CN213116893U - Agricultural machine and electric control hydraulic system thereof - Google Patents

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 between the power take off to and an at least operating means. The power output device is connected with the hydraulic assembly in a conducting manner, wherein the power output device outputs hydraulic power in a transmission manner of the oil, wherein the operating device is electrically connected with the controller, the operating device further comprises an operating element and at least one rotation angle sensor, the rotation angle sensor is arranged on the operating element, the rotation angle sensor is electrically connected with the controller, a rotation angle change value of the operating element is collected by the rotation angle sensor, and the controller controls the hydraulic assembly based on the rotation angle change value to control the transmission speed and the transmission direction of the oil.

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.

In addition, the lifting speed of the agricultural machinery hydraulic lifter in the prior art is raised or lowered in a constant speed mode according to the preset oil flow speed. That is to say, the agricultural machinery man can't adjust the speed of drive speed in good time according to the demand when operating agricultural machinery hydraulic pressure lifting mechanism. Generally, for safety reasons, the lifting speed of the agricultural hydraulic machine of the prior art is relatively slow, which inevitably causes the lifting and lowering speed of the agricultural machine to be relatively slow during operation.

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 discloses a main advantage lies in providing an agricultural machinery and automatically controlled hydraulic system thereof, 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 present invention is to provide an agricultural machine and an electric hydraulic system thereof, wherein the electric hydraulic system automatically controls the hydraulic fluid flow rate according to the angle of the driving stroke, thereby controlling the driving speed of the electric hydraulic system.

Another advantage of the present invention lies in providing an agricultural machinery and automatically controlled hydraulic system thereof, wherein automatically, the hydraulic fluid flow rate of automatically regulated of automatically controlled hydraulic system according to the angle of drive stroke, so that work as when automatically controlled hydraulic system's drive stroke is great with fast drive of faster speed, when forming less automatically controlled hydraulic system drives with less drive speed at a slow speed.

Another advantage of the present invention is to provide an agricultural machine and an electric hydraulic system thereof, wherein the electric hydraulic system automatically adjusts the flow rate of the oil according to the driving stroke angle, which is favorable for saving time and improving the safety of the equipment.

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 hydraulic system's the hydraulic pressure action has simplified hydraulic system's the operation degree of difficulty.

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, 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 controller, wherein the hydraulic assembly is electrically connected to the controller; and

and the operating device is electrically connected with the controller, the operating device further comprises an operating element and at least one rotation angle sensor, the rotation angle sensor is arranged on the operating element, the rotation angle sensor is electrically connected with the controller, and a rotation angle change value of the operating element is acquired by the rotation angle sensor, wherein the controller controls the hydraulic assembly based on the rotation angle change value so as to control the transmission speed and the transmission direction of the oil.

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 two at least switching-over valve units, wherein connect in parallel each other between the switching-over valve unit and independently set up in integrated valve piece.

According to the utility model discloses an embodiment, the switching-over valve unit is voltage proportion switching-over valve, the controller is through control the voltage value size control of switching-over valve unit in the valves the flow velocity of fluid.

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 the utility model discloses an embodiment, further include at least an angle sensor, wherein angle sensor set up in power take-off, angle sensor gathers power take-off's a feedback angle alpha, wherein the controller is based on feedback angle alpha reachs the valves is carried extremely power take-off's fluid flow value Z, the controller is based on feedback angle alpha fluid flow value Z control the switching-over valve with the control valve.

According to an embodiment of the present invention, the controller determines the feedback angle α and β, where β is a predetermined value relationship, and if the feedback angle α is not greater than β, the controller generates voltage control information of a spool opening degree of the directional control valve, where the spool opening degree of the directional control valve corresponds to a rotational acceleration of the operating element, and if the feedback angle α > β, divides a flow value Z corresponding to the feedback angle α into an X flow section and a Y flow section, where Z is X + Y, α is β + γ, where β corresponds to the X flow section, γ corresponds to the Y flow section, generates the voltage control information of the spool opening degree of the directional control valve, and a flow velocity of the oil of the Y flow section is greater than a flow velocity of the oil of the X flow section.

