Method and device for controlling temperature of lubricating grease for engineering machinery and engineering machinery

Abstract

The invention discloses a lubricating grease temperature control method and device for engineering machinery and the engineering machinery, the lubricating grease temperature control method and device are applied to a lubricating grease heating system, the lubricating grease heating system comprises a temperature detection device, an engine, a heat exchanger and a cooling liquid circulation pipeline, and the temperature detection device is used for detecting the temperature of a lubricating grease storage device; the engine and the heat exchanger are connected through a cooling liquid circulation pipeline. The method comprises the steps that the current temperature, detected by the temperature detection device, of the lubricating grease storage device is obtained; and under the condition that the current temperature is lower than the preset lubricating grease temperature lower limit threshold value, a cooling liquid circulation pipeline is started, so that the lubricating grease storage device is heated through the heat exchanger. The high-temperature cooling liquid of the engine of the engineering machinery is used as a heat source, the lubricating grease storage device is heated through the heat exchanger, energy consumption can be reduced, opening and closing of the cooling liquid circulation pipeline are controlled based on the current temperature of the lubricating grease storage device, and efficiency is higher.

Description

Technical Field

[0001] The present application relates to the technical field of engineering machinery, and in particular to a method and device for controlling the temperature of grease in engineering machinery, and the engineering machinery. Background Art

[0002] In the routine maintenance of mining machinery (such as excavators and mining trucks), adding grease (butter) is a critical step in ensuring the normal operation of the equipment. However, in low or extremely cold operating conditions, the viscosity of ordinary grease increases sharply and may even solidify, making pumping difficult and seriously affecting lubrication efficiency. Traditional solutions mainly include electric heating, open flame heating, or hot water baths. However, these methods all have significant drawbacks, such as high energy consumption, requiring manual control, low efficiency, and significant safety risks. Therefore, existing grease heating methods suffer from high energy consumption and low efficiency. Summary of the Invention

[0003] The purpose of the embodiments of the present application is to provide a method, device, engineering machinery and machine-readable storage medium for controlling the temperature of grease in engineering machinery, so as to solve the problem of high energy consumption and low efficiency of the grease heating method in the prior art.

[0004] To achieve the above-mentioned objectives, the present application provides, in a first aspect, a method for controlling the temperature of grease for construction machinery. The construction machinery includes a grease storage device and a grease heating system. The method is applied to the grease heating system. The grease heating system includes a temperature detection device, an engine, a heat exchanger, and a coolant circulation pipeline. The temperature detection device is used to detect the temperature of the grease storage device. The engine and the heat exchanger are connected via a coolant circulation pipeline. The engine is used to heat the coolant in the coolant circulation pipeline. The method includes: Acquiring the current temperature of the grease storage device detected by the temperature detection device; When the current temperature is lower than the preset grease temperature lower limit threshold, the coolant circulation pipeline is activated to heat the grease storage device through the heat exchanger.

[0005] In an embodiment of the present application, the grease heating system also includes a temperature control valve, which is arranged on the coolant circulation pipeline and is used to control the on and off of the coolant circulation pipeline. Starting the coolant circulation pipeline includes: controlling the temperature control valve to open.

[0006] In an embodiment of the present application, the method also includes: obtaining the real-time temperature and heating time of the grease storage device during heating of the grease storage device; determining the real-time temperature change rate based on the real-time temperature and heating time; determining the real-time temperature error based on the real-time temperature and the preset temperature range; determining the target control parameters of the temperature control valve based on the real-time temperature change rate and the real-time temperature error based on a pre-built fuzzy rule base; and adjusting the opening of the temperature control valve according to the target control parameters.

[0007] In an embodiment of the present application, there are multiple temperature detection devices, which are respectively arranged at the top, bottom and side of the grease storage device. Obtaining the current temperature of the grease storage device includes: obtaining the top temperature, side temperature and bottom temperature of the grease storage device; determining the current temperature based on the preset weight parameters corresponding to the top temperature, side temperature, bottom temperature and the temperatures of each part.

