A shock absorbing device for underground rail transportation

Abstract

The utility model discloses a kind of shock absorber for underground rail transit, it is related to rail transit technical field.The utility model includes main body assembly, including steel rail, rubber pad is arranged below the steel rail, sleeper is arranged below the rubber pad.The utility model is through for the permanent deformation of rubber pad long-term extrusion easy generation problem, hydraulic jack can be when rubber pad is flat, drive piston column is ejected by hydraulic oil pressure automatically, continuously push rubber pad, compensate its deformation loss, stabilize the relative position between steel rail and sleeper, avoid the gap due to deformation, eliminate the hidden danger of steel rail impact support from root, by eliminating the gap between steel rail and support, effectively avoid the impact noise when train passes, create more quiet underground rail transit environment.Meanwhile, reduce the fatigue damage of steel rail due to frequent impact, greatly prolong the service life of steel rail, reduce track operation and replacement cost, improve the economy of track system whole life cycle.

Description

Technical Field

[0001] This utility model belongs to the field of rail transit technology, and in particular relates to a shock absorption device for underground rail transit. Background Technology

[0002] With the acceleration of urbanization, underground rail transit, as a high-capacity and high-efficiency public transportation mode, occupies an increasingly important position in the urban transportation system. However, the vibration and noise problems generated during the operation of rail transit have gradually become the focus of people's attention.

[0003] Rubber pads are the most common type of vibration damping material used in underground railways. However, rubber pads are prone to permanent deformation after prolonged compression, causing them to flatten. When the rubber pad is flattened, the relative position between the rail and the rubber pad changes, creating a gap between the rail and the support structure below. This causes the rail to impact the support structure when a train passes over it, producing loud noise. In addition, frequent impacts reduce the service life of the rail. Utility Model Content

[0004] The purpose of this utility model is to provide a shock absorption device for underground rail transit. By combining a hydraulic jack and a pressure sensing device, it solves the problem that the rubber pads in the prior art are prone to permanent deformation after long-term compression, which causes the rails to make loud noise when the train passes. At the same time, frequent impacts will reduce the service life of the rails.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0006] This utility model is a shock absorption device for underground rail transit, including a main component, including a steel rail, a rubber pad is provided under the steel rail, and a sleeper is provided under the rubber pad;

[0007] A shock-absorbing assembly, disposed on the sleeper rail, includes a shock-absorbing component. The shock-absorbing component includes a fixed seat fixed to the sleeper rail, a hydraulic cylinder fixed to the top of the fixed seat, a piston chamber disposed inside the hydraulic cylinder, a piston column disposed inside the piston chamber, and a support pad disposed on the rubber pad.

[0008] The present invention is further configured such that the shock absorption assembly also includes a power component, the power component includes a pump seat fixed to the top of the fixed base, a hydraulic pump is fixed on the pump seat, a support column is fixed on the hydraulic pump, a limit column is provided on the support column, and the support column is rotatably connected to the limit column.

[0009] The present invention is further configured such that a support rod is fixed on the pump base, and a rocking rod is provided on the support rod, and the support rod and the rocking rod are hinged together.

[0010] The present invention is further configured such that a first movable groove is provided on one side of the rocking rod, the limiting post moves within the first movable groove, a second movable groove is provided at the top of the rocking rod, and the supporting post moves within the second movable groove.

[0011] The present invention is further configured such that the shock absorption assembly also includes a transmission component, the transmission component includes an oil tank opened in the hydraulic cylinder, an oil supply pipe is opened at the bottom of the oil tank, a first rectangular groove is opened in the oil supply pipe, and a valve core is arranged in the first rectangular groove.

[0012] The present invention is further configured such that a first threaded hole is provided on one side of the fixed base, a first threaded post is provided in the first threaded hole, and a steel ball is fixed on the top of the first threaded post.

[0013] The present invention is further configured such that the shock absorption component also includes a control component, the control component includes a cylindrical groove formed in the support pad, a sensing column is provided in the cylindrical groove, and a load-bearing column is fixed at the bottom of the sensing column.

