CN212899185U

CN212899185U - Agricultural machine and electric control hydraulic system thereof

Info

Publication number: CN212899185U
Application number: CN202020619513.1U
Authority: CN
Inventors: 程昕; 吴迪; 姚远; 侯跃军
Original assignee: FJ Dynamics Technology Co Ltd
Current assignee: FJ Dynamics Technology Co Ltd
Priority date: 2020-04-23
Filing date: 2020-04-23
Publication date: 2021-04-06
Anticipated expiration: 2030-04-23

Abstract

The utility model provides an agricultural machinery and automatically controlled hydraulic system thereof, wherein automatically controlled hydraulic system includes a hydraulic assembly, a power take off and can hydraulic assembly with driven fluid, a hydraulic pressure sensor and a controller between the power take off. The power output device outputs hydraulic power in a transmission mode of the oil, wherein the hydraulic sensor is arranged on the hydraulic assembly to collect a hydraulic value A of the oil in the hydraulic assembly, the hydraulic assembly and the hydraulic sensor are electrically connected to the controller, the controller presets a standard hydraulic value A0, the controller sends a control signal to the hydraulic assembly based on the change of the hydraulic value A, and the hydraulic assembly controls the transmission direction of the oil based on the control signal so that the hydraulic value A is kept within a standard hydraulic value A0.

Description

Agricultural machine and electric control hydraulic system thereof

Technical Field

The utility model relates to a hydraulic means especially relates to an agricultural machinery and automatically controlled hydraulic system thereof.

Background

The hydraulic power device of agricultural machinery is mainly used for adjusting agricultural implements according to external conditions or specific requirements in the use process, and the mode of adjusting agricultural implements is more commonly used: position adjustment, resistance adjustment, force position comprehensive adjustment and the like, and also can realize the adjustment of rapid ascending and descending of the agricultural implement under the non-tillage condition. The position adjustment is realized by controlling the relative position between the farm tool and the tractor through a position adjusting handle of the lifter or a limiting clamp of the oil cylinder so as to ensure that the farm tool works at the selected tilling depth.

At present, a lifter and an external output of an existing agricultural machine mostly adopt a mechanical force-position feedback mode and a manual operation handle mode, and an operator controls the hydraulic oil in a distributor to change direction by operating the axial displacement of a valve rod of the distributor, so that an oil cylinder of the agricultural machine is controlled, and actions such as rising, falling, neutral and the like of an agricultural implement are realized. The mechanical force-position feedback mechanism used in the agricultural machine of the prior art has large response delay of soil resistance received by the working tool of the agricultural machine, such as a cultivator, and the position of a lifter, and has slow execution speed and poor cultivation quality. Therefore, the mechanical force-position feedback structure in the prior art is difficult to operate, and the position of the handle needs to be manually adjusted in real time by the experience of a manipulator according to the vibration of the vehicle and the rotating speed of the engine so as to control the ascending and descending of the working tool of the agricultural machine with equal amplitude. On the other hand, the valve is controlled to be opened in a manual adjusting mode so as to adjust the flow rate to control the lifting speed. The flow in the hydraulic cylinder is difficult to accurately control and is often preset to a specific speed, but the speed adjusting process is often difficult to adapt to the terrain and the lifting height, namely the driving speed provided by the agricultural machinery lifter in the prior art is difficult to coordinate.

Furthermore, the hydraulic lifters of the prior art do not automatically adjust the elevation or the lowering height according to the received resistance, i.e. when the working device of the agricultural machine, such as a plough, is subjected to resistance due to the height of the terrain during operation of the agricultural machine. The engine speed and the engine torque of the agricultural machine cannot be timely adjusted according to the resistance. Particularly, when the pressure value of hydraulic oil in the hydraulic lifter, the engine speed of the agricultural machine and the engine torque value exceed the preset value of the agricultural machine, the normal work of the engine of the agricultural machine is affected, and the agricultural machine is flamed out in the operation process. Usually, only a machinist with professional operation experience adjusts the lifting of the hydraulic lifter in real time according to the operating conditions of the agricultural machine, the terrain and other factors so as to avoid flameout of the agricultural machine during operation. Therefore, the operating requirement of a manipulator is high, and once the manipulator is operated improperly, the engine of the agricultural machine is easily damaged, so that the service life of the agricultural machine is influenced.

The feedback mechanism and the operation setting mechanism of the hydraulic lifter in the prior art are mechanical parts, so that the action connection and transmission links are more, the mechanical structure is unstable in transmission and is easy to adjust and tedious, and the accuracy is low. The closed loop calculation capability of mechanical parts is poor, the system cannot be optimally matched, the overall performance of the agricultural machine is severely restricted, and the development of automation and intellectualization of the agricultural machine is not facilitated.

SUMMERY OF THE UTILITY MODEL

The utility model has the advantages of an it provides an automatically controlled hydraulic system to mainly be advantageous for providing, wherein automatically controlled hydraulic system passes through automatically controlled mode control automatically controlled hydraulic system's action is favorable to reducing hydraulic system's the operation degree of difficulty.

Another advantage of the utility model is that an agricultural machinery and automatically controlled hydraulic system thereof is provided, wherein automatically controlled hydraulic system acquires operating personnel's operating information to control automatically according to operating information automatically controlled hydraulic system's the operation degree of difficulty of pressing other systems has been simplified.

Another advantage of the present invention is to provide an agricultural machine and the electric hydraulic system thereof, wherein the electric hydraulic control system is suitable for being installed in an agricultural machine, wherein the hydraulic control system can automatically adjust the lifting or the height that descends based on the resistance action that receives, in order to adjust the hydraulic control system with the resistance that the agricultural machine bore avoids the agricultural machine to stall at the operation in-process.

Another advantage of the present invention is to provide an agricultural machine and an electric hydraulic system thereof, wherein the electric hydraulic control system automatically adjusts the height of lifting or descending based on the engine speed and the engine torque of the agricultural machine to avoid the agricultural machine to stall in the action process.

Another advantage of the utility model is that an agricultural machinery and automatically controlled hydraulic system thereof is provided, wherein hydraulic control system detects the pressure of hydraulic oil automatically to adjust the lifting or the height that descends automatically according to the pressure of fluid, avoid automatically controlled hydraulic system is too big at the operation in-process pressure, is favorable to protecting hydraulic control system.

Another advantage of the present invention is to provide an agricultural machine and an electric hydraulic system thereof, wherein the electric hydraulic system includes a controller and at least one hydraulic component, wherein the controller is based on the operation control information control that acquires the hydraulic component is favorable to the automation of agricultural machine.

Another advantage of the present invention is to provide an agricultural machine and its electric hydraulic system, wherein the electric hydraulic system further includes an operating handle and set up in operating handle's angle sensor, wherein the angle sensor detects operating handle's angle information and the angle information transmission who will detect extremely the controller, so that the controller is based on the operating angle of handle is automatically controlled hydraulic assembly is favorable to the automation of agricultural machine.

Another advantage of the utility model is that an agricultural machinery and automatically controlled hydraulic system thereof is provided, wherein automatically controlled hydraulic system detects in driving process hydraulic assembly's drive angle to control automatically based on the drive angle data information that detects automatically controlled hydraulic system's drive speed is favorable to the intellectuality of agricultural machinery.

Another advantage of the utility model is that an agricultural machinery and automatically controlled hydraulic system thereof is provided, wherein automatically controlled hydraulic system detects in driving process hydraulic assembly's hydraulic pressure to control automatically based on the hydraulic pressure data information that detects automatically controlled hydraulic system's lifting or descending action is favorable to the intellectuality of agricultural machinery.

Another advantage of the present invention is to provide an agricultural machine and the electric hydraulic system thereof, wherein the electric hydraulic system the controller is controllable the opening and closing of the control valve of the different flow rates of the hydraulic assembly, so as to adjust the driving angle of the hydraulic assembly the lifting or the descending speed of the hydraulic assembly.

