Pressure wave protection device

Abstract

The utility model discloses a pressure wave protection device which comprises a fixed assembly and a movable assembly, the fixed assembly comprises a fixed bottom plate, a guide shaft, a fixed shaft and an installation top plate, the guide shaft and the fixed shaft are both installed on the fixed bottom plate and provide positioning and supporting for the device, and the installation top plate is installed on the fixed shaft to ensure stable installation of the device; the movable assembly comprises an air cylinder and a movable top plate connected with the air cylinder, the movable top plate is located between the fixed bottom plate and the installation top plate, and the movable top plate can be driven by the air cylinder to move up and down along the guide shafts to achieve quick opening and closing of the air opening. According to the utility model, the fixed component and the movable component are matched to realize quick opening and closing of the tuyere, so that pressure balance inside and outside a train body is realized, and the internal environment of the train is effectively protected from being influenced by external pressure fluctuation; a reinforcing plate and an electromagnetic valve fixing plate are further arranged to stabilize and reinforce the supporting effect of the mounting top plate, and the overall stability and safety of the device are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to pressure wave protection technical field, concretely relates to a pressure wave protection device. BACKGROUND

[0002] In the running environment of high-speed train, especially when passing through the tunnel quickly or meeting, the pressure change inside and outside the car is extremely violent, which poses a challenge to passenger comfort and vehicle structure safety, in order to solve this problem, the existing high-speed train generally adopts pressure wave protection device to alleviate the influence of pressure fluctuation. However, the installation and design of the existing pressure wave protection device have certain limitations, mainly reflected in the following two aspects: one is that the installation stability of the pressure wave protection device is insufficient: the current pressure wave protection device is usually fixed on the train roof by ordinary nut gasket, and the train is continuously subjected to various impact forces during operation, especially the huge pressure wave impact generated when high-speed through the tunnel, which leads to the loosening of the nut under the impact of the traditional fixing mode for a long time, thereby affecting the stability and safety of the device; Two is that the installation space utilization efficiency of the pressure wave protection device is low: the volume of the pressure wave protection device is usually large, and the internal installation space of the train track air conditioner is extremely limited, the large volume of the existing device not only occupies the valuable internal space, but also makes other components such as cables of the air conditioning system must be complexly bypassed, which increases the complexity of structure design and installation, also reduces the overall efficiency and reliability of the system.

[0003] Therefore, the utility model is provided. UTILITY MODEL CONTENT

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art, solve the problems of insufficient installation stability of the pressure wave protection device and low installation space utilization efficiency of the pressure wave protection device in the prior art, and provide a pressure wave protection device, which strengthens the installation strength of the installation top plate through the self-locking nut, and the support effect of the installation top plate is stabilized through the reinforcing plate and the electromagnetic valve fixing plate, the installation cable can be fixedly arranged at the side flanging portion of the installation top plate, and the space utilization rate of the air conditioning system is improved.

[0005] To solve the above technical problems, the basic idea of the technical scheme of the utility model is:

[0006] The utility model provides a pressure wave protection device, which comprises a fixed assembly and a movable assembly,

[0007] The fixed assembly comprises a fixed bottom plate, a guide shaft, a fixed shaft and an installation top plate, the guide shaft and the fixed shaft are both installed on the fixed bottom plate to provide positioning and support for the device, and the installation top plate is installed on the fixed shaft to ensure stable installation of the device;

[0008] The movable component includes a cylinder and a movable top plate connected to the cylinder. The movable top plate is located between the fixed base plate and the mounting top plate, and the movable top plate can move up and down along the guide shaft under the drive of the cylinder to realize the rapid opening and closing of the air vent.

[0009] Furthermore, the base plate is installed at the air conditioning vent, and the base plate has an opening in the middle, with a sealing strip installed at the opening.

[0010] Furthermore, the mounting plate is mounted on the fixed shaft via a detachable fastener.

[0011] Furthermore, the detachable fastener is a self-locking nut.

[0012] Furthermore, a reinforcing plate is also installed on the mounting top plate, with one end of the reinforcing plate connected to the bottom of the cylinder and the other end connected to the top of the mounting top plate.

[0013] Furthermore, the mounting plate has flanges of a preset width on both sides, and several openings for cable routing are provided on the flanges on both sides of the mounting plate.

[0014] Furthermore, cables can be directly fixed at the opening using connectors, or fixed using brackets installed at the opening.

