Transfer trolley

Abstract

According to the transfer trolley, a trolley frame is ingeniously arranged to be in the form that the trolley frame can be folded or unfolded in the width direction, so that when the transfer trolley is used, the transfer trolley can be unfolded to be used conveniently, when the transfer trolley does not need to be used, the transfer trolley can be folded to be stored conveniently, in addition, a supporting frame is conveniently connected through an installation assembly, and the transfer trolley is convenient to use. According to the technical scheme, the supporting frame can be well matched with the frame no matter the supporting frame is in a detachable or foldable structural form, meanwhile, the storage assembly and the supporting frame between the storage assembly and the supporting frame can be conveniently disassembled and assembled, and the transfer trolley has the advantages of being flexible and convenient to use, convenient to store and reliable in structure.

Description

Technical Field

[0001] The utility model relates to the field of transfer devices, in particular to a transfer vehicle. Background Art

[0002] As an important auxiliary tool for transferring items indoors and outdoors, the transfer cart can provide users with labor-saving, time-saving and efficient transfer assistance when transferring heavy or multiple items. However, for general daily use, people do not need to use the transfer cart to transfer items frequently. Therefore, how to improve the portability and compactness of the transfer cart is a topic with positive practical significance. Although there are some products that can reduce the vertical space occupied by the transfer cart by folding the pull rod, the structure of the transfer cart itself that occupies a large space is its frame. Therefore, only the folding pull rod can improve the storage convenience and reduce the vertical space occupied by the transfer cart. There is still room for improvement and expectation in terms of space occupancy, especially for some users who place the transfer vehicle in the trunk of their car for camping. For camping vehicles, they usually further add storage objects on the frame to hold the items to be transferred, such as storage boxes, storage bags, etc., which undoubtedly increases the difficulty of storage in the camping vehicle. If the frame and the support members supporting the storage components can be further structurally modified so that the transfer volume of items can be maintained during use, and at the same time, the space occupancy can be further reduced during storage, then the application of transfer vehicles and camping vehicles will be more humane and convenient. Summary of the invention

[0003] In view of this, the purpose of the utility model is to provide a transfer vehicle which is flexible and convenient to use, easy to store and has a reliable structure.

[0004] In order to achieve the above technical objectives, the technical solution adopted by the utility model is:

[0005] A transport vehicle, comprising:

[0006] Frame;

[0007] Casters, arranged at the lower part of the frame;

[0008] A pull rod connected to one end of the frame and used to pull the frame to move;

[0009] The transfer vehicle also includes:

[0010] A mounting assembly, arranged on the frame;

[0011] A support frame connected to a mounting assembly provided on the vehicle frame;

[0012] A storage assembly is arranged on the frame, and the storage assembly is connected to the support frame and is used to accommodate items to be transported.

[0013] As a possible implementation, further, the frame of this solution includes:

[0014] The support rods are a pair and are arranged horizontally opposite to each other, and the casters are connected to the lower parts of the two ends of the support rods;

[0015] A connecting assembly is respectively connected to the pair of support rods to provide lateral support for the pair of support rods and can drive the pair of support rods to move so that the frame can be folded or unfolded along the width direction;

[0016] The connecting assembly is also connected to the mounting assembly, and the mounting assembly is provided with a limiting structure for limiting the expansion range of the frame along the width direction by the connecting assembly.

[0017] As a preferred implementation option, preferably, the installation assembly described in this solution includes:

[0018] The first connecting block is a pair and corresponds to the pair of the bracket rods one by one. One end of the first connecting block is provided with a groove and is plugged with one end of the bracket rod. The opposite sides of the pair of the first connecting blocks are provided with a rotating connecting portion of a U-shaped structure.

[0019] The second connecting blocks are a pair and correspond to the pair of the bracket rods one by one. One end of the second connecting block is provided with a groove and is plugged and matched with the other end of the bracket rod;

[0020] Wherein, the connecting assembly is rotatably connected to the rotating connecting parts of a pair of the first connecting blocks respectively, and the closed side of the rotating connecting part away from the open side of its U-shaped structure forms a limiting structure for limiting the rotational cooperation range of the connecting assembly and the rotating connecting part;

[0021] The support frame is respectively connected with the upper ends of a pair of the first connection blocks and a pair of the second connection blocks.

