A Lubricating Oil Flow Control Method and System for a Gear Device

Abstract

The present invention provides a method and system for controlling the lubricating oil flow rate of a gear device. The method includes: collecting state feedback signals of the gear device, where the state feedback signals at least include one of the following: temperature signal, liquid level state signal, current signal; adjusting the opening degree of the valve device according to the state feedback signals, and completing the control of the lubricating oil flow rate of the gear device by adjusting the opening degree of the valve device. The method for controlling the lubricating oil flow rate of the gear device in the present invention adjusts the opening degree of the valve device through the collected state feedback signals, and completes the automatic control of the lubricating oil flow rate of the gear device by the control module. By automatically controlling the lubricating oil flow rate of the gear device, the purpose of adapting to the dynamic change of the lubricating oil flow rate of the gear device is achieved, and the situation of unreasonable control of the lubricating oil flow rate is avoided.

Description

Technical Field

[0001] The present invention relates to the field of electromechanical technology, and in particular to a method and system for controlling the flow rate of lubricating oil of a gear device. Background Art

[0002] Gear equipment works in harsh environments such as high speed and heavy load for a long time, and is required to have characteristics such as high stability, high reliability and compact structure. Due to the complex structure of the gear equipment transmission system and the large number of transmission elements, once the gears and bearings in the gear equipment fail, it will directly affect the normal operation of the equipment. In severe cases, it may even cause the entire mechanical system to fail, resulting in huge property losses and personal injuries. The main function of the gear equipment lubrication system is to provide lubrication for the bearings and gears in the gear equipment, reduce the friction and wear of the transmission elements, and remove the heat generated during the operation of the gear equipment through heat exchange to reduce the working surface temperature. Therefore, the lubrication system is an important guarantee for the stable operation of the gear equipment.

[0003] At present, the lubricating oil flow of gear equipment is mainly controlled manually to achieve the purpose of controlling the lubrication effect of gear equipment. This lubricating oil control method is a traditional open-loop control idea, which is inconvenient to operate and cannot adapt to the requirements of dynamic changes in lubricating oil flow. The degree of automation and automation is very low. Once the nozzle or bearing oil circuit design is unreasonable and the lubricating oil flow control is unreasonable, high-speed and heavy-loaded gear equipment may suffer from various failure forms such as tooth surface wear, tooth surface bonding, bearing wear, bearing bonding, and bearing burning due to excessive temperature. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides a gear equipment lubricating oil flow control method and system to solve the problem that the prior art gear equipment lubricating oil flow control method is inconvenient and cannot adapt to the dynamic changes of lubricating oil flow.

[0005] The present invention provides a method for controlling the flow rate of lubricating oil in a gear device, comprising:

[0006] Collecting a state feedback signal of the gear device, wherein the state feedback signal includes at least one of the following: a temperature signal, a liquid level state signal, and a current signal;

[0007] The opening degree of the valve device is adjusted according to the state feedback signal, and the flow rate of the lubricating oil of the gear equipment is controlled by adjusting the opening degree of the valve device.

[0008] Optionally, the step of adjusting the opening degree of the valve device according to the state feedback signal includes:

[0009] Pre-set the initial opening degree of the valve device;

[0010] Based on the temperature signal, determine whether the temperature of the gear device is greater than the upper limit of the preset temperature threshold. If the temperature of the gear device is not greater than the temperature threshold upper limit, adjust the opening degree of the valve device to the initial opening degree and output a corresponding command signal to complete the adjustment of the opening degree of the valve device.

[0011] Optionally, the step of adjusting the opening degree of the valve device according to the status feedback signal further includes: collecting the opening degree signal of the valve device;

[0012] If the temperature of the gear device is greater than the temperature threshold upper limit, then based on the opening degree signal, determine whether the current opening degree of the valve device is equal to the initial opening degree. If the current opening degree is not equal to the initial opening degree, it is determined that the valve device is malfunctioning and an alarm is issued; if the current opening degree is equal to the initial opening degree, it is determined that the valve device is operating normally.

