A locomotive track sanding device

Abstract

The application discloses a locomotive track sanding device, comprising a sanding box, which is internally divided into two chambers by a partition; two steering assemblies are arranged in the two chambers respectively, and each steering assembly comprises a rotating frame arranged at the bottom of the chamber, the rotating frame penetrates through the bottom end of the sanding box and is rotationally connected with the sanding box, a discharge pipe is fixedly connected to the bottom end of the rotating frame, a driving member and a horizontal monitoring member are fixedly connected to the outer wall of the sanding box, the driving member is transmissionally connected with the rotating frame through an air guide pipe, and the horizontal monitoring member is electrically connected with the driving member. The application can realize steering of the sand outlet end, and can also heat the sand outlet end and dry the sand in the sanding device, so as to meet the sanding requirement.

Description

Technical Field

[0001] This invention relates to the field of rail transit equipment, and in particular to a locomotive track sand spreading device. Background Technology

[0002] To ensure the normal operation of rail vehicles, sand spreading is required during their movement as needed. Sand spreading increases the friction between the rail vehicle and the wheel and rail, and the sand spreading operation is usually carried out by a sand spreading device.

[0003] Because the locomotive tracks are not horizontal, the sand-spreading device's discharge end needs to have a steering function to align with the vehicle's wheels. Additionally, in winter, due to external environmental factors, moisture can enter and condense at the sand-spreading device's discharge end, causing the sand to solidify. Alternatively, excessive moisture in the sand can also lead to condensation. Both of these issues affect normal sand-spreading operations.

[0004] Therefore, a locomotive track sand spreading device is provided, which can not only turn the sand outlet end, but also heat the sand outlet end and dry the sand in the spreading device, thereby meeting the sand spreading needs. Summary of the Invention

[0005] The purpose of this invention is to provide a locomotive track sand spreading device to solve the problems existing in the prior art. It can realize the turning of the sand outlet end, and can also heat the sand outlet end and dry the sand in the sand spreading device, thereby meeting the sand spreading needs.

[0006] To achieve the above objectives, the present invention provides the following solution: The present invention provides a locomotive track sand spreading device, comprising,

[0007] The sand-spreading box is internally divided into two chambers by a partition.

[0008] Two steering assemblies are respectively disposed in the two chambers. Each steering assembly includes a rotating frame disposed at the bottom of the chamber. The rotating frame passes through the bottom end of the sand spreading box and is rotatably connected to the sand spreading box. A discharge pipe is fixedly connected to the bottom end of the rotating frame. A driving component and a level monitoring component are fixedly connected to the outer wall of the sand spreading box. The driving component is connected to the rotating frame through an air guide pipe. The level monitoring component is electrically connected to the driving component.

[0009] A heating sleeve is fitted on the outer wall of the discharge pipe and fixed to the bottom end of the rotating frame. A heating element is provided at the top of the sand-spreading box. The air outlet of the heating element extends into the heating sleeve. The air outlet of the heating sleeve is connected to the inside of the rotating frame. The air outlet of the rotating frame is connected to the air inlet of the heating element through the air guide pipe.

[0010] A drying element is fixed on the rotating frame, and the air outlet of the drying element is connected to the air inlet of the air guide pipe.

[0011] Preferably, the rotating frame includes a rotating plate passing through the bottom end of the sand spreading box, the rotating plate being rotatably connected to the bottom end of the sand spreading box, the inlet end of the discharge pipe extending through the rotating plate into the sand spreading box, the outlet end of the discharge pipe being correspondingly arranged with the vehicle rail, a plurality of connecting cylinders being fixedly connected to the top end of the rotating plate, the air inlet ends of the plurality of connecting cylinders extending into the heating sleeve, the other ends of the plurality of connecting cylinders being fixedly connected to and connected to an air guide ring, the bottom of the air guide pipe being located inside the air guide ring, the outer wall of the air guide pipe being fixedly connected to the inner wall of the air guide ring through a plurality of air collecting pipes, and the air guide ring being connected to the air guide pipe through the air collecting pipes.

