WO2024051081A1

WO2024051081A1 - Shuttle vehicle having semi-enclosed structure, and material transfer system using same

Info

Publication number: WO2024051081A1
Application number: PCT/CN2023/075466
Authority: WO
Inventors: 卢建华; 徐文兴; 谭嘉铭; 杨峰
Original assignee: 科达制造股份有限公司
Priority date: 2022-09-06
Filing date: 2023-02-10
Publication date: 2024-03-14
Also published as: CN218370074U

Abstract

A shuttle vehicle having a semi-enclosed structure, and a material transfer system using same. The shuttle vehicle comprises a vehicle body (1), a guide assembly (2) and a driving device (3), wherein the vehicle body (1) is movably connected to the guide assembly (2), and the driving device (3) is arranged between the vehicle body (1) and the guide assembly (2). The vehicle body (1) comprises first longitudinal beams (11), a retainer (12) and first tracks (14), wherein the retainer (12) is connected to the first longitudinal beams (11), and forms a semi-enclosed structure extending upwards from the bottoms of the first longitudinal beams (11); and the bottoms of the first tracks (14) close to the first longitudinal beams (11) are arranged on side walls of the first longitudinal beams (11) and are located within the semi-enclosed structure formed by the retainer (12) and the first longitudinal beams (11). The vehicle body (1) having the semi-enclosed structure is composed of a plurality of longitudinal beams and the retainer, such that a logistics trolley can stably pass through the vehicle body (1); and the vehicle body (1) formed by the "n"-shaped retainer (12) can protect the logistics trolley passing therethrough, thereby improving the passing safety of the logistics trolley and the bearing capacity of the shuttle vehicle. The material transfer system has low requirements for the ground, and there is no need to dig pits and grooves in the ground, thereby reducing the overall construction cost.

Description

A semi-enclosed structure shuttle car and a material transfer system using it

Technical field

This application relates to the field of rail shuttle equipment, specifically to a semi-enclosed structure shuttle and a material transfer system using it.

Background technique

The rail shuttle is a rail-guided vehicle that can be used for material transportation at outbound platforms, inbound platforms, various buffer stations, conveyors, elevators, robots and other facilities. In the automated ceramic tile production workshop, products need to be automatically transferred from one device to another. The transport vehicle is the tool for transportation. Currently, the flexible production model of the ceramic tile production line often needs to adjust the rail transport vehicle in order to meet production needs. The target track is that the rail transport vehicle can only run on one track and cannot run between multiple parallel tracks. It cannot meet the automated production needs of multiple processes coexisting, and the vertical gap between the tracks is too large, so the track needs to be placed The pits increase the cost and difficulty of making the factory foundation.

The existing patent application with publication number CN114408491A discloses a latent RGV shuttle, which includes a shuttle frame and a mounting base. It also provides a track device including a ground track and a latent RGV shuttle. The invention has the beneficial effects of enabling the transport vehicle to move to different target ground tracks, being suitable for flexible production modes, meeting production needs, and achieving the effect of convenient production. The shuttle car and the ground track can be constructed on the same datum plane, eliminating the need to dig a ferry tunnel at the construction site and reducing construction costs. The rail car uses the first track arranged on the beam to transport the material car and carry the load. The capacity is limited and no circumferential protection is provided for the tiles on the material trolley.

Contents of the invention

One of the purposes of this application is to provide a shuttle car with a semi-enclosed structure, which solves the problems of the small carrying capacity of the rail car and the incomplete protection of the logistics car by the shuttle car.

In order to achieve the above application purpose, the technical solutions adopted by this application are as follows:

A semi-enclosed shuttle bus includes a body, a guide assembly and a driving device. The body is movably connected to the guide assembly. The driving device is arranged between the body and the guide assembly. The body includes The first longitudinal beam, the retainer and the first track, the retainer is connected to the first longitudinal beam, the first longitudinal beam and the retainer form a semi-enclosed structure, the first track is close to the The bottom of the first longitudinal beam is arranged on the side wall of the first longitudinal beam and is located in the semi-enclosed structure.

Preferably, the vehicle body further includes guide grooves, which are provided on the side walls of the first rail near both ends of the first rail and are used to cover the guide groove and the second rail. The docking error makes it difficult for the logistics trolley to deflect when entering the vehicle body, thereby improving the accuracy of the logistics trolley entering the vehicle body.

