Hand buggy

Abstract

The utility model relates to the technical field of cargo transportation, and discloses a hand buggy which comprises two parallel frame cylinders, a connecting rod is fixed between the bottoms of the frame cylinders, a U-shaped support is rotatably installed on the connecting rod, connecting assemblies are arranged on the rear sides of the frame cylinders and the connecting rod, walking wheels are rotatably installed on the connecting assemblies, and the U-shaped support is connected with the walking wheels. A C-shaped frame is arranged on one side of the connecting assembly. Compared with a traditional welding mode, the frame cylinder is detachably connected with the walking wheel through the connecting assembly, the threaded connection mode is simple and convenient in process and lower in manufacturing cost, meanwhile, when the connecting frame or the walking wheel is damaged, the connecting frame or the walking wheel can be independently detached and replaced, and the two side plates and the basically-formed connecting frame can carry out double-face load bearing and are not prone to deformation.

Description

Technical Field

[0001] The utility model relates to the technical field of cargo transportation, in particular to a handcart. Background Art

[0002] A handcart is a small transport tool with wheels and handles, designed for people to push or pull by hand to easily carry heavy objects or goods. It is mainly used for shopping, going out, etc. It is also one of the essential products for small and medium-sized business operators to go out for business.

[0003] The existing cargo trolleys are fixed by welding between the frame and the running wheels through a connecting frame, and the welding process is relatively complicated. When the connecting frame is damaged, it cannot be replaced separately, resulting in high maintenance costs.

[0004] So we proposed a handcart to solve the above problems. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] In view of the deficiencies of the prior art in the above background technology, the purpose of the present utility model is to provide a handcart to solve the problems raised in the above background technology.

[0007] (II) Technical solution

[0008] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0009] A handcart, comprising two frame tubes arranged in parallel, a connecting rod is fixed between the bottoms of the frame tubes, a U-shaped bracket is rotatably mounted on the connecting rod, a connecting assembly is arranged at the rear of the frame tubes and the connecting rod, a walking wheel is rotatably mounted on the connecting assembly, and a C-shaped frame is arranged on one side of the connecting assembly;

[0010] The connecting assembly includes two parallel side plates and a base plate fixed between the two side plates, the base plate and the side wall of the frame tube are both provided with a first thread groove, the base plate and the side wall of the connecting rod are both provided with a second thread groove, a first fixing bolt is threadedly connected in the first thread groove, and a second fixing bolt is threadedly connected in the second thread groove.

[0011] Furthermore, a sleeve communicating with the first thread groove is arranged inside the frame tube, and a first nut threadably connected with the first fixing bolt is embedded inside the sleeve.

[0012] Furthermore, the second fixing bolt passes through the second thread grooves on the base plate and the side wall of the connecting rod in sequence and is threadedly connected to the second nut.

[0013] Furthermore, the first fixing bolt and the second fixing bolt are both triangular thread screws, and the first nut and the second nut are both hexagonal nuts.

[0014] Preferably, the base plate is provided with a first arc groove and a second arc groove which respectively fit with the frame tube and the connecting rod.

[0015] Furthermore, two first thread grooves are provided on the first arc groove and are arranged vertically, and the second thread groove is provided on the second arc groove and is horizontally located between the two first thread grooves.

[0016] Preferably, a gripping rod is inserted into the frame tube, and a locking mechanism for fixing the gripping rod is provided between the two frame tubes.

[0017] Furthermore, the C-shaped frame is fixedly mounted on the inner side of the side plate and is clamped with the rear end of the U-shaped bracket, and its lower part is inclined toward a side away from the connecting rod.

[0018] Three beneficial effects

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] The frame tube is detachably connected to the traveling wheel through a connecting assembly. The threaded connection is simpler and has a lower manufacturing cost than traditional welding. At the same time, when the connecting frame or the traveling wheel is damaged, they can be disassembled and replaced separately. The two side panels and the basically formed connecting frame can bear load on both sides and are not easily deformed. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the rear structure of the handcart of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the connecting components of the handcart of the utility model;

[0023] Figure 3 The utility model is a schematic diagram of the internal cross-sectional structure of the frame tube of the handcart.

[0024] In the figure: frame tube 1, sleeve 11, first nut 12, connecting rod 2, U-shaped bracket 3, walking wheel 4, connecting assembly 5, side plate 51, base plate 52, first arc groove 53, second arc groove 54, first thread groove 55, second thread groove 56, first fixing bolt 57, second fixing bolt 58, second nut 59, C-shaped frame 6, grip rod 7, locking mechanism 8. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all of the embodiments. It should be noted that the words "front", "back", "left", "right", "up" and "down" used in the following description refer to the directions in the drawings, and the words "bottom surface" and "top surface", "inside" and "outside" refer to the directions toward or away from the geometric center of a specific component, respectively. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-3 As shown, the utility model provides a handcart, including two parallel frame tubes 1, a connecting rod 2 is fixed between the bottoms of the frame tubes 1, both ends of the connecting rod 2 pass through the two frame tubes 1 and extend outwards, a U-shaped bracket 3 is rotatably installed on the connecting rod 2, a connecting assembly 5 is arranged on the rear sides of the frame tubes 1 and the connecting rod 2, a walking wheel 4 is rotatably installed on the connecting assembly 5, and a C-shaped frame 6 is arranged on one side of the connecting assembly 5.