[0013] Optionally, after the step of determining that the valve device is operating normally, it includes:

[0014] Based on the liquid level status signal, determine whether the normally closed switch in the liquid level detection module is triggered. If the normally closed switch is triggered, it is determined that the liquid level of the gear device is low;

[0015] If the normally closed switch is not triggered, then based on the liquid level status signal, determine whether the normally open switch in the liquid level detection module is triggered. If the normally open switch in the liquid level detection module is not triggered, it is determined that the lubrication of the gear device is abnormal and an alarm is issued; if the normally open switch in the liquid level detection module is triggered, it is determined that the liquid level of the gear device is high, where the liquid level detection module is provided with a normally open switch and a normally closed switch.

[0016] Optionally, after the step of determining that the liquid level of the gear device is low, it includes:

[0017] Collect the pressure signal and flow signal of the valve device;

[0018] Based on the current signal, determine whether the feedback current of the main drive motor shows an upward trend;

[0019] Based on the pressure signal, determine whether the pressure value of the pressure switch is less than the preset lower limit of the pressure;

[0020] Based on the flow signal, determine whether the flow value of the flow switch is less than the preset lower limit of the flow;

[0021] If the feedback current shows an upward trend, the pressure value is less than the lower limit of the pressure, and the flow value is less than the lower limit of the flow, it is determined that the lubricating oil flow of the gear device is insufficient, and the opening degree of the valve device is adjusted to increase by a preset scale to complete the adjustment of the opening degree of the valve device.

[0022] Optionally, after the step of determining that the liquid level of the gear device is low, the following steps are further included:

[0023] If any of the following situations occur: the feedback current of the main drive motor does not show an upward trend, the pressure value of the pressure switch is not less than the lower pressure limit value, the flow value of the flow switch is not less than the lower flow limit value, it is determined that the lubrication of the gear device is abnormal and an alarm is given.

[0024] Optionally, after the step of determining that the liquid level of the gear device is high, the following steps are included:

[0025] According to the current signal, determine whether the feedback current of the main drive motor shows an upward trend;

[0026] According to the pressure signal, determine whether the pressure value of the pressure switch is greater than the preset upper pressure limit value;

[0027] According to the flow signal, determine whether the flow value of the flow switch is greater than the preset upper flow limit value;

[0028] If the feedback current of the main drive motor shows an upward trend, and the pressure value of the pressure switch is greater than the upper pressure limit value, and at the same time, the flow value of the flow switch is greater than the upper flow limit value, it is determined that the lubricating oil flow of the gear device is too large, and the opening degree of the valve device is adjusted to decrease by a preset scale, and the adjustment of the opening degree of the valve device is completed.

[0029] Optionally, after the step of determining that the liquid level of the gear device is high, the following steps are further included:

[0030] If any of the following situations occur: the feedback current of the main drive motor does not show an upward trend, the pressure value of the pressure switch is not greater than the upper pressure limit value, the flow value of the flow switch is not greater than the upper flow limit value, it is determined that the lubrication of the gear device is abnormal and an alarm is given.

[0031] Optionally, receive the stop signal of the external device. If the stop instruction sent by the external device is received, execute the stop instruction and end the adjustment of the opening degree of the valve device; if the stop instruction sent by the external device is not received, continue to adjust the opening degree of the valve device according to the collected signal.

[0032] The present invention further provides a lubricating oil flow control system for a gear device, including:

[0033] A gear device;

[0034] A valve device for adjusting the opening degree to control the lubricating oil flow of the gear device;

[0035] A lubricating oil pumping station for providing lubricating oil;

[0036] A control module, configured to collect status feedback signals of a gear device and adjust the opening degree of the valve device according to the status feedback signals, and control the lubricating oil flow rate of the gear device by adjusting the opening degree of the valve device; the status feedback signals include at least one of the following: temperature signal, liquid level status signal, current signal;

[0037] The gear device, the valve device and the lubricating oil pumping station are connected in sequence to form a closed loop, and the valve device is signal-connected to the control module.