Preferably, the first rail and the first longitudinal beam are integrated or the first rail is detachably connected to the first longitudinal beam, and different manufacturing materials are selected according to different loads. method can reduce manufacturing costs.

More preferably, the vehicle body further includes a second longitudinal beam, the cross section of the cage is in the shape of a "J", and the second longitudinal beam is arranged parallel to the first longitudinal beam on the side of the cage. On the outer side wall and/or on the top, the strength of the vehicle body can be strengthened and the protection ability of the logistics trolley passing through the vehicle body can be improved.

Further, the guide assembly includes a second track, an adjustment plate, an adjustment rod and a pad. The second track is arranged below the vehicle body, the pad is installed on the ground, and the adjustment plate is arranged on the ground. The bottom of the second track, the adjusting rod penetrates the adjusting plate and the backing plate, and the distance between the adjusting plate and the backing plate can be adjusted. The guide assembly can be suitable for use on uneven ground, reducing the installation effort. The above-mentioned body shuttle bus has the ground requirements, thereby reducing the installation and debugging costs and the construction cost of the site.

Preferably, the driving device includes a reduction motor, a rack, a gear and a running wheel. The rack is arranged along the length direction of the second track. The reduction motor drives the gear to rotate, and the gear is connected in rotation. On the vehicle body and meshing with the rack, the traveling wheel is rotationally connected to the vehicle body and can roll on the second track. The gear meshes with the rack for transmission, which improves the efficiency of the vehicle. The ferry has high carrying capacity, accurate movement and parking, and is not easily deflected by external forces after braking, thereby improving the stability of the docking of the first track and the third track.

Preferably, the second rail is connected to the power supply, and the driving device further includes a brush, one end of the brush is connected to the first longitudinal beam, and the other end is in contact with the running wheel for moving from The power is taken from the first rail to supply energy to the driving device, and the ready-made first rail is used for power supply, thereby reducing the use of cables.

Preferably, it also includes a positioning device, which includes a proximity sensor, a photoelectric switch and a pull-wire switch. The proximity sensor is arranged on both ends of the vehicle body, and the photoelectric switch is arranged on both side walls of the vehicle body. On the vehicle body, the pull-wire switches are arranged on both sides of the vehicle body along the length direction of the first longitudinal beam for positioning and docking of the vehicle body and the second track to prevent collisions between adjacent logistics trolleys causing mechanical damage. Damage and material damage, triple protection improves the safety of shuttle bus operation.

The second purpose of this application is to provide a material transfer system that solves the problems of poor site adaptability and poor installation flexibility of the original material rotation system.

A material transfer system includes a third track and the shuttle car of the semi-enclosed structure. The third track is arranged on the ground and is located on both sides of the shuttle car of the semi-enclosed structure. The shuttle car of the semi-enclosed structure Cars can be docked with the third rail respectively, and the first rail and the third rail are at the same level.

A material transfer system includes a plurality of third rails and a plurality of shuttle cars of the semi-encircled structure. The plurality of shuttle cars of the semi-encircled structure are arranged side by side into two groups. One of the two groups of shuttle cars of the semi-enclosed structure is can be docked with each other, the third rail is provided on both sides of the shuttle car of the semi-enclosed structure, the shuttle car of the semi-enclosed structure can be docked with the third rail, the first rail and the third rail can be docked with each other. The tracks are at the same level.

The beneficial effects of this application are:

(1) The shuttle bus adopts a semi-enclosed structure body. The semi-enclosed structure body is composed of multiple longitudinal beams and cages. Its first track is arranged along the length of the first longitudinal beam, allowing the logistics trolley to pass stably. , the body composed of a retaining frame can protect the passing shuttle car, improving the safety of the logistics trolley passing by. There is also a second longitudinal beam installed on it to increase the carrying capacity of the shuttle car and improve the material transfer efficiency. .

(2) The shuttle bus is equipped with a guide component. The track on the guide component can be height-adjusted according to the ground conditions in the site to ensure the stability of the shuttle bus operation and improve the adaptability to the terrain, thereby expanding the shuttle bus's adaptability. Scope of use.

(3) During the construction process of this material transfer system, there is no need to dig trenches on the site, and the flatness requirements of the site are low. Through the combination of shuttle buses, multi-process tile processing can be achieved, and it has strong site adaptability. The advantage of high layout flexibility.

