CN107489667A - Caterpillar band type field working car fluid power system - Google Patents
Caterpillar band type field working car fluid power system Download PDFInfo
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- CN107489667A CN107489667A CN201610975286.4A CN201610975286A CN107489667A CN 107489667 A CN107489667 A CN 107489667A CN 201610975286 A CN201610975286 A CN 201610975286A CN 107489667 A CN107489667 A CN 107489667A
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- work tool
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
- B60K17/10—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of fluid gearing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K25/00—Auxiliary drives
- B60K25/06—Auxiliary drives from the transmission power take-off
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/0401—Valve members; Fluid interconnections therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K25/00—Auxiliary drives
- B60K25/06—Auxiliary drives from the transmission power take-off
- B60K2025/065—Auxiliary drives from the transmission power take-off the transmission being fluidic, e.g. hydraulic
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/0401—Valve members; Fluid interconnections therefor
- F15B2013/041—Valve members; Fluid interconnections therefor with two positions
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a kind of caterpillar band type field working car fluid power system, including bottom to be provided with the vehicle frame of crawler type walking mechanism；The the first walking fluid motor-driven unit and the second hydraulic motor travel motor driver element, work tool hydraulic motor M1, the work tool lifting hydraulic cylinder driven by hydraulic pump D of the hydraulic pump D driven by engine by gearbox, hydraulic oil container, the driving crawler type walking mechanism are provided with vehicle frame；First and second hydraulic motor travel motor driver element, work tool hydraulic motor M1, work tool lifting hydraulic cylinder and hydraulic pump D, hydraulic oil container form fluid power system.The invention has the advantages that simple and compact for structure, easy to operate, field percent of pass is high, versatile.Operation Van's walking, steering and farm work are driven by hydraulic power drive mechanism, substantially increase the flexibility for turning to precision and the selection of farm work equipment of Operation Van.
Description
Technical field
The present invention relates to caterpillar band type field working car, more particularly, to caterpillar band type field working car fluid power system.
Background technology
During field management, it is often necessary to which the operation such as sprayed using machinery, applied fertilizer, transplanted.Existing field management machinery
Including low ground space field management machinery, high-clearance field management machinery and aviation plant protection machinery three major types.Existing high-clearance field
Management machinery includes wheeled high-clearance field operating vehicle and crawler type high-clearance field operating vehicle.Wheeled high-clearance field operating vehicle
Turning radius is big, bearing capacity is weak, reduces flexibility during farm work walking, limits Operation Van's supporting operation equipment
Application Range and operating efficiency；And because high-clearance Operation Van center of gravity is higher, and the wheel of wheeled high-clearance field operating vehicle
Contact area is small, therefore stability is excessively poor, and security is low.Though existing crawler type high-clearance field operating vehicle can increase ground plane
Product, improves its stability and security, but the Operation Van uses machine driving more, causes turning radius larger, and flexibility is low, and
Hanging device height can not adjust, poor universality, and often an Operation Van can only match a kind of work tool according to job requirements.
The content of the invention
Present invention aims at provide a kind of caterpillar band type field working car fluid power system.
