Rail transfer ferry vehicle and rail transportation system applying same

Abstract

The utility model relates to the technical field of medical instruments, in particular to a rail transfer ferry vehicle and a rail transportation system applying the same. The rail transfer ferry vehicle comprises a rail transfer switching rail assembly, the rail transfer switching rail assembly comprises a conveying component extending in the first direction, a first driving mechanism driving the conveying component to rotate and a support supporting the conveying component and the first driving mechanism, and the first conveying face of the conveying component is flush with the second conveying face of the sample frame rail conveying mechanism; the guide assembly comprises a guide sliding rail extending in the second direction, a second driving mechanism for driving the rail changing and switching assembly to move in the second direction and a supporting frame for supporting the guide sliding rail, the support is in sliding connection with the guide sliding rail, and the second direction is perpendicular to the first direction; the rail transfer supporting plate penetrates through the conveying component and is arranged in the extending direction of the first conveying face of the conveying component, and the rail transfer supporting plate is fixedly connected with the supporting frame. The technical problem that the falling risk of the sample frame exists in an orbit transfer scheme in the prior art is solved.

Description

Technical Field

[0001] The present application relates to the field of medical device technology, and in particular to a track-changing shuttle vehicle and a rail transportation system using the same. Background Art

[0002] The track transport system of the sample rack usually includes multiple parallel transport tracks. In order to meet different test requirements of the test tubes on the sample rack, the sample rack needs to be switched between different transport tracks. Generally, an openable and closable blocking mechanism is set at the end of the multiple parallel transport tracks. When the sample rack is transported to the end of the transport track, it is blocked by the blocking mechanism and waits for the track switching command. However, if the blocking mechanism has a control abnormality and fails to block the sample rack in time when it is transported to the end, even if the transport mechanism stops, the sample rack can easily rush out of the transport track due to inertia, causing the sample rack to fall. Utility Model Content

[0003] The purpose of the present application is to provide a track-changing shuttle vehicle and a rail transportation system using the same, so as to solve the technical problem that the track-changing scheme in the prior art has the risk of sample racks falling.

[0004] In a first aspect, the present application provides a track-changing shuttle vehicle, which is used in conjunction with a sample rack track transport mechanism for track changing, and includes:

[0005] A track switching track assembly, comprising a transport component extending along a first direction, a first driving mechanism driving the transport component to rotate, and a bracket supporting the transport component and the first driving mechanism, wherein the first direction is consistent with the transport direction of the sample rack track transport mechanism, and the first transport surface of the transport component is flush with the second transport surface of the sample rack track transport mechanism;

[0006] A guide assembly, comprising a guide rail extending along a second direction, a second driving mechanism driving the track-changing and switching rail assembly to move along the second direction, and a support frame supporting the guide rail, wherein the bracket is slidably connected to the guide rail, and the second direction is perpendicular to the first direction;

[0007] A track-changing pallet passes through the transport component and is arranged along the extension direction of the first transport surface of the transport component, and the track-changing pallet is fixedly connected to the supporting frame.

[0008] Furthermore, the transport component is an annular conveyor belt, the first transport surface of the transport component is the upper surface of the annular conveyor belt, the annular conveyor belt also includes an inner upper surface of the belt opposite to the upper surface thereof, and the upper top surface of the track change pallet is in contact with the inner upper surface of the belt.

[0009] Furthermore, the bracket includes a first side plate and a second side plate extending along the first direction, and the first side plate and the second side plate are located on opposite sides of the endless conveyor belt.

[0010] Furthermore, a first strip-shaped through groove and a second strip-shaped through groove extending along the first direction are respectively provided at the same height position of the first side plate and the second side plate, and the track-changing support plate is arranged through the first strip-shaped through groove and the second strip-shaped through groove.

[0011] Furthermore, the track change switching track assembly also includes a first push plate and a second push plate extending along the first direction and having bottoms fixed to the top of the first side plate and the top of the second side plate respectively, and the tops of the first push plate and the second push plate are higher than the first transport surface.

[0012] Furthermore, at least two in-position photoelectric sensors are arranged on the first side plate and / or the second side plate, wherein the two in-position photoelectric sensors are arranged close to two ends of the first side plate or the second side plate respectively; or

[0013] At least two in-position photoelectric sensors are arranged on the first push plate and / or the second push plate, wherein the two in-position photoelectric sensors are respectively arranged close to two ends of the first push plate or the second push plate.

