High-reliability lubricating oil device for planetary gear speed regulating system

Abstract

The utility model discloses a high-reliability lubricating oil device for a planetary gear speed regulating system, and belongs to the technical field of planetary hydraulic speed regulating system lubrication. The planetary hydraulic speed regulation lubricating oil device solves the technical problems that an existing lubricating oil device is not compact enough in structure and unstable in oil supply pressure due to the structure of the existing lubricating oil device, the working oil standby oil supply pump and the working oil main oil supply pump are connected in parallel, and an oil supply port of the oil way duplex filter is connected with a working oil inlet of the planetary hydraulic speed regulation device. A working oil return port of the planetary hydraulic speed regulation device is connected with an oil inlet of the working oil way water cooler; an oil inlet of the standby lubricating oil supply pump is connected with the main lubricating oil supply pump in parallel, an oil supply port of the lubricating oil way water cooler is connected with an oil inlet of the lubricating oil way duplex filter, and an oil supply port of the lubricating oil way duplex filter is connected with a lubricating oil inlet of the planetary hydraulic speed regulation device. And a lubricating oil return port of the planetary hydraulic speed regulation device is connected with an oil inlet of the lubricating oil return pump. And the oil supply pressure is stable. The lubricating device is used for lubricating the planetary hydraulic speed regulating system.

Description

Technical Field

[0001] The utility model relates to a highly reliable lubricating oil device for a planetary gear speed regulation system, belonging to the technical field of lubrication of a planetary hydraulic speed regulation system. Background Technique

[0002] The planetary hydraulic speed regulation device is composed of an adjustable hydraulic torque converter and a differential-stage planetary gear drive. The oil supply requirements of the planetary hydraulic speed regulation device are divided into two categories: working oil and lubricating oil. Its working characteristics are that the rotational speed and torque at the input end are basically constant, and the output rotational speed and output torque can be automatically and continuously adjusted and changed according to the load size of the driven working machine. Therefore, it has excellent characteristics such as automatic adaptability, stepless speed change and torque conversion functions, and no mechanical wear. The key to the smooth operation of the planetary hydraulic speed regulation device is to require a corresponding smooth and reliable lubricating oil device. At present, the structure of the lubricating oil device of the planetary hydraulic speed regulation system is not compact enough, and the oil supply pressure is not stable and reliable.

[0003] In summary, due to its own structural reasons, the existing lubricating oil device has technical problems of insufficiently compact structure and unstable oil supply pressure. Content of the Utility Model

[0004] The utility model is to solve the technical problems of insufficiently compact structure and unstable oil supply pressure existing in the existing lubricating oil device due to its own structural reasons, and further provides a highly reliable lubricating oil device for a planetary gear speed regulation system.

[0005] The technical solution of the utility model is a highly reliable lubricating oil device for a planetary gear speed regulation system, including a planetary hydraulic speed regulation device, a working oil circuit and a lubricating oil circuit;

[0006] The working oil circuit includes a working oil tank, a standby working oil supply pump, a main working oil supply pump, a working oil circuit water cooler, and a double-filter for the working oil circuit. The standby working oil supply pump and the main working oil supply pump are in parallel. The oil supply port of the working oil tank is respectively connected to the oil inlet of the standby working oil supply pump and the oil inlet of the main working oil supply pump. The oil supply ports of the standby working oil supply pump and the main working oil supply pump are both connected to the oil inlet of the double-filter for the working oil circuit. The oil supply port of the double-filter for the oil circuit is connected to the working oil inlet of the planetary hydraulic speed regulation device. The working oil return port of the planetary hydraulic speed regulation device is connected to the oil inlet of the working oil circuit water cooler. The oil supply port of the working oil circuit water cooler is connected to the oil inlet of the working oil tank;

[0007] The lubricating oil circuit includes a lubricating oil tank, a standby lubricating oil supply pump, a main lubricating oil supply pump, a water cooler for the lubricating oil circuit, a double-filter for the lubricating oil circuit, and a lubricating oil return pump. The inlet of the standby lubricating oil supply pump is in parallel with the inlet of the main lubricating oil supply pump. The oil supply port of the lubricating oil tank is respectively connected to the inlet of the standby lubricating oil supply pump and the inlet of the main lubricating oil supply pump. The oil supply ports of the standby lubricating oil supply pump and the main lubricating oil supply pump are both connected to the inlet of the water cooler for the lubricating oil circuit. The oil supply port of the water cooler for the lubricating oil circuit is connected to the inlet of the double-filter for the lubricating oil circuit. The oil supply port of the double-filter for the lubricating oil circuit is connected to the lubricating oil inlet of the planetary hydraulic speed regulating device. The lubricating oil return port of the planetary hydraulic speed regulating device is connected to the inlet of the lubricating oil return pump. The oil supply port of the lubricating oil return pump is connected to the inlet of the lubricating oil tank.

