CN216405273U - High-efficient circuit sand cleaning machine - Google Patents

Abstract

The utility model discloses a high-efficiency line sand cleaning machine, which is used for rails and comprises an underframe, a sand collecting device, a conveying device, a walking device and a power device, wherein the sand collecting device is used for collecting sand on sleepers of the rails and is arranged on the underframe; the conveying device is used for conveying the concentrated sand to the outer side of the rail, the conveying device is connected with the sand collecting device, and the sand collecting device is positioned on two sides of the conveying device; the power device is connected with the sand collecting device to provide power for the sand collecting device and the conveying device; the running gear is used for running along the track of the rail and is arranged on the bottom frame. The application provides a sand cleaning machine can be at the in-process of following the rail walking, carries out the operation of collection sand and row's sand simultaneously to promote sand cleaning efficiency.

Description

High-efficient circuit sand cleaning machine

Technical Field

The utility model relates to the technical field of mechanical equipment design, in particular to a high-efficiency line sand cleaning machine.

Background

The accumulated sand can be stored in the rail after long-term use, and the accumulated sand can influence the running of a train and simultaneously damage the rail, which can seriously cause the derailment of the train. The sand cleaning method used at present is to clean the sand of the rail by manpower or large-scale sand cleaning equipment, and the two methods have larger engineering quantity and lower sand cleaning efficiency.

In conclusion, how to solve the problem of low sand cleaning efficiency is a problem to be solved urgently by those skilled in the art at present.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides an efficient line sand cleaning machine, which can improve sand cleaning efficiency.

In order to achieve the above purpose, the utility model provides the following technical scheme:

a high efficiency line sander for use with a railroad rail, comprising:

a chassis;

a sand-collecting device for collecting sand on a sleeper of the rail, the sand-collecting device being mounted to the base frame;

the conveying device is used for conveying the sand after being concentrated to the outer side of the rail, the conveying device is connected with the sand collecting device, and the sand collecting device is positioned on two sides of the conveying device;

a power device connected with the sand-collecting device to provide power for the sand-collecting device and the conveying device;

and the running gear is used for running along the track of the rail and is arranged on the underframe.

Preferably, the sand collecting device comprises two augers which are respectively arranged at two sides of the conveying device, the spiral directions of blades of the augers are opposite, and the size of the blades of the augers is gradually reduced by approaching the conveying device to be far away from the conveying device.

Preferably, the equal detachable in the outside of auger is connected with can dismantle the auger, can dismantle the auger and be used for being close to the rail outside the sand pushes away to keeping away from the position of auger.

Preferably, the sand cleaning device further comprises a row brush for performing secondary cleaning on the residual sand on the sleeper, the row brush is arranged on the underframe and behind the conveying device, and the row brush is connected with the power device.

Preferably, a sand blocking plate for blocking sand is arranged on the rear side of the row brush.

Preferably, the back of the two sides of the row brush is provided with a sand pushing plate for cleaning sand accumulated on the two sides of the track, and the sand pushing plate is mounted on the bottom frame.

Preferably, the walking device is connected with the power device, the chassis is provided with a control switch for controlling the walking device to automatically walk, and the control switch is connected with the power device.

Preferably, track brushes are arranged behind the traveling devices and used for cleaning sand on contact surfaces of train wheels and the rails.

Preferably, conveyer includes conveyer belt, two band pulleys and safety cover, two the band pulley sets up from top to bottom, the conveyer belt is around locating the band pulley, the safety cover is located the outside of conveyer belt, the top the band pulley is connected with fastener, fastener locates the outside of safety cover, fastener can reciprocate and drive the band pulley reciprocates.

Preferably, the below of conveyer belt is connected with and is used for restricting the stopper of fastener removal degree, the safety cover is equipped with spacing hole, the stopper install in spacing downthehole, when fastener removes, the stopper with but spacing hole joint or break away from.