[0038] Advantages of the present invention: The method for controlling the lubricating oil flow rate of the gear device in the present invention adjusts the opening degree of the valve device through the collected status feedback signals, and completes the automatic control of the lubricating oil flow rate of the gear device through the adjustment of the opening degree of the valve device by the control module. By automatically controlling the lubricating oil flow rate of the gear device, the purpose of adapting to the dynamic change of the lubricating oil flow rate of the gear device is achieved, and the situation of unreasonable control of the lubricating oil flow rate is avoided. Description of the Drawings

[0039] Figure 1 is a schematic flow chart of the method for controlling the lubricating oil flow rate of the gear device in an embodiment of the present invention Figure 1 ;

[0040] Figure 2 is a schematic flow chart of the method for controlling the lubricating oil flow rate of the gear device in an embodiment of the present invention Figure 2 ;

[0041] Figure 3 is a schematic structural diagram of the automatic lubricating oil flow rate control system in an embodiment of the present invention.

[0042] Reference Signs in the Drawings:

[0043] 01 Gear device;

[0044] 02 Valve device;

[0045] 03 Lubricating oil pumping station;

[0046] 04 Control module;

[0047] 05 Liquid level detection module;

[0048] 06 Main drive motor;

[0049] 07 Current mutual inductance module;

[0050] 08 Electric actuator;

[0051] 09 Temperature switch;

[0052] 10 Pressure switch;

[0053] 11 Flow switch;

[0054] 12 Fuel supply pipe;

[0055] 13 Oil return pipe. Specific embodiments

[0056] The following specific examples illustrate the embodiments of the present invention. Those skilled in the art can easily understand the other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0057] It should be noted that the diagrams provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner. Therefore, only the components related to the present invention are shown in the diagrams, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and ratio of each component in actual implementation can be arbitrarily changed, and the component layout type may also be more complex.

[0058] As Figure 1 shown, the method for controlling the lubricating oil flow rate of the gear device 01 in this embodiment includes:

[0059] Collecting the status feedback signal of the gear device 01, where the status feedback signal includes at least one of the following: temperature signal, liquid level status signal, current signal;

[0060] Adjust the opening degree of the valve device 02 according to the state feedback signal, and complete the control of the lubricating oil flow of the gear device 01 by adjusting the opening degree of the valve device 02. By collecting the temperature signal, liquid level state signal, and current signal of the gear device 01, respectively judge the temperature, liquid level height, and current state of the gear device 01, and adjust the opening degree of the valve device 02 according to the judgment result, realizing the automatic control of the lubricating oil flow of the gear device. Through the automatic control of the lubricating oil flow of the gear device, it effectively avoids the unreasonable control of the lubricating oil flow of the gear device, which may lead to wear or gluing of the gearbox, improving the safety reliability and service life of the gear device. The operation is convenient. By collecting the temperature signal, liquid level state signal, and current signal of the gear device 01, the accuracy of the control of the lubricating oil flow of the gear device is improved. For example: by collecting the temperature signal of the gear device 01, it provides a data basis for judging whether the temperature of the gear device 01 is normal, and judges whether the temperature of the gear device 01 is normal within the preset threshold range; by collecting the liquid level state signal of the gear device 01, it can effectively judge the liquid level height in the gear device 01, and then complete the judgment of the amount of lubricating oil in the gear device 01; by collecting the current signal, it can accurately judge whether the gear device 01 is in the operating state, such as judging whether the feedback current is in an upward trend according to the current signal. If the feedback current is in an upward trend, it is determined that the gear device 01 is in the operating state.

[0061] In some embodiments, the step of adjusting the opening degree of the valve device 02 according to the state feedback signal includes:

[0062] Preset the initial opening degree of the valve device 02 as Xv_set = Xv_init;

[0063] According to the temperature signal, judge whether the temperature of the gear device 01 is greater than the preset upper temperature threshold T_max. If the temperature of the gear device 01 is not greater than the temperature threshold upper limit T_max, adjust the opening degree of the valve device 02 to the initial opening degree, and output the corresponding command signal to complete the adjustment of the opening degree of the valve device 02. By collecting the temperature signal of the gear device 0101 and processing the temperature signal, ensure that the temperature of the gear device is controlled within a reasonable range.

