A trolley frame and a handcart

Abstract

This utility model provides a trolley frame and a handcart, relating to the field of trolleys. The trolley frame includes a vertical tube assembly, a side folding tube assembly, and a limiting member. The vertical tube assembly includes a front vertical tube and a rear vertical tube. The side folding tube assembly is disposed between the front and rear vertical tubes, and its two ends are rotatably connected to the front and rear vertical tubes respectively. The side folding tube assembly can be folded or rotated out. The limiting member is disposed on the side folding tube assembly, which limits the rotation range of the side folding tube assembly, thereby limiting the extension length of the side folding tube assembly after the trolley frame is unfolded. The positions of the front and rear vertical tubes are thus relatively determined, thereby increasing the overall rigidity and stability of the trolley frame and improving the user experience. This utility model also provides a handcart, which includes a trolley frame.

Description

Technical Field

[0001] This utility model relates to the field of trolleys, and more specifically, to a trolley frame and a handcart. Background Technology

[0002] Trolleys can be used for temporary transport of goods and are widely used in stations, airports, or outdoor activities. They can be classified as non-foldable or foldable trolleys.

[0003] One type of foldable stroller can be folded along its length, and the base of the stroller can also be folded. Therefore, when unfolded, this type of stroller has less rigidity in the length direction due to the lack of length direction limitation. The stroller will still extend in the length direction, resulting in low stability during use and affecting the user experience. Utility Model Content

[0004] This utility model provides a trolley frame and a handcart, which can solve the above problems, increase the rigidity of the trolley frame, and prevent the trolley frame from continuing to extend after being unfolded.

[0005] The embodiments of this utility model can be implemented as follows:

[0006] An embodiment of this utility model provides a trolley frame, which includes:

[0007] The vertical pipe assembly includes a front vertical pipe and a rear vertical pipe;

[0008] The side-folding tube assembly is located between the front vertical tube and the rear vertical tube, and both ends of the side-folding tube assembly are rotatably connected to the front vertical tube and the rear vertical tube respectively. The side-folding tube assembly can be folded and closed or rotated and unfolded.

[0009] A limiting element is provided on the side folding tube assembly, and the limiting element is used to limit the rotation range of the side folding tube assembly.

[0010] Optionally, the side-folded tube assembly includes a front first inclined tube, a front second inclined tube, a rear first inclined tube and a rear second inclined tube, wherein the front first inclined tube and the front second inclined tube intersect and are rotatably connected, and the rear first inclined tube and the rear second inclined tube intersect and are rotatably connected.

[0011] The two ends of the first inclined tube on the front side are rotatably connected to the first inclined tube on the front side and the first inclined tube on the rear side, respectively. The two ends of the second inclined tube on the front side are rotatably connected to the first inclined tube on the front side and the second inclined tube on the rear side, respectively. The first inclined tube on the rear side and the second inclined tube on the rear side are also rotatably connected to the first inclined tube on the rear side.

[0012] Optionally, one end of the limiting member is connected to the intersection of the front first inclined tube and the front second inclined tube, and the other end of the limiting member is connected to the intersection of the rear first inclined tube and the rear second inclined tube, and the limiting member is located between the front first inclined tube and the front second inclined tube.

[0013] Optionally, the limiting element is a rigid long plate or a rigid rod; or, the limiting element is a flexible webbing or a flexible pull rope.

[0014] Optionally, the side-folding pipe assembly also includes a front branch pipe and a rear branch pipe. One end of the front branch pipe is rotatably connected to the first front inclined pipe, and the other end of the front branch pipe is rotatably connected to the front vertical pipe. One end of the rear branch pipe is rotatably connected to the first rear inclined pipe, and the other end of the rear branch pipe is rotatably connected to the rear vertical pipe.