According to an embodiment of the present invention, further include an at least hydraulic pressure sensor, wherein the hydraulic pressure sensor is set up in the hydraulic pressure subassembly the valves, and the hydraulic pressure sensor electrical connection in the controller, by the hydraulic pressure sensor detects the oil hydraulic pressure of valves and the pressure data transmission who will detect extremely the controller, by the controller is based on the pressure data control the hydraulic pressure subassembly the valves.

According to another aspect of the present invention, the present invention further provides a hydraulic driving method, wherein the hydraulic driving method includes the steps of:

(a) an electromagnetic overflow valve electrically connected with a valve group, wherein the electromagnetic overflow valve establishes the hydraulic pressure of the electric control hydraulic system;

(b) acquiring the rotation angle change of an operating element of an operating device, and obtaining a control signal based on the rotation angle change; and

(c) and at least one reversing valve and a control valve are electrically conducted based on the control signal so as to control the flow direction and the flow speed of the oil in the valve group, and the oil controls the driving direction and the driving speed of a power output device.

According to an embodiment of the present invention, in the step (b), the method further includes:

(b.1) the collected data information is transmitted to a controller, and the controller obtains the rotation acceleration of the operating element based on the collected rotation angle data information; and

(b.2) obtaining the flow speed required for controlling the oil liquid based on the rotation acceleration.

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

and acquiring a feedback angle alpha of the power output device, and obtaining a flow value Z of the oil liquid required by the power output device to move to a corresponding angle alpha.

According to an embodiment of the present invention, in step (c), the controller controls the spool opening of the directional valve based on the detected feedback angle α and the corresponding flow value Z, by which the directional valve controls the flow direction and the flow value of the oil.

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

judging the relation between the feedback angle alpha and beta, wherein beta is a preset value, and if the feedback angle alpha is not more than beta, generating voltage control information of the valve core opening degree of the reversing valve, wherein the valve core opening degree of the reversing valve corresponds to the rotation acceleration of the operating element; and if the feedback angle alpha is larger than beta, dividing the flow value Z corresponding to the feedback angle alpha into an X flow section and a Y flow section, wherein Z is X + Y, and alpha is beta + gamma, beta corresponds to the X flow section, gamma corresponds to the Y flow section, generating voltage control information of the opening degree of a valve core of the reversing valve, and the flow speed of the oil liquid in the Y flow section is larger than that of the oil liquid in the X flow section.

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

controlling the reversing valve unit of the reversing valve to be electrically conducted, controlling the opening degree of a valve core of the reversing valve unit according to the angle change of the rotation angle sensor, and passing through the oil liquid of a Y flow section corresponding to gamma; and

and when the feedback angle reaches beta, controlling the reversing valve unit of the reversing valve to be electrically conducted, controlling the opening degree of a valve core of the reversing valve unit according to the angle change of the rotation angle sensor, and passing through the oil liquid of the X flow section corresponding to the beta, wherein the valve core of the reversing valve unit is slowly attached.

According to the utility model discloses an on the other hand, this method utility model further provides 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;

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 controller, wherein the hydraulic assembly is electrically connected to the controller; and

and the operating device is electrically connected with the controller, the operating device further comprises an operating element and at least one rotation angle sensor, the rotation angle sensor is arranged on the operating element, the rotation angle sensor is electrically connected with the controller, and a rotation angle change value of the operating element is acquired by the rotation angle sensor, wherein the controller controls the hydraulic assembly based on the rotation angle change value so as to control the transmission speed and the transmission direction of the oil.

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.

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 switching valve 133 further includes at least two direction switching valve units 1331, wherein the direction switching valve units 1331 are connected in parallel with each other and are independently disposed on the integrated valve block 131, and the direction switching valve units 1331 control the transmission direction and the transmission speed of the oil 50 in the integrated valve block 131. Wherein the direction valve unit 1331 is electrically connected to the controller 20, and the controller 20 controls the operation state of the direction valve unit 1331, such as voltage, current value, etc.

