Folding track structure

Abstract

The utility model discloses a folding track structure, which belongs to the technical field of tracks, solves the problem of unsmooth movement of a track car caused by easy sinking of track joints in the prior art, and adopts the technical scheme that the folding track structure mainly comprises a plurality of track components which are detachably connected; each track assembly comprises at least two track sections arranged in the same direction, the track sections form a track surface, every two adjacent track sections are rotationally connected through a connecting piece, so that the track surfaces of the two adjacent track sections can be unfolded oppositely or folded reversely, the two adjacent track sections are each provided with a first abutting surface, and the first abutting surfaces abut against the track surfaces of the two adjacent track sections. First stopping surfaces are arranged at the two ends of the connecting piece between every two adjacent track sections, and when the track surfaces of every two adjacent track sections are unfolded oppositely to be located on the same plane, the first abutting surfaces abut against the first stopping surfaces so as to stop the opposite unfolding angle of the first abutting surfaces and the first stopping surfaces from exceeding 180 degrees. According to the utility model, the rail is not easy to sink when being unfolded, so that the rail car moves more smoothly.

Description

Technical Field

[0001] The utility model relates to the technical field of tracks, in particular to a folding track structure. Background Art

[0002] Railcars are currently widely used on farms, mainly for transporting agricultural equipment and fruits and vegetables. As an essential module of railcars, the track presets the route of the railcar and determines the stability during driving. After the railcar completes its operation, the track actually hinders the farmers' other agricultural operations on the farm. For this reason, the existing track is set to be foldable and retractable. For example, the prior art invention patent CN118007477A discloses a lightweight, foldable, non-fixed flexible track. Adjacent tracks are connected by connecting columns and rotating columns, so that the adjacent tracks can be rotated more than 180 degrees in the forward and reverse directions, and the track can be folded after disassembly. However, when the track is unfolded, when the railcar presses down the connecting column and the rotating column, the tracks on both sides rotate toward the connecting column and the rotating column and sink, so that the track surface is not on the same plane, which easily causes the railcar to be bumpy and stuck in movement. Utility Model Content

[0003] The purpose of the utility model is to provide a folding track structure, which solves the problem in the prior art that the track connection is prone to sinking, resulting in unsmooth movement of the track vehicle, and makes the track less likely to sink when unfolded, thereby making the track vehicle move more smoothly.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a folding track structure, comprising a plurality of track assemblies, wherein the plurality of track assemblies are detachably connected to each other, each of the track assemblies comprising at least two track segments arranged in the same direction, the track segments forming a track surface, and two adjacent track segments being rotatably connected by connecting members so that the track surfaces of the two adjacent track segments can be unfolded toward each other or folded in the opposite direction, the two adjacent track segments are each provided with a first abutting surface, and first stop surfaces are provided at both ends of the connecting member between the two adjacent track segments, and when the track surfaces of the two adjacent track segments are unfolded toward each other to be in the same plane, the first abutting surface and the first stop surface abut against each other to prevent the two from unfolding toward each other at an angle exceeding 180°.

[0005] After adopting the above technical solution, the utility model has the following advantages: First, the track structure is divided into multiple track components, and the multiple track components are detachably connected, so that the track components can be easily disassembled and reassembled as needed to adapt to different layout requirements, which is especially useful for farms that need to frequently change the track structure layout. Secondly, the connectors between the track segments not only support the rotation between the track segments, which is conducive to the folding and storage of the track components, but also limit the maximum unfolding angle of adjacent track segments to 180 degrees through the abutment of the first abutting surface and the first stop surface, which helps to maintain the overall stability and safety of the track component, and can ensure that the track surface can remain on the same plane even under pressure during use, so that the track segment is not easy to sink when unfolded, reducing the risk of bumps and jams of the rail car, thereby making the rail car move smoother, and can also limit the track component to one-way folding. After folding, a limit is formed between the track segments, and the track segments are not easy to loosen, which is convenient for transportation.

[0006] Furthermore, the track segment includes a supporting recess and a supporting protrusion, and the connecting member includes two connecting plates, which can be inserted into the supporting recess and rotatably connected to the track segment. The two connecting plates are connected to each other, and the first stop surface is provided on the connecting plate, and the first supporting surface is provided on the supporting recess.