[0022] As one of the implementation structural forms of the support frame of the present solution, preferably, the support frame of the present solution is detachably connected to the upper ends of a pair of the first connection blocks and a pair of the second connection blocks through matching pieces, and the upper ends of the pair of the first connection blocks and the pair of the second connection blocks are provided with a tongue for matching with the matching piece, and a constraint area is formed between the tongue and the upper end surface of the first connection block or the second connection block, and the matching piece is inserted into the constraint area and detachably matched with the tongue; the support frame comprises:

[0023] The first connecting frame is a pair of first connecting rods that are relatively arranged at the two ends of a pair of support rods of the frame, wherein the first connecting frame includes a pair of first connecting rods that are rotatably connected in a scissor-like manner, wherein the lower ends of the pair of first connecting rods of one first connecting frame are detachably connected with the tongues at the upper ends of a pair of first connecting blocks connected to one end of the pair of support rods through a matching piece, and the lower ends of the pair of first connecting rods of the other first connecting frame are detachably connected with the tongues at the upper ends of a pair of second connecting blocks connected to the other ends of the pair of support rods through a matching piece;

[0024] A pair of second connecting rods are arranged parallel to each other between a pair of first connecting frames, and both ends of the pair of second connecting rods are respectively fixedly connected to the upper ends of the pair of first connecting rods of the first connecting frame;

[0025] The pair of second connecting rods and the pair of first connecting frames together form a constrained space for arranging a storage assembly, and the storage assembly is connected to the pair of second connecting rods.

[0026] As a preferred implementation option, preferably, the matching piece described in this solution includes:

[0027] The mounting sleeve is a cylindrical shell structure adapted to the end of the first connecting rod. The end of the first connecting rod is inserted into the cylindrical shell of the mounting sleeve. The mounting sleeve is provided with an extension portion for being inserted into the constraint area and detachably connected with a latch. The end of the extension portion is also provided with an upwardly folded bending portion, which cooperates with the latch to prevent the mounting sleeve from escaping from the constraint area in a first direction. The first direction is perpendicular to or forms an angle with the direction in which the extension portion is inserted into the constraint area.

[0028] As a preferred implementation option, preferably, in this solution, the upper end surface of the first connecting block or the second connecting block is also provided with a guide groove for guiding the extension part to be inserted into the constraint area, and the lower end surface of the extension part is provided with a guide protrusion corresponding to the guide groove.

[0029] As another implementation structure of the support frame of this solution, preferably, the support frame of this solution includes:

[0030] The support rods are in two pairs and correspond to a pair of first connection blocks and a pair of second connection blocks respectively. The upper ends of the pair of first connection blocks and the pair of second connection blocks are provided with rotating connection seats. One end of the two pairs of support rods is rotatably connected to the corresponding rotating connection seats at the upper ends of the first connection blocks or the second connection blocks through rotating pins respectively. The support rods have a supporting state and a folding state. In the supporting state, the other end of the support rod is turned upward around the rotating pin to be perpendicular to the support rod. In the folding state, the other end of the support rod is folded downward to be attached to the support rod.

[0031] A pair of cross bars, one of which is connected to the other end of a pair of support bars connected to a pair of first connecting blocks, and the other cross bar is connected to the other end of a pair of support bars connected to a pair of second connecting blocks;

[0032] When the two pairs of support rods are in a supporting state, the two pairs of support rods enclose a constrained space for arranging a storage assembly, and the storage assembly is connected to the support rods or a cross bar connected thereto.

[0033] As a preferred implementation option, preferably, the frame of this solution also includes:

[0034] There are multiple supporting ribs, all of which are straddled on a pair of the support rods. Both ends of the supporting ribs are provided with clamping parts fixedly matched with the pair of the support rods.

[0035] As a preferred implementation option, preferably, the connection assembly described in this solution includes:

[0036] A first traction rod is a pair and corresponds to a pair of the first connection blocks one by one, one end of the first traction rod is inserted into the rotation connection part of the corresponding first connection block and is rotationally connected in the rotation connection part, and the other side of the rotation connection part away from the open side of the U-shaped structure forms a limit structure for limiting the rotation of the first traction rod;

[0037] A connecting seat is arranged between a pair of the first traction rods, and the other ends of the pair of the first traction rods are respectively rotatably connected to the connecting seat; one end of the pull rod is connected to the connecting seat through a rotating member, and the other end of the pull rod can be turned upward or downward around the end of the pull rod rotatably connected to the connecting seat;

[0038] The scissor rods are a pair and the middle part is rotatably connected in a scissor-like manner. The pair of scissor rods are arranged between the pair of support rods, and one end of the pair of scissor rods is rotatably connected to the other end of the pair of support rods respectively, and the other end of the pair of scissor rods is relatively movably connected to the two ends of the pair of support rods respectively through movable connecting pieces;

[0039] Wherein, the movable connecting member is a guide rod, and guide grooves are provided between the two ends of a pair of support rods, and the other ends of a pair of scissor rods are slidably connected to the guide grooves through the guide rod.