[0014] Furthermore, the track change switching track assembly also includes a first blocking mechanism fixedly connected to the first side plate or the second side plate, the first blocking mechanism is located at the tail end of the first side plate and the second side plate, the first blocking mechanism includes a first baffle, and the first baffle is higher than the upper surface of the circular conveyor belt.

[0015] Furthermore, the first driving mechanism includes a driving wheel and a driven wheel drivingly connected to the transport member, a tensioning wheel located between the driving wheel and the driven wheel, and a first driving motor drivingly connected to the driving wheel.

[0016] Furthermore, the second driving mechanism includes a slider slidably connected to the guide rail, a screw member fixedly connected to the slider, and a screw motor drivingly connected to the screw member, and the bracket is fixedly connected to the slider.

[0017] In a second aspect, the present application provides a rail transportation system, comprising the track-changing shuttle vehicle and the sample rack rail transportation mechanism as described in any of the aforementioned items, wherein the sample rack rail transportation mechanism comprises a plurality of transportation tracks arranged in parallel along a second direction, each of the transportation tracks extending along a first direction, and the plurality of transportation tracks comprises at least two forward transportation tracks and at least one reverse transportation track.

[0018] Compared with the prior art, the track-changing ferry car and the rail transport system using the same provided by the present application, the track-changing ferry car is used for switching tracks of sample racks, when the sample rack track switching operation is performed, the track-changing ferry car is located at the rear end side of the transport track of the sample rack track transport mechanism, the second driving mechanism of the track-changing ferry car drives the transport surface (i.e., the first transport surface) of the transport component (specifically, it can be an annular conveyor belt) of the track-changing ferry car to be flush with the transport surface (i.e., the second transport surface) of the transport track where the sample rack to be switched of the sample rack track transport mechanism is located, so as to receive the sample rack to be switched on the second transport surface; and a first transport surface that passes through the transport component and moves along the first transport component is provided on the track-changing ferry car. The track-changing pallet is arranged in the extension direction of the conveying surface. At this time, the track-changing pallet is also located together with the transport component on the rear end side of the transport track of the sample rack track transport mechanism, and is basically flush with the transport surface of each transport track. In this way, even if the blocking mechanism (i.e., the second blocking mechanism) for blocking the sample rack from rushing out, which is arranged at the rear end of the transport track of the sample rack track transport mechanism, is malfunctioning in control, the sample rack will rush out of the transport track due to inertia and will be caught by the first transport surface of the transport component and the upper top surface of the track-changing pallet flush with the transport surface of the transport track, and will not fall, thereby effectively preventing the sample rack from falling, ensuring the safety of the sample rack and the test tubes arranged on the sample rack, and ensuring the effectiveness of the samples in the test tubes. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 A schematic diagram of the structure of the track-changing ferry vehicle provided in an embodiment of the present application;

[0021] Figure 2 A schematic structural diagram of the track-changing ferry vehicle provided in an embodiment of the present application from another angle;

[0022] Figure 3 A schematic diagram of the structure of the sample rack track transport mechanism provided in an embodiment of the present application;

[0023] Figure 4 A schematic diagram of the structure of the rail transportation system provided in the embodiment of the present application;

[0024] Figure 5 This is a schematic diagram of the structure of the sample rack provided in an embodiment of the present application.

[0025] Reference numerals:

[0026] 1000-Railway transportation system;

[0027] 100-track-changing shuttle bus;

[0028] 10- Transport components;

[0029] 11- First transport surface;

[0030] 20-track change pallet;

[0031] 31- first side plate;

[0032] 32- second side plate;

[0033] 321- second strip-shaped through groove;

[0034] 33- first push plate;

[0035] 34- second push plate;

[0036] 35-first in-position photoelectric sensor;

[0037] 36- second in-position photoelectric sensor;

[0038] 40-guide rail;

[0039] 50-supporting bottom plate;

[0040] 60-support frame;

[0041] 61-support plate;

[0042] 62-first support frame;

[0043] 63- second supporting frame;

[0044] 71- first driving mechanism;

[0045] 711-driving wheel;

[0046] 712-driven wheel;

