Dynamic grease flow regulating device for oil-impregnated bearings

Abstract

The utility model relates to mechanical lubrication auxiliary equipment technical field discloses oil bearing dynamic lubricating grease flow regulating device, including the chassis, and the base body fixedly connected in the top of chassis, the base body top rotatably connected with circular bearing, circular bearing bottom fixedly connected with the rolling bar, the chassis front side fixed mounting has the motor, and the motor drives circular bearing and rolling bar to rotate in the base body through the transmission assembly, and the base body bottom is linked with the lubricating grease storage cavity, and the lubricating grease storage cavity side wall is linked with the discharge gate. The utility model discloses through the rolling bar agitating lubricating grease to keep the liquidity, and realizes the intelligent dynamic accurate regulation to lubricating grease flow with controller and valve, solves the problem that lubricating grease is easy to condense and supplies and cannot self -adaptation regulation.

Description

Technical Field

[0001] This utility model relates to the field of mechanical lubrication auxiliary equipment technology, and in particular to a dynamic grease flow regulating device for oil-impregnated bearings. Background Technology

[0002] In modern mechanical equipment, bearings are core transmission components, and their operating condition directly affects the lifespan and efficiency of the entire equipment. In order to reduce the coefficient of friction and remove the heat generated by friction, continuous lubrication of the bearing parts is usually required. Although oil-impregnated bearings have a certain self-lubricating properties, under high load, high speed operation or long-term working conditions, the lubricating oil contained in the base body is often insufficient to maintain an ideal lubricating film. Therefore, external grease is required to enhance the lubrication effect. Compared with lubricating oil, grease has better adhesion and sealing properties, but its semi-solid physical properties also bring about the problem of poor fluidity.

[0003] Most existing grease supply devices adopt a static oil reservoir structure, which uses gravity or a preset constant pressure to push the grease to the outlet. However, this passive supply method has obvious limitations. Due to the thixotropic and high viscosity of grease, in the absence of external mechanical disturbance or shear force, the grease in the reservoir is prone to solidification or even caking, resulting in increased flow resistance. Especially in low temperature environments or at the initial stage of equipment startup, the grease in the static reservoir is difficult to flow out smoothly, which can easily cause blockage of the outlet or interruption of grease supply, thereby causing dry friction wear of the bearing.

[0004] Furthermore, during actual operation, the rotational speed and temperature rise of mechanical equipment are dynamic, and the demand for lubricant also fluctuates accordingly. Existing static supply devices lack a sensing and response mechanism for the operating status of the equipment. They cannot automatically increase the flow of grease based on the real-time temperature rise or speed increase of the bearing, nor can they reduce the supply when operating at low speed. This unchanging passive supply mode not only makes it difficult to meet the precise lubrication needs under complex working conditions, but also easily leads to waste due to excessive grease supply or overheating and damage to the equipment due to insufficient grease supply.

[0005] Therefore, this utility model proposes a dynamic grease flow regulating device for oil-impregnated bearings to address the shortcomings of existing technologies. Utility Model Content

[0006] In view of the common problems in existing oil-impregnated bearing lubrication auxiliary equipment, such as the grease easily stagnates in the static storage cavity, resulting in poor fluidity and easy blockage, and the device cannot actively adjust the grease supply flow in real time according to the temperature and speed changes during equipment operation, resulting in poor lubrication effect and lack of intelligent management, this utility model aims to provide an oil-impregnated bearing dynamic grease flow regulation device with improved structure that can effectively solve the above problems.

[0007] This utility model provides a dynamic grease flow regulating device for oil-impregnated bearings, comprising: a base frame, and a base body fixedly connected to the top of the base frame; a cover plate is fixedly connected to the top end face of the base body, and a cover plate is fixedly connected to the bottom end face of the base body; a circular bearing is rotatably connected to the center of the cover plate located at the top of the base body; an inlet pipe is connected to the center of the cover plate located at the bottom of the base body; a grease reservoir is fixedly connected to the bottom end of the inlet pipe, and the grease reservoir is disposed in the internal space of the base frame.

[0008] The circular bearing has multiple rolling rods fixedly connected to its bottom. These rolling rods extend into the internal space of the base and agitate the internal grease through their movement.

[0009] Furthermore, a motor is fixedly mounted on the front surface of the base frame; the output shaft of the motor is rotatably connected to the circular bearing via a transmission assembly to drive the circular bearing and the rolling rod to rotate within the base; the side wall of the grease reservoir is connected to a discharge port, which passes through the base frame and extends to the outside of the base frame; a valve is vertically fixedly mounted on the top of the discharge port; a connecting pipe is fixedly connected to the outer wall of the base; a sensor and a controller are mounted on the connecting pipe; the detection end of the sensor passes through the connecting pipe and extends into the interior of the base; the sensor is electrically connected to the controller, and the controller is electrically connected to the motor, thereby constructing a dynamic control loop based on environmental feedback.