Another advantage of the utility model is that an agricultural machinery and automatically controlled hydraulic system thereof is provided, wherein automatically controlled hydraulic system is suitable for the agricultural machinery, wherein automatically controlled hydraulic system easy operation has reduced agricultural machinery driver's proficiency requirement.

Another advantage of the utility model is that an agricultural machinery and automatically controlled hydraulic system thereof is provided, wherein the agricultural machinery is at the in-process of traveling automatically controlled hydraulic system detects the lifting height and presses the size of night pressure value to according to the detection data that detect by controller control hydraulic assembly's action, so that the operation device work of agricultural machinery intelligence full-automatic control agricultural machinery.

Another advantage of the present invention is to provide an agricultural machine and an electric hydraulic system thereof, wherein the electric hydraulic system can provide hydraulic power for external devices. That is, the hydraulic drive of the external device may be connected to the electrically controlled hydraulic system, which provides the external device with hydraulic kinetic energy.

Another advantage of the utility model is that an agricultural machinery and automatically controlled hydraulic system thereof is provided, wherein automatically, the data information of automatically, the agricultural machinery work of automatically, automatically controlled hydraulic system in hydraulic pressure working process to adjust according to the data information who gathers automatically controlled hydraulic system's operating condition, so that automatically controlled hydraulic system adapts to the agricultural machinery operation of current agricultural machinery. The electric control hydraulic system is high in corresponding speed of executing actions according to the collected data information, and the operation quality of the agricultural machine when the electric control hydraulic system is used is improved.

The other advantages and features of the invention will be fully apparent from the following detailed description and realized by means of the instruments and combinations particularly pointed out in the appended claims.

According to the utility model discloses an aspect can realize aforementioned purpose and other purposes and advantage the utility model discloses an automatically controlled hydraulic system is suitable for an agricultural machinery host computer, include:

a hydraulic assembly;

a power take-off and an oil driveable between the hydraulic assembly and the power take-off, wherein the power take-off is communicably connected to the hydraulic assembly, wherein the power take-off outputs hydraulic power in the form of the transmission of the oil;

a hydraulic sensor, wherein the hydraulic sensor is arranged on the hydraulic assembly to collect a hydraulic value A of the oil in the hydraulic assembly; and

a controller, wherein the hydraulic assembly and the hydraulic sensor are electrically connected to the controller, wherein the controller presets a standard hydraulic value A0, the controller sends a control signal to the hydraulic assembly based on the change of the hydraulic value A, and the hydraulic assembly controls the transmission direction of the oil based on the control signal, so that the hydraulic value A is kept within the standard hydraulic value A0.

According to the utility model discloses an embodiment, automatically controlled hydraulic system further includes a speed sensor, speed sensor is used for detecting the rotational speed value B of agricultural machinery host computer, speed sensor by electrical connection in the controller, wherein a standard rotational speed value B0 is predetermine to the controller, the controller is based on rotational speed value B's change send control signal extremely hydraulic assembly, so that rotational speed value B keeps standard rotational speed value B0 within range.

According to an embodiment of the utility model, the controller is suitable for being communicably connect in an agricultural machinery controller of agricultural machinery host computer, the agricultural machinery controller transmission the engine torque value C of agricultural machinery host computer extremely the controller, wherein at least a standard engine torque value C0 is predetermine to the controller, the controller sends control signal extremely hydraulic assembly, so that engine torque value C is kept in standard engine torque value C0 within range.

According to the utility model discloses an embodiment, hydraulic assembly includes an oil tank, an at least oil pump and an at least valves, wherein the oil pump will be saved in the oil tank fluid is carried extremely the valves, wherein the valves by electrical connection in the controller, by the controller control in the valves the direction of transmission of fluid.

According to the utility model discloses an embodiment, the valves further include an integrated valve piece, set up in an integrated valve piece at least an electromagnetism overflow valve, an at least switching-over valve and an at least control valve, wherein the electromagnetism overflow valve the switching-over valve and the control valve by electric connection in the controller, by the controller control the electromagnetism overflow valve, the switching-over valve and the electric conduction state of control valve, wherein work as when the switching-over valve is circular telegram, by the switching-over valve control the flow direction of fluid, work as the controller control when the control valve circular telegram, in the valves the fluid transmission extremely power take off, by power take off exports hydraulic power.

According to the utility model discloses an embodiment, the switching-over valve includes a first switching-over valve unit and a second switching-over valve unit, wherein first switching-over valve unit with second switching-over valve unit by electrical connection in the controller, by first switching-over valve unit with second switching-over valve unit control in the valves the flow velocity of fluid.

According to the utility model discloses an embodiment, first switching-over valve unit control the flow velocity of fluid is less than the control of second switching-over valve unit the flow velocity of fluid, and the controller can control alone first switching-over valve unit with the electric conduction state of second switching-over valve unit.

According to the utility model discloses an embodiment, the valves further includes at least adapter, wherein the adapter can connect in with leading in the collection valve piece, by the control valve control opening and closure of adapter, work as the controller control when the control valve electricity is led to, the collection valve piece passes through the adapter will fluid transmission extremely power take off.

According to the utility model discloses an embodiment, the control valve further includes a first control valve and a second control valve, wherein first control valve with the second control valve set up in the integrated valve piece, wherein when first control valve electricity leads to, power take off device quilt fluid exports drive effort with the mode of lifting, wherein when second control valve electricity leads to, power take off device quilt fluid is with mode output drive effort that falls.

According to the utility model discloses an embodiment, power take-off includes an at least driving cylinder and an at least power output shaft, wherein power output shaft be drivably connect in driving cylinder, the valves passes through the adapter can lead to connect in driving cylinder works as when first control valve switches on, the fluid drive the power output shaft lifting works as when the second control valve switches on, the fluid drive power output shaft descends.

According to the utility model discloses an embodiment, the valves further includes an at least outside hydraulic control valve and an at least outside hydraulic adapter, wherein outside hydraulic control valve with outside hydraulic adapter set up in integrated valve piece, outside hydraulic control valve control opening and closure of outside hydraulic adapter, outside hydraulic control valve electrical connection in the controller, by the controller control the electric conduction of outside hydraulic control valve is led to the state, so that by outside hydraulic adapter provides hydraulic pressure kinetic energy for external instrument.

According to an embodiment of the present invention, the operating device further comprises an operating device, wherein the operating device is electrically connected to the controller, the operating device further comprises an operating element and at least one corner sensor, wherein the corner sensor is disposed on the operating element, and the corner sensor is electrically connected to the controller, and the corner sensor transmits the detected data information of the operating element to the controller in real time, so that the controller controls the valve group of the hydraulic component based on the operating data information.

According to an embodiment of the present invention, further comprising at least one angle sensor, wherein the angle sensor is disposed on the power output device, the angle sensor collects a rotation angle w of the power output device, the angle sensor is electrically connected to the controller, wherein the controller presets a maximum angular difference w1 that, when the operating element is in either position, the controller derives a rotation angle w0 at which the power take-off drives the suspension assembly based on the rotation angle of the operating element, if w-w0 ≧ w1, a control signal is generated, the selector valve and the control valve of the valve block are controlled by the control signal, and controlling the moving direction of the power output device in a mode of controlling the flow direction of the oil liquid so that the power output device reaches an angle range corresponding to the operating element.

According to the utility model discloses an on the other hand, the utility model discloses further provide an agricultural machinery, include:

an agricultural machinery host; and

an electro-hydraulic system, wherein the electro-hydraulic system is mounted to the agricultural machinery main frame, wherein the electro-hydraulic system further comprises:

a hydraulic assembly;

According to the utility model discloses an embodiment, agricultural machinery the automatically controlled hydraulic system further includes an at least linking bridge, wherein linking bridge is fixed power take-off in the agricultural machinery host computer.

According to the utility model discloses an embodiment, the agricultural machinery host computer further include at least an agricultural machinery main part set up in at least an engine and an agricultural machinery controller of agricultural machinery main part, wherein the agricultural machinery controller by communicably connect in the controller, by the agricultural machinery controller will the engine torque transmit in real time extremely the controller.