[0014] The present invention is further configured such that a second rectangular groove is formed in the support pad, a cylindrical groove is formed at the bottom of the second rectangular groove, the second rectangular groove is connected to the cylindrical groove, and a hydraulic pipe is provided in the cylindrical groove.

[0015] The present invention is further configured such that a second threaded hole is provided in the support pad, a second threaded post is provided in the second threaded hole, and the second threaded hole is connected to the cylindrical groove.

[0016] The present invention is further configured such that there are two cylindrical grooves and two hydraulic pipes.

[0017] This invention offers the following advantages: Addressing the issue of permanent deformation caused by prolonged compression of rubber pads, the hydraulic jack automatically pushes out a piston rod using hydraulic pressure when the rubber pad flattens, continuously supporting the pad, compensating for deformation loss, stabilizing the relative position between the rail and the sleeper, and preventing gaps caused by deformation. This eliminates the potential for rail impacts on supports at the source. By eliminating gaps between the rail and supports, it effectively reduces impact noise from passing trains, creating a quieter underground rail transit environment. Simultaneously, it reduces fatigue damage to the rails caused by frequent impacts, significantly extending rail service life, lowering track maintenance and replacement costs, and improving the overall economic efficiency of the track system throughout its lifecycle. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0019] Figure 1 This is a three-dimensional diagram of a shock-absorbing device for underground rail transit.

[0020] Figure 2 This is a front view of a shock-absorbing device for underground rail transit.

[0021] Figure 3 This is a cross-sectional view of a shock-absorbing component of a shock-absorbing device for underground rail transit.

[0022] Figure 4 This is a cross-sectional view of the control component of a shock absorption device for underground rail transit.

[0023] Figure 5 This is a side view of a shock-absorbing device for underground rail transit. Detailed Implementation

[0024] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Example 1

[0026] Please see Figures 1-3 This utility model is a shock absorption device for underground rail transit, comprising:

[0027] The main component 100 includes a rail 101, a rubber pad 102 is provided below the rail 101, and a sleeper rail 103 is provided below the rubber pad 102. When a train passes over the rail 101, the wheel load causes the rail 101 to be displaced downward under pressure, directly squeezing the rubber pad 102 below. Under the long-term pressure of the rail 101, the rubber pad 102 undergoes irreversible deformation.

[0028] A shock-absorbing assembly 200, mounted on the sleeper rail 103, includes a shock absorber 201. The shock absorber 201 includes a mounting base 2011 fixed to the sleeper rail 103. A hydraulic cylinder 2012 is fixed to the top of the mounting base 2011. A piston chamber 2013 is provided inside the hydraulic cylinder 2012, and a piston rod 2014 is provided inside the piston chamber 2013. A rubber pad 102 is fixed to the top of the piston rod 2014. A support pad 2015 is provided on the rubber pad 102, and another rubber pad 102 is provided on top of the support pad 2015. When the force of the train load is transmitted to the rail 101, the rail 101 presses down on the rubber pad 102, causing the rubber pad 102 to deform. The deformation of rail 102 will change the relative position between rail 101 and rubber pad 102, creating a gap between rail 101 and the supporting rubber pad 102 below. At this time, piston column 2014, with the static support force of hydraulic oil in hydraulic cylinder 2012, continuously pushes against rubber pad 102, constructing a vertical foundation support for rail 101. After the rubber pad 102 deforms, the hydraulic oil pressure drives piston column 2014 to push out, continuously pushing against rubber pad 102, automatically compensating for its thickness loss, preventing track settlement due to insufficient support, maintaining the smoothness of the rail surface, reducing bumps and wheel-rail impact when the train passes, and improving driving comfort and track system safety.

[0029] The shock absorption assembly 200 also includes a power component 202, which includes a pump base 2021 fixed to the top of the fixed base 2011, a hydraulic pump 2022 fixed on the pump base 2021, a support column 2023 fixed on the hydraulic pump 2022, a limit column 2024 provided on the support column 2023, and the support column 2023 and the limit column 2024 are connected by a rotating shaft.