[0012] Preferably, the top of the sand spreading box has an opening, and the air outlet of the air guide pipe extends out of the sand spreading box through the opening. The driving component includes a drive motor disposed at the top of the sand spreading box. The drive motor is fixedly connected to the top of the sand spreading box through a mounting plate, and the output end of the drive motor is fixedly connected to the top of the air guide pipe.

[0013] Preferably, the level monitoring component includes a level tester fixed to the outer wall of the sand spreading box, and the level tester is connected to the drive motor through a control component.

[0014] Preferably, the top end of the heating sleeve is fixedly connected to the bottom end of the rotating plate, the bottom end of the heating sleeve is closed, the discharge end of the discharge pipe extends out of the bottom end of the heating sleeve, an electromagnetic valve is fixedly connected to the discharge pipe, the electromagnetic valve is located outside the sand spreading box and inside the heating sleeve.

[0015] Preferably, the heating element includes a heating gas box fixedly connected to the top of the sand-spreading box. The outlet end of the heating gas box is connected to two gas supply pipes. The two gas supply pipes extend into the two chambers respectively, and the outlet end of the gas supply pipe passes through the rotating plate and extends between the heating sleeve and the discharge pipe. The outlet end of the gas supply pipe is close to the bottom of the heating sleeve. The gas supply pipe is fixed to the air guide pipe through a connecting frame.

[0016] Preferably, the air inlet end of the heating gas box is fixedly connected to an air inlet pipe, and the end of the air inlet pipe is fixedly connected to and connected to an air inlet ring. The air inlet ring is sleeved on the air guide pipe and is located outside the sand spreading box. An air outlet is opened on the side wall of the air guide pipe, and the air guide ring communicates with the inside of the air inlet ring through the air outlet.

[0017] Preferably, the drying component includes absorbent cotton sleeved and fixed to the outer wall of the connecting cylinder. A limiting cylinder is provided over the absorbent cotton. The side wall of the limiting cylinder has several moisture inlet holes. The absorbent cotton communicates with the cavity through the moisture inlet holes. A sealing cap is fixed to the top of the limiting cylinder. The limiting cylinder is fixed to the outer wall of the connecting cylinder through the sealing cap. A moisture exhaust hole is provided on the outer wall of the connecting cylinder at a position corresponding to the sealing cap. Moisture on the absorbent cotton enters the connecting cylinder through the moisture exhaust hole.

[0018] Preferably, an air pump is fixedly connected to the air intake pipe.

[0019] Preferably, the bottom of the sand spreading box has a frustum-shaped structure, and the bottom dimension of the sand spreading box is smaller than the top dimension of the sand spreading box.

[0020] The present invention discloses the following technical effects:

[0021] 1. A rotatable rotating frame is installed inside the sand spreading box. The level of the locomotive is monitored by a level monitoring device, and the data is analyzed and processed so that the drive unit controls the rotation of the rotating frame. The rotating frame drives the rotation of the discharge pipe to ensure normal sand spreading.

[0022] 2. A heating sleeve is installed outside the discharge pipe, and hot air is supplied between the heating sleeve and the discharge pipe by a heating element to heat the discharge end of the discharge pipe, so that the discharge end of the discharge pipe is not easily blocked.

[0023] 3. A drying element is installed on the rotating frame, close to the discharge pipe. Therefore, the drying element can dry the sand material near the discharge pipe, preventing it from condensing due to excessive humidity. At the same time, when the hot air that has finished heating the discharge end of the discharge pipe passes through the rotating frame, the hot air can heat and dry the drying element and remove the moisture generated by the drying element, ensuring the continuous use of the drying element. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 A three-dimensional view of the sand-spreading device;

[0026] Figure 2 A three-dimensional diagram showing the positional relationship between the leveling instrument and the sand-spreading box;

[0027] Figure 3 A three-dimensional diagram showing the positional relationship between the two chambers;

[0028] Figure 4 A 3D view of the steering assembly;

[0029] Figure 5 A three-dimensional view showing the connection between the heating sleeve and the discharge pipe;

[0030] Figure 6 An exploded view showing the connection between the connecting cylinder and the drying component;

[0031] Figure 7 This is a structural diagram showing the connection relationship between the connecting cylinder and the drying component;

[0032] Figure 8 This is a schematic diagram showing the connection between the intake ring and the air guide pipe.

