阅读说明：本技术 主液压系统功率的调节方法、系统及全液压轮式挖掘机 (Method and system for adjusting power of main hydraulic system and full-hydraulic wheel type excavator ) 是由 王建华 王杏 贾志伟 于 2020-05-26 设计创作，主要内容包括：本申请提供了一种主液压系统功率的调节方法、系统及全液压轮式挖掘机,涉及全液压轮式挖掘机技术领域,其中,调节方法包括获取全液压轮式挖掘机的主液压系统预设功率,和至少一个可调节次液压系统对应的次液压系统预设功率,然后在全液压轮式挖掘机工作时,检测各可调节次液压系统的工作状态；若检测到某个可调节次液压系统处于未工作状态,则基于主液压系统预设功率和该可调节次液压系统对应的次液压系统预设功率,确定主液压系统实际功率。这样,可以在一定程度上提高发动机输出功率在主液压系统中的利用率,减少能量损失。(The application provides a method and a system for adjusting power of a main hydraulic system and a full-hydraulic wheel type excavator, and relates to the technical field of full-hydraulic wheel type excavators, wherein the adjusting method comprises the steps of obtaining preset power of the main hydraulic system of the full-hydraulic wheel type excavator and preset power of a secondary hydraulic system corresponding to at least one adjustable secondary hydraulic system, and then detecting the working state of each adjustable secondary hydraulic system when the full-hydraulic wheel type excavator works; and if the fact that a certain adjustable secondary hydraulic system is in a non-working state is detected, determining the actual power of the main hydraulic system based on the preset power of the main hydraulic system and the preset power of the secondary hydraulic system corresponding to the adjustable secondary hydraulic system. Therefore, the utilization rate of the output power of the engine in the main hydraulic system can be improved to a certain extent, and energy loss is reduced.)

1. A method for regulating power of a main hydraulic system is characterized by comprising the following steps:

acquiring preset power of a main hydraulic system of the full-hydraulic wheel type excavator and preset power of a secondary hydraulic system corresponding to at least one adjustable secondary hydraulic system;

when the full-hydraulic wheel type excavator works, detecting the working state of each adjustable secondary hydraulic system;

and if the fact that a certain adjustable secondary hydraulic system is in a non-working state is detected, determining the actual power of the primary hydraulic system based on the preset power of the primary hydraulic system and the preset power of the secondary hydraulic system corresponding to the adjustable secondary hydraulic system.

2. The method of adjusting of claim 1, wherein said detecting an operational status of each of said adjustable secondary hydraulic systems while said fully hydraulic wheeled excavator is operational comprises:

acquiring a preset working pressure threshold value of each adjustable secondary hydraulic system, and detecting the pressure value of each adjustable secondary hydraulic system when the full-hydraulic wheel type excavator works;

if the pressure value of one adjustable secondary hydraulic system is not larger than the preset working pressure threshold value corresponding to the adjustable secondary hydraulic system, determining that the adjustable secondary hydraulic system is in a non-working state;

and if the pressure value of one adjustable secondary hydraulic system is detected to be larger than the preset working pressure threshold value corresponding to the adjustable secondary hydraulic system, determining that the adjustable secondary hydraulic system is in a working state.

3. The method of claim 1, wherein if it is detected that one of the adjustable secondary hydraulic systems is in an inoperative state, determining the actual power of the primary hydraulic system based on the preset power of the primary hydraulic system and the preset power of the secondary hydraulic system corresponding to the adjustable secondary hydraulic system comprises:

if the fact that a certain adjustable secondary hydraulic system is in a non-working state is detected, determining that the actual power threshold of a primary hydraulic system is the sum of the preset power of the primary hydraulic system and the preset power of a secondary hydraulic system corresponding to the adjustable secondary hydraulic system;

and determining the actual power of the main hydraulic system to be any value between the preset power of the main hydraulic system and the actual power threshold of the main hydraulic system based on the actual power threshold of the main hydraulic system and the preset power of the main hydraulic system.

