阅读说明：本技术 外接式隧道空气减振器 (External tunnel air damper ) 是由 王大将 李玉辉 于 2021-08-27 设计创作，主要内容包括：本发明涉及隧道工程领域,具体公开了外接式隧道空气减振器,包括外接板和内接板,所述外接板与内接板连接,所述内接板设置在隧道的内壁上,所述外接板位于隧道外；所述外接板中设置有若干缓冲槽,所述缓冲槽内设置有第一活塞装置,第一活塞装置包括第一活塞柱和第一推杆,所述第一推杆设置在第一活塞柱的上端,第一推杆上设置有连动装置,所述内接板上设置有若干第二活塞装置,第二活塞装置包括第二活塞柱和第二推杆,第二推杆设置在第二活塞柱的上端,所述连动装置能够带动第二推杆向上移动。本发明的目的在于解决高速列车进入隧道时产生活塞效应的技术问题。(The invention relates to the field of tunnel engineering, and particularly discloses an external tunnel air damper, which comprises an external connecting plate and an internal connecting plate, wherein the external connecting plate is connected with the internal connecting plate, the internal connecting plate is arranged on the inner wall of a tunnel, and the external connecting plate is positioned outside the tunnel; the outer connecting plate is provided with a plurality of buffer grooves, first piston devices are arranged in the buffer grooves and comprise first piston columns and first push rods, the first push rods are arranged at the upper ends of the first piston columns, linkage devices are arranged on the first push rods, a plurality of second piston devices are arranged on the inner connecting plate and comprise second piston columns and second push rods, the second push rods are arranged at the upper ends of the second piston columns, and the linkage devices can drive the second push rods to move upwards. The invention aims to solve the technical problem that a piston effect is generated when a high-speed train enters a tunnel.)

1. The utility model provides an external tunnel air damper which characterized in that: the tunnel comprises an outer connecting plate and an inner connecting plate, wherein the outer connecting plate is connected with the inner connecting plate, the inner connecting plate is arranged on the inner wall of the tunnel, and the outer connecting plate is positioned outside the tunnel; the outer connecting plate is provided with a plurality of buffer grooves, first piston devices are arranged in the buffer grooves and comprise first piston columns and first push rods, the first push rods are arranged at the upper ends of the first piston columns, linkage devices are arranged on the first push rods, a plurality of second piston devices are arranged on the inner connecting plate and comprise second piston columns and second push rods, the second push rods are arranged at the upper ends of the second piston columns, and the linkage devices can drive the second push rods to move upwards.

2. The circumscribed tunnel air damper of claim 1, wherein: the first piston device further comprises a first piston cylinder and a first spring, the first piston column is arranged in the first piston cylinder in a sliding sealing mode, two ends of the first spring are connected with the upper end of the first piston column and the upper end of the inner wall of the first piston cylinder respectively, a first through hole is formed in the upper end of the first piston cylinder, and the first push rod can penetrate through the first through hole.

3. The circumscribed tunnel air damper of claim 2, wherein: a plurality of columnar grooves are formed in the inner wall of the tunnel, and the second piston device is embedded into the columnar grooves.

4. The circumscribed tunnel air damper of claim 3, wherein: the second piston device further comprises a second piston cylinder and a second spring, the second piston column is arranged in the second piston cylinder in a sliding sealing mode, two ends of the second spring are connected with the upper end of the second piston column and the upper end of the inner wall of the second piston cylinder respectively, a second through hole is formed in the upper end of the second piston cylinder, and the second push rod can penetrate through the second through hole.

5. The circumscribed tunnel air damper of claim 4, wherein: the linkage device comprises a linkage space, a plurality of reversing pulleys and a transmission chain, the linkage space is positioned in the inner connecting plate and the outer connecting plate, the plurality of reversing pulleys are arranged between the first push rod and the second push rod, and the transmission chain is used for transmitting the power of the first piston device to the second piston device.

6. The circumscribed tunnel air damper of claim 5, wherein: the second piston cylinder and the inner connecting plate are integrally formed, a ventilation cavity is formed in the inner wall of the second piston cylinder and communicated with the linkage space, and the transmission chain penetrates through the ventilation cavity.

