Rail surface sweeper

Abstract

The invention relates to a rail surface sweeper which comprises a hoisting seat, a hanging air cylinder and a sweeping pole shoe. The hoisting seat is used for being installed on a train, the suspension air cylinder comprises a cylinder barrel, a piston, a piston rod and an elastic reset piece, the upper end of the cylinder barrel is connected with the hoisting seat, and the piston is arranged in the cylinder barrel in a sliding mode and divides the interior of the cylinder barrel into a rodless cavity and a rod cavity which are arranged up and down; the upper end of the piston rod is connected to the piston, and the lower end of the piston rod extends out of the lower end of the cylinder barrel and is connected with the cleaning pole shoe; the cleaning pole shoe can move downwards in the state that the rodless cavity is filled with air and make contact with a rail below a train, and the elastic reset piece is arranged in the cylinder barrel so as to reset the piston after air is exhausted in the rodless cavity. The rail surface cleaning, ice breaking and snow removing effects can be achieved in the normal movement process of a train, adhesion of train wheel rails is improved, the structure is simple, and the size is small.

Description

Technical Field

[0001] The present invention relates to the technical field of rail vehicles, and particularly to a rail surface sweeper. Background Art

[0002] With the development of train braking technology, higher requirements are also put forward for braking safety. The braking methods adopted on rail transit vehicles are mainly adhesion braking. Under low adhesion conditions caused by rain, snow, and other reasons, problems such as extended braking distance and train sliding are likely to occur, which will cause the train to slow down or stop operating. In severe cases, safety accidents may be triggered. In some areas, there is a long ice and snow period in winter. The ballast bed is snow-covered and the line is buried due to natural weather such as snowfall or blowing snow in many train operation sections. Moreover, the snow on the rail surface is easily melted into water after being pressed by the wheels, and the accumulated water is extremely easy to freeze under low temperature conditions, further reducing the wheel-rail adhesion. Therefore, it is of great significance to clean the rail surface to improve the wheel-rail adhesion under low adhesion conditions caused by rain, snow, and other reasons.

[0003] Currently, on high-speed multiple units, locomotives, and urban rail vehicles, spraying particulate matter (such as sanding) and tread cleaning methods are mainly adopted, which all play a certain role in improving the adhesion state, can reduce wheel sliding and abrasion. The tread cleaner can clean the dirt on the wheel surface, improve the adhesion between the wheel and the rail through the friction between the grinding element and the wheel, and at the same time play a role in repairing the tiny surface damage on the wheel tread, but it has no effect on improving the rail surface adhesion; the effect of sanding on improving adhesion is limited, and it is easy to cause pollution. The sand and gravel may damage the trackside equipment, and the cleaning difficulty is relatively large, increasing the labor cost.

[0004] In practical applications, currently, a rail cleaning vehicle is mainly used to clean the rail surface. Due to its large structure and slow speed, the rail cleaning vehicle can only clean in sections where there is no train operation for the time being. Since it cannot affect the normal operation of the train, the rail surface cannot be cleaned in real time when the train runs frequently, and the cleaning efficiency is relatively low. The overall structure is large and complex, and a driver and staff need to be equipped, and the use and maintenance costs are relatively high. Summary of the Invention

[0005] The purpose of the present invention is to provide a rail surface sweeper, which can clean the rail surface, break ice and remove snow during the normal movement of the train, improve the adhesion between the train wheels and the rail, and has a simple structure and a small volume.

[0006] The object of the present invention is achieved as follows. A rail surface sweeper includes a hoisting seat, a suspension cylinder, and a cleaning pole shoe. The hoisting seat is used for mounting on a train. The suspension cylinder includes a cylinder barrel, a piston, a piston rod, and an elastic reset member. The upper end of the cylinder barrel is connected to the hoisting seat. The piston is slidably disposed within the cylinder barrel and divides the interior of the cylinder barrel into a rodless chamber and a rod chamber which are arranged vertically. The piston rod is disposed within the rod chamber, its upper end is connected to the piston, and its lower end extends out of the lower end of the cylinder barrel and is connected to the cleaning pole shoe. The cleaning pole shoe can move downward in a state where the rodless chamber is filled with air and contact the track below the train. The elastic reset member is disposed within the cylinder barrel to reset the piston after the rodless chamber is exhausted.

[0007] In a preferred embodiment of the present invention, the upper end of the cylinder barrel is hinged or elastically connected to the hoisting seat, and the lower end of the piston rod is hinged or elastically connected to the cleaning pole shoe.