[0064] In some embodiments, the step of adjusting the opening degree of the valve device 02 according to the state feedback signal further includes: collecting the opening degree signal of the valve device 02;

[0065] If the temperature of the gear device 01 is greater than the upper limit T_max of the temperature threshold, then according to the opening degree signal, it is judged whether the current opening degree Xv_fb of the valve device 02 is equal to the initial opening degree Xv_set. If the current opening degree Xv_fb is not equal to the initial opening degree Xv_set, it is determined that the valve device 02 is malfunctioning and an alarm is issued; if the current opening degree Xv_fb is equal to the initial opening degree Xv_set, it is determined that the valve device 02 is operating normally, and then the opening degree of the valve device 02 is adjusted, Xv_set = Xv_set. By judging the current opening degree of the valve device 02, it is possible to determine whether the valve device 02 is in a normal operating state.

[0066] In some embodiments, after the step of determining that the valve device 02 is operating normally, it includes:

[0067] According to the liquid level state signal, it is judged whether the normally closed switch in the liquid level detection module 05 is triggered. If the normally closed switch is triggered, it is determined that the liquid level of the gear device 01 is low;

[0068] If the normally closed switch is not triggered, then according to the liquid level state signal, it is judged whether the normally open switch in the liquid level detection module 05 is triggered. If the normally open switch in the liquid level detection module 05 is not triggered, it is determined that the lubrication of the gear device 01 is abnormal and an alarm is issued; if the normally open switch in the liquid level detection module 05 is triggered, it is determined that the liquid level of the gear device 01 is high. Among them, the liquid level detection module 05 is provided with a normally open switch and a normally closed switch. For example: the liquid level detection module 05 sets SL.a as the normally closed switch, and the signal transmission indicates that the liquid level of the gear device is low and the lubricating oil amount in the gear device 01 is insufficient. Set SL.b as the normally open switch, and the signal transmission indicates that the liquid level of the gear device is high and the lubricating oil amount of the gear device is too much. The liquid level signal is fed back to the embedded dedicated controller through the switch quantity to monitor the lubricating oil amount in the gear device in real time. If SL.a = 0, it is determined that the liquid level of the gear device is low and an alarm is issued.

[0069] In some embodiments, after the step of determining that the liquid level of the gear device 01 is low, it includes:

[0070] Collect the pressure signal and flow signal of the valve device 02;

[0071] According to the current signal, it is judged whether the feedback current of the main drive motor 06 shows an upward trend;

[0072] According to the pressure signal, it is judged whether the pressure value of the pressure switch 10 is less than the preset lower limit value P_min of the pressure;

[0073] According to the flow signal, it is judged whether the flow value of the flow switch 11 is less than the preset lower limit value Q_min of the flow;

[0074] If the feedback current shows an upward trend, the pressure value is less than the lower pressure limit value P_min, and the flow value is less than the lower flow limit value Q_min, it is determined that the lubricating oil flow of the gear device 01 is insufficient, and the opening degree of the valve device 02 is adjusted to increase by a preset scale, completing the adjustment of the opening degree of the valve device 02.

[0075] In some embodiments, after the step of determining that the liquid level of the gear device 01 is low, it further includes:

[0076] If any of the following situations occur: the feedback current of the main drive motor 06 does not show an upward trend, the pressure value of the pressure switch 10 is not less than the lower pressure limit value P_min, and the flow value of the flow switch 11 is not less than the lower flow limit value Q_min, it is determined that the lubrication of the gear device 01 is abnormal and an alarm is issued. By judging whether the feedback current of the main drive motor 06 shows an upward trend, it is possible to determine whether the gear device 01 is in a normal working state.

[0077] In some embodiments, after the step of determining that the liquid level of the gear device 01 is high, it includes:

[0078] According to the current signal, judge whether the feedback current of the main drive motor 06 shows an upward trend;

[0079] According to the pressure signal, judge whether the pressure value of the pressure switch 10 is greater than the preset upper pressure limit value P_max;

[0080] According to the flow signal, judge whether the flow value of the flow switch 11 is greater than the preset upper flow limit value Q_max;

[0081] If the feedback current of the main drive motor 06 shows an upward trend, the pressure value of the pressure switch 10 is greater than the upper pressure limit value P_max, and at the same time, the flow value of the flow switch 11 is greater than the upper flow limit value Q_max, it is determined that the lubricating oil flow of the gear device 01 is too large, and the opening degree of the valve device 02 is adjusted to decrease by a preset scale, completing the adjustment of the opening degree of the valve device 02.