[0007] By adopting the above-mentioned technical solution, the design of the supporting concave and convex parts enables the track segments to fit tightly in the unfolded state, so as to effectively prevent the track segments from being misplaced during use, thereby ensuring the overall consistency and reliability of the folding track structure.

[0008] Furthermore, the supporting protrusion of one of the two adjacent track segments is provided with a second supporting surface, and the supporting protrusion of the other of the two adjacent track segments is provided with a second stop surface. When the track surfaces of the two adjacent track segments are unfolded toward each other to be in the same plane, the second supporting surface and the second stop surface abut against each other to prevent the unfolding angle of the two from exceeding 180°.

[0009] By adopting the above-mentioned technical solution, the first abutting surface cooperates with the first stop surface, and the second abutting surface cooperates with the second stop surface, providing a double locking mechanism, thereby enhancing the stability and reliability of the track in the unfolded state. The double stop mechanism can serve as a redundant protection measure. Even if one stop fails, the other can prevent the track segment from over-expanding, thereby avoiding potential safety hazards.

[0010] Furthermore, a first avoidance surface is provided on the lower side of at least one of the first abutting surface and the first stop surface, and a second avoidance surface is provided on the lower side of at least one of the second abutting surface and the second stop surface.

[0011] With the aforementioned technical solution, the presence of the first avoidance surface and the second avoidance surface allows the track segment to have more room for movement when unfolding or folding, making it easier to unfold and fold.

[0012] Furthermore, the track segment includes a supporting recess and a supporting protrusion, the connecting member includes two connecting plates and an extension shaft located between the two connecting plates, the two connecting plates are connected to each other through the extension shaft, the connecting plate can be inserted into the supporting recess and rotatably connected to the track segment, the first stop surface is provided at the end of the connecting plate, and the first supporting surface is provided at the supporting recess.

[0013] With the above-mentioned technical solution, since the track segments can only be folded in one direction, by setting an extension shaft to change the length of the connecting piece, the track segments can be stacked parallel to each other when folded, which can greatly reduce the volume after folding and facilitate storage and transportation.

[0014] Furthermore, the supporting concave portion and the supporting convex portion of the two adjacent track segments are both provided with a first supporting surface, and both ends of the connecting piece and both ends of the extended shaft are both provided with a first stop surface.

[0015] By adopting the above-mentioned technical solution, the two first abutting surfaces cooperate with the two first stop surfaces to provide a double locking mechanism, thereby enhancing the stability and reliability of the track in the unfolded state. The double stop mechanism can serve as a redundant protection measure. Even if one stop fails, the other can prevent the track segment from over-expanding, thereby avoiding potential safety hazards.

[0016] Furthermore, a first avoidance surface is provided on the lower side of at least one of the first abutting surface and the first stopping surface.

[0017] With the aforementioned technical solution, the presence of the first avoidance surface allows the track segment to have more room for movement when unfolding or folding, making it easier to unfold and fold.

[0018] Furthermore, the first track segment in each of the track assemblies is provided with a connecting hole, and the last track segment is provided with a plug-in portion, and the plurality of track assemblies can be plug-connected via the plug-in portions and the connecting holes.

[0019] By adopting the above-mentioned technical solution, the design of the plug-in part and the connecting hole makes the connection between the track components very simple and quick, without the need for complicated tools or fasteners, and the assembly can be completed by simple plug-in. It is especially useful for environments where the layout of the folding track structure needs to be changed frequently.

[0020] Furthermore, the folding track structure also includes a strap, and the multiple track components can be fixed by the strap.

[0021] By adopting the above-mentioned technical solution, the straps can ensure that the track assembly remains stable in the folded state, making the entire track structure more compact and easy to carry. It can also minimize the accidental unfolding or loosening of the track assembly during transportation, reducing potential safety hazards. The straps can be adjusted according to actual needs to adapt to track assemblies of different sizes.

[0022] Furthermore, the folding track structure also includes a movable roller, which is detachably mounted on one of the track segments.