The utility model provides a high-efficiency line sand cleaning machine which comprises an underframe, a sand collecting device, a conveying device, a walking device and a power device, wherein the sand collecting device, the conveying device, the walking device and the power device are all arranged on the underframe, the sand collecting device is connected with the conveying device, and the sand collecting device is connected with the power device, so that after the power device is started, the sand collecting device is started and drives the conveying device to be started, the sand collecting device collects sand on two sides of a rail sleeper to the position of the conveying device, the conveying device conveys the collected sand to the outer side of a rail, and the walking device enables the whole equipment to walk along the rail.

Through the arrangement of the sand collecting device and the conveying device, when the equipment walks along the rail track, the sand collecting device can collect sand and convey the sand out of the rail, so that the sand in the rail can be quickly cleaned, and the sand cleaning efficiency is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a high-efficiency line sand cleaning machine provided by the utility model;

FIG. 2 is a schematic view of the connection between the sand collecting device and the power device of the high-efficiency line sand cleaning machine provided by the utility model;

FIG. 3 is a schematic structural diagram of a conveying device of the high-efficiency line sand cleaning machine provided by the utility model;

FIG. 4 is a schematic structural view of an auxiliary sand cleaning component of the high-efficiency line sand cleaning machine provided by the utility model;

FIG. 5 is a schematic structural diagram of a row brush of the high-efficiency line sand cleaning machine provided by the utility model;

fig. 6 is a schematic connection diagram of the walking device and the power device of the high-efficiency line sand cleaning machine provided by the utility model.

In FIGS. 1-6:

the device comprises a first worm gear reducer 1, a second worm gear reducer 2, a commutator 3, a track brush 4, a driving travelling wheel 5, a bottom frame 6, a row brush 7, a second reversing gear box 7, a first reversing gear box 8, a first worm gear reducer 9, a first flexible shaft 10, a driven travelling wheel 11, a detachable packing auger 12, a packing auger 13, a conveying device 14, a limiting block 15, a gasoline engine 16, a fastening device 17, a protective cover 18, a sand leaking pipe 19, a sand outlet 20, a second flexible shaft 21, a handle 22, a control switch 23, a scraping plate 24, a sand pushing plate 25, a sand blocking plate 26, a driven wheel 27, a driving wheel 28, a long shaft 29 and a chain wheel 30.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The core of the utility model is to provide the high-efficiency line sand cleaning machine which can improve the sand cleaning efficiency.

Referring to fig. 1-6, fig. 1 is a schematic structural diagram of a high-efficiency line sand cleaning machine; FIG. 2 is a schematic view of the connection of the sand collector and the power plant; FIG. 3 is a schematic structural view of a transfer device; FIG. 4 is a schematic structural view of an auxiliary sand cleaning component; FIG. 5 is a schematic view of a row brush configuration; fig. 6 is a schematic view of the connection between the walking device and the power device.

The application provides a high-efficiency line sand cleaning machine, which is used for rails and comprises an underframe 5, a sand collecting device, a conveying device 14, a walking device and a power device, wherein the sand collecting device is used for collecting sand on sleepers of the rails and is arranged on the underframe 5; the conveying device 14 is used for conveying the concentrated sand to the outer side of the rail, the conveying device 14 is connected with the sand collecting device, and the sand collecting device is positioned on two sides of the conveying device 14; the power device is connected with the sand collecting device to provide power for the sand collecting device and the conveying device 14; the running gear is used for running along the track of the rail, and the running gear is arranged on the underframe 5.

Specifically, the power device comprises a gasoline engine 16, a first worm gear reducer 9 and a second worm gear reducer 1, the first worm gear reducer 9 and the second worm gear reducer 1 are connected through a second flexible shaft 21, the two share one output end of a gasoline engine 16, an output shaft of a first worm gear reducer 9 is connected with a first reversing gear box 8, a front output shaft of the first reversing gear box 8 is a first flexible shaft 10, the first flexible shaft 10 is connected with the commutator 2, the commutator 2 is connected with the second reversing gear box 7, the output shaft of the second reversing gear box 7 is connected with the through shaft of the sand collecting device, the through shaft is connected with the transmission shaft of the transmission device 14, i.e. the sand trap is coaxially connected with the conveyor 14, since the second reversing gear box 7 is fixedly mounted on the underframe 5, the sand trap and conveyor 14 is thus mounted on the underframe 5 via the second reversing gearbox 7.