[0008] In an embodiment of the present application, the method further includes: when it is detected that the temperature of the grease storage device after heating is greater than a preset grease temperature upper limit threshold, controlling the coolant circulation pipeline to close to stop heating the grease storage device.

[0009] In an embodiment of the present application, the method further includes: controlling the coolant circulation pipeline to close when the current temperature is greater than or equal to a preset grease temperature lower limit threshold.

[0010] In an embodiment of the present application, the grease heating system also includes a backup heating device, and the method also includes: when it is detected that the coolant temperature of the coolant after being heated by the engine is lower than a preset coolant temperature threshold, the grease storage device is heated by the backup heating device.

[0011] A second aspect of the present application provides a device for controlling the temperature of grease in construction machinery, comprising: a memory configured to store instructions; The processor is configured to call instructions from the memory and implement the above-mentioned method for controlling grease temperature of engineering machinery when executing the instructions.

[0012] A third aspect of the present application provides an engineering machine, comprising: Grease storage device; A grease heating system includes a temperature detection device, an engine, a heat exchanger, and a coolant circulation pipeline. The temperature detection device is used to detect the temperature of the grease storage device. The engine and the heat exchanger are connected through the coolant circulation pipeline. The engine is used to heat the coolant in the coolant circulation pipeline. The above-mentioned device for controlling the temperature of grease in engineering machinery.

[0013] A fourth aspect of the present application provides a machine-readable storage medium having stored thereon instructions for causing a machine to execute the above-mentioned method for controlling grease temperature of engineering machinery.

[0014] In the above embodiment, the engineering machinery includes a grease storage device and a grease heating system. The grease heating system includes a temperature detection device, an engine, a heat exchanger, and a coolant circulation pipeline. The temperature detection device is used to detect the temperature of the grease storage device. The engine and the heat exchanger are connected through the coolant circulation pipeline. The engine is used to heat the coolant in the coolant circulation pipeline. By obtaining the current temperature of the grease storage device detected by the temperature detection device, when the current temperature is lower than the preset grease temperature lower limit threshold, the coolant circulation pipeline is started to heat the grease storage device through the heat exchanger. The present application utilizes the high-temperature coolant of the engineering machinery's own engine as a heat source to heat the grease storage device through a heat exchanger, which is conducive to reducing energy consumption and controlling the opening and closing of the coolant circulation pipeline based on the current temperature of the grease storage device, which is more efficient.

[0015] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the following detailed description, they are used to explain the embodiments of the present application but do not constitute a limitation on the embodiments of the present application. In the accompanying drawings: Figure 1 A schematic structural diagram of a grease heating system provided in a specific embodiment of the present application; Figure 2 A schematic flow chart of a method for controlling grease temperature of engineering machinery provided in an embodiment of the present application; Figure 3 A PID control flow chart provided for a specific embodiment of the present application; Figure 4 A fuzzy PID control design principle diagram provided for a specific embodiment of the present application; Figure 5 A schematic diagram of the installation of a temperature sensor on a butter tub according to a specific embodiment of the present application; Figure 6 This is a structural block diagram of a device for controlling grease temperature of engineering machinery provided in an embodiment of the present application. DETAILED DESCRIPTION

