Flattening cutting machine
By designing a lubrication system for components such as sliders, sleeves, pistons, pressure sleeves, and oil felts in the flattening and cutting machine, quantitative lubrication is achieved, solving the problem of insufficient lubrication in existing technologies and improving the service life and working efficiency of the equipment.
Patent Information
- Application Number
- CN202520245484.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-17
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-02-17
AI Technical Summary
Existing flattening and cutting machines cannot effectively perform quantitative lubrication under high load and harsh working conditions, resulting in increased friction, accelerated wear, shortened component life and increased maintenance costs.
The lubrication system, composed of components such as sliders, sliding sleeves, pistons, pressure sleeves, and oil felts, controls the release and delivery of lubricating oil through the squeezing action of the piston, and combines the potential energy storage and release of the spring to ensure the quantitative supply and uniform distribution of lubricating oil.
It reduces friction, extends equipment lifespan, improves work efficiency, lowers material costs, and ensures effective use of lubricating oil.
Smart Images
Figure CN223733680U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to metal processing technical field especially relates to a flatten cutting machine. BACKGROUND
[0002] The flatten cutting machine is a kind of equipment for flattening and cutting processing of material. It is usually applied to the processing field of metal, plastic and other materials, can make raw material be extruded or hammered by specific working parts to flatten, then according to the set size and requirement, accurate cutting is carried out, and the required flat finished product or semi-finished product is obtained, is widely used in hardware manufacturing, electronic component production and other industries, has the characteristics such as high processing precision, fast production efficiency.
[0003] The flatten cutting machine is usually composed of power system, transmission system, flattening device, cutting device and control system. The power system provides power, which is transmitted to the flattening device through the transmission system, so that the material is extruded and flattened, and then the flattened material is cut according to the set size by the cutting device. The control system accurately controls the whole process to ensure the accuracy and efficiency of flattening and cutting, so as to produce the flat product meeting the requirements.
[0004] In the prior art, some flatten cutting machines still use general self-lubricating mode for lubrication to reduce friction, which cannot effectively quantitatively lubricate the flatten cutting machine, and the carrying capacity and wear resistance are usually limited, which may not meet the lubrication requirements under high load and harsh working conditions, and at the same time, it cannot ensure that each lubrication point can obtain appropriate amount of lubricating oil, which is easy to cause insufficient lubrication of some parts, increase friction, aggravate the wear of parts, shorten the service life of parts, increase equipment maintenance cost and replacement frequency. Therefore, a flatten cutting machine is proposed to solve the above problems. UTILITY MODEL CONTENTS
[0005] In order to make up for the above shortcomings, the utility model provides a flatten cutting machine, which aims at improving the problem that the flatten cutting machine cannot be effectively quantitatively lubricated in the prior art.
[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:
[0007] A flatten cutting machine, comprising a panel, the outer portion of the panel is fixedly connected with a slide column, the outer portion of the slide column is slidably connected with a sliding block, the inner wall of the sliding block is fixedly connected with a sliding sleeve, the inner wall of the sliding sleeve is slidably connected with a piston, the outer portion of the piston is fixedly connected with a pressing sleeve, the outer portion of the piston is fixedly connected with a spring, the outer portion of the sliding sleeve is fixedly connected with a fixed sleeve, the inner wall of the fixed sleeve is movably connected with an oil felt, the outer portion of the oil felt is fixedly connected with a fixed rope, the outer portion of the slide column is fixedly connected with a protruding block, and the outer portion of the fixed rope is fixedly connected with a fixed assembly for fixing subsequent parts.
[0008] As a further description of the above technical solutions:
[0009] The fixed assembly comprises a connecting rope, the outer part of the connecting rope is fixedly connected to the outer part of the fixed rope, the outer part of the connecting rope is fixedly connected with a sealing ring, the inner wall of the sliding block is provided with an oil delivery groove, the inner wall of the oil delivery groove is fixedly connected with an output pipe, the end of the output pipe away from the oil delivery groove is fixedly connected with an oil tank, and the outer part of the oil tank is fixedly connected with a fixing frame.