To achieve the above object, the present invention can take following technical proposals：
Caterpillar band type field working car fluid power system of the present invention, including bottom are provided with the car of crawler type walking mechanism
Frame；The hydraulic pump D driven by engine by gearbox, hydraulic oil container, the driving crawler type row are provided with the vehicle frame
Walk the first walking fluid motor-driven unit and the second hydraulic motor travel motor driver element, work tool hydraulic motor of mechanism
M1, the work tool lifting hydraulic cylinder driven by the hydraulic pump D；The first and second hydraulic motor travel motor driver element, operation
Equipment hydraulic motor M1, work tool lifting hydraulic cylinder and hydraulic pump D, hydraulic oil container form fluid power system；The hydraulic pressure
Pump D liquid outlets are communicated with three road hydraulic pressure output channels；The first via hydraulic pressure output channel enters with closed type electromagnetic relief valve F1
Liquid mouth is connected, and the second road hydraulic pressure output channel is connected with M type three position four-way electromagnetic valve F2 interposition valve ports, and described
Three road hydraulic pressure output channels respectively with the described first walking fluid motor-driven unit and the second hydraulic motor travel motor driver element
It is connected；The liquid outlet of the closed type electromagnetic relief valve F1 is connected by pipeline with hydraulic oil container；The M types 3-position 4-way
Magnetic valve F2 interpositions valve port while the left position feed liquor valve port with unit normal open type two-position four-way solenoid valve F3 and right position liquid feed valve
Mouth is connected, and the left position liquid valve mouth of the unit normal open type two-position four-way solenoid valve F3 is connected by pipeline with hydraulic oil container
Logical, unit normal open type two-position four-way solenoid valve F3 right position liquid valve mouth is connected with adjustable flow distributing and collecting valve F4 feed liquor valve ports
Logical, hydraulic oil is divided into two-way output by the adjustable flow distributing and collecting valve F4 according to set flow, and first via output passes through left position
Liquid valve mouth is connected through snap joint with work tool hydraulic motor M1 inlets, and the output of the second tunnel passes through open type all the way
Two-position two-way solenoid valve F5 bottoms valve port, counterbalance valve F6 are connected with hydraulic oil container, and the another way of the second tunnel output passes through
Three position four-way electromagnetic valve F7 work valve port connects with the rodless cavity of the work tool lifting hydraulic cylinder, work tool lifting liquid
The rod chamber of cylinder pressure is connected by the liquid valve port that returns of the three position four-way electromagnetic valve F7 with hydraulic oil container；Three position four-way electromagnetic valve
The left position liquid valve mouths of F2 are connected with fixed equivalent flow divider-combiner F8 inlet；The first walking fluid motor-driven
Unit and the second hydraulic motor travel motor structure of driving unit are identical；First walking fluid motor-driven unit includes hydraulic motor
M2, electromagnetic throttle valve F9 and two-position four-way solenoid valve F10 are formed；The liquid outlet of the fixed equivalent flow divider-combiner F8 is through institute
The upper valve port for stating two-position four-way solenoid valve F10 enters the actuator port of the hydraulic motor M2, hydraulic motor M2 oil return opening
The next valve port through two-position four-way solenoid valve F10 is connected with three position four-way electromagnetic valve F2 right position valve port；Hydraulic motor M2's
Actuator port and oil return opening are respectively connected by discharge opeing check valve F11, a F12 and the electromagnetic throttle valve F9 with hydraulic oil container
Logical, two described discharge opeing check valve F11, F12 leakage fluid dram pass through pipeline and check-valves F13 and the hydraulic pump D liquid outlet phases
Connection.
The invention has the advantages that simple and compact for structure, easy to operate, field percent of pass is high, versatile.Pass through fluid pressure type
Power-driven mechanism drives Operation Van's walking, turned to and farm work, substantially increases steering precision and the field of Operation Van
Between work tool select flexibility.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the schematic diagram of the fluid power system.
