Trolley

Abstract

The utility model discloses a trolley, which relates to the technical field of trolleys and comprises two bottom blocking supports and a middle plastic connecting piece, the middle plastic connecting piece is arranged between the two bottom blocking supports, and corner bottom supporting pieces are arranged at the corners of the outer ends of the bottom blocking supports. Universal wheels with brakes are arranged at the lower ends of the corner bottom supporting pieces, cart vertical rods are arranged at the upper ends of the corner bottom supporting pieces, and corner top connecting pieces are arranged at the upper ends of the cart vertical rods. Due to the arrangement of the reinforcing bottom supporting structure, when articles are stored, the two middle plastic connecting pieces are effectively connected and reinforced through the reinforcing bottom supporting structure, the bottom bearing capacity can be effectively enhanced, the carrying capacity of the articles can be improved, the reinforcing bottom supporting structure can reduce the gap between the two bottom blocking supports, and the storage space is saved. And therefore, the articles are not easy to fall off, so that the articles are more convenient to carry.

Description

Technical Field

[0001] The utility model relates to the technical field of trolleys, in particular to a trolley. Background Art

[0002] As people's living standards continue to improve, outings, picnics and other outdoor activities are loved by more and more people. Since outings and picnics require a lot of food and tools, a cart is needed to carry them for easy carrying and use.

[0003] After searching, the Chinese patent publication number is CN215752510U, which discloses a new type of camping car, which relates to the technical field of camping cars. It includes a first right-angle connector, a second right-angle connector, a third right-angle connector, a fourth right-angle connector, a first intermediate connector, a second intermediate connector, a first bevel connector, a second bevel connector, a third bevel connector, a fourth bevel connector, a first five-slot connector, a second five-slot connector, a supporting telescopic tube, a first four-slot connector, a second four-slot connector, a supporting straight tube, a flat straight supporting tube, a supporting curved tube, a connecting ear seat, a handlebar assembly, a universal wheel, and a fixed wheel, wherein the first right-angle connector is connected to the first five-slot connector through a flat straight supporting tube.

[0004] However, when placing items in the above device, due to the accumulation of items and the lack of a reinforcing structure to connect the bottom, the overall bearing capacity is weak, while there is a large gap in the middle and no obstacles. Therefore, when placing a partition cloth and items inside, the placed items can easily press the partition cloth down and deform it. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings existing in the prior art, and a trolley is proposed. When storing items, the two middle plastic connecting parts are effectively connected and strengthened through the reinforced bottom support, which can improve the overall bearing capacity and facilitate the placement of more items for carrying. The reinforced bottom support can reduce the gap between the two bottom barrier supports, so that the items are not easy to fall therefrom, making it more convenient to carry items.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A trolley comprises a bottom barrier support and an intermediate plastic connecting piece, wherein an intermediate plastic connecting piece is arranged between two of the bottom barrier supports, a corner bottom support piece is arranged at the outer end corner of the bottom barrier support, a universal wheel with a brake is arranged at the lower end of the corner bottom support piece, a trolley upright is arranged at the upper end of the corner bottom support piece, a corner top connecting piece is arranged at the upper end of the trolley upright, a front and rear cross support is arranged on the corner bottom support piece between the front and rear corner top connecting pieces on the same side, an outer folding support is arranged on the corner bottom support piece between the left and right corner top connecting pieces on the same side, the corner top connecting piece and the intermediate plastic connecting piece are movably connected through an inner rotating support, a reinforced bottom support is arranged at the upper ends of the two intermediate plastic connecting pieces, and a carrying pull rod mechanism is arranged between the two front corner bottom supports.

[0008] Through the above technical scheme: when carrying, the personnel hold the carrying pull rod mechanism on the two front corner bottom supports, so as to pull and carry, the corner bottom support can be pulled and walked due to the universal wheel with brake at the lower end, and when storing items, the two middle plastic connectors are effectively connected and strengthened through the reinforced bottom support, thereby effectively improving the overall bearing capacity, and more items can be placed for carrying, making it more convenient to carry items, the corner top connector, the inner rotating support, the front and rear cross support, the outer folding support, the bottom barrier support, the connection between the corner bottom support and the middle plastic connector are connected as a whole, so that they can be effectively folded and stored.