[0008] In a preferred embodiment of the present invention, the rail surface sweeper further includes at least one set of guiding mechanisms. The guiding mechanism includes a guiding rod and a guiding cylinder. The upper end of the guiding rod is fixedly connected to the hoisting seat, and the lower end of the guiding rod is slidably inserted into the guiding cylinder. The lower end of the guiding cylinder is fixedly connected to the cleaning pole shoe.

[0009] In a preferred embodiment of the present invention, the rail surface sweeper further includes a force transmission rod. The axial direction of the force transmission rod is arranged obliquely downward along the running direction of the train. The upper end of the force transmission rod is hinged to the hoisting seat, the lower end of the force transmission rod is hinged to the cleaning pole shoe, the upper end of the cylinder barrel is hinged or elastically connected to the hoisting seat, and the lower end of the piston rod is hinged to the middle of the force transmission rod.

[0010] In a preferred embodiment of the present invention, the elastic reset member is a compression spring, which is disposed within the rod chamber and its two ends respectively abut against the piston and the bottom surface of the cylinder barrel.

[0011] In a preferred embodiment of the present invention, the rodless chamber is also connected to a air supply pipeline in a switchable manner. The air supply pipeline is used for connecting to the main air pipe of the train.

[0012] In a preferred embodiment of the present invention, a pressure reducing valve, a on-off solenoid valve, and a bypass pipeline are sequentially provided on the air supply pipeline along the gas transmission direction. An exhaust switch valve is provided on the bypass pipeline.

[0013] In a preferred embodiment of the present invention, a check valve and a manual switch valve are also sequentially provided on the air supply pipeline along the gas transmission direction at a position close to the main air pipe of the train.

[0014] In a preferred embodiment of the present invention, the rail surface sweeper further includes a controller, which is electrically connected to the pressure reducing valve, the on-off solenoid valve, and the exhaust switch valve.

[0015] In a preferred embodiment of the present invention, the hoisting seat is used for connecting to the bogie crossbeam of the train.

[0016] As described above, the rail surface sweeper of the present invention is installed on a rail train and can clean the rail surface during the train operation. In extreme weather, it can break ice and remove snow on the rail surface, and has a relatively high cleaning efficiency. The structure and control of the rail surface sweeper are simple, its volume and weight are small, and daily maintenance is convenient; it can significantly improve the adhesion between the train wheels and the rails and enhance the running safety of the train. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following drawings are only intended to illustrate and explain the present invention schematically and do not limit the scope of the present invention.

[0018] Wherein:

[0019] Figure 1 is a schematic structural diagram of the rail surface sweeper provided by the present invention.

[0020] Figure 2 is another schematic structural diagram of the rail surface sweeper provided by the present invention.

[0021] Figure 3 is a schematic diagram of the air supply pipeline provided by the present invention.

[0022] Description of the reference numerals in the drawings:

[0023] 1. Hoisting seat;

[0024] 2. Suspension cylinder; 21. Cylinder barrel; 22. Piston; 23. Piston rod; 24. Elastic reset member;

[0025] 3. Cleaning pole shoe;

[0026] 4. Guide mechanism; 41. Guide rod; 42. Guide cylinder;

[0027] 5. Force transmission rod;

[0028] 6. Air supply pipeline; 61. Check valve; 62. Manual switch valve; 63. Pressure reducing valve; 64. On-off solenoid valve; 65. Bypass pipeline; 651. Exhaust switch valve;

[0029] 7. Bogie cross beam;

[0030] 8. Rail;

[0031] 9. Main air pipe of the train. DETAILED DESCRIPTION OF THE INVENTION

[0032] In order to have a clearer understanding of the technical features, objectives and effects of the present invention, the specific embodiments of the present invention will now be described with reference to the drawings.

[0033] As Figures 1 to 3As shown, the present embodiment provides a track surface cleaner, including a lifting seat 1, a suspension cylinder 2 and a cleaning pole shoe 3; the lifting seat 1 is used to be installed on a train (for example, installed on a train bogie), the suspension cylinder 2 includes a cylinder barrel 21, a piston 22, a piston rod 23 and an elastic reset member 24, the upper end of the cylinder barrel 21 is connected to the lifting seat 1, the piston 22 can be slidably arranged in the cylinder barrel 21 and divide the interior of the cylinder barrel 21 into a rodless chamber and a rod chamber arranged in an upper and lower manner; the piston rod 23 is arranged in the rod chamber, the upper end of which is connected to the piston 22, and the lower end of which extends out of the lower end of the cylinder barrel 21 and is connected to the cleaning pole shoe 3; the cleaning pole shoe 3 can move downward and contact the track 8 under the train when the rodless chamber is filled with air, and the elastic reset member 24 is arranged in the cylinder barrel 21 to reset the piston 22 after the rodless chamber is exhausted.

