Detachable frame of cargo-carrying tricycle

Abstract

The utility model belongs to the technical field of frames, and particularly relates to a detachable frame of a cargo tricycle, which comprises a rear frame and a front frame, the rear frame comprises a vertical pipe, a reinforcing shaft sleeve is arranged on the vertical pipe, a reinforcing welding plate is arranged below the reinforcing shaft sleeve, a connecting ring device is arranged at the upper left end of the front frame, and the connecting ring device is connected with the front frame. The reinforcing shaft sleeve and the reinforcing welding plate are arranged on the rear frame, the connecting ring device is arranged on the rear frame, the connecting plate is arranged below the connecting ring device, the reinforcing shaft sleeve is connected with the connecting ring device through a fixing bolt, and the reinforcing welding plate is connected with the connecting plate through a fixing bolt. The frame can be conveniently and rapidly assembled and disassembled, the stress area and the material strength of the connecting position of the front frame and the rear frame are increased, the overall strength of the frame is greatly improved, the requirements for large load and high strength can be met, a whole vehicle can be separately transported during transportation, the transportation efficiency is greatly improved, and the logistics cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle frames, and particularly relates to a detachable vehicle frame for a freight tricycle. Background Art

[0002] Most current bicycle manufacturers adopt the method of purchasing spare parts through the supply chain. The suppliers produce and provide the spare parts, and then the bicycle manufacturers assemble them centrally. This can give play to the industrial cluster effect and greatly reduce the production cost. In this production mode, the transportation efficiency is particularly important. The existing bicycle frames generally adopt an integral type and are welded into one body when leaving the factory. The frame has a large volume. Especially for freight tricycles, their frames are even larger, which is very inconvenient for both transportation and assembly. In addition, after the freight tricycle is assembled and off the production line as a whole in the factory, the overall length, width and height dimensions of the vehicle are large. When using containers for transportation, only 50 to 60 complete vehicles can be loaded in one container, resulting in low transportation efficiency and high transportation cost.

[0003] The patent with the publication number CN215663816U discloses a detachable vehicle frame and a bicycle. The connecting component is fixedly connected to the vertical pipe, the vehicle frame is detachably connected to the connecting component, the connecting head is fixedly connected to the vertical pipe, the spring is fixedly connected to the sliding groove, the fixing bolt is fixedly connected to the spring, and the fixing bolt is threadedly connected to the connecting head, solving the problem that the existing bicycle frame is an integral structure and cannot be disassembled, resulting in inconvenient transportation. However, this device still has some deficiencies. This structure uses connecting parts such as bolts and fixing bolts for connection. Although the disassembly is simple and fast, the connection strength is insufficient. For models like freight tricycles that need to bear large loads and high intensities, this split structure design is difficult to meet the requirements and needs to be further optimized to improve its connection strength.

[0004] Therefore, aiming at the deficiencies of the above technologies, this application proposes a detachable vehicle frame for a freight tricycle that can effectively solve the above technical problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a detachable vehicle frame for a freight tricycle aiming at the deficiencies of the prior art, thereby effectively solving the problems existing in the prior art.

[0006] To achieve the above purpose, the specific technical solution of the utility model is as follows:

[0007] A detachable frame for a cargo tricycle, comprising a rear frame and a front frame. The rear frame includes a riser pipe, on which a reinforcing bushing is provided, and a reinforcing welding plate is provided below the reinforcing bushing. A connecting ring device is provided at the left end of the front frame, and a connecting plate is provided below the connecting ring device. The reinforcing bushing is connected to the connecting ring device by a fixing bolt, and the reinforcing welding plate is connected to the connecting plate by a fixing bolt.

[0008] As a further setting of the above solution, a first positioning threaded hole is formed on the outer wall of the riser pipe. The reinforcing welding plate is fixedly welded to the rear frame, and a second threaded hole is formed on the reinforcing welding plate.

[0009] As a further setting of the above solution, a positioning boss is fixedly welded to the riser pipe, and the positioning boss is located below the first positioning threaded hole.

[0010] As a further setting of the above solution, the reinforcing bushing is provided in two types: reinforcing bushing one and reinforcing bushing two. The reinforcing bushing one is an arc-shaped reinforcing plate, and a first threaded hole is formed on the reinforcing bushing one, and the first threaded hole corresponds to the first positioning threaded hole.

