Strong-load folding vehicle

Abstract

The utility model discloses a heavy-load folding vehicle which comprises two first shear fork frames arranged in the length direction of the vehicle, supporting stand columns arranged at the two ends of the two first shear fork frames respectively, a folding bottom frame connected between the lower portions of the supporting stand columns, and suspension structures connected between the two first shear fork frames and the lower portion of the folding bottom frame respectively. The suspension structure comprises a first suspension rod, a second suspension rod, a first positioning structure arranged on the folding bottom frame and hinged to the lower end of the first suspension rod and the lower end of the second suspension rod, and a first supporting structure arranged on the first movable part and slidably connected with the first suspension rod. And the second supporting structure is arranged on the second movable part and is in sliding connection with the second suspension rod. According to the high-load folding vehicle, by arranging the suspension structure, the first shear fork frame, the supporting stand column and the folding bottom frame can be linked to jointly bear force, the bearing capacity of the whole structure of the folding vehicle is greatly improved, and practicability is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of camping folding car especially relates to a heavy load folding car. BACKGROUND

[0002] In recent years, with the improvement of people's living standards, more and more people like outdoor camping, and the carrying work of various camping articles such as camping tents, camping chairs and camping food in the outdoor camping process cannot be separated from the folding camping car.

[0003] The existing folding camping car, such as a utility model patent with the announcement number CN220974204U, mainly includes four support columns, four scissor frames connected between adjacent two support columns and a folding chassis, and an article placing area is formed around each support column, scissor frame and folding chassis. In this technical solution, only the folding chassis is used to bear the gravity of the articles in the placing area, and the bearing capacity is poor. SUMMARY

[0004] The utility model provides a heavy load folding car in view of the deficiency in the prior art, through the setting up of the suspension structure, can link first scissor frame, support column and folding chassis together to bear the stress, greatly enhance the bearing capacity of the overall structure of the folding car, and the practicality is strong.

[0005] The technical scheme adopted by the utility model is as follows: a heavy load folding car, including two first scissor frames arranged along the length direction of the car, support columns arranged at the two ends of the two first scissor frames respectively, a folding chassis connected between the lower parts of each support column, and a suspension structure connected between the lower parts of the two first scissor frames and the folding chassis respectively, wherein: the two ends of the first scissor frame are rotatably connected with the upper parts of the two support columns respectively; the first scissor frame comprises a first movable part and a second movable part that can move downward and approach each other with the folding of the first scissor frame and move upward and move away from each other with the unfolding of the first scissor frame; the suspension structure comprises a first suspension rod, a second suspension rod, a first positioning structure arranged on the folding chassis and hinged with the lower ends of the first suspension rod and the second suspension rod, a first support structure arranged on the first movable part and slidably connected with the first suspension rod, and a second support structure arranged on the second movable part and slidably connected with the second suspension rod, the upper end of the first suspension rod is provided with a first limiting piece that can be limited on the upper side of the first support structure when the first scissor frame is unfolded, and the upper end of the second suspension rod is provided with a second limiting piece that can be limited on the upper side of the second support structure when the first scissor frame is unfolded.

[0006] Preferably, the first support structure is arranged as a sleeve structure, and the first suspension rod is slidably sleeved in the first support structure; the second support structure is arranged as a sleeve structure, and the second suspension rod is slidably sleeved in the second support structure.

[0007] Preferably, the width of the first limiting member is greater than the width of the first suspension rod, so as to form a first limiting surface on the first limiting member near one side of the first positioning structure, which is capable of abutting against the upper side of the first support structure; and / or, the width of the second limiting member is greater than the width of the second suspension rod, so as to form a second limiting surface on the second limiting member near one side of the first positioning structure, which is capable of abutting against the upper side of the second support structure.

[0008] Preferably, the first support structure is arranged on one side of the lower end of the first scissor frame away from the other first scissor frame, and the second support structure is arranged on one side of the lower end of the first scissor frame away from the other first scissor frame.

