CN104314904B - Integrated valve for energy recovery and reuse of excavator and capable of preventing overload - Google Patents
Integrated valve for energy recovery and reuse of excavator and capable of preventing overload Download PDFInfo
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- CN104314904B CN104314904B CN201410410090.1A CN201410410090A CN104314904B CN 104314904 B CN104314904 B CN 104314904B CN 201410410090 A CN201410410090 A CN 201410410090A CN 104314904 B CN104314904 B CN 104314904B
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- valve
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- pressure
- logic control
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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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
- E02F9/2267—Valves or distributors
-
- 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
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
- F15B20/007—Overload
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/14—Energy-recuperation means
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses an integrated valve for energy recovery and reuse of an excavator and capable of preventing overload. The integrated valve comprises a valve body, wherein a first oil port A1, a first pressure port P1, a second pressure port P2 and a third pressure port P3 are arranged on the valve body; the first oil port A1 is communicated with the second pressure port P2 through a first external oil way of the integrated valve; a first check valve is arranged at the second pressure port P2; a second check valve is arranged on the internal oil way of the integrated valve between the pressure port P1 and the second pressure port P2; a first slide valve, a first logical valve, a first logic control valve, an overload valve, a second slide valve, the second check valve and a second logical valve are further arranged inside the valve body. The integrated valve for energy recovery and reuse of the excavator and capable of preventing overload disclosed by the invention has the advantages that the integrated valve can recover the energy generated when the big arm of the excavator is descended, prevent damage to the external energy storage device due to overlarge energy, reuse the recovered energy when the big arm of the excavator is raised, is good in working reliability and energy-saving and the like.
Description
Technical field
It is especially a kind of for excavator energy regenerating and recycling and can be antioverloading the present invention relates to a kind of pile-up valve
Pile-up valve.
Background technology
Excavator, also known as excavating machinery (excavating machinery), is excavated higher or lower than holding machine with scraper bowl
The material in face, and load haulage vehicle or unload to the earthmoving machinery of rickyard.Excavator excavate material be mainly soil, coal,
Silt and by it is pre- pine after soil and rock.From the point of view of the development of engineering machinery in recent years, the development of excavator is relatively
Hurry up, excavator has become one of topmost engineering machinery in engineering construction.What excavator now accounted for the overwhelming majority is complete
Hydraulic pressure full circle swinging excavator.The Hydraulic Power Transmission System of excavator by hydraulic pump by the power of engine pass to hydraulic motor,
The executive components such as hydraulic cylinder, push the work forward device action, so as to complete various operations.
In the course of the work, its large arm frequently declines and rises excavator.In the course of work of excavator, there are a kind of feelings
Shape is not need consumption of engine power, i.e., when large arm falls from high to low.During big arm of digger declines, it
Also by reducing greatly, these energy are also wasted potential energy.At present, be there is no on excavator and be equipped with special energy regenerating dress
Put.
The Chinese utility model patent of Application No. CN201320587141.9 discloses a kind of with potential energy recovery device
Big arm of digger energy regenerating device, including large arm and the master cylinder for being fixed on large arm both sides, master cylinder are connected by solenoid valve block
Logical fuel tank, is hinged with fluid force-transmitting mechanism between the large arm and frame, fluid force-transmitting mechanism is located between two master cylinders, stream
Body force transmission mechanism connects accumulator, the hidden inside for being fixed on large arm of accumulator by pipeline.Although the utility model is to excavating
The energy-recuperation system of machine is described, but is not related to the introduction of the special valve of excavator energy regenerating.
The content of the invention
The present invention is to avoid weak point present in above-mentioned prior art, there is provided one kind is used for excavator energy regenerating
With recycle and can antioverloading pile-up valve, with cause big arm of digger decline when gravitional force reclaim and large arm rise
During discharge and using the potential energy for reclaiming, cause excavator operationally more energy-conservation.
The present invention uses following technical scheme to solve technical problem.
One kind for excavator energy regenerating with recycle and can antioverloading pile-up valve, it is structurally characterized in that, including valve
Body, is provided with the first hydraulic fluid port A1, first pressure mouthful P1, second pressure mouthful P2, the 3rd pressure port P3 on the valve body；Described first
Hydraulic fluid port A1 is connected by the first outside oil circuit of pile-up valve with the second pressure mouthful P2, is set at the second pressure mouthful P2
There is first check valve so that the hydraulic oil at the first hydraulic fluid port A1 can be by the single flow direction of first outside oil circuit 22
The second pressure mouthful P2；Also set on pile-up valve internal oil passages between the first pressure mouthful P1 and the second pressure mouthful P2
Second check valve is put so that the hydraulic oil when energy discharges is merely able to be pressed from second pressure mouthful P2 single flow directions first
Power mouthful P1；
The first pressure mouthful P1 is connected with oil cylinder of big arm of digger, and the first pressure mouthful P1 is to big arm cylinder fuel feeding
When large arm rise, large arm declines during the first pressure mouthful P1 oil returns；The interior oil that the second pressure mouthful P2 passes through pile-up valve
Road is connected with the 3rd pressure port P3, and the 3rd pressure port P3 is connected with an external energy storage device；
The first piston chamber and the first logic valve pocke, first piston chamber and the first logic valve pocke are provided with the valve body
Between be connected by the first oil duct；Internal galleries and the first pressure mouthful P1 that first logic valve pocke passes through pile-up valve
It is connected, the first logical valve is arranged in first logic valve pocke, for controlling the first pressure mouthful P1 and described first
Break-make between oil duct；First logical valve includes the first logic spool and the first logic valve spring；First logic spool is arranged at
In first logic valve pocke, the first logic valve spring is located at first logic spool lower section, the first logic valve spring
Closed by a plug screw lower section；
First logic valve pocke also passes through the second oil duct and the 3rd oil duct and the first logic control being arranged at outside valve body
Valve is connected；The first logic control valve includes the first logic control valve body, the first logic control valve element, the first logic control
Valve spring, interface Pib1, interface T1；The first logic control valve body is fixed on the valve body, the first logic control valve body
The first logic control valve pocket is inside provided with, the first logic control valve element, the first logic control valve spring may be contained within described
In first logic control valve pocket, the first logic control valve pocket is connected by the second logic control oil duct with second oil duct
Logical, the first logic control valve pocket is connected by the 3rd logic control oil duct with the 3rd oil duct；First logic
Control valve element is used to control the break-make between the second logic control oil duct and the 3rd logic control oil duct；The interface Pib1
Oil Pi1 is controlled to be connected by outside oil circuit and excavator；The interface T1 is connected with oil return inlet T；
The first guiding valve is provided with first piston chamber；First guiding valve includes the first slide valve lever, the first guiding valve bullet
Spring, the first left sealing cap and the first right aling cap；First slide valve lever is inserted in first piston chamber, first piston chamber
Left and right two ends closed by first left sealing cap and the first right aling cap respectively, it is described so as to first slide valve lever be closed in
Within valve body；First slide valve spring is located in the inner chamber of first left sealing cap, for causing the first slide valve lever to moving to left
Resetted to the right after dynamic；The right-hand member of first slide valve lever is inserted into the inner chamber of first right aling cap, first right aling cap
Inner chamber control oil Pi1 to be connected by interface Pia1 and excavator.
