Hydraulic oil control method, hydraulic oil circulation system, and excavator

Abstract

The application provides a hydraulic oil control method, a hydraulic oil circulating system and an excavator, and is applied to the technical field of engineering machinery. The hydraulic oil control method comprises the following steps: a temperature control proportional valve is arranged at an oil inlet of a hydraulic oil radiator in a hydraulic oil circulating system; the temperature of the hydraulic oil in the hydraulic oil circulating system is collected in real time; the hydraulic oil control mode is determined according to the temperature of the hydraulic oil, and the hydraulic oil control mode is one of a full opening mode, a partial opening mode and a full closing mode; the valve opening degree of the temperature control proportional valve is controlled according to the hydraulic oil control mode, so as to control the hydraulic oil flow entering the hydraulic oil radiator. The temperature of the hydraulic oil in the hydraulic oil circulating system is collected in real time, the valve opening degree of the temperature control proportional valve arranged at the oil inlet of the hydraulic oil radiator is controlled according to the temperature of the hydraulic oil, and the hydraulic oil flow entering the hydraulic oil radiator is controlled. The hydraulic oil flow entering the hydraulic oil radiator is adjusted, the temperature of the hydraulic oil is maintained stable, and the performance of the hydraulic oil system of the excavator is provided.

Description

TECHNICAL FIELD

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

[0002] The excavator is widely used in various construction fields, such as water conservancy projects, transportation, circuit engineering and mine excavation, etc., and is an indispensable main mechanical equipment in various earthwork construction.

[0003] The temperature of the hydraulic oil of the excavator has an important influence 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 proportion, and the hydraulic oil flow entering the oil radiator cannot be adjusted, so that the temperature of the hydraulic oil is difficult to maintain stable, and the performance of the excavator is reduced. SUMMARY

[0004] Therefore, the present application provides a hydraulic oil control method, a hydraulic oil circulation system and an excavator. The present application provides a scheme of setting a temperature control proportional valve at the oil inlet of the hydraulic oil radiator, controlling the valve opening of the temperature control proportional valve according to the temperature of the hydraulic oil, thereby controlling the hydraulic oil flow entering the hydraulic oil radiator, so that the temperature of the hydraulic oil is maintained stable, and the performance of the excavator is improved.

[0005] To achieve the above-mentioned purpose, the embodiments of the present application provide the following technical scheme:

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

[0007] Real-time collection of the hydraulic oil temperature of the hydraulic oil circulation system;

[0008] Determination of a hydraulic oil control mode according to the hydraulic oil temperature, wherein the hydraulic oil control mode is one of a full opening mode, a partial opening mode and a full closing mode;

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

[0010] In the above-mentioned method, the real-time collection of the hydraulic oil temperature of the hydraulic oil circulation system can comprise the following steps:

[0011] Real-time collection of the hydraulic oil temperature of the hydraulic oil flowing out from the main valve in the hydraulic oil circulation system by using a preset oil temperature detector.

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

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

[0014] when the hydraulic oil is less than the first oil temperature, determining the hydraulic oil control mode as a full-off mode;

[0015] when the hydraulic oil 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 is greater than the second oil temperature, determining the hydraulic oil control mode as a full-on mode;

[0017] when the hydraulic oil is not greater than the second oil temperature, determining the hydraulic oil control mode as a partial-on mode.

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

[0019] when the hydraulic oil control mode is the full-off mode, controlling the valve opening degree of the temperature-controlled proportional valve as zero;

[0020] when the hydraulic oil control mode is the partial-on mode, controlling the valve opening degree of the temperature-controlled proportional valve according to the hydraulic oil temperature and a preset linear control strategy;

[0021] when the hydraulic oil control mode is the full-on mode, controlling the valve opening degree of the temperature-controlled proportional valve as 100%.

[0022] A hydraulic oil circulation system, comprising:

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

[0024] the main pump is configured to pump 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, hydraulic oil flows to the first oil return path and the second oil return path, the hydraulic oil passing through the first oil return path flows back to the hydraulic oil tank, and the hydraulic oil passing through the second oil return path flows back to the hydraulic oil tank;

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

[0027] The first oil return passage comprises a temperature control proportional valve and a hydraulic oil radiator, an oil inlet of the temperature control proportional valve serving as an oil inlet of the first oil return passage, and an oil outlet of the temperature control proportional valve being connected with the hydraulic oil radiator; the temperature control proportional valve is used to control the valve opening degree according to the hydraulic oil temperature detected by the oil temperature detector, so as to control the flow 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 system, the second oil return passage comprises:

[0029] A 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 value of the hydraulic oil and the opening pressure value of the back pressure valve.

