A rear anti-collision blind cover structure suitable for maglev pipeline transportation

Abstract

The present invention discloses a rear anti-collision blind cover structure suitable for maglev pipeline transportation, belonging to the technical field of pipeline maglev transportation, which includes a rear pipeline arranged at the rear end of a mainline vacuum pipeline, and by using the corresponding arrangement of an anti-collision layer and a buffer layer in the rear pipeline, the train anti-collision at the rear end of the maglev pipeline can be achieved, ensuring reliable protection of the maglev train when the rear end of the vacuum pipeline is out of control. The present invention is suitable for the rear anti-collision blind cover structure of maglev pipeline transportation, which has a simple structure arrangement and convenient inspection and maintenance, and can ensure the sealing of the mainline vacuum pipeline while achieving anti-collision at the rear end of the maglev pipeline transportation, ensuring that when the maglev train loses control at the rear end of the vacuum pipeline, multi-level anti-collision and buffering can be achieved, reducing the damage to the pipeline system when the train loses control, reducing the rigid impact force when the maglev train loses control, reducing the damage to the train when the maglev train loses control and the harm to the passengers in the car, ensuring the safety and reliability of the operation of the maglev pipeline transportation.

Description

Technical Field

[0001] The invention belongs to the technical field of pipeline maglev transportation, and in particular relates to a rear anti-collision blind cover structure suitable for maglev pipeline transportation. Background Art

[0002] With the continuous development of my country's rail transit technology, rail transit has become more and more diverse, playing an increasingly important role in people's daily travel and transportation. Among the many forms of rail transit, maglev pipeline transportation is a relatively new form of rail transit. By creating a low vacuum environment in the pipeline, the maglev train runs in a low vacuum environment, which can effectively reduce the aerodynamic resistance and aerodynamic noise caused by the dense air medium, and further increase the running speed of the train.

[0003] In the design process of maglev pipeline transportation, the design and construction of vacuum pipelines are often the most important part of the entire engineering construction process. How to effectively maintain the internal environment in the pipeline is also the core link of the vacuum maglev system control. At the same time, in order to ensure the maintenance and anti-collision requirements of the tail of the vacuum maglev pipeline transportation, the end of the pipeline is usually not designed in a direct sealing way, but a corresponding form of blind cover structure is set, which serves as the last section of the vacuum pipeline to close the pipeline mouth, isolate the air, and maintain the internal environment of the pipeline.

[0004] Normally, the sealing performance of the blind cover structure directly determines whether the vacuum maglev pipeline can reach a low-pressure or low-temperature environment. Once its sealing performance cannot be guaranteed, it is very easy to cause excessive air resistance inside the pipeline and affect the temperature field inside the pipeline, causing maglev rail failure and affecting the safety of train driving. At the same time, the design of the blind cover structure also needs to consider the train collision prevention needs or pipeline maintenance needs at the tail end of the pipeline to ensure that the design of the tail end of the vacuum maglev pipeline fully meets the actual application. Summary of the invention

[0005] In response to one or more of the above defects or improvement needs in the prior art, the present invention provides a rear anti-collision blind cover structure suitable for magnetic levitation pipeline transportation, which can achieve the closure of the tail end of the vacuum magnetic levitation pipeline, provide protection for the maintenance of the air pressure and temperature environment in the pipe, and effectively achieve the rear anti-collision of the vacuum magnetic levitation pipeline, thereby improving the application reliability and safety of the vacuum magnetic levitation pipeline.

[0006] To achieve the above-mentioned object, the present invention provides a rear anti-collision blind cover structure suitable for magnetic levitation pipeline transportation, which comprises a rear pipeline arranged at the rear end of a mainline vacuum pipeline;

[0007] The tail pipe is supported by a plurality of support components, one end of which is a closed end, and the other end is connected to the tail of the main line vacuum pipe, and an anti-collision component is arranged in the tail pipe;

[0008] The anti-collision component includes a buffer layer arranged at the bottom of the tail pipe and an anti-collision layer filled in the inner space of the pipe above the buffer layer; and

[0009] The buffer layer is arranged along the axial extension of the tail pipe and is paved with granulated buffer units; the anti-collision layer includes an anti-collision unit filled in the tail pipe and a sealing unit arranged in the tail pipe near the end of the main line vacuum pipe; the sealing unit is used to seal the anti-collision unit in the tail pipe, and it and the anti-collision unit are respectively made of materials with elastic deformation ability.