Description of the drawings

Figure 1 is an isometric view of the semi-enclosed shuttle bus provided by this application;

Figure 2 is a side view of the semi-enclosed shuttle bus provided by this application;

Figure 3 is a partial view of part A in Figure 1;

Figure 4 is an installation structural diagram of the shuttle bus with a semi-enclosed structure provided by this application;

Figure 5 is a layout diagram of the material transfer system provided by this application;

Figure 6 is a structural diagram provided in Embodiment 2;

Figure 7 is a layout diagram of the material transfer system provided in Embodiment 2.

Reference signs:

1. Body; 11. First longitudinal beam; 12. Cage; 13. Second longitudinal beam; 14. First track; 15. Guide groove; 2. Guide component; 21. Second track; 22. Adjustment plate; 23. Adjustment rod; 24. Backing plate; 25. Positioning plate; 26. Insulation parts; 3. Driving device; 31. Reduction motor; 32. Rack ; 33. Bearing seat; 34. Gear; 35. Transmission shaft; 36. Brush; 37. Running wheel; 4. Positioning device; 41. Proximity sensor; 42. Photoelectric switch; 43. Pull wire switch; 44. Pull wire; 5 , the third track; 51, top plate; 52, top rod.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the application.

Embodiment 1

As shown in Figures 1 to 5, a semi-enclosed shuttle bus includes a body 1, a guide assembly 2 and a driving device 3. The body 1 is movably connected to the guide assembly 2, and the driving device 3 is arranged between the body 1 and the guide assembly 2. time, used to push the vehicle body 1 to slide on the guide assembly 2. The vehicle body 1 includes a first longitudinal beam 11, a cage 12 and a first track 14. The cage 12 is connected to the first longitudinal beam 11, and the cage 12 moves along the first longitudinal beam 11. The bottom of a longitudinal beam 11 forms a semi-enveloping structure upward, covering the first longitudinal beam 11 below. The first rail 14 is close to the bottom of the first longitudinal beam 11 and is provided on the side wall of the first longitudinal beam 11 and is in a position to maintain The semi-enclosed structure formed by the frame 12 and the first longitudinal beam 11 can protect the logistics trolley passing through the first track 14, protect the tiles on the logistics trolley from being collided with external objects, and prevent the tiles from falling and being damaged.

Preferably, the first rail 14 is a solid rail with a square cross-section, which has strong load-bearing capacity and strong wear resistance. Even if the surface is worn for a long time, it can still ensure the stability of the shuttle bus operation and good electrical conductivity.

Preferably, the first rail 14 and the first longitudinal beam 11 are integrated, extruded or cast by a mold, and have strong load-bearing capacity and are not easily damaged. The first rail 14 is detachably connected to the first longitudinal beam 11 , which are connected by bolts or welding to facilitate construction and installation on site.

Preferably, the vehicle body 1 further includes guide grooves 15 , which are provided on the side walls of the first rail 14 near both ends of the first rail 14 . The guide grooves 15 are wedge-shaped and extend toward the side walls of the first rail 14 . An opening is formed on the outside, and the outward end of the opening has a larger cross-section than the inward end, which is used to guide the logistics trolley to enter the vehicle body 1 accurately, and can cover the error in the alignment of the first track 14 and the third track 5 .

Preferably, the vehicle body 1 also includes a second longitudinal beam 13. The cross section of the cage 12 is in the shape of a "J" shape. Multiple cages 12 are installed on the second longitudinal beam 13 at equal intervals. A tunnel is formed above the second longitudinal beam 13 to protect the passage of the logistics trolley. The second longitudinal beam 13 is parallel to the first longitudinal beam 11 and is arranged on the outer side wall of the cage 12 The top and/or top are used to strengthen the strength of the semi-enclosed structure, reduce the gap between the semi-enclosed structures, and improve the protection ability of the logistics trolley.

Further, the guide assembly 2 includes a second rail 21, an adjustment plate 22, an adjustment rod 23 and a pad 24. The second rail 21 is provided below the vehicle body 1. The pad 24 is fixed and installed on the ground by expansion bolts. The adjustment plate 22 Set at the bottom of the second track 21, the adjusting rod 23 is a screw. The adjusting rod 23 penetrates the adjusting plate 22 and the backing plate 24. The adjusting rod 23 is equipped with a plurality of nuts. By adjusting the distance between the nuts, the adjusting plate 22 and the backing plate 24 are adjusted. The distance of the backing plate 24 can also improve the firmness of the installation of the second rail 21. During installation, the height of the second rail 21 from the ground can be adjusted to adapt to uneven ground, and at the same time, the upper end of the second rail 21 and The upper end of the third track 5 is facing upright to facilitate the balanced passage of the material trolley.