[0047] 713- tension pulley;

[0048] 714-first transmission belt;

[0049] 715-first drive motor;

[0050] 72- second driving mechanism;

[0051] 721-slider;

[0052] 722-screw member;

[0053] 723-screw motor;

[0054] 724-second transmission belt;

[0055] 80-first blocking mechanism;

[0056] 801- first baffle;

[0057] 200- sample rack track transport mechanism;

[0058] 201-first forward transport track;

[0059] 2011-Second transport surface;

[0060] 202-second forward transport track;

[0061] 203-first reverse transport track;

[0062] 205- second blocking mechanism;

[0063] 300-base plate;

[0064] 400-sample rack;

[0065] 401-test tube. DETAILED DESCRIPTION

[0066] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0067] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0068] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0069] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0070] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0071] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0072] In conjunction with the accompanying drawings, some embodiments of the present application are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0073] like Figures 1 to 5 As shown, the embodiment of the present application provides a track-changing shuttle vehicle 100 and a track transportation system 1000, wherein the track-changing shuttle vehicle 100 is used in conjunction with the sample rack track transportation mechanism 200 for track-changing. Figure 4 As shown, the rail transport system 1000 includes the rail transfer shuttle 100 and the sample rack rail transport mechanism 200, and the sample rack rail transport mechanism 200 includes a Figure 4 The plurality of transport tracks arranged in parallel in the second direction b shown in FIG. 1 and each transport track is arranged along Figure 4The first direction a shown in the figure is extended, and the multiple transport tracks include at least two forward transport tracks (specifically, the first forward transport track 201 and the second forward transport track 202) and at least one reverse transport track (specifically, the first reverse transport track 203). If the transport direction is switched, the sample rack 400 on the forward transport track (specifically, the first forward transport track 201 or the second forward transport track 202) can be switched to the reverse transport track (specifically, the first reverse transport track 203), which can be achieved with the assistance of the track-changing shuttle bus 100.

[0074] like Figures 1 to 5 As shown, the track-changing shuttle 100 provided in the embodiment of the present application includes a track-changing switching track assembly, a guide assembly and a track-changing support plate 20. The track-changing switching track assembly may specifically include a track-changing switching track assembly along the track as shown in FIG. Figure 1 The transport component 10 shown extends in the first direction a, the first driving mechanism 71 that drives the transport component 10 to rotate, and the bracket that supports the transport component 10 and the first driving mechanism 71, the bracket can be specifically composed of a supporting bottom plate 50, a first side plate 31 and a second side plate 32, the first direction a is consistent with the transport direction (i.e., the first direction a) of the aforementioned sample rack track transport mechanism 200, the first transport surface 11 of the transport component 10 is flush with the second transport surface 2011 of the aforementioned sample rack track transport mechanism 200, when the sample rack 400 is switching tracks, the first transport surface 11 of the transport component 10 is flush with the second transport surface 2011 of the transport track (such as the first forward transport track 201 or the second forward transport track 202) of the sample rack 400 to be switched of the sample rack track transport mechanism 200, and is used to receive the sample rack 400 to be switched, specifically, the first driving mechanism 71 can be driven in the forward direction to receive the sample rack 400 onto its first transport surface 11.

[0075] The guide assembly may include Figure 1The guide rail 40 extending in the second direction b shown in the figure, the second driving mechanism 72 driving the aforementioned track-changing switching track assembly to move along the second direction b, and the support frame 60 supporting the guide rail 40, the aforementioned bracket is slidably connected to the guide rail 40, and the specific support base plate 50 can be fixedly connected to the slider 721 slidably connected to the guide rail 40, the second direction b is perpendicular to the first direction a, and the guide assembly is used to drive the track-changing switching track assembly to move along the second direction b, so that the transport component 10 moves to the transport track after switching (such as the first reverse transport track) 203), and then the first driving mechanism 71 can specifically reversely drive the transport component 10 to transport the sample rack 400 on the first transport surface 11 to the transport surface of the docked switched transport track (such as the first reverse transport track 203) to achieve track switching; the aforementioned track-changing pallet 20 passes through the aforementioned transport component 10 and is arranged along the extension direction of the first transport surface 11 of the transport component 10, and the track-changing pallet 20 is fixedly supported on the supporting frame 60, so that the track-changing pallet 20 fixedly supported will not affect the movement of the transport component 10 along the second direction b.

