Air rail vehicle and air rail transportation system

Abstract

The utility model relates to the technical field of sky rail loading and unloading, in particular to a sky rail vehicle and a sky rail transportation system.The sky rail vehicle comprises a vehicle body, bottom doors arranged in pairs are arranged at the bottom of the vehicle body, each pair of bottom doors comprises a first bottom door and a second bottom door which are symmetrically arranged, and the first bottom door and the second bottom door are both hinged to the vehicle body; a bottom opening and closing mechanism is arranged between the first bottom door and the second bottom door and comprises a support and a main shaft, the support is connected with the bottom of the vehicle body, the main shaft is rotationally arranged on the support, a driving arm and a middle connecting piece are fixedly arranged on the main shaft, and a left connecting piece and a right connecting piece are hinged to the two ends of the middle connecting piece respectively. The end, away from the middle connecting piece, of the left connecting piece is hinged to the first bottom door, the end, away from the middle connecting piece, of the right connecting piece is hinged to the second bottom door, and when the bottom doors are closed, the left connecting piece, the middle connecting piece and the right connecting piece are collinear to form a mechanical dead point. By arranging the bottom opening and closing mechanism and the sliding top door, the loading and unloading efficiency of the sky rail vehicle can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of empty rail loading and unloading, in particular to an empty rail vehicle and an empty rail transportation system. Background Art

[0002] In recent years, the use of aerial rail systems for coal transportation has become increasingly widespread. For example, the Heishan Coal Mine aerial rail system utilizes intelligently controlled suspended monorail transport equipment. The line is 67.419 kilometers long, with a single vehicle rated for 35 tons and a design speed of 50 kilometers per hour. This system not only improves the efficiency and safety of coal transportation, but also reduces transportation costs, promoting the sustainable development of the coal industry.

[0003] In the coal transportation scenario, the sky rail system, as a major link, can effectively connect multiple modes of transportation. However, it requires multiple modes of transportation to cooperate with each other and carry out reasonable transportation organization planning to fully utilize the system's transportation capacity. Among them, the efficiency of sky rail loading and unloading has a great impact on the overall transportation efficiency. It is necessary to design an efficient loading and unloading structure to improve the loading and unloading efficiency of the sky rail. Utility Model Content

[0004] The purpose of the utility model is to address the defects of the existing technology and provide an empty rail vehicle and an empty rail transportation system, which can improve the loading and unloading efficiency of the empty rail vehicle by arranging a bottom opening and closing mechanism and a sliding top door.

[0005] In order to solve the above technical problems, in a first aspect, the utility model provides an aerial rail vehicle, including a vehicle body, wherein a pair of bottom doors are arranged at the bottom of the vehicle body, each pair of bottom doors includes a first bottom door and a second bottom door arranged symmetrically, the first bottom door is hinged to the vehicle body at one end close to the second bottom door, and the second bottom door is hinged to the vehicle body at one end close to the first bottom door, and a bottom opening and closing mechanism is arranged between the first bottom door and the second bottom door, and the bottom opening and closing mechanism includes a bracket and a main shaft, the bracket is connected to the bottom of the vehicle body, the main shaft is rotatably arranged on the bracket, a driving arm and a middle connecting member are fixedly arranged on the main shaft, and the two ends of the middle connecting member are respectively hinged with a left connecting member and a right connecting member, the end of the left connecting member away from the middle connecting member is hinged to the first bottom door, and the end of the right connecting member away from the middle connecting member is hinged to the second bottom door, when the first bottom door and the second bottom door are closed, the left connecting member, the middle connecting member and the right connecting member are collinear to form a mechanical dead point, and the driving arm is used to drive the main shaft to rotate and break through the mechanical dead point.

[0006] The utility model provides a skytrain vehicle with symmetrically arranged bottom doors and a bottom opening and closing mechanism disposed between the two bottom doors, enabling the mechanism to open and close both bottom doors simultaneously, thereby improving opening and closing efficiency. The bottom opening and closing mechanism utilizes the principle of a mechanical dead point formed by the collinearity of the left, middle, and right connecting members, ensuring that the bottom doors remain stable after closing.

