Railway vehicle chassis in-pillow transition structure, chassis and railway vehicle

Abstract

The invention discloses a railway vehicle chassis pillow inner transition structure, a chassis and a railway vehicle, and relates to the technical field of railway vehicles, the railway vehicle chassis pillow inner transition structure comprises a guide rail, the top of the guide rail is provided with a transition and auxiliary mechanism, the two input ends of a gas gathering pipe are each provided with a first air conditioner valve, and the input ends of the two first air conditioner valves are each provided with a funnel-shaped pipe; and filter screens are installed at the positions, close to the input ends, of the interiors of the two funnel-shaped pipes correspondingly, and second air conditioner valves are installed at the two output ends of the flow dividing pipe correspondingly, and the transition and auxiliary mechanism is arranged, so that dust can be attached to the surfaces of guide rails or the surfaces of rail wheels in a transition structure in a bottom frame pillow; and broken stones on the surface of the guide rail are cleaned, so that the friction force between the rail wheel and the guide rail is effectively ensured, the abrasion degree of the surface of the rail wheel is reduced, the safety of the rail vehicle moving on the guide rail is improved, and the use efficiency of the transition structure in the rail vehicle chassis pillow is improved.

Description

Technical Field

[0001] The invention relates to the technical field of rail vehicles, and in particular to a transition structure in a rail vehicle underframe pillow, an underframe and a rail vehicle. Background Art

[0002] Rail vehicles are tools for transporting passengers and goods. In a broad sense, rail vehicles refer to vehicles that must run along dedicated tracks. They generally have no power device and are mainly composed of a car body, a chassis, and a transition structure inside the chassis sleeper. However, they must be towed by a locomotive to run along the line.

[0003] In actual use, the existing transition structure inside the underframe sleeper for rail vehicles can be used together with the rail vehicle underframe and the guide rail, which is convenient for the locomotive to tow the rail vehicle to move later, but it does not have a cleaning function. When dust is attached to the guide rail surface or the rail wheel surface in the transition structure inside the underframe sleeper, and gravel appears on the guide rail surface, the dust will reduce the friction between the rail wheel and the guide rail, and the gravel will increase the wear degree of the rail wheel surface, that is, reduce the safety of the rail vehicle moving on the guide rail, thereby reducing the use efficiency of the transition structure inside the underframe sleeper of the rail vehicle.

[0004] Therefore, it is necessary to propose a new rail vehicle underframe sleeper inner transition structure, underframe and rail vehicle to solve the above-mentioned problems. Summary of the invention

[0005] The object of the present invention is to provide a transition structure inside the underframe sleeper of a rail vehicle, an underframe and a rail vehicle, so as to solve the problem that the existing transition structure inside the underframe sleeper for rail vehicles proposed in the above background technology does not have a cleaning function. When dust is attached to the surface of the guide rail or the surface of the rail wheel in the transition structure inside the underframe sleeper, and gravel appears on the surface of the guide rail, the dust will reduce the friction between the rail wheel and the guide rail, and the gravel will increase the degree of wear on the surface of the rail wheel, that is, reduce the safety of the rail vehicle moving on the guide rail, thereby reducing the use efficiency of the transition structure inside the underframe sleeper of the rail vehicle.

[0006] To achieve the above-mentioned object, the first aspect of the present invention provides a technical solution: a transition structure in a rail vehicle underframe sleeper, comprising a guide rail, a transition and auxiliary mechanism is arranged on the top of the guide rail, and an underframe mechanism is arranged on the top of the transition and auxiliary mechanism;

[0007] The transition and auxiliary mechanism includes four track wheels, two connecting blocks and a U-shaped frame, the tops of the two connecting blocks are fixed with a first three-way pipe, the upper side of each of the connecting blocks is provided with two symmetrical air vents, the inside of each of the vents is fixed with an air inlet pipe near the air inlet, the inside of each of the vents is fixed with an air jet pipe near the air outlet, the input end of each of the air jet pipes is equipped with a first air pipe, two second three-way pipes are arranged on opposite sides of the two first air pipes, a fixing frame is installed at the bottom of the U-shaped frame, an air collecting pipe is fixed inside the fixing frame, the two input ends of the air collecting pipe are equipped with a first air-conditioning valve, the input ends of the two first air-conditioning valves are equipped with a funnel-shaped pipe, the insides of the two funnel-shaped pipes are equipped with filter screens near the input ends, the output end of the air collecting pipe is equipped with a diverter pipe, the two output ends of the diverter pipe are equipped with a second air-conditioning valve, the output ends of the two second air-conditioning valves are equipped with an air diverter pipe, and the two output ends of each of the air diverter pipes are equipped with a second air pipe.