4. The method of claim 3, wherein determining that the threshold of the actual power of the primary hydraulic system is the sum of the preset power of the primary hydraulic system and the preset power of the secondary hydraulic system corresponding to the adjustable secondary hydraulic system if the adjustable secondary hydraulic system is detected to be in the non-operating state comprises:

acquiring a preset torque of a main hydraulic system of the full hydraulic wheel type excavator at the same engine speed and a preset torque of a secondary hydraulic system corresponding to at least one adjustable secondary hydraulic system;

if the fact that a certain adjustable secondary hydraulic system is in a non-working state is detected, determining that the actual torque threshold of a primary hydraulic system is the sum of the preset torque of the primary hydraulic system and the preset torque of a secondary hydraulic system corresponding to the adjustable secondary hydraulic system;

determining the main hydraulic system actual power threshold based on the engine speed and the main hydraulic system actual torque threshold.

5. The method of adjusting of claim 1, wherein after said detecting an operational status of each of said adjustable secondary hydraulic systems while said fully hydraulic wheeled excavator is operational, said method of adjusting further comprises:

and if the certain adjustable secondary hydraulic system is detected to be in a working state, controlling the adjustable secondary hydraulic system to keep the preset power of the secondary hydraulic system corresponding to the adjustable secondary hydraulic system unchanged.

6. An adjustment method according to any one of claims 1-5, characterised in that the adjustable secondary hydraulic system is a steering hydraulic system or a braking hydraulic system.

7. A power regulating system of a main hydraulic system is characterized by comprising a pressure sensor and a controller, wherein the pressure sensor is connected with the controller;

the pressure sensor is arranged on a hydraulic loop of the adjustable secondary hydraulic system and used for detecting the pressure value of the adjustable secondary hydraulic system in real time;

the controller is used for receiving the pressure value of the adjustable secondary hydraulic system, judging the working state of the adjustable secondary hydraulic system according to the pressure value of the adjustable secondary hydraulic system, and determining the actual power of the main hydraulic system based on the preset power of the main hydraulic system and the preset power of the secondary hydraulic system corresponding to the adjustable secondary hydraulic system if the adjustable secondary hydraulic system is detected to be in the non-working state.

8. A fully hydraulic wheeled excavator comprising a primary hydraulic system power regulation system as claimed in claim 7.

9. The all hydraulic wheeled excavator of claim 8 further including a display screen connected to the controller and located within the cab of the all hydraulic wheeled excavator for real time display of engine speed and torque and power of the primary and secondary hydraulic systems.

10. The full hydraulic wheel type excavator according to claim 8, wherein an electrically controlled main pump is arranged in the main hydraulic system of the full hydraulic wheel type excavator, and the electrically controlled main pump is connected with the controller, wherein the electrically controlled main pump is used for receiving a signal for adjusting the actual power of the main hydraulic system sent by the controller.

Technical Field

The application relates to the technical field of full-hydraulic wheel type excavators, in particular to a method and a system for adjusting power of a main hydraulic system and a full-hydraulic wheel type excavator.

Background

At present, a full hydraulic wheel type excavator comprises a plurality of hydraulic systems, wherein a main hydraulic system, a steering hydraulic system and a brake hydraulic system are taken as main parts, and the output power of an engine is simultaneously supplied to each hydraulic system. The main hydraulic system is powered by an engine, namely the engine is connected with a hydraulic pump to provide pressure oil, and the pressure oil is supplied to a working device and a hydraulic motor through a distributing valve so as to ensure that the working device performs excavation and the hydraulic motor performs walking; the steering hydraulic system and the brake hydraulic system are powered by an engine, namely the engine is connected with a gear pump to provide pressure oil, and the pressure oil is supplied to a steering gear and a brake valve so that the steering gear realizes steering and the brake valve realizes braking.

When the engine provides output power for the main hydraulic system, the steering hydraulic system and the brake hydraulic system, if a certain hydraulic system does not work, the engine still distributes the output power for the certain hydraulic system, which easily causes that other hydraulic systems cannot utilize the output power of the engine to the maximum extent, and energy loss is caused.

Disclosure of Invention

In view of this, an object of the present invention is to provide a method and a system for adjusting power of a main hydraulic system, and a full hydraulic wheel excavator, which improve the utilization rate of the output power of an engine in the main hydraulic system to a certain extent and reduce energy loss.

