CN202914810U - Confluence multi-way valve and crane hydraulic system - Google Patents
Confluence multi-way valve and crane hydraulic system Download PDFInfo
- Publication number
- CN202914810U CN202914810U CN 201220322748 CN201220322748U CN202914810U CN 202914810 U CN202914810 U CN 202914810U CN 201220322748 CN201220322748 CN 201220322748 CN 201220322748 U CN201220322748 U CN 201220322748U CN 202914810 U CN202914810 U CN 202914810U
- Authority
- CN
- China
- Prior art keywords
- valve
- hydraulic fluid
- fluid port
- control valve
- communicated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Images
Abstract
The utility model discloses a confluence multi-way valve. The confluence multi-way valve comprises a valve body and a confluence valve, wherein the valve body integrates a first valve group and a second valve group. The first valve group comprises a first control valve, a second control valve and a first flow dividing valve; and the second valve group comprises a third control valve, a fourth control valve and a second flow dividing valve. The confluence valve is used for communicating pressure oil lines of the second valve group and the first valve group. The confluence multi-way valve is characterized by further comprising a first hydraulic control reversing valve, a second hydraulic control reversing valve and a third hydraulic control reversing valve. A structure and an oil line control mode of the multi-way valve are improved according to a confluence control mechanism, confluence of various motions is achieved by controlling the hydraulic control reversing valves, confluence of extension motions, amplitude variation motions and extensible amplitude-varying compound motions can be achieved, and working efficiency of a whole vehicle is improved remarkably. The utility model further discloses a crane hydraulic system with the confluence multi-way valve.
Description
Technical field
The utility model relates to technical field of engineering machinery, particularly is applied to the interflow multi-way valve of crane hydraulic control system.The utility model also relates to the crane hydraulic control system that is provided with described interflow multi-way valve.
Background technique
In hoist when work, utilized the arm weight of slinging, then rely on rotation of rotary table with the weight task of finishing the work from a position transfer to another one position, main action comprises master winch, secondary elevator, flexible, luffing and revolution, and wherein front four actions generally are integrated on the main valve and (are called multi-way valve).
Multi-way valve is the core component of crane hydraulic control system, and it has determined master winch, secondary elevator, flexible and the efficient of luffing four big-movements and the energy consumption level of complete machine.
Because market is more and more higher to the requirement of crane job efficient, the interflow when realizing respectively moving operation is also more and more important.
The multi-way valve that adopts in the existing crane hydraulic system only possesses hoisting system Dual-pump flow-converging function, when namely carrying out an action, gives simultaneously the elevator fuel feeding by the first oil pump and the second oil pump, to improve the working efficiency of executive component; And the action of flexible and luffing all is single oil pump feeds, has following defective:
At first, can not realize stretching, the interflow when luffing works independently;
Secondly, can not realize stretching, the interflow during the luffing composite move;
Moreover, can not realize the interflow when luffing falls with the elevator composite move.
As seen, because flexible and luffing action can only single oil pump feed, greatly reduce flexible, the speed of luffing and the operating efficiency of car load.
Therefore, how realizing the interflow of crane telescopic, luffing and flexible luffing composite move, to improve the operating efficiency of car load, is the present technical issues that need to address of those skilled in the art.
The model utility content
The first purpose of the present utility model provides a kind of interflow multi-way valve.This interflow multi-way valve can be realized the interflow of crane telescopic, luffing and flexible luffing composite move, thereby significantly improves the operating efficiency of car load.
The second purpose of the present utility model provides a kind of crane hydraulic system that is provided with described interflow multi-way valve.
In order to realize above-mentioned the first purpose, the utility model provides a kind of interflow multi-way valve, comprising:
Valve body, integrated the first valve group, second valve group, described the first valve group comprises the first control valve, the second control valve and the first diverter valve, described second valve group comprises the 3rd control valve, the 4th control valve and the second diverter valve;
Converging valve is for the pressure oil circuit of described the first valve group of conducting and second valve group;
Further comprise:
The first pilot operated directional control valve is for the feedback hydraulic fluid port that is communicated with or disconnects described the first diverter valve and the second diverter valve;
The second pilot operated directional control valve is used for being communicated with or disconnecting the feedback oil circuit of described the first valve group and the feedback hydraulic fluid port of described converging valve, is in interflow or off state thereby control described converging valve;
The 3rd pilot operated directional control valve be used for to be communicated with or to disconnect the control port of the first oil outlet of described the first control valve and described the first pilot operated directional control valve, the 3rd pilot operated directional control valve, and its control port is communicated with the first oil outlet of described the second control valve.
Preferably, the first hydraulic fluid port of described the first pilot operated directional control valve is communicated with the feedback hydraulic fluid port of described the first diverter valve, and the second hydraulic fluid port is communicated with the feedback hydraulic fluid port of described the second diverter valve;
And have two working staties: in the first working state, its first hydraulic fluid port is communicated with the second hydraulic fluid port, and in the second working state, its first hydraulic fluid port and the second hydraulic fluid port disconnect.
Preferably, the first hydraulic fluid port of described the second pilot operated directional control valve is communicated with the feedback hydraulic fluid port of described converging valve, and the second hydraulic fluid port is communicated with the feedback hydraulic fluid port of described the first control valve and the second control valve by the first shuttle valve, and the 3rd hydraulic fluid port is communicated with the return opening of described valve body;
And have two working staties: in the first working state, its first hydraulic fluid port is communicated with the 3rd hydraulic fluid port, and in the second working state, its first hydraulic fluid port is communicated with the second hydraulic fluid port.
Preferably, the first hydraulic fluid port of described the 3rd pilot operated directional control valve is communicated with the first oil outlet of described the first control valve, and the second hydraulic fluid port is communicated with the control port of described the first pilot operated directional control valve and the 3rd pilot operated directional control valve;
And have two working staties: in the first working state, its first hydraulic fluid port is communicated with the second hydraulic fluid port, and in the second working state, its first hydraulic fluid port and the second hydraulic fluid port disconnect.
Preferably, further comprise the 4th pilot operated directional control valve, be used for conducting or disconnect the control port of feedback oil circuit and described second pilot operated directional control valve of described second valve group, its control port is communicated with the first oil outlet of described the first control valve the second oil outlet and the second control valve by the second shuttle valve.
Preferably, the first hydraulic fluid port of described the 4th pilot operated directional control valve is communicated with the feedback hydraulic fluid port of described the 3rd control valve and the 4th control valve by the 3rd shuttle valve;
The control port of described the second pilot operated directional control valve is communicated with the second hydraulic fluid port of described the 4th pilot operated directional control valve and the second hydraulic fluid port of described the 3rd pilot operated directional control valve by the 4th shuttle valve;
And have two working staties: in the first working state, its first hydraulic fluid port and the second hydraulic fluid port disconnect, and in the second working state, its first hydraulic fluid port is communicated with the second hydraulic fluid port.
Preferably, the second oil outlet of described the second control valve leads to the hydraulic control bypass;
Described hydraulic control bypass is communicated with the control port of described the first pilot operated directional control valve and the second pilot operated directional control valve, and is provided with the closeouts that can install, dismantle.
Preferably, the hydraulic control bypass of the second oil outlet of described the second control valve is provided with the first one-way valve;
Described the 3rd pilot operated directional control valve is provided with the second one-way valve with the oil circuit that the first oil outlet of described the first control valve is connected.
Preferably, described the first pilot operated directional control valve is communicated with the feedback hydraulic fluid port of described the second diverter valve by the 5th shuttle valve;
The first filler opening of described the 5th shuttle valve is communicated with the feedback oil circuit of described second valve group, and the second filler opening is communicated with the second hydraulic fluid port of described the first pilot operated directional control valve, and oil outlet is communicated with the feedback hydraulic fluid port of described the second diverter valve.
Preferably, further comprise the 6th shuttle valve, its first filler opening is communicated with the first pressure hydraulic fluid port of described valve body, and the second filler opening is communicated with the second pressure hydraulic fluid port of described valve body, and oil outlet is communicated with the control port of described converging valve.
Preferably, described the first pilot operated directional control valve, the second pilot operated directional control valve and the 4th pilot operated directional control valve are the two-position two-way hydraulic control selector valve;
Described the 3rd pilot operated directional control valve is the two-position three way pilot operated directional control valve.
In order to realize above-mentioned the second purpose, the utility model also provides a kind of crane hydraulic system, comprises the first oil pump, the second oil pump, master winch oil cylinder, secondary elevator oil cylinder, telescopic oil cylinder, amplitude oil cylinder and multi-way valve; Described multi-way valve is above-mentioned each described interflow multi-way valve;
Described the first oil pump is communicated with the first pressure hydraulic fluid port of described interflow multi-way valve, and described the second oil pump is communicated with the second pressure hydraulic fluid port of described interflow multi-way valve;
The oil outlet of described the first control valve is communicated with described telescopic oil cylinder, and the oil outlet of described the second control valve is communicated with described amplitude oil cylinder;
The oil outlet of described the 3rd control valve is communicated with described secondary elevator oil cylinder, and the oil outlet of described the 4th control valve is communicated with described master winch oil cylinder.
The interflow that the utility model is realized each action by the control pilot operated directional control valve, wherein, the first pilot operated directional control valve is not when control end has pressure, the feedback hydraulic fluid port that is communicated with the first diverter valve and the second diverter valve, the feedback oil circuit that the feedback oil circuit that be responsible for stretching, luffing produces and elevator produce carries out good linking, make diverter valve while and the collaborative work of the first oil pump and the second oil pump, guarantee to realize Dual-pump flow-converging work; The second pilot operated directional control valve is responsible for controlling converging valve, and when its control end did not have pressure, converging valve was in the interflow state, and when its control end passed into pressure, converging valve was in off state; The control end that the 3rd pilot operated directional control valve is responsible for the first pilot operated directional control valve and the second pilot operated directional control valve provides pressure oil.
Because the filler opening (i.e. the first hydraulic fluid port) of the 3rd pilot operated directional control valve is communicated with first oil outlet (the high pressure hydraulic fluid port namely bounces back) of the first control valve, and control end is communicated with first oil outlet (being that luffing plays the high pressure hydraulic fluid port) of the second control valve, therefore in the situation that single movement, only when carrying out the retraction action, just can provide fluid control pressure oil to the first pilot operated directional control valve and the second pilot operated directional control valve, namely cut off the first pilot operated directional control valve and converging valve, become single oil pump feed mode, and stretch out in execution, luffing rises, during action that luffing falls, be the interflow mode of double pump fuel feeding, can realize the interflow of each action except retraction; In the situation that composite move, because the retraction action can not be collaborated, therefore retraction can not collaborate with the composite move that luffing falls, and stretch out with luffing, stretching out the composite move that rises with luffing can collaborate, in addition, because the 3rd pilot operated directional control valve is subjected to luffing to play high-pressure oil passage and controls, when the execution luffing plays action, the 3rd pilot operated directional control valve is in off state, can not provide fluid control pressure oil to the first pilot operated directional control valve and the second pilot operated directional control valve, therefore when the composite move that execution bounces back and luffing rises, also can realize the interflow, namely can realize the interflow of each composite move except retraction and luffing fall.
As mentioned above, the utility model has improved structure and the oil circuit control mode of multi-way valve according to the interflow control mechanism, can realize stretching, the interflow of luffing and flexible luffing composite move, has significantly improved the operating efficiency of car load.
In a kind of preferred scheme, further be provided with the 4th pilot operated directional control valve.This selector valve is responsible for the feedback pressure of master winch or secondary elevator is caused as pilot pressure the control end of the second pilot operated directional control valve, thereby by the second pilot operated directional control valve control converging valve, himself be controlled by second oil outlet (namely stretching out the high pressure hydraulic fluid port) of the first control valve and the first oil outlet of the second control valve (being that luffing plays the high pressure hydraulic fluid port), when elevator moves, as long as execution is stretched out or luffing plays action, converging valve can not collaborate, adding the retraction action can not collaborate, therefore, only have luffing to fall and to realize the interflow with the composite move of elevator, to promote the working efficiency of hoisting system under this operating mode, and luffing, other flexible actions all can not realize interflow, the composite move deleterious that can effectively avoid two loads to cause because having big difference with elevator.
In another kind of preferred version, the second oil outlet of described the second control valve (being luffing drop height force feed mouth) leads to the hydraulic control bypass; Described hydraulic control bypass is communicated with the control port of described the first pilot operated directional control valve and the second pilot operated directional control valve, and is provided with the closeouts that can install, dismantle.Like this, when luffing falls to adopting power to descend, closeouts can be dismantled, luffing be fallen to realize the interflow, to avoid the consumption systems flow; When luffing falls to adopting gravity to descend, can install closeouts additional and realize the low pressure interflow, simultaneously, can realize fall interflow with hoisting system of luffing by installing closeouts additional, thereby promote the working efficiency of hoisting system.
Crane hydraulic system provided by the utility model is provided with above-mentioned interflow multi-way valve, because above-mentioned interflow multi-way valve has above-mentioned technique effect, the crane hydraulic system with this interflow multi-way valve also should possess corresponding technique effect.
Description of drawings
Fig. 1 provides the hydraulic schematic diagram of the first embodiment of interflow multi-way valve for the utility model;
Fig. 2 provides the hydraulic schematic diagram of the second embodiment of interflow multi-way valve for the utility model;
Fig. 3 provides the hydraulic schematic diagram of the 3rd embodiment of interflow multi-way valve for the utility model.
Among the figure:
1. secondary rolling control valve 4. master winch control valve 5-1. first flow divider 5-2. second flow divider 6. converging valve 7-1. first pilot operated directional control valve 7-2. second pilot operated directional control valve 7-3. the 3rd pilot operated directional control valve 7-4. the 4th pilot operated directional control valve 8-1. first shuttle valve 8-2. second shuttle valve 8-3. the 3rd shuttle valve 8-4. the 4th shuttle valve 8-5. the 5th shuttle valve 8-6. the 6th shuttle valve 9. closeouts 10-1. first check valve 10-2. the second check valve 10-3. the 3rd check valve 10-4. the 4th check valve 11. choke valves of extension and contraction control valve 2. luffing control valve 3.
Embodiment
Core of the present utility model provides a kind of interflow multi-way valve, reaches the interflow of flexible luffing composite move to realize crane telescopic, luffing, thereby improves the operating efficiency of car load.
Another core of the present utility model provides a kind of crane hydraulic system that is provided with described interflow multi-way valve.
In order to make those skilled in the art person understand better the utility model scheme, the utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Please refer to Fig. 1, Fig. 1 provides the hydraulic schematic diagram of the first embodiment of interflow multi-way valve for the utility model.
In a kind of embodiment, the interflow multi-way valve that the utility model provides comprises valve body and is integrated in the extension and contraction control valve 1 of valve body, luffing control valve 2, secondary rolling control valve 3, master winch control valve 4, the first diverter valve 5-1, the second diverter valve 5-2 and converging valve 6.
Wherein, extension and contraction control valve 1, luffing control valve 2, secondary rolling control valve 3, master winch control valve 4 are in parallel at oil circuit, form successively from left to right master winch, secondary elevator, luffing and flexible work connection.
The filler opening of the first diverter valve 5-1 is communicated with the first pressure hydraulic fluid port P1 of valve body, and oil outlet is communicated with the oil return inlet T 1 of valve body; The filler opening of the second diverter valve 5-2 is communicated with the second pressure hydraulic fluid port P2 of valve body, and oil outlet is communicated with the oil return inlet T 2 of valve body.
The first hydraulic fluid port of converging valve 6 is communicated with the first pressure hydraulic fluid port P1 of valve body, and the second hydraulic fluid port is communicated with the second pressure hydraulic fluid port P2 of valve body, is responsible for the first pressure hydraulic fluid port P1 and the second pressure hydraulic fluid port P2 are communicated with, and realizes the perforation of working connection, thereby reaches the interflow purpose.
Compare with existing multi-way valve, the interflow multi-way valve that the utility model provides is realized each action interflow by the control pilot operated directional control valve, specifically comprises:
The first pilot operated directional control valve 7-1, be two position two-way valve, when control end does not have pressure, the feedback hydraulic fluid port that is communicated with the first diverter valve 5-1 and the second diverter valve 5-2, the feedback oil circuit that the feedback oil circuit that be responsible for stretching, luffing produces and elevator produce carries out good linking, make diverter valve while and the collaborative work of the first oil pump and the second oil pump, guarantee to realize Dual-pump flow-converging work; Its first hydraulic fluid port is communicated with the feedback hydraulic fluid port of the first diverter valve 5-1, the second hydraulic fluid port is communicated with the feedback hydraulic fluid port of the second diverter valve 5-2, and has two working staties: in the first working state, its first hydraulic fluid port is communicated with the second hydraulic fluid port, in the second working state, its first hydraulic fluid port and the second hydraulic fluid port disconnect.
The second pilot operated directional control valve 7-2 is two position three-way valve, is responsible for control converging valve 6.When its control end did not have pressure, converging valve 6 was in the interflow state, and when its control end passed into pressure, converging valve 6 was in off state; Its first hydraulic fluid port is communicated with the feedback hydraulic fluid port of converging valve 6, the second hydraulic fluid port is communicated with the feedback hydraulic fluid port of extension and contraction control valve 1 and luffing control valve 2 by the first shuttle valve 8-1, the 3rd hydraulic fluid port is communicated with the oil return inlet T 1 of valve body, control port is communicated with the second hydraulic fluid port of the 3rd pilot operated directional control valve 7-3, the feedback hydraulic fluid port is communicated with the oil return inlet T 1 of valve body, and has two working staties: in the first working state, its first hydraulic fluid port is communicated with the 3rd hydraulic fluid port, in the second working state, its first hydraulic fluid port is communicated with the second hydraulic fluid port.
The 3rd pilot operated directional control valve 7-3 is two position two-way valve, and the control end that is responsible for the first pilot operated directional control valve 7-1 and the second pilot operated directional control valve 7-2 provides pressure oil; Its first hydraulic fluid port is communicated with the retraction high-pressure oil passage (i.e. the first hydraulic fluid port B1) of extension and contraction control valve 1, the second hydraulic fluid port is communicated with the control port of the first pilot operated directional control valve 7-1, the luffing that control port is communicated with luffing control valve 1 plays high-pressure oil passage (i.e. the first hydraulic fluid port B2), and have two working staties: in the first working state, its first hydraulic fluid port is communicated with the second hydraulic fluid port, in the second working state, its first hydraulic fluid port and the second hydraulic fluid port disconnect.
The specific works principle is as follows:
1, the interflow of single movement
Because the filler opening of the 3rd pilot operated directional control valve 7-3 is communicated with the hydraulic fluid port B1 of extension and contraction control valve 1, control end is communicated with the hydraulic fluid port B2 of luffing control valve 2, therefore in the situation that single movement, only when carrying out the retraction action, just can provide fluid control pressure oil to the first pilot operated directional control valve 7-1 and the second pilot operated directional control valve 7-2, namely cut off the first pilot operated directional control valve 7-1 and converging valve 6, become single oil pump feed mode, and stretch out in execution, luffing rises, during action that luffing falls, be the interflow mode of double pump fuel feeding, can realize the interflow (according to the hoist hydraulic characteristic, retraction does not need the interflow) of each action except retraction.
For example, when flexible the stretching out of execution moved, the working connection high pressure oil passes through from hydraulic fluid port A1, at this moment, hydraulic fluid port B2 does not have high pressure oil, although the 3rd pilot operated directional control valve 7-3 is in right position, but because hydraulic fluid port B1 does not have high pressure oil equally, therefore the first pilot operated directional control valve 7-1 is in upperly, makes the first diverter valve 5-1 and the second diverter valve 5-2 two feedback hydraulic fluid ports be in on-state, is all the feedback pressure that stretches out; Simultaneously, the second pilot operated directional control valve 7-2 is in left position, makes converging valve 6 be in the interflow state, has realized carrying out when stretching out action the interflow of hydraulic fluid port P1 and hydraulic fluid port P2.
In like manner, when the luffing of carrying out luffing played action, the working connection high pressure oil passed through from hydraulic fluid port B2, and at this moment, the first pilot operated directional control valve 7-1 is in upper, and the second pilot operated directional control valve 7-2 is in left position, the interflow of having realized equally hydraulic fluid port P1 and hydraulic fluid port P2.
2, the interflow of composite move
Because the retraction action can not be collaborated, therefore retraction also can not collaborate with the composite move that luffing falls, and stretch out with luffing, stretching out the composite move that rises with luffing can collaborate, in addition, because the 3rd pilot operated directional control valve 7-3 is subjected to luffing to play high-pressure oil passage and controls, when the execution luffing plays action, the 3rd pilot operated directional control valve 7-3 is in off state, can not provide fluid control pressure oil to the first pilot operated directional control valve 7-1 and the second pilot operated directional control valve 7-2, therefore when the composite move that execution bounces back and luffing rises, also can realize the interflow, namely can realize the interflow (according to the hoist hydraulic characteristic, retraction does not need the interflow with the composite move that luffing falls) of each composite move except retraction and luffing fall.
For example, when execution stretch out fall with luffing composite move the time, the working connection high pressure oil passes through from hydraulic fluid port A1 and hydraulic fluid port A2, at this moment, hydraulic fluid port B2 does not have high pressure oil, although the 3rd pilot operated directional control valve 7-3 is in right position, but because hydraulic fluid port B1 does not have high pressure oil, therefore the first pilot operated directional control valve 7-1 is in upper, the first diverter valve 5-1 and the second diverter valve 5-2 two feedback hydraulic fluid ports are in on-state, are all the feedback pressure maximum that stretches out to fall with luffing, and the second pilot operated directional control valve 7-2 is in left position, converging valve 6 is in the interflow state, has realized stretching out the interflow that falls with luffing.
When carrying out the composite move that retraction and luffing rise, the working connection high pressure oil passes through from hydraulic fluid port B1 and hydraulic fluid port B2, at this moment, under the pressure-acting of hydraulic fluid port B2, the 3rd pilot operated directional control valve 7-3 will be in left position, cut off the oil circuit control of the first pilot operated directional control valve 7-1 and the second pilot operated directional control valve 7-2, the first pilot operated directional control valve 7-1 is in upper, the first diverter valve 5-1 and the second diverter valve 5-2 two feedback hydraulic fluid ports are in on-state, be all the feedback pressure maximum that retraction and luffing rise, the second pilot operated directional control valve 7-2 is in left position, and converging valve 6 is in the interflow state, has realized the interflow that retraction and luffing rise.
As mentioned above, the utility model has improved structure and the oil circuit control mode of multi-way valve according to the interflow control mechanism, can realize stretching, the interflow of luffing and flexible luffing composite move, has significantly improved the operating efficiency of car load.
Please refer to Fig. 2, Fig. 2 provides the hydraulic schematic diagram of the second embodiment of interflow multi-way valve for the utility model.
On the basis of the first embodiment, the 4th pilot operated directional control valve 7-4 can be set further.
This selector valve is two position two-way valve, its first hydraulic fluid port is communicated with secondary rolling control valve 3 and the main feedback hydraulic fluid port of raising control valve 4 by the second shuttle valve 8-2, and control port plays high pressure hydraulic fluid port (i.e. the first hydraulic fluid port B2) by the luffing that stretches out high pressure hydraulic fluid port (i.e. the second hydraulic fluid port A1) and luffing control valve 2 that the 3rd shuttle valve 8-3 is communicated with extension and contraction control valve 1; The control port of the second pilot operated directional control valve 7-2 is communicated with the second hydraulic fluid port of the 4th pilot operated directional control valve 7-4 and the second hydraulic fluid port of the 3rd pilot operated directional control valve 7-3 by the 4th shuttle valve 8-4; And have two working staties: in the first working state, its first hydraulic fluid port and the second hydraulic fluid port disconnect, and in the second working state, its first hydraulic fluid port is communicated with the second hydraulic fluid port.
In addition, the luffing drop height force feed road of luffing control valve 2 leads to the hydraulic control bypass, and this bypass is communicated with the control port of the first pilot operated directional control valve 7-1 and the second pilot operated directional control valve 7-2, and is provided with the closeouts 9 that can install, dismantle.Like this, when luffing falls to adopting power to descend, can with closeouts 9 dismountings, luffing be fallen to realize the interflow, to avoid the consumption systems flow; When luffing falls to adopting gravity to descend, can install closeouts 9 additional and realize the low pressure interflow.
The 4th pilot operated directional control valve 7-4 is responsible for the feedback pressure of master winch or secondary elevator is caused as pilot pressure the control end of the second pilot operated directional control valve 7-2, thereby by the second pilot operated directional control valve 7-2 control converging valve 6, himself being controlled by again luffing plays the high pressure hydraulic fluid port and stretches out the high pressure hydraulic fluid port, in the elevator action, if execution is stretched out or luffing plays action, then converging valve 6 can not collaborate, adding the retraction action can not collaborate, therefore, only have luffing to fall and to realize the interflow with the composite move of elevator, can promote the working efficiency of hoisting system under this operating mode, and luffing, other flexible actions all can not realize interflow, the composite move deleterious that can effectively avoid two loads to cause because having big difference with elevator.
For example, when falling, kicks up when carrying out composite move with master file luffing, the working connection high pressure oil passes through from hydraulic fluid port A2 and hydraulic fluid port B4, owing to adding closeouts 9, hydraulic fluid port A2 can not be the control port fuel feeding of the first pilot operated directional control valve 7-1 and the second pilot operated directional control valve 7-2, and therefore the first pilot operated directional control valve 7-1 is in upper, the second pilot operated directional control valve 7-2 is in left position, converging valve 6 is in the interflow state, has realized the interflow that master file is kicked up and luffing falls, thereby has promoted the working efficiency of hoisting system.
In the further detailed hydraulic circuit of above-mentioned concrete mode, the first pilot operated directional control valve 7-1 is communicated with the feedback hydraulic fluid port of the second diverter valve 5-2 by the 5th shuttle valve 8-5; The first filler opening of the 5th shuttle valve 8-5 is communicated with the first hydraulic fluid port of the first pilot operated directional control valve 7-1, and the second filler opening is communicated with the oil outlet of the second shuttle valve 8-2, and oil outlet is communicated with the feedback hydraulic fluid port of the second diverter valve 5-2.
Further comprise the 6th shuttle valve 8-6, its first filler opening is communicated with the first pressure hydraulic fluid port P1 of valve body, and the second filler opening is communicated with the second pressure hydraulic fluid port P2 of valve body, and oil outlet is communicated with the control port of converging valve 6.
The fall hydraulic control bypass of high-pressure oil passage of the luffing of luffing control valve 2 is provided with the first one-way valve 10-1; The oil circuit that the second pilot operated directional control valve 7-2 is connected with the retraction high-pressure oil passage of extension and contraction control valve 1 is provided with the second one-way valve 10-2.
Be equipped with throttle valve 11 on the oil circuit control of the first pilot operated directional control valve 7-1, the second pilot operated directional control valve 7-2, the 4th pilot operated directional control valve 7-4.
Above-mentioned interflow multi-way valve only is a kind of preferred version, and its concrete structure is not limited to this, can make according to actual needs pointed adjustment on this basis, thereby obtains different mode of executions.As shown in Figure 3, the 3rd shuttle valve is replaced by the 3rd one-way valve 10-3 and the 4th one-way valve 10-4 or changes structural type of the first pilot operated directional control valve 7-1 etc., can realize the utility model purpose equally.Because mode in the cards is more, for saving length, this paper just illustrates no longer one by one.
Except above-mentioned interflow multi-way valve, the utility model also provides a kind of crane hydraulic system, the first oil pump, the second oil pump, master winch oil cylinder, secondary elevator oil cylinder, telescopic oil cylinder, amplitude oil cylinder and multi-way valve; Described multi-way valve is above-mentioned each described interflow multi-way valve;
Described the first oil pump is communicated with the first pressure hydraulic fluid port of described interflow multi-way valve, and described the second oil pump is communicated with the second pressure hydraulic fluid port of described interflow multi-way valve;
The oil outlet of described the first control valve is communicated with described telescopic oil cylinder, and the oil outlet of described the second control valve is communicated with described amplitude oil cylinder;
The oil outlet of described the 3rd control valve is communicated with described secondary elevator oil cylinder, and the oil outlet of described the 4th control valve is communicated with described master winch oil cylinder, and all the other structures please refer to prior art, and this paper repeats no more.
Above interflow provided by the utility model multi-way valve and crane hydraulic system are described in detail.Used specific case herein principle of the present utility model and mode of execution are set forth, above embodiment's explanation just is used for helping to understand core concept of the present utility model.Should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.
Claims (12)
1. one kind is collaborated multi-way valve, comprising:
Valve body, integrated the first valve group, second valve group, described the first valve group comprises the first control valve, the second control valve and the first diverter valve, described second valve group comprises the 3rd control valve, the 4th control valve and the second diverter valve;
Converging valve is for the pressure oil circuit of described the first valve group of conducting and second valve group;
It is characterized in that, further comprise:
The first pilot operated directional control valve is for the feedback hydraulic fluid port that is communicated with or disconnects described the first diverter valve and the second diverter valve;
The second pilot operated directional control valve is used for being communicated with or disconnecting the feedback oil circuit of described the first valve group and the feedback hydraulic fluid port of described converging valve, is in interflow or off state thereby control described converging valve;
The 3rd pilot operated directional control valve be used for to be communicated with or to disconnect the control port of the first oil outlet of described the first control valve and described the first pilot operated directional control valve, the 3rd pilot operated directional control valve, and its control port is communicated with the first oil outlet of described the second control valve.
2. interflow according to claim 1 multi-way valve is characterized in that,
The first hydraulic fluid port of described the first pilot operated directional control valve is communicated with the feedback hydraulic fluid port of described the first diverter valve, and the second hydraulic fluid port is communicated with the feedback hydraulic fluid port of described the second diverter valve;
And have two working staties: in the first working state, its first hydraulic fluid port is communicated with the second hydraulic fluid port, and in the second working state, its first hydraulic fluid port and the second hydraulic fluid port disconnect.
3. interflow according to claim 1 multi-way valve is characterized in that,
The first hydraulic fluid port of described the second pilot operated directional control valve is communicated with the feedback hydraulic fluid port of described converging valve, and the second hydraulic fluid port is communicated with the feedback hydraulic fluid port of described the first control valve and the second control valve by the first shuttle valve, and the 3rd hydraulic fluid port is communicated with the return opening of described valve body;
And have two working staties: in the first working state, its first hydraulic fluid port is communicated with the 3rd hydraulic fluid port, and in the second working state, its first hydraulic fluid port is communicated with the second hydraulic fluid port.
4. interflow according to claim 1 multi-way valve is characterized in that,
The first hydraulic fluid port of described the 3rd pilot operated directional control valve is communicated with the first oil outlet of described the first control valve, and the second hydraulic fluid port is communicated with the control port of described the first pilot operated directional control valve and the 3rd pilot operated directional control valve;
And have two working staties: in the first working state, its first hydraulic fluid port is communicated with the second hydraulic fluid port, and in the second working state, its first hydraulic fluid port and the second hydraulic fluid port disconnect.
5. interflow according to claim 1 multi-way valve is characterized in that,
Further comprise the 4th pilot operated directional control valve, be used for conducting or disconnect the control port of feedback oil circuit and described second pilot operated directional control valve of described second valve group, its control port is communicated with the first oil outlet of described the first control valve the second oil outlet and the second control valve by the second shuttle valve.
6. interflow according to claim 5 multi-way valve is characterized in that,
The first hydraulic fluid port of described the 4th pilot operated directional control valve is communicated with the feedback hydraulic fluid port of described the 3rd control valve and the 4th control valve by the 3rd shuttle valve;
The control port of described the second pilot operated directional control valve is communicated with the second hydraulic fluid port of described the 4th pilot operated directional control valve and the second hydraulic fluid port of described the 3rd pilot operated directional control valve by the 4th shuttle valve;
And have two working staties: in the first working state, its first hydraulic fluid port and the second hydraulic fluid port disconnect, and in the second working state, its first hydraulic fluid port is communicated with the second hydraulic fluid port.
7. according to claim 1 to 6 each described interflow multi-way valve, it is characterized in that,
The second oil outlet of described the second control valve leads to the hydraulic control bypass;
Described hydraulic control bypass is communicated with the control port of described the first pilot operated directional control valve and the second pilot operated directional control valve, and is provided with the closeouts that can install, dismantle.
8. interflow according to claim 7 multi-way valve is characterized in that,
The hydraulic control bypass of the second oil outlet of described the second control valve is provided with the first one-way valve;
Described the 3rd pilot operated directional control valve is provided with the second one-way valve with the oil circuit that the first oil outlet of described the first control valve is connected.
9. according to claim 1 to 6 each described interflow multi-way valve, it is characterized in that,
Described the first pilot operated directional control valve is communicated with the feedback hydraulic fluid port of described the second diverter valve by the 5th shuttle valve;
The first filler opening of described the 5th shuttle valve is communicated with the feedback oil circuit of described second valve group, and the second filler opening is communicated with the second hydraulic fluid port of described the first pilot operated directional control valve, and oil outlet is communicated with the feedback hydraulic fluid port of described the second diverter valve.
10. according to claim 1 to 6 each described interflow multi-way valve, it is characterized in that,
Further comprise the 6th shuttle valve, its first filler opening is communicated with the first pressure hydraulic fluid port of described valve body, and the second filler opening is communicated with the second pressure hydraulic fluid port of described valve body, and oil outlet is communicated with the control port of described converging valve.
11. to 6 each described interflow multi-way valve, it is characterized in that according to claim 1,
Described the first pilot operated directional control valve, the second pilot operated directional control valve and the 4th pilot operated directional control valve are the two-position two-way hydraulic control selector valve;
Described the 3rd pilot operated directional control valve is the two-position three way pilot operated directional control valve.
12. a crane hydraulic system comprises:
The first oil pump, the second oil pump, master winch oil cylinder, secondary elevator oil cylinder, telescopic oil cylinder, amplitude oil cylinder and multi-way valve; It is characterized in that, described multi-way valve is the claims 1 to 11 each described interflow multi-way valve;
Described the first oil pump is communicated with the first pressure hydraulic fluid port of described interflow multi-way valve, and described the second oil pump is communicated with the second pressure hydraulic fluid port of described interflow multi-way valve;
The oil outlet of described the first control valve is communicated with described telescopic oil cylinder, and the oil outlet of described the second control valve is communicated with described amplitude oil cylinder;
The oil outlet of described the 3rd control valve is communicated with described secondary elevator oil cylinder, and the oil outlet of described the 4th control valve is communicated with described master winch oil cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220322748 CN202914810U (en) | 2012-07-05 | 2012-07-05 | Confluence multi-way valve and crane hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220322748 CN202914810U (en) | 2012-07-05 | 2012-07-05 | Confluence multi-way valve and crane hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202914810U true CN202914810U (en) | 2013-05-01 |
Family
ID=48163127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220322748 Withdrawn - After Issue CN202914810U (en) | 2012-07-05 | 2012-07-05 | Confluence multi-way valve and crane hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202914810U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103303801A (en) * | 2013-06-30 | 2013-09-18 | 安徽柳工起重机有限公司 | Hydraulic confluence control system for truck crane |
| CN105443481A (en) * | 2014-12-09 | 2016-03-30 | 徐州重型机械有限公司 | Series-parallel crane multitandem valve and hydraulic system and crane |
| CN109372815A (en) * | 2018-12-17 | 2019-02-22 | 柳州柳工液压件有限公司 | Multiple directional control valve and double pump fuel feeding hydraulic system |
-
2012
- 2012-07-05 CN CN 201220322748 patent/CN202914810U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103303801A (en) * | 2013-06-30 | 2013-09-18 | 安徽柳工起重机有限公司 | Hydraulic confluence control system for truck crane |
| CN103303801B (en) * | 2013-06-30 | 2015-03-11 | 安徽柳工起重机有限公司 | Hydraulic confluence control system for truck crane |
| CN105443481A (en) * | 2014-12-09 | 2016-03-30 | 徐州重型机械有限公司 | Series-parallel crane multitandem valve and hydraulic system and crane |
| CN105443481B (en) * | 2014-12-09 | 2018-01-12 | 徐州重型机械有限公司 | Series parallel type crane banked direction control valves, hydraulic system and crane |
| CN109372815A (en) * | 2018-12-17 | 2019-02-22 | 柳州柳工液压件有限公司 | Multiple directional control valve and double pump fuel feeding hydraulic system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103671335B (en) | Load-sensitive electric proportional multi-loop valve | |
| CN102345749B (en) | Flow collecting valve and crane hydraulic control system with the same | |
| CN102734501B (en) | Converging multipath valve and crane hydraulic system | |
| CN102874697B (en) | Hydraulic system for controlling amplitude variation of arm support and crane | |
| CN102874704B (en) | Hydraulic system, hoisting mechanism and engineering machinery | |
| CN103244496A (en) | Rotary control valve unit, rotary control hydraulic system and crane | |
| CN201166159Y (en) | Multiple-way valve and hydraulic device and concrete pump vehicle having the same | |
| CN103303801B (en) | Hydraulic confluence control system for truck crane | |
| CN202914810U (en) | Confluence multi-way valve and crane hydraulic system | |
| CN103899588B (en) | Lorry-mounted crane multi-way reversing device and straight-arm lorry-mounted crane | |
| CN110626948A (en) | Hydraulic control system of folding arm type lorry-mounted crane | |
| CN203699758U (en) | Winch hydraulic system and engineering machinery | |
| CN102877783B (en) | Rotary drilling rig and hydraulic rotation system thereof | |
| CN201109689Y (en) | Crane hydraulic system | |
| CN202108803U (en) | Multi-way reversing valve for lorry-mounted crane | |
| CN202829383U (en) | Hydraulic system controlling boom to vary amplitude and crane | |
| CN104444816A (en) | Hydraulic control system of hoisting machinery and hoisting machinery | |
| CN207761575U (en) | The auxiliary pump Confluent control system of rotary drilling rig main pump | |
| CN202209447U (en) | Converging valve and crane hydraulic control system with converging valve | |
| CN104176639B (en) | Become constant pressure network hydraulic system, hydraulic control method and crane | |
| CN203717509U (en) | Lorry-mounted crane multi-way reversing device and straight-arm lorry-mounted crane | |
| CN210655875U (en) | Hydraulic control system of folding arm type lorry-mounted crane | |
| CN103132557A (en) | Excavator and priority control loop of excavator | |
| CN203670337U (en) | Load-sensitive electric proportional multi-way valve | |
| CN203770261U (en) | Fire truck and getting-on and getting-off switching system thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130501 Effective date of abandoning: 20131211 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20130501 Effective date of abandoning: 20131211 |
|
| RGAV | Abandon patent right to avoid regrant |