Big arm rotating mechanism

Abstract

The utility model discloses a big arm rotating mechanism which comprises a vertical rod, a lower rotating shaft and a bottom plate are arranged at one end of the vertical rod, the bottom plate is rotationally connected with the lower rotating shaft, a sliding groove is formed in the bottom plate, the sliding groove is in an arc shape and is an arc smaller than 360 degrees, a groove is formed in the position, located on the side edge of the sliding groove, of the bottom plate, a spring is arranged in the groove, and the spring is arranged in the groove. A friction block is arranged on the other side of the spring, a fifth screw is arranged on the lower rotating shaft, and the fifth screw is arranged in the sliding groove. According to the big arm rotating mechanism, a speed reduction structure of the friction block and the spring is arranged on the bottom plate, so that the friction block is always tightly attached to the outer surface of the lower rotating shaft, the speed reduction effect can be achieved during positioning, positioning is more accurate, the lower rotating shaft can be fixed when rotation is not needed, and using is more convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment parts and components, and in particular relates to a large arm rotating mechanism. Background Art

[0002] Nowadays, most people use moxibustion instruments to perform moxibustion operations. In actual use, it is often necessary to use acupoints in different directions. At this time, rotation is required to achieve this, so most of them use a large arm rotation mechanism to complete it.

[0003] However, the existing boom rotation mechanism adopts the connection mode of needle bearing and fixed column, and the needle bearing can be rotated relative to the fixed column. This will make the positioning inaccurate during rotation, and after rotating to the appropriate position, it cannot be fixed, so it rotates again. Utility Model Content

[0004] The purpose of the utility model is to provide a large arm rotating mechanism to solve the problems raised in the above background technology.

[0005] To achieve the above purpose, the utility model provides the following technical solutions: a large arm rotating mechanism, comprising

[0006] A vertical rod, one end of which is provided with a lower rotating shaft;

[0007] A bottom plate is rotatably connected to the lower rotating shaft, a slide groove is arranged on the bottom plate, the slide groove is arranged in an arc shape, and is an arc less than 360°, a groove is arranged on the side of the slide groove on the bottom plate, a spring is arranged in the groove, and a friction block is arranged on the other side of the spring;

[0008] The lower rotating shaft is provided with a screw five, and the screw five is arranged in the sliding groove.

[0009] Preferably, a needle roller bearing and a plane bearing are sleeved on the lower rotating shaft, and the needle roller bearing is located below the plane bearing.

[0010] Preferably, in any of the above schemes, a gap is provided between the needle roller bearing and the plane bearing.

[0011] Preferably in any of the above schemes, the outer surfaces of the needle roller bearing and the plane bearing are provided with rotating sleeves.

[0012] Preferably in any of the above schemes, a partition is provided on the inner wall of the rotating shaft sleeve, and the partition is consistent with the gap.

[0013] Preferably in any of the above solutions, the other end of the vertical rod is provided with a rear rotating rod and a second elbow.

[0014] The technical effects and advantages of the utility model are as follows: the upper arm rotating mechanism is provided with a deceleration structure of a friction block and a spring on the bottom plate, so that the friction block is always in close contact with the outer surface of the lower rotating shaft, which can play a deceleration role during positioning, making the positioning more accurate, and the lower rotating shaft can be fixed when rotation is not required, which is more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the structure of the needle roller bearing and the plane bearing of the utility model;

[0017] Figure 3 It is a structural schematic diagram of the bottom plate of the utility model;

[0018] Figure 4 It is a structural schematic diagram of the rotating shaft sleeve of the utility model.

[0019] In the figure: 301, spring; 302, friction block; 303, screw five; 304, rear rotating rod; 305, elbow two; 306, bottom plate; 307, needle bearing; 308, plane bearing; 3, vertical rod; 3010, rotating shaft sleeve; 3011, lower rotating shaft; 3012, partition table. DETAILED DESCRIPTION

[0020] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these implementation methods is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each implementation method of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features.