[0009] The utility model is further configured as follows: the carrying pull rod mechanism includes a recessed block with a pin shaft, a D-shaped handle, an intermediate sleeve, a first rotating plate, a connecting member rotating shaft, an anti-slip column and a pull rod mechanism housing; an intermediate sleeve is provided in the middle of the interior of the pull rod mechanism housing; a D-shaped handle is provided on the upper end of the intermediate sleeve; an anti-slip column is provided on the outer side of the pull rod mechanism housing located on the intermediate sleeve; a first rotating plate is movably provided on the inner sides of both ends of the pull rod mechanism housing through a pin shaft; a recessed block with a pin shaft is movably provided on the outer end of the first rotating plate through a pin shaft; a connecting member rotating shaft is provided on the outer end of the recessed block with a pin shaft; the recessed block with a pin shaft is connected to the corner bottom support member through the connecting member rotating shaft.

[0010] Through the above technical solution: due to the carrying pull rod mechanism structure, it is convenient for people to hold and carry for use.

[0011] The utility model is further configured as follows: the corner bottom support member includes a pull rod limiting recess, a double-headed screw hole column, a first positioning recess block, a second positioning recess block, a third positioning recess block and a locking screw; a locking screw is arranged on the inner side of the double-headed screw hole column, and a pull rod limiting recess plate, a third positioning recess block, a second positioning recess block and a first positioning recess block are arranged on the circumferential outer side of the double-headed screw hole column in a clockwise manner; the lower end of the double-headed screw hole column is connected to the universal wheel with brakes, and the upper end of the double-headed screw hole column is connected to the cart upright through a locking screw; the third positioning recess block is connected to the front and rear cross supports, the second positioning recess block is connected to the bottom blocking support, and the first positioning recess block is connected to the outer folding support.

[0012] Through the above technical solution: due to the bottom support structure of the corner, it is convenient to use the corner positioning.

[0013] The utility model is further configured such that the bottom blocking support includes a first pin shaft, a double-hole arm plate, a cross sleeve block and a second pin shaft, the inner sides of the four corners at the lower end of the cross sleeve block are provided with double-hole arm plates, the cross sleeve block and the double-hole arm plate are movably connected via the second pin shaft, and the outer end of the double-hole arm plate is provided with a first pin shaft.

[0014] Through the above technical solution: because of the bottom blocking support structure, it is convenient to place and use the bottom blocking.

[0015] The utility model is further configured as follows: the intermediate plastic connecting piece includes a positioning block shell, a bottom support sleeve hole, an inner baffle sleeve hole and a partition frame sleeve hole; a bottom support sleeve hole is provided in the middle of the upper end of the positioning block shell; a partition frame sleeve hole is provided on the outer side of the bottom support sleeve hole, and an inner baffle sleeve hole is provided on the outer side of the partition frame sleeve hole; the positioning block shell is connected to the reinforced bottom support through the bottom support sleeve hole; the positioning block shell is connected to the inner rotating support through the inner baffle sleeve hole; and the positioning block shell is connected to the bottom blocking support through the partition frame sleeve hole.

[0016] Through the above technical solution: due to the structure of the middle plastic connecting piece, the middle connection is convenient for use.

[0017] The utility model is further configured as follows: the reinforced bottom support includes an I-shaped shell with an axial rod, a reinforcing support rod and a reinforcing rod pin; a reinforcing support rod is movably connected to the bottom groove of the I-shaped shell with an axial rod through the axial rod, reinforcing rod pins are arranged on both sides of the outer end of the reinforcing support rod, and the reinforcing rod pin is connected to the middle plastic connecting piece.

[0018] Through the above technical solution: due to the strengthening of the bottom supporting structure, it is convenient for pulling and blocking, and the overall bearing capacity is effectively improved.

[0019] The utility model is further configured such that the outer folding support includes an outer rotating plate, a rotating end, a connecting pin and a rotating boss, the two ends of the connecting pin are provided with rotating ends, the outer side of the rotating end is provided with an outer rotating plate, the outer end of the outer rotating plate is provided with a rotating boss, and the outer rotating plate is connected to the corner bottom support member through the rotating boss.