Sand collection device, conveyer 14, running gear and power device all install on chassis 5, sand collection device locates conveyer 14's both sides, conveyer 14 upwards has certain angle for the horizontal plane, and conveyer 14's upper end is located sand collection device's rear end, conveyer 14's upper end is connected with hourglass husky pipe 19, leak husky outside of pipe 19's end position in the rail, running gear is including locating four walking wheels on chassis 5, two walking wheels that are located chassis 5 rear are initiative walking wheel 4, the walking wheel that is located chassis 5 the place ahead is equipped with handle 22 for driven walking wheel 11 chassis 5.

When the gasoline engine 16 is started and reaches a certain rotating speed, the gasoline engine 16 transmits power to the sand collecting device through the first worm gear reducer 9, namely when the output shaft of the second reversing gear box 7 rotates, the through shaft and the transmission shaft are driven to rotate, so that the sand collecting device and the conveying device 14 are driven to operate, a worker can push the handle 22 to enable the whole device to walk along the rail track through the walking wheels, in the walking process, the sand collecting device collects sand on two sides of the rail sleeper below the conveying device 14, the conveying device 14 conveys the sand below the rail sleeper upwards to the sand leaking pipe 19, and finally the sand falls to the outer side of the rail from the sand leaking pipe 19 under the action of gravity.

Through the arrangement of the sand collecting device and the conveying device 14, the sand cleaning machine can simultaneously collect and discharge sand when walking along the rail track, so that the sand can be quickly cleaned on the rail, and the sand cleaning efficiency is improved.

The upper end of the conveying device 14 is connected with two sand leaking pipes 19, the tail ends of the two sand leaking pipes 19 are respectively positioned at the outer sides of two sides of the rail, the efficiency of dropping sand to the outer side of the rail can be improved, and optionally, only one sand leaking pipe 19 with a larger volume can be connected.

Alternatively, the gasoline engine 16 is a four-stroke small gasoline engine 16 or other type of gasoline engine 16.

Alternatively, the power unit may be connected to the transfer unit 14 and the sand collecting unit, respectively.

Alternatively, more road wheels may be provided on the chassis 5.

On the basis of the above embodiment, the sand collecting device comprises two augers 13 respectively arranged at two sides of a conveying device 14, the helical directions of blades of the two augers 13 are opposite, and the sizes of the blades of the augers 13 are gradually reduced from the position close to the conveying device 14 to the position far away from the conveying device 14.

Specifically, the sand collecting device comprises packing augers 13 arranged on two sides of a conveying device 14, the spiral directions of blades of the two packing augers 13 are opposite to each other, so that the packing augers 13 can collect sand to the position of the conveying device 14, and the sizes of the blades of the two packing augers 13 are gradually reduced from inside to outside due to the fact that sleepers of rails are concave downwards, so that the packing augers 13 are matched with the sleepers in shape, sand on the sleepers is improved, and the condition that sand in concave positions below the sleepers cannot be cleaned is avoided.

Because the rail can be paved with small stones, the sand collecting operation is carried out through the packing auger 13, the sand on the surface of the stones can be better cleaned, and the packing auger 13 has high strength and can adapt to the railway conditions with different sand amounts.

The two augers 13 have the same width, that is, the conveying device 14 is positioned in the middle of the sand collecting device, so that the sand collecting speed of the two augers 13 can be ensured to be the same, and optionally, the widths of the two augers 13 can also be different.

Optionally, the sand-collecting device may also be two second conveyor belts arranged transversely, and the second conveyor belts are provided with second scrapers.

On the basis of the above embodiment, the outer side of the packing auger 13 is detachably connected with the detachable packing auger 12, and the detachable packing auger 12 is used for pushing sand close to the outer side of the rail to a position far away from the packing auger 13.

Specifically, the outer sides of the two packing augers 13 are respectively provided with a detachable packing auger 12, the detachable packing auger 12 is connected with the output shaft of the second reversing gear box 7, and therefore the detachable packing auger 12 and the packing auger 13 rotate coaxially after installation.

When the sand outside the rail is gathered more, the detachable packing auger 12 can be installed to clean the sand outside the rail, and when the sand outside the rail is less, the detachable packing auger 12 can be detached.

