Ring gear linkage grease feed system
By using a gear ring linkage grease supply system, an arc-shaped scraper and a counting sensor are used to detect the number of rotations of the gear ring. Combined with a lubrication controller and circuit design, full-tooth surface lubrication and precise grease supply are achieved, solving the problems of uneven and insufficient lubrication of the gear ring and improving lubrication efficiency and system reliability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YICHANG HONGJIN TECH CO LTD
- Filing Date
- 2025-07-31
- Publication Date
- 2026-07-14
AI Technical Summary
Existing gear ring lubrication technologies have shortcomings in grease application methods, applicability to curved gear rings, and grease supply control, resulting in uneven lubrication, insufficient lubrication, or waste, and failing to meet the requirements for efficient and precise lubrication.
The system employs a gear ring linkage grease supply system, which uses an arc-shaped scraper and a counting sensor to detect the number of rotations of the gear ring. Combined with the lubrication controller and circuit design, it achieves precise grease supply and full gear surface lubrication. The counting sensor and control system automatically adjust the lubrication timing, frequency, and pressure to adapt to different viscosities and operating conditions.
It achieves efficient lubrication of the entire gear surface, precise control of grease supply, reduces waste, improves lubrication adaptability and system reliability, and reduces the waste of operation and maintenance resources and the risk of equipment contamination.
Smart Images
Figure CN224497357U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lubrication technology, and in particular to a gear ring linkage grease supply system. Background Technology
[0002] In various mechanical transmission systems, effective lubrication of gear rings is crucial for ensuring stable equipment operation, extending service life, and improving transmission efficiency. Currently, there are various lubrication methods for gear rings; however, these traditional lubrication technologies generally have some problems that urgently need to be addressed.
[0003] Some existing technologies use through holes at the tooth root and rely on ball bearings and compression springs to control the flow of lubricating oil. This method cannot achieve lubrication of the entire tooth surface, and the spring requires a guiding structure, increasing structural complexity. Furthermore, the ball bearings are prone to wear, leading to poor sealing and oil leakage. Other technologies utilize gear meshing for tooth lubrication, or drive a gear pump through gear meshing and achieve lubrication via branch lines. However, this method is similar to conventional distributor lubrication and is not suitable for high-viscosity greases. Some technologies use gear meshing as a power drive, but because the nozzles are positioned on both sides of the meshing gears, the teeth are not adequately lubricated, resulting in uneven lubrication.
[0004] In lubrication of curved workpieces, traditional lubrication mechanisms can achieve uniform lubrication for straight workpieces, but struggle with curved workpieces like gear rings. Existing lubrication mechanisms typically consist of a horizontal moving module and a lubrication block. When used on curved workpieces, uneven oil layer formation occurs, severely impacting the subsequent use of the workpiece. Furthermore, most current gear ring lubrication systems lack precision in grease supply control. Traditional methods rely on fixed time intervals or simple manual experience to add grease, failing to provide real-time, precise grease supply control based on the gear ring's actual operating conditions, such as speed and load. This not only easily leads to grease waste but can also cause accelerated gear ring wear due to insufficient lubrication. For example, in the lubrication of yaw or pitch gear rings in some wind turbine generators, a lubrication pump and control system are used for grease addition, performed simultaneously with the slewing bearing lubrication. This fails to provide precise grease supply based solely on the gear ring's actual needs, resulting in wasted maintenance resources, excessive cost to the gear ring, and negatively impacting the cleanliness of the wind turbine.
[0005] In summary, existing gear ring lubrication technologies have significant shortcomings in terms of grease application methods, applicability to curved gear rings, and grease supply control. Developing a system capable of achieving efficient lubrication across the entire gear surface, suitable for curved gear rings, and with precise grease supply control is of significant practical importance, which is precisely the initial motivation behind the development of this new gear ring linkage grease supply system. Summary of the Invention
[0006] The technical problem to be solved by this utility model is to provide a gear ring linkage grease supply system that accurately and reasonably supplies grease to the gear ring.
[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:
[0008] The gear ring linkage grease supply system includes an arc-shaped scraper and a counting sensor. The scraper is adapted to the arc shape of the gear ring, and an oil outlet hole is provided on the scraper. The oil supply pipe is connected to the oil outlet hole to deliver grease to the scraper. The counting sensor is used to detect and count the pulse signals on the tooth tips of the gear ring. The tooth tip signals are calculated and converted into the number of rotations of the gear ring, which determines when to supply grease in the oil pipe. When the grease is supplied, it enters the gap between the scraper and the gear ring from the oil outlet hole, and the rotation of the gear ring carries the grease into the tooth gap.