It is of the invention it is a kind of for excavator energy regenerating with recycle and can antioverloading pile-up valve design feature
It is：
An overload valve pocket is provided with the valve body, an overload valve is provided with the overload valve pocket；The overload
Internal oil passages between valve pocket and the 3rd pressure port P3 and the second pressure mouthful P2 are connected, the overload valve pocket also with
Oil return inlet T is connected, and the interior oil between the 3rd pressure port P3 and the second pressure mouthful P2 is controlled by the overload valve
Break-make between road and the oil return inlet T.
The overload valve includes main valve housing, main valve plug, main spool spring, conical valve base, poppet valve core, cone valve spring, sleeve pipe and tune
Pressure screw；
The main valve housing lower end is provided with overload valve pressure port, the overload valve pressure port and the second pressure mouthful P2 it
Between be connected；Main valve plug and conical valve base are provided with the inner chamber of the main valve housing, the conical valve base is located at the upper of the main valve plug
Side；Overload valve oil return inlet T 3 is provided with the outer peripheral face of the main valve housing, in the overload valve oil return inlet T 3 and the main valve housing
The part cavity below main valve plug in chamber is communicated；
The main valve plug top is provided with main valve plug groove, and the first damping hole is offered below the main valve plug groove,
First damping hole along the main valve plug the main valve plug that axially penetrates through, the main valve plug groove and the overload valve pressure
It is connected by first damping hole between power mouthful；The lower end of the main spool spring be located at the main valve plug groove in and with institute
The bottom land for stating main valve plug groove is abutted against, and the upper end of the main spool spring abuts against with the lower surface of the conical valve base；The cone
It is provided with valve seat along the shoulder hole for axially penetrating through the conical valve base of the conical valve base, the lower end insertion institute of the poppet valve core
State within shoulder hole epimere, the hypomere of the shoulder hole is the second damping hole, the shoulder hole by second damping hole with
Main valve housing inner chamber below poppet valve core is connected with the main valve plug groove；Described sleeve pipe is sheathed on the epimere of the main valve housing
On outer peripheral face, the first oil back chamber and the second oil back chamber are formed between the outer peripheral face of described sleeve pipe inwall and the main valve housing；
The upper end of the poppet valve core is located in the inner chamber of described sleeve pipe, and cone valve spring, the pressure regulation spiral shell are provided with the poppet valve core
The lower end of nail is threaded into the inner chamber epimere of the described sleeve pipe, under the upper end of the cone valve spring and the pressure regulating screw
End abuts against；The intracavity inter-connection of first oil back chamber and described sleeve pipe, second oil back chamber and the overload valve oil return
Mouth T3 is connected；The overload valve oil return inlet T 3 is connected with the oil return inlet T of valve body.
A nut is provided with the top of described sleeve pipe, is coordinated with screw thread between the nut and the pressure regulating screw
Mode is connected；Ladder shape sealing ring is provided between the nut and described sleeve pipe.
The second piston chamber, the second unidirectional valve pocket and the second logic valve pocke, second piston chamber are provided with the valve body
And second be connected between logic valve pocke by the 7th oil duct；Pass through the 4th between second piston chamber and the second unidirectional valve pocket
Oil duct is connected；
The for controlling the break-make between the second unidirectional valve pocket and the 4th oil duct is provided with the second unidirectional valve pocket
Two check valves, second check valve includes the second nonreturn valve core, the second one-way valve spring and the second check valve plug screw；Described
Described second unidirectional valve pocket is isolated into the second check valve upper cavity and the second check valve lower chamber, described second by two nonreturn valve cores
Check valve upper cavity is connected with first pressure mouthful P1；When the second nonreturn valve core is moved down, the 4th oil duct passes through institute
The second check valve upper cavity is stated to be connected with the first pressure mouthful P1；It is single that the second check valve plug screw is arranged at described second
To in the outlet of valve pocket, by the outlet closing below the second check valve lower chamber of the second unidirectional valve pocket；Second check valve
Spring is located between second nonreturn valve core and the second check valve plug screw；
The for controlling the break-make between the second logic valve pocke and the 7th oil duct is provided with second logic valve pocke
Two logical valves；Second logical valve includes the second logic spool, the second logic valve spring and the second logical valve plug screw；Described
Second logic valve pocke is isolated into the second logical valve upper cavity and the second logical valve lower chamber, described second by two logic spools
Logical valve upper cavity is connected by the internal galleries of pile-up valve with second pressure mouthful P2；When the second logic spool is moved down
When, the 7th oil duct is connected by the second logical valve upper cavity with the second pressure mouthful P2；Second logic
Valve plug screw is arranged in the outlet of second logic valve pocke, and the outlet of the second logic valve pocke is closed；Second logical valve
Spring is located between second logic spool and the second logical valve plug screw；The second logical valve upper cavity and the 5th oil duct phase
Connection, the second logical valve lower chamber is connected with the 6th oil duct；
Second logic control valve includes the second logic control valve body, the second logic control valve element, the second logic control valve bullet
Spring, interface Pib2, interface T2；The second logic control valve body is fixed on the valve body, is set in the second logic control valve body
The second logic control valve pocket is equipped with, the second logic control valve element, the second logic control valve spring may be contained within described second
In logic control valve pocket；The second logic control valve pocket is connected by the 5th logic control oil duct with the 5th oil duct,
The second logic control valve pocket is connected by the 6th logic control oil duct with the 6th oil duct；Second logic control
Valve element is used to control the break-make between the 5th logic control oil duct and the 6th logic control oil duct；The interface Pib2 passes through
Outside oil circuit is connected with excavator control oil Pi2；The interface T2 is connected with oil return inlet T；
The second guiding valve is provided with second piston chamber；Second guiding valve includes the second slide valve lever, the second slide valve spring, the
Two left sealing caps and the second right aling cap；Second slide valve lever is inserted in second piston chamber, a left side for second piston chamber
Right two ends are closed by second left sealing cap and the second right aling cap respectively, so as to second slide valve lever is closed in into the valve body
Within；Second slide valve spring is located in the inner chamber of second left sealing cap, after causing that the second slide valve lever is moved to the left
Reset to the right；The right-hand member of second slide valve lever is inserted into the inner chamber of second right aling cap, second right aling cap it is interior
Chamber controls oil Pi2 to be connected by interface Pia2 with excavator.
A second hydraulic fluid port A2 is additionally provided with the valve body.
