An efficient line sand cleaning machine

Abstract

The present invention discloses an efficient track sand cleaning machine for railway tracks, which includes a chassis, a sand collecting device, a conveying device, a traveling device and a power device. The sand collecting device is used to collect the sand on the sleepers of the railway tracks, and the sand collecting device is installed on the chassis. The conveying device is used to convey the collected sand to the outside of the railway tracks. The conveying device is connected to the sand collecting device, and the sand collecting device is located on both sides of the conveying device. The power device is connected to the sand collecting device and the conveying device to provide power. The traveling device is used to travel along the track of the railway tracks, and the traveling device is installed on the chassis. The sand cleaning machine provided by this application can perform the operations of sand collection and sand discharge simultaneously during the process of traveling along the railway tracks, thereby improving the sand cleaning efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical equipment design, and more specifically, to an efficient line sand cleaning machine. Background Art

[0002] After long-term use, the railway tracks will have accumulated sand, which will affect the operation of trains and cause damage to the tracks at the same time. In severe cases, it may even lead to train derailment. Currently, the sand cleaning methods used are to clean the tracks manually or with large-scale sand cleaning equipment. Both of these methods have a large amount of work and low sand cleaning efficiency.

[0003] In summary, how to solve the problem of low sand cleaning efficiency is an urgent problem for those skilled in the art at present. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide an efficient line sand cleaning machine, which can improve the sand cleaning efficiency.

[0005] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0006] An efficient line sand cleaning machine for railway tracks, comprising:

[0007] A chassis;

[0008] A sand collecting device for collecting the sand on the sleepers of the railway tracks, and the sand collecting device is installed on the chassis;

[0009] A conveying device for conveying the concentrated sand to the outside of the railway tracks. The conveying device is connected to the sand collecting device, and the sand collecting device is located on both sides of the conveying device;

[0010] A power device connected to the sand collecting device to provide power to the sand collecting device and the conveying device;

[0011] A traveling device for traveling along the track of the railway tracks, and the traveling device is installed on the chassis.

[0012] Preferably, the sand collecting device includes two augers respectively arranged on both sides of the conveying device. The spiral directions of the blades of the two augers are opposite, and the sizes of the blades of the augers decrease from the position close to the conveying device to the position far from the conveying device.

[0013] Preferably, a detachable auger is detachably connected to the outside of the auger, and the detachable auger is used to push the sand near the outside of the railway track to a position away from the auger.

[0014] Preferably, it further includes a row brush for secondarily cleaning the remaining sand on the sleeper. The row brush is arranged on the chassis and behind the conveying device, and the row brush is connected to the power device.

[0015] Preferably, a sand baffle for blocking sand is arranged behind the row brush.

[0016] Preferably, sand pushing plates for cleaning the sand accumulated on both sides of the track are arranged behind both sides of the row brush. The sand pushing plates are installed on the chassis.

[0017] Preferably, the traveling device is connected to the power device, and a control switch for controlling the automatic traveling of the traveling device is arranged on the chassis. The control switch is connected to the power device.

[0018] Preferably, track brushes are arranged behind the traveling devices. The track brushes are used for cleaning the sand on the contact surface between the train wheels and the railway tracks.

[0019] Preferably, the conveying device includes a conveyor belt, belt pulleys and a protective cover. The two belt pulleys are arranged vertically. The conveyor belt is installed on the belt pulleys. The protective cover covers the outside of the conveyor belt. The upper belt pulley is connected with a fastening device. The fastening device is arranged outside the protective cover. The fastening device can move up and down and drive the belt pulley to move up and down.

[0020] Preferably, a limiting block for restricting the moving degree of the fastening device is connected below the conveyor belt. The protective cover is provided with a limiting hole. The limiting block is installed in the limiting hole. When the fastening device moves, the limiting block and the limiting hole can be engaged or disengaged.

[0021] An efficient track sand cleaning machine provided by the present invention includes a chassis, a sand collecting device, a conveying device, a traveling device and a power device. The sand collecting device, the conveying device, the traveling device and the power device are all arranged on the chassis. Since the sand collecting device is connected to the conveying device and the sand collecting device is connected to the power device, after the power device is started, the sand collecting device is started and drives the conveying device to start. The sand collecting device concentrates the sand on both sides of the railway sleeper to the position of the conveying device. The conveying device conveys the concentrated sand to the outside of the railway track. The traveling device makes the whole device travel along the railway track.

