Loading vehicle

Abstract

The utility model provides a loading vehicle which comprises at least one containing assembly, at least one folding unit and a plurality of advancing wheels arranged at the bottom of the folding unit, the folding unit comprises outer frame rod sets and a plurality of pairs of cross rods which are arranged in pairs, each outer frame rod set comprises a plurality of vertical rods, at least one sliding hinge piece is arranged on each vertical rod in a sliding mode, and each sliding hinge piece is connected with the corresponding cross rod. The paired outer frame rod groups can be close to or far away from each other, so that the space limited by the vertical rods is shrunk or expanded; the storage assembly comprises a locking structure and at least one locking component, the locking structure and the locking component are arranged on the vertical rods in the different outer frame rod sets respectively, the locking component can be buckled with the corresponding locking structure when the outer frame rod sets get close to each other, and the locking structure can selectively release the buckling relation with the locking component. According to the loading vehicle, the locking structure and the locking component can be buckled with each other, the structural stability of the loading vehicle in the folded state is guaranteed, and the convenience of folding and unfolding operation of the loading vehicle is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of daily necessities, and particularly to a loading vehicle. Background Art

[0002] Folding carts are often used in outdoor camping, parent-child travel and other scenarios. When it is necessary to carry materials such as food ingredients or to carry children to play, the materials or children can be placed in the cart body, and the load is supported by the bottom rollers of the folding cart, so as to achieve the effect of saving the physical strength of users. And after use, the folding cart can also be folded to reduce its own volume and is convenient to carry.

[0003] In order to improve the stability of the folding cart in the folded state, the existing folding cart structures usually use straps or complex mechanical structures to lock the folded state. It takes a lot of time for users to lock and unlock the folding cart, resulting in poor disassembly and assembly convenience of the folding cart. Moreover, the existing folding cart structures are relatively single and usually can only switch between the open state and the folded state. The cart capacity and cart size are generally fixed when it is opened for use, resulting in lack of convenience in some environments and inability to meet the various needs of consumers in different usage environments. Summary of the Utility Model

[0004] The utility model aims to solve one of the technical problems in the related technologies to a certain extent. For this purpose, the utility model provides a loading vehicle which can be quickly locked and unlocked, improves the convenience of folding and opening operations of the loading vehicle, and can also freely adjust the overall capacity and external size of the loading vehicle, and improves the adaptability of the loading vehicle to various usage scenarios.

[0005] To achieve the above object, the utility model provides a loading vehicle, including at least one storage component, at least one folding unit, and a plurality of traveling wheels arranged at the bottom of the folding unit. The folding unit includes a pair of outer frame rod groups and multiple pairs of cross rods. The outer frame rod groups include a plurality of vertical rods, and at least one sliding hinge is slidably arranged on each vertical rod. Each pair of cross rods is cross-arranged and hinged to each other at the intersection. The first ends of each pair of cross rods are respectively hinged to the vertical rods in different outer frame rod groups, and the second ends of each pair of cross rods are respectively hinged to the sliding hinges on the vertical rods in different outer frame rod groups. And the first end of one cross rod in each pair of cross rods is connected to the second end of the other cross rod on the same vertical rod. The paired outer frame rod groups can approach or move away from each other, so that the space defined by the plurality of vertical rods shrinks or expands;

[0006] The storage component includes a locking structure and at least one locking member. The locking structure and the locking member are respectively connected to different outer frame rod groups, and the locking member can be locked and connected to the corresponding locking structure when the outer frame rod groups approach each other.

[0007] Optionally, the locking structure includes a mounting seat, a locking member, and an elastic member. The mounting seat is connected to the corresponding outer frame rod group. The locking member has a locking surface on the side facing the mounting seat, and a mating groove is provided on the locking surface. The elastic member is used to drive the locking member close to the mounting seat by elastic force.

[0008] The locking member has a locking block, and the locking block can approach the mounting seat as the vertical rods approach each other when the loading vehicle is folded. Until the locking block enters and is clamped in the mating groove to keep the loading vehicle in the folded state; the locking member can release the locking member in the mating groove when pulled away from the mounting seat by an external force to allow the loading vehicle to unfold.

[0009] Optionally, the locking structure includes a mounting seat, a locking member, and an elastic member. The mounting seat and the locking member are respectively used to be fixedly connected to different vertical rods on the loading vehicle. The locking member has a locking surface on the side facing the mounting seat, and a mating groove is provided on the locking surface. The elastic member is used to drive the locking member close to the mounting seat by elastic force.

[0010] The locking member has a locking block, and the locking block can approach the mounting seat as the vertical rods approach each other when the loading vehicle is folded. Until the locking block enters and is clamped in the mating groove to keep the loading vehicle in the folded state; the locking member can release the locking member in the mating groove when pulled away from the mounting seat by an external force to allow the loading vehicle to unfold.

[0011] Optionally, the locking block has a first mating inclined surface for contacting the locking member. There is an included angle between the first mating inclined surface and the direction in which the locking block enters the mating groove, and the first mating inclined surface can push the locking member away from the mounting seat during the process of the locking block entering the mating groove.

[0012] Optionally, the thickness of the locking member gradually decreases near the edge, and a second mating inclined surface is formed at the edge of the locking surface.

[0013] Optionally, the storage component further includes a stop structure. The mounting base has at least one through guiding and avoiding hole, and the locking member has at least one guiding post. One end of the guiding post away from the locking member passes through the guiding and avoiding hole and is fixedly connected to the stop structure. The elastic member is used to drive the stop structure away from the mounting base by elastic force, so as to drive the locking member on the other side of the mounting base close to the mounting base through the guiding post.

[0014] Optionally, the guiding post is located at the bottom of the fitting groove.

[0015] Optionally, the elastic member is a spring. The elastic member is sleeved on the guiding post. The stop structure includes at least one locking screw. The locking screw is screwed into the guiding post. The elastic member drives the head of the locking screw away from the mounting base by elastic force to drive the locking member close to the mounting base.

[0016] Optionally, at least one mounting groove is provided on the side of the mounting base facing away from the locking member. The mounting groove is used to accommodate and fix the end of the vertical rod, and the guiding and avoiding hole is located at the bottom of the mounting groove.

[0017] Optionally, at least one mounting sleeve is provided on the side of the mounting base facing away from the locking member, and the mounting groove is formed in the mounting sleeve.

[0018] Optionally, at least one first hinge portion is further provided on the mounting base. The first hinge portion is used to hinge with one of the pair of cross rods of the loading vehicle. The locking member includes a locking mounting sleeve and a second hinge portion provided on the locking mounting sleeve. The locking mounting sleeve is used to sleeve and fix on the vertical rod, and the second hinge portion is used to hinge with the other of the pair of cross rods of the loading vehicle.