Compared with the prior art, the present invention has the beneficial effect that：
It is of the invention it is a kind of for excavator energy regenerating with recycle and can antioverloading pile-up valve, by controlling oil
Make A1 mouthfuls to pass through the first piston chamber and the first oil duct is connected, so that P1 mouthfuls is connected with A1 mouthfuls.Energy outside A1 mouthfuls of connection turns
Makeup is put, and potential energy when oil cylinder is declined is entered in pile-up valve of the invention into hydraulic oil by P2 mouthfuls, then by P3 mouthfuls
Into external energy storage device, so as to energy stores be got up, realize the purpose of the energy regenerating of big arm of digger decline.
First logical valve is between P1 mouthfuls and A1 mouthfuls that declines energy regenerating oil circuit；First is provided between the first logical valve and A1 mouthfuls
Guiding valve, changes the displacement of the first guiding valve, so as to change opening between the first logical valve and A1 mouthfuls by controlling the pressure size of oil
Mouth size, reaches flow during control decline energy regenerating.
P2 mouthfuls of setting overload valve, overload pressure is too high when preventing energy regenerating damages external energy storage device.
The 5th runner and the 6th runner are cut off by controlling oil, and the 6th runner and oil return T is connected, i.e. the second logic
Second logical valve lower chamber pressure of valve is moved down for 0, P2 mouthfuls of pressure oil presses to the second logical valve, and the second of the second logical valve patrols
Valve element is collected to move down so that the second logical valve opening, makes P2 mouthfuls to be connected with the 7th runner by the second logical valve upper cavity.When Pi2 pressures
When power 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 runner and the 4th runner phase
Logical, pressure current, through P2 mouthfuls to the 7th runner, then to the 4th runner, pushes second between P2 and P1 open from external energy storage device 23
Check valve enters into P1 mouthfuls, and the energy of recovery is discharged again rises the big arm cylinder of digging machine, it is achieved thereby that recovering energy
Recycling.
The second guiding valve is provided between the second logical valve and P1 mouthfuls, the displacement of guiding valve is changed by controlling the pressure size of oil, from
And change the openings of sizes between the second logical valve and P1 mouthfuls, reach flow when control elevation energy discharges.Second logical valve
Between elevation energy release P2 mouthfuls and P1 mouthfuls of oil circuit, and increase by the second check valve between P1 mouthfuls and P2 mouthfuls and prevent P1 mouthfuls
Pressure oil flows into P2 mouthfuls.
It is of the invention it is a kind of for excavator energy regenerating with recycle and can antioverloading pile-up valve, with recyclable digging
Energy when pick machine large arm declines, can prevent from recovering energy excessive damage external energy storage device and can be in big arm of digger
The advantages of energy, good functional reliability, the energy saving that reclaim being re-used during rising.
Brief description of the drawings
Fig. 1 be it is of the invention it is a kind of for excavator energy regenerating with recycle and can antioverloading pile-up valve main view
Figure.
Fig. 2 be it is of the invention it is a kind of for excavator energy regenerating with recycle and can antioverloading pile-up valve vertical view
Figure.
Fig. 3 be it is of the invention it is a kind of for excavator energy regenerating with recycle and can antioverloading pile-up valve left view
Figure.
Fig. 4 be it is of the invention it is a kind of for excavator energy regenerating with recycle and can antioverloading pile-up valve hydraulic pressure it is former
Reason figure.
Fig. 5 is that (the second logical valve of the invention, the second guiding valve and the second logic control valve are cutd open for A-A sectional views in Fig. 2
View).
Fig. 6 is that (the first logical valve of the invention, the first guiding valve and the first logic control valve are cutd open for B-B sectional views in Fig. 2
View).
B-B sectional views when Fig. 7 is energy regenerating in Fig. 2.
Fig. 8 is the A-A sectional views in Fig. 2 when energy discharges.
Fig. 9 is the partial view (overload valve does not overload, attonity) of the C-C sectional views in Fig. 3.
Figure 10 is the partial view (overload valve overloads, and overloads valve events) of the C-C sectional views in Fig. 3.
Figure 11 is the structure chart of the overload valve in Fig. 9 and 10.
Label in 1~accompanying drawing of 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 pockes, 7 first patrol
Volume control valve, 701 first logic control valve bodies, 702 first logic control valve elements, 703 first logic control valve springs, 704 the
One logic control valve pocket, 705 second logic control oil ducts, 706 the 3rd logic control oil ducts, 8 first oil ducts, 9 second oil ducts, 10
3rd oil duct, 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 screws, 17 sets
Pipe, 18 energy conversion devices, 19 ladder shape sealing rings, 20 first logical valves, 2,001 first logic spools, 2,002 first logical valves
Spring, 21 second logical valves, 2,101 second logic spools, 2,102 second logic valve springs, 2,103 second logical valve plug screws, 22
One outside oil circuit, 23 external energy storage devices, 24 first guiding valves, 2,401 first slide valve levers, 2,402 first slide valve springs, 2403
First left sealing cap, 2,404 first right aling caps, 25 second guiding valves, 2,501 second slide valve levers, 2,502 second slide valve springs, 2,503 second
Left sealing cap, 2,504 second right aling caps, 26 overload valve pockets, 27 overload valves, 2701 main valve housings, 2702 main valve plugs, 2703 main spool springs,
2704 conical valve bases, 2705 poppet valve cores, 2706 cone valve springs, 2707 overload valve pressure ports, 2708 main valve plug grooves, 2,709 first resistances
Buddhist nun hole, 2,710 second damping holes, 2711 shoulder holes, 2,712 first oil back chambers, 2,713 second oil back chambers, 28 second piston chambers, 29
Second unidirectional valve pocket, 2,901 second check valve upper cavities, 2,902 second check valve lower chambers, 30 second logic valve pockes, 3,001
Two logical valve upper cavities, 3,002 second logical valve lower chambers, 31 second logic control valves, 3,101 second logic control valve bodies,
3102 second logic control valve elements, 3,103 second logic control valve springs, 3,104 second logic control valve pockets, 3105 the 5th logics
Control oil duct, 3105 the 6th logic control oil ducts.
Below by way of specific embodiment, and the invention will be further described with reference to accompanying drawing.
