Isolator assembly for preventing leakage of lubricating oil in bearing chamber

Abstract

The invention discloses an isolator assembly for preventing leakage of lubricating oil in a bearing chamber, and relates to the technical field of bearing chamber sealing, the isolator assembly comprises the bearing chamber, sealing assemblies are arranged at the two ends of an inner cavity of the bearing chamber, and the interior of the bearing chamber is sealed through the sealing assemblies; according to the isolator assembly capable of preventing the lubricating oil of the bearing chamber from leaking, when the driving part is started, the driving shaft arranged at the output end of the driving part is synchronously driven to rotate, the push plate is arranged on the outer surface of the driving shaft, and the cross section of the push plate is fan-shaped, so that when the driving shaft rotates, the push plate is matched to push the rotating block to rotate around the fixed rod; therefore, a protection block rotationally mounted on the second movable rod is separated from the movable cylinder, and the bearing can be conveniently replaced; and when the driving shaft rotates reversely, the rotating block restores the driving shaft to the initial position through the acting force of the second elastic piece, and the movable cylinder is positioned. A sealing structure easy to disassemble and reinstall is designed, and time and labor cost in the maintenance process are reduced.

Description

Technical Field

[0001] The present invention relates to the technology of bearing chamber sealing, and particularly to an isolator assembly for preventing lubricating oil leakage in a bearing chamber. Background Art

[0002] In order to reduce friction between two relatively high-speed rotating pairs of rotating parts, rolling bearings are usually used, which inevitably leads to problems of lubrication and sealing. Lubrication methods include oil lubrication, grease lubrication, and solid powder lubrication, etc. These lubricating media need to be sealed. Currently, the commonly used seal between such rotating pairs is an oil seal, but the service life of the oil seal is often not high.

[0003] In the existing motor bearing chamber, a bearing chamber gland is installed at the end of the bearing chamber through a spigot to press the bearing. There is no sealing structure between the bearing chamber gland and the bearing chamber. Between the bearing chamber gland and the moving shaft, a non-sealing structure or a sealed skeleton structure is used for sealing. The non-sealing method cannot protect against acid mist and dust at the equipment site due to accuracy reasons, resulting in corrosion of the bearing due to acid mist erosion and easy deterioration of the bearing lubricating oil, losing the lubricating effect, and greatly reducing the bearing life due to the decline of the bearing mechanical properties. The entry of on-site dust into the bearing causes the mixture of dust and grease, increasing friction, reducing bearing lubrication, causing the inner and outer rings of the bearing to be ground into uneven surfaces, accelerating bearing damage, and the method of adding a sealed skeleton between the bearing chamber gland and the shaft.

[0004] The service life of the existing sealed skeleton usually ranges from 3 months to 2 years. Especially, the sealed skeleton is not acid-resistant, and its service life cannot be guaranteed in an acid mist environment and a dust environment. Moreover, it is extremely inconvenient to disassemble the stator and rotor and the connecting flange for maintenance and replacement after the skeleton seal is damaged. Therefore, an isolator assembly for preventing lubricating oil leakage in a bearing chamber is developed. Summary of the Invention

[0005] The purpose of the present invention is to provide an isolator assembly for preventing lubricating oil leakage in a bearing chamber to solve the above-mentioned deficiencies in the prior art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: An isolator assembly for preventing lubricating oil leakage in a bearing chamber, including a bearing chamber, and sealing components are arranged at both ends of the inner cavity of the bearing chamber, and the inside of the bearing chamber is sealed through the sealing components;

[0007] Wherein, the sealing component includes a sleeve connected to the bearing chamber, an activity cylinder is arranged in the inner cavity of the sleeve, activity blocks are arranged on the outer surface of the activity cylinder, docking blocks are arranged on the inner wall of the sleeve, and one end of the docking block is in contact with the inner wall of the activity block;

[0008] Meanwhile, a connecting block is provided at the end of the sleeve. One end of the connecting block is provided with a first elastic member, and a fixing block is provided at the end of the first elastic member away from the connecting block. A rubber ring is provided on the inner wall of the fixing block, and the outer surface of the fixing block is fixedly connected to the inner wall of the bearing chamber;

[0009] A protection component is assembled at the upper end of the bearing chamber, and the sealing component is supported by the protection component.

