CN105402178B - Closed type hydraulic system and the vehicle containing it - Google Patents
Closed type hydraulic system and the vehicle containing it Download PDFInfo
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- CN105402178B CN105402178B CN201511025970.8A CN201511025970A CN105402178B CN 105402178 B CN105402178 B CN 105402178B CN 201511025970 A CN201511025970 A CN 201511025970A CN 105402178 B CN105402178 B CN 105402178B
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- 239000003921 oil Substances 0.000 claims abstract description 210
- 239000012530 fluid Substances 0.000 claims abstract description 69
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 50
- 238000006073 displacement reaction Methods 0.000 claims abstract description 5
- 230000008676 import Effects 0.000 claims description 50
- 238000011010 flushing procedure Methods 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Classifications
-
- 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
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
-
- 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
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
A kind of vehicle the invention discloses closed type hydraulic system and containing it, the closed type hydraulic system includes oil vessel, power set, the first motor, the second motor and control device.Oil vessel is used to store hydraulic oil, power set provide power for closed type hydraulic system, the entrance of power set is connected with oil vessel, power set include main oil pump, main oil pump is two-way variable displacement pump and has the first hydraulic fluid port and the second hydraulic fluid port, and control device is located between main oil pump, the first motor and the second motor so that main oil pump is turned on one in the first motor and the second motor and another is blocked.According to the closed type hydraulic system of the present invention, pass through the control device of setting, the motor of main oil pump Time-sharing control first and the second motor operations can be made, single pump control multi-motor can be realized to perform different work, reduce the quantity of element so that the simple in construction of the closed type hydraulic system, cost are low.
Description
Technical field
The present invention relates to technical field of engineering machinery, the vehicle more particularly, to a kind of closed type hydraulic system and containing it.
Background technology
In correlation technique, closed type hydraulic system is used for vehicle, handling machinery, ship winch, papermaking and weaving etc.
It is good with system effectiveness height, compact conformation, stationarity in plant equipment.But, in engineering machinery application, conventional enclosed
Using single single motor of pump control more than hydraulic system, the quantity of motor is equal to the quantity of pump, and this results in the member of closed type hydraulic system
Part is with high costs.
The content of the invention
It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.Therefore, the present invention is carried
Go out a kind of closed type hydraulic system, the closed type hydraulic system can realize single pump control multi-motor, and simple in construction.
The invention also provides a kind of vehicle with above-mentioned closed type hydraulic system.
The closed type hydraulic system of embodiment according to a first aspect of the present invention, including：Oil vessel, the oil vessel is used for
Store hydraulic oil；Power set for providing power for the closed type hydraulic system, the entrance of the power set with it is described
Oil vessel is connected, and the power set include main oil pump, and the main oil pump is two-way variable displacement pump and with the first hydraulic fluid port and the
Two hydraulic fluid ports；First motor and the second motor；Control device, the control device be located at the main oil pump, first motor and
So that the main oil pump is turned on and another with one in first motor and second motor between second motor
It is individual to block.
Closed type hydraulic system according to embodiments of the present invention, by the control device of setting, can make main oil pump timesharing control
Make the first motor and the second motor operations, you can to realize that single pump controls multi-motor to perform different work, reduce element
Quantity so that the simple in construction of the closed type hydraulic system, cost are low.
According to some embodiments of the present invention, first motor has first port and second port, second horse
Up to the 3rd port and the 4th port, wherein the control device includes：Insert valve group, the inserting valve group include first to
4th inserted valve, first to fourth inserted valve includes inserted valve import, inserting valve outlet and cartridge valve controlled donsole, wherein
The inserted valve import of first inserted valve and the inserted valve import of the 3rd inserted valve and the first hydraulic fluid port of the main oil pump
It is connected, the inserted valve import of second inserted valve and the inserted valve import of the 4th inserted valve and the second of the main oil pump
Hydraulic fluid port is connected, and the inserting valve outlet of first to fourth inserted valve is connected with first to fourth port respectively；Switching dress
Put, the switching device is connected between the main oil pump and the inserting valve group, the switching device controls the hydraulic oil
Enter described to cut off in the cartridge valve controlled donsole of first inserted valve and the cartridge valve controlled donsole of second inserted valve
Main oil pump and first motor, or the switching device control hydraulic oil enter the inserting of the 3rd inserted valve
To cut off the main oil pump and second motor in valve control mouth and the cartridge valve controlled donsole of the 4th inserted valve.
Further, the switching device includes：Shuttle valve, the shuttle valve has the first import, the second inlet and outlet, institute
State the first import with the first hydraulic fluid port of the main oil pump to be connected, second import is connected with the second hydraulic fluid port of the main oil pump；
Four-way valve, the four-way valve has first to fourth valve port, and first valve port is connected with the outlet of the shuttle valve, and described second
Valve port is connected with the oil vessel, and the 3rd valve port is inserted with the cartridge valve controlled donsole of first inserted valve and described second
The cartridge valve controlled donsole for filling valve is connected, and the 4th valve port is inserted with the cartridge valve controlled donsole of the 3rd inserted valve and the described 4th
The cartridge valve controlled donsole for filling valve is connected.