Embodiment
As shown in Figure 1, 2, caterpillar band type field working car fluid power system of the present invention, including bottom are provided with crawler belt
The vehicle frame 2 of formula walking mechanism 1；Be provided with vehicle frame 2 the hydraulic pump D driven by engine 3 by gearbox 4, hydraulic oil container 8,
Drive the first walking fluid motor-driven unit 5 and the second hydraulic motor travel motor driver element of the crawler type walking mechanism 1
6th, work tool hydraulic motor M1, the work tool lifting hydraulic cylinder 7 driven by hydraulic pump D；First and second hydraulic motor travel motor drives
Moving cell 5,6, work tool hydraulic motor M1, work tool lifting hydraulic cylinder 7 and hydraulic pump D, hydraulic oil container 8 form hydraulic pressure and driven
Dynamic system；
Hydraulic pump D liquid outlets are communicated with three road hydraulic pressure output channels；First via hydraulic pressure output channel and closed type electromagnetic relief valve
F1 inlets are connected, and the second road hydraulic pressure output channel is connected with M type three position four-way electromagnetic valve F2 interposition valve ports, the 3rd tunnel
Hydraulic pressure output channel is connected with the first walking fluid motor-driven unit 5 and the second hydraulic motor travel motor driver element 6 respectively；
Closed type electromagnetic relief valve F1 liquid outlet is connected by pipeline with hydraulic oil container 8；M type three position four-way electromagnetic valve F2 interpositions
Valve port is connected with unit normal open type two-position four-way solenoid valve F3 left position feed liquor valve port and right position feed liquor valve port simultaneously, and unit is normal
Flow-through two-position four-way solenoid valve F3 left position liquid valve mouth is connected by pipeline with hydraulic oil container 8, two four, unit normal open type
Three-way electromagnetic valve F3 right position liquid valve mouth is connected with adjustable flow distributing and collecting valve F4 feed liquor valve ports, adjustable flow distributing and collecting valve F4
Hydraulic oil is divided into two-way output according to set flow, first via output passes through the left position liquid valve mouths of adjustable flow distributing and collecting valve F4
It is connected through snap joint 9 with work tool hydraulic motor M1 inlets, the one of the output of the tunnels of adjustable flow distributing and collecting valve F4 second
Road is connected by open type two-position two-way solenoid valve F5 bottoms valve port, counterbalance valve F6 with hydraulic oil container 8, and the second tunnel exports another
Connected all the way by O-shaped three position four-way electromagnetic valve F7 work valve port with the rodless cavity of work tool lifting hydraulic cylinder 7, working rig
The rod chamber for having lifting hydraulic cylinder 7 is connected by the O-shaped three position four-way electromagnetic valve F7 liquid valve port that returns with hydraulic oil container 8；M types three
The left position liquid valve mouths of position four-way solenoid valve F2 are connected with fixed equivalent flow divider-combiner F8 inlet；First walking hydraulic pressure
Motor drive unit 5 is identical with the structure of the second hydraulic motor travel motor driver element 6.
First walking fluid motor-driven unit 5 includes hydraulic motor travel motor M2, two four, electromagnetic throttle valve F9 and 2B3 type
Three-way electromagnetic valve F10 is formed；Fixed equivalent flow divider-combiner F8 liquid outlet is upper through 2B3 type two-position four-way solenoid valves F10's
Valve port enters hydraulic motor travel motor M2 actuator port, and hydraulic motor travel motor M2 oil return opening is through 2B3 type two-position four-way solenoid valves
F10 the next valve port returns liquid valve port with M type three position four-way electromagnetic valves F2 right position and is connected；Hydraulic motor travel motor M2 working oil
Mouth and oil return opening are respectively connected by discharge opeing check valve F11, a F12 and electromagnetic throttle valve F9 with hydraulic oil container 8, two rows
Liquid check valve F11, F12 leakage fluid dram are connected by pipeline and check-valves F13 with hydraulic pump D liquid outlets.
Second hydraulic motor travel motor driver element 6 includes hydraulic motor travel motor M2.1, electromagnetic throttle valve F9.1 and 2B3 type two
Position four-way solenoid valve F10.1 is formed；Fixed equivalent flow divider-combiner F8.1 liquid outlet is through 2B3 type two-position four-way solenoid valves
F10.1 upper valve port enters hydraulic motor travel motor M2.1 actuator port, and hydraulic motor travel motor M2.1 oil return opening is through 2B3 types
Two-position four-way solenoid valve F10.1 the next valve port is connected with M type three position four-way electromagnetic valves F2.1 right position valve port；Walking hydraulic pressure
Motor M2.1 actuator port and oil return opening respectively by discharge opeing check valve F11.1, F12.1 and electromagnetic throttle valve F9.1 with
Hydraulic oil container 8 is connected, and two discharge opeing check valves F11.1, F12.1 leakage fluid dram pass through pipeline and check-valves F13.1 and hydraulic pressure
Pump D liquid outlets are connected.