[0007] In some embodiments, the driving arm includes a first driving arm and a second driving arm, and the first driving arm and the second driving arm are centrally symmetrically arranged at two ends of the main shaft.

[0008] The utility model provides a centrally symmetrical first and second driving arms. When the first driving arm rotates upward counterclockwise to open the two bottom doors, the second driving arm rotates downward counterclockwise, allowing the second driving arm to be subsequently rotated upward clockwise to close the bottom doors. Furthermore, the first and second driving arms are arranged at both ends of the main shaft, which can avoid affecting unloading.

[0009] Furthermore, a roller is rotatably provided at the end of the driving arm.

[0010] The utility model provides a roller on the driving arm, and the roller drives the driving arm to rotate, thereby reducing the friction between the touch inclined surface of the touch platform and the driving arm and reducing the required driving force.

[0011] In some embodiments, two top doors are provided on the top of the vehicle body, and the two top doors are symmetrically arranged along the axis of the vehicle body. The top doors are slidably connected to the vehicle body along an axis perpendicular to the vehicle body, and a driving mechanism is provided between the two top doors, and the driving mechanism is used to drive the top doors to open.

[0012] The utility model provides a top door which is slidably arranged on the top of the vehicle body so that the top door can be opened automatically, thereby improving loading efficiency.

[0013] In the second aspect, the utility model provides an aerial rail transportation system, including a touch mechanism, wherein the touch mechanism includes two parallel longitudinal beams, tracks are set at both ends of the longitudinal beams, the tracks are arranged perpendicular to the longitudinal beams, the longitudinal beams are parallel to the vehicle body axis, a touch platform is slidably set on the longitudinal beams, and a touch inclined surface is set on the upper end surface of the touch platform. The touch inclined surfaces of the touch platforms on the two longitudinal beams are respectively used to cooperate with the first driving arm and the second driving arm to realize the opening and closing of the bottom door.

[0014] The utility model provides a track. When the empty rail vehicle moves to the unloading area, the longitudinal beam can approach the driving arm of the empty rail vehicle along the track. A touch platform is slidably provided on the longitudinal beam. The touch platform can slide along the longitudinal beam, so that the touch inclined surface on the touch platform pushes the first driving arm and the second driving arm, thereby realizing automatic opening and closing of the bottom door.

[0015] Furthermore, the inclined directions of the touch slopes of the touch platforms on the two longitudinal beams are opposite.

[0016] The touch slopes of the touch platforms on the two longitudinal beams of the utility model have opposite inclination directions. The touch slopes with opposite inclination directions can realize clockwise and counterclockwise rotation of the first driving arm and the second driving arm.

[0017] In some embodiments, a funnel is included, and a telescopic chute is set at the bottom of the funnel. The telescopic chute includes a fixed chute and a sliding chute. The top of the fixed chute is fixedly connected to the bottom of the funnel, and the sliding chute is slidably connected to the fixed chute, so that after the empty rail vehicle enters the loading range, the sliding chute can be placed on the vehicle body through the top door of the vehicle body for loading.

[0018] The utility model provides a sliding chute. When the empty rail vehicle enters the loading range, the sliding chute can be placed on the vehicle body through the top door of the vehicle body, thereby improving the automation of loading.

[0019] Furthermore, the two funnels are symmetrically arranged, the fixed chute is tilted and the distance between the two funnels is greater than the width of the vehicle body, so that after the aerial rail vehicle enters the range between the two telescopic chutes, the sliding chute can be tilted and overlapped at the open position of the top door of the vehicle body.

[0020] The utility model symmetrically arranges two funnels and tilts the fixed chute so that the two funnels can load materials into the vehicle body at the same time, which is beneficial to improving the loading efficiency.

[0021] Furthermore, an inner liner is provided in the fixed chute, the upper end of the inner liner is sealedly connected to the inner wall of the fixed chute, the sliding chute is inserted from the lower end of the inner liner into the area between the inner liner and the inner wall of the fixed chute, and a hydraulic cylinder is provided in the inner liner, and the hydraulic cylinder is used to drive the sliding chute to extend or retract.

[0022] The utility model arranges an inner liner in the fixed chute so that the sliding chute slides in the area between the inner liner and the inner wall of the fixed chute, thereby avoiding interference between the material and the sliding chute.

