Folding device for protecting charging gun line of lifting and transverse moving stereo parking garage

Abstract

The invention discloses a folding device for protecting a charging gun line of a lifting and transverse moving three-dimensional parking garage. The device is internally provided with a groove used for laying the charging gun line, and each charging gun line comprises a fixed end and a follow-up end. Wherein the fixed end is directly or indirectly fixedly connected with a top layer garage steel framework or a middle layer transverse moving framework of the three-dimensional parking garage, and the follow-up end is directly or indirectly fixedly connected with the lifting vehicle carrying tray. The cross-layer drag chain can effectively prevent the cross-layer drag chain from being too long or drooping to extend into the transverse moving channel of the adjacent lower-layer parking area to collide with a frame or an object, and has the advantages of preventing the charging gun line from drooping and colliding, improving the equipment reliability and reducing the maintenance cost, so that safe and stable operation of the charging line of the stereo parking garage is guaranteed; the service life of the cable and the drag chain is obviously prolonged, the design occupies a small space, the installation and maintenance are simple and convenient, the shutdown maintenance frequency of the system is reduced, and the overall operation efficiency and reliability are improved.

Description

Technical Field

[0001] This application relates to the field of new energy vehicle charging and swapping, and particularly to a folding device for protecting charging gun cables in a lifting and traversing three-dimensional parking garage. Background Art

[0002] As one of the mechanical multi-layer parking garages, the lifting and traversing three-dimensional parking garage has been widely used with the rapid growth of the urban modernization process and the vehicle ownership. The three-dimensional parking garage can store and retrieve vehicles in multiple layers within a limited site, highly utilize the vertical space, and significantly alleviate the problem of insufficient ground parking spaces. The existing lifting and traversing system is controlled by a PLC, achieving a high level of automation and low-noise operation, and also having the advantages of energy conservation, environmental protection, and simple operation.

[0003] Currently, mechanical three-dimensional garages mainly include various forms such as lifting and traversing type, roadway stacking type, vertical lifting type, horizontal circulation type, multi-layer circulation type, and circular horizontal circulation type. Among them, the lifting and traversing three-dimensional parking garage combines two motion mechanisms of vertical lifting and horizontal traversing, and can flexibly adapt to different site heights and parking space requirements. It is one of the most common modular design solutions in the market.

[0004] Specifically, the existing lifting and traversing three-dimensional parking garage consists of three parts: the bottom parking area (only the traversing frame moves back and forth along the horizontal beam for vehicle entry and exit to make way), the middle parking area (both the lifting car tray moves up and down along the longitudinal guide rail and the traversing device moves left and right on the horizontal beam), and the top parking area (only the lifting car tray is used for up and down movement). Empty parking spaces need to be reserved on the bottom and middle layers for the vehicle lifting mechanism to exchange; the system is driven by sprockets, chains (or steel cables), etc., and the tray is lifted through the longitudinal guide rail and traversed on the horizontal beam, so that the vehicles on each layer can traverse to the parking space or the passage for entry and exit after lifting to the designated layer. The number of layers and columns can be freely set according to the site height, with flexible configuration, low failure rate, and fast entry and exit speed.

[0005] To meet the charging needs of new energy vehicles, the company has previously designed a charging device and a lifting and traversing three-dimensional garage (CN222346791U) applied to the lifting and traversing three-dimensional garage. The charging piles and the charging gun seats on each layer of trays are wired through components such as cable brackets, cable carriers, and guide grooves. After the cables are led out from the ground charging piles, they pass through the guide groove fixing frames and guide grooves, and are finally fixed to the charging gun seats on the lifting car trays after being wrapped by the cable carriers and cable brackets to ensure that the power supply lines move with the trays and are not exposed.

[0006] However, for an automated storage and retrieval system with only two floors, although the drag chain containing the cables will not sag, the highest point of the load on the lateral transfer frame on the ground floor may touch the cables on the second floor. Further, considering an automated storage and retrieval system with a high number of floors, when the drag chain (containing cables) is arranged across multiple floor heights, the excessively long chain links may cause the sagging drag chain to easily extend into the lateral transfer channels of adjacent floors, collide with and / or catch on the longitudinal beams of the lateral transfer frame, the highest point of the load it carries, the limit screws, or the photoelectric switches, etc., thereby causing damage to the cable insulation layer and jamming of the tray lateral transfer. The higher the number of floors of the automated storage and retrieval system, the greater the potential hazards, and in severe cases, it may even trigger safety failures.

