CN109488700A - Electrichydraulic control clutch and engine control system - Google Patents
Electrichydraulic control clutch and engine control system Download PDFInfo
- Publication number
- CN109488700A CN109488700A CN201811609674.6A CN201811609674A CN109488700A CN 109488700 A CN109488700 A CN 109488700A CN 201811609674 A CN201811609674 A CN 201811609674A CN 109488700 A CN109488700 A CN 109488700A
- Authority
- CN
- China
- Prior art keywords
- hydraulic
- engine
- clutch
- solenoid valve
- oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D25/00—Fluid-actuated clutches
- F16D25/12—Details not specific to one of the before-mentioned types
- F16D25/14—Fluid pressure control
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D41/00—Combines, i.e. harvesters or mowers combined with threshing devices
- A01D41/12—Details of combines
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D69/00—Driving mechanisms or parts thereof for harvesters or mowers
- A01D69/02—Driving mechanisms or parts thereof for harvesters or mowers electric
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D69/00—Driving mechanisms or parts thereof for harvesters or mowers
- A01D69/08—Clutches
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/08—Circuits or control means specially adapted for starting of engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/08—Circuits or control means specially adapted for starting of engines
- F02N11/087—Details of the switching means in starting circuits, e.g. relays or electronic switches
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D25/00—Fluid-actuated clutches
- F16D25/08—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
一种电液控制离合机构以及一种发动机控制系统，该电液控制离合机构设置有电液控制系统，通过电液控制系统实现离合机构的动作控制，所述电液控制系统包括有电控系统以及液压驱动系统；所述电控系统包括有钥匙门，与所述钥匙门的预热档连接一条预热档连接线，通过该预热档连接线用于实现液压驱动系统上离合油缸的自动卸油。本发明中，液压驱动系统可在发动机启动前自动检测、自动卸载并切断发动机与割台传动、脱谷传动的动力，具有防止发动机带载启动，保护发动机的功能。设置有单向节流阀，可实现离合动作过程的缓慢结合以及快速分离。行程开关可自动切断油缸动作，使传动皮带达到设置的张紧度，另外对于皮带张紧度的调节易于实现。
An electro-hydraulic control clutch mechanism and an engine control system, the electro-hydraulic control clutch mechanism is provided with an electro-hydraulic control system, the action control of the clutch mechanism is realized by the electro-hydraulic control system, and the electro-hydraulic control system includes an electric control system and a hydraulic drive system; the electronic control system includes a key door, and a preheat gear connection line is connected to the preheat gear of the key door, and the preheat gear connection line is used to realize the automatic switching of the clutch cylinder on the hydraulic drive system. Unload oil. In the present invention, the hydraulic drive system can automatically detect, automatically unload and cut off the power of the engine, the header transmission and the threshing transmission before the engine is started, and has the function of preventing the engine from starting with load and protecting the engine. A one-way throttle valve is provided, which can realize the slow combination and rapid separation of the clutch action process. The travel switch can automatically cut off the action of the oil cylinder, so that the transmission belt can reach the set tension, and the adjustment of the belt tension is easy to achieve.
Description
Technical field
The present invention relates to technical field of agricultural mechanical equipment, more specifically, in particular to a kind of electrichydraulic control clutch
Structure and a kind of engine control system.
Background technique
Grain combine be a kind of harvesting that can once complete cereal crops, threshing, separation stem, remove it is miscellaneous remaining
Etc. processes, the cereal harvesting machinery of grain is directly obtained from field.
Grain combine has complicated and diversified transmission system as a kind of powerful farm machinery, such as cuts
Platform transmission, shelling transmission, grain-unloading driving etc..And above-mentioned transmission system is not to need to transmit power constantly, for example, harvesting
Shi Caihui operates the ceding of Taiwan, and the ceding of Taiwan then shuts down when not gathering in；Unloading Shi Caihui makes grain-unloading driving operation, in other times
Then shut down；Shelling (threshing) device is only operated in harvesting, is then shut down in other times.Therefore, on harvester often
There are many normal arrangements, multiple arrangement of clutch, to meet the power cut of different execution movements, the work requirements of combination.
In addition, according to harvester driver's working specification: it is required that machine hand before parking (before engine misses) by all biographies
Dynamic clutch is manipulated to the state of power transmitting cutting, and engine is in unloaded shape when to guarantee starting engine next time
State.
Referring to FIG. 1, Fig. 1 be in the prior art it is a kind of typically applied to the transmission device on grain combine from
Close the simplified schematic diagram of mechanism.
Currently, using the knot of the more typical grain combine transmission device clutch of relatively broad, structure
Structure is as follows, includes control stick a, tooth plate b and link mechanism c, is provided with control button on control stick a, on control stick a
It is additionally provided with rest shoe, rest shoe and control button link, and the locating slot with rest shoe cooperation is provided on tooth plate b, presses control button
Afterwards, the locating slot on rest shoe and tooth plate b is detached from, so as to above mention or push control stick a, control stick a and link mechanism c
It connects and tensioning wheel (component part of clutch) can be driven to compress belt by link mechanism c or keep it de- with belt
From.
In conjunction with Fig. 1, above-mentioned grain combine is as follows with the working principle of transmission device clutch:
Shelling clutch control: control button is pressed, and is mentioned on control stick, is caught in rest shoe in the upper locating slot of tooth plate,
At this moment shelling part is started to work；When separation, by lower-pilot knob, control stick is rotated back into downwards disengaged position, i.e. stopping work
Make.When starting the engine, if this control stick is in binding site, engine cannot be activated, therefore, it is necessary to be at
Engine can be started when disengaged position.
