Bearing oiling equipment

Abstract

The invention relates to the technical field of bearing lubricating equipment, in particular to bearing oiling equipment, which comprises a lubricating grease container, a bearing oil injection device and a lubricating grease injection device, the fastening structure is provided with a positioning piece for limiting the radial movement of the tapered roller bearing and an observation window for observing the injection state of the lubricating grease; the piston is arranged in the inner cavity of the lubricating grease container and is in sealing fit with the inner wall to reciprocate in the axis direction; the driving structure is used for driving the piston to push lubricating grease to be injected into the bearing; the shell is used for accommodating all the structures to form an integrated structure; an air hole is formed in the bottom of the lubricating grease container to release air pressure in the cavity in the movement process; the piston, the lubricating grease container and the fastening structure define a closed cavity to contain lubricating grease and surround the bearing, and the sealing performance, stability and controllability in the grease injection process are guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of bearing lubrication equipment, and in particular to a bearing oiling equipment. Background Art

[0002] Tapered roller bearings are widely used in automobiles, construction machinery, and heavy-duty industrial equipment due to their excellent axial load-bearing capacity and guiding characteristics. To ensure long-term stable operation under high-load conditions, bearing lubrication is crucial. Existing bearing greasing methods primarily include the use of manual grease guns, grease nozzles, centralized lubrication systems, or piston-type grease injection devices. These methods are relatively mature for greasing standard ball bearings or straight roller bearings and can meet basic lubrication needs. However, the unique tapered raceway structure of tapered roller bearings places higher demands on the directionality and uniformity of grease injection. Existing grease injection devices generally lack specialized adaptation designs for this structure.

[0003] In the existing technology, the lubrication application of tapered roller bearings still has the following major technical problems: First, because the bearing raceway has a tapered path, the grease needs to be evenly filled in the axial and radial directions. The traditional greasing method is difficult to adapt to this path, which often leads to uneven lubrication of the raceway and the formation of lubrication blind spots; second, the existing greasing devices generally do not have an intuitive judgment mechanism for the completion status of greasing. Operators need to rely on experience for control, which can easily cause insufficient or excessive greasing, affecting the lubrication effect and material utilization; in addition, traditional devices are mostly general structures, lacking positioning and sealing matching mechanisms that match the bearing conical surface structure. The bearing is prone to displacement, loosening or grease leakage during the greasing process, which is not conducive to improving the consistency, controllability and cleanliness of the lubrication process.

[0004] Therefore, the bearing oiling equipment in the existing technology has technical problems such as insufficient lubrication path matching, invisible greasing status, poor structural adaptability and low standardization of lubrication operations, which makes it difficult to ensure lubrication efficiency and accuracy, reduces the working reliability of the bearing, and is not conducive to the standardization and controllability of the greasing process during assembly or maintenance. Summary of the Invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide an automated sequencing reagent device for multiplex PCR library construction, the automated sequencing reagent device for multiplex PCR library construction comprising: In one possible embodiment, a bearing oiling device is provided, comprising: a grease container, the grease container being a hollow cylindrical structure, the top of the grease container being provided with a tapered opening, the tapered opening being used to tightly fit with a tapered roller bearing to be oiled; a fastening structure, the fastening structure being detachably connected to the tapered opening, and being provided with a positioning member for limiting radial movement of the tapered roller bearing, and being provided with an observation window for observing the injection status of the grease; a piston, the piston being provided in the cavity of the grease container and being sealed with the inner wall of the grease container so as to be able to move along the axial direction of the grease container. Reciprocating motion; a driving structure for driving the piston to move back and forth along the axis of the grease container to push the grease into the bearing; a housing for accommodating the grease container, the fastening structure, the piston and the driving structure as an integrated structure; wherein, an air vent is provided at the bottom of the grease container for releasing the air pressure in the cavity during the movement of the piston to prevent the piston from being blocked due to sealing; wherein, the piston, the grease container and the fastening structure together form a closed cavity, which is used to contain the grease and surround the bearing to be oiled, so as to ensure the closure, stability and controllability of the grease injection process.

[0006] In one possible embodiment, the driving structure includes: a transmission rod, one end of which is fixedly connected to the piston, and the other end of the transmission rod extends out of the grease container; a transmission member, which is transmission-connected to the second end of the transmission rod so that the transmission rod and the transmission member move parallel to the axial direction of the transmission rod; a transmission sleeve, which is fixedly connected to the transmission rod; and a threaded rod, which is threadedly connected to the transmission sleeve and is arranged parallel to the transmission rod; wherein, when the threaded rod rotates, the transmission sleeve and the transmission rod move vertically along the axial direction, thereby driving the piston to move synchronously.

[0007] In a possible embodiment, the transmission member is a triangular structure, the first end of the transmission member is fixedly connected to the transmission sleeve, the second end of the transmission member is overlapped on the transmission rod, and the length of the first end is greater than the length of the second end.

