CN104314904A - 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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- CN104314904A CN104314904A CN201410410090.1A CN201410410090A CN104314904A CN 104314904 A CN104314904 A CN 104314904A CN 201410410090 A CN201410410090 A CN 201410410090A CN 104314904 A CN104314904 A CN 104314904A
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- Prior art keywords
- valve
- oil
- logic control
- pressure port
- logic
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- 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
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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
- 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
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
The present invention relates to a kind of integrated valve, be especially a kind ofly used for excavator energy regenerating and recycling and can antioverloading integrated valve.
Background technique
Excavator, also known as excavation machinery (excavating machinery), is excavate higher or lower than the material holding machine side with scraper bowl, and loads haulage vehicle or unload the earth moving machinery to stocking yard.Material mainly soil, coal, silt and the Soil and Rock after pre-pine that excavator excavates.From the development of engineering machinery in recent years, the development of excavator is relatively very fast, and excavator has become one of topmost engineering machinery in engineering construction.What excavator now accounted for the overwhelming majority is all-hydraulic all-rotation excavator.The Hydraulic Power Transmission System of excavator by oil hydraulic pump by the transmission of power of motor to the executive component such as oil hydraulic motor, oil hydraulic cylinder, push the work forward device action, thus complete various operation.
In the course of the work, its large arm frequently declines and rises excavator.In the working procedure of excavator, a kind of situation is had to be do not need consumption of engine power, when namely large arm falls from high to low.In the process that big arm of digger declines, its potential energy is also by reducing greatly, and these energy have also been wasted.At present, excavator there is no the special energy recycle device of outfit.
Application number is that the Chinese utility model patent of CN201320587141.9 discloses a kind of big arm of digger energy regenerating device with potential energy recovery device, comprise large arm and the master cylinder being fixed on large arm both sides, master cylinder is communicated with fuel tank by solenoid valve group, fluid force-transmitting mechanism is hinged with between described large arm and frame, fluid force-transmitting mechanism is between two master cylinders, fluid force-transmitting mechanism connects accumulator by pipeline, the hidden inside being fixed on large arm of accumulator.Although the energy-recuperation system of this model utility to excavator is introduced, there is not the introduction of the special valve about excavator energy regenerating.
Summary of the invention
The present invention is for avoiding the deficiency that exists in above-mentioned prior art, there is provided a kind of for excavator energy regenerating and recycling and can antioverloading integrated valve, gravitational potential energy recovery when declining to make big arm of digger also discharges and utilizes the potential energy of recovery, makes excavator operationally more energy-conservation in large arm uphill process.
The present invention be technical solution problem by the following technical solutions.
A kind of be used for excavator energy regenerating and recycling and can antioverloading integrated valve, its structural feature comprises valve body, described 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; Described first hydraulic fluid port A1 is connected with described second pressure port P2 by the first outside oil circuit of integrated valve, described second pressure port P2 place is provided with first one-way valve, makes the hydraulic oil at described first hydraulic fluid port A1 place can through the second pressure port P2 described in described outside oil circuit single flow direction; Integrated valve internal oil passages between described first pressure port P1 and described second pressure port P2 is also provided with second one-way valve, makes the hydraulic oil when fault offset be 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, and described first pressure port P1 rises to large arm during big arm cylinder fuel feeding, 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 integrated valve, and described 3rd pressure port P3 is connected with an external energy storage device;
Be provided with the first piston chamber and the first logic valve pocket in described valve body, be connected by the first oil duct between described first piston chamber and the first logic valve pocket; Described first logic valve pocket is connected with described first pressure port P1 by the internal galleries of integrated valve, and described first logical valve is arranged in described first logic valve pocket, for controlling the break-make between described first pressure port P1 and described first oil duct; First logical valve comprises the first logic spool and the first logical valve spring; First logic spool is arranged in described first logic valve pocket, and the first logical valve spring is located at below described first logic spool, is closed below described first logical valve spring by a plug screw;
Described first logic valve pocket is also connected with the first logic control valve be arranged at outside valve body with the 3rd oil duct by the second oil duct; Described first logic control valve comprises 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, the first logic control valve pocket is provided with in first logic control valve body, described first logic control spool, the first logic control valve spring are all arranged in described first logic control valve pocket, and described first logic control valve pocket is by being connected with the 3rd oil duct with described second oil duct with the 3rd logic control oil duct respectively by the second logic control oil duct; Described first logic control spool is for controlling the break-make between described second logic control oil duct and the 3rd logic control oil duct; Described interface Pib1 controls oily Pi1 by outside oil circuit and excavator and is connected; Described interface T1 is connected with oil return inlet T;
The first guiding valve is provided with in described first piston chamber; Described first guiding valve comprises the first slide valve lever, the first slide valve spring, the first left sealing cap and the first right aling cap; Described first slide valve lever is inserted in described first piston chamber, and the two ends, left and right of described first piston chamber are closed by described first left sealing cap and the first right aling cap respectively, thus are closed within described valve body by described first slide valve lever; Described first slide valve spring is arranged in the inner chamber of described first left sealing cap, is provided for after the first slide valve lever is moved to the left and resets to the right; 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 controls oily Pi1 by interface Pia1 with excavator and is connected.
Of the present inventionly a kind ofly can the structural feature of antioverloading integrated valve to be also for excavator energy regenerating and recycling:
Be provided with an overload valve pocket in described valve body, in described overload valve pocket, be provided with an overload valve; Described overload valve pocket is connected with the internal oil passages between described second pressure port P2 with described 3rd pressure port P3, described overload valve pocket is also connected with oil return inlet T, by the break-make between the internal oil passages between described overload valve control described 3rd pressure port P3 and described second pressure port P2 and described oil return inlet T.