[0033] Among them, 1-sand spreading box, 2-partition plate, 3-chamber, 4-discharge pipe, 5-air guide pipe, 6-heating sleeve, 7-rotating plate, 8-connecting cylinder, 9-air guide ring, 10-air collecting pipe, 11-port, 12-drive motor, 13-mounting plate, 14-level tester, 15-solenoid valve, 16-heating air box, 17-air supply pipe, 18-connecting frame, 19-air inlet pipe, 20-air inlet ring, 21-air outlet, 22-absorbent cotton, 23-moisture inlet, 24-sealing cap, 25-humidity exhaust hole, 26-air pump, 27-limiting cylinder, 28-temperature sensor, 29-air supply hose. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] Reference Figure 1-8This invention provides a locomotive track sand spreading device, comprising: a sand spreading box 1, internally divided into two chambers 3 by a partition 2; two steering assemblies, respectively disposed in the two chambers 3, each steering assembly including a rotating frame disposed at the bottom of the chamber 3, the rotating frame penetrating the bottom end of the sand spreading box 1 and rotatably connected to the sand spreading box 1, a discharge pipe 4 fixedly connected to the bottom end of the rotating frame, a driving component and a level monitoring component fixedly connected to the outer wall of the sand spreading box 1, the driving component being connected to the rotating frame via an air guide pipe 5, and the level monitoring component being electrically connected to the driving component; a heating sleeve 6, sleeved on the outer wall of the discharge pipe 4 and fixedly connected to the bottom end of the rotating frame, a heating component disposed at the top of the sand spreading box 1, the air outlet of the heating component extending into the heating sleeve 6, the air outlet of the heating sleeve 6 communicating with the interior of the rotating frame, and the air outlet of the rotating frame communicating with the air inlet of the heating component via the air guide pipe 5; and a drying component fixed on the rotating frame, the air outlet of the drying component communicating with the air inlet of the air guide pipe 5.

[0037] During train operation, the horizontal monitoring component monitors the train's direction of travel and sends feedback to the drive component. The drive component operates, driving the rotating frame to rotate via the air guide pipe 5. The rotating frame drives the discharge pipe 4 to rotate, aligning the discharge port of the discharge pipe 4 with the rail. Simultaneously, the sand stored in the chamber 3 is discharged through the inlet of the discharge pipe 4. When the temperature at the discharge end of the discharge pipe 4 is low and there is a tendency for condensation, the heating component is activated. The heating component provides hot air between the heating sleeve 6 and the discharge pipe 4 to heat the discharge pipe 4. The gas that has completed heat exchange enters the rotating frame and finally flows back to the heating component via the air guide pipe 5.

[0038] Alternatively, when the sand in the sand-spreading box 1 has high moisture content and tends to condense, the heating element can be activated. The hot air in the heating element heats the sand and removes moisture from the drying element as it passes through the drying element on the rotating frame, so that the drying element continuously dries the sand, thus facilitating the discharge of the sand.

[0039] The rotating frame connects the air guide pipe 5 and the discharge pipe 4, enabling the drive component to rotate the discharge pipe 4.

[0040] The gas, after heat exchange, enters the rotating frame, which heats the drying components and evaporates the moisture absorbed by them. Simultaneously, the gas flow helps to expel moisture generated by the drying components, preventing it from remaining in the sand-spreading box 1. Furthermore, since the air guide pipe 5 contains heat, it can also heat and dry the sand material in the sand-spreading box 1.

[0041] Furthermore, a temperature sensor 28 is fixedly connected to the outer wall of the discharge pipe 4. The temperature sensor 28 is located between the heating sleeve 6 and the discharge pipe 4, and the temperature sensor 28 is close to the discharge end of the discharge pipe 4. The temperature sensor 28 provides feedback on the temperature of the discharge end of the discharge pipe 4, so that the operator can start the heating element to heat the discharge end.