According to another aspect of the present invention, the present invention further provides an automatic adjustment method of an electric control hydraulic system, wherein the automatic adjustment method comprises the following steps:

(a) presetting a standard hydraulic pressure value A0;

(b) acquiring a hydraulic value A of a valve group, and generating a control signal if the hydraulic value A rises to be close to a preset standard hydraulic value A0, wherein the control signal controls the valve group to start; and

(c) at least one reversing valve of the valve group and the first control valve controlling the control valve are adjusted to be electrically communicated so that the power output device is lifted.

According to an embodiment of the present invention, before the step (c), the method further comprises the steps of:

presetting a standard rotating speed value B0; and

detecting a rotating speed value B of an agricultural machinery main machine, and generating a control signal if the rotating speed value B rises to be close to the preset standard rotating speed value B0, wherein the control signal controls the valve group to start.

presetting at least one engine torque value C0; and

and acquiring an engine speed value C of the agricultural machinery main machine, and generating a control signal if the engine speed value C rises to be close to a preset engine torque value C0, wherein the control signal controls the valve group to start.

According to an embodiment of the present invention, the step (c) further comprises the steps of:

detecting whether the hydraulic pressure value A, the rotating speed value B and the engine torque value C are reduced or not, and controlling the generation of a control signal if the hydraulic pressure value A, the rotating speed value B and the engine torque value C are kept in a preset range, wherein the control signal controls the valve group to start; and

adjusting at least one directional valve of the valve block and the second control valve controlling the control valve to be electrically conducted based on the control signal so that the power take-off is reset.

presetting a maximum angle difference value w 1;

detecting the rotation angle w of the power output device, and deriving a rotation angle w0 of the power output device driving the suspension assembly based on the rotation angle of an operating element; and

and if the absolute value of w-w0 is more than or equal to w1, generating a control signal, and controlling the reversing valve and the control valve of the valve group by the control signal so as to control the moving direction of the power output device by controlling the oil flow direction, so that the power output device reaches the angle range corresponding to the operating element.

Further objects and advantages of the invention will be fully apparent from the ensuing description and drawings.

These and other objects, features and advantages of the present invention will become more fully apparent from the following detailed description, the accompanying drawings and the appended claims.

Drawings

Fig. 1 is an overall schematic view of an agricultural machine according to a first preferred embodiment of the present invention.

Fig. 2A is a schematic view of an electrically controlled hydraulic system of the agricultural machine according to the above preferred embodiment of the present invention.

Fig. 2B is a schematic view of another view angle of the electric control hydraulic system of the agricultural machine according to the above preferred embodiment of the present invention.

Fig. 2C is a schematic view of another view angle of the electric control hydraulic system of the agricultural machine according to the above preferred embodiment of the present invention.

Fig. 3A is a schematic view of a hydraulic assembly of the electrically controlled hydraulic system of the agricultural machine according to the above preferred embodiment of the present invention.

Fig. 3B is another schematic view of the hydraulic assembly of the electrically controlled hydraulic system of the agricultural machine according to the above preferred embodiment of the present invention.

Fig. 4 is a schematic operation diagram of an operating device of the electrically controlled hydraulic system of the agricultural machine according to the above preferred embodiment of the present invention.

Fig. 5 is a schematic view of a transmission of the electrically controlled hydraulic system of the agricultural machine according to the above preferred embodiment of the present invention.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents and other technical solutions without departing from the spirit and scope of the invention.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in a generic and descriptive sense only and not for purposes of limitation, as the terms are used in the description to indicate that the referenced device or element must have the specified orientation, be constructed and operated in the specified orientation, and not for the purpose of limitation.

It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.

Referring to fig. 1 of the drawings accompanying the present specification, an agricultural machine according to a first preferred embodiment of the present invention will be explained in the following description. The agricultural machine comprises an agricultural machine main body 100 and an electric control hydraulic system 200 carried on the agricultural machine main body 100, wherein the electric control hydraulic system 200 outputs hydraulic power, and the electric control hydraulic system 200 supports the operation of agricultural machine operation equipment, such as a cultivator, a plough, sowing equipment and the like; or the electric control hydraulic system 200 drives the agricultural machinery operation equipment to move. The electric control hydraulic system 200 is carried to the agricultural machinery main machine 100, wherein the agricultural machinery main machine 100 provides working electric energy required by the electric control hydraulic system 200 to drive the electric control hydraulic system 200 to output hydraulic kinetic energy. In the preferred embodiment of the present invention, the electric control hydraulic system 200 is disposed at the rear end of the main frame 100, and the main frame 100 drags and supports the electric control hydraulic system 200.

The agricultural machinery main body 100 further comprises an agricultural machinery main body 110, at least one engine 120 disposed on the agricultural machinery main body 110, and at least one agricultural machinery controller 130, wherein the engine 120 drives the agricultural machinery main body 110 to move, wherein the agricultural machinery controller 130 is disposed on the agricultural machinery main body 110, and the agricultural machinery main body 110 is controlled by the agricultural machinery controller 130. During the operation of the agricultural machine, the agricultural machine controller 130 feeds back the torque value information of the engine 120 of the agricultural machine in an implementation manner, so that the electric control hydraulic system 200 can automatically adjust the lifting or lowering height according to the torque value information of the agricultural machine.

Referring to fig. 2A to 5 of the drawings of the present application, the electric control hydraulic system 200 of the agricultural machine according to the first preferred embodiment of the present invention is specifically explained. The electro-hydraulic control system 200 includes a hydraulic assembly 10, a controller 20, at least one connecting bracket 30, at least one power output device 40, and at least one oil 50 driven between the hydraulic assembly 10 and the power output device 40, wherein the hydraulic assembly 10 is electrically connected to the controller 20, and the controller 20 sends a control signal to the hydraulic assembly 10. The hydraulic assembly 10 receives control signals from the controller 20 and controls the transmission of oil 50 within the hydraulic assembly 10 based on the control signals. The power output device 40 is connected to the hydraulic assembly 10 in a conductive manner, and the hydraulic assembly 10 guides oil 50 to the power output device 40 based on the control signal, so that hydraulic power is output through the power output device 40; or the power output device 40 returns the oil 50 to the hydraulic assembly 10, and the power output device 40 is in a pressure relief state.

In the preferred embodiment of the present invention, the power output device 40 is disposed on the connecting bracket 30, wherein the connecting bracket 30 is fixedly disposed on the main frame 100. In other words, the main agricultural machine 100 tows and supports the electric control hydraulic system 200 through the connecting bracket 30. Preferably, in the preferred embodiment of the present invention, the hydraulic assembly 10 is disposed on the connecting bracket 30, and the connecting bracket 30 fixes the hydraulic assembly 10 to the main agricultural machinery 100.

It should be noted that, in the preferred embodiment of the present invention, the controller 20 controls the transmission of the oil 50 in the hydraulic assembly 10 in an electric control manner, so as to control the hydraulic power output by the power output device 40, which is beneficial to accurately control the hydraulic power output by the electric control hydraulic system 200.

As shown in fig. 3A and 3B, the hydraulic assembly 10 includes an oil tank 11, at least one oil pump 12, and at least one valve set 13, wherein the oil pump 12 is communicably connected to the oil tank 11, the oil 50 stored in the oil tank 11 is pumped to the valve set 13 by the oil pump 12, the oil 50 that does not participate in hydraulic power in the valve set 13 can flow back to the oil tank 11, and the oil is stored in the oil tank 11. The hydraulic assembly 10 further includes at least one oil inlet pipe 101 and at least one oil outlet pipe 102, wherein the oil inlet pipe 101 communicates the oil pump 12 with the valve block 13, that is, the oil pump 12 pumps oil into the valve block 13 through the oil inlet pipe 101. The outlet line 102 communicates the valve block 13 with the oil tank 11, wherein the valve block 13 returns the oil 50 not participating in hydraulic pressure to the oil tank 11 through the outlet line 102.

