CN104196809B - A kind of pile-up valve for excavator energy regenerating Yu recycling - Google Patents
A kind of pile-up valve for excavator energy regenerating Yu recycling Download PDFInfo
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- CN104196809B CN104196809B CN201410410142.5A CN201410410142A CN104196809B CN 104196809 B CN104196809 B CN 104196809B CN 201410410142 A CN201410410142 A CN 201410410142A CN 104196809 B CN104196809 B CN 104196809B
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Abstract
The invention discloses a kind of pile-up valve for excavator energy regenerating Yu recycling, including valve body, valve body is provided with the first hydraulic fluid port A1, the first pressure port P1, the second pressure port P2, the 3rd pressure port P3；First hydraulic fluid port A1 is connected with described second pressure port P2 by the first of pile-up valve the outside oil circuit, is provided with first check valve at the second pressure port P2；Second check valve it is also provided with on pile-up valve internal oil passages between first pressure port P1 and the second pressure port P2；The first guiding valve, the first logical valve, the first logic control valve it is additionally provided with within valve body.The second guiding valve, the second check valve and the second logical valve it is provided with in valve body.A kind of pile-up valve for excavator energy regenerating Yu recycling of the present invention, has energy when recyclable big arm of digger declines and can re-use the advantage such as the energy of recovery, good, the saving energy of functional reliability when big arm of digger rises.
Description
Technical field
The present invention relates to a kind of pile-up valve, a kind of pile-up valve for excavator energy regenerating Yu recycling.
Background technology
Excavator, also known as excavation machinery (excavating machinery), is to excavate higher or lower than the material holding machine side with scraper bowl,
And load haulage vehicle or unload the earthmoving machinery to rickyard.The material that excavator excavates is mainly soil, coal, silt and warp
Cross the soil after pre-pine and rock.From the point of view of the development of engineering machinery in recent years, the development of excavator is relatively fast, and excavator is
Through becoming one of topmost engineering machinery in engineering construction.What excavator now accounted for the overwhelming majority is that all-hydraulic full circle swinging is excavated
Machine.The power of electromotor is passed to the executive component such as hydraulic motor, hydraulic cylinder by hydraulic pump by the Hydraulic Power Transmission System of excavator,
Push the work forward device action, thus completes various operation.
In the course of the work, its large arm frequently declines and rises excavator.In the work process of excavator, a kind of situation is had to be
Need not consumption of engine power, when i.e. large arm falls from high to low.During big arm of digger declines, its potential energy
Also by reducing greatly, these energy are also wasted.At present, excavator there is no the energy recycle device that outfit is special.
The Chinese utility model patent of Application No. CN201320587141.9 discloses the excavator of a kind of band potential energy recovery device
Large arm energy regenerating device, including large arm and the master cylinder being fixed on large arm both sides, master cylinder connects fuel tank by electromagnetic valve group,
Be hinged with fluid force-transmitting mechanism between described large arm and frame, fluid force-transmitting mechanism between two master cylinders, fluid force-transmitting machine
Structure connects accumulator, the hidden inside being fixed on large arm of accumulator by pipeline.Although the energy of excavator is returned by this utility model
Receipts system is described, but is not related to the introduction of the special valve of excavator energy regenerating.
Summary of the invention
The present invention is for avoiding weak point present in above-mentioned prior art, it is provided that a kind of for excavator energy regenerating and profit again
Pile-up valve so that gravitional force when big arm of digger declines reclaims, and discharge in large arm uphill process and utilize back
Receive potential energy, make excavator the most energy-conservation.
The present invention solves that technical problem is by the following technical solutions.
A kind of pile-up valve for excavator energy regenerating Yu recycling, it is structurally characterized in that, including valve body, described valve body sets
It is equipped with the first hydraulic fluid port A1, the first pressure port P1, the second pressure port P2, the 3rd pressure port P3；Described first hydraulic fluid port A1 passes through
The outside oil circuit of the first of pile-up valve is connected with described second pressure port P2, is provided with one first at described second pressure port P2
Check valve so that the hydraulic oil at described first hydraulic fluid port A1 can be through the second pressure port P2 described in described outside oil circuit single flow direction；
Second check valve it is also provided with on pile-up valve internal oil passages between described first pressure port P1 and described second pressure port P2,
Hydraulic oil when energy discharges is merely able to from second pressure port P2 single flow direction the first pressure port P1；
Described first pressure port P1 is connected with oil cylinder of big arm of digger, and described first pressure port P1 is big when big arm cylinder fuel feeding
Arm rises, and during described first pressure port P1 oil return, large arm declines；Described second pressure port P2 by the internal oil passages of pile-up valve with
Described 3rd pressure port P3 is connected, and described 3rd pressure port P3 and an external energy storage device are connected；
The first piston chamber and the first logic valve pocket it is provided with in described valve body, logical between described first piston chamber and the first logic valve pocket
Cross the first oil duct to be connected；Described first logic valve pocket is connected with described first pressure port P1 by the internal galleries of pile-up valve,
Described first logical valve is arranged in described first logic valve pocket, be used for controlling described first pressure port P1 and described first oil duct it
Between break-make；First logical valve includes the first logic spool and the first logical valve spring；First logic spool is arranged at described first
Logical valve intracavity, the first logical valve spring is located at below described first logic spool, by one below described first logical valve spring
Individual plug screw is closed；
Described first logic valve pocket is connected with the first logic control valve being arranged at outside valve body also by the second oil duct and the 3rd oil duct
Connect；Described first logic control valve include the first logic control valve body, the first logic control spool, the first logic control valve spring,
Interface Pib1, interface T1；Described first logic control valve body is fixed on described valve body, is provided with in the first logic control valve body
First logic control valve pocket, described first logic control spool, the first logic control valve spring may be contained within described first logic control
In valve pocket processed, described first logic control valve pocket is by respectively by the second logic control oil duct and the 3rd logic control oil duct and institute
State the second oil duct and the 3rd oil duct is connected；Described first logic control spool is used for controlling described second logic control oil duct and
Break-make between three logic control oil ducts；Described interface Pib1 controls oil Pi1 by outside oil circuit with excavator and is connected；Described
Interface T1 is connected with oil return inlet T；
It is provided with the first guiding valve in described first piston chamber；Described first guiding valve include the first slide valve lever, the first slide valve spring,
One left sealing cap and the first right aling cap；Described first slide valve lever is inserted in described first piston chamber, the left and right of described first piston chamber
Two ends are closed by described first left sealing cap and the first right aling cap respectively, thus within described first slide valve lever is closed in described valve body；
Described first slide valve spring is positioned in the inner chamber of described first left sealing cap, resets to the right after being used for being moved to the left so that the first slide valve lever；
The right-hand member of described first slide valve lever is inserted in the inner chamber of described first right aling cap, and the inner chamber of described first right aling cap passes through interface
Pia1 controls oil Pi1 and is connected with excavator；
The second piston chamber, the second unidirectional valve pocket and the second logic valve pocket, described second piston chamber and second it is provided with in described valve body
It is connected by the 7th oil duct between logic valve pocket；It is connected by the 4th oil duct between described second piston chamber and the second unidirectional valve pocket
Logical；
Described second piston chamber is arranged at the second guiding valve；Described second check valve intracavity be provided with for control the second unidirectional valve pocket with
Second check valve of the break-make between the 4th oil duct；Described second logic valve pocket is provided with for controlling the second logic valve pocket and
Second logical valve of the break-make between seven oil ducts.
