Medical large-scale superfinishing pin shaft bearing

Abstract

The utility model discloses a medical large-scale superfinishing pin shaft bearing which comprises an outer shaft washer, a sliding bead is embedded and installed on the outer wall of a pin shaft in a rolling mode, a limiting installation ring is installed on the inner wall of a threaded ring groove in an inserted mode, a rolling shaft and the sliding bead are connected with a sliding rail in a sliding mode, and a positioning inserting groove is formed in one end of the pin shaft. And a mounting block is inserted into the inner wall of the positioning slot, a positioning insertion block is fixedly connected to one end of the side face of the mounting block, and a second fixing bolt is inserted into the positioning insertion block. According to the medical large superfinishing pin shaft bearing, double sliding rotation can be conducted through the outer shaft ring, the inner shaft ring and the pin shaft through the rolling shaft and the sliding balls, the rotating effect is good, the outer shaft ring, the inner shaft ring and the pin shaft can be spirally disassembled and assembled through the threaded ring grooves and the limiting installation rings, the rolling shaft and the sliding balls can be rapidly disassembled, assembled and replaced conveniently, and the service life of the bearing is prolonged. And moreover, the mounting block can be quickly adapted and replaced through a positioning slot, a second fixing bolt and a positioning insertion block, so that the adaptive mounting is convenient, and the use is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of medical pin shaft bearings, in particular to a large-scale medical super-precision pin shaft bearing. Background Art

[0002] Pins are a type of standardized fastener that can be used for static fixed connections or relative movement with the connected parts. They are mainly used at the hinge of two parts to form a hinge connection. Pins are usually locked with cotter pins, which are reliable and easy to disassemble. Large pin bearings are required in large medical devices.

[0003] The existing CN106438681A thrust ball bearing with a pin shaft provides convenience for the pin connection of two movable parts of scissors-like products and connecting rod transmissions. It can not only adjust the pin connection gap between the two movable parts, but also prevent the pin connection of the two movable parts from loosening, thereby improving the matching accuracy of the two movable parts and the performance of the product. However, there are some shortcomings. The existing equipment has poor rotation flexibility, and the disassembly and assembly operations are inconvenient. Independent parts cannot be replaced and it is inconvenient to use. Therefore, a medical large-scale ultra-precision pin shaft bearing is needed to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a large-scale medical ultra-precision pin bearing to solve the problems of poor rotation flexibility of the thrust ball bearing with a pin mentioned in the above background technology, inconvenient disassembly and assembly, inability to replace independent parts, and inconvenient use.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a medical large-scale ultra-precision pin bearing, comprising an outer shaft ring, an inner shaft ring is installed on the inner wall of the outer shaft ring, and a pin is inserted and installed on the inner wall of the inner shaft ring, a mounting groove is provided on the side edge of the outer shaft ring, a splicing groove is provided on the outer wall of the inner shaft ring, and a roller is inserted and installed on the inner wall of the splicing groove, a rotating groove is provided at the center of the inner wall of the roller, and a third fixing bolt is inserted and installed on the inner wall of the rotating groove, and splicing buckle grooves are provided on the edges at both ends of the inner shaft ring, and a splicing buckle groove is inserted and installed on the inner wall of the splicing buckle groove. A splicing installation plate, one end of the splicing installation plate is plugged and installed with a first fixing bolt, the outer wall of the pin shaft is inlaid with a sliding ball rollingly installed, the outer shaft ring and the inner wall of the splicing installation plate are both provided with a slide rail, and the side of the slide rail is provided with a threaded ring groove, the inner wall of the threaded ring groove is plugged and installed with a limited mounting ring, the roller and the sliding ball are slidably connected to the slide rail, one end of the pin shaft is provided with a positioning slot, and the inner wall of the positioning slot is plugged and installed with a mounting block, one end of the side of the mounting block is fixedly connected with a positioning plug block, and the positioning plug block is plugged and installed with a second fixing bolt.

[0006] Preferably, the outer shaft ring is connected to the inner shaft ring in a sliding and rotatable manner in the slide rail via a roller, and the inner shaft ring is connected to the pin in a sliding manner via a sliding ball.

[0007] Preferably, the pin shaft is fixedly installed on the splicing mounting plate by means of a first fixing bolt which is engaged with the splicing buckle groove.

[0008] Preferably, the mounting block is installed in a positioning slot by means of a positioning plug block and a positioning plug block is fixedly connected to the positioning slot by bolts via a second fixing bolt, and the positioning slot, the second fixing bolt and the positioning plug block are distributed in a ring shape.

[0009] Preferably, the roller and the sliding ball are connected to the slide rail in a rotational sliding manner via a limit mounting ring, and the limit mounting ring is spirally spliced ​​and installed with the outer shaft ring and the splicing mounting disk via a threaded ring groove.