In a first aspect, an embodiment of the present application provides a method for adjusting main hydraulic system power, where the method includes:

acquiring preset power of a main hydraulic system of the full-hydraulic wheel type excavator and preset power of a secondary hydraulic system corresponding to at least one adjustable secondary hydraulic system;

when the full-hydraulic wheel type excavator works, detecting the working state of each adjustable secondary hydraulic system;

and if the fact that a certain adjustable secondary hydraulic system is in a non-working state is detected, determining the actual power of the primary hydraulic system based on the preset power of the primary hydraulic system and the preset power of the secondary hydraulic system corresponding to the adjustable secondary hydraulic system.

Preferably, when the full hydraulic wheeled excavator works, the detecting the working state of each adjustable secondary hydraulic system comprises:

acquiring a preset working pressure threshold value of each adjustable secondary hydraulic system, and detecting the pressure value of each adjustable secondary hydraulic system when the full-hydraulic wheel type excavator works;

if the pressure value of one adjustable secondary hydraulic system is not larger than the preset working pressure threshold value corresponding to the adjustable secondary hydraulic system, determining that the adjustable secondary hydraulic system is in a non-working state;

and if the pressure value of one adjustable secondary hydraulic system is detected to be larger than the preset working pressure threshold value corresponding to the adjustable secondary hydraulic system, determining that the adjustable secondary hydraulic system is in a working state.

Preferably, if it is detected that a certain adjustable secondary hydraulic system is in a non-operating state, determining the actual power of the primary hydraulic system based on the preset power of the primary hydraulic system and the preset power of the secondary hydraulic system corresponding to the adjustable secondary hydraulic system includes:

if the fact that a certain adjustable secondary hydraulic system is in a non-working state is detected, determining that the actual power threshold of a primary hydraulic system is the sum of the preset power of the primary hydraulic system and the preset power of a secondary hydraulic system corresponding to the adjustable secondary hydraulic system;

and determining the actual power of the main hydraulic system to be any value between the preset power of the main hydraulic system and the actual power threshold of the main hydraulic system based on the actual power threshold of the main hydraulic system and the preset power of the main hydraulic system.

Preferably, if it is detected that a certain adjustable secondary hydraulic system is in a non-operating state, determining that the actual power threshold of the primary hydraulic system is the sum of the preset power of the primary hydraulic system and the preset power of the secondary hydraulic system corresponding to the adjustable secondary hydraulic system includes:

acquiring a preset torque of a main hydraulic system of the full hydraulic wheel type excavator at the same engine speed and a preset torque of a secondary hydraulic system corresponding to at least one adjustable secondary hydraulic system;

if the fact that a certain adjustable secondary hydraulic system is in a non-working state is detected, determining that the actual torque threshold of a primary hydraulic system is the sum of the preset torque of the primary hydraulic system and the preset torque of a secondary hydraulic system corresponding to the adjustable secondary hydraulic system;

determining the main hydraulic system actual power threshold based on the engine speed and the main hydraulic system actual torque threshold.

Preferably, after the detecting the operating state of each of the adjustable secondary hydraulic systems while the full hydraulic wheeled excavator is operating, the adjusting method further includes:

and if the certain adjustable secondary hydraulic system is detected to be in a working state, controlling the adjustable secondary hydraulic system to keep the preset power of the secondary hydraulic system corresponding to the adjustable secondary hydraulic system unchanged.

Preferably, the adjustable secondary hydraulic system is a steering hydraulic system or a braking hydraulic system.

In a second aspect, the present disclosure further provides a regulation system for power of a main hydraulic system, where the regulation system includes a pressure sensor and a controller, and the pressure sensor is connected to the controller;

the pressure sensor is arranged on a hydraulic loop of the adjustable secondary hydraulic system and used for detecting the pressure value of the adjustable secondary hydraulic system in real time;

the controller is used for receiving the pressure value of the adjustable secondary hydraulic system, judging the working state of the adjustable secondary hydraulic system according to the pressure value of the adjustable secondary hydraulic system, and determining the actual power of the main hydraulic system based on the preset power of the main hydraulic system and the preset power of the secondary hydraulic system corresponding to the adjustable secondary hydraulic system if the adjustable secondary hydraulic system is detected to be in the non-working state.

In a third aspect, embodiments of the present application further provide a full hydraulic wheeled excavator, including a system for regulating power of a main hydraulic system as described in the second aspect.

Preferably, the full-hydraulic wheel type excavator further comprises a display screen, the display screen is connected with the controller, and the display screen is arranged in a cab of the full-hydraulic wheel type excavator and used for displaying the rotating speed of the engine, the torque and the power of the main hydraulic system and the adjustable secondary hydraulic system in real time.