Fluid power system operation principle of the present invention is summarized as follows：
The hydraulic oil of whole hydraulic system is provided by hydraulic pump D, and hydraulic pump D power input shaft is through transmission device and gearbox 4
Power output axis connection, gearbox 4 is connected through transmission device with engine 3 again, and the speed of travel of Operation Van is by gearbox 4
Regulation.The hydraulic pump D oil suction from hydraulic oil container 8, filter is provided between hydraulic pump D and hydraulic oil container 8 to filter hydraulic pressure
Impurity in oil.Hydraulic oil container 8 is configured with the annexes such as liquid level gauge and air cleaner, in order to observe oil mass in hydraulic oil container 8
How many and inspection hydraulic fluid temperature.Pressure gauge is used for the oil liquid pressure for showing hydraulic system, and closed type electromagnetic relief valve F1 is obstructed
Used when electric as common overflow valve, off-load, protection hydraulic system safety are carried out when hydraulic system pressure is too high.Not up to
Closed type electromagnetic relief valve F1 is powered during pressure unloading, open its hydraulic pressure valve port, the hydraulic oil warp of now hydraulic pump D outputs
Closed type electromagnetic relief valve F1 directly flows back to hydraulic oil container 8, can with manual control hydraulic system off-load, make Operation Van slow down until
Parking.
During original state, each magnetic valve is not powered in hydraulic system, and each magnetic valve is in original state.Initiating task car
Engine 3, engine 3 drives gearbox 4, and then drives hydraulic pump D to start working, and hydraulic oil is through M type three position four-way electromagnetic valves
F2 interposition valve port, unit normal open type two-position four-way solenoid valve F3 left position feed liquor valve port, left position liquid valve mouth is returned directly to
In hydraulic oil container 8, now Operation Van's hydraulic motor travel motor M2, M2.1 and work tool lifting hydraulic cylinder 7 and work tool hydraulic pressure
Motor M1 is failure to actuate, and (fertilizer expelling shaft, farm chemical spray pump and the rice shoot feed rake Y3's that work tool hydraulic motor M1 is used in applying fertilizer is dynamic
Force input element).
When needing the Operation Van to walk, the left position or right position magnet coil that make M type three position four-way electromagnetic valves F2 are powered, respectively
Corresponding Operation Van moves forward and backward, and the identical only running of hydraulic power oil direction of both hydraulic circuits is different, hydraulic motor travel motor M2, M2.1
Liquid inlet and outlet exchange.
Now illustrated by taking M type three position four-way electromagnetic valves F2 left position solenoid valves as an example：Now go out liquid from hydraulic pump D
The high pressure liquid that mouth pumps out presses oil enters fixed equivalent flow divider-combiner F8 through the left position liquid valve mouths of M type three position four-way electromagnetic valves F2
Inlet, fixed equivalent flow divider-combiner F8 by high pressure liquid force feed be divided into two parts, through 2B3 type two-position four-way solenoid valves
The inlet for respectively enteing hydraulic motor travel motor M2.1, M2.2 of F10, F10.1 upper valve port, now because check-valves F13,
F13.1 tops are that hydraulic oil closes F13, F13.1, and electromagnetic throttle valve F9, F9.1 are in right position cut-off position so that hydraulic oil
It will not be flowed through any one check-valves F13, F13.1, hydraulic oil returns from hydraulic motor travel motor M2, M2.1 oil return opening
Oil, the next valve port through 2B3 type two-position four-way solenoid valves F10, F10.1 return liquid into M type three position four-way electromagnetic valves F2 right position
Valve port, left position feed liquor valve port, left position liquid valve mouth through unit normal open type two-position four-way solenoid valve F3 are returned directly to hydraulic oil container 8
Interior, Operation Van walks straight forward.When needing parking or brake hard, M type three position four-way electromagnetic valves F2 is powered off.