[0031] In the system, the process in which the temperature control proportional valve is used to control the valve opening degree according to the hydraulic oil temperature detected by the oil temperature detector comprises:

[0032] According to the hydraulic oil temperature, a hydraulic oil control mode is determined, the hydraulic oil control mode being one of a full opening mode, a partial opening mode and a full closing mode; and the valve opening degree of the temperature control proportional valve is controlled according to the hydraulic oil control mode.

[0033] In the system, the process in which the temperature control proportional valve determines the hydraulic oil control mode according to the hydraulic oil temperature comprises:

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

[0035] When the hydraulic oil is less than the first oil temperature, it is determined that the hydraulic oil control mode is a full closing mode;

[0036] When the hydraulic oil is not less than the first oil temperature, it is judged 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 is greater than the second oil temperature, it is determined that the hydraulic oil control mode is a full opening mode;

[0038] When the hydraulic oil is not greater than the second oil temperature, it is determined that the hydraulic oil control mode is a partial opening mode.

[0039] In the system, the process in which the temperature control proportional valve controls the valve opening degree of the temperature control proportional valve according to the hydraulic oil control mode comprises:

[0040] When the hydraulic oil control mode is a full closing mode, the valve opening degree of the temperature control proportional valve is controlled to be zero;

[0041] When the hydraulic oil control mode is the partial opening mode, the valve opening degree of the temperature control 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 full opening mode, the valve opening degree of the temperature control proportional valve is controlled to be 100%.

[0043] A excavator, comprising the hydraulic oil circulating system according to any one of the preceding embodiments.

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

[0045] The present application provides a hydraulic oil control method, a hydraulic oil circulating system and a excavator, comprising, a temperature control proportional valve is arranged at the oil inlet of the hydraulic oil radiator in the hydraulic oil circulating system; the hydraulic oil temperature of the hydraulic oil circulating system is collected in real time; the hydraulic oil control mode is determined according to the hydraulic oil temperature, the hydraulic oil control mode is one of the full opening mode, the partial opening mode and the full closing mode; the valve opening degree of the temperature control proportional valve is controlled according to the hydraulic oil control mode, and then the hydraulic oil flow entering the hydraulic oil radiator is controlled. By collecting the hydraulic oil temperature of the hydraulic oil circulating system in real time, the valve opening degree of the temperature control proportional valve arranged at the oil inlet of the hydraulic oil radiator is controlled according to the hydraulic oil temperature, so as to control the hydraulic oil flow entering the hydraulic oil radiator. The hydraulic oil flow entering the hydraulic oil radiator is adjusted, the temperature of the hydraulic oil is maintained stable, and the performance of the hydraulic oil system according to the excavator is provided. BRIEF DESCRIPTION OF DRAWINGS

[0046] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of the provided drawings.

[0047] Figure 1 A flow chart of a hydraulic oil control method provided by the embodiment of the present application;

[0048] Figure 2 A structural schematic diagram of a hydraulic oil circulating system provided by the embodiment of the present application;

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

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

[0051] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0052] In the present application, the terms "comprising", "containing" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitation, the element defined by the sentence "including a…" does not exclude the presence of other identical elements in the process, method, article or equipment including the element.

[0053] To solve the problems in the background art, 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 control proportional valve is arranged at an oil inlet of a hydraulic oil radiator in the system. The hydraulic oil temperature of the hydraulic oil circulation system is collected in real time. According to the hydraulic oil temperature, the hydraulic oil control mode is determined. The hydraulic oil control mode is one of a full opening mode, a partial opening mode and a full closing mode. According to the hydraulic oil control mode, the valve opening degree of the temperature control proportional valve is controlled, so as to control the hydraulic oil flow entering the hydraulic oil radiator. In the scheme provided by the present application, the temperature control proportional valve is arranged at the oil inlet of the hydraulic oil radiator. The valve opening degree of the temperature control proportional valve is controlled according to the hydraulic oil temperature, so as to control the hydraulic oil flow entering the hydraulic oil radiator. The temperature of the hydraulic oil is kept stable, and the performance of the excavator is improved.