[0015] Optionally, the limiting element is a stop block, which is disposed on the front first inclined tube, and the front branch tube can abut against the stop block;

[0016] And / or, the stop block is provided on the rear first inclined pipe, and the rear branch pipe can abut against the stop block;

[0017] And / or, the stop block is provided on the front branch pipe, and the front first inclined pipe can abut against the stop block;

[0018] And / or, the stop block is provided on the rear branch pipe, and the rear first inclined pipe can abut against the stop block.

[0019] Optionally, the trolley frame also includes a base frame, which includes a front base frame and a rear base frame. One end of the front base frame is rotatably connected to the front vertical tube, the other end of the front base frame is rotatably connected to the rear base frame, and the end of the rear base frame is rotatably connected to the rear vertical tube.

[0020] Optionally, the cart frame also includes a front wheel and a rear wheel, the front wheel being detachably connected to the bottom end of the front vertical tube and the rear wheel being detachably connected to the bottom end of the rear vertical tube.

[0021] Both the front and rear bottom frames have accommodating areas, where the front and rear wheels can be placed.

[0022] Optionally, the trolley frame also includes a transverse support tube disposed between two front vertical tubes, and / or, the transverse support tube is disposed between two rear vertical tubes.

[0023] An embodiment of this utility model also provides a handcart, including a handle and the aforementioned cart frame, with the handle disposed on one side of the front vertical tube.

[0024] The beneficial effects of this utility model embodiment:

[0025] The trolley frame includes a vertical tube assembly, a side folding tube assembly, and a limiting component. The vertical tube assembly includes a front vertical tube and a rear vertical tube. The side folding tube assembly is located between the front and rear vertical tubes, and both ends of the side folding tube assembly are rotatably connected to the front and rear vertical tubes, respectively. The side folding tube assembly can be folded or rotated out. The limiting component is located on the side folding tube assembly, which limits the rotation range of the side folding tube assembly, thereby limiting the extension length of the side folding tube assembly after the trolley frame is unfolded. The positions of the front and rear vertical tubes are also relatively determined, which increases the overall rigidity and stability of the trolley frame and improves the user experience.

[0026] The trolley includes a trolley frame, which has all the functions of a trolley frame. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of a cart frame provided in an embodiment of the present utility model;

[0029] Figure 2 This is a schematic diagram of another trolley frame provided in an embodiment of the present utility model;

[0030] Figure 3 This is a schematic diagram of the folded structure of the cart frame provided in an embodiment of this utility model.

[0031] Icons: 1-Vertical tube assembly; 10-Front vertical tube; 11-Rear vertical tube; 12-Top hinge seat; 13-Bottom hinge seat; 2-Side folding tube assembly; 20-First front inclined tube; 21-Second front inclined tube; 22-First rear inclined tube; 23-Second rear inclined tube; 24-Middle extension inclined tube; 25-Front branch tube; 26-Rear branch tube; 3-Limiting component; 4-Base frame; 40-Front bottom frame; 41-Rear bottom frame; 42-Accommodation area; 43-Hinge joint; 5-Front wheel; 6-Rear wheel; 7-Transverse support tube; 8-Handle. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0034] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0035] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0036] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0037] The terms “comprising,” “including,” or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase “comprising one…” does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0038] Unless otherwise explicitly specified and limited, terms such as "setup" and "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0040] As described in the background section, folding trolleys can be folded along their length. The vertical tubes on the front and rear sides of the trolley are connected by cross tubes. The base of the trolley is divided into two parts that are rotatably connected. When unfolded, this type of trolley lacks a length-direction constraint, resulting in low rigidity in the length direction. The trolley will still extend in the length direction (for example, if the cross tube between the front and rear vertical tubes rotates, it will cause the cross tube to push the front or rear vertical tube to expand outward). This results in low stability during use and affects the user experience.

[0041] In view of this, the trolley frame and handcart provided in the embodiments of this utility model can solve the above problems, and will be described in detail below.

