Connection structure and transport loading device

Abstract

The application discloses a connecting structure and a transportation loading device, and relates to the technical field of civil aviation. The connecting structure is used for connecting a guide rail assembly in the transportation loading device to a target position. The connecting structure comprises a door frame connecting piece, a guide rail connecting piece, a lock tongue and a driving piece. The door frame connecting piece is installed on the target position. The guide rail connecting piece comprises a rotating end and a free end arranged oppositely. The rotating end is rotatably connected to the top end of the guide rail assembly, so that the guide rail connecting piece can rotate between an unfolded position and a folded position. The lock tongue is movably arranged at the free end. The driving piece is connected to the lock tongue, so as to drive the lock tongue to extend or retract from the free end. When the guide rail connecting piece is located at the unfolded position and the lock tongue extends from the free end, the lock tongue is clamped or embedded on the door frame connecting piece. When the lock tongue retracts from the free end, the guide rail connecting piece is rotated to the folded position along a first direction, so that the guide rail connecting piece is stacked in the guide rail assembly.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of civil aviation, in particular to a connecting structure and a transport loading device. BACKGROUND

[0002] With the continuous development and progress of society, airplanes have entered the daily life of more and more people as a fast means of transportation. The airplane transport loading device is a special device for the personnel to get on and off the airplane. At present, the commonly used airplane transport loading device mainly adopts the form of a step. However, for patients, sickbeds and the like to get on and off the airplane, manual carrying or dispatching of a special airplane transport loading device is required.

[0003] The existing transport loading device generally comprises a driving system, a lifting platform assembly, a guide rail assembly and a connecting structure. The lifting platform assembly is used to carry and transport patients, sickbeds and the like to get on and off the airplane. The transport platform assembly is slidingly arranged on the guide rail assembly and can be lifted along the guide rail assembly under the driving of the driving system. In specific use, one end of the guide rail assembly is placed on a target plane (for example, the ground), and the other end is connected to a target position (for example, the vicinity of the door frame of the boarding door). After the use of the above transport loading device is completed, it needs to be stored in the airplane.

[0004] However, firstly, the existing connecting structure is detachably fixed on the guide rail assembly, which increases the storage size of the transport loading device. Moreover, each time the connecting structure needs to be assembled and connected with the guide rail assembly and the boarding door frame before use, and needs to be detached from the guide rail assembly and the boarding door frame for storage after use, which leads to a relatively complex process of using the transport loading device, poor convenience and low efficiency. Secondly, the existing lifting platform is a fixed structure. When the lifting platform is lifted to the cabin opening, the whole lifting platform is located outside the cabin, which is inconvenient and time-consuming and laborious to transfer into the cabin. Thirdly, the existing transport loading device has a large overall size, which needs to be assembled on site before use, leading to a large storage space requirement and a relatively complex assembly process.

[0005] Therefore, it is urgent to design a new connecting structure and an airplane transport loading device to solve the above problems. SUMMARY

[0006] The present application provides a connecting structure and a transport loading device to solve the problem of inconvenient use of the existing connecting structure.

[0007] To achieve the above purpose, the connecting structure provided by the present application is used to connect the guide rail assembly in the transport loading device to a target position, and comprises:

[0008] A door frame connecting piece is installed on the target position.

[0009] a guide rail connector, comprising a rotating end and a free end disposed opposite to each other, wherein the rotating end is rotatably connected to the top end of the guide rail assembly so as to rotate the guide rail connector between an extended position and a retracted position;

[0010] a lock tongue, the lock tongue being movably disposed at the free end;

[0011] A driving member is connected to the lock tongue to drive the lock tongue to extend or retract the free end, wherein

[0012] When the guide rail connector is in the expanded position and the lock tongue extends out of the free end, the lock tongue is engaged or embedded in the door frame connector; when the lock tongue retracts to the free end, the guide rail connector is rotated along the first direction to the retracted position, so that the guide rail connector is stacked in the guide rail assembly, thereby achieving the accommodation of the guide rail connector.

[0013] In some embodiments of the present application, the connection structure further includes:

[0014] A locking member is connected to the guide rail connector or the lock tongue. When the lock tongue extends out of the free end, the locking member can lock the lock tongue and the guide rail connector.

[0015] In some embodiments of the present application, the locking member is configured as an elastic member, which is provided at one end of the lock tongue toward the rotating end. When the lock tongue extends out of the free end, the elastic member provides a pre-tightening force to the lock tongue toward the free end.

[0016] In some embodiments of the present application, the guide rail connector also includes a main body connecting the free end and the rotating end, and a mounting hole is formed on the side of the main body close to the free end, and the mounting hole has a mounting end and an abutting end arranged opposite to each other. The lock tongue and the elastic member are both accommodated in the mounting hole through the mounting end, and the end of the elastic member facing away from the lock tongue abuts against the abutting end and is in a compressed state.

[0017] In some embodiments of the present application, a limiting groove is formed on the side wall of the main body, which is connected to the mounting hole and arranged opposite to the lock tongue. One end of the driving member extends into the limiting groove and is connected to the lock tongue. The limiting groove has a first limiting portion close to the free end, a second limiting portion close to the rotating end, and an intermediate connecting portion connecting the first limiting portion and the second limiting portion. The driving member can move between the first limiting portion and the second limiting portion. When the driving member is positioned at the first limiting portion, the lock tongue extends and is locked at the free end. When the driving member is positioned at the second limiting portion, the lock tongue retracts and is locked at the free end.

[0018] In some embodiments of the present application, the limiting groove is any one of a U-shaped limiting groove, an H-shaped limiting groove, a Π-shaped limiting groove, an M-shaped limiting groove, an inverted M-shaped limiting groove, or an N-shaped limiting groove.