[0023] In some embodiments, it includes a buffer bin, a quantitative bin and a charging bin connected in sequence. A weighing device is set in the buffer bin, and the weighing device is used to weigh the material. The funnel is rotatably connected to the charging bin so that the funnel can swing during the loading process.

[0024] The utility model rotatably connects the funnel with the charging bin so that the funnel can swing during the charging process and all the materials in the funnel are loaded into the vehicle body. The swing of the funnel can be achieved by a hydraulic mechanism which can be fixed on the outer wall of the charging bin.

[0025] In a third aspect, the present invention provides an aerial rail transportation method, comprising:

[0026] Start the loading instruction, and the conveyor will load the material into the buffer bin. When the material in the buffer bin reaches the preset weight, the loading will stop, and the material in the buffer bin will enter the quantitative bin.

[0027] After the empty rail vehicle arrives at the designated loading position, the drive mechanism controls the top door to open, starts the unloading and loading instructions, and the quantitative bin unloads into the two funnels. The telescopic chute under the two funnels extends into the sliding chute under the action of the hydraulic cylinder. The sliding chute rests on the side beam on the top of the vehicle body and unloads. At the same time, the funnel swings left and right. After loading is completed, the drive mechanism controls the top door to close.

[0028] When the empty rail vehicle moves to the unloading area, the two longitudinal beams move to the position below the main shaft near the two ends of the main shaft respectively. The touch platform of one of the longitudinal beams moves along the longitudinal beam and pushes the second driving arm. The second driving arm drives the main shaft to rotate, so that the left connecting part, the middle connecting part and the right connecting part break through the mechanical dead point, thereby realizing the opening of the bottom door. When unloading is completed, the touch platform on the other longitudinal beam moves along the longitudinal beam and pushes the first driving arm. The first driving arm drives the main shaft to rotate in the opposite direction. The main shaft drives the middle connecting part and the left connecting part and the right connecting part to rotate, so that the bottom door is closed. At this time, the left connecting part, the middle connecting part and the right connecting part return to the mechanical dead point.

[0029] The beneficial effects of the utility model are as follows: the utility model matches material loading and unloading with air rail transportation, so that the loading and unloading of air rail vehicles can be automated, the loading and unloading time is reduced, and the material transportation efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a side view of the vehicle body of the present utility model;

[0031] Figure 2 This is the front view of the vehicle body of the present utility model;

[0032] Figure 3 This is a bottom view of the vehicle body of the present utility model;

[0033] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0034] Figure 5 This is a structural diagram of the bottom opening and closing mechanism of the utility model;

[0035] Figure 6 This is a schematic diagram of the structure of the utility model when the bottom door is closed;

[0036] Figure 7 This is a structural diagram of the utility model when the bottom door is open;

[0037] Figure 8 This is a diagram of the charging structure of the utility model;

[0038] Figure 9 This is a schematic structural diagram of the funnel and telescopic chute of the utility model;

[0039] Figure 10It is a structural diagram of the collision mechanism of the utility model.

[0040] Reference numerals: vehicle body 1; bottom door 11; first bottom door 111; second bottom door 112; bracket 12; main shaft 13; middle connecting member 14; first driving arm 15; second driving arm 16; left connecting member 17; right connecting member 18; top door 19; driving mechanism 191;

[0041] Touch mechanism 2; longitudinal beam 21; transverse beam 22; touch platform 23; touch inclined surface 24;

[0042] Funnel 3; fixed chute 4; sliding chute 5; buffer bin 6; quantitative bin 7; charging bin 8. DETAILED DESCRIPTION

[0043] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0044] like Figure 1 、 3 As shown, the utility model provides an air rail vehicle, comprising a vehicle body 1, a bottom door 11 arranged in pairs is provided at the bottom of the vehicle body 1, and two pairs of bottom doors 11 are provided. Figure 4 、 5 As shown, each pair of bottom doors 11 includes a first bottom door 111 and a second bottom door 112 arranged symmetrically. The first bottom door 111 is hinged to the vehicle body 1 at one end close to the second bottom door 112, and the second bottom door 112 is hinged to the vehicle body 1 at one end close to the first bottom door 111. Figure 5 In the embodiment, the top ends of the first bottom door 111 and the second bottom door 112 are hinged to the vehicle body 1, and a bottom opening and closing mechanism is arranged between the first bottom door 111 and the second bottom door 112. The bottom opening and closing mechanism includes a bracket 12 and a main shaft 13. The bracket 12 is connected to the bottom of the vehicle body 1 by welding. The main shaft 13 is rotatably arranged on the bracket 12 through a bearing. A driving arm and a middle connecting member 14 are fixedly arranged on the main shaft 13. The two ends of the middle connecting member 14 are respectively hinged with a left connecting member 17 and a right connecting member 18. The end of the left connecting member 17 away from the middle connecting member 14 is hinged to the first bottom door 111, and the end of the right connecting member 18 away from the middle connecting member 14 is hinged to the second bottom door 112. When the first bottom door 111 and the second bottom door 112 are closed, the left connecting member 17, the middle connecting member 14 and the right connecting member 18 are collinear to form a mechanical dead point. The driving arm is used to drive the main shaft 13 to rotate and break through the mechanical dead point.

[0045] It is understandable that when the first bottom door 111 and the second bottom door 112 are closed, Figure 5In the shown state, the force applied by the first bottom door 111 to the left connecting member 17 passes through the rotation point of the middle connecting member 14, and the rotation point of the middle connecting member 14 is located on the axis of the main shaft 13. The force applied by the second bottom door 112 to the right connecting member 18 also passes through the rotation point of the middle connecting member 14. At this time, the structure forms a mechanical dead point. The bottom door 11 cannot be opened under the action of gravity and the gravity of the material. When external force acts on the driving arm, the main shaft 13 rotates to break through the mechanical dead point, and the first bottom door 111 and the second bottom door 112 are opened at the same time, which improves the opening and closing efficiency and can ensure the stability of the bottom door 11 after closing.

[0046] In some embodiments, the driving arm includes a first driving arm 15 and a second driving arm 16 , which are centrally symmetrically disposed at both ends of the main shaft 13 . Furthermore, the length of the main shaft 13 is greater than the width of the bottom door 11 .

[0047] The present invention provides a centrally symmetrical first drive arm 15 and second drive arm 16. When the first drive arm 15 rotates upward counterclockwise to open the two bottom doors 11, the second drive arm 16 rotates downward counterclockwise, facilitating the subsequent clockwise rotation of the second drive arm 16 to close the bottom doors 11. Furthermore, the first and second drive arms 15, 16 are arranged at opposite ends of the main shaft 13 to avoid affecting material unloading.

[0048] Furthermore, a roller is rotatably provided at the end of the driving arm.

[0049] The utility model provides a roller on the driving arm, and the roller drives the driving arm to rotate, thereby reducing the friction between the contact inclined surface 24 of the contact platform 23 and the driving arm, and reducing the required driving force.

[0050] In some embodiments, as Figure 2 As shown, two top doors 19 are provided on the top of the vehicle body 1, and the two top doors 19 are symmetrically arranged along the axis of the vehicle body 1. Slide rails are provided at both ends of the vehicle body 1 along the axial direction, and the slide rails are perpendicular to the axial direction of the vehicle body 1. The top doors 19 are slidably connected to the vehicle body 1 along the axial direction perpendicular to the axial direction of the vehicle body 1. A driving mechanism 191 is provided between the two top doors 19, and the driving mechanism 191 is used to drive the top doors 19 to open. The driving mechanism 191 can be a cylinder.

[0051] The utility model provides a top door 19 by sliding on the top of the vehicle body 1 so that the top door 19 can be opened automatically, thereby improving loading efficiency.