Specific embodiment
It is of the invention a kind of for excavator energy regenerating and recycling and can be antioverloading referring to 1~accompanying drawing of accompanying drawing 11
Pile-up valve, including valve body 1, are provided with the first hydraulic fluid port A1, first pressure mouthful P1, second pressure mouthful P2, the 3rd pressure on the valve body 1
Power mouthful P3；The first hydraulic fluid port A1 is connected by the first outside oil circuit 22 of pile-up valve with the second pressure mouthful P2, described
First check valve 2 is provided with second pressure mouthful P2 so that hydraulic oil at the first hydraulic fluid port A1 can be by described the
Second pressure described in the single flow direction of one outside oil circuit 22 mouthful P2；Between the first pressure mouthful P1 and the second pressure mouthful P2
Second check valve 3 is also provided with pile-up valve internal oil passages so that the hydraulic oil when energy discharges is merely able to from second
Pressure port P2 single flow directions first pressure mouthful P1；
The first pressure mouthful P1 is connected with oil cylinder of big arm of digger 4, and the first pressure mouthful P1 is supplied to big arm cylinder 4
Large arm rises when oily, and large arm declines during the first pressure mouthful P1 oil returns；The inside that the second pressure mouthful P2 passes through pile-up valve
Oil circuit is connected with the 3rd pressure port P3, and the 3rd pressure port P3 is connected with an external energy storage device 23；
The first piston chamber 5 and the first logic valve pocke 6, the logic of first piston chamber 5 and first are provided with the valve body 1
It is connected by the first oil duct 8 between valve pocket 6；The internal galleries and described first that first logic valve pocke 6 passes through pile-up valve
Pressure port P1 is connected, and first logical valve 20 is arranged in first logic valve pocke 6, for controlling the first pressure
Break-make between mouth P1 and 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 first logic valve pocke 6, and the first logic valve spring 2002 is located at described the
Closed by a plug screw lower section of one logic spool 2001, the lower section of the first logic valve spring 2002；
First logic valve pocke 6 also passes through the second oil duct 9 and the 3rd oil duct 10 and the first logic being arranged at outside valve body 1
Control valve 7 is connected；The first logic control valve 7 include the first logic control valve body 701, the first logic control valve element 702,
First logic control valve spring 703, interface Pib1, interface T1；The first logic control valve body 701 is fixed on the valve body 1
On, it is provided with the first logic control valve pocket 704 in the first logic control valve body 701, the first logic control valve element 702, the
One logic control valve spring 703 may be contained within the first logic control valve pocket 704, the first logic control valve pocket 704
It is connected with second oil duct 9 by the second logic control oil duct 705, the first logic control valve pocket 704 passes through the 3rd
Logic control oil duct 706 is connected with the 3rd oil duct 10；The first logic control valve element 702 is used to control described second
Break-make between the logic control oil duct 706 of logic control oil duct 705 and the 3rd；The interface Pib1 passes through outside oil circuit and excavates
Machine control oil Pi1 is connected；The interface T1 is connected with oil return inlet T；
The first guiding valve 24 is provided with first piston chamber 5；First guiding valve 24 includes the first slide valve lever 2401, the
One slide valve spring 2402, the first left sealing cap 2403 and the first right aling cap 2404；First slide valve lever 2401 is inserted in described
In one piston chamber 5, the left and right two ends of first piston chamber 5 are respectively by the right aling cap 2404 of first left sealing cap 2403 and first
Closing, so as to first slide valve lever 2401 is closed within the valve body 1；First slide valve spring 2402 is located at described
In the inner chamber of the first left sealing cap 2403, for causing that the first slide valve lever 2401 resets to the right after being moved to the left；First guiding valve
The right-hand member of bar 2401 is inserted into the inner chamber of first right aling cap 2404, and the inner chamber of first right aling cap 2404 passes through interface
Pia1 is connected with excavator control oil Pi1.
As Fig. 1-3 for it is of the invention it is a kind of for excavator energy regenerating with recycle and can antioverloading pile-up valve it is outer
Shape figure.The second logical valve and the second logic control valve are also provided with pile-up valve, for causing that external energy storage device is returned
The hydraulic oil of receipts is reused, and the pressure energy is provided for big arm of digger rises.Fig. 4 is the hydraulic schematic diagram of pile-up valve.Fig. 5 and
Fig. 6 is respectively A-A sectional views and B-B sectional views in Fig. 2, and the internal junction of the first logical valve and the second logical valve is can be seen that respectively
Structure.Oil return inlet T is the oil return opening of pile-up valve, is connected with outside oil return box.Fig. 6 is the first logical valve, the first guiding valve and
The structure chart of one logic control valve, pile-up valve is realized by parts such as the first logical valve, the first guiding valve and the first logic control valves
Energy recovery function when big arm cylinder to excavator falls.Fig. 5 is the second logical valve, the second guiding valve and the second logic control
The structure chart of valve, the big arm cylinder of excavator is realized by parts such as the second logical valve, the second guiding valve and the second logic control valves
During rising, the energy for reclaiming storage is discharged again, help big arm cylinder to rise, so that energy saving.
After Fig. 7 is the action of the first logical valve, the first guiding valve and the first logic control valve when can reclaim in Fig. 6
Figure.Now, in Fig. 5 the second logical valve, the second guiding valve and the second logic control valve attonity, the second logical valve, the second guiding valve
It is closed mode, noenergy release movement.
After Fig. 8 is for the action of the second logical valve in Fig. 5 when energy discharges, the second guiding valve and the second logic control valve
Figure.Now, in Fig. 6 the first logical valve, the first guiding valve and the first logic control valve attonity, the first logical valve, the first guiding valve
It is to close, noenergy recovery action.
Fig. 9 is in energy recovery process, structure chart when overload valve does not overload, overload valve is closed, No-mistake Principle
Protection act.Figure 10 is in energy recovery process, structure chart when overload valve overloads, overload valve is in open mode, there is overload
Protection act.Figure 11 is the sectional view of the overload valve in Fig. 9 and 10.
It is of the invention it is a kind of for excavator energy regenerating with recycle and can antioverloading pile-up valve energy regenerating mistake
Journey is as follows.
During oil cylinder of big arm of digger decline, in the B-B sectional views from Fig. 4 hydraulic schematic diagrams with Fig. 6, interface
Pia1 and Pib1 be parallel to by exterior line together with, connecting excavator control oil Pi1.Pia2 and Pib2 is by exterior tube
Road is parallel to together, connecting excavator control oil Pi2.When oil circuit control Pi1 provides pressure oil, under oil cylinder of big arm of digger
Drop；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 reaches 0.5Mpa, and the first logic control valve element of the first logical valve control valve is pressed towards the first logic control valve spring, the
One logic control valve element cuts off the oil circuit between the second logic control oil duct 705 and the 3rd logic control oil duct 706, and by the
Three logic control oil ducts 706 are connected by interface T1 with oil return inlet T；Now, the 3rd logic control oil duct 706 and the 3rd oil duct 10
Communicate.
First logic valve pocke is divided into two cavitys of ante-chamber and back cavity by the first logic spool；Positioned at the first logic spool top
Be ante-chamber, below the first logic spool is back cavity；Wherein, the ante-chamber is communicated with first pressure mouthful P1.Due to second
The oil duct 10 of oil duct 9 and the 3rd is connected with ante-chamber and the back cavity of lower section above the first logic spool respectively, therefore the first logic
The back cavity of valve is connected by the 3rd oil duct, the 3rd logic control oil duct oil return inlet T, and the pressure of the back cavity of the first logical valve is 0.
Separated by first logic spool between ante-chamber and first oil duct above first logic spool, when the first logic spool
During decline, ante-chamber and the first oil duct are connected.Because the back cavity of the first logical valve is connected with oil return opening so that after the first logical valve
The pressure in chamber is 0, and ante-chamber above the first logic spool is communicated with first pressure mouth P1, and P1 mouthfuls of hydraulic oil is by the first logical valve
Core is pressed downward, and opens the first logical valve and P1 mouthfuls is connected with the first oil duct.