[0008] As another improvement of the present utility model, it further includes a high-level oil tank. The oil supply port of the double-filter for the lubricating oil circuit is connected to the inlet of the high-level oil tank, and the oil supply port of the high-level oil tank is connected to the inlet of the lubricating oil tank.

[0009] As another improvement of the present utility model, it further includes a compensation connecting pipe. The working oil tank and the lubricating oil tank are connected through the compensation connecting pipe.

[0010] As another improvement of the present utility model, electric heaters are installed in both the working oil tank and the lubricating oil tank.

[0011] As another improvement of the present utility model, oil mist separators are installed in both the working oil tank and the lubricating oil tank.

[0012] As another improvement of the present utility model, a smoke exhaust port is provided on the planetary hydraulic speed regulating device.

[0013] As another improvement of the present utility model, sewage discharge ports are provided on both the working oil tank and the lubricating oil tank.

[0014] As another improvement of the present utility model, the double-filter for the working oil circuit includes an inlet valve and an oil supply valve, and both the inlet valve and the oil supply valve adopt three-way ball valves.

[0015] As another improvement of the present utility model, the double-filter for the lubricating oil circuit includes an inlet valve and an oil supply valve, and both the inlet valve and the oil supply valve adopt three-way ball valves.

[0016] The beneficial effects of the present utility model:

[0017] 1. A highly reliable lubricating oil device for a planetary gear speed regulating system of the present utility model consists of two parts: a working oil circuit and a lubricating oil circuit. Among them, the working oil circuit supplies oil to the adjustable hydraulic torque converter, and the lubricating oil circuit lubricates and cools the planetary transmission gears and bearing parts. The working oil tank and the lubricating oil tank are both supplied with oil in a parallel form of one main pump and one standby pump to ensure the reliability of oil supply.

[0018] 2. The water cooler is arranged in the working oil return circuit of the present utility model to enable the hydraulic torque converter with planetary hydraulic speed regulation to operate under the condition of relatively high working oil temperature, and its energy conversion efficiency is high.

[0019] 3. The water cooler is arranged in the lubricating oil supply circuit of the present utility model to enable the planetary hydraulic speed regulation device to lubricate and cool each planetary transmission gear and bearing part with low-temperature lubricating oil.

[0020] 4. The lubricating oil tank and the working oil tank of the present utility model are connected through a compensation connecting pipe, and the ball valve on the compensation connecting pipe can be adjusted during the working process of the system to maintain the liquid levels of the two tanks stable.

[0021] 5. The high-position oil tank is a power-off safety protection measure for the entire lubricating oil device. If a power failure of the oil pump occurs in the unit, the high-position oil tank will maintain lubrication for the planetary hydraulic speed regulation system for a period of time to provide lubricating and cooling protection for the emergency shutdown of the system. The lubricating oil device of the present utility model uses a double-filter, which has the characteristics of compact structure, stable oil supply pressure and high reliability. Brief Description of the Drawings

[0022] Figure 1 It is the schematic diagram of a highly reliable lubricating oil device for a planetary gear speed regulation system of the present utility model. Detailed Embodiment

[0023] Detailed Embodiment 1: In combination with Figure 1 This embodiment is described. A highly reliable lubricating oil device for a planetary gear speed regulation system in this embodiment includes a planetary hydraulic speed regulation device 14, a working oil circuit and a lubricating oil circuit;

[0024] The working oil circuit includes a working oil tank 2, a standby working oil supply pump 5, a main working oil supply pump 6, a water cooler 7 for the working oil circuit and a double-filter 9 for the working oil circuit. The standby working oil supply pump 5 and the main working oil supply pump 6 are connected in parallel. The oil supply port of the working oil tank 2 is respectively connected to the oil inlet of the standby working oil supply pump 5 and the oil inlet of the main working oil supply pump 6. The oil supply ports of the standby working oil supply pump 5 and the main working oil supply pump 6 are both connected to the oil inlet of the double-filter 9 for the working oil circuit. The double-filter 9 for the working oil circuit filters the working oil. The oil supply port of the double-filter 9 for the working oil circuit is connected to the working oil inlet of the planetary hydraulic speed regulation device 14. The working oil return port of the planetary hydraulic speed regulation device 14 is connected to the oil inlet of the water cooler 7 for the working oil circuit. The oil supply port of the water cooler 7 for the working oil circuit is connected to the oil inlet of the working oil tank 2;