[0020] Through the above technical solution: due to the outer folding support structure, it is convenient to use for side blocking.

[0021] The utility model is further configured as follows: the corner top connecting piece includes a rounded right-angle shell, a first rotating sleeve groove, a second rotating sleeve groove and a locking bolt; a locking bolt is provided on the inner side of the rounded right-angle shell, a first rotating sleeve groove is provided on the inner side of the lower end of the rounded right-angle shell, a second rotating sleeve groove is provided on the outer side of the first rotating sleeve groove, the rounded right-angle shell is connected to the cart upright through a locking bolt, the rounded right-angle shell is connected to the inner rotating support through a pin shaft inside the second rotating sleeve groove, and the rounded right-angle shell is connected to the front and rear cross supports through a pin shaft inside the first rotating sleeve groove.

[0022] Through the above technical solution: due to the top connector structure of the corner, it is convenient to use the corner positioning.

[0023] The utility model is further configured such that the front and rear cross supports include a first cross plate, an assembly pin and a second cross plate, the first cross plate and the second cross plate are cross-arranged at both ends of the assembly pin, the upper end of the second cross plate is connected to the corner bottom support member, the upper end of the first cross plate is connected to the corner bottom support member, the lower end of the first cross plate is connected to the corner top connector, and the lower end of the second cross plate is connected to the corner top connector.

[0024] Through the above technical solution: due to the front and rear cross-support structure, it can be used for front and rear blocking.

[0025] The utility model is further configured such that the cart upright pole comprises an internal support rod and a positioning sleeve rod, the internal support rod is arranged inside the positioning sleeve rod, the internal support rod is connected to the top connecting piece at the corner, and the positioning sleeve rod is connected to the bottom supporting piece at the corner.

[0026] Through the above technical solution: due to the structure of the cart pole, the cart can be used in a telescopic support and can be telescopic when folded.

[0027] The beneficial effects of the utility model are:

[0028] 1. By providing a reinforced bottom support structure, when storing items, the two middle plastic connectors are effectively connected and reinforced through the reinforced bottom support, which can effectively enhance the bottom bearing capacity, thereby increasing the carrying capacity of items, and the reinforced bottom support can reduce the gap between the two bottom barrier supports, so that items are not easy to fall from it, making it more convenient to carry items.

[0029] 2. A reinforced bottom support structure is provided to facilitate blocking and carrying. The reinforced support rod of the reinforced bottom support is through the reinforcing rod pins on both sides of the outer end, so that it can be rotated and folded at the upper limit position of the middle plastic connecting piece. The two reinforced support rods can be effectively connected through the shaft rod I-shaped shell, so that they can be folded and rotated, and the shaft rod I-shaped shell can effectively block the reinforced support rod when unfolded, so that the reinforced support rod can be placed between the two middle plastic connecting pieces, which effectively strengthens the connection, thereby effectively enhancing the bottom bearing capacity, making it easier to place more items for carrying and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a three-dimensional structural schematic diagram of a trolley proposed by the utility model;

[0031] Figure 2 This is a schematic diagram of the structure of a carrying pull rod mechanism of a trolley proposed by the utility model;

[0032] Figure 3 This is a schematic diagram of the structure of a corner bottom support member of a trolley proposed by the utility model;

[0033] Figure 4 This is a schematic diagram of a bottom barrier support structure of a trolley proposed by the utility model;

[0034] Figure 5 This is a schematic diagram of the structure of a middle plastic connecting piece of a trolley proposed by the utility model;

[0035] Figure 6 This is a schematic diagram of a reinforced bottom support structure of a trolley proposed by the utility model;

[0036] Figure 7 This is a schematic diagram of an outer folding support structure of a trolley proposed by the utility model;

[0037] Figure 8 This is a schematic diagram of the structure of a corner top connector of a trolley proposed by the utility model;

[0038] Fig. 9 This is a schematic diagram of the front and rear cross support structure of a trolley proposed by the utility model;

[0039] Fig.10The utility model is a schematic diagram of a trolley upright structure of the trolley.