[0008] In a possible embodiment, the driving structure further includes: a lubricating sleeve, which is sleeved on the threaded rod and fixedly arranged on the housing. The lubricating sleeve is rotatably connected to the threaded rod in the horizontal direction and limits the axial displacement of the threaded rod in the vertical direction.

[0009] In one possible embodiment, the lubricating sleeve includes: a sleeve body, the sleeve body is sleeved on the threaded rod, and the sleeve body is fixedly connected to the outer shell; a first bearing and a second bearing, the first bearing and the second bearing are respectively installed at both ends of the sleeve body, the inner ring of the first bearing and the inner ring of the second bearing are fixedly connected to the threaded rod, and the outer rings of the first bearing and the second bearing are fixedly connected to the inner wall of the sleeve body.

[0010] In a possible embodiment, a liquid level indicator is further included. The liquid level indicator is fixedly connected to the transmission sleeve, and a liquid level display window is provided on the housing. The liquid level indicator is adapted to the liquid level display window so that the state of the grease can be observed and the grease can be replenished in time.

[0011] In a possible implementation manner, a rotating handle is provided on the threaded rod.

[0012] In one possible embodiment, the fastening structure includes: a circular cover body, a retaining ring is provided at the bottom of the circular cover body, a retaining groove is provided on the outer shell, the retaining ring and the retaining groove are adapted to allow the circular cover body to be screwed into and installed on the outer shell; a positioning member, the positioning member is a cylindrical structure, the positioning member is concentrically arranged with the circular cover body, and the positioning member is adapted to the tapered roller bearing.

[0013] In a possible embodiment, a plurality of observation windows are provided, and the plurality of observation windows are all located outside the positioning member and are evenly distributed in a circumferential array.

[0014] In a possible implementation, a rubber ring is provided on the positioning member, and the rubber ring is used to cooperate with the inner ring of the tapered roller bearing to prevent grease from overflowing from the inner hole of the bearing.

[0015] Additional aspects and advantages of the present invention will be described in part in the following description and will become apparent from the following description or through practice of the present invention. Based on the above technical solution, the bearing oiling equipment of the present invention adopts a hollow cylindrical grease container with a conical opening on the top that matches the tapered roller bearing, and is equipped with a sealing and positioning fastening structure to form a grease injection interface with good consistency with the bearing structure, which can realize a composite grease injection path in the axial and radial directions, and structurally solves the problem that the traditional grease injection method is difficult to evenly fill the tapered raceway; its technical principle is to use a close-fitting structure to seal and position the bearing, and combine the piston to drive the grease to advance steadily in the axial direction, thereby promoting the grease to fully penetrate into all parts of the bearing raceway to avoid the formation of lubrication blind spots.

[0016] In addition, the equipment is equipped with a visual observation window, allowing the operator to monitor the grease injection status in real time, achieve intuitive judgment of the grease injection process, effectively prevent insufficient or excessive lubrication due to inexperienced operations, and improve the accuracy of grease injection and material utilization rate; at the same time, through the sealing cooperation between the piston and the grease container, and the provision of air holes at the bottom of the container to release air pressure, the piston movement is smooth and the pressure is stable, ensuring the continuity and controllability of the grease injection process; the closed cavity enclosed by these structures further improves the cleanliness and safety of the lubrication process.

[0017] In summary, this technical solution addresses the problems existing in the prior art, such as insufficient lubrication path matching, invisible grease injection status, poor structural adaptability, and low degree of operational standardization. By optimizing the lubrication interface structure and sealing mechanism design, and visualizing the grease injection process and the drive control system, it significantly improves the efficiency, uniformity, and standardization of bearing lubrication, and enhances the reliability of bearing operation under high-load conditions and the convenience of maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 A schematic structural diagram of a bearing oiling device provided in an embodiment of the present invention; Figure 2 for Figure 1 sectional view of Figure 3 for Figure 1 A cross-sectional view of an oblique section; Figure 4 for Figure 3 Magnified view of area A in center.

[0020] Description of reference numerals: 1. Grease container; 2. Conical opening; 3. Fastening structure; 4. Positioning part; 5. Rubber ring; 6. Piston; 7. Driving structure; 8. Housing; 9. Transmission rod; 10. Transmission part; 11. Transmission sleeve; 12. Threaded rod; 13. Lubrication sleeve; 14. Sleeve body; 15. First bearing; 16. Second bearing; 17. Liquid level indicator; 18. Rotating handle; 19. Round cover; 20. Liquid level display window; 21. Observation window. DETAILED DESCRIPTION

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0023] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0024] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0025] Figure 1 A schematic structural diagram of a bearing oiling device provided in an embodiment of the present invention; Figure 2 for Figure 1 sectional view of Figure 3 for Figure 1 A cross-sectional view of an oblique section; Figure 4 for Figure 3 Magnified view of area A in center.