7. The circumscribed tunnel air damper of claim 6, wherein: and the linkage space is provided with an air outlet.

8. The circumscribed tunnel air damper of claim 7, wherein: a plurality of pressure reducing holes are formed in the inner wall of the first piston cylinder, and a spongy cushion is arranged on the lower portion of the first piston column.

Technical Field

The invention relates to the field of tunnel engineering, and particularly discloses an external tunnel air damper.

Background

The tunnel is an engineering building which is built in a mountain and the ground and used for the same journey of transportation vehicles such as trains, motor cars, high-speed railways and the like, and the tunnel is generally designed to be small due to the high construction cost, so that two trains can move back and forth to the same journey. Along with the development of science and technology, high-speed vehicles such as motor cars, high-speed rails and the like are produced, when the motor cars and the high-speed rails enter a tunnel, the motor cars and the high-speed rails can generate instantaneous earthquake motion, the phenomenon is called as a piston effect, and the reason for generating the piston effect is as follows: when no train is in the tunnel, the volume of air in the tunnel is constant, when the train enters the tunnel rapidly, the train extrudes the air outwards instantly, the air is bounced to the inner wall of the tunnel to generate air waves, and the air waves rebound to the train again to cause the train to vibrate. At present, the running speed of a bullet train, a high-speed railway and the like is generally 200-300km/h, although obvious vibration can be generated when the bullet train, the high-speed railway and the like enter a tunnel, the vibration amplitude is general, and the potential safety hazard to the running of the train can not be caused, but with the further development of science and technology, the speed of the train can reach 600km/h, and then the train enters the tunnel, the generated vibration is large, so that the safety accident can be caused, and the problem of the piston effect needs to be solved at present.

Disclosure of Invention

In view of this, the present invention provides an external tunnel air damper to solve the technical problem of piston effect generated when a high-speed train enters a tunnel.

In order to achieve the purpose, the invention provides the following technical scheme:

an external tunnel air damper comprises an external connecting plate and an internal connecting plate, wherein the external connecting plate is connected with the internal connecting plate, the internal connecting plate is arranged on the inner wall of a tunnel, and the external connecting plate is positioned outside the tunnel; the outer connecting plate is provided with a plurality of buffer grooves, first piston devices are arranged in the buffer grooves and comprise first piston columns and first push rods, the first push rods are arranged at the upper ends of the first piston columns, linkage devices are arranged on the first push rods, a plurality of second piston devices are arranged on the inner connecting plate and comprise second piston columns and second push rods, the second push rods are arranged at the upper ends of the second piston columns, and the linkage devices can drive the second push rods to move upwards. In this scheme, be provided with interior fishplate bar and external plate, wherein external plate is located the tunnel outside, external fishplate bar is equivalent to extend one section distance with the tunnel top, when the train passes through external fishplate bar, the train makes progress during extruded air can enter into first piston device, first piston device's first piston post upwards removes under the effect of air wave, first push rod upwards removes, the interlock is with in the power transmission to second piston device, the second piston rod drives second piston post upwards removal, the air in the second piston post extraction part tunnel, just can not take place great piston effect when the air reduces in the tunnel, the air wave degree that the train arouses in getting into the tunnel is little, the train can not take place vibrations. Meanwhile, the external connecting plate only extends a part of the tunnel, so that the degree of piston effect generated when the train enters the external connecting plate is low, the air wave is only upwards transmitted to the external connecting plate, and the two sides of the train cannot generate the air wave.

Optionally, the first piston device further includes a first piston cylinder and a first spring, the first piston column is slidably and hermetically disposed in the first piston cylinder, two ends of the first spring are respectively connected to the upper end of the first piston column and the upper end of the inner wall of the first piston cylinder, a first through hole is disposed at the upper end of the first piston cylinder, and the first push rod can pass through the first through hole. When the air wave impacts the first piston column, the first piston column moves upwards and drives the first push rod to move upwards to generate power.

Optionally, the inner wall of the tunnel is provided with a plurality of cylindrical grooves, and the second piston device is embedded into the cylindrical grooves. In this scheme, need set up the column groove in tunnel inside, though have certain cost and construction cycle, embedded second piston device can not occupy too much tunnel space, can not cause the potential safety hazard.