[0010] As a further optimized solution of the present invention, the cross-section of the docking block is L-shaped.

[0011] As a further optimized solution of the present invention, the protection component includes a bottom plate connected to the bearing chamber. Positioning rods are provided on both sides of one end of the bottom plate. Meanwhile, a telescopic member is provided between the two positioning rods at one end of the bottom plate.

[0012] As a further optimized solution of the present invention, an adjusting plate is provided at the end of the telescopic member. A first movable rod is rotatably installed at the end of the adjusting plate away from the telescopic member.

[0013] As a further optimized solution of the present invention, limiting plates are symmetrically provided at one end of the bottom plate, and a support plate is provided between the two limiting plates at one end of the bottom plate.

[0014] As a further optimized solution of the present invention, a fixing rod is rotatably installed at one end of the support plate, and the end of the fixing rod passes through and extends to the other end of the limiting plate. A second elastic member is provided on the outer surface of the fixing rod. Meanwhile, one end of the second elastic member is connected to the limiting plate, and the other end is fixedly connected to the outer surface of the fixing rod.

[0015] As a further optimized solution of the present invention, a rotating block is provided at the middle position of the outer surface of the fixing rod. One end of the rotating block is rotatably connected to the first movable rod, and a second movable rod is rotatably installed at the other end of the rotating block.

[0016] As a further optimized solution of the present invention, a protection block is rotatably installed at the end of the second movable rod away from the rotating block, and both ends of the protection block are slidably connected to the outer surfaces of the two positioning rods.

[0017] As a further optimized solution of the present invention, a driving member is provided at one end of the limiting plate, and a driving shaft is provided at one end of the driving member. One end of the driving shaft passes through and extends to the end of the other limiting plate.

[0018] As a further optimized solution of the present invention, a push plate is provided at the middle position of the outer surface of the driving shaft, and the outer surface of the push plate is attached to the outer surface of the rotating block.

[0019] Compared with the prior art, for an isolator assembly for preventing lubricating oil leakage in a bearing chamber provided by the present invention, when the movable cylinder moves, the first elastic member is synchronously pushed to move. One end of the first elastic member is connected to the end of the movable cylinder, and the other end is connected to the fixed block. The outer surface of the end of the movable cylinder is slidably connected to the inner wall of the connecting block, thereby squeezing the first elastic member to move towards one end of the fixed block. Since a rubber ring is provided on the inner wall of the fixed block, the rubber ring is squeezed by the first elastic member to move towards the middle and fit with the outer surface of the bearing, so that the bearing chamber is isolated from the outside, ensuring that the lubricating oil will not leak through the gap.

[0020] When the driving member is started, the driving shaft provided at its output end is synchronously driven to rotate. Since a push plate is provided on the outer surface of the driving shaft, and the cross-section of the push plate is fan-shaped, when the driving shaft rotates, the push plate cooperates to push the rotating block to rotate around the fixed rod, so that the protective block rotatably mounted on the second movable rod is separated from the movable cylinder, facilitating the replacement of the bearing. When the driving shaft rotates in the reverse direction, the rotating block is restored to its initial position by the acting force of the second elastic member and positions the movable cylinder. A sealing structure that is easy to disassemble and reinstall is designed to reduce the time and labor costs during maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings.

[0022] Figure 1 It is the first schematic diagram of the overall structure provided by the embodiment of the present invention;

[0023] Figure 2 It is the second schematic diagram of the overall structure provided by the embodiment of the present invention;

[0024] Figure 3 It is the schematic diagram of the structure of the sealing component provided by the embodiment of the present invention;

[0025] Figure 4 It is the cross-sectional view of the inner wall structure of the sealing component provided by the embodiment of the present invention;

[0026] Figure 5 It is the first schematic diagram of the structure of the protection component provided by the embodiment of the present invention;

[0027] Figure 6 It is the second schematic diagram of the structure of the protection component provided by the embodiment of the present invention;

[0028] Figure 7The first cross-sectional view of the internal structure of the protection component provided by the embodiment of the present invention;

[0029] Figure 8 The second cross-sectional view of the internal structure of the protection component provided by the embodiment of the present invention.

