Hydraulic oil control method, hydraulic oil circulating system and excavator

Abstract

The invention provides a hydraulic oil control method, a hydraulic oil circulation system and an excavator, and is applied to the technical field of engineering machine.The hydraulic oil control method comprises the steps that a temperature control proportional valve is arranged at an oil inlet of a hydraulic oil radiator in the hydraulic oil circulation system; collecting the hydraulic oil temperature of the hydraulic oil circulating system in real time; according to the hydraulic oil temperature, a hydraulic oil control mode is determined, and the hydraulic oil control mode is one of a full-open mode, a partial-open mode and a full-closed mode; according to the hydraulic oil control mode, the valve opening degree of the temperature control proportional valve is controlled, and then the hydraulic oil flow entering the hydraulic oil radiator is controlled. The hydraulic oil temperature of a hydraulic oil circulating system is collected in real time, and the valve opening degree of a temperature control proportional valve arranged at an oil inlet of a hydraulic oil radiator is controlled according to the hydraulic oil temperature, so that the flow of hydraulic oil entering the hydraulic oil radiator is controlled. Therefore, the flow of hydraulic oil entering the hydraulic oil radiator is adjusted, the temperature of the hydraulic oil is kept stable, and the performance of an excavator and a responded hydraulic oil system is provided.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering machinery, and in particular to a hydraulic oil control method, a hydraulic oil circulation system and an excavator. Background Art

[0002] Excavators are widely used in various construction fields, such as water conservancy projects, transportation, circuit engineering, mining and other mechanical construction. They are the main mechanical equipment that are indispensable in various earthwork construction.

[0003] The temperature of the hydraulic oil of the excavator has an important impact on the performance and working efficiency of the excavator. At present, the hydraulic oil of the excavator enters the oil radiator and the oil tank according to a fixed ratio, and the flow of hydraulic oil entering the oil radiator cannot be adjusted, which makes it difficult to maintain a stable temperature of the hydraulic oil, reducing the performance of the excavator. Summary of the invention

[0004] In view of this, an embodiment of the present application provides a hydraulic oil control method, a hydraulic oil circulation system and an excavator. The solution provided by the present application sets a temperature-controlled proportional valve at the oil inlet of the hydraulic oil radiator, and controls the valve opening of the temperature-controlled proportional valve according to the hydraulic oil temperature, thereby controlling the flow of hydraulic oil entering the hydraulic oil radiator, so that the temperature of the hydraulic oil remains stable, thereby improving the performance of the excavator.

[0005] To achieve the above objectives, the embodiments of the present invention provide the following technical solutions:

[0006] A hydraulic oil control method is applied to a hydraulic oil circulation system, wherein a temperature-controlled proportional valve is arranged at the oil inlet of a hydraulic oil radiator in the hydraulic oil circulation system, and the temperature-controlled proportional valve is used to adjust the valve opening according to the temperature of the hydraulic oil to control the flow of hydraulic oil entering the hydraulic oil radiator, and the method comprises:

[0007] Collecting the hydraulic oil temperature of the hydraulic oil circulation system in real time;

[0008] Determining a hydraulic oil control mode according to the hydraulic oil temperature, wherein the hydraulic oil control mode is one of a fully open mode, a partially open mode, and a fully closed mode;

[0009] According to the hydraulic oil control mode, the valve opening of the temperature control proportional valve is controlled, thereby controlling the flow of hydraulic oil entering the hydraulic oil radiator.

[0010] In the above method, optionally, the real-time acquisition of the hydraulic oil temperature of the hydraulic oil circulation system includes:

[0011] A preset oil temperature detector is used to collect the hydraulic oil temperature of the hydraulic oil flowing out of the main valve in the hydraulic oil circulation system in real time.