When needing wide-angle to turn to, 2B3 type two-position four-way solenoid valves F10 or F10.1 magnet coil are powered, made
Industry car to the left or bends to right.Now by taking above-mentioned forward travel state as an example, when 2B3 type two-position four-way solenoid valves F10 is powered,
The hydraulic circuit that liquid outlet is formed on the right side of fixed equivalent flow divider-combiner F8 is unchanged, and hydraulic motor travel motor M2.1 is according to original
Rotating speed and direction rotate, liquid outlet hydraulic oil is through 2B3 type two-position four-way solenoid valves on the left of fixed equivalent flow divider-combiner F8
F10 upper valve port enters hydraulic motor travel motor M2 actuator port, and now M2 actuator port is converted to liquid return hole, liquid of walking
Pressure motor M2 is inverted, and respective side walking mechanism is fallen back walking, and then realizes that Operation Van turns to the left, hydraulic motor travel motor M2's
Return the next valve port of the liquid through 2B3 type two-position four-way solenoid valves F10, M type three position four-way electromagnetic valves F2 right position is returned liquid valve port and flowed back to
In hydraulic oil container 8.2B3 type two-position four-way solenoid valves F10.1 is set to be powered during advance, you can to realize that Operation Van turns right
To.When being turned to when Operation Van falls back, operating method and hydraulic oil flow direction are similar.
When needing low-angle to turn to, by taking above-mentioned Operation Van straight forward walking as an example, electromagnetic throttle valve F9 is set to be powered, it is single
Pipeline connects behind the left positions of electromagnetic throttle valve F9 with hydraulic oil container 8 on the left of to valve F12, now equivalent to check valve F12 and electromagnetism
Choke valve F9 series connection after again, fixed equivalent in parallel with oil return circuit of the hydraulic motor travel motor M2 oil returns to the part of hydraulic oil container 8
The hydraulic oil of liquid outlet flows back to hydraulic oil container 8 respectively through this bypass oil circuit and hydraulic motor travel motor M2 on the left of flow divider-combiner F8.
Due to having choke valve in the left positions of electromagnetic throttle valve F9, certain resistance can be produced, by setting up in the left positions of electromagnetic throttle valve F9
Throttle valve opening can adjust drag size, and then adjust the flow through the left position oil returns of check valve F12 and electromagnetic throttle valve F9,
The speed degree turned to regulation, when the throttle valve opening in the left positions of electromagnetic throttle valve F9 is smaller, divide from this bypass oil circuit
The The hydraulic oil of stream is smaller, and the reduction of hydraulic motor travel motor M2 speed is smaller, realizes the gentle steering of low-angle.
Set in hydraulic system check valve F12, F11 and F12.1, F11.1 purpose be ensure hydraulic motor travel motor M2 and
M2.1 actuator port and oil return opening does not turn on；The purpose for setting check valve F13, F13.1 is to prevent hydraulic motor travel motor M2
Interfered between M2.1, while avoid the hydraulic oil that hydraulic pump D is exported without hydraulic valves such as M type three position four-way electromagnetic valves F2
It is directly entered in hydraulic motor travel motor M2 and M2.1 actuator port；In addition, it is also ensured that in jerk or switching operation garage
When walking state causes the hydraulic fluid pressure at hydraulic motor travel motor to exceed system set pressure, hydraulic oil can by check valve F13,
F13.1 is opened, and further opening closed type electromagnetic relief valve F1 makes whole system off-load, avoids hydraulic system because of too high pressure
Power impact damages.