[0040] In the figure: 1. Corner top connector; 12. Rounded right-angle shell; 13. First rotating sleeve groove; 14. Second rotating sleeve groove; 15. Locking bolt; 2. Inner rotating support; 81. Internal support rod; 82. Positioning sleeve rod; 3. Front and rear cross supports; 31. First cross plate; 32. Assembly pin; 33. Second cross plate; 4. Universal wheel with brake; 5. Outer folding support; 51. Outer rotating plate; 52. Rotating end; 53. Connecting pin; 54. Rotating boss; 6. Strengthening bottom support; 61. I-shaped shell with shaft rod; 62. Strengthening support rod; 63. Strengthening rod pin; 7. Bottom blocking support; 71. First pin; 72. Double-hole arm plate ;73, cross sleeve block;74, second pin shaft;8, cart upright;9, carrying pull rod mechanism;91, recessed block with pin shaft;92, D-shaped handle;93, middle sleeve plate;94, first rotating plate;95, connecting member rotating shaft;96, anti-slip stop column;97, pull rod mechanism shell;10, corner bottom support member;101, pull rod limiting recessed plate;102, double-headed screw hole column;103, first positioning recessed block;104, second positioning recessed block;105, third positioning recessed block;106, locking screw;11, middle plastic connector;111, positioning block shell;112, bottom support sleeve hole;113, inner baffle sleeve hole;114, partition frame sleeve hole. DETAILED DESCRIPTION

[0041] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0042] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0043] Reference Figure 1-Figure 10A trolley comprises a bottom barrier support 7 and an intermediate plastic connector 11, wherein the intermediate plastic connector 11 is arranged between the two bottom barrier supports 7, a corner bottom support 10 is arranged at the outer corner of the bottom barrier support 7, a universal wheel 4 with a brake is arranged at the lower end of the corner bottom support 10, a cart upright 8 is arranged at the upper end of the corner bottom support 10, a corner top connector 1 is arranged at the upper end of the cart upright 8, a front and rear cross support 3 is arranged on the corner bottom support 10 between the front and rear corner top connectors 1 on the same side, an outer folding support 5 is arranged on the corner bottom support 10 between the left and right corner top connectors 1 on the same side, the corner top connector 1 and the intermediate plastic connector 11 are movably connected through an inner rotating support 2, a reinforced bottom support 6 is arranged at the upper ends of the two intermediate plastic connectors 11, and the two front corner bottom supports 1 are arranged on the upper ends of the two intermediate plastic connectors 11. 0 is provided with a carrying pull rod mechanism 9. When in use, a person holds the carrying pull rod mechanism 9 on the two corner bottom support members 10 at the front end, so as to pull and carry. When carrying, the corner bottom support member 10 can be pulled and walked due to the universal wheel 4 with brake at the lower end. When storing items, the two middle plastic connectors 11 are effectively connected and strengthened through the reinforced bottom support 6, thereby effectively improving the overall bearing capacity, and more items can be placed for carrying. At the same time, the corner top connector 1 can also support and reinforce the left and right to avoid shaking when transporting items, making it more convenient to carry items. The corner top connector 1, the inner rotating support 2, the front and rear cross support 3, the outer folding support 5, the bottom barrier support 7, the corner bottom support member 10 and the middle plastic connector 11 are connected as a whole, so that they can be effectively folded and stored.

[0044] Specifically, the carrying pull rod mechanism 9 includes a recessed block 91 with a pin shaft, a D-shaped handle 92, an intermediate sleeve 93, a first rotating plate 94, a connecting member rotating shaft 95, an anti-slip blocking column 96 and a pull rod mechanism housing 97. The intermediate sleeve 93 is arranged in the middle of the interior of the pull rod mechanism housing 97, and the D-shaped handle 92 is arranged on the upper end of the intermediate sleeve 93. The outer side of the pull rod mechanism housing 97 is provided with an anti-slip blocking column 96 on the intermediate sleeve 93. The first rotating plate 94 is movably arranged on the inner side of both ends of the pull rod mechanism housing 97 through the pin shaft, and the outer end of the first rotating plate 94 is movably provided with a recessed block 91 with a pin shaft through the pin shaft, and the outer end of the recessed block 91 with a pin shaft is provided with a connecting member rotating shaft 95. The recessed block 91 with a pin shaft is connected to the connecting member. The rotating shaft 95 is connected to the bottom support 10 of the corner, and the pin-shaped recessed block 91 of the carrying pull rod mechanism 9 can be movably connected to the bottom support 10 of the corner through the rotating shaft 95 of the connecting piece, so that it can be rotated when pulling, thereby effectively changing the overall pulling and carrying angle. When pulling, the personnel hold the D-shaped handle 92 at the upper end of the middle sleeve 93 so that it can be held and pulled, and the middle sleeve 93 is prevented from falling out of the pull rod mechanism housing 97 due to the obstruction of the anti-detachment blocking column 96, so that it is effectively blocked when pulling, making it easy to pull. The two ends of the first rotating plate 94 are movably connected to the pin-shaped recessed block 91 and the pull rod mechanism housing 97 through pins, so that it can be deformed when pulling, making it easy to pull and use.

