Telescopic arm structure of mobile DR

Abstract

The utility model discloses a telescopic arm structure for moving a DR (Digital Radiography), which comprises an outer cylinder component, a middle cylinder component and an inner cylinder component which are sequentially arranged from outside to inside, and synchronous linkage mechanisms are arranged among an outer cylinder of the outer cylinder component, a middle cylinder of the middle cylinder component and an inner cylinder of the inner cylinder component. First concave guide groove parts are arranged on the upper side, the left side and the right side in the outer cylinder, reinforcing ribs are arranged on the first concave guide groove parts on the left side and the right side, and clearance holes for wiring are formed in the reinforcing ribs; first bearing sets matched with the first concave guide groove parts are installed on the upper side, the left side and the right side of the exterior of the middle cylinder correspondingly, an iron attraction guide rail is installed on the upper side in the middle cylinder, and second concave guide groove parts are formed in the left side and the right side in the middle cylinder correspondingly; a brake magnet assembly matched with the magnet guide rail is installed on the upper side outside the inner cylinder, second bearing sets matched with the second concave guide groove parts are installed on the left side and the right side outside the inner cylinder, and a third bearing set matched with the magnet guide rail is installed on the upper side outside the inner cylinder.

Description

Technical Field

[0001] The utility model relates to the technical field of telescopic arms, in particular to a telescopic arm structure of a mobile DR. Background Art

[0002] Mobile DR refers to a mobile X-ray imaging system, wherein the telescopic arm refers to a telescopic horizontal arm connecting the head assembly and the column.

[0003] The telescopic arm structure of mobile DR on the market currently has the following problems: 1. The structure is relatively bulky and complicated; 2. The space utilization rate is low; 3. The strength problems of bearings or profiles lead to poor performance; 4. Most of the wiring is exposed to the outside, affecting the appearance. In response to the above problems, a telescopic arm structure of mobile DR with a simpler structure, a more compact layout, and internal wiring is proposed. Summary of the invention

[0004] The purpose of the present application is to provide a telescopic arm structure for a mobile DR.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a telescopic arm structure of a mobile DR, comprising an outer cylinder assembly, a middle cylinder assembly and an inner cylinder assembly arranged in sequence from the outside to the inside, wherein a synchronous linkage mechanism is provided between the outer cylinder of the outer cylinder assembly, the middle cylinder of the middle cylinder assembly and the inner cylinder of the inner cylinder assembly, characterized in that the upper side and left and right sides of the outer cylinder are provided with a concave guide groove portion 1, one of the concave guide groove portions on the left and right sides is provided with a reinforcing rib, and an air-avoiding hole for routing is provided on the reinforcing rib; a bearing group 1 matching with the concave guide groove portion 1 is installed on the upper side and left and right sides of the outer middle cylinder, an iron-magnetic guide rail is installed on the upper side of the middle cylinder, and a concave guide groove portion 2 is installed on the left and right sides of the inner cylinder; a brake iron-magnetic assembly matching with the iron-magnetic guide rail is installed on the upper side of the outer inner cylinder, a bearing group 2 matching with the concave guide groove portion 2 is installed on the left and right sides of the outer inner cylinder, and a bearing group 3 matching with the iron-magnetic guide rail is installed on the upper side of the outer inner cylinder.

[0006] A buffer pad is installed on the inner cylinder.

[0007] The inner cylinder is also provided with a permanent magnetic magnet.

[0008] A first auxiliary inserting strip is inserted at the first position of the concave guide groove portion, and a second auxiliary inserting strip is inserted at the second position of the concave guide groove portion.

[0009] The bearing group 1 includes at least two concentric bearings 1 and at least two eccentric bearings 1, and the eccentric bearings 1 are arranged between the concentric bearings 1.

[0010] The bearing group 2 includes at least two concentric bearings 2 and at least two eccentric bearings 2, and the eccentric bearings 2 are arranged between the concentric bearings 2.

[0011] The bearing group three includes at least two concentric bearings three and at least two eccentric bearings three, the concentric bearings three are arranged on one side of the brake magnet assembly, and the eccentric bearings three are arranged on the other side of the brake magnet assembly.

[0012] The auxiliary insert bar 1 and the auxiliary insert bar 2 are both mirror-finished stainless steel insert bars.

[0013] In summary, the technical effects and advantages of the utility model are:

[0014] 1. The structure is more concise;

[0015] 2. The layout is more compact and reasonable;

[0016] 3. More stable performance;

[0017] 4. The wiring is more beautiful. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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.