[0010] Preferably, a sealing ring is fixedly fitted on the outer wall of the connection between the discharge port and the base frame; the sealing ring is filled in the gap between the discharge port and the base frame in an interference fit manner, and this tight fit effectively prevents the grease from leaking during the transmission process.

[0011] Preferably, a protective sleeve is fixedly connected to the bottom of the grease reservoir; the protective sleeve is fitted onto the bottom of the outer surface of the grease reservoir to cover the bottom of the grease reservoir, and the structure can block external dust and impurities and provide physical protection for the bottom of the reservoir.

[0012] Preferably, an inner mounting ring is provided at the center of the cover plate located on top of the base; the outer ring of the circular bearing is fixedly connected to the inner wall of the inner mounting ring, and the inner ring structure provides stable rotational support and positioning.

[0013] Preferably, the rolling rods are evenly spaced along the circumference of the circular bearing; and the length of the rolling rods is less than the internal axial height of the base to avoid motion interference. Furthermore, the grease reservoir has an inverted frustum-shaped structure, and the large-diameter end of the grease reservoir is fixedly connected to the inlet pipe, using the conical structure to guide the grease to converge smoothly.

[0014] Preferably, the sensor includes a temperature sensor and a speed sensor; the temperature sensor and the speed sensor are used to detect the internal environmental data of the substrate, and can capture the working temperature of the lubricating grease and the mechanical speed in real time, providing data support for intelligent adjustment.

[0015] Preferably, the valve is a manual flow regulating valve or an electric flow regulating valve; the valve is used to regulate the grease outflow rate at the discharge port, and achieves precise flow control by changing the flow cross-sectional area.

[0016] Preferably, the motor is fixed to the front side of the base frame via an L-shaped mounting bracket; the transmission component is a belt drive mechanism or a gear drive mechanism, and the transmission component is located on the outer side of the base body to ensure the smoothness and reliability of power transmission.

[0017] This utility model has the following beneficial effects:

[0018] 1. This utility model solves the problem in the prior art that high-viscosity grease is prone to solidification in the static storage cavity and is difficult to be driven to the discharge port by setting a motor to drive the circular bearing and the rolling rod to rotate. The rolling rod agitates and pushes the grease, thus achieving the effect of ensuring the fluidity of the grease and realizing the stable output of the grease.

[0019] 2. This utility model integrates a sensor and a controller. The controller receives real-time data on the temperature and rotation speed inside the substrate and dynamically adjusts the motor speed based on the data. This solves the problem that existing lubrication devices cannot adjust the lubricant supply in real time according to actual operating conditions, achieving adaptive matching between the grease flow rate and the equipment operating status, and realizing dynamic and precise lubrication.

[0020] 3. This utility model, by setting a valve at the outlet of the lubricating grease and cooperating with the controller to regulate the motor speed, realizes dual control of mechanical throttling of the lubricating grease flow and power source output, solving the problems of single flow regulation method and insufficient control precision in the prior art, and achieving the effect of flexible and reliable flow regulation and meeting the precise grease supply needs of different working conditions. Attached Figure Description

[0021] Figure 1 This is a three-dimensional schematic diagram of the dynamic grease flow regulating device for oil-impregnated bearings proposed in this utility model;

[0022] Figure 2 This is a schematic diagram of the motor structure of the dynamic grease flow regulating device for oil-impregnated bearings proposed in this utility model;

[0023] Figure 3 This is a schematic diagram of the valve structure of the oil-impregnated bearing dynamic grease flow regulating device proposed in this utility model;

[0024] Figure 4 This is a schematic cross-sectional view of the grease reservoir of the dynamic grease flow regulating device for oil-impregnated bearings proposed in this utility model.

[0025] Legend:

[0026] 1. Matrix; 2. Circular bearing; 3. Grease reservoir; 4. Protective sleeve; 5. Valve; 6. Discharge port; 7. Connecting pipe; 8. Base frame; 9. Motor; 10. Sensor; 11. Controller; 12. Sealing ring; 13. Cover plate; 14. Rolling rod; 15. Inlet pipe. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0028] Example:

[0029] Please refer to Figures 1 to 4 This utility model provides a dynamic grease flow regulating device for oil-impregnated bearings, which aims to solve the technical problems in the prior art where oil-impregnated bearing lubrication devices typically use passive lubrication and it is difficult to adjust the grease flow in real time according to changes in temperature or speed during equipment operation, and the grease tends to solidify in the static storage cavity, leading to poor output.