[0042] The scheme is further optimized. The rotating frame includes a rotating plate 7 that passes through the bottom of the sand spreading box 1. The rotating plate 7 is rotatably connected to the bottom of the sand spreading box 1. The inlet end of the discharge pipe 4 passes through the rotating plate 7 and extends into the sand spreading box 1. The outlet end of the discharge pipe 4 is correspondingly set with the rail. Several connecting cylinders 8 are fixedly connected to the top of the rotating plate 7. The air inlet ends of the several connecting cylinders 8 all extend into the heating sleeve 6. The other end of the several connecting cylinders 8 is fixedly connected to and connected to a guide ring 9. The bottom of the guide pipe 5 is located inside the guide ring 9. The outer wall of the guide pipe 5 is fixedly connected to the inner wall of the guide ring 9 through several collecting pipes 10. The guide ring 9 is connected to the guide pipe 5 through the collecting pipes 10.

[0043] The rotating plate 7 is used to support the discharge pipe 4. The gas that has completed heat exchange by the heating sleeve 6 enters into different connecting cylinders 8. The temperature of the connecting cylinder 8 rises, which heats the drying element on the outer wall of the connecting cylinder 8, causing the moisture in the drying element to be discharged, rise and enter the connecting cylinder 8. At the same time, the gas in the connecting cylinder 8 is introduced into the air guide ring 9. The gas in the air guide ring 9 enters the air guide pipe 5 through multiple air collecting pipes 10.

[0044] The connecting cylinders 8 are preferably set to three or four, which are evenly fixed on the top of the rotating plate 7. The sand in the sand spreading box 1 enters the discharge pipe 4 through the gap between two adjacent connecting cylinders 8 and is then discharged.

[0045] In the above configuration, when the driving component drives the rotating plate 7 to rotate, the rotating plate 7 drives the connecting cylinder 8 and the drying component on the connecting cylinder 8 to rotate, which can stir and break up the sand in the sand spreading box 1, further preventing it from condensing.

[0046] The design is further optimized by providing an opening 11 at the top of the sand-spreading box 1. The air outlet of the air guide pipe 5 extends out of the sand-spreading box 1 through the opening 11. The driving component includes a drive motor 12 mounted at the top of the sand-spreading box 1. The drive motor 12 is fixedly connected to the top of the sand-spreading box 1 via a mounting plate 13, and the output end of the drive motor 12 is fixedly connected to the top of the air guide pipe 5. The opening 11 allows the air guide pipe 5 to pass through. The drive motor 12 drives the air guide pipe 5 to rotate, thereby driving the rotating plate 7 to rotate, thus adjusting the discharge position of the discharge pipe 4.

[0047] The scheme is further optimized. The level monitoring component includes a level tester 14 fixed to the outer wall of the sand spreading box 1. The level tester 14 is connected to the drive motor 12 through a control component.

[0048] Specifically, the control unit is a microprocessor. The level tester 14 monitors the train's level in real time and sends the data to the microprocessor. The microprocessor calculates correction values ​​based on the train's level and controls the drive motor 12 to operate. This connection and operation method is existing technology and will not be elaborated further here.

[0049] In a further optimized design, the top of the heating sleeve 6 is fixedly connected to the bottom of the rotating plate 7, and the bottom of the heating sleeve 6 is closed. The discharge end of the discharge pipe 4 extends out of the bottom of the heating sleeve 6, and an electromagnetic valve 15 is fixedly connected to the discharge pipe 4. The electromagnetic valve 15 is located outside the sand-spreading box 1 and inside the heating sleeve 6. The bottom of the heating sleeve 6 is closed to prevent the gas used for heating from escaping from the bottom of the heating sleeve 6. The presence of the electromagnetic valve 15 controls the discharge from the discharge pipe 4, that is, it can controllably realize the discharge and stop the discharge from the sand-spreading box 1. The heating sleeve 6 needs to be provided with space to accommodate the electromagnetic valve 15, and the electromagnetic valve 15 rotates with the discharge pipe 4.