Described overload valve comprises main valve housing, main valve plug, main spool spring, conical valve base, poppet valve core, cone valve spring, sleeve pipe and pressure regulating screw;
Described main valve housing lower end is provided with overload valve pressure port, is connected between described overload valve pressure port with described second pressure port P2; Be provided with main valve plug and conical valve base in the inner chamber of described main valve housing, described conical valve base is positioned at the top of described main valve plug; The outer circumferential face of described main valve housing is provided with overload valve oil return inlet T 3, described overload valve oil return inlet T 3 communicates with the part cavity be positioned at below main valve plug of described main valve housing inner chamber;
Described main valve plug top is provided with main valve plug groove, the below of described main valve plug groove offers the first damping hole, described first damping hole runs through described main valve plug along the axis of described main valve plug, is connected between described main valve plug groove with described overload valve pressure port by described first damping hole; The lower end of described main spool spring is positioned at described main valve plug groove and abuts against with the bottom land of described main valve plug groove, and the upper end of described main spool spring and the lower end surface of described conical valve base abut against; The axial shoulder hole through described conical valve base along described conical valve base is arranged in described conical valve base, the lower end of described poppet valve core is inserted within described shoulder hole epimere, the hypomere of described shoulder hole is the second damping hole, and described shoulder hole is connected with described main valve plug groove with the main valve housing inner chamber below poppet valve core by described second damping hole; Described casing pipe sleeve is located on the outer circumferential face of the epimere of described main valve housing, is formed with the first oil back chamber and the second oil back chamber between described internal surface of sleeve pipe and the outer circumferential face of described main valve housing; The upper end of described poppet valve core is arranged in the inner chamber of described sleeve pipe, cone valve spring is provided with on described poppet valve core, the lower end of described pressure regulating screw is threaded in the inner chamber epimere of described sleeve pipe, and the upper end of described cone valve spring and the lower end of described pressure regulating screw abut against; The intracavity inter-connection of described first oil back chamber and described sleeve pipe, described second oil back chamber 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.
The top of described sleeve pipe is provided with a nut, the mode with screw-thread fit between described nut with described pressure regulating screw is connected; Stepped shaft seal ring is provided with between described nut and described sleeve pipe.
Be provided with the second piston chamber, the second unidirectional valve pocket and the second logic valve pocket in described valve body, be connected by the 7th oil duct between described second piston chamber and the second logic valve pocket; Be connected by the 4th oil duct between described second piston chamber and the second unidirectional valve pocket;
Be provided with the second one-way valve for controlling the break-make between the second unidirectional valve pocket and the 4th oil duct in described second unidirectional valve pocket, described second one-way valve comprises the second nonreturn valve core, the second check valve spring and the second one-way valve plug screw; Described second unidirectional valve pocket is isolated into the second one-way valve upper cavity and the second one-way valve lower chamber by described second nonreturn valve core, and described second one-way valve upper cavity is connected with the first pressure port P1; When the second nonreturn valve core moves down, described 4th oil duct is connected with described first pressure port P1 by described second one-way valve upper cavity; Described second one-way valve plug screw is arranged in the outlet of described second unidirectional valve pocket, the outlet below the second one-way valve lower chamber of the second unidirectional valve pocket is closed; Described second check valve spring is between described second nonreturn valve core and the second one-way valve plug screw;
The second logical valve for controlling the break-make between the second logic valve pocket and the 7th oil duct is provided with in described second logic valve pocket; Described second logical valve comprises the second logic spool, the second logical valve spring and the second logical valve plug screw; Described second logic valve pocket is isolated into the second logical valve upper cavity and the second logical valve lower chamber by described second logic spool, and described second logical valve upper cavity is connected with the second pressure port P2 by the internal galleries of integrated valve; When the second logic spool moves down, 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 in the outlet of described second logic valve pocket, the outlet of the second logic valve pocket is closed; Described second logical valve spring is between described second logic spool and the second logical valve plug screw; Described second logical valve upper cavity is connected with the 5th oil duct, and the second logical valve lower chamber is connected with the 6th oil duct;
Second logic control valve comprises the second logic control valve body, the second logic control spool, the second logic control valve spring, interface Pib2, interface T2; Described second logic control valve body is fixed on described valve body, is provided with the second logic control valve pocket in the second logic control valve body, and described second logic control spool, the second logic control valve spring are all arranged in described second logic control valve pocket; Described second logic control valve pocket is by being connected with the 6th oil duct with described 5th oil duct with the 6th logic control oil duct respectively by the 5th logic control oil duct; Described second logic control spool is for controlling the break-make between described 5th logic control oil duct and the 6th logic control oil duct; Described interface Pib2 controls oily Pi2 by outside oil circuit and excavator and is connected; Described interface T2 is connected with oil return inlet T;
Described second piston chamber is arranged at the second guiding valve; Second guiding valve comprises the second slide valve lever, the second slide valve spring, the second left sealing cap and the second right aling cap; Described second slide valve lever is inserted in described second piston chamber, and the two ends, left and right of described second piston chamber are closed by described second left sealing cap and the second right aling cap respectively, thus are closed within described valve body by described second slide valve lever; Described second slide valve spring is arranged in the inner chamber of described second left sealing cap, is provided for after the second slide valve lever is moved to the left and resets to the right; The right-hand member of described second slide valve lever is inserted in the inner chamber of described second right aling cap, and the inner chamber of described second right aling cap controls oily Pi2 by interface Pia2 with excavator and is connected.