[0082] In some embodiments, after the step of determining that the liquid level of the gear device 01 is high, it further includes:

[0083] If any of the following situations occur: the feedback current of the main drive motor 06 does not show an upward trend, the pressure value of the pressure switch 10 is not greater than the upper pressure limit value P_max, and the flow value of the flow switch 11 is not greater than the upper flow limit value Q_max, it is determined that the lubrication of the gear device 01 is abnormal and an alarm is issued.

[0084] In some embodiments, by setting the threshold ranges of each device and the switch, it is ensured that the temperature, pressure, and liquid level states corresponding to each lubricating oil flow value can fluctuate within a certain range, extending the service life of the automatic control system for lubricating oil flow.

[0085] In some embodiments, as Figure 2 shown, a shutdown signal of an external device is received. If a shutdown instruction sent by the external device is received, the shutdown instruction is executed to end the adjustment of the opening degree of the valve device 02; if a shutdown instruction sent by the external device is not received, the adjustment of the opening degree of the valve device 02 continues according to the collected signals. By means of data interaction with the external device, the processed temperature signal, liquid level state signal, current signal, etc. can be transmitted to the external device and displayed, enabling timely monitoring of the abnormal conditions of the gear device and alarming relevant personnel to troubleshoot faults to avoid accidents.

[0086] As Figure 3 shown, this embodiment also provides a lubricating oil flow control system for a gear device 01, including:

[0087] The gear device 01;

[0088] A valve device 02 for adjusting the lubricating oil amount of the gear device 01;

[0089] A lubricating oil pumping station 03 for supplying oil;

[0090] A control module 04 for adjusting the opening degree of the valve device 02 according to the status feedback signal of the gear device 01 and controlling the lubricating oil flow of the gear device 01 by adjusting the opening degree of the valve device 02; the status feedback signal includes at least one of the following: temperature signal, liquid level state signal, current signal;

[0091] The gear device 01, the valve device 02, and the lubricating oil pumping station 03 are connected in sequence to form a closed loop, and the valve device 02 is connected to the control module 04 to form a signal transmission closed loop. The control module 04 collects the status feedback signal of the gear device 01, judges whether the lubricating oil flow rate of the gear device 01 needs to be adjusted according to the status feedback signal, and sends an instruction signal according to the judgment result to complete the adjustment of the opening degree of the valve device 02. The signal transmission closed loop formed by the connection of the valve device 02 and the control module 04 is used for the collection of the opening degree signal of the valve device 02 and the transmission of the instruction signal. In this embodiment, by setting the control module 04 to be connected to the valve device 02, the control module 04 collects the status feedback signal of the gear device and sends an instruction signal according to the status feedback signal, which solves the problems of inaccurate flow control of the traditional gear device lubrication system, resulting in high failure rates of the bearings, transmission shafts, and gears of the gear device, and complex operation and maintenance. It realizes the automatic control of the lubricating oil flow rate of the gear device, improves the safety reliability and service life of the gear device.

[0092] In some embodiments, the gear device 01 can be a gearbox, etc., the valve device 02 can be an electric butterfly valve, etc., and the lubricating oil pumping station 03 can be a thin oil lubricating oil pumping station 03 or other pumping stations that can supply lubricating oil.