[0007] If the circuit is damaged, such as the insulation layer being damaged due to scratching or extrusion, it will affect the power supply safety; if the equipment gets stuck and the drag chain gets stuck in the guide groove of the lateral transfer frame, it will cause the tray to be unable to complete the horizontal displacement normally. It may also require maintenance personnel to climb the rack manually to check and disassemble the drag chain, increasing the difficulty and safety risks of maintenance; and even when troubleshooting requires shutting down the machine, it will affect the entry and exit efficiency of the overall garage.

[0008] In view of the above problems, the existing technology urgently needs to be improved. Summary of the Invention

[0009] To solve at least one of the problems existing in the above-mentioned prior art, the present application provides a folding device for protecting the charging gun cable of a lifting and lateral transfer three-dimensional parking garage. The three-dimensional parking garage includes at least two parking areas. The bottom parking area is provided with a lateral transfer frame, the top parking area is provided with a lifting car tray, and the middle parking areas are provided with both a lateral transfer frame and a lifting car tray. The lifting car tray moves vertically up and down, and the lateral transfer frame only moves horizontally to make way for the vehicles on the upper layer to leave the warehouse. Among them, a charging gun seat is arranged on the lifting car tray, a charging gun is arranged on the charging gun seat, and after the charging gun cable is led from the charging pile on the ground to the lifting car tray on the corresponding floor, it is sequentially laid through the folding device and finally placed on the charging gun seat; among them, the folding device is made of rigid metal material, and its cross-section is in a U-shaped or C-shaped structure, and a groove for laying the charging gun cable is arranged inside.

[0010] Folding devices are arranged in the non-bottom parking areas. The folding devices are internally provided with grooves for laying the charging gun cables. The folding devices respectively include a fixed end and a follower end; among them, the fixed end is directly or indirectly fixedly connected to the top garage steel skeleton of the three-dimensional parking garage or the lateral transfer frame of the middle layer, and the follower end is directly or indirectly fixedly connected to the lifting car tray.

[0011] In the folding device for protecting the charging gun cable of the lifting and traversing multi-story parking garage as described above, optionally, the fixed end of the folding device is connected to the top garage steel frame of the multi-story parking garage or the traversing frame of the middle layer through a first transition unit, and the follower end is connected to the lifting car tray through a second transition unit.

[0012] In the folding device for protecting the charging gun cable of the lifting and traversing multi-story parking garage as described above, optionally, the first transition unit is a rigid connecting arm, and a groove is provided inside for laying the charging gun cable.

[0013] In the folding device for protecting the charging gun cable of the lifting and traversing multi-story parking garage as described above, optionally, the second transition unit is a longitudinal flexible drag chain, and the inside is used for laying the charging gun cable;

[0014] Wherein, as the follower end moves upward, the lowest point of the second transition unit in the folded and closed state of the folding device is always higher than the highest point of the traversing frame or the object carried thereon in the lower parking area.

[0015] In the folding device for protecting the charging gun cable of the lifting and traversing multi-story parking garage as described above, optionally, one end of the longitudinal flexible drag chain is connected to the follower end through a force transmission auxiliary unit, and the other end is fixedly connected to the lifting car tray; when the longitudinal flexible drag chain follows the lifting car tray and moves upward, an additional lifting force in the folding and contracting direction is provided to the folding device.

[0016] In the folding device for protecting the charging gun cable of the lifting and traversing multi-story parking garage as described above, optionally, the folding device includes at least two and an even number of connecting units, and the sum of the lengths of the multiple connecting units is greater than the height from the ground floor to the parking layer where it is located;

[0017] Each adjacent connecting unit is movably connected to each other, and every two connecting units form a folding layer. In the folding device for protecting the charging gun cable of the lifting and traversing multi-story parking garage as described above, optionally, each adjacent connecting unit is movably connected through a multi-axis synchronous hinge; wherein, the multi-axis synchronous hinge supports synchronous folding of a multi-stage folding mechanism, and a limit card slot is built-in to limit the maximum folding angle to 180° to prevent over-expansion.

[0018] In the folding device for protecting the charging gun cable of the lifting and traversing multi-story parking garage as described above, optionally, the cross-section of the connecting unit is a U-shaped or C-shaped structure for laying the charging gun cable.

