Cart convenient for going up and down steps
By setting auxiliary wheels on the cart as fulcrums, the lever principle is used to easily move up and down stairs, solving the problems of laborious and wear-prone traditional carts and realizing convenient and safe stairs transportation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 彭程
- Filing Date
- 2025-05-20
- Publication Date
- 2026-04-21
AI Technical Summary
Traditional strollers are difficult to maneuver up and down stairs and are easily damaged. The wheels wear out quickly when turning, which shortens their lifespan and poses safety risks.
A trolley with auxiliary wheels was designed. The auxiliary wheels are fixed to the frame with bolts. The auxiliary wheels and the main wheels are arranged in a triangle. The auxiliary wheels first contact the step as a fulcrum and use the lever principle to easily go up and down the step. The main wheels gradually follow to the same height.
It improves the convenience and safety of going up and down stairs, reduces labor intensity and wheel wear, extends service life, and reduces the risk of goods falling.
Smart Images
Figure CN224145996U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of material handling equipment technology, and more specifically, to an improvement of a trolley for moving up and down stairs. Background Technology
[0002] Traditional similar products are three wheels on one side. When encountering steps, they rely on the entire wheel body to flip to climb the steps. In this process, the pressure of hitting the ground is often too great. The frame that fixes the three wheels will often deform and become less durable over time. Going up and down steps is also very strenuous. In addition, when turning, since only two wheels on one side are on the ground, the wheel sets on both sides will have hard friction with the ground when turning, which not only makes it strenuous but also accelerates the lifespan of the wheels. Utility Model Content
[0003] (a) Technical problems to be solved
[0004] In view of the shortcomings of the existing technology, this utility model provides a trolley that is easy to move up and down stairs. It has the advantages of safely moving goods up and down stairs, improving handling efficiency, reducing labor intensity and safety risks, and solving the problem that when going up and down stairs, it is necessary to manually lift the trolley, which is not only laborious but also easy to cause goods to fall and cause losses.
[0005] (II) Technical Solution
[0006] To achieve the aforementioned advantages of safely transporting goods up and down steps, improving handling efficiency, and reducing labor intensity and safety risks, the specific technical solution adopted by this utility model is as follows: It includes a frame, main wheels, auxiliary wheels, auxiliary wheel fixing plates, a pallet, and a liner. The main wheels and the liner are installed on both sides of the bottom of the frame. The auxiliary wheel fixing plates are fixed to the frame and have fixing holes. The auxiliary wheels are provided with fixing blocks and mounting brackets. The fixing blocks are fastened to the fixing holes by bolts. The mounting brackets are fixedly connected to the end face of the fixing blocks. The pallet is located at the other end of the frame, away from the main wheels.
[0007] Furthermore, the top of the frame is provided with a handle and an adapter handle, one end of which is connected to the handle and the other end is fixedly connected to the frame.
[0008] Furthermore, the adapter handle is located perpendicular to the front of the handle.
[0009] Furthermore, both the main wheel and the auxiliary wheel have anti-slip textures on their surfaces, and the auxiliary wheel and the main wheel are arranged in a triangular configuration.
[0010] Furthermore, the fixing holes are arranged in an array, and the array of fixing holes are distributed vertically on the auxiliary wheel fixing plate, and the fixing holes are adapted to the mounting holes of the fixing block.
[0011] Furthermore, the surface of the pallet is provided with a U-shaped seat, and there are two sets of U-shaped seats, which are respectively folded and connected to the bottom of the frame.
[0012] Furthermore, the liner is provided in two sets, with the two sets of liner corresponding to both sides of the frame.
[0013] (III) Beneficial Effects
[0014] Compared with the prior art, this utility model provides a trolley that facilitates going up and down stairs, and has the following beneficial effects:
[0015] By setting an auxiliary wheel in the middle of the two main wheels, and mounting the auxiliary wheel on a fixed plate, when encountering a step while going upstairs, the auxiliary wheel first contacts the step one step higher. At this point, the goods can be easily lifted using the lever principle with the auxiliary wheel as a fulcrum. Then, pulling the auxiliary wheel will pull the main wheels to the same height step. Repeating this action will allow you to go upstairs. When going downstairs, the main wheels go down first. As the main wheels roll to the next step, the auxiliary wheel can rest on the previous step to achieve a convergence effect and reduce impact. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the structure of the auxiliary wheel fixing plate 4 of this utility model;
[0019] Figure 3 This is a schematic diagram of the structure of the auxiliary wheel 3 of this utility model;
[0020] Figure 4 This is a schematic diagram of the structure of the pallet 5 of this utility model.
[0021] In the diagram: Frame 1, Handle 11, Adapter Handle 12, Main Wheel 2, Auxiliary Wheel 3, Auxiliary Wheel Fixing Plate 4, Support Plate 5, Liner Plate 6, Fixing Block 31, Mounting Bracket 32, Fixing Hole 41, U-Shaped Seat 51. Detailed Implementation
[0022] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.
[0023] According to an embodiment of the present invention, a trolley that facilitates going up and down stairs is provided.
