Trolley

Abstract

The utility model discloses a trolley, which belongs to the field of constructional engineering and comprises a roller mechanism, a frame and a basket, the roller mechanism comprises a first roller, a turnover part and a second roller, the first roller is rotatably connected with the bottom of the frame, the turnover part is adjacent to the first roller and is connected with the bottom of the frame, and the second roller is rotatably connected with the frame. The end, away from the frame, of the overturning piece is connected with the second rolling wheel and used for driving the second rolling wheel to be stored below the frame or moved out of the lower portion of the frame to support the frame, the trolley can achieve different supporting effects according to different loads, the portability and stability of the trolley are effectively improved, the situation that objects loaded in the basket are too heavy, and the trolley is convenient to use. And the problem that the barrow with a single wheel is overturned due to unstable gravity center is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of construction engineering, in particular to a wheelbarrow. Background Art

[0002] On construction sites, wheelbarrows are often used to transport small quantities of goods over short distances. Common wheelbarrows consist of a wheel bucket and a wheel frame. For example, the utility model patent for a wheelbarrow with an anti-tilt structure for construction is provided with authorization announcement number CN217753792U, which includes a frame and a loading hopper. A storage bin is provided between the upper end of the frame and the bottom of the loading hopper. A rotating seat is provided on one side of the outer surface of the storage bin. A rotating rod is axially connected between the inner side surfaces of the rotating seat. A support rod is provided downward on the bottom surface of the rotating rod. The support area of ​​the frame is expanded by the support rod to prevent tilting during loading.

[0003] However, the objects loaded on the trolley vary in weight. When faced with heavy objects, since there is only one wheel under the frame, and the wheel has the dual functions of guiding and bearing, when the staff lifts the frame and pushes it, the support rod cannot support the frame, and the staff needs to spend more effort to maintain the overall balance and stability of the frame, that is, the stability of the trolley is poor. Utility Model Content

[0004] In view of this, it is necessary to provide a trolley to solve the technical problem of poor stability of single-wheel trolleys in the prior art during movement.

[0005] The utility model provides a trolley, comprising a roller mechanism, a frame and a basket;

[0006] The roller mechanism includes a first roller, a flip member and a second roller, wherein the first roller is rotatably connected to the bottom of the frame, the flip member is disposed adjacent to the first roller and connected to the bottom of the frame, and the end of the flip member away from the frame is connected to the second roller and is used to drive the second roller to be stored under the frame or moved out from under the frame to support the frame;

[0007] The vehicle basket is fixedly connected to the top of the vehicle frame.

[0008] In one embodiment, the flip member includes a guide column, a hinge block and a pair of connecting frames, one end of the guide column is fixedly connected to the bottom of the frame, the other end of the guide column is rotatably connected to the top of the hinge block, and the two ends of the two connecting frames are respectively hinged to the two ends of the second roller and the two ends of the hinge block.

[0009] In one embodiment, a side of the hinge block facing away from the first roller is fixedly connected to a limiting block, and the limiting block abuts against the two connecting frames.

[0010] In one of the embodiments, a first spring and a sliding block are provided on one side of the limiting block close to the two connecting frames, and two ends of the first spring are fixedly connected to the sliding block and the limiting block respectively.

[0011] In one of the embodiments, a second spring is provided on the side wall of the limiting block away from the first spring, and two ends of the second spring are respectively fixedly connected to the bottom of the frame and the limiting block.

[0012] In one of the embodiments, the angle between the horizontal plane where the limit block is located and the horizontal plane where the frame is located is 60°.

[0013] In one of the embodiments, a reinforcing rib is fixedly connected to the bottom of the frame.

[0014] In one of the embodiments, first brackets are provided on both sides of the first roller, and two ends of the first brackets are fixedly connected to the top of the frame and the bottom of the basket respectively.

[0015] In one embodiment, a second bracket is disposed on both sides of the second roller, and the second bracket is fixedly connected to the bottom of the frame.

[0016] In one embodiment, a round handle is provided at the end of the frame away from the first roller.