[0009] The aforementioned counting sensor is mounted on a fixed support plate, which is mounted on one side of the oil scraper.
[0010] The aforementioned oil scraper has a support at its rear end, and the support has a through hole for the oil supply pipe to pass through.
[0011] The aforementioned counting sensor is electrically connected to an external control system, transmitting the detected pulse signals to the control system. The control system then controls the timing of grease supply to the oil supply pipe based on the pulse signal count.
[0012] The above-mentioned oil outlet and oil supply pipe are both two. The counting sensor adopts a proximity switch D1. The control system includes a lubrication controller U1. The input terminal of the lubrication controller U1 is electrically connected to the proximity switch D1. The output terminal of the lubrication controller U1 controls the first lubrication control relay K1 and the second lubrication control relay K2. The first lubrication control relay K1 and the second lubrication control relay K2 are used to supply power to the oil supply valve on the oil supply pipe.
[0013] The aforementioned lubrication controller U1 is also connected to a grease pressure and supply pulse control circuit.
[0014] The aforementioned grease pressure and supply pulse control circuit includes a clock generator U3 and a supply pressure transformer T1 for controlling the supply pulse frequency and supply pressure, respectively.
[0015] The aforementioned clock generator U3 uses a 555 timer chip. Resistors R1 and R2 in the multi-position adjustable potentiometer R5 are connected in series and form an oscillation frequency input circuit with C6. The trigger TRIG at pin 2 and the threshold THERS at pin 6 of the clock generator U3 are connected to the intermediate node between R2 and C6. Multiple resistor positions of the multi-position adjustable potentiometer R5 are connected to the normally open contacts of multiple grease pulse frequency level relays. The coils of the grease pulse frequency level relays are controlled by the output terminal of the lubrication controller U1. The other end of the normally open contacts of the multiple grease pulse frequency level relays is electrically connected to the acquisition and discharge DISCH at pin 7 of the clock generator U3. The output OUT at pin 3 is connected to the gate of MOSFET Q1. The other two ends of MOSFET Q1 are connected to the ground wire and the primary coil of the supply pressure transformer T1, respectively. The secondary coil of the supply pressure transformer T1 is connected to the oil pump.
[0016] The secondary coil of the aforementioned supply pressure transformer T1 is provided with multiple turns ratio nodes, which are respectively connected to the normally open contacts of multiple supply pressure level relays. The other ends of the normally open contacts of the multiple supply pressure level relays are connected in parallel and electrically connected to the positive terminal of the oil supply pump. The negative terminal of the secondary coil of the supply pressure transformer T1 is electrically connected to the negative terminal of the oil supply pump. The coil of the supply pressure level relay is controlled by the lubrication pressure level signal output from the lubrication controller U1.
[0017] The above-mentioned grease pulse frequency level relays are three in number: K7, K8 and K9. The normally open contact of K7 is connected to the midpoint of resistor R1, which is pin 2 of the multi-position adjustable potentiometer R5. The normally open contact of K8 is connected to the midpoint of resistors R1 and R2, which is pin 1 of the multi-position adjustable potentiometer R5. The normally open contact of K9 is connected to the midpoint of resistor R2, which is pin 4 of the multi-position adjustable potentiometer R5.
[0018] There are two pressure level relays, namely K5 and K6.
[0019] The gear ring linkage grease supply system provided by this utility model has the following beneficial effects:
[0020] 1. Precise control of lubrication supply: Using STM32F103C8T6 (U1) as the lubrication controller, it receives the tooth tip pulse signal detected by proximity switch D1, and combines it with counting to achieve precise control of lubrication timing, avoiding the problems of insufficient lubrication or waste caused by traditional fixed intervals or manual experience control.
[0021] 2. Adaptable to arc-shaped gear ring lubrication: Relying on the arc-shaped oil scraper and the arc-shaped adaptation design of the gear ring, and with the oil outlet structure, the grease can be evenly delivered to the surface of the gear ring, solving the problem of uneven lubrication of arc-shaped gear rings by traditional flat workpiece lubrication mechanisms, and achieving effective lubrication of the entire gear surface.
[0022] 3. Multi-dimensional parameter adjustment: The pulse control circuit, which is composed of the NE555P (U3) clock generator, combined with adjustable resistors (such as R5) and relays (K7, K8, K9) can realize multi-level adjustment of lubrication frequency; the supply pressure transformer (T1) and relays (K5, K6) can realize multi-level control of supply pressure, which can adapt to different viscosity greases and gear ring operating conditions (such as speed, load), thus improving lubrication adaptability.
