Obstacle crossing universal wheel assembly
By designing two sets of universal wheel sets that can be lifted independently, the rollers are lifted and lowered by connecting rod structure and springs, the problem that the existing universal wheel cannot cross obstacles smoothly, and the obstacle crossing ability and scope of application of universal wheels are improved.
Patent Information
- Application Number
- CN202411973468.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-03-25
AI Technical Summary
The existing universal wheel may not be able to climb over smoothly when crossing a hurdle or an obstacle, and it needs to be lifted manually, which is inconvenient to use. The height of the existing hurdle wheel is fixed, and the ability to cross hurdle and obstacle is poor.
A barrier-blocking universal wheel assembly is designed, including a chassis and a chassis. The chassis is rotatably installed on the chassis by bearings. There are two independent universal wheel groups in the chassis. Each set of rollers can be lifted and lowered independently. The rollers are lifted and lowered through the connecting rod structure and spring to adapt to obstacles of different heights.
It improves the ability of the universal wheel to climb over obstacles and has a wide range of applications, ensuring the bearing capacity and smooth operation of the universal wheel in normal road sections, and can effectively cross when encountering obstacles.
Smart Images
Figure CN119682436A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of universal wheels, and in particular to an obstacle-crossing universal wheel assembly. Background Art
[0002] The universal wheel commonly seen on the market consists of a wheel and a universal seat, and the wheel can rotate 360 degrees horizontally through the universal seat. However, this universal wheel does not have the function of crossing obstacles, so when crossing bumps or pits, some wheels in the wheel system may have a small contact area with the ground and cannot smoothly cross. The universal wheel needs to be lifted manually, which is inconvenient to use and has low practicality.
[0003] At present, some universal wheels are equipped with obstacle crossing wheels, which are slightly higher than the main wheels of the universal wheel. The obstacle crossing wheels do not contact the ground during normal walking and can only overcome obstacles after encountering them. The frequency of use is low, and the height of the obstacle crossing wheels remains unchanged. The size of obstacles that can be overcome is also limited, and the ability to overcome obstacles is poor. Summary of the invention
[0004] In order to solve the above problems, the present invention provides an obstacle-crossing universal wheel assembly, which can improve the ability of the universal wheel to cross obstacles and has a wide range of applications.
[0005] To this end, the technical solution of the present invention is: an obstacle-crossing universal wheel assembly, comprising a chassis and a base frame, the upper part of the base frame is rotatably mounted on the chassis through a bearing; two sets of universal wheel groups are arranged in the base frame, the universal wheel groups include a mounting cylinder, a roller mounting frame and a roller, the upper end of the roller mounting frame is a connecting rod structure, and extends into the mounting cylinder, and the mounting cylinder is provided with a spring; the roller is rotatably mounted on the lower end of the roller mounting frame, and a linkage part is provided on the side of the roller mounting frame; the two sets of universal wheel groups are arranged in parallel, and the linkage parts of the two roller mounting frames are rotatably connected with a rocker arm.
[0006] On the basis of the above scheme and as a preferred scheme of the above scheme: a mounting plate is provided in the base frame, and two parallel mounting tubes are installed on the mounting plate.
[0007] On the basis of the above scheme and as a preferred scheme of the above scheme: one end of the spring abuts against the connecting rod structure of the roller mounting frame, and the other end abuts against the top of the mounting cylinder, giving the roller mounting frame a downward force.
[0008] On the basis of the above scheme and as a preferred scheme of the above scheme: the rollers are rotatably mounted on two roller mounting frames independently, and the two rollers can be lifted and lowered independently.
[0009] On the basis of the above scheme and as a preferred scheme of the above scheme: the two rollers are of the same size, a wear-resistant sleeve is provided on the outer side of the roller, and an anti-slip groove is provided on the wear-resistant sleeve.
[0010] Compared with the prior art, the invention has the following beneficial effects: two independent universal wheel groups are provided, each group of rollers can be raised and lowered independently, and both groups of rollers can normally contact the ground on normal roads, and the bearing capacity of the universal wheel is increased, and the operation is more stable; when encountering an obstacle, no matter which side of the roller contacts the obstacle, it can move upward, compress the spring, and play the role of an obstacle-crossing wheel, while the other roller still contacts the ground. The roller can be raised and lowered within the action range of the spring, ensuring that it can cross obstacles of respective heights, and has a wide range of adaptability. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a structural schematic diagram of the present invention;
[0012] Figure 2 It is a structural cross-sectional view of the present invention;
[0013] Figure 3 , Figure 4 It is a schematic diagram of two rollers of the present invention successively overcoming obstacles.