[0011] As a further setting of the above solution, the reinforcing bushing two is arranged as a circular steel pipe. A first threaded hole is formed on the reinforcing bushing two, and the first threaded hole corresponds to the first positioning threaded hole. The reinforcing bushing is fixedly welded to the riser pipe, and the lower end face of the reinforcing bushing is in contact connection with the positioning boss.

[0012] As a further setting of the above solution, the connecting ring device is fixedly connected to the front frame. The connecting ring device includes a connecting ring, the connecting ring is an arc plate and the inner diameter of the connecting ring is the same as the outer diameter of the reinforcing bushing. A first through hole is formed on the connecting ring, and the position of the first through hole corresponds to that of the first threaded hole. A second through hole is formed on the connecting plate, and the second through hole corresponds to the second threaded hole.

[0013] As a further setting of the above solution, symmetric wing plates are provided at both ends of the connecting ring, and through holes are formed on the wing plates.

[0014] As a further setting of the above solution, an auxiliary fixing device is provided between the wing plates. The auxiliary fixing device includes a rubber cushion block, through which an adjusting bolt is connected. The adjusting bolt is connected in the through hole, and an adjusting nut is threadedly connected to one end of the adjusting bolt. A circular groove is formed on the rubber cushion block, and the circular groove is in fit connection with the outer wall of the reinforcing bushing.

[0015] Working principle of the utility model: Weld the reinforcing bushing on the riser pipe, align the first positioning threaded hole with the first threaded hole, weld the reinforcing welding plate on the rear frame below the reinforcing bushing. During assembly, rotatably connect the connecting ring device to the outer wall of the reinforcing bushing. At this time, the connecting ring and the reinforcing bushing are coaxial. Swing the front frame so that the first threaded hole coincides with the first through hole, and at the same time, the connecting plate is in contact and connected with the reinforcing welding plate, and the second threaded hole completely coincides with the second through hole. Use fixing bolts to fixedly connect the reinforcing bushing with the connecting ring and the reinforcing welding plate with the connecting plate. The fixing bolts are simultaneously threadedly fastened to the first positioning threaded hole and the first threaded hole, and rely on the riser pipe to further increase the connection strength of the frame.

[0016] The utility model has the following beneficial effects:

[0017] By arranging the reinforcing bushing and the reinforcing welding plate on the rear frame, cooperating with the connecting ring device, the connecting plate and the auxiliary fixing device, the frame can be assembled and disassembled conveniently and quickly, providing greater flexibility. It is easier to adjust the size, shape and configuration of the frame. At the same time, the stress area and material strength at the connection between the front frame and the rear frame are increased, greatly improving the overall strength of the frame, and meeting the requirements of large load and high strength. In addition, when the whole vehicle is transported, the vehicle can be disassembled and transported separately, and then assembled into a whole vehicle after arriving at the destination. The packing quantity in a container can be increased to 110 to 120 units, greatly improving the transportation efficiency and reducing the logistics cost. Description of the drawings

[0018] Figure 1 is the external view schematic diagram of the utility model;

[0019] Figure 2 is the rear frame schematic diagram of Embodiment 1 of the utility model;

[0020] Figure 3 is the front frame schematic diagram of Embodiment 1 of the utility model;

[0021] Figure 4 is the external view schematic diagram of the rear frame of Embodiment 2 of the utility model;

[0022] Figure 5 is the external view schematic diagram of the front frame of Embodiment 2 of the utility model;

[0023] Figure 6 is the partial schematic diagram of the front frame of Embodiment 2 of the utility model;

[0024] Figure 7 is the schematic diagram of the auxiliary fixing device of Embodiment 2 of the utility model.

[0025] 1. Rear frame; 2. Reinforcing bushing; 3. Auxiliary fixing device; 4. Reinforcing welding plate; 5. Front frame; 6. Fixing bolt; 101. Upright pipe; 102. Positioning boss; 103. First positioning threaded hole; 2a. First reinforcing bushing; 2b. Second reinforcing bushing; 201. First threaded hole; 301. Rubber cushion block; 3011. Round groove; 302. Adjusting bolt; 303. Adjusting nut; 401. Second threaded hole; 501. Connecting ring device; 5011. Connecting ring; 5012. First through hole; 5013. Wing plate; 5014. Through hole; 502. Connecting plate; 5021. Second through hole. Detailed implementation mode

[0026] In order to enable those skilled in the art to better understand the solution of this application, the following will clearly and completely describe the technical solutions in the embodiments of this application with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

