High-speed train multifunctional inter-car outer windshield connecting mechanism

Abstract

The application discloses a high-speed train inter-car multifunctional outer wind screen connecting mechanism and relates to the field of train inter-car accessories. The connecting mechanism comprises two wind screen devices and a plurality of flexible baffle plates. The wind screen device comprises a mounting seat, an inner air bag and an outer air bag which are sequentially arranged. The mounting seat, the inner air bag and the outer air bag are all in the shape of a rectangular frame. A rigid sealed air chamber is arranged on the mounting seat. The outer air bag and the inner air bag are fixedly connected with one side of the mounting seat. The side of the inner air bag, which is away from the mounting seat, is embedded in the side of the outer air bag, which is close to the mounting seat. The side of the inner air bag, which is close to the mounting seat, is in communication with the sealed air chamber through a plurality of damping holes. The two wind screen devices are oppositely arranged. The two outer air bags are tightly close to each other. The two ends of the flexible baffle plates are fixedly connected with the two mounting seats. The plurality of flexible baffle plates are used for restraining the two outer air bags in the region between the two mounting seats. The inter-car outer wind screen connecting mechanism can not only isolate sound, reduce resistance and resist rain and snow, but also has the characteristics of rigidity and damping, and can alleviate the impact between vehicles.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of train inter-car accessories, in particular to a multifunctional inter-car outer windscreen connecting mechanism of high-speed train. BACKGROUND

[0002] With the progress of train technical equipment and the increase of running speed, passengers' demand for riding comfort is also higher and higher, however, the increase of running speed aggravates the problem of car body vibration, which seriously affects the running quality of train. Research shows that the stiffness and damping characteristics of car end connecting device have obvious constraint effect on car body vibration, which in turn affects the stability of train running. The traditional train inter-car connecting device is mainly car hook buffer device and windscreen device, and the transverse and vertical coupling effect between carriages is weak, so the head shaking vibration of car body cannot be effectively inhibited. In order to make up for the deficiency of stiffness and damping of traditional inter-car connecting device, inter-car damper is equipped in high-speed trains such as CR400AF and CR400BF, and the use results show that the installation of inter-car damper can strengthen the coupling effect of vibration mode between front and rear carriages in train, and also can inhibit the head shaking vibration of vehicle, which improves the running stability of train.

[0003] Although the installation of inter-car damper at the end of carriage can significantly inhibit the vibration of car body, there are still some deficiencies in the installation of inter-car damper: in order to reduce the aerodynamic resistance in the running process, the outer windscreen structure of high-speed train is generally designed as full package, and the installation space of inter-car damper is limited due to the more inter-car connecting devices and accessories of high-speed train; at the same time, the installation of inter-car damper at the end of carriage also increases the design and manufacturing cost, increases the weight of car end connecting device, and reduces the working efficiency of train marshalling and uncoupling; in addition, if the number of inter-car damper is insufficient, it has no obvious effect on improving the dynamic performance of train. The car hook buffer device and windscreen device in traditional train connecting system adopt the architecture of function structure differentiation, which causes complex structure and overlapping functions, and is in conflict with the demand of light weight, easy operation and high accessibility of future high-speed train, so it is urgent to innovate the physical architecture of multifunctional integration of "vibration and resistance reduction, safety and energy saving, sealing and accessibility". SUMMARY

[0004] The purpose of the present application is to overcome the deficiencies of the prior art, and provide a multifunctional inter-car outer windscreen connecting mechanism of high-speed train, which not only has the functions of traditional outer windscreen sound insulation and resistance reduction, and resists rain and snow, but also has stiffness and damping characteristics, can completely or partially replace inter-car damper, can alleviate the impact between vehicles, effectively inhibit the vibration of car body, thereby improve the stability of train running, and at the same time, can reduce the weight of car end connecting system, shorten the time consumed by installing or removing inter-car damper during train marshalling and uncoupling, and save the space of car end occupied by inter-car damper.