Unit normal open type two-position four-way solenoid valve F3, open type two-position two-way solenoid valve F5, work tool hydraulic motor
M1, work tool lifting hydraulic cylinder 7 and O-shaped three position four-way electromagnetic valve F7 fabrication processes equipment hydraulic pressure subsystem, each original paper of the above
It is connected in hydraulic circuit, the working frequency of work tool can be made to follow Operation Van hydraulic motor travel motor M2 and M2.1 to turn
Speed changes and changed.By open type two-position two-way solenoid valve F5, counterbalance valve F6, work tool lifting hydraulic cylinder 7 and O-shaped three four
The hydraulic lifting subsystem of three-way electromagnetic valve F7 compositions, need not be dismantled, the subsystem directly uses liquid in every operation is performed
Pressure pipe road is connected with adjustable flow distributing and collecting valve F4；During due to carrying out different work replacement operation part, work tool hydraulic pressure horse
Need to disconnect and reconnect with adjustable flow distributing and collecting valve F4 up to M1, therefore be provided with snap joint 9 therebetween, so as to
In dismounting.
During straight line moving, when needing work tool hydraulic motor M1 to work, by unit normal open type two-position four-way
Magnetic valve F3 is powered, then from the hydraulic oil of M type three position four-way electromagnetic valves F2 outflows, from unit normal open type two-position four-way solenoid valve F3
Right position valve port flows into adjustable flow distributing and collecting valve F4, and hydraulic oil is divided into two-way by adjustable flow distributing and collecting valve F4 according to set flow
Output, wherein output flows into work tool hydraulic motor M1 inlets by left position valve port through snap joint 9 all the way, make working rig
Have hydraulic motor M1 operatings, and then drive the work such as farm chemical spray pump, fertilizer expelling shaft or the transplanting mechanism of work tool, complete corresponding
Job requirements；Adjustable flow distributing and collecting valve F4 another ways are exported through open type two-position two-way solenoid valve F5 bottoms valve port, counterbalance valve
F6 is connected with hydraulic oil container 8.When needing work tool lifting hydraulic cylinder 7 to work, by the upside of O-shaped three position four-way electromagnetic valve F7
Or downside magnet coil is powered, while open type two-position two-way solenoid valve F5 is set to be powered, then through adjustable flow distributing and collecting valve F4
The hydraulic oil of right lateral position valve port outflow enters work tool lifting hydraulic cylinder 7, its hydraulic stem 10 is extended or is shortened, and then controls
Manufacturing equipment rises or declined.
Claims (1)
1. a kind of caterpillar band type field working car fluid power system, including bottom are provided with crawler type walking mechanism（1）Vehicle frame
（2）；The vehicle frame（2）On be provided with by engine（3）Pass through gearbox（4）Hydraulic pump D, the hydraulic oil container of driving（8）, driving
The crawler type walking mechanism（1）First walking fluid motor-driven unit（5）With the second hydraulic motor travel motor driver element
（6）, work tool hydraulic motor M1, by the hydraulic pump D drive work tool lifting hydraulic cylinder（7）；It is characterized in that：Institute
State first and second hydraulic motor travel motor driver element（5、6）, work tool hydraulic motor M1, work tool lifting hydraulic cylinder（7）With
Hydraulic pump D, hydraulic oil container（8）Form fluid power system；The hydraulic pump D liquid outlets are communicated with three road hydraulic pressure output channels；
The first via hydraulic pressure output channel is connected with closed type electromagnetic relief valve F1 inlets, the second road hydraulic pressure output channel
Be connected with M type three position four-way electromagnetic valve F2 interposition valve ports, the 3rd road hydraulic pressure output channel respectively with the first row
Walk fluid motor-driven unit（5）With the second hydraulic motor travel motor driver element（6）It is connected；The closed type electromagnetic relief valve
F1 liquid outlet passes through pipeline and hydraulic oil container（8）It is connected；The M types three position four-way electromagnetic valve F2 interpositions valve port simultaneously with