[0030] When the rubber pad 102 is deformed and flattened by the pressure of the rail 101, a gap is created between the rubber pad 102 and the rail 101. This causes the rail to impact the support below when the train passes over it. At this time, the hydraulic pump 2022 can be manually operated to raise the piston column 2014 through hydraulic oil. At the same time, the rubber pad 102 will also be raised. This can solve the noise problem caused by the rail 101 colliding with the rubber pad 102 due to the deformation of the rubber pad 102, thereby solving the problem of the shortened service life of the rail 101.

[0031] A support rod 2025 is fixed on the pump base 2021, and a rocking rod 2026 is provided on the support rod 2025. The support rod 2025 and the rocking rod 2026 are hinged. When it is necessary to raise the piston column 2014, the rocking rod 2026 can be rocked up and down. While rocking the rocking rod 2026, the support rod 2025 will also move the hydraulic pump 2022 up and down. The pressure generated by the up and down movement of the hydraulic pump 2022 can drive the hydraulic oil to operate.

[0032] A first movable groove 2026-1 is provided on one side of the rocker arm 2026, and a limiting post 2024 moves within the first movable groove 2026-1. A second movable groove 2026-2 is provided on the top of the rocker arm 2026, and a support post 2023 moves within the second movable groove 2026-2. By opening the first movable groove 2026-1, the rocker arm 2026 drives the limiting post 2024 to operate while also restricting the movement trajectory of the limiting post 2024, thus preventing the rocker arm 2026 from moving randomly during operation. The second movable groove 2026-2 on the top of the rocker arm 2026 provides movement space for the support post 2023.

[0033] The shock absorption assembly 200 also includes a transmission component 203, which includes an oil tank 2031 located inside the hydraulic cylinder 2012. An oil supply pipe 2032 is located at the bottom of the oil tank 2031. A first rectangular groove 2032-1 is located inside the oil supply pipe 2032. A valve core 2033 is installed inside the first rectangular groove 2032-1. There are two first rectangular grooves 2032-1 and two valve cores 2033. One side of the first rectangular groove 2032-1 is connected to the rectangular oil supply pipe 2032, and the other side is connected to the cylindrical oil supply pipe 2032, so as to prevent the hydraulic oil from flowing back during transmission. When the valve core 2033 is subjected to the pressure of the hydraulic oil, it will move left and right. When the rocker arm 2026 is swung in conjunction, it drives the hydraulic pump 2022 to operate through the support column 2023.

[0034] The hydraulic pump 2022 generates pressure to drive the hydraulic oil in the oil tank 2031 to flow to the piston chamber 2013 through the oil pipe 2032, pushing the piston rod 2014 out to support the rubber pad 102.

[0035] A first threaded hole 2011-1 is provided on one side of the fixed base 2011. A first threaded post 2034 is provided in the first threaded hole 2011-1. A steel ball 2035 is fixed on the top of the first threaded post 2034. The first threaded hole 2011-1 and the first threaded post 2034 are threadedly engaged. The steel ball 2035 fixed on the top of the first threaded post 2034 is used to block the oil supply pipe 2032 to maintain constant pressure. When the first threaded post 2034 rotates outward, it will drive the steel ball 2035 to move outward. When the steel ball 2035 moves away from the oil supply pipe 2032, the pressure of the hydraulic oil will decrease accordingly. The hydraulic oil entering the piston chamber 2013 will also flow back to the outer oil tank 2031. The piston post 2014 will then descend. When the rubber gasket 102 needs to be replaced, it can quickly release pressure, which is more time-saving and labor-saving.