[0045] Specifically, the corner bottom support member 10 includes a pull rod limiting concave plate 101, a double-headed screw hole column 102, a first positioning concave block 103, a second positioning concave block 104, a third positioning concave block 105 and a locking screw 106. The inner side of the double-headed screw hole column 102 is provided with a locking screw 106. The outer side of the circumference of the double-headed screw hole column 102 is provided with a pull rod limiting concave plate 101, a third positioning concave block 105, a second positioning concave block 104 and a first positioning concave block 103 in a clockwise manner. The lower end of the double-headed screw hole column 102 is connected to the universal wheel with brake 4, and the upper end of the double-headed screw hole column 102 is connected to the cart upright 8 through a locking screw 106. The third positioning concave block 105 is connected to the cart upright 8. On the front and rear cross supports 3, the second positioning recess 104 is connected to the bottom blocking support 7, the first positioning recess 103 is connected to the outer folding support 5, the lower end of the double-headed screw hole column 102 of the corner bottom support member 10 is connected to the universal wheel 4 with brake, which is convenient for movement, and the upper end of the double-headed screw hole column 102 is connected to the cart upright 8 by a locking screw 106, so that the cart upright 8 is easy to support and place, the third positioning recess 105 is movably connected to the front and rear cross supports 3, the second positioning recess 104 is movably connected to the bottom blocking support 7, and the first positioning recess 103 is movably connected to the outer folding support 5, so that the whole can be movably deformed and folded for storage.

[0046] Specifically, the bottom blocking support 7 includes a first pin 71, a double-hole arm plate 72, a cross sleeve 73 and a second pin 74. The double-hole arm plates 72 are arranged on the inner sides of the four corners at the lower end of the cross sleeve 73. The cross sleeve 73 and the double-hole arm plate 72 are movably connected by the second pin 74. The outer end of the double-hole arm plate 72 is arranged with a first pin 71. The cross sleeve 73 of the bottom blocking support 7 can movably place the double-hole arm plate 72 due to the second pin 74 on the inner side, so that it can be folded and stored. The outer end of the double-hole arm plate 72 can be movably connected to the outside through the first pin 71, so that it can be folded and stored for use.

[0047] Specifically, the middle plastic connector 11 includes a positioning block housing 111, a bottom support sleeve hole 112, an inner baffle sleeve hole 113 and a partition frame sleeve hole 114. The bottom support sleeve hole 112 is provided in the middle of the upper end of the positioning block housing 111. The outer side of the bottom support sleeve hole 112 is located on the positioning block housing 111 and a partition frame sleeve hole 114 is provided. The outer side of the partition frame sleeve hole 114 is located on the positioning block housing 111 and an inner baffle sleeve hole 113 is provided. The positioning block housing 111 is connected to the reinforced bottom support 6 through the bottom support sleeve hole 112. The positioning block housing 111 is connected to the reinforced bottom support 6 through the bottom support sleeve hole 112. The inner baffle plate hole 113 is connected to the inner rotating support 2, the positioning block shell 111 is connected to the bottom blocking support 7 through the partition frame hole 114, and the positioning block shell 111 of the intermediate plastic connecting part 11 is connected to the reinforced bottom support 6 through the bottom support hole 112, thereby strengthening the bottom support 6 for easy installation and use. The positioning block shell 111 is movably connected to the inner rotating support 2 through the inner baffle plate hole 113, and the positioning block shell 111 is movably connected to the bottom blocking support 7 through the partition frame hole 114, so that the whole can be rotated and folded for storage.