[0019] Optionally, the first hinge portion includes a pair of first hinge plates spaced along the vehicle width direction. A first hinge hole is formed in the first hinge plate. The cross rod is hingedly connected to the first hinge portion through a fastener passing through the first hinge hole and a connection through hole on the cross rod.

[0020] Optionally, the locking block is provided on the second hinge portion.

[0021] Optionally, at least part of the interior of the vertical rod has a hollow fitting hole. The loading vehicle further includes a plurality of extension bars. The extension bar includes an enclosing portion and a plurality of insertion rods. The top end of the insertion rod is fixedly connected to the enclosing portion, and the bottom end of the insertion rod is inserted into the hollow fitting hole so that the height of the enclosing portion relative to the outer frame rod group is adjustable.

[0022] The locking member further includes an extension button, a fixing pin, and an extension elastic member. The locking mounting sleeve has a first avoidance hole communicating with its inner hole. The extension button has a pressing end and a driving end, and the extension button is hinged to the locking mounting sleeve at a position between the pressing end and the driving end. One end of the fixing pin is connected to the driving end, and the other end passes through the first avoidance hole;

[0023] The extension elastic member can drive the pressing end of the extension button away from the inner hole of the locking mounting sleeve through elastic force, so that the driving end approaches the inner hole and drives the fixing pin to pass through the first avoidance hole and enter the mating pin hole on the insertion rod, and fixes the position of the insertion rod in the hollow mating hole.

[0024] Optionally, the second hinge portion includes a pair of second hinge plates arranged at intervals. An extension hinge hole is formed in the second hinge plate. The cross rod is hingedly connected to the second hinge portion through a fastener passing through the extension hinge hole and the connection through hole on the cross rod.

[0025] Optionally, the locking mounting sleeve has a button groove. The first avoidance hole communicates the button groove with the inside of the locking mounting sleeve. The extension button is arranged in the button groove, and the extension button is hinged to the side wall of the button groove.

[0026] Optionally, the receiving assembly includes a pair of the locking members. The mating groove of the locking member is used to cooperate with the locking blocks of the locking members on both sides.

[0027] Optionally, one side edge of the locking member along the direction perpendicular to the extension direction of the mating groove has a concave notch.

[0028] Optionally, a fixing ring is arranged on the mounting seat. The fixing ring is used to connect with a fixing buckle on the enclosure of the loading vehicle to connect the enclosure to the locking structure.

[0029] Optionally, the loading vehicle includes a plurality of folding units connected to each other.

[0030] Optionally, the mounting seat of the locking structure has at least one first hinge portion. The first hinge portion is hinged to the first end of one of the pair of cross rods; the locking member includes a locking mounting sleeve and a second hinge portion arranged on the locking mounting sleeve. The locking mounting sleeve is sleeved and fixed on the corresponding vertical rod, and the second hinge portion is hinged to the first end of the other of the pair of cross rods.

[0031] Optionally, the locking structure is arranged at the top of the connection between adjacent folding units, and the mounting seat is fixedly connected to the top ends of the vertical rods of adjacent folding units.

[0032] Optionally, the sliding hinge is located below the hinge position between the vertical rod and the corresponding cross rod, that is, the top end of the cross rod is hinged to the vertical rod, and the bottom end of the cross rod is hinged to the sliding hinge.

[0033] Optionally, the top end of the cross rod is hingedly connected to the top end of the vertical rod.

[0034] Optionally, a plurality of the folding units are sequentially connected in the vehicle length direction, and each pair of the outer frame rod groups of the folding unit are symmetrically arranged in the vehicle length direction.

[0035] Optionally, the loading vehicle further includes a storage pocket, the storage pocket includes a surrounding wall and a bottom sheet, the surrounding wall is arranged around the space defined by the plurality of folding units, and the bottom sheet is connected to the bottom of the surrounding wall and seals the bottom opening of the surrounding wall.

[0036] Optionally, the top of the surrounding wall has a mounting hole, and the mounting hole is sleeved on the vertical rod.

[0037] Optionally, a strap is arranged on the surrounding wall, and the surrounding wall is fixed to the outer frame rod group through the strap.

[0038] Optionally, a fixing ring is arranged on the mounting seat, and the surrounding wall has a plurality of fixing buckles. The fixing buckles pass through the fixing ring and are connected to the fixing ring to connect the surrounding wall to the locking structure.

[0039] Optionally, the storage pocket further includes at least one partition piece, and the partition piece is arranged between the spaces defined by adjacent folding units and separates the spaces defined by adjacent folding units.

[0040] Optionally, the traveling wheels include at least one first traveling wheel arranged on one side of the loading vehicle in the vehicle length direction and a plurality of second traveling wheels arranged on the other side of the loading vehicle in the vehicle length direction.

[0041] Optionally, the first traveling wheel is a universal wheel and the second traveling wheel is a directional wheel, or the first traveling wheel is a directional wheel and the second traveling wheel is a universal wheel.

[0042] Optionally, the first traveling wheel is a universal wheel, and the first traveling wheel is arranged at the bottom end of the vertical rod on one side of the loading vehicle in the vehicle length direction.

[0043] Optionally, a brake is arranged on the first traveling wheel. The brake can stop the first traveling wheel from rotating when pressed on one side and allow the first traveling wheel to rotate when pressed on the other side.

[0044] Optionally, the loading vehicle further comprises a pull rod, one end of which is hinged to the folding unit at one end along the vehicle length direction, and the other end of the pull rod is provided with a pull ring.

[0045] Optionally, the pull rod is hinged to the folding unit provided with the universal wheel.

[0046] Optionally, the vertical rods of the outer frame rod group are symmetrically arranged along a vehicle width direction, and the vehicle width direction intersects with the vehicle length direction.

[0047] Optionally, each of the folding units includes a pair of outer frame rod groups symmetrically arranged along the vehicle length direction, and each of the outer frame rod groups includes a pair of vertical rods symmetrically arranged along the vehicle width direction.

[0048] Optionally, the sliding hinge comprises a sliding sleeve and a sliding hinge portion, the sliding sleeve is sleeved on the corresponding vertical rod, and the sliding hinge portion is hingedly connected to the cross rod.

[0049] Optionally, the sliding hinge part includes a pair of sliding hinge plates arranged at intervals along the vehicle width direction, and sliding hinge holes are formed in the sliding hinge plates. The cross rod is hingedly connected to the sliding hinge part by a fastener passing through the sliding hinge hole and a connecting through hole on the cross rod.

[0050] Optionally, at least part of the vertical rods have hollow matching holes inside; the loader also includes a plurality of extension bars, each of which includes an enclosure and a plurality of plug-in rods, the top ends of the plug-in rods are fixedly connected to the enclosure, and the bottom ends of the plug-in rods are inserted into the hollow matching holes, so that the height of the enclosure relative to the outer frame rod group can be adjusted.