[0076] Compared with the prior art, the track-changing ferry car 100 and the rail transport system 1000 using the same provided in the embodiment of the present application, the track-changing ferry car 100 is used for switching tracks of the sample rack 400. When the sample rack 400 is switching tracks, the track-changing ferry car 100 is located on the rear end side of the transport track of the sample rack rail transport mechanism 200, and the second driving mechanism 72 of the track-changing ferry car 100 drives the transport surface (i.e., the first transport surface 11) of the transport component 10 (specifically, it can be an annular conveyor belt) of the track-changing ferry car 100 to be flush with the transport surface (i.e., the second transport surface 2011) of the transport track where the sample rack 400 to be switched of the sample rack rail transport mechanism 200 is located, so as to receive the sample rack 400 to be switched on the second transport surface 2011; and a conveyor that passes through the transport component 10 and moves along the transport surface 2011 is provided on the track-changing ferry car 100. The track-changing pallet 20 is arranged in the extension direction of the first transport surface 11 of the transport component 10. At this time, the track-changing pallet 20 is also located together with the transport component 10 on the rear end side of the transport track of the sample rack track transport mechanism 200, and is basically flush with the transport surface of each transport track. In this way, even if the blocking mechanism (i.e., the second blocking mechanism 205) for blocking the sample rack 400 from rushing out, which is arranged at the rear end of the transport track of the sample rack track transport mechanism 200, is malfunctioning in control, the sample rack 400 will rush out of the transport track due to inertia, and will be received by the first transport surface 11 of the transport component 10 and the upper top surface of the track-changing pallet 20 that is flush with the transport surface of the transport track, and will not fall, thereby effectively preventing the sample rack 400 from falling, ensuring the safety of the sample rack 400 and the test tube 401 arranged on the sample rack 400, and ensuring the effectiveness of the sample in the test tube 401.

[0077] A specific embodiment is as follows Figure 1 and Figure 2 As shown, the aforementioned transport component 10 can be specifically an annular conveyor belt, and the first transport surface 11 of the transport component 10 can be specifically the upper surface of the annular conveyor belt, and the annular conveyor belt also includes an inner upper surface opposite to its upper surface. Preferably, the upper top surface of the aforementioned track-changing pallet 20 is in contact with the inner upper surface of the annular conveyor belt, so that the upper top surface of the track-changing pallet 20 and the first transport surface 11 differ in height only by the thickness of the belt body of the conveyor belt, and the thickness is only equal to or less than 1 mm. Make the upper top surface of the track-changing pallet 20 as close to the first transport surface 11 as possible, and reduce the height difference as much as possible, further ensure that it is flush with the transport surface of the transport track where the sample rack 400 is located, reduce the height difference, further ensure that the sample rack 400 will not fall, and ensure its safety.

[0078] Furthermore, the aforementioned bracket includes a first side plate 31 and a second side plate 32 extending along a first direction a, and the first side plate 31 and the second side plate 32 are located on opposite sides of the aforementioned endless conveyor belt. The first side plate 31 and the second side plate 32 are respectively provided with a first strip through groove (not shown) and a second strip through groove 321 extending along the first direction a at the same height position, and the aforementioned track-changing pallet 20 is arranged through the first strip through groove and the second strip through groove 321. In this way, the track-changing pallet 20 fixedly supported and arranged can pass through the first strip through groove and the second strip through groove 321 on the first side plate 31 and the second side plate 32, so that the transport component 10 passes through the track-changing pallet 20 and moves along the second direction b without affecting each other.

[0079] Furthermore, the track switching track assembly may also include a first push plate 33 and a second push plate 34 extending along the first direction a and having their bottoms fixed to the top of the first side plate 31 and the top of the second side plate 32, respectively. The tops of the first push plate 33 and the second push plate 34 are higher than the first transport surface 11 of the transport member 10. On the one hand, the first push plate 33 and the second push plate 34 can block the sample rack 400 located on the first transport surface 11 to prevent the sample rack 400 from tipping over or falling over. On the other hand, when the transport member 10 moves along the route of the switching track in the second direction b under the drive of the second driving mechanism 72, the first push plate 33 and the second push plate 34 have the function of pushing the sample rack 400 to move synchronously. In order to achieve better pushing and anti-tip and anti-falling effects, the height of the tops of the first push plate 33 and the second push plate 34 above the first transport surface 11 of the transport member 10 may be greater than or equal to one third of the height of the sample rack 400 itself.