[0022] Through the arrangement of the sand collecting device and the conveying device, the operations of collecting sand and transporting the sand out of the railway track can be carried out simultaneously when the device travels along the railway track, so that the sand in the railway track can be quickly cleaned and the sand cleaning efficiency can be improved. Description of the Drawings

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the provided drawings.

[0024] Figure 1 Structural schematic diagram of the high-efficiency line sand cleaning machine provided by the present invention;

[0025] Figure 2 Connection schematic diagram of the sand collection device and the power device of the high-efficiency line sand cleaning machine provided by the present invention;

[0026] Figure 3 Structural schematic diagram of the transmission device of the high-efficiency line sand cleaning machine provided by the present invention;

[0027] Figure 4 Structural schematic diagram of the auxiliary sand cleaning component of the high-efficiency line sand cleaning machine provided by the present invention;

[0028] Figure 5 Structural schematic diagram of the row brush of the high-efficiency line sand cleaning machine provided by the present invention;

[0029] Figure 6 Connection schematic diagram of the traveling device and the power device of the high-efficiency line sand cleaning machine provided by the present invention.

[0030] Figure 1-6 In which:

[0031] 1 is the second worm and gear reducer, 2 is the commutator, 3 is the track brush, 4 is the active traveling wheel, 5 is the chassis, 6 is the row brush, 7 is the second reversing gearbox, 8 is the first reversing gearbox, 9 is the first worm and gear reducer, 10 is the first flexible shaft, 11 is the driven traveling wheel, 12 is the detachable auger, 13 is the auger, 14 is the transmission device, 15 is the limit block, 16 is the gasoline engine, 17 is the fastening device, 18 is the protective cover, 19 is the sand leakage pipe, 20 is the sand outlet, 21 is the second flexible shaft, 22 is the handle, 23 is the control switch, 24 is the scraping plate, 25 is the sand pushing plate, 26 is the sand blocking plate, 27 is the driven wheel, 28 is the driving wheel, 29 is the long shaft, 30 is the sprocket. Specific embodiments

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0033] The core of the present invention is to provide an efficient line sand cleaning machine, which can improve the sand cleaning efficiency.

[0034] Please refer to Figure 1-Figure 6 , Figure 1 which is a schematic structural diagram of the efficient line sand cleaning machine; Figure 2 which is a schematic connection diagram of the sand collecting device and the power device; Figure 3 which is a schematic structural diagram of the conveying device; Figure 4 which is a schematic structural diagram of the auxiliary sand cleaning component; Figure 5 which is a schematic structural diagram of the row brush; Figure 6 which is a schematic connection diagram of the traveling device and the power device.

[0035] An efficient line sand cleaning machine provided by the present application is used for railway tracks and includes a chassis 5, a sand collecting device, a conveying device 14, a traveling device, and a power device. The sand collecting device is used to collect the sand on the sleepers of the railway tracks, and the sand collecting device is installed on the chassis 5; the conveying device 14 is used to convey the concentrated sand to the outside of the railway tracks, the conveying device 14 is connected to the sand collecting device, and the sand collecting device is located on both sides of the conveying device 14; the power device is connected to the sand collecting device and the conveying device 14 to provide power; the traveling device is used to travel along the track of the railway tracks, and the traveling device is installed on the chassis 5.

[0036] Specifically, the power device includes a gasoline engine 16, a first worm and worm gear reducer 9, and a second worm and worm gear reducer 1. The first worm and worm gear reducer 9 and the second worm and worm gear reducer 1 are connected by a second flexible shaft 21, and both share an output end of the gasoline engine 16. The output shaft of the first worm and worm gear reducer 9 is connected to a first reversing gearbox 8. The front output shaft of the first reversing gearbox 8 is a first flexible shaft 10, and the first flexible shaft 10 is connected to a commutator 2. The commutator 2 is connected to a second reversing gearbox 7. The output shaft of the second reversing gearbox 7 is connected to the through shaft of the sand collecting device, and the through shaft is connected to the transmission shaft of the conveying device 14, that is, the sand collecting device and the conveying device 14 are coaxially connected. Since the second reversing gearbox 7 is fixedly installed on the chassis 5, the sand collecting device and the conveying device 14 are installed on the chassis 5 through the second reversing gearbox 7.