[0008] Preferably, the output end of each second air pipe is respectively connected to the input end of each first air pipe, the four first air pipes are divided into two groups, each group of the first air pipes is respectively located inside each first three-way pipe, the four second air pipes are divided into two groups, each group of the second air pipes is respectively located inside each second three-way pipe, and the four track wheels are all located between the two guide rails, so as to ensure the stable rolling movement operation of the transition and auxiliary mechanisms with the cooperation of the track wheels and the guide rails.

[0009] Preferably, the four track wheels are divided into two groups, and side frames are rotatably connected between the front surfaces of each group of track wheels and the rear surfaces of each group of track wheels through bearings. Two cylindrical grooves are provided on the upper side of each side frame, and a load-bearing spring is installed at the bottom of the inner wall of each cylindrical groove. A slider is slidably connected to the interior of each side frame, so that the bolster can move vertically up and down with the cooperation of the side frame and the slider.

[0010] Preferably, the eight sliders are divided into four groups, the top of each group of load-bearing springs are respectively installed on the bottom of each slider, the four sliders are divided into two groups, and a bolster is installed between the tops of each group of sliders. The first air pipes of each group are respectively located inside each bolster, so that under the action of the first air pipe, the gas delivered by the second air pipe can be delivered to the inside of the intake pipe.

[0011] A rail vehicle underframe comprises a underframe body, the top ends of the two second three-way pipes are fixed to the bottom of the underframe body, the U-shaped frame is fixed to the bottom of the underframe body, and a front surface of the underframe body and a rear surface of the underframe body are evenly distributed and installed with a plurality of single-hole blocks, so that the rail vehicle body can be stably fixed on the top of the underframe body under the action of the single-hole blocks.

[0012] Preferably, a limiting hole is provided on the top of the two bolsters, a connecting plate is provided on the top of the two bolsters, the tops of the two connecting plates are fixed to the bottom of the base frame body, and a rotating rod is provided inside the two limiting holes, so that the rotating rod can be rotated within a specified range under the action of the limiting holes.

[0013] Preferably, the top ends of the two rotating rods are respectively fixed to the bottom ends of the two connecting plates, and mounting blocks are fixed to the inner walls of the base body, and each mounting block is mounted on the top of the base body by a first bolt. A plurality of limit rods are movably penetrated through the top of the base body, so that under the action of the limit rods, the stability of the rail vehicle body on the base body can be improved.

[0014] Preferably, a circular ring block is provided on the top of the inner wall of each bolster, and the two circular ring blocks are respectively mounted on the bottom of the two rotating rods through second bolts, and a rail vehicle body is provided on the top of the base frame body, which can carry out passenger or cargo transportation operations under the action of the rail vehicle body. At the same time, with the cooperation of the circular ring block, the second bolt and the rotating rod, the connecting plate can be conveniently rotated on the bolster.

[0015] Preferably, the top end of each of the limit rods is fixed to the bottom of the rail vehicle body, each of the single-hole blocks is fixed to the surface of the rail vehicle body, and two symmetrical connecting rings are fixed to the bottom of the base frame body. Two stabilizing frames are fixed to the outer surfaces of the two connecting rings. Under the action of the stabilizing frames, the stability between the connecting rings and the base frame body can be improved. At the same time, with the cooperation of the connecting rings and the stabilizing frames, it is convenient for an external traction vehicle to drive the base frame body in the base frame mechanism to move.

[0016] Preferably, the four stabilizing frames are installed with the bottom of the base frame body by means of third bolts, the bottom ends of the two first three-way pipes are respectively fixed with the upper side of each connecting ring, and the two connecting blocks are respectively installed with the bottom of the two connecting rings by means of fourth bolts, so that the stability of the jet pipe can be ensured during operation under the action of the connecting blocks.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention can clean up dust attached to the surface of the guide rail or the surface of the rail wheel in the transition structure in the chassis sleeper by setting a transition and auxiliary mechanism, and gravel on the surface of the guide rail, thereby effectively ensuring the friction between the rail wheel and the guide rail, reducing the degree of wear on the surface of the rail wheel, and then improving the safety of the movement of the rail vehicle on the guide rail, that is, improving the utilization efficiency of the transition structure in the chassis sleeper of the rail vehicle. When the rail vehicle body moves, the controller, the first air-conditioning valve, the funnel-shaped pipe, the filter screen, the gas collecting pipe and the diversion pipe inside the external tractor can cooperate to deliver the filtered gas to the inside of the gas distribution pipe.