[0012] In the above method, optionally, determining the hydraulic oil control mode according to the hydraulic oil temperature includes:

[0013] Determining whether the hydraulic oil temperature is less than a preset first oil temperature;

[0014] When the hydraulic oil temperature is lower than the first oil temperature, determining that the hydraulic oil control mode is a full-off mode;

[0015] When the hydraulic oil temperature is not less than the first oil temperature, determining whether the hydraulic oil temperature is greater than a preset second oil temperature, the second oil temperature being greater than the first oil temperature;

[0016] When the hydraulic oil temperature is greater than the second oil temperature, determining that the hydraulic oil control mode is a fully open mode;

[0017] When the hydraulic oil temperature is not greater than the second oil temperature, the hydraulic oil control mode is determined to be a partially open mode.

[0018] In the above method, optionally, controlling the valve opening of the temperature-controlled proportional valve according to the hydraulic oil control mode includes:

[0019] When the hydraulic oil control mode is the fully closed mode, the valve opening of the temperature control proportional valve is controlled to be zero;

[0020] When the hydraulic oil control mode is a partially open mode, the valve opening of the temperature-controlled proportional valve is controlled according to the hydraulic oil temperature and a preset linear control strategy;

[0021] When the hydraulic oil control mode is the fully open mode, the valve opening of the temperature control proportional valve is controlled to be 100%.

[0022] A hydraulic oil circulation system, comprising:

[0023] A main pump, a main valve, an oil temperature detector, a first oil return passage, a second oil return passage and a hydraulic oil tank;

[0024] The main pump is used to pump out hydraulic oil from the hydraulic oil tank, and the pumped hydraulic oil flows to the main valve;

[0025] When the main valve is in an open state, the hydraulic oil flows to the first oil return passage and the second oil return passage, the hydraulic oil passing through the first oil return passage flows back to the hydraulic oil tank, and the hydraulic oil passing through the second oil return passage flows back to the hydraulic oil tank;

[0026] The oil temperature detector is used to detect the hydraulic oil temperature of the hydraulic oil flowing out of the main valve;

[0027] The first oil return passage includes a temperature-controlled proportional valve and a hydraulic oil radiator. The oil inlet of the temperature-controlled proportional valve serves as the oil inlet of the first oil return passage, and the oil outlet of the temperature-controlled proportional valve is connected to the hydraulic oil radiator. The temperature-controlled proportional valve is used to control the valve opening according to the hydraulic oil temperature detected by the oil temperature detector, thereby controlling the flow rate of the hydraulic oil flowing into the hydraulic oil radiator, and the hydraulic oil passing through the hydraulic oil radiator flows back to the hydraulic oil tank.

[0028] In the above system, optionally, the second oil return passage includes:

[0029] Back pressure valve;

[0030] The back pressure valve is used to control the conduction state of the second oil return passage according to the hydraulic pressure value of the hydraulic oil and the opening pressure value of the back pressure valve.

[0031] In the above system, optionally, the process in which the temperature-controlled proportional valve is used to control the valve opening according to the hydraulic oil temperature detected by the oil temperature detector includes:

[0032] According to the hydraulic oil temperature, a hydraulic oil control mode is determined, and the hydraulic oil control mode is one of a fully open mode, a partially open mode, and a fully closed mode; according to the hydraulic oil control mode, the valve opening of the temperature-controlled proportional valve is controlled.

[0033] In the above system, optionally, the process of the temperature-controlled proportional valve determining the hydraulic oil control mode according to the hydraulic oil temperature includes:

[0034] Determining whether the hydraulic oil temperature is less than a preset first oil temperature;

[0035] When the hydraulic oil temperature is lower than the first oil temperature, determining that the hydraulic oil control mode is a full-off mode;

[0036] When the hydraulic oil temperature is not less than the first oil temperature, determining whether the hydraulic oil temperature is greater than a preset second oil temperature, the second oil temperature being greater than the first oil temperature;

[0037] When the hydraulic oil temperature is greater than the second oil temperature, determining that the hydraulic oil control mode is a fully open mode;

[0038] When the hydraulic oil temperature is not greater than the second oil temperature, the hydraulic oil control mode is determined to be a partially open mode.