[0037] The sand collecting device, the conveying device 14, the traveling device, and the power device are all installed on the chassis 5. The sand collecting device is arranged on both sides of the conveying device 14. The conveying device 14 has a certain angle upward relative to the horizontal plane, and the upper end of the conveying device 14 is located at the rear end of the sand collecting device. The upper end of the conveying device 14 is connected to a sand leakage pipe 19, and the end of the sand leakage pipe 19 is located outside the railway tracks. The traveling device includes four traveling wheels arranged on the chassis 5. The two traveling wheels located at the rear of the chassis 5 are active traveling wheels 4, and the traveling wheels located in front of the chassis 5 are driven traveling wheels 11. A handle 22 is provided on the chassis 5.

[0038] When the gasoline engine 16 is started and reaches a certain speed, the gasoline engine 16 transmits power to the sand collecting device through the first turbine worm reducer 9. That is, when the output shaft of the second reversing gearbox 7 rotates, it drives the through shaft and the transmission shaft to rotate, thereby driving the sand collecting device and the conveying device 14 to operate. The staff can push the handle 22 to move the entire device along the railway track through the walking wheels. During the walking process, the sand collecting device concentrates the sand on both sides of the railway ties onto the lower part of the conveying device 14. The conveying device 14 conveys the sand below upward to the sand leakage pipe 19. Finally, the sand falls from the sand leakage pipe 19 to the outside of the railway track due to the action of gravity.

[0039] Through the setting of the sand collecting device and the conveying device 14, the sand cleaning machine can collect and discharge sand simultaneously when walking along the railway track, so as to quickly clean the railway track and improve the sand cleaning efficiency.

[0040] Two sand leakage pipes 19 are connected to the upper end of the conveying device 14. The ends of the two sand leakage pipes 19 are respectively located outside both sides of the railway track, which can improve the efficiency of the sand falling to the outside of the railway track. Optionally, only one larger sand leakage pipe 19 can also be connected.

[0041] Optionally, the gasoline engine 16 is a four-stroke small gasoline engine 16 or other types of gasoline engines 16.

[0042] Optionally, the power device can also be connected to the conveying device 14 and the sand collecting device respectively.

[0043] Optionally, more walking wheels can also be provided on the chassis 5.

[0044] On the basis of the above embodiments, the sand collecting device includes two augers 13 respectively arranged on both sides of the conveying device 14. The spiral directions of the blades of the two augers 13 are opposite, and the sizes of the blades of the augers 13 decrease from near the conveying device 14 to far from the conveying device 14.

[0045] Specifically, the sand collecting device includes augers 13 arranged on both sides of the conveying device 14. The spiral directions of the blades of the two augers 13 are opposite to ensure that the augers 13 can gather the sand towards the position of the conveying device 14. Since the railway ties are in a downward concave shape, the sizes of the blades of the two augers 13 decrease from the inside to the outside, so that the augers 13 match the shape of the ties better, thereby increasing the amount of sand cleaned on the ties and avoiding the sand in the concave part under the ties from not being cleaned.

[0046] Since small stones are laid on the railway track, the sand on the surface of the stones can be cleaned well through the sand collection operation of the augers 13, and the augers 13 have high strength and can adapt to different railway conditions with different amounts of sand.

[0047] The widths of the two augers 13 are the same, that is, the conveying device 14 is located exactly in the middle of the sand collecting device, which can ensure that the sand collecting rates of the two augers 13 are the same. Optionally, the widths of the two augers 13 can also be different.

[0048] Optionally, the sand collecting device can also be two second conveyor belts arranged horizontally, and second scrapers are arranged on the second conveyor belts.

[0049] Based on the above embodiments, a detachable auger 12 is detachably connected to the outside of the auger 13. The detachable auger 12 is used to push the sand near the outside of the railway track to a position away from the auger 13.

[0050] Specifically, a detachable auger 12 is respectively arranged on the outside of the two augers 13. The detachable auger 12 is connected to the output shaft of the second reversing gearbox 7. Therefore, after installation, the detachable auger 12 rotates coaxially with the auger 13.

[0051] When there is a large amount of sand accumulated outside the railway track, the detachable auger 12 can be installed to clean the sand outside the railway track. When there is less sand outside the railway track, the detachable auger 12 can be disassembled.