It is worth mentioning that the controller 20 may control one or more of the directional valve units 1331 of the directional valve 133 to be activated to adjust the flow rate of the oil in the valve block 13 by opening the directional valve units 1331.

Preferably, in this preferred embodiment of the present invention, the direction valve unit 1331 of the valve group 13 may be, but is not limited to, a voltage proportional direction valve, that is, the valve core opening size of the direction valve unit 1331 is related to the voltage value of the direction valve unit 1331, so as to adjust the flow rate of the control oil of the valve group 13 according to the voltage proportion. In the preferred embodiment of the present invention, the controller 20 controls the flowing direction and flowing speed of the oil in the valve set 13 by controlling the voltage value of the reversing valve 133 and the polarity of the voltage.

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.

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, an electro-proportional reversing 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, so that the power output device 40 outputs hydraulic power at a fast driving speed.

When a user operates the operating element 71 of the operating device 70 to control the power output device 40 of the electronic control hydraulic system 200 to drive, the controller 20 calculates an oil flow value Z transmitted from the valve group 13 to the power output device 40 based on the feedback angle α collected by the angle sensor 80. The controller 20 automatically controls the direction switching valve 133 and the control valve 134 of the valve block 13 based on the direction and magnitude of the feedback angle α of the angle sensor 80, and controls the flow direction and the flow rate velocity of the oil 50 in the valve block 13 through the direction switching valve 133 to control the driving speed of the power output apparatus 40.

In detail, when the feedback angle α ≦ β of the operation element 71, (where β is a predetermined value), the controller 20 controls the switching valve 133 that opens the valve block 13 at a small activation voltage, so that the switching valve 133 controls the flow speed of the oil 50 in the valve block 13 at a small flow rate, thereby moving the power output apparatus 40 slowly. When the feedback angle α of the operating element 71 is greater than β (where β is a predetermined value), the controller 20 calculates the flow rate value Z of the oil 50 required for the power output device 40 to move to a corresponding angle according to the magnitude of the corresponding value of the feedback angle α. The controller 20 divides the flow value Z corresponding to the feedback angle α into an X flow segment and a Y flow segment, where Z is X + Y. α ═ β + γ, where β corresponds to the X flow segment and γ corresponds to the Y flow segment. The controller 20 controls the oil 50 in the valve set 13 to be transmitted to the power output device 40 at different flow rates in the X flow rate section and the Y flow rate section, that is, the power output device 40 outputs driving acting force at different driving speeds in the X flow rate section and the Y flow rate section of the oil 50. It is worth mentioning that the controller 20 controls the flow rate of the oil 50 in the Y flow section to be greater than the flow rate of the oil 50 in the X flow section.

When the user operates the operating element 71 of the operating device 70, the rotational angle sensor 72 collects an angular change of the operating element 71, and the controller 20 automatically calculates a control voltage required for the direction switching valve 133 based on an angular change acceleration a of the rotational angle sensor 72 to control a valve element opening degree of the direction switching valve unit 1331 of the direction switching valve 133. When the feedback angle α is determined, the controller 20 controls the switching valve unit 1331 of the switching valve 133 to be opened, controls the opening degree of the spool of the switching valve unit 1331 according to the angle change of the rotation angle sensor 72, and passes through the oil 50 of the Y flow rate section corresponding to γ. When the feedback angle reaches β, the controller 20 controls the switching valve unit 1331 of the switching valve 133 to be opened, controls the valve core opening degree of the switching valve unit 1331 according to the angle change of the rotation angle sensor 72, and passes through the oil 50 of the X flow rate section corresponding to β, wherein the valve core of the switching valve unit 1331 is slowly attached.