[0039] In the above system, optionally, the process of the temperature-controlled proportional valve controlling the valve opening of the temperature-controlled proportional valve according to the hydraulic oil control mode includes:

[0040] When the hydraulic oil control mode is the fully closed mode, the valve opening of the temperature control proportional valve is controlled to be zero;

[0041] When the hydraulic oil control mode is a partially open mode, the valve opening of the temperature-controlled proportional valve is controlled according to the hydraulic oil temperature and a preset linear control strategy;

[0042] When the hydraulic oil control mode is the fully open mode, the valve opening of the temperature control proportional valve is controlled to be 100%.

[0043] An excavator comprises the hydraulic oil circulation system described in any one of the above.

[0044] Compared with the prior art, this application has the following advantages:

[0045] The present application provides a hydraulic oil control method, a hydraulic oil circulation system and an excavator, including: a temperature-controlled proportional valve is arranged at the oil inlet of a hydraulic oil radiator in the hydraulic oil circulation system; the hydraulic oil temperature of the hydraulic oil circulation system is collected in real time; the hydraulic oil control mode is determined according to the hydraulic oil temperature, and the hydraulic oil control mode is one of a fully open mode, a partially open mode and a fully closed mode; according to the hydraulic oil control mode, the valve opening of the temperature-controlled proportional valve is controlled, thereby controlling the flow of hydraulic oil entering the hydraulic oil radiator. By collecting the hydraulic oil temperature of the hydraulic oil circulation system in real time, the valve opening of the temperature-controlled proportional valve arranged at the oil inlet of the hydraulic oil radiator is controlled according to the hydraulic oil temperature, thereby controlling the flow of hydraulic oil entering the hydraulic oil radiator. In this way, the flow of hydraulic oil entering the hydraulic oil radiator is adjusted to ensure that the temperature of the hydraulic oil remains stable, and the performance of the hydraulic oil system according to the excavator and the response is provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0047] Figure 1 A flowchart of a hydraulic oil control method provided in an embodiment of the present application;

[0048] Figure 2 A schematic diagram of the structure of a hydraulic oil circulation system provided in an embodiment of the present application;

[0049] Figure 3 A flow chart of a method for determining a hydraulic oil control mode according to a hydraulic oil temperature detected by an oil temperature detector provided in an embodiment of the present application;

[0050] Figure 4 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0051] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] In this application, the terms "comprises", "comprising" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0053] In order to solve the problems in the background technology, the present application provides a hydraulic oil control method, a hydraulic oil circulation system and an excavator. The method provided by the present application is applied to the hydraulic oil circulation system. A temperature-controlled proportional valve is provided at the oil inlet of the hydraulic oil radiator in the system to collect the hydraulic oil temperature of the hydraulic oil circulation system in real time; the hydraulic oil control mode is determined according to the hydraulic oil temperature, and the hydraulic oil control mode is one of the full-open mode, the partial-open mode and the full-close mode; according to the hydraulic oil control mode, the valve opening of the temperature-controlled proportional valve is controlled to control the flow of hydraulic oil entering the hydraulic oil radiator. In the scheme provided by the present application, a temperature-controlled proportional valve is provided at the oil inlet of the hydraulic oil radiator, and the valve opening of the temperature-controlled proportional valve is controlled according to the hydraulic oil temperature, thereby controlling the flow of hydraulic oil entering the hydraulic oil radiator, so as to keep the temperature of the hydraulic oil stable and improve the performance of the excavator.

[0054] Reference Figure 1 , is a flow chart of a hydraulic oil control method provided in an embodiment of the present application, and is specifically described as follows:

[0055] S101. Collect the hydraulic oil temperature of the hydraulic oil circulation system in real time.

[0056] Use a preset oil temperature detector to collect the hydraulic oil temperature of the hydraulic oil flowing out of the main valve in the hydraulic oil circulation system in real time; or collect the hydraulic oil temperature of the hydraulic oil pumped out from the main pump in the hydraulic oil circulation system.

[0057] The oil temperature detector is provided with a sensor for collecting the temperature of the hydraulic oil. The sensor for collecting the temperature of the hydraulic oil may be a thermal couple, a thermal resistor, a digital temperature sensor or an integrated temperature sensor.