[0036] Example 2

[0037] Please see Figures 3-5Based on Embodiment 1, the shock absorption assembly 200 further includes a control component 204. The control component 204 includes a cylindrical groove 2015-1 formed within the support pad 2015. A sensing column 2041 is disposed within the cylindrical groove 2015-1, and a load-bearing column 2042 is fixed to the bottom of the sensing column 2041. The connection between the sensing column 2041 and the cylindrical groove 2015-1 is sealed. The cylindrical groove 2015-1 is filled with hydraulic oil. When the piston column 2014 pushes the flattened rubber pad 102 upward until it is in close contact with the rail 101, the sensing column 2041 will sense the pressure and move into the cylindrical groove 2015-1. The load-bearing column 2042 fixed to the bottom of the sensing column 2041 will also move downward. When the load-bearing column 2042 moves a certain distance, the hydraulic lifting mechanism will stop working. The piston column 2014 will not continue to move upward, as shown in the figure. At this time, the rubber pad 102 provides sufficient support for the rail 101. The sensing column 2041 is completely compressed into the support pad 2015. At this time, the sensing column 2041 cuts off the oil circuit by driving the load-bearing column 2042, so that the hydraulic lifting mechanism stops driving the support pad 2015 to rise. Since the amount of hydraulic oil in the cylindrical groove 2015-1 is constant and the size of the sensing column 2041 remains unchanged, the pressure of the sensing column 2041 being completely pressed into the support pad 2015 is constant. That is, the support force of the support pad 2015 and the rubber pad 102 on the rail 101 is constant. Therefore, it is not necessary for the staff to detect this support force, which improves work efficiency and avoids the bulging deformation caused by the rail 101 being supported by excessive support force.

[0038] The support pad 2015 has a second rectangular groove 2015-2. The bottom of the load-bearing column 2042 is connected to the second rectangular groove 2015-2. The bottom of the second rectangular groove 2015-2 has a cylindrical groove 2015-3. The second rectangular groove 2015-2 and the cylindrical groove 2015-3 are connected. A hydraulic pipe 2043 is installed in the cylindrical groove 2015-3. There are two cylindrical grooves 2015-3 and two hydraulic pipes 2043. The ends of the two hydraulic pipes 2043 are fixed in the two cylindrical grooves 2015-3 respectively, and the other end is fixed in the oil supply pipe 2032. When the load-bearing column 2042 moves to the bottom of the second rectangular groove 2015-2, it will block the connection between the two hydraulic pipes 2043, and will not be able to continue to supply hydraulic oil. The hydraulic pump 2022 will not be able to continue to make the piston column 2014 move upward. The hydraulic pipe 2043 blocking mechanism can prevent the hydraulic pump 2022 from continuously pressurizing and causing the components to overload.

[0039] The support pad 2015 has a second threaded hole 2015-4, and a second threaded post 2044 is installed in the second threaded hole 2015-4. The second threaded hole 2015-4 and the second threaded post 2044 are threadedly connected. One end of the second threaded post 2044 has a slot for inserting a hex wrench, which facilitates the use of tools to move the position of the second threaded post 2044. The second threaded hole 2015-4 is connected to the cylindrical groove 2015-1. By moving the position of the second threaded post 2044, the amount of hydraulic oil in the cylindrical groove 2015-1 can be changed, thereby changing the pressure required for the sensing post 2041 to move to the current state, so as to adapt to the support force required by different rails 101.

[0040] The working principle of this utility model is as follows: When the train passes over the rail 101, the rubber pad 102 undergoes irreversible deformation due to pressure, resulting in a gap between the rail 101 and the sleeper rail 103. This allows the rocker arm 2026 to be rocked up and down. The hinge structure between the rocker arm and the support rod 2025 drives the hydraulic pump 2022. At this time, the support column 2023 slides in the second movable groove 2026-2 of the rocker arm 2026, and the limiting column 2024 slides in the first movable groove 2026-1, ensuring stable transmission. The hydraulic pump 2022 pumps hydraulic oil from the oil tank 2031 into the piston chamber 2013 through the oil supply pipe 2032. The valve core 2033 in the oil supply pipe opens the passage under the pressure of the oil, while the steel ball 2035 is initially fixed by the first threaded post 2034, keeping the oil supply pipe 2032 closed at that point. Hydraulic oil pushes the piston rod 2014 upward to lift the rubber pad 102, and the support pad 2015 is simultaneously subjected to force, so that the topmost rubber pad 102 supports the rail 101. At this time, the sensing rod 2041 is pressed in the cylindrical groove 2015-1 and moves into the support pad 2015, driving the bottom load-bearing rod 2042 to move into the second rectangular groove 2015-2.

[0041] When the load-bearing column 2042 moves to the bottom of the second rectangular groove 2015-2, it just blocks the hydraulic pipe 2043 in the cylindrical groove 2015-3, the hydraulic oil stops being delivered, the piston column 2014 stops rising, and the support force compensation for the rail 101 is completed.