Optionally, the second piston device further includes a second piston cylinder and a second spring, the second piston column is slidably and hermetically disposed in the second piston cylinder, two ends of the second spring are respectively connected to the upper end of the second piston column and the upper end of the inner wall of the second piston cylinder, a second through hole is disposed at the upper end of the second piston cylinder, and the second push rod can pass through the second through hole. When power is transmitted to the second push rod, the second push rod drives the second piston column to move upwards, and the second piston column can pump out air in the tunnel.

Optionally, the linkage device includes a linkage space, a plurality of reversing pulleys and a transmission chain, the linkage space is located in the inner connecting plate and the outer connecting plate, the plurality of reversing pulleys are arranged between the first push rod and the second push rod, and the transmission chain is used for transmitting power of the first piston device to the second piston device. The first push rod can pull the transmission chain when moving upwards, and after the transmission chain is changed direction for many times through the reversing pulley, the transmission chain pulls the second push rod upwards again, and the first push rod pulls the second piston column again.

Optionally, the second piston cylinder and the inner connecting plate are integrally formed, a ventilation cavity is formed in the inner wall of the second piston cylinder, the ventilation cavity is communicated with the linkage space, and the transmission chain penetrates through the ventilation cavity. In this scheme, when second piston post upwards removed, the air above the second piston section of thick bamboo just can be followed the cavity of ventilating and discharged to the purpose of drawing air in the tunnel is realized.

Optionally, an air outlet is arranged on the linkage space. The linkage space is provided with an air outlet hole which is convenient for discharging the air at the upper parts of the first piston cylinder and the second piston cylinder.

Optionally, a plurality of pressure relief holes are formed in the inner wall of the first piston cylinder, and a sponge pad is arranged on the lower portion of the first piston column. The sponge cushion is arranged to reduce the energy of the air waves and avoid the quick rebound of the air waves.

The working principle and the beneficial effects of the scheme are as follows:

the outer fishplate bar that sets up in this scheme is equivalent to the upper portion with the tunnel outwards extends, also can produce piston effect when the train gets into outer fishplate bar below, but piston effect degree is lighter, only in order to utilize the kinetic energy that the air wave produced, on transmitting kinetic energy to first piston column, the first piston column upward movement of drive, produce power from this, then through the air in this power suction tunnel, will alleviate the piston effect that produces when the train gets into the tunnel behind the air in the reduction tunnel. The second piston device sucks air in the tunnel after being driven, the air volume reaching the tunnel can be reduced only instantly, and then the air outside the tunnel flows inwards directly.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment;

FIG. 2 is a schematic structural view of the interior of the inner connecting plate and the outer connecting plate;

FIG. 3 is an enlarged view taken at A in FIG. 2;

FIG. 4 is an enlarged view at B in FIG. 2;

FIG. 5 is a longitudinal cross-sectional view of the first piston assembly;

fig. 6 is a longitudinal sectional view of the second piston device.

The drawings are numbered as follows: the tunnel comprises a tunnel 1, an external connecting plate 2, an internal connecting plate 3, a first piston cylinder 4, a second piston cylinder 5, an air outlet 6, a linkage space 7, a second push rod 8, a support frame 9, a reversing pulley 10, a transmission chain 11, a ventilation cavity 12, a first push rod 13, a pressure reducing hole 14, a first piston column 15, a first spring 16, a second piston column 17 and a second spring 18.

Detailed Description

The following is further detailed by way of specific embodiments:

examples

An external tunnel 1 air damper, as shown in fig. 1-6, comprises an external connection plate 2 and an internal connection plate 3, wherein the external connection plate 2 and the internal connection plate 3 are integrally formed, the external connection plate 2 and the internal connection plate 3 are both arc-shaped plate-shaped, the thickness of the external connection plate 2 is larger than that of the internal connection plate 3, and the external connection plate 2 and the internal connection plate 3 are both hollow to form a linkage space 7. Interior fishplate bar 3 is fixed to be set up on the inner wall in tunnel 1, and external board 2 is fixed to be set up outside being located tunnel 1.