[0051] Optionally, the enclosure portion includes an extended crossbeam extending in the vehicle width direction and a plurality of adapters, the adapters are arranged in pairs at both ends of each extended crossbeam, and the extended crossbeam is connected to the top ends of the plug-in rods on both sides through the adapters.

[0052] Optionally, the storage pocket further comprises an expansion sleeve, wherein the expansion sleeve is arranged around the space defined by the plurality of folding units, and the bottom opening of the expansion sleeve is connected to the top opening of the enclosure, and the top of the expansion sleeve is connected to the enclosure.

[0053] Optionally, the expansion sleeve is made of mesh material.

[0054] Optionally, the locking components are fixedly provided on the vertical rods at both ends along the vehicle length direction.

[0055] Optionally, the loading vehicle further comprises a plurality of top cross beams, and the locking components on each pair of the vertical rods are fixedly connected via the top cross beams.

[0056] Optionally, the top of one side of the enclosure above the top cross beam has a connecting inner hole, and the top cross beam passes through the connecting inner hole in the enclosure to fix the height position of the enclosure.

[0057] Optionally, the locking member includes a locking mounting sleeve, a second hinge portion, an expansion button, a fixing pin and an expansion elastic member. The locking mounting sleeve is sleeved on the vertical rod, the second hinge portion is located on the locking mounting sleeve, and the second hinge portion is hingedly connected to the first end of the corresponding cross rod. The locking mounting sleeve has a first avoidance hole communicating with its interior. The expansion button has a pressing end and a driving end, and the expansion button is hinged to the locking mounting sleeve at a position between the pressing end and the driving end. One end of the fixing pin is connected to the driving end, and the other end passes through the first avoidance hole;

[0058] The insertion rod has at least one mating pin hole. The expansion elastic member can drive the pressing end of the expansion button away from the vertical rod through elastic force, so that the driving end approaches the vertical rod and drives the fixing pin into the mating pin hole to fix the position of the insertion rod in the hollow mating hole.

[0059] Optionally, the second hinge portion includes a pair of second hinge plates spaced apart in the vehicle width direction. An expansion hinge hole is formed in the second hinge plate. The cross rod is hingedly connected to the second hinge portion through a fastener passing through the expansion hinge hole and a connection through hole on the cross rod.

[0060] Optionally, the locking mounting sleeve has a button groove. The first avoidance hole communicates the button groove with the interior of the locking mounting sleeve. The expansion button is arranged in the button groove and the expansion button is hinged to the side wall of the button groove.

[0061] Optionally, the vertical rod has a second avoidance hole penetrating from the outer surface of the vertical rod to the hollow mating hole, and the position of the first avoidance hole corresponds to the position of the second avoidance hole.

[0062] Optionally, the folding unit further includes a bottom support frame. The bottom support frame is connected between the bottoms of the outer frame rod groups of the folding unit, and the bottom support frame can be folded when the outer frame rod groups approach each other, and can be unfolded when the outer frame rod groups move away from each other, and is erected between the outer frame rod groups.

[0063] Optionally, the loading vehicle further includes a plurality of bottom cross beams. At least one pair of the bottom ends of the vertical rods of at least one bottom support frame in each folding unit are fixedly connected through the bottom cross beams;

[0064] The bottom support frame includes a bottom support frame body and connecting bars arranged in pairs on both sides of the bottom support frame body. The first end of the bottom support frame body is hinged to the bottom end of the outer frame bar group on one side, and the second end of the bottom support frame body can be placed on the corresponding bottom cross beam of the outer frame bar group on the opposite side when the folding unit is unfolded. One end of the connecting bar is hinged to the bottom end of the outer frame bar group on the opposite side, and the other end of the connecting bar is hinged to a position between the first end and the second end of the bottom support frame body.

[0065] Optionally, the first traveling wheel is a universal wheel, and the bottom cross beam corresponding to the first traveling wheel has a concave portion formed by downward bending in the central region, and the pull rod is hingedly connected to the concave portion.

[0066] Optionally, the loading vehicle further includes a plurality of cross beam connectors. The bottom ends of the adjacent vertical rods of the adjacent folding units are interconnected through the cross beam connectors, and the cross beam connectors on both sides are interconnected through the bottom cross beam.

[0067] Optionally, the second traveling wheel is a directional wheel, and the second traveling wheel is arranged on the bottom cross beam on one side of the loading vehicle along the vehicle length direction.

[0068] In the loading vehicle provided by the present invention, the folding unit includes an outer frame bar group and multiple pairs of cross bars connected between the outer frame bar groups. Each pair of cross bars is cross-connected between the vertical rods of different outer frame bar groups. Thus, by moving the sliding hinge, changing the angle between the cross bars, and making the outer frame bar groups approach or move away from each other, the folding unit can be folded. Furthermore, the user can freely adjust the opening and folding states of the folding unit according to the current usage requirements, so as to adjust the overall capacity and external dimensions of the loading vehicle, and improve the adaptability of the loading vehicle to various usage scenarios.

[0069] Moreover, the storage assembly includes a locking structure and a locking component. The locking component and the locking structure can be buckled with each other when the folding unit is folded to keep the folding unit in the folded state, ensuring the structural stability of the loading vehicle in the folded state. And the user only needs to open the locking structure to release the buckling relationship between the locking structure and the locking component, then the locking component can be unlocked, and the vertical rods of the loading vehicle can be freely separated and unfolded, improving the convenience of the folding and opening operations of the loading vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0070] The following further describes the present invention with reference to the drawings:

[0071] Figure 1 is a schematic structural diagram of the loading vehicle provided by the embodiment of the present invention;

[0072] Figure 2 is Figure 1 a partial enlarged schematic diagram of the structure in area A in

[0073] Figure 3 is Figure 1 Partial enlarged schematic view of the middle structure in area B;

[0074] Figure 4 Schematic diagram of the folding principle of the loading vehicle provided by the embodiment of the present utility model;

[0075] Figure 5 Schematic side view of the loading vehicle provided by the embodiment of the present utility model in the open state;

[0076] Figure 6 Schematic side view of the loading vehicle provided by the embodiment of the present utility model in a partially folded state;

[0077] Figure 7 is Figure 6 Partial enlarged schematic view of the middle structure in area C;

[0078] Figure 8 is Figure 6 Partial enlarged schematic view of the middle structure in area D;

[0079] Figure 9 Schematic diagram of the locking principle of the extension bar in the loading vehicle provided by the embodiment of the present utility model;

[0080] Figure 10 Schematic side view of the loading vehicle provided by the embodiment of the present utility model in the folded state;

[0081] Figure 11 Schematic view of the state where a part of the folding unit of the loading vehicle provided by the embodiment of the present utility model is folded;

[0082] Figure 12 Schematic view of the state where another part of the folding unit of the loading vehicle provided by the embodiment of the present utility model is folded;

[0083] Figure 13 Schematic view of the structure of the loading vehicle provided by the embodiment of the present utility model in the folded state.

