Locking structure for fixing molecular pump bearing

Abstract

The utility model discloses a locking structure for fixing a molecular pump bearing, which comprises a fixed arm, the upper part of the fixed arm is provided with a movable arm, one end of the fixed arm is provided with a connecting groove, the joint of the movable arm and the fixed arm is provided with a connecting block, and the connecting block and the connecting groove are mutually embedded. The extension blocks are arranged on the side faces of the fixed arm and the movable arm, the fixing pins are arranged in the extension blocks, the fixing nuts are arranged on the upper portions of the fixing pins, the fixing nuts are in threaded connection with the fixing pins, the fixing grooves are formed in the fixed arm and the movable arm, and the bearing rings are installed in the fixing grooves. The limiting ring is arranged on the surface of the bearing ring and located in the fixing groove, during installation, the limiting ring of the bearing ring is placed in the fixing groove, the bearing ring is prevented from being disengaged, the movable arm is rotated so that the bearing ring can be clamped by the movable arm and the fixed arm, the fixing nut is rotated so that the bearing ring can be fixed, the structure is simple, and installation operation is convenient and fast.

Description

Technical Field

[0001] This utility model relates to the field of molecular pump bearing technology, and more specifically to a locking structure for fixing molecular pump bearings. Background Technology

[0002] A molecular pump is a vacuum pump that uses a high-speed rotating rotor to transfer momentum to gas molecules, giving them a directional velocity, thereby compressing them and driving them toward the exhaust port to be pumped away by the forestage. A molecular pump has a central shaft inside, and bearings are fitted on the central shaft to reduce the coefficient of friction during its movement and to ensure its rotational accuracy.

[0003] Existing molecular pump bearings experience significant vibrations during high-speed rotation, which can easily lead to misalignment, and their installation is complex. Therefore, a new technical solution is needed to address this issue. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a locking structure for fixing molecular pump bearings, thereby solving the problems mentioned in the background section.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a locking structure for fixing a molecular pump bearing, comprising: a fixed arm, a movable arm provided on the upper part of the fixed arm, a connecting groove provided at one end of the fixed arm and a connecting block provided at the connection between the movable arm and the fixed arm, the connecting block and the connecting groove being interlocked, a rotating shaft provided inside the connecting groove and passing through the connecting groove and the connecting block, the movable arm being rotatably connected to the fixed arm via the rotating shaft, extension blocks provided on the sides of the fixed arm and the movable arm and a fixing pin provided inside the extension blocks, a fixing nut provided on the upper part of the fixing pin and threadedly connected to the fixing pin, a fixing groove provided inside the fixed arm and the movable arm and a bearing ring installed inside the fixing groove, a limit ring provided on the surface of the bearing ring and the limit ring being located inside the fixing groove.

[0006] In a preferred embodiment of this utility model, the interior of the fixed arm and the movable arm is arranged in a semi-circular structure.

[0007] In a preferred embodiment of this utility model, both sides of the extension block are provided with fixing holes and locking bolts are installed in the fixing holes.

[0008] In a preferred embodiment of the present invention, a sealing ring is provided inside the fixing groove, and the sealing ring is interlocked with the fixing groove and wrapped around the surface of the limiting block.

[0009] In a preferred embodiment of this utility model, washers are provided on both sides of the bearing ring, and the washers match the arc formed by the movable arm and the fixed arm.

[0010] In a preferred embodiment of this utility model, the surface of the washer is provided with several sets of equally spaced strip grooves.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] This invention features a movable arm at the upper part of a fixed arm, with both the fixed and movable arms having a semi-circular internal structure. A connecting groove is located at one end of the fixed arm, and a connecting block is located at the connection point between the movable and fixed arms. The connecting block and the connecting groove are interlocked. A rotating shaft is located inside the connecting groove, passing through both the groove and the connecting block. The movable arm is rotatably connected to the fixed arm via the rotating shaft. Extension blocks are located on the sides of both the fixed and movable arms, with fixing pins inside each extension block. A fixing nut is located above the fixing pin, and the fixing nut is threadedly connected to the fixing pin. Fixing grooves are located inside both the fixed and movable arms, and bearing rings are installed within these grooves. A limit ring is located on the surface of the bearing ring, inside the fixing groove. During installation, the limit ring of the bearing ring is placed into the fixing groove to prevent the bearing ring from coming out. The movable arm is rotated to clamp the bearing ring with the fixed arm, and the fixing nut is rotated to complete the fixation. The design is simple and easy to install and operate. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the bearing ring structure of this utility model;

[0015] Figure 3 This is a cross-sectional structural diagram of the present invention.