[0030] Explanation of reference numerals:

[0031] 1. Bearing chamber; 2. Sealing assembly; 3. Protection component; 21. Sleeve; 22. Movable cylinder; 23. Movable block; 24. Docking block; 25. Connecting block; 26. First elastic member; 27. Fixed block; 28. Rubber ring; 31. Bottom plate; 311. Support plate; 32. Positioning rod; 33. Telescopic member; 34. Limiting plate; 341. Driving member; 342. Driving shaft; 343. Pushing plate; 35. Adjusting plate; 36. First movable rod; 37. Fixed rod; 371. Second elastic member; 38. Rotating block; 39. Second movable rod; 391. Protection block. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0033] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention; the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In addition, unless otherwise clearly defined and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0034] Embodiment: Please refer to Figures 1 - 8 , an isolator assembly for preventing leakage of lubricating oil in a bearing chamber, including a bearing chamber 1, and sealing assemblies 2 are arranged at both ends of the inner cavity of the bearing chamber 1, and the inside of the bearing chamber 1 is sealed by the sealing assemblies 2.

[0035] Among them, the sealing assembly 2 includes a sleeve 21 connected to the bearing chamber 1. An active cylinder 22 is arranged in the inner cavity of the sleeve 21. An active block 23 is arranged on the outer surface of the active cylinder 22. A docking block 24 is arranged on the inner wall of the sleeve 21, and one end of the docking block 24 is in contact with the inner wall of the active block 23.

[0036] Meanwhile, a connecting block 25 is arranged at the end of the sleeve 21. A first elastic member 26 is arranged at one end of the connecting block 25. A fixing block 27 is arranged at the end of the first elastic member 26 away from the connecting block 25. A rubber ring 28 is arranged on the inner wall of the fixing block 27. The outer surface of the fixing block 27 is fixedly connected to the inner wall of the bearing chamber 1. The cross-section of the docking block 24 is L-shaped.

[0037] In this solution, when the bearing is placed inside the bearing chamber 1 and the active cylinder 22 is synchronously pushed to move on the inner wall of the bearing chamber 1, the active block 23 arranged on the outer surface of the active cylinder 22 is clamped with the docking block 24 on the inner wall of the bearing chamber 1, isolating the active cylinder 22 from the outside. Meanwhile, sealing components such as rubber are arranged on the inner wall of the active cylinder 22, thereby isolating the inside of the bearing chamber 1 from the outside.

[0038] Meanwhile, when the active cylinder 22 moves, the first elastic member 26 is synchronously pushed to move. The first elastic member 26 is an elastic component such as a spring. One end of the first elastic member 26 is connected to the end of the active cylinder 22, and the other end is connected to the fixing block 27. The outer surface of the end of the active cylinder 22 is slidably connected to the inner wall of the connecting block 25, and then the first elastic member 26 is extruded to move towards the fixing block 27. Since the rubber ring 28 is arranged on the inner wall of the fixing block 27, the rubber ring 28 is extruded to move towards the middle through the first elastic member 26 and is in contact with the outer surface of the bearing, isolating the bearing chamber 1 from the outside.

[0039] Furthermore, a protection assembly 3 is assembled at the upper end of the bearing chamber 1, and the sealing assembly 2 is supported by the protection assembly 3.

[0040] The protection assembly 3 includes a bottom plate 31 connected to the bearing chamber 1. Positioning rods 32 are arranged on both sides at one end of the bottom plate 31. Meanwhile, a telescopic member 33 is arranged at one end of the bottom plate 31 and between the two positioning rods 32.

[0041] In this embodiment, the telescopic member 33 is composed of a circular tube and a circular rod. The outer surface of the circular rod is slidably connected to the inner wall of the circular tube. Meanwhile, the end of the circular rod is connected to the adjusting plate 35, providing a moving track for the adjusting plate 35 and limiting the adjusting plate 35 to prevent the adjusting plate 35 from deviating from the set track during movement.

[0042] Further, an adjusting plate 35 is provided at the end of the telescopic member 33, and a first movable rod 36 is rotatably installed at one end of the adjusting plate 35 away from the telescopic member 33. At one end of the bottom plate 31, limiting plates 34 are symmetrically arranged, and a support plate 311 is arranged between the two limiting plates 34 at one end of the bottom plate 31.

[0043] A fixing rod 37 is rotatably installed at one end of the support plate 311, and the end of the fixing rod 37 penetrates and extends to the other end of the limiting plate 34. A second elastic member 371 is arranged on the outer surface of the fixing rod 37. At the same time, one end of the second elastic member 371 is connected to the limiting plate 34, and the other end is fixedly connected to the outer surface of the fixing rod 37.

[0044] A rotating block 38 is arranged at the middle position of the outer surface of the fixing rod 37. One end of the rotating block 38 is rotatably connected to the first movable rod 36. At the same time, the other end of the rotating block 38 is rotatably installed with a second movable rod 39.

[0045] A protective block 391 is rotatably installed at one end of the second movable rod 39 away from the rotating block 38, and both ends of the protective block 391 are slidably connected to the outer surfaces of the two positioning rods 32.

[0046] Specifically, when the rotating block 38 rotates, it pushes the first movable rod 36 and the second movable rod 39 rotatably installed at both ends of it to move synchronously, so that the protective block 391 rotatably installed at the end of the second movable rod 39 moves towards one side of the movable cylinder 22 to limit the moved movable cylinder 22 and prevent the moved movable cylinder 22 from rebounding.

[0047] At the same time, the second elastic member 371 is an elastic component such as a torsion spring, which is used to limit the rotating block 38, so that when the protective block 391 fits against the end of the movable cylinder 22, it supports the rotating block 38 to ensure that the rotating block 38 is stably in the clamped position.

[0048] Further, a driving member 341 is arranged at one end of the limiting plate 34, and a driving shaft 342 is arranged at one end of the driving member 341. One end of the driving shaft 342 penetrates and extends to the end of the other limiting plate 34.

[0049] A push plate 343 is arranged at the middle position of the outer surface of the driving shaft 342, and the outer surface of the push plate 343 is in contact with the outer surface of the rotating block 38.

[0050] Specifically, the driving member 341 is a device with power output such as a motor, and is connected to an external control device. When the driving member 341 is started, it synchronously drives the driving shaft 342 provided at its output end to rotate. Since the outer surface of the driving shaft 342 is provided with a push plate 343, and the cross-section of the push plate 343 is fan-shaped, when the driving shaft 342 rotates, the push plate 343 cooperates to push the rotating block 38 to rotate around the fixed rod 37, so that the protective block 391 rotatably mounted on the second movable rod 39 is separated from the movable cylinder 22, which is convenient for replacing the bearing. When the driving shaft 342 rotates in the reverse direction, the rotating block 38 is restored to its initial position by the acting force of the second elastic member 371, and positions the movable cylinder 22.

[0051] The control device can select a single-chip microcomputer as the control end. In this embodiment, the single-chip microcomputer is a typical embedded microcontroller (Micro controller Unit), which is composed of an arithmetic unit, a controller, a memory, input and output devices, etc., and is equivalent to a mini computer. Compared with the general-purpose microprocessor applied in a personal computer, it emphasizes more on self-supply (without external hardware) and cost savings. Its greatest advantage is its small size, which can be placed inside the instrument, but its storage capacity is small, the input and output interfaces are simple, and the function consumption is low.

[0052] Only some exemplary embodiments of the present invention have been described above by way of illustration. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present invention.

Claims

1. An isolator assembly for preventing lubricating oil leakage in a bearing chamber, characterized in that, It includes a bearing chamber (1), and sealing assemblies (2) are arranged at both ends of the inner cavity of the bearing chamber (1), and the interior of the bearing chamber (1) is sealed through the sealing assemblies (2). Among them, the sealing assembly (2) includes a sleeve (21) connected to the bearing chamber (1). An activity cylinder (22) is arranged in the inner cavity of the sleeve (21). Activity blocks (23) are arranged on the outer surface of the activity cylinder (22). Docking blocks (24) are arranged on the inner wall of the sleeve (21), and one end of the docking block (24) fits with the inner wall of the activity block (23). Meanwhile, a connecting block (25) is arranged at the end of the sleeve (21). A first elastic member (26) is arranged at one end of the connecting block (25), and a fixing block (27) is arranged at the end of the first elastic member (26) away from the connecting block (25). A rubber ring (28) is arranged on the inner wall of the fixing block (27), and the outer surface of the fixing block (27) is fixedly connected to the inner wall of the bearing chamber (1). A protection assembly (3) is assembled at the upper end of the bearing chamber (1), and the sealing assembly (2) is supported through the protection assembly (3).

2. The isolator assembly for preventing lubricating oil leakage in a bearing chamber according to claim 1, characterized in that, The cross-section of the docking block (24) is L-shaped.

3. The isolator assembly for preventing lubricating oil leakage in the bearing chamber according to claim 1, characterized in that, The protection assembly (3) includes a bottom plate (31) connected to the bearing chamber (1). Positioning rods (32) are arranged on both sides at one end of the bottom plate (31). Meanwhile, a telescopic member (33) is arranged between the two positioning rods (32) at one end of the bottom plate (31).

4. An isolator assembly for preventing lubricating oil leakage in a bearing chamber according to claim 3, characterized in that, An adjusting plate (35) is arranged at the end of the telescopic member (33). A first movable rod (36) is rotatably installed at the end of the adjusting plate (35) away from the telescopic member (33).

5. An isolator assembly for preventing lubricating oil leakage in a bearing chamber, characterized in that, Limiting plates (34) are symmetrically arranged at one end of the bottom plate (31), and a support plate (311) is arranged between the two limiting plates (34) at one end of the bottom plate (31).

6. An isolator assembly for preventing lubricating oil leakage in a bearing chamber according to claim 5, characterized in that, A fixing rod (37) is rotatably installed at one end of the support plate (311), and the end of the fixing rod (37) penetrates and extends to the other end of the limiting plate (34). A second elastic member (371) is arranged on the outer surface of the fixing rod (37). Meanwhile, one end of the second elastic member (371) is connected to the limiting plate (34), and the other end is fixedly connected to the outer surface of the fixing rod (37).

7. An isolator assembly for preventing lubricating oil leakage in a bearing chamber according to claim 6, characterized in that, A rotating block (38) is arranged at the middle position of the outer surface of the fixing rod (37). One end of the rotating block (38) is rotatably connected to the first movable rod (36). Meanwhile, a second movable rod (39) is rotatably installed at the other end of the rotating block (38).

8. An isolator assembly for preventing lubricating oil leakage in a bearing chamber, according to claim 7, characterized in that, A protection block (391) is rotatably installed at the end of the second movable rod (39) away from the rotating block (38), and both ends of the protection block (391) are slidably connected to the outer surfaces of the two positioning rods (32).

9. The isolator assembly for preventing lubricating oil leakage in a bearing chamber according to claim 8, characterized in that, A driving member (341) is arranged at one end of the limiting plate (34), and a driving shaft (342) is arranged at one end of the driving member (341). The end of the driving shaft (342) penetrates and extends to the end of the other limiting plate (34).

10. An isolator assembly for preventing leakage of lubricating oil in a bearing chamber, characterized in that, A push plate (343) is arranged at the middle position of the outer surface of the drive shaft (342), and the outer surface of the push plate (343) is attached to the outer surface of the rotating block (38).

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