It is worth mentioning that the oil inlet pipe 101 and the oil outlet pipe 102 of the hydraulic assembly 10 are hydraulic hoses or hard pipes. It is to be understood that the pipe types of the inlet pipe 101 and the outlet pipe 102 are merely exemplary and not limiting.

It should be noted that the oil pump 12 of the hydraulic assembly 10 is drivingly disposed on the main agricultural machinery 100, and the main agricultural machinery 100 drives the oil pump 12 to pump the oil 50 into the valve block 13. Preferably, in the preferred embodiment of the present invention, the oil pump 12 is a gear pump. It is to be understood that the manner in which the oil pump 12 is driven is by way of example only and not by way of limitation. Therefore, the oil pump 12 may also be implemented as other types of pump devices.

The valve block 13 is electrically connected to the controller 20 of the electro-hydraulic control system 200, wherein the controller 20 controls the opening and closing of the valve block 13, and the valve block 13 guides the transmission of the oil 50 between the valve block 13 and the power take-off 40. In detail, when the electro-hydraulic system 200 drives the ascending or descending motion, the controller 20 controls the valve set 13 of the hydraulic assembly 10 to introduce the oil 50 to the power take-off 40, so that the power take-off 40 provides hydraulic power upwards or downwards. When the electro-hydraulic system 200 is in a pressure relief state, the controller 20 controls the valve set 13 to lead out the oil 50 of the power output device 40.

The valve set 13 further includes an integrated valve block 131, at least one electromagnetic overflow valve 132 disposed on the integrated valve block 131, at least one direction switching valve 133, and at least one control valve 134, wherein the electromagnetic overflow valve 132, the direction switching valve 133, and the control valve 134 are electrically connected to the controller 20, and the controller 20 controls the opening and closing of the valve elements to control the transmission direction or the transmission speed of the oil 50. The integration valve block 131 is communicably connected to the oil pump 12 through the oil inlet pipe 101, wherein the oil pump 12 pumps the oil 50 in the oil tank 11 into the integration valve block 131. The integration valve block 131 is communicably connected to the oil tank 11 through the oil outlet pipe 102, and the oil 50 of the integration valve block 131 is returned to the oil tank 11 through the oil outlet pipe 102.

The electromagnetic overflow valve 132 is electrically connected to the controller 20, the controller 20 controls the electromagnetic overflow valve 132 to be turned on and off, and when the electrically controlled hydraulic system 200 needs to act, the controller 20 controls the electromagnetic overflow valve 132 to be turned on so as to enable the valve block 13 to establish a working pressure, wherein the oil pump 12 pumps the oil into the valve block 13; when the electronic control hydraulic system 200 is depressurized, the controller 20 controls the electromagnetic spill valve 132 to be powered off, and the oil 50 in the valve group 13 flows back to the oil tank 11.

The direction change valve 133 is provided to the integration valve block 131, and the direction change valve 133 is communicably connected to the controller 20, wherein the direction change valve 133 switches the transmission direction of the oil in the valve block 13 based on a control signal of the controller 20, thereby controlling the movement direction of the power output apparatus 40, such as the ascending movement, the descending movement, and the like of the power output apparatus. The direction valve 133 is also used to control the flow rate of the oil 50 in the valve set 13, and thus the driving speed of the power output device 40, i.e. the speed of the power output device 40.

Accordingly, the direction valve 133 further includes at least a first direction valve unit 1331 and a second direction valve unit 1332, wherein the first direction valve unit 1331 and the second direction valve unit 1332 are connected in parallel with each other and are independently disposed on the integrated valve block 131, and the driving direction and the driving speed of the oil 50 in the integrated valve block 131 are controlled by the first direction valve unit 1331 and the second direction valve unit 1332. Wherein the first direction valve unit 1331 and the second direction valve unit 1332 are electrically connected to the controller 20, and the operation states of the first direction valve unit 1331 and the second direction valve unit 1332 are controlled by the controller 20.

Preferably, in this preferred embodiment of the present invention, the first direction valve unit 1331 is a micro-adjustment flow valve, and the second direction valve unit 1332 is a smooth flow valve. When the controller 20 controls the first directional valve unit 1331 to be independently turned on, the flow rate of the oil in the integrated valve block 131 of the valve group 13 is X; when the controller 20 controls the second directional valve unit 1332 to be independently switched on, the flow rate of the oil in the integrated valve block 131 of the valve group 13 is Y, wherein X is less than or equal to Y; when the controller 20 controls the first and second

direction valve units

1331 and 1332 to be in an electrically conductive state in common, the flow rate of the oil in the integration valve block 131 of the valve block 13 is X + Y. It will be appreciated that the speed of the drive or movement of the power take off 40 is dependent upon the transmission speed of the oil 50 between the valve block 13 and the power take off 40.

It is worth mentioning that when the controller 20 controls the first direction valve unit 1331 to be electrically conducted alone, the oil exchange speed between the valve block 13 and the power output device 40 is slow, and the power output device 40 moves at a small driving speed. When the controller 20 controls the second direction valve unit 1332 to be electrically conducted alone, the oil exchange speed between the valve block 13 and the power output apparatus 40 is fast, and the power output apparatus 40 is driven at a flat speed. When the controller 20 controls the first direction valve unit 1331 and the second direction valve unit 1332 to be in an electrically conductive state in common, the oil 50 between the valve block 13 and the power output apparatus 40, and the power output apparatus 40 is driven at a fast speed.

In short, in the preferred embodiment of the present invention, the controller 20 controls the opening and closing of the first direction valve unit 1331 and the second direction valve unit 1332 of the direction valve 133, so that the power output device 40 has three different driving speeds.

In other words, when the electro-hydraulic control system 200 needs to be driven quickly, the controller 20 controls the first direction valve unit 1331 and the second direction valve unit 1332 of the direction valve 133 to be in a conducting state together, so as to increase the flow rate of the valve set 13, and thus the power output device 40 drives the working device of the agricultural machine at a quick driving speed. When the electro-hydraulic system 200 needs to be driven quickly, such as up to high or down to low, the power take-off 40 needs to be driven at a slower speed. Accordingly, the controller 20 individually turns on the first direction valve unit 1331 and turns off the second direction valve unit 1332 of the direction valve 133; or the second direction valve unit 1332 is separately opened and the first direction valve unit 1331 is closed, so that the valve group 13 is driven at a small oil flow rate, so that the power output device 40 is driven at a small speed.

Preferably, in this preferred embodiment of the present invention, the first direction valve unit 1331 and the second direction valve unit 1332 of the valve block 13 may be, but not limited to, an electromagnetic direction valve or a proportional direction valve.

The valve manifold 13 further includes at least one adapter 135, wherein the adapter 135 is connected to the manifold block 131, wherein the oil in the manifold block 131 flows to the power take-off 40 via the adapter 135. The control valve 134 controls the opening and closing of the adapter 135, wherein when the electro-hydraulic system 200 is actuated, the controller 20 electrically conducts the control valve 134, and the control valve 134 controls the opening of the adapter 135 to allow the oil 50 to flow from the integration valve block 131 to the power take-off 40. When the electro-hydraulic control system 200 is in a pressure relief state, the controller 20 de-energizes the control valve 134, wherein the control valve 134 controls the adapter 135 to close, thereby preventing the oil 50 from passing through.

The control valve 134 of the valve set 13 further includes a first control valve 1341 and a second control valve 1342, wherein the first control valve 1341 and the second control valve 1342 are respectively disposed in the integrated valve block 131 in a communication manner. The first control valve 1341 and the second control valve 1342 are electrically connected to the controller 20, respectively, and the controller 20 controls the operation states of the first control valve 1341 and the second control valve 1342. When the first control valve 1341 and the second control valve 1342 are in an electrically conductive state, the first control valve 1341 and the second control valve 1342 control at least one of the joints 135 to be conductive to allow the oil 50 in the integrated valve block 131 to flow to the power take-off 40 through the joint 135. Preferably, the first control valve 1341 and the second control valve 1342 may be, but are not limited to, an electromagnetic ball valve.