[0080] In order to detect whether the sample rack 400 is received and transported in place on the first transport surface 11 of the transport component 10 of the track transfer shuttle 100. An optional embodiment is that at least two in-place photoelectric sensors can be arranged on the aforementioned first side plate 31 and / or the second side plate 32, wherein the two in-place photoelectric sensors (specifically, the first in-place photoelectric sensor 35 and the second in-place photoelectric sensor 36) are arranged close to the two ends of the first side plate 31 or the second side plate 32 respectively. Another optional embodiment is that Figure 1 and Figure 2 As shown, at least two in-position photoelectric sensors are arranged on the aforementioned first push plate 33 and / or the second push plate 34, wherein the two in-position photoelectric sensors (specifically, the first in-position photoelectric sensor 35 and the second in-position photoelectric sensor 36) are arranged near the two ends of the first push plate 33 or the second push plate 34, respectively. The first in-position photoelectric sensor 35 is arranged closer to the tail end of the transport track of the sample rack track transport mechanism 200 than the second in-position photoelectric sensor 36. When receiving the sample rack 400, the first driving mechanism 71 is suspended after the second in-position photoelectric sensor 36 senses that the sample rack 400 is in position; when transporting (transporting out) the sample rack 400 on the first transport surface 11 to the transport surface of the switched transport track, the first driving mechanism 71 is suspended after the first in-position photoelectric sensor 35 senses that the sample rack 400 is in position.

[0081] Furthermore, the track switching track assembly further includes a first blocking mechanism 80 fixedly connected to the first side plate 31 or the second side plate 32. Figure 2 As shown, the first blocking mechanism 80 is located at the rear end of the aforementioned first side plate 31 and the aforementioned second side plate 32, and the first blocking mechanism 80 includes a first baffle 801, and the first baffle 801 is higher than the upper surface of the aforementioned endless conveyor belt. When the sample rack 400 is received and there is no need to switch the conveyor track, after the second in-position photoelectric sensor 36 senses that the sample rack 400 is in position, the first driving mechanism 71 pauses, and the first baffle 801 of the first blocking mechanism 80 blocks the sample rack 400 to prevent it from falling. When the next sample rack track conveyor 200 receives the sample rack 400, the first baffle 801 rotates downward, and the first driving mechanism 71 works to transport the sample rack 400 to the next sample rack track conveyor 200.

[0082] A preferred embodiment is as follows Figure 1 and Figure 2As shown, the aforementioned support frame 60 may specifically include a support plate 61, a first support frame 62 and a second support frame 63; the aforementioned track-changing pallet 20 is supported and fixedly connected to the support plate 61 by the first support frame 62, and the top and bottom ends of the first support frame 62 are respectively fixedly connected to the lower bottom surface of the track-changing pallet 20 and the upper surface of the support plate 61; the aforementioned guide rail 40 may also be fixedly connected to the support plate 61; the second support frame 63 is used to support the support plate 61, and the top and bottom ends of the second support frame 63 may be respectively fixedly connected to the lower bottom surface of the support plate 61 and a support foundation, which may specifically be a working platform, the ground, a base plate 300, etc.; and more specifically, the first support frame 62 and the second support frame 63 may specifically include a plurality of evenly arranged support columns.

[0083] A specific embodiment is as follows Figure 1 and Figure 2 As shown, the aforementioned first driving mechanism 71 may specifically include a driving wheel 711 and a driven wheel 712 that are transmission-connected to the aforementioned transport component 10, a tensioning wheel 713 located between the driving wheel 711 and the driven wheel 712, and a first driving motor 715 that is drivingly connected to the driving wheel 711. Specifically, the driving wheel 711 and the driven wheel 712 may be transmission-connected via a first transmission belt 714.

[0084] Another specific embodiment is, Figure 1 and Figure 2 As shown, the aforementioned second driving mechanism 72 may specifically include a slider 721 slidably connected to the aforementioned guide rail 40, a screw member 722 fixedly connected to the slider 721, and a screw motor 723 transmission connected to the screw member 722. Specifically, the screw member 722 and the screw motor 723 may be transmission connected via a second transmission belt 724; the aforementioned bracket (specifically may include a supporting base plate 50) may be fixedly connected to the slider 721.