[0023] 4. Stable and reliable execution control: The lubrication control relays (K1, K2) control the oil supply valve, and the drive circuit composed of components such as MOSFET (Q1) ensures the stable execution of grease supply and reduces the risk of failure. At the same time, detection elements such as lubrication pressure 1 (US1) and lubrication pressure 2 (US2) can provide feedback on the system status, further ensuring operational reliability.
[0024] 5. Energy saving and environmental protection optimization: The oil collection plate is designed to recover excess grease, combined with precise supply control, to reduce grease waste; reasonable circuit layout (such as oil supply pipe passing through bracket holes) and component selection reduce system energy consumption, while reducing equipment pollution caused by oil leakage and other problems, and facilitating maintenance. Attached Figure Description
[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments:
[0026] Figure 1 This is a schematic diagram of the structure of this utility model;
[0027] Figure 2 This is a schematic diagram illustrating the use of this utility model;
[0028] Figure 3 This is the electrical schematic diagram of the control system of this utility model;
[0029] Figure 4 This is a schematic diagram of the grease pressure and supply pulse control circuit of this utility model.
[0030] In the diagram: 1. Scraper plate; 2. Oil outlet hole; 3. Oil supply pipe; 4. Counting sensor; 5. Fixed support plate; 6. Bracket; 7. Through hole; 8. Oil collection plate; 9. Gear ring. Detailed Implementation
[0031] like Figures 1-4As shown, the gear ring linkage grease supply system includes an arc-shaped scraper 1 and a counting sensor 4. The scraper 1 is adapted to the arc shape of the gear ring 9, and the scraper 1 is provided with an oil outlet hole 2. The oil supply pipe 3 is connected to the oil outlet hole 2 and is used to deliver grease to the scraper 1. The counting sensor 4 is used to detect and count the pulse signals of the tooth tips on the gear ring 9. The tooth tip signals are calculated and converted into the number of rotations of the gear ring 9, and thus determine when the grease in the oil pipe 3 is supplied. When the grease is supplied, it enters the gap between the scraper 1 and the gear ring 9 from the oil outlet hole 2, and the rotation of the gear ring 9 carries the grease into the tooth gap.
[0032] The arc-shaped scraper blade is adapted to the arc-shaped structure of the gear ring and combined with the oil outlet design to achieve full-tooth surface lubrication, solving the problem of uneven lubrication of arc-shaped workpieces by traditional lubrication methods; the lubrication timing is controlled by the number of rotations of the gear ring to avoid insufficient lubrication or waste; the oil collection plate recovers excess grease, reducing waste and pollution.
[0033] The aforementioned counting sensor 4 is mounted on the fixed support plate 5, which is mounted on one side of the oil scraper 1.
[0034] Ensuring the fixed detection position of the counting sensor improves the accuracy of pulse signal detection, providing a reliable data foundation for subsequent precise control of grease supply and enhancing the overall control accuracy of the system.
[0035] The aforementioned scraper blade 1 has a support 6 at its rear end, and the support 6 has a through hole 7 for the oil supply pipe 3 to pass through.
[0036] Standardize the layout of oil supply pipelines, reduce mutual interference between pipelines, reduce pipeline wear and failure risks, facilitate system installation and maintenance, and improve the compactness of the system structure.
[0037] The aforementioned counting sensor 4 is electrically connected to the external control system and transmits the detected pulse signal to the control system. The control system controls the timing of grease supply to the oil supply pipe 3 based on the pulse signal count.
[0038] It enables automated and precise control of grease supply timing, eliminating the drawbacks of traditional manual experience or fixed interval control. It supplies grease according to the actual operating state of the gear ring, reducing grease waste and wear caused by lubrication problems.
[0039] There are two oil outlets 2 and two oil supply pipes 3. The counting sensor 4 uses a proximity switch D1. The control system includes a lubrication controller U1. The input terminal of the lubrication controller U1 is electrically connected to the proximity switch D1. The output terminal of the lubrication controller U1 controls the first lubrication control relay K1 and the second lubrication control relay K2. The first lubrication control relay K1 and the second lubrication control relay K2 are used to supply power to the oil supply valve on the oil supply pipe 3.