[0040] As a preferred implementation option, preferably, the frame of the present solution further includes a support cloth, which is a multi-layer fabric structure, and a plurality of support ribs are transversely inserted in the support cloth, and the two ends are exposed outside the support cloth;

[0041] There are two pairs of casters, which correspond one to one with one pair of the first connecting blocks and one to one with one pair of the second connecting blocks, and the casters are connected to the first connecting blocks or the second connecting blocks through caster mounting parts;

[0042] The storage component is a storage bag or a storage box, the upper end of which is connected to the support frame and is used to accommodate items to be transported; the lower end of the storage bag or the storage box is in contact with the frame or forms a gap or is connected through a binding piece or is buckled on the support rod through a U-shaped structure connection buckle.

[0043] By adopting the above-mentioned technical scheme, the utility model has the following beneficial effects compared with the prior art: the scheme cleverly arranges the frame to be foldable or unfoldable along the width direction, so that the transfer vehicle can be unfolded for convenient use when in use, and can be folded for convenient storage when not in use. In addition, the scheme also facilitates the connection of the support frame through the installation component, so that the support frame can be well matched with the frame regardless of whether it is a detachable or foldable structural form. At the same time, the storage component and the support frame can also be conveniently disassembled and installed, so that the transfer vehicle of this scheme has the advantages of flexible and convenient use, easy storage and reliable structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0045] Figure 1 It is a schematic diagram of the simplified implementation structure of Example 1 of the present scheme and a schematic diagram of some of its partial structures;

[0046] Figure 2 This is one of the implementation diagrams of the frame, support frame and mounting assembly, pull rod, casters and other parts of the transfer vehicle of Example 1 of this solution;

[0047] Figure 3 This is the second schematic diagram of the implementation of the transfer vehicle frame, support frame and mounting components, pull rods, casters and other parts of the embodiment 1 of the present solution;

[0048] Figure 4 This is the third schematic diagram of the implementation of the transfer vehicle frame, support frame and mounting components, pull rods, casters and other parts of the embodiment 1 of the present solution;

[0049] Figure 5It is a schematic diagram of the support ribs of the transfer vehicle of Example 1 of the present solution being implemented in coordination with the support cloth;

[0050] Figure 6 It is a schematic diagram of the supporting frame and the storage assembly of the transfer vehicle of Example 1 of the present solution being connected in coordination;

[0051] Figure 7 It is a schematic diagram of one of the simplified implementation structures of the installation sleeve of the transfer vehicle of Example 1 of the present solution;

[0052] Figure 8 It is a schematic diagram of one of the simplified implementation structures of the first connection block or the second connection block of the transfer vehicle of Example 1 of the present solution;

[0053] Fig. 9 It is a schematic diagram of one of the simplified implementation structures of the card connector of the transfer vehicle in Example 1 of the present solution;

[0054] Fig.10 It is a schematic diagram of a second simplified implementation structure of the installation sleeve of the transfer vehicle of Example 1 of the present solution;

[0055] Fig.11 It is a schematic diagram of a second simplified implementation structure of the first connection block or the second connection block of the transfer vehicle of Example 1 of the present solution;

[0056] Fig.12 It is one of the implementation coordination diagrams of the frame, support frame and mounting assembly, pull rod, casters and other parts of the transfer vehicle of Example 2 of this scheme, wherein the support rod of the support frame is in a supporting state;

[0057] Fig.13 This is the second schematic diagram of the implementation of the frame, support frame and mounting components, pull rods, casters and other parts of the transfer vehicle of Example 2 of this solution, wherein the cross bar of the support frame is in a retracted state;

[0058] Fig.14 This is the second schematic diagram of the implementation of the frame, support frame and mounting components, pull rods, casters and other parts of the transfer vehicle of Example 2 of the present scheme, wherein the support frame, support rods and cross bars are all in a retracted state. DETAILED DESCRIPTION