[0019] 2. The present invention can blow the delivered gas to the surface of the track wheel and the surface of the guide rail through the cooperation of the second air pipe, the first air pipe, the air inlet pipe, the air hole and the air jet pipe, thereby cleaning the dust on the surface of the track wheel and cleaning the dust or gravel on the surface of the guide rail. At the same time, with the cooperation of the track wheel, the side frame, the cylindrical groove, the load-bearing spring, the slider and the rocker, the chassis body can be guaranteed to move on the guide rail.

[0020] 3. The present invention can ensure a stable connection between the transition and auxiliary mechanisms and the rail vehicle body by setting up a chassis mechanism. When the rail vehicle body needs to be stably fixed on the top of the chassis body, the rail vehicle body can be installed on the top of the chassis body by directly utilizing the cooperation of the single-hole block and the limit rod. Subsequently, with the cooperation of the circular ring block, the second bolt and the rotating rod, the connecting plate can be rotated on the bolster. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A three-dimensional diagram of a transition structure in a rail vehicle underframe pillow, an underframe and a rail vehicle according to the present invention;

[0022] Figure 2 It is a partial stereoscopic diagram of a transition structure in a rail vehicle underframe pillow, an underframe and a rail vehicle according to the present invention;

[0023] Figure 3 It is a partial three-dimensional diagram of a transition structure in a rail vehicle underframe pillow, an underframe and a rail vehicle from an upward angle according to the present invention;

[0024] Figure 4 It is a partial three-dimensional diagram of a transition structure in a rail vehicle underframe pillow, an underframe and a rail vehicle from a top view according to the present invention;

[0025] Figure 5 It is a three-dimensional diagram of a transition structure in a rail vehicle underframe pillow, a transition and auxiliary mechanism of the underframe and the rail vehicle according to the present invention;

[0026] Figure 6It is a partial three-dimensional view of a transition structure in a rail vehicle underframe pillow, an underframe and a rail vehicle from another angle according to the present invention;

[0027] Figure 7 It is a partial three-dimensional view from another angle of a transition structure in a rail vehicle underframe pillow, a transition and auxiliary mechanism of the underframe and the rail vehicle of the present invention;

[0028] Figure 8 It is a three-dimensional structural schematic diagram of a transition structure in a rail vehicle underframe pillow, an underframe, a side frame of a rail vehicle and a cylindrical groove of the present invention;

[0029] Fig. 9 It is a three-dimensional structural schematic diagram of a transition structure in a rail vehicle underframe sleeper, a connecting plate, a rotating rod and a circular ring block of the underframe and the rail vehicle according to the present invention;

[0030] Fig.10 It is a partial cutaway stereoscopic diagram of a transition structure in a rail vehicle underframe pillow, an underframe and a rail vehicle according to the present invention;

[0031] Fig.11 The present invention is a three-dimensional structural schematic diagram of a transition structure in a rail vehicle underframe sleeper, an underframe and an underframe body of the rail vehicle, a connecting plate, a limiting hole and a mounting block.

[0032] In the figure:

[0033] 1. Guide rail; 2. Transition and auxiliary mechanism; 201. Track wheel; 202. Side frame; 203. Cylindrical groove; 204. Load spring; 205. Slider; 206. Rocker; 207. Connecting block; 208. First three-way pipe; 209. Air vent; 210. Air inlet pipe; 211. Jet pipe; 212. First air pipe; 213. Second three-way pipe; 214. U-shaped frame; 215. Air collecting pipe; 216. First air conditioning valve; 21 7. Funnel-shaped pipe; 218. Filter; 219. Diverter pipe; 220. Second air conditioning valve; 221. Second air pipe; 222. Fixing frame; 223. Diverter pipe; 3. Base frame mechanism; 301. Base frame body; 302. Single hole block; 303. Limiting hole; 304. Connecting plate; 305. Limiting rod; 306. Mounting block; 307. Rotating rod; 308. Ring block; 4. Rail vehicle body; 5. Connecting ring; 6. Stabilizing frame. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] See also Figure 1-Figure 11 As shown, the present invention provides a technical solution: a transition structure in a rail vehicle underframe sleeper, which includes a guide rail 1, a transition and auxiliary mechanism 2 is arranged on the top of the guide rail 1, a frame mechanism 3 is arranged on the top of the transition and auxiliary mechanism 2, the transition and auxiliary mechanism 2 includes four rail wheels 201, two connecting blocks 207 and a U-shaped frame 214, the tops of the two connecting blocks 207 are fixed with a first three-way pipe 208, the upper side of each connecting block 207 is provided with two symmetrical vents 209, the inside of each vent 209 is fixed with an air intake pipe 210 near the air inlet, the inside of each vent 209 is fixed with an air jet pipe 211 near the air outlet, and the input end of each air jet pipe 211 is installed with a first air pipe 212 Two second three-way pipes 213 are arranged on the opposite side of the two first air pipes 212, a fixing frame 222 is installed at the bottom of the U-shaped frame 214, and an air collecting pipe 215 is fixed inside the fixing frame 222, and the two input ends of the air collecting pipe 215 are installed with first air-conditioning valves 216, and the input ends of the two first air-conditioning valves 216 are installed with funnel-shaped pipes 217, and the insides of the two funnel-shaped pipes 217 are installed with filter screens 218 near the input ends, and the output end of the air collecting pipe 215 is installed with a diverter pipe 219, and the two output ends of the diverter pipe 219 are installed with second air-conditioning valves 220, and the output ends of the two second air-conditioning valves 220 are installed with air distribution pipes 223, and the two output ends of each air distribution pipe 223 are installed with a second air pipe 221.

[0036] according to Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the output end of each second air pipe 221 is connected to the input end of each first air pipe 212, respectively; the four first air pipes 212 are divided into two groups, each group of first air pipes 212 is respectively located inside each first three-way pipe 208; the four second air pipes 221 are divided into two groups, each group of second air pipes 221 is respectively located inside each second three-way pipe 213; the four track wheels 201 are all located between the two guide rails 1, so that with the cooperation of the track wheels 201 and the guide rails 1, the transition and auxiliary mechanism 2 can be ensured to perform stable rolling movement operations.

[0037] according to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7 and Figure 8As shown, the four track wheels 201 are divided into two groups, and the front surfaces of each group of track wheels 201 and the rear surfaces of each group of track wheels 201 are rotatably connected with side frames 202 through bearings. Two cylindrical grooves 203 are provided on the upper side of each side frame 202, and a load-bearing spring 204 is installed at the bottom of the inner wall of each cylindrical groove 203. A slider 205 is slidably connected to the inside of each side frame 202, so that the rocker 206 can move vertically up and down with the cooperation of the side frame 202 and the slider 205.

[0038] according to Figure 2 , Figure 3 , Figure 4 and Figure 7 As shown, the eight sliders 205 are divided into four groups, the top of each group of bearing springs 204 is respectively installed with the bottom of each slider 205, the four sliders 205 are divided into two groups, and a bolster 206 is installed between the tops of each group of sliders 205. Each group of first air pipes 212 is respectively located inside each bolster 206, so that under the action of the first air pipe 212, the gas delivered by the second air pipe 221 can be delivered to the inside of the intake pipe 210.

[0039] A rail vehicle underframe includes a frame body 301, the top ends of two second three-way pipes 213 are fixed to the bottom of the frame body 301, a U-shaped frame 214 is fixed to the bottom of the frame body 301, and a front surface of the frame body 301 and a rear surface of the frame body 301 are evenly distributed and installed with a plurality of single-hole blocks 302, so that the rail vehicle body 4 can be stably fixed on the top of the frame body 301 under the action of the single-hole blocks 302.

[0040] according to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 7 , Fig. 9 and Fig.11 As shown, the tops of the two bolsters 206 are provided with limiting holes 303, the tops of the two bolsters 206 are provided with connecting plates 304, the tops of the two connecting plates 304 are fixed to the bottom of the base frame body 301, and the interiors of the two limiting holes 303 are provided with rotating rods 307, so that the rotating rods 307 can be rotated within a specified range under the action of the limiting holes 303.

[0041] according to Figure 1 , Figure 4 , Figure 6 , Fig. 9 and Fig.11As shown, the top ends of the two rotating rods 307 are respectively fixed to the bottom ends of the two connecting plates 304, and the inner walls of the base frame body 301 are fixed with mounting blocks 306. Each mounting block 306 is mounted on the top of the base frame body 301 by a first bolt. A plurality of limit rods 305 are movably penetrated through the top of the base frame body 301, so that under the action of the limit rods 305, the stability of the rail vehicle body 4 on the base frame body 301 can be improved.

