Column rotation limiting structure of mobile DR (Digital Radiography)

Abstract

The utility model discloses a stand column rotation limiting structure of a movable DR, a stand column is connected with an outer ring of a rotation supporting bearing, an inner ring of the rotation supporting bearing is fixed on a chassis, the stand column rotation limiting structure is characterized by comprising a limiting ring, a limiting pin and a limiting screw, the limiting ring is rotatably arranged between the rotation supporting bearing and the chassis, and the limiting pin is arranged on the limiting ring. The limiting ring is provided with a limiting part protruding outwards, the limiting pin is installed on an outer ring of the rotary supporting bearing, the limiting screw is installed on the chassis, and the limiting pin and the limiting screw can abut against the limiting part.

Description

Technical Field

[0001] The utility model relates to the technical field of rotation limiting, in particular to a column rotation limiting structure of a mobile DR. Background Art

[0002] Mobile DR refers to a mobile X-ray imaging system, wherein the column refers to the front column of the mobile DR, which can rotate.

[0003] At present, the column rotation limit angle of mobile DR on the market is usually ±330°, but the structure is relatively complex, and it is usually achieved by milling grooves on the surface of the relative rotating structure. On the one hand, the processing cost is high and the assembly is relatively complicated. On the other hand, it is highly dependent on the rotating mechanism itself, and some characteristics of the rotating structure must be changed to implement installation. That is, the column rotation limit structure of mobile DR on the market currently has the following problems: 1. The structure is relatively complex; 2. The processing cost is high; 3. The limit structure is highly dependent on the rotating structure and cannot be installed in some scenarios. In response to the above problems, a column rotation limit structure with a simpler structure, lower processing cost, and more convenient installation is proposed without changing the rotating structure. Summary of the invention

[0004] The purpose of the present application is to provide a column rotation limiting structure for a mobile DR.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a column rotation limiting structure of a mobile DR, wherein the column and the outer ring of the slewing support bearing are connected, and the inner ring of the slewing support bearing is fixed on the chassis, and is characterized in that the column rotation limiting structure includes a limiting ring, a limiting pin and a limiting screw, the limiting ring is rotatably arranged between the slewing support bearing and the chassis, the limiting ring has a limiting portion protruding outward, the limiting pin is installed on the outer ring of the slewing support bearing, the limiting screw is installed on the chassis, and the limiting pin and the limiting screw can respectively abut against the limiting portion.

[0006] The bottom of the inner ring of the slewing support bearing is provided with an auxiliary ring protruding downward, and the auxiliary ring is higher than the outer ring, and the limiting ring is rotatably connected to the auxiliary ring.

[0007] The limiting pin and the limiting screw are both arranged in a staggered manner.

[0008] The inner ring of the slewing support bearing is fixed on the chassis by fastening screws.

[0009] In summary, the technical effects and advantages of the utility model are:

[0010] 1. The structure is relatively simple, easy to process and low cost.

[0011] 2. Easy to install, can be used as an independent rotation limit mechanism, without changing the characteristics of related matching parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art description are briefly introduced below.

[0013] Figure 1 It is an exploded view of the utility model;

[0014] Figure 2 The planar structure of the utility model is shown in FIG. Figure 1 ;

[0015] Figure 3 The planar structure of the utility model is shown in FIG. Figure 2 ;

[0016] Figure 4 The planar structure of the utility model is shown in FIG. Figure 3 ;

[0017] Figure 5 It is a three-dimensional structural schematic diagram of the slewing support bearing in the utility model;

[0018] In the figure: 1, slewing support bearing; 2, limit pin; 3, fastening screw; 4, limit ring; 4a, limit part; 5, limit screw. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] like Figure 1-Figure 5 As shown, the column rotation limit structure of the mobile DR, the column and the outer ring of the slewing support bearing 1 are connected, the inner ring of the slewing support bearing 1 is fixed on the chassis, specifically: the inner ring of the slewing support bearing 1 is fixed to the chassis by a fastening screw 3; the column rotation limit structure includes a limit ring 4, a limit pin 2 and a limit screw 5, the limit ring 4 is rotatably arranged between the slewing support bearing 1 and the chassis, the limit ring 4 has a limiting portion 4a protruding outward, the limit pin 2 is installed on the outer ring of the slewing support bearing 1, the limit screw 5 is installed on the chassis, and the limit pin 2 and the limit screw 5 can respectively abut against the limiting portion 4a.