[0058] By collecting the hydraulic oil temperature of the hydraulic oil circulation system in real time, the hydraulic oil temperature of the hydraulic oil circulation system can be detected.

[0059] S102: Determine a hydraulic oil control mode according to the hydraulic oil temperature, where the hydraulic oil control mode is one of a fully open mode, a partially open mode, and a fully closed mode.

[0060] The present application determines the hydraulic oil control mode according to the hydraulic oil temperature. Different hydraulic oil control modes have different valve control strategies, which facilitates the subsequent control of the valve opening of the temperature-controlled proportional valve according to the hydraulic oil control mode.

[0061] S103. According to the hydraulic oil control mode, the valve opening of the temperature control proportional valve is controlled, thereby controlling the flow of hydraulic oil entering the hydraulic oil radiator.

[0062] Different hydraulic oil control modes correspond to different valve control strategies. After the hydraulic oil control mode is determined, the valve control strategy corresponding to the hydraulic oil control mode is used to control the valve opening of the temperature control proportional valve, thereby controlling the hydraulic oil flow entering the hydraulic oil radiator, wherein the hydraulic oil radiator is used to dissipate the heat of the hydraulic oil flowing through.

[0063] In the method provided in the embodiment of the present application, a temperature-controlled proportional valve is provided at the oil inlet of the hydraulic oil radiator in the hydraulic oil circulation system; the hydraulic oil temperature of the hydraulic oil circulation system is collected in real time; the hydraulic oil control mode is determined according to the hydraulic oil temperature, and the hydraulic oil control mode is one of the fully open mode, the partially open mode and the fully closed mode; according to the hydraulic oil control mode, the valve opening of the temperature-controlled proportional valve is controlled, thereby controlling the flow of hydraulic oil entering the hydraulic oil radiator. By collecting the hydraulic oil temperature of the hydraulic oil circulation system in real time, the valve opening of the temperature-controlled proportional valve provided at the oil inlet of the hydraulic oil radiator is controlled according to the hydraulic oil temperature, thereby controlling the flow of hydraulic oil entering the hydraulic oil radiator. In this way, the flow of hydraulic oil entering the hydraulic oil radiator is adjusted to ensure that the temperature of the hydraulic oil remains stable, and the performance of the hydraulic oil system according to the excavator and the response is provided.

[0064] Reference Figure 2 , is a structural schematic diagram of a hydraulic oil circulation system provided in an embodiment of the present application, and is specifically described as follows:

[0065] The hydraulic oil circulation system includes: a main pump 201, a main valve 202, an oil temperature detector 203, a first oil return passage 204, a second oil return passage 205 and a hydraulic oil tank 206; further, the first oil return passage includes a temperature control proportional valve 207 and a hydraulic oil radiator 208; wherein the temperature control proportional valve is arranged at the oil inlet of the hydraulic oil radiator. Preferably, the hydraulic oil circulation system can be configured in an excavator.

[0066] Furthermore, the oil inlets of the main pump and the main valve are connected by a pipeline; the first oil return passage includes a temperature-controlled proportional valve and a hydraulic oil radiator, the oil outlet of the temperature-controlled proportional valve is connected to the oil inlet of the hydraulic oil radiator by a pipeline, thereby forming a passage, the oil inlet of the temperature-controlled proportional valve is connected to the oil outlet of the main valve by a pipeline, and the oil outlet of the hydraulic oil radiator is connected to the hydraulic oil tank by a pipeline, thereby, the hydraulic oil flowing through the hydraulic oil radiator flows back to the hydraulic oil tank; the second oil return passage includes a back-pressure valve, wherein the oil inlet of the back-pressure valve is connected to the oil outlet of the main valve by a pipeline, and the oil outlet of the back-pressure valve is connected to the hydraulic oil tank by a pipeline, thereby, the hydraulic oil flowing through the back-pressure valve flows back to the hydraulic oil tank.