Preferably, an electronic control main pump is arranged in a main hydraulic system of the full hydraulic wheel type excavator, and the electronic control main pump is connected with the controller, wherein the electronic control main pump is used for receiving a regulating signal of the actual power of the main hydraulic system sent by the controller.

The embodiment of the application provides a method and a system for adjusting power of a main hydraulic system and a full-hydraulic wheel type excavator, wherein the method for adjusting power of the main hydraulic system comprises the steps of firstly obtaining preset power of the main hydraulic system of the full-hydraulic wheel type excavator and preset power of a secondary hydraulic system corresponding to at least one adjustable secondary hydraulic system, then detecting working states of the adjustable secondary hydraulic systems when the full-hydraulic wheel type excavator works, determining distribution conditions of output power of an engine according to the working states of the adjustable secondary hydraulic systems, and if detecting that a certain adjustable secondary hydraulic system is in a non-working state, determining actual power of the main hydraulic system based on the preset power of the main hydraulic system and the preset power of the secondary hydraulic system corresponding to the adjustable secondary hydraulic system. Therefore, when a certain adjustable secondary hydraulic system does not work, the output power pre-distributed to the adjustable secondary hydraulic system by the engine can be redistributed to the main hydraulic system, so that the main hydraulic system can fully utilize the output power of the engine, the utilization rate of the output power of the engine in the main hydraulic system is improved to a certain extent, and the energy loss is reduced.

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a flowchart of a first method for regulating power of a main hydraulic system according to an embodiment of the present disclosure;

fig. 2 is a flowchart of a second method for regulating main hydraulic system power according to an embodiment of the present disclosure;

FIG. 3 is a flow chart of a third method of regulating power to a main hydraulic system according to an embodiment of the present disclosure;

fig. 4 is a schematic diagram of a system for regulating power of a main hydraulic system according to an embodiment of the present disclosure.

Detailed Description

In order to make the objects, 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 with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.

In the description of the embodiments of the present application, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are usually placed in when used, and are only used for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements indicated must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the embodiments of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In a first aspect, an embodiment of the present application provides a method for adjusting a main hydraulic system power, please refer to fig. 1, where fig. 1 is a flowchart of a first method for adjusting a main hydraulic system power according to an embodiment of the present application; as shown in fig. 1, an adjusting method provided in an embodiment of the present application includes:

s110, acquiring preset power of a main hydraulic system of the full-hydraulic wheel type excavator and preset power of a secondary hydraulic system corresponding to at least one adjustable secondary hydraulic system.

In the embodiment of the application, a main hydraulic system of the full hydraulic wheel type excavator is used for controlling a working device to excavate and controlling a hydraulic motor to walk; in addition, all-hydraulic wheeled excavators have many adjustable secondary hydraulic systems, such as a steering hydraulic system and a brake hydraulic system. In the working process of the full-hydraulic wheel type excavator, the output power of the engine simultaneously distributes the output power for the main hydraulic system and all the adjustable secondary hydraulic systems, so that the sum of the preset power of the main hydraulic system and the preset power of the secondary hydraulic systems corresponding to all the adjustable secondary hydraulic systems is the output power of the engine.

And S120, detecting the working state of each adjustable secondary hydraulic system when the full hydraulic wheel type excavator works.

In the step, a sensor is arranged at the position of each adjustable secondary hydraulic system, and the sensor is used for detecting the working state of each adjustable secondary hydraulic system and determining whether the engine provides output power for the adjustable secondary hydraulic system according to the working state of each adjustable secondary hydraulic system.

S130, if it is detected that a certain adjustable secondary hydraulic system is in a non-working state, determining the actual power of the primary hydraulic system based on the preset power of the primary hydraulic system and the preset power of the secondary hydraulic system corresponding to the adjustable secondary hydraulic system.

In the step, the working states of all the adjustable secondary hydraulic systems are detected, and the adjustable secondary hydraulic systems in the non-working states are determined, so that the output power of the engine is not needed by the adjustable secondary hydraulic systems in the non-working states, and if the engine still provides the preset power of the secondary hydraulic systems, the preset power of the secondary hydraulic systems is wasted, so that the output power of the engine cannot be fully utilized, and heat loss is caused. Therefore, the scheme can redistribute the preset power of the secondary hydraulic system, which is provided by the engine for the adjustable secondary hydraulic system in the non-working state, to the primary hydraulic system, so that the primary hydraulic system can utilize the output power of the engine to the maximum extent and provide enough power sources for the digging action of the working device and the walking action of the hydraulic motor.