[0025] The lubricating oil circuit includes a lubricating oil tank 1, a standby lubricating oil supply pump 3, a main lubricating oil supply pump 4, a water cooler 8 for the lubricating oil circuit, a double-filter 10 for the lubricating oil circuit, and a lubricating oil return pump 11. The inlet of the standby lubricating oil supply pump 3 is in parallel with the inlet of the main lubricating oil supply pump 4. The oil supply port of the lubricating oil tank 1 is respectively connected to the inlet of the standby lubricating oil supply pump 3 and the inlet of the main lubricating oil supply pump 4. The oil supply ports of the standby lubricating oil supply pump 3 and the main lubricating oil supply pump 4 are both connected to the inlet of the water cooler 8 for the lubricating oil circuit. The oil supply port of the water cooler 8 for the lubricating oil circuit is connected to the inlet of the double-filter 10 for the lubricating oil circuit. The double-filter 10 for the lubricating oil circuit filters the lubricating oil. The oil supply port of the double-filter 10 for the lubricating oil circuit is connected to the lubricating oil inlet of the planetary hydraulic speed regulating device 14. The lubricating oil return port of the planetary hydraulic speed regulating device 14 is connected to the inlet of the lubricating oil return pump 11. The oil supply port of the lubricating oil return pump 11 is connected to the inlet of the lubricating oil tank 1.

[0026] Among them, the working oil circuit supplies oil to the adjustable hydrodynamic torque converter, and the lubricating oil circuit lubricates and cools the planetary transmission gears and bearing parts. Both the working oil tank and the lubricating oil tank supply oil in a parallel form of one main pump and one standby pump to ensure the reliability of oil supply. The water cooler is set in the working return oil circuit to enable the hydrodynamic torque converter of the planetary hydraulic speed regulation to work under the condition of relatively high working oil temperature, and its energy conversion efficiency is high. The water cooler is set in the lubricating oil supply oil circuit to enable the planetary hydraulic speed regulating device 14 to lubricate and cool the planetary transmission gears and bearing parts with low-temperature lubricating oil. The double-filter is used in the lubricating oil device of this embodiment to make the structure of this embodiment compact and adapt to more working environments.

[0027] Specific Embodiment 2: Figure 1 This embodiment will be described in combination with. The difference between this embodiment and Specific Embodiment 1 is that this embodiment further includes a high-level oil tank 12. The oil supply port of the double-filter 10 for the lubricating oil circuit is connected to the inlet of the high-level oil tank 12. The oil supply port of the high-level oil tank 12 is connected to the inlet of the lubricating oil tank 1. Under normal working conditions, the main lubricating oil pump supplies oil, and the high-level oil tank will be slowly filled. After reaching the highest limit point, the excess oil will return to the lubricating oil tank. If the lubricating oil station is in normal working condition, the oil in the high-level oil tank will automatically return to the lubricating oil tank by gravity after shutdown. If the lubricating oil station fails to maintain the lubricating oil supply demand, the high-level oil tank will continue to maintain the lubricating oil demand for the planetary hydraulic speed regulation system by gravity for a period of time to provide lubrication and cooling protection for the shutdown of the entire speed regulation system. Other components and connection methods are the same as those in Specific Embodiment 1.

[0028] Specific Embodiment 3: Figure 1Regarding this embodiment, the difference between this embodiment and the first specific embodiment is that this embodiment further includes a compensation connecting pipe 13, and the working oil tank 2 and the lubricating oil tank 1 are connected through the compensation connecting pipe 13. The lubricating oil tank and the working oil tank are connected through the compensation connecting pipe. During the operation of the system, the liquid levels of the two tanks can be maintained stable by adjusting the ball valve on the compensation connecting pipe, and then the ball valve on the compensation connecting pipe is closed after the system operation is completed to ensure the separated state of the lubricating oil tank and the working oil tank after shutdown. Other components and connection methods are the same as those in the first or second specific embodiment.