[0085] An optional embodiment is that the track-changing shuttle vehicle 100 provided in the embodiment of the present application may also be provided with a first blocking mechanism 80 at the rear end of the aforementioned transport component 10 (the end away from the rear end of the transport track of the sample rack track transport mechanism 200) to block the sample rack 400 on the first transport surface to prevent it from falling.

[0086] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. 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 replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A track-changing ferry vehicle, used in conjunction with a sample rack track transport mechanism for track changing, characterized in that: include: A track switching track assembly, comprising a transport component extending along a first direction, a first driving mechanism driving the transport component to rotate, and a bracket supporting the transport component and the first driving mechanism, wherein the first direction is consistent with the transport direction of the sample rack track transport mechanism, and the first transport surface of the transport component is flush with the second transport surface of the sample rack track transport mechanism; A guide assembly, comprising a guide rail extending along a second direction, a second driving mechanism driving the track-changing and switching rail assembly to move along the second direction, and a support frame supporting the guide rail, wherein the bracket is slidably connected to the guide rail, and the second direction is perpendicular to the first direction; A track-changing pallet passes through the transport component and is arranged along the extension direction of the first transport surface of the transport component, and the track-changing pallet is fixedly connected to the supporting frame.

2. The track-changing ferry vehicle according to claim 1, characterized in that: The transport component is an annular transport belt, the first transport surface of the transport component is the upper surface of the annular transport belt, the annular transport belt also includes an inner upper surface opposite to the upper surface thereof, and the upper top surface of the track-changing pallet contacts the inner upper surface of the belt.

3. The track-changing ferry vehicle according to claim 2, characterized in that: The support includes a first side plate and a second side plate extending along the first direction, and the first side plate and the second side plate are located at opposite sides of the endless conveyor belt.

4. The track-changing ferry vehicle according to claim 3, characterized in that: A first strip through groove and a second strip through groove extending along the first direction are respectively provided at the same height position of the first side plate and the second side plate, and the track-changing support plate is arranged through the first strip through groove and the second strip through groove.

5. The track-changing ferry vehicle according to claim 3, characterized in that: The track-changing switching track assembly also includes a first push plate and a second push plate extending along the first direction and having bottoms fixed to the top of the first side plate and the top of the second side plate, respectively. The tops of the first push plate and the second push plate are higher than the first transport surface.

6. The track-changing ferry vehicle according to claim 5, characterized in that: At least two in-position photoelectric sensors are arranged on the first side plate and / or the second side plate, wherein the two in-position photoelectric sensors are arranged close to two ends of the first side plate or the second side plate respectively; or At least two in-position photoelectric sensors are arranged on the first push plate and / or the second push plate, wherein the two in-position photoelectric sensors are respectively arranged close to two ends of the first push plate or the second push plate.

7. The track-changing ferry vehicle according to claim 6, characterized in that: The track-changing switching track assembly also includes a first blocking mechanism fixedly connected to the first side plate or the second side plate, the first blocking mechanism is located at the tail end of the first side plate and the second side plate, the first blocking mechanism includes a first baffle, and the first baffle is higher than the upper surface of the endless conveyor belt.

8. The track-changing ferry vehicle according to claim 1, characterized in that: The first driving mechanism includes a driving wheel and a driven wheel drivingly connected to the transport member, a tensioning wheel located between the driving wheel and the driven wheel, and a first driving motor drivingly connected to the driving wheel.

9. The track-changing ferry vehicle according to claim 1, characterized in that: The second driving mechanism includes a slider slidably connected to the guide rail, a screw member fixedly connected to the slider, and a screw motor drivingly connected to the screw member, and the bracket is fixedly connected to the slider.

10. A rail transportation system, characterized in that: It comprises the track-changing shuttle vehicle and sample rack track transport mechanism as described in any one of claims 1 to 9, wherein the sample rack track transport mechanism comprises a plurality of transport tracks arranged in parallel along the second direction, each of the transport tracks extends along the first direction, and the plurality of transport tracks comprises at least two forward transport tracks and at least one reverse transport track.

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