[0048] Specifically, the reinforced bottom support 6 includes an I-shaped shell 61 with an axle rod, a reinforced support rod 62 and a reinforced rod pin 63. The bottom groove of the I-shaped shell 61 with an axle rod is movably connected with the reinforced support rod 62 through the axle rod. Reinforcement rod pins 63 are arranged on both sides of the outer ends of the reinforced support rod 62. The reinforcing rod pin 63 is connected to the middle plastic connecting piece 11. The reinforced support rod 62 of the reinforced bottom support 6 can be rotated and folded at the upper limit position of the middle plastic connecting piece 11 through the reinforcement rod pins 63 on both sides of the outer ends. The two reinforced support rods 62 can be effectively connected through the I-shaped shell 61 with an axle rod, so that they can be folded and rotated, and the I-shaped shell 61 with an axle rod can effectively block the reinforced support rod 62 when unfolded, so that the reinforced support rod 62 can be placed between the two middle plastic connecting pieces 11, which effectively strengthens the connection, thereby effectively enhancing the bottom bearing capacity, making it convenient to place more items for carrying and use.

[0049] Specifically, the outer folding support 5 includes an outer rotating plate 51, a rotating end 52, a connecting pin 53 and a rotating boss 54. The rotating end 52 is provided at both ends of the connecting pin 53, the outer side of the rotating end 52 is provided with the outer rotating plate 51, and the outer end of the outer rotating plate 51 is provided with a rotating boss 54. The outer rotating plate 51 is connected to the corner bottom support 10 through the rotating boss 54. The outer rotating plate 51 of the outer folding support 5 is movably connected to the corner bottom support 10 through the rotating boss 54, so that it can be rotated and folded. The rotating end 52 is movably connected through the connecting pin 53, so that it can be folded and stored.

[0050] Specifically, the corner top connector 1 includes a rounded right-angle shell 12, a first rotating sleeve groove 13, a second rotating sleeve groove 14 and a locking bolt 15. The inner side of the rounded right-angle shell 12 is provided with a locking bolt 15, the inner side of the lower end of the rounded right-angle shell 12 is provided with a first rotating sleeve groove 13, and the outer side of the first rotating sleeve groove 13 is provided on the rounded right-angle shell 12. The second rotating sleeve groove 14 is provided on the outer side of the first rotating sleeve groove 13. The rounded right-angle shell 12 is connected to the cart upright 8 through the locking bolt 15, and the rounded right-angle shell 12 is connected to the cart upright 8 through the internal pin of the second rotating sleeve groove 14. Connected to the inner rotating support 2, the rounded right-angle shell 12 is connected to the front and rear cross supports 3 through the internal pin of the first rotating sleeve groove 13, and the rounded right-angle shell 12 of the corner top connector 1 is connected to the cart upright 8 through the locking bolt 15, so that it can be installed and placed accordingly, the rounded right-angle shell 12 is connected to the inner rotating support 2 through the internal pin of the second rotating sleeve groove 14, and the rounded right-angle shell 12 is connected to the front and rear cross supports 3 through the internal pin of the first rotating sleeve groove 13, so that it can be rotated, folded and stored for use.

[0051] Specifically, the front and rear cross supports 3 include a first cross plate 31, an assembly pin 32 and a second cross plate 33, the first cross plate 31 and the second cross plate 33 are cross-arranged at both ends of the assembly pin 32, the upper end of the second cross plate 33 is connected to the corner bottom support 10, the upper end of the first cross plate 31 is connected to the corner bottom support 10, the lower end of the first cross plate 31 is connected to the corner top connector 1, and the lower end of the second cross plate 33 is connected to the corner top connector 1, the upper end of the second cross plate 33 of the front and rear cross supports 3 is movably connected to the corner bottom support 10, the upper end of the first cross plate 31 is movably connected to the corner bottom support 10, the lower end of the first cross plate 31 is movably connected to the corner top connector 1, the lower end of the second cross plate 33 is movably connected to the corner top connector 1, and the first cross plate 31 and the second cross plate 33 are movably connected by the assembly pin 32, so that they can be folded and stored for use.