[0042] according to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 7 , Fig. 9 and Fig.11 As shown, a circular ring block 308 is provided on the top of the inner wall of each bolster 206, and the two circular ring blocks 308 are respectively installed with the bottom of the two rotating rods 307 through the second bolts. A rail vehicle body 4 is provided on the top of the base frame body 301, and passenger or cargo transportation operations can be performed under the action of the rail vehicle body 4. At the same time, with the cooperation of the circular ring block 308, the second bolt and the rotating rod 307, the connecting plate 304 can be conveniently rotated on the bolster 206.

[0043] according to Figure 1 , Figure 3 , Figure 4 , Figure 6 and Fig.11 As shown, the top of each limit rod 305 is fixed to the bottom of the rail vehicle body 4, and each single-hole block 302 is fixed to the surface of the rail vehicle body 4. Two symmetrical connecting rings 5 ​​are fixed to the bottom of the base frame body 301, and two stabilizing frames 6 are fixed to the outer surfaces of the two connecting rings 5. Under the action of the stabilizing frames 6, the stability between the connecting rings 5 ​​and the base frame body 301 can be improved. At the same time, with the cooperation of the connecting rings 5 ​​and the stabilizing frames 6, it is convenient for an external traction vehicle to drive the base frame body 301 in the base frame mechanism 3 to move.

[0044] according to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 , Fig.10 and Fig.11 As shown, the four stabilizing frames 6 are installed with the bottom of the base frame body 301 by the third bolt, the bottom ends of the two first three-way pipes 208 are respectively fixed with the upper side of each connecting ring 5, and the two connecting blocks 207 are respectively installed with the bottom of the two connecting rings 5 ​​by the fourth bolt, so that the stability of the jet pipe 211 during operation can be ensured under the action of the connecting block 207.

[0045] The effect achieved by the whole mechanism is: when the rail vehicle body 4 is needed to transport passengers or goods, the transition and auxiliary mechanism 2 is first connected to the external tractor by using the connecting ring 5 and the fixing pin, and then the first air conditioning valve 216 and the second air conditioning valve 220 are connected to the controller on the tractor through wires. When everything is ready, the cooperation of the external tractor, the connecting ring 5, the fixing pin, the stabilizing frame 6 and the guide rail 1 is directly used to drive the chassis body 301 on the chassis mechanism 3 to move, and the moving chassis body 301 will directly drive the rail vehicle body 4 to move under the cooperation of multiple limit rods 305 and multiple single hole blocks 302, and at the same time, the moving chassis body 301 will also drive the two bolsters 206 to move synchronously under the cooperation of the connecting plate 304, the rotating rod 307, the mounting block 306, and the circular ring block 308. When the two bolsters 206 move synchronously, each bolster 206 that moves at this time will, in cooperation with the corresponding slider 205, cylindrical groove 203, load-bearing spring 204 and side frame 202, drive the corresponding rail wheel 201 to roll on the guide rail 1, thereby transporting passengers carried or loaded goods in the rail vehicle body 4.At the same time, when the rail vehicle body 4 moves forward, the controller inside the tractor directly controls the transition and the first air-conditioning valve 216 and the second air-conditioning valve 220 on the auxiliary mechanism 2 for managing the forward movement of the rail vehicle body 4 to open. When the first air-conditioning valve 216 and the second air-conditioning valve 220 are both opened, when the rail vehicle body 4 moves, the gas in the environment will be directly injected into the corresponding funnel-shaped tube 217, and then the injected gas will be directly filtered out of the dust or foreign matter mixed in the gas with the cooperation of the corresponding filter 218, and then the filtered gas will be directly transported to the first air-conditioning valve 216 connected thereto, and then transported to the inside of the gas collecting pipe 215 connected thereto, and then the gas entering the gas collecting pipe 215 will be directly transported to the inside of the shunt pipe 219 with the cooperation of another closed first air-conditioning valve 216, and then the gas entering the shunt pipe 219 will be directly transported to the second air-conditioning valve 220 with the cooperation of another second air-conditioning valve 220. The gas enters the interior of the air pipe 221 and is finally transported to the interior of the corresponding air distribution pipe 223. When the gas is transported to the interior of the air distribution pipe 223, the gas transported in is directly diverted and introduced into the interior of the two second air pipes 221 under the action of the air distribution pipe 223. Then, the gas entering the interior of the two second air pipes 221 will directly enter the interior of the first air pipe 212 connected thereto, and then the gas entering the interior of the two first air pipes 212 will directly enter the air intake pipe 210 connected thereto, and then the gas is directly transported to the corresponding air vent 209, and then the gas entering the interior of the air vent 209 will directly enter the interior of the injection pipe 211 connected thereto, and then the gas entering the interior of the injection pipe 211 will be directly ejected and sprayed on the surface of the track wheel 201 and the surface of the guide rail 1, that is, the dust on the surface of the track wheel 201 can be cleaned up, and the dust or gravel on the surface of the guide rail 1 can be cleaned up, thereby ensuring the safety of the rail vehicle during movement, and then improving the utilization efficiency of the transition structure in the rail vehicle chassis sleeper.