[0019] In some embodiments of the present application, the first limiting part and the second limiting part are configured as clamping pieces protruding from the lower side wall of the limiting groove, the intermediate connecting part is configured as a connecting groove in the same direction of movement as the lock tongue, and the two ends of the limiting groove are formed with a receiving cavity between the two sides opposite to the two clamping pieces for accommodating the driving piece.

[0020] In some embodiments of the present application, the driving piece is a driving motor, and the connecting structure further comprises a worm gear connected with the driving motor, and a worm connected with the worm gear, the moving direction of the worm is consistent with the moving direction of the lock tongue, and the worm is fixedly connected with the lock tongue.

[0021] In some embodiments of the present application, the connecting structure further comprises:

[0022] A connecting rod, the lock tongue and the elastic piece are sleeved on the connecting rod, and the size of the mounting hole close to the rotating end is smaller than the size of the elastic piece and matches the size of the connecting rod.

[0023] In some embodiments of the present application, the connecting rod comprises a rod segment and a limiting segment, the size of the limiting segment is larger than the size of the rod segment, the lock tongue is slidingly installed in the mounting hole, a stepped hole is formed in the lock tongue, the large hole end of the stepped hole is farther away from the elastic piece than the small hole end, the size of the large hole end is larger than or equal to the size of the limiting segment, and the small hole end matches the rod segment.

[0024] In some embodiments of the present application, one side of the main body part close to the rotating end comprises a first connecting wall, a second connecting wall arranged opposite to the first connecting wall, and a side wall connecting the first connecting wall and the second connecting wall, wherein,

[0025] The rotating end is configured as a first pivot hole arranged on the first connecting wall and a second pivot hole arranged on the second connecting wall and corresponding to the first pivot hole, and the first pivot hole and the second pivot hole are rotatably connected with the top end of the guide rail assembly.

[0026] In some embodiments of the present application, the connecting structure further comprises:

[0027] A sliding block slidingly arranged on the side wall and fixedly connected with the end of the connecting rod close to the rotating end.

[0028] In some embodiments of the present application, the free end is configured as a clamping boss, the lock tongue extends out of the clamping boss, the door frame connector comprises a U-shaped accommodating groove, an opening of the U-shaped accommodating groove faces upward, and the clamping boss is embedded in the U-shaped accommodating groove.

[0029] In some embodiments of the present application, the door frame connector further comprises a positioning groove, the positioning groove is arranged in the U-shaped accommodating groove, and the positioning groove is aligned with the lock tongue when the clamping boss is embedded in the U-shaped accommodating groove.

[0030] Compared with the prior art, the connecting structure provided by the present application only needs to rotate the guide rail connector and the driving member to make the guide rail connector be located at the unfolded position (i.e., perpendicular to the extension direction of the guide rail assembly) and the lock tongue extend out of the free end, and the lock tongue is clamped or embedded on the door frame connector to ensure that the reliability of the connection between the connecting structure and the target position is high. After the use of the transportation loading device is completed, the lock tongue is retracted into the free end by rotating the driving member, i.e., the lock tongue is separated from the door frame connector, and then the guide rail connector is rotated in the first direction (counterclockwise) to the folded position to make the guide rail connector be stacked in the guide rail assembly. Thus, the connecting structure provided by the present application does not need to be frequently disassembled from the guide rail assembly and the target position during use, the use of the connecting structure provided by the present application is simple and convenient, and the connecting structure can be directly stacked in the guide rail assembly to ensure that the connecting structure is conveniently stored and does not affect the storage size of the transportation loading device.

[0031] On the other hand, the present application also provides a transportation loading device, which comprises:

[0032] a guide rail assembly, the guide rail assembly comprises a plurality of guide rail segments connected to each other, each guide rail segment comprises a pair of guide rails arranged vertically to the extension direction of the guide rail assembly and in parallel, the guide rails on the same side of the plurality of guide rail segments are arranged continuously along the extension direction, at least one guide rail in the guide rail segment at the top end of the guide rail assembly is provided with the connecting structure, the guide rail connector in the connecting structure is arranged on the outer side wall of the guide rail, and the outer side wall is the side wall facing away from each other of the pair of guide rails in the guide rail segment at the top end.

[0033] In some embodiments of the present application, the transportation loading device further comprises:

[0034] A mounting member is arranged on the outer sidewall and rotationally connected with the rotating end; wherein a third limiting part is arranged on the mounting member, and a fourth limiting part is arranged on the rotating end; when the rail connecting member is rotated to the unfolded position along the second direction, the third limiting part and the fourth limiting part are matched to prevent the rail connecting member from continuously rotating along the second direction when located at the unfolded position; wherein the first direction and the second direction are opposite directions.

[0035] In some embodiments of the present application, the transport loading device further comprises:

[0036] A lifting platform assembly comprises a support platform, a sliding chassis and a support rod set; the sliding chassis is matched with the rails to lift along the through channel formed by the rail segments; the support platform, the sliding chassis and the support rod set are jointly connected to form a triangular structure; the support platform and the support rod set are rotationally connected with the sliding chassis, so that the support platform and the support rod set can be folded on the rail assembly.

[0037] In some embodiments of the present application, the support platform comprises:

[0038] A mounting frame, the sliding chassis and the support rod set are connected on the mounting frame;

[0039] A movable plate is slidingly arranged on the mounting frame;

[0040] A detachment prevention member comprises a first detachment prevention part and a second detachment prevention part, which are matched to fix the transported object.

[0041] In some embodiments of the present application, the transport loading device further comprises:

[0042] An auxiliary support assembly is arranged in the lower area of the rail assembly; the auxiliary support assembly comprises a support rod and a limiting member; one end of the support rod abuts against the ground, and the other end is rotationally connected with the lower area of the rail assembly; one end of the limiting member is rotationally connected on the support rod, and the other end is connected on the lower area of the rail assembly; the connection position of the limiting member on the lower area is below the connection position of the support rod on the lower area, which is used to limit the opening angle of the support rod relative to the rail assembly.