[0017] Compared with the prior art, the trolley provided by the utility model has the following beneficial effects:

[0018] The first roller is rotatably connected to the bottom of the frame, the flip member is disposed adjacent to the first roller and connected to the bottom of the frame, and the flip member is used to drive the second roller to be stored under the frame or to move out from under the frame to support the frame, so that the trolley has two states:

[0019] 1. When the cargo is light, there is no need to use the second roller, only the first roller can be used. The second roller is stored under the frame and does not affect the use of the first roller;

[0020] Second, when the goods are heavy, the second roller is moved out from under the frame through the flip member and supports the frame. At this time, the first roller and the second roller jointly support the trolley.

[0021] In summary, the trolley can achieve different supporting effects according to different loads, effectively improving the portability and stability of the trolley, and avoiding the problem of a single-wheel trolley tipping over due to unstable center of gravity caused by the basket being loaded with too heavy items.

[0022] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the preferred embodiments of the utility model are described in detail as follows in conjunction with the accompanying drawings. The specific implementation method of the utility model is given in detail by the following embodiments and their drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0024] Figure 1 A three-dimensional diagram of a trolley provided by the utility model;

[0025] Figure 2 for Figure 1 Side view during loading and unloading;

[0026] Figure 3 for Figure 1 Side view during transport;

[0027] Figure 4 for Figure 1 Schematic diagram of the structure of the second roller.

[0028] The accompanying drawings are marked as follows: 1. roller mechanism; 11. first roller; 12. flip member; 121. guide column; 122. hinge block; 1221. limit block; 1222. first spring; 1223. slider; 123. connecting frame; 124. second spring; 13. second roller; 2. frame; 21. reinforcing rib; 22. first bracket; 23. second bracket; 24. round handle; 3. basket. DETAILED DESCRIPTION

[0029] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0030] See also Figure 1 - Figure 4 The utility model provides a trolley, comprising a roller mechanism 1, a frame 2 and a basket 3;

[0031] The roller mechanism 1 includes a first roller 11, a flip member 12 and a second roller 13. The first roller 11 is rotatably connected to the bottom of the frame 2. The flip member 12 is disposed adjacent to the first roller 11 and connected to the bottom of the frame 2. The end of the flip member 12 away from the frame 2 is connected to the second roller 13 and is used to drive the second roller 13 to be stored under the frame 2 or moved out from the bottom of the frame 2 to support the frame 2.

[0032] The vehicle basket 3 is fixedly connected to the top of the vehicle frame 2 .

[0033] Specifically, the first roller 11 is rotatably connected to the bottom of the frame 2, the flip member 12 is disposed adjacent to the first roller 11 and connected to the bottom of the frame 2, and the flip member 12 is used to drive the second roller 13 to be stored under the frame 2 or to move out from under the frame 2 to support the frame 2, so that the trolley has two states:

[0034] 1. When the cargo is light, the second roller 13 is not needed and only the first roller 11 is used. The second roller 13 is stored under the frame 2 and does not affect the use of the first roller 11.

[0035] Second, when the cargo is heavy, the second roller 13 is moved out from under the frame 2 through the flip member 12 and supports the frame 2. At this time, the first roller 11 and the second roller 13 jointly support the trolley.

[0036] In summary, the trolley can achieve different supporting effects according to different loads, effectively improving the portability and stability of the trolley, and avoiding the problem of the single-wheel trolley tipping over due to unstable center of gravity caused by the basket 3 being loaded with too heavy items.

[0037] First, stabilize the frame 2 to ensure that the basket 3 does not tip over during the loading process; then, after the materials are loaded, the staff lifts the cart, removes the tools for stabilizing the frame 2, and uses the flip piece 12 to make the first roller 11 and the second roller 13 jointly support the frame 2; finally, the staff pushes the frame 2.