[0010] As a further improvement of the present invention, the anti-collision units are densely packed in a plurality, and at least one partition net is provided in the tail pipe to divide the accommodation space above the buffer layer into at least two sections;

[0011] Correspondingly, the outer diameters of the anti-collision units on both sides of the separation net are different from each other, and the outer diameter of the anti-collision unit on the side of each separation net close to the mainline vacuum pipeline is larger than the outer diameter of the anti-collision unit on the other side.

[0012] As a further improvement of the present invention, blocking units are respectively provided at both ends of the tail pipe, so that the anti-collision unit is blocked in the tail pipe by the two blocking units.

[0013] As a further improvement of the present invention, a reinforcing spring and a fixing spring plate are further provided on one side of the closed end of the tail pipe;

[0014] The fixed spring plate is fixed in the tail pipe; the reinforcing spring is arranged along the axial direction of the tail pipe, one end of which abuts against the blocking unit on one side of the closed end, and the other end abuts against the fixed spring plate.

[0015] As a further improvement of the present invention, a pressure sensing device is provided between the reinforcing spring and the fixed spring plate for real-time monitoring of the pressure transmitted by the reinforcing spring and the fixed spring plate.

[0016] As a further improvement of the present invention, a folded airbag is provided on the side of the fixed spring plate away from the reinforcing spring, and an inflating device is provided correspondingly thereto;

[0017] The inflating device is electrically connected to the pressure sensing device, so that the inflating device can work when the pressure value detected by the pressure sensing device reaches a corresponding threshold value, thereby inflating the folding airbag.

[0018] As a further improvement of the present invention, an openable and closable cover is provided corresponding to the closed end of the tail pipe, so as to realize the communication between the inside and the outside of the closed end of the tail pipe.

[0019] As a further improvement of the present invention, the closed end of the tail pipe forms a maintenance well with a top opening, and the cover body is a maintenance well cover arranged at the top opening, so that maintenance personnel can enter the maintenance well after the maintenance well cover is opened.

[0020] As a further improvement of the present invention, an electric actuator is provided corresponding to the opening and closing of the inspection manhole cover, so as to realize automatic opening and closing control of the inspection manhole cover.

[0021] As a further improvement of the present invention, the matching form between the inspection well cover and the inspection well opening is a snap-on connection;

[0022] The bottom surface of the inspection well cover is provided with a plurality of wedge-shaped buckles in an upward direction, and a plurality of wedge-shaped slots and a plurality of receiving slots respectively connected to the wedge-shaped slots are provided at the opening of the inspection well, so that the wedge-shaped buckles can be embedded in the receiving slots and match with the wedge-shaped slots after rotation.

[0023] The above-mentioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0024] In general, compared with the prior art, the above technical solution conceived by the present invention has the following beneficial effects:

[0025] (1) The rear anti-collision blind cover structure suitable for maglev tube transportation of the present invention comprises a rear tube arranged at the rear end of a mainline vacuum tube. By using the corresponding arrangement of the anti-collision layer and the buffer layer in the rear tube, the train anti-collision at the rear end of the maglev tube can be achieved, ensuring reliable protection of the maglev train when it loses control at the rear end of the vacuum tube, reducing the damage to the pipeline system caused by the out-of-control train, avoiding excessive damage to the maglev train, and improving the safety of passengers riding the maglev tube transportation to a certain extent.

[0026] (2) The rear anti-collision blind cover structure of the present invention, which is suitable for maglev tube transportation, can accurately realize the setting of the anti-collision layer through the corresponding setting of the two pads and the multi-stage anti-collision sections in the anti-collision layer, fully conform to the impact force change trend when the maglev train loses control and collides, and provide multi-stage anti-collision protection for the maglev train, further improving the anti-collision effect.