[0043] In some embodiments of the present application, the transport loading device further comprises:

[0044] A driving assembly, comprising a winch, a sling, a connecting support assembly and a turning piece, the winch and the turning piece are both mounted on the sliding chassis, the connecting support assembly is arranged at the top end of the guide rail assembly, one end of the sling is connected with the connecting support assembly and the other end of the sling is connected with the winch through the turning piece.

[0045] Since the connecting structure in the transport loading device provided by the present application has the same structure as the above-mentioned connecting structure, the transport loading device can solve the technical problems solved by the above-mentioned connecting structure and achieve the technical effects intended by the above-mentioned connecting structure. BRIEF DESCRIPTION OF DRAWINGS

[0046] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0047] Figure 1 is a structural schematic diagram of the transport loading device in the embodiments of the present application;

[0048] Figure 2 is a structural schematic diagram of the door frame connecting piece in the connecting structure in the embodiments of the present application;

[0049] Figure 3 is a structural schematic diagram of the connecting part of the connecting structure and the guide rail assembly in the embodiments of the present application;

[0050] Figure 4 is a perspective view of the connecting structure in the embodiments of the present application;

[0051] Figure 5 is a structural schematic diagram of the connecting structure after the removal of the guide rail connecting piece in the embodiments of the present application, so as to clearly show the connection relationship between the components;

[0052] Figure 6 is a sectional view of the connecting structure in the embodiments of the present application;

[0053] Figure 7 is another perspective view of the connecting structure in the embodiments of the present application, so as to clearly show the structure of the limiting groove;

[0054] Figure 8 is a structural schematic diagram of the connecting part of the connecting structure and the guide rail assembly in another direction in the embodiments of the present application;

[0055] Figure 9 is a structural schematic diagram of the lifting platform assembly in the embodiments of the present application;

[0056] Figure 10is a structural schematic view of a connecting support assembly in the embodiment of the present application;

[0057] Figure 11 is a structural schematic view of a turning piece in the embodiment of the present application;

[0058] Figure 12 is a structural schematic view of a driving assembly in the embodiment of the present application.

[0059] The main reference signs in the drawings of the present application are explained as follows:

[0060] 1 - guide rail assembly; 11, 12, 13 - guide rail segment; 15 - roller; 16 - mounting piece; 161 - first U-shaped mounting piece; 162 - second U-shaped mounting piece; 17 - sliding block limiting groove; 18 - tensioning wheel;

[0061] 2 - connecting structure; 21 - door frame connecting piece; 211 - positioning groove; 22 - guide rail connecting piece; 220 - main body part; 221 - rotating end; 2211 - first connecting wall; 2212 - second connecting wall; 2213 - side wall; 222 - free end; 223 - mounting hole; 224 - limiting groove; 23 - lock tongue; 24 - driving piece; 25 - elastic piece; 26 - connecting rod; 261 - rod segment; 262 - limiting segment; 27 - sliding block;

[0062] 3 - lifting platform assembly; 31 - support platform; 311 - mounting rack; 312 - movable plate; 32 - sliding chassis; 33 - support rod group;

[0063] 4 - auxiliary support assembly; 41 - support rod; 42 - limiting piece;

[0064] 5 - driving assembly; 51 - winch; 52 - sling; 53 - turning piece; 531 - support column; 532 - first reinforcing rod; 533 - second reinforcing rod; 54 - turning piece; 55 - guide anti-falling piece; 56 - spring piece;

[0065] 100 - boarding door door frame. DETAILED DESCRIPTION

[0066] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0067] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship, and 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 particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0068] The terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0069] In the description of the present application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, it can be direct connection, or indirect connection through intermediate medium, it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0070] The present application provides a connecting structure and a transportation loading device, which are described in detail below. It should be noted that the description order of the following embodiments is not limited as the preferred order of the embodiments of the present application. In the following embodiments, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0071] Referring to Figures 1-4 The connecting structure provided by the present application is used to connect the guide rail assembly 1 in the transportation loading device to the target position (for example, the boarding door frame 100, see Figure 10The connecting structure 2 comprises a door frame connecting piece 21, a guide rail connecting piece 22, a lock tongue 23 and a driving piece 24. The door frame connecting piece 21 is installed on the target position. The guide rail connecting piece 22 comprises a rotating end 221 and a free end 222 oppositely arranged. The rotating end 221 is rotatably connected to the top end of the guide rail assembly 1, so that the guide rail connecting piece 22 rotates between the unfolded position and the folded position. The lock tongue 23 is movably arranged on the free end 222. The driving piece 24 is connected to the lock tongue 23, so as to drive the lock tongue 23 to extend or retract from the free end 222. When the guide rail connecting piece 22 is located at the unfolded position and the lock tongue 23 extends from the free end 222, the lock tongue 23 is clamped or embedded on the door frame connecting piece 21. When the lock tongue 23 retracts from the free end 222, the guide rail connecting piece 22 is rotated in the first direction to the folded position, so that the guide rail connecting piece 22 is stacked in the guide rail assembly 1.

[0072] Compared with the prior art, the connecting structure provided by the application only needs to rotate the guide rail connecting piece 22 and the driving piece 24, so that the guide rail connecting piece 22 is located at the unfolded position (i.e. perpendicular to the extension direction of the guide rail assembly 1) and the lock tongue 23 extends from the free end 222. The lock tongue 23 is clamped or embedded on the door frame connecting piece 21, which ensures that the reliability of the connection between the connecting structure and the target position is high. After the transportation and loading device is used, the lock tongue 23 is retracted from the free end 222 by rotating the driving piece 24, so that the lock tongue 23 is separated from the door frame connecting piece 21. Then, the guide rail connecting piece 22 is rotated in the first direction (i.e. counterclockwise in the figure) to the folded position, so that the connecting structure (except the door frame connecting piece 21) is stacked in the guide rail assembly 1. Therefore, the connecting structure provided by the application does not need to be frequently disassembled from the guide rail assembly 1 and the target position during use. The use of the connecting structure provided by the application is simple and convenient, and the connecting structure can be directly stacked in the guide rail assembly 1, which ensures that the connecting structure is conveniently stored and does not affect the storage size of the transportation and loading device. Figure 3

[0073] In order to ensure the connection reliability between the lock tongue 23 and the door frame connecting piece 21 after the lock tongue 23 extends from the free end 222, the connecting structure further comprises a locking piece connected to the guide rail connecting piece 22 or the lock tongue 23. When the lock tongue 23 extends from the free end 222, the locking piece can lock the lock tongue 23 and the guide rail connecting piece 22.