[0009] Preferably, the first scissor frame comprises at least three scissor groups, each of which comprises a first scissor rod and a second scissor rod arranged in cross and hingedly connected by an intermediate hinge shaft, the upper end of the first scissor rod is hingedly connected with the upper end of the second scissor rod of the adjacent scissor group by an upper hinge shaft, or is hingedly connected with the upper part of the support stand, or is hingedly connected with the first connecting structure arranged on the upper part of the support stand, the lower end of the first scissor rod is hingedly connected with the lower end of the second scissor rod of the adjacent scissor group by a lower hinge shaft, or is hingedly connected with the second connecting structure arranged on the support stand, the first movable part is arranged on the lower hinge shaft, or is arranged on the lower end of the first scissor rod, or is arranged on the lower end of the second scissor rod, and the second movable part is arranged on the lower hinge shaft, or is arranged on the lower end of the first scissor rod, or is arranged on the lower end of the second scissor rod.

[0010] Preferably, the lower end of the first suspension rod is hingedly connected with the first positioning structure by a first hinge shaft, and the lower end of the second suspension rod is hingedly connected with the first positioning structure by a second hinge shaft, the first hinge shaft and the second hinge shaft are arranged along the vehicle width direction.

[0011] Preferably, the first positioning structure comprises a first positioning body, and a first positioning part and a second positioning part connected on opposite sides of the first positioning body along the vehicle length direction, respectively, a first positioning channel is formed on the first positioning part along the vehicle width direction, a first hinge channel is formed on the first positioning part along the vehicle width direction, the lower end of the first suspension rod penetrates through the first hinge channel, and the first suspension rod and the first positioning part are hingedly connected through the first hinge shaft in the first positioning channel and the first hinge channel, a second positioning channel is formed on the second positioning part along the vehicle width direction, a second hinge channel is formed on the second positioning part along the vehicle width direction, the lower end of the second suspension rod penetrates through the second hinge channel, and the second suspension rod and the second positioning part are hingedly connected through the second hinge shaft in the second positioning channel and the second hinge channel.

[0012] Preferably, the first positioning part comprises a first positioning plate and a first limiting plate arranged in longitudinal direction respectively, the first limiting plate is arranged in opposite interval with the first positioning plate to form a first rotating slot for the inner rotation of the lower end of the first suspension rod, the first positioning channel is provided with two corresponding channels, and the two first positioning channels are arranged on the first positioning plate and the first limiting plate respectively; and / or, the second positioning part comprises a second positioning plate and a second limiting plate arranged in longitudinal direction respectively, the second limiting plate is arranged in opposite interval with the second positioning plate to form a second rotating slot for the inner rotation of the lower end of the second suspension rod, the second positioning channel is provided with two corresponding channels, and the two second positioning channels are arranged on the second positioning plate and the second limiting plate respectively.

[0013] Preferably, the folding chassis comprises at least two converging cross groups, each of the converging cross groups comprises a converging connector and four support rods hingedly connected around the converging connector, the end of each support rod away from the converging connector is hingedly connected with the support vertical rod or the support rod of the adjacent converging cross group through the second positioning structure, when the folding chassis is folded, the converging connector moves upward while the four support rods converge into a bundle, and the first positioning structure is integrally formed with the second positioning structure connected between the adjacent two converging cross groups.

[0014] Preferably, the folding chassis further comprises two second scissors frames arranged in the direction of the vehicle width, the two ends of the two second scissors frames are rotatably connected with the upper parts of the two support vertical columns respectively; and / or, the folding chassis further comprises a pull rod structure, the lower end of the pull rod structure is rotatably connected with the lower parts of the two support vertical columns respectively; and / or, the folding chassis further comprises a wheel body assembly detachably connected with the lower end of each support vertical column.