[0042] If it is necessary to adjust the support force on the rail 101, the second threaded column 2044 can be rotated to change its depth in the second threaded hole 2015-4 through thread engagement, thereby adjusting the support force of the sensing column 2041.

[0043] When the rubber gasket 102 needs to be replaced, the first threaded column 2034 is rotated to move the steel ball 2035 away from the oil supply pipe 2032, and the hydraulic oil flows back to the oil tank 2031 through the oil supply pipe. The piston column 2014 descends to achieve rapid pressure relief.

[0044] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A vibration damping device for underground rail transit, characterized in that: include, The main component (100) includes a rail (101), a rubber pad (102) is provided below the rail (101), and a sleeper rail (103) is provided below the rubber pad (102). A shock-absorbing assembly (200), disposed on the sleeper rail (103), includes a shock-absorbing component (201). The shock-absorbing component (201) includes a fixing seat (2011) fixed on the sleeper rail (103). A hydraulic cylinder (2012) is fixed to the top of the fixing seat (2011). A piston chamber (2013) is provided inside the hydraulic cylinder (2012). A piston column (2014) is provided inside the piston chamber (2013). A support pad (2015) is provided on the rubber pad (102). 15); The shock absorption assembly (200) further includes a power component (202), the power component (202) includes a pump seat (2021) fixed to the top of the fixed base (2011), a hydraulic pump (2022) fixed on the pump seat (2021), a support column (2023) fixed on the hydraulic pump (2022), a limit column (2024) provided on the support column (2023), and the support column (2023) and the limit column (2024) are connected by a rotating shaft; The shock absorption assembly (200) also includes a transmission component (203), which includes an oil tank (2031) opened in the hydraulic cylinder (2012), an oil supply pipe (2032) opened at the bottom of the oil tank (2031), a first rectangular groove (2032-1) opened in the oil supply pipe (2032), and a valve core (2033) is provided in the first rectangular groove (2032-1).

2. The vibration damping device for underground rail transit as described in claim 1, characterized in that: A support rod (2025) is fixed on the pump base (2021), and a rocking rod (2026) is provided on the support rod (2025). The support rod (2025) and the rocking rod (2026) are hinged together.

3. The vibration damping device for underground rail transit as described in claim 2, characterized in that: The rocker arm (2026) has a first movable groove (2026-1) on one side, and the limiting post (2024) moves within the first movable groove (2026-1). The rocker arm (2026) has a second movable groove (2026-2) on the top, and the support post (2023) moves within the second movable groove (2026-2).

4. The vibration damping device for underground rail transit as described in claim 3, characterized in that: The fixing base (2011) has a first threaded hole (2011-1) on one side, and a first threaded post (2034) is provided in the first threaded hole (2011-1). A steel ball (2035) is fixed on the top of the first threaded post (2034).

5. The vibration damping device for underground rail transit as described in claim 4, characterized in that: The shock absorption assembly (200) also includes a control component (204), which includes a cylindrical groove (2015-1) opened in the support pad (2015), a sensing column (2041) is provided in the cylindrical groove (2015-1), and a load-bearing column (2042) is fixed at the bottom of the sensing column (2041).

6. The vibration damping device for underground rail transit as described in claim 5, characterized in that: The support pad (2015) has a second rectangular groove (2015-2), and a cylindrical groove (2015-3) is formed at the bottom of the second rectangular groove (2015-2). The second rectangular groove (2015-2) is connected to the cylindrical groove (2015-3), and a hydraulic pipe (2043) is provided in the cylindrical groove (2015-3).

7. The vibration damping device for underground rail transit as described in claim 6, characterized in that: The support pad (2015) has a second threaded hole (2015-4), and a second threaded post (2044) is provided in the second threaded hole (2015-4). The second threaded hole (2015-4) is connected to the cylindrical groove (2015-1).

8. The vibration damping device for underground rail transit as described in claim 7, characterized in that: There are two cylindrical grooves (2015-3) and two hydraulic pipes (2043).

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