[0074] Referring to Figure 4 and Figure 5 ​The locking member is an elastic member 25, which is provided at the end of the lock tongue 23 facing the rotating end 221. When the lock tongue 23 extends out of the free end 222, the elastic member 25 can provide a pre-tightening force to the lock tongue 23 toward the free end 222, ensuring the prestressed force of the lock tongue 23 to extend and retract, so that the lock tongue 23 can stably extend out of the free end 222, further ensuring the connection reliability between the lock tongue 23 and the door frame connector 21. In some embodiments of the present application, the elastic member 25 is a spring.

[0075] More specifically, when the locking tongue 23 extends beyond the free end 222, the elastic member 25 is in a first compressed state, and the preload force is provided by the elastic force of the compressed spring. It will be appreciated that when the locking tongue 23 retracts toward the free end 222, the elastic member 25 is in a second compressed state, and the compressed length of the elastic member 25 in the second compressed state is shorter than the compressed length of the elastic member 25 in the first compressed state.

[0076] Alternatively, the locking member includes a first magnetic portion and a second magnetic portion, wherein the first magnetic portion is arranged on the lock tongue 23, and the second magnetic portion is arranged on the door frame connector 21, and the lock tongue 23 and the door frame connector 21 are attracted together by the first magnetic portion and the second magnetic portion.

[0077] Alternatively, the locking and fixing of the two are achieved by means of a snap-fit ​​protrusion and a snap-fit ​​groove.

[0078] In order to facilitate the installation of the lock tongue 23 and the elastic member 25 and reduce the volume of the above-mentioned connection structure, refer to Figure 6 The guide rail connector 22 further includes a main body 220 connecting the free end 222 and the rotating end 221. A mounting hole 223 penetrating the free end 222 is formed on one side of the main body 220 close to the free end 222. The mounting hole 223 has a mounting end and an abutting end that are opposite to each other (the abutting end is closer to the rotating end 221 than the mounting end). The lock tongue 23 and the elastic member 25 are both received in the mounting hole 223 through the mounting end. The end of the elastic member 25 facing away from the lock tongue 23 abuts against the abutting end and is in a compressed state. Figure 6 As shown, the abutting end is the right end of the mounting hole 223 , and the mounting end is the left end of the mounting hole 223 .

[0079] Based on the above embodiment, refer to Figure 6 and Figure 7The side wall of the main body 220 is formed with a limiting slot 224 which is in communication with the mounting hole 223 and is arranged opposite to the lock tongue 23. One end of the driving member 24 extends into the limiting slot 224 and is connected with the lock tongue 23 mounted in the mounting hole 223. The limiting slot 224 has a first limiting portion close to the free end 222, a second limiting portion close to the rotating end 221, and an intermediate connecting portion connecting the first limiting portion and the second limiting portion. The driving member 24 can move between the first limiting portion and the second limiting portion. When the driving member 24 is positioned in the first limiting portion, the lock tongue 23 extends out and is locked at the free end 222. When the driving member 24 is positioned in the second limiting portion, the lock tongue 23 retracts and is locked at the free end 222. Thus, the reliability and safety of the locking function of the lock tongue 23 are further improved.

[0080] More specifically, the limiting slot 224 is any one of a U-shaped limiting slot 224 (as shown in the figure), an H-shaped limiting slot, a Π-shaped limiting slot, an M-shaped limiting slot, an inverted M-shaped limiting slot or an N-shaped limiting slot. Figure 7 In some embodiments of the present application, the driving member 24 is a handle which is generally columnar. That is, the handle can be inserted into the mounting hole 223 through the limiting slot 224 and is connected with the lock tongue 23, or is threadedly connected with the lock tongue 23, as long as the two are fixedly assembled together. Thus, the handle can be manually operated to extend or retract the lock tongue 23 out of the free end 222, and the above scheme is easy to implement and has low cost.

[0081] Alternatively, the limiting slot 224 is a sliding groove which is opened along the movement direction of the lock tongue 23. The first limiting portion and the second limiting portion are both configured as clamping protrusions protruding from the lower side wall of the limiting slot 224. The intermediate connecting portion is configured as a connecting groove segment of the limiting slot 224 between the two clamping protrusions. The two ends of the limiting slot 224 are respectively formed with a receiving groove segment between the two sides of the two clamping protrusions which are opposite to each other, for accommodating the driving member 24. That is, the length of the limiting slot 224 is greater than the distance between the two clamping protrusions, and each receiving groove segment is greater than or equal to the size of the driving member 24. In specific use, when the driving member 24 moves to the position of the clamping protrusion, it is first lifted by the clamping protrusion and then falls into the limiting slot 224, and is clamped in the receiving groove segment by the clamping protrusion in the movement direction of the lock tongue 23, thereby realizing the locking function of the lock tongue 23.

[0082] In some other embodiments of the present application, the driving member 24 is a driving motor, and the connecting structure further comprises a worm gear connected with the driving motor, and a worm connected with the worm gear and moving in the same direction as the lock tongue 23 and fixedly connected with the lock tongue 23. Thus, the locking of the lock tongue 23 can be realized by the self-locking function of the worm gear and the worm.