[0027] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following will refer to the attached Figures 1 to 7 drawings and describe this application in detail in combination with the embodiments. Embodiment 1

[0028] As Figure 1 shown, this embodiment discloses a detachable frame of a freight tricycle. The rear frame 1 includes an upright pipe 101. A reinforcing bushing 2 is arranged on the upright pipe 101. A reinforcing welding plate 4 is arranged below the reinforcing bushing 2. A connecting ring device 501 is arranged at the left end of the front frame 5. A connecting plate 502 is arranged below the connecting ring device 501. The reinforcing bushing 2 and the connecting ring device 501 are connected by a fixing bolt 6. The reinforcing welding plate 4 and the connecting plate 502 are connected by a fixing bolt 6.

[0029] As Figure 2 、 Figure 3 shown, a first positioning threaded hole 103 is opened on the outer wall of the upright pipe 101. The reinforcing welding plate 4 is fixedly welded on the rear frame 1 and is located below the positioning boss 102. A second threaded hole 401 is opened on the reinforcing welding plate 4. The first reinforcing bushing 2a is an arc-shaped reinforcing plate. A first threaded hole 201 is opened on the first reinforcing bushing 2a. The first reinforcing bushing 2a is fixedly welded on the upright pipe 101. The first threaded hole 201 corresponds to the first positioning threaded hole 103.

[0030] The connecting ring device 501 is fixedly connected to the front frame 5. The connecting ring device 501 includes a connecting ring 5011. The connecting ring 5011 is an arc plate and the inner diameter of the connecting ring 5011 is the same as the outer diameter of the first reinforcing bushing 2a. A first through hole 5012 is formed in the connecting ring 5011, and the first through hole 5012 corresponds to the position of the first threaded hole 201. A second through hole 5021 is formed in the connecting plate 502, and the second through hole 5021 corresponds to the second threaded hole 401.

[0031] Working process: Weld the first reinforcing bushing 2a to the riser 101 so that the first positioning threaded hole 103 coincides with the first threaded hole 201. Weld the reinforcing plate 4 to the rear frame 1 below the first reinforcing bushing 2a. During assembly, rotatably connect the connecting ring device 501 to the outer wall of the first reinforcing bushing 2a. At this time, the connecting ring 5011 and the first reinforcing bushing 2a are coaxial. Swing the front frame 5 so that the first threaded hole 201 coincides with the first through hole 5012. At the same time, the connecting plate 502 is in contact connection with the reinforcing plate 4, and the second threaded hole 401 coincides completely with the second through hole 5021. Use the fixing bolt 6 to fixedly connect the first reinforcing bushing 2a with the connecting ring 5011 and the reinforcing plate 4 with the connecting plate 502. The fixing bolt 6 is also threadedly fastened to the first positioning threaded hole 103 and the first threaded hole 201, and rely on the riser 101 to further increase the connection strength of the frame. Embodiment 2

[0032] Embodiment 2 discloses a detachable frame of a cargo tricycle which is an improved design based on Embodiment 1. The same parts as those in Embodiment 1 will not be described again. The following will be described in conjunction with Figure 4 、 Figure 5 、 Figure 6 and Figure 7 for illustration.

[0033] As Figure 3 、 Figure 4 shown, a positioning boss 102 is fixedly welded on the riser 101. The positioning boss 102 is located below the first positioning threaded hole 103. The second reinforcing bushing 2b is arranged as a circular steel pipe. A first threaded hole 201 is formed in the second reinforcing bushing 2b. The first threaded hole 201 corresponds to the first positioning threaded hole 103. The second reinforcing bushing 2b is fixedly welded to the riser 101, and the lower end surface of the second reinforcing bushing 2b is in contact connection with the positioning boss 102.

[0034] Both ends of the connecting ring 5011 are provided with symmetric wing plates 5013. Through holes 5014 are formed in the wing plates 5013. An auxiliary fixing device 3 is arranged between the wing plates 5013. The auxiliary fixing device 3 includes a rubber cushion block 301. An adjusting bolt 302 is connected through the rubber cushion block 301. The adjusting bolt 302 is connected in the through hole 5014. One end of the adjusting bolt 302 is threadedly connected with an adjusting nut 303. A circular groove 3011 is formed in the rubber cushion block 301. The circular groove 3011 is in fit connection with the wall of the second strong shaft sleeve 2b.