[0010] As a further description of the above technical solutions:
[0011] The outer part of the panel is fixedly connected with a hydraulic cylinder, and the outer part of the panel is fixedly connected with a movable bolt.
[0012] As a further description of the above technical solutions:
[0013] The end of the piston away from the spring is in contact with the outer part of the protruding block, and the inner wall of the pressing sleeve is movably connected to the outer part of the linoleum.
[0014] As a further description of the above technical solutions:
[0015] The end of the spring away from the piston is fixedly connected to the inner wall of the sliding sleeve, and the outer part of the pressing sleeve is slidably connected to the outer part of the sliding sleeve.
[0016] As a further description of the above technical solutions:
[0017] The outer part of the linoleum is in contact with the outer part of the sliding sleeve, and the outer part of the fixed sleeve is in contact with the inner wall of the sliding block.
[0018] As a further description of the above technical solutions:
[0019] The outer part of the piston is in contact with the outer part of the sliding column, and the outer part of the pressing sleeve is in contact with the inner wall of the sliding block.
[0020] As a further description of the above technical solutions:
[0021] The outer part of the connecting rope is in contact with the inner wall of the oil delivery groove, and the outer part of the sealing ring is fixedly connected to the inner wall of the oil delivery groove.
[0022] The utility model has the advantages of the following beneficial effects:
[0023] 1. In the utility model, the sliding block on the surface of the fixed slide column above the panel slides, when the piston connected with the sliding sleeve touches the protruding block, the piston extrudes the spring and drives the pressing sleeve to extrude the linoleum, the linoleum adsorbing lubricating oil is extruded to release lubricating oil to the contact surface of the slide column and the sliding block, so that the sliding block reduces friction on the surface of the slide column, making the work more smooth and reducing wear, wherein the spring is compressed when extruded and stores potential energy, so the pressing sleeve has enough space to extrude the linoleum; when the piston leaves the protruding block, the spring releases potential energy to make the piston drive the pressing sleeve to no longer extrude the linoleum and then reset, the groove of the fixed sleeve limits and fixes the linoleum between them, so that the pressing sleeve extrudes the linoleum more stably; wherein the fixed rope is connected to convey lubricating oil to avoid waste of too much lubricating oil, improve work efficiency and reduce material use cost.
[0024] 2. In the utility model, under the cooperation of the hydraulic cylinder and the movable bolt, the sliding block moves, wherein the oil tank is transported to the inside of the oil conveying groove through the connected output pipe, at this time the lubricating oil contacts the connecting rope, the fixed rope is transported through the connecting rope, and a sealing ring is sealed, ensuring the strictness of transportation and avoiding oil leakage during use, ensuring the smooth progress of work and prolonging the service life of the equipment. BRIEF DESCRIPTION OF DRAWINGS
[0025] Figure 1 A three-dimensional schematic view of the flat cutting machine is proposed for the utility model;
[0026] Figure 2 A structure schematic view of the sliding block of the flat cutting machine is proposed for the utility model;
[0027] Figure 3 For Figure 1 An enlarged view of A in the middle;
[0028] Figure 4 A structure schematic view of the pressing sleeve of the flat cutting machine is proposed for the utility model.
[0029] LEGEND:
[0030] 1, panel; 2, slide column; 3, sliding block; 4, sliding sleeve; 5, piston; 6, pressing sleeve; 7, spring; 8, fixed sleeve; 9, linoleum; 10, fixed rope; 11, protruding block; 12, connecting rope; 13, sealing ring; 14, oil conveying groove; 15, output pipe; 16, oil tank; 17, fixed frame; 18, hydraulic cylinder; 19, movable bolt. DETAILED DESCRIPTION
[0031] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described, obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.