[0050] The design is further optimized. The heating element includes a heating gas box 16 fixed to the top of the sand-spreading box 1. The outlet of the heating gas box 16 is connected to two air supply pipes 17, which extend into the two chambers 3 respectively. The outlet of the air supply pipes 17 passes through the rotating plate 7 and extends between the heating sleeve 6 and the discharge pipe 4. The outlet of the air supply pipes 17 is close to the bottom of the heating sleeve 6. The air supply pipes 17 are fixed to the air guide pipe 5 through the connecting bracket 18. The two air supply pipes 17 are respectively connected to the two chambers 3 and extend into the two heating sleeves 6. The outlet of the air supply pipes 17 is close to the discharge end of the discharge pipe 4. The hot air discharged by the air supply pipes 17 directly acts on the discharge end of the discharge pipe 4. The gas between the heating sleeve 6 and the discharge pipe 4 moves towards the rotating plate 7 and finally enters the connecting cylinder 8.

[0051] The air supply pipe 17 extends into the sand-spreading box 1 through the port 11. The air supply pipe 17 is a rigid pipe, fixed to the air guide pipe 5 via a connecting bracket 18. It rotates synchronously with the air guide pipe 5. An air supply hose 29 is connected to the air inlet end of the air supply pipe 17, and the air inlet end of the air supply hose 29 is connected to the air outlet end of the heating gas box 16. The air supply hose 29 is located outside the sand-spreading box 1 and is bendable, thus allowing normal air supply to the air supply pipe 17 even when it rotates.

[0052] In a further optimized design, an air inlet pipe 19 is fixedly connected to the air inlet end of the heating gas box 16. An air inlet ring 20 is fixedly connected to and connected to the end of the air inlet pipe 19. The air inlet ring 20 is sleeved on the air guide pipe 5 and is located outside the sand spreading box 1. An air outlet hole 21 is opened on the side wall of the air guide pipe 5. The air guide ring 9 communicates with the inside of the air inlet ring 20 through the air outlet hole 21. The top end of the air guide pipe 5 is closed and fixedly connected to the drive motor 12 to realize the rotation of the air guide pipe 5. Therefore, an air inlet ring 20 is sleeved on the outer wall of the air guide pipe 5, and an air outlet hole 21 is opened at the position corresponding to the air inlet ring 20. The gas in the air guide pipe 5 enters the air inlet ring 20 through the air outlet hole 21 and is introduced into the heating gas box 16 through the air inlet pipe 19. With this setting, both the rotation of the air guide pipe 5 and the air guiding of the air guide pipe 5 can be realized.

[0053] The solution is further optimized. The drying component includes absorbent cotton 22 that is sleeved and fixed to the outer wall of the connecting cylinder 8. A limiting cylinder 27 is sleeved over the absorbent cotton 22. Several moisture inlet holes 23 are opened on the side wall of the limiting cylinder 27. The absorbent cotton 22 communicates with the cavity 3 through the moisture inlet holes 23. A sealing cap 24 is fixedly connected to the top of the limiting cylinder 27. The limiting cylinder 27 is fixedly connected to the outer wall of the connecting cylinder 8 through the sealing cap 24. A moisture exhaust hole 25 is opened on the outer wall of the connecting cylinder 8 at the position corresponding to the sealing cap 24. The moisture on the absorbent cotton 22 is introduced into the connecting cylinder 8 through the moisture exhaust hole 25.