[0038] Furthermore, in the present embodiment, the flip member 12 includes a guide column 121, an articulated block 122, and a pair of connecting frames 123. One end of the guide column 121 is fixedly connected to the bottom of the vehicle frame 2, and the other end of the guide column 121 is rotatably connected to the top of the articulated block 122. The two ends of the two connecting frames 123 are respectively hinged to the two ends of the second roller 13 and the two ends of the articulated block 122. Specifically, on the one hand, the guide column 121 is rotatably connected to the top of the articulated block 122 through a bearing, so that the articulated block 122 can drive the connecting frame 123 and the second roller 13 to rotate, thereby realizing the second roller 13 rolling in different directions. On the other hand, the connecting frame 123 is hinged to the two ends of the articulated block 122, so that the connecting frame 123 can drive the second roller 13 to be stored under the vehicle frame 2 without affecting the rotation of the first roller 11.

[0039] Furthermore, in this embodiment, a side of the hinge block 122 facing away from the first roller 11 is fixedly connected to a limiting block 1221 , and the limiting block 1221 abuts against the two connecting frames 123 .

[0040] Furthermore, in this embodiment, a first spring 1222 and a slider 1223 are provided on one side of the limit block 1221 close to the two connecting frames 123, and both ends of the first spring 1222 are respectively fixedly connected to the slider 1223 and the limit block 1221. Specifically, when the connecting frame 123 abuts against the slider 1223, it cannot continue to rotate. When the trolley passes through an uneven road surface during movement, the first spring 1222 can effectively alleviate the bumps of the second roller 13 when passing through the rough road surface, so that after the vibration generated by the bumps is transmitted to the first spring 1222, the bumps felt by the staff can be alleviated, thereby improving the comfort of the staff in pushing the trolley.

[0041] Furthermore, in this embodiment, the side wall of the limit block 1221 away from the first spring 1222 is provided with a second spring 124, and the two ends of the second spring 124 are respectively fixedly connected to the bottom of the frame 2 and the limit block 1221. Specifically, the second spring 124 is used to limit the rotation of the hinge block 122. In order to ensure the normal operation of the second roller 13 and the first spring 1222 to better alleviate the vibration of the connecting frame 123, the limit block 1221 is required to always be away from the first roller 11. The setting of the second spring 124 not only satisfies the function of the second roller 13 as a guide wheel, but also avoids excessive rotation of the hinge block 122, thereby making the effect better during the pushing process of the staff.

[0042] Furthermore, in this embodiment, the angle between the horizontal plane where the limit block 1221 is located and the horizontal plane where the frame 2 is located is 60°. Specifically, after the materials in the basket 3 are placed, the staff lifts the frame 2, and the second roller 13 will rotate downward with its own gravity. At this time, the staff provides a forward thrust to the trolley, and the second roller 13 will continue to rotate until the connecting frame 123 abuts against the slider 1223, thereby changing the supporting component of the trolley from the second bracket 23 to the second roller 13, thereby realizing the movement of the trolley, wherein the angle between the horizontal plane where the limit block 1221 is located and the horizontal plane where the frame 2 is located is 60°, so that the connecting frame 123 is always in a tilted state, thereby ensuring the normal operation of the second roller 13 and avoiding the second roller 13 from being stored under the frame 2 again.

[0043] Furthermore, in this embodiment, a reinforcing rib 21 is fixedly connected to the bottom of the frame 2. Specifically, the frame 2 is V-shaped, and the reinforcing rib 21 is fixedly connected to both ends of the V-shaped frame 2 to improve the stability of the frame 2.

[0044] It should be noted that the guide column 121 and the second spring 124 are fixedly connected to the frame 2 via the reinforcing ribs 21. The provision of the reinforcing ribs 21 enables the guide column 121 and the second spring 124 to be located in the middle between the two ends of the V-shaped frame 2, which facilitates the control of the second roller 13.

[0045] Further, in this embodiment, first brackets 22 are provided on both sides of the first roller 11, and the two ends of the first brackets 22 are respectively fixedly connected to the top of the frame 2 and the bottom of the basket 3. Specifically, the first bracket 22 supports one side of the basket 3 so that one side of the basket 3 is in an inclined state, so that the material in the basket 3 can slide down to a preset position along the inclined side wall.