A kind of construction features for excavator energy regenerating with the pile-up valve of recycling of the present invention lies also in:
Described second check valve includes the second nonreturn valve core, the second one-way valve spring and the second check valve plug screw；Described second unidirectional
Described second unidirectional valve pocket is isolated into the second check valve upper cavity and the second check valve lower chamber by spool, on described second check valve
Cavity and the first pressure port P1 are connected；When the second nonreturn valve core moves down, described 4th oil duct is by described second unidirectional
Valve upper cavity is connected with described first pressure port P1；Described second check valve plug screw is arranged at the outlet of described second unidirectional valve pocket
On, the outlet below the second check valve lower chamber of the second unidirectional valve pocket is closed；Described second one-way valve spring is positioned at described
Between two nonreturn valve cores and the second check valve plug screw.
Described second logical valve includes the second logic spool, the second logical valve spring and the second logical valve plug screw；Described second logic
Described second logic valve pocket is isolated into the second logical valve upper cavity and the second logical valve lower chamber by spool, on described second logical valve
Cavity is connected by internal galleries and second pressure port P2 of pile-up valve；When the second logic spool moves down, the described 7th
Oil duct is connected with described second pressure port P2 by described second logical valve upper cavity；Described second logical valve plug screw is arranged at institute
State in the outlet of the second logic valve pocket, the outlet of the second logic valve pocket is closed；Described second logical valve spring is positioned at described second
Between logic spool and the second logical valve plug screw；Described second logical valve upper cavity and the 5th oil duct are connected, under the second logical valve
Cavity and the 6th oil duct are connected；
Second logic control valve includes the second logic control valve body, the second logic control spool, the second logic control valve spring, connects
Mouth Pib2, interface T2；Described second logic control valve body is fixed on described valve body, is provided with in the second logic control valve body
Two logic control valve pockets, described second logic control spool, the second logic control valve spring may be contained within described second logic control
In valve pocket；Described second logic control valve pocket is by passing through the 5th logic control oil duct and the 6th logic control oil duct respectively with described
5th oil duct and the 6th oil duct are connected；Described second logic control spool is used for controlling described 5th logic control oil duct and the 6th
Break-make between logic control oil duct；Described interface Pib2 controls oil Pi2 by outside oil circuit with excavator and is connected；Described connect
Mouth T2 is connected with oil return inlet T；
Described second guiding valve includes the second slide valve lever, the second slide valve spring, the second left sealing cap and the second right aling cap；Described second is sliding
Valve rod is inserted in described second piston chamber, and the two ends, left and right of described second piston chamber are right by described second left sealing cap and second respectively
Capping is closed, thus within described second slide valve lever is closed in described valve body；It is left that described second slide valve spring is positioned at described second
In the inner chamber of capping, reset to the right after being used for being moved to the left so that the second slide valve lever；The right-hand member of described second slide valve lever is inserted into institute
Stating in the inner chamber of the second right aling cap, the inner chamber of described second right aling cap controls oil Pi2 by interface Pia2 with excavator and is connected.
A second hydraulic fluid port A2 it is additionally provided with on described valve body.
Compared with the prior art, the present invention has the beneficial effect that:
A kind of pile-up valve for excavator energy regenerating Yu recycling of the present invention, passes through first by controlling the A1 mouth that makes of oil
Piston chamber and the first oil duct are connected, so that P1 mouth is connected with A1 mouth.Energy conversion device outside the connection of A1 mouth, by oil
Potential energy when cylinder declines becomes hydraulic oil to pass through in the pile-up valve that P2 mouth enters the present invention, then enters external energy by P3 mouth
Storage device, thus energy is stored, it is achieved by the purpose of the energy regenerating that big arm of digger declines.First logical valve sets
Between P1 mouth and the A1 mouth declining energy regenerating oil circuit；Between the first logical valve and A1 mouth, it is provided with the first guiding valve, passes through
The pressure size controlling oil changes the displacement of the first guiding valve, thus changes the openings of sizes between the first logical valve and A1 mouth, reaches
To flow during control decline energy regenerating.
By controlling oil, the 5th runner and the 6th runner are cut off, and the 6th runner is connected with oil return T, the i.e. second logical valve
Second logical valve lower chamber pressure is 0, and the second logical valve is pressed to move down by P2 mouth pressure oil, the second logical valve of the second logical valve
Core moves down so that the second logical valve is opened, and makes P2 mouth be connected by the second logical valve upper cavity and the 7th runner.When Pi2 pressure is big
When 0.7MPa, i.e. Pia2 pressure is more than 0.7MPa, and the second guiding valve is pushed to a left side, makes the 7th runner and the 4th runner communicate, pressure
Power stream stores device 23 through P2 mouth to the 7th runner from external energy, then to the 4th runner, pushes second between P2 and P1 open single
Enter into P1 mouth to valve, make the energy of recovery again discharge and make the big arm cylinder of digging machine increase, it is achieved thereby that recover energy again
Utilize.