[0026] See also Figures 1-4In one possible embodiment, a bearing oiling device includes: a grease container 1, which is a hollow cylindrical structure with a tapered opening 2 at the top, and the tapered opening 2 is used to tightly fit with the tapered roller bearing to be oiled; a fastening structure 3 is detachably connected to the tapered opening 2, and is provided with a positioning member 4 for limiting the radial movement of the tapered roller bearing, and is provided with an observation window 21 for observing the injection status of the grease; a piston 6 is disposed in the cavity of the grease container 1 and is sealed with the inner wall of the grease container 1 so as to be able to reciprocate along the axial direction of the grease container 1; a driving mechanism 3 is provided. The structure 7 is used to drive the piston 6 to move back and forth along the axis of the grease container 1 to push the grease into the bearing; the outer shell 8 is used to accommodate the grease container 1, the fastening structure 3, the piston 6 and the driving structure 7 as an integrated structure; wherein, the bottom of the grease container 1 is provided with an air vent, which is used to release the air pressure in the cavity during the movement of the piston 6 to prevent the operation of the piston 6 from being obstructed due to the seal; wherein, the piston 6, the grease container 1 and the fastening structure 3 together form a closed cavity, which is used to contain grease and surround the bearing to be oiled to ensure the closure, stability and controllability of the grease injection process.

[0027] The technical core of this equipment lies in the geometric matching of the conical structure at the top of the grease container 1 with the tapered roller bearing to form a precisely matched interface, and the position is locked by the fastening structure 3, so that the bearing remains stable during the grease injection process. Through this structural method, the grease can be pushed forward synchronously in both the axial and radial directions, thereby more evenly filling the entire tapered raceway, solving the problem of incomplete lubrication caused by insufficient matching of the lubrication path in the traditional method. The piston 6 is pushed by the driving structure 7 and performs a uniform reciprocating motion in the direction of the container axis, driving the grease to flow steadily into the bearing. At the same time, due to the sealing between the piston 6 and the container and the regulation of the pressure in the cavity by the air vents at the bottom of the container, the entire grease injection process remains smooth and unobstructed, the pressure is balanced, and the formation of lubrication blind spots is avoided.

[0028] During the greasing process, the operator can observe the grease's progress in real time through the observation window 21 on the fastening structure 3, intuitively judging whether the greasing is complete. This effectively prevents insufficient or excessive greasing due to erroneous judgment, improving material utilization efficiency and operational compliance. This structure and operating process together create a clean and controllable greasing environment, preventing impurities and grease leakage, and enhancing the safety and durability of the lubrication system.

[0029] The materials and structures of each component in the equipment can also be flexibly adjusted according to the specific working conditions. The grease container 1 can be made of aluminum alloy, stainless steel or high-strength plastic, and the angle of the tapered opening 2 can be customized according to the bearing model to optimize the matching effect. The fastening structure 3 can be in the form of threads, snaps, quick releases, etc. to achieve different installation methods; the drive structure 7 can be electric, hydraulic, pneumatic or manual drive according to the power conditions to adapt to different working scenarios. The air vent can be further equipped with a one-way valve or a filter structure to prevent external particles from entering. For the observation window 21, lighting components or sensors can also be configured to achieve intelligent monitoring and control, further improving the applicability and maintainability of the equipment.

[0030] See also Figure 1-Figure 3 In one possible embodiment, the drive structure 7 is located outside the grease container 1 and consists of a transmission rod 9, a transmission member 10, a transmission sleeve 11, and a threaded rod 12. The lower end of the transmission rod 9 is fixedly connected to the piston 6 within the cavity of the grease container 1. The upper end of the transmission rod 9 passes through the container cover and extends to the external space, forming a parallel guide connection with the transmission member 10. The transmission member 10 structure defines the motion trajectory of the transmission rod 9, allowing it to move smoothly and synchronously up and down along the container axis during the driving process.

[0031] A transmission sleeve 11 is installed in the middle of the transmission rod 9 and is fixedly connected to it. The outer wall of the transmission sleeve 11 is equipped with an internal thread structure, which is used to threadably engage with the threaded rod 12 arranged on its outer side. The axes of the two are parallel and aligned with each other. When the operator manually rotates the threaded rod 12, the threaded auxiliary structure converts the rotational motion into linear displacement of the transmission sleeve 11 along the axis, thereby synchronously driving the transmission rod 9 and its connected piston 6 in the vertical direction, achieving uniform propulsion of grease within the container cavity.

[0032] To enhance consistent and intuitive operation, the threaded connection between threaded rod 12 and transmission sleeve 11 is right-handed. This creates a corresponding relationship between the direction of rotation and the direction of movement: when the operator rotates threaded rod 12 clockwise, transmission sleeve 11 and transmission rod 9 move downward, driving piston 6 downward, compressing and expelling the grease; counterclockwise rotation causes piston 6 to move upward, freeing up space for venting or re-lubricating. This configuration effectively prevents operator errors and facilitates the development of standardized operating instructions.

[0033] To further enhance the device's ease of use, this embodiment also features a grease filling mechanism. A grease filling port is located on the top sidewall or housing 8 of the grease container 1. This port can be internally threaded and connect to a standard grease gun or grease cartridge, facilitating quick access during maintenance or grease replenishment. A one-way check valve is located within the port to prevent grease backflow and contamination, ensuring a clean and safe grease filling process.