[0017] To make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It should be understood that the specific implementation methods described herein are only used to illustrate and explain the embodiments of the present application and are not used to limit the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0018] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), such directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0019] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0020] Grease is a semi-solid lubricant made from a base oil, a thickener, and additives. It is widely used in mechanical lubrication to reduce friction and wear and protect components. Grease refilling is a critical step in routine maintenance of mining machinery to ensure proper operation. However, in low or extremely cold operating conditions, the viscosity of ordinary grease increases dramatically, or even solidifies, making pumping difficult and severely impacting lubrication efficiency. Traditional solutions primarily include electric heating, open flame heating, or hot water baths. However, these methods all have significant drawbacks: Electric heating relies on an external power source, making it less suitable for field use or in mining areas with unstable power supplies, and consumes a lot of energy. Open flame heating, while offering rapid temperature increases, poses a fire hazard, and precise temperature control is difficult, which can easily lead to localized overheating and failure of the grease. Hot water / steam heating requires an additional heat source, resulting in a complex system and the potential for moisture infiltration to affect grease performance. Furthermore, all of these methods require manual control and rely on experience, resulting in low efficiency. To address the issues of high energy consumption, low safety, complex systems, and low heating efficiency in existing technologies, the present invention proposes a grease heating system.

[0021] It's understandable that mining machinery is typically equipped with high-powered diesel engines, whose coolant can be maintained at a stable temperature of 80-95°C during operation, offering considerable heat recovery potential. Therefore, the present embodiment proposes an improved grease heating system based on the original system for mining machinery. This system utilizes the residual heat of the engine coolant to heat the grease. This system not only adapts to the harsh mining environment, but also fully utilizes the equipment's own heat source, improving maintenance efficiency and reducing operating costs.

[0022] Specifically, the engineering machinery in the embodiment of the present application includes a grease storage device and a grease heating system. The grease storage device is used to store grease and is usually an insulated tank to prevent rapid heat loss. The grease heating system includes a temperature detection device, an engine, a heat exchanger, and a coolant circulation pipeline. The temperature detection device can be a temperature sensor installed at various locations of the grease storage device to monitor the temperature of the grease in real time. The coolant circulation pipeline is used to connect the engine and the heat exchanger. The coolant circulation pipeline includes a high-temperature branch and a low-temperature branch to form a coolant circulation channel. The engine serves as a heat source in the grease heating system and can heat the coolant during operation. The heat exchanger is arranged in contact with the grease heating system and can heat the grease in the grease storage device using the heat from the coolant. In one example, the heat exchanger can be arranged inside the temperature detection device and directly immersed in the grease storage device, which must be sealed to prevent leakage. In another example, the heat exchange device can be wrapped around the outer wall or bottom of the grease storage device and use thermal conductive silicone grease to enhance contact. In this way, after being heated, the engine coolant can flow into the heat exchanger through the high-temperature branch of the coolant circulation pipeline, and the heat of the coolant is transferred to the grease storage device through the heat exchanger to heat the grease in the grease storage device. The coolant flowing through the heat exchanger then returns to the engine through the low-temperature branch of the coolant circulation pipeline, and so on, thereby realizing cyclic heating.

[0023] Figure 1 This is a structural diagram of a grease heating system provided in a specific embodiment of the present application. Figure 1As shown, the grease storage device is cylindrical and the heat exchanger is arranged at the bottom of the grease storage device. The butter in the figure is grease. Specifically, in the specific embodiment of the present application, temperature sensors are installed around the grease storage device to monitor the temperature of the grease in real time. Specifically, the heat exchanger is used to transfer the heat of the engine coolant to the grease storage device. The heat exchanger is close to the bottom of the grease barrel to ensure that the heat can be efficiently transferred to the grease storage device. The shape of the heat exchanger can be determined according to actual conditions, such as rectangular or circular. The coolant circulation pipeline includes a high-temperature branch and a low-temperature branch. Among them, the high-temperature branch is led out from the rear of the engine and connected to the top of the heat exchanger, which is responsible for the inflow of high-temperature coolant. The low-temperature branch is led out from the bottom of the heat exchanger and connected back to the engine's cooling system, which is responsible for the outflow of low-temperature coolant. The grease heating system can also include a controller for automatically adjusting the opening and closing of the coolant circulation pipeline based on the temperature sensor data to maintain the temperature of the grease barrel within a set range. In this way, using the heat of the engine coolant to heat the grease can significantly increase the heating rate of the lubricating oil and reduce the delayed start time of the lubricating oil injection machine.

