Limiting rotating device and rotating structure

Abstract

The utility model belongs to the technical field of rotating mechanisms, and particularly relates to a limiting rotating device and a rotating structure. Comprising a first rotating disc and a second rotating disc which are in threaded connection, a rotating space is formed between the first rotating disc and the second rotating disc, a first limiting part is arranged on the first rotating disc, a second limiting part is arranged on the second rotating disc, and the first limiting part and the second limiting part are both arranged in the rotating space. The first limiting part is arranged between the two second limiting parts, or the second limiting part is arranged between the two first limiting parts. The motion trails of the first limiting part and the second limiting part coincide to achieve the limiting effect, damping is formed by friction force generated by threaded connection of the first rotating disc and the second rotating disc, the relative position is static without external force, no damping structure needs to be additionally arranged, and the structure is simple.

Description

Technical Field

[0001] The utility model belongs to the technical field of rotating mechanisms, and particularly relates to a limit rotating device and a rotating structure. Background Art

[0002] Limit rotating devices are required in many occasions. For example, medical suspension towers and rotating platforms often used in hospitals are essential medical equipment in modern operating rooms of hospitals. Usually, the cantilever and the functional column of a medical suspension tower, and the column and the platform of a rotating platform can rotate relative to each other. It is necessary to separately set a damping structure and a limit structure to limit the rotation angle of the two to meet the requirement of stable use. However, the existing superposed limit rotating device of the damping structure and the limit structure has a complex structure, and due to the mutual restriction between the two during the rotation process, the use is not stable. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a limit rotating device and a rotating structure with a simple structure, which can not only perform the limit function but also realize the damping function through its own structure without additionally setting a damping structure.

[0004] The technical solution adopted by the utility model to solve its technical problem is: the limit rotating device includes a first turntable and a second turntable, the first turntable is threadedly connected to the second turntable, a rotating space is formed between the first turntable and the second turntable, a first limit portion is provided on the first turntable, a second limit portion is provided on the second turntable, both the first limit portion and the second limit portion are arranged in the rotating space, the first limit portion is arranged between the two second limit portions, or the second limit portion is arranged between the two first limit portions.

[0005] Preferably, the first turntable is provided with internal threads, the second turntable is provided with external threads, and a groove is formed on the side of the second turntable facing the first turntable to form the rotating space.

[0006] Preferably, the first limit portion includes a first limit screw, the first limit screw is arranged on the first turntable and extends into the rotating space, the second limit portion includes second limit screws, and the two second limit screws are arranged on the second turntable and extend into the rotating space.

[0007] Preferably, the two second limit screws are collinear with the center of the second turntable.

[0008] A rotating structure includes a first connecting member, a second connecting member and a limit rotating device, the first connecting member is connected to the first turntable, and the second connecting member is connected to the second turntable.

[0009] Preferably, the first connecting member includes a bracket, a support leg is provided on the lower side of the bracket, and the bracket is fixedly connected to the first turntable.

[0010] Preferably, the second connecting member includes a column. Through holes for the column to pass through are provided on the first turntable and the second turntable, and the column passes through the through holes and is fixedly connected to the second turntable.

[0011] Preferably, it further includes a clamp. Two semi-circular clamps are arranged on the lower side of the second turntable. The column is fixedly connected to the clamp, and the clamp is fixedly connected to the second turntable.

[0012] Preferably, the clamp is connected to the second turntable by bolts, and the bolts are inserted into the bolt holes of the second turntable from bottom to top.

[0013] Compared with the prior art, the beneficial effects of this technical solution are as follows:

[0014] In the present utility model, limiting parts are respectively arranged on the first turntable and the second turntable. A rotating space is formed between the first turntable and the second turntable. The first limiting part and the second limiting part both move within the rotating space and have the same movement track. The two first limiting parts limit the second limiting part or the two second limiting parts limit the first limiting part to achieve the limiting effect. The first turntable and the second turntable are connected by threads, and the generated frictional force forms damping, which can achieve relative position stillness without external force, and there is no need to additionally set a damping structure, and the structure is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of a rotating structure of the present utility model.