[0024] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figure 1-4 As shown, a trolley for facilitating climbing stairs according to an embodiment of this utility model includes a frame 1, main wheels 2, auxiliary wheels 3, auxiliary wheel fixing plates 4, a support plate 5, and a liner 6. The main wheels 2 and the liner 6 are installed on both sides of the bottom of the frame 1. The auxiliary wheel fixing plates 4 are fixed to the frame 1. The auxiliary wheel fixing plates 4 are provided with fixing holes 41. The auxiliary wheels 3 are provided with fixing blocks 31 and mounting brackets 32. The fixing blocks 31 are fastened to the fixing holes 41 by bolts. The mounting brackets 32 are fixedly connected to the end face of the fixing blocks 31. The support plate 5 is located at the other end of the frame 1, away from the main wheels 2. The height of the trolley can be adjusted according to the user's height and the height of a single step. When the user is relatively short or the single step is relatively high, two or more auxiliary wheels 3 need to be set to accommodate relatively high steps. When multiple auxiliary wheels 3 are set, the diameter of the wheels is relatively small.
[0025] In one embodiment, the top of the frame 1 is provided with a handle 11 and an adapter handle 12, one end of the adapter handle 12 is connected to the handle 11, and the other end is fixedly connected to the frame 1.
[0026] In one embodiment, the adapter handle 12 is located perpendicular to the handle 11 at the front of the handle 11. The handle 11 is suitable for people with relatively tall stature, while the adapter handle 12 can be used when the user is relatively short to achieve the same effect.
[0027] In one embodiment, both the main wheel 2 and the auxiliary wheel 3 have anti-slip textures on their surfaces, and the auxiliary wheel 3 and the main wheel 2 are arranged in a triangle. The number of auxiliary wheels 3 can be increased as needed.
[0028] In one embodiment, the fixing holes 41 are provided in an array, and the array of fixing holes 41 are distributed vertically on the auxiliary wheel fixing plate 4, and the fixing holes 41 are adapted to the mounting holes of the fixing block 31.
[0029] In one embodiment, the surface of the pallet 5 is provided with a U-shaped seat 51, and two sets of U-shaped seats 51 are provided, with the two sets of U-shaped seats 51 respectively folded and connected to the bottom of the frame 1.
[0030] In one embodiment, the liner 6 is provided in two sets, with the two sets of liner 6 respectively corresponding to both sides of the frame 1.
[0031] Working Principle: When the trolley is traveling on flat ground, the auxiliary wheel 3 does not contact the ground, and the trolley moves using the main wheel 2. The pallet 5 can be unfolded or folded as needed. When moving up or down stairs, first connect the fixing hole 41 of the auxiliary wheel 3 to the fixing block 31, so that the auxiliary wheel 3 extends and contacts the stairs. Then, the person handling the trolley holds the handle 11 of the frame 1 and pushes the trolley. The auxiliary wheel 3 contacts the stairs first. When going upstairs, the auxiliary wheel contacts the next higher step first. At this time, the goods can be easily lifted using the lever principle with the auxiliary wheel 3 as a fulcrum. Then, pull the auxiliary wheel 3 to pull the main wheel 2 to the same height as the stairs. Repeat this action to go upstairs. The main wheel gradually climbs the stairs, and the auxiliary wheel always maintains contact with the stairs, helping to distribute the weight of the trolley and making the handling process easier and more stable. When going down stairs, the operation is similar. The auxiliary wheel 3 contacts the next step first, guiding the trolley to descend smoothly.
[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A stroller that facilitates stair climbing, characterized by: It includes a frame (1), a main wheel (2), an auxiliary wheel (3), an auxiliary wheel fixing plate (4), a support plate (5), and a liner (6). The main wheel (2) and the liner (6) are installed on both sides of the bottom of the frame (1). The auxiliary wheel fixing plate (4) is fixed on the frame (1). The auxiliary wheel fixing plate (4) is provided with fixing holes (41). The auxiliary wheel (3) is provided with a fixing block (31) and a mounting bracket (32). The fixing block (31) is fastened to the fixing hole (41) by bolts. The mounting bracket (32) is fixedly connected to the end face of the fixing block (31). The support plate (5) is located at the other end of the frame (1) away from the main wheel (2).
2. The step trolley of claim 1, wherein: The top of the frame (1) is provided with a handle (11) and an adapter handle (12). One end of the adapter handle (12) is connected to the handle (11), and the other end is fixedly connected to the frame (1).
3. The step dolly of claim 2, wherein: The adapter handle (12) is perpendicular to the handle (11) and located at the front of the handle (11).
4. The step dolly of claim 1, wherein: The surfaces of the main wheel (2) and the auxiliary wheel (3) are provided with anti-slip textures, and the auxiliary wheel (3) and the main wheel (2) are arranged in a triangle.
5. The step dolly of claim 1, wherein: The fixing holes (41) are provided in an array, and the array of fixing holes (41) are distributed vertically on the auxiliary wheel fixing plate (4). The fixing holes (41) are adapted to the mounting holes of the fixing block (31).
6. The step dolly of claim 1, wherein: The surface of the pallet (5) is provided with a U-shaped seat (51), and there are two sets of the U-shaped seats (51). The two sets of U-shaped seats (51) are respectively folded and connected to the bottom of the frame (1).
7. The step dolly of claim 1, wherein: The liner (6) is provided in two sets, with the two sets of liner (6) respectively corresponding to the two sides of the frame (1).