[0024] Figure 2 This is a flow chart of a method for controlling grease temperature in engineering machinery provided in an embodiment of the present application. Figure 2 As shown, an embodiment of the present application provides a method for controlling the temperature of grease for engineering machinery. The engineering machinery includes a grease storage device and a grease heating system. The method is applied to the grease heating system. The grease heating system includes a temperature detection device, an engine, a heat exchanger, and a coolant circulation pipeline. The temperature detection device is used to detect the temperature of the grease storage device. The engine and the heat exchanger are connected through a coolant circulation pipeline. The engine is used to heat the coolant in the coolant circulation pipeline. The method may include the following steps.

[0025] Step 101: Acquire the current temperature of the grease storage device detected by a temperature detection device.

[0026] Step 102 : When the current temperature is lower than a preset grease temperature lower limit threshold, start the coolant circulation pipeline to heat the grease storage device through the heat exchanger.

[0027] Specifically, while the construction machinery's engine is running, a temperature detection device collects the current temperature of the grease storage device in real time. This temperature detection device is typically a high-precision sensor that accurately senses grease temperature changes. The current temperature is then compared with a preset lower grease temperature threshold. This lower threshold is set based on the grease type and usage requirements, typically between 15 and 25°C.

[0028] If the current temperature is lower than the preset lower limit of the grease temperature, the coolant circulation pipeline is activated. In this way, the heat generated by the engine when it is running heats the coolant. The coolant flows through the heat exchanger through the circulation pipeline and exchanges heat with the grease storage device to achieve the heating of the grease. In this way, heating is only started when the grease temperature is insufficient, which can avoid meaningless energy consumption, and using the engine's waste heat for heating can reduce the energy consumption and failure risk of additional heating devices. In addition, the embodiment of the present application is based on the existing engine and coolant system of the construction machinery, does not require major hardware modifications, and has low system complexity.

[0029] In an embodiment of the present application, the method further includes: when it is detected that the temperature of the grease storage device after heating is greater than a preset grease temperature upper limit threshold, controlling the coolant circulation pipeline to close to stop heating the grease storage device.

[0030] It can be understood that the preset upper limit threshold of the grease temperature refers to the maximum value of the grease temperature in the grease storage device. The preset upper limit threshold of the grease temperature is generally 5-10°C higher than the lower limit threshold, such as 30°C. Specifically, during the process of starting the coolant circulation pipeline for heating, the temperature of the grease storage device is detected in real time. When it is detected that the temperature is greater than the upper limit threshold, the coolant circulation pipeline is controlled to be closed and the heating is stopped to prevent the grease temperature from being too high, resulting in performance degradation or safety hazards. In this way, it is possible to avoid oxidation and thinning of the grease due to excessive temperature, thereby ensuring its lubrication effect and service life. At the same time, it can also prevent safety accidents such as fire caused by excessive temperature, thereby improving the safety of construction machinery operation.

[0031] In an embodiment of the present application, the method further includes: controlling the coolant circulation pipeline to close when the current temperature is greater than or equal to a preset grease temperature lower limit threshold.

[0032] Specifically, when it is detected that the current temperature of the grease storage device is greater than or equal to the preset grease temperature lower limit threshold, the coolant circulation pipeline is controlled to be closed, that is, the coolant circulation pipeline is switched to a closed state or remains in a closed state to stop heating the grease, avoiding excessive temperature and energy waste.

[0033] In the above embodiment, the engineering machinery includes a grease storage device and a grease heating system. The grease heating system includes a temperature detection device, an engine, a heat exchanger, and a coolant circulation pipeline. The temperature detection device is used to detect the temperature of the grease storage device. The engine and the heat exchanger are connected through the coolant circulation pipeline. The engine is used to heat the coolant in the coolant circulation pipeline. By obtaining the current temperature of the grease storage device detected by the temperature detection device, when the current temperature is lower than the preset grease temperature lower limit threshold, the coolant circulation pipeline is started to heat the grease storage device through the heat exchanger. The present application utilizes the high-temperature coolant of the engineering machinery's own engine as a heat source to heat the grease storage device through a heat exchanger, which is conducive to reducing energy consumption and controlling the opening and closing of the coolant circulation pipeline based on the current temperature of the grease storage device, which is more efficient.