Ceding of Taiwan clutch control: control button is pressed, and is mentioned on control stick, is caught in rest shoe in the upper locating slot of tooth plate,
At this moment header part is started to work；When separation, by lower-pilot knob, control stick is rotated back into downwards disengaged position, the ceding of Taiwan stops
Only work.
Shelling, unloading clutch are after one end time that works, and belt is since its length of aging can increased, belt elongation
It is just unable to satisfy the requirement of rate of tension, thus needs to carry out structure tune with transmission device clutch to grain combine
It is whole, it adjusts complicated for operation, cumbersome.
In conclusion existing grain combine transmission device clutch there are manipulation process laborious, structure
The problems such as complicated, space layout is limited, structural adjustment difficulty is big.
Therefore, how structure optimization is carried out with transmission device clutch to grain combine, to solve its institute
The laborious problem of existing manipulation process, becomes those skilled in the art's urgent problem to be solved.
Summary of the invention
The object of the present invention is to provide a kind of harvester clutch easy to use, by fluid power system to
Bearing up pulley is controlled, to realize the transmitting and cutting of power, the system composition of fluid power system is small in size, is pacified convenient for system
It is filled with and structural adjustment.
Technical solution provided by the invention is as follows:
The present invention provides a kind of electrichydraulic control clutches, include tensioning wheel.In order to realize to tensioning wheel
Electric-liquid type control, the invention also includes；
Clutch oil cylinder with rodless cavity and rod chamber, the rodless cavity, rod chamber are circumscribed with oil inlet pipe, the oil inlet
Pipeline is connected to and is formed into a loop with hydraulic oil container；
Solenoid valve, under different working condition, the spool of the solenoid valve shifts to different location, controls the hydraulic oil container
Pressure oil flow into the oil inlet pipe；
Hydraulic selector is arranged on the oil inlet pipe of the clutch oil cylinder；It is in the open state in the solenoid valve, it is described
Hydraulic oil flows to the rodless cavity or rod chamber by the hydraulic selector；
When the hydraulic oil flows to the rodless cavity, the rod chamber oil return to the hydraulic oil container；The clutch oil
The piston rod of cylinder stretches out, and tensioning wheel is made to press to the belt between engine and executing agency；
When the hydraulic oil flows to the rod chamber, the rodless cavity oil return to the hydraulic oil container；The clutch oil
The piston rod of cylinder is retracted, and tensioning wheel is made to leave the belt between engine and executing agency.
Preferably, the oil inlet pipe include: connection be arranged between the rodless cavity, the hydraulic oil container without bar into
Oily branch；Connection, which is arranged between the rod chamber, the hydraulic oil container, bar oil inlet branch.
Preferably, one-way throttle valve is arranged on the no bar oil inlet branch road；When the hydraulic oil flows to the rodless cavity
When, the throttle orifice of the one-way throttle valve is in effective status, so that the piston rod of the clutch oil cylinder slowly stretches out；When described
When hydraulic oil flows to the rod chamber, the throttle orifice of the one-way throttle valve is in failure state, the piston of the clutch oil cylinder
Bar is quickly retracted.
Preferably, the hydraulic selector includes: tool there are two the hydraulic lock of check valve, and a check valve is arranged in the nothing
Bar oil inlet branch road, the setting of another check valve have on bar oil inlet branch road described；It is in the open state in the solenoid valve, institute
Stating hydraulic oil pushes the check valve in the open state.
Preferably, the invention also includes: the travel switch of the piston rod position is detected, when the piston rod touches institute
When stating travel switch, the solenoid valve power-off, the valve core reset of the solenoid valve cuts off the pressure oil and flows to the clutch oil
Cylinder.
Based on above-mentioned electrichydraulic control clutch, the present invention also provides a kind of engine control system, the engines
Control system is equipped with above-mentioned electrichydraulic control clutch.In addition, engine control system provided by the invention further include:
Power supply unit, switch control unit, engine, solenoid valve, key door are connected and are formed into a loop；
The switch control unit controls the electric power thus supplied of the power supply unit；
In power supply unit power supply, the key door controls the engine in pre- Warm status, changes the electromagnetism
The spool position of valve is connected to the rodless cavity of clutch oil cylinder with hydraulic oil container, and the piston rod of the clutch oil cylinder is retracted, and makes to be tensioned
Wheel leaves the belt between engine and executing agency.
Preferably, the key door includes: starting shelves terminals, and the starting shelves terminals pass through the switch control list
The coil of starting relay in member is connected to the power supply unit；One end of the contact of the starting relay is connected to described
Starter in switch control unit, the starter are connected to the power supply unit；The contact of the starting relay it is another
One end is connected to the power supply unit.
Preferably, the key door includes: preheating shelves terminals, and the preheating shelves terminals connect the solenoid valve, institute
It states solenoid valve and is also attached to the power supply unit.
Preferably, the key door includes: a fire screen terminals, and described fire screen terminals are connected to the switch control
The relay of unit, described fire screen terminals are also attached to the ignition switch of control unit, and the relay is connected to described
Power supply unit.
Preferably, the key door further include: lock shelves terminals, the latchings shelves terminals pass through fuse, meltable
Line is connected to the power supply unit.
By said structure design, the innovation of the invention consists in that:
1, a set of fluid power system is provided, tensioning wheel is controlled by fluid power system, to realize dynamic
The system composition of the transmitting and cutting of power, fluid power system is small in size, convenient for system installation and structural adjustment.For hydraulic
The control of drive system can be realized by the relatively simple button type switch device of structure, can be realized simplified clutch
The purpose of structure operation, but also can reduce controlling equipment in the occupied space for driving indoor location.It is pressed in addition, the present invention uses
Key swich manipulation, manipulation is comfortably convenient, structure is simple, is easy to steerable system location arrangements.