[0014] The markings in the figure are: chassis 1, base frame 2, mounting plate 3, universal wheel set 4, mounting tube 41, roller mounting frame 42, roller 43, connecting rod structure 44, spring 45, and rocker arm 5. DETAILED DESCRIPTION
[0015] In the description of the present invention, it should be noted that directional words, such as the terms "center", "lateral (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present invention.
[0016] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the definition of "first" and "second" features can explicitly or implicitly include one or more of the features. In the description of the present invention, "several" and "a number" mean two or more, unless otherwise clearly and specifically defined.
[0017] See the attached drawings. The obstacle-crossing universal wheel assembly of this embodiment comprises a chassis 1 and a base frame 2. The upper part of the base frame 2 is rotatably mounted on the chassis 1 through a bearing. A mounting plate 3 is provided inside the base frame 2, and two sets of universal wheel assemblies 4 are mounted on the mounting plate 3.
[0018] The universal wheel set 4 includes a mounting tube 41, a roller mounting frame 42 and a roller 43, and the two mounting tubes 41 are mounted side by side on the mounting plate 3. The upper end of the roller mounting frame 42 is a connecting rod structure 44, which extends into the mounting tube 41, and the mounting tube is provided with a spring 45; one end of the spring 45 abuts on the connecting rod structure 44 of the roller mounting frame 42, and the other end abuts on the top of the mounting tube 41, giving the roller mounting frame 42 a downward force.
[0019] The roller 43 is rotatably mounted on the lower end of the roller mounting frame 42, and a linkage part is provided on the side of the roller mounting frame 42; two sets of universal wheel groups are arranged in parallel, and the linkage parts of the two roller mounting frames are rotatably connected with a swing rod 5. The roller 43 is rotatably mounted on the two roller mounting frames 42 separately, and the two rollers 43 can be raised and lowered independently. The two rollers are of the same size, and a wear-resistant sleeve is provided on the outer side of the roller 43, and an anti-slip groove is provided on the wear-resistant sleeve.
[0020] This embodiment is provided with two independent universal wheel groups, each group of rollers can be raised and lowered independently. On normal roads, both groups of rollers can normally contact the ground, and the bearing capacity of the universal wheel is increased, and the operation is more stable. When encountering an obstacle, no matter which side of the roller contacts the obstacle, it can move upward, compress the spring, and play the role of an obstacle-crossing wheel, while the other roller is still in contact with the ground. The roller can be raised and lowered within the action range of the spring, ensuring that it can cross obstacles of respective heights, and has a wide range of adaptability.
[0021] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.
Claims
1. An obstacle-crossing universal wheel assembly, comprising a chassis and a base frame, wherein the upper portion of the base frame is rotatably mounted on the chassis through a bearing; characterized in that: Two sets of universal wheel groups are arranged in the base frame, and the universal wheel groups include a mounting tube, a roller mounting frame and a roller. The upper end of the roller mounting frame is a connecting rod structure and extends into the mounting tube, and the mounting tube is provided with a spring; the roller is rotatably mounted on the lower end of the roller mounting frame, and a linkage part is provided on the side of the roller mounting frame; the two sets of universal wheel groups are arranged in parallel, and the linkage parts of the two roller mounting frames are rotatably connected with a rocker arm.
2. The obstacle-crossing universal wheel assembly according to claim 1, characterized in that: A mounting plate is arranged inside the base frame, and two parallel mounting tubes are mounted on the mounting plate.
3. The obstacle-crossing universal wheel assembly according to claim 1, characterized in that: One end of the spring abuts against the connecting rod structure of the roller mounting frame, and the other end abuts against the top of the mounting cylinder, giving the roller mounting frame a downward force.
4. The obstacle-crossing universal wheel assembly according to claim 1, characterized in that: The rollers are rotatably mounted on two roller mounting frames independently, and the two rollers can be lifted and lowered independently.
5. The obstacle-crossing universal wheel assembly according to claim 1, characterized in that: The two rollers are of the same size, and wear-resistant sleeves are arranged on the outer sides of the rollers, and anti-skid grooves are arranged on the wear-resistant sleeves.