[0015] Furthermore, a solenoid valve mounting plate is also installed on the mounting top plate. One end of the solenoid valve mounting plate is connected to the bottom of the solenoid valve, and the other end is connected to the top of the mounting top plate.

[0016] Furthermore, the pressure wave protection device also includes a sliding bearing, which is sleeved outside the guide shaft to ensure the stable movement of the movable top plate.

[0017] Furthermore, the pressure wave protection device also includes a pressure sensor for monitoring pressure changes inside and outside the vehicle. The pressure sensor is connected to a solenoid valve, and when the pressure sensor detects a pressure difference exceeding a preset threshold, it triggers the solenoid valve to open.

[0018] By adopting the above technical solution, compared with the prior art, this utility model has the following beneficial technical effects:

[0019] 1. This utility model uses a self-locking nut to fasten the mounting top plate, preventing the fasteners from loosening and strengthening the fixing strength of the mounting top plate; the reinforcing plate and the solenoid valve fixing plate stabilize and strengthen the supporting role of the mounting top plate. A reinforcing plate is set in the middle of the mounting top plate to support the cylinder, and a solenoid valve fixing plate is set on the mounting top plate to support the solenoid valve, thereby strengthening the supporting role of the mounting top plate and improving the overall safety and reliability of the device.

[0020] 2. The side of the mounting top plate is provided with an opening, the opening is directly fixed with the cable through the connecting piece, and the cable can be supported and fixed through the support arranged at the opening, so that the structure for avoiding the cable is avoided, and the space utilization rate of the air conditioning system is improved.

[0021] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0022] The accompanying drawings are part of the present application and serve to provide a further understanding of the present application, the illustrative embodiments of the present application and the description thereof serve to explain the present application, but do not constitute an improper limitation on the present application. Obviously, the drawings described below are only some embodiments, and those skilled in the art can obtain other drawings from these drawings without creating labor. In the drawings:

[0023] Figure 1 is a structural schematic diagram of the pressure wave protection device in the present application.

[0024] Icon: 1, cylinder; 2, electromagnetic valve; 3, mounting top plate; 4, reinforcing plate; 5, electromagnetic valve fixing plate; 6, sliding bearing; 7, movable top plate; 8, fixed bottom plate; 9, sealing rubber strip; 10, guide shaft; 11, self-locking nut; 12, fixed shaft.

[0025] It should be noted that these drawings and written descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments will be described clearly and completely below with reference to the drawings of the embodiments of the present application. The following embodiments are used to illustrate the present application, but not to limit the scope of the present application.

[0027] In the description of the present application, it should be noted that the terms "up", "down", "front", "back", "left", "right", "vertical", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application.

[0028] In the description of the utility model, it is necessary to explain that, unless there are explicit provisions and limitations, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or it can be detachable connection, or it can be integrally connected, it can be mechanical connection, or it can be electrical connection, it can be directly connected, or it can be indirectly connected through intermediate medium, for ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0029] The current pressure wave protection device adopts the traditional nut gasket fixing mode, under the huge pressure wave impact suffered when the train runs at high speed and passes through the tunnel, the nut is prone to loosening due to long-time vibration, which directly affects the stability and safety of the device, so that the current pressure wave protection device has the problem of insufficient stability, and because the volume of the pressure wave protection device is relatively large, it is contradictory with the limited space inside the train track air conditioning system, not only waste valuable space resources, but also increase the complexity of the layout of other components (such as cables), unnecessary detour is needed, so that the pressure wave protection device has the problem of low space utilization efficiency. Therefore, the utility model provides a kind of pressure wave protection device.

[0030] As shown in Figure 1 The utility model provides a kind of pressure wave protection device, including fixed assembly and movable assembly, fixed assembly includes fixed bottom plate 8, guide shaft 10, fixed shaft 12 and installation top plate 3, guide shaft 10 and fixed shaft 12 are all installed on fixed bottom plate 8, provide positioning and support for device, installation top plate 3 is installed on fixed shaft 12 to ensure the stable installation of device, movable assembly includes cylinder 1 and movable top plate 7 connected with cylinder 1, movable top plate 7 is located between fixed bottom plate 8, installation top plate 3, and movable top plate 7 can be driven by cylinder 1 and moves up and down along guide shaft 10, realizes the quick opening and closure of air port.