[0023] By adopting the above technical solution, the setting of the movable rollers enables the entire folding track structure to be easily moved on the ground after being stored, reducing the burden of carrying the folding track structure. The movable rollers can be installed or removed according to actual needs to reduce the impact on the use of the folding track structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below with reference to the accompanying drawings:

[0025] Figure 1 It is a schematic diagram of the folding track structure of the present utility model;

[0026] Figure 2 This is a cross-sectional view of the folding track structure of the present invention;

[0027] Figure 3 For this utility model Figure 2 A magnified view of the structure at center A;

[0028] Figure 4 For this utility model Figure 2 A magnified view of the structure at B in the middle;

[0029] Figure 5 This is a schematic diagram of the folding track structure of the present invention from another perspective;

[0030] Figure 6 For this utility model Figure 5 A magnified view of the structure at center C;

[0031] Figure 7 For this utility model Figure 5 A magnified view of the structure at D in the middle;

[0032] Figure 8 This is a schematic diagram of another perspective of the folding track structure of the present invention;

[0033] Figure 9 For this utility model Figure 8 Enlarged view of the structure at E in the middle;

[0034] Figure 10 For this utility model Figure 8A magnified view of the structure at F in the middle;

[0035] Figure 11 This is a schematic diagram of the structure of a single track assembly in the present invention when it is stored;

[0036] Figure 12 This is a schematic diagram of the structure of multiple track components in the present invention when they are stored;

[0037] Figure 13 This is a schematic structural diagram of the mobile roller in the utility model;

[0038] In the figure, 10, track segment; 100, straight rod; 101, track surface; 102, supporting recess; 103, supporting protrusion; 104, first supporting surface; 105, second supporting surface; 106, second stop surface; 107, connecting hole; 108, plug-in portion; 109, second avoidance surface; 110, rotating shaft; 120, cross bar; 130, connecting member; 131, extension shaft; 132, connecting piece; 133, first stop surface; 134, first avoidance surface; 20, strap; 30, moving roller; 310, support frame; 320, universal wheel; 330, groove; 340, limit rod; 350, handle. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0040] The terms "first," "second," "third," "fourth," and so on (if any) in the description and claims of the present invention and the drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential sequence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein.

[0041] It should be understood that in various embodiments of the present invention, the size of the serial numbers of the processes does not mean the order of execution. The order of execution of the processes should be determined by their functions and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0042] It should be understood that in the present invention, "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0043] It should be understood that in the present invention, "multiple" refers to two or more. "And / or" is only a description of the association relationship of related objects, indicating that three relationships can exist. For example, X and / or Y can represent three situations: X exists alone, X and Y exist at the same time, and Y exists alone. The character " / " generally indicates that the previous and next related objects are in an "or" relationship. "Including X, Y and Z", "Including X, Y, Z" means that X, Y, and Z are all included, "Including X, Y or Z" means that one of X, Y, and Z is included, and "Including X, Y and / or Z" means that any one, any two, or any three of X, Y, and Z are included.

[0044] The following specific embodiments are used to describe the technical solution of the present invention in detail. The following specific embodiments can be combined or replaced with each other according to actual conditions, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0045] like Figures 1 to 13 As shown, the utility model provides a folding track structure, which is mainly laid on agricultural sites. Rail vehicles run on the track to transport agricultural equipment and fruits and vegetables. The track structure includes multiple track components, and the multiple track components are detachably connected, so that the track structure can be easily disassembled and reassembled as needed to adapt to different layout requirements. It is especially useful for environments where the layout of the track structure needs to be changed frequently. For example, on a farm, the position and length of the track structure can be adjusted according to different stages of the crop growth cycle.

[0046] The two adjacent track segments 10 are rotatably connected by a connecting piece 130 so that the track surfaces 101 of the two adjacent track segments 10 can be unfolded toward each other or folded in the opposite direction. The two adjacent track segments 10 are each provided with a first abutting surface 104, and the two ends of the connecting piece 130 between the two adjacent track segments 10 are provided with a first stop surface 133. When the track surfaces 101 of the two adjacent track segments 10 are unfolded toward each other to be in the same plane, the first abutting surface 104 and the first stop surface 133 abut against each other to prevent the two from unfolding toward each other at an angle exceeding 180 degrees. This helps to maintain the overall stability and safety of the track assembly, and can ensure that the track surface 101 can remain in the same plane even under pressure during use, so that the track segment 10 is not easy to sink when unfolded, reducing the risk of bumping and jamming of the rail car, thereby making the rail car move more smoothly. The track assembly can also be limited to one-way folding. After folding, a limit is formed between the track segments 10, and the track segments 10 are not easy to loosen, which is convenient for transportation.