[0027] (3) The rear anti-collision blind cover structure of the present invention, which is suitable for maglev tube transportation, can supplement another two-level anti-collision buffer mechanism in the rear tube by correspondingly setting the strengthening spring, the fixed spring plate, the pressure sensing device and the folding airbag, so as to further improve the anti-collision performance of the maglev train, ensure the success rate of the maglev train's anti-collision in the rear tube when it loses control, and fully reduce the degree of damage when the maglev train loses control and collides.

[0028] (4) The rear anti-collision blind cover structure of the present invention is suitable for maglev pipeline transportation. By setting a maintenance well with a top opening at the rear end of the rear pipeline, and correspondingly setting a maintenance well cover at the top of the maintenance well, and then using the snap connection setting at the maintenance well cover and the opening of the maintenance well, in combination with rubber pads, thermal insulation cotton, sealing oil and other structures, the sealing of the maintenance well can be effectively achieved, ensuring the sealing of the rear pipeline and even the main line vacuum pipeline, thereby ensuring the normal operation of the maglev train.

[0029] (5) The rear anti-collision blind cover structure suitable for maglev tube transportation of the present invention has a simple structure and is easy to inspect and maintain. It can ensure the sealing of the main line vacuum pipeline while realizing anti-collision at the rear of the maglev tube transportation, ensuring that when the maglev train loses control due to an accident in the vacuum pipeline, multi-level anti-collision and buffering can be achieved at the rear of the vacuum pipeline, thereby reducing the damage to the pipeline system when the train loses control, reducing the rigid impact force when the maglev train loses control, reducing the damage to the train when the maglev train loses control and the harm to the passengers in the car when the maglev train collides out of control, ensuring the safety and reliability of the operation of the maglev tube transportation, and having good practical value and application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 2 is a structural cross-sectional view of a rear anti-collision blind cover structure in an embodiment of the present invention;

[0031] Figure 2 2 is a schematic structural diagram of a rear anti-collision blind cover structure according to an embodiment of the present invention;

[0032] Figure 3 Schematic diagram of the sealing structure of the inspection manhole cover of the rear anti-collision blind cover structure in an embodiment of the present invention;

[0033] Figure 4 is a structural schematic diagram of a rear anti-collision blind cover structure in another embodiment of the present invention;

[0034] In all the drawings, the same reference numerals represent the same technical features, specifically:

[0035] 1. Tail pipe; 2. Anti-collision assembly; 3. Maintenance assembly; 4. Support assembly; 5. Mainline vacuum pipe;

[0036] 201, first pad; 202, second pad; 203, first anti-collision section; 204, second anti-collision section; 205, third anti-collision section; 206, separation net; 207, reinforcing spring; 208, pressure sensing device; 209, fixed spring plate; 210, buffer layer; 211, folded airbag; 212, inflator; 213, end cover;

[0037] 301, inspection well; 302, inspection ladder; 303, inspection well cover; 304, electric actuator; 305, hinge; 3011, wedge-shaped slot; 3012, sealing oil; 3013, rubber pad; 3031, wedge-shaped buckle; 3032, thermal insulation cotton;

[0038] 401. Support platform; 402. Support bracket. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0040] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0041] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0042] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0044] Example:

[0045] See also Figure 1 The tail anti-collision blind cover structure suitable for maglev pipeline transportation in the preferred embodiment of the present invention comprises a tail pipeline 1 coaxially arranged with the main line vacuum pipeline 5, and an anti-collision component 2 is arranged on the tail pipeline 1, and the rear anti-collision of maglev pipeline transportation is realized by the arrangement of the anti-collision component 2. At the same time, the arrangement of the tail blind cover structure can not only realize the anti-collision of the tail of the main line vacuum pipeline 5, but also play the role of blocking the pipeline opening, isolating air, and maintaining the low-pressure environment of the pipeline.

[0046] Specifically, in the preferred embodiment, the front end of the tail pipe 1 is coaxially connected to the tail of the main line vacuum pipe 5 and supported by a corresponding support assembly 4; accordingly, the tail end of the tail pipe 1 is also supported by the support assembly 4. In the preferred embodiment, the support assembly 4 includes a support platform 401 and a support bracket 402 arranged on the support platform 401 for fixing the corresponding pipe.