[0083] With reference to the above Figures 4-6 , the connecting structure further comprises a connecting rod 26, the lock tongue 23 and the elastic member 25 are sleeved on the connecting rod 26, and the size of the mounting hole 223 near the rotating end 221 is smaller than the size of the elastic member 25 and matches the size of the connecting rod 26 (the rod segment 261 of the connecting rod 26). On the one hand, the connecting rod 26 can guide the deformation direction of the elastic member 25, so as to ensure that the extension or retraction of the lock tongue 23 is more reliable and stable. On the other hand, the connecting rod 26 can also provide a support force along the movement direction of the lock tongue 23, so as to ensure the stability and reliability of the whole connecting structure 2.

[0084] More specifically, with reference to the above Figure 6 , the connecting rod 26 comprises a rod segment 261 and a limiting segment 262, the size of the limiting segment 262 is larger than the size of the rod segment 261, the lock tongue 23 is in a cylindrical structure and is slidingly installed in the mounting hole 223, a stepped hole is formed in the lock tongue 23, the large hole end of the stepped hole is farther away from the elastic member 25 than the small hole end, the size of the large hole end is larger than or equal to the size of the limiting segment 262, and the small hole end matches the rod segment 26. Thus, the limiting between the connecting rod 26 and the lock tongue 23 in the axial direction of the connecting rod 26 can be realized by the limiting segment 262 of the connecting rod 26.

[0085] For example, the driving member 24 is connected with the lock tongue 23, so that when the connecting rod 26 is installed, the connecting rod 26 only needs to be inserted from the large hole end, and the rod segment of the connecting rod 26 is sequentially passed out from the small hole end and the end of the mounting hole 223 near the rotating end 221. The connecting rod 26 is axially positioned on the lock tongue 23 under the joint action of the limiting segment 262 and the elastic member 25.

[0086] With reference to the above Figure 4 and Figure 7The main body 220 includes a first connecting wall 2211, a second connecting wall 2212 opposite to the first connecting wall 2211, and a side wall 2213 connecting the first connecting wall 2211 and the second connecting wall 2212. The rotating end 221 is configured to include a first pivot hole on the first connecting wall 2211 and a second pivot hole on the second connecting wall 2212 corresponding to the first pivot hole. The first pivot hole and the second pivot hole are rotatably connected to the top end of the guide rail assembly 1, thereby realizing the rotation connection between the guide rail connecting piece 22 and the guide rail assembly 1 through the shaft hole rotation connection mode on the basis of ensuring the structural stability.

[0087] It should be noted that, in order to ensure that the guide rail connecting piece 22 does not interfere during rotation, the end of the first connecting wall 2211 and the end of the second connecting wall 2212 are both arc-shaped structures, and the size of the side wall 2213 in the movement direction of the lock tongue 23 is shorter than the size of the first connecting wall 2211 and the second connecting wall 2212 in the movement direction.

[0088] Based on the above embodiment, the connecting structure further includes a sliding block 27 slidingly arranged on the side wall 2213 and fixedly connected to the end of the connecting rod 26 close to the rotating end 221, so as to support and position the end of the connecting rod 26 close to the rotating end 221, and also guide the movement of the connecting rod 26.

[0089] Referring to Figure 3 and Figure 7 , the free end 222 is configured as a clamping boss, the lock tongue 23 extends out of the clamping boss, the door frame connecting piece 21 includes a U-shaped accommodating groove, the opening of the U-shaped accommodating groove faces upward, the clamping boss is embedded in the U-shaped accommodating groove, thereby facilitating the connection between the guide rail connecting piece 22 and the door frame connecting piece 21, and also limiting the movement of the guide rail connecting piece 22 in a direction away from the opening.

[0090] More specifically, the clamping boss is a cylindrical clamping boss, which can also rotate around its own axis after being embedded in the U-shaped accommodating groove, thereby facilitating the adjustment of the angle of the guide rail assembly 1 when placed, and further adjusting the height of the guide rail assembly 1. At the same time, in order to further adjust the angle of the guide rail assembly 1 when placed, the bottom end of the guide rail assembly 1 is provided with a roller 15. The roller 15 can roll along the ground, thereby more conveniently adjusting the included angle between the guide rail assembly 1 and the ground or the hatch.

[0091] The door frame connecting piece 21 further comprises a positioning groove 211 arranged in the U-shaped accommodating groove, and the positioning groove 211 is aligned with the lock tongue 23 when the clamping boss is embedded in the U-shaped accommodating groove. In specific use, when the clamping boss is embedded in the U-shaped accommodating groove, the positioning groove 211 is aligned with the lock tongue 23, thereby realizing the positioning of the positioning groove 211 and the lock tongue 23, and ensuring that the lock tongue 23 can be smoothly inserted into the positioning groove 211 after being driven by the driving piece 24 to extend out of the clamping boss.

[0092] Hereinafter, the transport loading device provided by the present application will be described in detail.

[0093] Please continue to refer to Figure 1 The transport loading device comprises a guide rail assembly 1, the guide rail assembly 1 comprises a plurality of guide rail segments (11, 12, 13) connected with each other, each guide rail segment comprises a pair of guide rails arranged in parallel and perpendicular to the extension direction of the guide rail assembly 1, the guide rails on the same side of the plurality of guide rail segments are arranged continuously along the extension direction, at least one guide rail in the guide rail segment at the top end (i.e., the guide rail segment 11) of the guide rail assembly 1 is provided with the above-mentioned connecting structure 2, the guide rail connecting piece 22 in the connecting structure 2 is arranged on the outer side wall of the guide rail, and the outer side wall is the side wall opposite to the other side wall in the pair of guide rails in the guide rail segment at the top end.

[0094] Since the connecting structure in the transport loading device provided by the present application has the same structure as the above-mentioned connecting structure, the transport loading device can solve the technical problems solved by the above-mentioned connecting structure and achieve the technical effects achieved by the above-mentioned connecting structure.