Alternatively, the four-way valve is two-way electric control three position four-way directional control valve.
According to some embodiments of the present invention, the power set also include：Slippage pump, the access of the slippage pump
Into the entrance of the power set, the outlet of the slippage pump respectively by the first check valve and the second check valve respectively with it is described
The first hydraulic fluid port and the second hydraulic fluid port of main oil pump are connected, and first check valve is configured to from the outlet of the slippage pump to institute
The first hydraulic fluid port one-way conduction is stated, second check valve is configured to unidirectional from the outlet of the slippage pump to second hydraulic fluid port
Conducting.
According to some embodiments of the present invention, the closed type hydraulic system also includes flushing valve, and the flushing valve is located at institute
State between power set and the oil vessel to guide part high temperature hydraulic oil to the oil vessel.
Further, the closed type hydraulic system also includes overflow valve, and the overflow valve is located at the flushing valve and described
Between oil vessel and it is respectively adapted to connect with the flushing valve and the oil vessel.
Alternatively, the flushing valve is three-way diverter valve, three of three-way diverter valve commutation valve ports respectively with it is described
The first hydraulic fluid port, the second hydraulic fluid port of main oil pump are connected with the overflow valve.
The vehicle of embodiment, including according to the enclosed of above-mentioned first aspect embodiment of the invention according to a second aspect of the present invention
Hydraulic system.
Vehicle according to embodiments of the present invention, the above-mentioned closed type hydraulic system by setting, is easy to the working oil to vehicle
Road is switched over, and realizes the different executing agency of single pump Time-sharing control, and can simplify the structure of vehicle, reduce cost.
Alternatively, the vehicle is tunnel precutting trough vehicle, and the tunnel precutting trough vehicle includes walking arrangement and chain knife
Cutting equipment, first motor is used to drive the walking arrangement, and second motor is used to drive the chain knife cutting to set
It is standby.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become from description of the accompanying drawings below to embodiment is combined
Substantially and be readily appreciated that, wherein：
Fig. 1 is the schematic diagram of closed type hydraulic system according to embodiments of the present invention；
Fig. 2 is the schematic diagram of the power set of closed type hydraulic system according to embodiments of the present invention；
Fig. 3 is the schematic diagram of the inserting valve group of closed type hydraulic system according to embodiments of the present invention；
Fig. 4 is the schematic diagram of the switching device of closed type hydraulic system according to embodiments of the present invention.
Reference：
Closed type hydraulic system 100,
Oil vessel 10,
Power set 200, main oil pump 20, the first hydraulic fluid port 201, the second hydraulic fluid port 202, slippage pump 30, import 301, outlet
302, the first check valve 21, the second check valve 22, motor 23,
First motor 4, first port 41, second port 42, the second motor 5, the 3rd port 51, the 4th port 52,
Inserting valve group 300, the first inserted valve 40, inserted valve import 401, inserting valve outlet 402, cartridge valve controlled donsole 403,
Second inserted valve 50, inserted valve import 501 inserts valve outlet 502, cartridge valve controlled donsole 503, the 3rd inserted valve 60, inserted valve
Import 601, inserts valve outlet 602, and cartridge valve controlled donsole 603, the 4th inserted valve 70, inserted valve import 701 inserts valve outlet
702, cartridge valve controlled donsole 703,
Switching device 400, shuttle valve 80, the first import 801, the second import 802, outlet 803, four-way valve 90, the first valve port
901, the second valve port 902, the 3rd valve port 903, the 4th valve port 904,
Flushing valve 6, overflow valve 7.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer ", " up time
The orientation or position relationship of the instruction such as pin ", " counterclockwise " are, based on orientation shown in the drawings or position relationship, to be for only for ease of
The description present invention and simplified description, rather than indicate or imply that the device or element of meaning must have specific orientation, Yi Te
Fixed azimuth configuration and operation, therefore be not considered as limiting the invention.In addition, term " first ", " second " are only used for
Purpose is described, and it is not intended that indicating or implying relative importance or the implicit quantity for indicating indicated technical characteristic.
Thus, " first " is defined, one or more this feature can be expressed or be implicitly included to the feature of " second ".At this
In the description of invention, " multiple " are meant that two or more, unless otherwise specifically defined.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, can be with
The concrete meaning of above-mentioned term in the present invention is understood as the case may be.
Closed type hydraulic system 100 according to embodiments of the present invention is described below with reference to Fig. 1-Fig. 4.
As Figure 1-Figure 4, closed type hydraulic system 100 according to embodiments of the present invention, including oil vessel 10, power dress
Put the 200, first motor 4, the second motor 5 and control device.