[0042] Please refer to Figure 1 and Figure 2 The trolley frame includes a vertical tube assembly 1, a side folding tube assembly 2, and a limiting member 3. The vertical tube assembly 1 includes a front vertical tube 10 and a rear vertical tube 11. The side folding tube assembly 2 is located between the front vertical tube 10 and the rear vertical tube 11, and both ends of the side folding tube assembly 2 are rotatably connected to the front vertical tube 10 and the rear vertical tube 11, respectively. The side folding tube assembly 2 can be folded and closed or rotated and unfolded. Folding and closing the side folding tube assembly 2 pulls the front vertical tube 10 and the rear vertical tube 11 closer together, realizing the folding of the trolley frame. The rotation unfolds the front vertical tube 10 and the rear vertical tube 11, allowing the trolley frame to unfold. The limiting member 3 is set on the side folding tube assembly 2. The limiting member 3 can limit the rotation range of the side folding tube assembly 2, thereby limiting the extension length of the side folding tube assembly 2 when the trolley frame is unfolded. The positions of the front vertical tube 10 and the rear vertical tube 11 are also relatively determined, which increases the rigidity and stability of the trolley frame as a whole, thereby preventing the trolley frame from expanding during use and improving the user experience.

[0043] Specifically, the vertical tube assembly 1 includes two front vertical tubes 10 and two rear vertical tubes 11. The two front vertical tubes 10 are spaced apart and arranged parallel to each other on the front side of the trolley frame, and the two rear vertical tubes 11 are spaced apart and arranged parallel to each other on the rear side of the trolley frame. The top ends of the two front vertical tubes 10 and the two rear vertical tubes 11 are each fitted with a top hinge seat 12. The bottom ends of the two front vertical tubes 10 are each connected to a front wheel 5, and the bottom ends of the two rear vertical tubes 11 are each connected to a rear wheel 6.

[0044] The side-folded tube assembly 2 includes a front first inclined tube 20, a front second inclined tube 21, a rear first inclined tube 22, and a rear second inclined tube 23. The front first inclined tube 20 and the front second inclined tube 21 intersect, and a pin is provided at the intersection. The pin connects the front first inclined tube 20 and the front second inclined tube 21 together and allows them to rotate. The rear first inclined tube 22 and the rear second inclined tube 23 intersect, and a pin is also provided at the intersection. The pin connects the rear first inclined tube 22 and the rear second inclined tube 23 together and allows them to rotate. One end of the first inclined tube 20 on the front side is rotatably connected to the middle of the front vertical tube 10, and the other end of the first inclined tube 20 on the front side is rotatably connected to the first inclined tube 22 on the rear side via a pin. One end of the second inclined tube 21 on the front side is hinged to the top hinge seat 12 at the top of the front vertical tube 10, and the other end of the second inclined tube 21 on the front side is rotatably connected to the second inclined tube 23 on the rear side via a pin. The end of the first inclined tube 22 on the rear side away from the front vertical tube 10 is rotatably connected to the middle of the rear vertical tube 11, and the end of the second inclined tube 23 on the rear side away from the front vertical tube 10 is hinged to the top hinge seat 12 at the top of the rear vertical tube 11.

[0045] Of course, to increase the length of the trolley, a central extension diagonal tube 24 can be provided, which is located within the side folding tube assembly 2. For example, two central extension diagonal tubes 24 are arranged crosswise, with the intersection point located in the middle of the two tubes. A pin is provided at the intersection point of the two tubes, connecting them together and allowing them to rotate. One of the tubes has its two ends rotatably connected to the front first diagonal tube 20 and the rear second diagonal tube 23, respectively, while the other tube has its two ends rotatably connected to the front second diagonal tube 21 and the rear first diagonal tube 22, respectively. If it is necessary to further increase the length of the trolley, this can be achieved by increasing the number of central extension diagonal tubes 24.