[0034] All connectors, threaded components, and guide members in the above structure are manufactured using standard industrial fastening structures 3, facilitating disassembly and maintenance. Transmission components such as the threaded rod 12 and transmission sleeve 11 are constructed from wear-resistant alloys, with surface nitriding or coating treatments enhancing their fatigue resistance, ensuring a long service life even under frequent grease injection conditions.

[0035] See also Figure 2-Figure 3 In one possible embodiment, to enhance the overall stability and guiding accuracy of the drive structure 7, the transmission member 10 employs a triangular structure. One end of the transmission member 10, serving as the first end, is fixedly connected to the transmission sleeve 11, while the other end, serving as the second end, overlaps the transmission rod 9. Structurally, the first end is longer than the second end, creating an asymmetrical arrangement with one side longer than the other. This provides the transmission member 10 with a three-dimensional diagonal support during motion, effectively enhancing axial restraint during driving.

[0036] As threaded rod 12 drives transmission sleeve 11 up and down, triangular transmission element 10, connected by two pivots of different lengths, helps transmission rod 9 maintain a stable trajectory along its axis. The first end provides primary guidance and torque constraint, while the second end flexibly overlaps transmission rod 9, helping to buffer minor disturbances and prevent eccentricity or jamming during operation. This structure also enhances the stability and accuracy of drive load transfer, making it particularly suitable for lubrication and greasing operations requiring stable driving force and precise guidance.

[0037] To further reduce the overall weight of the equipment and optimize material utilization, the triangular transmission element 10 features a hollowed-out design. Several through-holes or weight-reducing slots are defined within the element based on mechanical requirements. While maintaining structural strength and rigidity, this significantly reduces component mass and mitigates the additional loads caused by inertia, helping to improve equipment responsiveness and energy efficiency. The hollowed-out areas can be arranged symmetrically, or shaped to accommodate uneven force distribution, ensuring optimal stress distribution.

[0038] The transmission element 10 can be manufactured using methods such as aluminum alloy die-casting, steel plate stamping followed by slotting, or polymer engineering plastics injection molding. Its contact surface with the transmission rod 9 is equipped with a guide groove or rolling slide structure to reduce friction and ensure consistent guidance. The overall design balances mechanical stability and lightweight requirements, making it suitable for compact oil injection equipment with limited size but demanding stable performance.

[0039] See also Figure 2-Figure 3In one possible embodiment, a lubricating sleeve 13 assembly is provided within the drive structure 7 to enhance the rotational stability and axial position retention of the threaded rod 12 during operation. The lubricating sleeve 13 is a hollow cylindrical structure, the inner cavity of which is matingly connected to the threaded rod 12. The entire structure is mounted in the middle of the device housing 8 and is securely integrated with the housing 8 via a fixed connection. The threaded rod 12 extends axially through the lubricating sleeve 13 and can rotate about its own axis. At the same time, due to the limiting effect of the lubricating sleeve 13, its axial movement is effectively suppressed, thereby ensuring unidirectional purity and high repeatability of displacement during the threaded transmission process.

[0040] A clearance fit is employed between the lubricating sleeve 13 and the threaded rod 12. The mating surfaces can be machined with high precision to maintain the clearance within a reasonable range, ensuring rotational flexibility while avoiding transmission instability caused by excessive shaking. To reduce friction and wear and improve system efficiency, one or more pairs of sliding bushings, rolling bearings, or needle roller assemblies can be embedded within the lubricating sleeve 13. This allows the threaded rod 12 to rotate smoothly even under high loads, preventing increased resistance from causing poor control or thread jamming. Furthermore, the inner wall of the lubricating sleeve 13 can be coated with a low-friction material such as polytetrafluoroethylene or graphite coating, or an annular oil reservoir can be provided to enhance lubrication retention and extend the service life of the overall structure.

[0041] In terms of the specific connection structure, the lubricating sleeve 13 is equipped with a retaining ring and a sealing structure at each end, respectively, to fix the axial boundary position of the threaded rod 12 and prevent external dust or grease from entering the rotating pair area, thereby maintaining the cleanliness of the structure. This retaining structure can also adopt a dual-bearing end cap design to achieve simultaneous radial support and axial locking of the end of the threaded rod 12. The entire lubricating sleeve 13 is rigidly connected to the housing 8 via a flange, screws, or welded structure, providing a stable, immovable fixed reference during the grease injection process, thereby improving the overall rigidity of the equipment and the consistency of the grease injection action.

[0042] The lubrication sleeve 13 can be made of aluminum alloy, stainless steel, copper alloy, or high-strength engineering plastics, depending on the equipment's operating environment and cost requirements. For lubrication equipment subject to high loads, frequent starts and stops, or extreme temperature and humidity conditions, materials with excellent corrosion and wear resistance can be selected to extend the life of the structure and ensure long-term stable operation.