[0047] In order to achieve detachable connection between multiple track components, the first track segment 10 in each track component is provided with a connecting hole 107, and the last track segment 10 is provided with a plug-in portion 108. Multiple track components can be plugged in and connected through the plug-in portion 108 and the connecting hole 107. The design of the plug-in portion 108 and the connecting hole 107 makes the connection between the track components very simple and quick. No complicated tools or fasteners are required. Assembly can be completed by simple plug-in. This is particularly useful in environments where the layout of the folding track structure needs to be frequently changed.

[0048] To facilitate the unfolding and folding of the track segment 10, a first relief surface 134 is provided below the first stop surface 133. This provides greater freedom when unfolding and folding the track segment 10, making it easier to achieve the desired unfolding angle and facilitate folding. The first relief surface 134 is an inclined or curved surface extending downward from the first stop surface 133 and away from the track segment 10. The first abutting surface 104 and the first stop surface 133 are vertical planes.

[0049] In one embodiment, the track segment 10 includes a supporting recess 102 and a supporting protrusion 103, and the connecting member 130 includes two connecting pieces 132. The connecting pieces 132 can be inserted into the supporting recess 102 and are rotatably connected to the track segment 10. The two connecting pieces 132 are connected to each other, and a first stop surface 133 is provided on the connecting piece 132. The first supporting surface 104 is provided on the supporting recess 102. The design of the supporting recess 102 and the supporting protrusion 103 enables the track segment 10 to fit tightly in the unfolded state, so as to effectively prevent the track segment 10 from being dislocated during use, thereby ensuring the overall consistency and reliability of the folding track structure.

[0050] To further enhance the stability of the track in its deployed state, the abutting protrusion 103 of one of the two adjacent track segments 10 is provided with a second abutting surface 105, and the abutting protrusion 103 of the other of the two adjacent track segments 10 is provided with a second stop surface 106. When the track surfaces 101 of the two adjacent track segments 10 are deployed toward each other and are in the same plane, the second abutting surface 105 and the second stop surface 106 abut against each other to prevent the two from deploying toward each other at an angle exceeding 180°. The cooperation between the first abutting surface 104 and the first stop surface 133, and the cooperation between the second abutting surface 105 and the second stop surface 106, provide a double locking mechanism, enhancing the stability and reliability of the track in its deployed state. The double stop mechanism can serve as a redundant protection measure. Even if one stop fails, the other can prevent the track segment 10 from over-deployment, thereby avoiding potential safety hazards.

[0051] In order to further realize the expansion and folding of the track segment 10, a second avoidance surface 109 is provided on the lower side of the second abutting surface 105. The existence of the first avoidance surface 134 and the second avoidance surface 109 allows the track segment 10 to have more room for movement when expanding or folding, and can be expanded and folded more easily. The first avoidance surface 134 is an inclined surface or arc surface extending downward from the first stop surface 133 and away from the track segment 10. The second avoidance surface 109 is an inclined surface or arc surface extending downward from the second abutting surface 105 and away from the adjacent track segment 10. Among them, the second abutting surface 105 and the second stop surface 106 are vertical planes.

[0052] In another embodiment, the track segment 10 includes a supporting recess 102 and a supporting protrusion 103, and the connector 130 includes two connecting pieces 132 and an extension shaft 131 located between the two connecting pieces 132. The two connecting pieces 132 are connected to each other via the extension shaft 131. The connecting pieces 132 can be inserted into the supporting recess 102 and are rotatably connected to the track segment 10. A first stop surface 133 is provided at the end of the connecting piece 132, and a first supporting surface 104 is provided at the supporting recess 102. Since the track segment 10 can only be folded in one direction, by providing the extension shaft 131 to change the length of the connector 130, the track segments 10 can be stacked parallel to each other when folded, which can greatly reduce the volume after folding and facilitate storage and transportation.

[0053] To further enhance the stability of the track in its deployed state, the abutting recesses 102 and protrusions 103 of two adjacent track segments 10 are each provided with a first abutting surface 104. Both ends of the connecting piece 132 and the ends of the extended shaft 131 are provided with first stop surfaces 133. The two first abutting surfaces 104, in conjunction with the two first stop surfaces 133, provide a dual locking mechanism, enhancing the stability and reliability of the track in its deployed state. The dual stop mechanism serves as a redundant protection measure: even if one stop fails, the other can prevent the track segment 10 from over-deployment, thereby avoiding potential safety hazards.