[0054] Reference Figure 1 The flow chart of the hydraulic oil control method provided by the embodiments of the present application is described as follows:

[0055] S101, the hydraulic oil temperature of the hydraulic oil circulation system is collected in real time.

[0056] The hydraulic oil temperature of the hydraulic oil flowing out of the main valve in the hydraulic oil circulation system is collected in real time by using a preset oil temperature detector. Or the hydraulic oil temperature of the hydraulic oil pumped out of the main pump in the hydraulic oil circulation system is collected.

[0057] A sensor for collecting the temperature of the hydraulic oil is arranged in the oil temperature detector. The sensor for collecting the temperature of the hydraulic oil can be a hot junction, a thermal resistance, a digital temperature sensor or an integrated temperature sensor.

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

[0059] In S102, the hydraulic oil control mode is determined according to the hydraulic oil temperature, and the hydraulic oil control mode is one of a full opening mode, a partial opening mode and a full closing mode.

[0060] The hydraulic oil control mode is determined according to the hydraulic oil temperature in the application, different hydraulic oil control modes have different valve control strategies, and the valve opening degree of the temperature control proportional valve can be controlled according to the hydraulic oil control mode.

[0061] In S103, the valve opening degree of the temperature control proportional valve is controlled according to the hydraulic oil control mode, and then the hydraulic oil flow entering the hydraulic oil radiator is controlled.

[0062] Different hydraulic oil control modes correspond to different valve control strategies, after the hydraulic oil control mode is determined, the valve opening degree of the temperature control proportional valve is controlled using the valve control strategy corresponding to the hydraulic oil control mode, so as to control the hydraulic oil flow entering the hydraulic oil radiator, wherein the hydraulic oil radiator is used for radiating the hydraulic oil flowing therethrough.

[0063] In the method provided by the application, the temperature control proportional valve is arranged 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 a full opening mode, a partial opening mode and a full closing mode; and the valve opening degree of the temperature control proportional valve is controlled according to the hydraulic oil control mode, and then the hydraulic oil flow entering the hydraulic oil radiator is controlled. By collecting the hydraulic oil temperature of the hydraulic oil circulation system in real time, the valve opening degree of the temperature control proportional valve arranged at the oil inlet of the hydraulic oil radiator is controlled according to the hydraulic oil temperature, so as to control the hydraulic oil flow entering the hydraulic oil radiator. The hydraulic oil flow entering the hydraulic oil radiator is adjusted, the temperature of the hydraulic oil is maintained stable, and the performance of the hydraulic oil system of the excavator is provided.

[0064] Reference Figure 2 A structure schematic diagram of a hydraulic oil circulation system is provided in the application, and the specific description is as follows:

[0065] The hydraulic oil circulation system comprises 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 comprises 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] Further, the inlet of the main pump and the main valve is connected by a pipeline; the first return oil passage includes a temperature control proportional valve and a hydraulic oil radiator, the outlet of the temperature control proportional valve is connected with the inlet of the hydraulic oil radiator by a pipeline, thereby forming a passage, the inlet of the temperature control proportional valve is connected with the outlet of the main valve by a pipeline, and the outlet of the hydraulic oil radiator is connected with the hydraulic oil tank by a pipeline, so that the hydraulic oil flowing through the hydraulic oil radiator returns to the hydraulic oil tank; the second return oil passage includes a back pressure valve, wherein the inlet of the back pressure valve is connected with the outlet of the main valve by a pipeline, and the outlet of the back pressure valve is connected with the hydraulic oil tank by a pipeline, so that the hydraulic oil flowing through the back pressure valve returns to the hydraulic oil tank.

[0067] Further, the back pressure valve is used to control the conduction state of the second return oil passage according to the hydraulic oil pressure value and the opening pressure value of the back pressure valve, specifically, when the hydraulic oil pressure value is greater than the opening pressure value of the back pressure valve, the back pressure valve is in a conduction state, that is, the valve of the back pressure valve is open at this time, and when the hydraulic oil pressure value is not greater than the opening pressure value of the back pressure valve, the back pressure valve is in a non-conduction state, that is, the valve of the back pressure valve is closed at this time. Preferably, the greater the hydraulic oil pressure value, the greater the valve opening degree 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 an open state, the hydraulic oil pumped from the main pump flows to the first return oil passage and the second return oil passage, the hydraulic oil passing through the first return oil passage returns to the hydraulic oil tank, and the hydraulic oil passing through the second return oil passage returns to the hydraulic oil tank.

[0070] The oil temperature detector is arranged at the outlet of the main valve or on the pipeline between the main pump and the main valve. Preferably, the position of the oil temperature detector is different, and the detected hydraulic oil temperature is different, for example, when the oil temperature detector is arranged at the 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 from the main pump.

[0071] The first return oil passage includes a temperature control proportional valve and a hydraulic oil radiator, the inlet of the temperature control proportional valve is used as the inlet of the first return oil passage, and the outlet of the temperature control proportional valve is connected with the hydraulic oil radiator; the temperature control proportional valve is used to control the valve opening degree according to the hydraulic oil temperature detected by the oil temperature detector, so as to control the flow of the hydraulic oil flowing into the hydraulic oil radiator, and the hydraulic oil passing through the hydraulic oil radiator returns to the hydraulic oil tank.

[0072] The hydraulic oil circulating system provided by the embodiment of the application comprises a main pump, a main valve, an oil temperature detector, a first oil return path, a second oil return path and a hydraulic oil tank; the first oil return path comprises a temperature control proportional valve and a hydraulic oil radiator, and the oil outlet of the temperature control proportional valve is connected with the hydraulic oil radiator; the main pump pumps hydraulic oil from the hydraulic oil tank, and then the pumped hydraulic oil flows to the first oil return path and the second oil return path after passing through the main valve, and then returns to the hydraulic oil tank. The oil temperature detector detects the hydraulic oil temperature, controls the valve opening degree of the temperature control proportional valve according to the detected hydraulic oil temperature, and then controls the hydraulic oil flow rate flowing into the hydraulic oil radiator, so as to control the heat dissipation of the hydraulic oil, keep the hydraulic oil temperature stable, and improve the performance of the system. The structure of the system is slightly changed, and the modification cost is low.

[0073] Reference Figure 3 The method flowchart for determining the hydraulic oil control mode according to the hydraulic oil temperature detected by the oil temperature detector provided by the embodiment of the application is described as follows:

[0074] S301, it is judged whether the hydraulic oil temperature is less than a preset first oil temperature; when the hydraulic oil is less than the first oil temperature, S302 is executed; when the hydraulic oil is not less than the first oil temperature, S303 is executed.

[0075] S302, the hydraulic oil control mode is determined as a full-off mode.

[0076] S303, it is judged whether the hydraulic oil temperature is greater than a preset second oil temperature; when the hydraulic oil is greater than the second oil temperature, S304 is executed; when the hydraulic oil is not greater than the second oil temperature, S305 is executed.

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

[0078] S304, the hydraulic oil control mode is determined as a full-on mode.

[0079] S305, the hydraulic oil control mode is determined as a partial-on mode.

[0080] In the embodiment of the application, the hydraulic oil control mode is determined by comparing the hydraulic oil temperature with the first oil temperature and the second oil temperature, and the hydraulic oil control mode is one of the full-off mode, the partial-on mode and the full-on mode.

[0081] Further, when the hydraulic oil control mode is the full-off mode, the valve opening degree of the temperature control proportional valve is zero. When the hydraulic oil temperature is less than the first oil temperature, it indicates that the oil temperature of the hydraulic oil is low, and there is no need to perform heat dissipation; at this time, the temperature control proportional valve is in a closed state, no hydraulic oil flows from the temperature control proportional valve to the hydraulic oil radiator, the oil temperature of the hydraulic oil can be quickly raised, the fuel consumption of the whole vehicle is effectively reduced, the temperature of the hydraulic oil is kept in a stable state, and the performance of the system is improved.

[0082] When the hydraulic oil control mode is the partial opening mode, the valve opening degree of the temperature control 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 degree, and the valve opening degree of the temperature control proportional valve is controlled according to the linear relationship between the hydraulic oil temperature and the valve opening degree in the linear control strategy when the hydraulic oil control mode is the partial opening mode, at this time, part of the hydraulic oil is cooled by the hydraulic oil radiator, thereby effectively reducing the temperature of the hydraulic oil, so that the excavator works within the power limit and the performance of the excavator is improved.

[0083] When the hydraulic oil control mode is the full opening mode, the valve opening degree of the temperature control proportional valve is controlled to be 100%. After the valve opening degree 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 requirement of the system, thereby the hydraulic oil cooled by the temperature control proportional valve entering the hydraulic oil radiator can be adjusted, and thereby part of the hydraulic oil can be cooled and heat dissipated, so that the hydraulic oil is cooled and heat dissipated to meet the heat dissipation requirement of the system, to ensure that the temperature of the hydraulic oil is in a stable state and the performance of the system is ensured.

[0084] For example, when the hydraulic oil temperature is lower than a threshold K1 (equivalent to a first oil temperature), the temperature control valve opening degree is 0, and all the hydraulic oil 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 maximally reduced, and the temperature of the hydraulic oil is prevented from being cooled again when the temperature is already relatively low, so as to prevent the temperature of the hydraulic oil from being too low and affecting the performance of the system; no hydraulic oil passing through the hydraulic oil radiator can quickly increase the temperature of the hydraulic oil. When the hydraulic oil temperature is higher than the threshold K1 and lower than a threshold K2 (equivalent to a second oil temperature), the temperature control valve opening degree is linearly opened according to the hydraulic oil temperature, and part of the hydraulic oil enters the oil radiator (equivalent to the hydraulic oil radiator) to be cooled, so that the power limit of the whole vehicle does not exceed 80% of the load working; when the hydraulic oil temperature is higher than the threshold K2, the temperature control valve opening degree is 100%, and the hydraulic oil is distributed to flow through the radiator and directly return to the tank according to the pressure set by the system back pressure valve, according to the heat dissipation requirement of different hydraulic systems, the flow rate of the hydraulic oil flowing through the oil radiator is usually between 30%-40% of the total oil amount, so that the hydraulic oil enters the oil radiator and the whole vehicle works normally.

[0085] The application introduces a temperature control proportional valve, in the case of low temperature, no hydraulic oil enters the oil radiator to dissipate heat, in the case of high temperature, the temperature control proportional valve is in full open state, and the opening pressure value of the back pressure valve is set according to the heat dissipation demand of the system, the hydraulic oil passing through the temperature control proportional valve is distributed, and the hydraulic oil is as much as possible to dissipate heat, so that the oil temperature of the hydraulic oil is kept stable. When the hydraulic oil temperature is higher than threshold K1 and lower than threshold K2, the valve opening of the temperature control proportional valve is adjusted according to the linear relationship between the hydraulic oil temperature and the opening ratio, so that the hydraulic oil flowing into the hydraulic oil radiator can be controlled, so that the temperature of the mixed hydraulic oil after heat dissipation and non-heat dissipation is in a stable state, the oil temperature is kept at the best temperature during system operation, and the performance of the system is improved.

[0086] Although the present application has described the operations in a particular order, this should not be understood as requiring the operations to be performed in the particular order shown or in a sequential order. Under certain circumstances, multitasking and parallel processing can be advantageous.

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

[0088] The embodiment of the present application also provides a storage medium, which comprises stored instructions, wherein when the instructions are executed, the device where the storage medium is located performs the hydraulic oil control method described above.

[0089] The embodiment of the present application also provides an electronic device, a structural schematic diagram of which is shown in Figure 4 The electronic device specifically comprises 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 perform the one or more instructions 602 by the one or more processors 603 to perform the following operations:

[0090] Real-time acquisition of the hydraulic oil temperature of the hydraulic oil circulation system;

[0091] According to the hydraulic oil temperature, determining a hydraulic oil control mode, the hydraulic oil control mode being one of a full open mode, a partial open mode and a full close mode;

[0092] According to the hydraulic oil control mode, controlling the valve opening of the temperature control proportional valve, and further controlling the hydraulic oil flow 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 for analysis, stored data, displayed data, etc.) involved in the present application are all information and data authorized by the user or authorized by all parties, and the collection, use and processing of related data need to comply with relevant laws, regulations and standards in the relevant region.

[0094] The specific implementation process of each of the above embodiments and its derivatives are within the protection scope of the present application.

[0095] Each of the embodiments in the specification is described in a progressive manner, and the same or similar parts between each embodiment can be referred to each other. Each embodiment focuses on the difference from other embodiments. In particular, for the system or system embodiment, since it is basically similar to the method embodiment, it is described more simply, and the relevant part can be referred to the part of the method embodiment. The above described system and system embodiment are only illustrative, and the units described as separate components can be or can not be physically separated, and the components displayed as units can be or can not be physical units, that is, they can be located in one place or distributed to multiple network units. Part or all of the modules can be selected to achieve the purpose of the embodiment scheme according to the actual needs. Those skilled in the art can understand and implement without creative labor.

[0096] The skilled person can further realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be realized by electronic hardware, computer software or a combination of both. In order to clearly illustrate the interchangeability of hardware and software, the components and steps of each example have been described in the above description. Whether the functions are realized in hardware or software depends on the specific application and design constraints of the technical scheme. The skilled person can use different methods to realize the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

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

Claims

1. A hydraulic oil control method characterized by, The application is applied to a hydraulic oil circulating system, a temperature control proportional valve is arranged at an oil inlet of a hydraulic oil radiator in the hydraulic oil circulating system, the temperature control proportional valve is used for adjusting a valve opening degree according to a temperature of the hydraulic oil to control a hydraulic oil flow entering the hydraulic oil radiator, and the method comprises the following steps: Real-time collection of the hydraulic oil temperature of the hydraulic oil circulating system; Determination of whether the hydraulic oil temperature is less than a preset first oil temperature; When the hydraulic oil is less than the first oil temperature, the hydraulic oil control mode is determined as a full-off mode; when the hydraulic oil control mode is the full-off mode, the valve opening degree of the temperature control proportional valve is controlled as zero; When the hydraulic oil is not less than the first oil temperature, determination of 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 is greater than the second oil temperature, the hydraulic oil control mode is determined as a full-on mode; when the hydraulic oil control mode is the full-on mode, the valve opening degree of the temperature control proportional valve is controlled as 100%; When the hydraulic oil is not greater than the second oil temperature, the hydraulic oil control mode is determined as a partial-on mode; when the hydraulic oil control mode is the partial-on mode, the valve opening degree of the temperature control proportional valve is controlled according to the hydraulic oil temperature and a preset linear control strategy; Control of the hydraulic oil flow entering the hydraulic oil radiator according to the valve opening degree of the temperature control proportional valve.

2. The method of claim 1, wherein, The real-time collection of the hydraulic oil temperature of the hydraulic oil circulating system comprises the following steps: Real-time collection of the hydraulic oil temperature of the hydraulic oil flowing out of a main valve in the hydraulic oil circulating system by using a preset oil temperature detector.

3. A hydraulic oil circulation system characterized by comprising: Comprise: 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 for pumping hydraulic oil out of 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 for detecting the hydraulic oil temperature of the hydraulic oil flowing out of the main valve; The first oil return passage comprises a temperature control proportional valve and a hydraulic oil radiator, an oil inlet of the temperature control proportional valve serving as an oil inlet of the first oil return passage, and an oil outlet of the temperature control proportional valve being connected with the hydraulic oil radiator; the temperature control proportional valve is used for controlling the valve opening degree according to the hydraulic oil temperature detected by the oil temperature detector, so as to control the flow 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; The process that the temperature control proportional valve is used for controlling the valve opening degree according to the hydraulic oil temperature detected by the oil temperature detector comprises the following steps: Determination of whether the hydraulic oil temperature is less than a preset first oil temperature; When the hydraulic oil is less than the first oil temperature, the hydraulic oil control mode is determined as a full-off mode; when the hydraulic oil control mode is the full-off mode, the valve opening degree of the temperature control proportional valve is controlled as zero; When the hydraulic oil is not less than the first oil temperature, determination of 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 is greater than the second oil temperature, the hydraulic oil control mode is determined as a full opening mode; when the hydraulic oil control mode is the full opening mode, the valve opening degree of the temperature control proportional valve is controlled as 100%; When the hydraulic oil is not greater than the second oil temperature, the hydraulic oil control mode is determined as a partial opening mode; when the hydraulic oil control mode is the partial opening mode, the valve opening degree of the temperature control proportional valve is controlled according to the hydraulic oil temperature and a preset linear control strategy.

4. The system of claim 3, wherein, The second oil return passage comprises: A back pressure valve; The back pressure valve is used to control the conduction state of the second oil return passage according to the hydraulic value of the hydraulic oil and the opening pressure value of the back pressure valve.

5. An excavator characterized by comprising: The excavator comprises the hydraulic oil circulation system of any one of claims 3-4.

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