[0034] The train here can be, for example, a high-speed EMU, a locomotive, and an urban rail vehicle, and the suspension cylinder 2 is a single-acting cylinder. When the rail surface cleaning is applied, after the air is filled into the rodless cavity, the piston 22 is pushed to drive the piston rod 23 to move downward, so as to drive the cleaning pole shoe 3 to move downward to the working position, contact the surface of the track 8 (such as a steel rail), and produce friction cleaning and viscosity-increasing effects on the surface of the track 8. When the rail surface cleaning is relieved, the rodless cavity is exhausted, and the piston 22 is reset under the action of the elastic reset member 24, and the cleaning pole shoe 3 moves up and resets to the relief position.

[0035] Therefore, the track surface cleaner of this embodiment is installed on the rail train, and can clean the track surface during the operation of the train. In extreme weather, it can break ice and remove snow on the track surface, and the cleaning efficiency is relatively high. The track surface cleaner has a simple structure and control, small size and weight, and simple daily maintenance; it can significantly improve the wheel-rail adhesion of the train and improve the operation safety of the train.

[0036] In a specific implementation, the hoisting seat 1 is used to connect with the bogie crossbeam 7 of the train. The hoisting seat 1 can be welded on the bogie crossbeam 7, and the structure of the hoisting seat 1 is determined according to the specific structure of the crossbeam. The entire track surface cleaner can be installed on the bogie of the existing train, without replacing or redesigning the bogie, and only the local interface of the bogie needs to be adaptively modified and designed. The manufacturing cost and maintenance cost are low, and it has good economy.

[0037] The elastic reset member 24 can be, for example, a compression spring, which is arranged in the rod cavity and has two ends respectively abutting against the bottom surface of the piston 22 and the cylinder 21. The design of the stroke of the suspension cylinder 2 should take into account factors such as the floating amount of the bogie frame, the wear of the new / old wheels, the installation error, and the wear of the sweeper.

[0038] Furthermore, in order to make the structural force more reasonable, the following two methods can be adopted:

[0039] The first one: reference Figure 1, the upper end of the cylinder barrel 21 is hinged or elastically connected to the lifting seat 1 to compensate for the displacement generated by the sweeper during operation; the lower end of the piston rod 23 is hinged or elastically connected to the cleaning pole shoe 3; the hinged or elastic connection method ensures that the suspension cylinder 2 and the piston rod 23 only bear axial forces and do not bear radial forces.

[0040] Furthermore, the rail surface sweeper further includes at least one set of guiding mechanisms 4. The guiding mechanism 4 includes a guiding rod 41 and a guiding cylinder 42. The upper end of the guiding rod 41 is fixedly connected to the lifting seat 1, and the lower end of the guiding rod 41 is inserted into the guiding cylinder 42 in a relatively movable manner. The lower end of the guiding cylinder 42 is fixedly connected to the cleaning pole shoe 3.

[0041] For example, the number of guiding mechanisms 4 can be set to two groups and symmetrically arranged on both sides of the suspension cylinder 2 to maintain structural stability. The guiding rod 41 can be fixed on the lifting seat 1 or the bogie crossbeam 7, and the fixing method can be welding or other rigid connections; the guiding cylinder 42 can be welded or fixed to the cleaning pole shoe 3 by other rigid connection methods. The guiding rod 41 and the guiding cylinder 42 can move freely up and down, and there is a small clearance fit in the horizontal direction. When the cleaning pole shoe 3 acts on the surface of the track 8, a lateral force will be generated. The cleaning pole shoe 3 acts the lateral force on the guiding cylinder 42, and the guiding cylinder 42 acts the lateral force on the guiding rod 41, and finally the lateral force is transmitted to the bogie crossbeam 7.

[0042] In the first structure, when the rail surface sweeper is working, appropriate air pressure is output into the rodless cavity of the suspension cylinder 2. After the suspension cylinder 2 is filled with air, the piston rod 23 is pushed downward by the air pressure to overcome the spring force. The piston rod 23 acts the downward force on the cleaning pole shoe 3, and the cleaning pole shoe 3 acts the force on the track 8. As the train moves forward, the cleaning pole shoe 3 performs cleaning, ice breaking and snow removing actions on the surface of the track 8, improving the adhesion between the train wheels and the rails. When the rail surface sweeper is relieved, the compressed air in the rodless cavity of the suspension cylinder 2 is discharged, and the suspension cylinder 2 is reset by the spring force, and the cleaning pole shoe 3 rises.