Preferably, in the preferred embodiment of the present invention, the power take-off 40 is raised, lowered, neutral or floated by the hydraulic assembly 10. In other words, the hydraulic assembly 10 outputs the oil 50 to the power take-off 40, so that the power take-off 40 lifts the working device under the action of the oil 50; or the power output device 40 can lift the working device under the action of the oil liquid 50; or the power output device 40 is kept in a neutral state by the oil 50; or the power output device 40 may move up and down by the driving of the working device.

The hydraulic assembly 10 further includes a lift oil pipe 103 and a lower oil pipe 104, wherein the lift oil pipe 103 communicates with an adapter 135 of the valve block 13 to the power take-off 40, and wherein the first control valve 1341 controls the opening and closing of the adapter 135. When the controller 20 opens the first control valve 1341, the oil 50 in the integrated valve block 131 of the valve block 13 flows to the power take-off 40 via the adapter 135 and the riser pipe 103, wherein the power take-off 40 lifts the work device under the hydraulic action of the oil 50. The lowering service line 104 communicates with an adapter 135 of the valve block 13 to the power plant 40, wherein the second control valve 1342 controls the opening and closing of the adapter 135. When the controller 20 opens the second control valve 1342, the oil 50 in the integrated valve block 131 of the valve block 13 flows to the power take-off 40 via the adapter 135 and the lowering oil pipe 104, wherein the power take-off 40 lowers the work device under the hydraulic pressure of the oil 50.

The hydraulic assembly 10 further includes at least one automatic adjustment device 15, wherein the automatic adjustment device 15 is communicably disposed between the adapter 135 and the power take-off 40, and the automatic adjustment device 15 adjusts the pressure of the oil within the power take-off 40. Preferably, in the preferred embodiment of the present invention, the automatic adjusting device 15 is communicated with the adapter 135 of the valve block 13, wherein the automatic adjusting device 15 is connected to the power output device 40 through the lifting action oil pipe 103 and the lowering action oil pipe 104. The valve block 13 guides the oil 50 to the power take-off 40 through the adapter 135, the automatic adjustment device 16, and the lifting oil pipe 103 or the lowering oil pipe 104.

When the electrically controlled hydraulic device 200 is lifted by external force, such as the force of lifting the ground upwards during the tillage of the agricultural machinery, the oil in the power output device 40 is squeezed and flows back to the automatic adjusting device 15. The automatic adjusting device 15 stores the oil and accumulates the pressure, and when the external force applied to the electric control hydraulic device 200 is reduced, the automatic adjusting device 15 guides the stored oil 50 into the power output device 40, so that the power output device 40 drives the operating device of the agricultural machine to return to the initial position.

As shown in fig. 4 and 5, the power output device 40 includes at least one driving cylinder 41 and at least one power output shaft 42, wherein the power output shaft 42 is connected to the driving cylinder 41 in a driving manner. The valve group 13 of the hydraulic assembly 10 transmits the oil 50 to the driving cylinder 41 of the power output device 40, wherein the driving cylinder 41 drives the power output shaft 42 to move up and down under the action of the oil 50. It can be understood that the driving cylinder 41 of the power output device 40 converts the hydraulic acting force into a driving acting force for driving the power output shaft 42 to move in the vertical direction, and the power output shaft 42 drives the working device to ascend, descend or keep in a stationary state.

Preferably, in the preferred embodiment of the present invention, the number of the driving cylinders 41 of the power output device 40 is two, wherein the driving cylinders 41 are symmetrically and fixedly disposed at two sides of the connecting bracket 30, and each of the driving cylinders 41 drives the power output shaft 42 to move under the supporting action of the connecting bracket 30. It is understood that the number of the driving cylinders 41 of the power output apparatus 40 in the preferred embodiment of the present invention is merely exemplary and not limited.

More preferably, the driving cylinder 41 is a double-acting driving cylinder, that is, when the oil 50 is transferred to the driving cylinder 41, the driving cylinder 41 drives the power output shaft 42 to move upwards in a lifting manner; or the driving cylinder 41 drives the power take-off shaft 42 to move downward in a descending manner.

Each driving oil cylinder 41 is communicated with the adapter 135 of the valve group 13 through the lifting action pipeline 103 or the descending action pipeline 104, that is, the valve group 13 outputs the oil liquid 50 to the driving oil cylinder 41 through the lifting action pipeline 103 or the descending action pipeline 104, and the driving oil cylinder 41 converts the hydraulic acting force into a driving acting force for driving the power output shaft 42 to move.

The driving cylinder 41 further includes a cylinder 411 and a driving rod 412 telescopically disposed on the cylinder 411, wherein the valve set 13 guides oil into the cylinder 411, and the driving rod 412 is driven by the pressure of the oil to telescopically move. The power take-off shaft 42 is drivingly connected to the driving rod 412 of the driving cylinder 41, and the power take-off shaft 42 is driven to move up and down by the driving rod 412 under the hydraulic pressure of the oil 50.

The lifting pipe 103 is conductively connected to the lower end of the cylinder 411, and when the oil 50 is output to the lower end of the cylinder 411 through the lifting pipe 103, the oil 50 in the cylinder 411 drives the driving rod 412 to move upwards under the hydraulic action, that is, the driving rod 412 extends outwards under the pressure of the oil. The descending pipe 104 is connected to the upper end of the cylinder 411 in a conductive manner, and when the oil 50 is output to the lower end of the cylinder 411 through the descending pipe 104, the oil in the cylinder 411 drives the driving rod 412 to move downward under the hydraulic action, that is, the driving rod 412 retracts to the cylinder 411 under the pressure of the oil 50.

It should be noted that the driving cylinder 41 of the power output device 40 is further conductively connected to the oil tank 11, and when the electric hydraulic system 200 is in a pressure relief state, the oil 50 in the driving cylinder 41 is introduced into the oil tank 11, so as to implement pressure relief of the driving cylinder 41.

The power take-off shaft 42 of the power take-off device 40 is drivingly provided to the connecting bracket 30, and the power take-off shaft 42 is driven to swing up and down by the drive rod 412 of the drive cylinder 41. Preferably, the power take-off shaft 42 is pivotably provided to the upper end of the connecting bracket 30 based on a rotating shaft, and the power take-off shaft 42 rotates up and down based on the rotating shaft when the driving cylinder 41 drives the power take-off shaft 42.

The power take-off shaft 42 further comprises a pivot shaft 421 and at least one swing link 422 extending outwardly from the pivot shaft 421, wherein the driving rod 412 of the driving cylinder 41 is drivingly connected to the swing link 422, and the swing link 422 is driven by the driving rod 412 to rotate based on the pivot shaft 421.

As shown in fig. 2A to 2C, the electro-hydraulic system 200 further includes at least one suspension assembly 60, wherein the suspension assembly is drivingly disposed on the power output device 40, and the suspension assembly 60 is driven by the power output device 40 to move up and down. An agricultural working device is drivingly provided to the suspension assembly 60, and the power of the power take-off 40 is transmitted by the suspension assembly 60 to the agricultural working device, such as a plow, a tilling implement, or the like. The suspension unit 60 is provided to the connecting bracket 30, the suspension unit 60 is supported by the connecting bracket 30, and the agricultural implement is supported and suspended by the suspension unit 60. Preferably, in the preferred embodiment of the present invention, the suspension assembly 60 is implemented as a three-point suspension assembly, it being understood that the specific embodiment of the suspension assembly 60 is provided herein by way of example only, and not limitation.