2, being provided with can be to the preheating shelves connecting line that solenoid valve is controlled, by preheating the available hair of shelves connecting line
Signal before motivation starting, to be unloaded before an engine is started by solenoid valve to clutch oil cylinder.The present invention by pair
The structure optimization of fluid power system is provided with the ceding of Taiwan, the automatic offloading functions of shelling clutch, obtains hair by preheating shelves connecting line
Signal before motivation starting, it is automatic before an engine is started to detect, unload and cut off automatically engine and ceding of Taiwan transmission, shelling biography
Dynamic power prevents engine band to carry starting, protects the function of engine so that the present invention is provided with.
3, it is provided with hydraulic lock in fluid power system, the present invention can be made to have the function of electrical interlocks, to mention
The stability that high tensioning wheel state is kept, and then achieve the purpose that improve operational reliability of the present invention.
4, the present invention using piston rod stretching, withdraw actuation realize clutch from, close, and by key door
Sequence of movement control logic, the in this way installation convenient for preheating shelves connecting line may be implemented in structure design.
5, the present invention is provided with one-way throttle valve in fluid power system, and connection oil may be implemented by one-way throttle valve
The one-way throttle of pipe realizes slow fuel feeding when to clutch oil cylinder rodless cavity fuel feeding, real in clutch oil cylinder rodless cavity emptying
Now quick emptying.Since slow combination and the quick separating of clutch action process may be implemented provided with one-way throttle valve, from
The slow combination of conjunction movement, can suddenly increase to avoid engine loading, to realize the mesh of protection engine and driving belt
, the quick separating of clutch action can quickly cut off engine and transmit to the ceding of Taiwan, shelling power, meet in emergency circumstances
Manipulation demand.
6, present invention design has clutch stroke final position travel limit switch, i.e. travel switch, when piston rod reaches set
Stroke when can automatically cut off cylinder action, so that driving belt is reached the rate of tension of setting, in addition, adjust driving belt rate of tension
It can be realized by adjusting the setting position of travel switch, adjusting is easy to operate, is easily achieved.
Detailed description of the invention
Below by clearly understandable mode, preferred embodiment is described with reference to the drawings, to above-mentioned characteristic, the skill of the application
Art feature, advantage and its implementation are further described.
Fig. 1 is a kind of typically showing applied to the transmission device clutch on grain combine in the prior art
Meaning schematic diagram；
In Fig. 1, the corresponding relationship of component names and appended drawing reference are as follows:
Control stick a, tooth plate b, link mechanism c.
Fig. 2 is the control flow chart of engine control system in the embodiment of the present invention；
Fig. 3 is the electrical principle schematic diagram of engine control system in the embodiment of the present invention；
Fig. 4 is the hydraulic principle schematic diagram of engine control system in the embodiment of the present invention；
Fig. 5 is the layout view of ignition switch in the embodiment of the present invention；
Fig. 6 is the wiring diagram of key door in the embodiment of the present invention；
In figs. 3 and 4, the corresponding relationship of component names and appended drawing reference are as follows:
Preheat shelves connecting line 1, solenoid valve 2, clutch oil cylinder 3, hydraulic lock 4, one-way throttle valve 5,
Travel switch 6, starter 7, generator 8, power supply unit 9, key door 10, negative bus 11,
Starting relay 12, fusible line 13, the first fuse 14, the second fuse 15, power switch 16, ECU control are single
Member 17, ignition switch 18, instrument board 19, interior auxiliary system 20,
The outer auxiliary system 21 of vehicle.
Specific embodiment
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, Detailed description of the invention will be compareed below
A specific embodiment of the invention.It should be evident that drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing, and obtain other embodiments.
To make simplified form, part related to the present invention is only schematically shown in each figure, their not generations
Its practical structures as product of table.
Fig. 2 is please referred to Fig. 6, wherein Fig. 2 is the control flow chart of engine control system in the embodiment of the present invention；Fig. 3
For the electrical principle schematic diagram of engine control system in the embodiment of the present invention；Fig. 4 is engine control system in the embodiment of the present invention
The hydraulic principle schematic diagram of system；Fig. 5 is the layout view of ignition switch in the embodiment of the present invention；Fig. 6 is key in the embodiment of the present invention
The wiring diagram of spoon door.
The invention discloses a kind of electrichydraulic control clutches, which includes tensioning wheel, with
Bearing up pulley be combined with for realizing power transmitting belt, by tensioning wheel to belt compress or unclamp realize power transmitting with
Cutting.
In the prior art, the control that tensioning wheel is realized by control stick coupler link mechanism, in this way for clutch
Control it is complicated for operation, cumbersome, it is also larger for the structural adjustment operation difficulty of link mechanism after belt aging.
For the ease of controlling tensioning wheel, the present invention provides a set of electrichydraulic control clutches.Specifically, the electricity
Hydraulic control clutch includes fluid power system, provides driving force to the movement of tensioning wheel by fluid power system, from
And control the combination of tensioning wheel and belt with separate.
In the present invention, fluid power system includes clutch oil cylinder 3 and connect with clutch oil cylinder 3 for switching clutch
The solenoid valve 2 of 3 working condition of oil cylinder.
Clutch oil cylinder 3 have rodless cavity and rod chamber, wherein rodless cavity, rod chamber are circumscribed with oil inlet pipe, by into
Oil pipe line is connected to and is formed into a loop with hydraulic oil container.
The tool of clutch oil cylinder 3 is respectively as follows: that 1, rodless cavity oiling, rod chamber are fuel-displaced, and piston rod is stretched there are three types of working condition
Out；2, rod chamber oiling, rodless cavity are fuel-displaced, and piston rod is withdrawn；3, rod chamber and rodless cavity oil circuit are closed, and piston rod is in quiet
Only state.