Through the setting that can dismantle auger 12, can clear up and pile up 14 conveyer to the farther position of leaving the rail in the rail outside, the rail outside is piled up sand originally and is cleared up, avoids the sand to pile up in too much leading to the sand to fall back to the rail again, can dismantle auger 12 convenient to use simultaneously, the adaptable multiple rail condition.

Optionally, a plurality of detachable packing augers 12 can be arranged.

On the basis of the above embodiment, the sand cleaning machine further comprises a row brush 6 for performing secondary cleaning on the residual sand on the sleeper, the row brush 6 is arranged on the base frame 5 and is positioned behind the conveying device 14, and the row brush 6 is connected with the power device.

Specifically, a plurality of arrange brush 6 even distribute on the 6 conveyer belts of the row brush of whole horizontal setting, arrange brush 6 conveyer belts and install on four band pulleys, and four band pulleys are down trapezoidal setting, including a action wheel 28 and three follow driving wheel 27, second switching-over gear box 7 passes through the cardan shaft and is connected with action wheel 28, drives the operation of the 6 conveyer belts of row brush through action wheel 28, and the side top of the 6 conveyer belts of row brush is equipped with sand outlet 20, and sand outlet 20's exit end is located the outside of rail.

When the second reversing gear box 7 provides power to the driving wheel 28, the row brush 6 moves by conveying belt, the row brush 6 brings sand to the inclined edge of the inverted trapezoid and throws the sand into the sand outlet 20, the sand falls to the outer side of the rail through the sand outlet 20, and as the row brush 6 is arranged compactly and the conveying speed is high, part of the sand blocked by the sand outlet 20 can be brought out of the sand outlet 20 by the sand thrown to the sand outlet 20 subsequently.

Through setting up row brush 6, can carry out the secondary clearance with the sand that some auger 13 and conveyer 14 were not cleared up to improve sand cleaning efficiency, and action wheel 28 and follow driving wheel 27 and be the inside shape of laminating rail that the trapezoidal can be better of falling, reinforcing sand cleaning effect.

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

On the basis of the above embodiment, the rear side of the row brush 6 is provided with a sand guard 26 for blocking sand.

Specifically, the rear side of the row brush 6 is provided with a sand baffle 26, which can prevent accumulated sand from flying and falling back to the cleaned rail, and enhance the sand cleaning effect.

On the basis of the above embodiment, the back of the two sides of the row brush 6 is provided with a sand pushing plate 25 for cleaning sand accumulated on the two sides of the track, and the sand pushing plate 25 is installed on the bottom frame 5.

Specifically, push away husky board 25 for the cuboid of horizontal setting, if go out husky mouth 20 and handle the sand of clearing up out more to the sand is piled up in the both sides of rail, and the accessible pushes away husky board 25 this moment and pushes away the level or push away the scattering with accumulational sand, avoids the sand to pile up in the too much falling back rail.

Alternatively, the bottom of the sand pushing plate 25 may be sloped to push sand outward against the rails, or the sand pushing plate 25 may be shaped otherwise.

On the basis of any one of the above schemes, the walking device is connected with the power device, the chassis 5 is provided with a control switch 23 for controlling the walking device to automatically walk, and the control switch 23 is connected with the power device.

Specifically, the two driving travelling wheels 4 are connected through a long shaft 29, the second worm gear speed reducer 1 transmits power to the long shaft 29 through a chain wheel 30 structure, the two driving travelling wheels 4 are driven to rotate, a clutch is arranged between the second worm gear speed reducer 1 and the long shaft 29, a control switch 23 is arranged on a handle 22 arranged on the bottom frame 5, and the control switch 23 is connected with the clutch.

When a worker presses the control switch 23, the control switch 23 controls the clutch to start, so that the second worm gear speed reducer 1 can transmit power to the long shaft 29, the driving travelling wheel 4 realizes a self-travelling function, and the driven travelling wheel 11 is driven to travel forwards; when the gasoline engine 16 is started but the control switch 23 is not pressed, the clutch is not started and the second turbo-worm reducer 1 idles.