[0016] In the diagram: 1. Fixed arm; 2. Movable arm; 3. Extension block; 4. Fixing hole; 5. Connecting block; 6. Connecting groove; 7. Rotating shaft; 8. Limiting ring; 9. Bearing ring; 10. Sealing ring; 11. Washer; 12. Strip groove; 13. Fixing pin; 14. Fixing nut; 15. Fixing groove. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-3This utility model provides a technical solution: a locking structure for fixing a molecular pump bearing.

[0019] The problems to be solved are: existing molecular pump bearings experience significant vibration during high-speed rotation, which can easily cause misalignment, and the installation of these bearings is complex.

[0020] The solution is as follows: A locking structure for fixing a molecular pump bearing includes: a fixed arm 1, a movable arm 2 at the upper part of the fixed arm 1, a connecting groove 6 at one end of the fixed arm 1, and a connecting block 5 at the connection between the movable arm 2 and the fixed arm 1, the connecting block 5 and the connecting groove 6 being interlocked, a rotating shaft 7 being provided inside the connecting groove 6 and passing through the connecting groove 6 and the connecting block 5, the movable arm 2 being rotatably connected to the fixed arm 1 via the rotating shaft 7, an extension block 3 being provided on the side of the fixed arm 1 and the movable arm 2, and a fixing pin 13 being provided inside the extension block 3, a fixing nut 14 being provided on the upper part of the fixing pin 13, and the fixing nut 14 being threadedly connected to the fixing pin 13, a fixing groove 15 being provided inside the fixed arm 1 and the movable arm 2, and a bearing ring 9 being installed inside the fixing groove 15, a limiting ring 8 being provided on the surface of the bearing ring 9 and the limiting ring 8 being located inside the fixing groove 15, the movable arm 2 being provided at the upper part of the fixed arm 1, and the interiors of the fixed arm 1 and the movable arm 2 forming a... The structure is semi-circular. A connecting groove 6 is provided at one end of the fixed arm 1, and a connecting block 5 is provided at the connection point between the movable arm 2 and the fixed arm 1. The connecting block 5 and the connecting groove 6 are interlocked. A rotating shaft 7 is provided inside the connecting groove 6, passing through both the connecting groove 6 and the connecting block 5. The movable arm 2 is rotatably connected to the fixed arm 1 via the rotating shaft 7. An extension block 3 is provided on the side of both the fixed arm 1 and the movable arm 2, and a fixing pin 13 is provided inside the extension block 3. A fixing nut 1 is provided on the upper part of the fixing pin 13. 4. The fixing nut 14 and the fixing pin 13 are threaded together. The fixing arm 1 and the movable arm 2 are both provided with fixing grooves 15 and the bearing ring 9 is installed inside the fixing groove 15. The surface of the bearing ring 9 is provided with a limit ring 8 and the limit ring 8 is located inside the fixing groove 15. During installation, the limit ring 8 of the bearing ring 9 is placed into the fixing groove 15 to prevent the bearing ring 9 from coming out. The movable arm 2 is rotated to clamp the bearing ring 9 with the fixing arm 1. The fixing nut 14 is rotated to complete the fixing. Its structure is simple and the installation and operation are convenient.

[0021] Further improvements, such as Figure 1 As shown: The interior of the fixed arm 1 and the movable arm 2 is set in a semi-arc structure. The semi-arc structure can better fit the shape of the bearing ring 9, provide a more uniform clamping force, and prevent the bearing ring 9 from shifting when rotating at high speed.

[0022] Further improvements, such as Figure 1As shown: Both sides of the extension block 3 are provided with fixing holes 4 and locking bolts are installed in the fixing holes 4. The locking bolts provide additional fixing force, further preventing the bearing ring 9 from displacing when rotating at high speed, and improving the reliability of the overall structure.

[0023] Further improvements, such as Figure 2 As shown: The fixing groove 15 is provided with a sealing ring 10 inside, and the sealing ring 10 is interlocked with the fixing groove 15 and wrapped around the surface of the limiting block. The sealing ring 10 can reduce the friction between the bearing ring 9 and the fixing groove 15 and extend the service life of the bearing ring 9.

[0024] Further improvements, such as Figure 2 As shown: Washers 11 are provided on both sides of the bearing ring 9, and the washers 11 match the arc formed by the movable arm 2 and the fixed arm 1. The design of the washers 11 can buffer the vibration generated by the bearing ring 9 when it rotates at high speed, and reduce the impact on the fixed arm 1 and the movable arm 2.

[0025] Further improvements, such as Figure 2 As shown: The surface of the washer 11 is provided with several sets of equally spaced strip grooves 12. The design of the strip grooves 12 can increase the elasticity of the washer 11, enabling it to better absorb vibration and impact, further reducing the vibration of the bearing ring 9. The strip grooves 12 can also improve the heat dissipation performance of the washer 11, avoiding the accumulation of heat generated by high-speed rotation.

[0026] Working principle: This utility model has a movable arm 2 on the upper part of the fixed arm 1, and the interior of the fixed arm 1 and the movable arm 2 are arranged in a semi-arc shape. A connecting groove 6 is provided at one end of the fixed arm 1, and a connecting block 5 is provided at the connection between the movable arm 2 and the fixed arm 1. The connecting block 5 and the connecting groove 6 are interlocked. A rotating shaft 7 is provided inside the connecting groove 6 and passes through the connecting groove 6 and the connecting block 5. The movable arm 2 is rotatably connected to the fixed arm 1 through the rotating shaft 7. An extension block 3 is provided on the side of the fixed arm 1 and the movable arm 2, and a fixing pin 1 is provided inside the extension block 3. 3. A fixing nut 14 is provided on the upper part of the fixing pin 13 and the fixing nut 14 is threadedly connected to the fixing pin 13. A fixing groove 15 is provided inside both the fixing arm 1 and the movable arm 2, and a bearing ring 9 is installed inside the fixing groove 15. A limit ring 8 is provided on the surface of the bearing ring 9 and the limit ring 8 is located inside the fixing groove 15. During installation, the limit ring 8 of the bearing ring 9 is placed into the fixing groove 15 to prevent the bearing ring 9 from coming out. The movable arm 2 is rotated to clamp the bearing ring 9 with the fixing arm 1, and the fixing nut 14 is rotated to complete the fixation. Its structure is simple and the installation and operation are convenient.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0028] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can refer to mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc., are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0029] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A locking structure for fixing a molecular pump bearing, characterized in that: include: A fixed arm (1) is provided with a movable arm (2) on its upper part. A connecting groove (6) is provided at one end of the fixed arm (1), and a connecting block (5) is provided at the connection between the movable arm (2) and the fixed arm (1). The connecting block (5) and the connecting groove (6) are fitted together. A rotating shaft (7) is provided inside the connecting groove (6), and the rotating shaft (7) passes through the connecting groove (6) and the connecting block (5). The movable arm (2) is rotatably connected to the fixed arm (1) through the rotating shaft (7). The fixed arm (1) and the movable arm (2) are provided with an extension block (3) and a fixing pin (13) is provided inside the extension block (3). A fixing nut (14) is provided on the upper part of the fixing pin (13) and the fixing nut (14) is threadedly connected to the fixing pin (13). The fixed arm (1) and the movable arm (2) are both provided with a fixing groove (15) and a bearing ring (9) is installed inside the fixing groove (15). A limit ring (8) is provided on the surface of the bearing ring (9) and the limit ring (8) is located inside the fixing groove (15).

2. The locking structure for fixing a molecular pump bearing according to claim 1, characterized in that: The fixed arm (1) and the movable arm (2) are arranged in a semi-circular structure.

3. The locking structure for fixing a molecular pump bearing according to claim 1, characterized in that: The extension block (3) has fixing holes (4) on both sides and locking bolts are installed in the fixing holes (4).

4. The locking structure for fixing a molecular pump bearing according to claim 1, characterized in that: The fixing groove (15) is provided with a sealing ring (10) inside, and the sealing ring (10) and the fixing groove (15) are interlocked and wrapped around the surface of the limiting block.

5. The locking structure for fixing a molecular pump bearing according to claim 1, characterized in that: Washers (11) are provided on both sides of the bearing ring (9), and the washers (11) match the arc formed by the movable arm (2) and the fixed arm (1).

6. The locking structure for fixing a molecular pump bearing according to claim 5, characterized in that: The surface of the washer (11) is provided with several sets of equally spaced strip grooves (12).

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