[0059] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is particularly noted that the following embodiments are only used to illustrate the present invention, but do not limit the scope of the present invention. Similarly, the following embodiments are only partial embodiments of the present invention rather than all embodiments. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0060] Example 1

[0061] Combination Figures 1 to 11 As shown in one of the embodiments, a transfer vehicle is provided in the present embodiment, which comprises:

[0062] Frame 1;

[0063] Casters 2, arranged at the lower part of the frame 1;

[0064] A pull rod 3 is connected to one end of the frame 1 and is used to pull the frame 1 to move;

[0065] The transfer vehicle also includes:

[0066] A mounting assembly 6, arranged on the frame 1;

[0067] A support frame 4 connected to a mounting assembly 6 provided on the vehicle frame 1;

[0068] A storage assembly 5 is disposed on the vehicle frame 1 , and the storage assembly 5 is connected to the support frame 4 and is used to accommodate items to be transported.

[0069] Among them, the focus is on Figures 1 to 5 As shown in one of the figures, as a possible implementation mode, further, the frame 1 of this solution includes:

[0070] The support rods 11 are a pair and are arranged horizontally opposite to each other, and the casters 2 are connected to the lower parts of both ends of the support rods 11;

[0071] The connecting assembly 12 is respectively connected to the pair of support rods 11 to provide lateral support for the pair of support rods 11 and can drive the pair of support rods 11 to move so that the frame 1 can be folded or unfolded along the width direction;

[0072] The connecting assembly 12 is also connected to the mounting assembly 6 , and the mounting assembly 6 is provided with a limiting structure 631 for limiting the connecting assembly 12 so that the frame 1 can be expanded in the width direction.

[0073] In this solution, the support frame 4 and the storage assembly 5 can be arranged in a foldable or foldable manner. In this implementation structure, when the transfer vehicle is not in use, it can be conveniently stored by folding or disassembling the components. As a preferred implementation option, preferably, the installation assembly 6 in this solution includes:

[0074] The first connecting blocks 61 are a pair and correspond to the pair of the bracket rods 11 one by one. One end of the first connecting block 61 is provided with a groove and plugged with one end of the bracket rod 11. The opposite sides of the pair of first connecting blocks 61 are provided with a U-shaped rotating connecting portion 63;

[0075] The second connecting blocks 62 are a pair and correspond to the pair of the bracket rods 11 one by one. One end of the second connecting block 62 is provided with a groove and is plugged and matched with the other end of the bracket rod 11;

[0076] The connection assembly 12 is rotatably connected to the rotation connection parts 63 of a pair of the first connection blocks 61, respectively, and the closed side of the rotation connection part 63 away from the open side of the U-shaped structure forms a limit structure 631 for limiting the rotational cooperation range of the connection assembly 12 and the rotation connection part 63;

[0077] The support frame 4 is respectively connected to the upper ends of a pair of the first connection blocks 61 and a pair of the second connection blocks 62 .

[0078] As one of the implementation structures of the support frame 4 of the present scheme, preferably, the support frame 4 of the present scheme is detachably connected to the upper ends of a pair of the first connecting blocks 61 and a pair of the second connecting blocks 62 through matching pieces, and the upper ends of the pair of the first connecting blocks 61 and the pair of the second connecting blocks 62 are provided with a tongue 64 for matching with the matching piece, and a constraint area is formed between the tongue 64 and the upper end surface of the first connecting block 61 or the second connecting block 62, and the matching piece is inserted into the constraint area and detachably matched with the tongue 64.

[0079] Through the above-mentioned structural form, this solution can disassemble the support frame 4 and the storage assembly 5 by disassembling the support frame 4 when the storage assembly 5 is not needed. When storing, the frame 1 can be directly folded, or the items for transportation can be directly placed on the frame 1 for use.

[0080] As an example of a preferred implementation structure, in this solution, the support frame 4 includes:

[0081] The first connecting frame 40 is a pair of first connecting rods 41 that are relatively arranged at the two ends of a pair of support rods 11 of the frame 1. The first connecting frame 40 includes a pair of first connecting rods 41 that are rotatably connected in a scissor-like manner, wherein the lower end of the pair of first connecting rods 41 of one first connecting frame 40 is detachably connected to the tongue 64 at the upper end of a pair of first connecting blocks 61 connected to one end of the pair of support rods 11 through a matching piece, and the lower end of the pair of first connecting rods 41 of the other first connecting frame 40 is detachably connected to the tongue 64 at the upper end of a pair of second connecting blocks 62 connected to the other end of the pair of support rods 11 through a matching piece;

[0082] A pair of second connecting rods 42 are arranged parallel to each other between a pair of first connecting frames 40, and both ends of the pair of second connecting rods 42 are fixedly connected to the upper ends of the pair of first connecting rods 41 of the first connecting frame 40 respectively;

[0083] The pair of second connecting rods 42 and the pair of first connecting frames 40 together form a constrained space for arranging the storage assembly 5 , and the storage assembly 5 is connected to the pair of second connecting rods 42 .