It is provided with the second guiding valve between the second logical valve and P1 mouth, is changed the displacement of guiding valve by the pressure size controlling oil, thus change
Openings of sizes between second logical valve and P1 mouth, reaches to control flow during elevation energy release.Second logical valve is located at rising
Between P2 mouth and the P1 mouth of energy release oil circuit, and between P1 mouth and P2 mouth, increase by the second check valve prevent P1 mouth pressure
Oil flows into P2 mouth.
A kind of pile-up valve for excavator energy regenerating Yu recycling of the present invention, has when recyclable big arm of digger declines
Energy also can re-use the advantage such as the energy of recovery, good, the saving energy of functional reliability when big arm of digger rises.
Accompanying drawing explanation
Fig. 1 is a kind of front view for excavator energy regenerating Yu the pile-up valve of recycling of the present invention.
Fig. 2 is a kind of top view for excavator energy regenerating Yu the pile-up valve of recycling of the present invention.
Fig. 3 is a kind of left view for excavator energy regenerating Yu the pile-up valve of recycling of the present invention.
Fig. 4 is a kind of hydraulic schematic diagram for excavator energy regenerating Yu the pile-up valve of recycling of the present invention.
Fig. 5 is A-A sectional view (second logical valve of the present invention, the second guiding valve and the section view of the second logic control valve in Fig. 2
Figure).
Fig. 6 is B-B sectional view (first logical valve of the present invention, the first guiding valve and the section view of the first logic control valve in Fig. 2
Figure).
B-B sectional view in Fig. 2 when Fig. 7 is energy regenerating.
A-A sectional view in Fig. 2 when Fig. 8 is energy release.
Fig. 9 is the partial view (overload valve does not transships, attonity) of the C-C sectional view in Fig. 3.
Figure 10 is the partial view (overload valve transships, overload valve action) of the C-C sectional view in Fig. 3.
Figure 11 is the structure chart of the overload valve in Fig. 9 and 10.
Label in accompanying drawing 1～accompanying drawing 11: 1 valve body, 2 first check valves, 3 second check valves, 301 second nonreturn valve cores, 302
Second one-way valve spring, 303 second check valve plug screws, 4 big arm cylinders, 5 first piston chambers, 6 first logic valve pockets, 7
One logic control valve, 701 first logic control valve bodies, 702 first logic control spools, 703 first logic control valve springs,
704 first logic control valve pockets, 705 second logic control oil ducts, 706 the 3rd logic control oil ducts, 8 first oil ducts, 9
Two oil ducts, 10 the 3rd oil ducts, 11 the 4th oil ducts, 12 the 5th oil ducts, 13 the 6th oil ducts, 14 the 7th oil ducts, 15 nuts, 16
Pressure regulating screw, 17 sleeve pipes, 18 energy conversion devices, 19 stairstepping sealing rings, 20 first logical valves, 2,001 first logical valves
Core, 2,002 first logical valve springs, 21 second logical valves, 2,101 second logic spools, 2,102 second logical valve springs, 2103
Second logical valve plug screw, 22 first outside oil circuits, 23 external energy storage devices, 24 first guiding valves, 2,401 first slide valve levers,
2402 first slide valve springs, 2,403 first left sealing caps, 2,404 first right aling caps, 25 second guiding valves, 2,501 second slide valve levers,
2502 second slide valve springs, 2,503 second left sealing caps, 2,504 second right aling caps, 26 overload valve pockets, 27 overload valves, 2701 is main
Valve pocket, 2702 main valve plugs, 2703 main spool springs, 2704 conical valve bases, 2705 poppet valve cores, 2706 cone valve springs, 2707 overloads
Valve pressure port, 2708 main valve plug grooves, 2,709 first damping holes, 2,710 second damping holes, 2711 shoulder holes, 2,712 first
Oil back chamber, 2,713 second oil back chambers, 28 second piston chambers, 29 second unidirectional valve pockets, 2,901 second check valve upper cavities, 2902
Second check valve lower chamber, 30 second logic valve pockets, 3,001 second logical valve upper cavities, 3,002 second logical valve lower chambers,
31 second logic control valves, 3,101 second logic control valve bodies, 3,102 second logic control spools, 3,103 second logic controls
Valve spring, 3,104 second logic control valve pockets, 3105 the 5th logic control oil ducts, 3105 the 6th logic control oil ducts.
Below by way of detailed description of the invention, and the invention will be further described to combine accompanying drawing.