According to another aspect of the present invention, the present invention further provides a hydraulic driving method of an electric control hydraulic system, wherein the hydraulic driving method includes the steps of:

(a) an electromagnetic spill valve 132 electrically connected to a valve block 13, wherein the electromagnetic spill valve 132 establishes the hydraulic pressure of the electro-hydraulic control system 200;

(b) acquiring a rotation angle change of an operation element 71 of an operation device 70, and obtaining a control signal based on the rotation angle change; and

(c) at least one direction change valve 133 and a control valve 134 are electrically conducted based on the control signal to control the flow direction and the flow rate of the oil in the valve block 13, and the oil 50 controls the driving direction and the driving speed of a power output device 40.

In the step (b) of the hydraulic drive method of the present invention, the method further includes:

(b.1) the collected data information is transmitted to a controller 20, and the controller 20 obtains the rotational acceleration of the operating element 71 based on the collected rotational angle data information; and

(b.2) obtaining the flow speed required for controlling the oil liquid based on the rotation acceleration.

The step (b) of the hydraulic driving method of the present invention further includes the steps of:

and acquiring a feedback angle alpha of the power output device 40, and obtaining a flow value Z of the oil liquid 50 required by the power output device 40 to move to a corresponding angle alpha. Accordingly, in step (c), the controller controls the spool opening of the direction switching valve 133 based on the detected feedback angle α and the corresponding flow rate value Z, and controls the flow direction and flow rate value of the oil by the direction switching valve 133. It is worth mentioning that when the electro-hydraulic system 200 is controlled to be raised, the controller 20 electrically conducts the first control valve 1341 of the control valve 134; when the electro-hydraulic system 200 controls the descent, the controller 20 electrically conducts the second control valve 1342 of the control valves 134.

The step (b) of the hydraulic driving method of the present invention further includes the steps of:

judging the relation between the feedback angle alpha and beta (wherein beta is a preset value); and

if the feedback angle α is not greater than β, voltage control information of a spool opening degree of the switching valve 133 is generated, wherein the spool opening degree of the switching valve 133 corresponds to a rotational acceleration of the operating element 71, and if the feedback angle α > β, a flow rate value Z corresponding to the feedback angle α is divided into an X flow rate section and a Y flow rate section, wherein Z is X + Y, α is β + γ, wherein β corresponds to the X flow rate section, γ corresponds to the Y flow rate section, voltage control information of the spool opening degree of the switching valve 133 is generated, and a flow speed of the oil 50 of the Y flow rate section is greater than a flow speed of the oil 50 of the X flow rate section.

In the present invention, the step (c) of the hydraulic driving method further includes the steps of:

when the feedback angle α is large, the switching valve unit 1331 of the switching valve 133 is controlled to be electrically conducted, the opening degree of the spool of the switching valve unit 1331 is controlled according to the angle change of the rotation angle sensor 72, and the oil 50 of the Y flow section corresponding to γ is passed; and

when the feedback angle reaches β, the direction valve unit 1331 of the direction valve 133 is controlled to be electrically conducted, the opening degree of the valve spool of the direction valve unit 1331 is controlled according to the angle change of the rotation angle sensor 72, and the oil 50 of the X flow rate section corresponding to β passes through, wherein the valve spool of the direction valve unit 1331 is slowly attached.

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 the hydraulic pressure of the oil 50 in the valve set 13. 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 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 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 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 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.

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 (16)

1. An electrically controlled hydraulic system, comprising:

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 controller, wherein the hydraulic assembly is electrically connected to the controller; and

and the operating device is electrically connected with the controller, the operating device further comprises an operating element and at least one rotation angle sensor, the rotation angle sensor is arranged on the operating element, the rotation angle sensor is electrically connected with the controller, and a rotation angle change value of the operating element is acquired by the rotation angle sensor, wherein the controller controls the hydraulic assembly based on the rotation angle change value so as to control the transmission speed and the transmission direction of the oil.

2. The electro-hydraulic control system according to claim 1, 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.

3. The electro-hydraulic control system according to claim 2, 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.

4. The electro-hydraulic system of claim 3, wherein the directional valve includes at least two directional valve units, wherein the directional valve units are connected in parallel with each other and are independently disposed on the integrated valve block.