[0052] Specifically, the cart upright 8 includes an internal support rod 81 and a positioning sleeve rod 82. The internal support rod 81 is arranged inside the positioning sleeve rod 82. The internal support rod 81 is connected to the corner top connector 1, and the positioning sleeve rod 82 is connected to the corner bottom support member 10. The internal support rod 81 of the cart upright 8 is connected to the corner top connector 1, and the positioning sleeve rod 82 is connected to the corner bottom support member 10. In this way, support can be provided. The internal support rod 81 and the positioning sleeve rod 82 are mutually sleeved, so that they can be used for telescopic support when folded.

[0053] Working principle: When in use, the person holds the carrying pull rod mechanism 9 on the two front corner bottom supports 10 to pull and carry. When carrying, the corner bottom support 10 can be pulled and walked due to the universal wheel 4 with brakes at the lower end. When storing items, the two middle plastic connectors 11 are effectively connected and strengthened through the reinforced bottom support 6, thereby effectively improving the overall bearing capacity, and more items can be placed for carrying, making it more convenient to carry items. The corner top connector 1, the inner rotating support 2, the front and rear cross support 3, the outer folding support 5, the bottom barrier support 7, the corner bottom support 10 and the middle plastic connector 11 are connected as a whole, so that they can be effectively folded and stored.

[0054] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A trolley, comprising a bottom barrier support (7) and an intermediate plastic connecting member (11), characterized in that: An intermediate plastic connector (11) is provided between the two bottom barrier supports (7), a corner bottom support (10) is provided at the outer corner of the bottom barrier support (7), a universal wheel (4) with a brake is provided at the lower end of the corner bottom support (10), a cart upright (8) is provided at the upper end of the corner bottom support (10), a corner top connector (1) is provided at the upper end of the cart upright (8), and a corner bottom connector (1) is provided between the corner top connectors (1) on the same side at the front and rear. The support member (10) is provided with front and rear cross supports (3), an outer folding support (5) is provided on the corner bottom support member (10) between the left and right corner top connectors (1), the corner top connector (1) and the middle plastic connector (11) are movably connected via an inner rotating support (2), a reinforced bottom support (6) is provided at the upper ends of the two middle plastic connectors (11), and a carrying pull rod mechanism (9) is provided between the two corner bottom support members (10) at the front ends.

2. A trolley according to claim 1, characterized in that: The carrying pull rod mechanism (9) comprises a pin-shaft recessed block (91), a D-shaped handle (92), an intermediate sleeve (93), a first rotating plate (94), a connecting member rotating shaft (95), an anti-slip blocking column (96) and a pull rod mechanism housing (97). The intermediate sleeve (93) is arranged in the middle of the pull rod mechanism housing (97), the upper end of the intermediate sleeve (93) is arranged with a D-shaped handle (92), and the outer side of the pull rod mechanism housing (97) is located in the middle. An anti-disengagement column (96) is arranged on the sleeve plate (93), and a first rotating plate (94) is movably arranged on the inner sides of both ends of the pull rod mechanism housing (97) through a pin shaft, and a pin-shaft recessed block (91) is movably arranged on the outer end of the first rotating plate (94) through a pin shaft, and a connecting member rotating shaft (95) is arranged on the outer end of the pin-shaft recessed block (91), and the pin-shaft recessed block (91) is connected to the corner bottom support member (10) through the connecting member rotating shaft (95).

3. A trolley according to claim 1, characterized in that: The corner bottom support member (10) comprises a pull rod limiting concave plate (101), a double-headed screw hole column (102), a first positioning concave block (103), a second positioning concave block (104), a third positioning concave block (105) and a locking screw (106), wherein the locking screw (106) is arranged on the inner side of the double-headed screw hole column (102), and the pull rod limiting concave plate (101), the third positioning concave block (105), the second positioning concave block (104), the third positioning concave block (105) and the locking screw (106) are arranged on the outer side of the circumference of the double-headed screw hole column (102) in a clockwise manner. The double-headed screw hole column (102) has a lower end connected to the universal wheel with brake (4), and the upper end of the double-headed screw hole column (102) is connected to the cart upright (8) through a locking screw (106). The third positioning block (105) is connected to the front and rear cross supports (3), the second positioning block (104) is connected to the bottom blocking support (7), and the first positioning block (103) is connected to the outer folding support (5).