Detailed description of the invention
Seeing accompanying drawing 1～accompanying drawing 11, a kind of pile-up valve for excavator energy regenerating Yu recycling of the present invention, including valve body
1, described valve body 1 is provided with the first hydraulic fluid port A1, the first pressure port P1, the second pressure port P2, the 3rd pressure port P3；Institute
State the first hydraulic fluid port A1 to be connected with described second pressure port P2 by the first of pile-up valve the outside oil circuit 22, described second pressure
It is provided with first check valve 2 so that the hydraulic oil at described first hydraulic fluid port A1 can be through described outside oil circuit list at mouth P2
To flowing to described second pressure port P2；Pile-up valve internal oil passages between described first pressure port P1 and described second pressure port P2
On be also provided with second check valve 3 so that the hydraulic oil when energy discharges is merely able to from the second pressure port P2 single flow direction
First pressure port P1；
Described first pressure port P1 is connected with oil cylinder of big arm of digger 4, and described first pressure port P1 is to big arm cylinder 4 fuel feeding
Time large arm rise, during described first pressure port P1 oil return large arm decline；Described second pressure port P2 interior oil by pile-up valve
Road is connected with described 3rd pressure port P3, and described 3rd pressure port P3 and an external energy storage device 23 are connected；
The first piston chamber 5 and the first logic valve pocket 6, described first piston chamber 5 and the first logical valve it is provided with in described valve body 1
It is connected by the first oil duct 8 between chamber 6；Described first logic valve pocket 6 is by the internal galleries of pile-up valve and described first pressure
Power mouth P1 is connected, and described first logical valve 20 is arranged in described first logic valve pocket 6, is used for controlling described first pressure
Break-make between mouth P1 and described first oil duct 8；First logical valve 20 includes the first logic spool 2001 and the first logical valve bullet
Spring 2002；First logic spool 2001 is arranged in described first logic valve pocket 6, and the first logical valve spring 2002 is located at described
Below first logic spool 2001, closed by a plug screw below described first logical valve spring 2002；
Described first logic valve pocket 6 is also by the second oil duct 9 and the 3rd oil duct 10 and the first logic control being arranged at outside valve body 1
Valve 7 is connected；Described first logic control valve 7 include first logic control valve body the 701, first logic control spool 702,
One logic control valve spring 703, interface Pib1, interface T1；Described first logic control valve body 701 is fixed on described valve body 1
On, it is provided with the first logic control valve pocket 704 in the first logic control valve body 701, described first logic control spool 702,
One logic control valve spring 703 may be contained within described first logic control valve pocket 704, described first logic control valve pocket 704
By respectively by the second logic control oil duct 705 and the 3rd logic control oil duct 706 and described second oil duct 9 and the 3rd oil duct
10 are connected；Described first logic control spool 702 is used for controlling described second logic control oil duct 705 and the 3rd logic control
Break-make between oil duct 706；Described interface Pib1 controls oil Pi1 by outside oil circuit with excavator and is connected；Described interface T1
It is connected with oil return inlet T；
It is provided with the first guiding valve 24 in described first piston chamber 5；Described first guiding valve 24 includes the first slide valve lever 2401, first
Slide valve spring the 2402, first left sealing cap 2403 and the first right aling cap 2404；Described first slide valve lever 2401 is inserted in described first
In piston chamber 5, the two ends, left and right of described first piston chamber 5 are respectively by described first left sealing cap 2403 and the first right aling cap 2404
Close, thus within described first slide valve lever 2401 is closed in described valve body 1；Described first slide valve spring 2402 is positioned at institute
State in the inner chamber of the first left sealing cap 2403, reset to the right after being used for being moved to the left so that the first slide valve lever 2401；Described first is sliding
The right-hand member of valve rod 2401 is inserted in the inner chamber of described first right aling cap 2404, and the inner chamber of described first right aling cap 2404 is by connecing
Mouth Pia1 controls oil Pi1 and is connected with excavator；
Being provided with second piston chamber the 28, second unidirectional valve pocket 29 and the second logic valve pocket 30 in described valve body 1, described second is sliding
It is connected by the 7th oil duct 14 between valve pocket 28 and the second logic valve pocket 30；Described second piston chamber 28 and the second check valve
It is connected by the 4th oil duct 11 between chamber 29；
Described second piston chamber 28 is arranged at the second guiding valve 25；It is provided with for controlling second single in described second unidirectional valve pocket 29
The second check valve 3 to the break-make between valve pocket 29 and the 4th oil duct 11；Described second logic valve pocket 30 is provided with for controlling
Make the second logical valve 21 of break-make between the second logic valve pocket 30 and the 7th oil duct 14.
Described second check valve 3 includes the second nonreturn valve core the 301, second one-way valve spring 302 and the second check valve plug screw 303；
Described second unidirectional valve pocket 29 is isolated into the second check valve upper cavity 2901 and the second check valve by described second nonreturn valve core 301
Lower chamber 2902, described second check valve upper cavity 2901 is connected with the first pressure port P1；When the second nonreturn valve core 301 to
Lower mobile time, described 4th oil duct 11 is connected with described first pressure port P1 by described second check valve upper cavity 2901；
Described second check valve plug screw 303 is arranged in the outlet of described second unidirectional valve pocket 29, by the second of the second unidirectional valve pocket 29
Outlet below check valve lower chamber 2902 is closed；Described second one-way valve spring 302 is positioned at described second nonreturn valve core 301 He
Between second check valve plug screw 303.
Described second logical valve 21 includes the second logic spool the 2101, second logical valve spring 2102 and the second logical valve plug screw
2103；Described second logic valve pocket 30 is isolated into the second logical valve upper cavity 3001 and second by described second logic spool 2101
Logical valve lower chamber 3002, described second logical valve upper cavity 3001 passes through internal galleries and the second pressure port P2 phase of pile-up valve
Connection；When the second logic spool 2101 moves down, described 7th oil duct 14 is by described second logical valve upper cavity 3001
It is connected with described second pressure port P2；Described second logical valve plug screw 2103 is arranged at the outlet of described second logic valve pocket 30
On, the outlet of the second logic valve pocket 30 is closed；Described second logical valve spring 2102 is positioned at described second logic spool 2101
With second between logical valve plug screw 2103；Described second logical valve upper cavity 3001 is connected with the 5th oil duct 12, the second logic
Valve lower chamber 3002 is connected with the 6th oil duct 13；
Second logic control valve 31 includes second logic control valve body the 3101, second logic control spool the 3102, second logic control
Valve spring 3103 processed, interface Pib2, interface T2；Described second logic control valve body 3101 is fixed on described valve body 1, the
The second logic control valve pocket 3104, described second logic control spool 3102, second it is provided with in two logic control valve bodies 3101
Logic control valve spring 3103 may be contained within described second logic control valve pocket 3104；Described second logic control valve pocket 3104
By respectively by the 5th logic control oil duct 3105 and the 6th logic control oil duct 3106 and described 5th oil duct 12 and the 6th oil
Road 13 is connected；Described second logic control spool 3102 is used for controlling described 5th logic control oil duct 3105 and the 6th logic
Control the break-make between oil duct 3106；Described interface Pib2 controls oil Pi2 by outside oil circuit with excavator and is connected；Described
Interface T2 is connected with oil return inlet T；
Described second guiding valve 25 includes that second slide valve lever the 2501, second slide valve spring the 2502, second left sealing cap 2503 and second is right
Capping 2504；Described second slide valve lever 2501 is inserted in described second piston chamber 28, the left and right of described second piston chamber 28
Two ends are closed by described second left sealing cap 2503 and the second right aling cap 2504 respectively, thus are closed by described second slide valve lever 2501
Within described valve body 1；Described second slide valve spring 2502 is positioned in the inner chamber of described second left sealing cap 2503, be used for so that
Second slide valve lever 2501 resets to the right after being moved to the left；The right-hand member of described second slide valve lever 2501 is inserted into described second right aling cap
In the inner chamber of 2504, the inner chamber of described second right aling cap 2504 controls oil Pi2 by interface Pia2 with excavator and is connected.