Specifically, oil vessel 10 is used to store hydraulic oil, and power set 200 are used to carry for closed type hydraulic system 100
For power.The entrance of power set 200 is connected with oil vessel 10, thus, and the hydraulic oil in oil vessel 10 can be by dynamic
The entrance of power apparatus 200 enters power set 200, so as to provide hydraulic oil for closed type hydraulic system 100.Power set
200 include main oil pump 20, and main oil pump 20 is two-way variable displacement pump and has the first hydraulic fluid port 201 and the second hydraulic fluid port 202.In other words,
First hydraulic fluid port 201 of main oil pump 20 both can also be as oil return opening as oil-out, and the second hydraulic fluid port 202 can both be made
Oil return opening can also be used as oil-out.When the first hydraulic fluid port 201 is as oil-out, then the second hydraulic fluid port 202 is used as oil return opening；When
When second hydraulic fluid port 202 is as oil-out, then the first hydraulic fluid port 201 is used as oil return opening.
First motor 4 and the second motor 5 can drive different executing agencies to perform different work respectively.Control device
Be located between main oil pump 20, the first motor 4 and the second motor 5 so that in the motor 4 of main oil pump 20 and first and the second motor 5 one
It is individual conducting and another block.It that is, being acted on by the control switching of control device, can drive the power of main oil pump 20
Action is used in and switched between the first motor 4 and the second motor 5.Oil communication between the motor 4 of main oil pump 20 and first
And the oil circuit between the second motor 5 is when blocking, now main oil pump 20 can control the first motor 4 to drive its corresponding execution machine
Structure works, and the second motor 5 is in stopped status；When the oil communication between the motor 5 of main oil pump 20 and second and with the first motor 4
Between oil circuit when blocking, now main oil pump 20 can control the second motor 5 to drive its corresponding executing agency's work, the first horse
Stopped status is in up to 4.
Thus, the control of oil circuit is switched by control device, it is possible to achieve main oil pump 20 controls the first motor 4 and second
One in motor 5 another shutdown that works, so that multiple motors can be just controlled by single pump to perform different work, from
And can in reduction system element quantity, can reduce cost, and the closed type hydraulic system 100 is simple in construction.
Closed type hydraulic system 100 according to embodiments of the present invention, by the control device of setting, can make 20 points of main oil pump
When control the first motor 4 and the second motor 5 to work, you can to realize single pump control multi-motor to perform different work, reduce
The quantity of element so that the simple in construction of the closed type hydraulic system 100, cost be low.
Closed type hydraulic system 100 according to an embodiment of the invention is described by taking Fig. 1-Fig. 4 as an example below.It is worth what is understood
It is, simply exemplary description described below, and is not considered as limiting the invention.
As Figure 1-Figure 4, closed type hydraulic system 100 includes oil vessel 10, power set 200, the first motor 4, the
Two motor 5, control device, flushing valve 6 and overflow valve 7.
Specifically, as depicted in figs. 1 and 2, power set 200 include main oil pump 20, slippage pump 30 and motor 23, electricity
The driving main oil pump 20 of motivation 23 works.Main oil pump 20 is two-way variable displacement pump and has the first hydraulic fluid port 201 and the second hydraulic fluid port 202, mends
The import 301 of oil pump 30 is configured to the entrance of power set 200, and the entrance of power set 200 is connected with oil vessel 10, that is, mended
The import 301 of oil pump 30 is connected with oil vessel 10.Control device is located between main oil pump 20, the first motor 4 and the second motor 5
So that main oil pump 20 is turned on one in the first motor 4 and the second motor 5 and another is blocked.Wherein, control device includes
Insert valve group 300 and switching device 400, the first motor 4 has first port 41 and a second port 42, the second motor 5 has the
Three ports 51 and the 4th port 52.
The first port 41 of first motor 4 can also be used as oil-out as oil inlet；The second of first motor 4
Port 42 can also be used as oil-out as oil inlet.When the first port 41 of the first motor 4 is as oil inlet, the
The second port 42 of one motor 4 is used as oil-out；When the second port 42 of the first motor 4 is as oil inlet, the first motor 4
First port 41 is used as oil-out.Similarly, when the 3rd port 51 of the second motor 5 is as oil inlet, the of the second motor 5
Four ports 52 are used as oil-out；When the 4th port 52 of the second motor 5 is as oil inlet, the 3rd port 51 of the second motor 5
It is used as oil-out.
Reference picture 3 simultaneously combines Fig. 1, and inserting valve group 300 includes the first inserted valve 40, the second inserted valve 50, the 3rd inserted valve
60 and the 4th inserted valve 70, the first inserted valve 40, the second inserted valve 50, the 3rd inserted valve 60 and the 4th inserted valve 70 include inserting
Fill valve import, inserting valve outlet and cartridge valve controlled donsole.Need to illustrate herein, the inserted valve import of the first inserted valve 40
401st, the inserted valve import 501 of the second inserted valve 50, the inserted valve 70 of inserted valve import 601 and the 4th of the 3rd inserted valve 60 insert
Dress valve import 701 can also be used as oil-out as oil inlet；The inserting valve outlet 402, second of first inserted valve 40
The inserting valve outlet of the inserting valve outlet 502 of inserted valve 50, the inserting inserted valve 70 of valve outlet 602 and the 4th of the 3rd inserted valve 60
702 can also be used as oil inlet as oil-out.Alternatively, the first inserted valve 40, the second inserted valve the 50, the 3rd are inserted
It can be two-way plug-in valve to fill the inserted valve 70 of valve 60 and the 4th.