[0005] The purpose of the present application is achieved by the following technical solutions:

[0006] A high-speed train multifunctional car external windscreen connecting mechanism, comprising two windscreen devices and a plurality of flexible baffles, wherein the windscreen device comprises a mounting seat, an inner air bag and an outer air bag arranged in sequence, the mounting seat, the inner air bag and the outer air bag are all in the shape of a rectangular frame, a rigid closed air chamber is arranged on the mounting seat, the outer air bag and the inner air bag are both fixedly connected to one side of the mounting seat, the side of the inner air bag away from the mounting seat is embedded in the side of the outer air bag close to the mounting seat, and the side of the inner air bag close to the mounting seat is in communication with the closed air chamber through a plurality of damping holes; the two windscreen devices are oppositely arranged, the two outer air bags are in close contact with each other, the two ends of the flexible baffles are fixedly connected to the two mounting seats respectively, and the plurality of flexible baffles are used to constrain the two outer air bags in the region between the two mounting seats.

[0007] Specifically, the outer air bag comprises two outer half air bags in the shape of C, the two outer half air bags are oppositely arranged so that the outer air bag as a whole is in the shape of a rectangular frame matching the shape of the mounting seat; the inner air bag comprises two inner half air bags in the shape of C, the two inner half air bags are oppositely arranged so that the inner air bag as a whole is in the shape of a rectangular frame matching the shape of the mounting seat; the outer half air bag and the inner half air bag correspond to each other, the outer half air bag and the inner half air bag are both fixedly connected to the mounting seat, the side of the inner half air bag away from the mounting seat is embedded in the side of the outer half air bag close to the mounting seat, and the side of the inner half air bag close to the mounting seat is in communication with the closed air chamber through a plurality of damping holes; a rigid partition plate is arranged at the center position of the side of the mounting seat close to the inner air bag, and the partition plate is used to separate the two inner half air bags and the two outer half air bags.

[0008] Further, the inner air bag further comprises a connecting plate frame, the inner half air bag is fixedly installed on one side of the connecting plate frame, a plurality of damping tubes are detachably connected to the other side of the connecting plate frame, and the damping holes are arranged in the damping tubes; a plurality of connecting holes are formed in one side of the closed air chamber, the connecting plate frame is connected to the mounting seat through bolts, and one end of the damping tube away from the inner air bag is sealingly inserted into the connecting hole.

[0009] Further, the closed air chamber is made of a heat-conducting material, heat dissipation fin plates are installed on the periphery of the closed air chamber, and the fins of the heat dissipation fin plates are arranged in a direction perpendicular to the mounting seat.

[0010] Further, the heat dissipation fin plates are a plurality of heat dissipation fin plates, and the heat dissipation fin plates are installed at positions close to the damping holes.

[0011] Further, the inner half air bag is provided with a first detection pipe and a first air supplement pipe in communication, the outer half air bag is provided with a second detection pipe and a second air supplement pipe in communication, the first detection pipe and the second detection pipe are both provided with a pressure gauge, and the first air supplement pipe and the second air supplement pipe are both connected with the air compressor unit through a control valve.

[0012] The beneficial effects of the present application are:

[0013] The high-speed train multifunctional car shop outer wind baffle connecting mechanism comprises two wind baffle devices and a plurality of flexible baffles, the wind baffle device comprises a mounting seat, an inner air bag and an outer air bag arranged in sequence, the mounting seat is provided with a rigid sealed air chamber, the inner air bag is embedded on one side of the outer air bag away from the mounting seat, and the side of the inner air bag close to the mounting seat is communicated with the sealed air chamber through a plurality of damping holes, the two wind baffle devices are oppositely arranged, and the two outer air bags are tightly attached to each other, so as to ensure the air tightness of the car shop connection, and the functions of sound insulation, drag reduction, rain and snow resistance of the wind baffle device are played; meanwhile, the gas in the inner air bag is compressed, so that the inner air bag has rigidity characteristics in all directions, and the rigidity of the car shop connecting device is increased. Since the inner air bag and the sealed air chamber are communicated through the damping holes, when the vehicle body shakes, nods and longitudinally vibrates during the driving of the vehicle, the gas in the inner air bag and the sealed air chamber flows through the damping holes, and the damping force generated in the flow process can effectively attenuate and suppress the vibration. The flexible baffles are used to constrain the two outer air bags in the region between the two mounting seats, so as to ensure the stability and reliability of the wind baffle device during operation.