A second hydraulic fluid port A2 it is additionally provided with on described valve body 1.A2 mouth is standby hydraulic fluid port, is in parallel with A1 mouth, in work
When making, A1 Yu A2 mouth arbitrarily selects one, facilitates connecting line, and another sealed in external is stifled to be closed.
Such as a kind of outline drawing for excavator energy regenerating Yu the pile-up valve of recycling that Fig. 1-3 is the present invention.In pile-up valve also
It is provided with the second logical valve and the second logic control valve, reuses for the hydraulic oil making external energy storage device be reclaimed,
Rise for big arm of digger and the pressure energy is provided.Fig. 4 is the hydraulic schematic diagram of pile-up valve.Fig. 5 and Fig. 6 is respectively in Fig. 2
A-A sectional view and B-B sectional view, can be seen that the first logical valve and the internal structure of the second logical valve respectively.Oil return inlet T is collection
Become the oil return opening of valve, be connected with outside oil sump tank.Fig. 6 is the first logical valve, the first guiding valve and the first logic control valve
Structure chart, realizes the pile-up valve large arm oil to excavator by parts such as the first logical valve, the first guiding valve and the first logic control valves
Energy recovery function when cylinder falls.Fig. 5 is the second logical valve, the second guiding valve and the structure chart of the second logic control valve, passes through
When the parts such as the second logical valve, the second guiding valve and the second logic control valve realize the big arm cylinder rising of excavator, recovery is stored
Energy again discharge, help big arm cylinder to rise, thus save the energy.
Figure after the action of the first logical valve in Fig. 6, the first guiding valve and the first logic control valve when Fig. 7 is to reclaim.This
Time, the second logical valve, the second guiding valve and the second logic control valve attonity in Fig. 5, the second logical valve, the second guiding valve are
Closed mode, noenergy release movement.
Fig. 8 be energy release time Fig. 5 in the second logical valve, the second guiding valve and the second logic control valve action after figure.This
Time, the first logical valve, the first guiding valve and the first logic control valve attonity in Fig. 6, the first logical valve, the first guiding valve are to close
Close, noenergy recovery action.
Fig. 9 is in energy recovery process, structure chart when overload valve does not transships, and overload valve is closed, and No-mistake Principle is protected
Action.Figure 10 is in energy recovery process, and structure chart during overload valve overload, overload valve is in open mode, has overload protection
Action.Figure 11 is the sectional view of the overload valve in Fig. 9 and 10.
The present invention's is a kind of as follows with the energy recovery process of the pile-up valve of recycling for excavator energy regenerating.
Oil cylinder of big arm of digger decline during, from Fig. 4 hydraulic schematic diagram with the B-B sectional view of Fig. 6, interface Pia1
With Pib1 be parallel to by exterior line together with, connecting excavator controls oil Pi1.Pia2 Yu Pib2 is by exterior line also
Being linked to together, connecting excavator controls oil Pi2.When oil circuit control Pi1 provides pressure oil, oil cylinder of big arm of digger declines；When
When Pi2 provides pressure oil, oil cylinder of big arm of digger rises.When Pi1 provides pressure, when pressure reaches 0.5MPa, i.e. Pib1
Reaching 0.5Mpa, the first logic control spool of the first logical valve control valve is pressed towards the first logic control valve spring, the first logic
Control spool to be cut off by the oil circuit between the second logic control oil duct 705 and the 3rd logic control oil duct 706, and by the 3rd logic
Control oil duct 706 to be connected with oil return inlet T by interface T1；Now, the 3rd logic control oil duct 706 and the 3rd oil duct 10 phase
Logical.
First logic valve pocket is divided into ante-chamber and two cavitys of back cavity by the first logic spool；Be positioned at above the first logic spool for front
Chamber, be positioned at below the first logic spool for back cavity；Wherein, this ante-chamber and the first pressure port P1 communicate.Due to the second oil duct 9
Back cavity with the ante-chamber above the first logic spool and lower section is connected respectively with the 3rd oil duct 10, the therefore back cavity of the first logical valve
Being connected by the 3rd oil duct, the 3rd logic control oil duct oil return inlet T, the pressure of the back cavity of the first logical valve is 0.First patrols
Collect and cut off by described first logic spool between ante-chamber and described first oil duct above spool, when the first logic spool declines,
Ante-chamber and the first oil duct are connected.Owing to the back cavity of the first logical valve connects with oil return opening so that the pressure of the back cavity of the first logical valve
Being 0, and ante-chamber and the first pressure port P1 above the first logic spool communicates, the first logic spool is pressed downward against by P1 mouth hydraulic oil,
Make the first logical valve open P1 mouth and the first oil duct to be connected.
When Pi1 pressure increase more than 0.7MPa time, i.e. Pia1 pressure more than 0.7Mpa, Pia1 pressure oil promote the first guiding valve to
Move left, make A1 mouth be connected by the first piston chamber and the first oil duct, so that P1 mouth is connected with A1 mouth.As shown in Figure 6,
Owing to adding the second check valve between P1 mouth and P2 mouth, make P1 mouth oil directly cannot enter P2 mouth by the 4th oil duct,
But P2 mouth oil can enter to enter P1 mouth by the 4th oil duct provides energy release to make oil cylinder increase.Energy conversion device 18 is arranged on
Between A1 mouth and P2 mouth.Energy conversion device 18 outside the connection of A1 mouth, potential energy when being declined by oil cylinder becomes hydraulic oil
Entered by P2 mouth in the pile-up valve of the present invention, then enter external energy storage device by P3 mouth, thus energy is stored
Come, it is achieved by the purpose of the energy regenerating that big arm of digger declines.