[0015] The utility model discloses a strong load folding car, which is provided with a suspension structure connected between the two first scissor frames and the lower part of the folding chassis. When the folding car is unfolded, the first scissor frame can support the stress of the folding chassis under the pulling of the suspension structure, and the supporting column can also support the stress of the folding chassis under the pulling of the first scissor frame. Thus, the first scissor frame, the supporting column and the folding chassis can jointly bear the stress through the suspension structure, greatly enhancing the bearing capacity of the overall structure of the folding car. The first suspension rod of the suspension structure is slidably connected with the first supporting structure on the first movable part of the first scissor frame, and the second suspension rod is slidably connected with the second supporting structure on the second movable part of the first scissor frame. When the folding car is unfolded, the first limiting piece arranged on the upper end of the first suspension rod can limit the first suspension rod on the upper side of the first supporting structure, and the second limiting piece arranged on the upper end of the second suspension rod can limit the second suspension rod on the upper side of the second supporting structure. Thus, the first suspension rod and the second suspension rod can be supported on the upper sides of the first supporting structure and the second supporting structure, respectively. When the folding chassis moves downward under stress, the first suspension rod and the second suspension rod can be pulled to prevent the folding chassis from moving downward, thereby enhancing the bearing capacity of the overall structure of the folding car. Since the two sides of the folding chassis are connected with the first movable part and the second movable part on the first scissor frame through the first suspension rod and the second suspension rod, the first movable part and the second movable part can be driven downward by the first suspension rod and the second suspension rod to provide a force for driving the first scissor frame to deform to the folding state when the folding chassis moves downward under stress. Thus, the supporting column rotatably connected with the two ends of the first scissor frame can jointly bear the stress of the folding chassis. In addition, the first suspension rod can slide along the first supporting structure, and the second suspension rod can slide along the second supporting structure. Thus, the suspension structure does not need to be disassembled and assembled every time the folding car is folded or unfolded, facilitating the quick folding or unfolding of the folding car.

[0016] The additional aspects and advantages of the utility model will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings described herein are used to provide further understanding of the utility model and constitute a part of the application. The schematic embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute improper limitation on the utility model. In the drawings:

[0018] Figure 1 It is a three-dimensional structure schematic view of the strong load folding car of an embodiment of the utility model.

[0019] Figure 2 Figure 2 is a side view structural schematic diagram of the strong load folding vehicle of one embodiment of the present application.

[0020] Figure 3 Figure 3 is an exploded structural schematic diagram of the strong load folding vehicle of one embodiment of the present application.

[0021] Figure 4 Figure 4 is a partial structural schematic diagram of the strong load folding vehicle of one embodiment of the present application.

[0022] Figure 5 Figure 5 is a folding state structural schematic diagram of the strong load folding vehicle of one embodiment of the present application. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the embodiments of the present application will be described clearly and completely below in combination with the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the described embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without any creative effort fall within the scope of protection of the present application.

[0024] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, 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 on the present application.

[0025] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or can be the communication between two elements inside. Those of ordinary skill in the art can understand the specific meaning of the above terms in the present application according to the specific circumstances.

[0026] In the utility model, unless another definite provision and limit, first feature is "on" or "under" second feature can include that first and second features are direct contact, also can include that first and second features are not direct contact, but contact through other feature between them. Moreover, first feature "on", "above" and "on" second feature include that first feature is directly above and obliquely above second feature, or just indicate that horizontal height of first feature is higher than second feature. First feature "under", "below" and "under" second feature include that first feature is directly below and obliquely below second feature, or just indicate that horizontal height of first feature is less than second feature.

[0027] Unless otherwise defined, technical terms or scientific terms used herein should be understood as having the common meaning in the field of the utility model. The "first", "second" and similar words used in the utility model patent application specification and claims do not represent any order, quantity or importance, but are used to distinguish different components. Similarly, "one" or "a" and similar words do not represent quantity limitation, but represent the existence of at least one.