[0043] This structure significantly improves the controllability of the rotation process of the threaded rod 12 and the operational stability of the structural system by adding a dual-function component of lubrication guide and axial limit between the threaded drive component and the equipment housing 8, ensuring the accurate advancement path of the piston 6 and continuous force transmission during the grease injection process. It is one of the key components to ensure the long-term and reliable operation of the drive module.

[0044] See also Figure 2-Figure 4In one possible embodiment, to significantly improve the guiding accuracy, structural stability, and smooth operation of the threaded rod 12 during rotation, the lubricating sleeve 13 is constructed as a multi-layered support structure. A first bearing 15 and a second bearing 16 are positioned within the lubricating sleeve, supported and limited by the integral sleeve body 14. The resulting structure is compact, rigid, and highly stable. This design is particularly suitable for oiling equipment that requires frequent actuation and high structural response accuracy.

[0045] The sleeve body 14 is a cylindrical structure, formed by either integral machining or modular assembly. Its outer wall is fixed to the device housing 8 via threads, bolts, or welding, ensuring that the structure does not undergo any relative displacement during use. This fixing forms the structural reference plane for the threaded rod 12's rotation system and is a core load-bearing and guiding component of the entire grease injection and advancement mechanism.

[0046] Standard bearing mounts are provided at the upper and lower ends of the sleeve body 14 for mounting a first bearing 15 and a second bearing 16. The bearing mounts are manufactured through high-precision internal bore machining, with their inner walls tightly fitting the bearing outer rings to form a gap-free support surface. The first bearing 15 is mounted at the upper end, and the second bearing 16 is mounted at the lower end. These two bearings are symmetrically arranged to form a shafting system that provides bidirectional guidance and support for the threaded rod 12. The two journal sections of the threaded rod 12 are connected to the inner rings of the first and second bearings 15, 16, respectively. These connections can be made using interference fits, axial locking nuts, C-shaped retaining rings, or conical locking rings, achieving a highly coaxial, non-slip rotary connection structure.

[0047] This bearing structure can use ordinary deep groove ball bearings for medium loads and normal speeds; depending on the application requirements, it can also adopt dust-proof bearings with sealed covers to improve environmental resistance; or thrust ball bearings to increase the ability to withstand some axial forces. For extreme operating conditions (such as high temperature, high humidity, or dusty environments), ceramic bearings or grease-filled maintenance-free bearings can also be considered to extend maintenance intervals.

[0048] To enhance the overall operating life and rotational efficiency of the lubricating sleeve 13, an oil reservoir can be installed on the inner wall of the sleeve body 14. This reservoir, coupled with the self-lubricating properties of the bearing, forms an oil film, thereby reducing friction and operating noise. A dust seal, labyrinth seal, or O-ring can also be installed outside the bearing mounting area to prevent the intrusion of foreign particles and moisture, thereby preventing contamination or loss of bearing lubricant. If quick disassembly and maintenance are required, the sleeve body 14 can be designed to be removable, facilitating bearing replacement and shafting adjustments.

[0049] This structure, through the synergistic effect of the sleeve body 14 and the dual bearings, not only ensures that the threaded rod 12 maintains a stable and efficient rotational state during the grease injection process, but also significantly reduces the risk of axial play and radial offset, effectively improving the operational accuracy and reliability of the entire grease injection drive system. Furthermore, this structure is highly versatile and scalable, adapting to a variety of industry-standard interfaces and custom shaft diameters, and possesses excellent engineering application value.

[0050] See also Figure 2 In one possible embodiment, a liquid level indicator 17 is provided within the device to facilitate real-time monitoring of the remaining grease level by the operator and timely replenishment. This liquid level indicator 17 is fixedly connected to the transmission sleeve 11 and moves synchronously with the axial motion of the transmission sleeve 11, thereby reflecting the current position of the piston 6 within the grease container 1 and indirectly indicating the remaining grease level within the container. The liquid level indicator 17 typically utilizes a slender rod-like structure made of a material with good visibility, such as a color-coded metal rod, plastic rod, or magnetic float, to enhance visibility from a distance.

[0051] A liquid level display window 20 is provided in a corresponding position on the device housing 8. This transparent window, made of high-strength polycarbonate or tempered glass, is pressure-resistant, dustproof, and scratch-resistant. The size and position of the liquid level display window 20 precisely correspond to the range of motion of the liquid level indicator 17. It is located in a conveniently located area of ​​the housing 8, ensuring that the operator can quickly determine the remaining grease level through the viewing window 21 without disassembling the device, facilitating maintenance and management.

[0052] As piston 6 moves downward along its axis, driven by threaded drive mechanism 7, grease is continuously pushed to the grease inlet. Drive sleeve 11 also moves downward, causing the attached liquid level indicator 17 to drop accordingly, resulting in a lower position displayed in the display window, indicating a decrease in the remaining grease. Conversely, during grease replenishment or the upward stroke, the liquid level indicator 17 moves upward in the display window, indicating sufficient grease. By marking the display window with sections, such as "full," "normal," "low," or "refill," different color bands or scale areas, intuitive grading of grease status can be achieved, preventing lubrication failure or waste caused by insufficient or excessive lubrication.