Wherein, the inserted valve import 601 of the inserted valve 60 of inserted valve import 401 and the 3rd of the first inserted valve 40 and main oil pump
20 the first hydraulic fluid port 201 is connected, the inserted valve import 701 of the inserted valve 70 of inserted valve import 501 and the 4th of the second inserted valve 50
It is connected with the second hydraulic fluid port 202 of main oil pump 20.The inserting valve outlet of first to fourth inserted valve respectively with first to fourth port
It is connected.In other words, the inserting valve outlet 402 of the first inserted valve 40 is connected with the first port 41 of the first motor 4, the second inserted valve
50 inserting valve outlet 502 is connected with the second port 42 of the first motor 4, the inserting valve outlet 602 of the 3rd inserted valve 60 and
3rd port 51 of two motor 5 is connected, the phase of the 4th port 52 of the inserting valve outlet 702 and the second motor 5 of the 4th inserted valve 70
Even.
As shown in figure 1, switching device 400 is connected between main oil pump 20 and inserting valve group 300, switching device 400 is controlled
Hydraulic oil enter in the cartridge valve controlled donsole 503 of the inserted valve 50 of cartridge valve controlled donsole 403 and second of the first inserted valve 40 with
The motor 4 of main oil pump 20 and first is cut off, or the control hydraulic oil of switching device 400 enters the cartridge valve controlled of the 3rd inserted valve 60
To cut off the motor 5 of main oil pump 20 and second in the cartridge valve controlled donsole 703 of the inserted valve 70 of donsole 603 and the 4th.Briefly,
The switching control of switching device 400 is can be by, can cut off the oil circuit between the motor 4 of main oil pump 20 and first, or
It can also cut off the oil circuit between the motor 5 of main oil pump 20 and second, you can so that the motor 4 of main oil pump 20 and first and the second horse
The switching of oil circuit is carried out between up to 5, so as to realize single pump time-sharing multiplex.
Specifically, if oil circuit between the cut-out motor 5 of main oil pump 20 and second of switching device 400, now main oil pump 20
Oil circuit conducting between the first motor 4.When the first hydraulic fluid port 201 of main oil pump 20 is as oil-out, the second hydraulic fluid port 202 is used as back
During hydraulic fluid port, the hydraulic oil of output by the first inserted valve 40 can be delivered to the first motor 4 by main oil pump 20, and be inserted by second
Dress valve 50 flows back into main oil pump 20, so that main oil pump 20 can control the first motor 4 to rotate forward to perform the first work；Work as main oil pump
20 the second hydraulic fluid port 202 is as oil-out, when the first hydraulic fluid port 201 is as oil return opening, and main oil pump 20 can be by the hydraulic oil of output
First motor 4 is delivered to by the second inserted valve 50, and main oil pump 20 is flow back into by the first inserted valve 40, so that main oil pump 20
The first motor 4 can be controlled to invert to perform the second work (the second work is identical but in opposite direction with the content of the first work).
If the oil circuit between the cut-out motor 4 of main oil pump 20 and first of switching device 400, the now motor of main oil pump 20 and second
Oil circuit conducting between 5.It is main when the second hydraulic fluid port 202 is as oil return opening when the first hydraulic fluid port 201 of main oil pump 20 is as oil-out
The hydraulic oil of output by the 3rd inserted valve 60 can be delivered to the second motor 5 by oil pump 20, and be flowed by the 4th inserted valve 70
Main oil pump 20 is back to, so that main oil pump 20 can control the second motor 5 to rotate forward to perform the 3rd work；When the second of main oil pump 20
Hydraulic fluid port 202 is as oil-out, when the first hydraulic fluid port 201 is as oil return opening, and the hydraulic oil of output can be passed through the 4th by main oil pump 20
Inserted valve 70 is delivered to the second motor 5, and flows back into main oil pump 20 by the 3rd inserted valve 60, so that main oil pump 20 can be controlled
Second motor 5 inverts to perform the 4th work (the 4th work is identical but in opposite direction with the content of the 3rd work).
Further, reference picture 4 and Fig. 1 is combined, switching device 400 includes shuttle valve 80 and four-way valve 90.Shuttle valve 80 has
First import 801, the second import 802 and outlet 803, the first import 801 is connected with the first hydraulic fluid port 201 of main oil pump 20, and second
Import 802 is connected with the second hydraulic fluid port 202 of main oil pump 20.Four-way valve 90 has first to fourth valve port, the first valve port 901 and shuttle
The outlet 803 of valve 80 is connected, and the second valve port 902 is connected with oil vessel 10, the inserting of the 3rd valve port 903 and the first inserted valve 40
Valve control mouth 403 is connected with the cartridge valve controlled donsole 503 of the second inserted valve 50, and the 4th valve port 904 and the 3rd inserted valve 60 are inserted
Dress valve control mouth 603 is connected with the cartridge valve controlled donsole 703 of the 4th inserted valve 70.Thus, main oil pump 20 can be by the liquid of output
So that control oil circuit is used in the first import 801 or the inflow control device of the second import 802 of the force feed part by shuttle valve 80,
Flow into the hydraulic oil of shuttle valve 80 and flowed out by the outlet 803 of shuttle valve 80.Alternatively, four-way valve 90 can be two-way electric control three
Four-way reversing valve.