[0028] As Figures 1-5As shown, as an embodiment of the utility model provides a kind of strong load folding car, with car length direction and car width direction, strong load folding car includes two first scissor fork 1 being arranged along car length direction, support column 4 being respectively arranged at two ends of two first scissor fork 1, folding chassis 3 being connected between the lower part of each support column 4, and respectively connecting between two first scissor fork 1 and the lower part of folding chassis 3 suspension structure 5.Wherein, the upper portion of two support columns 4 is rotatably connected with the two ends of first scissor fork 1 respectively.First scissor fork 1 includes first movable part 101 and second movable part 102, which can move downward and approach each other with the folding of first scissor fork 1, and move upward and away from each other with the unfolding of first scissor fork 1.Suspension structure 5 includes first suspension rod 51, second suspension rod 52, first positioning structure 53 arranged on folding chassis 3 and hinged with the lower end of first suspension rod 51 and second suspension rod 52, first support structure 54 arranged on first movable part 101 and slidingly connected with first suspension rod 51, and second support structure 55 arranged on second movable part 102 and slidingly connected with second suspension rod 52, the upper end of first suspension rod 51 is provided with first limiting piece 511, which can be limited on the upper side of first support structure 54 when first scissor fork 1 unfolds, and the upper end of second suspension rod 52 is provided with second limiting piece 521, which can be limited on the upper side of second support structure 55 when first scissor fork 1 unfolds.The strong load folding vehicle of the embodiment is provided with the suspension structure 5 connected between the two first scissor frames 1 and the lower part of the folding chassis 3, so that after the folding vehicle is unfolded, the first scissor frame 1 can support the stress of the folding chassis 3 under the pulling of the suspension structure 5, and the support column 4 can support the stress of the folding chassis 3 under the pulling of the first scissor frame 1, so that the first scissor frame 1, the support column 4 and the folding chassis 3 can jointly bear the stress through the linkage of the suspension structure 5, greatly enhancing the load-bearing capacity of the overall structure of the folding vehicle and having strong practicability; the first suspension rod 51 of the suspension structure 5 is slidingly connected with the first support structure 54 arranged on the first movable part 101 of the first scissor frame 1, and the second suspension rod 52 is slidingly connected with the second support structure 55 arranged on the second movable part 102 of the first scissor frame 1, so that when the folding vehicle is in the unfolded state, the first suspension rod 51 and the second suspension rod 52 can be respectively supported on the upper side of the first support structure 54 and the second support structure 55 through the first limiting piece 511 arranged on the upper end of the first suspension rod 51 and limiting on the upper side of the first support structure 54, and the second limiting piece 521 arranged on the upper end of the second suspension rod 52 and limiting on the upper side of the second support structure 55, so that when the folding chassis 3 moves downward under stress, the first scissor frame 1 and the support column 4 can prevent the folding chassis 3 from moving downward by pulling the first suspension rod 51 and the second suspension rod 52, thereby enhancing the load-bearing capacity of the overall structure of the folding vehicle; and since the two sides of the folding chassis 3 are respectively connected with the first movable part 101 and the second movable part 102 on the first scissor frame 1 through the first suspension rod 51 and the second suspension rod 52, the first movable part 101 and the second movable part 102 can move downward under stress to provide a force driving the first scissor frame 1 to deform to the folding state when the folding chassis 3 moves downward under stress, thereby being more conducive to jointly bearing the stress of the folding chassis 3 with the support column 4 rotatably connected with the two ends of the first scissor frame 1; meanwhile, since the first suspension rod 51 can slide along the first support structure 54 and the second suspension rod 52 can slide along the second support structure 55 during the folding or unfolding of the folding vehicle, the suspension structure 5 does not need to be separately assembled or disassembled every time the folding vehicle is folded or unfolded, thereby facilitating the rapid folding or unfolding of the folding vehicle.

[0029] As Figure 1 , Figure 5As shown in the drawings, in some specific embodiments, the first support structure 54 is arranged as a sleeve structure, the first suspension rod 51 is sleeved in the first support structure 54, the second support structure 55 is arranged as a sleeve structure, and the second suspension rod 52 is sleeved in the second support structure 55, which is simple in structure and stable in connection. In other embodiments, other sliding connection structures can be used between the first support structure 54 and the first suspension rod 51 or between the second support structure 55 and the first suspension rod 52.

[0030] As shown in the drawings, Figure 2 , Figure 3 in some specific embodiments, the width of the first limiting piece 511 is greater than the width of the first suspension rod 51, so as to form a first limiting surface 5111 on the first limiting piece 511 close to one side of the first positioning structure 53, which can abut against the upper side of the first support structure 54, and the mutual surface-to-surface contact between the first limiting surface 5111 and the upper side of the first support structure 54 can limit the position, which is good in stability. The width of the second limiting piece 521 is greater than the width of the second suspension rod 52, so as to form a second limiting surface 5211 on the second limiting piece 521 close to one side of the first positioning structure 53, which can abut against the upper side of the second support structure 55, and the mutual surface-to-surface contact between the second limiting surface 5211 and the upper side of the second support structure 55 can limit the position, which is good in stability. In the embodiment, the first limiting piece 511 and the first suspension rod 51 are arranged in detachable connection, and the second limiting piece 521 and the second suspension rod 52 are arranged in detachable connection, which facilitates assembly. In other embodiments, the first limiting piece 511 and the first suspension rod 51 can be arranged in fixed connection or one-piece structure, or the second limiting piece 521 and the second suspension rod 52 can be arranged in fixed connection or one-piece structure, so as to improve the stability of the structure.