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0020] Figure 2 It is a schematic diagram of the planar structure of the outer cylinder assembly in the utility model;

[0021] Figure 3 It is a three-dimensional structural schematic diagram of the middle cylinder assembly in the utility model;

[0022] Figure 4 It is a schematic diagram of the planar structure of the middle cylinder assembly in the utility model;

[0023] Figure 5 It is a three-dimensional structural schematic diagram of the inner cylinder assembly in the utility model;

[0024] In the figure: 10, outer cylinder assembly; 11, outer cylinder; 12, concave guide groove part one; 13, auxiliary insert strip one; 14, reinforcing rib; 20, middle cylinder assembly; 21, middle cylinder; 22, concentric bearing one; 23, eccentric bearing one; 24, magnetic guide rail; 25, concave guide groove part two; 26, auxiliary insert strip two; 30, inner cylinder assembly; 31, inner cylinder; 32, eccentric bearing two; 33, brake magnetic assembly; 34, rubber pad; 35, permanent magnetic; 36, eccentric bearing three; 37, concentric bearing three; 38, concentric bearing two; 40, synchronous linkage mechanism. DETAILED DESCRIPTION

[0025] 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.

[0026] like Figure 1 one Figure 5 As shown, the telescopic arm structure of the mobile DR includes an outer cylinder assembly 10, a middle cylinder assembly 20 and an inner cylinder assembly 30 arranged in sequence from the outside to the inside, and a synchronous linkage mechanism 40 is provided between the outer cylinder 11 of the outer cylinder assembly 10, the middle cylinder 21 of the middle cylinder assembly 20 and the inner cylinder 31 of the inner cylinder assembly 30. The upper side and the left and right sides of the outer cylinder 11 are provided with concave guide groove portions 12, which can form a triangular layout. In this way, when matched with the middle cylinder 21, the three concave guide groove portions 12 can constrain the middle cylinder 21 in the up, down, left and right directions, and can only be extended and retracted along the axial direction; the concave guide groove portions 12 on the left and right sides are provided with reinforcing ribs 14, and the reinforcing ribs 14 are provided with avoidance holes for wiring. The two concave guide groove portions 12 on the left and right sides of the outer cylinder 11 are provided with reinforcing ribs 14 at the concave guide groove portions 12 due to the relatively large force, and the reinforcing ribs 14 are provided with avoidance holes. The hollow hole can facilitate the wiring of the column pulley part through the outer tube 11 to improve the appearance; the upper side and left and right sides of the middle tube 21 are both installed with a bearing group 1 that matches the concave guide groove part 12, the upper side of the middle tube 21 is installed with an iron-absorbing guide rail 24, and the left and right sides of the middle tube 21 are both provided with a concave guide groove part 25; the upper side of the inner tube 31 is installed with a brake iron-absorbing assembly 33 that matches the iron-absorbing guide rail 24. In this embodiment, the electromagnet of the brake iron-absorbing assembly 33 is a permanent magnet, and the installation direction is from bottom to top. In this way, when the power is turned on and released, it can be smoothly retracted downward by partially using the weight of the electromagnet itself; the left and right sides of the inner tube 31 are both installed with a bearing group 2 that matches the concave guide groove part 25, and the upper side of the inner tube 31 is installed with a bearing group 3 that matches the iron-absorbing guide rail 24.

[0027] A buffer pad 34 is installed on the inner cylinder 31. In the present embodiment, a buffer rubber pad is installed on the inner cylinder 31 to avoid the impact sound when the telescopic arm is retracted to the limit position. As for the buffer rubber pad, the height of the buffer rubber pad can be adjusted by adding or removing adjustment gaskets, which adopts the existing technology.

[0028] A permanent magnet 35 is also installed on the inner cylinder 31. When the telescopic arm is retracted to the shortest position, the permanent magnet 35 will be attracted to the pulley plate on which the telescopic arm is installed. This can guide the operator to retract to the correct position on the one hand, and avoid axial shaking after retraction on the other hand.

[0029] An auxiliary inserting strip 13 is inserted into the concave guide groove portion 12 , and an auxiliary inserting strip 26 is inserted into the concave guide groove portion 25 .

[0030] The bearing group 1 includes at least two concentric bearings 22 and at least two eccentric bearings 23, and the eccentric bearing 23 is arranged between the concentric bearings 22; the middle cylinder 21 is adjusted by the concentric bearings 22 and the eccentric bearings 23 to cooperate with the concave guide groove portion 12 of the outer cylinder 11, the concentric bearings 22 are arranged at both ends of the middle cylinder 21, and the eccentric bearings 23 are arranged in the middle of the middle cylinder 21. By adjusting the eccentric bearings 23, the axial sliding of the middle cylinder 21 can be smooth without shaking or sticking.

[0031] The outer side of the middle cylinder 21 is provided with a bearing group 1 that cooperates with the outer cylinder 11, and the inner side is provided with two concave guide grooves 25 that cooperate with the inner cylinder 31 and an iron-absorbing guide rail 24. The iron-absorbing guide rail 24 is fastened to the middle cylinder 21 by countersunk screws, wherein the mounting hole of the iron-absorbing guide rail 24 should avoid the position of the bearing group 1 for easy installation. One side of the iron-absorbing guide rail 24 has a blind hole to avoid the fastening screws for installing the bearing group 1, and the other side is a flat surface without holes to facilitate the braking of the brake iron-absorbing assembly 33. The iron-absorbing guide rail 24 has two functions, one is to serve as a guide to restrict the left and right displacement of the inner cylinder 31 relative to the middle cylinder 21, and the other function is the axial sliding suction braking; the clearance between the brake iron-absorbing assembly 33 and the iron-absorbing guide rail 24 is controlled at about 0.5-1mm, and braking is achieved when the electromagnet is powered on and off.