[0047] In actual configuration, the support bracket 402 preferably includes a support bracket arranged along the annular direction and a support bracket extending along the longitudinal direction, and each support bracket is arranged in a staggered manner to form a grid-like support structure around the pipe. Meanwhile, the support platform 401 is preferably a concrete platform structure, and the support bracket 402 is arranged on the top surface of the support platform 401.

[0048] Further, the tail pipe 1 in the preferred embodiment is preferably welded by structures such as an inner cylinder, longitudinal reinforcement ribs, annular reinforcement ribs, front and rear end saddles, etc. The front and rear end saddles are arranged at the bottom of the outer sides of the two ends of the inner cylinder to support the two ends of the inner cylinder. Correspondingly, longitudinal reinforcement ribs are arranged along the longitudinal direction on the outer periphery of the inner cylinder, and multiple annular reinforcement ribs are arranged at intervals in the longitudinal direction. The longitudinal reinforcement ribs and annular reinforcement ribs are combined to form a reinforcement structure on the outer periphery of the inner cylinder. Correspondingly, in order to further improve the structural performance of the inner cylinder, an insulation module is arranged on the outer periphery of the inner cylinder, which is preferably composed of insulation cotton, anchors, skins, skeletons and pressure plates, and is fixed by bolts. At the same time, the outer periphery of the inner cylinder is further preferably provided with a stiffening ring, and the adjacent stiffening rings are preferably arranged at intervals of 5m; accordingly, the outer periphery of the inner cylinder is also provided with a stiffening plate along the longitudinal direction, and it is further preferably a plurality of groups arranged at intervals in the annular direction, and it is specifically preferably a T-beam structure. By staggered arrangement of stiffening rings and stiffening plates, a mesh reinforcement member can be formed on the outer periphery of the inner cylinder.

[0049] At the same time, an anti-collision component 2 is provided in the tail pipe 1 in the preferred embodiment, which provides anti-collision insurance for the maglev train in the mainline vacuum pipe 5, thereby preventing the maglev train from colliding hard with the pipe structure when the tail end of the pipe is out of control, and reducing the impact of accidental collision of the maglev train on the pipe system and the maglev train to a certain extent, and can also correspondingly improve the safety of maglev train operation and reduce the risk of casualties.

[0050] In more detail, the anti-collision assembly 2 in the preferred embodiment includes a buffer layer 210 laid on the inner bottom of the tail pipe 1 and an anti-collision layer filled in the pipe space above the buffer layer 210. The buffer layer 210 in the preferred embodiment is preferably laid by granulated buffer units, which are laid on the bottom of the tail pipe 1, and the laying height is preferably not lower than the setting height of the traveling platform in the mainline vacuum pipe 5. Further preferably, the buffer layer 210 in the preferred embodiment is sand laid on the bottom of the tail pipe 1, which extends from one end of the tail pipe 1 to the other end.

[0051] Secondly, the anti-collision layer in the preferred embodiment is arranged in the pipeline space above the buffer layer 210. It is preferably composed of densely stacked anti-collision units with a certain elastic deformation ability, and sealing units are respectively arranged at both ends of the tail pipe 1 for sealing the anti-collision unit in the pipeline space above the buffer layer 210.

[0052] It can be understood that in order to avoid the rigid collision between the maglev train and the blocking unit, the blocking unit close to the mainline vacuum pipe 5 is made of a material with a certain elastic deformation ability, or is set to a mesh or thin plate structure to ensure that when the maglev train loses control and collides with it, the blocking unit can quickly release the obstruction of the anti-collision layer. Accordingly, in order to ensure the continuity of the anti-collision function of the anti-collision layer, the blocking unit on the side away from the mainline vacuum pipe 5 is preferably made of a relatively rigid material, such as a steel plate.

[0053] In a preferred embodiment, the anti-collision unit is a densely arranged elastic ball, which is further preferably a polyurethane ball made of polyurethane material. At the same time, the anti-collision unit in the preferred embodiment can be hollow or solid, and can be in the form of a sphere, a cube, an ellipsoid, a polyhedron, a long strip, or other forms.