[0014] Overall, the high-speed train multifunctional car shop outer wind baffle connecting mechanism not only can realize the functions of sound insulation, drag reduction, rain and snow resistance, but also has rigidity and damping characteristics, can completely or partially replace the car shop damper, can alleviate the impact between vehicles, effectively suppress the vibration of the vehicle body, and thus improve the stability of train operation. At the same time, since the car shop damper and other accessories are reduced, the weight of the car end connecting system can also be reduced, and the space occupied by the car shop damper can be saved; the wind baffle connecting mechanism is extremely convenient when being connected and disassembled, and the time consumed for installing or removing the car shop damper during the vehicle marshalling, connection or disassembly is shortened.

[0015] In the specific structure, the inner air bag further comprises a connecting plate frame and a plurality of damping pipes which are detachably arranged, and the damping holes are arranged in the damping pipes, so that the damping pipes can be conveniently and quickly replaced to achieve the purpose of quickly replacing the damping holes, and the length and size of the damping holes can also be conveniently changed to meet the use requirements of driving in different road sections. The sealed air chamber is made of heat-conducting material, and heat dissipation fins are installed outside the sealed air chamber, so that the sealed air chamber can be effectively cooled to reduce the influence of damping heat generation on the damping effect. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the external windshield connection mechanism for a high-speed train multi-functional workshop according to the present invention;

[0017] Figure 2 This is a schematic diagram of the windshield device in the external windshield connection mechanism of a high-speed train multi-functional workshop according to the present invention;

[0018] Figure 3 for Figure 2 The diagram shows the exploded structure of the windshield device.

[0019] Figure 4 for Figure 2 A cross-sectional view of the windshield device shown.

[0020] Figure 5 A schematic diagram illustrating the vibration reduction principle of a multi-functional workshop external windshield connection mechanism for a high-speed train during the vehicle body's swaying motion in use.

[0021] Figure 6 A schematic diagram illustrating the vibration reduction principle of a multi-functional workshop external windshield connection mechanism for a high-speed train when the train body is nodding during use.

[0022] Figure 7 A schematic diagram illustrating the vibration reduction principle of a multi-functional workshop external windshield connection mechanism for a high-speed train during use, to illustrate the longitudinal vibration state of the train body.

[0023] Figure 8 for Figure 2 A schematic diagram of the structure of the outer airbag in the windshield device shown;

[0024] Figure 9 for Figure 2 A schematic diagram of the structure of the inner airbag in the windshield device shown;

[0025] Figure 10 for Figure 2 A schematic diagram of the mounting base in the windshield device shown;

[0026] In the diagram, 1-mounting base, 2-sealed air chamber, 3-outer half-airbag, 4-inner half-airbag, 5-partition plate, 6-damping tube, 7-damping hole, 8-connecting plate frame, 9-connecting hole, 10-heat dissipation fins, 11-first detection tube, 12-first air supply tube, 13-second detection tube, 14-second air supply tube, 15-carriage, 16-flexible baffle. Detailed Implementation

[0027] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0028] like Figures 1 to 10As shown, a multi-functional external windshield connection mechanism for high-speed trains includes two windshield devices and several flexible baffles. Each windshield device includes a mounting base 1, an inner airbag, and an outer airbag arranged sequentially. The mounting base 1, inner airbag, and outer airbag are all rectangular frames. A rigid, sealed air chamber 2 is provided on the mounting base 1. Both the outer and inner airbags are fixedly connected to one side of the mounting base 1. The side of the inner airbag furthest from the mounting base 1 is embedded within the side of the outer airbag closest to the mounting base. The side of the inner airbag closest to the mounting base 1 communicates with the sealed air chamber 2 through several damping holes 7. When applied to car coupling, the two windshield devices are respectively installed at the ends of two adjacent cars 15. During installation, the mounting base 1 is fixed to the end of the carriage 15 by welding or bolting. When the two carriages 15 are connected by hooks or a hook-and-restraint device, the two outer airbags are pressed tightly together during the tightening process to ensure their airtightness and allow the windshield device to perform its functions of sound insulation, damping, and rain and snow protection. At the same time, the gas inside the inner airbag is compressed, giving it rigidity in all directions, increasing the rigidity of the vehicle connection device, and effectively mitigating vibration and impact between vehicles. Specifically:

[0029] like Figure 5 As shown, when the vehicle body vibrates, the outer airbag located on the inner side of the swing (right side of the diagram) is compressed, which in turn compresses and deforms the inner airbag on that side. The air inside the inner airbag is further compressed, and some of the compressed gas flows into the sealed air chamber 2 through the damping hole 7 on the inner airbag on the inner side of the swing. The outer airbag located on the outer side of the swing (left side of the diagram) is relatively open, reducing the degree of compression on the inner airbag. The air pressure inside the inner airbag on that side decreases. Since the sealed air chamber 2 is a rigid structure with a constant volume, some of the gas in the sealed air chamber 2 flows into the inner airbag located on the outer side of the swing through the damping hole 7. In the above process, the flow of gas through the damping hole 7 generates a damping force, which can effectively attenuate and suppress the vehicle body's swing vibration.

[0030] like Figure 6 As shown, when the vehicle body experiences nose-nodding vibration, the outer and inner airbags at one end of the carriage 15 are compressed and deformed. The air inside the inner airbag is further compressed, causing some of the compressed gas to flow through the damping hole 7 into the sealed air chamber 2. At the other end of the carriage 15, the outer airbag is relatively open, reducing the compression of the inner airbag inside. This lowers the air pressure inside the inner airbag, causing some of the gas in the sealed air chamber 2 to flow into that part of the inner airbag through the damping hole 7. The damping force generated during the flow of gas through the damping hole 7 effectively attenuates and suppresses the nose-nodding vibration of the vehicle body.

[0031] like Figure 7As shown, when the car body occurs longitudinal vibration, the outer air bag and the inner air bag at both ends of the car body are compressed, so that a part of the gas in the inner air bag enters the closed air chamber 2 through the damping hole 7, and the damping force generated in the process of the gas flowing through the damping hole 7 effectively attenuates and inhibits the longitudinal vibration of the car body.

[0032] Therefore, the multifunctional car-to-car outer windscreen connecting mechanism for high-speed trains not only can realize the functions of sound insulation, drag reduction, and rain and snow resistance, but also has stiffness and damping characteristics. It can completely or partially replace the car-to-car damper, can alleviate the impact between vehicles, effectively inhibit the vibration of the car body, and thus improve the stability of train operation. At the same time, due to the reduction of car-to-car dampers and other accessories, the weight of the car-to-car connecting system can be reduced, the time consumed for installing or removing the car-to-car damper during the vehicle marshalling and coupling or disassembly can be shortened, and the space occupied by the car-to-car damper can be saved.

[0033] As shown in the figure, Figure 1 The two ends of the flexible baffle 16 are fixedly connected with the two mounting seats 1 respectively, and the plurality of flexible baffles 16 are used to constrain the two outer air bags in the area between the two mounting seats 1, so as to ensure the stability and reliability of the windscreen device during operation.

[0034] In specific implementation, as shown in the figure, Figures 2 to 4 , Figures 8 to 10 The outer air bag includes two C-shaped outer half air bags 3, and the two outer half air bags 3 are oppositely arranged to make the outer air bag as a whole in the shape of a rectangular frame matching the shape of the mounting seat. The inner air bag includes two C-shaped inner half air bags 4, and the two inner half air bags are oppositely arranged to make the inner air bag as a whole in the shape of a rectangular frame matching the shape of the mounting seat 1. The outer half air bag 3 and the inner half air bag 4 correspond to each other, and both are fixedly connected with the mounting seat 1. The inner half air bag 4 is embedded on the side of the outer half air bag 3 close to the mounting seat 1, and the side of the inner half air bag 4 close to the mounting seat 1 is in communication with the closed air chamber 2 through the damping hole 7. The inner and outer pressure plates are fixedly arranged on the side of the mounting seat 1 close to the inner air bag, and the rigid partition plate 5 is arranged at the center position of the inner and outer pressure plates. The outer half air bag 3 and the inner half air bag 4 are fixedly installed on the inner and outer pressure plates by bolts, which can be conveniently installed and removed. In the above vibration type, the vehicle head shaking vibration is the main vibration form during vehicle driving. The two inner half air bags 4 are separated by the partition plate 5, and the two outer half air bags 3 are also separated by the partition plate 5, which can avoid the mutual influence between the two inner half air bags 4 and the two outer half air bags 3, so that more gas flows through the damping hole 7 to provide more damping force, and the damping effect is ensured.