[0054] In this embodiment, each track assembly includes three track segments 10 arranged in the same direction, and the lengths of the connectors 130 between two adjacent track segments 10 are different, so that the track surfaces 101 of the two adjacent track segments 10 can be arranged in parallel when folded in reverse. This can greatly reduce the volume after folding, making it easier to store and transport. For ease of distinction, the three track segments 10 include a track segment 10 with a connecting hole 107, a track segment 10 with a plug-in portion 108, and a track segment 10 located between the first track segment 10 and the third track segment 10. The length of the connector 130 on the track segment 10 with the connecting hole 107 is shorter than the length of the connector 130 on the track segment 10 with the plug-in portion 108. The connector 130 on the track segment 10 with the connecting hole 107 is composed of two connecting pieces 132, and the connector 130 on the track segment 10 with the plug-in portion 108 is composed of an extended shaft 131 and two connecting pieces 132.

[0055] To facilitate storage of the track assemblies, the folding track structure also includes straps 20, which can be used to secure multiple track assemblies. The straps 20 ensure that the track assemblies remain stable in the folded state, making the entire track structure more compact and easier to carry. They also minimize the risk of accidental unfolding or loosening of the track assemblies during transportation, reducing potential safety hazards. The straps 20 can be adjusted according to actual needs to accommodate track assemblies of different sizes.

[0056] Furthermore, the track structure also includes a movable roller 30, which can be detachably installed on one of the track sections 10. The setting of the movable roller 30 allows the entire folding track structure to be easily moved on the ground after being stored, reducing the burden of carrying the folding track structure. The movable roller 30 can be installed or removed according to actual needs to reduce the impact on the use of the folding track structure.

[0057] In the present invention, the track segment 10 includes a cross bar 120 and straight bars 100 located on both sides of the cross bar 120. Two adjacent track segments 10 are connected by a connecting piece 130 arranged between the straight bars 100. The first abutting surface 104, the second abutting surface 105 and the second stop surface 106 located on the track segment 10 mentioned in the above content are all arranged on the straight bars 100. The length of the track segment 10 mentioned in the above content is the length of the straight bars 100.

[0058] The connecting piece 132 can be rotatably connected to the straight rod 100 via the rotating shaft 110 .

[0059] like Figure 5 As shown, multiple track components are stored by the straps 20 . The straps 20 can surround the periphery of the multiple layers of crossbars 120 from top to bottom, or surround the periphery of each layer of crossbars 120 .

[0060] The movable roller 30 includes a support frame 310 and a universal wheel 320 arranged on the support frame 310. The support frame 310 is provided with a groove 330 for inserting the cross bar 120 and a connecting switch for opening and closing the groove 330. The groove 330 can be conveniently opened or closed through the connecting switch, so that the operator can easily install or remove the movable roller 30, which means that the movable roller 30 can be installed or removed according to actual needs, reducing the impact on the track structure during use.

[0061] The connection switch includes a limit rod 340 that is rotatably connected to the opening of the groove 330 and a handle 350 fixedly connected to the limit rod 340. Mounting holes are provided on both sides of the groove 330. The limit rod 340 has a first position that closes the groove 330 and a second position that opens the groove 330. When the limit rod 340 is in the first position, the limit rod 340 is simultaneously inserted into the mounting holes on both sides of the groove 330. When the limit rod 340 is in the second position, the limit rod 340 is removed from at least one mounting hole on one side of the groove 330. The mounting hole can be a threaded hole, and the limit rod 340 is provided with threads. The limit rod 340 and the mounting hole are threadedly connected. The limit rod 340 can be driven to switch between the first position and the second position by rotating the handle 350. Of course, in other embodiments, the mounting hole and the limit rod 340 can also be plugged together, and the limit rod 340 can be switched between the first position and the second position by pulling the handle 350.

[0062] It can be understood that in other embodiments, the connecting members may include an extension shaft and two connecting pieces. By adjusting the length of the extension shaft, the distance between two adjacent track segments can be changed so that the track segments are parallel to each other after being folded.

[0063] It is understandable that in other embodiments, a first avoidance surface is provided on the lower side of the first abutting surface, so that the track segment has more degrees of freedom when unfolding and folding, and can more easily achieve the desired unfolding angle while facilitating folding.