[0046] Optionally, in order to make the space occupied by the side-folding tube assembly 2 smaller after folding and closing, the side-folding tube assembly 2 also includes a front branch tube 25 and a rear branch tube 26. One end of the front branch tube 25 is rotatably connected to the front first inclined tube 20, and the other end of the front branch tube 25 is rotatably connected to the middle of the front vertical tube 10. One end of the rear branch tube 26 is rotatably connected to the rear first inclined tube 22, and the other end of the rear branch tube 26 is rotatably connected to the middle of the rear vertical tube 11. This allows the side-folding tube assembly 2 to be closer to the front vertical tube 10 or the rear vertical tube 11 when folded and closed.

[0047] Continue to refer to Figure 1 In order to limit the extension length of the side folding tube assembly 2 when it is unfolded, a limiting member 3 is provided on the first inclined tube 20 on the front side. The limiting member 3 is a stop block. When the front branch tube 25 rotates, it can abut against the stop block. The stop block limits the mutual rotation between the front branch tube 25 and the first inclined tube 20 on the front side, thereby limiting the rotation range of the entire side folding tube assembly 2 when it is unfolded, thereby limiting the unfolded length of the side folding tube assembly 2. This is used to tighten the front vertical tube 10 and the rear vertical tube 11 in the length direction of the trolley, thereby increasing the rigidity of the trolley and the stability during use.

[0048] Of course, the stop block can also be provided on the rear first inclined pipe 22, and the rear branch pipe 26 can abut against the stop block when rotating, thereby limiting the relative rotation between the rear branch pipe 26 and the rear first inclined pipe 22. The stop block can also be provided on the front branch pipe 25, and the front first inclined pipe 20 can abut against the stop block to limit the relative rotation between the front branch pipe 25 and the front first inclined pipe 20. The stop block can also be provided on the rear branch pipe 26, and the rear first inclined pipe 22 can abut against the stop block to limit the relative rotation between the rear branch pipe 26 and the rear first inclined pipe 22. Alternatively, the stop block can be provided on both the front first inclined pipe 20 and the front branch pipe 25; or, the stop block can be provided on both the rear first inclined pipe 22 and the rear branch pipe 26; or, the stop block can be provided on the front first inclined pipe 20, the front branch pipe 25, the rear first inclined pipe 22, and the rear branch pipe 26. The location of the stop block is not limited here.

[0049] Furthermore, the form of the stop block is not limited; the stop block can be a regular or irregular block or rod. The stop block shown in this embodiment is a cylindrical block.

[0050] refer to Figure 2The limiting member 3 is arranged along the length of the trolley. One end of the limiting member is located between the front first inclined tube 20 and the front second inclined tube 21, and the end of the limiting member is rotatably connected to the pin at the intersection of the front first inclined tube 20 and the front second inclined tube 21. The other end of the limiting member is located between the rear first inclined tube 22 and the rear second inclined tube 23, and the end of the limiting member is rotatably connected to the pin at the intersection of the rear first inclined tube 22 and the rear second inclined tube 23. The middle part of the limiting member is located between the two middle extension inclined tubes 24, and is rotatably connected to the pin at the intersection of the two middle extension inclined tubes 24. When the side folding tube assembly 2 is unfolded, due to the restriction of the limiting member 3, the extension length of the side folding tube assembly 2 when unfolded is limited to a certain range, thereby limiting the position of the front vertical tube 10 and the rear vertical tube 11 in the length direction of the trolley, increasing the rigidity of the trolley and the stability during use.

[0051] Optionally, the limiting member 3 is a rigid long plate or a rigid rod. When the limiting member 3 is a rigid rod or a rigid long plate, its end needs to be detachably connected to the pin so as to allow the side folding tube assembly 2 to be folded.

[0052] Optionally, the limiting member 3 can also be a flexible webbing or a flexible pull rope. When the limiting member 3 is a flexible webbing or a flexible pull rope, the two ends of the limiting member 3 can be fixedly connected to the pin on the corresponding side. The flexible webbing and the flexible pull rope do not affect the folding of the side folding tube group 2.