[0084] In order to facilitate the connection between the first connecting rod 41 and the first connecting block 61 or the second connecting block 62, the focus is on Figure 7 , Figure 8 As a preferred implementation option, preferably, the matching parts described in this solution include:

[0085] The mounting sleeve 43 is a cylindrical shell structure adapted to the end of the first connecting rod 41. The end of the first connecting rod 41 is inserted into the cylindrical shell of the mounting sleeve 43. The mounting sleeve 43 is provided with an extension portion 44 for being inserted into the constraint area and detachably connected with the latch 64. The end of the extension portion 44 is also provided with a bent portion 45 folded upward. The bent portion 45 cooperates with the latch 64 to prevent the mounting sleeve 43 from escaping from the constraint area in a first direction; the first direction is perpendicular to or forms an angle with the direction in which the extension portion 44 is inserted into the constraint area, for example Figure 1 The partial enlarged view shown shows that the extension portion 44 of the installation sleeve 43 is inserted into the constraint area formed by the latch tongue 64 and its upper end surface from the length direction of the support rod 11. Since the first connecting rod 41 of the present scheme is a scissor-type structure, when it is in use, if it is subjected to force, it may push the extension portion 44 of the installation sleeve 43 to move along the width direction of the frame 1, and the latch tongue 64 can just restrain the extension portion 44 from escaping. In addition, when the storage component 5 contains items, the contact friction between the support frame 4 and the frame 1 will be increased, which can also prevent the installation sleeve 43 from escaping from the constraint range of the latch tongue 64 to a certain extent.

[0086] In order to improve the cooperation convenience between the first connecting block 61 or the second connecting block 62 and the mounting sleeve 43, the focus is on Fig.10 , Fig.11 As another preferred implementation option of the first connecting block 61 and the second connecting block 62 of this embodiment, preferably, the upper end surface of the first connecting block 61 or the second connecting block 62 of this embodiment is also provided with a guide groove 66 for guiding the extension part 44 to be inserted into the constraint area, and the lower end surface of the extension part 44 is provided with a guide protrusion 441 corresponding to the guide groove.

[0087] Focus on combination Figure 2 , Figure 3 As shown, since the storage assembly 5 generates a greater gravity effect on the frame 1 after placing items, in order to improve the support reliability of the frame 1, as a preferred implementation option, preferably, the frame 1 described in this solution also includes:

[0088] There are multiple supporting ribs 13, and each of them is straddled on a pair of the support rods 11. Both ends of the supporting ribs 13 are also provided with a clamping piece 131 (such as Fig. 9 As shown), the upper end of the clamping member 131 is provided with a groove and is inserted and matched with the end of the supporting rib 13, and the lower part of the clamping member 131 is provided with a pair of downward extensions 132, and the ends of the extensions 132 extend toward each other to form a hook 133. The clamping member 131 can be made of plastic material. Through the specific elasticity of plastic, the hook 133 can be clamped on the bracket rod 11 to fix the supporting rib 13.

[0089] Combination Figure 1 or Figure 6 As shown, in the present embodiment, the storage assembly 5 can be a storage bag or a storage box, the upper end of the storage bag or the storage box is connected to the support frame 4 and is used to accommodate the items to be transported; the lower end of the storage bag or the storage box is in contact with the frame 1 or forms a gap or is connected by a binding piece or is buckled on the support rod 11 by a U-shaped structure connection buckle 52.

[0090] Focus on combination Figure 4 As shown, in order to improve the uniformity and reliability of the force support of the frame 1 for the storage component 4, as an example of a better implementation option, preferably, the frame 1 described in this scheme also includes a support cloth 15, which is a multi-layer fabric structure, and multiple support ribs 13 are transversely inserted in the support cloth 15, and the two ends are exposed outside the support cloth 15.