[0019] In the folding device for protecting the charging gun cable of the lifting and traversing three-dimensional parking garage as described above, optionally, the fixed end is directly or indirectly fixed to the steel framework of the top garage of the three-dimensional parking garage or the middle section of the traversing frame of the middle layer.

[0020] In the folding device for protecting the charging gun cable of the lifting and traversing three-dimensional parking garage as described above, optionally, the fixed end is directly or indirectly fixed to the side of the steel framework of the top garage of the three-dimensional parking garage or the traversing frame of the middle layer.

[0021] The folding device for protecting the charging gun cable of the lifting and traversing three-dimensional parking garage provided by the present application can effectively prevent the cross-layer drag chain from being too long or sagging into the traversing passage of the adjacent lower parking area and colliding with the frame or the load, and has the advantages of preventing the charging gun cable from sagging and colliding, improving the reliability of the equipment, and reducing the maintenance cost, thereby ensuring the safe and stable operation of the charging line. The built-in groove and the multi-stage folding structure can reduce the repeated friction and pulling of the cable during the lifting process of the tray, significantly extend the service life of the cable and the drag chain, and the design occupies a small space and is easy to install and maintain. It not only reduces the shutdown and maintenance frequency of the system, but also improves the overall operation efficiency and reliability.

[0022] The following will further illustrate the concept, specific structure and technical effects of the present application with reference to the drawings, so as to fully understand the purpose, features and effects of the present application. Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0024] Figure 1 is a schematic structural diagram of an embodiment of a folding device for protecting the charging gun cable of a lifting and traversing three-dimensional parking garage of the present application;

[0025] Figure 2 is Figure 1 a schematic three-dimensional structural diagram of the folding device for protecting the charging gun cable of the lifting and traversing three-dimensional parking garage in ;

[0026] Figure 3 is Figure 1 a schematic top and side view of the structure of the folding device for protecting the charging gun cable of the lifting and traversing three-dimensional parking garage in ;

[0027] Figure 4It is a schematic structural diagram of another embodiment of a folding device for protecting a charging gun cable used in a lifting and traversing three-dimensional parking garage according to the present application;

[0028] Figure 5 It is Figure 1 and Figure 4 a schematic structural diagram of the folding device in;

[0029] Figure 6 It is a schematic structural diagram of a folding device with two-stage folding layers;

[0030] Figure 7 It is Figure 5 a schematic structural diagram in which the fixed end of the folding device in is located on the side of the intermediate layer traversing frame;

[0031] Figure 8 It is Figure 7 a schematic three-dimensional structural diagram of.

[0032] Reference numerals:

[0033] 1 - traversing frame;

[0034] 2 - lifting car tray; 21 - charging gun seat; 22 - charging gun cable;

[0035] 3 - folding device; 31 - fixed end; 32 - follower end;

[0036] 4 - first transition unit;

[0037] 5 - second transition unit. Detailed implementation manners

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, 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. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application.

[0039] It should be noted that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in this technology to understand and read, and are not used to limit the limited conditions under which the present application can be implemented. Therefore, they do not have a substantial technical meaning. Any modification of the structure, change of the proportional relationship, or adjustment of the size should still fall within the scope that can be covered by the technical content disclosed in the present application without affecting the effects that the present application can produce and the objectives that can be achieved.

[0040] In addition, the terms "first" and "second" are for descriptive purposes only, used to distinguish one entity or operation from another, and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features or any such actual relationship or order between these entities or operations. For any single technical feature described or implied in the embodiments mentioned herein, or any single technical feature shown or implied in the various drawings, this application still allows any combination or deletion between these technical features (or their equivalents) without any technical obstacles, and thus it should be considered that more embodiments according to this application are also within the scope of the present disclosure.

[0041] Terms such as "comprising" and "including" mean that in addition to the components directly and explicitly stated in the specification and claims, the technical solutions of the present invention do not exclude the situation of having other components that are not directly or explicitly stated.

[0042] It should also be noted that the orientation or positional relationship indicated by terms such as "upper", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present disclosure.

[0043] In addition, the term "and / or" in this document is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally represents an "or" relationship between the associated objects before and after.