Solenoid valve 2 connect the oil circuit formed with clutch oil cylinder 3, and the flow direction for switching hydraulic oil in oil circuit by solenoid valve 2 is real
The transformation of existing 3 working condition of clutch oil cylinder.Under different working condition, the spool of solenoid valve 2 shifts to different location, can control
Flow into oil inlet pipe to pressure oil directionality in hydraulic oil container.The present invention also provides hydraulic selector, hydraulic selector settings
In the open state in solenoid valve 2 on the oil inlet pipe of clutch oil cylinder, hydraulic oil flows to clutch oil cylinder 3 by hydraulic selector
Rodless cavity or rod chamber in.
Piston rod is connect by link transmission system with tensioning wheel, and clutch oil cylinder 3 is controlled by solenoid valve 2, with electromagnetism
2 signal of valve is connected with the control device that can be controlled it, which is preferably push-button switch.Control device peace
In driving cab of harvester, button press can be switched over by working condition of the solenoid valve to clutch oil cylinder, be compared
For traditional rod-pulling type clutch, operation of the present invention is simple, easy to use, can save the occupancy sky for driving indoor location
Between.
In the present invention, electrichydraulic control clutch is provided with fluid power system, by fluid power system to tensioning
Wheel is controlled, to realize the transmitting and cutting of power, the system composition of fluid power system is small in size, is installed convenient for system
And structural adjustment.It can be by the relatively simple button type switch device of structure come real for the control of fluid power system
It is existing, it can be realized the purpose of simplified clutch operation, but also can reduce controlling equipment and driving accounting for for indoor location
Use space.
Based on said structure design, the present invention is provided with the preheating shelves connecting line 1 connecting with solenoid valve 2 again, passes through
It preheats shelves connecting line 1 and obtains the signal before engine start, and electromagnetism is utilized by preheating shelves connecting line 1 before an engine is started
Valve 2 unloads clutch oil cylinder 3.
Generally, before an engine is started, the electric power thus supplied for the electrical equipment installed on harvester will appear multiple switching,
For example, power supply for electrical equipment corresponding with the mode, is switched to next mode on harvester when harvester is in dedicated mode
I.e. ignition mode when, electrical equipment corresponding with ignition mode just starts to power on harvester.
It should be understood that it is single that electrical equipment or electricity system on harvester generally comprise ECU control in the present invention
The outer auxiliary system of member 17, instrument board 19, interior auxiliary system 20 (such as radio, room light lamp etc.), vehicle 21 (such as loudspeaker
, rain brush, headlight, turn signal etc.), it, can be to specific electrical equipment by key door when key door is in different gears
Either electricity system carries out circuit conducting or circuitry cuts.
In the present invention, according to mode setting sequence, before an engine is started, the present invention be provided with altogether latching, it is dedicated,
Igniting preheats four modes, and preheating shelves connecting line 1 set by the present invention can then obtain any one in aforementioned four mode
The energized state of mode carries out clutch oil cylinder 3 by solenoid valve 2 to issue signal to solenoid valve 2 before an engine is started
Unloading.
Being provided with can be available by preheating shelves connecting line 1 to the preheating shelves connecting line 1 that solenoid valve 2 is controlled
Signal before engine start, to be unloaded before an engine is started by solenoid valve 2 to clutch oil cylinder 3.The present invention couple
The structure optimization of fluid power system is provided with the ceding of Taiwan, the automatic offloading functions of shelling clutch, is obtained by preheating shelves connecting line 1
Signal before engine start, it is automatic before an engine is started to detect, unload and cut off automatically engine and ceding of Taiwan transmission, shelling
The power of transmission prevents engine band to carry starting, protects the function of engine so that the present invention is provided with.
Operational mode for harvester is to realize to convert by key door 10, and specifically, key door 10 is by its torsion
Boot sequence includes to lock shelves, dedicated shelves, point fire screen, preheating shelves and starting shelves.Engine is opened by the realization of starting shelves
Dynamic, being connected with preheating shelves connecting line 1 with the preheating shelves of key door 10, (the preheating shelves terminals of hot shelves connecting line 1 and key door connect
Connect), when key door 10 is in preheating shelves, other than realizing the power supply of electrical equipment corresponding to this, connected by preheating shelves
A circuit is drawn in wiring 1, which connect with solenoid valve 2, can be controlled solenoid valve 2 to realize that clutch oil cylinder moves
Make.The present invention realizes the linkage control of fluid power system by preheating shelves connecting line 1.
In the present invention, the specific composition of fluid power system is as follows: include hydraulic oil container, oil pump, solenoid valve 2 and
Clutch oil cylinder 3, hydraulic oil container include being increased there are two hydraulic oil oil inlet and fuel-displaced fuel tank interface is respectively used to by oil pump
Hydraulic oil it is hydraulic, in this way, hydraulic oil being capable of fuel-displaced, another oil return from one in two fuel tank interfaces.
Specifically, solenoid valve 2 is three position four-way electromagnetic valve, and solenoid valve 2 includes left position oil circuit and right position oil circuit.Spool
There are three states, respectively left position, middle position and right position for tool, and spool is under the action of magnet coil to left position or right displacement
Dynamic, when magnet coil power-off, valve core reset is to middle position, and at middle position, left position oil circuit and right position oil circuit are in and cut spool
Disconnected state.
Clutch oil cylinder 3 includes rodless cavity interface and rod chamber interface, and one in two fuel tank interfaces is oily with left position
Road connection, left position oil circuit are connect with rodless cavity interface, another and right position oil circuit connection, right position oil circuit in two fuel tank interfaces
It is connect with rod chamber interface.Hydraulic oil can be realized in two above-mentioned oil circuits send oil and oil return.