When Pi1 pressure increases more than 0.7MPa, i.e., Pia1 pressure is more than 0.7Mpa, and Pia1 pressure oils promote the first guiding valve
It is moved to the left, makes A1 mouthfuls to pass through the first piston chamber and the first oil duct is connected, so that P1 mouthfuls is connected with A1 mouthfuls.As shown in fig. 6, by
In increased the second check valve between P1 mouthfuls and P2 mouthfuls, P1 mouthfuls of oil directly cannot be entered P2 mouthfuls by the 4th oil duct, but
P2 mouthfuls of oil can enter to enter P1 mouthfuls of offer energy release by the 4th oil duct rises oil cylinder.Energy conversion device 18 is arranged on A1
Between mouth and P2 mouthfuls.Energy conversion device 18 outside A1 mouthfuls of connection, potential energy when oil cylinder is declined passes through into hydraulic oil
P2 mouthfuls enters in pile-up valve of the invention, then enters external energy storage device by P3 mouthfuls, real so as to energy stores be got up
The purpose of the energy regenerating that now big arm of digger is declined.
First guiding valve of pile-up valve of the invention also has flow control function.Flow control process is as follows：When Pi1 pressure
During more than 0.7MPa, after the first guiding valve connects the first oil duct with A1 mouthfuls, by controlling the pressure of Pi1 in 0.7MPa~3.5MPa
Between change, different pressures are realized to the different thrusts of the first guiding valve, realize that the first guiding valve is in diverse location, so as to control the
Openings of sizes between one oil duct and A1 mouthfuls, final control passes through the flow at opening to realize the flow control to P1 mouthfuls to A1 mouthfuls
System, reaches control 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.
An overload valve pocket 26 is provided with the valve body 1, an overload valve 27 is provided with the overload valve pocket 26；Institute
The internal oil passages stated between overload valve pocket 26 and the 3rd pressure port P3 and the second pressure mouthful P2 are connected, the overload
Valve pocket 26 is also connected with oil return inlet T, and the 3rd pressure port P3 and the second pressure mouthful P2 are controlled by the overload valve 27
Between internal oil passages and the oil return inlet T between break-make.When big arm of digger declines, gravitional force is excessive, energy turns
The high pressure oil pressure that 18 generations are put in makeup is excessive, may damage whole energy-recuperation system.So during decline, once
The high pressure oil pressure for being converted exceedes overload valve and sets pressure, when hydraulic oil is by second pressure mouthful P2 to the 3rd pressure port P3,
Overload valve between second pressure mouthful P2 and the 3rd pressure port P3 is opened, by the Stress control of hydraulic oil in setting safe range
It is interior, it is ensured that the safety of whole system.
The overload valve 27 includes main valve housing 2701, main valve plug 2702, main spool spring 2703, conical valve base 2704, poppet valve core
2705th, cone valve spring 2706, sleeve pipe 17 and pressure regulating screw 16；
The lower end of the main valve housing 2701 is provided with overload valve pressure port 2707, the overload valve pressure port 2707 and described
It is connected between two pressure port P2；Main valve plug 2702 and conical valve base 2704 are provided with the inner chamber of the main valve housing 2701, it is described
Conical valve base 2704 is located at the top of the main valve plug 2702；Overload valve oil return opening is provided with the outer peripheral face of the main valve housing 2701
T3, the overload valve oil return inlet T 3 is communicated with the part cavity positioned at the lower section of main valve plug 2702 of the inner chamber of the main valve housing 2701；
The top of the main valve plug 2702 is provided with main valve plug groove 2708, and the lower section of the main valve plug groove 2708 offers
First damping hole 2709, first damping hole 2709 axially penetrates through the main valve plug 2702 along the main valve plug 2702,
It is connected by first damping hole 2709 between the main valve plug groove 2708 and the overload valve pressure port 2707；It is described
The lower end of main spool spring 2703 is located in the main valve plug groove 2708 and is abutted against with the bottom land of the main valve plug groove 2708,
The upper end of the main spool spring 2703 abuts against with the lower surface of the conical valve base 2704；Edge is provided with the conical valve base 2704
The shoulder hole 2711 for axially penetrating through the conical valve base 2704 of the conical valve base 2704, the lower end insertion of the poppet valve core 2705
Within the epimere of the shoulder hole 2711, the hypomere of the shoulder hole 2711 is the second damping hole 2710, and the shoulder hole 2711 leads to
Second damping hole 2710 is crossed to be connected with the inner chamber of main valve housing 2701 of the lower section of poppet valve core 2705 and the main valve plug groove 2708
It is logical；Described sleeve pipe 17 is sheathed on the outer peripheral face of the epimere of the main valve housing 2701, in the inwall of described sleeve pipe 17 and the main valve
The first oil back chamber 2712 and the second oil back chamber 2713 are formed between the outer peripheral face of set 2701；The upper end position of the poppet valve core 2705
In the inner chamber of described sleeve pipe 17, cone valve spring 2706 is provided with the poppet valve core 2705, under the pressure regulating screw 16
End is threaded into the inner chamber epimere of the described sleeve pipe 17, the upper end of the cone valve spring 2706 and the pressure regulating screw 16
Lower end abuts against；The intracavity inter-connection of first oil back chamber 2712 and described sleeve pipe 17, second oil back chamber 2713 and institute
Overload valve oil return inlet T 3 is stated to be connected；The overload valve oil return inlet T 3 is connected with the oil return inlet T of valve body 1.
The 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 second pressure mouthful P2, overload valve oil return
Mouth T3 is connected with the oil return inlet T of valve body.When P2 mouthfuls of pressure overload, pressure oil is arrived through the first damping hole 1, the second damping hole 2
Up to the position between poppet valve core and conical valve base, pressure oil is now full of in the shoulder hole in conical valve base.Oil of pressure oil at this
Pressure overload and reach overload valve set pressure (set pressure is related to the degree that cone valve spring is compressed, can be by pressure regulation spiral shell
Nail adjustment.) when, pressure oil is acted on poppet valve core, promotes poppet valve core to move upwards, makes to be separated between poppet valve core and conical valve base,
So that be connected between the stairstepping inner chamber of conical valve base and the first oil back chamber, so that pressure oil passes sequentially through the first oil return
Chamber, the second oil back chamber return to overload valve oil return inlet T 3, and then return among the oil return box of outside.When the overload valve is installed on institute
State when in overload valve pocket, the overload valve oil return inlet T 3 is connected with the oil return inlet T of valve body；Now, second oil back chamber with
Communicated between overload valve oil return inlet T 3.Therefore, communicated with oil return in the inner chamber of main valve plug upper end, the pressure of main valve plug upper end
Less than the pressure at the overload valve pressure port below main valve plug, main valve plug is pushed up by pressure oil, is made overload valve pressure port and is returned
Hydraulic fluid port T-phase is led to, so as to can be P2 mouthfuls of unloading, it is ensured that system safety.