[0093] In some embodiments, it further includes: an oil supply pipe 12, an oil return pipe 13, a signal flow switch 11 for detecting the lubricating oil flow rate and outputting a flow rate signal, and a pressure switch 10 for detecting the real-time pressure of the oil inlet of the gear device 01 and outputting a pressure signal. The lubricating oil pumping station 03, the oil supply pipe 12, the gear device 01, and the oil return pipe 13 are connected in sequence to form a closed loop. The direction from the lubricating oil pumping station 03 to the gear device 01 is defined as the first direction. The valve device 02, the flow switch 11, and the pressure switch 10 are arranged on the oil supply pipe 12 in sequence along the first direction. By arranging the flow switch 11 and the pressure switch 10 on the oil supply pipe 12 along the first direction respectively, the oil volume in the oil supply pipe 12 after passing through the valve device 02 can be monitored in real time, and the real-time monitoring of the pressure of the oil supply pipe 12 and the oil inlet of the gear device 01 can be realized, which can ensure higher safety of the lubricating oil flow control system of the gear device 01 and more accurate adjustment of the opening degree of the valve device 02. By adjusting the opening degree of the valve device 02, the flow rate of the lubricating oil can be controlled.

[0094] In some embodiments, it further includes: a liquid level detection module for detecting the height of the lubricating oil level in the gear device and outputting a liquid level status signal. The liquid level detection module includes a normally closed switch and a normally open switch, which are sequentially arranged on one side of the liquid level detection module. The normally open switch is arranged below the normally closed switch, and the normally open switch is closer to the ground than the normally closed switch. The liquid level detection module is connected to the gear device and is in signal connection with the control module. The control module 04 collects the liquid level status signal in the liquid level detection module 05. In some embodiments, the liquid level detection module 05 can adopt a liquid level gauge. The liquid level status signal is fed back to the control module 04 through the normally closed switch or the normally open switch to monitor the lubricating oil quantity in the gear device in real time.

[0095] In some embodiments, it further includes: a main drive motor 06 and a current mutual induction module 07 for detecting the magnitude of the current and outputting a current signal. The gear device 01, the main drive motor 06, the current mutual induction module 07, and the control module 04 are sequentially connected. By collecting the current signal through the main drive motor 06 and the current mutual induction module 07, it is possible to determine whether the gear device is in a normal working state. In some embodiments, the current mutual induction module 07 can adopt a current transformer.

[0096] In some embodiments, the control module 04 includes a collection unit and a processing unit, and the collection unit is connected to the processing unit;

[0097] The processing unit includes a signal processing sub-unit for generating an instruction signal according to the collected signal;

[0098] The collection unit includes a digital input sub-unit DI for collecting the liquid level status signal, a digital output sub-unit DO for outputting a digital signal, an analog input sub-unit AI for collecting flow signals, pressure signals, temperature signals, current signals, and opening signals, and an analog output sub-unit AO for sending an instruction signal.

[0099] In some embodiments, it further includes: an electric actuator 08 for detecting the opening of the valve device 02 and outputting an opening signal, receiving the instruction signal, and adjusting the opening of the valve device 02 according to the instruction signal. The electric actuator 08 is connected to the valve device 02 and is in signal connection with the control module 04. The electric actuator 08 collects and transmits the opening signal of the valve device 02 to the control module 04, and receives the instruction signal sent by the control module 04 to adjust the opening of the valve device 02.

[0100] In some embodiments, it further includes: a temperature switch 09 for detecting the temperature of the lubricating oil in the gear device 01 and outputting a temperature signal, the temperature switch 09 is connected to the gear device 01, and the temperature switch 09 is signal-connected to the control module 04. By collecting and processing the temperature signal of the temperature switch 09, it is possible to effectively determine whether the gear device 01 is in a normal working state.

[0101] In some embodiments, the temperature switch 09 can be arranged in the gear device 01 for detecting the real-time temperature of the lubricating oil in the gear device. For example, the temperature signal is converted into a 4~20mA analog signal and fed back to the control module 04 to monitor the temperature of the lubricating oil in the gear device in real time.

[0102] In some embodiments, the pressure switch 10 is signal-connected to the control module 04. The pressure switch 10 can detect the actual pressure at the oil inlet of the gear device 01 to realize the real-time monitoring of the pressure at the oil inlet of the gear device 01 and ensure the normal operation of the gear device 01.

[0103] In some embodiments, the flow switch 11 is signal-connected to the control module 04. By detecting the lubricating oil flow rate with the flow switch 11, the control of the lubricating oil flow rate can be made more precise.