[0032] Bearing group 2 includes at least two concentric bearings 2 38 and at least two eccentric bearings 2 32, and the eccentric bearings 2 32 are arranged between the concentric bearings 2 38; bearing group 3 includes at least two concentric bearings 37 and at least two eccentric bearings 36, and the concentric bearings 37 are arranged on one side of the brake magnet assembly 33, and the eccentric bearings 36 are arranged on the other side of the brake magnet assembly 33; bearing group 2 and bearing group 3 are installed on the inner cylinder 31 as guide parts for constraining the inner cylinder 31. It is worth noting that the layout of the guide part of the inner cylinder 31 is also triangular distribution, which is a three-line constraint.

[0033] The auxiliary insert 13 and the auxiliary insert 2 26 are both mirror-finished stainless steel inserts. In practice, the mirror surface of the mirror-finished stainless steel insert is installed toward the bearing mating surface, so that the bearing can be ensured to be smooth and free of jamming during the sliding process.

[0034] The brake magnet assembly 33 is installed on the inner cylinder 31, and the synchronous linkage mechanism 40 connects the outer cylinder 11, the middle cylinder 21, and the inner cylinder 31, and realizes synchronous telescopic movement through the movable pulley principle. This adopts the existing technology; so when the magnet brake assembly and the magnet guide rail 24 are attracted and relatively still, the middle cylinder assembly 20 and the outer cylinder assembly 10 are also relatively still. The magnet brake assembly is installed on the inner cylinder 31, and the inner cylinder 31 is connected to the head assembly and is fixed relative to the head assembly, so the cable of the magnet brake assembly is also relatively fixed from the head assembly, thereby avoiding the pulling and folding of the cable by the telescopic arm during the telescopic process.

[0035] In practice, the guide structure of the bearing and the concave guide groove in the structure of the present invention can be replaced with a linear guide rail or other guide mechanisms, and the same effect can still be achieved.

[0036] 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.

[0037] 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 telescopic arm structure for a mobile DR, comprising an outer cylinder assembly (10), a middle cylinder assembly (20) and an inner cylinder assembly (30) arranged in sequence from outside to inside, wherein a synchronous linkage mechanism (40) is provided between the outer cylinder (11) of the outer cylinder assembly (10), the middle cylinder (21) of the middle cylinder assembly (20) and the inner cylinder (31) of the inner cylinder assembly (30), characterized in that: The upper side and the left and right sides of the outer cylinder (11) are provided with a concave guide groove part (12), and the concave guide groove part (12) on the left and right sides are provided with reinforcing ribs (14), and the reinforcing ribs (14) are provided with air-avoiding holes for routing wires; the upper side and the left and right sides of the middle cylinder (21) are provided with a bearing group (1) matching with the concave guide groove part (12), and the upper side of the middle cylinder (21) is provided with an iron-absorbing guide rail (24), and the left and right sides of the middle cylinder (21) are provided with a concave guide groove part (25); the upper side of the outer side of the inner cylinder (31) is provided with a brake iron-absorbing assembly (33) matching with the iron-absorbing guide rail (24), and the left and right sides of the outer side of the inner cylinder (31) are provided with a bearing group (2) matching with the concave guide groove part (25), and the upper side of the outer side of the inner cylinder (31) is provided with a bearing group (3) matching with the iron-absorbing guide rail (24).

2. The telescopic arm structure of the mobile DR according to claim 1, characterized in that: A buffer pad (34) is installed on the inner cylinder (31).

3. The telescopic arm structure of the mobile DR according to claim 1, characterized in that: A permanent magnetic magnet (35) is also installed on the inner cylinder (31).

4. The telescopic arm structure of the mobile DR according to claim 1, characterized in that: An auxiliary inserting strip one (13) is inserted into the concave guide groove portion one (12), and an auxiliary inserting strip two (26) is inserted into the concave guide groove portion two (25).

5. The telescopic arm structure of the mobile DR according to claim 1, characterized in that: The bearing group 1 includes at least two concentric bearings 1 (22) and at least two eccentric bearings 1 (23), and the eccentric bearing 1 (23) is arranged between the concentric bearings 1 (22).

6. The telescopic arm structure of the mobile DR according to claim 1, characterized in that: The second bearing group includes at least two second concentric bearings (38) and at least two second eccentric bearings (32), and the second eccentric bearing (32) is arranged between the second concentric bearings (38).

7. The telescopic arm structure of the mobile DR according to claim 1, characterized in that: The bearing group three includes at least two concentric bearings three (37) and at least two eccentric bearings three (36), wherein the concentric bearing three (37) is arranged on one side of the brake magnet assembly (33), and the eccentric bearing three (36) is arranged on the other side of the brake magnet assembly (33).

8. The telescopic arm structure of the mobile DR according to claim 4, characterized in that: The auxiliary insert strip 1 (13) and the auxiliary insert strip 2 (26) are both mirror-finished stainless steel insert strips.

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