[0053] This liquid level monitoring system features a simple structure, prompt response, and independence from electronic sensors, making it suitable for cost-sensitive industrial environments or complex operating environments. Furthermore, the liquid level indicator 17 shares a common structural foundation with the transmission mechanism, eliminating the need for additional guide rails or drive devices. This ensures high overall system stability and low maintenance costs.

[0054] A protective cover can be added to the outside of the liquid level display window 20 to prevent dust and oil from adhering to the display, and an anti-fog and oil-resistant coating can be applied to the inside of the display window to further enhance reading clarity. If needed, a magnetic sheet can also be added to the liquid level indicator 17 for use with an external magnetic induction switch or liquid level alarm device to provide low-liquid-level warnings or automatic grease replenishment control functions, providing an interface foundation for intelligent equipment upgrades.

[0055] See also Figure 1-Figure 3 In one possible embodiment, to enhance the operator's manual control convenience and force transmission efficiency during the grease injection process, a rotary handle 18 is provided at the upper end of the threaded rod 12. This rotary handle 18, serving as a manual drive unit, is mounted on the free end of the threaded rod 12. The operator can directly apply torque to the rotary handle to rotate the threaded rod 12 about its axis, thereby driving the transmission sleeve 11 and its attached piston 6 connected to the threaded pair to achieve axial linear motion.

[0056] The structure of the rotary handle 18 can be optimized for ergonomics, typically adopting a "T"-shaped, cross-shaped, or double-winged layout, providing a good grip and anti-slip properties. Materials such as high-strength plastic, aluminum alloy, or rubber-coated metal composite structures can be used to balance mechanical strength and user comfort. The rotary handle 18 is securely attached to the threaded rod 12 through a threaded connection, pin connection, or spline press fit, ensuring no slipping or loosening under high torque conditions.

[0057] The addition of the rotating handle 18 eliminates the cumbersome operation and safety hazards associated with using other tools (such as a wrench or hook handle) to rotate the threaded rod 12, making the grease injection process more intuitive, quick, and safe. The operator can directly visually observe the number and direction of rotation of the handle, easily judging the current displacement of the piston 6 and the amount of grease injection, thereby improving the intuitiveness and accuracy of the operation control.

[0058] Furthermore, to further enhance ease of use, the rotating handle 18 can be equipped with a rotating scale ring, positioning slots, or limit pins to indicate the rotation angle and cumulative number of turns, making the amount of grease injected quantifiable and repeatable. For applications requiring operational feedback, an elastic damping device or ratchet structure can also be added to the middle of the handle to provide segmented feedback during rotation, enhancing the sense of control and precision during use.

[0059] It is worth noting that in order to achieve stable, comfortable and continuous manual actuation of the threaded rod 12, a circular knob is structurally provided at the upper end of the threaded rod 12. This knob serves as a direct interface between the operator and the threaded drive mechanism. It has a compact structure, is easy to operate with one hand or two hands, and can provide a stable rotation control experience.

[0060] The circular knob is generally disc-shaped, typically with a central hole for connection to the free end of the threaded rod 12. Connections can be threaded, pinned, or nested press-fit, ensuring the knob and rod 12 form a secure, integrated rotating assembly. To enhance operating comfort, the outer edge of the circular knob features embossed patterns, grooves, a rubber coating, or anti-slip granular structures, effectively preventing slippage during operation and ensuring a good grip even with oily hands or wearing gloves.

[0061] During operation, the operator simply rotates the circular knob with their palm or fingertips to drive the threaded rod 12 to rotate about its axis, thereby achieving axial advancement or retraction of the piston 6 through the threaded transmission mechanism. Compared to traditional T-shaped handles or wrench-type handles, the circular knob structure offers significant advantages such as a neat appearance, minimal space occupation, clear visual interface, and intuitive operation. It is particularly suitable for compact equipment or densely arranged lubrication systems.

[0062] To further enhance the user experience, the knob surface can be equipped with a rotating scale ring or recessed indicator lines to indicate the number of rotations or grease injection progress. A transparent viewing window 21 or a circular scale can also be provided between the knob and the housing 8 to provide visual feedback on the grease injection process. If the operating torque is large, a foldable handle or a sliding extension rod can be added to the side of the knob to extend the lever arm and reduce the operating burden.

[0063] The circular knob can be made of high-strength plastic, ABS, aluminum alloy or composite materials, which not only meets the mechanical properties but also has good adaptability to surface treatment (such as sandblasting, oxidation, electroplating), while maintaining wear resistance and service life while improving the consistency of the overall appearance and industrial design aesthetics of the machine.

[0064] See also Figure 1-Figure 3 In one possible embodiment, to achieve rapid alignment, sealed fixation, and stable connection between the bearing oiling device and the bearing to be lubricated, the device is equipped with a dedicated fastening structure 3 consisting of a circular cover 19 and a positioning member 4. The circular cover 19 is an integrally molded or machined disc-shaped structure with an annular retaining ring at its bottom for assembly. A corresponding annular retaining groove is provided on the housing 8, and the two are connected by a rotational assembly method.