The present invention is provided with clutch oil cylinder 3, and the piston rod of clutch oil cylinder 3 is connect with tensioning wheel and is driven by piston rod
Dynamic tensioning wheel is compressed or is unclamped to belt.In order to guarantee the stability of tensioning wheel state, the present invention is in fluid power system
Be also provided with hydraulic lock 4, the tool of hydraulic lock 4 there are two setting up separately having bar oil inlet branch and without the check valve on bar oil inlet branch road,
The self-locking of fluid power system is realized by hydraulic lock 4.It is provided with hydraulic lock in fluid power system, the present invention can be made
Have the function of electrical interlocks, to improve the stability of tensioning wheel state holding, and then reaches and improve operational reliability of the present invention
Purpose.
Above-mentioned specifically refers in the present invention without bar oil inlet branch, and the oil of clutch oil cylinder rodless cavity is connected to by hydraulic oil container
Road has bar oil inlet branch to specifically refer in the present invention, the oil circuit of clutch cylinder rod chamber is connected to by hydraulic oil container.
The present invention is additionally provided with one-way throttle valve 5, and one-way throttle valve 5 is arranged on no bar oil inlet branch road；When hydraulic oil stream
When to rodless cavity, the throttle orifice of one-way throttle valve 5 is in effective status, so that the piston rod of clutch oil cylinder slowly stretches out；Work as liquid
When pressure oil flows to rod chamber, the throttle orifice of one-way throttle valve 5 is in failure state, and the piston rod of clutch oil cylinder is quickly retracted.It is single
To throttle valve 5 for realizing rodless cavity from hydraulic oil to clutch oil cylinder 3 slow oiling and quick emptying, may be implemented in this way
Tensioning wheel avoids transmitter by excessive impact force the slow compression of belt so that clutch slowly combines.Meanwhile
It can also realize quick emptying, make tensioning wheel Rapid reset in a short time in this way, realize the quick cutting of power output.This
Invention is provided with one-way throttle valve 5 in fluid power system, and due to being provided with one-way throttle valve 5, clutch action may be implemented
The slow combination and quick separating, the slow combination of clutch action of process can suddenly increase to avoid engine loading, with reality
Now protect the purpose of engine and driving belt, the quick separating of clutch action, can quickly cut off engine to the ceding of Taiwan, take off
The transmitting of paddy power, meets manipulation demand in emergency circumstances.
It is connected with the hydraulic selector for being controlled its on state with solenoid valve 2, hydraulic selector is opened for button
Hydraulic selector is closed, the working condition of solenoid valve 2 can be manually controlled by hydraulic selector.The present invention is opened using button
Manipulation is closed, manipulation is comfortably convenient, structure is simple, is easy to steerable system location arrangements.
Preheating shelves connecting line 1 is used to be electrically connected with the magnet coil that left position oil circuit is connected is realized with solenoid valve 2, and passes through
Preheating shelves connecting line 1 realizes the quick emptying of clutch oil cylinder 3 before an engine is started.
In order to improve control precision of the invention, in the present embodiment, the present invention also provides travel switches 6, and stroke is opened
6 are closed for detecting the position of piston rod, when piston rod touches travel switch 6, the spool of solenoid valve power-off, solenoid valve is multiple
Position, cut-out pressure oil stream is to clutch oil cylinder.
Travel switch 6 is fixedly installed relative to harvester, also, the setting position of travel switch 6 is adjustable.According to tensioning wheel
The compression of belt is required travel switch 6 to be fixed installation, travel switch 6 and the control of solenoid valve 2 connect, by clutch oil cylinder
3 driving tensioning wheels compress belt, and triggering travel switch 6 starts after tensioning wheel extend out to setting position, are issued and are controlled by travel switch 6
Signal cut solenoid valve 2 processed is powered, and solenoid valve 2 resets cutting left position oil circuit and right position oil circuit and realizes oil by hydraulic lock 4
Road is self-locking, and tensioning wheel is fixed.
The invention also discloses a kind of engine control systems, include starter 7, engine, generator 8, power supply list
Member 9, clutch, switch control unit 17, key door 10 etc..
The present invention for engine control system core improve design it is as follows: power supply unit 9, switch control unit 17,
Engine, solenoid valve 2, key door 10 are connected and are formed into a loop；The electric power thus supplied of the control power supply unit 9 of switch control unit 17；
When power supply unit 9 is powered, key door 10 controls engine in pre- Warm status, changes the spool position of solenoid valve 2, keeps clutch oily
The rodless cavity of cylinder is connected to hydraulic oil container, and the piston rod of clutch oil cylinder is retracted, make tensioning wheel leave engine and executing agency it
Between belt.
Engine is generally diesel engine, and for realizing the starting of engine, generator 8 can will start starter 7
A part of kinetic energy of machine is converted into electric energy and supplies other electrical equipments.
Clutch used in engine control system provided by the invention is such as above-mentioned electrichydraulic control clutch
Structure.
Key door 10 includes to lock shelves, dedicated shelves, point fire screen, preheating shelves and starting shelves, the preheating with key door 10
Shelves are connected with preheating shelves connecting line 1, and fluid power system includes hydraulic oil container, solenoid valve 2 and clutch oil cylinder 3.
In the present invention, key door includes: starting shelves terminals, and starting shelves terminals pass through in switch control unit 17
The coil of starting relay is connected to power supply unit；One end of the contact of starting relay is connected in switch control unit 17
Starter, starter are connected to power supply unit；The other end of the contact of starting relay is connected to power supply unit.Specifically, key
Spoon door includes: preheating shelves terminals, and preheating shelves terminals connect solenoid valve, and solenoid valve is also attached to power supply unit；Point fire screen connects
Line end, point fire screen terminals are connected to the relay of switch control unit 17, and point fire screen terminals are also attached to control unit 17
Ignition switch 18, relay is connected to power supply unit；Shelves terminals are lockked, shelves terminals is lockked and passes through fuse, fusible line
It is connected to power supply unit.