A nut 15 is provided with the top of described sleeve pipe 17, with spiral shell between the nut 15 and the pressure regulating screw 16
The mode that line coordinates is connected；Ladder shape sealing ring 19 is provided between the nut and described sleeve pipe 17.
The second piston chamber 28, the second unidirectional valve pocket 29 and the second logic valve pocke 30, described second are provided with the valve body 1
It is connected by the 7th oil duct 14 between the logic valve pocke 30 of piston chamber 28 and second；The check valve of second piston chamber 28 and second
It is connected by the 4th oil duct 11 between chamber 29；
It is provided with the second unidirectional valve pocket 29 logical between the second unidirectional valve pocket 29 and the 4th oil duct 11 for controlling
The second disconnected check valve 3, second check valve 3 includes that the second nonreturn valve core 301, the second one-way valve spring 302 and second are single
To valve plug screw 303；Described second unidirectional valve pocket 29 is isolated into the second check valve upper cavity 2901 by second nonreturn valve core 301
With the second check valve lower chamber 2902, the second check valve upper cavity 2901 and first pressure a mouthful P1 is connected；When the second list
When being moved down to valve element 301, the 4th oil duct 11 is by the second check valve upper cavity 2901 and the first pressure
Mouth P1 is connected；The second check valve plug screw 303 is arranged in the outlet of the described second unidirectional valve pocket 29, by the second check valve
The outlet closing of the lower section of the second check valve lower chamber 2902 in chamber 29；It is single that second one-way valve spring 302 is located at described second
To between the check valve plug screw 303 of valve element 301 and second；
It is provided with second logic valve pocke 30 logical between the second logic valve pocke 30 and the 7th oil duct 14 for controlling
The second disconnected logical valve 21；Second logical valve 21 includes the second logic spool 2101, the second logic valve spring 2102 and the
Two logical valve plug screws 2103；Second logic valve pocke 30 is isolated into the second logical valve epicoele by second logic spool 2101
The logical valve lower chamber 3002 of body 3001 and second, the second logical valve upper cavity 3001 is by the internal galleries of pile-up valve and the
Two pressure port P2 are connected；When the second logic spool 2101 is moved down, the 7th oil duct 14 is by second logic
Valve upper cavity 3001 is connected with the second pressure mouthful P2；The second logical valve plug screw 2103 is arranged at second logic
In the outlet of valve pocket 30, the outlet of the second logic valve pocke 30 is closed；The second logic valve spring 2102 is located at described second
Between the logical valve plug screw 2103 of logic spool 2101 and second；The second logical valve upper cavity 3001 is connected with the 5th oil duct 12
Logical, the second logical valve lower chamber 3002 is connected with the 6th oil duct 13；
Second logic control valve 31 includes that the second logic control valve body 3101, the second logic control valve element 3102, second are patrolled
Collect control valve spring 3103, interface Pib2, interface T2；The second logic control valve body 3101 is fixed on the valve body 1, the
The second logic control valve pocket 3104, the second logic control valve element 3102, second are provided with two logic control valve bodies 3101
Logic control valve spring 3103 may be contained within the second logic control valve pocket 3104；The second logic control valve pocket 3104
It is connected with the 5th oil duct 12 by the 5th logic control oil duct 3105, the second logic control valve pocket 3104 is by the
Six logic control oil ducts 3106 are connected with the 6th oil duct 13；The second logic control valve element 3102 is described for controlling
Break-make between 5th logic control oil duct 3105 and the 6th logic control oil duct 3106；The interface Pib2 passes through outside oil circuit
It is connected with excavator control oil Pi2；The interface T2 is connected with oil return inlet T；
The second guiding valve 25 is provided with second piston chamber 28；Second guiding valve 25 includes the second slide valve lever 2501, second
Slide valve spring 2502, the second left sealing cap 2503 and the second right aling cap 2504；Second slide valve lever 2501 is inserted in described second
In piston chamber 28, the left and right two ends of second piston chamber 28 are respectively by the right aling cap 2504 of second left sealing cap 2503 and second
Closing, so as to second slide valve lever 2501 is closed within the valve body 1；Second slide valve spring 2502 is located at described
In the inner chamber of the second left sealing cap 2503, for causing that the second slide valve lever 2501 resets to the right after being moved to the left；Second guiding valve
The right-hand member of bar 2501 is inserted into the inner chamber of second right aling cap 2504, and the inner chamber of second right aling cap 2504 passes through interface
Pia2 is connected with excavator control oil Pi2.
As shown in figure 5, when controlling oil Pi2 to provide pressure oil, when pressure reaches 0.5MPa, i.e. Pia2 pressure reaches
0.5MPa, the second logic control valve element of the second logical valve control valve is pushed to and moves down, and the second logic control valve element flows the 5th
Road and the 6th runner are cut off, and the 6th runner and oil return T are connected, i.e. the second logical valve lower chamber 3002 of the second logical valve is pressed
Power is that the second logical valve is pressed to and moved down by 0, P2 mouthfuls of (P2, P3, P4 are parallel interfaces, are connected to the memory that recovers energy) pressure oil,
Second logic spool of the second logical valve is moved down so that the second logical valve opening, makes P2 mouthfuls to pass through the second logical valve upper cavity 3001
It is connected with the 7th runner.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
7th runner is communicated with the 4th runner, pressure current from external energy storage device 23 through P2 mouthfuls to the 7th runner, then to the 4th stream
Road, the second check valve pushed open between P2 and P1 enters into P1 mouthfuls, and the energy of recovery is discharged again makes in the big arm cylinder of digging machine
Rise, it is achieved thereby that the recycling for recovering energy, has saved the energy, improve the environmental-protecting performance of excavator work.
A second hydraulic fluid port A2 is additionally provided with the valve body 1.A2 mouthfuls is standby hydraulic fluid port, is in parallel with A1 mouthfuls, in work
A1 is any with A2 mouthfuls when making selects first, facilitating connecting line, another sealed in external is stifled to be closed.
General principle of the invention, principal character and advantages of the present invention has been shown and described above.The technology of the industry
Personnel it should be appreciated that the present invention is not limited to the above embodiments, the simply present invention described in above-described embodiment and specification
Principle, various changes and modifications of the present invention are possible without departing from the spirit and scope of the present invention, these change and
Improvement is both fallen within the range of claimed invention.The protection domain of application claims by appending claims and its
Equivalent is defined.