[0067] Furthermore, the back pressure valve is used to control the conduction state of the second oil return passage according to the hydraulic pressure value of the hydraulic oil and the opening pressure value of the back pressure valve. Specifically, when the pressure value of the hydraulic oil is greater than the opening pressure value of the back pressure valve, the back pressure valve is in a conducting state, that is, the valve of the back pressure valve is conducting at this time. When the pressure value of the hydraulic oil is not greater than the opening pressure value of the back pressure valve, the back pressure valve is in a non-conducting state, that is, the valve of the back pressure valve is closed at this time. Preferably, the greater the pressure value of the hydraulic oil, the greater the valve opening of the back pressure valve. The opening pressure value of the back pressure valve can be set according to actual needs.

[0068] The main pump is used to pump hydraulic oil from the hydraulic oil tank, and the pumped hydraulic oil flows to the main valve.

[0069] When the main valve is in the open state, the hydraulic oil pumped out from the main pump flows to the first oil return passage and the second oil return passage, the hydraulic oil passing through the first oil return passage flows back to the hydraulic oil tank, and the hydraulic oil passing through the second oil return passage flows back to the hydraulic oil tank.

[0070] The oil temperature detector is arranged at the oil outlet of the main valve, or arranged on the pipeline between the main pump and the main valve. Preferably, the oil temperature detector is arranged at different positions to detect different temperatures of the hydraulic oil. For example, when the oil temperature detector is arranged at the oil outlet of the main valve, it is used to detect the hydraulic oil temperature of the hydraulic oil flowing out of the main valve; when the oil temperature detector is arranged on the pipeline between the main pump and the main valve, it is used to detect the hydraulic oil temperature of the hydraulic oil pumped out from the main pump.

[0071] The first oil return passage includes a temperature-controlled proportional valve and a hydraulic oil radiator. The oil inlet of the temperature-controlled proportional valve serves as the oil inlet of the first oil return passage, and the oil outlet of the temperature-controlled proportional valve is connected to the hydraulic oil radiator. The temperature-controlled proportional valve is used to control the valve opening according to the hydraulic oil temperature detected by the oil temperature detector, thereby controlling the flow of hydraulic oil flowing into the hydraulic oil radiator, and the hydraulic oil passing through the hydraulic oil radiator flows back to the hydraulic oil tank.

[0072] In the hydraulic oil circulation system provided in the embodiment of the present application, the system includes a main pump, a main valve, an oil temperature detector, a first oil return passage, a second oil return passage and a hydraulic oil tank; wherein the first oil return passage includes a temperature-controlled proportional valve and a hydraulic oil radiator, and the oil outlet of the temperature-controlled proportional valve is connected to the hydraulic oil radiator; the main pump pumps out the hydraulic oil from the hydraulic oil tank, and then the pumped hydraulic oil flows to the first oil return passage and the second oil return passage after passing through the main valve, and then flows back to the hydraulic oil tank. The oil temperature detector detects the hydraulic oil temperature of the hydraulic oil, controls the valve opening of the temperature-controlled proportional valve according to the detected hydraulic oil temperature, and then controls the flow of hydraulic oil flowing into the hydraulic oil radiator, thereby controlling the heat dissipation of the hydraulic oil, so that the hydraulic oil temperature remains stable and the performance of the system is improved. In addition, the structural changes of the system are small and the transformation cost is low.

[0073] Reference Figure 3 , is a flow chart of a method for determining a hydraulic oil control mode according to a hydraulic oil temperature detected by an oil temperature detector provided in an embodiment of the present application, and the related description is as follows:

[0074] S301, determine whether the hydraulic oil temperature is lower than a preset first oil temperature; when the hydraulic oil temperature is lower than the first oil temperature, execute S302; when the hydraulic oil temperature is not lower than the first oil temperature, execute S303.

[0075] S302: Determine that the hydraulic oil control mode is the fully closed mode.

[0076] S303, determine whether the hydraulic oil temperature is greater than a preset second oil temperature. When the hydraulic oil temperature is greater than the second oil temperature, execute 304; when the hydraulic oil temperature is not greater than the second oil temperature, execute S305.

[0077] The second oil temperature in the present application is greater than the first oil temperature.

[0078] S304: Determine that the hydraulic oil control mode is the fully open mode.