[0027] like Figure 2 As shown, the connecting assembly 5 includes a side plate 51, a base plate 52, a first fixing bolt 5, a second fixing bolt 58 and a second nut 59. The side plate 51 is a triangular structure and has two of them. The base plate 52 is fixed between the two side plates 51 and forms a connecting frame with them. The walking wheel 4 is rotatably installed between the two side plates 51. The triangular structure cooperates with the two side plates 51 to carry out double-sided load-bearing, thereby improving the load-bearing capacity. The base plate 52 is provided with a first arc groove 53 and a second arc groove 54 that are respectively fitted with the frame tube 1 and the connecting rod 2. The first arc groove 53 and the frame tube 1 are arranged in an up-and-down manner. There are two first thread grooves 55, and the second arc groove 54 and the connecting rod 2 are provided with a second thread groove 56. The two first thread grooves 55 and the second thread groove 56 are distributed in a triangular shape. A sleeve 11 connected to the first thread groove 55 is fixed on the inner side wall of the frame tube 1. The sleeve 11 is embedded with a first nut 12. The first fixing bolt 5 passes through the first arc groove 53 and the first thread groove 55 on the frame tube 1 in sequence and is threadedly connected to the first nut 12. The second fixing bolt 58 passes through the second thread groove 56 on the side wall of the base plate 52 and the connecting rod 2 in sequence and is threadedly connected to the second nut 59.

[0028] The two side plates 51 and the base plate 52 are formed by integral stamping. During installation, the first arc groove 53 and the second arc groove 54 on the base plate 52 are first fitted onto the frame tube 1 and the connecting rod 2 respectively, so that the first thread groove 55 and the second thread groove 56 on the base plate 52 correspond to the first thread groove 55 and the second thread groove 56 on the frame tube 1 and the connecting rod 2 respectively. Then, the first fixing bolt 5 passes through the first arc groove 53 and the first thread groove 55 on the frame tube 1 in sequence and is threadedly connected with the first nut 12. The second fixing bolt 58 passes through the second thread groove 56 on the side wall of the base plate 52 and the connecting rod 2 in sequence and the second nut 59 is tightened on the second fixing bolt 58 to complete the connection between the walking wheel 4 and the frame tube 1. Otherwise, it can be disassembled. When the walking wheel 4 or the connecting component 5 is damaged, it can be replaced separately to reduce the cost of use.

[0029] As a preferred technical solution of the present utility model: the C-shaped frame 6 is fixedly mounted on the inner side of the side plate 51 and is clamped with the rear end of the U-shaped bracket 3, and its lower part is inclined to the side away from the connecting rod 2. When the cart is in use, the U-shaped bracket 3 and the frame tube 1 are in a vertical state. When the rear end of the U-shaped bracket 3 is clamped into the C-shaped frame 6, the U-shaped bracket 3 is limited. At the same time, since the lower end of the C-shaped frame 6 is tilted backward, it will not cause obstruction to the U-shaped bracket 3 when it rotates.

[0030] As a preferred technical solution of the present utility model: a grip rod 7 is inserted in the frame tube 1, and a locking mechanism 8 for fixing the grip rod 7 is arranged between the two frame tubes 1. The grip rod 7 is a U-shaped rod, and its two ends are respectively inserted in the two frame tubes 1. The locking mechanism 8 adopts the structure disclosed by a telescopic rod with a self-locking function with application number 202221833437X. The telescopic grip rod 7 can increase the cargo capacity of the cart and reduce the number of transportation times.

[0031] In the description of the present invention, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. In this article, the meaning of "plurality" is two or more, unless otherwise clearly and specifically limited.

[0032] For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances; for technicians in this field, they can still modify the technical solutions recorded in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A handcart, comprising two parallel frame tubes (1), characterized in that: A connecting rod (2) is fixed between the bottoms of the frame tube (1), a U-shaped bracket (3) is rotatably mounted on the connecting rod (2), a connecting assembly (5) is arranged at the rear of the frame tube (1) and the connecting rod (2), a walking wheel (4) is rotatably mounted on the connecting assembly (5), and a C-shaped frame (6) is arranged on one side of the connecting assembly (5); The connecting assembly (5) comprises two side plates (51) arranged in parallel and a base plate (52) fixed between the two side plates (51); the base plate (52) and the side wall of the frame tube (1) are both provided with a first thread groove (55); the base plate (52) and the side wall of the connecting rod (2) are both provided with a second thread groove (56); the first thread groove (55) is internally threadedly connected to a first fixing bolt (57); the second thread groove (56) is internally threadedly connected to a second fixing bolt (58).

2. A handcart according to claim 1, characterized in that: A sleeve (11) communicating with the first thread groove (55) is arranged inside the frame tube (1), and a first nut (12) threadedly connected with the first fixing bolt (57) is embedded inside the sleeve (11).

3. A handcart according to claim 2, characterized in that: The second fixing bolt (58) passes through the second thread groove (56) on the base plate (52) and the side wall of the connecting rod (2) in sequence and is threadedly connected to the second nut (59).

4. A handcart according to claim 3, characterized in that: The first fixing bolt (57) and the second fixing bolt (58) are both triangular thread screws, and the first nut (12) and the second nut (59) are both hexagonal nuts.

5. A handcart according to claim 3, characterized in that: The base plate (52) is provided with a first arc groove (53) and a second arc groove (54) which respectively fit with the frame tube (1) and the connecting rod (2).

6. A handcart according to claim 5, characterized in that: Two first thread grooves (55) are provided on the first arc groove (53) and are arranged vertically. The second thread groove (56) is provided on the second arc groove (54) and is horizontally located between the two first thread grooves (55).

7. A handcart according to claim 1, characterized in that: A gripping rod (7) is inserted into the frame tube (1), and a locking mechanism (8) for fixing the gripping rod (7) is provided between the two frame tubes (1).

8. A handcart according to claim 1, characterized in that: The C-shaped frame (6) is fixedly mounted on the inner side of the side plate (51) and is clamped with the rear end of the U-shaped bracket (3), and its lower part is inclined toward a side away from the connecting rod (2).

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