[0095] It can be understood that the plurality of guide rail segments connected with each other can be fixedly connected together in a detachable manner or pivotally connected together in a rotating connection manner. The former technical solution can adjust the overall height of the guide rail assembly 1, and the latter solution facilitates the folding and storage of the guide rail assembly 1.

[0096] For example, the guide rail assembly 1 comprises two end guide rail segments (11, 13) and one middle guide rail segment (12), wherein the end guide rail segments (11, 13) can be folded inward into the connected middle guide rail segment (12) via the pivot shafts, respectively, and accommodated in the internal space of the middle guide rail segment (12) to reduce the space requirement for storage.

[0097] Please continue to refer to Figure 3 、 Figure 4 and Figure 8The transport loading device further comprises a mounting piece 16 provided on the outer side wall and rotationally connected with the rotating end 221; wherein the mounting piece 16 is provided with a third limiting part, and the rotating end 221 is provided with a fourth limiting part, when the guide rail connecting piece 22 rotates to the unfolded position along the second direction (clockwise direction), the third limiting part and the fourth limiting part are matched to prevent the guide rail connecting piece 22 from continuing to rotate along the second direction when being located at the unfolded position, wherein the first direction and the second direction are opposite directions.

[0098] More specifically, the limiting part can be realized by the positioning mode of the positioning pin. For example, a positioning hole is provided on the rotating end 221, and another positioning hole is provided on the mounting piece 16, when the guide rail connecting piece 22 rotates to the unfolded position along the second direction, the two positioning holes are aligned, at this time, the staff inserts the fixed pin shaft into the two positioning holes to prevent relative rotation between them.

[0099] Alternatively, continuing to refer to Figure 3 , Figure 4 and Figure 8 , the mounting piece 16 comprises a first U-shaped mounting piece 161 and a second U-shaped mounting piece 162, the U-shaped openings of the first U-shaped mounting piece 161 and the second U-shaped mounting piece 162 both face the bottom of the guide rail assembly 1, one side end wall of the first U-shaped mounting piece 161 (i.e. one of the two U-shaped walls of the first U-shaped mounting piece 161) is connected on the outer side wall of the top guide rail segment, and the other side end wall faces away from the outer side wall, so that the first connecting wall 2211 extends into the first U-shaped mounting piece 161 and is rotationally connected with the first U-shaped mounting piece 161. Wherein, the second U-shaped connecting piece 162 and the second connecting wall 2212 are arranged in the same way.

[0100] It can be understood that the first U-shaped mounting piece 161 and the second U-shaped mounting piece 162 are further provided with a sliding block limiting groove 17, when the guide rail connecting piece 22 rotates to the unfolded position, the sliding block 27 is embedded in the sliding block limiting groove 17, further limiting the guide rail connecting piece 22 from continuing to rotate along the second direction.

[0101] Referring to Figure 1 and Figure 9The transport loading device further comprises a lifting platform assembly 3, which comprises a support platform 31, a sliding chassis 32 matched with the guide rails to lift along the through passage formed by the plurality of guide rail segments (11, 12, 13), and a support rod set 33, the support platform 31, the sliding chassis 32 and the support rod set 33 are jointly connected to form a triangular structure, and the support platform 31 and the support rod set 33 are both rotationally connected with the sliding chassis 32, so that the support platform 31 and the support rod set 33 can be folded on the guide rail assembly 1, further reducing the storage volume of the transport loading device.

[0102] More specifically, the support platform 31 comprises a mounting frame 311, a movable plate 312 and a anti-disengagement member. The mounting frame 311 is used to mount the sliding chassis 32 and the support rod set 33, that is, the sliding chassis 32 and the support rod set 33 are both connected on the mounting frame 311. The movable plate 312 is slidingly arranged on the mounting frame 311, so that the transport object is convenient to transfer, thereby improving the convenience of the support platform 31 in use. The movable plate 312 is provided with an anti-disengagement member comprising a first anti-disengagement part and a second anti-disengagement part, which are matched to fix the transport object. It should be noted that, Figure 9 The direction of the arrow indicates the sliding direction of the movable plate 312.

[0103] The movable plate 312 is slidingly arranged on the mounting frame 311, which can ensure that the movable plate 312 can be pulled out of the mounting frame 311 when the support platform 31 moves to the top end of the guide rail assembly 1, realizing the further transfer of the stretcher patient to the aircraft cabin when the stretcher patient is carried to the boarding gate.

[0104] For example, the movable plate 312 is generally in the shape of a rectangular plate, and two long edges of the movable plate 312 are provided with guide rails consistent with the extension direction thereof, and the mounting frame 311 is provided with a corresponding guide groove (both ends of the guide groove are closed ends), and the length of the guide groove can control the movement distance of the movable plate 312, thereby preventing the movable plate 312 from disengaging from the mounting frame 311 during sliding.

[0105] Alternatively, the connection mode of the mounting frame 311 and the movable plate 312 can adopt the same structure as the existing pull-out drawer, and when the movable plate 312 is pulled to the maximum position, it will be fixed on the mounting frame 311.

[0106] Continuing to refer to Figure 1The transportation loading device further comprises an auxiliary supporting assembly 4 arranged at a lower region of the guide rail assembly 1, the auxiliary supporting assembly 4 comprises a supporting rod 41 and a limiting piece 42, one end of the supporting rod 41 is abutted against the ground, the other end is rotationally connected with the lower region of the guide rail assembly 1, one end of the limiting piece 42 is connected with the supporting rod 41, the other end is connected with the lower region of the guide rail assembly 1, and the connecting position of the limiting piece 42 with the lower region is below the connecting position of the supporting rod 41 with the lower region.