Unit normal open type two-position four-way solenoid valve F3 left position feed liquor valve port is connected with right position feed liquor valve port, the unit normal open type two
Position four-way solenoid valve F3 left position liquid valve mouth passes through pipeline and hydraulic oil container（8）It is connected, unit normal open type two-position four-way electricity
Magnet valve F3 right position liquid valve mouth is connected with adjustable flow distributing and collecting valve F4 feed liquor valve ports, the adjustable flow distributing and collecting valve F4
Hydraulic oil is divided into two-way output according to set flow, first via output is by left position liquid valve mouth through snap joint（9）With work
Industry equipment hydraulic motor M1 inlets are connected, and the output of the second tunnel passes through open type two-position two-way solenoid valve F5 bottoms valve all the way
Mouth, counterbalance valve F6 and hydraulic oil container（8）It is connected, the work that the another way that second tunnel exports passes through three position four-way electromagnetic valve F7
Make valve port and the work tool lifting hydraulic cylinder（7）Rodless cavity connection, work tool lifting hydraulic cylinder（7）Rod chamber lead to
That crosses the three position four-way electromagnetic valve F7 returns liquid valve port and hydraulic oil container（8）It is connected；The left positions of three position four-way electromagnetic valve F2 go out liquid
Valve port is connected with fixed equivalent flow divider-combiner F8 inlet；The first walking fluid motor-driven unit（5）With
Second hydraulic motor travel motor driver element（6）Structure is identical；First walking fluid motor-driven unit（5）Including hydraulic motor
M2, electromagnetic throttle valve F9 and two-position four-way solenoid valve F10 are formed；The liquid outlet of the fixed equivalent flow divider-combiner F8 is through institute
The upper valve port for stating two-position four-way solenoid valve F10 enters the actuator port of the hydraulic motor M2, hydraulic motor M2 oil return opening
The next valve port through two-position four-way solenoid valve F10 is connected with three position four-way electromagnetic valve F2 right position valve port；Hydraulic motor M2's
Actuator port and oil return opening respectively pass through discharge opeing check valve F11, a F12 and the electromagnetic throttle valve F9 and hydraulic oil container（8）Phase
Connection, two described discharge opeing check valve F11, F12 leakage fluid dram pass through pipeline and check-valves F13 and the hydraulic pump D liquid outlets
It is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610975286.4A CN107489667B (en) | 2016-11-07 | 2016-11-07 | Crawler-type field operation car hydraulic drive system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610975286.4A CN107489667B (en) | 2016-11-07 | 2016-11-07 | Crawler-type field operation car hydraulic drive system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107489667A true CN107489667A (en) | 2017-12-19 |
| CN107489667B CN107489667B (en) | 2023-04-07 |
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ID=60642878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610975286.4A Active CN107489667B (en) | 2016-11-07 | 2016-11-07 | Crawler-type field operation car hydraulic drive system |
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| Country | Link |
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| CN (1) | CN107489667B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109984009A (en) * | 2019-04-28 | 2019-07-09 | 山东农业大学 | A kind of caterpillar band self-propelled Multifunctional fruit tree plant robot control system and method |
| CN113803306A (en) * | 2021-08-31 | 2021-12-17 | 常州常发重工科技有限公司 | Paddy field working vehicle |
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| CN109984009A (en) * | 2019-04-28 | 2019-07-09 | 山东农业大学 | A kind of caterpillar band self-propelled Multifunctional fruit tree plant robot control system and method |
| CN113803306A (en) * | 2021-08-31 | 2021-12-17 | 常州常发重工科技有限公司 | Paddy field working vehicle |
| CN113803306B (en) * | 2021-08-31 | 2023-11-17 | 常州常发重工科技有限公司 | Paddy field operation vehicle |
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| Publication number | Publication date |
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| CN107489667B (en) | 2023-04-07 |
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