[0030] like Figure 1 and Figure 2As shown, the oil-impregnated bearing dynamic grease flow regulating device includes a base frame 8 and a base 1 fixedly connected to the top of the base frame 8. The base 1, as the main supporting shell of the device, has a hollow cylindrical structure. A cover plate 13 is fixedly connected to the top end face of the base 1 by bolts, and a cover plate 13 is fixedly connected to the bottom end face of the base 1 by bolts. The top and bottom cover plates 13, together with the base 1, form a relatively closed internal working space to accommodate the lubricating medium. An inner mounting ring is provided at the center of the cover plate 13 at the top of the base 1. A circular bearing 2 is interference-fitted and rotatably connected to the inner wall of the inner mounting ring. The circular bearing 2 serves as the main rotating support component. An inlet pipe 15 is connected to the center of the cover plate 13 at the bottom of the base 1. The inlet pipe 15 extends vertically downward and penetrates the upper surface of the base frame 8. A grease reservoir 3 is fixedly connected to the bottom end of the inlet pipe 15. The grease reservoir 3 is integrally set at the bottom. The internal space of the frame 8 has an inverted frustum-shaped structure. The large-diameter end of the grease reservoir 3 is fixedly connected to the inlet pipe 15 to temporarily store grease and guide it downwards using gravity and fluidity. To achieve dynamic agitation of the internal grease, multiple rolling rods 14 are fixedly connected to the bottom of the circular bearing 2. The rolling rods 14 are evenly spaced along the circumference of the circular bearing 2 and extend into the internal space of the base 1. The length of the rolling rods 14 is less than the internal axial height of the base 1 to avoid interference with the bottom cover plate 13. The front surface of the base frame 8 is fixedly mounted with a motor 9 through an L-shaped mounting seat. The motor 9 serves as the main power source. The output shaft of the motor 9 is rotatably connected to the circular bearing 2 through a transmission assembly located on the outside of the base 1. Specifically, the motor 9 drives the circular bearing 2 to rotate the rolling rods 14 inside the base 1, thereby agitating the grease inside the base 1 to maintain its fluidity.

[0031] To achieve effective transfer of grease from the internal storage space to the external parts requiring lubrication, the side wall of the grease reservoir 3 is connected to a discharge port 6. The discharge port 6 extends horizontally and passes through the side wall structure of the base frame 8, thus extending to the external space of the base frame 8. As the only physical channel for grease output, the discharge port 6 directly determines the flow direction of the grease. To prevent grease leakage when flowing through the joint between the discharge port 6 and the base frame 8, a sealing ring 12 is fixedly fitted on the outer wall of the connection between the discharge port 6 and the base frame 8. The sealing ring 12 is filled in the annular gap between the discharge port 6 and the base frame 8 with an interference fit. The elastic deformation of the sealing ring 12 itself squeezes the outer wall of the discharge port 6 and the inner wall of the base frame 8, thereby forming a tight sealing interface to prevent grease leakage.

[0032] To address the need for adjusting the output flow rate of the lubricating grease, a valve 5 is vertically fixed at the top of the pipe section extending from the outlet 6 to the outside of the base frame 8. The valve 5, as the core actuator for flow control, directly enters the flow channel of the outlet 6. The valve 5 can be a manual flow regulating valve or an electric flow regulating valve. The operator or control system can change the flow cross-sectional area in the outlet 6 by adjusting the valve core opening of the valve 5, thereby mechanically throttling the rate of the lubricating grease flowing out of the lubricating grease reservoir 3. This adjustment method can be combined with the speed adjustment of the internal motor 9 to form a dual flow control mechanism to adapt to the differentiated needs for the supply of lubricating grease under different working conditions.

[0033] Considering that dust can easily accumulate at the bottom of the device or that it may be subject to physical impact, a protective sleeve 4 is fixedly connected to the bottom of the grease reservoir 3. The protective sleeve 4 is tightly fitted onto the bottom of the outer surface of the grease reservoir 3 and covers the bottom conical tip of the grease reservoir 3. The protective sleeve 4 is made of wear-resistant or dustproof material. Through the physical shielding effect of the protective sleeve 4, on the one hand, it can isolate dust, impurities and other pollutants in the external environment from corroding the bottom material of the grease reservoir 3. On the other hand, it can also provide cushioning protection for the relatively fragile bottom of the grease reservoir 3 during the handling or installation of the device, preventing deformation or breakage caused by accidental impact.