[0031] As shown in the drawings, Figure 3 in some specific embodiments, the first support structure 54 is arranged at the lower end of the first scissor frame 1 away from the other first scissor frame 1, and the second support structure 55 is arranged at the lower end of the first scissor frame 1 away from the other first scissor frame 1, so that the suspension structure 5 can be arranged in layers outside the first scissor frame 1 in the folded state of the folding vehicle, which is convenient for folding and storage.

[0032] As shown in the drawings, Figure 3As shown, in some embodiments, the first scissor frame 1 comprises three scissor groups, each of which comprises a first scissor rod 11 and a second scissor rod 12 arranged crosswise to each other and hinged to each other by a middle hinge shaft 61, the upper end of the first scissor rod 11 is hinged to the upper end of the second scissor rod 12 of the adjacent scissor group by an upper hinge shaft 62, or is hinged to a first connecting structure 71 positioned at the upper part of the support column 4; the lower end of the first scissor rod 11 is hinged to the lower end of the second scissor rod 12 of the adjacent scissor group by a lower hinge shaft 63, or is hinged to a second connecting structure 72 slidingly arranged on the support column 4; the upper end of the second scissor rod 12 is hinged to the upper end of the first scissor rod 11 of the adjacent scissor group by an upper hinge shaft 62, or is hinged to a first connecting structure 71 positioned at the upper part of the support column 4; the lower end of the second scissor rod 12 is hinged to the lower end of the first scissor rod 11 of the adjacent scissor group by a lower hinge shaft 63, or is hinged to a second connecting structure 72 slidingly arranged on the support column 4, so that during the unfolding or folding of the first scissor frame 1, each scissor rod is rotated along the hinge shaft between each scissor rod and the support column 4, and simultaneously slides up and down along the support column 4 through the second connecting structure 72. In other embodiments, the upper end of the first scissor rod 11 or the second scissor rod 12 can also be directly hinged to the upper part of the support column 4, and the first scissor frame 1 can also be arranged to comprise four, five or even more scissor groups, and the first scissor frame 1, the support column 4 and the folding base frame 3 can also be connected by the suspension structure 5 to bear force together.

[0033] In some embodiments, each first scissor rod 11 is arranged on each second scissor rod 12 close to one side of the other first scissor frame 1, the first movable part 101 and the second movable part 102 are arranged in the middle region of the first scissor frame 1 and are respectively arranged on the lower end of two adjacent second scissor rods 12 away from the other first scissor frame 1, are rotatably connected to the second scissor rod 12 through the lower hinge shaft 63 connected between the lower end of the first scissor rod 11 and the second scissor rod 12, are conveniently changed in direction to adapt to the change in direction of the second scissor rod 12, the first suspension rod 51 and the second suspension rod 52 during the unfolding or folding of the folding vehicle, to match the direction of the first suspension rod 51 and the second suspension rod 52, to facilitate smooth sliding of the first suspension rod 51 along the first support structure 54 and smooth sliding of the second suspension rod 52 along the second support structure 55. In other embodiments, each first scissor rod 11 can also be arranged on each second scissor rod 12 away from the other first scissor frame 1, the first movable part 101 and the second movable part 102 can also be respectively arranged on the lower end of two adjacent first scissor rods 11 away from the other first scissor frame 1, or can be arranged on the lower hinge shaft 63, and the first support structure 54 or the second support structure 55 can also be arranged to be fixedly connected or integrally formed with the second scissor rod 12.

[0034] In some specific embodiments, the lower end of the first suspension rod 51 is hingedly connected to the first positioning structure 53 through a first hinge shaft 64, and the lower end of the second suspension rod 52 is hingedly connected to the first positioning structure 53 through a second hinge shaft 65. The first hinge shaft 64 and the second hinge shaft 65 are arranged along the vehicle width direction, so that the first suspension rod 51 can swing along the vehicle length direction about the axis of the first hinge shaft 64, and the second suspension rod 52 can swing along the vehicle length direction about the axis of the second hinge shaft 65, so that the suspension structure 5 can be folded with the folding of the first scissor frame 1 and unfolded with the unfolding of the first scissor frame 1.