Preferably, the driving device 3 is also provided with a bearing seat 33 and a transmission shaft 35. The bearing seat 33 is fixed on the side wall of the first longitudinal beam 11. One end of the transmission shaft 35 is connected to the output end of the reduction motor 31 and passes through the bearing. The other end of the seat 33 is connected to the gear 34, and the running wheel 37 is connected to one side of the gear 34. Both ends of the vehicle body 1 are equipped with bearing seats 33 and transmission shafts 35, which are used to promote the shuttle car to move in a balanced manner. Driven by 35, the running wheel 37 rolls on the second track 21 to carry the load from the vehicle body 1. The gear 34 engages with the rack 32 to drive the shuttle bus to move accurately along the direction of the second track 21. When the reduction motor 31 When the static torque is maintained, the shuttle bus can stably rely on the second rail 21 to act as a brake.

Preferably, the guide assembly 2 also includes an insulating member 26. The insulating member 26 is disposed between the adjusting plate 22 and the backing plate 24. The insulating member 26 is made of high-strength plastic. The adjusting rod 23 penetrates the insulating member 26 to fix it in the adjusting position. The bottom of the plate 22 is fastened by bolts to prevent the current on the second track 21 from flowing to the ground, causing losses or causing harm to the human body.

Preferably, the guide assembly 2 also includes a positioning plate 25. The positioning plate 25 is "L" shaped. One end of the positioning plate 25 is bolted to the adjustment plate 22, and its adjacent and vertical side is connected to the side wall of the rack 32. On the other hand, the racks 32 are connected side by side along the direction of the second rail 21 to improve the stability and accuracy of the shuttle bus operation.

Preferably, the driving device 3 includes a reduction motor 31, a rack 32, a gear 34 and a running wheel 37. The rack 32 is arranged along the length direction of the second rail 21. The reduction motor 31 drives the gear 34 to rotate, and the gear 34 is rotatably connected to the vehicle body 1. and meshing with the rack 32. The running wheels 37 are rotatably connected to the vehicle body 1 and can roll on the second rail 21 to support the weight of the entire shuttle bus and also introduce the power on the second rail 21 to the driving device. Within 3.

Preferably, the second track 21 is connected to an external power supply, and the driving device 3 also includes a brush 36, one end of the brush 36 is connected to It is connected to the first longitudinal beam 11, and the other end is in contact with the running wheel 37. The brush 36 is electrically connected to the driving device 3, so that when the shuttle bus moves, the electric energy can be continuously passed through the second track 21, the running wheel 37 and the electric motor. The brush 36 is transmitted to the driving device 3 and supplies energy to the driving device 3 to realize the continuous operation of the shuttle bus. There is no need to install a large number of power storage or power supply devices on the shuttle bus, which simplifies the structure, reduces the difficulty of maintenance and improves the efficiency. service life.

Preferably, it also includes a positioning device 4. The positioning device 4 includes a proximity sensor 41 and a photoelectric switch 42. The proximity sensor 41 is provided at both ends of the vehicle body 1 and can be aligned with the first track 14 and the third track 5 on the shuttle bus. Send a signal to control the shuttle bus to stop in time to ensure the accuracy of the shuttle bus parking position. The photoelectric switch 42 is set on both sides of the first longitudinal beam 11, facing both sides of the vehicle body 1, and close to both ends of the vehicle body 1 , as insurance to prevent collision between two adjacent shuttle buses during operation, improving the safety of the material rotation system.

Preferably, the positioning device 4 also includes a pull-wire switch 43 and a pull-wire 44. The pull-wire switch 43 is arranged on the side wall of the first longitudinal beam 11. The pull-wire 44 is connected to the pull-wire switch 43 along the length direction of the first longitudinal beam 11. The pull-wire 44 It is located at the outermost side of the shuttle bus and surrounds the shuttle bus. When the shuttle bus is running, when the wiring 44 touches an object or the human body, the pull switch 43 will be triggered to cause the shuttle bus to stop immediately, thereby effectively ensuring the operation of the shuttle bus. safety and prevent damage to people or objects.