Need to illustrate herein, when the first hydraulic fluid port 201 of main oil pump 20 is used as oil-out, the conduct of the second hydraulic fluid port 202
During oil return opening, the hydraulic oil part that main oil pump 20 is exported is by the inflow control device of the first import 801 of shuttle valve 80；Work as master
Second hydraulic fluid port 202 of oil pump 20 is as oil-out, when the first hydraulic fluid port 201 is as oil return opening, the hydraulic oil one that main oil pump 20 is exported
Part is by the inflow control device of the second import 802 of shuttle valve 80.
When the first valve port 901 of four-way valve 90 is connected with the 4th valve port 904, the second valve port 902 is connected with the 3rd valve port 903
When, the hydraulic oil flowed out from shuttle valve 80 passes sequentially through the first valve port 901 of four-way valve 90, the 4th valve port 904 outflow four-way valve 90,
And point two-way separately flows into the cartridge valve controlled donsole 703 of the inserted valve 70 of cartridge valve controlled donsole 603 and the 4th of the 3rd inserted valve 60,
The now oil circuit cut-out between the motor 5 of main oil pump 20 and second, the second motor 5 is in stopped status.And the first inserted valve 40
Hydraulic oil in the cartridge valve controlled donsole 503 of the inserted valve 50 of cartridge valve controlled donsole 403 and second sequentially passes through the of four-way valve 90
Three valve ports 903, the second valve port 902 flow back into oil vessel 10, now the oil circuit conducting between the motor 4 of main oil pump 20 and first,
Main oil pump 20 can control the first motor 4 to work.
When the first valve port 901 of four-way valve 90 is connected with the 3rd valve port 903, the second valve port 902 is connected with the 4th valve port 904
When, the hydraulic oil flowed out from shuttle valve 80 passes sequentially through the first valve port 901 of four-way valve 90, the 3rd valve port 903 outflow four-way valve 90,
And point two-way separately flows into the cartridge valve controlled donsole 503 of the inserted valve 50 of cartridge valve controlled donsole 403 and second of the first inserted valve 40,
The now oil circuit cut-out between the motor 4 of main oil pump 20 and first, the first motor 4 is in stopped status.And the 3rd inserted valve 60
Hydraulic oil in cartridge valve controlled donsole 603 and the cartridge valve controlled donsole 703 of the 4th inserted valve 70 sequentially passes through the of four-way valve 90
Four valve ports 904, the second valve port 902 flow back into oil vessel 10, now the oil circuit conducting between the motor 5 of main oil pump 20 and second,
Main oil pump 20 can control the second motor 5 to work.
Thus, it is possible to by above-mentioned switching device 400 control main oil pump 20 in the closed type hydraulic system 100 from it is different
Between executing agency oil circuit switching, and this element of switching device 400 is few, simple in construction, be easily achieved.
In addition, reference picture 2 and combining Fig. 1, the outlet of slippage pump 30 passes through the first check valve 21 and the second check valve respectively
22 are connected with the first hydraulic fluid port 201 and the second hydraulic fluid port 202 of main oil pump 20 respectively, and the first check valve 21 is configured to by slippage pump
30 outlet 302 is to the one-way conduction of the first hydraulic fluid port 201, and the second check valve 22 is configured to from the outlet 302 of slippage pump 30 to
The one-way conduction of two hydraulic fluid port 202.When the hydraulic pressure shortage of oil in the closed type hydraulic system 100, slippage pump 30 can be opened and passed through
First check valve 21 or the second check valve 22 supplement hydraulic oil into oil circuit.
Flushing valve 6 is located between power set 200 and oil vessel 10 to be held so that part high temperature hydraulic oil is guided to oil storage
In device 10, overflow valve 7 is located between flushing valve 6 and oil vessel 10 and is respectively adapted to connect with flushing valve 6 and oil vessel 10.
The effect of overflow valve 7 is the minimum oil compensation pressure for maintaining closed type hydraulic system 100, it is ensured that the fluid in system is sufficient.Alternatively,
Flushing valve 6 can be three-way diverter valve, three of three-way diverter valve commutation valve ports the first hydraulic fluid port 201 respectively with main oil pump 20,
Second hydraulic fluid port 202 is connected with overflow valve 7.Thus, the part high temperature hydraulic oil in closed type hydraulic system 100 can pass through flushing valve
6 and overflow valve 7 flow back to oil vessel 10, so as to be radiated to the hydraulic oil in closed type hydraulic system 100.For rinsing
The operation principle of valve 6 and overflow valve 7 is known to those of ordinary skill in the art, to be no longer described in detail here.