[0031] In the utility model, the fixed bottom plate 8 in fixed assembly, guide shaft 10, fixed shaft 12 and installation top plate 3 cooperate to provide stable support and accurate positioning for the whole device, ensure the reliability and stability under complex operating environment. The movable assembly is driven by cylinder 1, and the guide shaft 10 guides the transmission direction, so that the movable top plate 7 can quickly and smoothly complete the up-down movement, realize the instant opening and closure of air port, improve the reaction speed of pressure wave protection device to pressure wave change, effectively protect the internal environment of train from the influence of external pressure fluctuation.

[0032] Further, the fixed bottom plate 8 is installed at the air outlet of the air conditioner, and the middle part of the fixed bottom plate 8 is provided with an opening, and the opening is provided with a sealing rubber strip 9.

[0033] On one hand, the fixed bottom plate 8 supports the whole pressure wave protection device, and on the other hand, the opening of the fixed bottom plate 8 is aligned with and communicated with the air conditioner air outlet, the movable top plate 7 falls to the bottom and abuts against the sealing rubber strip 9 at the opening of the air conditioner air outlet, so that the air outlet is closed, the pressure fluctuation outside the vehicle is isolated, and the air pressure balance in the vehicle is realized.

[0034] Further, the mounting top plate 3 is mounted on the fixed shaft 12 through detachable fixing members. The guide shaft 10 and the fixed shaft 12 are both mounted on the fixed bottom plate 8, and the upper portions of the guide shaft 10 and the fixed shaft 12 are provided with the mounting top plate 3, and the mounting top plate 3 is connected with the fixed shaft 12 through detachable fixing members.

[0035] The mounting top plate 3 bears and mounts the air cylinder 1 and the electromagnetic valve 2 for controlling the operation of the movable top plate 7, and is further provided with a structural member for supporting a fixed cable.

[0036] Optionally, the detachable fixing members are any one of screws, bolts, nuts, pins and buckles which have a fastening effect. Preferably, the detachable fixing members in the embodiment are self-locking nuts 11, and those skilled in the art can select and design other detachable fixing members with a fastening effect according to actual needs.

[0037] Further, the two sides of the mounting top plate 3 are provided with flanges with a preset width, and a plurality of openings for cable arrangement are arranged on the flanges of the two sides of the mounting top plate 3.

[0038] The openings can be any one of a circular shape, a rectangular shape and a square shape. Preferably, the shape of the openings in the embodiment is circular. The circular openings are not only easy to manufacture and process, but also have a small stress concentration effect and a more uniform stress distribution.

[0039] Further, the cable can be directly fixed through the connecting members at the openings, or the cable can be fixed through the erection of a support at the openings. Specifically, in one way, the cable is penetrated through the openings and then fixed on the flanges of the two sides of the mounting top plate 3 by using the connecting members; in another way, a support is arranged on the flanges of the two sides by using the openings, and then the cable is fixed on the support.

[0040] As an embodiment of the utility model, a reinforcing plate 4 is further arranged on the mounting top plate 3, one end of the reinforcing plate 4 is connected with the bottom of the air cylinder 1, and the other end is connected with the top of the mounting top plate 3.

[0041] The reinforcing plate 4 is connected with the mounting top plate 3 through detachable fixing members. Preferably, the reinforcing plate 4 is riveted on the mounting top plate 3 through rivets. The reinforcing plate 4 is used for supporting the air cylinder 1 and simultaneously enhancing the supporting strength of the mounting top plate 3.

[0042] As another embodiment of the utility model: install the top plate 3 still install solenoid valve fixed plate 5, solenoid valve fixed plate 5 one end is connected with the bottom of solenoid valve 2, the other end is connected with the top of installation top plate 3.

[0043] Solenoid valve fixed plate 5 is connected with installation top plate 3 through detachable fixing piece, preferably, solenoid valve fixed plate 5 is installed on installation top plate 3 through rivet riveting, solenoid valve fixed plate 5 is used for supporting installation solenoid valve 2, and the support strength of installation top plate 3 is also enhanced.

[0044] Further, solenoid valve fixed plate 5 and installation top plate 3 are same in width.

[0045] As an embodiment of the utility model, the pressure wave protection device further comprises a sliding bearing 6, which is sleeved on the guide shaft 10 to ensure stable movement of the movable top plate 7. The guide shaft 10 serves as a support and guide for the moving part, guiding the moving part to move along a predetermined path. The sliding bearing and the guide shaft 10 form a sliding contact surface, allowing the moving part to move smoothly along the path, reducing friction and wear during movement, and prolonging the service life of the device.

