CN204553386U - The control valve of proportional multi-way valve, control connection, proportional multi-way valve and hoist - Google Patents

The control valve of proportional multi-way valve, control connection, proportional multi-way valve and hoist Download PDF

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Publication number
CN204553386U
CN204553386U CN201520110436.6U CN201520110436U CN204553386U CN 204553386 U CN204553386 U CN 204553386U CN 201520110436 U CN201520110436 U CN 201520110436U CN 204553386 U CN204553386 U CN 204553386U
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China
Prior art keywords
valve
filler opening
pressure
communicated
actuator port
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CN201520110436.6U
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Chinese (zh)
Inventor
赵燕
孙辉
韩家威
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Construction Machinery Branch of XCMG
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Construction Machinery Branch of XCMG
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Abstract

The utility model relates to a kind of control valve opening the proportional multi-way valve of the two Oil-source control of core type, described control valve comprises at least one working position, and the pressure oil of at least two pressure oil-sources described in can making when this working position enters corresponding actuator port through described one-way valve interflow.The utility model also provides a kind of proportional multi-way valve and the hoist of opening the two Oil-source control of core type.The utility model can realize one action, two oil sources twocouese interflow, realizes one action speed maximum, improves car load operating efficiency; One action, single oil sources fuel feeding, realize one action throttle grverning; Composite move, a point oil sources divide oil pump feed, improve system composite move performance; Composite move, single oil sources fuel feeding, reduce composite move and switch compression shock, improve handling.

Description

The control valve of proportional multi-way valve, control connection, proportional multi-way valve and hoist
Technical field
The utility model relates to engineering machinery field, particularly a kind of proportional multi-way valve control valve, control connection, proportional multi-way valve and hoist.
Background technique
Arm is utilized to sling weight when truck crane and lorry-mounted crane work, then rotation of rotary table is relied on to be finished the work from a position transfer to another one position by weight task, main actions comprises master winch, secondary elevator, flexible, luffing and revolution, and wherein front four actions are generally integrated on main valve.
Proportional multi-way valve is the core parts of construction machinery hydraulic system, between pump and executive component.In proportional multi-way valve, conventional Non-follow control or proportion electro-magnet electrichydraulic control commutation, make the change that the stroke of spool is proportional, be convenient to the flow of accuracy-control system.Load sensitive system utilizes pressure-compensated valve to play balanced load effect usually, make all valve rod inlet outlet pressure differentials equal, the flow of guarantee work connection is only relevant with the stroke of this manipulation valve rod, and operator easily controls its composite move by the hope of oneself, keeps the independence of each actuator motions.
Truck crane general at present or lorry-mounted crane load multi-way valve, one is applied to single oil supply system, and the speed that can not improve flexible, luffing, master winch and secondary elevator, to maximum, reduces car load operating efficiency greatly.Another kind is applied to two oil supply system, and existence can only realize interflow, a direction, and namely only possess hoisting system two oil sources interflow function, the first oil pump and the second oil pump only can give elevator fuel feeding simultaneously, and action that is flexible and luffing is all single oil sources fuel feeding.And composite move assignment of traffic is uneven, when composite move switches, there is compression shock problem.
Model utility content
The purpose of this utility model be to provide a kind of open the proportional multi-way valve of the two Oil-source control of core type control valve, control connection, proportional multi-way valve and hoist, with by two oil sources twocouese interflow, realize one action speed maximum, improve car load operating efficiency; By single oil sources fuel feeding, realize one action throttle grverning; Divide oil pump feed by a point oil sources, improve system composite move performance; By single oil sources fuel feeding, reduce composite move and switch compression shock, improve manoeuvring performance.
The utility model provides the control valve in a kind of proportional multi-way valve opening the two Oil-source control of core type, comprise: at least two filler openings, at least two return openings, two actuator ports, described at least two filler openings are connected with at least two pressure oil-sources respectively by oil-feed oil circuit; Described at least two return openings are all communicated with fuel tank; One-way valve is provided with between the oil-feed oil circuit that described at least two filler openings are corresponding; Described control valve comprises at least one working position, and the pressure oil of at least two pressure oil-sources described in can making when this working position enters corresponding actuator port through described one-way valve interflow.
Further, the first filler opening, the second filler opening, the first return opening, the second return opening, the first actuator port and the second actuator port, described first filler opening is connected with the first pressure oil-source and the second pressure oil-source respectively with described second filler opening; Described first return opening is connected with fuel tank respectively with described second return opening; Also comprise one-way valve, described one-way valve inlet is communicated with the oil circuit between the second pressure oil-source with described second filler opening, and the outlet of described one-way valve is communicated with the oil circuit between described first pressure oil-source and described first filler opening;
This control valve comprises the first working position and the second working position, and when this control valve is positioned at the first working position, the pressure oil of described second filler opening collaborates to enter described first actuator port through this one-way valve and the first filler opening; And when this control valve is positioned at the second working position, the pressure oil of described second filler opening collaborates to enter described second actuator port through this one-way valve and the first filler opening.
Further, when described first working position, described first actuator port is communicated with load-sensitive oil circuit; When described second working position, described second actuator port is communicated with load-sensitive oil circuit.
Further, described control valve comprises meta, and when described control valve is positioned at described meta, described first filler opening cut-off, described second filler opening, described first actuator port are all communicated with described fuel tank with described second actuator port.
Further, when described meta, described first actuator port is all communicated with load-sensitive oil circuit with described second actuator port.
Further, described control valve comprises the 3rd working position and the 4th working position, when described control valve is positioned at described 3rd working position, described first filler opening is communicated with described first actuator port, and described second actuator port is all communicated with described fuel tank with described second filler opening; When described control valve is positioned at described 4th working position, described first filler opening is communicated with described second actuator port, and described first actuator port is communicated with described fuel tank with described second filler opening.
Further, when described 3rd working position, described first actuator port is communicated with described load-sensitive oil circuit; When described 4th working position, described second actuator port is communicated with described load-sensitive oil circuit.
The utility model also provides a kind of control connection opening the proportional multi-way valve of the two Oil-source control of core type, and it comprises above-mentioned control valve.
Further, also comprise the first main relief valve, the second main relief valve, first level relief valve and second subprime relief valve, described first main relief valve is arranged between described first pressure oil-source and described fuel tank, and described second main relief valve is arranged between described second pressure oil-source and described fuel tank; Described first level relief valve is arranged between described first actuator port and described fuel tank, and described second subprime relief valve is arranged between described second actuator port and described fuel tank.
Further, also comprise pressure-compensated valve, described pressure-compensated valve is arranged between described first pressure oil-source and described first filler opening, described pressure-compensated valve 3 ' is used for ensureing that pressure reduction is constant before and after control valve, thus ensures that the first filler opening hydraulic fluid flow rate entering control valve is only relevant with the aperture of control valve.
Further, described pressure-compensated valve comprises filler opening, the first actuator port and the second actuator port, described filler opening is communicated with described first pressure oil-source, first actuator port of described pressure-compensated valve is communicated with the first filler opening of described control valve, and the second actuator port of described pressure-compensated valve is used for being communicated with the filler opening controlling the pressure-compensated valve joined described in next.
Further, described pressure-compensated valve also comprises spring control end and non-spring control end, described control valve comprises load-sensitive oil circuit, and described spring control end is communicated with described load-sensitive oil circuit, and described non-spring control end is communicated with the first filler opening of described control valve.
The utility model also provides a kind of proportional multi-way valve opening the two Oil-source control of core type, and it comprises at least one above-mentioned control connection.
Further, comprise the first main filler opening, it is for being communicated with the first pressure oil-source; Second main filler opening, it is for being communicated with the second pressure oil-source; And main return opening, it is for being communicated with fuel tank; At least one control connection described is connected in parallel on described first main filler opening, between the second main filler opening and described main return opening.
Further, at least one control connection described comprises the first control connection and second and controls connection, the first filler opening that described first main filler opening controls through the pressure-compensated valve and first that first controls connection the control valve joined is communicated with, and described first main filler opening is communicated with the first filler opening that the second pressure-compensated valve and described second controlling connection controls the control valve joined through the pressure-compensated valve that first controls connection; Described second main filler opening is communicated with the described second the second filler opening controlling the second control valve joined; The second pressure-compensated valve that described first pressure-compensated valve and described second controlling connection controls to join is communicated with; Described first the second filler opening controlling the control valve of connection is communicated with the described second return opening controlling the control valve joined; Described first return opening controlling the control valve of connection is communicated with described main return opening.
Further, the pressure-compensated valve of the described first pressure-compensated valve and the second control connection controlling connection includes filler opening, the first actuator port and the second actuator port, described first filler opening controlling the pressure-compensated valve of connection is communicated with described first main filler opening, the first filler opening that described first the first actuator port and described first controlling the pressure-compensated valve of connection controls the control valve joined is communicated with, and the described first the second actuator port controlling the pressure-compensated valve of connection is communicated with the second filler opening controlling the pressure-compensated valve joined.
Further, control connection and second described in first to control between connection, to be also provided with at least one and control connection described in the 3rd, the second filler opening that the oil outlet and described first of control valve controlling to join described in 3rd controls the control valve joined is communicated with, and the second filler opening controlling the control valve of connection described in the 3rd is communicated with the described second oil outlet controlling the control valve joined.
Further, the pressure-compensated valve controlling described in 3rd to join comprises filler opening, the first actuator port and the second actuator port, described first the second actuator port controlling the pressure-compensated valve of connection is communicated with the 3rd filler opening controlling the pressure-compensated valve joined, and the described 3rd the second actuator port controlling the pressure-compensated valve of connection is communicated with the second filler opening controlling the pressure-compensated valve joined.
The utility model also relates to a kind of hoist, and it comprises above-mentioned proportional multi-way valve.
Control valve of the present utility model, by arranging a working position, realizes one action, two oil sources twocouese interflow, realizes one action speed maximum, improve car load operating efficiency; One action, single oil sources fuel feeding, realize one action throttle grverning; Composite move, a point oil sources divide oil pump feed, improve system composite move performance; Composite move, single oil sources fuel feeding, reduce composite move and switch compression shock, improve manoeuvring performance.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present utility model, and form a application's part, schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the hydraulic schematic diagram opening an embodiment of the control valve of the proportional multi-way valve of the two Oil-source control of core type of the present utility model.
Fig. 2 is the hydraulic schematic diagram that the utility model opens an embodiment of the control connection of the proportional multi-way valve of the two Oil-source control of core type.
Fig. 3 is the hydraulic schematic diagram of an embodiment of the hydraulic control system of hoist of the present utility model, and it has multiple control connection.
Embodiment
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Fig. 1 shows a specific embodiment of the control valve in the proportional multi-way valve opening the two Oil-source control of core type of the present utility model, it comprises: at least two filler openings, at least two return openings, two actuator ports, and described at least two filler openings are connected with at least two pressure oil-sources respectively by oil-feed oil circuit; Described at least two return openings are all communicated with fuel tank; One-way valve is provided with between the oil-feed oil circuit that described at least two filler openings are corresponding; Described control valve comprises at least one working position, particularly, comprise the first working position and the second working position in this specific embodiment, the pressure oil of at least two pressure oil-sources described in can making when this working position enters corresponding actuator port through described one-way valve interflow.Proportional multi-way valve of the present utility model is by realizing the two oil sources twocouese interflow of simply connected action when above-mentioned first and second working position; Two composite moves, wheel cylinder divides oil sources fuel feeding.
Specifically, with reference to figure 1, the specific embodiment of the control valve in proportional multi-way valve of the present utility model comprises the first filler opening, the second filler opening, the first return opening, the second return opening, the first actuator port and the second actuator port, and described first filler opening is connected with the first pressure oil-source P1 and the second pressure oil-source P2 respectively with described second filler opening; Described first return opening is connected with fuel tank T respectively with described second return opening; Also comprise one-way valve 4, described one-way valve 4 entrance is communicated with the oil circuit between described second filler opening with the second pressure oil-source P2, and the outlet of described one-way valve 4 is communicated with the oil circuit between described first pressure oil-source P1 and described first filler opening; This control valve comprises the first working position 7 and the second working position 2, and when this control valve is positioned at the first working position 7, the pressure oil of described second filler opening collaborates to enter described first actuator port through this one-way valve 4 and the first filler opening; And when this control valve is positioned at the second working position 2, the pressure oil of described second filler opening collaborates to enter described second actuator port through this one-way valve 4 and the first filler opening.Therefore, when the utility model guarantees the action of proportional multi-way valve simply connected, standard-sized sheet position, two oil sources twocouese interflow, can realize one action actuator speed maximum.
In addition, for guaranteeing the pressure feedback obtaining each actuator port, to guarantee the validity of system works, when described first working position 7, described first actuator port is communicated with load-sensitive oil circuit LS; When described second working position 2, described second actuator port is communicated with load-sensitive oil circuit LS.
In addition, control valve in proportional multi-way valve of the present utility model also comprises meta 5, when described control valve is positioned at described meta 5, described first filler opening cut-off, described second filler opening, described first actuator port are all communicated with described fuel tank T with described second actuator port.Similarly, when described meta 5, described first actuator port is all communicated with load-sensitive oil circuit LS with described second actuator port.
Control valve in proportional multi-way valve of the present utility model additionally provides single oil sources fuel system, particularly, described control valve comprises the 3rd working position 6 and the 4th working position 3, when described control valve is positioned at described 3rd working position 6, described first filler opening is communicated with described first actuator port, and described second actuator port is all communicated with described fuel tank T with described second filler opening; When described control valve is positioned at described 4th working position 3, described first filler opening is communicated with described second actuator port, and described first actuator port is communicated with described fuel tank T with described second filler opening.This ensures that, single oil sources fuel feeding and realize throttle grverning, when composite move switches, compression shock is little, and handling is good.
Similarly, when described 3rd working position 6, described first actuator port is communicated with described load-sensitive oil circuit LS; When described 4th working position 3, described second actuator port is communicated with described load-sensitive oil circuit LS.
Control valve in proportional multi-way valve of the present utility model can be used for but is not limited in the luffing control of hoist, extension and contraction control, master winch control and secondary rolling control, for luffing control, handle 1 is motionless, valve is in meta, first inlet pressure oil cut-off, the second inlet pressure oil oil sump tank T.First actuator port and the second actuator port are connected to fuel tank T.Handle 1 is up broken to standard-sized sheet position, and valve is in the first working position, and the second inlet pressure oil collaborates to enter the first actuator port through one-way valve and the first filler opening, and meanwhile, the first actuator port pressure feedback is to LS mouth, and the second actuator port pressure oil is back to T mouth.Handle 1 is up broken to transition position, valve is in the 3rd working position, and the first inlet pressure oil enters the first actuator port, and the first actuator port pressure feedback is to LS mouth simultaneously, second actuator port pressure oil is back to T mouth, now the second inlet pressure oil directly oil sump tank T.Handle 1 is down broken to standard-sized sheet position, and valve is in the second working position, and the second inlet pressure oil collaborates to enter the second actuator port through one-way valve and the first filler opening, and the second actuator port pressure feedback is to LS mouth simultaneously, and the first actuator port pressure oil is back to T mouth.Handle 1 is down broken to transition position, valve is in the 4th working position, and the first inlet pressure oil enters the second actuator port, and the second actuator port pressure feedback is to LS mouth simultaneously, first actuator port pressure oil is back to T mouth, now the second inlet pressure oil directly oil sump tank T.
Extension and contraction control, master winch control and secondary rolling control controls with luffing.
As shown in Figure 2, proportional multi-way valve of the present utility model also provides a kind of and controls connection, and it comprises above-mentioned control valve.
Particularly, for guaranteeing to control connection reliability of operation, this control connection also comprises the first main relief valve 1 ', the second main relief valve 6 ', first level relief valve 5 ' and second subprime relief valve 7 ', described first main relief valve 1 ' is arranged between described first pressure oil-source P1 and described fuel tank T, and described second main relief valve 6 ' is arranged between described second pressure oil-source P2 and described fuel tank T; Described first level relief valve 5 ' is arranged between described first actuator port and described fuel tank T, and described second subprime relief valve 7 ' is arranged between described second actuator port and described fuel tank T.
In addition, also comprise pressure-compensated valve 3 ', described pressure-compensated valve 3 ' is arranged between described first pressure oil-source P1 and described first filler opening, described pressure-compensated valve 3 ' is used for ensureing that pressure reduction is constant before and after control valve, thus ensures that the first filler opening hydraulic fluid flow rate entering control valve is only relevant with the aperture of control valve.Described pressure-compensated valve 3 ' comprises filler opening, the first actuator port and the second actuator port, described filler opening is communicated with described first pressure oil-source P1, first actuator port of described pressure-compensated valve 3 ' is communicated with the first filler opening of described control valve, and the second actuator port of described pressure-compensated valve 3 ' is used for being communicated with the filler opening controlling the pressure-compensated valve joined described in next.Described pressure-compensated valve 3 ' also comprises spring control end and non-spring control end, described control valve comprises load-sensitive oil circuit LS, described spring control end is communicated with described load-sensitive oil circuit LS, and described non-spring control end is communicated with the first filler opening of described control valve.Load sensitive system utilizes pressure-compensated valve to play balanced load effect usually, make all valve rod inlet outlet pressure differentials equal, the flow of guarantee work connection is only relevant with the stroke of this manipulation valve rod, and operator easily controls its composite move by the hope of oneself, keeps the independence of each actuator motions.
As shown in Figure 3, the utility model also provides a kind of proportional multi-way valve opening the two Oil-source control of core type, and it comprises at least one above-mentioned control connection, and this proportional multi-way valve comprises the first main filler opening, and it is for being communicated with the first pressure oil-source P1; Second main filler opening, it is for being communicated with the second pressure oil-source P2; And main return opening, it is for being communicated with fuel tank T; At least one control connection described is connected in parallel on described first main filler opening, between the second main filler opening and described main return opening.
At least one control connection described comprises the first control connection and second and controls connection, the first filler opening that described first main filler opening controls through the pressure-compensated valve and first that first controls connection the control valve joined is communicated with, and described first main filler opening is communicated with the first filler opening that the second pressure-compensated valve and described second controlling connection controls the control valve joined through the pressure-compensated valve that first controls connection; Described second main filler opening is communicated with the described second the second filler opening controlling the second control valve joined; The second pressure-compensated valve that described first pressure-compensated valve and described second controlling connection controls to join is communicated with; Described first the second filler opening controlling the control valve of connection is communicated with the described second return opening controlling the control valve joined; Described first return opening controlling the control valve of connection is communicated with described main return opening.In the present embodiment, first controls connection for luffing connection C, and second controls connection for master file connection M, and certainly, above-mentioned control connection is not limited to above-mentioned number and type.In this multi-way valve, before first F is connected in parallel on this first control connection, after tail connection L is connected in parallel on this second control connection.Also comprising in first F can the device of the second main filler opening path described in opening and closing, with under the operating mode needed, only by the first main filler opening fuel feeding.
The pressure-compensated valve of the described first pressure-compensated valve and the second control connection controlling connection includes filler opening, the first actuator port and the second actuator port, described first filler opening controlling the pressure-compensated valve of connection is communicated with described first main filler opening, the first filler opening that described first the first actuator port and described first controlling the pressure-compensated valve of connection controls the control valve joined is communicated with, and the described first the second actuator port controlling the pressure-compensated valve of connection is communicated with the second filler opening controlling the pressure-compensated valve joined.
Easily extensible ground, control connection and second described in first to control between connection, to be also provided with at least one and control connection described in the 3rd, the second filler opening that the oil outlet and described first of control valve controlling to join described in 3rd controls the control valve joined is communicated with, and the second filler opening controlling the control valve of connection described in the 3rd is communicated with the described second oil outlet controlling the control valve joined.In the present embodiment, the described 3rd to control connection can be secondary volume connection M1 or flexible connection S, or secondary volume connection M1 and flexible connection S.
The pressure-compensated valve controlling described in 3rd to join comprises filler opening, the first actuator port and the second actuator port, described first the second actuator port controlling the pressure-compensated valve of connection is communicated with the 3rd filler opening controlling the pressure-compensated valve joined, and the described 3rd the second actuator port controlling the pressure-compensated valve of connection is communicated with the second filler opening controlling the pressure-compensated valve joined.
Above-mentioned each control connection all joins in parallel with oil-feed connection and tail, and for guaranteeing safety, between the first main oil inlet P 1 and main oil return inlet T, arranges the first main relief valve, arranges the second main relief valve between the second filler opening in the second control connection and described main oil return inlet T.
In addition, if only think installation pump, by arranging flanged joint in proportional multi-way valve, therefore this proportional multi-way valve also only can fill an an oil sources i.e. pump.
Below, composition graphs 1 ~ 3 and said structure, for luffing connection C, illustratively operating process particularly of the present utility model:
Simply connected action, control valve handle are motionless, control valve is in meta: when P1 confession oil, and pressure compensator 3 ' works in right position under the effect of P1 mouth pressure oil.P1 mouth pressure oil enters through pressure compensator 3 ' second actuator port the oil inlet P c1 that next controls the pressure-compensated valve of connection, P2 mouth pressure oil directly oil sump tank.
Simply connected action, standard-sized sheet position: handle is up broken to maximum, luffing controls connection and is in standard-sized sheet position, P1 mouth pressure oil initially enters luffing through pressure-compensated valve 3 ' and controls connection, the A1 mouth pressure of LS mouth feedback acts on the spring terminal of pressure-compensated valve 3 ', and the other end of pressure-compensated valve 3 ' acts on P1 pressure oil.Pressure-compensated valve works in meta, pressure-compensated valve 3 spring force also namely luffing control pressure reduction before and after connection, thus controlling connection flow through luffing, only to control spool stroke with luffing proportional, and irrelevant with load.P2 mouth pressure oil collaborates to enter A1 mouth through one-way valve and P1 mouth, and P1 mouth pressure oil enters through pressure compensator second actuator port the oil inlet P c1 that next controls the pressure-compensated valve of connection simultaneously, and B1 mouth pressure oil is back to T mouth.Handle is down broken to maximum, P1 mouth pressure oil enters into luffing through pressure compensator 3 ' first actuator port and controls connection, luffing controls connection and is in standard-sized sheet position, P2 mouth pressure oil collaborates to enter B1 mouth through one-way valve and P1 mouth, simultaneously, the B1 mouth pressure oil of LS mouth feedback acts on the spring terminal of pressure compensator 3 ', and the non-spring terminal of pressure compensator 3 ' acts on P1 pressure oil.Pressure compensator 3 ' works in meta, P1 mouth pressure oil enters Pc1 through pressure compensator second actuator port, the spring of pressure compensator 3 end be used for ensureing luffing connection C valve core of main valve before and after pressure reduction constant, thus it is only proportional with luffing control valve spool stroke to make to control connection flow through luffing, and have nothing to do with load.A1 mouth pressure oil is back to T mouth.
Simply connected action, transition position: handle is up broken to transition position, pressure compensator 3 ' works in meta, P1 mouth pressure oil enters on one side luffing main valve and joins A1 mouth through pressure compensator 3 ', A1 mouth pressure feeds back to LS mouth simultaneously, B1 mouth pressure oil is back to T mouth, and P1 mouth pressure oil enters through pressure compensator second actuator port the oil inlet P c1 that next controls the pressure-compensated valve of connection simultaneously.Now P2 mouth pressure oil directly oil sump tank T.Handle is down broken to transition position, pressure compensator 3 ' works in meta, P1 mouth pressure oil enters into luffing through pressure compensator 3 ' first actuator port and controls connection B1 mouth, B1 mouth pressure feeds back to LS mouth simultaneously, A1 mouth pressure oil is back to T mouth, P1 mouth pressure oil enters Pc1 through pressure compensator 3 ' second actuator port, now P2 mouth pressure oil directly oil sump tank T.
Flexible connection S one action, standard-sized sheet position and transition position principle join C with luffing, its corresponding B2 and A2 mouth; The action of secondary elevator receipts or other documents in duplicate, standard-sized sheet position and transition position principle join S, its corresponding B3 and A3 mouth with flexible; The action of master winch receipts or other documents in duplicate, standard-sized sheet position and transition position principle join C with luffing, its corresponding B4 and A4 mouth.
Two composite moves, standard-sized sheet position: composite move when luffing connection C and master file connection M standard-sized sheet position, P1 is by pressure compensator to luffing control valve fuel feeding, and P2 rolls up control valve meta to extension and contraction control valve fuel feeding by master file control valve meta and pair.
Two composite moves, transition position: composite move when luffing connection C and master file connection M transition position, P1 mouth pressure oil is to luffing connection C and flexible connection S fuel feeding.The direct oil sump tank of P2 pressure oil.
Flexible connection S and master file join M two standard-sized sheet position and transition position composite principle joins M composite move standard-sized sheet position and transition position with luffing connection C and master file.
Secondary volume connection M1 and master file connection M two standard-sized sheet position composite principle are with luffing connection C and master file connection M composite move.
Proportional multi-way valve of the present utility model can install two oil sources even heavy wool source by oil circuit, finally realizes one action, two oil sources twocouese interflow, realize one action speed maximum, improve car load operating efficiency by this pair of oil sources or heavy wool source; One action, single oil sources fuel feeding, realize one action throttle grverning; Composite move, a point oil sources divide oil pump feed, improve system composite move performance; Composite move, single oil sources fuel feeding, reduce composite move and switch compression shock, improve handling.
Be understandable that, the proportional multi-way valve opening the two Oil-source control of core type of the present utility model can be used for, but is not limited to truck crane, lorry-mounted crane and fire-fighting truck etc.
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit; Although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the field have been to be understood that: still can modify to embodiment of the present utility model or carry out equivalent replacement to portion of techniques feature; And not departing from the spirit of technical solutions of the utility model, it all should be encompassed in the middle of the technological scheme scope of the utility model request protection.

Claims (19)

1. open the control valve of the proportional multi-way valve of the two Oil-source control of core type for one kind, it is characterized in that, comprise: at least two filler openings, at least two return openings, two actuator ports, described at least two filler openings are connected with at least two pressure oil-sources respectively by oil-feed oil circuit; Described at least two return openings are all communicated with fuel tank; One-way valve is provided with between the oil-feed oil circuit that described at least two filler openings are corresponding; Described control valve comprises at least one working position, and the pressure oil of at least two pressure oil-sources described in can making when this working position enters corresponding actuator port through described one-way valve interflow.
2. control valve as claimed in claim 1, it is characterized in that, comprise: the first filler opening, the second filler opening, the first return opening, the second return opening, the first actuator port and the second actuator port, described first filler opening is connected with the first pressure oil-source (P1) and the second pressure oil-source (P2) respectively with described second filler opening; Described first return opening is connected with fuel tank (T) respectively with described second return opening; Also comprise one-way valve (4), described one-way valve (4) entrance is communicated with the oil circuit between described second filler opening with the second pressure oil-source (P2), and the outlet of described one-way valve (4) is communicated with the oil circuit between described first pressure oil-source (P1) and described first filler opening;
This control valve comprises the first working position (7) and the second working position (2), when this control valve is positioned at the first working position (7), the pressure oil of described second filler opening collaborates to enter described first actuator port through this one-way valve (4) and the first filler opening; And when this control valve is positioned at the second working position (2), the pressure oil of described second filler opening collaborates to enter described second actuator port through this one-way valve (4) and the first filler opening.
3. control valve as claimed in claim 2, it is characterized in that, when described first working position (7), described first actuator port is communicated with load-sensitive oil circuit (LS); When described second working position (2), described second actuator port is communicated with load-sensitive oil circuit (LS).
4. control valve as claimed in claim 3, it is characterized in that, described control valve comprises meta (5), when described control valve is positioned at described meta (5), described first filler opening cut-off, described second filler opening, described first actuator port are all communicated with described fuel tank (T) with described second actuator port.
5. control valve as claimed in claim 4, it is characterized in that, when described meta (5), described first actuator port is all communicated with load-sensitive oil circuit (LS) with described second actuator port.
6. control valve as claimed in claim 4, it is characterized in that, described control valve comprises the 3rd working position (6) and the 4th working position (3), when described control valve is positioned at described 3rd working position (6), described first filler opening is communicated with described first actuator port, and described second actuator port is all communicated with described fuel tank (T) with described second filler opening; When described control valve is positioned at described 4th working position (3), described first filler opening is communicated with described second actuator port, and described first actuator port is communicated with described fuel tank (T) with described second filler opening.
7. control valve as claimed in claim 6, it is characterized in that, when described 3rd working position (6), described first actuator port is communicated with described load-sensitive oil circuit (LS); When described 4th working position (3), described second actuator port is communicated with described load-sensitive oil circuit (LS).
8. open the control connection of the proportional multi-way valve of the two Oil-source control of core type for one kind, it is characterized in that, comprise as the control valve of claim 1 ~ 7 as described in any one.
9. control connection as claimed in claim 8, it is characterized in that, described control valve comprises the first filler opening, the second filler opening, the first return opening, the second return opening, the first actuator port and the second actuator port, and described first filler opening is connected with the first pressure oil-source (P1) and the second pressure oil-source (P2) respectively with described second filler opening; Described control connection comprises the first main relief valve (1 '), the second main relief valve (6 '), first level relief valve (5 ') and second subprime relief valve (7 ') further, described first main relief valve (1 ') is arranged between described first pressure oil-source (P1) and described fuel tank (T), and described second main relief valve (6 ') is arranged between described second pressure oil-source (P2) and described fuel tank (T); Described first level relief valve (5 ') is arranged between described first actuator port and described fuel tank (T), and described second subprime relief valve (7 ') is arranged between described second actuator port and described fuel tank (T).
10. control connection as claimed in claim 9, it is characterized in that, also comprise pressure-compensated valve (3 '), described pressure-compensated valve (3 ') is arranged between described first pressure oil-source (P1) and described first filler opening, described pressure compensator (3 '), according to the induced pressure be communicated on the oil circuit of the first filler opening, keeps the hydraulic fluid flow rate of the first filler opening entering described control valve constant.
11. control connection as claimed in claim 10, it is characterized in that, described pressure-compensated valve (3 ') comprises filler opening, the first actuator port and the second actuator port, described filler opening is communicated with described first pressure oil-source (P1), first actuator port of described pressure-compensated valve (3 ') is communicated with the first filler opening of described control valve, and the second actuator port of described pressure-compensated valve (3 ') is used for being communicated with the filler opening controlling the pressure-compensated valve joined described in next.
12. control connection as claimed in claim 11, it is characterized in that, described pressure-compensated valve (3 ') also comprises spring control end and non-spring control end, described control valve comprises load-sensitive oil circuit (LS), described spring control end is communicated with described load-sensitive oil circuit (LS), and described non-spring control end is communicated with the first filler opening of described control valve.
13. 1 kinds of proportional multi-way valves opening the two Oil-source control of core type, is characterized in that, comprise at least one as the control connection of claim 8 ~ 12 as described in any one.
14. proportional multi-way valves as claimed in claim 13, is characterized in that, comprise the first main filler opening, it is for being communicated with the first pressure oil-source (P1); Second main filler opening, it is for being communicated with the second pressure oil-source (P2); And main return opening, it is for being communicated with fuel tank (T); At least one control connection described is connected in parallel on described first main filler opening, between the second main filler opening and described main return opening.
15. proportional multi-way valves as claimed in claim 14, it is characterized in that, at least one control connection described comprises the first control connection and second and controls connection, the first filler opening that described first main filler opening controls through the pressure-compensated valve and first that first controls connection the control valve joined is communicated with, and described first main filler opening is communicated with the first filler opening that the second pressure-compensated valve and described second controlling connection controls the control valve joined through the pressure-compensated valve that first controls connection; Described second main filler opening is communicated with the described second the second filler opening controlling the second control valve joined; The second pressure-compensated valve that described first pressure-compensated valve and described second controlling connection controls to join is communicated with; Described first the second filler opening controlling the control valve of connection is communicated with the described second return opening controlling the control valve joined; Described first return opening controlling the control valve of connection is communicated with described main return opening.
16. proportional multi-way valves as claimed in claim 15, it is characterized in that, the pressure-compensated valve of the described first pressure-compensated valve and the second control connection controlling connection includes filler opening, first actuator port and the second actuator port, described first filler opening controlling the pressure-compensated valve of connection is communicated with described first main filler opening, the first filler opening that described first the first actuator port and described first controlling the pressure-compensated valve of connection controls the control valve joined is communicated with, described first the second actuator port controlling the pressure-compensated valve of connection is communicated with the second filler opening controlling the pressure-compensated valve joined.
17. proportional multi-way valves as claimed in claim 15, it is characterized in that, control connection and second described in first to control between connection, to be also provided with at least one and control connection described in the 3rd, the second filler opening that the oil outlet and described first of control valve controlling to join described in 3rd controls the control valve joined is communicated with, and the second filler opening controlling the control valve of connection described in the 3rd is communicated with the described second oil outlet controlling the control valve joined.
18. proportional multi-way valves as claimed in claim 17, it is characterized in that, the pressure-compensated valve controlling described in 3rd to join comprises filler opening, the first actuator port and the second actuator port, described first the second actuator port controlling the pressure-compensated valve of connection is communicated with the 3rd filler opening controlling the pressure-compensated valve joined, and the described 3rd the second actuator port controlling the pressure-compensated valve of connection is communicated with the second filler opening controlling the pressure-compensated valve joined.
19. 1 kinds of hoists, is characterized in that, comprise the proportional multi-way valve as described in claim 13 ~ 18.
CN201520110436.6U 2015-02-15 2015-02-15 The control valve of proportional multi-way valve, control connection, proportional multi-way valve and hoist Withdrawn - After Issue CN204553386U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105179355A (en) * 2015-11-03 2015-12-23 徐州重型机械有限公司 Composite condition control system and engineering machinery
CN105370654A (en) * 2015-12-16 2016-03-02 日照海卓液压有限公司 Six-mode double-oil-way oil supply system
CN105987037A (en) * 2015-02-15 2016-10-05 徐工集团工程机械股份有限公司 Control valve of proportional multi-way valve, control linkage, proportional multi-way valve and crane
CN112664492A (en) * 2019-10-16 2021-04-16 沈阳新松机器人自动化股份有限公司 Double-valve-group parallel control hydraulic system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105987037A (en) * 2015-02-15 2016-10-05 徐工集团工程机械股份有限公司 Control valve of proportional multi-way valve, control linkage, proportional multi-way valve and crane
CN105987037B (en) * 2015-02-15 2018-07-17 徐工集团工程机械股份有限公司 Control valve, control connection, proportional multi-way valve and the crane of proportional multi-way valve
CN105179355A (en) * 2015-11-03 2015-12-23 徐州重型机械有限公司 Composite condition control system and engineering machinery
CN105370654A (en) * 2015-12-16 2016-03-02 日照海卓液压有限公司 Six-mode double-oil-way oil supply system
CN112664492A (en) * 2019-10-16 2021-04-16 沈阳新松机器人自动化股份有限公司 Double-valve-group parallel control hydraulic system

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