[0021] The bottom of the inner ring of the slewing support bearing 1 has an auxiliary ring protruding downward, and the auxiliary ring is higher than the outer ring, and the limit ring 4 is rotatably connected to the auxiliary ring; the inner ring of the slewing support bearing 1 is higher than the outer ring, on the one hand to avoid the outer ring from rubbing against the chassis when rotating, on the other hand as a positioning structure of the limit ring 4, the limit ring 4 is flexibly slidable on the auxiliary ring of the slewing support bearing 1; in practice, the auxiliary ring on the slewing support bearing 1 can be changed to the chassis to still achieve the same effect.

[0022] The limit pin 2 and the limit screw 5 are arranged in a staggered manner so as not to interfere with each other during sliding. Figure 2 The position is 0° of the column, and the limit pin 2 is connected to the outer ring of the slewing support bearing 1. When the column rotates 330° counterclockwise, it will reach Figure 3 In the position shown, since the limiting portion 4a of the limiting ring 4 is blocked by the limiting screw 5, and the limiting screw 5 is fixed to the chassis, the position of the column is restricted at this time.

[0023] Back to Figure 2 At the 0° position shown in the figure, when the column rotates 330° clockwise, the limit pin 2 will push the limiting portion 4a of the limit ring 4 to rotate until it reaches Figure 4 In the position shown, the limiting ring 4 is blocked by the limiting screw 5, and the position of the column is restricted at this time.

[0024] In this way, the ±330° limit is achieved, and the adjustment of the limit angle depends on the width of the limiting part 4a. In the current state, if the width of the limiting part 4a of the limit ring 4 increases, the limit angle will be less than ±330°, and if the width of the limiting part 4a of the limit ring 4 decreases, the limit angle will be greater than ±330°, but not greater than ±360°. It is mainly used for the ±330° limit of the column rotation of the mobile DR, and other scenarios with a limit less than ±360°.

[0025] In summary, 1. A simpler structure realizes the column rotation limit function of the mobile DR; 2. The processing cost is low, and there is no need to mill grooves on the chassis and the slewing support bearing 1; 3. It is easy to install, and only requires a limit ring 4 and two limit structural parts; 4. It can be applied to more scenarios without changing the rotation structure.

[0026] The above components are all common standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0027] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A column rotation limiting structure for a mobile DR, wherein the column is connected to the outer ring of a slewing support bearing (1), and the inner ring of the slewing support bearing (1) is fixed on a chassis, characterized in that: The column rotation limiting structure comprises a limiting ring (4), a limiting pin (2) and a limiting screw (5); the limiting ring (4) is rotatably arranged between the slewing support bearing (1) and the chassis; the limiting ring (4) has a limiting portion (4a) protruding outward; the limiting pin (2) is mounted on the outer ring of the slewing support bearing (1); the limiting screw (5) is mounted on the chassis; and the limiting pin (2) and the limiting screw (5) can each abut against the limiting portion (4a).

2. The column rotation limiting structure of the mobile DR according to claim 1 is characterized in that: The bottom of the inner ring of the slewing support bearing (1) is provided with an auxiliary ring protruding downwards, and the auxiliary ring is higher than the outer ring, and the limiting ring (4) is rotatably connected to the auxiliary ring.

3. The column rotation limiting structure of the mobile DR according to claim 1 is characterized in that: The limiting pin (2) and the limiting screw (5) are arranged in a staggered manner.

4. The column rotation limiting structure of the mobile DR according to claim 1 is characterized in that: The inner ring of the slewing support bearing (1) is fixed to the chassis by means of fastening screws (3).

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