[0032] With reference to Figures 1 to 3 The present application provides an embodiment: a flattening and cutting machine, comprising a panel 1, the panel 1 is the basic bearing part of the whole device, providing a stable installation foundation for many other components, ensuring that each component maintains a relatively stable positional relationship during work, and the outer part is fixedly connected with a slide column 2. The slide column 2 is fixed vertically on the panel 1, providing a precise guide rail for the sliding of the sliding block 3, so that the sliding block 3 moves smoothly and smoothly along its axial direction, ensuring the accuracy of subsequent related actions. The outer part of the panel 1 is fixedly connected with the slide column 2, and the outer part of the slide column 2 is slidably connected with the sliding block 3. The sliding block 3 can slide flexibly on the slide column 2, and this sliding action adjusts the position according to the actual needs of the flattening and cutting work, and then drives other components connected thereto to move cooperatively to adapt to the flattening and cutting operation of different specifications of materials, and the inner wall of the sliding block 3 is fixedly connected with a sliding sleeve 4;
[0033] The sliding sleeve 4 is installed in the inner wall of the sliding block 3, which plays a connecting and supporting role, and can stably bear the subsequent components and provide a suitable space environment for the relative sliding of these components, ensuring the smoothness and stability of its movement. The inner wall of the sliding block 3 is fixedly connected with the sliding sleeve 4, and the inner wall of the sliding sleeve 4 is slidably connected with a piston 5. The piston 5 slides in the sliding sleeve 4 and can move accurately along the inner wall of the sliding sleeve 4 when subjected to an external force. This sliding mode accurately transmits power or triggers corresponding mechanical actions, which plays a key role in the operation logic of the whole device. The outer part of the piston 5 is fixedly connected with a pressing sleeve 6. The pressing sleeve 6 moves with the piston 5, and its main function is to convert the movement of the piston 5 into a pressing action on other components, thereby realizing specific functions, such as the pressing operation of the linoleum 9.
[0034] With reference to Figure 4The outer part of the piston 5 is fixedly connected with a pressing sleeve 6, and the outer part of the piston 5 is fixedly connected with a spring 7. The spring 7 has good elastic deformation capacity, when the piston 5 is pushed by external force, the spring 7 will be compressed accordingly, in this process, the spring 7 will convert the external force into its own elastic potential energy for storage, providing power source for subsequent reset action, at the same time, it can also play a buffering effect, avoiding damage between components due to rigid collision, the outer part of the sliding sleeve 4 is fixedly connected with a fixed sleeve 8. The fixed sleeve 8 is firmly installed outside the sliding sleeve 4, which can limit and protect the internal components, prevent abnormal conditions such as position deviation of components during movement, and ensure the reliability of the whole equipment.
[0035] The outer part of the sliding sleeve 4 is fixedly connected with a fixed sleeve 8, and the inner wall of the fixed sleeve 8 is movably connected with an oil felt 9. The oil felt 9 is placed in the inner wall of the fixed sleeve 8, which can be fixed in the corresponding position, and can release the stored lubricating oil by using its adsorption characteristics when being extruded by external force. Moreover, its movable connection mode facilitates appropriate position adjustment during equipment operation, ensuring that the lubricating oil can flow accurately to the parts that need to be lubricated. The outer part of the oil felt 9 is fixedly connected with a fixed rope 10. The fixed rope 10 is connected with the oil felt 9, which serves as a medium for lubricating oil transmission, transporting the lubricating oil at the oil felt 9 along the predetermined path, avoiding the waste caused by random flowing of lubricating oil or affecting the normal operation of the equipment.
[0036] Referring to Figures 3 to 4 The outer part of the oil felt 9 is fixedly connected with a fixed rope 10, and the outer part of the slide column 2 is fixedly connected with a protrusion 11. The protrusion 11 is fixed on the slide column 2, which is a key trigger structure. When the piston 5 moves to the position in contact with the protrusion 11 along with the sliding of the slide block 3, a series of lubrication-related chain actions will be triggered, thereby ensuring that the key parts of the equipment can be lubricated in time, and the normal operation of the equipment is ensured. The outer part of the fixed rope 10 is fixedly connected with a fixed component for fixing the subsequent components. The fixed component, by being connected with the fixed rope 10, can further stabilize the related structures of the equipment, making the whole lubricating oil transmission and the connection of related components more stable and reliable, preventing loosening and other adverse conditions during equipment operation.