[0035] As shown in Figure 4 In some specific embodiments, the first positioning structure 53 includes a first positioning body 530, and a first positioning part 531 and a second positioning part 532 connected to opposite sides of the first positioning body 530 along the vehicle length direction, respectively. The first positioning part 531 is provided with a first positioning passage 5310 along the vehicle width direction, and the lower end of the first suspension rod 51 is provided with a first hinge passage 512 along the vehicle width direction. The first suspension rod 51 and the first positioning part 531 are hingedly connected through the first hinge shaft 64 fitted in the first positioning passage 5310 and the first hinge passage 512. The second positioning part 532 is provided with a second positioning passage 5320 along the vehicle width direction, and the lower end of the second suspension rod 52 is provided with a second hinge passage 522 along the vehicle width direction. The second suspension rod 52 and the second positioning part 532 are hingedly connected through the second hinge shaft 65 fitted in the second positioning passage 5320 and the second hinge passage 522.

[0036] In some specific embodiments, the intermediate hinge shaft 61, the upper hinge shaft 62, the lower hinge shaft 63, the first hinge shaft 64, or the second hinge shaft 65 is provided as a connecting structure such as a screw, a bolt, or a rivet.

[0037] In some embodiments, the first positioning part 531 comprises a first positioning plate 5311 and a first limiting plate 5312 arranged in the longitudinal direction respectively, the first limiting plate 5312 is arranged in opposite spacing with the first positioning plate 5311 to form a first rotating slot for the lower end of the first suspension rod 51 to rotate in, the first positioning channel 5310 is provided with two corresponding, the two first positioning channels 5310 are arranged on the first positioning plate 5311 and the first limiting plate 5312 respectively, and are used for positioning the two ends of the first hinged shaft 64 respectively, the lower end of the first suspension rod 51 is arranged in the first rotating slot and is limited between the first positioning plate 5311 and the first limiting plate 5312, which is beneficial to the stable rotation of the first suspension rod 51 relative to the first positioning part 531. The second positioning part 532 comprises a second positioning plate 5321 and a second limiting plate 5322 arranged in the longitudinal direction respectively, the second limiting plate 5322 is arranged in opposite spacing with the second positioning plate 5321 to form a second rotating slot for the lower end of the second suspension rod 52 to rotate in, the second positioning channel 5320 is provided with two corresponding, the two second positioning channels 5320 are arranged on the second positioning plate 5321 and the second limiting plate 5322 respectively, and are used for positioning the two ends of the second hinged shaft 65 respectively, the lower end of the second suspension rod 52 is arranged in the second rotating slot and is limited between the second positioning plate 5321 and the second limiting plate 5322, which is beneficial to the stable rotation of the second suspension rod 52 relative to the second positioning part 532.

[0038] As shown in Figure 3 In some embodiments, the folding chassis 3 comprises two converging cross groups, each of which comprises a converging connector 31 and four support rods 32 hinged around the converging connector 31, and the end of each support rod 32 away from the converging connector 31 is hinged to the support vertical rod 4 or the support rod 32 of the adjacent converging cross group through the second positioning structure 73, when the folding chassis 3 is folded, the converging connector 31 moves upward while the four support rods 32 converge into a bundle, so that the folding vehicle is folded into a bundle, reducing the space occupation, and facilitating packaging, carrying or transportation. In other embodiments, the folding chassis 3 can also be provided with three, four or more converging cross groups.

[0039] As shown in Figure 4 In some embodiments, the first positioning structure 53 is integrally formed with the second positioning structure 73 connected between the adjacent two converging cross assemblies, which simplifies the structure and facilitates assembly.