[0043] Second: Refer to Figure 2 , the rail surface sweeper further includes a force transmission rod 5. The axial direction of the force transmission rod 5 is arranged obliquely downward along the train running direction v; the upper end of the force transmission rod 5 is hinged to the lifting seat 1, the lower end of the force transmission rod 5 is hinged to the cleaning pole shoe 3, the upper end of the cylinder barrel 21 is hinged or elastically connected to the lifting seat 1 to compensate for the displacement generated by the sweeper during operation; the lower end of the piston rod 23 is hinged to the middle of the force transmission rod 5. The hinged or elastic connection method ensures that the suspension cylinder 2 and the piston rod 23 only bear axial forces and do not bear radial forces.

[0044] In the second structure, when the rail surface cleaner is working, appropriate air pressure is output to the rodless chamber of the suspension cylinder 2. After the suspension cylinder 2 is filled with air, the piston rod 23 is pushed downward by the air pressure to overcome the spring force. The piston rod 23 acts on the force transfer rod 5. At this time, the hinge point between the force transfer rod 5 and the lifting seat 1 is used as the fulcrum, and the cleaning pole shoe 3 is pushed downward by using the lever principle. The cleaning pole shoe 3 acts on the track 8. As the train moves forward, the cleaning pole shoe 3 produces a cleaning, ice-breaking and snow-removing effect on the surface of the track 8, improving the adhesion between the train wheels and the rails. When the cleaning pole shoe 3 acts on the track 8, a lateral force will be generated. The cleaning pole shoe 3 acts the lateral force on the force transfer rod 5, and the force transfer rod 5 acts on the lifting seat 1. Finally, the force is transmitted to the bogie crossbeam 7. When the rail surface cleaner is relieved, the compressed air in the rodless chamber of the suspension cylinder 2 is discharged, and the suspension cylinder 2 is reset by the spring force, and the cleaning pole shoe 3 rises.

[0045] In the above two structural forms, in the first structural form, the cylinder barrel 21 and the piston rod 23 are respectively hinged or elastically connected to the lifting seat 1 and the cleaning pole shoe 3, and a guiding mechanism 4 is provided. The lower end of the piston rod 23 is directly connected to the cleaning pole shoe 3. When working, a frictional force is generated between the cleaning pole shoe 3 and the track 8, and the frictional force is transmitted to the bogie through the guiding rod 41 and the guiding cylinder 42. In the second structural form, the cylinder barrel 21 is hinged or elastically connected to the lifting seat 1, and a force transfer rod 5 is provided. The force transfer rod 5 is connected to the lifting seat 1, the piston rod 23 and the cleaning pole shoe 3 by means of hinges. The lower end of the piston rod 23 is indirectly connected to the cleaning pole shoe 3 through the force transfer rod 5. When working, a frictional force is generated between the cleaning pole shoe 3 and the track 8, and the frictional force is transmitted to the bogie through the force transfer rod 5. For these two structures, the force is reasonably applied and the structure is reliable. When installing the first form, the installation direction does not need to be considered, but the overall structure is heavier than the second form; when installing the second form, the installation direction needs to be considered, which is related to the running direction of the train, but the overall structure is simpler and lighter. Which structural form to adopt specifically can be selected according to actual needs.

[0046] Furthermore, the rodless chamber is also connected to an air supply pipeline 6 in a switchable manner. The air supply pipeline 6 is used to connect to the main air pipe 9 of the train to facilitate the filling of air into the rodless chamber.

[0047] Specifically, referring to Figure 3 , a one-way valve 61, a manual switch valve 62, a pressure reducing valve 63, a on-off solenoid valve 64 and a bypass pipeline 65 are sequentially provided on the air supply pipeline 6 along the gas transmission direction. One end of the bypass pipeline 65 is connected to the air supply pipeline 6 in parallel, and the other end is an open end. An exhaust switch valve 651 is provided on the bypass pipeline 65. The one-way valve 61 only allows the gas to flow in the direction of the rodless chamber. The above-mentioned manual switch valve 62 can adopt an isolating cock, which is normally in the open state and is manually closed in case of an emergency.

[0048] The rail surface cleaner further includes a controller, which is electrically connected to the pressure reducing valve 63, the on-off solenoid valve 64 and the exhaust switch valve 651 to achieve automatic control. The controller can be set separately or integrated into the existing braking control device of the train, and the control method is simple.