[0054] The absorbent cotton 22 is used to absorb the moisture contained in the sand in the sand spreading box 1. The purpose of setting the limiting cylinder 27 is to prevent the absorbent cotton 22 from directly contacting the sand. During the movement of the absorbent cotton 22 driven by the connecting cylinder 8, the absorbent cotton 22 will not be damaged too much. The gas in the connecting cylinder 8 heats the absorbent cotton 22, and the moisture absorbed by the absorbent cotton 22 evaporates. Since the air guide pipe 5 plays the role of air outlet, the outside of the connecting cylinder 8 is in a negative pressure state when the gas in the connecting cylinder 8 moves. The top of the absorbent cotton 22 is sealed by setting the sealing cap 24. Under the action of the gas in the connecting cylinder 8, the gas evaporated by the absorbent cotton 22 enters the connecting cylinder 8 through the vent hole 25 and is discharged with the gas in the connecting cylinder 8. Therefore, the service life of the absorbent cotton 22 can be guaranteed, and it does not need to be replaced frequently. It can also guarantee its performance. In fact, due to the heating effect of the gas, the temperature of the absorbent cotton 22 increases, which can improve its drying effect on the sand.

[0055] To further optimize the design, an air pump 26 is fixedly connected to the air inlet pipe 19. The air pump 26 is installed on the air inlet pipe 19 to discharge the gas after heat exchange in the heating sleeve 6. On the other hand, the gas moves from bottom to top in the connecting cylinder 8, creating a negative pressure outside the connecting cylinder 8. Therefore, the gas outside the connecting cylinder 8 can be drawn into the connecting cylinder 8 to dry the absorbent cotton 22.

[0056] Further optimization of the design involves a frustum-shaped bottom for the sand spreading box 1, with the bottom dimension smaller than the top dimension. This smaller bottom dimension facilitates the collection and discharge of sand.

[0057] Specifically, during train operation, the level tester 14 monitors the train's direction of travel and sends feedback to the drive motor 12. The drive motor 12 operates, driving the rotating plate 7 to rotate via the air guide pipe 5. The rotating plate 7 drives the discharge pipe 4 to rotate, aligning the discharge port of the discharge pipe 4 with the rail. Simultaneously, the sand stored in the chamber 3 is discharged through the inlet of the discharge pipe 4. When the temperature at the discharge end of the discharge pipe 4 is low and there is a tendency to condense, or when the sand in the sand-spreading box 1 has high moisture content and a tendency to condense, the heating air box 16 is activated. The heating air box 16 provides hot air between the heating sleeve 6 and the discharge pipe 4 through the air supply pipe 17 to heat the discharge pipe 4. The gas that has completed heat exchange enters the connecting cylinder 8. The connecting cylinder 8 heats and dries the absorbent cotton 22 and guides the discharged moisture into the connecting cylinder 8, which finally flows back to the heating air box 16 via the air guide pipe 5.

[0058] In the description of this invention, it should be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0059] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A locomotive track sand spreading device, characterized in that: include, The sand-spreading box (1) is divided into two chambers (3) by a partition (2); Two steering assemblies are respectively set in the two chambers (3). The steering assembly includes a rotating frame set at the bottom of the chamber (3). The rotating frame passes through the bottom end of the sand spreading box (1) and is rotatably connected to the sand spreading box (1). A discharge pipe (4) is fixedly connected to the bottom end of the rotating frame. A driving component and a level monitoring component are fixedly connected to the outer wall of the sand spreading box (1). The driving component is connected to the rotating frame through an air guide pipe (5). The level monitoring component is electrically connected to the driving component. A heating sleeve (6) is fitted on the outer wall of the discharge pipe (4) and fixed to the bottom end of the rotating frame. A heating element is provided at the top of the sand-spreading box (1). The air outlet of the heating element extends into the heating sleeve (6). The air outlet of the heating sleeve (6) is connected to the inside of the rotating frame. The air outlet of the rotating frame is connected to the air inlet of the heating element through the air guide pipe (5). A drying element is fixed on the rotating frame, and the air outlet of the drying element is connected to the air inlet of the air guide pipe (5). The rotating frame includes a rotating plate (7) passing through the bottom end of the sand spreading box (1). The rotating plate (7) is rotatably connected to the bottom end of the sand spreading box (1). The feed end of the discharge pipe (4) passes through the rotating plate (7) and extends into the sand spreading box (1). The discharge end of the discharge pipe (4) is correspondingly set with the rail. A plurality of connecting cylinders (8) are fixedly connected to the top end of the rotating plate (7). The air inlet ends of the plurality of connecting cylinders (8) all extend into the heating sleeve (6). The other end of the plurality of connecting cylinders (8) is fixedly connected to and connected to a guide ring (9). The bottom of the guide pipe (5) is located inside the guide ring (9). The outer wall of the guide pipe (5) is fixedly connected to the inner wall of the guide ring (9) through a plurality of gas collecting pipes (10). The guide ring (9) is connected to the guide pipe (5) through the gas collecting pipes (10). The drying component includes absorbent cotton (22) sleeved and fixed on the outer wall of the connecting cylinder (8). The absorbent cotton (22) is covered with a limiting cylinder (27). The side wall of the limiting cylinder (27) is provided with several moisture inlet holes (23). The absorbent cotton (22) communicates with the cavity (3) through the moisture inlet holes (23). A sealing cap (24) is fixedly connected to the top of the limiting cylinder (27). The limiting cylinder (27) is fixedly connected to the outer wall of the connecting cylinder (8) through the sealing cap (24). A moisture exhaust hole (25) is provided on the outer wall of the connecting cylinder (8) at a position corresponding to the sealing cap (24). The moisture on the absorbent cotton (22) is introduced into the connecting cylinder (8) through the moisture exhaust hole (25).