[0023] The utility model provides Figure 1-4 A large arm rotating mechanism shown includes

[0024] The vertical rod 3 has a lower rotating shaft 3011 sleeved on one end thereof, and the diameter of the lower rotating shaft 3011 is smaller than the diameter of the vertical rod 3;

[0025] The bottom plate 306 is rotatably connected with the lower rotating shaft 3011. A slide groove is arranged on the bottom plate 306. The slide groove is arranged in an arc shape and is an arc less than 360°. The lower rotating shaft 3011 is provided with a screw 5 303, and the screw 5 303 is located in the slide groove to limit the rotation mechanism to prevent the internal connecting line from breaking. A groove is arranged on the side of the slide groove on the bottom plate 306. A spring 301 is arranged in the groove. A friction block 302 is arranged on the other side of the spring 301. The friction block 302 forms friction with the outer surface of the lower rotating shaft 3011, so that the rotation mechanism can stop quickly and smoothly without shaking left and right.

[0026] A needle bearing 307 and a plane bearing 308 are sleeved on the rotating shaft 3011. The needle bearing 307 is located below the plane bearing 308. The outer surfaces of the needle bearing 307 and the plane bearing 308 are provided with a rotating shaft sleeve 3010. The needle bearing 307 and the plane bearing 308 are two types of bearings, so that the upper arm rotating mechanism can not only translate and rotate, but also rotate smoothly due to rolling friction and low friction.

[0027] A gap is provided between the needle bearing 307 and the plane bearing 308 , and a partition 3012 is provided on the inner wall of the rotating shaft sleeve 3010 , and the partition 3012 is consistent with the gap.

[0028] Specifically, the other end of the vertical rod 3 is provided with a rear rotating rod 304 and a second elbow 305 .

[0029] The bottom plate 306 is provided with a threaded hole, and the rotating shaft sleeve 3010 is also provided with a corresponding threaded hole. The two are fixed together by screws to limit the rotating shaft sleeve 3010 and prevent it from rotating.

[0030] When the upper arm rotating mechanism is in use, the vertical rod 3 is rotated. Under the action of the needle bearing 307 and the plane bearing 308, the upper arm rotating mechanism can not only translate and rotate, but also rotate smoothly due to the rolling friction and low friction. In this process, the friction block 302 always forms friction with the outer surface of the lower rotating shaft 3011 under the action of the spring 301, so that the rotating mechanism can stop quickly and smoothly without shaking left and right.

[0031] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A big arm rotating mechanism, characterized in that: include A vertical rod (3), one end of which is provided with a lower rotating shaft (3011); A bottom plate (306) is rotatably connected to the lower rotating shaft (3011), a slide groove is arranged on the bottom plate (306), the slide groove is arranged in an arc shape, and the arc is less than 360 degrees, a groove is arranged on the side of the slide groove on the bottom plate (306), a spring (301) is arranged in the groove, and a friction block (302) is arranged on the other side of the spring (301); The lower rotating shaft (3011) is provided with a screw five (303), and the screw five (303) is arranged in the sliding groove.

2. A boom rotation mechanism according to claim 1, characterized in that: The lower rotating shaft (3011) is sleeved with a needle bearing (307) and a plane bearing (308), and the needle bearing (307) is located below the plane bearing (308).

3. A big arm rotating mechanism according to claim 2, characterized in that: A gap is provided between the needle bearing (307) and the plane bearing (308).

4. A large arm rotating mechanism according to claim 3, characterized in that: The outer surfaces of the needle bearing (307) and the plane bearing (308) are provided with rotating shaft sleeves (3010).

5. The boom rotating mechanism according to claim 4, characterized in that: The inner wall of the rotating shaft sleeve (3010) is provided with a partition (3012), and the partition (3012) is consistent with the gap.

6. The boom rotating mechanism according to claim 1, characterized in that: The other end of the vertical rod (3) is provided with a rear rotating rod (304) and a second elbow (305).

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