[0037] The fixed assembly comprises a connecting rope 12 as a part of the fixed assembly, which can conduct the lubricating oil during the conveying process, further transmit the lubricating oil from the felt 9 to other parts needing lubrication through the fixed rope 10, ensure the reasonable distribution of the lubricating oil in the equipment, and the outer part of the connecting rope 12 is fixedly connected to the outer part of the fixed rope 10. The outer part of the connecting rope 12 is fixedly connected with a sealing ring 13. The sealing ring 13 is tightly sleeved on the outer part of the connecting rope 12 and fixed in the corresponding position, and its main function is to prevent the lubricating oil from leaking out of the connecting part during the transmission process. Through the good sealing performance, the sealing performance of the lubricating oil conveying line is ensured, and the effective use of the equipment running environment and the lubricating oil is ensured.
[0038] The outer part of the connecting rope 12 is fixedly connected with a sealing ring 13, and the inner wall of the sliding block 3 is provided with an oil conveying groove 14. The oil conveying groove 14 is a channel designed in the inner wall of the sliding block 3, which provides a special path for the flow of lubricating oil, so that the lubricating oil can flow to each part of the equipment needing lubrication in a predetermined direction in an orderly manner, and the overall lubrication effect of the equipment is ensured. The inner wall of the oil conveying groove 14 is fixedly connected with an output pipe 15. One end of the output pipe 15 is connected with the oil conveying groove 14, and the other end is connected with an oil tank 16, which can stably convey the lubricating oil in the oil tank 16 to the oil conveying groove 14, and ensure the smooth conveying of the lubricating oil from the storage container to the lubricating part inside the equipment.
[0039] Referring to Figure 1 and Figure 3 , the inner wall of the oil conveying groove 14 is fixedly connected with the output pipe 15, and the end of the output pipe 15 away from the oil conveying groove 14 is fixedly connected with the oil tank 16. The oil tank 16 is a storage container for the lubricating oil of the entire equipment, which has enough capacity to store a certain amount of lubricating oil to meet the lubrication demand of the equipment during a long time working process. At the same time, it can realize the on-demand supply of lubricating oil through the cooperation of the output pipe 15 and other components, ensure the continuous and stable operation of the equipment, and the outer part of the oil tank 16 is fixedly connected with a fixed frame 17. The fixed frame 17 firmly fixes the oil tank 16 on the panel 1, prevents the oil tank 16 from shaking, shifting and other situations due to the vibration of the equipment or other external factors, and ensures the stability of the oil tank 16 during the operation of the entire equipment, and ensures the stability of the lubricating oil conveying.
[0040] The outer part of the panel 1 is fixedly connected with a hydraulic cylinder 18, which can generate strong thrust or pulling force, drive the sliding block 3 to slide on the slide column 2 through cooperation with other components, drive the relevant components of the entire device to work together, realize the specific operation action of flattening and cutting, and is one of the key power sources of the entire device. The outer part of the panel 1 is fixedly connected with a movable bolt 19. The movable bolt 19 plays the role of connection and movable joint, and can make some components of the device relatively flexible in a certain range. The movable bolt 19 cooperates with the movement of the hydraulic cylinder 18 and other components to make the device more flexible and variable when performing the flattening and cutting task, and adapt to different working scenes and requirements.
[0041] With reference to Figures 3 to 4 When the one end of the piston 5 away from the spring 7 touches the convex block 11, it is like pressing a "start button", the piston 5 will immediately apply pressure to the spring 7, start to compress the spring 7 and store potential energy, at the same time drive the pressing sleeve 6 to extrude the linoleum 9, and make the linoleum 9 adsorbed with lubricating oil release lubricating oil. The lubricating oil will flow along the corresponding path to the contact surface of the slide column 2 and the sliding block 3, play a good lubricating effect, greatly reduce the friction when the sliding block 3 slides on the surface of the slide column 2, and then make the entire device work more smoothly, reduce the wear between components due to friction, prolong the service life of the device, and the inner wall of the pressing sleeve 6 is movably connected to the outer part of the linoleum 9. This kind of movable connection makes the pressing sleeve 6 closely fit on the outer part of the linoleum 9, and under the drive of the piston 5, can uniformly and stably extrude the linoleum 9, ensure that the lubricating oil in the linoleum 9 can be fully and orderly released, and guarantee the consistency and reliability of the lubricating effect.