The suspension assembly 60 includes at least one transmission link 61, a transmission bracket 62 and at least one connecting member 63, wherein the transmission link 61 is capable of being connected to the power output shaft 42 in a transmission manner to the transmission bracket 62, and when the electrically controlled hydraulic system 200 ascends or descends, the power output shaft 42 drives the transmission link 61 and the transmission bracket 62 is driven by the transmission link 61 to move up and down. The transmission bracket 62 is pivotally disposed at the connection bracket 30, and the transmission link 61 drives the transmission bracket 62 to rotate based on the connection bracket 30. The connecting member 63 is pivotally connected to the transmission bracket 62 and the main agricultural machinery 100.

As shown in fig. 3A to 3B, the valve block 13 of the hydraulic assembly 10 further includes at least one external hydraulic control valve 136 and at least one external hydraulic adapter 137, wherein the external hydraulic control valve 136 is disposed on the integrated valve block 131, and the external hydraulic adapter 137 is communicably connected to the integrated valve block 131. The external hydraulic control valve 136 controls the opening and closing of the external hydraulic adapter 137. The hydraulic transmission of an external hydraulic tool pitch plow, tilling implement, etc. may be connected to the hydraulic assembly 10 by the external hydraulic adapter 137, i.e., the hydraulic assembly 10 may provide the oil 50 required for hydraulic power to the external hydraulic tool.

The external hydraulic control valve 136 is electrically connected to the controller 20, and the controller 20 controls the conduction state of the external hydraulic control valve 136. When the controller 20 switches on the external hydraulic control valve 136, the external hydraulic control valve 136 controls the external hydraulic adapter 137 to open, wherein the oil 50 in the integrated valve block 131 can be output to an external hydraulic tool through the external hydraulic adapter 137, and the external hydraulic tool is driven to work by the hydraulic assembly 10. Preferably, the external hydraulic control valve 136 may be, but is not limited to, a solenoid directional valve.

Preferably, in the preferred embodiment of the present invention, the valve group 13 of the hydraulic assembly 10 is fixedly disposed on the connecting bracket 30, wherein the valve group 13 is located above the oil tank 11, so that the oil of the valve group 13 can flow back to the oil tank 11. The hydraulic assembly 10 further includes at least one fixing frame 14, and the valve set 13 is fixed to the connecting bracket 30 by the fixing frame 14.

As shown in fig. 2A to 2C, the controller 20 includes a control unit 21 and a plurality of communication cables 22, wherein the communication cables 22 electrically connect the control unit 21 to the hydraulic assembly 10, and the communication cables 22 transmit control signals of the control unit 21. The control unit 21 generates and transmits the control signal to the valve block 13 of the hydraulic assembly 10 based on the detected data information and the operator's operation information to control the hydraulic assembly 10 to output hydraulic power through the power output apparatus 40.

Preferably, in the preferred embodiment of the present invention, the Control Unit 21 of the controller 20 is implemented as an ECU (Electronic Control Unit), wherein the Control Unit 21 is provided to the main agricultural machinery 100 of the agricultural machinery, and the operation of the Control Unit 21 of the controller 20 is supported by the main agricultural machinery 100.

The electro-hydraulic system 200 further includes an operating device 70, wherein the operating device 70 is communicatively connected to the controller 20, and the operating device 70 transmits the operating information of the user to the controller 20. The controller 20 controls the hydraulic assembly 10 based on the operation information of the operation device 70, and hydraulic working power is transmitted from the power output device 40. The operating device 70 further comprises an operating element 71 and at least one rotation angle sensor 72, wherein the rotation angle sensor 72 is arranged on the operating element 71, and the rotation angle sensor 72 detects the rotation angle of the operating element 71. The rotation angle sensor 72 is electrically connected to the controller 20, and the rotation angle of the operation member 71 is transmitted to the controller 20 by the rotation angle sensor 72. The controller 20 controls the valve block 13 of the hydraulic unit 10 based on the rotational angle information collected by the rotational angle sensor 72.

Preferably, in the preferred embodiment of the present invention, the operation element 71 is implemented as an operation handle or a knob device, and the rotation angle sensor 72 collects the rotation angle of the operation element 71 in real time when the user operates the operation element 71. As will be understood by those skilled in the art, the controller 20 automatically controls the opening of the valve block 13 of the hydraulic assembly 10 based on operator operation information, and thus controls the operation of the power take-off 40.

The electro-hydraulic control system 200 further includes at least one angle sensor 80, wherein the angle sensor 80 is disposed on the power output shaft 42 of the power output device 40, and the angle sensor 80 collects the rotation angle of the power output shaft 42 in real time. The angle sensor 80 is electrically connected to the control unit 21 of the controller 20, and the rotation angle of the power take-off shaft 42 is fed back by the angle sensor 80 in real time. The controller unit 21 of the controller 20 controls the point-on state of the valve group 13 of the hydraulic assembly 10 based on the angle information collected by the angle sensor 80, so as to adjust the transmission speed of the power output device 40.

For example, when the controller 20 obtains a large acceleration value of the power output device 40 based on the angle information of the power output shaft 42 acquired by the angle sensor 80, the controller 20 controls the conduction state of the reversing valve 133 of the valve group 13 so as to control the oil transmission speed between the valve group 13 and the power output device 40.

The electro-hydraulic control system 200 further includes at least one hydraulic sensor 90, wherein the hydraulic sensor 90 is disposed on the valve set 13 of the hydraulic assembly 10, and the hydraulic sensor 90 collects a hydraulic value of the oil 50 in the valve set 13 as a. The hydraulic sensor 90 is electrically connected to the control unit 21 of the controller 20, the hydraulic sensor 90 transmits the hydraulic data information of the valve group 13 to the control unit 21, the control unit 21 controls the on state of the valve group 13 based on the collected hydraulic data information, and the hydraulic pressure of the oil 50 in the valve group 13 is adjusted by adjusting the movement of the power output device 40.

Preferably, the hydraulic sensor 90 is disposed on the integrated valve block 131 of the valve block 13, and the pressure of the oil 50 in the integrated valve block 131 and the oil pipe is collected by the hydraulic sensor 90.

The control unit 21 of the controller 20 presets a standard hydraulic value a0, wherein when the hydraulic value a of the oil 50 in the valve group 13 is less than a0, the main engine 100 and the electrically controlled hydraulic device 200 of the agricultural machine can work normally. If the hydraulic pressure value a detected by the hydraulic pressure sensor 90 approaches or is about to exceed the standard hydraulic pressure value a0, the controller 20 controls the switching valve 133 of the valve block 13 and the first control valve 1341 of the control valve 134 to be opened. The oil in the valve block 13 is introduced into the power take-off 40, and the power take-off 40 lifts the suspension assembly 60 to reduce the hydraulic value a of the oil 50 in the valve block 13.

The electro-hydraulic control system 200 further comprises at least one rotation speed sensor 1100, wherein the rotation speed sensor 1100 is disposed on the farm machinery main machine 100, and the rotation speed sensor 1100 collects a rotation speed value B of the farm machinery main machine 100 in real time. The rotation speed sensor 1100 is electrically connected to the controller unit 21 of the controller 20, wherein the rotation speed data information collected by the rotation speed sensor 1100 is transmitted to the controller unit 21, and the controller unit 21 adjusts the lifting or lowering height of the power output device 40 based on the rotation speed of the agricultural machine 100.

In detail, the controller 20 presets a standard rotation speed value B0 based on the type of the main agricultural machinery 100 of the agricultural machinery, wherein when the rotation speed value B of the main agricultural machinery 100 is less than B0, the main agricultural machinery 100 of the agricultural machinery can work normally. If the rotating speed value B collected by the rotating speed sensor 1100 is close to or is about to exceed the standard rotating speed value B0, the main agricultural machinery 100 may be turned off when the electrically controlled hydraulic device 200 is driven to operate by the main agricultural machinery 100. Therefore, when the rotation speed value B collected by the rotation speed sensor 1100 approaches or is about to exceed the standard rotation speed value B0, the controller unit 21 of the controller 20 controls the switching valve 133 of the valve group 13 and the first control valve 1341 of the control valve 134 to be conducted. The oil in the valve group 13 is led into the power output device 40, and the power output device 40 lifts the suspension assembly 60, so that the agricultural machine is prevented from being flamed out in the operation process.