5. The electro-hydraulic control system according to claim 4, wherein the reversing valve unit of the reversing valve is a voltage proportional reversing valve, and the controller controls the flow rate of the oil in the valve block by controlling the voltage value of the reversing valve unit.

6. The electro-hydraulic control system of claim 3, 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.

7. The electro-hydraulic system of claim 6, 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.

8. The electro-hydraulic system of claim 7, 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.

9. The electro-hydraulic system of claim 3, 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.

10. The electro-hydraulic control system according to claim 2, further comprising at least one angle sensor, wherein the valve block further comprises at least one directional control valve and at least one control valve, wherein the angle sensor is disposed at the power take-off, the angle sensor acquiring a feedback angle a of the power take-off, wherein the controller derives an oil flow value Z delivered by the valve block to the power take-off based on the feedback angle a, the controller controlling the directional control valve and the control valve based on the oil flow value Z of the feedback angle a.

11. An electro-hydraulic system according to any one of claims 3 to 9, further comprising at least one angle sensor, wherein the angle sensor is disposed at the power take-off, the angle sensor sensing a feedback angle α of the power take-off, wherein the controller derives an oil flow value Z delivered by the valve block to the power take-off based on the feedback angle α, the controller controlling the reversing valve and the control valve based on the oil flow value Z of the feedback angle α.

12. The electro-hydraulic control system according to claim 10, wherein the controller determines the feedback angles α and β, where β is a predetermined value relationship, and if the feedback angle α is not greater than β, the controller generates voltage control information of a spool opening degree of the directional valve, where the spool opening degree of the directional valve corresponds to a rotational acceleration of the operating element, and if the feedback angle α > β, divides a flow value Z corresponding to the feedback angle α into an X flow section and a Y flow section, where Z is X + Y, α is β + γ, where β corresponds to the X flow section, γ corresponds to the Y flow section, generates voltage control information of the spool opening degree of the directional valve, and a flow speed of the oil of the Y flow section is greater than a flow speed of the oil of the X flow section.

13. The electro-hydraulic control system according to claim 11, wherein the controller determines the feedback angles α and β, where β is a predetermined value relationship, and if the feedback angle α is not greater than β, the controller generates voltage control information of a spool opening degree of the directional valve, where the spool opening degree of the directional valve corresponds to a rotational acceleration of the operating element, and if the feedback angle α > β, divides a flow value Z corresponding to the feedback angle α into an X flow section and a Y flow section, where Z is X + Y, α is β + γ, where β corresponds to the X flow section, γ corresponds to the Y flow section, generates voltage control information of the spool opening degree of the directional valve, and a flow speed of the oil of the Y flow section is greater than a flow speed of the oil of the X flow section.

14. The electro-hydraulic system of claim 10, further comprising at least one hydraulic sensor, wherein the hydraulic sensor is disposed in the valve block of the hydraulic assembly and is electrically connected to the controller, wherein the hydraulic sensor senses oil pressure in the valve block and transmits sensed pressure data to the controller, and wherein the controller controls the valve block of the hydraulic assembly based on the pressure data.

15. The electro-hydraulic system of claim 11, further comprising at least one hydraulic sensor, wherein the hydraulic sensor is disposed in the valve block of the hydraulic assembly and is electrically connected to the controller, wherein the hydraulic sensor senses oil pressure in the valve block and transmits sensed pressure data to the controller, and wherein the controller controls the valve block of the hydraulic assembly based on the pressure data.

16. An agricultural machine, comprising:

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;

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 controller, wherein the hydraulic assembly is electrically connected to the controller; and

and the operating device is electrically connected with the controller, the operating device further comprises an operating element and at least one rotation angle sensor, the rotation angle sensor is arranged on the operating element, the rotation angle sensor is electrically connected with the controller, and a rotation angle change value of the operating element is acquired by the rotation angle sensor, wherein the controller controls the hydraulic assembly based on the rotation angle change value so as to control the transmission speed and the transmission direction of the oil.

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