Mine car capable of preventing coal leakage and raw coal transportation system and method

Abstract

A mine car capable of preventing coal leakage comprises a car body and a wheel assembly, the two sides of the car body are each provided with a guide plate in a sliding mode, when the car body moves to a coaling station, the guide plates can move upwards, and a guide space used for guiding coal flow is formed between the parts, located above the car body, of the two guide plates. The guide space is gradually reduced in the direction from top to bottom; mounting assemblies used for mounting the guide plates are arranged on the two sides of the vehicle body, each mounting assembly comprises a top limiting frame fixedly arranged on the top of the vehicle body and a containing groove fixedly formed in the bottom of the vehicle body, the guide plates penetrate through the top limiting frames, and the bottoms of the guide plates can fall into the containing grooves. According to the mine car capable of preventing coal leakage and the raw coal transportation system and method, in the raw coal receiving process, the guide plate moves upwards to form the guide space, all the raw coal entering the guide space can smoothly fall into the car body, and the effect of preventing coal leakage is achieved.

Description

Technical Field

[0001] The invention relates to the field of coal mine vehicles, in particular to a mine vehicle capable of preventing coal leakage, a raw coal transportation system and a method. Background Art

[0002] Mine cars are special vehicles for mine rail transportation. In order to adapt to the narrow conditions of underground tunnels, the dimensions of mine cars are generally compact. In coal mines, when using mine cars to transport raw coal, the main thing is to release the raw coal temporarily stored in the coal bunker into the mine car, and then drive the mine car to transfer the raw coal to other locations. In the process of raw coal falling from the coal bunker, in order to ensure the efficiency of coal release, the coal outlet of the coal bunker cannot be too small, and the size of the mine car itself is relatively limited, resulting in some raw coal falling to the side of the mine car instead of entering the mine car. Over time, a large-scale coal pile will be formed below the coal outlet, that is, near the coal loading station, which requires special cleaning, which is more cumbersome. Summary of the invention

[0003] In order to solve the deficiencies in the prior art, the present invention provides a mine car, a raw coal transportation system and a method that can prevent coal leakage. In the process of receiving the raw coal, a guide space is formed by moving the guide plate upward, and the raw coal entering the guide space can fall smoothly into the car body, thereby achieving the effect of preventing coal leakage.

[0004] In order to achieve the above object, the specific scheme adopted by the present invention is:

[0005] A mine car capable of preventing coal leakage comprises a car body and a wheel assembly, wherein a guide plate is slidably provided on each side of the car body, and when the car body moves to a coal loading station, the guide plate can move upward, and a guide space for guiding coal flow is formed between two guide plates located above the car body, and the guide space gradually shrinks in a direction from top to bottom;

[0006] Both sides of the vehicle body are provided with mounting components for mounting the guide plate, and the mounting components include a top limit frame fixedly arranged on the top of the vehicle body and a receiving groove fixedly arranged on the bottom of the vehicle body, the guide plate passes through the top limit frame, and the bottom of the guide plate can fall into the receiving groove.

[0007] Preferably, a first positioning top block is fixedly arranged in the receiving groove, the first positioning top block is conical and the tip thereof faces the vehicle body, and when the bottom of the guide plate falls into the receiving groove, the top of the guide plate is located between the first positioning top block and the vehicle body;

[0008] A second positioning top block is fixedly arranged in the top limiting frame. The second positioning top block is conical in shape with its tip facing away from the vehicle body. The guide plate passes between the second positioning top block and the inner wall of the top limiting frame.

[0009] Preferably, the mounting assembly further comprises at least one middle limit frame fixedly connected to the vehicle body, the middle limit frame being located between the top limit frame and the accommodating groove, and the guide plate passing through the middle limit frame.

[0010] Preferably, a connecting plate is fixedly connected to the lower part of the guide plate on the side facing away from the vehicle body, and the connecting plate is located below the middle limit frame. When the vehicle body moves to the coal loading station, the connecting plate can be pushed upward to drive the guide plate to move upward synchronously.

[0011] Preferably, a limiting block is fixedly connected to the top of the guide plate on a side facing away from the vehicle body, and the limiting block can cooperate with the top limiting frame to limit the guide plate during the guide plate's falling process.