[0104] By setting the flow switch 11, the pressure switch 10, the liquid level detection module 05, the main drive motor 06, the current mutual inductance module 07, the electric actuator 08, and the temperature switch 09, the precise control requirements for the lubricating oil flow rate during the normal operation of the high-speed gear device are met, and the accuracy and automation degree of the control of the lubricating oil flow rate of the gear device are improved. Through the automatic control of the lubricating oil flow rate of the gear device, the system can adapt to the dynamic changes of the lubricating oil flow rate of the gear device and avoid unreasonable situations in the control of the lubricating oil flow rate.

[0105] In some embodiments, the processing unit further includes: a communication sub-unit for communicating with external devices, and the communication sub-unit is connected to the signal processing sub-unit. By communicating with external devices, the communication sub-unit can realize the information interaction between the lubricating oil flow control system of the gear device 01 and external devices, monitor the abnormal conditions of the gear device 01 in real time, issue alarms in a timely manner, and realize the real-time display of the monitoring data in the lubricating oil flow control system of the gear device 01, which is beneficial for relevant personnel to discover and troubleshoot faults in a timely manner.

[0106] In some embodiments, the control module 04 further includes a memory, and the memory is connected to the processing unit and completes the communication therebetween.

[0107] In some embodiments, the above processing unit may be a general - purpose processor, including a central processing unit (CPU for short), a network processor (NP for short), etc.; it may also be a digital signal processor (DSP for short), an application - specific integrated circuit (ASIC for short), a field - programmable gate array (FPGA for short), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components; further, the above processing unit may also adopt various units that can implement adjustable digital signals, such as various single - chip microcomputers, host computers, or a central processing unit (CPU, Central Processing Unit).

[0108] In the above embodiments, although the present invention has been described in conjunction with specific embodiments of the present invention, many substitutions, modifications, and variations of these embodiments will be apparent to those of ordinary skill in the art based on the previous description. The embodiments of the present invention are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims.

[0109] The above embodiments are only illustrative of the principles and effects of the present invention and are not used to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A method for controlling the lubricating oil flow rate of a gear device, characterized in that, it includes: collecting the status feedback signal of the gear device, and the status feedback signal includes at least one of the following: temperature signal, liquid level status signal, current signal; adjusting the opening degree of the valve device according to the status feedback signal, and completing the control of the lubricating oil flow rate of the gear device by adjusting the opening degree of the valve device; The step of adjusting the opening degree of the valve device according to the status feedback signal includes: presetting the initial opening degree of the valve device; according to the temperature signal, judging whether the temperature of the gear device is greater than the preset upper temperature threshold. If the temperature of the gear device is not greater than the temperature threshold, then adjust the opening degree of the valve device to the initial opening degree, and output the corresponding command signal to complete the adjustment of the opening degree of the valve device; The step of adjusting the opening degree of the valve device according to the status feedback signal further includes: collecting the opening degree signal of the valve device; if the temperature of the gear device is greater than the temperature threshold, then according to the opening degree signal, judging whether the current opening degree of the valve device is equal to the initial opening degree. If the current opening degree is not equal to the initial opening degree, it is determined that the valve device is malfunctioning and an alarm is issued; if the current opening degree is equal to the initial opening degree, it is determined that the valve device is working normally; After the step of determining that the valve device is working normally, it includes: according to the liquid level status signal, judging whether the normally closed switch in the liquid level detection module is triggered. If the normally closed switch is triggered, it is determined that the liquid level of the gear device is low; After the step of determining that the liquid level of the gear device is low, it includes: collecting the pressure signal and flow signal of the valve device; according to the current signal, judging whether the feedback current of the main drive motor shows an upward trend; according to the pressure signal, judging whether the pressure value of the pressure switch is less than the preset lower pressure limit; according to the flow signal, judging whether the flow value of the flow switch is less than the preset lower flow limit; if the feedback current shows an upward trend, the pressure value is less than the lower pressure limit, and the flow value is less than the lower flow limit, it is determined that the lubricating oil flow rate of the gear device is insufficient, and the opening degree of the valve device is adjusted to increase by a preset scale to complete the adjustment of the opening degree of the valve device.