[0052] Through the setting of the detachable auger 12, the sand that is cleaned by the conveying device 14 and accumulated outside the railway track and the sand originally accumulated outside the railway track can be cleaned to a position farther away from the railway track, avoiding the sand from accumulating too much and falling back into the railway track again. At the same time, the detachable auger 12 is convenient to use and can adapt to various railway track conditions.

[0053] Optionally, multiple detachable augers 12 can also be set.

[0054] Based on the above embodiments, it further includes a row brush 6 for secondarily cleaning the remaining sand on the sleeper. The row brush 6 is arranged on the chassis 5 and behind the conveying device 14, and the row brush 6 is connected to the power device.

[0055] Specifically, multiple row brushes 6 are evenly distributed on the entire horizontally arranged row brush 6 conveyor belt. The row brush 6 conveyor belt is installed on four pulleys. The four pulleys are arranged in an inverted trapezoid, including a driving pulley 28 and three driven pulleys 27. The second reversing gearbox 7 is connected to the driving pulley 28 through a universal shaft. The row brush 6 conveyor belt is driven to operate by the driving pulley 28. A sand outlet 20 is arranged above the side of the row brush 6 conveyor belt, and the outlet end of the sand outlet 20 is located outside the railway track.

[0056] When the second reversing gearbox 7 provides power to the driving wheel 28, the brush 6 drives the conveyor belt to run. The brush 6 carries the sand to the hypotenuse of the inverted trapezoid and throws it into the sand outlet 20. The sand falls outside the railway track through the sand outlet 20. Since the brushes 6 are arranged compactly and the conveying speed is fast, some of the sand blocked by the sand outlet 20 can be carried out of the sand outlet 20 by the subsequent sand thrown into the sand outlet 20.

[0057] By providing the brush 6, some of the sand that has not been cleaned by the auger 13 and the conveyor device 14 can be cleaned again, thereby improving the sand cleaning efficiency. Moreover, the driving wheel 28 and the driven wheel 27 are in an inverted trapezoid shape, which can better fit the inner shape of the railway track and enhance the sand cleaning effect.

[0058] Optionally, the brush 6 is made of nylon or other non-metallic materials and has good toughness.

[0059] On the basis of the above embodiment, a sand baffle 26 for blocking sand is provided at the rear side of the brush 6.

[0060] Specifically, a sand baffle 26 is provided at the rear side of the brush 6, which can prevent the accumulated sand from flying and falling back to the cleaned railway track, enhancing the sand cleaning effect.

[0061] On the basis of the above embodiment, sand pushing plates 25 for cleaning the sand accumulated on both sides of the track are provided at the rear sides of both sides of the brush 6. The sand pushing plates 25 are installed on the chassis 5.

[0062] Specifically, the sand pushing plate 25 is a horizontally arranged cuboid. If there is more sand cleaned at the sand outlet 20 and the sand accumulates on both sides of the railway track, at this time, the accumulated sand can be leveled or scattered by the sand pushing plate 25 to prevent too much sand from falling back into the railway track.

[0063] Optionally, the bottom of the sand pushing plate 25 can be set to have a slope to push the sand out of the railway track, or the sand pushing plate 25 can be set to other shapes.

[0064] On the basis of any of the above solutions, the traveling device is connected to the power device, and a control switch 23 for controlling the automatic traveling of the traveling device is provided on the chassis 5. The control switch 23 is connected to the power device.

[0065] Specifically, the two driving wheels 4 are connected by a long shaft 29. The second worm and worm gear reducer 1 transmits power to the long shaft 29 through a sprocket 30 structure, thereby driving the two driving wheels 4 to rotate. A clutch is provided between the second worm and worm gear reducer 1 and the long shaft 29. A control switch 23 is provided on the handle 22 provided on the chassis 5. The control switch 23 is connected to the clutch.

[0066] When the staff presses the control switch 23, the control switch 23 controls the clutch to start, so that the second turbo worm reducer 1 can transmit power to the long shaft 29, enabling the driving walking wheel 4 to achieve the function of self-walking and driving the driven walking wheel 11 forward; when the gasoline engine 16 starts but the control switch 23 is not pressed, the clutch does not start and the second turbo worm reducer 1 idles.

[0067] Through the setting of the control switch 23, the self-walking function of the sand cleaning machine along the railway track can be realized, saving the physical strength of the staff when pushing.

[0068] Optionally, the control switch 23 can be an on-off integrated control switch 23, or can be divided into a start switch and a stop switch.