[0042] The one end of the spring 7 away from the piston 5 is fixedly connected to the inner wall of the sliding sleeve 4. When the piston 5 is extruded in the direction of the spring 7 by external force, the spring 7 will be compressed in the space defined by the inner wall of the sliding sleeve 4, and its elastic potential energy will continuously accumulate with the increase of the compression degree. Due to the fixed connection of the spring 7 to the inner wall of the sliding sleeve 4, the position deviation of the spring 7 in the compression and reset process is avoided, and stable support is provided for the subsequent reset action. The outer part of the pressing sleeve 6 is slidably connected to the outer part of the sliding sleeve 4. Such sliding connection makes the pressing sleeve 6 follow the piston 5 to smoothly slide on the outer part of the sliding sleeve 4, while maintaining a relatively stable posture. In the extrusion of the linoleum 9 and the subsequent reset action, it can accurately follow the predetermined trajectory, guarantee the coherence and accuracy of the entire lubricating related action.
[0043] With reference to Figures 2 to 4The outer part of the oil felt 9 is in contact with the outer part of the sliding sleeve 4, which on one hand makes the oil felt 9 better positioned by the outer structure of the sliding sleeve 4, so that it will not easily change its position during the operation of the equipment, and on the other hand facilitates the smooth flow of the lubricating oil along the outer part of the sliding sleeve 4 after being released from the oil felt 9 to the parts that need to be lubricated, ensuring the effective delivery and use of the lubricating oil. The outer part of the fixing sleeve 8 is in contact with the inner wall of the sliding block 3. Through this contact, the fixing sleeve 8 can be stably installed in the inner wall of the sliding block 3, so that the components such as the oil felt 9 in its interior work in a relatively stable environment, and at the same time, the overall structure is enhanced, preventing the normal operation of the equipment from being affected by problems such as loose components.
[0044] The outer part of the piston 5 is in contact with the outer part of the sliding column 2. This contact between the piston 5 and the sliding column 2 enables the piston 5 to move axially along the outer part of the sliding column 2 precisely during the sliding process of the sliding block 3, playing a good guiding role and ensuring that the movement trajectory of the piston 5 meets the working requirements of the equipment, guaranteeing the accuracy of subsequent related actions. The outer part of the pressing sleeve 6 is in contact with the inner wall of the sliding block 3. This contact between the pressing sleeve 6 and the inner wall of the sliding block 3 enables the pressing sleeve 6 to stably perform the operation of pressing the oil felt 9 and other components inside the sliding block 3, and to maintain its position and posture stable during the movement process by relying on the support of the inner wall of the sliding block 3, thereby ensuring the smooth progress of the entire lubrication and related mechanical actions.
[0045] The outer part of the connecting rope 12 is in contact with the inner wall of the oil conveying groove 14, which enables the lubricating oil to flow smoothly from the connecting rope 12 into the oil conveying groove 14, and then flow along the specified path of the oil conveying groove 14 to the parts of the equipment that need to be lubricated, ensuring the continuity and accuracy of the lubricating oil delivery process. The outer part of the sealing ring 13 is fixedly connected to the inner wall of the oil conveying groove 14. The sealing ring 13 tightly fits on the inner wall of the oil conveying groove 14, and through its excellent sealing performance, strictly limits the lubricating oil within the oil conveying groove 14 and the conveying line connected thereto, avoiding the leakage of lubricating oil to other parts of the equipment, preventing problems such as equipment contamination and component damage caused by lubricating oil leakage, thereby ensuring the smooth operation of the equipment and prolonging the service life of the equipment.
[0046] Working principle: through the slide column 2 fixed on the panel 1, the slider 3 on the surface of the slide column 2 slides, so that the piston 5 connected with the slide sleeve 4 touches the protrusion 11, the piston 5 extrudes the spring 7 at the same time, and the pressure sleeve 6 extrudes the oil felt 9, the oil felt 9 adsorbed with lubricating oil is extruded to release lubricating oil to the contact surface of the slide column 2 and the slider 3, so that the slider 3 on the surface of the slide column 2 reduces the friction force, so that the work is more smooth and the wear is reduced, wherein the spring 7 is extruded to compress the space and store potential energy, so that the pressure sleeve 6 can have enough space to extrude the oil felt 9; when the piston 5 leaves the protrusion 11, the spring 7 releases the potential energy to make the piston 5 drive the pressure sleeve 6 not to extrude the oil felt 9 and then reset, between which the recess of the fixed sleeve 8 limits and fixes the oil felt 9, so that the pressure sleeve 6 extrudes the oil felt 9 more stably; wherein the oil felt 9 is connected by the fixed rope 10 to convey lubricating oil to avoid waste of lubricating oil, improve the work efficiency and reduce the material use cost.