[0012] Preferably, the guide plate includes a wear-resistant surface layer, a woven layer and an elastic base layer which are fixedly arranged in sequence. When the guide space is formed between the two guide plates, the wear-resistant surface layer faces the guide space. A plurality of metal reinforcement wires are fixedly embedded in the woven layer, and the metal reinforcement wires extend along the moving direction of the guide plate.

[0013] A raw coal conveying system includes a coal bunker, two lifting devices and a plurality of the above-mentioned mine cars capable of preventing coal leakage, wherein the two lifting devices are respectively located on both sides of the coal loading station, and the lifting device includes a lifting block capable of lifting, lowering and translating, and when the vehicle body moves to the coal loading station, the lifting block can translate until it is connected with the guide plate, and the lifting block can move upward to drive the guide plate to move upward synchronously.

[0014] Preferably, the lifting device comprises a lifting driver, the lifting driver is drivingly connected to a horizontally arranged support plate, a translation driver is fixedly arranged on the support plate, and an output end of the translation driver is fixedly connected to the lifting block.

[0015] Preferably, the system also includes a coal flow control device, which includes a thruster fixedly arranged on the side of the coal loading station, the output end of the thruster is fixedly connected to an upper connecting plate and a lower connecting plate parallel to each other, a rotating seat is rotatably arranged on the upper connecting plate, a motor for driving the rotating seat to rotate is fixedly arranged on the lower connecting plate, a guide groove is obliquely arranged on the rotating seat, and the thruster can drive the guide groove to move to the top of the mine car.

[0016] A raw coal conveying method, based on the above raw coal conveying system, comprises the following steps:

[0017] driving the car body to move to the coal loading position;

[0018] Using the lifting device to drive the two guide plates to move upward until the parts of the two guide plates located above the vehicle body form the guide space;

[0019] The raw coal is discharged from the coal outlet of the coal bunker into the guide space, and the guide plate is used to control the raw coal to fall into the vehicle body.

[0020] The mine car of the present invention can, in the process of receiving the raw coal, form a guide space by moving the guide plate upwards, so that the raw coal entering the guide space can fall smoothly into the car body, thereby achieving the effect of preventing coal leakage; the raw coal conveying system of the present invention can control the direction of the raw coal in the process of falling into the car body, thereby ensuring that the raw coal at various positions in the car body is evenly distributed, thereby avoiding wasting space in the mine car. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the overall structure of the mine car of the present invention;

[0023] Figure 2 It is a schematic diagram of the state when the guide plate moves upward to form a guide space;

[0024] Figure 3 It is a structural schematic diagram of the guide plate;

[0025] Figure 4 is a schematic diagram of the structure of the lifting device;

[0026] Figure 5 It is a schematic diagram of the coordination between the lifting device and the mine car;

[0027] Figure 6 is a schematic diagram of the structure of the coal flow control device;

[0028] Figure 7 It is a schematic diagram of the coordination between the coal flow control device and the mine car.

[0029] Figure markings: 1-car body, 2-wheel assembly, 3-accommodating groove, 4-first positioning top block, 5-guide plate, 6-connecting plate, 7-middle limit frame, 8-top limit frame, 9-limit block, 10-second positioning top block, 11-receiving part, 12-wear-resistant surface layer, 13-woven layer, 14-metal reinforcement wire, 15-elastic base layer, 16-first base, 17-lifting drive, 18-support plate, 19-side plate, 20-translational drive, 21-block rod, 22-fixed block, 23-wear-resistant bushing, 24-lifting block, 25-track foundation, 26-track, 27-second base, 28-thruster, 29-reinforcement block, 30-upper connecting plate, 31-lower connecting plate, 32-reinforcement rod, 33-motor, 34-rotating seat, 35-guide groove, 36-coal outlet. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] like Figure 1 and 2 As shown, a mine car capable of preventing coal leakage comprises a car body 1 and a wheel assembly 2. A guide plate 5 is slidably provided on each side of the car body 1. When the car body 1 moves to the coal loading station, the guide plate 5 can move upward, and a guide space for guiding the coal flow is formed between the two guide plates 5 located above the car body 1, and the guide space gradually decreases from top to bottom. Both sides of the car body 1 are provided with mounting assemblies for mounting the guide plates 5. The mounting assemblies comprise a top limit frame 8 fixedly provided on the top of the car body 1 and a receiving groove 3 fixedly provided on the bottom of the car body 1. The guide plate 5 passes through the top limit frame 8, and the bottom of the guide plate 5 can fall into the receiving groove 3.

[0032] In the process of transporting raw coal, the mine car is first moved to the coal loading station below the coal outlet 36 of the coal bin or other equipment, and then the two guide plates 5 are driven to move upward until most of the guide plates 5 reach the top of the car body 1. At this time, a guide space is formed between the two guide plates 5 located above the car body 1. Then, the raw coal is discharged from the coal outlet 36, so that the raw coal falls into the guide space. When the coal outlet 36 is aligned with the car body 1, most of the raw coal can fall directly into the car body 1, but some of the raw coal will fall onto the guide plate 5. Because the guide space is gradually reduced from top to bottom, that is, the guide plate 5 is tilted, this part of the raw coal that falls on the guide plate 5 can slide down along the guide plate 5 and smoothly enter the car body 1, so that the guide plate 5 is used to guide the raw coal to achieve the effect of preventing coal leakage. In addition, by setting the mounting assembly, in the process of driving the guide plate 5 to move upward, the top limit frame 8 can limit the moving direction of the guide plate 5 to prevent the guide plate 5 from tilting and causing coal leakage. After the coal loading is completed, the guide plate 5 is released to allow the guide plate 5 to fall naturally under the action of gravity until the bottom of the guide plate 5 falls into the receiving groove 3, and the mine car can be driven to transport the raw coal to other workstations.

[0033] The mine car of the present invention can form a guide space by moving the guide plate 5 upwards during the process of receiving the raw coal, so that the raw coal entering the guide space can smoothly fall into the car body 1, thereby achieving the effect of preventing coal leakage.

[0034] In order to ensure that the guide space can be gradually reduced in the direction from top to bottom, and thus ensure that the raw coal falling on the guide plate 5 can smoothly move downward along the guide plate 5 into the vehicle body 1, a first positioning top block 4 is fixedly arranged in the receiving groove 3. The first positioning top block 4 is conical and its tip faces the vehicle body 1. When the bottom of the guide plate 5 falls into the receiving groove 3, the top of the guide plate 5 is located between the first positioning top block 4 and the vehicle body 1; a second positioning top block 10 is fixedly arranged in the top limit frame 8. The second positioning top block 10 is conical and its tip faces away from the vehicle body 1. The guide plate 5 passes between the second positioning top block 10 and the inner wall of the top limit frame 8. By setting the first positioning top block 4, the bottom of the guide plate 5 can be close to the vehicle body 1, and by setting the second positioning top block 10, the top of the guide plate 5 can be away from the vehicle body 1. The cooperation between the first positioning top block 4 and the second positioning top block 10 can make the guide plate 5 tilted as a whole, and the distance between the tops of the two guide plates 5 is greater than the distance between the bottoms. Furthermore, in the process of moving the guide plates 5 upward, the two guide plates 5 still maintain their original inclination angles, thereby achieving the effect of ensuring that the guide space can be gradually reduced from top to bottom.

[0035] In order to further limit the direction of the guide plate 5 and fully avoid the guide space deformation caused by the deflection of the guide plate 5, which in turn causes coal leakage, the installation assembly also includes at least one middle limit frame 7 fixedly connected to the vehicle body 1, the middle limit frame 7 is located between the top limit frame 8 and the receiving groove 3, and the guide plate 5 passes through the middle limit frame 7. The top limit frame 8, the middle limit frame 7 and the receiving groove 3 cooperate with each other to fully limit the moving direction of the guide plate 5, and can ensure that the guide space is gradually reduced from top to bottom during the upward movement of the guide plate 5, and can also ensure that the bottom of the guide plate 5 can smoothly fall into the receiving groove 3 during the downward movement of the guide plate 5.

[0036] Considering that the guide plate 5 is flat and the bottom falls into the receiving groove 3, the guide plate 5 cannot be directly pushed upward from the bottom or the side. In order to facilitate the upward movement of the guide plate 5, the lower part of the guide plate 5 facing away from the vehicle body 1 is fixedly connected with a connecting plate 6, and the connecting plate 6 is located below the middle limit frame 7. When the vehicle body 1 moves to the coal loading station, the connecting plate 6 can be pushed upward to drive the guide plate 5 to move upward synchronously. After the vehicle body 1 moves to the coal loading station, the connecting plate 6 is pushed upward by the lifting device, which can drive the guide plate 5 to move upward synchronously.

[0037] In order to prevent the guide plate 5 from being misaligned with the receiving groove 3 during the falling process, thereby causing the guide plate 5 to completely fall and separate from the vehicle body 1, a limiting block 9 is fixedly connected to the top of the side of the guide plate 5 facing away from the vehicle body 1, and the limiting block 9 can cooperate with the top limiting frame 8 to limit the guide plate 5 during the falling process of the guide plate 5. Specifically, during the falling process of the guide plate 5, the limiting block 9 will fall synchronously with the guide plate 5, and when the limiting block 5 hits the top limiting frame 8, the guide plate 5 can be limited to prevent the guide plate 5 from being completely separated from the vehicle body 1. On the other hand, because the limit block 9 itself has a certain weight and the guide plate 5 is arranged at an angle, when the guide plate 5 is pushed upward to form a guide space, the top of the guide plate 5 will be slightly bent under the action of the gravity of the limit block 9, so that the part of the guide plate 5 located between the top limit frame 8 and the limit block 9 forms a slightly curved receiving part 11. When the raw coal falls onto the receiving part 11, it will impact the receiving part 11, causing the receiving part 11 to bend to a greater extent, resulting in the receiving part 11 rebounding, that is, the receiving part 11 will rebound in the direction close to the middle of the mine car 1, and throw the raw coal that falls onto the receiving part 11 toward the car body 1, further avoiding coal leakage.

[0038] like Figure 3As shown, because the guide plate 5 needs to withstand the impact of the raw coal, it needs to have a certain deformation ability, and can also fully cooperate with the limit block 9 to achieve the effect of throwing the raw coal falling on the receiving part 1 into the car body 1. Therefore, in the present invention, the guide plate 5 includes a wear-resistant surface layer 12, a braided layer 13 and an elastic base layer 15 fixedly arranged in sequence. When a guide space is formed between the two guide plates 5, the wear-resistant surface layer 12 faces the guide space, and a plurality of metal reinforcing wires 14 are fixedly embedded in the braided layer 13, and the metal reinforcing wires 14 extend along the moving direction of the guide plate 5. The wear-resistant surface layer 12 is used to improve the wear resistance of the guide plate 5 and prevent the guide plate 5 from being worn out quickly. In actual implementation, the wear-resistant surface layer 12 can be an old belt removed from an underground belt conveyor, which has good wear resistance and is waste recycling, which can reduce costs. The metal reinforcing wire 14 is used to improve the elasticity of the guide plate 5, so that after the raw coal impact causes the guide plate 5 to deform, the guide plate 5 can also quickly recover. The metal reinforcing wire 14 can be made of alloy steel, which is a conventional material. The braided layer 13 is used to fix the metal reinforcing wire 14 and is connected to the wear-resistant surface layer 12. The braided layer 13 can be made of non-woven fabric. The elastic base layer 15 is used to ensure the basic resilience of the guide plate 5. The elastic base layer 15 can be made of conventional materials such as POM board.

[0039] The present invention further provides a raw coal conveying system, including a coal bunker, two lifting devices and a plurality of the above-mentioned mine cars capable of preventing coal leakage, the two lifting devices are respectively on both sides of the coal loading station, the lifting device includes a lifting block 24 that can be raised and lowered and translated, when the car body 1 moves to the coal loading station, the lifting block 24 can translate until it is connected with the guide plate 5, and the lifting block 24 can move upward to drive the guide plate 5 to move upward synchronously.

[0040] After the raw coal is mined, it can be transported to the coal bunker for temporary storage through conveyors and transfer machines. When it is necessary to transfer, the mine car is driven to move below the coal bunker exit, and then the lifting block 24 of the lifting device is used to push the connecting plate 6 on the guide plate 5 to move, so that the connecting plate 6 drives the guide plate 5 to move upward, until the two guide plates 5 form a guide space above the car body 1, and then the coal outlet 36 of the coal bunker is opened, so that the raw coal in the coal bunker falls from the coal outlet 36 into the guide space. Under the action of the guide plate 5, the raw coal falls smoothly into the car body 1, realizing the initial transfer of the raw coal, and finally the mine car is driven to transport the raw coal to other workstations.

[0041] The lifting block 24 needs to first be translated to reach the bottom of the connecting plate 6, and then needs to be able to move upward and push the connecting plate 6 and the guide plate 5 to move upward synchronously. Figure 4As shown, the lifting device includes a lifting drive 17, which is driven and connected to a horizontally arranged support plate 18, on which a translation drive 20 is fixedly arranged, and the output end of the translation drive 20 is fixedly connected to a lifting block 24. After the mine car arrives below the coal outlet 36, the translation drive 20 of the lifting device first acts and drives the lifting block 24 to move toward the car body 1, until the lifting block 24 moves to the bottom of the connecting plate 6, the translation drive 20 stops, and then the lifting drive 17 acts and drives the support plate 18 to move upward, and the translation drive 20 and the lifting block 24 are driven to move synchronously during the upward movement of the support plate 18, so that the connecting plate 6 and the guide plate 5 are pushed upward synchronously by the lifting block 24. After the car body 1 is filled with raw coal, the lifting drive 17 retracts until the bottom of the guide plate 5 falls into the receiving groove 3, and the lifting drive 17 stops, and then the translation drive 20 retracts and pulls the lifting block 24 to reset, and then the guide plate 5 on the next mine car can be prepared for lifting. The lifting device has a simple structure, and only needs to control the lifting drive 17 and the translation drive 20, and the control process is also simple. In addition, because the underground mine cars move along the fixed track 26, the position of the mine cars when they arrive below the coal outlet 36 is also fixed, so the lifting drive 17 and the translation drive 20 only need to move within a fixed range according to a fixed control program, and the control method is simpler. In one embodiment of the present invention, the lifting drive 17 can be set as a hydraulic cylinder, and the translation drive 20 can be set as a cylinder.

[0042] Because the gravity of the guide plate 5 is completely applied to the piston rod of the translation driver 20 during the lifting process, in order to prevent the piston rod from being damaged due to excessive force, a fixed block 22 is fixedly arranged on the support plate 18, and a channel is provided on the fixed block 22, and a wear-resistant bushing 23 is fixedly arranged inside the channel. The piston rod of the translation driver 20 passes through the wear-resistant bushing 23, so that the piston rod is reinforced by the fixed block 22 to prevent the piston rod from bending and deforming due to long-term pressure. The fixed block 22 can also control the driving direction of the translation driver 20 to ensure that the translation driver 20 can smoothly push the lifting block 24 to the bottom of the connecting plate 6. Two mutually parallel side plates 19 can also be fixedly arranged on the support plate 18, and at least one blocking rod 21 is fixedly connected between the two side plates 19. The blocking rod 21, the two side plates 19 and the support plate 18 together enclose a space for accommodating the translation driver 20.

[0043] Considering that the guide plate 5 needs to move upward a certain distance, the corresponding lifting drive 17 needs to have a certain stroke. Therefore, it is necessary to select the setting mode of the lifting drive 17 in combination with the actual situation underground. Figure 5As shown, if the track 26 is fixed on a track foundation 25 for raising the track 26 so that the distance between the track 25 and the bottom of the tunnel is larger, the lifting drive 17 can be fixedly arranged at the bottom of the tunnel, and a first base 16 can be provided accordingly for reinforcing the lifting drive 17. If the height of the track foundation 25 is lower and the distance between the track 26 and the bottom of the tunnel is smaller, it is necessary to drill a hole at the bottom of the tunnel and then fix the lifting drive 17 in the drilled hole.

[0044] The present invention sets two guide plates 5 that can be raised and lowered on the mine car. The two guide plates 5 can form a guide space for guiding the raw coal to avoid the problem of coal leakage. However, when the raw coal falls from the coal outlet 36 into the car body 1, another problem will arise. That is, when the raw coal falls into the car body 1, a conical coal pile will naturally form, resulting in uneven distribution of the raw coal in the mine car 1, affecting the coal transportation efficiency of the mine car. In order to solve this problem, the system also includes a coal flow control device, such as Figure 6 and 7 As shown, the coal flow control device includes a propeller 28 fixedly arranged on the side of the coal loading station, and the output end of the propeller 28 is fixedly connected with an upper connecting plate 30 and a lower connecting plate 31 which are parallel to each other. A rotating seat 34 is rotatably arranged on the upper connecting plate 30, and a motor 33 for driving the rotating seat 34 to rotate is fixedly arranged on the lower connecting plate 31. A guide groove 35 is obliquely arranged on the rotating seat 34, and the propeller 28 can drive the guide groove 35 to move above the mine car. After the two guide plates 5 form a guide space, the propeller 28 is activated and drives the rotating seat 34 and the guide groove 35 to move above the car body 1, and then the motor 33 is activated and drives the guide groove 35 to rotate to the lower end facing the first direction, and then the coal outlet 36 is opened, and the raw coal first falls on the guide groove 35 during the falling process, and then moves along the guide groove 35 to the first direction, and finally falls from the guide groove 35 into the car body 1. After a period of time, the motor 33 is activated again and drives the guide groove 35 to rotate to the lower end facing the second direction, so that the raw coal can be guided to move in the second direction. By analogy, by adjusting the direction of the guide groove 35, the raw coal can be controlled to fall into the car body 1 in different directions, thereby ensuring that the raw coal in the car body 1 is evenly distributed, avoiding the situation where the local stacking height is too high and a large number of vacancies appear in some parts, making full use of the space of each part of the car body 1, effectively increasing the coal transportation capacity of a single car body 1, and thus improving the efficiency of raw coal transportation. In the present invention, the thruster 28 can also be set as a hydraulic cylinder.

[0045] The coal flow control device also includes a second base 27, on which a propeller 28 is fixedly disposed, and on which a reinforcing block 29 is also fixedly disposed, and the output end of the propeller 28 passes through the reinforcing block 29, so that the propeller 28 is reinforced by the reinforcing block 29 to ensure the structural stability of the propeller 28. Similarly, a plurality of reinforcing rods 32 may be fixedly connected between the upper connecting plate 30 and the lower connecting plate 31.

[0046] It should also be noted that because the guide groove 35 in the coal flow control device is rotatable, the coal flow control device does not need to be set on the left and right sides of the mine car. In actual application, the coal flow control can be staggered with the two lifting devices. It is only necessary to ensure that the thruster 28 can smoothly move the guide groove 35 to the top of the car body 1.

[0047] Finally, the present invention provides a raw coal conveying method. Based on the above raw coal conveying system, the method includes S1 to S3.

[0048] S1, driving the vehicle body 1 to move to the coal loading position. The coal loading position is below the coal outlet 36 that the mine vehicle needs to reach.

[0049] S2. Use the lifting device to drive the two guide plates 5 to move upward until the parts of the two guide plates 5 located above the vehicle body 1 form a guiding space.

[0050] S3. Discharge the raw coal from the coal outlet 36 of the coal bunker into the guide space, and use the guide plate 5 to control the raw coal to fall into the car body 1.

[0051] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0052] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A mine car capable of preventing coal leakage, comprising a car body (1) and a wheel assembly (2), characterized in that: A guide plate (5) is slidably provided on each side of the car body (1); when the car body (1) moves to the coal loading station, the guide plate (5) can move upward, and a guide space for guiding the coal flow is formed between the two guide plates (5) located above the car body (1); the guide space gradually shrinks in a direction from top to bottom; Both sides of the vehicle body (1) are provided with mounting components for mounting the guide plate (5), the mounting components comprising a top limit frame (8) fixedly arranged on the top of the vehicle body (1) and a receiving groove (3) fixedly arranged on the bottom of the vehicle body (1), the guide plate (5) passes through the top limit frame (8), and the bottom of the guide plate (5) can fall into the receiving groove (3).

