Detachable ring oil seal framework

Abstract

The utility model relates to the technical field of oil seal frameworks, and discloses a detachable ring oil seal framework which comprises a framework assembly and a positioning ring fixedly connected to the lower end of the framework assembly, positioning blocks are fixedly connected to the lower ends of the front side, the rear side, the left side and the right side of the inner side surface of the positioning ring, and positioning bolts are movably connected to the upper surfaces of the positioning blocks in a penetrating mode. A ratchet wheel fixedly sleeves the outer part of the positioning bolt and is positioned above the positioning block; a locking mechanism is arranged on the upper surface of the positioning block and is positioned in front of the positioning bolt; the ratchet wheel and the pawl are meshed and matched, so that the problem of looseness of the positioning bolt caused by vibration or reverse rotation of external force is effectively avoided, and the fixing stability is improved; a spring in the locking mechanism drives a pawl to automatically reset to be attached to a ratchet wheel, operation is simplified, and the one-way locking reliability is ensured. The limiting piece further locks the position of the pawl through the structural design that the sliding block is elastically embedded into the pawl, accidental deviation or separation of the pawl is prevented, and the anti-vibration performance is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of oil seal skeleton technology, specifically a detachable ring oil seal skeleton. Background Technology

[0002] As an important sealing element in industrial equipment, the performance of oil seals directly affects the stability and service life of the equipment. The existing oil seal skeletons do not have structures such as positioning rings, which makes the oil seal skeletons prone to loosening during use, thereby reducing the sealing performance and shortening their normal service life.

[0003] Chinese patent discloses an oil seal skeleton with a positioning ring (authorization announcement number CN209990913U). This patented technology sets a positioning ring on the main body of the oil seal skeleton, uses a locking block on the positioning ring to engage with the positioning groove on the oil seal base, and uses bolts to pass through the positioning ring and the positioning block and screw them into the oil seal base, thereby making the installation of the positioning ring more stable. The structure is simple and easy to operate. The high-strength sealing performance of the polytetrafluoroethylene sealing ring makes the positioning ring fit more tightly with the inside of the groove of the oil seal base, resulting in a good sealing effect and avoiding leakage problems.

[0004] However, it has certain drawbacks: the positioning block is fixed by bolts and threaded connection with the oil seal base. However, during long-term operation, such structures are prone to reverse rotation of bolts due to factors such as mechanical vibration, external impact or temperature changes, which can lead to loosening. Loose bolts will not only weaken the connection stability between the positioning ring and the oil seal base, but also increase the gap at the sealing interface, resulting in a decrease in sealing performance or even the risk of leakage. Utility Model Content

[0005] The purpose of this invention is to provide a detachable annular oil seal skeleton to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A detachable ring oil seal skeleton includes a skeleton assembly and a positioning ring fixed to the lower end of the skeleton assembly. Positioning blocks are fixed to the lower ends of the four sides of the inner surface of the positioning ring, and a positioning bolt is movably connected to the upper surface of the positioning block.

[0008] A ratchet is fixedly sleeved on the outside of the positioning bolt above the positioning block. A locking mechanism is provided on the upper surface of the positioning block in front of the positioning bolt. The locking mechanism includes a spring, a fixed block is fixedly connected to the front end of the spring, and a pawl is fixedly connected to the rear end of the spring. A fixed rod is movably connected to the right end of the pawl, and a limit member is provided on the left end of the upper surface of the pawl.

[0009] As a further embodiment of this utility model: the frame assembly includes a frame body, a diaphragm is fixedly sleeved on the inner side of the frame body, and a clamping spring is embedded and fixed on the outer surface of the diaphragm.

[0010] As a further embodiment of this utility model: the limiting member includes a rotating plate, a rotating rod is rotatably connected to the front end of the rotating plate, and a sliding groove is provided at the rear end of the lower surface of the rotating plate. A slider is slidably connected inside the sliding groove, a pull rod is fixedly connected to the upper surface of the slider, and a spring is fixedly connected to the upper surface of the slider outside the pull rod.

[0011] As a further embodiment of this utility model: the pawl is attached to the ratchet, and the lower ends of the fixing block and the fixing rod are both fixed to the upper surface of the positioning block.

[0012] As a further improvement of this utility model, the lower end of the main skeleton is fixed to the upper end of the positioning ring.