[0035] Further, as shown in the figure, Figure 9 , Figure 10As shown, the inner air bag further comprises a connecting plate frame 8, the inner half air bag 4 is fixedly installed on one side of the connecting plate frame 8, and a plurality of damping pipes 6 are detachably connected to the other side of the connecting plate frame 8, and the aforementioned damping holes 7 are arranged in the damping pipes 6; a plurality of connecting holes 9 are formed on one side of the closed air chamber 2, the connecting plate frame 8 is connected with the inner and outer pressure plates through bolts, and the end of the damping pipe 6 away from the inner half air bag 4 is sealingly inserted into the connecting hole 9. After the damper device is used for a long time, the damping holes 7 are inevitably washed and enlarged by airflow, and the damping effect cannot be achieved. Through the above setting, the damping pipe 6 can be quickly replaced to replace the damping hole 7, and in addition, different lengths and diameters of the damping pipe 6 can be selected to change the length and size of the damping hole 7, so as to meet the use requirements of different road sections. In addition, after the damping pipe 6 is removed, the particle impurities generated in the inner air bag and the closed air chamber 2 can be easily blown out by using a blowing gun, thereby reducing the risk of blocking the damping hole 7 during operation.

[0036] Further, the aforementioned closed air chamber 2 is made of heat-conducting material, and the outer periphery of the closed air chamber 2 is provided with a heat dissipation fin plate 10, and the fins of the heat dissipation fin plate 10 are arranged in a direction perpendicular to the mounting seat 1. Since heat is generated during the airflow through the damping hole 7, and the compression ratio of air at different temperatures is quite different, the heat accumulation will greatly affect the damping effect. In the above design, the closed air chamber 2 is made of heat-conducting material and provided with a heat dissipation fin plate 10, which can effectively dissipate heat from the closed air chamber 2. The fins of the heat dissipation fin plate 10 are arranged in a direction perpendicular to the mounting seat 1, i.e. parallel to the direction of train running. During train running, external air can quickly flow through the fins to take away heat, thereby effectively dissipating heat from the air in the closed air chamber 2, so as to reduce the influence of heat generation on damping effect.

[0037] In specific implementation, the aforementioned heat dissipation fin plate 10 has a plurality of heat dissipation fin plates 10, each heat dissipation fin plate 10 is installed at a position close to the damping hole 7 to cool the air entering the closed air chamber 2 through the damping hole 7, and a certain space is left between the heat dissipation fin plates 10 to facilitate the installation of the flexible baffle 16 during coupling.

[0038] Further, as shown in FIG. 6, the aforementioned closed air chamber 2 is provided with a plurality of air holes 11, and the air holes 11 are arranged in the direction perpendicular to the mounting seat 1, i.e. parallel to the direction of train running. During train running, external air can quickly flow through the air holes 11 to take away heat, thereby effectively dissipating heat from the air in the closed air chamber 2, so as to reduce the influence of heat generation on damping effect. Figure 8 , Figure 9As shown, the inner half air bag 4 is provided with a first detection pipe 11 and a first air supplement pipe 12 in communication, and the outer half air bag 3 is provided with a second detection pipe 13 and a second air supplement pipe 14 in communication, the first detection pipe 11 and the second detection pipe 13 are both provided with a pressure gauge, and the first air supplement pipe 12 and the second air supplement pipe 14 are both connected with the train air compressor set through a control valve. The pressure in each inner half air bag 4 and outer half air bag 3 during train running can be monitored in real time through the pressure gauge, and when the detected air pressure value is lower than the set threshold value, there is a leakage in the detected inner half air bag 4 or outer half air bag 3. When leakage occurs, the air compressor set can supplement air to the inner half air bag 4 through the first air supplement pipe 12 to maintain the stiffness characteristics of the inner half air bag 4, or the air compressor set can supplement air to the outer half air bag 3 through the second air supplement pipe 14 to keep the two outer half air bags 3 on the two carriages 15 close, maintain the sound insulation and drag reduction, and resist rain and snow functions of the air baffle device, thereby temporarily ensuring the normal operation of the train.