2. The method for controlling the lubricating oil flow rate of a gear device according to claim 1, characterized in that, after the step of determining that the valve device is working normally, it further includes: if the normally closed switch is not triggered, then according to the liquid level status signal, judging whether the normally open switch in the liquid level detection module is triggered. If the normally open switch in the liquid level detection module is not triggered, it is determined that the lubrication of the gear device is abnormal and an alarm is issued; if the normally open switch in the liquid level detection module is triggered, it is determined that the liquid level of the gear device is high, wherein the liquid level detection module is provided with a normally open switch and a normally closed switch.

3. The method for controlling the lubricating oil flow rate of a gear device according to claim 2, characterized in that, after the step of determining that the liquid level of the gear device is low, it further includes: If any of the following situations occurs: the feedback current of the main drive motor does not show an upward trend, the pressure value of the pressure switch is not less than the pressure lower limit value, and the flow value of the flow switch is not less than the flow lower limit value, it is determined that the lubrication of the gear device is abnormal and an alarm is given.

4. The method for controlling the lubricating oil flow of a gear device according to claim 2, wherein, after the step of determining that the liquid level of the gear device is high, it includes: judging whether the feedback current of the main drive motor shows an upward trend according to the current signal; judging whether the pressure value of the pressure switch is greater than a preset pressure upper limit value according to the pressure signal; judging whether the flow value of the flow switch is greater than a preset flow upper limit value according to the flow signal; If the feedback current of the main drive motor shows an upward trend, and the pressure value of the pressure switch is greater than the pressure upper limit value, and at the same time, the flow value of the flow switch is greater than the flow upper limit value, it is determined that the lubricating oil flow of the gear device is too large, and the opening degree of the valve device is adjusted to decrease by a preset scale to complete the adjustment of the opening degree of the valve device.

5. The method for controlling the lubricating oil flow of a gear device according to claim 4, wherein, after the step of determining that the liquid level of the gear device is high, it further includes: If any of the following situations occurs: the feedback current of the main drive motor does not show an upward trend, the pressure value of the pressure switch is not greater than the pressure upper limit value, and the flow value of the flow switch is not greater than the flow upper limit value, it is determined that the lubrication of the gear device is abnormal and an alarm is given.

6. The method for controlling the lubricating oil flow of a gear device according to claim 1, wherein, Receive the shutdown signal of the external device. If the shutdown instruction sent by the external device is received, execute the shutdown instruction to end the adjustment of the opening degree of the valve device; if the shutdown instruction sent by the external device is not received, continue to adjust the opening degree of the valve device according to the collected signal.

7. A lubricating oil flow control system for a gear device, wherein, the system is used to implement the method for controlling the lubricating oil flow of a gear device according to any one of claims 1-6, and includes: a gear device; a valve device for adjusting the opening degree to control the lubricating oil flow of the gear device; a lubricating oil pumping station for providing lubricating oil; a control module for collecting the state feedback signal of the gear device and adjusting the opening degree of the valve device according to the state feedback signal, and controlling the lubricating oil flow of the gear device by adjusting the opening degree of the valve device; the state feedback signal includes at least one of the following: temperature signal, liquid level state signal, current signal; The step of adjusting the opening degree of the valve device according to the state feedback signal includes: presetting the initial opening degree of the valve device; judging whether the temperature of the gear device is greater than a preset temperature threshold upper limit according to the temperature signal. If the temperature of the gear device is not greater than the temperature threshold upper limit, adjust the opening degree of the valve device to the initial opening degree and output a corresponding command signal to complete the adjustment of the opening degree of the valve device. The step of adjusting the opening degree of the valve device according to the state feedback signal further includes: collecting the opening degree signal of the valve device; if the temperature of the gear device is greater than the upper limit of the temperature threshold, then according to the opening degree signal, determining whether the current opening degree of the valve device is equal to the initial opening degree, if the current opening degree is not equal to the initial opening degree, then determining that the valve device is malfunctioning and issuing an alarm; if the current opening degree is equal to the initial opening degree, then determining that the valve device is operating normally; The gear device, the valve device and the lubrication pump station are sequentially connected to form a closed loop, and the valve device is signal-connected to the control module.

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