[0013] As a further embodiment of this utility model: the lower end of the rotating rod is fixed to the upper surface of the positioning block, the slider is movably embedded in the upper surface of the pawl, the pull rod movably passes through the upper surface of the rotating plate, and the upper end of the second spring is fixed to the top of the slide groove.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention effectively avoids the loosening of the positioning bolt caused by vibration or reverse rotation due to external force through the meshing of the ratchet and pawl, thus improving the fixing stability. In the locking mechanism, the spring drives the pawl to automatically reset and engage with the ratchet, which simplifies operation and ensures reliable one-way locking. The limiting component, through the structural design of the slider elastically embedded in the pawl, further locks the position of the pawl, preventing it from accidentally shifting or disengaging, and enhancing vibration resistance. Combined with the radial sealing interface formed by the diaphragm and the clamping spring, while achieving stable sealing, the overall structure has multiple advantages of anti-loosening, anti-disengagement, and quick locking, significantly improving the long-term operational reliability and maintenance convenience of the oil seal skeleton under complex working conditions. Attached Figure Description

[0016] Figure 1 A schematic diagram of the structure of a detachable annular oil seal skeleton;

[0017] Figure 2 This is a cross-sectional view of the skeleton assembly in a detachable annular oil seal skeleton;

[0018] Figure 3 This is a schematic diagram of the positioning ring in a detachable ring seal skeleton;

[0019] Figure 4 for Figure 3 Enlarged view of A in the middle;

[0020] Figure 5 This is a schematic diagram of the locking mechanism in a detachable annular oil seal skeleton;

[0021] Figure 6 This is a cross-sectional view of the limiting component in a detachable annular oil seal skeleton.

[0022] In the diagram: 1. Frame assembly; 2. Frame body; 3. Diaphragm; 4. Hoop spring; 5. Positioning ring; 6. Positioning block; 7. Positioning bolt; 8. Ratchet; 9. Locking mechanism; 10. Spring one; 11. Fixing block; 12. Pawl; 13. Fixing rod; 14. Limiting component; 15. Rotating plate; 16. Rotating rod; 17. Slide groove; 18. Slider; 19. Pull rod; 20. Spring two. Detailed Implementation

[0023] Please see Figures 1-4 In this embodiment of the utility model, the detachable ring oil seal skeleton includes a skeleton assembly 1 and a positioning ring 5 fixed to the lower end of the skeleton assembly 1. The skeleton assembly 1 includes a skeleton body 2. A diaphragm 3 is fixedly sleeved on the inner side of the skeleton body 2. A clamping spring 4 is embedded and fixed on the outer surface of the diaphragm 3. The lower end of the skeleton body 2 is fixed to the upper end of the positioning ring 5. Positioning blocks 6 are fixedly connected at the lower ends of the four sides of the inner surface of the positioning ring 5. A positioning bolt 7 is movably connected through the upper surface of the positioning block 6.

[0024] The diaphragm 3 is made of rubber and is tightly fitted to the surface of the rotating shaft by the elastic force of the clamping spring 4 to form a radial sealing interface. This structure is consistent with the lip sealing principle of conventional oil seals.

[0025] The main frame 2 and the positioning ring 5 are fixed together by welding, and the outer surfaces of both are attached to the inner wall of the oil seal base;

[0026] Rotating the positioning bolt 7 clockwise connects it to the inside of the oil seal base, thereby fixing the skeleton assembly 1 and the positioning ring 5 in the oil seal base, which also facilitates disassembly and maintenance.

[0027] The distance between the upper surface of the positioning block 6 and the lower surface of the skeleton body 2 is much greater than the length of the positioning bolt 7.

[0028] exist Figure 1 , Figures 3-5 In the middle: a ratchet 8 is fixedly sleeved on the outside of the positioning bolt 7 above the positioning block 6. A locking mechanism 9 is provided on the upper surface of the positioning block 6 in front of the positioning bolt 7. The locking mechanism 9 includes a spring 10. A fixing block 11 is fixedly connected to the front end of the spring 10, and a pawl 12 is fixedly connected to the rear end of the spring 10. The pawl 12 is attached to the ratchet 8. A fixing rod 13 is movably connected to the right end of the pawl 12. The lower ends of the fixing block 11 and the fixing rod 13 are both fixedly connected to the upper surface of the positioning block 6.

[0029] Pawl 12 engages with ratchet 8, allowing locating bolt 7 and ratchet 8 to rotate clockwise normally but not counterclockwise. Pulling pawl 12 away from ratchet 8 allows locating bolt 7 and ratchet 8 to rotate counterclockwise.

[0030] The cooperation between the pawl 12 and the ratchet 8 can prevent the positioning bolt 7 from loosening due to vibration and other factors, which would cause the ring oil seal skeleton to become unstable.