[0034] To achieve precise capture and closed-loop control of the internal operating environment parameters of the device, a hollow connecting pipe 7 is fixedly installed on the outer wall of the base 1 by welding. The connecting pipe 7 extends outward as a mounting carrier for electrical components. A sensor 10 and a controller 11 are integrated and installed at the end or side wall of the connecting pipe 7. The sensor 10 specifically integrates a high-sensitivity temperature sensor and a Hall speed sensor. The detection end of the sensor 10 passes through the central through hole of the connecting pipe 7 and extends into the internal cavity of the base 1, thereby directly exposing itself to the working environment inside the base 1 to obtain first-hand data. The data output end of the sensor 10 is electrically connected to the data input end of the controller 11 through a shielded signal line. The control signal output end of the controller 11 is electrically connected to the drive circuit of the motor 9, thereby constructing an electrical connection loop from environmental perception to power source regulation.

[0035] Regarding the specific installation and transmission path of the power source, the motor 9 is not directly suspended, but is fixed to the front vertical surface of the base frame 8 by bolts through a rigid L-shaped mounting base. The L-shaped mounting base provides a stable support plane to prevent the motor 9 from shifting or vibrating when it is running at high speed. A transmission component located on the outside of the base 1 is provided between the output shaft of the motor 9 and the circular bearing 2. The transmission component specifically adopts a belt pulley transmission mechanism or a precision gear meshing mechanism. The driving wheel of the transmission component is fixedly sleeved on the output shaft of the motor 9, and the driven wheel of the transmission component forms a transmission connection with the rotation center shaft or outer ring structure of the circular bearing 2, thereby smoothly transmitting the rotational power of the motor 9 to the rotating parts inside the base 1.

[0036] In the internal core rotating component's structural layout, an inner mounting ring extends downward from the geometric center of the cover plate 13 at the top of the base 1. The inner cylindrical surface of the inner mounting ring is precision machined. The outer ring of the circular bearing 2 is interference-fitted to the inner wall of the inner mounting ring by heat fitting or press fitting to ensure the coaxiality of the rotation center. Multiple rolling rods 14 are vertically fixed to the bottom surface of the circular bearing 2 by welding or threaded connection. The rolling rods 14 are evenly spaced in an array along the circumference of the circular bearing 2, and the axial length of each rolling rod 14 is designed to be less than the net height of the internal cavity of the base 1. The grease reservoir 3 is designed as an inverted frustum-shaped structure with a larger top and a smaller bottom. The wide end of the top of the grease reservoir 3 is tightly connected to the bottom end of the inlet pipe 15 by flange or thread. The inverted conical sidewall structure can guide the high-viscosity grease to slide down to the bottom protective sleeve 4 area.

[0037] Working principle: When the oil-impregnated bearing dynamic grease flow regulating device is put into operation, the cover plate 13 at the top and bottom of the base 1 seals the internal space of the base 1, and is supported by the base frame 8. The grease storage cavity 3 completes the initial grease filling under the protection of the protective sleeve 4. The grease can enter from the injection port reserved on the cover plate 13 or from the inlet pipe 15 through the external pumping system and fill the grease storage cavity 3 and the interior of the base 1. The sealing ring 12 ensures that there is no leakage at the connection between the outlet 6 and the base frame 8. The sensor 10 and controller 11 system are started and ready.

[0038] The controller 11 sends a start signal to the motor 9, which is powered on and starts running. The rotational torque of the motor 9 is transmitted to the circular bearing 2 through the transmission assembly. The circular bearing 2 starts to rotate in the mounting inner ring of the top cover plate 13. The circular bearing 2 drives multiple rolling rods 14 fixed to the bottom to move synchronously in the internal space of the base 1. The movement of the rolling rods 14 performs strong shearing and agitation on the grease. The agitation of the rolling rods 14 can effectively destroy the thixotropic structure of the grease and maintain its fluidity, preventing the grease from solidifying or settling due to standing. The centrifugal force generated by the rolling rods 14 when rotating at high speed generates a pushing force on the grease inside the grease storage cavity 3. The pushing force is the main power source for driving the grease to flow to the discharge port 6. At the same time, the rotation of the rolling rods 14 brings the grease to the vicinity of the circular bearing 2, realizing effective lubrication of the bearing.

