Liftable universal double-wheel

Abstract

The utility model relates to the technical field of universal wheels, in particular to a liftable universal double-wheel which comprises a support and a lifting pressing plate, one side of the upper end of the support is rotatably connected with the lifting pressing plate through a connecting shaft, kidney-shaped grooves are formed in the two sides of the lower end of the support, a mounting shaft is arranged between the kidney-shaped grooves in the two sides, and the mounting shaft is connected with the lifting pressing plate through a connecting shaft. A set of wheel bodies are installed in the middle of the installation shaft, connecting pieces are arranged at the two ends of the installation shaft, one ends of the connecting pieces are rotationally connected with the lower end of the rising and falling pressing plate, the other ends of the connecting pieces are arranged on the outer side of the installation shaft in a sleeving mode, and elastic connecting pieces are arranged between the connecting pieces and the rising and falling pressing plate. The wheel body can be driven to ascend and descend through linkage of the ascending and descending pressing plate and the connecting piece, braking is achieved through abutting and supporting of the adjustable supporting assembly and the ground when the wheel body ascends, the wheel body makes contact with the ground and continues to slide when the wheel body descends, and compared with an existing universal wheel, the braking effect can be continuously kept, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of omnidirectional wheel technology, specifically to a liftable omnidirectional double wheel. Background Technology

[0002] As a common mechanical component, casters are widely used in various equipment, furniture, and tools to enable easy movement and steering. Existing casters are usually fixed in place. If they need to stop during use, friction blocks on them need to contact the wheel body to increase the friction force, thereby stopping the wheel.

[0003] This braking method is prone to wear and tear on the friction blocks with prolonged use, resulting in poor braking performance and inability to complete braking operations in a timely manner. The lifespan of the casters is also relatively short.

[0004] Therefore, a type of height-adjustable omnidirectional double wheel is needed to improve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a height-adjustable universal double wheel to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A liftable omnidirectional double-wheel design includes a bracket and a lifting plate. The upper end of the bracket is rotatably connected to the lifting plate via a connecting shaft. The lower end of the bracket has waist-shaped grooves on both sides, with a mounting shaft positioned between these grooves. A set of wheels is mounted in the middle of the mounting shaft. Connecting pieces are located at both ends of the mounting shaft. One end of each connecting piece is rotatably connected to the lower end of the lifting plate, and the other end of each connecting piece is sleeved on the outside of the mounting shaft. An elastic connector is provided between the connecting piece and the lifting plate. A mounting hole is located at the end of the bracket furthest from the lifting plate. A bearing seat is fixedly connected to the upper end of the mounting hole, and an adjustable support assembly is fitted inside the mounting hole. A tightening nut is threaded onto the outer side of the adjustable support assembly, and the tightening nut abuts against the lower end of the mounting hole.

[0008] As a preferred embodiment of this utility model, a fixing pin b is fixedly connected to the middle of the connecting piece, and a fixing pin a is fixedly connected to the side of the lifting and lowering plate. Both the fixing pin b and the fixing pin a have hook holes at their ends.

[0009] As a preferred embodiment of this utility model, the elastic connector is a spring, and hooks are provided at both ends of the spring. The hooks at both ends are respectively engaged with the hook holes at the ends of the fixing pin b and the fixing pin a.

[0010] As a preferred embodiment of this utility model, limit pins are fixedly connected to both sides of the bracket to limit the displacement of the connecting piece.

[0011] As a preferred embodiment of this utility model, the adjustable support assembly includes a main rivet that is inserted into the bearing seat. The upper end of the main rivet is fixedly connected to an upper plate. The lower end of the upper plate has a threaded hole. An adjustable lifting rod is threadedly connected inside the threaded hole, and the lower end of the adjustable lifting rod is provided with a rotatable foot.

[0012] As a preferred embodiment of this utility model, the lower end of the rotatable foot is provided with a silent and anti-static foot pad.

[0013] As a preferred embodiment of this utility model, a bearing is provided between the bearing housing and the upper plate and the main rivet.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] In this invention, the wheel body can be raised and lowered by the linkage of the lifting and lowering plate and the connecting piece. When the wheel body is raised, it is supported by the adjustable support component to achieve braking. When the wheel body is lowered, it continues to slide after contacting the ground. Compared with existing universal wheels, it can maintain the braking effect continuously and extend its service life. Attached Figure Description

[0016] Figure 1 This is a first-view perspective perspective view of the present invention;

[0017] Figure 2 This is a second-view perspective perspective view of the present invention;

[0018] Figure 3 This is a schematic diagram of the wheel mounting structure in this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the adjusting support component in this utility model;

[0020] Figure 5 This is a cross-sectional schematic diagram of the present invention.

[0021] In the diagram: 1. Bracket; 2. Upper plate; 3. Lifting and lowering plate; 4. Connecting piece; 5. Mounting shaft; 6. Spring; 7. Fixing pin a; 8. Wheel; 9. Bearing seat; 10. Rotatable foot; 11. Waist-shaped groove; 12. Adjustable lifting rod; 13. Main rivet; 14. Tightening nut; 15. Bearing; 16. Connecting shaft; 17. Limiting pin; 18. Fixing pin b. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0023] To facilitate understanding of this utility model, a more comprehensive description of it will be provided below with reference to relevant embodiments. Several embodiments of this utility model are given. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0024] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0026] Please see Figure 1-5 This utility model provides a technical solution:

[0027] For an example, please refer to... Figure 1 , 23, 4, and 5, a type of liftable universal double wheel, including a bracket 1 and a lifting plate 3. The upper end of the bracket 1 is rotatably connected to the lifting plate 3 via a connecting shaft 16. The lower end of the bracket 1 has waist-shaped grooves 11 on both sides, and a mounting shaft 5 is provided between the waist-shaped grooves 11 on both sides. A set of wheels 8 is installed in the middle of the mounting shaft 5. Connecting pieces 4 are provided at both ends of the mounting shaft 5. One end of the connecting piece 4 is rotatably connected to the lower end of the lifting plate 3, and the other end of the connecting piece 4 is sleeved on the outside of the mounting shaft 5. An elastic connecting element is provided between the connecting piece 4 and the lifting plate 3. A mounting hole is provided at the end of the bracket 1 away from the lifting plate 3. A bearing seat 9 is fixedly connected to the upper end of the mounting hole, and an adjustable support component is fitted inside the mounting hole. A tightening nut 14 is threadedly connected to the outside of the adjustable support component, and the tightening nut 14 abuts against the lower end of the mounting hole.