First guiding valve of the pile-up valve of the present invention also has flow control function.Flow control process is as follows: when Pi1 pressure is more than
During 0.7MPa, after the first oil duct and A1 mouth are connected by the first guiding valve, by control the pressure of Pi1 0.7MPa～3.5MPa it
Between change, different pressures realizes different thrusts to the first guiding valve, it is achieved the first guiding valve is in diverse location, thus controls first
Openings of sizes between oil duct and A1 mouth, finally controls by the flow of opening part to realize the flow control to P1 mouth to A1 mouth
System, reaches to control oil cylinder decrease speed so that big arm of digger can slowly decline, and causes thing without landing suddenly
Therefore, improve the security reliability of excavator work.
As it is shown in figure 5, when controlling oil Pi2 and providing pressure oil, when pressure reaches 0.5MPa, i.e. Pia2 pressure reaches 0.5MPa,
Second logic control spool of the second logical valve control valve is pushed to move down, and the second logic control spool is by the 5th runner and the 6th stream
Road cuts off, and is connected with oil return T by the 6th runner, and the second logical valve lower chamber 3002 pressure of the i.e. second logical valve is 0, P2
Second logical valve is pressed to move down by mouth (P2, P3, P4 are parallel interfaces, receive the memorizer that recovers energy) pressure oil, the second logic
Second logic spool of valve moves down so that the second logical valve is opened, and makes P2 mouth by the second logical valve upper cavity 3001 and the 7th stream
Road is connected.When Pi2 pressure is more than 0.7MPa, i.e. Pia2 pressure is more than 0.7MPa, and the second guiding valve is pushed to a left side, makes the 7th stream
Road and the 4th runner communicate, and pressure current stores device 23 through P2 mouth to the 7th runner from external energy, then to the 4th runner, pushes away
The second check valve opened between P2 and P1 enters into P1 mouth, makes the energy of recovery again discharge and makes the big arm cylinder of digging machine increase,
It is achieved thereby that the recycling recovered energy, save the energy, improve the environmental-protecting performance of excavator work.
It is provided with an overload valve pocket 26 in described valve body 1, in described overload valve pocket 26, is provided with an overload valve 27；Described
Overload valve pocket 26 is connected with the internal oil passages between described 3rd pressure port P3 and described second pressure port P2, described overload valve
Chamber 26 is also connected with oil return inlet T, described overload valve 27 control described 3rd pressure port P3 and described second pressure port P2
Between internal oil passages and described oil return inlet T between break-make.When big arm of digger declines, gravitional force is excessive, energy turns
The hydraulic oil pressure that gasifying device 18 produces is excessive, may damage whole energy-recuperation system.So during declining, once
The hydraulic oil pressure converted exceedes overload valve and sets pressure, and hydraulic oil is through P2 mouth to P3 mouth, between P2 mouth and P3 mouth
Overload valve open, by the Stress control of hydraulic oil setting in safety range, it is ensured that the safety of whole system.
Described overload valve 27 includes main valve housing 2701, main valve plug 2702, main spool spring 2703, conical valve base 2704, poppet valve core
2705, cone valve spring 2706, sleeve pipe 17 and pressure regulating screw 16；
Described main valve housing 2701 lower end is provided with overload valve pressure port 2707, described overload valve pressure port 2707 and described second pressure
It is connected between power mouth P2；The inner chamber of described main valve housing 2701 is provided with main valve plug 2702 and conical valve base 2704, described cone
Valve seat 2704 is positioned at the top of described main valve plug 2702；It is provided with overload valve oil return opening on the outer peripheral face of described main valve housing 2701
T3, described overload valve oil return inlet T 3 communicates with the part cavity below main valve plug 2702 that is positioned at of described main valve housing 2701 inner chamber；
Described main valve plug 2702 top is provided with main valve plug groove 2708, and the lower section of described main valve plug groove 2708 offers first
Damping hole 2709, described first damping hole 2709 is along the described main valve plug 2702 that axially penetrates through of described main valve plug 2702, described
It is connected by described first damping hole 2709 between main valve plug groove 2708 with described overload valve pressure port 2707；Described main valve
The lower end of spring 2703 is positioned at described main valve plug groove 2708 and the bottom land with described main valve plug groove 2708 abuts against, described
The upper end of main spool spring 2703 abuts against with the lower surface of described conical valve base 2704；It is arranged at along institute in described conical valve base 2704
State axially penetrating through in the shoulder hole 2711 of described conical valve base 2704, the lower end insertion of described poppet valve core 2705 of conical valve base 2704
Within described shoulder hole 2711 epimere, the hypomere of described shoulder hole 2711 is the second damping hole 2710, described shoulder hole 2711
By main valve housing 2701 inner chamber below described second damping hole 2710 and poppet valve core 2705 and described main valve plug groove 2708 phase
Connection；On the outer peripheral face of the epimere that described sleeve pipe 17 is sheathed on described main valve housing 2701, described sleeve pipe 17 inwall and described master
The first oil back chamber 2712 and the second oil back chamber 2713 it is formed with between the outer peripheral face of valve pocket 2701；Described poppet valve core 2705 upper
End is positioned in the inner chamber of described sleeve pipe 17, is provided with cone valve spring 2706, described pressure regulating screw 16 on described poppet valve core 2705
Lower end be threaded in the inner chamber epimere of described sleeve pipe 17, the upper end of described cone valve spring 2706 and described pressure regulating screw
The lower end of 16 abuts against；Described first oil back chamber 2712 and the intracavity inter-connection of described sleeve pipe 17, described second oil back chamber 2713
It is connected with described overload valve oil return inlet T 3；Described overload valve oil return inlet T 3 is connected with the oil return inlet T of valve body 1.