Key door 10 using matrix form controling circuit structure design, the X axis of matrix form control circuit be provided with the port B1,
The port B2, the port B3, the port B4, the port B5, the Y-axis of matrix form control circuit be set as lock shelves, dedicated shelves, point fire screen,
Shelves and starting shelves are preheated, corresponds to and locks shelves, the conducting of B1 port circuit, correspond to dedicated shelves, the port B1 and the port B2 electricity
Road conducting corresponds to point fire screen, the port B1, the port B2 and the conducting of B3 port circuit, corresponds to preheating shelves, the port B1, the end B3
Mouth and the conducting of B4 port circuit correspond to starting shelves, the port B1, the port B3, the port B4 and the conducting of B5 port circuit.This hair
The bright stretching using piston rod, withdraw actuation realize clutch from, close, and can be real by the structure design to key door
Existing sequence of movement control logic, the in this way installation convenient for preheating shelves connecting line 1.
Based on above-mentioned key gate structure, electric wiring connection structure of the invention is as follows: the cathode of power supply unit 9
It is connected with negative bus 11, the anode of power supply unit 9 connect with the port B1 of key door 10, connect with the port B4 of key door 10
It is connect after thering is preheating shelves connecting line 1, preheating shelves connecting line 1 to connect with solenoid valve 2 with negative bus 11, the starting with key door 10
The port B5 of shelves is connected with starting relay 12, and starting relay 12 is connect with starter 7, and starter 7 and power supply unit 9 are just
Pole and negative bus 11 connect, and generator 8 is connect with power supply unit 9.
Specifically, fusible line 13 is provided between generator 8 and the anode of power supply unit 9.
Specifically, the first fuse 14 is provided between generator 8 and the anode of power supply unit 9；In power supply unit 9
The second fuse 15 is provided between anode and key door 10.
Specifically, power switch 16 is provided between the cathode of power supply unit 9 and negative bus 11.
By above three structure optimization, electric wiring reliability of operation in the present invention can be improved.
Engine control system provided by the invention, the control flow on harvester are as follows:
It is powered by power supply unit 9 by key door 10, key door 10 has multiple and different gears, is respectively as follows:
Lock shelves, dedicated shelves, point fire screen, preheating shelves and starting shelves.It, can be mechanical, electrical to starting according to the different gear of key door 10
The equipment such as magnet valve 2 are powered, also, preheating shelves connecting line 1 is connected on the port B4 of key door 10, are connected by preheating shelves
Line 1 is powered to a magnet coil of solenoid valve 2, an oil circuit of solenoid valve 2 can be connected in this way, to realize clutch oil cylinder
3 carry out emptying before an engine is started.
For solenoid valve 2, the present invention is provided there are three types of different control programs, one of them is controlled for above-mentioned key door 10
System, another is exactly to pass through control device (to be mounted in driver's cabin, manually controlled by the realization of machine hand) control, the last one is exactly
It is realized and is controlled by travel switch 6.
In the present invention, the working principle of electric-control system and fluid power system difference is as follows:
The working principle of electric-control system are as follows: before engine start, when key is screwed onto preheating from key door 10 by machine hand and is opened
During dynamic, when key is in preheating gear, start not yet to start at this time, starting motor is in pre- Warm status, leads at this time
The electric current of starter motor is flowed to simultaneously on the magnet coil of solenoid valve 2, the magnet coil of solenoid valve 2 obtain it is electric make spool displacement, thus
So that left position oil circuit is connected, 3 rodless cavity of clutch oil cylinder is connected to hydraulic oil container at this time, makes oil cylinder rodless cavity (pressure chamber) off-load,
Tensioning wheel resets, and realizes the off-load of clutch oil cylinder 3 before an engine is started.After the completion of above-mentioned movement, key can be by key
Door 10 is switched to starting shelves, as long as starting engine at this time and no matter whether clutch is tensioned, solenoid valve 2 can all be powered automatically
The safe action for forcing off-load is executed, clutch is made to be in the state of "Off".By above-mentioned improvement, the present invention has engine
Load before starting detects automatically, self-discharging function, which can protect engine, and engine band is avoided to carry starting.
The working principle of fluid power system are as follows: when 2 left position magnet coil of solenoid valve obtains electric, the spool of solenoid valve 2 is moved
Dynamic, the conducting of left position oil circuit, high-pressure and hydraulic oil stream is to the rodless cavity of clutch oil cylinder 3, and in the hydraulic oil process of circulation, hydraulic oil is pushed open
The check valve of 4 two sides of hydraulic lock makes the rodless cavity oil inlet of clutch oil cylinder 3, meanwhile, the rod chamber oil return of clutch oil cylinder 3 is to hydraulic
In fuel tank, the piston rod of clutch oil cylinder 3 runs stretching to the right at this time, so that tensioning wheel is pressed to belt (belt tension), to make
Engine power is transferred to executing agency (header transmission system or shelling transmission system) by belt, and executing agency is made to work.
When the right position magnet coil of solenoid valve 2 obtains electric, the spool of solenoid valve 2 is mobile, and right position oil circuit conducting, solenoid valve 2 switches hydraulic
The circulating direction of oil, high-pressure and hydraulic oil stream to the rod chamber of clutch oil cylinder 3, push the check valve of 4 two sides of hydraulic lock open, make by hydraulic oil
The rod chamber oil inlet of clutch oil cylinder 3, meanwhile, rodless cavity oil return to hydraulic oil container, at this point, 3 piston rod of clutch oil cylinder is transported to the left
Row is withdrawn, and is driven tensioning wheel to leave belt, is made belt slack, to cut off engine power, executing agency is made to stop working.