[0035] Working process: Weld the second strong shaft sleeve 2b on the riser pipe 101. The first positioning threaded hole 103 coincides with the first threaded hole 201. Weld the strengthening welding plate 4 on the rear vehicle frame 1 below the second strong shaft sleeve 2b. During assembly, extrude the two wing plates 5013 outwards to generate elastic deformation, and the gap between the wing plates 5013 becomes larger. The second strong shaft sleeve 2b passes through the wing plates 5013 and is rotatably connected to the inner wall of the connecting ring 5011. The connecting ring 5011 and the second strong shaft sleeve 2b are coaxial. Swing the front vehicle frame 5. The first threaded hole 201 coincides with the first through hole 5012. The connecting plate 502 is in corresponding contact connection with the strengthening welding plate 4. The second threaded hole 401 completely coincides with the second through hole 5021. Use the fixing bolt 6 to fixedly connect the second strong shaft sleeve 2b with the connecting ring 5011, and the strengthening welding plate 4 with the connecting plate 502. Place the rubber cushion block 301 between the two wing plates 5013. The circular groove 3011 is in fit connection with the outer wall of the second strong shaft sleeve 2b. The adjusting bolt 302 passes through the wing plate 5013 and the rubber cushion block 301. Tighten the adjusting nut 303. The two wing plates 5013 are pressed to approach each other. After the rubber cushion block 302 is extruded, it applies pressure to the second strong shaft sleeve 2b. Cooperating with the connecting ring 5011, the connection strength between the second strong shaft sleeve 2b and the connecting ring device 501 is further enhanced.

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0037] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only includes an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A detachable frame for a cargo tricycle, comprising a rear frame and a front frame, characterized in that, The rear frame includes a vertical pipe, on which a reinforcing bushing is provided, and a reinforcing welding plate is provided below the reinforcing bushing. A connecting ring device is provided at the left end of the front frame, and a connecting plate is provided below the connecting ring device. The reinforcing bushing is connected to the connecting ring device by a fixing bolt, and the reinforcing welding plate is connected to the connecting plate by a fixing bolt.

2. The detachable frame of the cargo tricycle according to claim 1, characterized in that, A first positioning threaded hole is formed on the outer wall of the vertical pipe. The reinforcing welding plate is fixedly welded to the rear frame, and a second threaded hole is formed on the reinforcing welding plate.

3. The detachable frame of the cargo tricycle according to claim 2, characterized in that, A positioning boss is fixedly welded on the vertical pipe, and the positioning boss is located below the first positioning threaded hole.

4. The detachable frame of the cargo tricycle according to claim 1, wherein, The reinforcing bushing is provided in two types: reinforcing bushing one and reinforcing bushing two. The reinforcing bushing one is an arc-shaped reinforcing plate, and a first threaded hole is formed on the reinforcing bushing one. The first threaded hole corresponds to the first positioning threaded hole.

5. The detachable frame of the cargo tricycle according to claim 4, characterized in that, The reinforcing bushing two is arranged as a circular steel pipe. A first threaded hole is formed on the reinforcing bushing two. The first threaded hole corresponds to the first positioning threaded hole. The reinforcing bushing is fixedly welded on the vertical pipe, and the lower end surface of the reinforcing bushing is in contact connection with the positioning boss.

6. The detachable frame of the cargo tricycle according to claim 1, wherein The connecting ring device is fixedly connected to the front frame. The connecting ring device includes a connecting ring. The connecting ring is an arc plate and the inner diameter of the connecting ring is the same as the outer diameter of the reinforcing bushing. A first through hole is formed on the connecting ring. The first through hole corresponds to the position of the first threaded hole. A second through hole is formed on the connecting plate. The second through hole corresponds to the second threaded hole.

7. The detachable frame of the cargo tricycle according to claim 6, characterized in that, Symmetrical wing plates are provided at both ends of the connecting ring, and through holes are formed on the wing plates.

8. The detachable frame of the cargo tricycle according to claim 7, characterized in that, An auxiliary fixing device is provided between the wing plates. The auxiliary fixing device includes a rubber cushion block. An adjusting bolt is penetrated and connected on the rubber cushion block. The adjusting bolt is connected in the through hole. One end of the adjusting bolt is threadedly connected with an adjusting nut. A circular groove is formed on the rubber cushion block. The circular groove is in fit connection with the outer wall of the reinforcing bushing.

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