The agricultural machine controller 130 of the agricultural machine main body 100 is electrically connected to the controller unit 21 of the controller 20, wherein the agricultural machine controller 130 transmits the engine torque value C of the agricultural machine main body 100 to the controller unit 21, and the controller 20 controls the elevation or the lowering height of the power output apparatus 40 based on the engine torque value C. It is worth mentioning that the engine torque value of the engine 120 of the main agricultural machine 100 is different when the main agricultural machine 100 runs in different gears. Therefore, the controller 20 presets a standard engine torque value C0 based on the driving range of the agricultural machine 100. When the engine torque value C transmitted to the control unit 21 by the agricultural machine controller 130 approaches or is about to exceed the standard engine torque value C0 corresponding to the current operating gear of the agricultural machine 100, the controller 20 controls the switching valve 133 of the valve group 13 and the first control valve 1341 of the control valves 134 to be conducted. The oil in the valve group 13 is led into the power output device 40, and the power output device 40 lifts the suspension assembly 60, so that the agricultural machine is prevented from being flamed out in the operation process. The electro-hydraulic control system 200 further includes at least one displacement sensor 201, wherein the displacement sensor 201 is disposed on the power output device 40, and displacement information of the power output device 40 is collected by the displacement sensor 201. The displacement sensor 201 is electrically connected to the controller 20, and the displacement sensor 201 transmits the collected displacement information of the power output apparatus 40 to the controller 20, so that the controller 20 controls the on state of the valve set 13 of the hydraulic assembly 10 to control the power output apparatus 40.

When the electro-hydraulic system 200 is in the unloading state, the controller 20 controls the electromagnetic spill valve 132 of the valve group 13, and the reversing valve 133 and the control valve 134 are in the de-energized state. When the electrically controlled hydraulic system 200 needs to be lifted or lowered, the controller 20 controls the electromagnetic spill valve 132 of the valve block 13 to be in an electrically conductive state, and the electromagnetic spill valve 132 builds pressure. The controller 20 obtains an acceleration value (or a deceleration value) of the power output apparatus 40 and obtains the flow rate of the oil 50 required by the power output apparatus 40 based on the angle data information of the operating element 71 collected by the rotation angle sensor 72 of the operating device 70 and the data information collected by the angle sensor 80 and the hydraulic pressure sensor 90. The control unit 21 of the controller 20 individually controls the first direction valve unit 1331 of the direction valve 133 to be turned on; or the second direction valve unit 1332 is separately controlled to be conducted by the control unit 21; or the control unit 21 controls the first direction valve unit 1331 and the second direction valve unit 1332 to be in a conducting state together, so as to meet the flow demand of the power output device 40 for the oil 50.

Therefore, when the operation element 71 of the operation device 70 is operated, the corner controller 72 transmits the collected operation data information of the operation element 71 to the controller 20 in real time, and controls the valve unit of the valve block 13 to be opened or closed by the control unit 21 of the controller 20 based on the operation data information.

The electro-hydraulic system 200 has a floating hydraulic mode and a high pressure mode, and the operation mode of the electro-hydraulic system 200 is controlled by the control unit 21 of the controller 20. When the electro-hydraulic system 200 is in the floating mode, the oil 50 is pumped into the integration valve block 131 of the valve block 13. The controller 20 controls the electromagnetic overflow valve 132 of the valve set 13 to be energized to enable the valve set 13 to build pressure, and when the controller 20 controls the reversing valve 133 of the valve set 13 not to work, the controller 20 controls the first control valve 1341 of the control valve 134 to be energized, wherein the upper end of the driving cylinder 41 of the power output device 40 has no pressure, and the lower end of the driving cylinder 41 is pressed down. The power output device 40 of the electric control hydraulic system 200 is depressurized under the gravity and traction of the suspension assembly 60 until the power output shaft 42 of the power output device 40 descends to the position required by the operating device 70, and the valve group 13 is in a middle unloading state. When the controller 20 controls the first control valve 1341 to be powered on and controls the second control valve to be powered off, the lower end of the driving cylinder 41 of the power output device 40 maintains pressure, the upper end of the driving cylinder 41 has no pressure, and the suspension assembly 60 maintains a certain suspension height.

When the electro-hydraulic system 200 is in the floating hydraulic mode, when the hydraulic pressure value a detected by the hydraulic pressure sensor 90 approaches or is about to exceed the standard hydraulic pressure value a 0; or when the rotating speed value B of the main agricultural machinery 100 detected by the rotating speed sensor 1110 approaches or is about to exceed the standard rotating speed value B0; or when the engine torque value C transmitted by the agricultural machine controller 130 approaches or is about to exceed the set standard engine torque value C0, the controller unit 21 of the controller 20 adjusts the switching valve 133 of the valve group 13 and the first control valve 1341 controlling the control valve 134 to be switched on, so that the oil in the valve group 13 is introduced into the power output device 40. The power take-off 40 lifts the suspension assembly 60 upwards so that the hydraulic pressure value a, the rotational speed value B and the engine torque value C remain within preset values. When the hydraulic pressure value a, the rotating speed value B and the engine torque value C do not rise any more and fall back, the controller 20 controls the valve group 13 to stop the lifting of the power output device 40, and when the pressure applied to the electric control hydraulic system falls back, the controller 20 controls the lowering of the power output device 40 to reduce the height of the suspension assembly 60. When the controller 20 selects the strong pressure mode, the user operates the operating member 71 of the operating device 70, wherein the rotational angle sensor 72 collects the rotational angle of the operating member 71 and transmits the rotational angle data to the control unit 21 of the controller 20. The controller 20 controls the electromagnetic spill valve 132 to be opened, so that the valve group 13 builds pressure. The controller 20 controls the direction switching valve 133 and controls the first control valve 1341 or the second control valve 1342 of the control valve 134 to be opened, wherein the oil in the valve set 13 is introduced into the power output device 40, and the suspension assembly 60 is driven to ascend or descend by the power output device 40. When the controller 20 selects the high pressure mode, the operating element 71 of the operating device 70 stays at any position, and the controller 20 derives the rotation angle w0 of the power output device 40 driving the suspension assembly 60 based on the rotation angle of the operating element 71 collected by the rotation angle sensor 72. The angle sensor 80 detects the rotation angle w of the power output device 40 driving the suspension assembly 60 in real time, and if | w-w0| < w1, where w1 is a preset maximum angle difference value, it is not adjusted. Conversely, if | w-w0| ≧ w1, the controller 20 controls the raising or lowering of the power take-off 40 by controlling the selector valve 133 and the control valve 134 of the valve block 13 in such a manner as to control the flow of the oil 50 so that the power take-off 40 reaches the angular range corresponding to the operating element 71.

When the controller is in the high-pressure mode and the agricultural machine meets resistance or pressure in the operation process, the detected hydraulic pressure value A, the detected rotating speed value B and the detected engine torque value C are changed. If any of the detected data of the hydraulic pressure value a, the rotational speed value B, and the engine torque value C approaches or is about to exceed a preset standard value, the controller unit 21 of the controller 20 conducts by adjusting the directional valve 133 of the valve set 13 and the first control valve 1341 controlling the control valve 134. The oil 50 in the valve block 13 is led to the power take-off 40, wherein the power take-off 40 raises the suspension assembly 60 to reduce the hydraulic value a, the rotational speed value B and the engine torque value C to within preset standard value ranges.

According to another aspect of the present invention, the present invention further provides an automatic adjustment method of the electric control hydraulic system 200, wherein the automatic adjustment method comprises the following steps: (a) presetting a standard hydraulic pressure value A0;

(b) acquiring a hydraulic value A of a valve group 13, and generating a control signal if the hydraulic value A rises to be close to the preset standard hydraulic value A0, wherein the control signal controls the valve group 13 to start; and

(c) at least one switching valve 133 adjusting the valve block 13 and the first control valve 1341 controlling the control valve 134 are electrically conducted to lift the power take-off 40.