[0029] Specific Embodiment Four: Combining Figure 1 Regarding this embodiment, the difference between this embodiment and the first specific embodiment is that electric heaters are installed in both the working oil tank 2 and the lubricating oil tank 1. Its function is to heat the lubricating oil and the working oil to meet the working requirements when the external working condition environment temperature is relatively low. Other components and connection methods are the same as any one of the first to third specific embodiments.

[0030] Specific Embodiment Five: Combining Figure 1 Regarding this embodiment, the difference between this embodiment and the first specific embodiment is that oil mist separators are installed in both the working oil tank 2 and the lubricating oil tank 1. Its function is to filter and separate the oil mist in the oil fume. Other components and connection methods are the same as any one of the first to fourth specific embodiments.

[0031] Specific Embodiment Six: Combining Figure 1 Regarding this embodiment, the difference between this embodiment and the first specific embodiment is that a smoke exhaust port is provided on the planetary hydraulic speed regulating device 14. It is used to discharge the oil mist. Other components and connection methods are the same as any one of the first to fifth specific embodiments.

[0032] Specific Embodiment Seven: Combining Figure 1 Regarding this embodiment, the difference between this embodiment and the first specific embodiment is that sewage discharge ports are provided on both the working oil tank 2 and the lubricating oil tank 1. It is convenient for cleaning and replacing the oil products in the working oil tank 2 and the lubricating oil tank 1. Other components and connection methods are the same as any one of the first to sixth specific embodiments.

[0033] Specific Embodiment Eight: Combining Figure 1 Regarding this embodiment, the difference between this embodiment and the first specific embodiment is that the working oil circuit double filter 9 includes an oil inlet valve and an oil supply valve, and both the oil inlet valve and the oil supply valve adopt three-way ball valves. Using two three-way ball valves does not require the system to stop during the process of cleaning and replacing the filter element, with simple operation and convenient maintenance. Other components and connection methods are the same as any one of the first to seventh specific embodiments.

[0034] Specific Embodiment Nine: Combining Figure 1To describe this embodiment, the difference between this embodiment and the first specific embodiment is that the lubricating oil circuit double filter 10 includes an oil inlet valve and an oil supply valve, and both the oil inlet valve and the oil supply valve are three-way ball valves. Using two three-way ball valves eliminates the need to stop the vehicle during the process of cleaning and replacing the filter element, with simple operation and convenient maintenance. The other components and connection methods are the same as any one of the first to eighth specific embodiments.

[0035] Combined with Figure 1 To describe the working principle of the present utility model:

[0036] The highly reliable lubricating oil device for the planetary hydraulic speed regulation system of the present utility model includes two parts: a working oil circuit and a lubricating oil circuit. Working oil circuit: Above the working oil tank 2, there are a standby working oil supply pump 5 and a main working oil supply pump 6 connected in parallel. The one-main-one-standby oil supply form ensures that when the main pump 6 fails, the standby pump 5 can be started as a substitute to maintain the oil supply demand of the working oil. The two pumps are connected upward to a working oil circuit double filter 9 to filter the working oil. The working oil circuit double filter 9 is connected upward to the working oil inlet of the planetary hydraulic speed regulation device 14 to supply oil to the torque converter. The working oil return port of the planetary hydraulic speed regulation device 14 is connected downward to the working oil cooler 7, and finally the working oil returns to the working oil tank to complete the circulation of the entire working oil circuit. Lubricating oil circuit: Above the lubricating oil tank 1, there are a standby lubricating oil supply pump 3 and a main lubricating oil supply pump 4 connected in parallel. The one-main-one-standby oil supply form ensures that when the main pump 3 fails, the standby pump 4 can be started as a substitute to maintain the oil supply demand of the working oil. The two pumps are connected upward to a lubricating oil cooler 8 to ensure that the supply temperature of the lubricating oil is relatively low, providing a better lubricating and cooling state for the planetary transmission gears and bearing parts. The cooler 8 is connected upward to a lubricating oil circuit double filter 10 to filter the lubricating oil. The lubricating oil circuit double filter 10 is connected upward to the lubricating oil inlet of the planetary hydraulic speed regulation device 14 for lubricating and cooling each mechanical part. The lubricating oil return port of the planetary hydraulic speed regulation device 14 is connected downward to a lubricating oil return pump 11, and finally the lubricating oil returns to the lubricating oil tank to complete the circulation of the entire lubricating oil circuit.