By the design optimization to fluid pressure line, one-way throttle valve 5 is provided with before the rodless cavity of clutch oil cylinder 3 makes oil cylinder
Can be achieved: hydraulic oil slows down piston rod movement by restriction when piston rod is run to the right, realizes that tension pulley is slow
In conjunction with belt；Hydraulic oil makes throttle orifice fail by check valve when stopper rod is run to the left, and piston rod movement speed is formed
Differential (piston rod retracts quicker than stretching out).Be provided with one-way throttle valve 5, can be realized tensioning wheel slowly in conjunction with belt,
Rapidly separated with belt.
In addition, the present invention is additionally provided with travel switch 6, when touching travel switch 6 when cylinder piston rod stretches out, make electricity
The magnet coil of magnet valve 2 powers off, and solenoid valve 2 is repositioned to middle position, and cutting hydraulic oil realizes that the positioning of oil cylinder stops.
First power switch 16 is closed, 9 current direction of power supply unit before starting engine based on said structure design
10 port B1 of key door, when driver by key from OFF- it is dedicated-igniting-preheating-starting each gear conversion during, electricity
Source passes through successively OFF (B1)-dedicated (B1-B2)-igniting (the B1-B2-B3)-preheating (B1-B3-B4)-of 10 internal circuit of key door
Start (B1-B3-B4-B5) to connect, wherein the port B4 is external on solenoid valve 2 by preheating shelves connecting line 1, obtains solenoid valve 2
The technical requirements of the off-load before an engine is started of solenoid valve 2 may be implemented earlier than engine start in electricity.Key door 10 is in key
Spoon is screwed onto when being preheated to starting from igniting, and movement, which executes, to be completed key and can spring back back gear of lighting a fire.The port B1-B4 is to disconnect at this time
State, 2 no power of solenoid valve.This process meets solenoid valve 2 and is in the job requirement to be operated of middle position after the engine started, when
It can be controlled by 2 control switch of solenoid valve when needing to combine or disconnect clutch.When key is screwed to fire screen, electric current flows through power supply
Unit 9- fusible line 13- the first fuse 14- key door 10, the conducting of the port B1-B2-B3, whole for harvester on key door 10
For machine, instrument board 19, fan, wiper, car light are in energized state, can pass through the above-mentioned electricity piece of switch control at this time.
When key, which is screwed to preheating shelves, to be set, electric current flows through power supply unit 9- fusible line 13- the first fuse 14- key door 10, key door
The port B1-B3-B4 is connected on 10, and the preheating shelves connecting line 1 being arranged on the port B4 is powered, so that one on solenoid valve 2
Magnet coil obtain it is electric, solenoid valve 2 be powered after, solenoid valve 2 replace so that hydraulic oil flows to the rod chamber of clutch oil cylinder 3, piston rod
It bounces back and tensioning wheel load is driven to leave belt, make belt slack, to cut off engine power, executing agency is made to stop working.
When key is screwed to starting shelves, electric current realizes the conducting of the port B1-B3-B4-B5 by key door 10, thus starting relay 12
Be powered closure, and engine start is realized in starter motor starting.After engine start, generator 8 is driven to generate electricity, at this time generator 8
Power generation is that full vehicle is powered, while power supply unit 9 being made to charge；The charhing unit includes battery.
It should be noted that above-described embodiment can be freely combined as needed.The above is only preferred implementations of the invention
Mode, it is noted that for those skilled in the art, without departing from the principle of the present invention, also
Several improvements and modifications can be made, these modifications and embellishments should also be considered as the scope of protection of the present invention.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811609674.6A CN109488700B (en) | 2018-12-27 | 2018-12-27 | Electro-hydraulic clutch mechanism and engine control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811609674.6A CN109488700B (en) | 2018-12-27 | 2018-12-27 | Electro-hydraulic clutch mechanism and engine control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109488700A true CN109488700A (en) | 2019-03-19 |
| CN109488700B CN109488700B (en) | 2025-03-21 |
Family
ID=65712592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811609674.6A Active CN109488700B (en) | 2018-12-27 | 2018-12-27 | Electro-hydraulic clutch mechanism and engine control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109488700B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113752639A (en) * | 2021-09-06 | 2021-12-07 | 福建新龙科技有限公司 | Moisture-absorbing antibacterial warp-knitted three-layer net and production process |
| CN113906899A (en) * | 2020-07-09 | 2022-01-11 | 道依茨法尔机械有限公司 | Hydraulic main clutch mechanism of corn harvester |
| CN114352656A (en) * | 2021-11-23 | 2022-04-15 | 杭州宝协机电科技有限公司 | Separable coupling system for oil pump |
| CN115182941A (en) * | 2022-07-29 | 2022-10-14 | 中国煤炭科工集团太原研究院有限公司 | Self-adjusting power cut-off control device and system for explosion-proof vehicle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201560445U (en) * | 2009-04-22 | 2010-08-25 | 陈新盛 | Digging ploughing device |
| CN102602285A (en) * | 2012-04-05 | 2012-07-25 | 三一汽车起重机械有限公司 | Engineering machine and starting method for engine thereof |