[0079] S305: Determine that the hydraulic oil control mode is a partially open mode.

[0080] In the embodiment of the present application, the hydraulic oil temperature is compared with the first oil temperature and the second oil temperature to determine the hydraulic oil control mode, and the hydraulic oil control mode is one of a fully closed mode, a partially open mode and a fully open mode.

[0081] Furthermore, when the hydraulic oil control mode is the fully closed mode, the valve opening of the temperature control proportional valve is controlled to be zero. When the hydraulic oil temperature is lower than the first oil temperature, it means that the hydraulic oil temperature is low and no heat dissipation is required. At this time, the temperature control proportional valve is in a closed state, and no hydraulic oil flows from the temperature control proportional valve to the hydraulic oil radiator, which can quickly increase the hydraulic oil temperature, effectively reduce the fuel consumption of the vehicle, keep the hydraulic oil temperature in a stable state, and improve system performance.

[0082] When the hydraulic oil control mode is the partially open mode, the valve opening of the temperature-controlled proportional valve is controlled according to the hydraulic oil temperature and a preset linear control strategy; the linear control strategy includes a linear relationship between the hydraulic oil temperature and the valve opening. When the hydraulic oil control mode is the partially open mode, the valve opening of the temperature-controlled proportional valve is controlled according to the linear relationship between the hydraulic oil temperature and the valve opening in the linear control strategy. At this time, part of the hydraulic oil is cooled through the hydraulic oil radiator, thereby effectively reducing the temperature of the hydraulic oil, so that the excavator is limited in power and does not work overloaded, thereby improving the performance of the excavator.

[0083] When the hydraulic oil control mode is in full open mode, the valve opening of the temperature control proportional valve is controlled to be 100%. After the valve opening of the temperature control proportional valve is controlled to be 100%, the opening pressure value of the back pressure valve can be set according to the heat dissipation requirements of the system, thereby adjusting the hydraulic oil that enters the hydraulic oil radiator through the temperature control proportional valve for cooling, thereby dissipating and cooling part of the hydraulic oil, so that the hydraulic oil can be dissipated while meeting the heat dissipation requirements of the system, to ensure that the hydraulic oil temperature is in a stable state and to ensure the performance of the system.

[0084] For example, when the hydraulic oil temperature is lower than the threshold value K1 (equivalent to the first oil temperature), the temperature control valve opening is 0, and the hydraulic oil all enters the hydraulic oil tank through the back pressure valve. At this time, the amount of oil passing through the hydraulic oil radiator can be minimized to avoid cooling the hydraulic oil again when the temperature is already relatively low, resulting in a low temperature of the hydraulic oil and affecting the system performance; no hydraulic oil passes through the hydraulic oil radiator to quickly increase the hydraulic oil temperature. When the hydraulic oil temperature is higher than the threshold value K1 and lower than the threshold value K2 (equivalent to the second oil temperature), the temperature control valve opening is opened in a linear proportion to the hydraulic oil temperature, and part of the hydraulic oil enters the oil radiator (equivalent to the hydraulic oil radiator) for cooling, so that the vehicle power limit does not exceed 80% load operation; when the hydraulic oil temperature is higher than the threshold value K2, the temperature control valve opening is 100%, and the hydraulic oil is distributed according to the pressure set by the system back pressure valve. The flow of hydraulic oil flowing through the radiator and directly returning to the oil tank is distributed. According to the heat dissipation requirements of different hydraulic systems, the flow of hydraulic oil flowing through the oil radiator is usually between 30% and 40% of the total oil volume, so that the hydraulic oil enters the oil radiator and the vehicle works normally.