[0034] In an embodiment of the present application, the grease heating system may further include a temperature control valve, which is arranged on the coolant circulation pipeline and is used to control the on and off of the coolant circulation pipeline. Starting the coolant circulation pipeline includes: controlling the temperature control valve to open.

[0035] Specifically, the grease heating system may further include a temperature control valve for controlling the flow of coolant. In the embodiment of the present application, when the temperature control valve is open, the coolant is allowed to flow in the circulation pipeline, thereby achieving heat transfer. When the temperature control valve is closed, the coolant stops flowing in the coolant circulation pipeline. Preferably, the temperature control valve is arranged in a high-temperature branch in the coolant circulation pipeline. It should be noted that by changing the size of the valve opening of the temperature control valve, the flow rate of the coolant in the coolant circulation pipeline can be adjusted, thereby affecting the heating speed.

[0036] In an embodiment of the present application, the method may further include: obtaining the real-time temperature and heating time of the grease storage device during heating of the grease storage device; determining the real-time temperature change rate based on the real-time temperature and heating time; determining the real-time temperature error based on the real-time temperature and a preset temperature range; determining the target control parameters of the temperature control valve based on the real-time temperature change rate and the real-time temperature error based on a pre-built fuzzy rule base; and adjusting the opening of the temperature control valve according to the target control parameters.

[0037] Specifically, during the heating process, the real-time temperature and heating duration of the grease storage device are continuously acquired. Based on the real-time temperature and heating duration, the temperature change per unit time, i.e., the real-time temperature change rate, is calculated. The real-time temperature is compared with a preset temperature range (e.g., 18-28°C) to determine the real-time temperature error. Based on a pre-built fuzzy rule base, the real-time temperature change rate and real-time temperature error are input, and fuzzy logic reasoning is used to determine the target control parameters of the temperature control valve. The temperature control valve opening is adjusted according to the target control parameters to control the coolant flow rate and thus the heating rate. In this way, by dynamically adjusting the temperature control valve opening through fuzzy control, precise control of the grease temperature can be achieved, narrowing the temperature fluctuation range. In addition, automatically adjusting the heating intensity based on temperature change trends and errors can adapt to different environments and operating conditions, avoid overheating or underheating, improve energy efficiency, and reduce fuel consumption.

[0038] Figure 3 A PID control flow chart is provided for a specific embodiment of the present application. Figure 4 A fuzzy PID control design principle diagram is provided for a specific embodiment of this application. Figure 3 and Figure 4 As shown, the butter barrel is the grease storage device in the above embodiment. In a specific embodiment of the present application, a PID control system is used to integrate a temperature sensor to transmit signals and a heating device to achieve automatic temperature control. In this control system, the fuzzy PID controller can more flexibly respond to temperature changes and system nonlinearity, improving the accuracy and stability of temperature control. The fuzzy PID controller is designed as follows: Figure 3 As shown. Obtain the mathematical model of the butter barrel, including the transfer function of the temperature inside the barrel. Understand the characteristics of the heat treatment process in the barrel, including heating rate, cooling rate, etc. Clarify the goals of temperature control of the butter barrel, including the desired temperature response characteristics, temperature stability requirements, and product quality standards. Fuzzify the temperature error and temperature change rate in the barrel and map them to fuzzy sets to establish a fuzzy rule base. The fuzzy rule base contains the relationship rules between fuzzy inputs and fuzzy outputs. According to the fuzzy rule base, fuzzy logic operations are performed to obtain fuzzy outputs to control the temperature in the butter barrel to always remain within a certain range, and then combined with the heating device, such as Figure 4 Flow chart of the process to achieve the effect of automatic temperature control.