[0046] When the rail vehicle body 4 moves in the reverse direction, the controller inside the external tractor is directly used to control the reverse first air-conditioning valve 216 and the second air-conditioning valve 220 to start, and the forward first air-conditioning valve 216 and the second air-conditioning valve 220 are closed. At this time, the rail vehicle body 4 moving in the reverse direction will directly allow the corresponding funnel-shaped tube 217 to be filled with gas, and then the gas will directly repeat the above operation steps, directly transporting the filtered gas to the inside of the corresponding injection pipe 211, and then spraying it on the surface of the corresponding track wheel 201 and the guide rail 1, cleaning the dust on the surface of the track wheel 201, and cleaning the dust or gravel on the surface of the guide rail 1.

[0047] Among them, the guide rail 1 is an important component of the track system, which is composed of multiple components, including sleepers, rail beds, rail heads and rail waists. The sleeper, also known as the ballast, is a rectangular load-bearing structure, usually made of wood, concrete or steel. It is located under the track bed and is responsible for bearing the weight on the track and distributing it to the track bed. The rail bed is a flat foundation that supports the sleepers. It is usually made of stone, gravel or concrete. Its function is to provide a stable foundation to maintain the levelness and stability of the track. The track consists of two steel rails, namely the rail head and the rail waist. The rail head is the raised part on the top of the track that contacts the wheels and bears the pressure of the wheels. The rail waist is the middle part connecting the rail head. Its shape and size help maintain the stability of the track.

[0048] The bolster 206, also known as a rocker or a swing bolster, is a device used to absorb shock and alleviate vibration during train travel. It is mainly used to improve the travel stability and ride comfort of the train. When the rail vehicle body 4 is traveling, the bolster 206 can absorb and disperse the vibration and impact force generated by the rail vehicle body 4 during travel, thereby reducing the vibration between the guide rail 1 and the rail wheel 201.

[0049] The first air-conditioning valve 216 and the second air-conditioning valve 220 are both composed of a valve body, a valve core, an electric device, a control circuit and accessories. The principle is: in the initial state, the valve core is in a closed position, the valve is closed, and the fluid cannot flow through the valve body. When a control signal is received, the control circuit will convert the signal into a control signal of the electric device. According to the control signal, the electric device will start the electric actuator or the electric drive, and the electric actuator will start the electric motor to drive the movement of the valve core through the transmission device. The electric drive will control the position of the valve core according to the control signal. Through the control of the electric device, the valve core is moved to the corresponding position, the valve is opened or closed, and the fluid can flow through the valve body or be blocked.

[0050] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rail vehicle underframe sleeper internal transition structure, comprising a guide rail (1), characterized in that: A transition and auxiliary mechanism (2) is arranged on the top of the guide rail (1), and a base frame mechanism (3) is arranged on the top of the transition and auxiliary mechanism (2); The transition and auxiliary mechanism (2) comprises four track wheels (201), two connection blocks (207) and a U-shaped frame (214); a first three-way pipe (208) is fixed on the top of each of the two connection blocks (207); two symmetrical air vents (209) are provided on the upper side of each of the connection blocks (207); an air inlet pipe (210) is fixed inside each of the air vents (209) near the air inlet; an air jet pipe (211) is fixed inside each of the air vents (209) near the air outlet; a first air pipe (212) is installed at the input end of each of the air jet pipes (211); two second three-way pipes (213) are provided on opposite sides of the two first air pipes (212); and a bottom of the U-shaped frame (214) is provided with a plurality of air vents (210) and a plurality of air vents (210) are provided. A fixing frame (222) is installed, an air collecting pipe (215) is fixed inside the fixing frame (222), first air conditioning valves (216) are installed at both input ends of the air collecting pipe (215), funnel-shaped pipes (217) are installed at both input ends of the two first air conditioning valves (216), filters (218) are installed inside the two funnel-shaped pipes (217) near the input ends, a flow divider (219) is installed at the output end of the air collecting pipe (215), second air conditioning valves (220) are installed at both output ends of the flow divider (219), air distribution pipes (223) are installed at both output ends of the two second air conditioning valves (220), and second air pipes (221) are installed at both output ends of each of the air distribution pipes (223).