Through the setting of control switch 23, can realize the self-walking function of sand cleaning machine along the rail, save the physical power when staff's propelling movement.

Alternatively, the control switch 23 may be an on-off integrated control switch 23, or may be divided into a start switch and a stop switch.

On the basis of the above embodiment, a track brush 3 is arranged behind the traveling device, and the track brush 3 is used for cleaning sand on the contact surface of the train wheel and the rail.

Specifically, the track brushes 3 are respectively arranged behind the two active travelling wheels 4, when the sand cleaning machine travels along the rail, the four travelling wheels are all positioned at the contact position of the train wheels and the rail, therefore, in the traveling process, the track brushes 3 clean sand on the contact surface of the train wheels and the rail to the position below the contact surface, and only scattered sand exists on the contact surface, so that the sand is cleaned to the position below the contact surface of the rail and the train wheels, and the sand cleaning degree of the contact position of the train wheels and the rail is ensured.

The brush hair of track brush 3 is made by the nylon materials, and toughness is good and the brush hair is intensive, and optionally, the brush hair of track brush 3 also can be made by other non-metallic materials.

On the basis of any one of the above schemes, the conveying device 14 comprises a conveying belt, two belt wheels and a protective cover 18, the two belt wheels are arranged up and down, the conveying belt is wound on the belt wheels, the protective cover 18 is covered outside the conveying belt, the belt wheels above the protective cover are 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 wheels to move up and down.

Specifically, conveyer 14 includes conveyer belt, band pulley, safety cover 18 and scraper blade 24, and a plurality of scraper blades 24 even distribution all are equipped with the recess on every scraper blade 24 on whole conveyer belt, scrape sand to the recess in and convey, and the conveyer belt is at the in-process that rises, and the space between scraper blade 24 and the safety cover 18 inner wall is very little to prevent that sand from dropping in advance.

The belt wheel that is located the top is installed on the driven shaft, and the driven shaft transversely passes safety cover 18 and is connected with fastener 17, and fastener 17 installs on safety cover 18, and fastener 17 includes the minor axis, and when the minor axis moved up and down, the minor axis accessible driven shaft drove the belt wheel of top and moved up and down to the elasticity degree of adjustment conveyer belt, so that the sand cleaning machine can be used to in the different rails, and the minor axis after the adjustment can be fixed in on safety cover 18.

Optionally, the conveyor belt is a belt or other non-metallic materials, the scraper 24 is made of engineering plastics or other non-metallic materials with better toughness, and the scraper 24 may also be made of metal materials with better toughness.

Optionally, a connecting shaft may be disposed at the bottom of the upper belt wheel, and the connecting shaft is connected to the short shaft, so as to push the belt wheel to move through the connecting shaft.

On the basis of the embodiment, the lower part of the conveyor belt is connected with the limiting block 15 used for limiting the moving degree of the fastening device 17, the protective cover 18 is provided with a limiting hole, the limiting block 15 is installed in the limiting hole, and when the fastening device 17 moves, the limiting block 15 and the limiting hole can be clamped or separated.

Specifically, the below of conveyer belt is connected with the connecting rod, and the top of connecting rod is equipped with stopper 15, is equipped with spacing hole on the safety cover 18, and stopper 15 is located spacing downthehole.

When the short shaft is moved to enable the belt wheel to move upwards, the conveying belt is tightened, and when the conveying belt is tightened to a certain degree, the top of the limiting hole is fixedly clamped with the limiting block 15, so that the belt wheel cannot move upwards continuously; when removing the minor axis and making the band pulley remove downwards, the conveyer belt relaxs, and when the conveyer belt relaxed to certain degree, the bottom and the 15 joint of stopper in spacing hole were fixed to make the band pulley can't continue to remove downwards.

Because the transmission shaft is connected with the through shaft, consequently through setting up stopper 15 and spacing hole, can prevent that the conveyer belt from tightly making the through shaft atress crooked when excessive and causing the damage, avoid the conveyer belt too to relax simultaneously and cause scraper blade 24 to scrape the effect of husky not good.

Alternatively, the stopper 15 and the stopper hole may be provided above the conveyor belt and the protective cover 18.

The utility model provides a pair of high-efficient circuit sand cleaning machine, use auger 13 and conveyer belt combination formula to receive husky part, auger 13 is located the both sides of conveyer belt, two auger 13's blade spiral opposite direction, thereby can concentrate the conveyer belt department in the middle of the sand, convey sand to the top by the conveyer belt, and make sand from leaking sand pipe 19 landing outside the rail, auger 13's blade intensity is high, can deal with the railway condition of various sand volumes, and the operation of collection sand and row sand can go on simultaneously, thereby improve sand cleaning efficiency. In addition, the detachable packing augers 12 can be installed on the outer sides of the two packing augers 13, so that the detachable packing augers are convenient to install and detach, and the sand cleaning machine can adapt to various conditions. The whole sand cleaning machine is provided with a walking device, and the walking device can realize a self-walking function through the control switch 23, so that the physical strength of workers is saved. In addition, two auxiliary sand cleaning components are arranged, one is a track brush 3 arranged behind the active walking wheel 4, which can clean scattered sand on the contact surface of the train wheel and the rail and ensure the sand cleaning degree of the contact part of the train wheel and the rail; one is a row brush 6 positioned below the sand leaking pipe 19, which can clean and throw out sand which is not cleaned by the packing auger 13 and the conveyor belt from one side of the rail, thereby ensuring the sand cleaning effect.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The efficient line sand cleaning machine provided by the utility model is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims (10)

1. A high efficiency line sand cleaning machine for railroad rails, comprising:

a chassis (5);

-a sand-collecting device for collecting sand on the sleepers of the rails, said sand-collecting device being mounted to the chassis (5);

a conveyor (14) for conveying the sand after concentration to the outside of the rail, the conveyor (14) being connected to the sand collector and the sand collector being located on both sides of the conveyor (14);

-power means connected to the sand trap to power the sand trap and the conveyor (14);

and the running gear is used for running along the track of the rail and is arranged on the underframe (5).

2. The efficient line sand cleaning machine according to claim 1, wherein the sand collecting device comprises two packing augers (13) respectively arranged at two sides of the conveying device (14), the spiral directions of blades of the two packing augers (13) are opposite, and the sizes of the blades of the packing augers (13) are gradually decreased from the position close to the conveying device (14) to the position far away from the conveying device (14).

3. The efficient line sand cleaning machine according to claim 2, wherein detachable packing augers (12) are detachably connected to the outer sides of the packing augers (13), and the detachable packing augers (12) are used for pushing sand close to the outer side of the rail to a position far away from the packing augers (13).

4. A high efficiency line sand cleaning machine according to claim 1, further comprising a row brush (6) for secondary cleaning of the sand remaining on the sleepers, said row brush (6) being arranged on the chassis (5) and behind the conveyor (14), said row brush (6) being connected to the power means.

5. A high efficiency line cleaning machine according to claim 4, characterized in that the rear side of the row brush (6) is provided with a sand deflector (26) for blocking sand.

6. A high-efficiency line sand cleaning machine according to claim 5, characterized in that a sand pushing plate (25) for cleaning the sand accumulated on the two sides of the track is arranged behind the two sides of the row brush (6), and the sand pushing plate (25) is installed on the bottom frame (5).

7. A high efficiency line sand cleaning machine according to any of the claims 1-6, characterized in that the walking device is connected with the power device, and the chassis (5) is provided with a control switch (23) for controlling the walking device to walk automatically, the control switch (23) is connected with the power device.

8. A high efficiency line sand cleaning machine according to claim 7, characterized in that a track brush (3) is arranged behind the running gear, and the track brush (3) is used for cleaning the sand on the contact surface of the train wheel and the rail.

9. A high efficiency line sand cleaning machine according to any one of the claims 1-6, characterized in that the conveyor (14) comprises a conveyor belt, two pulleys and a protective cover (18), wherein the two pulleys are arranged up and down, the conveyor belt is wound around the pulleys, the protective cover (18) is covered outside the conveyor belt, the pulleys above are 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 pulleys to move up and down.

10. The efficient line sand cleaning machine according to claim 9, wherein 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, and when the fastening device (17) moves, the limiting block (15) and the limiting hole can be clamped or separated.

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