[0016] Figure 2 It is a cross-sectional view of a rotating structure of the present utility model.

[0017] Figure 3 It is a cross-sectional view of a limiting rotating device of the present utility model.

[0018] Figure 4 It is a schematic structural diagram of the first turntable of the present utility model.

[0019] Figure 5 It is a schematic structural diagram of the second turntable of the present utility model.

[0020] Wherein: 1. First turntable 101. First turntable bolt hole 2. Second turntable 201. Second turntable bolt hole 3. First limiting screw 4. Second limiting screw 5. Bracket 6. Column 601. Column bolt hole 7. Clamp 8. Rotating space 9. First bolt 10. Second bolt 11. Third bolt. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Figures 1 to 5 It is the best embodiment of the present utility model. The following further describes the present utility model in conjunction with the attached Figures 1 to 5 drawings.

[0022] Referring to Figure 1 , the rotating structure includes a first connecting member, a second connecting member, and a limiting rotation device connecting the first connecting member and the second connecting member. The first connecting member of the present utility model is a bracket 5, and a support leg is provided on the lower side of the bracket 5, which is fixedly supported on the ground or a working component. The second connecting member includes a column 6, and the column 6 is arranged at the central position of the bracket 5. The two realize the rotation of the column 6 relative to the bracket 5 through the limiting rotation device. A limiting structure is arranged on the limiting rotation device, and the rotation angle of the column 6 relative to the bracket 5 is limited through the limiting structure to meet the requirements.

[0023] Referring to Figures 2 to 5 , the limiting rotation device includes a first turntable 1 and a second turntable 2. The first turntable 1 is provided with internal threads, and the second turntable 2 is provided with external threads. The two are threadedly connected, and the generated frictional force forms a damping, which can achieve relative position static without external force.

[0024] A groove is formed inside the second turntable 2 to form a rotation space 8 for the limiting screw. The present utility model has 1 first limiting screw 3, which is arranged on the first turntable 1 and extends downward into the rotation space 8. There are 2 second limiting screws 4, which are arranged on the second turntable 2 and extend upward into the rotation space 8. Moreover, the distances between the first limiting screw 3 and the center of the first turntable 1 and between the second limiting screws 4 and the center of the second turntable 2 are the same, and the movement trajectories coincide. The protruding ends of the first limiting screw 3 and the second limiting screw 4 abut against each other after rotating a certain angle to achieve the limiting function. The positions of the two second limiting screws 4 on the second turntable 2 are 180°, and the rotation angle of the first limiting screw 3 is limited to be less than 180°.

[0025] In other embodiments, 2 first limiting screws 3 and 1 second limiting screw 4 can also be provided. The first limiting screws 3 are arranged on the first turntable 1 and extend downward into the rotation space 8. The second limiting screw 4 is arranged on the second turntable 2 and extends upward into the rotation space 8. The rotation angles of the two first limiting screws 3 are limited by one second limiting screw 4, and further the rotation angle of the second turntable 2 is limited.

[0026] The bracket 5 and the first turntable 1 are fixedly connected by a first bolt 9. Four first turntable bolt holes 101 are arranged on the first turntable 1. The first bolt 9 is arranged in the first turntable bolt holes 101 to fix the bracket 5 and the first turntable 1. The end of the first bolt 9 does not exceed the depth of the first turntable bolt holes 101 to avoid extending into the rotation space 8. A counterbore is also arranged on the first turntable 1, and the first limiting screw 3 is arranged in the counterbore and its end extends into the rotation space 8.

[0027] The support 5, the first turntable 1 and the second turntable 2 are provided with through holes for the column 6 to pass through. Two semi-circular clamps 7 are arranged on the lower side of the second turntable 2. After the column 6 passes through the through holes of the support 5, the first turntable 1 and the second turntable 2 in sequence, the end is fixed to the clamp 7 through the third bolt 11. A column bolt hole 601 is arranged on the column 6, and the third bolt 11 is arranged in the column bolt hole 601.