The method for adjusting the power of the main hydraulic system includes the steps of obtaining preset power of the main hydraulic system of the full-hydraulic wheel type excavator and preset power of a secondary hydraulic system corresponding to at least one adjustable secondary hydraulic system in advance, detecting working states of the adjustable secondary hydraulic systems when the full-hydraulic wheel type excavator works, determining distribution conditions of output power of an engine according to the working states of the adjustable secondary hydraulic systems, and re-determining actual power of the main hydraulic system based on the preset power of the main hydraulic system and the preset power of the secondary hydraulic system corresponding to the adjustable secondary hydraulic system if it is detected that one adjustable secondary hydraulic system is in a non-working state. Therefore, when a certain adjustable secondary hydraulic system does not work, the output power pre-distributed to the adjustable secondary hydraulic system by the engine can be redistributed to the main hydraulic system, so that the main hydraulic system can utilize the output power of the engine to the maximum extent, the utilization rate of the output power of the engine in the main hydraulic system is improved to a certain extent, and the energy loss is reduced.

Referring to fig. 2, fig. 2 is a flowchart illustrating a second method for regulating main hydraulic system power according to an embodiment of the present disclosure; as shown in fig. 2, an adjusting method provided in an embodiment of the present application includes:

s210, acquiring preset power of a main hydraulic system of the full-hydraulic wheel type excavator and preset power of a secondary hydraulic system corresponding to at least one adjustable secondary hydraulic system.

And S220, detecting the working state of each adjustable secondary hydraulic system when the full-hydraulic wheel type excavator works.

And S230, if it is detected that a certain adjustable secondary hydraulic system is in a non-working state, determining the actual power of the primary hydraulic system based on the preset power of the primary hydraulic system and the preset power of the secondary hydraulic system corresponding to the adjustable secondary hydraulic system.

The descriptions of S210 to S230 may refer to the descriptions of S110 to S130, and the same technical effects can be achieved, which are not described again.

S240, if it is detected that one adjustable secondary hydraulic system is in a working state, controlling the adjustable secondary hydraulic system to keep the preset power of the secondary hydraulic system corresponding to the adjustable secondary hydraulic system unchanged.

Specifically, if a certain adjustable secondary hydraulic system is detected to be in a working state in the working process of the full-hydraulic wheel type excavator, the adjustable secondary hydraulic system in the working state still works by using the preset power of the secondary hydraulic system pre-distributed by the engine, if all the adjustable secondary hydraulic systems are detected to be in the working state, all the adjustable secondary hydraulic systems in the working state work by using the preset power of the secondary hydraulic system pre-distributed by the engine, and at the moment, the main hydraulic system and the adjustable secondary hydraulic system respectively keep the preset power of the main hydraulic system and the preset power of the secondary hydraulic system corresponding to the adjustable secondary hydraulic system unchanged.

The method for adjusting the power of the main hydraulic system provided by the embodiment of the application obtains the preset power of the main hydraulic system of the full hydraulic wheel type excavator and the preset power of the secondary hydraulic system corresponding to at least one adjustable secondary hydraulic system in advance, then when the full hydraulic wheel type excavator works, the working state of each adjustable secondary hydraulic system is detected, determining the distribution condition of the output power of the engine according to the working state of each adjustable secondary hydraulic system, if detecting that a certain adjustable secondary hydraulic system is in a non-working state, re-determining the actual power of the main hydraulic system based on the preset power of the main hydraulic system and the preset power of the secondary hydraulic system corresponding to the adjustable secondary hydraulic system, if detecting that a certain adjustable secondary hydraulic system is in a working state, and controlling the adjustable secondary hydraulic system to keep the preset power of the secondary hydraulic system corresponding to the adjustable secondary hydraulic system unchanged.