Described overload valve such as Figure 11, including main valve housing, main valve plug, main spool spring, conical valve base, poppet valve core, cone valve spring, set
The parts such as pipe, nut and pressure regulating screw.Overload valve pressure port below main valve housing is in parallel with the second pressure port P2, overload valve oil return
Mouth T3 is connected with the oil return inlet T of valve body.When P2 mouth pressure transships, pressure oil is through first damping hole the 1, second damping hole
2, arrive the position between poppet valve core and conical valve base, now in the shoulder hole in conical valve base, be full of pressure oil.Pressure oil at this
Oil pressure overload and reach overload valve set pressure (degree that this set pressure is compressed to cone valve spring is relevant, can be by pressure regulating screw
Adjust.) time, pressure oil acts on poppet valve core, promotes poppet valve core upwards to move, and makes to be separated between poppet valve core and conical valve base, makes
Conical valve base stairstepping inner chamber and the first oil back chamber between be connected so that pressure oil pass sequentially through the first oil back chamber, the
Two oil back chambers return to overload valve oil return inlet T 3, and then return among the oil sump tank of outside.When described overload valve is installed on described overload
Time in valve pocket, described overload valve oil return inlet T 3 is connected with the oil return inlet T of valve body；Now, described second oil back chamber and overload
Communicate between valve oil return inlet T 3.Therefore, communicating with oil return in the inner chamber of main valve plug upper end, the pressure of main valve plug upper end is less than
The pressure at overload valve pressure port below main valve plug, main valve plug is pushed up by pressure oil, makes overload valve pressure port and oil return inlet T
Communicate, thus can be the unloading of P2 mouth, it is ensured that security of system.
A nut 15 it is provided with, with screw thread between described nut 15 and described pressure regulating screw 16 on the top of described sleeve pipe 17
The mode coordinated is connected；Stairstepping sealing ring 19 it is provided with between described nut and described sleeve pipe 17.
The ultimate principle of the present invention, principal character and advantages of the present invention have more than been shown and described.The technical staff of the industry should
This understanding, the present invention is not restricted to the described embodiments, the principle of the simply present invention described in above-described embodiment and description,
The present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements both fall within
In the range of claimed invention.The protection domain of application claims is defined by appending claims and equivalent thereof.
Claims (5)
1., for a pile-up valve for excavator energy regenerating with recycling, it is characterized in that, including valve body (1), described valve body (1) is provided with the first hydraulic fluid port A1, the first pressure port P1, the second pressure port P2, the 3rd pressure port P3；Described first hydraulic fluid port A1 is connected with described second pressure port P2 by the first of pile-up valve the outside oil circuit (22), first check valve (2) it is provided with so that the hydraulic oil at described first hydraulic fluid port A1 can be through the second pressure port P2 described in described outside oil circuit single flow direction at described second pressure port P2；Second check valve (3) it is also provided with so that the hydraulic oil when energy discharges is merely able to from second pressure port P2 single flow direction the first pressure port P1 on pile-up valve internal oil passages between described first pressure port P1 and described second pressure port P2；
Described first pressure port P1 is connected with oil cylinder of big arm of digger (4), and described first pressure port P1 large arm when big arm cylinder (4) fuel feeding rises, and during described first pressure port P1 oil return, large arm declines；Described second pressure port P2 is connected with described 3rd pressure port P3 by the internal oil passages of pile-up valve, and described 3rd pressure port P3 and external energy storage device (23) are connected；
It is provided with the first piston chamber (5) and the first logic valve pocket (6) in described valve body (1), is connected by the first oil duct (8) between described first piston chamber (5) and the first logic valve pocket (6)；Described first logic valve pocket (6) is connected with described first pressure port P1 by the internal galleries of pile-up valve, described first logical valve (20) is arranged in described first logic valve pocket (6), is used for controlling the break-make between described first pressure port P1 and described first oil duct (8)；First logical valve (20) includes the first logic spool (2001) and the first logical valve spring (2002)；First logic spool (2001) is arranged in described first logic valve pocket (6), described first logic spool (2001) lower section is located at by first logical valve spring (2002), and described first logical valve spring (2002) lower section is closed by a plug screw；
Described first logic valve pocket (6) is connected with being arranged at valve body (1) the first logic control valve (7) outward with the 3rd oil duct (10) also by the second oil duct (9)；Described first logic control valve (7) includes the first logic control valve body (701), the first logic control spool (702), the first logic control valve spring (703), interface Pib1, interface T1；Described first logic control valve body (701) is fixed on described valve body (1), the first logic control valve pocket (704) it is provided with in first logic control valve body (701), described first logic control spool (702), first logic control valve spring (703) may be contained within described first logic control valve pocket (704), described first logic control valve pocket (704) is by being connected with described second oil duct (9) and the 3rd oil duct (10) with the 3rd logic control oil duct (706) by the second logic control oil duct (705) respectively；Described first logic control spool (702) is used for controlling the break-make between described second logic control oil duct (705) and the 3rd logic control oil duct (706)；Described interface Pib1 controls oil Pi1 by outside oil circuit with excavator and is connected；Described interface T1 is connected with oil return inlet T；
It is provided with the first guiding valve (24) in described first piston chamber (5)；Described first guiding valve (24) includes the first slide valve lever (2401), the first slide valve spring (2402), the first left sealing cap (2403) and the first right aling cap (2404)；Described first slide valve lever (2401) is inserted in described first piston chamber (5), the two ends, left and right of described first piston chamber (5) are closed by described first left sealing cap (2403) and the first right aling cap (2404) respectively, thus within described first slide valve lever (2401) is closed in described valve body (1)；Described first slide valve spring (2402) is positioned in the inner chamber of described first left sealing cap (2403), resets to the right after being used for being moved to the left so that the first slide valve lever (2401)；The right-hand member of described first slide valve lever (2401) is inserted in the inner chamber of described first right aling cap (2404), and the inner chamber of described first right aling cap (2404) controls oil Pi1 by interface Pia1 with excavator and is connected；
It is provided with the second piston chamber (28), the second unidirectional valve pocket (29) and the second logic valve pocket (30) in described valve body (1), is connected by the 7th oil duct (14) between described second piston chamber (28) and the second logic valve pocket (30)；It is connected by the 4th oil duct (11) between described second piston chamber (28) and the second unidirectional valve pocket (29)；
It is provided with the second guiding valve (25) in described second piston chamber (28)；The second check valve (3) for controlling the break-make between the second unidirectional valve pocket (29) and the 4th oil duct (11) it is provided with in described second unidirectional valve pocket (29)；Described second logic valve pocket (30) is provided with the second logical valve (21) for controlling the break-make between the second logic valve pocket (30) and the 7th oil duct (14).