[0084] Explanation of reference numerals:

[0085] Folding unit 100; outer frame rod group 110; vertical rod 111; sliding hinge 112; cross rod 120; first traveling wheel 210; brake 211; second traveling wheel 220; extension bar 300; enclosure part 310; extension cross beam 311; adapter 312; insertion rod 320; locking component 400; locking mounting sleeve 410; second hinge part 420; extension button 430; pressing end 431; driving end 432; fixing pin 440; extension elastic part 450; locking structure 500; locking block 401; first mating inclined surface a1; fixing ring 502; mounting seat 510; mounting sleeve 511; first hinge part 512; locking part 520; mating groove 521; concave notch 522; guiding column 523; second mating inclined surface a2; elastic part 530; stop structure 540; bottom support frame 600; bottom support frame 610; connecting bar 620; top cross beam 710; bottom cross beam 720; cross beam connecting piece 730; pull rod 800; pull ring 830. Detailed implementation mode

[0086] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. Based on the embodiments in the implementation manners, it is intended to explain the present invention and should not be construed as a limitation to the present invention.

[0087] As used herein, the phrase "in one embodiment" or "example" or "instance" means that a particular feature, structure, or characteristic described in connection with the embodiment itself can be included in at least one embodiment of the present disclosure. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment.

[0088] To solve the above technical problems, the present invention provides a loading vehicle, as Figure 1 shown, the loading vehicle includes at least one storage assembly, at least one folding unit 100, and a plurality of traveling wheels disposed at the bottom of the folding unit 100. The folding unit 100 includes a pair of outer frame rod groups 110 and a plurality of pairs of cross rods 120. The outer frame rod group 110 includes a plurality of vertical rods 111. At least one sliding hinge 112 is slidably disposed on each vertical rod 111. Each pair of cross rods 120 is cross - arranged and hinged to each other at the crossing point. The first ends of each pair of cross rods 120 are respectively hinged to the vertical rods 111 in different outer frame rod groups 110. The second ends of each pair of cross rods 120 are respectively hinged to the sliding hinges 112 on the vertical rods 111 in different outer frame rod groups 110. And the first end of one cross rod 120 in each pair of cross rods 120 and the second end of the other cross rod 120 are connected to the same vertical rod 111. The pair of outer frame rod groups 110 can approach or move away from each other, so that the space defined by the plurality of vertical rods 111 shrinks or expands;

[0089] The storage assembly includes a locking structure 500 and at least one locking member 400. The locking structure 500 and the locking member 400 are respectively connected to different outer frame rod groups 110, and the locking member 400 can be locked and connected to the corresponding locking structure when the outer frame rod groups 110 approach each other.

[0090] In the loading vehicle provided by the present utility model, the folding unit 100 includes an outer frame rod group 110 and multiple pairs of cross rods 120 connected between the outer frame rod groups 110. Each pair of cross rods 120 is cross - connected between the vertical rods 111 of different outer frame rod groups 110. Thus, by moving the sliding hinge 112, changing the angle between the cross rods 120, and making the outer frame rod groups 110 approach or move away from each other, the folding unit 100 can be folded. Furthermore, the user can freely adjust the open and folded states of the folding unit 100 according to the current usage requirements, so as to adjust the overall capacity and the external dimensions of the loading vehicle, and improve the adaptability of the loading vehicle to various usage scenarios.

[0091] Moreover, the storage assembly includes a locking structure 500 and a locking member 400. The locking member 400 and the locking structure 500 can be locked and connected when the folding unit 100 is folded, locking the mutually approaching outer frame rod groups 110 together, thereby keeping the folding unit 100 in the folded state, ensuring the structural stability of the loading vehicle in the folded state. And the user only needs to release the locking relationship between the locking structure 500 and the locking member 400, then the outer frame rod groups 110 of the loading vehicle can be freely separated and unfolded, improving the convenience of the folding and opening operations of the loading vehicle.

[0092] As a preferred embodiment of the present utility model, as Figure 1 shown, the loading vehicle includes multiple interconnected folding units 100. The folding unit 100 includes paired outer frame rod groups 110 and multiple pairs of cross rods 120.

[0093] In the embodiment of the present utility model, the loading vehicle includes multiple independent folding units 100. Each folding unit 100 has an outer frame rod group 110 and multiple pairs of cross rods 120 connected between the outer frame rod groups 110. Each pair of cross rods 120 is cross - connected between the vertical rods 111 of different outer frame rod groups 110. Thus, by moving the sliding hinge 112, changing the angle between the cross rods 120, and making the outer frame rod groups 110 approach or move away from each other, each folding unit 100 can be independently folded. Furthermore, the user can freely adjust the open and folded states of the multiple folding units 100 according to the current usage requirements, and then adjust the overall capacity and the external dimensions of the loading vehicle, and improve the adaptability of the loading vehicle to various usage scenarios.

[0094] For example, when the loading vehicle is traveling in a narrow space, the user can fold up an appropriate number of folding units 100 and only use some of the folding units 100 to load materials, so that the loading vehicle can pass through flexibly; when the amount of loaded materials is small and the number of children on board decreases, the user can also fold up some of the folding units 100 to make the capacity of the loading vehicle adapt to the volume of materials and the number of children, thereby improving the stability and safety during the loading and transportation process.

[0095] In some alternative embodiments of the present invention, the locking structure 500 and the locking member 520 can be bonded together by a hook-and-loop fastener (for example, it can be a nylon fastener), or the locking structure 500 includes a cam wrench structure, and the two are locked in position by pressing the cam wrench into the groove of the locking member 520.

[0096] To facilitate the control of the locking and unlocking of the locking structure 500 and the locking member 520, as a preferred embodiment of the present invention, the locking structure 500 and the locking member 520 are snap-connected. Specifically, as Figure 2 、 Figure 7 shown, the locking structure 500 includes a mounting seat 510, a locking member 520, and an elastic member 530. The mounting seat 510 is connected to the corresponding outer frame rod group 110. The side of the locking member 520 facing the mounting seat 510 has a locking surface, and a mating groove 521 is provided on the locking surface. The elastic member 530 is used to drive the locking member 520 to approach the mounting seat 510 by elastic force;

[0097] As Figure 3 、 Figure 7 shown, the locking member 400 has a locking block 401, and the locking block 401 can approach the mounting seat 510 as the outer frame rod groups 110 approach each other when the loading vehicle is folded, until the locking block 401 enters and is clamped in the mating groove 521 to keep the loading vehicle in the folded state; the locking member 520 can release the locking member 400 in the mating groove 521 when pulled away from the mounting seat 510 by an external force to allow the loading vehicle to unfold.