Described valve body is also provided with a second hydraulic fluid port A2.
Compared with the prior art, beneficial effect of the present invention is embodied in:
One of the present invention is used for excavator energy regenerating and recycling and can antioverloading integrated valve, is connected, thus P1 mouth and A1 mouth are connected by controlling the oily A1 mouth that makes by the first piston chamber and the first oil duct.A1 mouth connects outside energy conversion device, potential energy when being declined by oil cylinder becomes high pressure oil to enter in integrated valve of the present invention by P2 mouth, enter external energy storage device by P3 mouth again, thus stored energy is got up, realize the object of the energy regenerating declined by big arm of digger.Between the P1 mouth that first logical valve is located at decline energy regenerating oil circuit and A1 mouth; Between the first logical valve and A1 mouth, be provided with the first guiding valve, changed the displacement of the first guiding valve by the pressure size controlling oil, thus change the openings of sizes between the first logical valve and A1 mouth, reach flow when controlling decline energy regenerating.
P2 mouth arranges overload valve, overload pressure too high damage external energy storage device when preventing energy regenerating.
By controlling oil, the 5th runner and the 6th runner are cut off, and the 6th runner and oil return T are connected, namely the second logical valve lower chamber pressure of the second logical valve is 0, second logical valve presses to and moves down by P2 mouth pressure oil, second logic spool of the second logical valve moves down and the second logical valve is opened, and P2 mouth is connected with the 7th runner by the second logical valve upper cavity.When Pi2 pressure is greater than 0.7MPa, namely Pia2 pressure is greater than 0.7MPa, second guiding valve is pushed to a left side, 7th runner is communicated with the 4th runner, pressure flow from external energy storage device 23 through P2 mouth to the 7th runner, then to the 4th runner, the second one-way valve pushed open between P2 and P1 enters into P1 mouth, the energy of recovery is discharged again and makes the big arm cylinder of digging machine increase, thus achieve the recycling of recovered energy.
Be provided with the second guiding valve between the second logical valve and P1 mouth, changed the displacement of guiding valve by the pressure size controlling oil, thus change the openings of sizes between the second logical valve and P1 mouth, reach flow when controlling elevation energy release.Second logical valve is located between the elevation energy release P2 mouth of oil circuit and P1 mouth, and between P1 mouth and P2 mouth, increases by the second one-way valve prevent P1 mouth pressure oil from flowing into P2 mouth.
One of the present invention is used for excavator energy regenerating and recycling and can antioverloading integrated valve, has energy when recyclable big arm of digger declines, can prevent recovered energy excessive damage external energy storage device and can re-use the advantages such as the energy of recovery, functional reliability are good, energy saving when big arm of digger rises.
Accompanying drawing explanation
Fig. 1 is of the present invention a kind of for excavator energy regenerating and recycling and can the plan view of antioverloading integrated valve.
Fig. 2 is of the present invention a kind of for excavator energy regenerating and recycling and can the plan view of antioverloading integrated valve.
Fig. 3 is of the present invention a kind of for excavator energy regenerating and recycling and can the left view of antioverloading integrated valve.
Fig. 4 is of the present invention a kind of for excavator energy regenerating and recycling and can the hydraulic schematic diagram of antioverloading integrated valve.
Fig. 5 is the A-A sectional view (sectional view of the second logical valve of the present invention, the second guiding valve and the second logic control valve) in Fig. 2.
Fig. 6 is the B-B sectional view (sectional view of the first logical valve of the present invention, the first guiding valve and the first logic control valve) in Fig. 2.
B-B sectional view when Fig. 7 is energy regenerating in Fig. 2.
A-A sectional view when Fig. 8 is fault offset in Fig. 2.
Fig. 9 is the partial view (overload valve does not transship, 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 structural drawing of the overload valve in Fig. 9 and 10.
Label in accompanying drawing 1 ~ accompanying drawing 11: 1 valve body, 2 first one-way valves, 3 second one-way valves, 301 second nonreturn valve cores, 302 second check valve springs, 303 second one-way valve plug screws, 4 big arm cylinders, 5 first piston chambers, 6 first logic valve pockets, 7 first logic control valves, 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 second 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 screws, 17 sleeve pipes, 18 energy conversion devices, 19 stepped shaft seal rings, 20 first logical valves, 2001 first logic spools, 2002 first logical valve springs, 21 second logical valves, 2101 second logic spools, 2102 second logical valve springs, 2103 second logical valve plug screws, 22 first outside oil circuits, 23 external energy storage devices, 24 first guiding valves, 2401 first slide valve levers, 2402 first slide valve springs, 2403 first left sealing caps, 2404 first right aling caps, 25 second guiding valves, 2501 second slide valve levers, 2502 second slide valve springs, 2503 second left sealing caps, 2504 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 port, 2708 main valve plug grooves, 2709 first damping holes, 2710 second damping holes, 2711 shoulder holes, 2712 first oil back chambers, 2713 second oil back chambers, 28 second piston chambers, 29 second unidirectional valve pockets, 2901 second one-way valve upper cavities, 2902 second one-way valve lower chambers, 30 second logic valve pockets, 3001 second logical valve upper cavities, 3002 second logical valve lower chambers, 31 second logic control valves, 3101 second logic control valve bodies, 3102 second logic control spools, 3103 second logic control valve springs, 3104 second logic control valve pockets, 3105 the 5th logic control oil ducts, 3105 the 6th logic control oil ducts.
Below by way of embodiment, and the invention will be further described by reference to the accompanying drawings.
Embodiment
See accompanying drawing 1 ~ accompanying drawing 11, one of the present invention is used for excavator energy regenerating and recycling and can antioverloading integrated valve, comprises 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 outside oil circuit 22 of integrated valve, described second pressure port P2 place is provided with first one-way valve 2, makes the hydraulic oil at described first hydraulic fluid port A1 place can through the second pressure port P2 described in described outside oil circuit single flow direction; Integrated valve internal oil passages between described first pressure port P1 and described second pressure port P2 is also provided with second one-way valve 3, makes the hydraulic oil when fault offset be 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 rises to large arm during big arm cylinder 4 fuel feeding, 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 integrated valve, and described 3rd pressure port P3 is connected with an external energy storage device 23;
Be provided with the first piston chamber 5 and the first logic valve pocket 6 in described valve body 1, be 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 integrated valve, and described first logical valve 20 is arranged in described first logic valve pocket 6, for controlling the break-make between described first pressure port P1 and described first oil duct 8; First logical valve 20 comprises 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, and the first logical valve spring 2002 is located at below described first logic spool 2001, is closed below described first logical valve spring 2002 by a plug screw;
Described first logic valve pocket 6 is also connected with the first logic control valve 7 be arranged at outside valve body 1 with the 3rd oil duct 10 by the second oil duct 9; Described first logic control valve 7 comprises the first logic control valve body 701, first logic control spool 702, 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 is provided with in first logic control valve body 701, described first logic control spool 702, first logic control valve spring 703 is all arranged in described first logic control valve pocket 704, and described first logic control valve pocket 704 is by being connected with the 3rd oil duct 10 with described second oil duct 9 with the 3rd logic control oil duct 706 respectively by the second logic control oil duct 705; Described first logic control spool 702 is 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 oily Pi1 by outside oil circuit and excavator and is connected; Described interface T1 is connected with oil return inlet T;
The first guiding valve 24 is provided with in described first piston chamber 5; Described first guiding valve 24 comprises the first slide valve lever 2401, first slide valve spring 2402, 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, and 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 are closed within described valve body 1 by described first slide valve lever 2401; Described first slide valve spring 2402 is arranged in the inner chamber of described first left sealing cap 2403, is provided for after the first slide valve lever 2401 is moved to the left and resets to the right; 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 oily Pi1 by interface Pia1 with excavator and is connected.
If Fig. 1-3 is of the present invention a kind of for excavator energy regenerating and recycling and can the outline drawing of antioverloading integrated valve.Also be provided with the second logical valve and the second logic control valve in integrated valve, be provided for the hydraulic oil that external energy storage device reclaims and reuse, provide the pressure energy for big arm of digger rises.Fig. 4 is the hydraulic schematic diagram of integrated valve.Fig. 5 and Fig. 6 is respectively A-A sectional view in Fig. 2 and B-B sectional view, can find out the internal structure of the first logical valve and the second logical valve respectively.Oil return inlet T is the return opening of integrated valve, is connected with the oil sump tank of outside.Fig. 6 is the structural drawing of the first logical valve, the first guiding valve and the first logic control valve, realizes energy recovery function when integrated valve falls to the big arm cylinder of excavator by parts such as the first logical valve, the first guiding valve and the first logic control valves.Fig. 5 is the structural drawing of the second logical valve, the second guiding valve and the second logic control valve, when being realized the big arm cylinder rising of excavator by parts such as the second logical valve, the second guiding valve and the second logic control valves, again discharging reclaiming the energy stored, helping big arm cylinder to rise, thus energy saving.
Fig. 7 is the figure after the action of the first logical valve, the first guiding valve and the first logic control valve when can reclaim in Fig. 6.Now, the second logical valve in Fig. 5, the second guiding valve and the second logic control valve attonity, the second logical valve, the second guiding valve are closed condition, noenergy release movement.
Figure after the action of the second logical valve when Fig. 8 is fault offset in Fig. 5, the second guiding valve and the second logic control valve.Now, the first logical valve in Fig. 6, the first guiding valve and the first logic control valve attonity, the first logical valve, the first guiding valve are closed, and noenergy reclaims action.
Fig. 9 is in energy recovery process, structural drawing when overload valve does not transship, and overload valve is in closed condition, No-mistake Principle protection act.Figure 10 is in energy recovery process, and structural drawing 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.
Of the present invention a kind of for excavator energy regenerating and recycling and can the energy recovery process of antioverloading integrated valve as follows.
In oil cylinder of big arm of digger decline process, from the B-B sectional view of Fig. 4 hydraulic schematic diagram and Fig. 6, interface Pia1 and Pib1 is parallel to together by exterior line, and connecting excavator controls oily Pi1.Pia2 and Pib2 is parallel to together by exterior line, and connecting excavator controls oily Pi2.When oil circuit control Pi1 provides pressure oil, oil cylinder of big arm of digger declines; When Pi2 provides pressure oil, oil cylinder of big arm of digger rises.When Pi1 provides pressure, when pressure reaches 0.5MPa, namely Pib1 reaches 0.5Mpa, first logic control spool of the first logical valve control valve is pressed towards the first logic control valve spring, oil circuit between second logic control oil duct 705 and the 3rd logic control oil duct 706 cuts off by the first logic control spool, and is connected by interface T1 and oil return inlet T by the 3rd logic control oil duct 706; Now, the 3rd logic control oil duct 706 communicates with the 3rd oil duct 10.
First logic valve pocket is divided into ante-chamber and back cavity two cavitys by the first logic spool; Be positioned at above the first logic spool for ante-chamber, being positioned at below the first logic spool is back cavity; Wherein, this ante-chamber communicates with the first pressure port P1.Because the second oil duct 9 and the 3rd oil duct 10 are connected with the back cavity of below with the ante-chamber above the first logic spool respectively, therefore the back cavity of the first logical 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.Ante-chamber above first logic spool and being cut off by described first logic spool between described first oil duct, when the first logic spool declines, ante-chamber and the first oil duct are connected.Because the back cavity of the first logical valve is communicated with return opening, the pressure of the back cavity of the first logical valve is made to be 0, and the ante-chamber above the first logic spool communicates with the first pressure port P1, the first logic spool is pressed downwards by P1 mouth high pressure oil, the first logical valve is opened and P1 mouth and the first oil duct is connected.
When the increase of Pi1 pressure is greater than 0.7MPa, namely Pia1 pressure is greater than 0.7Mpa, and Pia1 pressure oil promotes the first guiding valve and is moved to the left, and A1 mouth is connected by the first piston chamber and the first oil duct, thus P1 mouth and A1 mouth are connected.As shown in Figure 6, owing to adding the second one-way 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 enter P1 mouth by the 4th oil duct provides fault offset to make oil cylinder increase.Energy conversion device 18 is arranged between A1 mouth and P2 mouth.A1 mouth connects outside energy conversion device 18, potential energy when being declined by oil cylinder becomes high pressure oil to enter in integrated valve of the present invention by P2 mouth, enter external energy storage device by P3 mouth again, thus stored energy is got up, realize the object of the energy regenerating declined by big arm of digger.
First guiding valve of integrated valve of the present invention also has flow control function.Flow control process is as follows: when Pi1 pressure is greater than 0.7MPa, after first oil duct and A1 mouth are connected by the first guiding valve, changed between 0.7MPa ~ 3.5MPa by the pressure of control Pi1, different pressures realizes the different thrusts to the first guiding valve, realize the first guiding valve and be in diverse location, thus the openings of sizes controlled between the first oil duct and A1 mouth, final control by the flow of opening to realize the flow control of P1 mouth to A1 mouth, reach and control oil cylinder rate of descent, big arm of digger can slowly be declined, and can not land suddenly and cause having an accident, improve the safety reliability of excavator work.
Be provided with an overload valve pocket 26 in described valve body 1, in described overload valve pocket 26, be provided with an overload valve 27; Described overload valve pocket 26 is connected with the internal oil passages between described second pressure port P2 with described 3rd pressure port P3, described overload valve pocket 26 is also connected with oil return inlet T, controls the break-make between internal oil passages between described 3rd pressure port P3 and described second pressure port P2 and described oil return inlet T by described overload valve 27.When big arm of digger declines, gravitational potential energy is excessive, the high pressure oil pressure that energy conversion device 18 produces is excessive, may damage whole energy-recuperation system.So in decline process, once the high pressure oil pressure transformed exceedes overload valve setting pressure, high pressure oil is through P2 mouth to P3 mouth, and the overload valve between P2 mouth and P3 mouth is opened, by the Stress control of high pressure oil in setting safety range, ensure the safety of whole system.
Described overload valve 27 comprises 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, is connected between described overload valve pressure port 2707 with described second pressure port P2; Be provided with main valve plug 2702 and conical valve base 2704 in the inner chamber of described main valve housing 2701, described conical valve base 2704 is positioned at the top of described main valve plug 2702; The outer circumferential face of described main valve housing 2701 is provided with overload valve oil return inlet T 3, and described overload valve oil return inlet T 3 communicates with the part cavity be positioned at below main valve plug 2702 of described main valve housing 2701 inner chamber;
Described main valve plug 2702 top is provided with main valve plug groove 2708, the below of described main valve plug groove 2708 offers the first damping hole 2709, described first damping hole 2709 runs through described main valve plug 2702 along the axis of described main valve plug 2702, is connected between described main valve plug groove 2708 with described overload valve pressure port 2707 by described first damping hole 2709; The lower end of described main spool spring 2703 is positioned at described main valve plug groove 2708 and abuts against with the bottom land of described main valve plug groove 2708, and the upper end of described main spool spring 2703 and the lower end surface of described conical valve base 2704 abut against; The axial shoulder hole 2711 through described conical valve base 2704 along described conical valve base 2704 is arranged in described conical valve base 2704, the lower end of described poppet valve core 2705 is inserted within described shoulder hole 2711 epimere, the hypomere of described shoulder hole 2711 is the second damping hole 2710, and described shoulder hole 2711 is connected with described main valve plug groove 2708 with main valve housing 2701 inner chamber below poppet valve core 2705 by described second damping hole 2710; Described sleeve pipe 17 is sheathed on the outer circumferential face of the epimere of described main valve housing 2701, is formed with the first oil back chamber 2712 and the second oil back chamber 2713 between described sleeve pipe 17 inwall and the outer circumferential face of described main valve housing 2701; The upper end of described poppet valve core 2705 is arranged in the inner chamber of described sleeve pipe 17, cone valve spring 2706 is provided with on described poppet valve core 2705, the lower end of described pressure regulating screw 16 is threaded in the inner chamber epimere of described sleeve pipe 17, and the upper end of described cone valve spring 2706 and the lower end of described pressure regulating screw 16 abut against; The intracavity inter-connection of described first oil back chamber 2712 and described sleeve pipe 17, described second oil back chamber 2713 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, as Figure 11, comprises the parts such as main valve housing, main valve plug, main spool spring, conical valve base, poppet valve core, cone valve spring, sleeve pipe, nut and pressure regulating screw.Overload valve pressure port below main valve housing is in parallel with the second pressure port P2, and overload valve oil return inlet T 3 is connected with the oil return inlet T of valve body.When P2 mouth pressure transships, pressure oil, through the first damping hole 1, second damping hole 2, arrives the position between poppet valve core and conical valve base, is full of pressure oil in the shoulder hole now in conical valve base.When this place's pressure oil oil pressure overload and reach overload valve set pressure (this set pressure be relevant by the degree compressed to cone valve spring, can be adjusted by pressure regulating screw.) time, pressure oil acts on poppet valve core, promote poppet valve core upwards to move, make to be separated between poppet valve core and conical valve base, the stepped shaft inner chamber of conical valve base is connected with between the first oil back chamber, thus make pressure oil get back to overload valve oil return inlet T 3 by the first oil back chamber, the second oil back chamber successively, and then get back among outside oil sump tank.When described overload valve is installed in described overload 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 communicates with between overload valve oil return inlet T 3.Therefore, communicate 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 the overload valve pressure port place below main valve plug, main valve plug is upwards pushed away by pressure oil, overload valve pressure port is communicated with oil return inlet T, thus can be the unloading of P2 mouth, ensure security of system.
The top of described sleeve pipe 17 is provided with a nut 15, is connected in the mode of screw-thread fit between described nut 15 with described pressure regulating screw 16; Stepped shaft seal ring 19 is provided with between described nut and described sleeve pipe 17.
Be provided with the second piston chamber 28, second unidirectional valve pocket 29 and the second logic valve pocket 30 in described valve body 1, be connected by the 7th oil duct 14 between described second piston chamber 28 and the second logic valve pocket 30; Be connected by the 4th oil duct 11 between described second piston chamber 28 and the second unidirectional valve pocket 29;
Be provided with the second one-way valve 3 for controlling the break-make between the second unidirectional valve pocket 29 and the 4th oil duct 11 in described second unidirectional valve pocket 29, described second one-way valve 3 comprises the second nonreturn valve core 301, second check valve spring 302 and the second one-way valve plug screw 303; Described second unidirectional valve pocket 29 is isolated into the second one-way valve upper cavity 2901 and the second one-way valve lower chamber 2902 by described second nonreturn valve core 301, and described second one-way 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 one-way valve upper cavity 2901; Described second one-way valve plug screw 303 is arranged in the outlet of described second unidirectional valve pocket 29, the outlet below the second one-way valve lower chamber 2902 of the second unidirectional valve pocket 29 is closed; Described second check valve spring 302 is between described second nonreturn valve core 301 and the second one-way valve plug screw 303;
The second logical valve 21 for controlling the break-make between the second logic valve pocket 30 and the 7th oil duct 14 is provided with in described second logic valve pocket 30; Described second logical valve 21 comprises the second logic spool 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 the second logical valve lower chamber 3002 by described second logic spool 2101, and described second logical valve upper cavity 3001 is connected with the second pressure port P2 by the internal galleries of integrated 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 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 comprises the second logic control valve body 3101, second logic control spool 3102, second logic control valve spring 3103, interface Pib2, interface T2; Described second logic control valve body 3101 is fixed on described valve body 1, be provided with the second logic control valve pocket 3104 in second logic control valve body 3101, described second logic control spool 3102, second logic control valve spring 3103 is all arranged in described second logic control valve pocket 3104; Described second logic control valve pocket 3104 is by being connected with the 6th oil duct 13 with described 5th oil duct 12 with the 6th logic control oil duct 3106 respectively by the 5th logic control oil duct 3105; Described second logic control spool 3102 is 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 oily Pi2 by outside oil circuit and excavator and is connected; Described interface T2 is connected with oil return inlet T;
Described second piston chamber 28 is arranged at the second guiding valve 25; Second guiding valve 25 comprises the second slide valve lever 2501, second slide valve spring 2502, 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, and 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 are closed within described valve body 1 by described second slide valve lever 2501; Described second slide valve spring 2502 is arranged in the inner chamber of described second left sealing cap 2503, is provided for after the second slide valve lever 2501 is moved to the left and resets to the right; 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 oily Pi2 by interface Pia2 with excavator and is connected.
As shown in Figure 5, when controlling oily Pi2 and providing pressure oil, when pressure reaches 0.5MPa, namely Pia2 pressure reaches 0.5MPa, second logic control spool of the second logical valve control valve is pushed to and moves down, 5th runner and the 6th runner cut off by the second logic control spool, and the 6th runner and oil return T are connected, namely the second logical valve lower chamber 3002 pressure of the second logical valve is 0, P2 mouth (P2, P3, P4 is parallel interface, receive recovered energy storage) the second logical valve presses to and moves down by pressure oil, second logic spool of the second logical valve moves down and the second logical valve is opened, P2 mouth is connected with the 7th runner by the second logical valve upper cavity 3001.When Pi2 pressure is greater than 0.7MPa, namely Pia2 pressure is greater than 0.7MPa, second guiding valve is pushed to a left side, and the 7th runner is communicated with the 4th runner, pressure flow from external energy storage device 23 through P2 mouth to the 7th runner, again to the 4th runner, the second one-way valve pushed open between P2 and P1 enters into P1 mouth, the energy of recovery is discharged again and makes the big arm cylinder of digging machine increase, thus achieve the recycling of recovered energy, save the energy, improve the environmental-protecting performance of excavator work.
Described valve body 1 is also provided with a second hydraulic fluid port A2.A2 mouth is hydraulic fluid port for subsequent use, is in parallel with A1 mouth, and operationally A1 and A2 mouth selects one arbitrarily, facilitates connecting pipeline, and another sealed in external is stifled to be closed.
More than show and describe basic principle of the present invention, major character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; the just principle of the present invention described in above-described embodiment and specification; 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 all fall in claimed scope of the present invention.The protection domain of application claims is defined by appending claims and equivalent thereof.
Claims (6)
1. one kind for excavator energy regenerating and recycling and can antioverloading integrated valve, it is characterized in that, comprise 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 outside oil circuit (22) of integrated valve, described second pressure port P2 place is provided with first one-way valve (2), makes the hydraulic oil at described first hydraulic fluid port A1 place can through the second pressure port P2 described in described outside oil circuit single flow direction; Integrated valve internal oil passages between described first pressure port P1 and described second pressure port P2 is also provided with second one-way valve (3), makes the hydraulic oil when fault offset be 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 rises to large arm during big arm cylinder (4) fuel feeding, 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 integrated valve, and described 3rd pressure port P3 is connected with an external energy storage device (23);
Be provided with the first piston chamber (5) and the first logic valve pocket (6) in described valve body (1), be 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 integrated valve, described first logical valve (20) is arranged in described first logic valve pocket (6), for controlling the break-make between described first pressure port P1 and described first oil duct (8); First logical valve (20) comprises 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) below is located at by first logical valve spring (2002), and described first logical valve spring (2002) below is closed by a plug screw;
Described first logic valve pocket (6) also by the second oil duct (9) and the 3rd oil duct (10) be arranged at valve body (1) the first logic control valve (7) outward and be connected, described first logic control valve (7) comprises 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) is provided with in first logic control valve body (701), described first logic control spool (702), first logic control valve spring (703) is all arranged in described first logic control valve pocket (704), described first logic control valve pocket (704) is by being connected with the 3rd oil duct (10) with described second oil duct (9) with the 3rd logic control oil duct (706) respectively by the second logic control oil duct (705), described first logic control spool (702) is 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 oily Pi1 by outside oil circuit and excavator and is connected, described interface T1 is connected with oil return inlet T.
The first guiding valve (24) is provided with in described first piston chamber (5); Described first guiding valve (24) comprises 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 are closed within described valve body (1) by described first slide valve lever (2401); Described first slide valve spring (2402) is arranged in the inner chamber of described first left sealing cap (2403), is provided for after the first slide valve lever (2401) is moved to the left and resets to the right; 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 oily Pi1 by interface Pia1 with excavator and is connected.
2. one according to claim 1 is used for excavator energy regenerating and recycling and can antioverloading integrated valve, it is characterized in that, be provided with overload valve pocket (26) in described valve block body (1), in described overload valve pocket (26), be provided with an overload valve (27); Described overload valve pocket (26) is connected with the internal oil passages between described second pressure port P2 with described 3rd pressure port P3, described overload valve pocket (26) is also connected with oil return inlet T, controls the break-make between internal oil passages between described 3rd pressure port P3 and described second pressure port P2 and described oil return inlet T by described overload valve (27).(when when big arm of digger declines, gravitational potential energy is excessive, the high pressure oil pressure that energy conversion device 18 produces is excessive, may damage whole energy-recuperation system.So in decline process, once the high pressure oil pressure transformed exceedes overload valve setting pressure, high pressure oil is through P2 mouth to P3 mouth, and the overload valve between P2 mouth and P3 mouth is opened, by the Stress control of high pressure oil in setting safety range, ensure the safety of whole system.
3. the one according to claim 1 and 2 is used for excavator energy regenerating and recycling and can antioverloading integrated valve, it is characterized in that, described overload valve (27) comprises 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), and described overload valve pressure port (2707) is connected with between described second pressure port P2; Be provided with main valve plug (2702) and conical valve base (2704) in the inner chamber of described main valve housing (2701), described conical valve base (2704) is positioned at the top of described main valve plug (2702); The outer circumferential face of described main valve housing (2701) is provided with overload valve oil return inlet T 3, and described overload valve oil return inlet T 3 communicates with the part cavity being positioned at main valve plug (2702) below of described main valve housing (2701) inner chamber;
Described main valve plug (2702) top is provided with main valve plug groove (2708), the below of described main valve plug groove (2708) offers the first damping hole (2709), described first damping hole (2709) runs through described main valve plug (2702) along the axis of described main valve plug (2702), is connected between described main valve plug groove (2708) with described overload valve pressure port (2707) by described first damping hole (2709); The lower end of described main spool spring (2703) is positioned at described main valve plug groove (2708) and abuts against with the bottom land of described main valve plug groove (2708), and the upper end of described main spool spring (2703) and the lower end surface of described conical valve base (2704) abut against; The axial shoulder hole (2711) through described conical valve base (2704) along described conical valve base (2704) is arranged in described conical valve base (2704), the lower end of described poppet valve core (2705) is inserted within described shoulder hole (2711) epimere, the hypomere of described shoulder hole (2711) is the second damping hole (2710), and described shoulder hole (2711) is connected with described main valve plug groove (2708) by main valve housing (2701) inner chamber of described second damping hole (2710) with poppet valve core (2705) below; Described sleeve pipe (17) is sheathed on the outer circumferential face of the epimere of described main valve housing (2701), is formed with the first oil back chamber (2712) and the second oil back chamber (2713) between described sleeve pipe (17) inwall and the outer circumferential face of described main valve housing (2701); The upper end of described poppet valve core (2705) is arranged in the inner chamber of described sleeve pipe (17), cone valve spring (2706) is provided with on described poppet valve core (2705), the lower end of described pressure regulating screw (16) is threaded in the inner chamber epimere of described sleeve pipe (17), and the upper end of described cone valve spring (2706) and the lower end of described pressure regulating screw (16) abut against; The intracavity inter-connection of described first oil back chamber (2712) and described sleeve pipe (17), described second oil back chamber (2713) 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).
4. the one according to claim 1 and 3 is used for excavator energy regenerating and recycling and can antioverloading integrated valve, it is characterized in that, the top of described adapter sleeve (17) is provided with a nut (15), is connected in the mode of screw-thread fit between described nut (15) with described pressure regulating screw (16); Stepped shaft seal ring (19) is provided with between described nut and described sleeve pipe (17).
5. one according to claim 1 is used for excavator energy regenerating and recycling and can antioverloading integrated valve, it is characterized in that, be 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), be connected by the 7th oil duct (14) between described second piston chamber (28) and the second logic valve pocket (30); Be connected by the 4th oil duct (11) between described second piston chamber (28) and the second unidirectional valve pocket (29);
Be provided with the second one-way valve (3) for controlling the break-make between the second unidirectional valve pocket (29) and the 4th oil duct (11) in described second unidirectional valve pocket (29), described second one-way valve (3) comprises the second nonreturn valve core (301), the second check valve spring (302) and the second one-way valve plug screw (303); Described second unidirectional valve pocket (29) is isolated into the second one-way valve upper cavity (2901) and the second one-way valve lower chamber (2902) by described second nonreturn valve core (301), and described second one-way 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 one-way valve upper cavity (2901); Described second one-way valve plug screw (303) is arranged in the outlet of described second unidirectional valve pocket (29), the outlet of the second one-way valve lower chamber (2902) below of the second unidirectional valve pocket (29) is closed; Described second check valve spring (302) is positioned between described second nonreturn valve core (301) and the second one-way valve plug screw (303);
The second logical valve (21) for controlling the break-make between the second logic valve pocket (30) and the 7th oil duct (14) is provided with in described second logic valve pocket (30); Described second logical valve (21) comprises 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 with the second pressure port P2 by the internal galleries of integrated 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) comprises 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), be 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) are all arranged in described second logic control valve pocket (3104); Described second logic control valve pocket (3104) is by being connected with the 6th oil duct (13) with described 5th oil duct (12) with the 6th logic control oil duct (3106) respectively by the 5th logic control oil duct (3105); Described second logic control spool (3102) is 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 oily Pi2 by outside oil circuit and excavator and is connected; Described interface T2 is connected with oil return inlet T;
Described second piston chamber (28) is arranged at the second guiding valve (25); Second guiding valve (25) comprises 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 are closed within described valve body (1) by described second slide valve lever (2501); Described second slide valve spring (2502) is arranged in the inner chamber of described second left sealing cap (2503), is provided for after the second slide valve lever (2501) is moved to the left and resets to the right; 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 oily Pi2 by interface Pia2 with excavator and is connected.
6. one according to claim 1 is used for excavator energy regenerating and recycling and can antioverloading integrated valve, it is characterized in that, described valve body (1) is also provided with a second hydraulic fluid port A2.
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| CN201410410090.1A 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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| CN201410410090.1A 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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| CN104314904B CN104314904B (en) | 2017-05-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114060341A (en) * | 2021-12-01 | 2022-02-18 | 徐工集团工程机械股份有限公司 | Regeneration valve, multi-connection valve, hydraulic system and engineering machinery |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08158411A (en) * | 1994-12-07 | 1996-06-18 | Shin Caterpillar Mitsubishi Ltd | Hydraulic circuit |
| WO2012002439A1 (en) * | 2010-06-30 | 2012-01-05 | キャタピラー エス エー アール エル | Control circuit for energy regeneration and working machine |
| CN102758813A (en) * | 2012-08-01 | 2012-10-31 | 三一重工股份有限公司 | Energy-recovery hydraulic system and engineering machinery |
| 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 |
| 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 |
| CN104254066A (en) * | 2013-06-28 | 2014-12-31 | 华为技术有限公司 | State information transfer method, deactivation method, station equipment and terminal equipment |
-
2014
- 2014-08-19 CN CN201410410090.1A patent/CN104314904B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08158411A (en) * | 1994-12-07 | 1996-06-18 | Shin Caterpillar Mitsubishi Ltd | Hydraulic circuit |
| WO2012002439A1 (en) * | 2010-06-30 | 2012-01-05 | キャタピラー エス エー アール エル | Control circuit for energy regeneration and working machine |
| CN102758813A (en) * | 2012-08-01 | 2012-10-31 | 三一重工股份有限公司 | Energy-recovery hydraulic system and engineering machinery |
| CN104254066A (en) * | 2013-06-28 | 2014-12-31 | 华为技术有限公司 | State information transfer method, deactivation method, station equipment and terminal equipment |
| 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 |
| 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114060341A (en) * | 2021-12-01 | 2022-02-18 | 徐工集团工程机械股份有限公司 | Regeneration valve, multi-connection valve, hydraulic system and engineering machinery |
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