Claims (6)
1. it is a kind of for excavator energy regenerating with recycle and can antioverloading pile-up valve, it is characterized in that, including valve body (1),
The first hydraulic fluid port A1, first pressure mouthful P1, second pressure mouthful P2, the 3rd pressure port P3 are provided with the valve body (1)；Described first
Hydraulic fluid port A1 is connected by the first outside oil circuit (22) of pile-up valve with the second pressure mouthful P2, at the second pressure mouthful P2
It is provided with first check valve (2) so that the hydraulic oil at the first hydraulic fluid port A1 can be by first outside oil circuit
(22) second pressure described in single flow direction mouthful P2；In pile-up valve between the first pressure mouthful P1 and the second pressure mouthful P2
Second check valve (3) is also provided with portion's oil circuit so that the hydraulic oil when energy discharges is merely able to from second pressure mouthful
P2 single flow directions first pressure mouthful P1；
The first pressure mouthful P1 is connected with oil cylinder of big arm of digger (4), and the first pressure mouthful P1 is supplied to big arm cylinder (4)
Large arm rises when oily, and large arm declines during the first pressure mouthful P1 oil returns；The inside that the second pressure mouthful P2 passes through pile-up valve
Oil circuit is connected with the 3rd pressure port P3, and the 3rd pressure port P3 is connected with an external energy storage device (23)
Connect；
The first piston chamber (5) and the first logic valve pocke (6), first piston chamber (5) and first are provided with the valve body (1)
It is connected by the first oil duct (8) between logic valve pocke (6)；The internal galleries that first logic valve pocke (6) passes through pile-up valve
It is connected with the first pressure mouthful P1, the first logical valve (20) is arranged in first logic valve pocke (6), for controlling
State the break-make between first pressure mouthful P1 and first oil duct (8)；First logical valve (20) includes the first logic spool
And the first logic valve spring (2002) (2001)；First logic spool (2001) is arranged in first logic valve pocke (6), the
One logic valve spring (2002) is located at first logic spool (2001) lower section, the first logic valve spring (2002) lower section
Closed by a plug screw；
First logic valve pocke (6) also passes through the second oil duct (9) and the 3rd oil duct (10) and is arranged at first outward of valve body (1)
Logic control valve (7) is connected；The first logic control valve (7) includes the first logic control valve body (701), the first logic control
Valve element (702) processed, the first logic control valve spring (703), interface Pib1, interface T1；The first logic control valve body (701)
It is fixed on the valve body (1), is provided with the first logic control valve pocket (704) in the first logic control valve body (701), described the
One logic control valve element (702), the first logic control valve spring (703) may be contained within the first logic control valve pocket (704)
Interior, the first logic control valve pocket (704) is connected by the second logic control oil duct (705) with second oil duct (9),
The first logic control valve pocket (704) is connected by the 3rd logic control oil duct (706) with the 3rd oil duct (10)；Institute
The first logic control valve element (702) is stated for controlling the second logic control oil duct (705) and the 3rd logic control oil duct
(706) break-make between；The interface Pib1 controls oil Pi1 to be connected by outside oil circuit and excavator；The interface T1 with
Oil return inlet T is connected；
The first guiding valve (24) is provided with first piston chamber (5)；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)；First slide valve lever
(2401) it is inserted in first piston chamber (5), the left and right two ends of first piston chamber (5) are respectively by the described first left envelope
Lid (2403) and the first right aling cap (2404) close so that by first slide valve lever (2401) be closed in the valve body (1) it
It is interior；First slide valve spring (2402) in the inner chamber of first left sealing cap (2403), for cause the first slide valve lever
(2401) resetted to the right after being moved to the left；The right-hand member of first slide valve lever (2401) is inserted into first right aling cap (2404)
Inner chamber in, the inner chamber of first right aling cap (2404) controls oil Pi1 to be connected by interface Pia1 with excavator；
An overload valve pocket is provided with the valve body, an overload valve is provided with the overload valve pocket.
2. it is according to claim 1 it is a kind of for excavator energy regenerating with recycle and can antioverloading pile-up valve, its
It is characterized in that the internal oil passages between overload valve pocket (26) and the 3rd pressure port P3 and the second pressure mouthful P2 are connected
Logical, overload valve pocket (26) is also connected with oil return inlet T, and the 3rd pressure port P3 and institute are controlled by the overload valve (27)
State the break-make between the internal oil passages and the oil return inlet T between second pressure mouthful P2；The gravitational potential when big arm of digger declines
When can be excessive, the high pressure oil pressure that energy conversion device (18) is produced be excessive, may damage whole energy-recuperation system；So
During decline, once the high pressure oil pressure for being converted exceedes overload valve sets pressure, hydraulic oil is by second pressure mouthful P2
During to the 3rd pressure port P3, the overload valve between second pressure mouthful P2 and the 3rd pressure port P3 is opened, by the pressure control of hydraulic oil
System is in setting safe range, it is ensured that the safety of whole system.
3. it is according to claim 2 it is a kind of for excavator energy regenerating with recycle and can antioverloading pile-up valve, its
It is characterized in that the 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)；
Main valve housing (2701) lower end is provided with overload valve pressure port (2707), the overload valve pressure port (2707) with it is described
It is connected between second pressure mouthful P2；Main valve plug (2702) and conical valve base are provided with the inner chamber of the main valve housing (2701)
(2704), top of the conical valve base (2704) positioned at the main valve plug (2702)；On the outer peripheral face of the main valve housing (2701)
Overload valve oil return inlet T 3 is provided with, the overload valve oil return inlet T 3 is with the main valve housing (2701) inner chamber positioned at main valve plug
(2702) the part cavity below is communicated；
Main valve plug (2702) top is provided with main valve plug groove (2708), is opened up below the main valve plug groove (2708)
There is the first damping hole (2709), first damping hole (2709) axially penetrates through the main valve along the main valve plug (2702)
Core (2702), passes through first damping hole between the main valve plug groove (2708) and the overload valve pressure port (2707)
(2709) it is connected；The lower end of the main spool spring (2703) be located at the main valve plug groove (2708) in and with the main valve plug
The bottom land of groove (2708) is abutted against, and upper end and the lower surface of the conical valve base (2704) of the main spool spring (2703) offset
Connect；The rank for axially penetrating through the conical valve base (2704) along the conical valve base (2704) is provided with the conical valve base (2704)
Terraced hole (2711), the lower end of the poppet valve core (2705) is inserted within shoulder hole (2711) epimere, the shoulder hole
(2711) hypomere is the second damping hole (2710), and the shoulder hole (2711) is by second damping hole (2710) and cone valve
Main valve housing (2701) inner chamber below core (2705) is connected with the main valve plug groove (2708)；Described sleeve pipe (17) is sheathed on
On the outer peripheral face of the epimere of the main valve housing (2701), in the outer peripheral face of described sleeve pipe (17) inwall with the main valve housing (2701)
Between be formed with the first oil back chamber (2712) and the second oil back chamber (2713)；The upper end of the poppet valve core (2705) is located at the set
Manage in the inner chamber of (17), cone valve spring (2706) is provided with the poppet valve core (2705), under the pressure regulating screw (16)
End is threaded into the inner chamber epimere of the described sleeve pipe (17), the upper end of the cone valve spring (2706) and the pressure regulating screw
(16) lower end abuts against；First oil back chamber (2712) and the intracavity inter-connection of described sleeve pipe (17), second oil return
Chamber (2713) is connected with the overload valve oil return inlet T 3；The overload valve oil return inlet T 3 is connected with the oil return inlet T of valve body (1)
It is logical.