[0054] Accordingly, in a preferred embodiment, the blocking unit close to one side of the mainline vacuum pipe 5 is a polyurethane pad of a certain thickness, which can play an insulating role, does not interfere with the track circuit, and initially plays a buffering role.

[0055] However, it is understandable that the anti-collision unit and / or blocking unit in the preferred embodiment can be made of not only polyurethane material but also other materials with similar properties, such as rubber, epoxy resin, acrylate, etc.

[0056] Furthermore, in the preferred embodiment, the anti-collision layer is formed with a plurality of anti-collision segments with different anti-collision capabilities, for example Figure 1 , namely, the first anti-collision section 203, the second anti-collision section 204 and the third anti-collision section 205. In actual configuration, each anti-collision section is separated by a partition net 206, and the outer diameter of the anti-collision unit used to fill each anti-collision section decreases from one end close to the main line vacuum pipe 5 to the other end. Figure 1 In the specific embodiment shown, the outer diameter of the polyurethane ball in the first anti-collision section 203 is 20 cm, the outer diameter of the polyurethane ball in the second anti-collision section 204 is 10 cm, and the outer diameter of the polyurethane ball in the third anti-collision section 205 is 5 cm. This arrangement can ensure that the impact resistance of the anti-collision section is gradually enhanced as the impact force of the train out of control increases.

[0057] In more detail, each anti-collision section in the preferred embodiment is arranged between the first pad 201 and the second pad 202, and the two pads are preferably polyurethane pads. Accordingly, a reinforcing spring 207 is also arranged on the side of the second pad 202 away from the first pad 201, one end of which abuts on the second pad 202, and the other end is connected to a fixed spring plate 209 arranged at the end of the tail pipe 1. The fixed spring plate 209 in the preferred embodiment is made of steel material, which can be used as a plugging unit at the tail end of the tail pipe 1, and provides an end plugging effect for the anti-collision layer in the tail pipe 1.

[0058] Preferably, a pressure sensing device 208 is provided between the reinforcing spring 207 and the fixed spring plate 209, by which the force of the reinforcing spring 207 acting on the fixed spring plate 209 can be monitored in real time, so as to determine the setting state and working state of the anti-collision layer.

[0059] Furthermore, a folding airbag 211 is provided on the side of the fixed spring plate 209 facing away from the reinforcing spring 207, and an inflation device 212 is provided correspondingly thereto. The inflation device 212 in the preferred embodiment is electrically connected to the pressure sensing device 208, so that it can be started under the induction of the pressure sensing device 208. Once the pressure sensing device 208 detects that the force of the reinforcing spring 207 increases, the inflation device 212 can be started accordingly to inflate the folding airbag 211.

[0060] In a preferred embodiment, the folded airbag 211 is arranged inside the tail end closure of the tail pipe 1 to reduce the damage to the tail end wall of the pipe after collision, and to avoid rigid collision between the maglev train and the tail end closure of the pipe, thereby protecting the lives of people on the maglev train. In a preferred embodiment, the folded airbag 211 is made of a membrane material having certain air tightness and impact resistance as well as some physical and chemical properties. It can maintain a certain shape and elasticity after inflation, and can automatically release gas when it is over-inflated or the collision pressure between it and the object exceeds a certain value, thereby avoiding excessive impact force and effectively absorbing and releasing the kinetic energy generated by the impact.

[0061] Furthermore, if Figure 1 , Figure 2As shown in the figure, the tail end of the tail pipe 1 in the preferred embodiment is closed, and a vertically arranged inspection well 301 is formed at the top of the tail end, and the inspection assembly 3 shown in the figure is formed accordingly. In actual setting, the inspection well 301 in the preferred embodiment is in the form of a top opening, and a inspection well cover 303 that can close the opening is arranged corresponding to the top opening. In specific setting, the inspection well cover 303 in the preferred embodiment is supported by cast iron, and its outer diameter is not less than 1200mm, and its weight is not less than 300kg. Through the vertical setting and top opening of the inspection well 301, the inspection well cover 303 can close the opening of the inspection well 301 with its own weight. Compared with the end opening or the side opening, the sealing performance is better, which can further ensure the sealing of the tail pipe 1 and ensure the maintenance of the low vacuum environment in the main line vacuum pipe 5.