[0010] Preferably, the roller is bolt-joined to the splicing groove via a third fixing bolt, and the roller is rotationally connected to the splicing groove in the rotating groove via the third fixing bolt.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: the medical large-scale ultra-precision pin bearing can perform double sliding rotation through the outer shaft ring, the inner shaft ring and the pin through the roller and the sliding ball, with good rotation effect, and the outer shaft ring, the inner shaft ring and the pin can be spirally disassembled and assembled through the threaded ring groove and the limit mounting ring, which is convenient for quickly disassembling and replacing the roller and the sliding ball, and the mounting block can be quickly adapted and replaced through the positioning slot, the second fixing bolt and the positioning plug block, which is convenient for adaptation and installation and more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a front view of a large medical super-precision pin bearing of the utility model;

[0013] Figure 2 This is a cross-sectional view of a large medical super-precision pin bearing of the utility model;

[0014] Figure 3 This is a cross-sectional view of a large medical ultra-precision pin bearing of the utility model;

[0015] Figure 4 This utility model is a medical large-scale super-precision pin bearing Figure 2 Enlarged view of point A in the middle;

[0016] Figure 5 This utility model is a medical large-scale super-precision pin bearing Figure 2 Enlarged view of point B in the middle;

[0017] Figure 6 This utility model is a medical large-scale super-precision pin bearing Figure 3 Enlarged view of point C in the middle;

[0018] Figure 7This utility model is a medical large-scale super-precision pin bearing Figure 3 Enlarged view of point D in the middle.

[0019] In the figure: 1. outer shaft ring, 2. inner shaft ring, 3. pin shaft, 4. mounting groove, 5. mounting block, 6. roller, 7. splicing buckle groove, 8. splicing mounting plate, 9. slide ball, 10. first fixing bolt, 11. positioning slot, 12. second fixing bolt, 13. positioning plug block, 14. slide rail, 15. threaded ring groove, 16. limit mounting ring, 17. third fixing bolt, 18. rotation groove, 19. splicing groove. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-7 The utility model provides a technical solution: a medical large-scale super-precision pin bearing, comprising an outer shaft ring 1, an inner shaft ring 2, a pin 3, a mounting groove 4, a mounting block 5, a roller 6, a splicing buckle groove 7, a splicing mounting plate 8, a sliding ball 9, a first fixing bolt 10, a positioning slot 11, a second fixing bolt 12, a positioning plug block 13, a slide rail 14, a threaded ring groove 15, a limit mounting ring 16, a third fixing bolt 17, a rotation groove 18 and a splicing groove 19. The inner shaft ring 2 is installed on the inner wall of the outer shaft ring 1, and the pin 3 is inserted and installed on the inner wall of the inner shaft ring 2. The outer shaft ring 1 is connected to the inner shaft ring 2 in a sliding and rotating manner in the slide rail 14 through the roller 6, and the inner shaft ring 2 is connected to the pin 3 in a sliding manner through the sliding ball 9, so that the outer shaft ring 1, the inner shaft ring 2 and the pin 3 can be double-rotated, which is more flexible.

[0022] The pin shaft 3 is fixedly installed on the splicing mounting plate 8 with the splicing buckle groove 7 by a first fixing bolt 10, so that the pin shaft 3 can be installed more stably and disassembled and assembled conveniently. A mounting groove 4 is provided on the side edge of the outer shaft ring 1, and a splicing groove 19 is provided on the outer wall of the inner shaft ring 2, and a roller 6 is inserted and installed on the inner wall of the splicing groove 19. The roller 6 and the sliding ball 9 are rotationally and slidingly connected to the slide rail 14 through a limiting mounting ring 16, and the limiting mounting ring 16 is spirally spliced ​​and installed with the outer shaft ring 1 and the splicing mounting plate 8 through a threaded ring groove 15, so that the roller 6 and the sliding ball 9 can be conveniently supported by the limiting mounting ring 16, and can be quickly and easily disassembled and assembled, and can be easily replaced and used independently.

[0023] The roller 6 is bolt-joined with the splicing groove 19 by the third fixing bolt 17, and the roller 6 is rotationally connected with the splicing groove 19 in the rotating groove 18 by the third fixing bolt 17, so that the roller 6 rolls stably and is easy to disassemble and assemble. A rotating groove 18 is opened at the center of the inner wall of the roller 6, and the third fixing bolt 17 is inserted and installed on the inner wall of the rotating groove 18. Splicing buckle grooves 7 are opened at the edges of both ends of the inner shaft ring 2, and a splicing installation disk 8 is inserted and installed on the inner wall of the splicing buckle groove 7. A first fixing bolt 10 is inserted and installed at one end of the splicing installation disk 8. A sliding ball 9 is inlaid and rollingly installed on the outer wall of the pin shaft 3. A slide rail 14 is opened on the inner wall of the outer shaft ring 1 and the splicing installation disk 8, and a threaded ring groove 15 is opened on the side of the slide rail 14. A limited mounting ring 16 is inserted and installed on the inner wall of the threaded ring groove 15, and the roller 6 and the sliding ball 9 are slidably connected with the slide rail 14.