[0046] Further, the pressure wave protection device further comprises a pressure sensor for monitoring the pressure change inside and outside the vehicle. The pressure sensor is signal-connected with the solenoid valve 2, and when the pressure sensor detects that the pressure difference exceeds the preset threshold, the solenoid valve 2 is triggered to conduct.

[0047] The pressure sensor is arranged near the air inlet of the vehicle, and can monitor the difference between the outside air and the pressure inside the vehicle at any time. According to the monitoring condition of the pressure sensor, the on-off state of the solenoid valve 2 is adjusted in time, the inflow amount of fresh air is controlled, and the air pressure balance inside and outside the vehicle is maintained.

[0048] The working principle of the utility model is as follows: when the pressure sensor detects that the pressure inside and outside the vehicle body exceeds the preset threshold, the solenoid valve 2 is conducted, the movable top plate 7 is driven by the cylinder 1 to move downward until the movable top plate 7 abuts against the sealing rubber strip 9 on the fixed bottom plate 8, realizing rapid closure of the air conditioning air outlet (opening of the fixed bottom plate 8), thereby isolating the pressure fluctuation outside the vehicle and achieving air pressure balance inside the vehicle; when the pressure inside and outside the vehicle body does not exceed the preset threshold (the pressure fluctuation outside the vehicle is small), the movable top plate 7 is restored between the fixed bottom plate 8 and the installation top plate 3, the solenoid valve 2 is disconnected, and the air conditioning air outlet (opening of the fixed bottom plate 8) is in an open state, realizing air pressure balance inside and outside the vehicle body.

[0049] The above merely describes preferred embodiments of the present application and is not intended to limit the present application in any form, although the present application has been disclosed as above with preferred embodiments, however, it is not intended to limit the present application, any person skilled in the art without departing from the technical scheme of the present application can make some changes or modifications to the above-mentioned technical content for equivalent embodiments, the implementation schemes in the above-mentioned embodiments can be further combined or replaced, as long as it does not deviate from the technical scheme of the present application, any simple modification, equivalent change and modification made to the above-mentioned embodiments according to the technical essence of the present application still belongs to the scope of the present application.

Claims

1. A pressure wave protection device, characterized by: The device comprises a fixed component and a movable component, The fixed component comprises a fixed base plate, a guide shaft and a fixed shaft, both of which are installed on the fixed base plate to provide positioning and support for the device, and a mounting top plate installed on the fixed shaft to ensure stable installation of the device; The movable component comprises a cylinder and a movable top plate connected to the cylinder, the movable top plate being located between the fixed base plate and the mounting top plate and being movable up and down along the guide shaft under the drive of the cylinder to realize quick opening and closing of the air outlet; The mounting top plate carries the cylinder and a solenoid valve for controlling the operation of the movable top plate; The mounting top plate is further provided with a reinforcing plate, one end of which is connected to the bottom of the cylinder and the other end of which is connected to the top of the mounting top plate; Both sides of the mounting top plate are provided with flanges with a preset width, and a plurality of openings for cable arrangement are arranged on the flanges; The mounting top plate is further provided with a solenoid valve fixing plate, one end of which is connected to the bottom of the solenoid valve and the other end of which is connected to the top of the mounting top plate.

2. The pressure wave protection apparatus of claim 1, wherein: The fixed base plate is installed at the air outlet of an air conditioner, and the middle part of the fixed base plate is provided with an opening, and a sealing rubber strip is arranged at the opening.

3. The pressure wave protection apparatus of claim 1, wherein: The mounting top plate is installed on the fixed shaft through a detachable fixing member.

4. The pressure wave protection apparatus of claim 3, wherein: The detachable fixing member is a self-locking nut.

5. The pressure wave protection apparatus of claim 2, wherein: The opening can directly fix the cable through a connecting member, or fix the cable through a support arranged at the opening.

6. The pressure wave protection apparatus of claim 1, wherein: Further comprising a pressure sensor for monitoring the pressure change inside and outside the vehicle, the pressure sensor being signal connected with the solenoid valve, and when the pressure sensor detects that the pressure difference exceeds a preset threshold, the solenoid valve is triggered to be turned on.

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