[0062] In order to carry out maintenance work in the inspection well 301 , a vertically extending maintenance ladder 302 is provided in the inspection well 301 in the preferred embodiment, extending from the opening of the inspection well 301 to the inner bottom of the inspection well 301 , so as to facilitate maintenance personnel to enter the inspection well 301 .

[0063] In addition, in a preferred embodiment, the sealing and connection between the inspection well cover 303 and the opening of the inspection well 301 is achieved by Figure 3 The buckle structure shown in is realized. Among them, the bottom surface of the inspection well cover 303 is provided with a buckle structure as shown in Figure 3 The wedge-shaped buckle 3031 shown in FIG. 303 is provided at the top opening of the inspection well 301. Figure 3 The wedge-shaped slot 3011 shown in the figure can realize the buckle matching between the two by lifting and rotating the inspection well cover 303. Of course, at the opening of the inspection well 301, there is also an embedding groove connected to the wedge-shaped slot 3011 and used for the wedge-shaped buckle 3031 to be embedded, ensuring that the wedge-shaped buckle 3031 is first embedded in the embedding groove and then matched with the wedge-shaped slot 3011 by rotation. This is easy to achieve using existing technology and will not be described in detail here.

[0064] Preferably, in order to improve the sealing performance of the inspection well cover 303 and the inspection well 301 after being closed, sealing oil 3012 and / or rubber pad 3013 are preferably provided in the wedge-shaped slot 3011 to improve the sealing performance after the two are matched. In addition, it is preferred that a heat-insulating material is provided along the circumference of the inspection well cover 303, for example Figure 3 The thermal insulation cotton 3032 shown in the figure is used to seal the gap after the inspection manhole cover 303 is closed and matched.

[0065] Further preferably, in order to realize the rapid opening of the inspection manhole cover 303, an electric actuator 304 is correspondingly provided therefor in the preferred embodiment, which is further specifically a combined structure of a driving motor and a hinge 305, and by utilizing its corresponding work, the rotation control and lifting control of the inspection manhole cover 303 can be realized.

[0066] exist Figure 1 , Figure 2 In the preferred embodiment shown, the tail end of the tail pipe 1 is closed, and its tail end is further fixed by external cast iron, which can have higher strength, pressure resistance and sealing performance; in the specific setting, it is preferably made of cast iron steel plate with a thickness of not less than 800 mm, and further reinforced with vertical reinforcement ribs, and the number of reinforcement ribs arranged in the roundness direction is not less than 9.

[0067] Of course, in Figure 4 In another preferred embodiment shown, the tail end of the tail pipe 1 can also be sealed by an openable and closable end cover 213; accordingly, in this embodiment, the folding airbag 211 is preferably arranged on the inner side of the end cover 213, and the end cover 213 is preferably connected to the end of the tail pipe 1 by a hinged manner, so that it can be opened by rotation.

[0068] The rear anti-collision blind cover structure suitable for maglev pipeline transportation in the present invention has a simple structure and is convenient to inspect and maintain. It can ensure the sealing of the mainline vacuum pipeline while realizing anti-collision at the rear of the maglev pipeline transportation, ensuring that when the maglev train loses control due to an accident in the vacuum pipeline, multi-level anti-collision and buffering can be achieved at the rear of the vacuum pipeline, reducing damage to the pipeline system when the train loses control, reducing the rigid impact force when the maglev train loses control, reducing damage to the train when the maglev train loses control and harm to passengers in the car when the maglev train collides out of control, ensuring the safety and reliability of the operation of the maglev pipeline transportation, and having good practical value and application prospects.