[0040] As shown in Figure 3As shown in the drawings, in some embodiments, two second scissor frames 2 arranged along the vehicle width direction are further included, and two ends of the two second scissor frames 2 are rotatably connected with upper portions of the two support columns 4, respectively. The second scissor frame 2 includes a third scissor rod 21 and a fourth scissor rod 22 which are arranged to cross each other and are hingedly connected with each other through a middle hinge shaft 61. An upper end of the third scissor rod 21 is hingedly connected with an upper end of the fourth scissor rod 22 of an adjacent scissor group through an upper hinge shaft 62, or is hingedly connected with a first connecting structure 71 which is positioned on the upper portion of the support column 4. A lower end of the third scissor rod 21 is hingedly connected with a lower end of the fourth scissor rod 22 of the adjacent scissor group through a lower hinge shaft 63, or is hingedly connected with a second connecting structure 72 which is slidingly arranged on the support column 4. An upper end of the fourth scissor rod 22 is hingedly connected with an upper end of the third scissor rod 21 of the adjacent scissor group through the upper hinge shaft 62, or is hingedly connected with the first connecting structure 71 which is positioned on the upper portion of the support column 4. A lower end of the fourth scissor rod 22 is hingedly connected with a lower end of the third scissor rod 21 of the adjacent scissor group through the lower hinge shaft 63, or is hingedly connected with the second connecting structure 72 which is slidingly arranged on the support column 4. In the process of unfolding or folding the second scissor frame 2, each scissor rod is rotated along each hinge shaft, and each scissor rod and the support column 4 are slidingly moved up and down along the support column 4 through the second connecting structure 72. In the present embodiment, the two support columns 4 on both sides of the second scissor frame 2 can pull the second scissor frame 2 through the linkage of the first scissor frame 1 to provide a force to drive the second scissor frame 2 to deform towards the folded state, so that the first scissor frame 1, the second scissor frame 2, the support column 4 and the folding chassis 3 can jointly bear the stress through the linkage of the suspension structure 5, and the load-bearing capacity of the overall structure of the folding vehicle is further enhanced.

[0041] As shown in the drawings, Figure 1 In some embodiments, a pull rod structure 8 is further included, and lower ends of the pull rod structure 8 are rotatably connected with lower portions of the two support columns 4, respectively, so as to facilitate pulling the folding vehicle to walk from different angles and to be suitable for people of different heights. The pull rod structure 8 is provided as a telescopic adjusting structure, can be telescoped and folded, reduces the overall volume of the folded folding vehicle, and is convenient for storage.

[0042] As shown in the drawings, Figure 1 In some embodiments, a wheel assembly 9 is further included, which is detachably connected with lower ends of each support column 4, respectively. The wheel assembly 9 is used to drive the folding vehicle to roll and walk. The wheel assembly 9 is detachably connected with the support column 4, so as to facilitate separate replacement or maintenance of the wheel assembly 9.

[0043] Finally, it should be noted that the above examples are used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can still be modified, or some technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

[0044] In summary, the above is only a preferred embodiment of the present application, and any changes and modifications made within the scope of the present application should be included in the scope of the present application.

Claims

1. A heavy duty folding vehicle, characterized by, The system includes two first scissor lifts arranged along the length of the vehicle, support columns respectively arranged at both ends of the two first scissor lifts, a folding base frame connected between the lower parts of each support column, and a suspension structure respectively connected between the two first scissor lifts and the lower part of the folding base frame, wherein: The two ends of the first scissor lift are rotatably connected to the upper parts of the two supporting columns, respectively. The first scissor lift includes a first movable part and a second movable part that can move downward and move closer together as the first scissor lift is folded, and move upward and move away from each other as the first scissor lift is unfolded. The suspension structure includes a first suspension rod, a second suspension rod, a first positioning structure mounted on a folding base and hinged to the lower ends of the first and second suspension rods, a first support structure mounted on a first movable part and slidably connected to the first suspension rod, and a second support structure mounted on a second movable part and slidably connected to the second suspension rod. The upper end of the first suspension rod is provided with a first limiting member that can limit the first scissor lift to the upper side of the first support structure when the first scissor lift is deployed, and the upper end of the second suspension rod is provided with a second limiting member that can limit the first scissor lift to the upper side of the second support structure when the first scissor lift is deployed.

2. The heavy duty folding vehicle of claim 1, wherein: The first support structure is configured as a sleeve structure, and the first suspension rod is slidably sleeved inside the first support structure; The second support structure is configured as a sleeve structure, and the second suspension rod is slidably sleeved within the second support structure.