[0039] As the rolling rod 14 continues to rotate, under the guidance of centrifugal thrust and gravity, the grease is driven to converge along the inner wall of the inverted truncated cone of the grease reservoir 3. Under pressure, the grease enters through the grease reservoir 3 and flows to the outlet 6. At this time, the opening of the valve 5 is adjusted by the operator or the controller 11. The valve 5 mechanically controls the flow rate of the grease at the outlet 6. The valve 5, together with the thrust generated by the rotation speed of the rolling rod 14, realizes the precise output and regulation of the grease flow rate.

[0040] Throughout the entire operation of the device, the sensor 10 installed on the connecting pipe 7 continuously monitors the operating parameters within the substrate 1 in real time. The temperature sensor of the sensor 10 detects the operating temperature, and the speed sensor detects the rotational speed of the circular bearing 2. The sensor 10 feeds back the collected data to the controller 11. The controller 11 performs logical analysis on the received data. When it detects that the operating temperature has risen above the preset threshold or the lubrication demand has increased, the controller 11 outputs a control signal to regulate the speed of the motor 9. By increasing the speed of the motor 9, the controller 11 increases the stirring speed and centrifugal thrust of the rolling rod 14, thereby increasing the effective output flow of the lubricating grease to achieve the purpose of cooling and enhancing lubrication. This realizes intelligent dynamic management from environmental parameter perception to power output adjustment.

Claims

1. A dynamic grease flow regulating device for oil-impregnated bearings, comprising: The base frame (8) and the base (1) fixedly connected to the top of the base frame (8); A cover plate (13) is fixedly connected to the top end face of the substrate (1), and a cover plate (13) is fixedly connected to the bottom end face of the substrate (1). A circular bearing (2) is rotatably connected at the center of the cover plate (13) located on top of the base (1); An inlet tube (15) is connected to the center of the cover plate (13) at the bottom of the substrate (1); The bottom end of the inlet tube (15) is fixedly connected to a grease reservoir (3), which is located in the internal space of the base frame (8). Its features are, The bottom of the circular bearing (2) is fixedly connected to multiple rolling rods (14), which extend into the internal space of the base (1); A motor (9) is fixedly mounted on the front surface of the base frame (8); The output shaft of the motor (9) is rotatably connected to the circular bearing (2) through a transmission assembly to drive the circular bearing (2) and the rolling rod (14) to rotate within the base (1); The side wall of the grease reservoir (3) is connected to the outlet (6), which passes through the base frame (8) and extends to the outside of the base frame (8); A valve (5) is vertically fixed to the top of the discharge port (6); A connecting pipe (7) is fixedly connected to the outer wall of the substrate (1); A sensor (10) and a controller (11) are installed on the connecting pipe (7); The probe end of the sensor (10) passes through the connecting tube (7) and extends into the interior of the substrate (1); The sensor (10) is electrically connected to the controller (11), and the controller (11) is electrically connected to the motor (9).

2. The dynamic grease flow regulating device for oil-impregnated bearings according to claim 1, characterized in that, A sealing ring (12) is fixedly sleeved on the outer wall of the connection between the discharge port (6) and the base frame (8). The sealing ring (12) fills the gap between the discharge port (6) and the base frame (8) in an interference fit manner.

3. The dynamic grease flow regulating device for oil-impregnated bearings according to claim 1, characterized in that, A protective sleeve (4) is fixedly connected to the bottom of the grease reservoir (3). The protective sleeve (4) is fitted on the bottom of the outer surface of the grease reservoir (3) to cover the bottom end of the grease reservoir (3).

4. The dynamic grease flow regulating device for oil-impregnated bearings according to claim 1, characterized in that, An inner ring is provided at the center of the cover plate (13) at the top of the base (1), and the outer ring of the circular bearing (2) is fixedly connected to the inner wall of the inner ring.

5. The dynamic grease flow regulating device for oil-impregnated bearings according to claim 1, characterized in that, The rolling rods (14) are evenly spaced along the circumference of the circular bearing (2), and the length of the rolling rods (14) is less than the internal axial height of the base (1).

6. The dynamic grease flow regulating device for oil-impregnated bearings according to claim 1, characterized in that, The sensor (10) includes a temperature sensor and a speed sensor, which are used to detect the internal environmental data of the substrate (1).

7. The dynamic grease flow regulating device for oil-impregnated bearings according to claim 1, characterized in that, The valve (5) is a manual flow regulating valve or an electric flow regulating valve. The valve (5) is used to regulate the flow rate of lubricating grease from the outlet (6).

8. The dynamic grease flow regulating device for oil-impregnated bearings according to claim 1, characterized in that, The motor (9) is fixed to the front side of the base frame (8) by an L-shaped mounting bracket. The transmission component is a belt drive mechanism or a gear drive mechanism, and the transmission component is located on the outer side of the base (1).

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