Therefore, when a certain adjustable secondary hydraulic system does not work, the output power pre-distributed to the adjustable secondary hydraulic system by the engine can be redistributed to the main hydraulic system, so that the main hydraulic system can utilize the output power of the engine to the maximum extent; when a certain adjustable secondary hydraulic system works, the adjustable secondary hydraulic system is kept to work according to the preset power. Furthermore, when one adjustable secondary hydraulic system does not work, the main hydraulic system can utilize the output power of the engine to the maximum, and when the adjustable secondary hydraulic system works, the main hydraulic system can work normally, so that the utilization rate of the output power of the engine can be improved to a certain extent, and the energy loss is reduced.

Referring to fig. 3, fig. 3 is a flowchart illustrating a third method for adjusting the power of the main hydraulic system according to the embodiment of the present disclosure; as shown in fig. 3, an adjusting method provided in an embodiment of the present application includes:

s310, acquiring preset power of a main hydraulic system of the full-hydraulic wheel type excavator and preset power of a secondary hydraulic system corresponding to at least one adjustable secondary hydraulic system.

And S320, acquiring a preset working pressure threshold value of each adjustable secondary hydraulic system, and detecting the pressure value of each adjustable secondary hydraulic system when the full-hydraulic wheel type excavator works.

In the step, whether the adjustable secondary hydraulic system is in a working state or not is judged by detecting the relation between the pressure value of each adjustable secondary hydraulic system and the corresponding preset working pressure threshold value. Wherein the pressure value of each adjustable secondary hydraulic system is detected by a pressure sensor provided on the hydraulic circuit of each adjustable secondary hydraulic system. In the embodiment of the application, the preset working pressure threshold is set according to the actual parameters of the full hydraulic wheel type excavator, and the specific numerical value is not limited.

S330, if the pressure value of one adjustable secondary hydraulic system is not larger than the preset working pressure threshold value corresponding to the adjustable secondary hydraulic system, determining that the adjustable secondary hydraulic system is in a non-working state.

In this step, when it is detected that the pressure value of a certain adjustable secondary hydraulic system is not greater than the preset working pressure threshold corresponding to the adjustable secondary hydraulic system, it is indicated that the adjustable secondary hydraulic system is not working at the present moment, and it is further determined that the adjustable secondary hydraulic system is in a non-working state.

And S340, if it is detected that a certain adjustable secondary hydraulic system is in a non-working state, determining that the actual power threshold of the primary hydraulic system is the sum of the preset power of the primary hydraulic system and the preset power of the secondary hydraulic system corresponding to the adjustable secondary hydraulic system.

In the embodiment of the application, if it is detected that a certain adjustable secondary hydraulic system is in a non-working state, the actual power threshold of the primary hydraulic system can be determined, and the actual power threshold of the primary hydraulic system is the maximum output power of the engine which can be distributed by the primary hydraulic system. The actual power threshold of the main hydraulic system is the sum of the preset power of the main hydraulic system and the preset power of the secondary hydraulic system corresponding to the adjustable secondary hydraulic system.

And S350, determining the actual power of the main hydraulic system to be any value between the preset power of the main hydraulic system and the actual power threshold of the main hydraulic system based on the actual power threshold of the main hydraulic system and the preset power of the main hydraulic system.

In the embodiment of the application, the preset power of the main hydraulic system is the minimum actual power which can be reached by the main hydraulic system and is determined by the fact that all the adjustable secondary hydraulic systems are in the working state after the working state of all the adjustable secondary hydraulic systems is detected by the full-hydraulic wheel type excavator; the actual power threshold of the main hydraulic system is the maximum actual power which can be reached by the main hydraulic system and is determined by the fact that all the adjustable secondary hydraulic systems are in the non-working state after the working state of all the adjustable secondary hydraulic systems is detected by the full hydraulic wheel type excavator.

It should be noted that the actual power of the main hydraulic system may be adjusted to the actual power threshold of the main hydraulic system, so as to utilize the output power of the engine to the maximum extent, or may continue to use the output power pre-allocated to the engine without adjustment, and further, the actual power of the main hydraulic system is determined to be any value between the preset power of the main hydraulic system and the actual power threshold of the main hydraulic system.

And S360, if the pressure value of one adjustable secondary hydraulic system is detected to be larger than the preset working pressure threshold value corresponding to the adjustable secondary hydraulic system, determining that the adjustable secondary hydraulic system is in a working state.