Be provided with a plurality of dashpots in outer fishplate bar 2, the dashpot internal fixation is provided with first piston device, first piston device includes first piston post 15, first push rod 13, first piston cylinder 4 and first spring 16, first piston cylinder 4 is fixed to be set up in the dashpot, first piston post 15 sliding seal sets up in first piston cylinder 4, first spring 16's both ends respectively with the upper end of first piston post 15 and the inner wall upper end fixed connection of first piston cylinder 4, the lower extreme opening of first piston cylinder 4, the upper end is provided with first through-hole, first push rod 13 can pass first through-hole and stretch into in the interlock space 7. The first push rod 13 is fixedly arranged at the upper end of the first piston column 15, and the first push rod 13 is provided with a linkage device. The upper portion of the first piston cylinder 4 is provided with a plurality of pressure reducing holes 14, the pressure reducing holes 14 are communicated with the linkage space 7, and the positions of the pressure reducing holes 14 are located at the three-quarter height of the first piston cylinder 4. A sponge pad is provided at the lower part of the first piston post 15. A plurality of air outlet holes 6 are arranged in the linkage space 7.

Be provided with a plurality of second piston devices on the fishplate bar 3, second piston device includes second piston post 17, second push rod 8, second piston cylinder 5 and second spring 18, has seted up a plurality of column grooves on the inner wall of tunnel 1, the bottom and the fishplate bar 3 integrated into one piece of second piston cylinder 5, the sealed setting in column inslot of upper end of second piston cylinder 5, sealed mode of setting can adopt sealed glue to bond the gap between second piston cylinder 5 and the column inslot wall. The second piston column 17 is arranged in the second piston cylinder 5 in a sliding sealing mode, two ends of the second spring 18 are fixedly connected with the upper end of the second piston column 17 and the upper end of the inner wall of the second piston cylinder 5 respectively, a second through hole is formed in the lower end opening and the upper end of the second piston cylinder 5, and the second push rod 8 can penetrate through the second through hole. The second push rod 8 is arranged at the upper end of the second piston column 17, and the linkage device can drive the second push rod 8 to move upwards. An annular ventilation cavity 12 concentric with the second piston cylinder 5 is arranged on the inner wall of the second piston cylinder 5, the upper end of the ventilation cavity 12 is communicated with the columnar groove, and the lower end of the ventilation cavity 12 is provided with an opening and communicated with the linkage space 7.

The plurality of first piston cylinders 4 are arranged in a staggered manner, the plurality of second piston cylinders 5 are arranged in a staggered manner, and each first piston cylinder 4 is provided with one second piston cylinder 5 aligned with the corresponding second piston cylinder.

The linkage device comprises a plurality of reversing pulleys 10 and a transmission chain 11, a plurality of support frames 9 are fixedly arranged in the linkage space 7 and the columnar grooves, the upper end of each support frame 9 is used for arranging the reversing pulleys 10, one support frame 9 is arranged on the side surface of each first piston cylinder 4, the reversing pulleys 10 are arranged on the side surfaces of the upper end and the lower end of each support frame 9, the support frame 9 is also arranged at the top of an opening of a ventilation cavity 12 of each second piston cylinder 5, one end of the transmission chain 11 is fixedly connected with a first push rod 13, bypasses the upper side of the adjacent reversing pulley 10, then bypasses the lower right side of the reversing pulley 10 below, and then bypasses the lower side of the reversing pulley 10 in the ventilation cavity 12.

In the specific implementation:

when a train enters a space below the outer connecting plate 2, because the outer connecting plate 2 can form the shape of part of the inner wall of the tunnel 1, air waves formed by upward extrusion of the train are transmitted to the first piston column 15, the first piston column 15 moves upward, the first push rod 13 and the transmission chain 11 on the first push rod 13 move upward, the transmission chain 11 pulls the second push rod 8 after reversing of the reversing pulley 10, the second push rod 8 pulls the second piston column 17 to move outward, and the second piston column 17 can instantaneously reduce the air volume at the opening of the tunnel 1 and reduce the piston effect degree. In order to ensure that the second piston post 17 can suck air in the tunnel 1, it is necessary to ensure the sealing between the second piston cylinder 5 and the cylindrical groove, otherwise the second piston post 17 moves upwards, although air can be sucked in, and air above the second piston post 17 can be discharged into the tunnel 1, and the effect of reducing the air volume cannot be achieved. In this embodiment, the air above the second piston rod 17 can be discharged through the ventilation cavity 12, ensuring the function of the second piston rod 17 to suck air. The embodiment completely adopts a transmission structure, does not need to adopt electrical equipment, is relatively point-saving and rapid in response, and adopts the electrical equipment, so that certain starting time is needed, the cost is high, and the effect is relatively poor.

The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the present invention.