[0064] It is understandable that in other embodiments, a second avoidance surface is provided on the lower side of the second stop surface, so that the track segment has more freedom when unfolding and folding, and can more easily achieve the required unfolding angle while facilitating folding.

[0065] It is understandable that in other embodiments, each track assembly may also include two, four, or other number of track segments arranged in the same direction.

[0066] It is understandable that in other embodiments, the straps can also be used to bind the straight rods to make the track structure more compact.

[0067] In addition to the above-mentioned preferred embodiments, the present invention has other implementation methods. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection requested by the present invention.

Claims

1. A folding track structure, characterized in that: The invention comprises a plurality of track assemblies, wherein the plurality of track assemblies are detachably connected to each other, each of the track assemblies comprises at least two track segments (10) arranged in the same direction, the track segments (10) forming a track surface (101), and two adjacent track segments (10) are rotatably connected via a connecting member (130) so that the track surfaces (101) of the two adjacent track segments (10) can be unfolded toward each other or folded in reverse, the two adjacent track segments (10) are each provided with a first abutting surface (104), and first stop surfaces (133) are provided at both ends of the connecting member (130) between the two adjacent track segments (10), and when the track surfaces (101) of the two adjacent track segments (10) are unfolded toward each other to be in the same plane, the first abutting surface (104) and the first stop surface (133) abut against each other to prevent the two from unfolding toward each other at an angle exceeding 180°.

2. The folding track structure according to claim 1, characterized in that: The track segment (10) includes a supporting recess (102) and a supporting protrusion (103); the connecting member (130) includes two connecting pieces (132); the connecting pieces (132) can be inserted into the supporting recess (102) and are rotatably connected to the track segment (10); the two connecting pieces (132) are connected to each other; the first stop surface (133) is provided on the connecting piece (132); and the first supporting surface (104) is provided on the supporting recess (102).

3. The folding track structure according to claim 2, characterized in that: The abutting protrusion (103) of one of the two adjacent track segments (10) is provided with a second abutting surface (105), and the abutting protrusion (103) of the other of the two adjacent track segments (10) is provided with a second stop surface (106). When the track surfaces (101) of the two adjacent track segments (10) are unfolded toward each other and are in the same plane, the second abutting surface (105) and the second stop surface (106) abut against each other to prevent the unfolding angle of the two from exceeding 180 degrees.

4. The folding track structure according to claim 3, characterized in that: A first avoidance surface (134) is provided on the lower side of at least one of the first abutting surface (104) and the first stop surface (133), and a second avoidance surface (109) is provided on the lower side of at least one of the second abutting surface (105) and the second stop surface (106).

5. The folding track structure according to claim 1, characterized in that: The track segment (10) includes a supporting recess (102) and a supporting protrusion (103); the connecting member (130) includes two connecting pieces (132) and an extension shaft (131) located between the two connecting pieces (132); the two connecting pieces (132) are connected to each other via the extension shaft (131); the connecting piece (132) can be inserted into the supporting recess (102) and is rotatably connected to the track segment (10); the first stop surface (133) is provided at the end of the connecting piece (132); and the first supporting surface (104) is provided at the supporting recess (102).

6. The folding track structure according to claim 5, characterized in that: The supporting concave portion (102) and the supporting convex portion (103) of the two adjacent track segments (10) are both provided with a first supporting surface (104), and both ends of the connecting piece (132) and both ends of the extended shaft (131) are both provided with a first stop surface (133).

7. The folding track structure according to claim 1, characterized in that: A first avoidance surface (134) is provided on the lower side of at least one of the first abutting surface (104) and the first stop surface (133).

8. The folding track structure according to claim 1, characterized in that: The first track segment (10) in each track assembly is provided with a connection hole (107), and the last track segment (10) is provided with a plug-in portion (108). The plurality of track assemblies can be plug-connected via the plug-in portions (108) and the connection holes (107).

9. The folding track structure according to claim 1, characterized in that: The folding track structure further comprises a binding belt (20), and the plurality of track components can be fixed by the binding belt (20).

10. The folding track structure according to claim 1, characterized in that: The folding track structure further comprises a movable roller (30), and the movable roller (30) is detachably mounted on one of the track segments (10).

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