In this step, when it is detected that the pressure value of a certain adjustable secondary hydraulic system is greater than the preset working pressure threshold corresponding to the adjustable secondary hydraulic system, it is indicated that the adjustable secondary hydraulic system is working at the present moment, and the pressure value can be detected only when the adjustable secondary hydraulic system is in the working state, so that it is determined that the adjustable secondary hydraulic system is in the working state.

And S370, if it is detected that a certain adjustable secondary hydraulic system is in a working state, controlling the adjustable secondary hydraulic system to keep the preset power of the secondary hydraulic system corresponding to the adjustable secondary hydraulic system unchanged.

In the embodiment of the application, if it is detected that a certain adjustable secondary hydraulic system is in a working state, the adjustable secondary hydraulic system still keeps the preset power of the secondary hydraulic system unchanged. And if all the adjustable secondary hydraulic systems are detected to be in the working state, all the adjustable secondary hydraulic systems in the working state work by using the preset power of the secondary hydraulic system pre-distributed by the engine, and at the moment, the main hydraulic system and the adjustable secondary hydraulic systems respectively keep the preset power of the main hydraulic system and the preset power of the secondary hydraulic system corresponding to the adjustable secondary hydraulic system unchanged.

In the embodiment of the present application, step S340 includes:

and acquiring the preset torque of a main hydraulic system of the full hydraulic wheel type excavator at the same engine speed and the preset torque of a secondary hydraulic system corresponding to at least one adjustable secondary hydraulic system.

Specifically, the output torque of the engine is distributed to the main hydraulic system and the adjustable secondary hydraulic system, and the output power of the engine can be determined by knowing the output torque of the engine under the condition that the rotation speed of the engine is constant because the power is the product of the torque and the rotation speed.

And if the fact that a certain adjustable secondary hydraulic system is in a non-working state is detected, determining that the actual torque threshold of the primary hydraulic system is the sum of the preset torque of the primary hydraulic system and the preset torque of the secondary hydraulic system corresponding to the adjustable secondary hydraulic system.

Specifically, if it is detected that a certain adjustable secondary hydraulic system is in a non-working state, the actual power of the primary hydraulic system is determined again, the actual power of the primary hydraulic system is an arbitrary value between the preset power of the primary hydraulic system and the actual power threshold of the primary hydraulic system, and the actual power threshold of the primary hydraulic system is the sum of the preset power of the primary hydraulic system and the preset power of the secondary hydraulic system corresponding to the adjustable secondary hydraulic system. However, in the actual adjustment process, the output torque of the engine is adjusted, and further, under the same engine speed, the actual torque threshold of the primary hydraulic system is the sum of the preset torque of the primary hydraulic system and the preset torque of the secondary hydraulic system corresponding to the adjustable secondary hydraulic system.

Determining the main hydraulic system actual power threshold based on the engine speed and the main hydraulic system actual torque threshold.

In the step, by using a formula that the power is equal to the product of the rotating speed and the torque, the actual power threshold of the main hydraulic system can be determined through the rotating speed of the engine and the actual torque threshold of the main hydraulic system, so that the actual power of the main hydraulic system is determined.

In the embodiment of the application, the adjustable secondary hydraulic system is a steering hydraulic system or a braking hydraulic system. And then the steering hydraulic system and the brake hydraulic system are powered by the engine, so that the steering hydraulic system realizes steering, and the brake hydraulic system realizes braking. When the steering hydraulic system or the braking hydraulic system is not operated, the engine output power provided by the engine in advance is redistributed to the main hydraulic system.

In summary, according to the method for adjusting power of the primary hydraulic system provided by the embodiment of the present application, when a certain adjustable secondary hydraulic system does not operate, the output power pre-allocated to the adjustable secondary hydraulic system by the engine may be re-allocated to the primary hydraulic system, so that the primary hydraulic system can utilize the output power of the engine to the maximum extent, thereby improving the utilization rate of the output power of the engine in the primary hydraulic system to a certain extent and reducing energy loss.