Above-mentioned closed type hydraulic system 100 can apply in vehicle (for example, tunnel precutting trough vehicle), thus be easy to car
Working oil path switch over, realize the different executing agency of single pump Time-sharing control, and the structure of vehicle, drop can be simplified
Low cost.
Described according to embodiments of the present invention by a specific example of the course of work of tunnel precutting trough vehicle below
The operation principle and the course of work of closed type hydraulic system 100.
Specifically, precutting trough vehicle in tunnel includes walking arrangement and chain knife cutting equipment, and walking arrangement can make tunnel
Precutting trough vehicle to run, chain knife cutting equipment can make tunnel precutting trough vehicle carry out cutting work.When tunnel precutting trough vehicle
When running to tunnel front, tunnel is cut and cut using the chain knife cutting equipment installed on tunnel precutting trough vehicle
Go out the narrow slot with certain thickness and depth.From the course of work of above-mentioned tunnel precutting trough vehicle, equipment walking and chain knife
Worked when cutting different.By using the closed type hydraulic system 100 of the present invention, main oil pump 20 can be made to control tunnel pre-cut tank car
Walked and cut work.
Reference picture 1- Fig. 4, four-way valve 90 is two-way electric control three position four-way directional control valve, and the first motor 4 can drive walking to set
For so that tunnel precutting trough vehicle to run, the second motor 5 can be with drive chain knife cutting equipment so that tunnel precutting trough vehicle is carried out
Cut work.
When the left position of four-way valve 90 obtains electric, the first valve port 901 of four-way valve 90 is connected with the 4th valve port 904, the second valve
Mouth 902 is connected with the 3rd valve port 903.The hydraulic oil that main oil pump 20 is exported passes sequentially through shuttle valve 80, the arrival of four-way valve 90 the 3rd and inserted
The cartridge valve controlled donsole 703 of the inserted valve 70 of cartridge valve controlled donsole 603 and the 4th of dress valve 60, and the inserted valve of the first inserted valve 40
Hydraulic oil in the cartridge valve controlled donsole 503 of the inserted valve 50 of control mouth 403 and second flows back into oil vessel by four-way valve 90
10.Now, the oil circuit between the motor 4 of main oil pump 20 and first is turned on and the oil circuit cut-out between the motor 5 of main oil pump 20 and second,
Main oil pump 20 can control the first motor 4 to perform equipment walking work.
When the first hydraulic fluid port 201 of main oil pump 20 is as oil-out, when the second hydraulic fluid port 202 is as oil return opening, main oil pump 20 is defeated
The hydraulic oil gone out opens the first inserted valve 40, and inserted valve import 401 of the hydraulic oil through the first inserted valve 40 flows into first and inserted
Valve 40 and inserting valve outlet 402 through the first inserted valve 40 flows out the first inserted valve 40, then hydraulic oil through the first motor 4 the
Single port 41 enters the first motor 4 and the second port 42 through the first motor 4 flows out, and the hydraulic oil flowed out from the first motor 4 leads to
The inserting valve outlet 502 for crossing the second inserted valve 50 flows into the second inserted valve 50 and through the inserted valve import 501 of the second inserted valve 50
Outflow, finally flows back into oil vessel 10.Thus, by main oil pump 20 the first motor 4 can be controlled to drive tunnel precutting trough
Vehicle rollback.
When the second hydraulic fluid port 202 of main oil pump 20 is as oil-out, when the first hydraulic fluid port 201 is as oil return opening, main oil pump 20 is defeated
The hydraulic oil gone out opens the second inserted valve 50, and inserted valve import 501 of the hydraulic oil through the second inserted valve 50 flows into second and inserted
Valve 50 and inserting valve outlet 502 through the second inserted valve 50 flows out, then second port 42 of the hydraulic oil through the first motor 4 enters
First motor 4 and first port 41 through the first motor 4 flows out, the hydraulic oil flowed out from the first motor 4 passes through the first inserted valve
40 inserting valve outlet 402 flows into the first inserted valve 40 and the inserted valve import 401 through the first inserted valve 40 is flowed out, and finally flows back to
To oil vessel 10.Thus, by main oil pump 20 the first motor 4 can be controlled to drive tunnel precutting trough vehicle to advance.
When the right position of four-way valve 90 obtains electric, the first valve port 901 of four-way valve 90 is connected with the 3rd valve port 903, the second valve
Mouth 902 is connected with the 4th valve port 904.The hydraulic oil that main oil pump 20 is exported passes sequentially through shuttle valve 80, the arrival of four-way valve 90 first and inserted
The cartridge valve controlled donsole 503 of the inserted valve 50 of cartridge valve controlled donsole 403 and second of dress valve 40, and the inserted valve of the 3rd inserted valve 60
Hydraulic oil in the cartridge valve controlled donsole 703 of the inserted valve 70 of control mouth 603 and the 4th flows back into oil vessel by four-way valve 90
10.Now, the oil circuit between the motor 5 of main oil pump 20 and second is turned on and the oil circuit cut-out between the motor 4 of main oil pump 20 and first,
Main oil pump 20 can control the second motor 5 to perform chain knife cutting work.