[0044] In reality, a multi-story parking garage may include at least two parking areas. The bottom parking area is provided with a traversing frame 1, and the top parking area is provided with a lifting car tray 2. A multi-story parking garage with at least three parking areas will have an intermediate parking area, where both a traversing frame 1 and a lifting car tray 2 are provided. The lifting car tray 2 moves vertically up and down, and the traversing frame 1 only moves horizontally to make way for the vehicles on the upper layer to exit the garage.

[0045] It should be noted here that the schematic diagram shown in the drawings of this application only shows the architecture of the intermediate parking area, but does not limit the protection scope of this application.

[0046] As Figures 1 to 8 shown, a charging gun holder 21 is provided on the lifting car tray 2. A charging gun is provided on the charging gun holder 21. After the charging gun cable 22 is led from the charging pile on the ground to the lifting car tray 2 on the corresponding floor, it is laid through the folding device 3 in sequence and finally placed on the charging gun holder 21.

[0047] A folding device 3 is provided in the parking area that is not on the bottom layer (above the second layer). A groove is provided inside the folding device 3 for laying the charging gun cable 22. The folding device 3 can respectively include a fixed end 31 and a follower end 32.

[0048] The folding device 3 is a mechanical component that can fold or unfold through its own structure to adapt to the displacement of the lifting and loading tray 2. The fixed end 31 is the stationary part of the folding device 3 that is directly or indirectly fixedly connected to the top garage steel skeleton of the three-dimensional parking garage or the transverse movement frame 1 of the middle layer. The follower end 32 is the movable part that is directly or indirectly fixedly connected to the lifting and loading tray 2 and is linked with it.

[0049] In order to further improve the folding efficiency, one end of the longitudinal flexible drag chain can be connected to the follower end 32 through a force transmission auxiliary unit, and the other end is fixedly connected to the lifting and loading tray 2. When the longitudinal flexible drag chain moves upward with the lifting and loading tray 2, an additional lifting force in the folding and contraction direction is provided to the folding device 3. This additional lifting force cooperates with the self-folding mechanism of the folding device 3, enabling the folding device 3 to contract more tightly.

[0050] In an alternative embodiment, as Figure 1 , Figure 2 , Figure 4 , Figure 7 , Figure 8 shown, the fixed end 31 of the folding device 3 can be connected to the top garage steel skeleton of the three-dimensional parking garage or the transverse movement frame 1 of the middle layer through a first transition unit 4, and the follower end 32 is connected to the lifting and loading tray 2 through a second transition unit 5.

[0051] In other alternative embodiments, as Figure 4 shown, the first transition unit 4 can be a longitudinal flexible drag chain. However, this may mean that the drag chain also has a certain degree of mobility at the fixed end. Due to the mobility between the chain links, it is impossible to maintain a fixed folding angle or direction, resulting in inconsistent folding directions of different chain links and the overall structure leaning to one side. In addition, if the installation position of the fixed end is not stable enough, or the structural design of the drag chain itself is not sufficient to maintain symmetry during folding, eccentricity may also occur, causing the folding path to deviate from the expected during the folding process, resulting in asymmetry or position offset, and may further cause collisions or structural instability.

[0052] Therefore, in order to further stabilize the fixed end 31, the first transition unit 4 is designed as Figure 1 , Figure 2 , Figure 5 , Figure 7 , Figure 8The rigid connecting arm shown has a groove inside for laying the charging gun line 22. The rigid connecting arm can be made of metal material, with sufficient strength and stiffness to bear the weight of the folding device 3 and the stress during the movement process. The rigid connecting arm and the top floor garage steel skeleton or the intermediate floor traversing frame 1 can be fixedly connected by bolts, and the longitudinal flexible cable carrier and the lifting car tray 2 can be connected by buckles or bolts. This connection method not only ensures the stability of the connection but also facilitates disassembly and maintenance.

[0053] In this embodiment, the second transition unit 5 is a longitudinal flexible cable carrier, and its interior is used for laying the charging gun line 22. The longitudinal flexible cable carrier can be composed of multiple chain links, and each chain link is connected by a hinge, allowing free bending in the vertical direction.

[0054] During the folding process of the folding device 3, the connection point between the second transition unit 5 and the follower end 32 moves synchronously with the lifting car tray 2. At this time, the connection point between the first transition unit 4 and the fixed end 31 remains stationary, and the relative movement between the two (the fixed end 31 and the follower end 32) realizes the interference-free winding and unwinding of the charging gun line 22 through the deformation compensation of the transition unit and the unfolded and folded states of the folding device 3.