[0052] Based on the above-mentioned empty rail vehicle, the present invention provides an empty rail transportation system, including a touch mechanism 2, the height of the touch mechanism 2 is lower than the bottom of the vehicle body 1, such as Figure 10As shown, the touch mechanism 2 includes two parallel longitudinal beams 21. Tracks are provided at both ends of the longitudinal beams 21, and the tracks are arranged perpendicular to the longitudinal beams 21. The longitudinal beams 21 are parallel to the axis of the vehicle body 1. A touch platform 23 is slidably provided on the longitudinal beams 21, and a touch slope 24 is provided on the upper end surface of the touch platform 23. The touch slopes 24 of the touch platforms 23 on the two longitudinal beams 21 are respectively configured to cooperate with the first drive arm 15 and the second drive arm 16 to achieve opening and closing of the bottom door 11. The movement of the longitudinal beams 21 and the touch platform 23 can be driven by a motor and utilizes a gear transmission. Specifically, racks are provided on the crossbeam 22 and the longitudinal beam 21, and gears are provided on the longitudinal beam 21 and the touch platform 23. The motor drives the gears to drive the gears on the longitudinal beam 21 and the touch platform 23 to move along the racks.

[0053] The utility model provides a track. When the empty rail vehicle moves to the unloading area, the longitudinal beam 21 can approach the driving arm of the empty rail vehicle along the track. A touch platform 23 is slidably provided on the longitudinal beam 21. The touch platform 23 can slide along the longitudinal beam 21, so that the touch inclined surface 24 on the touch platform 23 pushes the first driving arm 15 and the second driving arm 16, thereby realizing the automatic opening and closing of the bottom door 11.

[0054] Furthermore, the touch slopes 24 of the touch platforms 23 on the two longitudinal beams 21 are inclined in opposite directions. The touch slopes 24 with opposite inclination directions can realize the clockwise rotation and counterclockwise rotation of the first driving arm 15 and the second driving arm 16.

[0055] like Figure 6 As shown, when the empty rail vehicle travels to the unloading area, the two longitudinal beams 21 move to the position below the main shaft 13 near the two ends of the main shaft 13, and the touch platform 23 of one of the longitudinal beams 21 moves to the left along the longitudinal beam 21 to push the second driving arm 16, and the second driving arm 16 rotates clockwise, thereby driving the left connecting member 17, the middle connecting member 14, and the right connecting member 18 to break through the mechanical dead point and rotate. Under the action of the bottom door 11 and the gravity of the material, the bottom door 11 automatically opens completely, as shown in FIG. Figure 7 As shown, it is a fully opened state. At this time, the first driving arm 15 has rotated to a position close to the bottom, pushing the touch platform 23 of the second driving arm 16 to a position away from the vehicle body 1. The touch platform 23 of the other longitudinal beam 21 moves to the right along the longitudinal beam 21 to push the first driving arm 15. The first driving arm 15 rotates counterclockwise, thereby driving the left connecting member 17, the middle connecting member 14, and the right connecting member 18 to rotate until the left connecting member 17, the middle connecting member 14, and the right connecting member 18 rotate to a collinear state. At this time, the force applied by the first bottom door 111 to the left connecting member 17 passes through the rotation point of the middle connecting member 14, and the force applied by the second bottom door 112 to the right connecting member 18 also passes through the rotation point of the middle connecting member 14. At this time, the structure is again in the mechanical dead point position, and the bottom door 11 is closed.

[0056] In some embodiments, as Figure 9 As shown, it includes a funnel 3, a telescopic chute is set at the bottom of the funnel 3, and the telescopic chute includes a fixed chute 4 and a sliding chute 5. The top of the fixed chute 4 is fixedly connected to the bottom of the funnel 3, and the sliding chute 5 is slidably connected to the fixed chute 4, so that after the empty rail vehicle enters the loading range, the sliding chute 5 can be placed on the vehicle body 1 through the top door 19 of the vehicle body 1 for loading.

[0057] The utility model provides a sliding chute 5. When the empty rail vehicle enters the loading range, the sliding chute 5 can be placed on the vehicle body 1 through the top door 19 of the vehicle body 1, thereby improving the automation of loading.

[0058] Furthermore, two funnels 3 are arranged symmetrically, and the fixed chute 4 is arranged at an angle. The distance between the two funnels 3 is greater than the width of the vehicle body 1, so that after the empty rail vehicle enters the range between the two telescopic chutes, the sliding chute 5 can be tilted and overlapped at the open position of the top door 19 of the vehicle body 1.

[0059] The utility model symmetrically arranges two funnels 3 and tilts the fixed chute 4 so that the two funnels 3 can simultaneously load materials into the vehicle body 1, which is beneficial to improving the loading efficiency.