A kind of pile-up valve for excavator energy regenerating Yu recycling the most according to claim 1, it is characterized in that, described second check valve (3) includes the second nonreturn valve core (301), the second one-way valve spring (302) and the second check valve plug screw (303)；Described second unidirectional valve pocket (29) is isolated into the second check valve upper cavity (2901) and the second check valve lower chamber (2902) by described second nonreturn valve core (301), and described second check valve upper cavity (2901) is connected with the first pressure port P1；When the second nonreturn valve core (301) moves down, described 4th oil duct (11) is connected with described first pressure port P1 by described second check valve upper cavity (2901)；Described second check valve plug screw (303) is arranged in the outlet of described second unidirectional valve pocket (29), the outlet of the second check valve lower chamber (2902) lower section of the second unidirectional valve pocket (29) is closed；Described second one-way valve spring (302) is positioned between described second nonreturn valve core (301) and the second check valve plug screw (303).
A kind of pile-up valve for excavator energy regenerating Yu recycling the most according to claim 1 and 2, it is characterized in that, described second logical valve (21) includes the second logic spool (2101), the second logical valve spring (2102) and the second logical valve plug screw (2103)；Described second logic valve pocket (30) is isolated into the second logical valve upper cavity (3001) and the second logical valve lower chamber (3002) by described second logic spool (2101), and described second logical valve upper cavity (3001) is connected by internal galleries and second pressure port P2 of pile-up valve；When the second logic spool (2101) moves down, described 7th oil duct (14) is connected with described second pressure port P2 by described second logical valve upper cavity (3001)；Described second logical valve plug screw (2103) is arranged in the outlet of described second logic valve pocket (30), the outlet of the second logic valve pocket (30) is closed；Described second logical valve spring (2102) is positioned between described second logic spool (2101) and the second logical valve plug screw (2103)；Described second logical valve upper cavity (3001) is connected with the 5th oil duct (12), and the second logical valve lower chamber (3002) is connected with the 6th oil duct (13)；
Second logic control valve (31) includes the second logic control valve body (3101), the second logic control spool (3102), the second logic control valve spring (3103), interface Pib2, interface T2；Described second logic control valve body (3101) is fixed on described valve body (1), being provided with the second logic control valve pocket (3104) in second logic control valve body (3101), described second logic control spool (3102), the second logic control valve spring (3103) may be contained within described second logic control valve pocket (3104)；Described second logic control valve pocket (3104) is connected with described 5th oil duct (12) and the 6th oil duct (13) with the 6th logic control oil duct (3106) by the 5th logic control oil duct (3105) respectively；Described second logic control spool (3102) is used for controlling the break-make between described 5th logic control oil duct (3105) and the 6th logic control oil duct (3106)；Described interface Pib2 controls oil Pi2 by outside oil circuit with excavator and is connected；Described interface T2 is connected with oil return inlet T.
A kind of pile-up valve for excavator energy regenerating Yu recycling the most according to claim 1 and 2, it is characterized in that, described second guiding valve (25) includes the second slide valve lever (2501), the second slide valve spring (2502), the second left sealing cap (2503) and the second right aling cap (2504)；Described second slide valve lever (2501) is inserted in described second piston chamber (28), the two ends, left and right of described second piston chamber (28) are closed by described second left sealing cap (2503) and the second right aling cap (2504) respectively, thus within described second slide valve lever (2501) is closed in described valve body (1)；Described second slide valve spring (2502) is positioned in the inner chamber of described second left sealing cap (2503), resets to the right after being used for being moved to the left so that the second slide valve lever (2501)；The right-hand member of described second slide valve lever (2501) is inserted in the inner chamber of described second right aling cap (2504), and the inner chamber of described second right aling cap (2504) controls oil Pi2 by interface Pia2 with excavator and is connected.
A kind of pile-up valve for excavator energy regenerating Yu recycling the most according to claim 1, is characterized in that, described valve body (1) is additionally provided with a second hydraulic fluid port A2.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410410142.5A CN104196809B (en) | 2014-08-19 | 2014-08-19 | A kind of pile-up valve for excavator energy regenerating Yu recycling |
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| CN201410410142.5A CN104196809B (en) | 2014-08-19 | 2014-08-19 | A kind of pile-up valve for excavator energy regenerating Yu recycling |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US3933065A (en) * | 1974-04-18 | 1976-01-20 | Johnson Service Company | Fluidic machine cycle control |
| JPS5938445B2 (en) * | 1981-08-26 | 1984-09-17 | 石川島播磨重工業株式会社 | hydraulic circuit |
| CN201273312Y (en) * | 2008-10-14 | 2009-07-15 | 杭州专用汽车有限公司 | Special valve block for jib pump vehicle pumping integration |
| CN201809801U (en) * | 2010-09-01 | 2011-04-27 | 中国一拖集团有限公司 | Control integration module of excavator hydraulic pilot oil source |
| CN102052361B (en) * | 2010-11-02 | 2013-03-06 | 王开怀 | Novel hydraulic oil channel integrated valve for loader |
| CN202628633U (en) * | 2011-12-16 | 2012-12-26 | 北汽福田汽车股份有限公司 | Hydraulic system applied in engineering machinery and communicating valve set thereof |
| CN203978990U (en) * | 2014-08-19 | 2014-12-03 | 合肥长源液压股份有限公司 | A kind of integrated valve that reclaims and recycle for excavator energy |
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