[0107] Thus, when the supporting rod 41 is expanded relative to the guide rail assembly 1, a triangular supporting structure is formed by the supporting rod 41, the guide rail assembly 1 and the ground, and another triangular supporting structure is formed by the supporting rod 41, the guide rail assembly 1 and the limiting piece 42, so that the supporting of the auxiliary supporting assembly 4 is more solid and reliable. In this way, one end of the supporting rod 41 is abutted against the ground, the other end is rotationally connected with the lower region of the guide rail assembly 1, so that the auxiliary supporting assembly 4 can be folded on the guide rail assembly 1 through the rotationally connected part after the use of the transportation loading device is completed.

[0108] It should be noted that the limiting piece 42 can be a rope-shaped supporting piece or a columnar rod-shaped supporting piece, when the supporting rod 41 is expanded relative to the guide rail assembly 1, the limiting piece 42 can limit and adjust the expansion angle of the supporting rod 41 relative to the guide rail assembly 1, so as to adapt to the change of the height of the transportation loading device, and make the installation and adjustment more convenient.

[0109] With reference to Figure 1 , Figure 10 and Figure 11 , the transportation loading device further comprises a driving assembly 5, the driving assembly 5 comprises a winch 51, a sling 52, a connecting supporting assembly 53 and a turning piece 54, the winch 51 and the turning piece 54 are installed on the sliding chassis 32, the connecting supporting assembly 53 is arranged at the top end of the guide rail assembly 1, one end of the sling 52 is connected with the connecting supporting assembly 53, the other end passes through the turning piece 54 and is connected with the winch 51, so that the driving assembly 5 can realize the ascending, descending, stopping and resetting of the sliding chassis 32 (i.e. the lifting platform assembly 3), and the movement speed of the lifting platform assembly 3 can be adjusted.

[0110] With reference to Figure 10It should be noted that the connecting support assembly 53 comprises a support column 531 arranged at the top end of the guide rail assembly 1, a first reinforcing rod 532 and a second reinforcing rod 533. The two ends of the support column 531 are respectively connected to the inner side walls of a pair of guide rail segments 11 at the top end, the first end of the first reinforcing rod 532 is connected to (or arranged close to) the middle position of the support column 531, and the second end of the first reinforcing rod 532 is connected to one of the two inner side walls and forms an included angle with the support column 531. The first end of the second reinforcing rod 533 is connected to (or arranged close to) the middle position of the support column 531, and forms a gap with the first end of the first reinforcing rod 532, which is used to accommodate the sling 52, and the second end of the second reinforcing rod 533 is connected to the other of the two inner side walls and forms an included angle with the support column 531. Thus, the first reinforcing rod 532 and the second reinforcing rod 533 can support the support column 531, ensuring that the connecting support assembly 53 has a relatively stable and reliable structure.

[0111] With reference to the foregoing Figure 1 , Figure 11 and Figure 12 , the guide rail assembly 1 is provided with at least one tensioning wheel 18 spaced along the extension direction thereof, which is in contact with the section of the sling 52 between the connecting support assembly 53 and the diverting piece 54, ensuring that the section of the sling 52 between the connecting support assembly 53 and the diverting piece 54 is in a tensioned state.

[0112] In addition, the driving assembly 5 further comprises a guide anti-falling piece 55 arranged on the sling 52 and close to the diverting piece 54, and a spring piece 56 arranged on the diverting piece 54, which is used to provide a pre-tightening force to the guide anti-falling piece 55 when the sling 52 is in a tensioned state, thereby playing a role of anti-falling of the guide anti-falling piece 55. When the sling 52 is in a relaxed or broken state, the guide anti-falling piece 55 is hooked to a transverse piece (arranged on the guide rail assembly 1).

[0113] In the description of the present specification, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0114] The above merely describes specific embodiments of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims. In addition, the principles and embodiments of the present application are described by applying specific examples in the specification, and the above description of the embodiments is only used to help understand the method and core idea of the present application, and the content of the specification should not be understood as limiting the present application.

Claims

1. A connection structure for connecting a guide rail assembly in a transport loading device to a target location, characterized in that: The connection structure includes: a door frame connector, installed at the target position; a guide rail connector, comprising a rotating end and a free end disposed opposite to each other, wherein the rotating end is rotatably connected to the top end of the guide rail assembly so as to rotate the guide rail connector between an extended position and a retracted position; a lock tongue, the lock tongue being movably disposed at the free end; A driving member is connected to the lock tongue to drive the lock tongue to extend or retract the free end, wherein When the guide rail connector is in the expanded position and the lock tongue extends out of the free end, the lock tongue is clamped on the door frame connector; when the lock tongue retracts to the free end, the guide rail connector is rotated along the first direction to the retracted position, so that the guide rail connector is stacked in the guide rail assembly, thereby achieving the accommodation of the guide rail connector.

2. The connection structure according to claim 1, characterized in that: Also includes: A locking member is connected to the guide rail connector or the lock tongue. When the lock tongue extends out of the free end, the locking member can lock the lock tongue and the guide rail connector.

3. The connection structure according to claim 2, characterized in that: The locking member is configured as an elastic member, which is provided at one end of the lock tongue facing the rotating end. When the lock tongue extends out of the free end, the elastic member provides a pre-tightening force to the lock tongue toward the free end.

4. The connection structure according to claim 3, characterized in that: The guide rail connector also includes a main body connecting the free end and the rotating end. A mounting hole is formed on the side of the main body close to the free end and passes through the free end. The mounting hole has a mounting end and an abutting end that are opposite to each other. The lock tongue and the elastic member are both accommodated in the mounting hole through the mounting end. The end of the elastic member facing away from the lock tongue abuts against the abutting end and is in a compressed state.

5. The connection structure according to claim 4, characterized in that: A limiting groove is formed on the side wall of the main body, which is connected to the mounting hole and arranged opposite to the lock tongue. One end of the driving member extends into the limiting groove and is connected to the lock tongue. The limiting groove has a first limiting portion close to the free end, a second limiting portion close to the rotating end, and an intermediate connecting portion connecting the first limiting portion and the second limiting portion. The driving member can move between the first limiting portion and the second limiting portion. When the driving member is positioned at the first limiting portion, the lock tongue extends and is locked at the free end. When the driving member is positioned at the second limiting portion, the lock tongue retracts and is locked at the free end.