[0098] In the embodiment of the utility model, the locking piece 520 of the locking structure 500 has a matching groove 521 on the locking surface facing the mounting seat 510, and the elastic piece 530 can drive the locking piece 520 to approach the mounting seat 510 through elastic force, so that the matching groove 521 automatically engages with the mounting seat 510; when the loader is folded, the locking block 401 on the locking component 400 can approach the mounting seat 510 as the outer frame rod groups 110 approach each other until the locking block 401 enters and is stuck in the matching groove 521, and the locking piece 520 keeps the locking block 401 in the matching groove 521 under the elastic force of the elastic piece 530, thereby keeping the loader in the folded state; when the user needs to open the loader, the locking piece 520 can be pulled away from the mounting seat 510 and the locking component 400 in the matching groove 521 is released to allow the loader to be unfolded.

[0099] In the utility model, the locking structure 500 and the locking component 400 can automatically maintain engagement through elastic force, thereby ensuring the structural stability of the loader in the folded state; and the user only needs to pull the locking piece 520 away from the mounting seat 510 to unlock the locking component 400, so that the vertical rod 111 of the loader can be freely separated and unfolded, thereby improving the convenience of the folding and opening operations of the loader.

[0100] In order to facilitate the locking block 401 to automatically enter the matching groove 521, as a preferred embodiment of the present utility model, Figures 7 to 9 As shown, the locking block 401 has a first mating bevel a1 for contacting the locking piece 520, and there is an angle between the first mating bevel a1 and the direction in which the locking block 401 enters the mating groove 521, and the first mating bevel a1 can push the locking piece 520 away from the mounting seat 510 when the locking block 401 enters the mating groove 521.

[0101] In order to further facilitate the locking block 401 to automatically enter the matching groove 521, as a preferred embodiment of the present utility model, Figure 7 As shown, the thickness of the locking member 520 gradually decreases near the edge, and a second matching inclined surface a2 is formed at the edge of the locking surface.

[0102] As an optional embodiment of the utility model, the storage assembly also includes a stop structure 540, the mounting seat 510 has at least one through guide avoidance hole, the locking member 520 has at least one guide column 523, the end of the guide column 523 away from the locking member 520 passes through the guide avoidance hole and is fixedly connected to the stop structure 540, and the elastic member 530 is used to drive the stop structure 540 away from the mounting seat 510 through elastic force, so as to drive the locking member 520 on the other side of the mounting seat 510 close to the mounting seat 510 through the guide column 523.

[0103] As an alternative embodiment of the present utility model, the guiding post 523 is located at the bottom of the mating groove 521.

[0104] As an alternative embodiment of the present utility model, the elastic member 530 is a spring. The elastic member 530 is sleeved on the guiding post 523. The stop structure 540 includes at least one locking screw. The locking screw is screwed into the guiding post 523. The elastic member 530 drives the head of the locking screw away from the mounting seat 510 by elastic force to drive the locking member 520 closer to the mounting seat 510.

[0105] As an alternative embodiment of the present utility model, as Figure 7 shown, one side of the mounting seat 510 facing away from the locking member 520 has at least one mounting groove for accommodating the end of the fixed vertical rod 111. The guiding and avoiding hole is located at the bottom of the mounting groove.

[0106] As an alternative embodiment of the present utility model, as Figure 7 shown, one side of the mounting seat 510 facing away from the locking member 520 has at least one mounting sleeve 511, and the mounting groove is formed in the mounting sleeve 511.

[0107] As an alternative embodiment of the present utility model, as Figure 2 、 Figure 7 shown, the mounting seat 510 further has at least one first hinge portion 512 for hinging with one of the pair of cross bars 120 of the loading vehicle; as Figure 3 、 Figure 8 shown, the locking member 400 includes a locking mounting sleeve 410 and a second hinge portion 420 provided on the locking mounting sleeve 410. The locking mounting sleeve 410 is used for sleeving and fixing on the vertical rod 111, and the second hinge portion 420 is used for hinging with the other of the pair of cross bars 120 of the loading vehicle.

[0108] As an alternative embodiment of the present utility model, the first hinge portion 512 includes a pair of spaced first hinge plates. A first hinge hole is formed in the first hinge plate. The cross bar 120 is hingedly connected to the first hinge portion 512 through a fastener passing through the first hinge hole and a connection through hole on the cross bar 120.

[0109] As an alternative embodiment of the present utility model, as Figure 3 、 Figure 8 shown, the locking block 401 is provided on the second hinge portion 420.

[0110] To further improve the adjustability of the internal volume of the loading vehicle, as a preferred embodiment of the present utility model, at least part of the inside of the vertical rod 111 has a hollow mating hole. As Figure 1As shown, the loading vehicle further includes a plurality of extension bars 300. The extension bar 300 includes a retaining portion 310 and a plurality of insertion rods 320. The top end of the insertion rod 320 is fixedly connected to the retaining portion 310, and the bottom end of the insertion rod 320 is inserted into the hollow mating hole so that the height of the retaining portion 310 is adjustable relative to the outer frame rod group 110;

[0111] As an alternative embodiment of the present invention, as Figure 1 , Figure 3 , Figure 8 , Figure 9 shown, the locking member 400 further includes an extension button 430, a fixing pin 440, and an extension elastic member 450. The locking mounting sleeve 410 has a first avoidance hole communicating with its inner hole. The extension button 430 has a pressing end 431 and a driving end 432, and the extension button 430 is hinged to the locking mounting sleeve 410 at a position between the pressing end 431 and the driving end 432. One end of the fixing pin 440 is connected to the driving end 432, and the other end passes through the first avoidance hole;

[0112] The extension elastic member 450 can drive the pressing end 431 of the extension button 430 away from the inner hole of the locking mounting sleeve 410 through an elastic force, so that the driving end 432 approaches the inner hole and drives the fixing pin 440 to pass through the first avoidance hole and enter the mating pin hole on the insertion rod 320, and fixes the position of the insertion rod 320 in the hollow mating hole.

[0113] In the embodiment of the present invention, the extension button 430 adopts a lever structure. The extension elastic member 450 drives the fixing pin 440 at the driving end 432 to insert into the interior of the locking mounting sleeve 410 by lifting the pressing end 431 of the extension button 430. Thus, when the mating pin hole on the insertion rod 320 corresponds to the first avoidance hole of the locking mounting sleeve 410, as Figure 9 shown, the fixing pin 440 will automatically insert into the mating pin hole to fix the height of the insertion rod 320, and further lock the position of the extension bar 300. When it is necessary to retract the extension bar 300, the user can press the pressing end 431 of the extension button 430 to lift the driving end 432 and take out the fixing pin 440, as Figure 8 shown, to unlock the insertion rod 320, and at the same time press the extension bar 300 to retract the insertion rod 320 into the hollow mating hole of the vertical rod 111.

[0114] As an alternative embodiment of the present invention, the second hinge portion 420 includes a pair of second hinge plates arranged at intervals. An extension hinge hole is formed in the second hinge plate. The cross bar 120 is hingedly connected to the second hinge portion 420 through a fastener passing through the extension hinge hole and the connection through hole on the cross bar 120.