[0028] The clamp 7 is fixedly connected to the second turntable 2. Four second turntable bolt holes 201 are also arranged on the second turntable 2. The second bolt 10 is arranged in the second turntable bolt hole 201 from bottom to top. The end of the second bolt 10 does not exceed the depth of the second turntable bolt hole 201 to avoid extending into the rotation space 8.

[0029] The column 6 is fixedly connected to the second turntable 2 through the clamp 7. The support 5 is fixedly connected to the first turntable 1. The column 6 is rotationally connected to the support 5 through the first turntable 1 and the second turntable 2. The first turntable 1 and the second turntable 2 are threadedly connected to achieve relative position stillness without external force, and the 180° limiting function is achieved through the first limit screw 3 and the second limit screw 4.

[0030] Working process:

[0031] The support 5 is fixedly connected to the first turntable 1. The column 6 is fixedly connected to the second turntable 2 through the clamp 7. The first turntable 1 and the second turntable 2 are threadedly connected, and the generated frictional force forms a damping, which can achieve the stillness of the relative position between the support 5 and the column 6 without external force, and there is no need to additionally set a damping structure.

[0032] The first turntable 1 is provided with a first limit screw 3, and the second turntable 2 is provided with a second limit screw 4. When the first turntable 1 and the second turntable 2 rotate relatively, the movement trajectories of the first limit screw 3 and the second limit screw 4 in the rotation space 8 coincide. When they abut against each other after rotating a certain angle, the first turntable 1 and the second turntable 2 reach the limit point to achieve the limit of rotation.

[0033] The above are only the preferred embodiments of the present invention, and are not limitations on the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the technical solution content of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. A limit rotation device, characterized in that: It includes a first turntable (1) and a second turntable (2). The first turntable (1) is threadedly connected to the second turntable (2), and a rotating space (8) is formed between the first turntable (1) and the second turntable (2). A first limiting portion is provided on the first turntable (1), and a second limiting portion is provided on the second turntable (2). Both the first limiting portion and the second limiting portion are arranged within the rotating space (8). The first limiting portion is arranged between the two second limiting portions, or the second limiting portion is arranged between the two first limiting portions.

2. The a position-limiting rotating device according to claim 1, wherein: The first turntable (1) is provided with internal threads, and the second turntable (2) is provided with external threads. A groove is formed on the side of the second turntable (2) facing the first turntable (1) to form the rotating space (8).

3. The limit rotation device according to claim 1, characterized in that: The first limiting portion includes a first limiting screw (3). The first limiting screw (3) is arranged on the first turntable (1) and extends into the rotating space (8). The second limiting portion includes second limiting screws (4). The two second limiting screws (4) are arranged on the second turntable (2) and extend into the rotating space (8).

4. The a position-limiting rotation device according to claim 3, wherein: The two second limiting screws (4) are collinear with the center of the second turntable (2).

5. A rotating structure, characterized in that: It includes a first connecting member, a second connecting member, and the limiting rotating device according to any one of claims 1-4. The first connecting member is connected to the first turntable (1), and the second connecting member is connected to the second turntable (2).

6. The rotational structure according to claim 5, wherein: The first connecting member includes a bracket (5). Support legs are provided on the lower side of the bracket (5), and the bracket (5) is fixedly connected to the first turntable (1).

7. A rotating structure according to claim 5, characterized in that: The second connecting member includes a column (6). Through holes for the column (6) to pass through are provided on the first turntable (1) and the second turntable (2). The column (6) passes through the through holes and is fixedly connected to the second turntable (2).

8. The rotational structure according to claim 7, characterized in that: It further includes a clamp (7). Two semi-circular clamps (7) are arranged on the lower side of the second turntable (2). The column (6) is fixedly connected to the clamp (7), and the clamp (7) is fixedly connected to the second turntable (2).

9. The rotational structure according to claim 8, characterized in that: The clamp (7) is connected to the second turntable (2) by bolts. The bolts are inserted into the bolt holes of the second turntable (2) from bottom to top.

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