[0055] Among them, as the follower end 32 moves up in place, the lowest point of the second transition unit 5 in the folded and closed state of the folding device 3 is always higher than the highest point of the traversing frame 1 of the next lower parking area or the object it carries, so as to avoid the drooping of the cable carrier (containing the charging gun line 22) in the high-rise (above the third floor) parking area from affecting the traversing of the next lower floor or causing collisions, or, to avoid the potential risk of friction between the cable carrier in the second-floor parking area and the object carried by the traversing frame 1 on the ground floor.

[0056] In an alternative embodiment, the fixed end 31 can be directly or indirectly fixed to the middle position or the side of the top floor garage steel skeleton or the intermediate floor traversing frame 1 of the multi-story parking garage.

[0057] Preferably, a side design is adopted in the parking areas above the fourth floor, and a middle position design is adopted in the parking areas below the third floor.

[0058] The folding device 3 of this embodiment can include at least two and an even number of connecting units 33. The even-numbered connecting units are configured to form a symmetric folding structure, and the sum of the lengths of the multiple connecting units 33 is greater than the height from the ground floor to the parking floor where it is located. In addition, each adjacent connecting unit 33 is movably connected to each other, and every two connecting units 33 form a folding layer. Figure 5 What is shown is the situation of a folding layer. Figure 6The first folding device can be naturally unfolded to form a V-shaped suspended section as the follower end 32 moves downward, and the second folding device can be naturally unfolded to form a W-shaped suspended section as the follower end 32 moves downward, and so on.

[0059] Preferably, the folding device of the parking area located at the fourth floor or above can adopt a two-level or higher folding design.

[0060] Specifically, Figures 1 to 4 The figure shows the situation that the fixed end 31 of the folding device 3 is in the middle section of the middle layer of the transverse frame 1. Assuming that the length of a single connecting unit 33 is a and the width of the pallet is b, when the middle section position design is adopted, the requirement is 2a <b。

[0061] Figure 7 and Figure 8 The figure shows the case where the fixed end 31 of the folding device 3 is located at the side of the middle layer of the transverse frame 1. Assuming that the length of a single connecting unit 33 is c and the width of the pallet is b, when the side design is adopted, c is required to be <b。即偏侧设计的单个连接单元33的长度c可以比中段位置设计的单个连接单元33的长度a更长,这样能够在折叠装置3展开时更高效地覆盖从地面到达所在层的高度。

[0062] In this embodiment, each adjacent connection unit 33 can be movably connected by a multi-axis synchronous hinge, and the folding layer structure is gradually folded when the lifting vehicle pallet 2 rises, that is, when the follower end 32 rises with the pallet, the connection unit 33 is gradually folded toward the fixed end 31, and the folding layers are rotated by the hinge to eliminate motion interference. Among them, the multi-axis synchronous hinge supports the synchronous folding of the multi-level folding mechanism, and has a built-in limit card slot to limit the maximum folding angle to 180° to prevent excessive unfolding.

[0063] That is, the folding device 3 is made of rigid metal material. Specifically, the connection unit 33 can be made of aluminum alloy profile, with a U-shaped or C-shaped cross-section, and a groove for laying the charging gun line 22 is provided inside. The charging gun line 22 can be tied to the connection unit 33 by a cable tie, so that it is firmly placed and not easy to fall off. The contact area between the cable and the inner wall of the connection unit 33 is evenly distributed to reduce local friction.

[0064] The preferred specific embodiments of the present application have been described in detail above. Only several implementation manners of the present application are expressed, but it should not be construed as a limitation on the scope of the patent. The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification. It should be understood that those of ordinary skill in the art can make many modifications and variations according to the concept of the present application without creative labor. Therefore, without departing from the concept of the present application, all technical solutions that can be obtained by those skilled in the art in the technical field of the present application based on the concept of the present application through logical analysis, reasoning, or limited experiments on the basis of the prior art should be within the protection scope determined by the claims.