[0115] As an alternative embodiment of the present invention, as Figure 3As shown, the locking mounting sleeve 410 has a button groove, and the first relief hole communicates the button groove with the interior of the locking mounting sleeve 410. The expansion button 430 is disposed in the button groove, and the expansion button 430 is hinged to the side wall of the button groove.

[0116] As an alternative embodiment of the present invention, as Figure 1 shown, the storage assembly includes a pair of locking members 400. The mating groove 521 of the locking member 520 is used to cooperate with the locking blocks 401 on both sides. That is, the vertical rod 111 of the locking structure 500 can be in a folded state with the vertical rods 111 on both sides through the cooperation relationship between the locking structure 500 and the locking blocks 401 on both sides, reducing the number of the locking structures 500.

[0117] In some embodiments of the present invention, the locking members 400 and the locking structures 500 can also be respectively disposed on the expansion bars 300 on both sides. For example, they can be respectively disposed on the expansion cross beams 311, or the locking member 400 can be disposed on the adapter 312 on one side, and the locking structure 500 is integrally formed with the adapter 312 on the other side.

[0118] As an alternative embodiment of the present invention, as Figure 1 、 Figure 2 shown, the locking member 520 has a concave notch 522 along one side edge perpendicular to the extending direction of the mating groove 521 to reduce the width dimension of the locking member 520 and facilitate the user's grasping.

[0119] As an alternative embodiment of the present invention, as Figure 1 、 Figure 2 shown, the edge shape of the concave notch 522 is arc-shaped.

[0120] As an alternative embodiment of the present invention, as Figure 1 、 Figure 2 shown, a fixing ring 502 is disposed on the mounting seat 510. The fixing ring 502 is used to connect with a fixing buckle on the enclosure of the loading vehicle to connect the enclosure to the locking structure 500.

[0121] As an alternative embodiment of the present invention, as Figures 1 to 3 shown, the mounting seat 510 of the locking structure 500 has at least one first hinge portion 512. The first hinge portion 512 is hinged to the first end of one of the pair of cross bars 120; the locking member 400 includes a locking mounting sleeve 410 and a second hinge portion 420 disposed on the locking mounting sleeve 410. The locking mounting sleeve 410 is sleeved and fixed on the corresponding vertical rod 111, and the second hinge portion 420 is hinged to the first end of the other of the pair of cross bars 120.

[0122] As an alternative embodiment of the present utility model, the locking structure 500 is disposed at the top of the connection between adjacent folding units 100, and the mounting seat 510 is fixedly connected to the top end of the vertical rod 111 of the adjacent folding unit 100. That is, the two vertical rods 111 at the connection of the adjacent folding units 100 can be fixed to the same locking structure 500. By the cooperation relationship between the locking structure 500 and the locking blocks 401 on both sides, the folding units 100 on both sides can be simultaneously maintained in the folded state, reducing the number of locking structures 500.

[0123] As an alternative embodiment of the present utility model, as Figure 1 shown, the sliding hinge 112 is located below the hinge position between the vertical rod 111 and the corresponding cross rod 120. That is, the top end of the cross rod 120 is hinged to the vertical rod 111, and the bottom end of the cross rod 120 is hinged to the sliding hinge 112.

[0124] As an alternative embodiment of the present utility model, as Figure 1 shown, the top end of the cross rod 120 is hingedly connected to the top end of the vertical rod 111. For example, when the top ends of the cross rods 120 are respectively hinged to the locking structure 500 and the locking member 400, the locking structure 500 and the locking member 400 can be disposed at the top ends of the corresponding vertical rods 111.

[0125] As an alternative embodiment of the present utility model, as Figure 1 shown, a plurality of folding units 100 are sequentially connected along the vehicle length direction l, and each pair of outer frame rod groups 110 of the folding unit 100 are symmetrically disposed along the vehicle length direction l.

[0126] As an alternative embodiment of the present utility model, the loading vehicle further includes a storage pocket (not shown in the figure). The storage pocket includes a fence and a bottom sheet. The fence is disposed around the space defined by the plurality of folding units 100, and the bottom sheet is connected to the bottom of the fence and seals the bottom opening of the fence.

[0127] It is easy to understand that the fence can be fixed to the outer frame rod group 110 in various ways. For example, optionally, the top of the fence has mounting holes, and the mounting holes are sleeved on the vertical rods 111. Alternatively, the fence is provided with straps, and the fence is fixed to the outer frame rod group 110 through the straps.

[0128] Optionally, the material of the fence can be cloth.

[0129] As an alternative embodiment of the present utility model, as Figure 1 、 Figure 2 shown, a fixing ring 502 is provided on the mounting seat 510, and the fence has a plurality of fixing buckles (not shown in the figure). The fixing buckles pass through the fixing ring 502 and are connected to the fixing ring 502 to connect the fence to the locking structure 500.

[0130] As an alternative embodiment of the present utility model, the storage pocket further includes at least one partition (not shown in the figure), and the partition is disposed between the spaces defined by adjacent folding units 100 and separates the spaces defined by adjacent folding units 100.

[0131] As an alternative embodiment of the present utility model, as Figure 1 shown, the traveling wheels include at least one first traveling wheel 210 disposed on one side of the loading vehicle along the vehicle length direction l and a plurality of second traveling wheels 220 disposed on the other side of the loading vehicle along the vehicle length direction l. That is, in the embodiment of the present utility model, the traveling wheels are only disposed at both the head and the tail ends of the loading vehicle, and at least three traveling wheels are disposed in total front and back to maintain the stability of the loading vehicle.

[0132] As an alternative embodiment of the present utility model, the first traveling wheel 210 is a universal wheel and the second traveling wheel 220 is a directional wheel, or the first traveling wheel 210 is a directional wheel and the second traveling wheel 220 is a universal wheel. That is, when there is a situation where only a single traveling wheel is disposed at the head or the tail of the loading vehicle, the single traveling wheel can be a universal wheel for steering or a directional wheel.

[0133] As an alternative embodiment of the present utility model, as Figure 1 shown, the first traveling wheel 210 is a universal wheel, and the first traveling wheel 210 is disposed at the bottom end of the vertical rod 111 on one side of the loading vehicle along the vehicle length direction l.

[0134] As an alternative embodiment of the present utility model, a brake 211 is disposed on the first traveling wheel 210, and the brake 211 can stop the first traveling wheel 210 from rotating when pressed on one side and allow the first traveling wheel 210 to rotate when pressed on the other side.

[0135] As an alternative embodiment of the present utility model, as Figure 1 shown, the loading vehicle further includes a pull rod 800. One end of the pull rod 800 is hinged to the folding unit 100 at one end along the vehicle length direction l, and a pull ring 830 is disposed at the other end of the pull rod 800.