4. it is according to claim 3 it is a kind of for excavator energy regenerating with recycle and can antioverloading pile-up valve, its
It is characterized in that a nut (15) is provided with the top of described sleeve pipe (17), the nut (15) and the pressure regulating screw (16)
Between by screw thread coordinate in the way of be connected；Ladder shape sealing ring (19) is provided between the nut and described sleeve pipe (17).
5. it is according to claim 1 it is a kind of for excavator energy regenerating with recycle and can antioverloading pile-up valve, its
It is characterized in be provided with the second piston chamber (28), the second unidirectional valve pocket (29) and the second logic valve pocke (30) in the valve body (1),
It is connected by the 7th oil duct (14) between second piston chamber (28) and the second logic valve pocke (30)；Second piston chamber
(28) it is connected by the 4th oil duct (11) and the second unidirectional valve pocket (29) between；
It is provided with the second unidirectional valve pocket (29) for controlling between the second unidirectional valve pocket (29) and the 4th oil duct (11)
Second check valve (3) of break-make, second check valve (3) includes the second nonreturn valve core (301), the second one-way valve spring
And the second check valve plug screw (303) (302)；Be isolated into for described second unidirectional valve pocket (29) by second nonreturn valve core (301)
Second check valve upper cavity (2901) and the second check valve lower chamber (2902), the second check valve upper cavity (2901) and the
One pressure port P1 is connected；When the second nonreturn valve core (301) is moved down, the 4th oil duct (11) is single by described second
It is connected with the first pressure mouthful P1 to valve upper cavity (2901)；The second check valve plug screw (303) is arranged at described
In the outlet of two unidirectional valve pockets (29), by the outlet envelope below the second check valve lower chamber (2902) of the second unidirectional valve pocket (29)
Close；Second one-way valve spring (302) is between second nonreturn valve core (301) and the second check valve plug screw (303)；
It is provided with second logic valve pocke (30) for controlling between the second logic valve pocke (30) and the 7th oil duct (14)
Second logical valve (21) of break-make；Second logical valve (21) includes the second logic spool (2101), the second logic valve spring
And the second logical valve plug screw (2103) (2102)；Second logic spool (2101) isolates second logic valve pocke (30)
Into the second logical valve upper cavity (3001) and the second logical valve lower chamber (3002), the second logical valve upper cavity (3001) is led to
The internal galleries for crossing pile-up valve are connected with second pressure mouthful P2；When the second logic spool (2101) is moved down, described
Seven oil ducts (14) are connected by the second logical valve upper cavity (3001) with the second pressure mouthful P2；Second logic
Valve plug screw (2103) is arranged in the outlet of second logic valve pocke (30), and the outlet of the second logic valve pocke (30) is closed；
The second logic valve spring (2102) is between second logic spool (2101) and the second logical valve plug screw (2103)；
The second logical valve upper cavity (3001) is connected with the 5th oil duct (12), and the second logical valve lower chamber (3002) is oily with the 6th
Road (13) is connected；
Second logic control valve (31) includes the second logic control valve body (3101), the second logic control valve element (3102), second
Logic control valve spring (3103), interface Pib2, interface T2；The second logic control valve body (3101) is fixed on the valve body
(1) on, the second logic control valve pocket (3104), the second logic control valve are provided with the second logic control valve body (3101)
Core (3102), the second logic control valve spring (3103) may be contained within the second logic control valve pocket (3104)；Described
Two logic control valve pockets (3104) are connected by the 5th logic control oil duct (3105) with the 5th oil duct (12), and described
Two logic control valve pockets (3104) are connected by the 6th logic control oil duct (3106) with the 6th oil duct (13)；Described
Two logic control valve elements (3102) are for controlling the 5th logic control oil duct (3105) and the 6th logic control oil duct
(3106) break-make between；The interface Pib2 controls oil Pi2 to be connected by outside oil circuit and excavator；The interface T2 with
Oil return inlet T is connected；
The second guiding valve (25) is provided with second piston chamber (28)；Second guiding valve (25) including the second slide valve lever (2501),
Second slide valve spring (2502), the second left sealing cap (2503) and the second right aling cap (2504)；Second slide valve lever (2501) is inserted
Enter in second piston chamber (28), the left and right two ends of second piston chamber (28) are respectively by second left sealing cap
(2503) closed with the second right aling cap (2504), so as to second slide valve lever (2501) is closed within the valve body (1)；
Second slide valve spring (2502) in the inner chamber of second left sealing cap (2503), for cause the second slide valve lever
(2501) resetted to the right after being moved to the left；The right-hand member of second slide valve lever (2501) is inserted into second right aling cap (2504)
Inner chamber in, the inner chamber of second right aling cap (2504) controls oil Pi2 to be connected by interface Pia2 with excavator.
6. it is according to claim 1 it is a kind of for excavator energy regenerating with recycle and can antioverloading pile-up valve, its
It is characterized in that a second hydraulic fluid port A2 is additionally provided with the valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410410090.1A CN104314904B (en) | 2014-08-19 | 2014-08-19 | Integrated valve for energy recovery and reuse of excavator and capable of preventing overload |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410410090.1A CN104314904B (en) | 2014-08-19 | 2014-08-19 | Integrated valve for energy recovery and reuse of excavator and capable of preventing overload |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104314904A CN104314904A (en) | 2015-01-28 |
| CN104314904B true CN104314904B (en) | 2017-05-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410410090.1A Active CN104314904B (en) | 2014-08-19 | 2014-08-19 | Integrated valve for energy recovery and reuse of excavator and capable of preventing overload |
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| Country | Link |
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| CN (1) | CN104314904B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114060341B (en) * | 2021-12-01 | 2024-06-04 | 徐工集团工程机械股份有限公司 | Regeneration valve, multi-way valve, hydraulic system and engineering machinery |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08158411A (en) * | 1994-12-07 | 1996-06-18 | Shin Caterpillar Mitsubishi Ltd | Hydraulic circuit |
| JP5574375B2 (en) * | 2010-06-30 | 2014-08-20 | キャタピラー エス エー アール エル | Energy regeneration control circuit and work machine |
| CN102758813B (en) * | 2012-08-01 | 2014-12-31 | 三一重工股份有限公司 | Energy-recovery hydraulic system and engineering machinery |
| CN104254066B (en) * | 2013-06-28 | 2019-05-28 | 华为技术有限公司 | Status information transmitting, deactivated method, site apparatus and terminal device |
| CN204041606U (en) * | 2014-08-19 | 2014-12-24 | 合肥长源液压股份有限公司 | A kind of be used for excavator energy regenerating and recycling and can antioverloading integrated valve |
| CN203978982U (en) * | 2014-08-19 | 2014-12-03 | 合肥长源液压股份有限公司 | A kind of integrated valve reclaiming for excavator energy |
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2014
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Also Published As
| Publication number | Publication date |
|---|---|
| CN104314904A (en) | 2015-01-28 |
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