3. The heavy duty folding vehicle of claim 2, wherein: The width of the first limiting member is greater than the width of the first suspension rod, so that a first limiting surface is formed on the side of the first limiting member near the first positioning structure, which can abut against the upper side of the first support structure; and / or, The width of the second limiting member is greater than the width of the second suspension rod, so that a second limiting surface is formed on the side of the second limiting member near the first positioning structure, which can abut against the upper side of the second support structure.

4. The heavy duty folding vehicle of claim 3, wherein: The first support structure is arranged on the side of the lower end of the first scissor lift away from the other first scissor lift, and the second support structure is arranged on the side of the lower end of the first scissor lift away from the other first scissor lift.

5. The heavy duty folding vehicle of claim 1, wherein: The first scissor lift includes at least three scissor lift groups. Each scissor lift group includes a first scissor lift and a second scissor lift arranged intersecting each other and hinged to each other via a central hinge axis. The upper end of the first scissor lift is hinged to the upper end of the second scissor lift of the adjacent scissor lift group via an upper hinge axis, or hinged to the upper part of the support column, or hinged to a first connecting structure positioned on the upper part of the support column. The lower end of the first scissor lift is hinged to the lower end of the second scissor lift of the adjacent scissor lift group via a lower hinge axis, or hinged to a second connecting structure slidably mounted on the support column. The first movable part is disposed on the lower hinge shaft, or at the lower end of the first scissor bar, or at the lower end of the second scissor bar; the second movable part is disposed on the lower hinge shaft, or at the lower end of the first scissor bar, or at the lower end of the second scissor bar.

6. The heavy duty folding vehicle of any one of claims 1-5, wherein: The lower end of the first suspension rod is hinged to the first positioning structure via a first hinge shaft, and the lower end of the second suspension rod is hinged to the first positioning structure via a second hinge shaft. The first and second hinge shafts are arranged along the vehicle width direction.

7. The heavy duty folding vehicle of claim 6, wherein: The first positioning structure comprises a first positioning body, a first positioning part and a second positioning part connected to opposite sides of the first positioning body along the length direction of the vehicle, a first positioning channel is formed on the first positioning part along the width direction of the vehicle, a first hinged channel is formed on the lower end of the first suspension rod along the width direction of the vehicle, and the first suspension rod is hinged with the first positioning part through a first hinge shaft in the first positioning channel and the first hinged channel. A second positioning channel is formed on the second positioning part along the width direction of the vehicle, a second hinged channel is formed on the lower end of the second suspension rod along the width direction of the vehicle, and the second suspension rod is hinged with the second positioning part through a second hinge shaft in the second positioning channel and the second hinged channel.

8. The heavy duty folding vehicle of claim 7, wherein: The first positioning part comprises a first positioning plate and a first limiting plate arranged along the longitudinal direction, the first limiting plate is arranged in opposite and spaced relation with the first positioning plate to form a first rotating groove for the lower end of the first suspension rod to rotate in, and two first positioning channels are formed corresponding to the first positioning plate and the first limiting plate. The second positioning part comprises a second positioning plate and a second limiting plate arranged along the longitudinal direction, the second limiting plate is arranged in opposite and spaced relation with the second positioning plate to form a second rotating groove for the lower end of the second suspension rod to rotate in, and two second positioning channels are formed corresponding to the second positioning plate and the second limiting plate.

9. The heavy duty folding vehicle of claim 5, wherein: The folding chassis comprises at least two converging cross assemblies, each converging cross assembly comprises a converging connector and four support rods hinged around the converging connector, the ends of the four support rods away from the converging connector are hinged with the support vertical rods or the support rods of the adjacent converging cross assembly through the second positioning structure, and the converging connector moves upward while the four support rods converge into a bundle when the folding chassis is folded. The first positioning structure is integrally formed with the second positioning structure connected between the adjacent two converging cross assemblies.

10. The heavy duty folding vehicle of claim 9, wherein: Two second scissors frames are arranged along the width direction of the vehicle, and the two ends of the two second scissors frames are rotatably connected with the upper parts of the two support vertical columns. A pull rod structure is further included, and the lower ends of the pull rod structure are rotatably connected with the lower parts of the two support vertical columns. Wheel body assemblies are further included, and the wheel body assemblies are detachably connected with the lower ends of the support vertical columns.

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