by the track when the subway passes through, effectively suppress the accompanying noise pollution, not only significantly improve the riding experience of passengers, but also indirectly extend the service life of the track and subway vehicles, and reduce the long-term operation cost. Its component design is simple, the production cost is low, it is easy to mass-produce and widely apply, and it is especially suitable for large-scale deployment in the field of subway track vibration reduction, showing extremely high cost performance and market potential.

[0020] To sum up, this cylindrical track vibration reduction device comprehensively improves the operation quality and sustainable development ability of the subway transportation system with its excellent dynamic adaptability, high maintenance convenience, significant vibration and noise reduction effect, and economical manufacturing cost. Brief Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a schematic diagram of the overall structure of the cylindrical track vibration reduction device of the present invention.

[0023] Figure 2 It is a schematic diagram of the first connecting part and the second connecting part of the cylindrical track vibration reduction device of the present invention connected by a positive and negative thread bidirectional sleeve.

[0024] Figure 3 It is a schematic diagram of the structure of the second connecting part, the piston and the linear displacement sensor thereon of the cylindrical track vibration reduction device of the present invention.

[0025] Figure 4 It is a schematic diagram of the structure of the working cylinder of the cylindrical track vibration reduction device of the present invention.

[0026] Figure 5 It is a schematic diagram of the structure of the electric valve of the cylindrical track vibration reduction device of the present invention.

[0027] Figure 6 It is a schematic diagram of the structure of the spring of the cylindrical track vibration reduction device of the present invention.

[0028] Figure 7 It is a schematic diagram of the structure of the force-bearing plate of the cylindrical track vibration reduction device of the present invention.

[0029] Figure 8 It is a schematic diagram of the structure of the protective cylinder of the cylindrical track vibration reduction device of the present invention.

[0030] 1. First connecting part; 2. Second connecting part; 3. Bidirectional sleeve; 4. Piston; 41. Piston ring; 5. Working cylinder; 51. Inner wall; 52. Outer wall; 53. Oil hole; 54. Electric valve device; 55. Oil storage chamber; 56. First limiting hole; 6. Linear displacement sensor; 7. Spring; 8. Force-bearing plate; 81. Second limiting hole; 9. Protection cylinder; 91. Third limiting hole. Specific embodiments

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0032] As Figures 1-8 , this embodiment provides a barrel-type track damping device, including a first connecting part 1, a second connecting part 2, a positive and negative thread bidirectional sleeve 3, a piston 4, a working cylinder 5, a linear displacement sensor 6, a spring 7, a force-bearing plate 8, and a protection cylinder 9.

[0033] As Figure 2 and Figure 3 , in some possible embodiments, the first connecting part 1 and the second connecting part 2 are rods. Among them, the first connecting part 1 extends upward into the track concrete sleeper to transmit the track force and is connected to the second connecting part 2 downward; the second connecting part 2 is connected to the piston 4 downward.

[0034] In some specific embodiments, threads are provided at the bottom of the first connecting part 1 and the top of the second connecting part 2, and they are connected through a bidirectional sleeve 3 with positive and negative threads provided on the inner wall 51.

[0035] In some possible embodiments, a linear displacement sensor 6 is provided at the top of the piston 4 and is signal-connected to an external console. When the sleeper is subjected to the pressure and impact given by the subway, it will drive the first connecting part 1, the second connecting part 2, and the piston 4 to move downward together. At this time, the linear displacement sensor 6 can monitor the displacement of the piston 4, convert the displacement situation into an electrical signal and convey it to the console, and real-time monitor and feedback the moving amplitude of the piston 4, so that the staff can better adjust the damping to ensure the accuracy and stability of the damping effect.

[0036] As Figure 7 , in some possible embodiments, the force-bearing plate 8 is a disc structure, and a second limiting hole 81 is provided at the center of the force-bearing plate 8. As Figure 8, the protection cylinder 9 is a hollow cylinder, and a third limiting hole 91 is provided at the center of the top. Since the tubular track vibration damping device in this embodiment is arranged under the sleeper, the protection cylinder 9 has a sufficiently large space to wrap the piston 4, the working cylinder barrel 5, the spring 7, the force-bearing plate 8, etc. to prevent environmental erosion; such as Figure 4 , the working cylinder barrel 5 is a hollow cylinder, and a first limiting hole 56 is provided at the center of the top; the diameters of the first limiting hole 56 and the third limiting hole 91 are equal to the diameter of the second connecting portion 2 to realize the limitation of the second connecting portion 2, and the second limiting hole 81 is fixedly welded to the second connecting portion 2 to realize the fixation of the force-bearing plate 8 and the second connecting portion 2; the diameter of the protection cylinder 9 > the diameter of the force-bearing plate 8 > the diameter of the working cylinder barrel 5.

[0037] such as Figure 1 , Figure 4 and Figure 5 , in some specific embodiments, the working cylinder barrel 5 includes an inner wall 51 and an outer wall 52. A oil storage chamber 55 is provided between the inner wall 51 and the outer wall 52, which is filled with nitrogen and hydraulic oil. An oil hole 53 is provided at the bottom of the inner wall 51. The oil hole 53 connects the internal space of the inner wall 51 of the working cylinder barrel 5 and the oil storage chamber 55. An electric valve device 54 is provided above the oil hole 53. The electric valve device is signal-connected to an external console; when the subway passes, the first connecting portion 1 connected to the bottom of the sleeper drives the second connecting portion 2 to move downward, and the piston 4 presses the bottom hydraulic oil into the oil storage chamber 55 through the oil hole 53. The number of orifice openings is limited, which can form a throttling damping and play a role in track vibration reduction. Since there is also nitrogen with a certain pressure in the oil storage chamber 55, the presence of nitrogen makes the liquid level height of the hydraulic oil in the oil storage chamber 55 lower than the liquid level height of the hydraulic oil in the inner wall 51 of the working cylinder barrel 5. When the hydraulic oil is pressed into the oil storage chamber 55 through the oil hole 53, the pressure in the oil storage chamber 55 continuously increases, which can also form a resistance to prevent the second connecting portion 2 from moving downward. After the subway passes, the pressure in the oil storage chamber 55 is large enough to press some of the hydraulic oil in the oil storage chamber 55 back into the inner wall 51 through the oil hole 53. During the period with a large flow of people, the external console can close some of the oil holes 53 through the electric valve device 54 to achieve the purpose of increasing the damping. Similarly, during the period with a small flow of people, the oil holes 53 can be opened through the electric valve device 54 to achieve the purpose of reducing the damping. During this period, the linear displacement sensor 6 above the piston 4 continuously transmits the displacement condition of the piston 4 to prevent inappropriate damping adjustment.