[0069] On the basis of the above embodiments, track brushes 3 are provided at the rear of the walking device, and the track brushes 3 are used to clean the sand on the contact surface between the train wheels and the railway track.

[0070] Specifically, track brushes 3 are respectively provided behind the two driving walking wheels 4. When the sand cleaning machine walks along the railway track, all four walking wheels are located at the position where the train wheels contact the railway track. Therefore, during the walking process, the track brushes 3 clean the sand on the contact surface between the train wheels and the railway track to a position below the contact surface. Since there is only scattered sand on the contact surface, it is only necessary to clean the sand to a position below the contact surface between the railway track and the train wheels, thereby ensuring the sand cleaning degree at the contact between the train wheels and the railway track.

[0071] The bristles of the track brush 3 are made of nylon material, with good toughness and dense bristles. Optionally, the bristles of the track brush 3 can also be made of other non-metallic materials.

[0072] On the basis of any of the above solutions, the conveying device 14 includes a conveyor belt, belt pulleys and a protective cover 18. The two belt pulleys are arranged vertically. The conveyor belt is installed on the belt pulleys, and the protective cover 18 covers the outside of the conveyor belt. The upper belt pulley is connected with a fastening device 17. The fastening device 17 is arranged outside the protective cover 18, and the fastening device 17 can move up and down and drive the belt pulley to move up and down.

[0073] Specifically, the conveying device 14 includes a conveyor belt, belt pulleys, a protective cover 18 and a scraper 24. A plurality of scrapers 24 are evenly distributed on the entire conveyor belt. Each scraper 24 is provided with a groove to scrape the sand into the groove for conveying. When the conveyor belt rises, the gap between the scraper 24 and the inner wall of the protective cover 18 is very small to prevent the sand from falling in advance.

[0074] The upper pulley is mounted on the driven shaft. The driven shaft passes horizontally through the protective cover 18 and is connected to the fastening device 17. The fastening device 17 is mounted on the protective cover 18. The fastening device 17 includes a short shaft. When the short shaft is moved up and down, the short shaft can drive the upper pulley to move up and down through the driven shaft, thereby adjusting the tightness of the conveyor belt so that the sand cleaning machine can be used in different railway tracks. The adjusted short shaft can be fixed on the protective cover 18.

[0075] Optionally, the conveyor belt is a belt or other non-metallic material, and the scraper 24 is made of engineering plastic or other non-metallic materials with better toughness. The scraper 24 can also be made of metallic materials with better toughness.

[0076] Optionally, a connecting shaft can also be provided at the bottom of the upper pulley. The connecting shaft is connected to the short shaft, and then the pulley is pushed to move through the connecting shaft.

[0077] On the basis of the above embodiment, a limit block 15 for restricting the moving degree of the fastening device 17 is connected below the conveyor belt. The protective cover 18 is provided with a limit hole. The limit block 15 is mounted in the limit hole. When the fastening device 17 moves, the limit block 15 and the limit hole can be engaged or disengaged.

[0078] Specifically, a connecting rod is connected below the conveyor belt. The top of the connecting rod is provided with a limit block 15. The protective cover 18 is provided with a limit hole. The limit block 15 is located in the limit hole.

[0079] When the short shaft is moved to make the pulley move upward, the conveyor belt is tightened. When the conveyor belt is tightened to a certain extent, the top of the limit hole is engaged and fixed with the limit block 15 so that the pulley cannot continue to move upward. When the short shaft is moved to make the pulley move downward, the conveyor belt is loosened. When the conveyor belt is loosened to a certain extent, the bottom of the limit hole is engaged and fixed with the limit block 15 so that the pulley cannot continue to move downward.

[0080] Since the drive shaft is connected to the through shaft, by providing the limit block 15 and the limit hole, it is possible to prevent the through shaft from being bent due to excessive tension of the conveyor belt, and at the same time avoid the poor sand scraping effect of the scraper 24 caused by the overly loose conveyor belt.

[0081] Optionally, the limit block 15 and the limit hole can also be provided above the conveyor belt and the protective cover 18.