[0031] exist Figures 4-6 In the middle: A limiting member 14 is provided on the left end of the upper surface of the pawl 12. The limiting member 14 includes a rotating plate 15. A rotating rod 16 is rotatably connected inside the front end of the rotating plate 15. The lower end of the rotating rod 16 is fixed to the upper surface of the positioning block 6. A sliding groove 17 is provided at the rear end of the lower surface of the rotating plate 15. A slider 18 is slidably connected inside the sliding groove 17. The slider 18 is movably embedded inside the upper surface of the pawl 12. A pull rod 19 is fixed to the upper surface of the slider 18. The pull rod 19 movably passes through the upper surface of the rotating plate 15. A spring 20 is fixed to the upper surface of the slider 18 outside the pull rod 19. The upper end of the spring 20 is fixed to the top of the sliding groove 17.

[0032] The upper surface of the pawl 12 is provided with a groove that fits into the slider 18;

[0033] The slider 18 is embedded in the pawl 12, so that the pawl 12 fits the ratchet 8 more stably;

[0034] The lower surface of the rotating plate 15 and the upper surface of the pawl 12 are on the same horizontal plane;

[0035] Pulling the lever 19 upwards causes the slider 18 to leave the pawl 12, which in turn rotates the plate 15 away from the pawl 12.

[0036] The working principle of this utility model is as follows: During installation, the pawl 12 is first pulled to compress the spring 10, and then the positioning bolt 7 is rotated clockwise to screw it into the threaded hole of the oil seal base. When the positioning bolt 7 drives the ratchet 8 to descend and align with the pawl 12, the pawl 12 is released. Under the elastic force of the spring 10, the pawl 12 re-adheres to the ratchet 8. At this time, the positioning bolt 7 is rotated clockwise until it is fully tightened. The cooperation between the ratchet 8 and the pawl 12 can prevent the positioning bolt 7 from loosening in the opposite direction. Finally, the pull rod 19 of the limiting member 14 is pulled upward to make the slider 18 retract into the slide groove 17. The rotating plate 15 is rotated to cover the pawl 12. After the pull rod 19 is released, the spring 20 pushes the slider 18 to embed into the pawl 12 to achieve locking. The skeleton assembly 1 is fixed in the oil seal base by the welded skeleton body 2 and the positioning ring 5. The diaphragm 3 forms a sealing interface with the rotating shaft under the radial pressure of the clamping spring 4 to complete the radial sealing function.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and inventive concept of the present utility model, should be included within the protection scope of the present utility model.

[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A detachable ring oil seal skeleton, including a skeleton assembly (1) and a positioning ring (5) fixed to the lower end of the skeleton assembly (1). Positioning blocks (6) are fixed to the lower ends of the four sides of the inner surface of the positioning ring (5). A positioning bolt (7) is movably connected to the upper surface of the positioning block (6). Its features are, A ratchet (8) is fixedly sleeved on the outside of the positioning bolt (7) above the positioning block (6). A locking mechanism (9) is provided on the upper surface of the positioning block (6) in front of the positioning bolt (7). The locking mechanism (9) includes a spring (10). A fixing block (11) is fixedly connected to the front end of the spring (10), and a pawl (12) is fixedly connected to the rear end of the spring (10). A fixing rod (13) is movably connected to the right end of the pawl (12), and a limit member (14) is provided on the left end of the upper surface of the pawl (12).

2. The detachable annular oil seal skeleton according to claim 1, characterized in that, The skeleton assembly (1) includes a skeleton body (2), a diaphragm (3) is fixedly sleeved on the inner side of the skeleton body (2), and a clamping spring (4) is embedded and fixed on the outer surface of the diaphragm (3).

3. The detachable annular oil seal skeleton according to claim 1, characterized in that, The limiting member (14) includes a rotating plate (15), a rotating rod (16) is rotatably connected to the front end of the rotating plate (15), and a sliding groove (17) is provided at the rear end of the lower surface of the rotating plate (15). A slider (18) is slidably connected inside the sliding groove (17). A pull rod (19) is fixedly connected to the upper surface of the slider (18), and a spring (20) is fixedly connected to the upper surface of the slider (18) outside the pull rod (19).

4. The detachable annular oil seal skeleton according to claim 1, characterized in that, The pawl (12) is attached to the ratchet (8), and the lower ends of the fixing block (11) and the fixing rod (13) are both fixed to the upper surface of the positioning block (6).

5. The detachable annular oil seal skeleton according to claim 2, characterized in that, The lower end of the main skeleton (2) is fixed to the upper end of the positioning ring (5).

6. The detachable annular oil seal skeleton according to claim 3, characterized in that, The lower end of the rotating rod (16) is fixed to the upper surface of the positioning block (6), the slider (18) is movably embedded in the upper surface of the pawl (12), the pull rod (19) movably passes through the upper surface of the rotating plate (15), and the upper end of the second spring (20) is fixed to the top of the slide groove (17).

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