[0136] As an alternative embodiment of the present utility model, as Figure 1 shown, the pull rod 800 is hinged to the folding unit 100 provided with the universal wheel. That is, the end provided with the universal wheel is used as the head end of the loading vehicle, and the loading vehicle is steered by pulling the head of the loading vehicle.

[0137] As an alternative embodiment of the present utility model, as Figure 1 shown, the vertical rods 111 of the outer frame rod group 110 are symmetrically disposed along the vehicle width direction w, and the vehicle width direction w intersects with the vehicle length direction l.

[0138] Optionally, the vehicle width direction ww is perpendicular to the vehicle length direction ll.

[0139] In the embodiment of the present utility model, the vertical rods 111 are arranged in pairs along the vehicle width direction ww, and the folding unit 100 can be folded along the vehicle length direction ll, so that as Figure 6 , Figure 11 , Figure 12 shown, by folding the folding units 100 at different positions, the overall length of the loading vehicle along the vehicle length direction ll can be changed. As Figure 10 , Figure 13 shown, after all the folding units 100 are folded, the overall loading vehicle is folded along the vehicle length direction ll to reduce the space volume occupied by the loading vehicle during carrying and transportation.

[0140] It can be understood that only the case where the loading vehicle includes two folding units 100 is shown in the figure. In fact, the loading vehicle can include three, four, five, six or more folding units 100.

[0141] As an alternative embodiment of the present utility model, each folding unit 100 includes a pair of outer frame rod groups 110 symmetrically arranged along the vehicle length direction l. Each outer frame rod group 110 includes a pair of vertical rods 111 symmetrically arranged along the vehicle width direction w. That is, each folding unit 100 includes two pairs of vertical rods 111 spaced along the vehicle length direction ll. The rectangular space defined between the two pairs of vertical rods 111 is the storage space corresponding to the folding unit 100.

[0142] As an alternative embodiment of the present utility model, the sliding hinge 112 includes a sliding sleeve and a sliding hinge portion. The sliding sleeve is sleeved on the corresponding vertical rod 111, and the sliding hinge portion is hingedly connected to the cross rod 120.

[0143] As an alternative embodiment of the present utility model, the sliding hinge portion includes a pair of sliding hinge plates spaced along the vehicle width direction w. A sliding hinge hole is formed in the sliding hinge plate. The cross rod 120 is hingedly connected to the sliding hinge portion through a fastener passing through the sliding hinge hole and the connection through hole on the cross rod 120.

[0144] As an alternative embodiment of the present utility model, at least part of the interior of the vertical rod 111 has a hollow mating hole; as Figure 1 shown, the loading vehicle further includes a plurality of extension bars 300. The extension bar 300 includes a surrounding portion 310 and a plurality of insertion rods 320. The top end of the insertion rod 320 is fixedly connected to the surrounding portion 310, and the bottom end of the insertion rod 320 is inserted into the hollow mating hole to make the height of the surrounding portion 310 adjustable relative to the outer frame rod group 110.

[0145] As an alternative embodiment of the present utility model, as Figure 1As shown, the enclosure portion 310 includes an extended cross beam 311 extending along the vehicle width direction w and a plurality of adapters 312 . The adapters 312 are arranged in pairs at both ends of each extended cross beam 311 . The extended cross beam 311 is connected to the top ends of the plug-in rods 320 on both sides through the adapters 312 .

[0146] As an optional embodiment of the present invention, the storage pocket also includes an expansion sleeve (not shown in the figure), which is arranged around the space defined by multiple folding units 100, and the bottom opening of the expansion sleeve is connected to the top opening of the enclosure, and the top of the expansion sleeve is connected to the enclosure portion 310.

[0147] As an optional implementation of the present utility model, the expansion sleeve is made of a mesh material.

[0148] As an optional implementation of the present utility model, Figure 1 As shown, locking components 400 are fixedly provided on the vertical rods 111 at both ends along the vehicle length direction l.

[0149] As an optional implementation of the present utility model, Figure 1 As shown, the loading vehicle further includes a plurality of top cross beams 710 , and the locking components 400 on each pair of vertical rods 111 are fixedly connected via the top cross beams 710 .

[0150] As an optional implementation of the present invention, a connecting inner hole is provided at the top of one side of the top cross beam 710 of the enclosure, and the top cross beam 710 passes through the connecting inner hole in the enclosure to fix the height position of the enclosure.

[0151] As an optional implementation of the present utility model, Figure 1 , Figure 3 , Figure 8 , Figure 9 As shown, the locking component 400 includes a locking installation sleeve 410, a second hinged portion 420, an expansion button 430, a fixing pin 440 and an expansion elastic member 450. The locking installation sleeve 410 is sleeved on the vertical rod 111, the second hinged portion 420 is located on the locking installation sleeve 410, and the second hinged portion 420 is hingedly connected to the first end of the corresponding cross rod 120. The locking installation sleeve 410 has a first avoidance hole communicating with the interior thereof, the expansion button 430 has a pressing end 431 and a driving end 432, and the expansion button 430 is hingedly connected to the locking installation sleeve 410 at a position between the pressing end 431 and the driving end 432, one end of the fixing pin 440 is connected to the driving end 432, and the other end passes through the first avoidance hole;

[0152] The insertion rod 320 has at least one mating pin hole. The expansion elastic member 450 can drive the pressing end 431 of the expansion button 430 away from the vertical rod 111 through elastic force, so that the driving end 432 approaches the vertical rod 111 and drives the fixing pin 440 into the mating pin hole, and fixes the position of the insertion rod 320 in the hollow mating hole.

[0153] In the embodiment of the present utility model, the expansion button 430 adopts a lever structure. The expansion elastic member 450 drives the fixing pin 440 of the driving end 432 to insert into the interior of the locking mounting sleeve 410 by lifting the pressing end 431 of the expansion button 430. Thus, when the mating pin hole on the insertion rod 320 corresponds to the position of the first avoidance hole of the locking mounting sleeve 410, as Figure 9 shown, the fixing pin 440 will automatically insert into the mating pin hole to fix the height of the insertion rod 320, and further lock the position of the expansion bar 300. When it is necessary to retract the expansion bar 300, the user can press the pressing end 431 of the expansion button 430 to lift the driving end 432 and take out the fixing pin 440, as Figure 8 shown, to unlock the insertion rod 320. At the same time, press the expansion bar 300 to retract the insertion rod 320 into the hollow mating hole of the vertical rod 111.

[0154] As an alternative embodiment of the present utility model, the second hinge portion 420 includes a pair of second hinge plates spaced apart along the vehicle width direction w. Expansion hinge holes are formed in the second hinge plates. The cross rod 120 is hingedly connected to the second hinge portion 420 through a fastener passing through the expansion hinge holes and the connection through holes on the cross rod 120.