[0046] Furthermore, in this embodiment, second brackets 23 are provided on both sides of the second roller 13, and the second brackets 23 are fixedly connected to the bottom of the frame 2. Specifically, the second brackets 23 are used to support the frame 2 so that the basket 3 and the frame 2 will not tip over. When the trolley is loading, the second brackets 23 abut against the ground, and the second roller 13 is hinged by the connection frame 123 and the hinge block 122, so that the second roller 13 is stored at the bottom of the frame 2 without affecting the support of the second brackets 23. When the trolley needs to be moved, the staff lifts the trolley so that the connection frame 123 drives the second roller 13 to rotate toward the limit block 1221, and the second roller 13 replaces the second bracket 23 to support the frame 2.

[0047] Further, in this embodiment, a round handle 24 is provided at the end of the frame 2 away from the first roller 11. Specifically, the round handle 24 is used to facilitate the staff to push the frame 2.

[0048] Furthermore, the surface of the round handle 24 is covered with an anti-skid pad to increase the friction when the staff picks up the round handle 24 and avoid slipping during the process of pushing the frame 2.

[0049] The specific working process of the utility model is as follows: first, the staff lifts the frame 2 and pulls it backward, so that the connecting frame 123 drives the second roller 13 to rotate in the direction away from the limit block 1221, so that the second roller 13 is hidden under the frame 2. At this time, due to the decrease in the height of the frame 2, the second bracket 23 abuts against the ground and supports the frame 2, and starts loading materials; then, after the materials are loaded, the staff grasps the round handle 24 and lifts the frame 2. The second roller 13 rotates downward under the action of its own gravity. At the same time, the staff pushes the frame 2 forward, so that the second roller 13 continues to rotate in the direction of the limit block 1221 until the connecting frame 123 abuts against the slider 1223. At this time, the second bracket 23 is suspended, and the first roller 11 and the second roller 13 support the frame 2; finally, the staff pushes the frame 2, and the first roller 11 rolls. Under the action of the rotational connection between the guide column 121 and the hinge block 122, the second roller 13 can change the required transportation direction while rolling, thereby effectively improving the convenience of the trolley.

[0050] The above are only preferred specific implementation methods of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be covered within the protection scope of the present invention.

Claims

1. A trolley, characterized in that: It includes a roller mechanism, a frame and a basket; The roller mechanism includes a first roller, a flip member and a second roller, wherein the first roller is rotatably connected to the bottom of the frame, the flip member is disposed adjacent to the first roller and connected to the bottom of the frame, and the end of the flip member away from the frame is connected to the second roller and is used to drive the second roller to be stored under the frame or moved out from under the frame to support the frame; The vehicle basket is fixedly connected to the top of the vehicle frame.

2. A trolley according to claim 1, characterized in that: The flip member includes a guide column, an articulated block and a pair of connecting frames, one end of the guide column is fixedly connected to the bottom of the frame, the other end of the guide column is rotatably connected to the top of the articulated block, and the two ends of the two connecting frames are respectively hinged to the two ends of the second roller and the two ends of the articulated block.

3. A trolley according to claim 2, characterized in that: A side of the hinge block facing away from the first roller is fixedly connected to a limiting block, and the limiting block abuts against the two connecting frames.

4. A trolley according to claim 3, characterized in that: A first spring and a sliding block are provided on one side of the limiting block close to the two connecting frames, and two ends of the first spring are fixedly connected to the sliding block and the limiting block respectively.

5. A trolley according to claim 4, characterized in that: A second spring is provided on the side wall of the limiting block away from the first spring, and two ends of the second spring are respectively fixedly connected to the bottom of the frame and the limiting block.

6. A trolley according to claim 3, characterized in that: The angle between the horizontal plane where the limit block is located and the horizontal plane where the frame is located is 60°.

7. A trolley according to claim 1, characterized in that: The bottom of the frame is fixedly connected with a reinforcing rib.

8. A trolley according to claim 1, characterized in that: A first bracket is provided on both sides of the first roller, and two ends of the first bracket are fixedly connected to the top of the frame and the bottom of the basket respectively.

9. A trolley according to claim 1, characterized in that: Second brackets are provided on both sides of the second roller, and the second brackets are fixedly connected to the bottom of the frame.

10. A trolley according to claim 1, characterized in that: A round handle is provided at the end of the frame away from the first roller.

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