[0040] Two oil outlets and an oil supply pipe correspond to different lubrication points. Proximity switch D1 acts as a counting sensor, connected to the input of lubrication controller U1. The output of U1 controls the first and second lubrication control relays K1 and K2, which in turn control the power supply to the oil supply valve on the oil supply pipe. The corresponding pipeline of the oil supply valve is not shown in the attached diagram, thus realizing the control of grease supply. The dual oil outlet and oil supply pipe design allows for simultaneous or separate lubrication of different areas of the gear ring, improving lubrication efficiency. The relay-controlled oil supply valve ensures stable and reliable control of grease supply, enhancing system controllability.
[0041] The aforementioned lubrication controller U1 is also connected to the grease pressure and supply pulse control circuit. It can receive and process relevant signals from this circuit to achieve comprehensive control of grease pressure and supply pulses. This allows the system to not only control the timing of supply but also regulate grease pressure and supply pulses, further improving lubrication accuracy, adapting to the lubrication needs of the gear ring under different working conditions, and ensuring lubrication effectiveness.
[0042] The aforementioned grease pressure and supply pulse control circuit includes a clock generator U3 and a supply pressure transformer T1 to control the supply pulse frequency and supply pressure, respectively. The clock generator U3 controls the supply pulse frequency, and the supply pressure transformer T1 controls the supply pressure. Working together, they provide suitable pulse frequency and pressure parameters for grease supply. The supply pulse frequency and pressure can be adjusted according to the gear ring's operating conditions, making the grease supply more closely match actual needs and avoiding poor lubrication or waste caused by unsuitable pressure or frequency, thus improving the adaptability of the lubrication system.
[0043] The aforementioned clock generator U3 uses a 555 timer chip. Resistors R1 and R2 in the multi-position adjustable potentiometer R5 are connected in series and form an oscillation frequency input circuit with C6. The trigger TRIG at pin 2 and the threshold THERS at pin 6 of the clock generator U3 are connected to the intermediate node between R2 and C6. Multiple resistor positions of the multi-position adjustable potentiometer R5 are connected to the normally open contacts of multiple grease pulse frequency level relays. The coils of the grease pulse frequency level relays are controlled by the output terminal of the lubrication controller U1. The other end of the normally open contacts of the multiple grease pulse frequency level relays is electrically connected to the acquisition and discharge DISCH at pin 7 of the clock generator U3. The output OUT at pin 3 is connected to the gate of MOSFET Q1. The other two ends of MOSFET Q1 are connected to the ground wire and the primary coil of the supply pressure transformer T1, respectively. The secondary coil of the supply pressure transformer T1 is connected to the oil pump.
[0044] Multiple lubrication pulse frequency levels can be controlled by adjusting the oscillation frequency to meet different lubrication needs; MOSFET tubes and transformers are used to achieve precise drive of the oil supply pump, improving the stability and controllability of grease supply and adapting to high viscosity grease lubrication.
[0045] The secondary coil of the aforementioned supply pressure transformer T1 has multiple turns ratio nodes, which are connected to the normally open contacts of multiple supply pressure level relays. The other ends of the normally open contacts of these relays are connected in parallel and electrically connected to the positive terminal of the oil pump. The negative terminal of the secondary coil of the supply pressure transformer T1 is electrically connected to the negative terminal of the oil pump. The coil of the supply pressure level relays is controlled by the lubrication pressure level signal output from the lubrication controller U1. The multiple turns ratio nodes of the secondary coil of the supply pressure transformer T1 are connected to the normally open contacts of the supply pressure level relays. The relay coil is controlled by the lubrication pressure level signal from the lubrication controller U1. By switching the contacts to change the secondary output voltage, the oil pump pressure is adjusted, achieving multi-level adjustment of the supply pressure. The grease supply pressure can be flexibly adjusted according to operating conditions such as gear ring load, ensuring that the grease effectively reaches the lubrication points, improving lubrication effect, and reducing energy waste.
[0046] The above-mentioned grease pulse frequency level relays are three in number: K7, K8 and K9. The normally open contact of K7 is connected to the midpoint of resistor R1, which is pin 2 of the multi-position adjustable potentiometer R5. The normally open contact of K8 is connected to the midpoint of resistors R1 and R2, which is pin 1 of the multi-position adjustable potentiometer R5. The normally open contact of K9 is connected to the midpoint of resistor R2, which is pin 4 of the multi-position adjustable potentiometer R5.
[0047] There are two supply pressure level relays, K5 and K6. These provide multiple pulse frequency and supply pressure combinations, enabling more precise matching of the lubrication requirements of the gear ring under different operating conditions, further optimizing lubrication performance, improving system flexibility and applicability, and reducing waste of maintenance resources.