2. The rail vehicle underframe sleeper inner transition structure according to claim 1, characterized in that: The output end of each second air pipe (221) is respectively connected to the input end of each first air pipe (212); the four first air pipes (212) are divided into two groups; each group of the first air pipes (212) is respectively located inside each first three-way pipe (208); the four second air pipes (221) are divided into two groups; each group of the second air pipes (221) is respectively located inside each second three-way pipe (213); and the four track wheels (201) are all located between the two guide rails (1).

3. The rail vehicle underframe sleeper inner transition structure according to claim 1, characterized in that: The four track wheels (201) are divided into two groups. The front surfaces of each group of track wheels (201) and the rear surfaces of each group of track wheels (201) are rotatably connected to a side frame (202) via a bearing. Two cylindrical grooves (203) are provided on the upper side of each side frame (202). A bearing spring (204) is installed at the bottom of the inner wall of each cylindrical groove (203). A slider (205) is slidably connected to the inside of each side frame (202).

4. The rail vehicle underframe sleeper inner transition structure according to claim 3, characterized in that: The eight sliders (205) are divided into four groups, the top of each group of the bearing springs (204) is respectively installed on the bottom of each slider (205), the four sliders (205) are divided into two groups, a bolster (206) is installed between the tops of each group of the sliders (205), and the first air pipe (212) of each group is respectively located inside each bolster (206).

5. A rail vehicle underframe, characterized in that: The rail vehicle underframe sleeper internal transition structure as described in any one of claims 1 to 4 is used, comprising a frame body (301), the top ends of the two second three-way pipes (213) are fixed to the bottom of the frame body (301), the U-shaped frame (214) is fixed to the bottom of the frame body (301), and a plurality of single-hole blocks (302) are evenly distributed and installed on the front surface of the frame body (301) and the rear surface of the frame body (301).

6. The rail vehicle underframe according to claim 5, characterized in that: The tops of the two bolsters (206) are each provided with a limiting hole (303), the tops of the two bolsters (206) are each provided with a connecting plate (304), the tops of the two connecting plates (304) are each fixed to the bottom of the base frame body (301), and the interiors of the two limiting holes (303) are each provided with a rotating rod (307).

7. The rail vehicle underframe according to claim 6, characterized in that: The top ends of the two rotating rods (307) are respectively fixed to the bottom ends of the two connecting plates (304); the inner wall of the base frame body (301) is fixed with a mounting block (306); each mounting block (306) is mounted on the top of the base frame body (301) by a first bolt; and a plurality of limit rods (305) are movably penetrated through the top of the base frame body (301).

8. The rail vehicle underframe according to claim 7, characterized in that: A circular ring block (308) is arranged at the top of the inner wall of each bolster (206), and the two circular ring blocks (308) are respectively mounted on the bottom of the two rotating rods (307) through second bolts, and a rail vehicle body (4) is arranged on the top of the base frame body (301).

9. The rail vehicle underframe according to claim 8, characterized in that: The top end of each of the limit rods (305) is fixed to the bottom of the rail vehicle body (4), each of the single-hole blocks (302) is fixed to the surface of the rail vehicle body (4), and two symmetrical connecting rings (5) are fixed to the bottom of the base frame body (301), and two stabilizing frames (6) are fixed to the outer surfaces of the two connecting rings (5).

10. The rail vehicle underframe according to claim 9, characterized in that: The four stabilizing frames (6) are all mounted on the bottom of the base frame body (301) via third bolts, the bottom ends of the two first three-way pipes (208) are respectively fixed to the upper side of each connecting ring (5), and the two connecting blocks (207) are respectively mounted on the bottom of the two connecting rings (5) via fourth bolts.

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