[0053] Optionally, to further increase the stability of the trolley frame, a transverse support tube 7 is also provided between the two front vertical tubes 10. The two ends of the transverse support tube 7 are connected to the two front vertical tubes 10 respectively, thereby preventing the front vertical tubes 10 from deforming in the width direction of the trolley frame. Similarly, a transverse support tube 7 is also provided between the two rear vertical tubes 11. The two ends of the transverse support tube 7 are connected to the two rear vertical tubes 11 respectively, thereby preventing the rear vertical tubes 11 from deforming in the width direction of the trolley frame.

[0054] The trolley frame also includes a base frame 4. To facilitate the connection and folding of the base frame 4, a bottom hinge seat 13 is provided on the transverse support tube 7. The two ends of the base frame 4 are respectively hinged to the bottom hinge seats 13 on the front and rear sides of the trolley frame.

[0055] Specifically, the base frame 4 includes a front base frame 40 and a rear base frame 41. The end of the front base frame 40 near the front vertical tube 10 is hinged to the bottom hinge seat 13 of the horizontal support tube 7. The other end of the front base frame 40 is rotatably connected to the rear base frame 41 through a hinge joint 43, thereby achieving folding. The end of the rear base frame 41 near the rear vertical tube 11 is hinged to the bottom hinge seat 13 on that side.

[0056] refer to Figure 3Since the front bottom frame 40 and the rear bottom frame 41 overlap when the stroller frame is folded, a storage area 42 is formed between the front bottom frame 40 and the rear bottom frame 41. Therefore, the disassembled front wheel 5 and rear wheel 6 can be placed in the storage area 42. When the stroller frame is folded and stored, the front wheel 5 and rear wheel 6 will not take up extra space, which helps to reduce the size and space occupied by the stroller frame.

[0057] It is worth mentioning that in this embodiment, the front wheel 5 and the front vertical rod, and the rear wheel 6 and the rear vertical tube 11 are detachably connected. For example, both the front wheel 5 and the rear wheel 6 are mounted on a wheel bracket, which has a threaded sleeve. The bottom outer walls of the front vertical tube 10 and the rear vertical tube 11 have corresponding threads, and the wheel bracket can be threadedly connected to the front vertical tube 10 and the rear vertical tube 11. The wheel bracket here is considered prior art. Of course, the front wheel 5 and the front vertical tube 10, and the rear wheel 6 and the rear vertical rod can also be connected in other detachable ways, which will not be listed here.

[0058] The trolley frame of this utility model limits the rotation range of the side folding tube assembly 2 by setting the limiting member 3, thereby limiting the extension length of the side folding tube assembly 2 after the trolley frame is unfolded, so as to avoid the trolley frame from expanding during use, thereby increasing the rigidity and stability of the trolley frame as a whole, which is beneficial to improving the user experience.

[0059] An embodiment of this utility model also provides a handcart, including a handle 8 and the aforementioned cart frame. The handle 8 is disposed on one side of the front vertical tube 10. Specifically, a mounting position is provided on the transverse support tube 7 between the two front vertical tubes 10, and the lower end of the handle 8 is installed in the mounting position, allowing the entire cart to be easily pulled by the handle 8.

[0060] The structure and form of the handle 8 are not limited here, and any existing technology can be used. The handcart includes a cart frame, which has all the functions of a cart frame.

[0061] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A cart frame, characterized in that, include: Vertical pipe assembly (1), the vertical pipe assembly (1) includes a front vertical pipe (10) and a rear vertical pipe (11). Side-folding tube assembly (2), the side-folding tube assembly (2) is disposed between the front vertical tube (10) and the rear vertical tube (11), and the two ends of the side-folding tube assembly (2) are rotatably connected to the front vertical tube (10) and the rear vertical tube (11) respectively. The side-folding tube assembly (2) can be folded and closed or rotated and unfolded. Limiting member (3), the limiting member (3) is disposed on the side folding tube assembly (2), the limiting member (3) is used to limit the rotation range of the side folding tube assembly (2).