[0039] The above description is only the preferred embodiment of the present application, and it should be understood that the present application is not limited to the form disclosed herein, and should not be considered as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein by the above teaching or related art or knowledge. Any modification and change made by those skilled in the art without departing from the spirit and scope of the present application shall be within the protection scope of the appended claims of the present application.

Claims

1. A high-speed train multifunctional inter-car outer windshield connecting mechanism, characterized in that, Two wind screen devices and several flexible baffles are included. The wind screen device comprises a mounting seat, an inner air bag and an outer air bag arranged in sequence, the mounting seat, the inner air bag and the outer air bag are all in the shape of a rectangular frame, a rigid closed air chamber is arranged on the mounting seat, the outer air bag and the inner air bag are both fixedly connected to one side of the mounting seat, the inner air bag is embedded into one side of the outer air bag close to the mounting seat, and the side of the inner air bag close to the mounting seat is in communication with the closed air chamber through a plurality of damping holes. The two wind screen devices are arranged oppositely, the two outer air bags are in close contact with each other, the two ends of the flexible baffles are fixedly connected to the two mounting seats respectively, and the several flexible baffles are used to constrain the two outer air bags in the area between the two mounting seats. The outer air bag comprises two outer half air bags in the shape of C, and the two outer half air bags are arranged oppositely so that the outer air bag as a whole is in the shape of a rectangular frame which is suitable for the shape of the mounting seat. The inner air bag comprises two inner half air bags in the shape of C, and the two inner half air bags are arranged oppositely so that the inner air bag as a whole is in the shape of a rectangular frame which is suitable for the shape of the mounting seat. The outer half air bag and the inner half air bag correspond to each other, and the outer half air bag and the inner half air bag are both fixedly connected to the mounting seat, the side of the inner half air bag away from the mounting seat is embedded into the side of the outer half air bag close to the mounting seat, and the side of the inner half air bag close to the mounting seat is in communication with the closed air chamber through a plurality of damping holes. A rigid partition plate is arranged at the center of the side of the mounting seat close to the inner air bag, and the partition plate is used to separate the two inner half air bags and the two outer half air bags.

2. The connecting mechanism of the multi-functional car exterior windshield of high-speed train according to claim 1, characterized in that, The inner air bag further comprises a connecting plate frame, the inner half air bag is fixedly installed on one side of the connecting plate frame, a plurality of damping tubes are detachably connected to the other side of the connecting plate frame, and the damping holes are arranged in the damping tubes. A plurality of connecting holes are formed in one side of the closed air chamber, the connecting plate frame is connected to the mounting seat through bolts, and one end of the damping tube away from the inner air bag is sealingly inserted into the connecting hole.

3. The connecting mechanism of the multi-functional car exterior windshield of high speed train according to claim 1, characterized in that, The closed air chamber is made of heat-conducting material, heat dissipation fins are arranged on the outer periphery of the closed air chamber, and the fins of the heat dissipation fins are arranged in a direction perpendicular to the mounting seat.

4. The connecting mechanism of the multi-functional car exterior windshield of high speed train according to claim 3, characterized in that, There are a plurality of heat dissipation fins, and the heat dissipation fins are arranged close to the damping holes.

5. The connecting mechanism of the multi-functional car exterior windshield of high speed train according to claim 1, characterized in that, A first detection tube and a first air supplementing tube are arranged in communication on the inner half air bag, a second detection tube and a second air supplementing tube are arranged in communication on the outer half air bag, pressure gauges are arranged on the first detection tube and the second detection tube, and the first air supplementing tube and the second air supplementing tube are connected to an air compressor set through control valves.

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