2. The locomotive track sand spreading device according to claim 1, characterized in that: The top of the sand-spreading box (1) is provided with an opening (11), and the air outlet of the air guide pipe (5) extends out of the sand-spreading box (1) through the opening (11). The driving component includes a drive motor (12) disposed at the top of the sand-spreading box (1). The drive motor (12) is fixedly connected to the top of the sand-spreading box (1) through a mounting plate (13), and the output end of the drive motor (12) is fixedly connected to the top of the air guide pipe (5).

3. The locomotive track sand spreading device according to claim 2, characterized in that: The level monitoring device includes a level tester (14) fixed to the outer wall of the sand spreading box (1), and the level tester (14) is connected to the drive motor (12) through a control device.

4. The locomotive track sand spreading device according to claim 1, characterized in that: The top end of the heating sleeve (6) is fixedly connected to the bottom end of the rotating plate (7). The bottom end of the heating sleeve (6) is closed. The discharge end of the discharge pipe (4) extends out of the bottom end of the heating sleeve (6). An electromagnetic valve (15) is fixedly connected to the discharge pipe (4). The electromagnetic valve (15) is located outside the sand-spreading box (1) and inside the heating sleeve (6).

5. The locomotive track sand spreading device according to claim 1, characterized in that: The heating component includes a heating gas box (16) fixedly connected to the top of the sand-spreading box (1). The outlet of the heating gas box (16) is connected to two gas supply pipes (17). The two gas supply pipes (17) extend into the two chambers (3) respectively. The outlet of the gas supply pipe (17) passes through the rotating plate (7) and extends between the heating sleeve (6) and the discharge pipe (4). The outlet of the gas supply pipe (17) is close to the bottom of the heating sleeve (6). The gas supply pipe (17) is fixed to the air guide pipe (5) through the connecting bracket (18).

6. The locomotive track sand spreading device according to claim 5, characterized in that: The heating gas box (16) has an air inlet pipe (19) fixedly connected to its air inlet end. The air inlet pipe (19) is fixedly connected to and connected to an air inlet ring (20). The air inlet ring (20) is sleeved on the air guide pipe (5) and is located outside the sand spreading box (1). The side wall of the air guide pipe (5) has an air outlet hole (21). The air guide ring (9) is connected to the air inlet ring (20) through the air outlet hole (21).

7. The locomotive track sand spreading device according to claim 6, characterized in that: An air pump (26) is fixedly connected to the air intake pipe (19).

8. The locomotive track sand spreading device according to claim 1, characterized in that: The bottom of the sand spreading box (1) has a frustum-shaped structure, and the bottom dimension of the sand spreading box (1) is smaller than the top dimension of the sand spreading box (1).

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