[0060] Furthermore, an inner liner is provided in the fixed chute 4, the upper end of the inner liner is sealedly connected to the inner wall of the fixed chute 4, and the sliding chute 5 is inserted from the lower end of the inner liner into the area between the inner liner and the inner wall of the fixed chute 4. A hydraulic cylinder is provided in the inner liner, and the hydraulic cylinder is used to drive the sliding chute 5 to extend or retract.

[0061] The utility model arranges an inner liner in the fixed chute 4 so that the sliding chute 5 slides in the area between the inner liner and the inner wall of the fixed chute 4 , thereby avoiding interference between the material and the sliding chute 5 .

[0062] In some embodiments, as Figure 10 As shown, the apparatus comprises a buffer bin 6, a quantitative bin 7, and a charging bin 8 connected in sequence. A weighing device is provided in the buffer bin 6 for weighing the material. The hopper 3 is rotatably connected to the charging bin 8 so that the hopper 3 can swing during the loading process. The swing of the hopper 3 can be driven by a reduction motor.

[0063] The utility model rotatably connects the funnel 3 with the charging bin 8 so that the funnel 3 can swing during the loading process to load all the materials in the funnel 3 into the vehicle body 1. The swing of the funnel 3 can be achieved by a hydraulic mechanism, which can be fixed to the outer wall of the charging bin 8.

[0064] Based on the above-mentioned sky rail transportation system, the present invention provides a sky rail transportation method, comprising:

[0065] Start the feeding instruction, and the conveyor feeds the material into the buffer bin 6. When the material in the buffer bin 6 reaches the preset weight, the feeding stops, and the material in the buffer bin 6 enters the quantitative bin 7;

[0066] After the empty rail vehicle arrives at the designated loading position, the driving mechanism 191 controls the top door 19 to open, starts the unloading and loading command, and the quantitative bin 7 unloads the material into the two funnels 3. The telescopic chute below the two funnels 3 extends the sliding chute 5 under the action of the hydraulic cylinder. The sliding chute 5 is placed on the side beam on the top of the vehicle body 1 to unload the material. At the same time, the funnel 3 swings left and right. After the loading is completed, the driving mechanism 191 controls the top door 19 to close.

[0067] When the empty rail vehicle moves to the unloading area, the two longitudinal beams 21 move to the position below the main shaft 13 near the two ends of the main shaft 13 respectively, and the touch platform 23 of one of the longitudinal beams 21 moves along the longitudinal beam 21 to push the second driving arm 16, and the second driving arm 16 drives the main shaft 13 to rotate, so that the left connecting member 17, the middle connecting member 14, and the right connecting member 18 break through the mechanical dead point, thereby realizing the opening of the bottom door 11. When unloading is completed, the touch platform 23 on the other longitudinal beam 21 moves along the longitudinal beam 21 to push the first driving arm 15, and the first driving arm 15 drives the main shaft 13 to rotate in the opposite direction. The main shaft 13 drives the middle connecting member 14 and the left connecting member 17 and the right connecting member 18 to rotate, so that the bottom door 11 is closed. At this time, the left connecting member 17, the middle connecting member 14, and the right connecting member 18 return to the mechanical dead point.

[0068] The utility model matches material loading and unloading with air rail transportation, so that the loading and unloading of air rail vehicles can be automated, the loading and unloading time is reduced, and the material transportation efficiency is improved.

[0069] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present application, and should all be included in the scope of protection of the present application.

Claims

1. An empty rail vehicle, characterized in that: The invention comprises a vehicle body (1), wherein the bottom of the vehicle body (1) is provided with bottom doors (11) arranged in pairs, and each pair of bottom doors (11) comprises a first bottom door (111) and a second bottom door (112) arranged symmetrically, wherein the first bottom door (111) is hinged to the vehicle body (1) at one end close to the second bottom door (112), and the second bottom door (112) is hinged to the vehicle body (1) at one end close to the first bottom door (111), and a bottom opening and closing mechanism is provided between the first bottom door (111) and the second bottom door (112), and the bottom opening and closing mechanism comprises a bracket (12) and a main shaft (13), wherein the bracket (12) is connected to the bottom of the vehicle body (1), and the main shaft (13) is rotatably provided on the bracket (12). A driving arm and a middle connecting member (14) are fixedly arranged on the main shaft (13), and the two ends of the middle connecting member (14) are respectively hinged with a left connecting member (17) and a right connecting member (18), and the end of the left connecting member (17) away from the middle connecting member (14) is hinged to the first bottom door (111), and the end of the right connecting member (18) away from the middle connecting member (14) is hinged to the second bottom door (112). When the first bottom door (111) and the second bottom door (112) are closed, the left connecting member (17), the middle connecting member (14) and the right connecting member (18) are collinear to form a mechanical dead point. The driving arm is used to drive the main shaft (13) to rotate and break through the mechanical dead point.