[0091] In this solution, since the support ribs 13 are detachably connected to the bracket rods 11 of the frame 1, the support cloth 15 can be combined with the support frame 4 by disassembling the support ribs 13 so as to be reused as a temporary table, that is, the two ends of the support ribs 13 are connected to the second connecting rod 42 of the support frame 4 through the clamping parts 131. Since this is a more common implementation form of the scissors-type folding table, this solution will not be further described or illustrated here.

[0092] In the implementation structure of the vehicle frame 1, as a preferred implementation selection example, preferably, the connection assembly 12 of this solution includes:

[0093] The first traction rods 121 are a pair and correspond to the first connection blocks 61 one by one. One end of the first traction rod 121 is inserted into the rotation connection part 63 of the corresponding first connection block 61 and is rotationally connected in the rotation connection part 63. The other side of the rotation connection part 63 away from the open side of the U-shaped structure forms a limiting structure 631 for limiting the rotation of the first traction rod 121.

[0094] The connecting seat 122 is arranged between the pair of first traction rods 121, and the other ends of the pair of first traction rods 121 are respectively rotatably connected to the connecting seat 122; one end of the pull rod 3 is connected to the connecting seat 122 through a rotating member, and the other end of the pull rod 3 can be turned upward or downward around the end portion of the pull rod 3 rotatably connected to the connecting seat 122;

[0095] The scissor rods 14 are a pair and the middle part is rotatably connected in a scissor-like manner. The pair of scissor rods 14 are arranged between the pair of support rods 11, and one end of the pair of scissor rods 14 is rotatably connected to the other end of the pair of support rods 11, and the other end of the pair of scissor rods 14 is relatively movably connected to the two ends of the pair of support rods 11 through movable connecting pieces;

[0096] The movable connecting member is a guide rod 141 , and guide grooves are provided between the two ends of a pair of support rods 11 . The other ends of a pair of scissor rods 14 are slidably connected to the guide grooves through the guide rod 141 .

[0097] exist Figures 1 to 5 Based on the shown Figure 8 or Fig.11 In this embodiment, the limiting structure 631 of the first connecting block 61 limits the rotation range of the first traction rod 121, and a first latch hole 632 can be provided on the rotating connection part 63 to rotate with the end of the first traction rod 121, that is, a latch is provided at the end of the first traction rod 121 to cooperate with the first latch hole 632 to achieve rotational connection with the rotating connection part 63.

[0098] When the device of this solution is in use, the user pulls the pull rod 3 in the forward direction, so that the first traction rod 121 will rotate accordingly to unfold the support rod 11 of the frame 1, and then the support frame 4 and the storage assembly 5 are placed on the frame 1 in sequence. When in use, the frame 1 is driven forward by pulling the pull rod 3 forward. Due to the constraint of the limiting structure 631, the first traction rod 121 is constrained after being pulled to be perpendicular to the support rod 11 or forming a specific angle. At this time, further pulling the pull rod 3 will not cause deformation of the frame. When storage is required, it is only necessary to disassemble the storage assembly 5 and the support frame 4 in sequence, and then push the pull rod 3 in the opposite direction to fold and collapse the frame 1.

[0099] In this solution, there are two pairs of casters 2, which correspond one-to-one to a pair of first connecting blocks 61 and a pair of second connecting blocks 62. The casters 2 are connected to the first connecting blocks 61 or the second connecting blocks 62 through caster 2 mounting parts; for easy installation, caster mounting holes 65 can be set on the first connecting blocks 61 and the second connecting blocks 62 to cooperate with the caster mounting components 21 set on the casters 2.

[0100] Example 2

[0101] Combination Figure 12 to Figure 14 As shown in one, the scheme of this embodiment is substantially the same as that of embodiment 1, except that the support frame of this embodiment is different from that of embodiment 1. As another implementation structure of the support frame 4 of this scheme, preferably, in this embodiment, the support frame 4 includes:

[0102] There are two pairs of support rods 46, which correspond to a pair of first connection blocks 61 and a pair of second connection blocks 62 respectively. The upper ends of the pair of first connection blocks 61 and the pair of second connection blocks 62 are provided with a rotating connection seat 67. One end of the two pairs of support rods 46 is rotatably connected with the corresponding rotating connection seat 67 at the upper end of the first connection block 61 or the second connection block 62 through a rotating pin. The support rod 46 has a supporting state and a folding state. In the supporting state, the other end of the support rod 46 is turned upward around the rotating pin to be perpendicular to the bracket rod 11. In the folding state, the other end of the support rod 46 is folded downward to be attached to the bracket rod 11.