[0039] In an embodiment of the present application, there are multiple temperature detection devices, which are respectively arranged at the top, bottom and side of the grease storage device. Obtaining the current temperature of the grease storage device may include: obtaining the top temperature, side temperature and bottom temperature of the grease storage device; determining the current temperature based on the preset weight parameters corresponding to the top temperature, side temperature, bottom temperature and the temperatures of each part.

[0040] It can be understood that in order to improve the accuracy of the temperature detection of the grease in the grease storage device, the number of temperature detection devices in the embodiment of the present application is multiple, and they are respectively arranged on the top, bottom and side of the grease storage device. Preferably, according to the shape and volume of the grease storage device, multiple temperature detection devices are evenly installed on the top, bottom and side of the grease storage device. Furthermore, the detection data of each temperature detection device is obtained, and then the average of the detection data of the temperature detection devices installed on the top, bottom and side is calculated respectively to obtain the top temperature, side temperature and bottom temperature of the grease storage device. Furthermore, according to the preset weight parameters corresponding to the top temperature, side temperature, bottom temperature and the temperature of each part, a weighted summation calculation is performed to determine the current temperature. In this way, the accuracy of the grease temperature monitoring in the grease storage device is ensured.

[0041] Figure 5 This is a schematic diagram of the installation of a temperature sensor on a butter barrel provided in a specific embodiment of the present application. The temperature sensor is the temperature detection device in the above embodiment, and the butter barrel is the grease storage device in the above embodiment. Figure 5 As shown in the figure, multiple temperature sensors are evenly arranged around the butter barrel to ensure accurate temperature monitoring. Assume that the butter barrel is cylindrical with a diameter of D and a height of H. The coordinates of the bottom center are the origin (0, 0, 0).

[0042] The top temperature sensors are installed by evenly distributing them in a circular pattern around the top of the butter tub. The sensor coordinates are: Sensor 1: (D / 2, 0, H); Sensor 2: (-D / 2cos60°, D / 2sin60°, H); Sensor 3: (-D / 2cos60°, -D / 2sin60°, H). The sensors are fixed to the top outer wall of the butter tub using a bracket, with a rubber gasket between the bracket and the tub to prevent vibration interference.

[0043] The side temperature sensors are installed by evenly distributing four sensors in a circular pattern around the side of the butter tub. The sensor coordinates are: Sensor 4: (D / 2, 0, H / 2); Sensor 5: (0, D / 2, H / 2); Sensor 6: (-D / 2, 0, H / 2); Sensor 7: (0, -D / 2, H / 2). The sensors are embedded in the side wall of the butter tub or mounted using a fixed bracket, ensuring close contact with the tub surface.

[0044] The bottom temperature sensors are installed by placing three sensors evenly distributed in a circular pattern around the bottom of the butter tub. The sensor coordinates are: Sensor 8: (D / 2, 0, 0); Sensor 9: (-D / 2cos60°, D / 2sin60°, 0); Sensor 10: (-D / 2cos60°, -D / 2sin60°, 0). The sensors are fixed to the bottom outer wall of the butter tub using a bracket. A rubber gasket is placed between the bracket and the tub to prevent vibration interference.

[0045] During the temperature data collection process, each temperature sensor collects temperature data from different locations on the butter tub in real time. The data collection frequency is set according to system requirements, for example, once every 5 seconds. Furthermore, a weight is assigned to each sensor based on the importance of its location to calculate a composite temperature value. For example, the top sensor has a weight of 0.3, the side sensor has a weight of 0.4, and the bottom sensor has a weight of 0.3. In one example, the composite temperature can be calculated using weighted calculations, as shown in the following formula: ; in, is the integrated temperature, is the temperature value of the i-th sensor, For its weight, is the number of temperature sensors.

