CN202251198U - Hydraulic shunting and converging control device - Google Patents
Hydraulic shunting and converging control device Download PDFInfo
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- CN202251198U CN202251198U CN2011204000638U CN201120400063U CN202251198U CN 202251198 U CN202251198 U CN 202251198U CN 2011204000638 U CN2011204000638 U CN 2011204000638U CN 201120400063 U CN201120400063 U CN 201120400063U CN 202251198 U CN202251198 U CN 202251198U
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Abstract
The utility model discloses a hydraulic shunting and converging control device, which comprises a hydraulic control valve, a main oil passage switching valve (8), a first controlled oil passage (10), a second controlled oil passage (11), a first oil inlet passage (12) and a second oil inlet passage (13), wherein the main oil passage switching valve is a hydraulic controlled reversing valve; the first oil inlet passage and the second oil inlet passage are respectively connected to the main oil passage switching valve; a valve core of the main oil passage switching valve has a normal conduction position and a controlled blocking position; the first controlled oil passage is connected to the hydraulic control interface of the main oil passage switching valve; and the second controlled oil passage is connected to the hydraulic control interface of the hydraulic control valve and used for controlling conduction of the hydraulic control valve or cut-off of the first controlled oil passage. Because shunting and converging control of the oil passages is performed by adopting a hydraulic control mode, the shunting and converging control can be performed by using hydraulic oil of a pilot hydraulic control handle after the hydraulic shunting and converging control device is installed on engineering equipment, and the shunting and converging functions are effectively realized; and the device has good synchronism and good control performance.
Description
Technical field
The utility model relates to a kind of deciliter flow control device, particularly, relates to a kind of hydraulic control deciliter flow control device.
Background technique
Generally speaking, the alleged branch of Hydraulic Field interflow (promptly shunt, collaborate), typically refer to as required with two-way or more the multichannel oil circuit be combined into an oil circuit, or an oil circuit is divided into two or more oil circuits, to realize centralized oil supply or multichannel fuel feeding.
Hydrovalve oil circuit used on the engineering mechanical device usually need carry out a deciliter current control, and is especially all the more so for duplex pump fuel feeding hydraulic control combined operation valve for crane, for example; Adopting duplex pump is the crane of hydraulic system fuel feeding, when only carrying out an action at one time, because duplex pump moves simultaneously; If do not collaborate control this moment; Will make a pump zero load in the duplex pump, its oil that pumps can not play a role, but directly returns fuel tank through respective line; Thereby cause the waste of power, need collaborate control this moment; And carry out at one time two whens action, corresponding actuator all needs hydraulic oil to supply with, and needs flow-dividing control this moment.
For now; Most engineering mechanical devices; For example crane is not provided with corresponding deciliter flow control valve or deciliter flow control device with duplex pump fuel feeding hydraulic control combined operation valve, and this mainly is because existing Hydraulic Field lacks deciliter flow control valve that relatively is suitable for.But; This engineering machinery that deciliter flow control device is not set can't realize a deciliter current control with hydraulic system, can reduce the usability of engineering machinery so undoubtedly, if for example crane is not provided with corresponding deciliter flow control device with duplex pump fuel feeding hydraulic control combined operation valve; Its function is obviously perfect inadequately; In operating process, can't carry out the specific aim adjustment, cause the waste of power, cause usability to reduce according to applying working condition; Under the situation of market competition more and more fierce, this can make competitiveness of product reduce.
In addition, also there is the minority crane to adopt manual control electromagnetic valve to realize deciliter current control of oil circuit, carries out a deciliter current control through the switching solenoid valve switch; But; This manual control electromagnetic valve can not be advantageously applied to the hydraulic system of crane, and especially its maneuverability pattern is comparatively complicated, and operator need manually electromagnetic valve switch to be controlled; This has increased operator's operation burden; And the speed of response of this manual control electromagnetic valve and lever operated being difficult to of operator's hydraulic control are consistent, and this has caused the asynchronism in the using process, operate not steady; Especially when operator's frequent operation hoist carries out the repeatedly switching of single movement and two concurrent activities, often be difficult to the operating characteristics that reaches desirable.
In view of this, a kind of novel deciliter flow control device need be provided, can realize engineering mechanical device hydraulic system deciliter current control effectively.
The model utility content
The utility model technical problem to be solved provides a kind of hydraulic control deciliter flow control device; This hydraulic control deciliter flow control device can be realized deciliter current control of hydraulic circuit effectively through the hydraulic control mode; Thereby after being installed on the engineering mechanical device; Hydraulic oil or other hydraulic control oil sources that guide's hydraulic control handle that can utilize engineering mechanical device to operate usefulness is provided carry out hydraulic control, make the operation of deciliter current control and guide's hydraulic control handle keep synchronism to become possibility.
In order to solve the problems of the technologies described above; The utility model provides a kind of hydraulic control deciliter flow control device; Comprise hydraulic control valve, working connection switching valve, first control oil channel, second control oil channel, the first oil-feed oil circuit and the second oil-feed oil circuit; Said working connection switching valve is the hyraulic controlled type selector valve; The said first oil-feed oil circuit and the second oil-feed oil circuit are connected to two oil circuit interfaces of this working connection switching valve; The spool of this working connection switching valve has at least and is used to make the normality conduction position that the said first oil-feed oil circuit is communicated with the second oil-feed oil circuit and the controlled blocking position of cut-out, and said first control oil channel is connected in the hydraulic control interface of said working connection switching valve via said hydraulic control valve, and said second control oil channel is connected in the hydraulic control interface of said hydraulic control valve and controls this hydraulic control valve conducting or cut off said first control oil channel.
Preferably, said hydraulic control valve is that the hydraulic control oil of liquid controlled reversing valve-type is judged valve, and this hydraulic control oil judges that the spool of valve has the normality primary importance and the controlled second place that is used to make this first control oil channel conducting that is used to make said first control oil channel cut-out at least.
More preferably, said hydraulic control oil judges that valve is hydraulic control two position switching valves.
Selectively, said hydraulic control valve is a Pilot operated check valve, and said first control oil channel is cut off under normality first state of said Pilot operated check valve, and conducting under controlled second state of this Pilot operated check valve.
Preferably, said first control oil channel is provided with first damping plug between the hydraulic control interface of said hydraulic control valve and said working connection switching valve, and said second control oil channel is provided with second damping plug.
More preferably, the damping sky of said first damping plug and second damping plug is the thin-walled damping hole.
Particularly, said first oil circuit and second control oil channel are connected to the control oil sources or the control oil channel of the hydraulic system of the engineering mechanical device that said hydraulic control deciliter flow control device installs.
Selectively, the control oil sources of said hydraulic system or control oil channel are guide's oil sources or guide's oil circuit of guide's hydraulic control handle of said engineering mechanical device.
Particularly; A said hydraulic control deciliter flow control device is provided with first filler opening, second filler opening, first control port and second control port; Said hydraulic control oil judges that valve and working connection switching valve are positioned at the inside of said hydraulic control deciliter flow control device; The said first oil-feed oil circuit, the second oil-feed oil circuit, first control oil channel and second control oil channel are the internal oil passages of this hydraulic control deciliter flow control device, and this first oil-feed oil circuit, the second oil-feed oil circuit, first control oil channel and second control oil channel are both port of origination with said first filler opening, second filler opening, first control port and second control port respectively.
Typically, a hydraulic control deciliter flow liquid control device also comprises oil return circuit, and this oil return circuit is communicated with respectively with said hydraulic control valve and working connection switching valve spring chamber separately.
Particularly, a said hydraulic control deciliter flow control device is provided with return opening, and said oil return circuit is the internal oil passages of this hydraulic control deciliter flow control device, and this oil return circuit is a both port of origination with said return opening.
Preferably; Said hydraulic control deciliter flow control device also comprises the first induced pressure oil circuit and the second induced pressure oil circuit on other two oil circuit interfaces that are connected to said working connection switching valve; This first induced pressure oil circuit and the second induced pressure oil circuit are at the spool of said main switching valve under the state of said normality conduction position and are interconnected, and are at the spool of said main switching valve under the state of said controlled blocking position to cut off each other.
Particularly; This hydraulic control deciliter flow control device is provided with the first induced pressure hydraulic fluid port and the second induced pressure hydraulic fluid port; The said first induced pressure oil circuit and the second induced pressure oil circuit are the internal oil passages of this hydraulic control deciliter flow control device, and this first induced pressure oil circuit and the second induced pressure oil circuit are both port of origination with the said first induced pressure hydraulic fluid port and the second induced pressure hydraulic fluid port respectively.
Particularly, said hydraulic control divides the interflow device to comprise valve body, forms valve pocket in this valve body, and this valve pocket cooperates with working connection switching spool and forms said working connection switching valve.
Particularly, said valve body also is formed with another valve pocket, and this another valve pocket cooperates with the spool of said hydraulic control valve and forms said hydraulic control valve.
Pass through technique scheme; The hydraulic control of the utility model deciliter flow control device adopts the hydraulic control mode to carry out deciliter current control of oil circuit fully; Thereby be installed to after engineering mechanical device (for example hoist) goes up, the hydraulic oil that can utilize guide's hydraulic control handle of engineering mechanical device to provide carries out the control at branch interflow, makes engineering mechanical device interflow when any one action is carried out separately effectively; And the function that when two actions are carried out simultaneously, realizes dividing the interflow; Thereby improved the working efficiency of oil sources and actuator, and improved the usability of actuator to a certain extent, this kind hydraulic control deciliter flow control device adopts hydraulic way to control fully; It has improved a deciliter mobile stationarity of making process, and then has improved the working stability of each actuator.Simultaneously; The hydraulic oil that this hydraulic control deciliter flow control device adopts guide's hydraulic control handle to be provided after being installed on the engineering mechanical device is controlled; Its deciliter flow operation carries out according to the operation of guide's hydraulic control handle fully, so synchronism is better, has the ideal control performance.
Other feature and advantage of the utility model will partly specify in embodiment subsequently.
Description of drawings
Attached drawings is used to provide the further understanding to the utility model; And constitute the part of specification; It is used to explain the utility model with following embodiment, but the protection domain of the utility model is not limited to following accompanying drawing and embodiment.In the accompanying drawings:
Fig. 1 is the hydraulic schematic diagram of the hydraulic control deciliter flow control device of the utility model embodiment;
Fig. 2 is the sectional structure schematic representation of the hydraulic control deciliter flow control device of the utility model embodiment, and wherein this hydraulic control deciliter flow control device is in the interflow state;
Fig. 3 is the sectional structure schematic representation of hydraulic control deciliter flow control device shown in Figure 2, and wherein this hydraulic control deciliter flow control device is in the branch stream mode;
Fig. 4 is along A-A line side cross sectional view shown in Figure 3;
Fig. 5 is the plan view of the hydraulic control flow-dividing control device of the utility model embodiment; And
Fig. 6 is the hydraulic schematic diagram of a kind of optional embodiment of the utility model.
Reference character and the explanation of hydraulic pressure sign flag:
1 switches valve core spring; 2 working connections switch spool;
3 judge valve core spring; 4 first damping plugs;
5 hydraulic controls oil is judged spool; 6 second damping plugs;
7 valve bodies; 8 working connection switching valves;
9 hydraulic controls oil is judged valve; 10 first control oil channel;
11 second control oil channel; 12 first oil-feed oil circuits
13 second oil-feed oil circuits; 14 oil return circuits;
15 first induced pressure oil circuits; 16 second induced pressure oil circuits;
17 Pilot operated check valves
701, P1 first filler opening; 702, P2 second filler opening;
703, the LS1 first induced pressure hydraulic fluid port; 704, the LS2 second induced pressure hydraulic fluid port;
705, T return opening; 706, K1 first control port;
707, K2 second control port; 708 first hydraulic controls oil introduction chamber;
709 first hydraulic controls oil communicated cavity; 710 first hydraulic controls oil acting chamber;
711 second hydraulic controls oil introduction chamber; 712 second hydraulic controls oil acting chamber.
Embodiment
Be elaborated below in conjunction with the embodiment of accompanying drawing to the utility model; Should be understood that; Embodiment described herein only is used for explanation and explains the utility model, and the protection domain of the utility model is not limited to following embodiment.
At first need explanation; The hydraulic control of a utility model deciliter flow control device belongs to Hydraulic Field; For the technician in this field; The substantive technical conceive of hydraulic system, hydraulic pressure installation etc. is the hydraulic pressure annexation, for example annexation shown in Fig. 1 or the hydraulic schematic diagram shown in Figure 6 and relevant valve function, and and do not lie in its concrete mechanical structure.
Correspondingly, hereinafter in the description to the utility model hydraulic control deciliter flow control device, the hydraulic pressure annexation of the utility model hydraulic control deciliter flow control device and the hydraulic function of corresponding spool will be as the technical conceives of the basic layer of the utility model.In addition, the hydraulic control of the utility model deciliter flow control device is as a kind of new type hydraulic device, and Fig. 2 belongs to a kind of preferred concrete way of realization to concrete mechanical structure shown in Figure 5 for the utility model, and it belongs to the protection domain of the utility model equally.
Referring to shown in Figure 1, the hydraulic control of this an embodiment deciliter flow control device comprises hydraulic control oil judgement valve 9 and working connection switching valve 8.Particularly; For example at Fig. 3 to the concrete structure schematic representation shown in Figure 5; Said hydraulic control oil judges that valve 9 forms with the valve pocket that is formed on the valve body 7 through hydraulic control oil judgement spool 5, and said working connection switching valve 8 switches spool 2 and another valve pocket formation that is formed on the valve body 7 through working connection.Certainly, said hydraulic control oil judges that valve 9 and working connection switching valve 8 are not limited to the practical implementation form of Fig. 3 to Fig. 5, in the technical conceive scope of the utility model, and its moulding fully separately.
Need at this annotatedly to be, in the technical conceive scope of the utility model, said hydraulic control deciliter flow control device both can form independently product and on market, sell being used for, and for example Fig. 2 is to situation shown in Figure 5.Under this situation; As shown in Figure 1; This hydraulic control deciliter flow control device that forms stand-alone product need have first oil inlet P 1, second oil inlet P 2, the first control port K1, the second control port K2 and oil return inlet T etc.; Otherwise it can't be connected in the hydraulic system through corresponding interface, and for example crane is with between the duplex pump fuel feeding hydraulic control combined operation valve.But; Also it should be noted that simultaneously; Those skilled in the art are after seeing hydraulic pressure catenation principle figure shown in Figure 1; Its hydraulic control oil that also possibly oneself produce function shown in Figure 1 is judged valve 9 and working connection switching valve 8; And then directly said hydraulic control oil is judged that valve 9 (or one-way valve of Fig. 6) and working connection switching valve 8 are connected in the applied hydraulic system according to the hydraulic pressure annexation shown in Fig. 1 (or Fig. 6); Therefore this moment is not because said hydraulic control deciliter flow control device forms independently product, do not possess above-mentioned first oil inlet P 1, second oil inlet P 2, the first control port K1, second control port K2 and the oil return inlet T, connects and just directly carry out pipeline according to the technical conceive of the utility model; The P1 that under this situation, is indicated in the hydraulic schematic diagram of Fig. 1, P2, K1, K2 and T etc. only are a kind of symbols that helps to understand the hydraulic pressure annexation, and do not have substantive significance.Therefore; No matter the hydraulic control deciliter flow control device of the utility model is to form Fig. 2 to independently integral product shown in Figure 5; Still each valve is separated and connected into completed knocked down products; Perhaps directly above-mentioned hydraulic control oil is judged that valve 9 and working connection switching valve 8 are connected to hydraulic system and form hydraulic control deciliter flow liquid pressure linkage structure, it all belongs to the technical conceive of the utility model, and can not break away from the protection domain of the utility model.
With regard to mode of execution shown in Figure 1; The hydraulic control of this embodiment deciliter flow control device is judged valve 9 and the working connection switching valve 8 except comprising above-mentioned hydraulic control oil; Also comprise first control oil channel 10, second control oil channel 11, the first oil-feed oil circuit 12 and the second oil-feed oil circuit 13; This first oil-feed oil circuit 12 and the second oil-feed oil circuit 13 are connected respectively on two oil circuit interfaces of said working connection switching valve 8; Said hydraulic control oil judges that valve 9 and working connection switching valve 8 are respectively the hyraulic controlled type selector valve; The spool of said working connection switching valve 8 has at least and is used to make normality conduction position that the said first oil-feed oil circuit 12 is communicated with the second oil-feed oil circuit 13 and the controlled blocking position that is used to make this first oil-feed oil circuit 12 with 13 cut-outs of the second oil-feed oil circuit; Said first control oil channel 10 judges that via said hydraulic control oil valve 9 is connected in the hydraulic control interface of working connection switching valve 8; Said hydraulic control oil judges that the spool of valve 9 has the normality primary importance and the controlled second place that is used to make these first control oil channel, 10 conductings that is used to make 10 cut-outs of said first control oil channel at least, and said second control oil channel 11 is connected in the hydraulic control interface that said hydraulic control oil is judged valve 9.In this mode of execution shown in Figure 1; Consistent with the implication of those skilled in the art's common sense; Said " normality " is meant above-mentioned pilot operated directional control valve residing position of spool when not receiving the driving of hydraulic control oil circuit, and this locatees the normality position of spool usually through spring; So-called " controlled " is meant that spool moves to another working position when receiving the oil pressure that comes from control oil channel, and this normally realizes through the elastic force that the hydraulic control oil pressure overcomes spring.
Preferably; Judge that in order to make that above-mentioned hydraulic control is oily in deciliter flow operation process valve 9 and working connection switching valve 8 have good stationarity; Said first control oil channel 10 is provided with first damping plug 4 between the hydraulic control interface of said hydraulic control oil judgement valve 9 and said working connection switching valve 8, said second control oil channel 11 is provided with second damping plug 6.More preferably, the damping hole of said first damping plug 4 and second damping plug 6 is respectively thin-walled throttle orifice (being also referred to as the thin-walled damping hole).Because the damping of thin-walled throttle orifice receives the influence of oil temperature less, this can guarantee the stability of the utility model hydraulic control deciliter flow control device operation better.
In addition; Conventional measure as Hydraulic Field; Owing to always there is the seepage of trace between spool and the valve cavity wall; Leak into the sensitivity that hydraulic oil in the spring chamber has influence on valve operation in order to make, the hydraulic control of a utility model deciliter flow liquid control device also comprises oil return circuit 14, and this oil return circuit 14 judges that with said hydraulic control oil valve 9 and working connection switching valve 8 spring chamber separately are communicated with respectively.
As a kind of selectable preferred implementation; As shown in Figure 1; This hydraulic control deciliter flow control device can also comprise the first induced pressure oil circuit 15 and the second induced pressure oil circuit 16 on other two oil circuit interfaces that are connected respectively to said working connection switching valve 8; This first induced pressure oil circuit 15 and the second induced pressure oil circuit 16 are interconnected under the spool of said main switching valve is in the normal state the state of conduction position, are at the spool of said main switching valve under the state of controlled blocking position to cut off each other.This first induced pressure oil circuit 15 and the second induced pressure oil circuit 16 are mainly used in the load pressure signal of the system of feedback hydraulic system when shunting or interflow work; This obviously is to understand easily to those skilled in the art; The working pressure of hydraulic system depends on induced pressure; When being connected to the first induced pressure oil circuit 15 and the second induced pressure oil circuit 16 on the working oil path, the pressure conductive properties of hydraulic oil makes above-mentioned induced pressure oil circuit can feed back induced pressure more accurately.
As can be seen from Figure 1; Above-mentioned hydraulic control oil judges that valve 9 and working connection switching valve 8 are hydraulic control two position switching valves; The internal communication relation of these hydraulic control two position switching valves is not a standard valve; Therefore in above-mentioned technical characteristics, define its valve element position and connected relation separately, this can design the mechanical entities structure of above-mentioned valve element position of multiple realization and connected relation to those skilled in the art.Hydraulic control oil is judged valve 9 and working connection switching valve 8 preferred hydraulic control two position switching valves, mainly is because more simple on structure realizes.Certainly, this hydraulic control oil judges that valve 9 and working connection switching valve 8 adopt hydraulic control three position directional valves etc. also to be fine, and only need not use a position in three working positions of spool or make this position get final product as other purposes in hydraulic Design this moment.In a word, its way of realization can be various, is not limited to the detail among Fig. 1.
The technological scheme of more than describing is the technological scheme that takes out the relative broad of the formed protection domain of hydraulic pressure annexation that Fig. 1 shows; On this basis; More intuitively; The hydraulic control of the utility model deciliter flow control device can form independently product so that carry out market sale; For example Fig. 2 is to stand-alone product (being not limited to the shape of product structure shown in the figure certainly) shown in Figure 5; Under this situation; A said hydraulic control deciliter flow control device is provided with first oil inlet P 1, second oil inlet P 2, the first control port K1 and the second control port K2; Said hydraulic control oil judges that valve 9 and working connection switching valve 8 are positioned at the inside of said hydraulic control deciliter flow control device, and the said first oil-feed oil circuit 12, the second oil-feed oil circuit 13, first control oil channel 10 and second control oil channel 11 are the internal oil passages of said hydraulic control deciliter flow control device, and this first oil-feed oil circuit 12, the second oil-feed oil circuit 13, first control oil channel 10 and second control oil channel 11 are both port of origination with said first oil inlet P 1, second oil inlet P 2, the first control port K1 and the second control port K2 respectively.Like this; When the hydraulic control deciliter flow control device that this is formed stand-alone product is installed in the hydraulic system of engineering mechanical device; For example crane is with between the duplex pump fuel feeding hydraulic control combined operation valve time; First oil inlet P 1 can insert the output circuit of a pump in the duplex pump; Second oil inlet P 2 can insert the output circuit of another pump in the duplex pump, and the first control port K1 can insert outside first control oil channel (the for example hydraulic control of guide's hydraulic handle of hoist hydraulic control combined operation valve oil), and the second control port K2 can insert outside second control oil channel (the for example hydraulic control of another guide's hydraulic handle oil).
Under the optimal way; Above-mentioned hydraulic control deciliter flow control device can also comprise oil return inlet T; The inside of this hydraulic control deciliter flow control device comprises oil return circuit 14; This oil return circuit 14 is a both port of origination with said oil return inlet T, and judges that with said hydraulic control oil valve 9 and working connection switching valve 8 spring chamber separately are communicated with respectively.
Selectively; The above-mentioned hydraulic control deciliter flow control device that forms stand-alone product also comprises the first induced pressure hydraulic fluid port LS1 and the second induced pressure hydraulic fluid port LS2; This hydraulic control deciliter flow control device inside comprises the first induced pressure oil circuit 15 and the second induced pressure oil circuit 16 on other two oil circuit interfaces that are connected respectively to said working connection switching valve 8; This first induced pressure oil circuit 15 and the second induced pressure oil circuit 16 are both port of origination with the said first induced pressure hydraulic fluid port LS1 and the second induced pressure hydraulic fluid port LS2 respectively; And this first induced pressure oil circuit 15 and the second induced pressure oil circuit 16 are interconnected under the spool of said main switching valve is in the normal state the state of conduction position, are at the spool of said main switching valve under the state of controlled blocking position to cut off each other.
Understand the technique scheme of the utility model more intuitively in order to help those of ordinary skill; A kind of concrete way of realization that is more preferably of the utility model is described to entity structure shown in Figure 5 below in conjunction with Fig. 2; Apparently; In Fig. 2 to Fig. 5, this hydraulic control deciliter flow control device forms independently integral product.
Extremely shown in Figure 5 like Fig. 2; This hydraulic control flow-dividing control device comprises valve body 7; Be formed with two valve pockets in this valve body 7; Be that working connection switches valve pocket and hydraulic control oil is judged valve pocket, be combined with working connection in this working connection switching valve pocket and switch spool 2 and switch valve core spring 1, to constitute above-mentioned working connection switching valve 8; Said hydraulic control oil judges that being combined with hydraulic control oil in the valve pocket judges spool 2 and judge valve core spring 3, judges valve 9 to constitute above-mentioned hydraulic control oil.Know ground to those skilled in the art; Working connection switching valve 8 and hydraulic control oil switching valve why can above-mentioned connection or handoff relation; Be to form matching relationship through spool and valve pocket inwall; Thereby form a plurality of can be according to the moving and the oil pocket of mutual conduction or cut-out of spool, these oil pockets are not limited to specific forms, these oil pockets will specify hereinafter among Fig. 2 to Fig. 5.
Referring to Fig. 2 and Fig. 3; Said working connection switching valve 8 judges that with hydraulic control oil valve 9 is hydraulic control two position switching valves; Belong to the guiding valve type, wherein, the lower end of working connection switching spool 2 is equipped with and is switched valve core spring 1; Be formed with liquid controling cavity between the inwall of upper end part and working connection switching valve pocket and the plug, i.e. first hydraulic control among Fig. 2 and Fig. 3 oil acting chamber 710.Switch spool 2 beginnings from this first hydraulic control oil acting chamber 710 along working connection; In turn be formed with the second induced pressure oil pocket, the first induced pressure oil pocket, second oil suction chamber and first oil suction chamber between the inwall of working connection switching spool 2 and said working connection switching valve pocket; Wherein, Do not carrying out hydraulic control when operation, working connection switches spool 2 conduction position that under the effect of switching valve spring 1, is in the normal state, and this moment, the first induced pressure oil pocket and the second induced pressure oil pocket were interconnected; Be interconnected between first oil pocket and second oil pocket, thus the interflow of realizing two oil-feed oil circuits.When entering has hydraulic control oil in first hydraulic control oil acting chamber 710; Under the pressure effect of hydraulic control oil; Working connection switching spool 2 overcomes the elastic force that switches valve core spring 1 and moves down, thereby moves to controlled blocking position, and this moment, the first induced pressure oil pocket and the second induced pressure oil pocket cut off each other; Also cut off each other between first oil suction chamber and second oil suction chamber; Thereby realize the shunting of two oil-feed oil circuits, this moment, these two oil-feed oil circuits supplied to hydraulic actuator separately, influence complimentary to one another separately.Referring to Fig. 4; The valve body 7 of this hydraulic control deciliter flow control device is provided with first filler opening 701 (corresponding to the P1 among Fig. 1), second filler opening 702 (corresponding to the P2 among Fig. 1), the first induced pressure hydraulic fluid port 703 (corresponding to the LS1 among Fig. 1) and the second induced pressure hydraulic fluid port 704 (corresponding to the LS2 among Fig. 1); Correspondingly, first filler opening 701, second filler opening 702, the first induced pressure hydraulic fluid port 703 and the second induced pressure hydraulic fluid port 704 are communicated with above-mentioned first oil suction chamber, second oil suction chamber, the first induced pressure oil pocket and the second induced pressure oil pocket respectively through being formed on valve body 7 inner oil ducts.Like this; Can be connected with outside oil circuit respectively through this first filler opening 701, second filler opening 702, the first induced pressure hydraulic fluid port 703 and the second induced pressure hydraulic fluid port 704, thereby can be easily the hydraulic control deciliter flow control device of the utility model be connected in the hydraulic system.
Likewise, hydraulic control oil judges that the left end of spool is provided with judgement valve core spring 3, forms liquid controling cavity, i.e. second hydraulic control among Fig. 2 and Fig. 3 oil acting chamber 712 between the inwall of the other end and hydraulic control oil judgement valve pocket and the corresponding plug.From these second hydraulic control oil acting chamber, 712 beginnings; Judge spool 5 along hydraulic control oil; In turn be formed with second hydraulic control oil introduction chamber 711, first hydraulic control oil introduction chamber 708 and the oily communicated cavity 709 of first hydraulic control between the inwall of this hydraulic control oil judgement spool 5 and affiliated hydraulic control oil judgement valve pocket; Wherein, be interconnected through oil duct between second hydraulic control oil introduction chamber 711 and second hydraulic control oil acting chamber 712, and the oil duct of between is provided with second damping plug 6; First hydraulic control oil communicated cavity 709 is interconnected with above-mentioned first hydraulic control oil acting chamber 710 through being formed on the oil ducts in the valve body 7, and oil duct that can between is provided with first damping plug 4.The damping sky of first damping plug 4 and second damping plug 6 is respectively the thin-walled damping hole.Hydraulic control oil judges that spool 5 has the normality primary importance and the controlled second place; Wherein, When in second hydraulic control oil acting chamber 712, not getting into hydraulic control oil; Hydraulic control oil judges that spool 5 is in the normality primary importance under the effect of judging valve core spring 3, is in the state of mutual partition between first hydraulic control this moment oil introduction chamber 708 and first hydraulic control oil communicated cavity 709.When entering has hydraulic control oil in second hydraulic control oil acting chamber 712; Hydraulic control oil judges that spool 5 overcomes judgement valve core spring 3 and enters into the controlled second place under the pressure effect of hydraulic control oil; Be interconnected between first hydraulic control this moment oil introduction chamber 708 and first hydraulic control oil communicated cavity 709; Thereby can hydraulic control oil guiding first hydraulic control oil acting chamber 710 in first hydraulic control oil introduction chamber 708 be switched spool 2 change working positions can drive above-mentioned working connection.Referring to shown in Figure 5; Also be formed with first control port 706 (corresponding to the K1 among Fig. 1) and second control port 707 (for the K2 among Fig. 1) on the valve body 7 of said hydraulic control deciliter flow control device, this first control port 706 and second control port 707 are respectively through being formed on oil duct communication channel first oily introduction chamber 708 of control and the oily introduction chamber 708 of second control in the valve body 7.Through this first control port 706 and second control port 707; Said hydraulic control deciliter flow control device can be connected on the external control oil circuit; For example; When the hydraulic control deciliter flow control device with the utility model is applied to crane; Can be through this first control port 706 and second control port 707 be connected respectively to two guide's hydraulic control handle (a kind of operating grips of crane combined operating valve through oil pipe; Improve the operation portability through guide oil) guide's oil circuit on, the guide oil that can utilize guide's hydraulic control handle like this is as hydraulic control oil, and makes the action of said hydraulic control deciliter flow control device to keep synchronism preferably with the operation of guide's hydraulic control handle.
In addition, Fig. 2 also is provided with return opening 705 to the valve body 7 of hydraulic control deciliter flow control device shown in Figure 5, and said switching valve core spring 1 is communicated with this return opening 705 through the oil duct that is formed in the valve body 7 respectively with the spring chamber of judging valve core spring 3.
When using; Fig. 2 extremely hydraulic control that forms integral product deciliter flow control device shown in Figure 5 can directly connect in the hydraulic system of engineering mechanical device; For example be connected in the duplex pump fuel feeding hydraulic system of crane; Under this situation; First control port of this hydraulic control deciliter flow control device and second control port can be external on guide's hydraulic control handle that hydraulic control oil can be provided, and first filler opening and second filler opening can be connected respectively on the oil-feed oil circuit of corresponding hydraulic control combined operation valve.Wherein the first control port K1 can directly be connected with the delivery outlet of guide's hydraulic control handle with the second control port K2, also can gang up fuel feeding with pilot control opening through hydraulic control combined operation valve is inner.Like this, hydraulic control oil judges that spool 5 can judge the action of guide's hydraulic control handle, and then definite working connection switches the whether action of spool 2, and whether the switching that working connection switches spool 2 directly controls it is divided the interflow.
Be further to help those of ordinary skill to understand the technological scheme of the utility model, below just the working principle of Fig. 1 hydraulic control deciliter flow control device extremely shown in Figure 5 carry out simple description.For example; Should be connected in the duplex pump fuel feeding hydraulic system of crane by hydraulic control deciliter flow control device; And first control port and second control port are connected respectively on guide's oil circuit of two guide's hydraulic control handles of hydraulic control combined operation valve, and it is divided into is four working staties:
First working state: when two guide's hydraulic control handles are not worked; Referring to Fig. 1; The first control port K1 and the second control port K2 be build-up pressure not, and do not exist fluid control pressure in second control oil channel 11 this moment, therefore can't overcome the spring resistance that hydraulic control oil is judged valve 9; Hydraulic control this moment oil judges that valve 9 is in the state that first control oil channel 10 is cut off shown in Figure 1; Simultaneously, owing to do not have fluid control pressure in second control oil channel 11, therefore can't overcome the spring resistance of working connection switching valve 8; Working connection switching valve 8 is in the win state of working oil path 12 and 13 conductings of second working oil path of shown in Figure 1 making, thus first working oil path 12 and second working oil path, 13 interflow.Particularly; Referring to Fig. 2; First control port 706 (corresponding to the first control port K1 of Fig. 1, down together), second control port 707 (corresponding to the second control port K2 of Fig. 1, down together) is build-up pressure not; No propagation of pressure is to first hydraulic control oil acting chamber 710 and second hydraulic control oil acting chamber 712; Working connection switches spool 2 and hydraulic control oil judgement spool 5 is in normality conduction position shown in Figure 2 and normality primary importance respectively respectively under the effect of switching valve core spring 1 and judgement valve core spring 3, and first filler opening 701 (corresponding to first oil inlet P 1 of Fig. 1, down together) and second filler opening 702 are (corresponding to first oil inlet P 2 of Fig. 1; Switch spool 2 through working connection down together) and be communicated with, thereby make the outside oil feeding line that is connected on first filler opening 701 and second filler opening 702 collaborate.
Second working state: when having only the corresponding guide's hydraulic control handle of first control port to work; Because guide's hydraulic control handle of second control port is not worked; Referring to shown in Figure 1, do not exist fluid control pressure in second control oil channel 11 this moment, therefore can't overcome the spring resistance that hydraulic control oil is judged valve 9; Hydraulic control this moment oil judges that valve 9 is in the state that first control oil channel 10 is cut off shown in Figure 1; First control oil channel 10 is owing to be in dissengaged positions, so hydraulic control oil can't arrive the hydraulic control interface of working connection switching valve 8, therefore can't overcome the spring resistance of working connection switching valve 8; Working connection switching valve 8 is in the win state of working oil path 12 and 13 conductings of second working oil path of shown in Figure 1 making, thus first working oil path 12 and second working oil path, 13 interflow.Particularly; Referring to Fig. 2, that is to say, when having only first control port, 706 corresponding guide's hydraulic control handles to work; Because guide's hydraulic control handle of second control port 707 is not worked; So second control port, 702 no pressure, thereby there is not pressure in second hydraulic control oil introduction chamber 711 and second hydraulic control oil acting chamber 712 yet, hydraulic control oil judges that spool 5 is in right end position under the effect of judgement valve core spring 3; Be the normality primary importance, first hydraulic control oil introduction chamber 708 and first hydraulic control oil communicated cavity 709 are cut off; Simultaneously; First control port 706 has oil pressure; First control port 706 transfers the pressure to first hydraulic control oil introduction chamber 708; But first hydraulic control oil introduction chamber 708 and first hydraulic control oil communicated cavity 709 are cut off because hydraulic control oil is judged spool 5; Therefore the hydraulic control oil of first control port, 706 inputs can not arrive first hydraulic control oil acting chamber 710, thereby working connection switching spool 2 is in normality conduction position (upper end) shown in Figure 2, and first filler opening 701 is supplied with the manipulation valve block of first control port, the 706 corresponding guide's hydraulic control handle controls that are connected through working connection switching spool 2 interflow with second filler opening 702 and worked.
The 3rd working state: when have only second control port corresponding the work of guide's hydraulic control handle the time; Suitably referring to Fig. 1; Although this moment, guide oil judged that valve 9 makes guide oil judge that valve 9 is with 10 conductings of first control oil channel under the fluid control pressure of second control oil channel 11; But this moment is not owing to there is the supply of hydraulic control oil in first control oil channel; So can't overcome the spring resistance of working connection switching valve 8, working connection switching valve 8 is in the win state of working oil path 12 and 13 conductings of second working oil path of shown in Figure 1 making, thus first working oil path 12 and second working oil path, 13 interflow.Particularly; Referring to Fig. 2; That is to say that when having only guide's hydraulic control handle work of second control port 702, second control port, 702 propagation of pressure are to second hydraulic control oil acting chamber 712; Overcome the active force of judging valve core spring 3 and promote hydraulic control oil judgement spool 5, first hydraulic control oil introduction chamber 708 and first hydraulic control oil communicated cavity 709 are communicated with to the controlled second place (left end) shown in Figure 3; But owing to do not work with first control port, 706 corresponding guide's hydraulic control handles; First control port, 706 no pressure; Though hydraulic control oil is judged spool 5 first hydraulic control oil introduction chamber 708 and first hydraulic control oil communicated cavity 709 is communicated with; But because this control oil channel does not have propagation of pressure; First hydraulic control oil acting chamber, 710 no pressure, working connection switching spool 2 is in normality shown in Figure 2 to conduction position (upper end), and first filler opening 701 switches spool 2 interflow with second filler opening 702 through working connection supplies with the manipulation valve block work of controlling with second control port, the 707 corresponding guide's hydraulic control handle controls that are connected.
The 4th working state: when guide's hydraulic control handle of first control port 7 and second control port correspondence is worked simultaneously; Suitably referring to shown in Figure 1; First control oil channel 10 and second control oil channel 11 all have hydraulic control oil supply, and guide oil is judged against the force of the spring under the effect of the fluid control pressure of valve 9 in second control oil channel 11 and make control oil channel 10 conductings of winning that the hydraulic control oil in first control oil channel 10 arrives working connection switching valve 8; Thereby overcome the spring resistance of this working connection switching valve; The spool that promotes this working connection switching valve 8 moves, and cuts off the first oil-feed oil circuit 12 and the second oil-feed oil circuit 13 thus, thereby realizes shunting.Particularly; Referring to shown in Figure 3; That is to say that when guide's hydraulic control handle of first control port 706 and second control port 702 was worked simultaneously, second control port, 702 pressure were delivered to second hydraulic control oil acting chamber 712 via second hydraulic control oil introduction chamber 711; Overcome the active force of judging valve core spring 3 and promote hydraulic control oil judgement spool 5, first hydraulic control oil introduction chamber 708 is communicated with first hydraulic control oil communicated cavity 709 to the controlled second place (left end) shown in Figure 3; The hydraulic oil of first control port 706 simultaneously passes to first hydraulic control oil introduction chamber 708; First hydraulic control oil communicated cavity 709 is delivered to first hydraulic control oil acting chamber 710 with hydraulic oil through first damping plug 4; This hydraulic control oil pressure overcomes the active force that switches valve core spring 1 and promotes working connection switching spool 2 to the controlled blocking position (lower end) shown in the diagram 4; Connection oil circuit between first filler opening 701 and second filler opening 702 is cut off; Because first induced pressure hydraulic fluid port 703 of feedback fuel injection pressure signal and the oil circuit between the second induced pressure hydraulic fluid port 704 also are cut off simultaneously; Thereby realize shunting, the outside oil feeding line that first filler opening 701 is connected with second filler opening 702 is respectively corresponding separately control valve and supplies with hydraulic oil, is independent of each other each other.
Wherein, Be respectively equipped with first damping plug 4 and second damping plug 6 on the oil circuit between above-mentioned first hydraulic control oil communicated cavity 709 and first hydraulic control oil acting chamber 710 and on the oil circuit between second hydraulic control oil introduction chamber 711 and second hydraulic control oil acting chamber 712; Like this; Switch spool 2 at working connection and judge in spool 5 handoff procedures all have corresponding damping plug to cushion in its control oil channel, can prevent to occur in the handoff procedure compression shock effectively with hydraulic control oil.
The key technology main points of the utility model hydraulic control deciliter flow control device are: this hydraulic control deciliter flow control device adopts the hydraulic control mode to control fully, thereby after in being installed to the hydraulic system of engineering mechanical device, can utilize the existing control oil sources of hydraulic system easily; For example, as stated, the hydraulic control deciliter flow control device of the utility model is connected under the situation of hydraulic system of crane; This hydraulic control deciliter flow control device can utilize the guide oil of guide's hydraulic control handle output of hydraulic control combined operating valve, and its pressure flow is stable, and pressure is low; Variation in pressure is little in the control procedure, and impact reduces, and the stability of a system is improved; Its speed of response and lever operated being consistent, simultaneously, owing to be the hydraulic control signal that directly adopts; Compare with existing automatically controlled switching and to have saved switch control, handle easier.In addition, under optimal way, first damping plug 4 and the damping hole of second damping plug 6 that are arranged on the corresponding control oil channel are the thin-walled throttle orifice, and its damping is not influenced by oily temperature, can guarantee the stability of a system.
In addition; The utility model also is confined to some details in the above-mentioned mode of execution; Fig. 6 has shown the another kind of selectable embodiment of the utility model, and it judges that with above-mentioned hydraulic control oil valve 9 replaces with hydraulic control individual event valve 17, wherein; Second control oil channel 11 is connected on the hydraulic control interface of this hydraulic control individual event valve 17; First control oil channel 10 is connected to via said hydraulic control individual event valve 17 on the hydraulic control interface of working connection switching valve 8, and this first control oil channel 10 is cut off under normality first state of said hydraulic control individual event valve 17, and conducting under controlled second state of this hydraulic control individual event valve 17.Hydraulic control individual event valve 17 belongs to known valve, and its working state is known, but its annexation then exists forward, reverse difference.Hydraulic control individual event valve 17 will make the control oil channel 10 of winning under normality first state, cut off; And in the controlled second state conducting; Then first control oil channel 10 must at first be connected to the end that ends of hydraulic control individual event valve 17; Even, be connected on the hydraulic control interface of working connection switching valve 8 via this hydraulic control individual event valve 17 then so that first control oil channel, 10 supply hydraulic fluids also can't be pushed valve ball open.In addition; Other structure all mode of execution with shown in Figure 1 is identical; Certainly the hydraulic control deciliter flow control device of this mode of execution shown in Figure 6 promptly can be directly connected in the hydraulic system of engineering mechanical device through each independent valve, also can form independently product.Those skilled in the art analyze schematic diagram shown in Figure 6, and it also has four kinds of working staties, and the effect that reaches with above-mentioned mode of execution shown in Figure 1 is identical.Referring to shown in Figure 6; When the first control port K1 had oil separately, because the second control port K2 does not have control oil, Pilot operated check valve 17 was in closed condition; First control oil channel 10 is cut off; Do not have hydraulic control oil to be fed to working connection switching valve 8, working connection switching valve 8 is on state shown in Figure 6, thereby the first oil-feed oil circuit 12 and 13 conductings of the second oil-feed oil circuit realize the interflow.When the second control port K2 has oil separately, though Pilot operated check valve 17 conductings, no-oil-supply in first control oil channel 10, so working connection switches spool 8 and still makes win oil-feed oil circuit 12 and the second oil-feed oil circuit 13 be in the interflow state; When the first control port K1 and the second control port K2 have oil simultaneously; Pilot operated check valve 17 receives the control of second control oil channel 11 and opens; 10 conductings of first control oil channel, thus hydraulic control oil arrives working connection switching valve 8, control working connection switching valve 8 change states; Make win oil-feed oil circuit 12 and 13 cut-outs of the second oil-feed oil circuit, thereby realize shunting; When the first control port K1 and the equal no-oil-supply of the second control port K2; This moment, Pilot operated check valve 17 was in closed condition; There is not hydraulic control oil simultaneously in first control oil channel 10 yet; Therefore working connection switching valve 8 still is in the interflow state, and first oil inlet P 1 and second oil inlet P 2 did not have working oil and got into because hydraulic actuator is not generally worked this moment certainly.This mode of execution shown in Figure 6 is actually a kind of variant of mode of execution shown in Figure 1, so both technological merits and effect are essentially identical.Certainly; The annexation of first control oil channel 10 and second control oil channel 11 also can be exchanged; The effect of its realization also is the same, is about to first control oil channel 10 and is connected on the hydraulic control interface of hydraulic control individual event valve 17, and be connected to second control oil channel 11 on the hydraulic control interface of working connection switching valve 8 via hydraulic control individual event valve 17; This only is the difference in the word processing, and technological scheme itself is still identical.Comprise under the situation of valve body 7 that at said hydraulic control deciliter flow control device hydraulic control individual event valve 17 also can be formed directly in the valve body 7 through valve pocket and cooperating of its spool (one-way valve is valve ball).
Hydraulic control oil shown in Fig. 1 judges that valve 9 is not limited to adopt hydraulic control individual event valve shown in Figure 6 17 to replace; Win in the control oil channel 10 and second control oil channel 11 both when all supplying hydraulic control oil as long as it can realize making, make hydraulic control oil in this first control oil channel 10 or second control oil channel 11 be fed on the hydraulic control interface of working connection switching valve 8 and get final product.Those skilled in the art can take multiple mode to realize above-mentioned connected relation through the design of corresponding valve and combination brake switch and proporting.
Above each embodiment described of cumulated volume model utility; The design of the general technical of the hydraulic control of the utility model deciliter flow control device may be summarized to be: this hydraulic control deciliter flow control device comprises hydraulic control valve, working connection switching valve 8, first control oil channel 10, second control oil channel 11, the first oil-feed oil circuit 12 and the second oil-feed oil circuit 13; Said working connection switching valve 8 is the hyraulic controlled type selector valve; The said first oil-feed oil circuit 12 and the second oil-feed oil circuit 13 are connected to two oil circuit interfaces of this working connection switching valve 8; The spool of this working connection switching valve 8 has normality conduction position and the controlled blocking position that is used to make said first oil-feed oil circuit 12 and the cut-out of the second oil-feed oil circuit, 13 connected sums at least; Said first control oil channel 10 is connected in the hydraulic control interface of said working connection switching valve 8 via said hydraulic control valve; Said second control oil channel 11 is connected in the hydraulic control interface of said hydraulic control valve, and controls this hydraulic control valve conducting or cut-out and said first control oil channel 10.
Wherein, First control oil channel 10 of the hydraulic control of the utility model deciliter flow control device and second control oil channel 11 can preferably be connected on the guide's oil sources or guide's oil circuit of corresponding guide's hydraulic control handle of engineering mechanical device as stated; Certainly; The utility model is not limited to this, and it also can be connected on other control oil sources or control oil channel in the hydraulic system of engineering mechanical device, thereby can realize deciliter current control of oil circuit according to application need.
The hydraulic control of the utility model deciliter flow control device; Mainly be applicable on deciliter current control of the used hydrovalve oil circuit of engineering machinery; Be particularly useful for crane with on the duplex pump fuel feeding hydraulic control combined operation valve, for example be connected between two valve block unit of combined operation valve.
Can find out by last description; The hydraulic control of the above-mentioned embodiment of a utility model deciliter flow control device has following technological merit: the first, and this hydraulic control deciliter flow control device adopts the hydraulic control mode to control a deciliter flow operation fully, thereby can utilize the ready-made control oil sources of engineering mechanical device hydraulic system; The guide oil of guide's hydraulic control handle of crane output for example; The control oil supply pressure stability of flow of engineering mechanical device, and pressure is low, and variation in pressure is little in the control procedure; Impact little, thereby can make that the stability of hydraulic system is significantly improved in deciliter flow operation process.Second; Deciliter current control oil sources utilizes the existing control oil sources of engineering mechanical device, guide's oil sources of guide's hydraulic control handle of crane output for example, and the act of operation of its speed of response and hydraulic control handle is consistent; Simultaneously; Owing to be the hydraulic control signal that directly adopts, compare with existing automatically controlled switching and saved switch control, handle easier.In addition, be control relation between two hydraulic control valve of this hydraulic control deciliter flow control device, its features simple structure, convenient for installation and maintenance.
In addition; The utility model selects for use deciliter stream of two-way oil sources to narrate, but is not limited to deciliter current control of two-way oil sources, when three tunnel and three road above oil sources need deciliter current control; Also can adopt this controlling method that this control gear is carried out the control that suitable improvement realizes multichannel branch interflow; Regardless of its technological scheme, as long as it has comprised the technical conceive of deciliter current control of the utility model two-way oil sources, it all belongs to the protection domain of the utility model.
More than combine accompanying drawing to describe the preferred implementation of the utility model in detail; But; The utility model is not limited to the detail in the above-mentioned mode of execution; In the technical conceive scope of the utility model, can carry out multiple simple variant to the technological scheme of the utility model, these simple variant all belong to the protection domain of the utility model.For example; Can the first hydraulic control hydraulic fluid port P1 among Fig. 1 be changed into and be used to control hydraulic control oil and judge that valve 9, the second control port P2 change into and optionally control working connection switching valve 8 that the control function of its realization is the same; Certainly this only is the difference of word processing, and technological scheme is that essence is identical.Therefore, annotated at this is that above-mentioned " first ", " second " only for describing clear convenient the interpolation, are not represented between two control oil channel, two control ports etc. itself to have substantial difference.
Need to prove that in addition each the concrete technical characteristics described in above-mentioned embodiment under reconcilable situation, can make up through any suitable manner.For fear of unnecessary repetition, the utility model is to the explanation no longer separately of various possible compound modes.
In addition, also can carry out combination in any between the various mode of execution of the utility model, as long as its thought without prejudice to the utility model, it should be regarded as content disclosed in the utility model equally.
Claims (15)
1. hydraulic control deciliter flow control device; It is characterized in that; Comprise hydraulic control valve, working connection switching valve (8), first control oil channel (10), second control oil channel (11), the first oil-feed oil circuit (12) and the second oil-feed oil circuit (13); Said working connection switching valve (8) is the hyraulic controlled type selector valve; The said first oil-feed oil circuit and the second oil-feed oil circuit are connected to two oil circuit interfaces of this working connection switching valve; The spool of this working connection switching valve (8) has at least and is used to make the normality conduction position that the said first oil-feed oil circuit is communicated with the second oil-feed oil circuit and the controlled blocking position of cut-out, and said first control oil channel is connected in the hydraulic control interface of said working connection switching valve via said hydraulic control valve, and said second control oil channel is connected in the hydraulic control interface of said hydraulic control valve and controls this hydraulic control valve conducting or cut off said first control oil channel.
2. hydraulic control deciliter flow control device according to claim 1; It is characterized in that; Said hydraulic control valve is that the hydraulic control oil of liquid controlled reversing valve-type is judged valve (9), and this hydraulic control oil judges that the spool of valve has the normality primary importance and the controlled second place that is used to make this first control oil channel conducting that is used to make said first control oil channel (10) cut-out at least.
3. hydraulic control deciliter flow control device according to claim 2 is characterized in that, said hydraulic control oil judges that valve (9) is hydraulic control two position switching valves.
4. hydraulic control deciliter flow control device according to claim 1; It is characterized in that; Said hydraulic control valve is Pilot operated check valve (17), and said first control oil channel (10) is cut off under normality first state of said Pilot operated check valve, and conducting under controlled second state of this Pilot operated check valve.
5. hydraulic control deciliter flow control device according to claim 1; It is characterized in that; Said first control oil channel (10) is provided with first damping plug (4) between the hydraulic control interface of said hydraulic control valve and said working connection switching valve (8), said second control oil channel (11) is provided with second damping plug (6).
6. hydraulic control deciliter flow control device according to claim 1 is characterized in that, the damping hole of said first damping plug (4) and second damping plug (6) is the thin-walled damping hole.
7. hydraulic control deciliter flow control device according to claim 1; It is characterized in that said first oil circuit (10) and second control oil channel (11) are connected to the control oil sources or the control oil channel of the hydraulic system of the engineering mechanical device that said hydraulic control deciliter flow control device installs.
8. hydraulic control deciliter flow control device according to claim 7 is characterized in that, the control oil sources of said hydraulic system or control oil channel are guide's oil sources or guide's oil circuit of guide's hydraulic control handle of said engineering mechanical device.
9. hydraulic control deciliter flow control device according to claim 1; It is characterized in that; This hydraulic control deciliter flow control device is provided with first filler opening (P1), second filler opening (P2), first control port (K1) and second control port (K2); Said hydraulic control oil judges that valve (9) and working connection switching valve (8) are positioned at the inside of said hydraulic control deciliter flow control device; The said first oil-feed oil circuit (12), the second oil-feed oil circuit (13), first control oil channel (10) and second control oil channel (11) are the internal oil passages of this hydraulic control deciliter flow control device, and this first oil-feed oil circuit, the second oil-feed oil circuit, first control oil channel and second control oil channel are both port of origination with said first filler opening, second filler opening, first control port and second control port respectively.
10. hydraulic control deciliter flow control device according to claim 1 is characterized in that, this hydraulic control deciliter flow liquid control device also comprises oil return circuit (14), and this oil return circuit is communicated with respectively with said hydraulic control valve and working connection switching valve (8) spring chamber separately.
11. hydraulic control according to claim 10 deciliter flow control device; It is characterized in that; This hydraulic control deciliter flow control device is provided with return opening (T), and said oil return circuit (14) is the internal oil passages of this hydraulic control deciliter flow control device, and this oil return circuit is a both port of origination with said return opening.
12. hydraulic control according to claim 1 deciliter flow control device; It is characterized in that; This hydraulic control deciliter flow control device also comprises the first induced pressure oil circuit (15) and the second induced pressure oil circuit (16) on other two oil circuit interfaces that are connected to said working connection switching valve (8); This first induced pressure oil circuit and the second induced pressure oil circuit are at the spool of said main switching valve under the state of said normality conduction position and are interconnected, and are at the spool of said main switching valve under the state of said controlled blocking position to cut off each other.
13. hydraulic control according to claim 12 deciliter flow control device; It is characterized in that; This hydraulic control deciliter flow control device is provided with the first induced pressure hydraulic fluid port (LS1) and the second induced pressure hydraulic fluid port (LS2); The said first induced pressure oil circuit (15) and the second induced pressure oil circuit (16) are the internal oil passages of this hydraulic control deciliter flow control device, and this first induced pressure oil circuit and the second induced pressure oil circuit are both port of origination with the said first induced pressure hydraulic fluid port and the second induced pressure hydraulic fluid port respectively.
14. according to each described hydraulic control deciliter flow control device in the claim 1 to 13; It is characterized in that; This hydraulic control divides interflow device to comprise valve body (7), forms valve pocket in this valve body (7), and this valve pocket cooperates with working connection switching spool (2) and forms said working connection switching valve (8).
15. according to each described hydraulic control deciliter flow control device in the claim 1 to 13, said valve body (7) also is formed with another valve pocket, this another valve pocket cooperates with the spool of said hydraulic control valve and forms said hydraulic control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204000638U CN202251198U (en) | 2011-10-20 | 2011-10-20 | Hydraulic shunting and converging control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204000638U CN202251198U (en) | 2011-10-20 | 2011-10-20 | Hydraulic shunting and converging control device |
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| Publication Number | Publication Date |
|---|---|
| CN202251198U true CN202251198U (en) | 2012-05-30 |
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| CN2011204000638U Expired - Fee Related CN202251198U (en) | 2011-10-20 | 2011-10-20 | Hydraulic shunting and converging control device |
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| CN (1) | CN202251198U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105110192A (en) * | 2015-07-31 | 2015-12-02 | 徐州徐工液压件有限公司 | Confluence control device of hydraulic crane |
| CN105465088A (en) * | 2015-12-22 | 2016-04-06 | 徐州徐工液压件有限公司 | Automatic multi-way-valve non-confluent adaptation device |
-
2011
- 2011-10-20 CN CN2011204000638U patent/CN202251198U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105110192A (en) * | 2015-07-31 | 2015-12-02 | 徐州徐工液压件有限公司 | Confluence control device of hydraulic crane |
| CN105110192B (en) * | 2015-07-31 | 2018-03-20 | 徐州徐工液压件有限公司 | A kind of hydraulic crane collaborates control device |
| CN105465088A (en) * | 2015-12-22 | 2016-04-06 | 徐州徐工液压件有限公司 | Automatic multi-way-valve non-confluent adaptation device |
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Granted publication date: 20120530 Termination date: 20201020 |