[0103] The crossbars 47 are a pair, wherein one crossbar 47 is connected to the other end of a pair of support bars 46 connected to a pair of first connection blocks 61, and the other crossbar 47 is connected to the other end of a pair of support bars 46 connected to a pair of second connection blocks 62;

[0104] When the two pairs of support rods 46 are in a supporting state, the two pairs of support rods 46 enclose a constrained space for arranging the storage assembly 5 , and the storage assembly 5 is connected to the support rods 46 or the cross bar 47 connected thereto.

[0105] In this embodiment, in order to facilitate folding, the other ends of the two pairs of support rods 46 can be provided with a connecting portion 461 connected to the cross bar 47, wherein one end of the cross bar 46 can be connected to the connecting portion 461 by a rotating connecting pin, and the other end thereof can be detachably connected to another connecting portion, such as by overlapping, snapping, etc.; wherein, Fig.12 , Fig.13 , Fig.14 The following are schematic diagrams of the change of the support frame 4 from the supporting state to the folding state; through this structure, the storage of the transfer vehicle and the installation and disassembly of the storage components can be greatly facilitated.

[0106] The above descriptions are only some embodiments of the present invention, and do not limit the protection scope of the present invention. Any equivalent device or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A transfer vehicle, comprising: Frame; Casters, arranged at the lower part of the frame; A pull rod connected to one end of the frame and used to pull the frame to move; Characterized in that the transfer vehicle also includes: A mounting assembly, arranged on the frame; A support frame connected to a mounting assembly provided on the vehicle frame; A storage assembly is arranged on the frame, the storage assembly is connected to the support frame and is used to accommodate items to be transported; Wherein, the frame comprises: The support rods are a pair and are arranged horizontally opposite to each other, and the casters are connected to the lower parts of the two ends of the support rods; A connecting assembly is respectively connected to the pair of support rods to provide lateral support for the pair of support rods and can drive the pair of support rods to move so that the frame can be folded or unfolded along the width direction; The connecting assembly is also connected to the mounting assembly, and the mounting assembly is provided with a limiting structure for limiting the expansion range of the frame along the width direction by the connecting assembly.

2. The transfer vehicle according to claim 1, characterized in that: The installation assembly includes: The first connecting block is a pair and corresponds to the pair of the bracket rods one by one. One end of the first connecting block is provided with a groove and is plugged with one end of the bracket rod. The opposite sides of the pair of the first connecting blocks are provided with a rotating connecting portion of a U-shaped structure. The second connecting blocks are a pair and correspond to the pair of the bracket rods one by one. One end of the second connecting block is provided with a groove and is plugged and matched with the other end of the bracket rod; Wherein, the connecting assembly is rotatably connected to the rotating connecting parts of a pair of the first connecting blocks respectively, and the closed side of the rotating connecting part away from the open side of its U-shaped structure forms a limiting structure for limiting the rotational cooperation range of the connecting assembly and the rotating connecting part; The support frame is respectively connected with the upper ends of a pair of the first connection blocks and a pair of the second connection blocks.

3. The transfer vehicle according to claim 2, characterized in that: The support frame is detachably connected to the upper ends of a pair of the first connection blocks and a pair of the second connection blocks through matching pieces, and the upper ends of the pair of the first connection blocks and the pair of the second connection blocks are provided with a tongue for matching with the matching piece, and a restraint area is formed between the tongue and the upper end surface of the first connection block or the second connection block, and the matching piece is inserted into the restraint area and detachably matched with the tongue; the support frame comprises: The first connecting frame is a pair of first connecting rods that are relatively arranged at the two ends of a pair of support rods of the frame, wherein the first connecting frame includes a pair of first connecting rods that are rotatably connected in a scissor-like manner, wherein the lower ends of the pair of first connecting rods of one first connecting frame are detachably connected with the tongues at the upper ends of a pair of first connecting blocks connected to one end of the pair of support rods through a matching piece, and the lower ends of the pair of first connecting rods of the other first connecting frame are detachably connected with the tongues at the upper ends of a pair of second connecting blocks connected to the other ends of the pair of support rods through a matching piece; A pair of second connecting rods are arranged parallel to each other between a pair of first connecting frames, and both ends of the pair of second connecting rods are respectively fixedly connected to the upper ends of the pair of first connecting rods of the first connecting frame; The pair of second connecting rods and the pair of first connecting frames together form a constrained space for arranging a storage assembly, and the storage assembly is connected to the pair of second connecting rods.