[0028] The lifting and lowering plate 3 is rotatably connected to the bracket 1 and connected to the mounting shaft 5 through the connecting piece 4. During the process of pressing down the lifting and lowering plate 3, the upper end of the connecting piece 4 moves forward, causing the mounting shaft 5 to move down inside the waist groove 11, thereby causing the wheel body 8 to move down and contact the ground.

[0029] Conversely, when the lifting plate 3 is raised, the upper end of the connecting piece 4 moves backward, causing the mounting shaft 5 to move upward inside the waist-shaped groove 11, thereby causing the wheel 8 to move upward and be fixed by contacting the ground through the adjustable support component. The setting of the elastic connecting piece makes the adjustment faster.

[0030] Please refer to Figure 1 , 2 3, 4 and 5, the middle part of the connecting piece 4 is fixedly connected with a fixing pin b18, the side of the lifting and lowering plate 3 is fixedly connected with a fixing pin a7, the ends of the fixing pin b18 and the fixing pin a7 are provided with hook holes, the elastic connecting part is a spring 6, the two ends of the spring 6 are provided with hooks, the two ends of the hooks are respectively engaged with the hook holes at the ends of the fixing pin b18 and the fixing pin a7, and the two sides of the bracket 1 are fixedly connected with limit pins 17 for limiting the displacement of the connecting piece 4.

[0031] Please refer to Figure 1 , 2 3, 4, and 5, the adjustable support assembly includes a main rivet 13 that is inserted into the bearing seat 9. The upper end of the main rivet 13 is fixedly connected to an upper plate 2. The lower end of the upper plate 2 has a threaded hole. An adjustable lifting rod 12 is threaded into the threaded hole. The lower end of the adjustable lifting rod 12 is provided with a rotatable foot 10. The lower end of the rotatable foot 10 is provided with a silent anti-static foot pad. A bearing 15 is provided between the bearing seat 9, the upper plate 2, and the main rivet 13.

[0032] The adjustable lifting rod 12 can be adjusted relative to the main rivet 13 to adapt to different usage scenarios, and the silent anti-static foot pads are in contact with the ground when supporting.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A liftable omnidirectional double-wheel design, comprising a bracket (1) and a lifting / lowering plate (3), wherein the upper end of the bracket (1) is rotatably connected to the lifting / lowering plate (3) via a connecting shaft (16), and both sides of the lower end of the bracket (1) are provided with waist-shaped grooves (11), and an mounting shaft (5) is provided between the two waist-shaped grooves (11), wherein a set of wheels (8) is mounted in the middle of the mounting shaft (5), characterized in that: The mounting shaft (5) is provided with connecting pieces (4) at both ends. One end of the connecting piece (4) is rotatably connected to the lower end of the lifting and lowering plate (3). The other end of the connecting piece (4) is sleeved on the outside of the mounting shaft (5). An elastic connecting member is provided between the connecting piece (4) and the lifting and lowering plate (3). The bracket (1) has an installation hole at one end away from the lifting and lowering plate (3). A bearing seat (9) is fixedly connected to the upper end of the installation hole, and an adjustable support component is provided in the installation hole. A tightening nut (14) is threadedly connected to the outside of the adjustable support component, and the tightening nut (14) abuts against the lower end of the installation hole.

2. The adjustable omnidirectional double wheels according to claim 1, characterized in that: The middle part of the connecting piece (4) is fixedly connected to a fixing pin b (18), and the side of the lifting and lowering plate (3) is fixedly connected to a fixing pin a (7). The ends of the fixing pin b (18) and the fixing pin a (7) are both provided with hook holes.

3. The adjustable omnidirectional double wheels according to claim 2, characterized in that: The elastic connector is a spring (6), and the two ends of the spring (6) are provided with hooks. The hooks at both ends are respectively engaged with the hook holes at the ends of the fixing pin b (18) and the fixing pin a (7).

4. The adjustable omnidirectional double wheels according to claim 3, characterized in that: Limiting pins (17) are fixedly connected to both sides of the bracket (1) to limit the displacement of the connecting piece (4).

5. The adjustable omnidirectional double wheels according to any one of claims 1-4, characterized in that: The adjustable support assembly includes a main rivet (13) that is inserted into the bearing seat (9). The upper end of the main rivet (13) is fixedly connected to an upper plate (2). The lower end of the upper plate (2) is provided with a threaded hole. An adjustable lifting rod (12) is threadedly connected inside the threaded hole. The lower end of the adjustable lifting rod (12) is provided with a rotatable foot (10).

6. The adjustable omnidirectional double wheels according to claim 5, characterized in that: The lower end of the rotatable foot (10) is provided with a silent anti-static foot pad.

7. The adjustable omnidirectional double wheels according to claim 6, characterized in that: A bearing (15) is provided between the bearing housing (9), the upper plate (2), and the main rivet (13).

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