[0065] During assembly, the operator screws the circular cover 19 into the upper opening of the housing 8 in a predetermined direction, causing the retaining ring to engage with the retaining groove. The retaining ring then enters the retaining groove's positioning area, where it is locked with the aid of a rotational retaining structure (such as a retaining tooth, wedge-shaped surface, or stop block). This rotary retaining structure allows for rapid tightening while maintaining excellent repeatability, making it easy to operate and quick to disassemble, making it suitable for multi-batch, continuous lubrication operations.

[0066] To enhance alignment accuracy and bearing retention during the grease injection process, a locating member 4 is fixedly attached to the center of the cover. This cylindrical member 4's axis is coaxial with the cover. This member 4 is designed to match the structure of the tapered roller bearing and its dimensions are precisely designed to allow for insertion into the inner bore of the bearing without damaging it, achieving both axial and radial positioning. Because the locating member 4 is fixedly connected to the cover, there is no assembly error between the two, ensuring a stable, repeatable coaxial connection during each installation, helping to maintain consistent grease injection path direction.

[0067] The cover and positioning member 4 can be secured together using welding, interference fit, screw fastening, or integral injection molding. The optimal solution is determined by the selected materials and required strength. The entire fastening structure 3 can be constructed from stainless steel, anodized aluminum, or reinforced engineering plastics, depending on the intended use. While ensuring structural strength, it also offers excellent corrosion and deformation resistance, making it particularly suitable for frequent assembly and disassembly, or for long-term outdoor use.

[0068] Through the fixed connection form of the fastening structure 3, the entire grease injection interface area has good mechanical strength, structural sealing and installation repeatability, and can achieve accurate and fast switching between various bearing models, thereby improving the efficiency of grease injection operations, reducing operational errors, and effectively lowering maintenance costs.

[0069] See also Figure 1-Figure 3 In one possible embodiment, to visualize and observe the grease injection process from multiple angles, multiple observation windows 21 are provided on the fastening structure 3 and evenly spaced along the outer circumference of the positioning member 4, forming a circumferential array. These observation windows 21 are used to monitor the grease filling status in real time during the grease injection process, assisting the operator in determining whether the grease has adequately covered the bearing raceways, whether there are any cavities, or whether the grease is insufficiently filled, thereby improving the accuracy and standardization of the grease injection process.

[0070] Each observation window 21 is oval or rectangular in shape and of suitable size, providing a clear field of view without weakening the structural strength of the positioning member 4. These observation windows 21 can be made of high-strength transparent materials such as polycarbonate (PC), acrylic (PMMA), or tempered glass. They are impact-resistant, scratch-resistant, and chemical-resistant, making them suitable for use in a variety of industrial lubrication environments.

[0071] The position of the observation windows 21 is designed based on the radial range of the bearing raceway area, ensuring that grease can be clearly observed from any angle as it is applied to critical areas. Their circular arrangement not only enhances visual coverage but also facilitates monitoring in various mounting orientations and lighting conditions. For example, even if the bearing is tilted in one direction, the grease distribution can still be seen from the corresponding window, avoiding blind spots and misjudgments caused by a single window.

[0072] To further enhance ease of use, the inner surface of the observation window 21 area can be coated with an anti-fog layer, an anti-oil coating, or provided with micro-protrusions to repel attached grease particles or condensed water droplets, ensuring a clear field of view. A sliding cover, protective shield, or rotating ring cover assembly can also be provided on the outside to prevent dust and light interference from affecting its performance when not in use.

[0073] This multi-window circumferentially evenly distributed structure achieves a good balance between structural strength, functional coverage and manufacturing cost, while enhancing the operator's control over the lubrication status during the greasing process. It is an important auxiliary device for precise greasing and process visualization.

[0074] See also Figure 2 In one possible embodiment, to further enhance sealing performance and grease control during grease injection, an elastic rubber ring 5 is positioned on the outer surface of positioning member 4. This rubber ring 5 is specifically designed to seal against the inner ring of the tapered roller bearing. This structural design effectively prevents grease from escaping from the bearing bore during injection, avoiding grease waste and equipment contamination, while maintaining the cleanliness of the grease injection area and maintaining the stability of the lubrication effect.

[0075] The rubber ring 5 is preferably made of a synthetic rubber that is oil-resistant, heat-resistant, and highly elastic, such as fluororubber (FKM), nitrile rubber (NBR), or silicone rubber. Its cross-section can be circular, rectangular, or lip-shaped, depending on the bearing inner ring's dimensions and sealing requirements. The rubber ring 5 is embedded in a circumferential groove in the positioning member 4. This groove is formed by turning or injection molding, ensuring good installation stability and dimensional fit during assembly.

[0076] During grease injection, when positioning member 4 is inserted into the bearing bore, preloaded contact is established between rubber ring 5 and the bearing inner ring, creating a localized seal. Grease is then injected into the bearing raceway under the force of piston 6. Because the bearing inner ring is sealed by rubber ring 5, grease cannot escape axially, resulting in a closed filling within the raceway cavity. This facilitates quantitative grease distribution and pressure-balanced filling. This sealing effect not only improves grease injection accuracy but also reduces the complexity of cleaning during operation, thereby enhancing work efficiency.