[0085] This application introduces a temperature-controlled proportional valve. In low-temperature conditions, no hydraulic oil enters the oil radiator for heat dissipation. In high-temperature conditions, the temperature-controlled proportional valve is in a fully open state. According to the heat dissipation requirements of the system, the opening pressure value of the back pressure valve is set to distribute the hydraulic oil passing through the temperature-controlled proportional valve to dissipate as much hydraulic oil as possible to keep the oil temperature of the hydraulic oil stable. When the hydraulic oil temperature is higher than the threshold value K1 and lower than the threshold value K2, the valve opening of the temperature-controlled proportional valve is adjusted according to the linear relationship between the hydraulic oil temperature and the opening ratio, thereby controlling the hydraulic oil flowing into the hydraulic oil radiator so that the temperature of the hydraulic oil after heat dissipation and the hydraulic oil not after heat dissipation is in a stable state after mixing, ensuring that the oil temperature is at the optimal temperature when the system is working, thereby improving the performance of the system.

[0086] Although the present invention depicts operations in a particular order, this should not be understood as requiring that the operations be performed in the particular order shown or in a sequential order.Multitasking and parallel processing may be advantageous under certain circumstances.

[0087] It should be understood that the various steps described in the method embodiments of the present disclosure may be performed in different orders and / or in parallel. In addition, the method embodiments may include additional steps and / or omit the steps shown. The scope of the present disclosure is not limited in this respect.

[0088] An embodiment of the present invention further provides a storage medium, which includes stored instructions, wherein when the instructions are executed, the device where the storage medium is located is controlled to execute the above-mentioned hydraulic oil control method.

[0089] The embodiment of the present invention further provides an electronic device, the structural diagram of which is shown in FIG. Figure 4 As shown, it specifically includes a memory 601 and one or more instructions 602, wherein the one or more instructions 602 are stored in the memory 601 and are configured to be executed by one or more processors 603 to perform the following operations:

[0090] Collecting the hydraulic oil temperature of the hydraulic oil circulation system in real time;

[0091] Determining a hydraulic oil control mode according to the hydraulic oil temperature, wherein the hydraulic oil control mode is one of a fully open mode, a partially open mode, and a fully closed mode;

[0092] According to the hydraulic oil control mode, the valve opening of the temperature control proportional valve is controlled, thereby controlling the flow of hydraulic oil entering the hydraulic oil radiator.

[0093] It should be noted that the information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data need to comply with relevant laws, regulations and standards in the relevant regions.

[0094] The specific implementation processes and derivative methods of the above-mentioned embodiments are all within the protection scope of the present invention.

[0095] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can refer to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system or system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can refer to the partial description of the method embodiment. The system and system embodiments described above are merely schematic, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without creative work.

[0096] Professionals may further appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in the above description according to function. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0097] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hydraulic oil control method, characterized in that: Applied to a hydraulic oil circulation system, a temperature-controlled proportional valve is arranged at the oil inlet of a hydraulic oil radiator in the hydraulic oil circulation system, and the temperature-controlled proportional valve is used to adjust the valve opening according to the temperature of the hydraulic oil to control the flow of hydraulic oil entering the hydraulic oil radiator. The method comprises: Collecting the hydraulic oil temperature of the hydraulic oil circulation system in real time; Determining a hydraulic oil control mode according to the hydraulic oil temperature, wherein the hydraulic oil control mode is one of a fully open mode, a partially open mode, and a fully closed mode; According to the hydraulic oil control mode, the valve opening of the temperature control proportional valve is controlled, thereby controlling the flow of hydraulic oil entering the hydraulic oil radiator.

2. The method according to claim 1, characterized in that: The real-time acquisition of the hydraulic oil temperature of the hydraulic oil circulation system includes: A preset oil temperature detector is used to collect the hydraulic oil temperature of the hydraulic oil flowing out of the main valve in the hydraulic oil circulation system in real time.

3. The method according to claim 1, characterized in that Determining the hydraulic oil control mode according to the hydraulic oil temperature includes: Determining whether the hydraulic oil temperature is less than a preset first oil temperature; When the hydraulic oil temperature is lower than the first oil temperature, determining that the hydraulic oil control mode is a full-off mode; When the hydraulic oil temperature is not less than the first oil temperature, determining whether the hydraulic oil temperature is greater than a preset second oil temperature, the second oil temperature being greater than the first oil temperature; When the hydraulic oil temperature is greater than the second oil temperature, determining that the hydraulic oil control mode is a fully open mode; When the hydraulic oil temperature is not greater than the second oil temperature, the hydraulic oil control mode is determined to be a partially open mode.