2. The stroller frame of claim 1, wherein, The side-folded tube assembly (2) includes a front first inclined tube (20), a front second inclined tube (21), a rear first inclined tube (22) and a rear second inclined tube (23). The front first inclined tube (20) and the front second inclined tube (21) intersect and are rotatably connected. The rear first inclined tube (22) and the rear second inclined tube (23) intersect and are rotatably connected. The two ends of the first inclined tube (20) on the front side are rotatably connected to the first vertical tube (10) on the front side and the first inclined tube (22) on the rear side, respectively. The two ends of the second inclined tube (21) on the front side are rotatably connected to the first vertical tube (10) on the front side and the second inclined tube (23) on the rear side, respectively. The first inclined tube (22) on the rear side and the second inclined tube (23) on the rear side are also rotatably connected to the first vertical tube (11) on the rear side.

3. The stroller frame of claim 2, wherein, One end of the limiting member (3) is connected to the intersection of the front first inclined tube (20) and the front second inclined tube (21), and the other end of the limiting member (3) is connected to the intersection of the rear first inclined tube (22) and the rear second inclined tube (23), and the limiting member (3) is located between the front first inclined tube (20) and the front second inclined tube (21).

4. The stroller frame of claim 3, wherein, The limiting member (3) is a rigid long plate or a rigid rod; or, the limiting member (3) is a flexible webbing or a flexible pull rope.

5. The stroller frame of claim 2, wherein, The side-folded tube assembly (2) also includes a front branch tube (25) and a rear branch tube (26). One end of the front branch tube (25) is rotatably connected to the front first inclined tube (20), and the other end of the front branch tube (25) is rotatably connected to the front vertical tube (10). One end of the rear branch tube (26) is rotatably connected to the rear first inclined tube (22), and the other end of the rear branch tube (26) is rotatably connected to the rear vertical tube (11).

6. The stroller frame of claim 5, wherein, The limiting member (3) is a stop block, which is disposed on the front first inclined tube (20), and the front branch tube (25) can abut against the stop block; And / or, the stop block is disposed on the rear first inclined pipe (22), and the rear branch pipe (26) can abut against the stop block; And / or, the stop block is disposed on the front branch pipe (25), and the front first inclined pipe (20) can abut against the stop block; And / or, the stop is disposed on the rear branch pipe (26), and the rear first inclined pipe (22) can abut against the stop.

7. The stroller frame of claim 1, wherein, The trolley frame also includes a base frame (4), which includes a front base frame (40) and a rear base frame (41). One end of the front base frame (40) is rotatably connected to the front vertical tube (10), and the other end of the front base frame (40) is rotatably connected to the rear base frame (41). The end of the rear base frame (41) is rotatably connected to the rear vertical tube (11).

8. The stroller frame of claim 7, wherein, The trolley frame also includes a front wheel (5) and a rear wheel (6), the front wheel (5) being detachably connected to the bottom end of the front vertical tube (10), and the rear wheel (6) being detachably connected to the bottom end of the rear vertical tube (11). Both the front bottom frame (40) and the rear bottom frame (41) have a receiving area (42), and the front wheel (5) and the rear wheel (6) can be placed in the receiving area (42).

9. The trolley frame according to any one of claims 1-8, characterized in that, The trolley frame also includes a transverse support tube (7), which is disposed between the two front vertical tubes (10), and / or, the transverse support tube (7) is disposed between the two rear vertical tubes (11).

10. A trolley characterised by, Includes a handle (8) and a cart frame as described in any one of claims 1-9, wherein the handle (8) is disposed on one side of the front vertical tube (10).

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