4. A trolley according to claim 1, characterized in that: The bottom blocking support (7) comprises a first pin shaft (71), a double-hole arm plate (72), a cross sleeve block (73) and a second pin shaft (74); the double-hole arm plate (72) is arranged on the inner side of the four corners at the lower end of the cross sleeve block (73); the cross sleeve block (73) and the double-hole arm plate (72) are movably connected via the second pin shaft (74); and the first pin shaft (71) is arranged at the outer end of the double-hole arm plate (72).

5. A trolley according to claim 1, characterized in that: The intermediate plastic connecting member (11) comprises a positioning block shell (111), a bottom support sleeve hole (112), an inner baffle sleeve hole (113) and a partition frame sleeve hole (114); a bottom support sleeve hole (112) is provided in the middle of the upper end of the positioning block shell (111); a partition frame sleeve hole (114) is provided on the outer side of the bottom support sleeve hole (112) and located on the positioning block shell (111); an inner baffle sleeve hole (113) is provided on the outer side of the partition frame sleeve hole (114); the positioning block shell (111) is connected to the reinforced bottom support (6) through the bottom support sleeve hole (112); the positioning block shell (111) is connected to the inner rotating support (2) through the inner baffle sleeve hole (113); and the positioning block shell (111) is connected to the bottom blocking support (7) through the baffle frame sleeve hole (114).

6. A trolley according to claim 1, characterized in that: The reinforced bottom support (6) comprises an I-shaped shell with an axle rod (61), a reinforced support rod (62) and a reinforced rod pin (63); the bottom groove of the I-shaped shell with an axle rod (61) is movably connected to the reinforced support rod (62) via the axle rod; both sides of the outer end of the reinforced support rod (62) are provided with reinforced rod pins (63); and the reinforced rod pins (63) are connected to the middle plastic connecting piece (11).

7. A trolley according to claim 1, characterized in that: The outer folding support (5) comprises an outer rotating plate (51), a rotating end (52), a connecting pin (53) and a rotating boss (54); the rotating end (52) is arranged at both ends of the connecting pin (53); the outer side of the rotating end (52) is arranged at the outer side of the rotating end; the outer end of the outer rotating plate (51) is arranged at the rotating boss (54); the outer rotating plate (51) is connected to the corner bottom support member (10) via the rotating boss (54).

8. A trolley according to claim 1, characterized in that: The corner top connecting member (1) comprises a rounded right angle shell (12), a first rotating sleeve groove (13), a second rotating sleeve groove (14) and a locking bolt (15); a locking bolt (15) is arranged on the inner side of the rounded right angle shell (12); a first rotating sleeve groove (13) is arranged on the inner side of the lower end of the rounded right angle shell (12); a second rotating sleeve groove (14) is arranged on the outer side of the first rotating sleeve groove (13) and located on the rounded right angle shell (12); the rounded right angle shell (12) is connected to the cart upright (8) through the locking bolt (15); the rounded right angle shell (12) is connected to the inner rotating support (2) through the internal pin shaft of the second rotating sleeve groove (14); and the rounded right angle shell (12) is connected to the front and rear cross supports (3) through the internal pin shaft of the first rotating sleeve groove (13).

9. A trolley according to claim 1, characterized in that: The front and rear cross supports (3) include a first cross plate (31), an assembly pin (32) and a second cross plate (33), the first cross plate (31) and the second cross plate (33) are cross-arranged at both ends of the assembly pin (32), the upper end of the second cross plate (33) is connected to the corner bottom support member (10), the upper end of the first cross plate (31) is connected to the corner bottom support member (10), the lower end of the first cross plate (31) is connected to the corner top connector (1), and the lower end of the second cross plate (33) is connected to the corner top connector (1).

10. A trolley according to claim 1, characterized in that: The cart upright pole (8) comprises an internal support rod (81) and a positioning sleeve rod (82), wherein the internal support rod (81) is arranged inside the positioning sleeve rod (82), the internal support rod (81) is connected to the corner top connecting piece (1), and the positioning sleeve rod (82) is connected to the corner bottom supporting piece (10).

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