4. The method according to claim 1, characterized in that According to the hydraulic oil control mode, controlling the valve opening of the temperature control proportional valve includes: When the hydraulic oil control mode is the fully closed mode, the valve opening of the temperature control proportional valve is controlled to be zero; When the hydraulic oil control mode is a partially open mode, the valve opening of the temperature-controlled proportional valve is controlled according to the hydraulic oil temperature and a preset linear control strategy; When the hydraulic oil control mode is the fully open mode, the valve opening of the temperature control proportional valve is controlled to be 100%.

5. A hydraulic oil circulation system, characterized in that: include: A main pump, a main valve, an oil temperature detector, a first oil return passage, a second oil return passage and a hydraulic oil tank; The main pump is used to pump out hydraulic oil from the hydraulic oil tank, and the pumped hydraulic oil flows to the main valve; When the main valve is in an open state, the hydraulic oil flows to the first oil return passage and the second oil return passage, the hydraulic oil passing through the first oil return passage flows back to the hydraulic oil tank, and the hydraulic oil passing through the second oil return passage flows back to the hydraulic oil tank; The oil temperature detector is used to detect the hydraulic oil temperature of the hydraulic oil flowing out of the main valve; The first oil return passage includes a temperature-controlled proportional valve and a hydraulic oil radiator. The oil inlet of the temperature-controlled proportional valve serves as the oil inlet of the first oil return passage, and the oil outlet of the temperature-controlled proportional valve is connected to the hydraulic oil radiator. The temperature-controlled proportional valve is used to control the valve opening according to the hydraulic oil temperature detected by the oil temperature detector, thereby controlling the flow rate of the hydraulic oil flowing into the hydraulic oil radiator, and the hydraulic oil passing through the hydraulic oil radiator flows back to the hydraulic oil tank.

6. The system according to claim 5, characterized in that The second oil return passage comprises: Back pressure valve; The back pressure valve is used to control the conduction state of the second oil return passage according to the hydraulic pressure value of the hydraulic oil and the opening pressure value of the back pressure valve.

7. The system according to claim 6, characterized in that The process of the temperature-controlled proportional valve being used to control the valve opening according to the hydraulic oil temperature detected by the oil temperature detector includes: According to the hydraulic oil temperature, a hydraulic oil control mode is determined, and the hydraulic oil control mode is one of a fully open mode, a partially open mode, and a fully closed mode; according to the hydraulic oil control mode, the valve opening of the temperature-controlled proportional valve is controlled.

8. The system according to claim 7, characterized in that The process of the temperature-controlled proportional valve determining the hydraulic oil control mode according to the hydraulic oil temperature includes: Determining whether the hydraulic oil temperature is less than a preset first oil temperature; When the hydraulic oil temperature is lower than the first oil temperature, determining that the hydraulic oil control mode is a full-off mode; When the hydraulic oil temperature is not less than the first oil temperature, determining whether the hydraulic oil temperature is greater than a preset second oil temperature, the second oil temperature being greater than the first oil temperature; When the hydraulic oil temperature is greater than the second oil temperature, determining that the hydraulic oil control mode is a fully open mode; When the hydraulic oil temperature is not greater than the second oil temperature, the hydraulic oil control mode is determined to be a partially open mode.

9. The system according to claim 8, characterized in that The process of controlling the valve opening of the temperature-controlled proportional valve according to the hydraulic oil control mode includes: When the hydraulic oil control mode is the fully closed mode, the valve opening of the temperature control proportional valve is controlled to be zero; When the hydraulic oil control mode is a partially open mode, the valve opening of the temperature-controlled proportional valve is controlled according to the hydraulic oil temperature and a preset linear control strategy; When the hydraulic oil control mode is the fully open mode, the valve opening of the temperature control proportional valve is controlled to be 100%.

10. An excavator, characterized in that: The excavator comprises the hydraulic oil circulation system according to any one of claims 5-9.

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