4. The transfer vehicle according to claim 3, characterized in that: The matching piece comprises: The mounting sleeve is a cylindrical shell structure adapted to the end of the first connecting rod. The end of the first connecting rod is inserted into the cylindrical shell of the mounting sleeve. The mounting sleeve is provided with an extension portion for being inserted into the constraint area and detachably connected with a latch. The end of the extension portion is also provided with an upwardly folded bending portion, which cooperates with the latch to prevent the mounting sleeve from escaping from the constraint area in a first direction. The first direction is perpendicular to or forms an angle with the direction in which the extension portion is inserted into the constraint area.

5. The transfer vehicle according to claim 4, characterized in that: The upper end surface of the first connecting block or the second connecting block is also provided with a guide groove for guiding the extension part to be inserted into the restraining area, and the lower end surface of the extension part is provided with a guide protrusion corresponding to the guide groove.

6. The transfer vehicle according to claim 2, characterized in that: The support frame comprises: The support rods are in two pairs and correspond to a pair of first connection blocks and a pair of second connection blocks respectively. The upper ends of the pair of first connection blocks and the pair of second connection blocks are provided with rotating connection seats. One end of the two pairs of support rods is rotatably connected to the corresponding rotating connection seats at the upper ends of the first connection blocks or the second connection blocks through rotating pins respectively. The support rods have a supporting state and a folding state. In the supporting state, the other end of the support rod is turned upward around the rotating pin to be perpendicular to the support rod. In the folding state, the other end of the support rod is folded downward to be attached to the support rod. A pair of cross bars, one of which is connected to the other end of a pair of support bars connected to a pair of first connecting blocks, and the other cross bar is connected to the other end of a pair of support bars connected to a pair of second connecting blocks; When the two pairs of support rods are in a supporting state, the two pairs of support rods enclose a constrained space for arranging a storage assembly, and the storage assembly is connected to the support rods or a cross bar connected thereto.

7. The transfer vehicle according to any one of claims 3 to 6, characterized in that: The frame also includes: There are multiple supporting ribs, all of which are straddled on a pair of the support rods. Both ends of the supporting ribs are provided with clamping parts fixedly matched with the pair of the support rods.

8. The transfer vehicle according to any one of claims 3 to 6, characterized in that: The connection component comprises: A first traction rod is a pair and corresponds to a pair of the first connection blocks one by one, one end of the first traction rod is inserted into the rotation connection part of the corresponding first connection block and is rotationally connected in the rotation connection part, and the other side of the rotation connection part away from the open side of the U-shaped structure forms a limit structure for limiting the rotation of the first traction rod; A connecting seat is arranged between a pair of the first traction rods, and the other ends of the pair of the first traction rods are respectively rotatably connected to the connecting seat; one end of the pull rod is connected to the connecting seat through a rotating member, and the other end of the pull rod can be turned upward or downward around the end of the pull rod rotatably connected to the connecting seat; The scissor rods are a pair and the middle part is rotatably connected in a scissor-like manner. The pair of scissor rods are arranged between the pair of support rods, and one end of the pair of scissor rods is rotatably connected to the other end of the pair of support rods respectively, and the other end of the pair of scissor rods is relatively movably connected to the two ends of the pair of support rods respectively through movable connecting pieces; Wherein, the movable connecting member is a guide rod, and guide grooves are provided between the two ends of a pair of support rods, and the other ends of a pair of scissor rods are slidably connected to the guide grooves through the guide rod.

9. The transfer vehicle according to claim 7, characterized in that: The frame further comprises a support cloth, which is a multi-layer fabric structure, wherein a plurality of support ribs are transversely inserted into the support cloth, and both ends of the plurality of support ribs are exposed outside the support cloth; There are two pairs of casters, which correspond one to one with one pair of the first connecting blocks and one to one with one pair of the second connecting blocks, and the casters are connected to the first connecting blocks or the second connecting blocks through caster mounting parts; The storage component is a storage bag or a storage box, the upper end of which is connected to the support frame and is used to accommodate items to be transported; the lower end of the storage bag or the storage box is in contact with the frame or forms a gap or is connected through a binding piece or is buckled on the support rod through a U-shaped structure connection buckle.

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