When the first hydraulic fluid port 201 of main oil pump 20 is as oil-out, when the second hydraulic fluid port 202 is as oil return opening, main oil pump 20 is defeated
The hydraulic oil gone out opens the 3rd inserted valve 60, and inserted valve import 601 of the hydraulic oil through the 3rd inserted valve 60 flows into the 3rd and inserted
Valve 60 and inserting valve outlet 602 through the 3rd inserted valve 60 flows out the 3rd inserted valve 60, then hydraulic oil through the second motor 5 the
Three ports 51 enter the second motor 5 and the 4th port 52 through the second motor 5 is flowed out, and the hydraulic oil flowed out from the second motor 5 leads to
The inserting valve outlet 702 for crossing the 4th inserted valve 70 flows into the 4th inserted valve 70 and through the inserted valve import 701 of the 4th inserted valve 70
Outflow, finally flows back into oil vessel 10.Thus, by main oil pump 20 reversion of the drive chain knife of the second motor 5 can be controlled to cut
Cut.
When the second hydraulic fluid port 202 of main oil pump 20 is as oil-out, when the first hydraulic fluid port 201 is as oil return opening, main oil pump 20 is defeated
The hydraulic oil gone out opens the 4th inserted valve 70, and inserted valve import 701 of the hydraulic oil through the 4th inserted valve 70 flows into the 4th and inserted
Valve 70 and inserting valve outlet 702 through the 4th inserted valve 70 flows out, then fourth port 52 of the hydraulic oil through the second motor 5 enters
Second motor 5 and the 3rd port 51 through the second motor 5 is flowed out, the hydraulic oil flowed out from the second motor 5 passes through the 3rd inserted valve
60 inserting valve outlet 602 flows into the 3rd inserted valve 60 and the inserted valve import 601 through the 3rd inserted valve 60 is flowed out, and finally flows back to
To oil vessel 10.Thus, by main oil pump 20 the drive chain knife of the second motor 5 can be controlled to rotate forward cutting.
In addition, during closed hydraulic system works, the part high temperature hydraulic oil in system can pass through flushing valve 6
And overflow valve 7 flows back to oil vessel 10, so as to be radiated to the hydraulic oil in closed type hydraulic system 100.
Sum it up, by the control of the control device in closed type hydraulic system 100, can be to the horse of main oil pump 20 and first
Switched over up to the oil circuit of 4 and second between motor 5, realize the different executing agency of single pump Time-sharing control, reduce parts number
Measure, reduce cost, and the closed type hydraulic system 100 is simple in construction, is conducive to the maintenance and maintenance of system.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means to combine specific features, the knot that the embodiment or example are described
Structure, material or feature are contained at least one embodiment of the present invention or example.In this manual, to above-mentioned term
Schematic representation is not necessarily referring to identical embodiment or example.Moreover, specific features, structure, material or the spy of description
Point can in an appropriate manner be combined in any one or more embodiments or example.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
In the case of departing from the principle and objective of the present invention a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The scope of invention is limited by claim and its equivalent.
Claims (9)
1. a kind of closed type hydraulic system, it is characterised in that including：
Oil vessel, the oil vessel is used to store hydraulic oil；
Power set for providing power for the closed type hydraulic system, the entrance of the power set and the oil vessel
It is connected, the power set include main oil pump, the main oil pump is two-way variable displacement pump and has the first hydraulic fluid port and the second hydraulic fluid port；
First motor and the second motor, first motor have a first port and second port, and second motor has the
Three ports and the 4th port；
Control device, the control device is located between the main oil pump, first motor and second motor so that institute
State main oil pump and one in first motor and second motor conducting and another is blocked, the control device includes
Valve group and switching device are inserted, the inserting valve group includes first to fourth inserted valve, and first to fourth inserted valve is wrapped
Inserted valve import, inserting valve outlet and cartridge valve controlled donsole are included, wherein the inserted valve import of first inserted valve and described the
The inserted valve import of three inserted valves is connected with the first hydraulic fluid port of the main oil pump, the inserted valve import of second inserted valve and institute
State the inserted valve import of the 4th inserted valve with the second hydraulic fluid port of the main oil pump to be connected, the inserting of first to fourth inserted valve
Valve outlet is connected with first to fourth port respectively, and the switching device is connected to the main oil pump and the inserting valve group
Between, the switching device control hydraulic oil enters the cartridge valve controlled donsole of first inserted valve and described second and inserted
Fill in the cartridge valve controlled donsole of valve to cut off the main oil pump and first motor, or the switching device controls the liquid
Force feed enters in the cartridge valve controlled donsole of the 3rd inserted valve and the cartridge valve controlled donsole of the 4th inserted valve to cut off
The main oil pump and second motor.