[0047] Under the cooperation of the hydraulic cylinder 18 and the movable bolt 19, the slider 3 moves, wherein the oil tank 16 is transported into the oil delivery groove 14 through the output pipe 15 connected to the oil delivery groove 14, at this time the lubricating oil contacts the connecting rope 12, the fixed rope 10 is transported through the connecting rope 12, and the sealing ring 13 is sealed, which ensures the strictness of the transportation and avoids the leakage during use, ensures the smooth work and prolongs the service life of the equipment.
[0048] Finally, it should be pointed out that: the above only for the preferred embodiments of the utility model, and not for limiting the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can modify the technical scheme recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model, should be included in the protection scope of the utility model.
Claims
1. A flat cutting machine comprising a faceplate (1), characterized in that: The outer part of the panel (1) is fixedly connected with a slide column (2), the outer part of the slide column (2) is slidably connected with a sliding block (3), the inner wall of the sliding block (3) is fixedly connected with a sliding sleeve (4), the inner wall of the sliding sleeve (4) is slidably connected with a piston (5), the outer part of the piston (5) is fixedly connected with a pressing sleeve (6), the outer part of the piston (5) is fixedly connected with a spring (7), the outer part of the sliding sleeve (4) is fixedly connected with a fixed sleeve (8), the inner wall of the fixed sleeve (8) is movably connected with an oil felt (9), the outer part of the oil felt (9) is fixedly connected with a fixed rope (10), the outer part of the slide column (2) is fixedly connected with a protruding block (11), and the outer part of the fixed rope (10) is fixedly connected with a fixed assembly for fixing subsequent components.
2. A flatting cutting machine according to claim 1, characterized in that: The fixed assembly comprises a connecting rope (12), the outer part of the connecting rope (12) is fixedly connected to the outer part of the fixed rope (10), the outer part of the connecting rope (12) is fixedly connected with a sealing ring (13), the inner wall of the sliding block (3) is provided with an oil conveying groove (14), the inner wall of the oil conveying groove (14) is fixedly connected with an output pipe (15), the end, away from the oil conveying groove (14), of the output pipe (15) is fixedly connected with an oil tank (16), and the outer part of the oil tank (16) is fixedly connected with a fixed frame (17).
3. A flat cutting machine according to claim 1, characterized in that: The outer part of the panel (1) is fixedly connected with a hydraulic cylinder (18), and the outer part of the panel (1) is fixedly connected with a movable bolt (19).
4. A flat cutting machine according to claim 1, characterized in that: The end, away from the spring (7), of the piston (5) is in contact with the outer part of the protruding block (11), and the inner wall of the pressing sleeve (6) is movably connected to the outer part of the oil felt (9).
5. A flat cutting machine according to claim 1, characterized in that: The end, away from the piston (5), of the spring (7) is fixedly connected to the inner wall of the sliding sleeve (4), and the outer part of the pressing sleeve (6) is slidably connected to the outer part of the sliding sleeve (4).
6. A flat cutting machine according to claim 1, characterized in that: The outer part of the oil felt (9) is in contact with the outer part of the sliding sleeve (4), and the outer part of the fixed sleeve (8) is in contact with the inner wall of the sliding block (3).
7. A flat cutting machine according to claim 1, characterized in that: The outer part of the piston (5) is in contact with the outer part of the slide column (2), and the outer part of the pressing sleeve (6) is in contact with the inner wall of the sliding block (3).
8. A flat cutting machine according to claim 2, characterized in that: The outer part of the connecting rope (12) is in contact with the inner wall of the oil conveying groove (14), and the outer part of the sealing ring (13) is fixedly connected to the inner wall of the oil conveying groove (14).