[0038] such as Figure 1, in some specific embodiments, the second connecting portion 2 passes through the first limiting hole 56, the second limiting hole 81, and the third limiting hole 91 and extends into the working cylinder 5; the diameter of the piston 4 is the same as the diameter of the inner wall 51 of the working cylinder 5, the periphery of the piston 4 is in close contact with the inner wall 51 of the working cylinder 5, and a piston ring 41 is arranged on the side wall of the piston 4. The piston ring 41 can maintain the seal between the piston 4 and the inner wall 51 of the working cylinder 5, so that the service life of the device is further extended and the maintenance cost is reduced.

[0039] Such as Figure 1 , Figure 7 , in some possible embodiments, the spring 7 is arranged on the outer wall 52 of the working cylinder 5. One end of the spring 7 is in contact with the bottom of the protection cylinder 9, and the other end is in contact with the lower surface of the force-bearing plate 8. When the subway passes, the first connecting portion 1 connecting the sleeper drives the second connecting portion 2 to move downward. Since the second connecting portion 2 is welded to the force-bearing plate 8, it will drive the force-bearing plate 8 to move downward. The upper part of the spring 7 is in contact with the force-bearing plate 8. At this time, the spring 7 will be compressed to provide a force to hinder the downward movement of the second connecting portion 2. After the subway passes, the spring 7 tends to return to its original state, driving the piston rod 4 to move upward. At the same time, due to the relatively large pressure in the oil storage chamber 55, when the hydraulic oil flows back into the inner wall 51 through the oil hole 53, it will promote the upward movement of the second connecting portion 2.

[0040] In summary, the installation and disassembly of the cylindrical track vibration damping device are convenient. It can be quickly disassembled when equipment maintenance is required, and it has the function of adjusting damping. The damping can be adjusted according to the different passenger flow volumes at different time periods. At the same time, the displacement amplitude of the piston 4 can be monitored, which is more conducive to the adjustment of damping. The purpose of reducing the vibration generated by the track when the subway passes, reducing the resulting noise, and extending the service life of the track and the subway train is achieved.

[0041] The above are only the preferred embodiments of the present invention and are not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. A cylindrical rail vibration reduction device, comprising a spring (7) and a damper, characterized in that: Specifically include: The first connecting part (1) has a top extending into the track concrete sleeper and a bottom connected to the second connecting part (2); A second connecting portion (2), the bottom of which is connected to the piston (4); A piston (4) is horizontally arranged in a working cylinder (5); The working cylinder barrel (5) comprises an inner wall (51) and an outer wall (52); the working cylinder barrel (5) is a cylindrical structure, a first limiting hole (56) is arranged at the center of the top, and a spring (7) is arranged on the outer wall (52) of the working cylinder barrel (5); The spring (7) has a force-bearing plate (8) disposed on the top, the force-bearing plate (8) being a disc structure with a second limiting hole (81) disposed at the center, and the second limiting hole (81) being fixedly connected to the second connecting portion (2).

2. A cylindrical rail vibration reduction device according to claim 1, characterized in that: The first connecting part (1) and the second connecting part (2) are rods, the bottom of the first connecting part (1) and the top of the second connecting part (2) are provided with threads, and are connected via a bidirectional sleeve (3) with forward and reverse threads provided on the inner wall (51).

3. The drum track vibration reduction device according to claim 1, characterized in that: The device further comprises a protective tube (9), wherein the protective tube (9) is a hollow column, and a third limiting hole (91) is arranged at the center of the top, wherein the first limiting hole (56), the second limiting hole (81), and the third limiting hole (91) are coaxial, wherein the diameter of the first limiting hole (56) is equal to the diameter of the second connecting portion (2), and is used to limit the position of the second connecting portion (2); the diameter of the protective tube (9) is greater than the diameter of the force-bearing plate (8) and is greater than the diameter of the working cylinder (5).

4. The barrel type rail vibration reduction device according to claim 1, characterized in that: A linear displacement sensor (6) is arranged on the top of the piston (4), and the linear displacement sensor (6) is connected to an external control console signal.

5. The barrel type rail vibration reduction device according to claim 1, characterized in that: An oil storage chamber (55) is provided between the inner wall (51) and the outer wall (52) of the working cylinder barrel (5), and is filled with nitrogen and hydraulic oil. An oil hole (53) is provided at the bottom of the inner wall (51), and the oil hole (53) connects the internal space of the inner wall (51) of the working cylinder barrel (5) and the oil storage chamber (55). The oil hole (53) is provided with an electric valve device (54); the electric valve device (54) is connected to an external control console signal.

6. The barrel type track vibration reduction device according to claim 1, characterized in that: The piston (4) is closely attached to the inner wall (51) of the working cylinder (5) on all sides, and a piston ring (41) is arranged on the side wall of the piston (4).

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