2. The empty rail vehicle according to claim 1, characterized in that: The driving arm comprises a first driving arm (15) and a second driving arm (16), wherein the first driving arm (15) and the second driving arm (16) are centrally symmetrically arranged at two ends of the main shaft (13).

3. The empty rail vehicle according to claim 2, characterized in that: A roller is rotatably arranged at the end of the driving arm.

4. The empty rail vehicle according to claim 1, characterized in that: Two top doors (19) are provided on the top of the vehicle body (1), and the two top doors (19) are symmetrically arranged along the axis of the vehicle body (1). The top doors (19) are slidably connected to the vehicle body (1) along an axial direction perpendicular to the vehicle body (1), and a driving mechanism (191) is provided between the two top doors (19), and the driving mechanism (191) is used to drive the top door (19) to open.

5. An empty rail transportation system for empty rail vehicles according to any one of claims 1 to 4, characterized in that: The invention comprises a touch mechanism (2), wherein the touch mechanism (2) comprises two longitudinal beams (21) arranged in parallel, tracks are arranged at both ends of the longitudinal beams (21), the tracks are arranged perpendicular to the longitudinal beams (21), the longitudinal beams (21) are parallel to the axis of the vehicle body (1), a touch platform (23) is slidably arranged on the longitudinal beams (21), a touch inclined surface (24) is arranged on the upper end surface of the touch platform (23), and the touch inclined surfaces (24) of the touch platforms (23) on the two longitudinal beams (21) are respectively used to cooperate with a first driving arm (15) and a second driving arm (16) to realize the opening and closing of the bottom door (11).

6. The sky rail transportation system according to claim 5, characterized in that: The inclination directions of the touch slopes (24) of the touch platforms (23) on the two longitudinal beams (21) are opposite.

7. The sky rail transportation system according to claim 5, characterized in that: The invention comprises a funnel (3), a telescopic chute is provided at the bottom of the funnel (3), the telescopic chute comprises a fixed chute (4) and a sliding chute (5), the top of the fixed chute (4) is fixedly connected to the bottom of the funnel (3), and the sliding chute (5) is slidably connected to the fixed chute (4), so that after the empty rail vehicle enters the loading range, the sliding chute (5) can be placed on the vehicle body (1) through the top door (19) of the vehicle body (1) for loading.

8. The sky rail transportation system according to claim 7, characterized in that: The two funnels (3) are symmetrically arranged, the fixed chute (4) is tiltedly arranged, and the distance between the two funnels (3) is greater than the width of the vehicle body (1), so that after the empty rail vehicle enters the range between the two telescopic chutes, the sliding chute (5) can be tilted and overlapped at the open position of the top door (19) of the vehicle body (1).

9. The sky rail transportation system according to claim 7, characterized in that: An inner liner is provided in the fixed chute (4), the upper end of the inner liner is sealedly connected to the inner wall of the fixed chute (4), the sliding chute (5) is inserted from the lower end of the inner liner into the area between the inner liner and the inner wall of the fixed chute (4), and a hydraulic cylinder is provided in the inner liner, and the hydraulic cylinder is used to drive the sliding chute (5) to extend or retract.

10. The sky rail transportation system according to claim 7, characterized in that: The invention comprises a buffer bin (6), a quantitative bin (7) and a charging bin (8) which are connected in sequence. A weighing device is provided in the buffer bin (6) for weighing materials. The funnel (3) is rotatably connected to the charging bin (8) so that the funnel (3) can swing during the charging process.

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