Claims

1. A folding device for protecting a charging gun line for lifting and transversely moving a three-dimensional parking garage, the three-dimensional parking garage comprising at least two parking areas, the bottom parking area is provided with a transversely moving frame (1), the top parking area is provided with a lifting vehicle loading tray (2), and the middle parking area is provided with both a transversely moving frame (1) and a lifting vehicle loading tray (2), the lifting vehicle loading tray (2) is displaced vertically, and the transversely moving frame (1) is only displaced horizontally to make way for vehicles on the upper layer to leave the garage, characterized in that: A charging gun seat (21) is arranged on the lifting vehicle tray (2), and a charging gun is arranged on the charging gun seat (21). After the charging gun line (22) is led from the charging pile on the ground to the lifting vehicle tray (2) on the same floor, it is laid through the folding device (3) in sequence and finally placed on the charging gun seat (21); wherein the folding device (3) is made of a rigid metal material, has a U-shaped or C-shaped cross-section, and is provided with a groove inside for laying the charging gun line (22); A folding device (3) is provided in a parking area other than the bottom floor. A groove is provided inside the folding device (3) for laying the charging gun line (22). The folding device (3) comprises a fixed end (31) and a follower end (32). The fixed end (31) is directly or indirectly fixedly connected to the top garage steel frame or the intermediate layer of the multi-story parking garage, and the follower end (32) is directly or indirectly fixedly connected to the lifting vehicle loading tray (2).

2. The folding device for protecting the charging gun line of the lifting and transverse moving three-dimensional parking garage according to claim 1 is characterized in that: The fixed end (31) of the folding device (3) is connected to the top garage steel frame or the middle layer transverse frame (1) of the three-dimensional parking garage through a first transition unit (4), and the follower end (32) is connected to the lifting vehicle loading tray (2) through a second transition unit (5).

3. The folding device for protecting the charging gun line of the lifting and transverse moving three-dimensional parking garage according to claim 2 is characterized in that: The first transition unit (4) is a rigid connecting arm, and a groove is provided inside thereof for laying the charging gun line (22).

4. The folding device for protecting the charging gun line for lifting and transversely moving three-dimensional parking garage according to claim 2 is characterized in that: The second transition unit (5) is a longitudinal flexible drag chain, the interior of which is used to lay the charging gun line (22); Wherein, as the follower end (32) moves upward, the lowest point of the second transition unit (5) in the folded and closed state of the folding device (3) is always higher than the highest point of the transverse moving frame (1) or its load in the next parking area.

5. The folding device for protecting the charging gun line of the lifting and transverse moving three-dimensional parking garage according to claim 4 is characterized in that: One end of the longitudinal flexible drag chain is connected to the follower end (32) via a force transmission auxiliary unit, and the other end is fixedly connected to the lifting vehicle loading tray (2); when the longitudinal flexible drag chain moves upward following the lifting vehicle loading tray (2), an additional lifting force in the folding and contracting direction is provided to the folding device (3).

6. The folding device for protecting the charging gun line for lifting and transversely moving three-dimensional parking garage according to claim 1 is characterized in that: The folding device (3) comprises at least two connecting units (33) of an even number, and the sum of the lengths of the plurality of connecting units (33) is greater than the height from the ground floor to the parking floor where they are located; Each adjacent connection unit (33) is movably connected to each other, and every two connection units (33) form a primary folding layer.

7. The folding device for protecting the charging gun line for lifting and transversely moving three-dimensional parking garage according to claim 6 is characterized in that: Each adjacent connection unit (33) is movably connected via a multi-axis synchronous hinge; wherein the multi-axis synchronous hinge supports synchronous folding of a multi-level folding mechanism, and has a built-in limit slot to limit the maximum folding angle to 180° to prevent excessive unfolding.

8. The folding device for protecting the charging gun wire for lifting and transversely moving three-dimensional parking garage according to claim 6 is characterized in that: The cross section of the connection unit (33) is a U-shaped or C-shaped structure, and is used for laying the charging gun line (22).

9. The folding device for protecting the charging gun line for lifting and transversely moving three-dimensional parking garage according to claim 1 is characterized in that: The fixed end (31) is directly or indirectly fixed to the middle section of the transverse frame (1) of the top garage steel frame or the middle layer of the three-dimensional parking garage.

10. The folding device for protecting the charging gun line for lifting and transversely moving three-dimensional parking garage according to claim 1 is characterized in that: The fixed end (31) is directly or indirectly fixed to the side of the transverse frame (1) of the top garage steel frame or the middle layer of the three-dimensional parking garage.

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