[0024] A positioning slot 11 is provided at one end of the pin shaft 3, and a mounting block 5 is installed on the inner wall of the positioning slot 11. The mounting block 5 is installed in the positioning slot 11 in a positioning and insertion manner with the pin shaft 3 through a positioning plug block 13, and the positioning plug block 13 is bolted and fixedly connected to the positioning slot 11 through a second fixing bolt 12. The positioning slot 11, the second fixing bolt 12 and the positioning plug block 13 are distributed in a ring-shaped position, so that the mounting block 5 is easy to position and disassemble, and is convenient for flexible adaptation and installation. It is easy to use. A positioning plug block 13 is fixedly connected to one end of the side of the mounting block 5, and the second fixing bolt 12 is installed on the positioning plug block 13.

[0025] Working principle: When using the medical large-scale ultra-precision pin bearing, firstly, the pin 3 of the device is positioned and inserted with the inner shaft ring 2 in the splicing buckle groove 7 through the splicing mounting plate 8, and fixed with the annular bolt through the first fixing bolt 10, and then the outer shaft ring 1 is fixed to the device through the mounting groove 4, and then the pin 3 is fixed to the device through the mounting block 5, and then double rotation is performed through the roller 6 and the sliding ball 9. When adaptive installation is required, the mounting block 5 can be inserted and disassembled through the positioning slot 11, the second fixing bolt 12 and the positioning plug-in block 13, and when the roller 6 needs to be replaced, the limit mounting ring 16 can be screwed open through the threaded ring groove 15, and then the outer shaft ring 1 is removed, and then the third fixing bolt 17 is loosened, and then the roller 6 is independently disassembled and assembled for quick replacement. This is the use process of the medical large-scale ultra-precision pin bearing.

[0026] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may 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 shall be included in the protection scope of the present invention.

Claims

1. A large-scale ultra-precision pin bearing for medical use, comprising an outer shaft ring (1), an inner shaft ring (2) being mounted on the inner wall of the outer shaft ring (1), and a pin (3) being inserted and mounted on the inner wall of the inner shaft ring (2), characterized in that: The side edge of the outer shaft ring (1) is provided with a mounting groove (4); the outer wall of the inner shaft ring (2) is provided with a splicing groove (19), and a roller (6) is inserted and installed in the inner wall of the splicing groove (19); a rotation groove (18) is provided at the center position of the inner wall of the roller (6), and a third fixing bolt (17) is inserted and installed in the inner wall of the rotation groove (18); the edges of both ends of the inner shaft ring (2) are provided with splicing buckle grooves (7), and a splicing mounting plate (8) is inserted and installed in the inner wall of the splicing buckle groove (7); one end of the splicing mounting plate (8) is inserted and installed with a first fixing bolt (10); the outer wall of the pin shaft (3) is inlaid with a rolling mounting The outer shaft ring (1) and the splicing installation plate (8) are provided with a slide rail (14) on their inner walls, and a threaded ring groove (15) is provided on the side of the slide rail (14), and a limit mounting ring (16) is installed on the inner wall of the threaded ring groove (15), the roller (6) and the slide ball (9) are slidably connected to the slide rail (14), a positioning slot (11) is provided on one end of the pin shaft (3), and a mounting block (5) is installed on the inner wall of the positioning slot (11), and a positioning plug block (13) is fixedly connected to one end of the side of the mounting block (5), and a second fixing bolt (12) is installed on the positioning plug block (13).

2. A medical large-scale super-precision pin bearing according to claim 1, characterized in that: The outer shaft ring (1) is connected to the inner shaft ring (2) in a sliding and rotating manner in a slide rail (14) via a roller (6), and the inner shaft ring (2) is connected to the pin (3) in a sliding manner via a sliding ball (9).

3. A medical large-scale super-precision pin bearing according to claim 2, characterized in that: The pin shaft (3) is fixedly mounted on the splicing mounting plate (8) by means of a first fixing bolt (10) in a bolt-engaged manner with the splicing buckle groove (7).

4. A medical large-scale super-precision pin bearing according to claim 3, characterized in that: The mounting block (5) is installed in a positioning insertion engagement with the pin shaft (3) in the positioning slot (11) via a positioning insert block (13), and the positioning insert block (13) is bolt-fixedly connected to the positioning slot (11) via a second fixing bolt (12), and the positioning slot (11), the second fixing bolt (12) and the positioning insert block (13) are distributed in an annular position.

5. A medical large-scale super-precision pin bearing according to claim 4, characterized in that: The roller (6) and the sliding ball (9) are connected to the slide rail (14) in a rotational sliding manner via a limit mounting ring (16), and the limit mounting ring (16) is spirally spliced ​​and mounted with the outer shaft ring (1) and the splicing mounting plate (8) via a threaded ring groove (15).

6. A medical large-scale super-precision pin bearing according to claim 5, characterized in that: The roller (6) is bolt-joined and installed with the splicing groove (19) via a third fixing bolt (17), and the roller (6) is rotationally connected with the splicing groove (19) in the rotating groove (18) via the third fixing bolt (17).

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