[0049] When rail surface cleaning is required, the controller controls the on-off solenoid valve 64 to open, and the gas in the main train air pipe 9 enters the rodless cavity of the suspension cylinder 2 after being decompressed by the pressure reducing valve 63. After the suspension cylinder 2 is inflated, it overcomes the spring force and acts, the piston rod 23 extends, and the cleaning shoe 3 will descend to the rail surface of the track 8; when rail surface cleaning is to be released, the controller controls the on-off solenoid valve 64 to close and opens the exhaust switch valve 651, the suspension cylinder 2 exhausts, and returns by the spring force, the piston rod 23 retracts, and the cleaning shoe 3 is lifted to the high position.

[0050] In some embodiments, the rail surface cleaner has two modes: automatic control and manual control, and can be automatically applied by the system or manually controlled by the driver. Under low adhesion conditions caused by rain, snow and other reasons, when the train detects large wheel spin and skidding, the rail surface cleaner can be automatically applied through the controller to clean and increase the adhesion of the rail surface; when the skidding disappears, the rail surface cleaner can be automatically released. The rail surface cleaner can also have a fault detection and fault feedback function to monitor the cylinder pressure in real time.

[0051] It can be understood that the main function of the rail surface cleaner is to clean the rail surface, so it is not necessary to configure it for each car, and it can be installed only on the bogie of the leading car of each train. Two rail surface cleaners are symmetrically arranged on the bogie of the leading car to clean the two tracks 8 respectively. The end of the air supply pipeline 6 far from the main train air pipe 9 is simultaneously connected to the two suspension cylinders 2 of the two rail surface cleaners (that is, Figure 3 the left suspension cylinder and the right suspension cylinder in

[0052] to inflate or exhaust the two suspension cylinders 2 at the same time.

[0053] The above are only illustrative specific embodiments of the present invention and are not intended to limit the scope of the present invention. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A rail surface cleaner, characterized in that: Includes a lifting seat, a suspension cylinder and a cleaning pole shoe; The lifting seat is used to be installed on the train, and the suspension cylinder includes a cylinder barrel, a piston, a piston rod and an elastic reset member. The upper end of the cylinder barrel is connected to the lifting seat, and the piston is slidably arranged in the cylinder barrel and divides the interior of the cylinder barrel into a rodless chamber and a rod chamber arranged in an upper and lower manner; the piston rod is arranged in the rod chamber, the upper end of which is connected to the piston, and the lower end of which extends out of the lower end of the cylinder barrel and is connected to the cleaning pole shoe; the cleaning pole shoe can move downward and contact the track under the train when the rodless chamber is filled with air, and the elastic reset member is arranged in the cylinder barrel to reset the piston after the rodless chamber is exhausted.

2. The rail surface cleaner according to claim 1, characterized in that: The upper end of the cylinder is hinged or elastically connected to the lifting seat, and the lower end of the piston rod is hinged or elastically connected to the cleaning pole shoe.

3. The rail surface cleaner according to claim 1, characterized in that: The rail surface cleaner also includes at least one set of guide mechanisms, which include a guide rod and a guide cylinder. The upper end of the guide rod is fixedly connected to the lifting seat, and the lower end of the guide rod can be relatively movably inserted in the guide cylinder. The lower end of the guide cylinder is fixedly connected to the cleaning pole shoe.

4. The rail surface cleaner according to claim 1, characterized in that: The rail surface cleaner also includes a force transmission rod, the axial direction of which is arranged obliquely downward along the direction of train operation; the upper end of the force transmission rod is hinged to the lifting seat, the lower end of the force transmission rod is hinged to the cleaning pole shoe, the upper end of the cylinder is hinged or elastically connected to the lifting seat, and the lower end of the piston rod is hinged to the middle part of the force transmission rod.

5. The rail surface cleaner according to claim 1, characterized in that: The elastic return member is a compression spring, which is arranged in the rod cavity and has two ends which respectively abut against the bottom surfaces of the piston and the cylinder.

6. The rail surface cleaner according to claim 1, characterized in that: The rodless cavity can also be connected to an air supply pipeline in an on-off manner, and the air supply pipeline is used to be connected to the main air duct of the train.

7. The rail surface cleaner according to claim 6, characterized in that: A pressure reducing valve, an on-off solenoid valve and a bypass pipeline are sequentially arranged on the air supply pipeline along the gas conveying direction, and an exhaust switch valve is arranged on the bypass pipeline.

8. The rail surface cleaner according to claim 7, characterized in that: A one-way valve and a manual switch valve are sequentially arranged on the air supply pipeline and close to the main air duct of the train along the gas delivery direction.

9. The rail surface cleaner according to claim 7, characterized in that: The rail surface cleaner also includes a controller, which is electrically connected to the pressure reducing valve, the on-off solenoid valve and the exhaust switch valve.

10. The rail surface cleaner according to claim 1, characterized in that: The hoisting seat is used to be connected with the bogie crossbeam of the train.

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