[0069] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rear anti-collision blind cover structure suitable for magnetic levitation pipeline transportation, characterized in that: It includes a tail pipe arranged at the tail end of the mainline vacuum pipe; The tail pipe is supported by a plurality of support components, one end of which is a closed end, and the other end is connected to the tail of the main line vacuum pipe, and an anti-collision component is arranged in the tail pipe; The anti-collision component includes a buffer layer arranged at the bottom of the tail pipe and an anti-collision layer filled in the inner space of the pipe above the buffer layer; and The buffer layer is arranged along the axial extension of the tail pipe and is paved with granulated buffer units; the anti-collision layer includes an anti-collision unit filled in the tail pipe and a sealing unit arranged in the tail pipe near the end of the main line vacuum pipe; the sealing unit is used to seal the anti-collision unit in the tail pipe, and it and the anti-collision unit are respectively made of materials with elastic deformation ability.

2. The rear anti-collision blind cover structure suitable for magnetic levitation pipeline transportation according to claim 1 is characterized in that: The anti-collision units are densely packed in a plurality, and at least one partition net is provided in the tail pipe to divide the accommodation space above the buffer layer into at least two sections; Correspondingly, the outer diameters of the anti-collision units on both sides of the separation net are different from each other, and the outer diameter of the anti-collision unit on the side of each separation net close to the mainline vacuum pipeline is larger than the outer diameter of the anti-collision unit on the other side.

3. The rear anti-collision blind cover structure suitable for magnetic levitation pipeline transportation according to claim 1 or 2, characterized in that: Blocking units are respectively arranged at the two ends of the tail pipe, so that the anti-collision unit is blocked in the tail pipe by the two blocking units.

4. The rear anti-collision blind cover structure suitable for magnetic levitation pipeline transportation according to claim 3 is characterized in that: A reinforcing spring and a fixing spring plate are also provided on one side of the closed end of the tail pipe; The fixed spring plate is fixed in the tail pipe; the reinforcing spring is arranged along the axial direction of the tail pipe, one end of which abuts against the blocking unit on one side of the closed end, and the other end abuts against the fixed spring plate.

5. The rear anti-collision blind cover structure suitable for magnetic levitation pipeline transportation according to claim 4 is characterized in that: A pressure sensing device is provided between the reinforcing spring and the fixed spring plate, for real-time monitoring of the pressure transmitted by the reinforcing spring and the fixed spring plate.

6. The rear anti-collision blind cover structure suitable for magnetic levitation pipeline transportation according to claim 5 is characterized in that: A folding airbag is arranged on the side of the fixed spring plate facing away from the reinforcing spring, and an inflating device is arranged correspondingly thereto; The inflating device is electrically connected to the pressure sensing device, so that the inflating device can work when the pressure value detected by the pressure sensing device reaches a corresponding threshold value, thereby inflating the folding airbag.

7. The rear anti-collision blind cover structure suitable for magnetic levitation pipeline transportation according to any one of claims 1, 2, 4 to 6, characterized in that: An openable and closable cover is provided corresponding to the closed end of the tail pipe, so as to realize the communication between the inside and the outside of the closed end of the tail pipe.

8. The rear anti-collision blind cover structure suitable for magnetic levitation pipeline transportation according to claim 7 is characterized in that: The closed end of the tail pipe forms a maintenance well with a top opening, and the cover body is a maintenance well cover arranged at the top opening, so that maintenance personnel can enter the maintenance well after the maintenance well cover is opened.

9. The rear anti-collision blind cover structure suitable for magnetic levitation pipeline transportation according to claim 8, characterized in that: An electric actuator is provided corresponding to the opening and closing of the inspection manhole cover, which is used to realize automatic opening and closing control of the inspection manhole cover.

10. The rear anti-collision blind cover structure suitable for magnetic levitation pipeline transportation according to claim 8 or 9, characterized in that: The matching form between the inspection well cover and the inspection well opening is a snap-fit ​​connection; The bottom surface of the inspection well cover is provided with a plurality of wedge-shaped buckles in an upward direction, and a plurality of wedge-shaped slots and a plurality of receiving slots respectively connected to the wedge-shaped slots are provided at the opening of the inspection well, so that the wedge-shaped buckles can be embedded in the receiving slots and match with the wedge-shaped slots after rotation.

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