[0155] As an alternative embodiment of the present utility model, as Figure 8 、 Figure 9 shown, the vertical rod 111 has a second avoidance hole penetrating from the outer surface of the vertical rod 111 to the hollow mating hole. The position of the first avoidance hole corresponds to the position of the second avoidance hole, that is, the fixing pin 440 sequentially passes through the first avoidance hole of the locking mounting sleeve 410 and the second avoidance hole of the vertical rod 111 and inserts into the mating pin hole.

[0156] To improve the load capacity of the loading vehicle, as an alternative embodiment of the present utility model, as Figure 1 shown, the folding unit 100 further includes a bottom support frame 600. The bottom support frame 600 is connected between the bottom ends of the outer frame rod group 110 of the folding unit 100, and the bottom support frame 600 can be folded when the outer frame rod group 110 approaches each other, and can be unfolded when the outer frame rod group 110 moves away from each other, and is erected between the outer frame rod group 110.

[0157] As an alternative embodiment of the present utility model, as Figure 1As shown, the loading vehicle further includes a plurality of bottom cross beams 720, and the bottom ends of at least a pair of vertical rods 111 of at least one bottom support frame 610 in each folding unit 100 are fixedly connected through the bottom cross beams 720;

[0158] The bottom support frame 600 includes a bottom support frame 610 and connecting bars 620 arranged in pairs on both sides of the bottom support frame 610. The first end of the bottom support frame 610 is hinged to the bottom end of the outer frame rod group 110 on one side. The second end of the bottom support frame 610 can be placed on the corresponding bottom cross beam 720 of the outer frame rod group 110 on the opposite side when the folding unit 100 is unfolded. One end of the connecting bar 620 is hinged to the bottom end of the outer frame rod group 110 on the opposite side, and the other end of the connecting bar 620 is hinged to the part between the first end and the second end of the bottom support frame 610.

[0159] As an alternative embodiment of the present invention, as Figure 1 shown, the first traveling wheel 210 is a universal wheel. The bottom cross beam 720 corresponding to the first traveling wheel 210 has a concave portion formed by downward bending in the central area, and the pull rod 800 is hingedly connected to the concave portion.

[0160] As an alternative embodiment of the present invention, as Figure 1 shown, the loading vehicle further includes a plurality of cross beam connectors 730. The bottom ends of adjacent vertical rods 111 of adjacent folding units 100 are connected to each other through the cross beam connectors 730, and the cross beam connectors 730 on both sides are connected to each other through the bottom cross beam 720.

[0161] As an alternative embodiment of the present invention, as Figure 1 shown, the second traveling wheel 220 is a directional wheel, and the second traveling wheel 220 is arranged on the bottom cross beam 720 on one side of the loading vehicle along the vehicle length direction l.

[0162] The above are only the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes but is not limited to the content described in the drawings and the above specific embodiments. Any modification that does not deviate from the functional and structural principles of the present invention will be included in the scope of the claims.

Claims

1. A loading vehicle, characterized in that: The invention comprises at least one storage assembly, at least one folding unit and a plurality of travel wheels arranged at the bottom of the folding unit, wherein the folding unit comprises an outer frame rod group and a plurality of pairs of cross rods arranged in pairs, the outer frame rod group comprises a plurality of vertical rods, each of the vertical rods is slidably provided with at least one sliding hinge, each pair of the cross rods are cross-arranged and hinged to each other at the intersection, the first end of each pair of the cross rods is respectively hinged to the vertical rods in different outer frame rod groups, the second end of each pair of the cross rods is respectively hinged to the sliding hinges on the vertical rods in different outer frame rod groups, and the first end of one cross rod in each pair of the cross rods is connected to the second end of the other cross rod on the same vertical rod, and the pairs of the outer frame rod groups can approach or move away from each other, so that the space defined by the plurality of vertical rods can shrink or expand; The storage assembly includes a locking structure and at least one locking component, wherein the locking structure and the locking component are respectively connected to different outer frame rod groups, and the locking component can be locked and connected with the corresponding locking structure when the outer frame rod groups are close to each other.

2. The loading vehicle according to claim 1, characterized in that: The locking structure comprises a mounting seat, a locking member and an elastic member, wherein the mounting seat is connected to the corresponding outer frame rod group, the locking member has a locking surface on one side facing the mounting seat, and the locking surface has a matching groove, and the elastic member is used to drive the locking member to approach the mounting seat through elastic force; The locking component is provided with a locking block, and when the loader cart is folded, the locking block can approach the mounting seat as the outer frame rod groups approach each other until the locking block enters and is locked in the matching groove to keep the loader cart in the folded state; when the locking piece is pulled away from the mounting seat under the action of an external force, the locking piece can release the locking component in the matching groove to allow the loader cart to be unfolded.

3. The loading vehicle according to claim 2, characterized in that: The storage assembly also includes a stop structure, the mounting seat has at least one through guide avoidance hole, the locking member has at least one guide column, the end of the guide column away from the locking member passes through the guide avoidance hole and is fixedly connected to the stop structure, and the elastic member is used to drive the stop structure away from the mounting seat through elastic force, so as to drive the locking member on the other side of the mounting seat to approach the mounting seat through the guide column.

4. The loading vehicle according to claim 3, characterized in that: The elastic member is a spring, which is sleeved on the guide column. The stop structure includes at least one locking screw, which is screwed into the guide column. The elastic member drives the head of the locking screw away from the mounting seat through elastic force to drive the locking member close to the mounting seat.

5. The loading vehicle according to claim 3, characterized in that: The side of the mounting seat facing away from the locking member has at least one mounting groove, the mounting groove is used to accommodate and fix the end of the vertical rod, and the guide avoidance hole is located at the bottom of the mounting groove.

6. The loading vehicle according to any one of claims 2 to 5, characterized in that: The mounting seat also has at least one first hinged portion, which is used to be hinged with one of the cross rods arranged in pairs on the loader; the locking component includes a locking mounting sleeve and a second hinged portion arranged on the locking mounting sleeve, the locking mounting sleeve is used to be mounted on and fixed on the vertical rod, and the second hinged portion is used to be hinged with the other of the cross rods arranged in pairs on the loader.

7. The loading vehicle according to any one of claims 2 to 5, characterized in that: The storage assembly includes a pair of locking components, and the matching grooves of the locking pieces are used to match with the locking blocks of the locking components on both sides.

8. The loading vehicle according to any one of claims 2 to 5, characterized in that: The locking piece has a concave notch along a side edge perpendicular to the extending direction of the matching groove.

9. The loading vehicle according to any one of claims 2 to 5, characterized in that: The loading vehicle comprises a plurality of folding units which are connected to each other.

10. The loading vehicle according to claim 9, characterized in that: The locking structure is arranged at the top of the connection between the adjacent folding units, and the mounting seat is fixedly connected to the top of the vertical rod of the adjacent folding unit.

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