2. A mine car capable of preventing coal leakage as claimed in claim 1, characterized in that: A first positioning top block (4) is fixedly arranged in the receiving groove (3); the first positioning top block (4) is conical in shape with its tip facing the vehicle body (1); when the bottom of the guide plate (5) falls into the receiving groove (3), the top of the guide plate (5) is located between the first positioning top block (4) and the vehicle body (1); A second positioning top block (10) is fixedly arranged in the top limit frame (8); the second positioning top block (10) is conical in shape with its tip facing away from the vehicle body (1); and the guide plate (5) passes between the second positioning top block (10) and the inner wall of the top limit frame (8).

3. A mine car capable of preventing coal leakage as claimed in claim 1, characterized in that: The mounting assembly further comprises at least one middle limit frame (7) fixedly connected to the vehicle body (1), the middle limit frame (7) being located between the top limit frame (8) and the receiving groove (3), and the guide plate (5) passing through the middle limit frame (7).

4. A mine car capable of preventing coal leakage as claimed in claim 3, characterized in that: A connecting plate (6) is fixedly connected to the lower part of the guide plate (5) on the side facing away from the vehicle body (1), and the connecting plate (6) is located below the middle limit frame (7). When the vehicle body (1) moves to the coal loading station, the connecting plate (6) can be pushed to move upward, thereby driving the guide plate (5) to move upward synchronously.

5. A mine car capable of preventing coal leakage as claimed in claim 1, characterized in that: A limiting block (9) is fixedly connected to the top of the guide plate (5) on the side facing away from the vehicle body (1); during the falling process of the guide plate (5), the limiting block (9) can cooperate with the top limiting frame (8) to limit the guide plate (5).

6. A mine car capable of preventing coal leakage as claimed in claim 1, characterized in that: The guide plate (5) comprises a wear-resistant surface layer (12), a braided layer (13) and an elastic base layer (15) which are fixedly arranged in sequence; when the guide space is formed between the two guide plates (5), the wear-resistant surface layer (12) faces the guide space; a plurality of metal reinforcing wires (14) are fixedly embedded in the braided layer (13), and the metal reinforcing wires (14) extend along the moving direction of the guide plate (5).

7. Raw coal conveying system, characterized in that: The invention comprises a coal bunker, two lifting devices and a plurality of mine cars capable of preventing coal leakage as described in any one of claims 1 to 6, wherein the two lifting devices are respectively located on both sides of the coal loading station, and the lifting device comprises a lifting block (24) capable of lifting, lowering and translating. When the car body (1) moves to the coal loading station, the lifting block (24) can translate until it is connected with the guide plate (5), and the lifting block (24) can move upward to drive the guide plate (5) to move upward synchronously.

8. The raw coal conveying system according to claim 7, characterized in that: The lifting device comprises a lifting drive (17), wherein the lifting drive (17) is drivingly connected to a horizontally arranged support plate (18), a translation drive (20) is fixedly arranged on the support plate (18), and an output end of the translation drive (20) is fixedly connected to the lifting block (24).

9. The raw coal conveying system according to claim 7, characterized in that: The system further comprises a coal flow control device, the coal flow control device comprising a propeller (28) fixedly arranged on the side of the coal loading station, the output end of the propeller (28) being fixedly connected to an upper connecting plate (30) and a lower connecting plate (31) parallel to each other, a rotating seat (34) being rotatably arranged on the upper connecting plate (30), a motor (33) for driving the rotating seat (34) to rotate being fixedly arranged on the lower connecting plate (31), a guide groove (35) being obliquely arranged on the rotating seat (34), and the propeller (28) being capable of driving the guide groove (35) to move to the top of the mine car.

10. A method for conveying raw coal, characterized in that: Based on the raw coal conveying system according to any one of claims 7 to 9, the method comprises the following steps: driving the vehicle body (1) to move to a coal loading position; Using the lifting device to drive the two guide plates (5) to move upward until the parts of the two guide plates (5) located above the vehicle body (1) form the guide space; The raw coal is discharged from the coal outlet (36) of the coal bunker into the guide space, and the guide plate (5) is used to control the raw coal to fall into the vehicle body (1).

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