6. The connection structure according to claim 5, characterized in that: The limiting groove is any one of a U-shaped limiting groove, an H-shaped limiting groove, a Π-shaped limiting groove, an M-shaped limiting groove, an inverted M-shaped limiting groove or an N-shaped limiting groove.

7. The connection structure according to claim 5, characterized in that: The first limiting portion and the second limiting portion are both configured as clips protruding from the lower side wall of the limiting groove, the middle connecting portion is configured as a connecting groove with the same movement direction as the lock tongue, and an accommodating cavity for accommodating the driving member is formed between the two ends of the limiting groove and the two sides opposite to each other of the two clips.

8. The connection structure according to claim 4, characterized in that: The driving member is a driving motor, and the connecting structure also includes a worm wheel connected to the driving motor and a worm matched with the worm wheel. The moving direction of the worm is consistent with the moving direction of the lock tongue and is fixedly connected to the lock tongue.

9. The connection structure according to any one of claims 4 to 7, characterized in that: Also includes: The connecting rod, the locking tongue and the elastic member are all sleeved on the connecting rod, and the size of the mounting hole close to the rotating end is smaller than the size of the elastic member and matches the size of the connecting rod.

10. The connection structure according to claim 9, characterized in that: The connecting rod includes a rod section and a limiting section, the size of the limiting section is larger than the size of the rod section, the locking tongue is slidably installed in the mounting hole, a stepped hole is formed in the locking tongue, the large hole end of the stepped hole is farther away from the elastic member than the small hole end, the size of the large hole end is larger than or equal to the size of the limiting section, and the small hole end matches the rod section.

11. The connection structure according to claim 9, characterized in that: The side of the main body close to the rotating end includes a first connecting wall, a second connecting wall arranged opposite to the first connecting wall, and a side wall connecting the first connecting wall and the second connecting wall, wherein: The rotating end is configured as a first pivot hole provided on the first connecting wall, and a second pivot hole provided on the second connecting wall and corresponding to the first pivot hole, and the first pivot hole and the second pivot hole are rotatably connected to the top end of the guide rail assembly.

12. The connection structure according to claim 11, characterized in that: Also includes: The slider is slidably arranged on the side wall and fixedly connected to the end of the connecting rod close to the rotating end.

13. The connection structure according to claim 1 or 11, characterized in that: The free end is configured as a clamping protrusion, the lock tongue extends out of the clamping protrusion, the door frame connecting piece includes a U-shaped receiving groove, the opening of the U-shaped receiving groove faces upward, and the clamping protrusion is embedded in the U-shaped receiving groove.

14. The connection structure according to claim 13, characterized in that: The door frame connector also includes a positioning groove, which is provided in the U-shaped receiving groove. When the clamping boss is embedded in the U-shaped receiving groove, the positioning groove and the lock tongue are aligned.

15. A transport loading device, characterized in that: include: A guide rail assembly, wherein the guide rail assembly includes a plurality of guide rail segments connected to each other, each guide rail segment includes a pair of guide rails perpendicular to the extension direction of the guide rail assembly and arranged in parallel, the guide rails on the same side of the plurality of guide rail segments are arranged continuously along the extension direction, and at least one of the guide rails in the guide rail segment at the top end of the guide rail assembly is provided with a connecting structure as described in any one of claims 1 to 14, the guide rail connector in the connecting structure is arranged on the outer side wall of the guide rail, and the outer side wall is the back-to-back side walls of a pair of guide rails in the guide rail segment at the top end.

16. The transport loading device according to claim 15, characterized in that: Also includes: The mounting member is arranged on the outer side wall and is rotatably connected to the rotating end; wherein, a third limiting portion is provided on the mounting member, and the rotating end is provided on a fourth limiting portion. When the guide rail connector is rotated to the expanded position along the second direction, the third limiting portion and the fourth limiting portion cooperate to prevent the guide rail connector from continuing to rotate in the second direction when it is in the expanded position, wherein the first direction and the second direction are opposite.

17. The transport loading device according to claim 15, characterized in that: Also includes: A lifting platform assembly, the lifting platform assembly includes a support platform, a sliding chassis and a support rod group, the sliding chassis cooperates with the guide rail to lift and lower along the through channel formed by multiple guide rail segments, the support platform, the sliding chassis and the support rod group are connected together to form a triangular structure, the support platform and the support rod group are all rotatably connected to the sliding chassis so that the support platform and the support rod group can be folded on the guide rail assembly.

18. The transport loading device according to claim 17, characterized in that: The support platform comprises: A mounting frame, the sliding chassis and the support rod group are both connected to the mounting frame; A movable plate, the movable plate being slidably arranged on the mounting frame; The anti-slip component comprises a first anti-slip portion and a second anti-slip portion, wherein the first anti-slip portion and the second anti-slip portion cooperate to fix the transported object.

19. The transport loading device according to claim 15, characterized in that: Also includes: An auxiliary support assembly is arranged in the lower area of ​​the guide rail assembly, and the auxiliary support assembly includes a support rod and a limit member, one end of the support rod is against the ground, and the other end is rotatably connected to the lower area of ​​the guide rail assembly, one end of the limit member is rotatably connected to the support rod, and the other end is connected to the lower area of ​​the guide rail assembly, and the connection position of the limit member and the lower area is located below the connection position of the support rod and the lower area, which is used to limit the expansion angle of the support rod relative to the guide rail assembly.

20. The transport loading device according to claim 17, characterized in that: Also includes: A drive assembly includes a winch, a sling, a connecting support assembly and a steering member. The winch and the steering member are both installed on the sliding chassis. The connecting support assembly is arranged at the top end of the guide rail assembly. One end of the sling is connected to the connecting support assembly, and the other end passes around the steering member and is connected to the winch.

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