The operation process of the material transfer system is as follows:

The material trolley moves on the third track 5. When the material trolley is about to arrive at the end of the third track 5, the shuttle bus moves on the second track 21 driven by the driving device 3, and the proximity sensor 41 determines the third track. The position of the track 5 is stopped so that the first track 14 on the shuttle car is aligned with the third track 5. At this time, the driving device 3 remains stationary, the shuttle car stops stably on the second track 21, and the material trolley moves from the shuttle car to the second track 5. The body 1 passes through and enters the second track 21 on the other side of the shuttle car. When the material trolley passes through the shuttle bus, the shuttle bus moves again to build a bridge for the next material trolley, connecting the second track 21 on both sides. track 21, if the material trolley needs to move to the second track 21 that is not on the same straight line, the material trolley will stop moving immediately after moving to the shuttle bus, and the shuttle bus will move along the second track 21 driven by the driving device 3 direction, and can be aligned with different third rails 5. After the first rail 14 on the shuttle is docked with the corresponding third rail 5, the shuttle brakes to stop, and the material trolley then starts, starting from the first rail 14 moves to the third track 5 to complete the path conversion of the logistics trolley and realize the classified delivery of different types of materials.

Embodiment 2

As shown in Figures 6 and 7, the same features will not be described again with reference to Embodiment 1. The difference is that a material transfer system includes a plurality of third rails 5 and a plurality of shuttle cars with semi-enclosed structures. Semi-enclosed body structure The shuttle buses are arranged side by side into two groups, and the shuttle buses of the two groups of semi-encircled body structures can be docked with each other. The third track 5 is arranged on both sides of the shuttle buses of the semi-enclosed structure body. The shuttle cars of the semi-enclosed structure body can be connected to each other. Connected to the third rail 5, the first rail 14 and the third rail 5 are at the same level. The shuttle bus with a semi-enclosed structure can be used on flat ground and ground with pits, and has strong terrain adaptability.

Preferably, the third rail 5 is installed on the ground by a top plate 51 and a push rod 52. The top plate 51 is used to support the third rail 5. The push rod 52 can adjust the height of the third rail 5 from the ground, so that the height of the third rail 5 can be adjusted. It is easy to install and debug, has low requirements on ground flatness, and reduces the construction cost of the processing site.

The operation process of the material transfer system is as follows:

The material trolley moves on the third track 5. When the material trolley is about to arrive at the end of the third track 5, the first group of shuttle cars moves on the second track 21 driven by the driving device 3, which is judged by the proximity sensor 41. Stop at the position of the third rail 5 so that the first rail 14 on the first group of shuttle cars is aligned with the third rail 5. At this time, the driving device 3 remains motionless and the first group of shuttle cars stops stably on the second rail. 21, the material trolley moves to the integrated body 1 of the first group of shuttle cars and stops. At the same time, the second group of shuttle cars is driven by the driving device 3 to dock with the third track 5 on the other side. When the first group of shuttle cars After the car moves to face the second group of shuttle cars and brakes, the material trolley passes through the road bridged by the first group of shuttle cars and the second group of shuttle cars and enters the third track 5 on the other side to complete the classification of materials. Transshipment, this transshipment method can carry out more complex classification and transshipment of materials, improving the processing capacity and transshipment efficiency of complex materials.

Embodiment 3

The same features will not be described again with reference to Example 2. The difference is that a material transfer system includes a plurality of third rails 5 and a plurality of shuttle cars with semi-encircled structures. Multiple shuttle cars with semi-enclosed structures are arranged side by side. Multiple groups of shuttle cars with semi-enclosed body structures can be connected to each other. The third rail 5 is provided on both sides of the shuttle cars with semi-enclosed structure. The shuttle cars with semi-enclosed structure can be connected with the third rail. 5 docking, the upper end surface of the first rail 14 and the upper end surface of the third rail 5 are at the same level, which is suitable for transferring complex types of materials and products with complex processes. Multiple shuttle buses can also be docked on a single third rail. When the material trolley on track 5 is running intensively, it plays the role of material cache and can also be used with shuttle buses with different functions. For example, the shuttle bus has a turntable that can change the direction of the material trolley. The shuttle bus can be lifted and lowered to move the material trolley. Layering, three-dimensional transportation, etc. are implemented to realize material transportation with complex trajectories and paths to adapt to multi-step processing and further improve site utilization and material transfer efficiency.