[0046] In another example, the butter barrel can be divided into three areas: top, side, and bottom. The average temperature of each area is calculated separately, and then the weighted sum is taken with the corresponding weight values ​​to obtain the overall temperature.

[0047] In an embodiment of the present application, the grease heating system also includes a backup heating device, and the method also includes: when it is detected that the coolant temperature of the coolant after being heated by the engine is lower than a preset coolant temperature threshold, the grease storage device is heated by the backup heating device.

[0048] Specifically, the coolant temperature after engine heating is detected and compared with a preset coolant temperature threshold. If the coolant temperature falls below the threshold, indicating insufficient heat from the engine, the backup heating device is activated to reheat the grease storage device and ensure that the grease temperature meets the required level. This application utilizes a dual heating system to improve the reliability of temperature control and prevent insufficient grease temperature due to engine failure. Thus, in cold weather or during the initial engine startup phase, when the coolant temperature is insufficient, the backup heating device maintains the grease temperature at a normal level, ensuring that the construction machinery can still start and operate normally in cold weather.

[0049] Figure 6 This is a structural block diagram of a device for controlling grease temperature of engineering machinery provided in an embodiment of the present application. Figure 6 As shown, the present application also provides a device for controlling the temperature of grease for engineering machinery, comprising: Memory 610, configured to store instructions; The processor 620 is configured to call instructions from the memory 610 and implement the method for controlling grease temperature of an engineering machine in the above embodiment when executing the instructions.

[0050] The present application also provides an engineering machine, comprising: Grease storage device; A grease heating system includes a temperature detection device, an engine, a heat exchanger, and a coolant circulation pipeline. The temperature detection device is used to detect the temperature of the grease storage device. The engine and the heat exchanger are connected through the coolant circulation pipeline. The engine is used to heat the coolant in the coolant circulation pipeline. The device for controlling grease temperature of construction machinery in the above-mentioned embodiment.

[0051] Specifically, the engineering machinery in the embodiment of the present application includes a grease storage device and a grease heating system. The grease storage device is used to store grease and is usually an insulated tank to prevent rapid heat loss. The grease heating system includes a temperature detection device, an engine, a heat exchanger, and a coolant circulation pipeline. The temperature detection device can be a temperature sensor installed at various locations of the grease storage device to monitor the temperature of the grease in real time. The coolant circulation pipeline is used to connect the engine and the heat exchanger. The coolant circulation pipeline includes a high-temperature branch and a low-temperature branch to form a coolant circulation channel. The engine serves as a heat source in the grease heating system and can heat the coolant during operation. The heat exchanger is arranged in contact with the grease heating system and can heat the grease in the grease storage device using the heat from the coolant. In one example, the heat exchanger can be arranged inside the temperature detection device and directly immersed in the grease storage device, which must be sealed to prevent leakage. In another example, the heat exchange device can be wrapped around the outer wall or bottom of the grease storage device and use thermal conductive silicone grease to enhance contact. In this way, after being heated, the engine coolant can flow into the heat exchanger through the high-temperature branch of the coolant circulation pipeline, and the heat of the coolant is transferred to the grease storage device through the heat exchanger to heat the grease in the grease storage device. The coolant flowing through the heat exchanger then returns to the engine through the low-temperature branch of the coolant circulation pipeline, and so on, thereby realizing cyclic heating.

[0052] A fourth aspect of the present application provides a machine-readable storage medium having stored thereon instructions for causing a machine to execute the method for controlling grease temperature for engineering machinery according to the above-mentioned embodiment.

[0053] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. Furthermore, the present application may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0054] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems) and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0055] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0056] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 The steps for the function specified in one or more boxes.

[0057] In a typical configuration, a computing device includes one or more processors (CPUs), input / output interfaces, network interfaces, and memory.

[0058] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0059] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can be implemented using any method or technology for information storage. Information can be computer-readable instructions, data structures, program modules, or other data. Examples of computer storage media include, but are not limited to, phase-change RAM (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassettes, magnetic disk storage or other magnetic storage devices, or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer-readable media does not include transitory computer-readable media, such as modulated data signals and carrier waves.