[0037] The above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present utility model.

Claims

1. A highly reliable lubricating oil device for a planetary gear speed regulation system, characterized in that It includes a planetary hydraulic speed regulator (14), a working oil circuit, and a lubricating oil circuit; The working oil circuit includes a working oil tank (2), a standby working oil supply pump (5), a main working oil supply pump (6), a working oil circuit water cooler (7), and a duplex filter (9) for the working oil circuit. The standby working oil supply pump (5) and the main working oil supply pump (6) are in parallel. The oil supply port of the working oil tank (2) is respectively connected to the inlet of the standby working oil supply pump (5) and the inlet of the main working oil supply pump (6). The oil supply ports of the standby working oil supply pump (5) and the main working oil supply pump (6) are both connected to the inlet of the duplex filter (9) for the working oil circuit. The oil supply port of the duplex filter (9) for the working oil circuit is connected to the working oil inlet of the planetary hydraulic speed regulator (14). The working oil return port of the planetary hydraulic speed regulator (14) is connected to the inlet of the working oil circuit water cooler (7). The oil supply port of the working oil circuit water cooler (7) is connected to the inlet of the working oil tank (2); The lubricating oil circuit includes a lubricating oil tank (1), a standby lubricating oil supply pump (3), a main lubricating oil supply pump (4), a lubricating oil circuit water cooler (8), a duplex filter (10) for the lubricating oil circuit, and a lubricating oil return pump (11). The inlet of the standby lubricating oil supply pump (3) and the main lubricating oil supply pump (4) are in parallel. The oil supply port of the lubricating oil tank (1) is respectively connected to the inlet of the standby lubricating oil supply pump (3) and the inlet of the main lubricating oil supply pump (4). The oil supply ports of the standby lubricating oil supply pump (3) and the main lubricating oil supply pump (4) are both connected to the inlet of the lubricating oil circuit water cooler (8). The oil supply port of the lubricating oil circuit water cooler (8) is connected to the inlet of the duplex filter (10) for the lubricating oil circuit. The oil supply port of the duplex filter (10) for the lubricating oil circuit is connected to the lubricating oil inlet of the planetary hydraulic speed regulator (14). The lubricating oil return port of the planetary hydraulic speed regulator (14) is connected to the inlet of the lubricating oil return pump (11). The oil supply port of the lubricating oil return pump (11) is connected to the inlet of the lubricating oil tank (1).

2. The high-reliability lubricating oil device for a planetary gear speed regulation system according to claim 1, characterized in that It further includes a high-level oil tank (12). The oil supply port of the duplex filter (10) for the lubricating oil circuit is connected to the inlet of the high-level oil tank (12). The oil supply port of the high-level oil tank (12) is connected to the inlet of the lubricating oil tank (1).

3. A highly reliable lubricating oil device for a planetary gear speed regulation system according to claim 1, characterized in that It further includes a compensating connecting pipe (13). The working oil tank (2) and the lubricating oil tank (1) are connected through the compensating connecting pipe (13).

4. A highly reliable lubricating oil device for a planetary gear speed regulation system according to claim 1, characterized in that, Electric heaters are installed in both the working oil tank (2) and the lubricating oil tank (1).

5. The highly reliable lubricating oil device for a planetary gear speed regulation system according to claim 1, wherein Oil mist separators are installed in both the working oil tank (2) and the lubricating oil tank (1).

6. A highly reliable lubricating oil device for a planetary gear speed regulation system according to claim 5, characterized in that, A smoke exhaust port is provided on the planetary hydraulic speed regulator (14).

7. A highly reliable lubricating oil device for a planetary gear speed regulation system according to claim 1, characterized in that, Drain ports are provided on both the working oil tank (2) and the lubricating oil tank (1).

8. A highly reliable lubricating oil device for a planetary gear speed regulation system according to any one of claims 1 to 7, characterized in that, The duplex filter (9) for the working oil circuit includes an inlet valve and an oil supply valve. Both the inlet valve and the oil supply valve are three-way ball valves.

9. A highly reliable lubricating oil device for a planetary gear speed regulation system according to any one of claims 1 to 7, characterized in that, The duplex filter (10) for the lubricating oil circuit includes an inlet valve and an oil supply valve. Both the inlet valve and the oil supply valve are three-way ball valves.

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