2. closed type hydraulic system according to claim 1, it is characterised in that the switching device includes：
Shuttle valve, the shuttle valve has the first import, the second inlet and outlet, first import and the first oil of the main oil pump
Mouth is connected, and second import is connected with the second hydraulic fluid port of the main oil pump；
Four-way valve, the four-way valve has first to fourth valve port, and first valve port is connected with the outlet of the shuttle valve, described
Second valve port is connected with the oil vessel, the cartridge valve controlled donsole of the 3rd valve port and first inserted valve and described the
The cartridge valve controlled donsoles of two inserted valves is connected, the cartridge valve controlled donsole of the 4th valve port and the 3rd inserted valve and described the
The cartridge valve controlled donsole of four inserted valves is connected.
3. closed type hydraulic system according to claim 2, it is characterised in that the four-way valve is two-way electric control 3-position 4-way
Reversal valve.
4. closed type hydraulic system according to claim 1, it is characterised in that the power set also include：Slippage pump, institute
The access of slippage pump is stated into the entrance of the power set, the outlet of the slippage pump passes through the first check valve and respectively
Two check valves are connected with the first hydraulic fluid port and the second hydraulic fluid port of the main oil pump respectively, and first check valve is configured to by institute
The outlet of slippage pump is stated to the first hydraulic fluid port one-way conduction, second check valve is configured to by the outlet of the slippage pump
To the second hydraulic fluid port one-way conduction.
5. the closed type hydraulic system according to any one of claim 1-4, it is characterised in that also including flushing valve, described
Flushing valve is located between the power set and the oil vessel to guide part high temperature hydraulic oil to the oil vessel
It is interior.
6. closed type hydraulic system according to claim 5, it is characterised in that also including overflow valve, the overflow valve is located at
Between the flushing valve and the oil vessel and it is respectively adapted to connect with the flushing valve and the oil vessel.
7. closed type hydraulic system according to claim 6, it is characterised in that the flushing valve is three-way diverter valve, described
Three commutation valve ports of three-way diverter valve are connected with the first hydraulic fluid port, the second hydraulic fluid port and the overflow valve of the main oil pump respectively.
8. a kind of vehicle, it is characterised in that including the closed type hydraulic system according to any one of claim 1-7.
9. vehicle according to claim 8, it is characterised in that the vehicle is tunnel precutting trough vehicle, the tunnel is pre-
Grooving vehicle includes walking arrangement and chain knife cutting equipment, and first motor is used to drive the walking arrangement, described second
Motor is used to drive the chain knife cutting equipment.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511025970.8A CN105402178B (en) | 2015-12-30 | 2015-12-30 | Closed type hydraulic system and the vehicle containing it |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511025970.8A CN105402178B (en) | 2015-12-30 | 2015-12-30 | Closed type hydraulic system and the vehicle containing it |
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| Publication Number | Publication Date |
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| CN105402178A CN105402178A (en) | 2016-03-16 |
| CN105402178B true CN105402178B (en) | 2017-08-25 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106321536A (en) * | 2016-11-08 | 2017-01-11 | 江苏柳工机械有限公司 | Self-walking shears-fork type high-altitude operation platform walking hydraulic system |
| CN108506256A (en) * | 2018-03-27 | 2018-09-07 | 江苏恒立液压科技有限公司 | Drive hydraulic control system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP6078292B2 (en) * | 2012-10-19 | 2017-02-08 | 株式会社小松製作所 | Hydraulic drive system |
| CN103316799B (en) * | 2013-05-07 | 2016-08-03 | 艾迪士径向钻井（烟台）有限公司 | High-pressure water conservancy injection system |
| CN103807223B (en) * | 2014-02-10 | 2015-10-28 | 太原理工大学 | Single oil hydraulic motor double-loop control system |
| CN203717499U (en) * | 2014-02-28 | 2014-07-16 | 吉林大学 | Closed type hydraulic transmission system |
| CN204111196U (en) * | 2014-04-24 | 2015-01-21 | 徐州重型机械有限公司 | A kind of hoisting crane energy-saving hydraulic system and hoisting crane |
| CN203912674U (en) * | 2014-04-29 | 2014-11-05 | 云南省烟草公司曲靖市公司 | The one spraying machine that binds |
| CN203835851U (en) * | 2014-05-19 | 2014-09-17 | 山东卡特重工机械有限公司 | Hydraulic operating control system used for excavator and having crushing and quick replacing functions |
| CN205277957U (en) * | 2015-12-30 | 2016-06-01 | 中国铁建重工集团有限公司 | Closed -type hydraulic system and contain its vehicle |
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Address after: 410100 No. 88 Dongqi Road, Changsha Economic and Technological Development Zone, Changsha City, Hunan Province Patentee after: China Railway Construction Heavy Industry Co.,Ltd. Address before: 410100 Changsha economic and Technological Development Zone, Hunan, No. 88 East Road, No. seven Patentee before: China Railway Construction Heavy Industry Co.,Ltd. |