[0060] It should also be noted that the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, commodity, or apparatus that includes a series of elements includes not only those elements but also other elements not explicitly listed, or includes elements inherent to such process, method, commodity, or apparatus. In the absence of further limitations, an element defined by the phrase "comprises a ..." does not exclude the presence of other identical elements in the process, method, commodity, or apparatus that includes the element.

[0061] The above are merely embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should all be included within the scope of the claims of the present application.

Claims

1. A method for controlling the temperature of grease for engineering machinery, characterized in that: The engineering machinery includes a grease storage device and a grease heating system. The method is applied to the grease heating system. The grease heating system includes a temperature detection device, an engine, a heat exchanger, and a coolant circulation pipeline. The temperature detection device is used to detect the temperature of the grease storage device. The engine and the heat exchanger are connected via the coolant circulation pipeline. The engine is used to heat the coolant in the coolant circulation pipeline. The method includes: obtaining a current temperature of the grease storage device detected by the temperature detection device; When the current temperature is lower than a preset grease temperature lower limit threshold, the coolant circulation pipeline is started to heat the grease storage device through the heat exchanger.

2. The method according to claim 1, characterized in that The grease heating system further includes a temperature control valve, which is provided on the coolant circulation pipeline and is used to control the on / off of the coolant circulation pipeline. The starting of the coolant circulation pipeline includes: Control the temperature control valve to open.

3. The method according to claim 2, characterized in that The method further comprises: During the heating process of the grease storage device, obtaining the real-time temperature and heating time of the grease storage device; determining a real-time temperature change rate according to the real-time temperature and the heating duration; determining a real-time temperature error based on the real-time temperature and a preset temperature range; Determining target control parameters of the temperature control valve according to the real-time temperature change rate and the real-time temperature error based on a pre-built fuzzy rule base; The opening of the temperature control valve is adjusted according to the target control parameter.

4. The method according to claim 1, wherein There are multiple temperature detection devices, which are respectively arranged on the top, bottom and side of the grease storage device. The obtaining of the current temperature of the grease storage device includes: Obtaining the top temperature, side temperature, and bottom temperature of the grease storage device; The current temperature is determined according to the top temperature, the side temperature, the bottom temperature, and preset weight parameters corresponding to the temperatures of each part.

5. The method according to claim 1, wherein The method further comprises: When it is detected that the temperature of the grease storage device after heating is greater than a preset grease temperature upper limit threshold, the coolant circulation pipeline is controlled to be closed to stop heating the grease storage device.

6. The method according to claim 1, characterized in that The method further comprises: When the current temperature is greater than or equal to the preset grease temperature lower limit threshold, the coolant circulation pipeline is controlled to be closed.

7. The method according to claim 1, characterized in that The grease heating system further includes a backup heating device, and the method further includes: When it is detected that the coolant temperature of the coolant heated by the engine is lower than a preset coolant temperature threshold, the grease storage device is heated by the backup heating device.

8. A device for controlling the temperature of grease for engineering machinery, characterized in that: include: a memory configured to store instructions; A processor is configured to call the instructions from the memory and implement the method for controlling grease temperature of an engineering machine according to any one of claims 1 to 7 when executing the instructions.

9. An engineering machine, characterized in that: include: Grease storage device; A grease heating system comprising a temperature detection device, an engine, a heat exchanger, and a coolant circulation pipeline, wherein the temperature detection device is used to detect the temperature of the grease storage device, the engine and the heat exchanger are connected via the coolant circulation pipeline, and the engine is used to heat the coolant in the coolant circulation pipeline; The device for controlling the temperature of grease for construction machinery according to claim 8.

10. A machine-readable storage medium, characterized in that The machine-readable storage medium stores instructions for causing a machine to execute the method for controlling grease temperature for engineering machinery according to any one of claims 1 to 7.

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