The above automatic adjustment method of the present invention further comprises, before the step (c), the steps of:

presetting a standard rotating speed value B0; and

detecting a rotation speed value B of an agricultural machinery main machine 100, and generating a control signal if the rotation speed value B rises to approach the preset standard rotation speed value B0, wherein the control signal controls the valve group 13 to start.

presetting at least one engine torque value C0; and

obtaining an engine speed value C of the agricultural machinery main unit 100, and generating a control signal if the engine speed value C rises to approach a preset engine torque value C0, wherein the control signal controls the valve group 13 to start.

In the step (c) of the above automatic adjustment method of the present invention, the method further includes the steps of:

detecting whether the hydraulic pressure value A, the rotating speed value B and the engine torque value C are reduced or not, and controlling to generate a control signal if the hydraulic pressure value A, the rotating speed value B and the engine torque value C are kept in a preset range, wherein the control signal controls the valve group 13 to be started; and

at least one reversing valve 133 of the valve block 13 and the second control valve 1342 controlling the control valve 134 are adjusted to be electrically conducted based on the control signal so that the power take-off 40 is reset.

The step (c) of the above automatic adjustment method of the present invention further comprises the steps of:

presetting a maximum angle difference value w 1;

detecting the rotation angle w of the power take-off 40 and deriving a rotation angle w0 at which the power take-off 40 drives the suspension assembly 60 based on the rotation angle of an operating element 71; and

if w-w0 ≧ w1, a control signal is generated, by which the directional valve 133 and the control valve 134 of the valve block 13 are controlled to control the direction of movement of the power take-off 40 by controlling the flow direction of the oil 50 so that the power take-off 40 reaches an angular range corresponding to the operating element 71.

It will be understood by those skilled in the art that the embodiments of the present invention as described above and shown in the drawings are given by way of example only and are not limiting of the present invention. The objects of the present invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the embodiments without departing from the principles, embodiments of the present invention may have any deformation or modification.

Claims

1. An automatically controlled hydraulic system is suitable for an agricultural machinery host computer, its characterized in that includes:

a hydraulic assembly;

2. The electro-hydraulic system of claim 1, further comprising a speed sensor for detecting a speed value B of the agricultural machine main body, the speed sensor being electrically connected to the controller, wherein the controller presets a standard speed value B0, and the controller sends a control signal to the hydraulic assembly based on a change in the speed value B so that the speed value B is maintained within the standard speed value B0.

3. The electro-hydraulic system of claim 1, the controller adapted to be communicatively coupled to an agricultural machine controller of the agricultural machine host, the agricultural machine controller transmitting an engine torque value C of the agricultural machine host to the controller, wherein the controller presets at least a standard engine torque value C0, the controller sending control signals to the hydraulic assembly such that the engine torque value C is maintained within the standard engine torque value C0.

4. The electro-hydraulic system of claim 2, the controller adapted to be communicatively coupled to an agricultural machine controller of the agricultural machine host, the agricultural machine controller transmitting an engine torque value C of the agricultural machine host to the controller, wherein the controller presets at least a standard engine torque value C0, the controller sending control signals to the hydraulic assembly such that the engine torque value C is maintained within the standard engine torque value C0.

5. The electro-hydraulic control system according to claim 4, wherein the hydraulic assembly comprises a tank, at least one oil pump, and at least one valve block, wherein the oil pump delivers the oil stored in the tank to the valve block, wherein the valve block is electrically connected to the controller, and the controller controls the direction of the oil flow in the valve block.

6. The electro-hydraulic control system according to claim 5, wherein the valve block further comprises an integration valve block, at least one electromagnetic spill valve, at least one directional control valve, and at least one control valve, wherein the electromagnetic spill valve, the directional control valve, and the control valve are electrically connected to the controller, and the controller controls the electrical conduction state of the electromagnetic spill valve, the directional control valve, and the control valve, wherein when the directional control valve is energized, the directional control valve controls the flow direction of the oil, and when the controller controls the control valve to be energized, the oil in the valve block is transmitted to the power take-off and the power take-off outputs hydraulic power.

7. The electro-hydraulic control system of claim 6, wherein the directional control valve comprises a first directional control valve unit and a second directional control valve unit, wherein the first directional control valve unit and the second directional control valve unit are electrically connected to the controller, and wherein the first directional control valve unit and the second directional control valve unit control the flow rate of the oil within the valve block.

8. The electro-hydraulic control system of claim 7, wherein the first directional valve unit controls a flow rate of the oil less than a flow rate of the oil controlled by the second directional valve unit, and the controller controls the electrical conduction state of the first directional valve unit and the second directional valve unit individually.

9. The electro-hydraulic control system of claim 6, wherein the valve block further includes at least one adapter, wherein the adapter is communicatively coupled to the manifold block, wherein the control valve controls the opening and closing of the adapter, and wherein the manifold block transfers the oil to the power take-off via the adapter when the control valve is controlled by the controller to be electrically conductive.

10. The electro-hydraulic system of claim 9, wherein the control valve further comprises a first control valve and a second control valve, wherein the first control valve and the second control valve are disposed on the integration valve block, wherein the power take-off is lifted by the oil to output a driving force when the first control valve is electrically conductive, and wherein the power take-off is lowered by the oil to output a driving force when the second control valve is electrically conductive.

11. The electro-hydraulic system of claim 10, wherein the power take-off comprises at least one drive cylinder and at least one power take-off shaft, wherein the power take-off shaft is drivably connected to the drive cylinder, the valve block is communicably connected to the drive cylinder via the adapter, and the oil drives the power take-off shaft up when the first control valve is conductive and drives the power take-off shaft down when the second control valve is conductive.

12. The electro-hydraulic system of claim 6, wherein the valve block further comprises at least one external hydraulic control valve and at least one external hydraulic adapter, wherein the external hydraulic control valve and the external hydraulic adapter are disposed on the integrated valve block, the external hydraulic control valve controls opening and closing of the external hydraulic adapter, the external hydraulic control valve is electrically connected to the controller, and the controller controls the electrical continuity of the external hydraulic control valve to provide hydraulic kinetic energy to an external tool via the external hydraulic adapter.

13. The electrically controlled hydraulic system according to any one of claims 6 to 12, further comprising an operating device, wherein said operating device is electrically connected to said controller, said operating device further comprising an operating element and at least one rotation angle sensor, wherein said rotation angle sensor is provided to said operating element and said rotation angle sensor is electrically connected to said controller, and data information of said detected operating element is transmitted by said rotation angle sensor to said controller in real time for said controller to control said valve group of said hydraulic assembly based on an operation data information.

14. The electro-hydraulic control system according to claim 13, further comprising at least one angle sensor and at least one suspension assembly, wherein the angle sensor is disposed at the power take-off, the angle sensor collects a rotation angle w of the power take-off, the angle sensor is electrically connected to the controller, wherein the controller presets a maximum angle difference w1, the controller derives a rotation angle w0 of the suspension assembly driven by the power take-off based on the rotation angle of the operating member when the operating member stays at any position, and generates a control signal if | w-w0| ≧ w1, the directional control valve and the control valve of the valve block are controlled by the control signal to control the moving direction of the power take-off by controlling the flow direction of the oil, so that the power output means reaches an angular range corresponding to the operating element.

15. An agricultural machine, comprising:

an agricultural machinery host; and

a hydraulic assembly;

16. The agricultural machine of claim 15, wherein the electro-hydraulic system of the agricultural machine further comprises at least one connecting bracket, wherein the connecting bracket secures the power take-off to the agricultural machine main frame.

17. The agricultural machine of claim 15, wherein the agricultural machine host further comprises at least one engine with at least one agricultural machine body disposed thereon and an agricultural machine controller, wherein the agricultural machine controller is communicatively connected to the controller, the engine torque of the engine being transmitted by the agricultural machine controller to the controller in real time.