Claims
1. A gear ring linkage grease supply system, characterized by: It includes an arc-shaped scraper (1) and a counting sensor (4). The scraper (1) is adapted to the arc shape of the gear ring (9). The scraper (1) is provided with an oil outlet hole (2). The oil supply pipe (3) is connected to the oil outlet hole (2) and is used to deliver grease to the scraper (1). The counting sensor (4) is used to detect the pulse signal of the tooth tip on the gear ring (9) and count it. The tooth tip signal is converted into the number of rotations of the gear ring (9) and thus determines when the grease in the oil pipe (3) is supplied. When the grease is supplied, it enters the gap between the scraper (1) and the gear ring (9) from the oil outlet hole (2) and is carried into the tooth gap by the rotation of the gear ring (9).
2. The gear ring linkage grease supply system according to claim 1, characterized in that, The counting sensor (4) is mounted on the fixed support plate (5), which is mounted on one side of the oil scraper (1).
3. The gear ring linkage grease supply system according to claim 2, characterized in that, The oil scraper (1) has a support (6) at its rear end, and the support (6) has a through hole (7) for the oil supply pipe (3) to pass through.
4. The gear ring linkage grease supply system according to claim 3, characterized in that, The counting sensor (4) is electrically connected to the external control system and transmits the detected pulse signal to the control system. The control system controls the timing of grease supply to the oil supply pipe (3) based on the pulse signal count.
5. The gear ring linkage grease supply system according to claim 4, characterized in that, There are two oil outlets (2) and two oil supply pipes (3). The counting sensor (4) uses a proximity switch D1. The control system includes a lubrication controller U1. The input end of the lubrication controller U1 is electrically connected to the proximity switch D1. The output end of the lubrication controller U1 controls the first lubrication control relay K1 and the second lubrication control relay K2. The first lubrication control relay K1 and the second lubrication control relay K2 are used to supply power to the oil supply valve on the oil supply pipe (3).
6. The gear ring linkage grease supply system according to claim 5, characterized in that, The lubrication controller U1 is also connected to a grease pressure and supply pulse control circuit.
7. The gear ring linkage grease supply system according to claim 6, characterized in that, The grease pressure and supply pulse control circuit includes a clock generator U3 and a supply pressure transformer T1 to control the supply pulse frequency and supply pressure respectively.
8. The gear ring linkage grease supply system according to claim 7, characterized in that, The clock generator U3 uses a 555 timer chip. Resistors R1 and R2 in the multi-position adjustable potentiometer R5 are connected in series and form an oscillation frequency input circuit with C6. The trigger TRIG at pin 2 and the threshold THERS at pin 6 of the clock generator U3 are connected to the intermediate node between R2 and C6. Multiple resistor positions of the multi-position adjustable potentiometer R5 are connected to the normally open contacts of multiple grease pulse frequency level relays. The coils of the grease pulse frequency level relays are controlled by the output terminal of the lubrication controller U1. The other end of the normally open contacts of the multiple grease pulse frequency level relays is electrically connected to the acquisition and discharge DISCH at pin 7 of the clock generator U3. The output OUT at pin 3 is connected to the gate of MOSFET Q1. The other two ends of MOSFET Q1 are connected to the ground wire and the primary coil of the supply pressure transformer T1, respectively. The secondary coil of the supply pressure transformer T1 is connected to the oil pump.
9. The gear ring linkage grease supply system according to claim 8, characterized in that, The secondary coil of the supply pressure transformer T1 is provided with multiple transformation ratio nodes, which are respectively connected to the normally open contacts of multiple supply pressure level relays. The other ends of the normally open contacts of the multiple supply pressure level relays are connected in parallel and electrically connected to the positive terminal of the oil supply pump. The negative terminal of the secondary coil of the supply pressure transformer T1 is electrically connected to the negative terminal of the oil supply pump. The coil of the supply pressure level relay is controlled by the lubrication pressure level signal output from the lubrication controller U1.
10. The gear ring linkage grease supply system according to claim 9, characterized in that, The grease pulse frequency level relay consists of three relays: K7, K8, and K9. The normally open contact of K7 is connected to the midpoint of resistor R1, which is pin 2 of the multi-position adjustable potentiometer R5. The normally open contact of K8 is connected to the midpoint of resistors R1 and R2, which is pin 1 of the multi-position adjustable potentiometer R5. The normally open contact of K9 is connected to the midpoint of resistor R2, which is pin 4 of the multi-position adjustable potentiometer R5. There are two pressure level relays, namely K5 and K6.