[0082] An efficient track sand cleaner provided by the present application uses a combined sand collection component of a screw conveyor 13 and a conveyor belt. The screw conveyor 13 is located on both sides of the conveyor belt, and the spiral directions of the blades of the two screw conveyors 13 are opposite, so that the sand can be concentrated at the conveyor belt in the middle. The conveyor belt conveys the sand upward and makes the sand slide out of the sand leakage pipe 19 to the outside of the railway track. The blades of the screw conveyor 13 have high strength and can cope with various railway conditions with different sand amounts. Moreover, the operations of sand collection and sand discharge can be carried out simultaneously, thereby improving the sand cleaning efficiency. In addition, a detachable screw conveyor 12 can be installed on the outside of the two screw conveyors 13, which is convenient for installation and disassembly and enables the sand cleaner to adapt to various situations. The sand cleaner is provided with a traveling device as a whole, and the traveling device can realize the self-traveling function through the control switch 23, saving the physical strength of the staff. In addition, there are two auxiliary sand cleaning components. One is the track brush 3 arranged behind the driving wheel 4, which can clean the scattered sand on the contact surface between the train wheel and the railway track and ensure the sand cleaning degree at the contact part between the train wheel and the railway track. The other is the discharge brush 6 located below the sand leakage pipe 19, which can sweep and throw out the sand that has not been cleaned by the screw conveyor 13 and the conveyor belt from one side of the railway track to ensure the sand cleaning effect.

[0083] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same and similar parts among the various embodiments, reference can be made to each other.

[0084] The efficient track sand cleaner provided by the present invention has been introduced in detail above. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and modifications can still be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. An efficient track sand cleaning machine for railway tracks, characterized in that, Comprising: A chassis (5); A sand collecting device for collecting the sand on the sleepers of the railway track, the sand collecting device being installed on the chassis (5); A conveying device (14) for conveying the concentrated sand to the outside of the railway track, the conveying device (14) being connected to the sand collecting device, and the sand collecting device being located on both sides of the conveying device (14); A power device connected to the sand collecting device and the conveying device (14) to provide power; A traveling device for traveling along the track of the railway track, the traveling device being installed on the chassis (5); It further includes a row brush (6) and a conveyor belt for secondarily cleaning the remaining sand on the sleepers. Four pulleys are installed on the chassis. The four pulleys are arranged in an inverted trapezoid. The conveyor belt is installed on the four pulleys. The row brush (6) is provided on the chassis (5) and behind the conveying device (14). The row brush (6) is connected to the power device. The row brush (6) is evenly distributed on the entire horizontally arranged row brush (6) conveyor belt; A sand retaining plate (26) for retaining sand is provided behind the row brush (6); Sand pushing plates (25) for cleaning the sand accumulated on both sides of the track are provided behind both sides of the row brush (6). The sand pushing plates (25) are installed on the chassis (5).

2. The high-efficiency line sand cleaning machine according to claim 1, wherein The sand collecting device includes two augers (13) respectively provided on both sides of the conveying device (14). The spiral directions of the blades of the two augers (13) are opposite, and the sizes of the blades of the auger (13) decrease from near the conveying device (14) to far from the conveying device (14).

3. The high-efficiency line sand cleaning machine according to claim 2, wherein, Detachable augers (12) are detachably connected to the outside of the auger (13). The detachable augers (12) are used to push the sand near the outside of the railway track to a position away from the auger (13).

4. The high-efficiency line sand cleaner according to any one of claims 1-3, characterized in that, The traveling device is connected to the power device, and the chassis (5) is provided with a control switch (23) for controlling the automatic traveling of the traveling device. The control switch (23) is connected to the power device.

5. The high-efficiency line sand cleaning machine according to claim 4, characterized in that, Track brushes (3) are provided behind the traveling device. The track brushes (3) are used to clean the sand on the contact surface between the train wheels and the railway track.

6. The high-efficiency line sand cleaning machine according to any one of claims 1-3, characterized in that, The conveying device (14) includes a conveyor belt, two pulleys and a protective cover (18). The two pulleys are arranged up and down. The conveyor belt is wound around the two pulleys. The protective cover (18) covers the outside of the conveyor belt. The upper pulley is connected with a fastening device (17). The fastening device (17) is provided outside the protective cover (18). The fastening device (17) can move up and down and drive the pulley to move up and down.

7. The high-efficiency line sand cleaning machine according to claim 6, characterized in that, A limiting block (15) for limiting the moving degree of the fastening device (17) is connected below the conveyor belt. The protective cover (18) is provided with a limiting hole. The limiting block (15) is installed in the limiting hole. When the fastening device (17) moves, the limiting block (15) and the limiting hole can be engaged or disengaged.

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