In a second aspect, an embodiment of the present application provides a primary hydraulic system power regulation system, based on the primary hydraulic system power regulation method described in the first aspect, please refer to fig. 4, fig. 4 is a schematic diagram of a primary hydraulic system power regulation system provided in an embodiment of the present application, as shown in fig. 4, the primary hydraulic system power regulation system 40 includes a pressure sensor 410 and a controller 420, and the pressure sensor 410 is connected to the controller 420;

the pressure sensor 410 is arranged on a hydraulic loop of the adjustable secondary hydraulic system and used for detecting the pressure value of the adjustable secondary hydraulic system in real time;

the controller 420 is configured to receive a pressure value of the adjustable secondary hydraulic system, determine a working state of the adjustable secondary hydraulic system according to the pressure value of the adjustable secondary hydraulic system, and determine actual power of the primary hydraulic system based on preset power of the primary hydraulic system and preset power of a secondary hydraulic system corresponding to the adjustable secondary hydraulic system if it is detected that the adjustable secondary hydraulic system is in a non-working state.

In the embodiment of the present application, the adjustable secondary hydraulic systems are taken as a steering hydraulic system and a brake hydraulic system, respectively, for example, that is, the full hydraulic wheel type excavator includes a main hydraulic system, a steering hydraulic system and a brake hydraulic system. Respectively acquiring a pressure value of a steering hydraulic system and a pressure value of a brake hydraulic system through pressure sensors arranged on the steering hydraulic system and the brake hydraulic system, and judging the working states of the steering hydraulic system and the brake hydraulic system according to the magnitude relation between the pressure values and a preset working pressure threshold value, wherein if the pressure values are not more than the preset working pressure threshold value corresponding to the adjustable secondary hydraulic system, the hydraulic system is in a non-working state, and if the pressure values are more than the preset working pressure threshold value corresponding to the adjustable secondary hydraulic system, the hydraulic system is in a working state; furthermore, if the pressure value of the steering hydraulic system or the brake hydraulic system is not greater than the preset working pressure threshold corresponding to the adjustable secondary hydraulic system, the steering hydraulic system or the brake hydraulic system is in a non-working state, and the output power of the engine distributed to the steering hydraulic system or the brake hydraulic system can be redistributed to the main hydraulic system at the moment, so that the main hydraulic system can fully utilize the output power of the engine, the utilization rate of the output power of the engine is improved to a certain extent, and the energy loss is reduced.

Based on the same technical concept, the embodiment of the present application provides a full hydraulic wheel type excavator, which includes the regulation system of the main hydraulic system power as described in the second aspect.

The full hydraulic wheel type excavator provided by the embodiment of the application comprises all the technical characteristics of the main hydraulic system power regulating system, and has the technical effects corresponding to all the technical characteristics of the main hydraulic system power regulating system, which are not described in detail herein.

Preferably, the full-hydraulic wheel type excavator further comprises a display screen, the display screen is connected with the controller, and the display screen is arranged in a cab of the full-hydraulic wheel type excavator and used for displaying the rotating speed of the engine, the torque and the power of the main hydraulic system and the adjustable secondary hydraulic system in real time.

In the embodiment of the application, the display screen can display the rotating speed of the engine, the torque and the power of the main hydraulic system and the adjustable secondary hydraulic system more intuitively. Therefore, the operator can know various parameters of the full-hydraulic wheel type excavator in time conveniently.

Preferably, an electronic control main pump is arranged in a main hydraulic system of the full hydraulic wheel type excavator, and the electronic control main pump is connected with the controller, wherein the electronic control main pump is used for receiving a regulating signal of the actual power of the main hydraulic system sent by the controller.

In the embodiment of the application, an electric control main pump is arranged in a main hydraulic system of the full-hydraulic wheel type excavator, gear pumps are arranged in a steering hydraulic system and a brake hydraulic system, pressure signals of the gear pumps in the steering hydraulic system and the brake hydraulic system are respectively collected, whether the steering hydraulic system and the brake hydraulic system work is judged according to the obtained pressure values, and then the working power of the electric control main pump is adjusted, so that the output power of an engine is utilized to the maximum extent. Furthermore, when the steering hydraulic system and the brake hydraulic system do not work, the engine releases the output power of the engine to the main hydraulic system by adjusting the power of the main hydraulic system, the working efficiency of the main hydraulic system is improved, namely the excavating efficiency and the walking speed of the full-hydraulic wheel type excavator can be improved, so that the output power of the engine can be utilized to the maximum extent by the main hydraulic system, and the energy loss is reduced.

Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present application, and are used for illustrating the technical solutions of the present application, but not limiting the same, and the scope of the present application is not limited thereto, and although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope disclosed in the present application; such modifications, changes or substitutions do not depart from the spirit and scope of the exemplary embodiments of the present application, and are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.