[0077] Furthermore, the rubber ring 5 structure can also cushion the mechanical contact forces between the positioning member 4 and the bearing to a certain extent, preventing assembly scratches or structural damage caused by hard contact. To enhance durability, a multi-stage sealing structure or a composite rubber ring 5 can be used. These features offer self-lubrication and high recovery properties, making them suitable for high-frequency grease injection.

[0078] The addition of the rubber ring 5 structure enables the grease injection equipment to have stronger sealing adaptability when dealing with different types of bearings and different inner hole sizes. By replacing rubber ring 5 components of different sizes, the equipment can be quickly converted in grease injection tasks of multiple types of bearings, enhancing the versatility and operational reliability of the system.

[0079] Throughout this specification, references to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" indicate that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, illustrative uses of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0080] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A bearing oiling device, characterized in that: include: A grease container, wherein the grease container is a hollow cylindrical structure, and a tapered opening is provided at the top of the grease container, and the tapered opening is used to fit tightly with the tapered roller bearing to be filled with oil; a fastening structure, the fastening structure being detachably connected to the tapered opening and provided with a positioning member for limiting radial movement of the tapered roller bearing and an observation window for observing the injection status of the grease; a piston disposed in the cavity of the grease container and sealingly engaged with the inner wall of the grease container so as to be capable of reciprocating along the axial direction of the grease container; a driving structure for driving the piston to move back and forth along the axis of the grease container to push the grease into the interior of the tapered roller bearing; a housing for accommodating the grease container, the fastening structure, the piston, and the driving structure as an integrated structure; The bottom of the grease container is provided with an air vent for releasing the air pressure in the cavity during the movement of the piston to prevent the piston from being blocked due to sealing. The piston, the grease container and the fastening structure together form a closed cavity, which is used to contain the grease and surround the tapered roller bearing to be oiled, so as to ensure the closedness, stability and controllability of the grease injection process.

2. The bearing oiling device according to claim 1, characterized in that: The driving structure includes: a transmission rod, one end of which is fixedly connected to the piston and the other end of which extends out of the grease container; a transmission member, the transmission member being in transmission connection with the second end of the transmission rod so that the transmission rod and the transmission member move parallel to the axial direction of the transmission rod; a transmission sleeve, the transmission sleeve being fixedly connected to the transmission rod; a threaded rod, the threaded rod being threadably connected to the transmission sleeve and being arranged parallel to the transmission rod; When the threaded rod rotates, the transmission sleeve and the transmission rod move vertically along the axis direction, thereby driving the piston to move synchronously.

3. The bearing oiling device according to claim 2, characterized in that: The transmission member is a triangular structure, the first end of the transmission member is fixedly connected to the transmission sleeve, the second end of the transmission member is overlapped on the transmission rod, and the length of the first end is greater than the length of the second end.

4. The bearing oiling device according to claim 2, characterized in that: The driving structure further includes: A lubricating sleeve is sleeved on the threaded rod and fixedly arranged on the housing. The lubricating sleeve is rotatably connected to the threaded rod in the horizontal direction and limits the axial displacement of the threaded rod in the vertical direction.

5. The bearing oiling device according to claim 4, characterized in that: The lubricating sleeve comprises: a sleeve body, the sleeve body being sleeved on the threaded rod and fixedly connected to the housing; A first bearing and a second bearing, the first bearing and the second bearing are respectively installed at both ends of the sleeve body, the inner ring of the first bearing and the inner ring of the second bearing are fixedly connected to the threaded rod, and the outer rings of the first bearing and the second bearing are fixedly connected to the inner wall of the sleeve body.

6. The bearing oiling device according to claim 4, characterized in that: It also includes a liquid level indicator, which is fixedly connected to the transmission sleeve. A liquid level display window is provided on the housing. The liquid level indicator is adapted to the liquid level display window so that the state of the grease can be observed and the grease can be replenished in time.

7. The bearing oiling device according to claim 2, characterized in that: A rotating handle is provided on the threaded rod.

8. The bearing oiling device according to claim 1, characterized in that: The fastening structure comprises: A circular cover body, wherein a snap ring is provided at the bottom of the circular cover body, and a snap groove is provided on the outer shell, wherein the snap ring is adapted to fit into the snap groove so that the circular cover body can be screwed into and installed on the outer shell; The positioning member is a cylindrical structure, the positioning member is concentrically arranged with the circular cover, and the positioning member is adapted to the tapered roller bearing.

9. The bearing oiling device according to claim 8, characterized in that: There are multiple observation windows, all of which are located outside the positioning member and are evenly distributed in a circular array.

10. The bearing oiling device according to claim 3, characterized in that: The positioning member is provided with a rubber ring, which is used to cooperate with the inner ring of the tapered roller bearing to prevent grease from overflowing from the inner hole of the bearing.

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