| CN103758892A (en) * | 2014-01-02 | 2014-04-30 | 洛阳理工学院 | A control system for controlling the clutch of agricultural machinery working device |
| CN105513488A (en) * | 2016-02-29 | 2016-04-20 | 常州机电职业技术学院 | Experimental teaching instrument equipment for electrical system of excavator |
| CN209370318U (en) * | 2018-12-27 | 2019-09-10 | 常州常发农业装备工程技术研究有限公司 | Electro-hydraulic control clutch mechanism and engine control system |
-
2018
- 2018-12-27 CN CN201811609674.6A patent/CN109488700B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201560445U (en) * | 2009-04-22 | 2010-08-25 | 陈新盛 | Digging ploughing device |
| CN102602285A (en) * | 2012-04-05 | 2012-07-25 | 三一汽车起重机械有限公司 | Engineering machine and starting method for engine thereof |
| CN103758892A (en) * | 2014-01-02 | 2014-04-30 | 洛阳理工学院 | A control system for controlling the clutch of agricultural machinery working device |
| CN105513488A (en) * | 2016-02-29 | 2016-04-20 | 常州机电职业技术学院 | Experimental teaching instrument equipment for electrical system of excavator |
| CN209370318U (en) * | 2018-12-27 | 2019-09-10 | 常州常发农业装备工程技术研究有限公司 | Electro-hydraulic control clutch mechanism and engine control system |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113906899A (en) * | 2020-07-09 | 2022-01-11 | 道依茨法尔机械有限公司 | Hydraulic main clutch mechanism of corn harvester |
| CN113752639A (en) * | 2021-09-06 | 2021-12-07 | 福建新龙科技有限公司 | Moisture-absorbing antibacterial warp-knitted three-layer net and production process |
| CN113752639B (en) * | 2021-09-06 | 2024-04-19 | 福建新龙科技有限公司 | Winding machine of warp knitting three-layer net with moisture absorption and bacteria resistance |
| CN114352656A (en) * | 2021-11-23 | 2022-04-15 | 杭州宝协机电科技有限公司 | Separable coupling system for oil pump |
| CN114352656B (en) * | 2021-11-23 | 2023-09-01 | 杭州宝协机电科技有限公司 | Detachable coupling system for oil pump |
| CN115182941A (en) * | 2022-07-29 | 2022-10-14 | 中国煤炭科工集团太原研究院有限公司 | Self-adjusting power cut-off control device and system for explosion-proof vehicle |
| CN115182941B (en) * | 2022-07-29 | 2024-05-17 | 中国煤炭科工集团太原研究院有限公司 | Self-adjusting power cut-off control device and system for explosion-proof vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109488700B (en) | 2025-03-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109488700A (en) | Electrichydraulic control clutch and engine control system | |
| EP2310239B1 (en) | Brake assembly for a vehicle | |
| CA2591261C (en) | System for operating a hydraulically actuated device | |
| CN106740767B (en) | Parking Brake System for Dump Trucks | |
| CN106882173B (en) | The braking method of the parking brake system of dumper | |
| US20110067962A1 (en) | Vehicle hydraulic control device | |
| CN110701299B (en) | AMT solenoid valve driving device | |
| JP2016511718A (en) | Electronically controlled air brake system for a vehicle, a vehicle comprising such a system and a method for controlling such a system | |
| CN106089453A (en) | The exhaust brake flameout system of vehicle | |
| CN103307137B (en) | A kind of AMT Manual clutchs emergency maneuvering device | |
| CN209370318U (en) | Electro-hydraulic control clutch mechanism and engine control system | |
| CN106704413B (en) | A kind of cropper main clutch electric-controlled hydraulic operating mechanism | |
| CN104314901A (en) | Valve device, flow priority control circuit and vehicle | |
| US9709046B2 (en) | Hydrostatic power unit as hydraulic starter of an internal combustion engine | |
| CN106678203A (en) | Intelligent auxiliary system for clutch of manual car | |
| US4579209A (en) | Clutch and throttle system for remote control of engine speed | |
| CN104442378A (en) | Clutch assembly for a motor vehicle | |
| US20140314587A1 (en) | Check Valve Device In The Suction Side of A Hydrostatic Power-Unit That Can Be Operated In The Same Direction of Rotation As A Pump And As A Motor | |
| DE102016214984A1 (en) | Engine start control device and engine start control method | |
| DE102005010960B4 (en) | Level control device for a motor vehicle | |
| CN219159506U (en) | Booster gearshift and vehicle | |
| US6357311B1 (en) | Electrical transmission range shift system with non-continuous duty solenoid valve | |
| CN104565247A (en) | Hydraulic driving belt tension pulley controller for tractors | |
| JP3887932B2 (en) | Booster circuit for tractor hydraulic clutch | |
| CN117489780B (en) | Gear shifting transmission device, gear shifting control method and hybrid power vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 539 Xiacheng South Road, Wujin national high tech Industrial Development Zone, Changzhou City, Jiangsu Province Applicant after: CHANGZHOU CHANGFA AGRICULTURE EQUIPMENT ENGINEERING TECHNOLOGY RESEARCH Co.,Ltd. Applicant after: JIANGSU CHANGFA AGRICULTURAL EQUIPMENT Co.,Ltd. Address before: 213000 Changfa Industrial Park, Wujin Avenue, Changzhou City, Jiangsu Province Applicant before: CHANGZHOU CHANGFA AGRICULTURE EQUIPMENT ENGINEERING TECHNOLOGY RESEARCH Co.,Ltd. Applicant before: JIANGSU CHANGFA AGRICULTURAL EQUIPMENT Co.,Ltd. |
|
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Country or region after: China Address after: No. 539 Xiacheng South Road, Wujin National High tech Industrial Development Zone, Changzhou City, Jiangsu Province, China 213167 Applicant after: Changzhou Changfa Technology Development Co.,Ltd. Applicant after: JIANGSU CHANGFA AGRICULTURAL EQUIPMENT Co.,Ltd. Address before: No. 539 Xiacheng South Road, Wujin High tech Industrial Development Zone, Changzhou City, Jiangsu Province Applicant before: CHANGZHOU CHANGFA AGRICULTURE EQUIPMENT ENGINEERING TECHNOLOGY RESEARCH CO.,LTD. Country or region before: China Applicant before: JIANGSU CHANGFA AGRICULTURAL EQUIPMENT Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |