Self-resetting universal wheel

Abstract

The utility model discloses a self-resetting universal wheel, which belongs to the technical field of universal wheels, and comprises a steering structure, the bottom of the steering structure is connected with an elastic structure, the bottom of the elastic structure is connected with two brackets, an orientation structure is assembled between the two brackets and the steering structure, the orientation structure is connected with two auxiliary plates, and the two auxiliary plates are connected with the steering structure. An inclined opening is formed in the auxiliary plate, a pulley is slidably connected into the inclined opening, and the pulley is connected with an elastic structure. According to the self-resetting universal wheel, by arranging an elastic structure, a pulley and an inclined opening, after a moving wheel is assembled, an object can apply force downwards to drive an inner sleeve to move downwards, the inner sleeve can drive the pulley to move downwards, the pulley extrudes auxiliary plates to move through the inclined opening, and the two auxiliary plates can drive two blocking plates to be separated from a middle plate; at the moment, the steering resistance of the moving wheels can be reduced by increasing the space of the baffle plate and the middle plate, so that the steering portability is improved, and the operation smoothness is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of universal wheels, and specifically relates to a self - resetting universal wheel. Background Art

[0002] A self - resetting universal wheel is a wheel with special functions. After being forced to change direction, it can automatically return to the initial position state when the external force disappears. It usually relies on internal springs, mechanical structures or special damping devices to achieve the self - reset function. When turning, it is necessary to resist the elastic damping of the self - reset structure to achieve steering, which is relatively laborious during turning. Moreover, when turning and moving, the elastic damping will always provide a reset force, resulting in poor turning stability. Therefore, it is of great significance to study a new self - resetting universal wheel to solve the above problems. Content of the Utility Model

[0003] (1) Technical Problems to be Solved

[0004] In order to overcome the above - mentioned defects of the prior art, the utility model provides a self - resetting universal wheel, which solves the problems that the existing self - resetting universal wheel needs to resist the elastic damping of the self - reset structure to achieve steering during turning, is relatively laborious during turning, and the elastic damping will always provide a reset force during turning and moving, resulting in poor turning stability.

[0005] (2) Technical Solutions

[0006] To achieve the above object, the utility model provides the following technical solutions: A self - resetting universal wheel includes a steering structure. The bottom of the steering structure is connected with an elastic structure. The bottom of the elastic structure is connected with two brackets. A directional structure is assembled between the two brackets and the steering structure. Two auxiliary plates are connected to the directional structure. An inclined opening is formed in the auxiliary plate, and a pulley is slidably connected in the inclined opening. The pulley is connected with the elastic structure.

[0007] As a further solution of the utility model: Two mobile wheels are installed on the two brackets through shrink - rod screws.

[0008] As a further solution of the utility model: The steering structure includes a stamping square plate and two bearing seats. A plurality of bearing balls roll between the two bearing seats and between the bearing seats and the stamping square plate.

[0009] As a further solution of the utility model: The elastic structure includes an inner sleeve. The inner sleeve is fixedly connected to the lower bearing seat. The inner circle of the inner sleeve is fixedly connected with two pulleys.

[0010] As a further solution of the present utility model: the inner sleeve is arranged in the outer sleeve, a third spring is fixedly connected between the bottom of the inner sleeve and the bottom wall of the outer sleeve, and the bottom of the outer sleeve is fixedly connected to two brackets.

[0011] As a further solution of the present utility model: the orientation structure includes a mounting seat, the mounting seat is fixedly connected to the middle of the stamping square plate and the bearing seat, a first spring and a telescopic rod are fixedly connected to the bottom of the mounting seat, the bottom ends of the first spring and the telescopic rod are fixedly connected to a connecting plate, and a middle plate is fixedly connected to the bottom of the connecting plate.

[0012] As a further solution of the present utility model: baffles are arranged on both sides of the middle plate, an auxiliary plate is fixedly connected above the baffles, the two baffles are sleeved on a mounting pin, the mounting pin is arranged on two brackets, and a second spring is fixedly connected between the brackets and the baffles.

[0013] (III) Beneficial effects

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

[0015] 1. For this self-resetting universal wheel, by setting an elastic structure, a pulley and a bevel, after the moving wheel is assembled, the load can apply a downward force to drive the inner sleeve to move downward, the inner sleeve can drive the pulley to move downward, the pulley can squeeze the auxiliary plate to move through the bevel, and the two auxiliary plates can drive the two baffles to separate from the middle plate. At this time, by increasing the space between the baffle and the middle plate, the steering resistance of the moving wheel can be reduced, thereby improving the steering lightness and the smoothness of operation.

[0016] 2. For this self-resetting universal wheel, by setting a second spring and a baffle, the second spring can drive the baffle to reset when it resets, so that the baffle abuts against both sides of the middle plate, thereby playing a positioning role and avoiding the problem of steering of the moving wheel.

[0017] 3. For this self-resetting universal wheel, by setting a steering structure, the bearing balls can roll between the bearing seat and the stamping square plate, so that the rotation of the inner sleeve and the outer sleeve can be realized, thereby meeting the steering adjustment of the moving wheel. At the same time, the bearing balls can reduce the steering resistance and improve the operation smoothness. Description of the drawings

[0018] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0019] Figure 2 is a three-dimensional structural schematic diagram of the moving wheel of the present utility model;

[0020] Figure 3 is a three-dimensional sectional structural schematic diagram of the steering structure of the present utility model;

[0021] Figure 4 Schematic cross-sectional structure diagram of the three-dimensional elastic structure of the present utility model;

[0022] Figure 5 Schematic cross-sectional structure diagram of the connection between the elastic structure and the steering structure of the present utility model;

[0023] Figure 6 Schematic three-dimensional structure diagram of the resistance plate of the present utility model;

[0024] In the figure: 1. Steering structure; 11. Stamped square plate; 12. Bearing seat; 13. Bearing ball; 2. Bracket; 3. Movable wheel; 4. Orientation structure; 41. Connecting plate; 42. Intermediate plate; 43. Telescopic rod; 44. First spring; 45. Mounting pin; 46. Second spring; 47. Resistance plate; 48. Mounting seat; 5. Elastic structure; 51. Outer sleeve; 52. Inner sleeve; 53. Third spring; 6. Pulley; 7. Bevel; 8. Auxiliary plate. Specific implementation manners

[0025] The technical solutions of this patent will be further described in detail below in conjunction with specific implementation manners.

[0026] As Figure 1-6As shown in the figure, the present utility model provides a technical solution: a self-resetting universal wheel, including a steering structure 1. The steering structure 1 includes a stamping square plate 11 and two bearing seats 12. A plurality of bearing balls 13 are rolled between the two bearing seats 12 and between the bearing seats 12 and the stamping square plate 11. The bearing balls 13 can roll between the bearing seats 12 and the stamping square plate 11, so as to realize the rotation of the inner sleeve 52 and the outer sleeve 51, thereby meeting the steering adjustment of the moving wheel 3. At the same time, the bearing balls 13 can reduce the steering resistance and improve the operation smoothness. The bottom of the steering structure 1 is connected with an elastic structure 5. The elastic structure 5 includes an inner sleeve 52. The inner sleeve 52 is fixedly connected to the lower bearing seat 12. The inner ring of the inner sleeve 52 is fixedly connected with two pulleys 6. The inner sleeve 52 is arranged in the outer sleeve 51. A third spring 53 is fixedly connected between the bottom of the inner sleeve 52 and the bottom wall of the outer sleeve 51. The third spring 53 can connect the inner sleeve 52 and the outer sleeve 51 to prevent the outer sleeve 51 from separating from the inner sleeve 52. And the third spring 53 has elasticity, so that the inner sleeve 52 can move up and down smoothly. The bottom of the outer sleeve 51 is fixedly connected with two brackets 2. The bottom of the elastic structure 5 is connected with two brackets 2. The brackets 2 can install the moving wheel 3 through shrink rod screws, which is convenient for the assembly operation of the moving wheel 3. The two brackets 2 install the moving wheel 3 through shrink rod screws. A positioning structure 4 is assembled between the two brackets 2 and the steering structure 1. The positioning structure 4 includes a mounting seat 48. The mounting seat 48 is fixedly connected to the middle of the stamping square plate 11 and the bearing seat 12. A first spring 44 and a telescopic rod 43 are fixedly connected to the bottom of the mounting seat 48. The first spring 44 and the telescopic rod 43 can keep the connecting plate 41 stable, and the first spring 44 and the telescopic rod 43 can be telescopic, so that the inner sleeve 52 can move up and down smoothly. The bottom ends of the first spring 44 and the telescopic rod 43 are fixedly connected with a connecting plate 41. The bottom of the connecting plate 41 is fixedly connected with an intermediate plate 42. Both ends of the intermediate plate 42 are arc-shaped, so that the second spring 46 can be reset to drive the blocking plate 47 to be located on both sides of the intermediate plate 42 smoothly. Blocking plates 47 are arranged on both sides of the intermediate plate 42. The upper part of the blocking plate 47 is fixedly connected with an auxiliary plate 8. The two blocking plates 47 are sleeved on a mounting pin 45. The mounting pin 45 is arranged on the two brackets 2. A second spring 46 is fixedly connected between the bracket 2 and the blocking plate 47. The second spring 46 can drive the blocking plate 47 to reset when it is reset, so that the blocking plate 47 abuts against both sides of the intermediate plate 42, thereby playing a positioning role and avoiding the problem of steering of the moving wheel 3. Two auxiliary plates 8 are connected to the positioning structure 4. An inclined opening 7 is opened on the auxiliary plate 8. A pulley 6 is slidably connected in the inclined opening 7. The inclined opening 7 is obliquely opened, so that the pulley 6 can slide on the inclined opening 7 to squeeze the auxiliary plate 8 to move horizontally, thereby controlling the blocking plate 47 to move away from the intermediate plate 42, which is convenient for the steering of the moving wheel 3. At the same time, the pulley 6 can roll to reduce the wear between the pulley 6 and the inclined opening 7. The pulley 6 is connected with the elastic structure 5.

[0027] The working principle of the present utility model is as follows: After the moving wheel 3 is assembled on the load-carrying object, the load-carrying object can apply a downward force, causing the inner sleeve 52 to move downward. The inner sleeve 52 drives the pulley 6 to move, causing the pulley 6 to squeeze the auxiliary plate 8 to move through the inclined opening 7. The two auxiliary plates 8 can drive the two blocking plates 47 to separate, increasing the distance between the blocking plate 47 and the intermediate plate 42, thereby making it easier for the moving wheel 3 to turn. And when the load-carrying object is lifted, the moving wheel 3 is separated from the ground. At this time, the second spring 46 can drive the blocking plate 47 to reset, causing the blocking plate 47 to fit on the intermediate plate 42, thereby achieving the operation of self-resetting and positioning the moving wheel 3.

[0028] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific circumstances.

[0029] The above has made a detailed description of the preferred embodiments of this patent. However, this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the purpose of this patent.

Claims

1. A self-resetting universal wheel, comprising a steering structure (1), characterized in that: The bottom of the steering structure (1) is connected to an elastic structure (5), the bottom of the elastic structure (5) is connected to two brackets (2), an orientation structure (4) is arranged between the two brackets (2) and the steering structure (1), two auxiliary plates (8) are connected to the orientation structure (4), an oblique opening (7) is provided on the auxiliary plate (8), a pulley (6) is slidably connected in the oblique opening (7), and the pulley (6) is connected to the elastic structure (5).

2. A self-resetting universal wheel according to claim 1, characterized in that: The two brackets (2) are mounted with moving wheels (3) via retractable screws.

3. The self-resetting universal wheel according to claim 1, characterized in that: The steering structure (1) comprises a stamped square plate (11) and two bearing seats (12), and a plurality of bearing balls (13) roll between the two bearing seats (12) and between the stamped square plate (11).

4. The self-resetting universal wheel according to claim 3, characterized in that: The elastic structure (5) comprises an inner sleeve (52), the inner sleeve (52) is fixedly connected to the bearing seat (12) below, and the inner ring of the inner sleeve (52) is fixedly connected to two pulleys (6).

5. The self-resetting universal wheel according to claim 4, characterized in that: The inner sleeve (52) is arranged in the outer sleeve (51), a third spring (53) is fixedly connected between the bottom of the inner sleeve (52) and the bottom wall of the outer sleeve (51), and the bottom of the outer sleeve (51) is fixedly connected to the two brackets (2).

6. The self-resetting universal wheel according to claim 3, characterized in that: The directional structure (4) comprises a mounting seat (48), wherein the mounting seat (48) is fixedly connected to the middle of the stamping square plate (11) and the bearing seat (12), the bottom of the mounting seat (48) is fixedly connected to a first spring (44) and a telescopic rod (43), the bottom ends of the first spring (44) and the telescopic rod (43) are fixedly connected to a connecting plate (41), and the bottom of the connecting plate (41) is fixedly connected to an intermediate plate (42).

7. The self-resetting universal wheel according to claim 6, characterized in that: Blocking plates (47) are provided on both sides of the intermediate plate (42), and the upper part of the blocking plates (47) is fixedly connected to the auxiliary plate (8). The two blocking plates (47) are sleeved on the mounting pins (45), and the mounting pins (45) are provided on the two brackets (2). A second spring (46) is fixedly connected between the bracket (2) and the blocking plates (47).

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