Based on the disclosure and teaching of the above description, those skilled in the art to which this application belongs can also make changes and modifications to the above embodiments. Therefore, the present application is not limited to the specific embodiments disclosed and described above. Some modifications and changes should also fall within the protection scope of the claims of this application. In addition, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this application.

Claims

A semi-enclosed shuttle bus includes a body (1), a guide assembly (2) and a driving device (3). The body (1) is movably connected to the guide assembly (2), and the driving device (3) ) is provided between the vehicle body (1) and the guide assembly (2), characterized in that: the vehicle body (1) includes a first longitudinal beam (11), a cage (12) and a first track (14 ), the retainer (12) is connected to the first longitudinal beam (11), the first longitudinal beam (11) and the retainer (12) form a semi-enclosed structure, and the first track (11) 14) The bottom close to the first longitudinal beam (11) is arranged on the side wall of the first longitudinal beam (11) and is located in the semi-enclosed structure.
The semi-enclosed structure shuttle bus according to claim 1, characterized in that:

The vehicle body (1) also includes a guide groove (15), which is provided on the side wall of the first rail (14) near both ends of the first rail (14).
The semi-enclosed structure shuttle bus according to claim 2, characterized in that:

The first rail (14) and the first longitudinal beam (11) are integrated, or the first rail (14) is detachably connected to the first longitudinal beam (11).
The semi-enclosed structure shuttle bus according to claim 2, characterized in that:

The vehicle body (1) also includes a second longitudinal beam (13). The cross section of the cage (12) is in the shape of a "J". The second longitudinal beam (13) is connected with the first longitudinal beam (13). 11) Arranged in parallel on the outer wall and/or top of the cage (12).
The semi-enclosed structure shuttle bus according to claim 2, characterized in that:

The guide assembly (2) includes a second track (21), an adjustment plate (22), an adjustment rod (23) and a pad (24). The second track (21) is provided on the body (1). Below, the pad (24) is installed on the ground, the adjustment plate (22) is set at the bottom of the second track (21), and the adjustment rod (23) passes through the adjustment plate (22) and The pad (24) can adjust the distance between the adjusting plate (22) and the pad (24).
The semi-enclosed structure shuttle bus according to claim 5, characterized by:

The driving device (3) includes a reduction motor (31), a rack (32), a gear (34) and a running wheel (37). The rack (32) is along the length direction of the second track (21). It is set that the reduction motor (31) drives the gear (34) to rotate, the gear (34) is rotationally connected to the vehicle body (1) and meshes with the rack (32), and the running wheel (37) is rotatably connected to the vehicle body (1) and can roll on the second track (21).
The semi-enclosed structure shuttle bus according to claim 6, characterized by:

The second rail (21) is connected to the power supply, and the driving device (3) also includes a brush (36). One end of the brush (36) is connected to the first longitudinal beam (11), and the other end of the brush (36) is connected to the first longitudinal beam (11). Contact with the running wheel (37).
The semi-enclosed structure shuttle bus according to claim 1, characterized in that:

It also includes a positioning device (4). The positioning device (4) includes a proximity sensor (41), a photoelectric switch (42) and a pull-wire switch (43). The proximity sensor (41) is arranged on the vehicle body (1). On both ends, the photoelectric switch (42) is arranged on both side walls of the vehicle body (1), and the pull-wire switch (43) is arranged on the vehicle body along the length direction of the first longitudinal beam (11). (1) on both sides.
A material transfer system, including a third track (5) and a semi-enclosed structure shuttle car according to any one of claims 1 to 8, the third track (5) being set on the ground and located at On both sides of the shuttle bus with the semi-enclosed structure, the shuttle bus with the semi-enclosed structure can be docked with the third track (5) respectively. The first track (14) and the third track (5) are at the same level.
The material transfer system according to claim 9, characterized in that:

It includes a plurality of third tracks (5) and a plurality of shuttle cars with the semi-encircled structure. The plurality of shuttle cars with the semi-enclosed structure are arranged side by side into two groups, and the two groups of shuttle cars with the semi-enclosed structure can be separated by docking with each other, the third rail (5) is arranged on both sides of the shuttle car of the semi-enclosed structure, the shuttle car of the semi-enclosed structure can be docked with the third rail (5), the first rail (5) 14) At the same level as the third track (5).