CN202125475U - Switching valve and double-power closed hydraulic system with the same - Google Patents
Switching valve and double-power closed hydraulic system with the same Download PDFInfo
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- CN202125475U CN202125475U CN2011201509133U CN201120150913U CN202125475U CN 202125475 U CN202125475 U CN 202125475U CN 2011201509133 U CN2011201509133 U CN 2011201509133U CN 201120150913 U CN201120150913 U CN 201120150913U CN 202125475 U CN202125475 U CN 202125475U
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Abstract
The utility model discloses a switching valve, which comprises at least one switching unit, wherein the switching unit comprises a pair of working oil openings and further comprises at least two butting pump oil openings, and oil return openings; besides, the body of the switching valve is provided with a control valve and a reversing valve; and the control valve and the reversing valve control connection and disconnection of the butting pump oil openings and a pair of working oil openings. The switching valve provided by the utility model ensures different power elements to simultaneously supply power to an executing element so as to ensure the work efficiency of the system; moreover, the work of some power elements is stopped when power demand is low so as to save resources; or the power of some power elements is intensively supplied to the other executing elements; besides, the control valve can disconnect a passage between the corresponding power element and the other power elements so as to protect the power elements which are not in work and also to prevent leakage of the pressure oil from the power elements which are not in work, thereby increasing the efficiency of the system. The utility model further provides a double-power closed hydraulic system with the switching valve.
Description
Technical field
The utility model relates to technical field of engineering machinery, particularly a kind of switching valve.The utility model also relates to a kind of double dynamical closed type hydraulic system that has this switching valve.
Background technique
The hydraulic system of hoist is divided into open type hydraulic system and closed type hydraulic system.With the crawler crane is example; Take open type hydraulic system; Multiple valve part such as equilibrium valve, multi-way valve need be set in system; Between these valves and the matching between valve and the Motor executive component is difficult satisfies; Can produce problems such as shake, downslide, speed are slow, inefficiency if coupling is not in place, usually need be, readjust parameter even change hydraulic element and just can reach more perfectly coupling through too much wheel trial-production test, then more complicated for large-scale crawler crane operating mode.
Owing to need not to be provided with multiple valve class hydraulic element in the closed type hydraulic system; Directly form oil hydraulic circuit by enclosed pump driving execution element; So do not exist between the valve and the matching problem between valve and the motor, therefore, on large-scale crawler crane, adopt closed type hydraulic system usually.Complexity based on operating mode; Be provided with a plurality of oil hydraulic pumps in the closed type hydraulic system of crawler crane, in order to drive different hydraulic actuator actions, because the power and the discharge capacity of each oil hydraulic pump are limited; So there is the not high enough problem of working efficiency; Use the same executive component of a plurality of oil hydraulic pump driven in common, when executive component needs to hang down power, can cause the waste of resource again.
Secondly, required enclosed pump drives by motor in the closed type hydraulic system, behind two above oil hydraulic pumps of each executive component outfit; The load of motor can further raise; For the large-scale crawler crane more than the 2000T, require its engine power usually more than 860KW, yet; The high power engine resource that is applicable to engineering machinery is comparatively rare, and at present the power motor that surpasses 560KW and meet III stage emission standard is not able to promote yet.
Therefore, in closed type hydraulic system, how improving the power of hydraulic actuator, save the energy again, is those skilled in the art's technical issues that need to address.In addition, the power demand that how to use the motor that has power now to satisfy closed type hydraulic system also is the technical issues that need to address.
The model utility content
A purpose of the utility model provides a kind of switching valve, and the switching unit in this switching valve can make different dynamical element driven in common executive component actions, and when the executive component power demand was low, the part dynamical element stopped action, saves resource.Another purpose of the utility model provides a kind of double dynamical closed type hydraulic system that has above-mentioned switching valve, and this closed type hydraulic system has two motors, for the oil hydraulic pump in the system provides power, improves the working efficiency of system.
For solving the problems of the technologies described above, the utility model provides a kind of switching valve, comprises at least one switching unit, and said switching unit has a pair of actuator port, also has at least two butt joint pump hydraulic fluid ports, and return opening; And in its valve body:
Connect the corresponding pair of control valve that is provided with of pump hydraulic fluid port, the control port that each said control valve all has the first main hydraulic fluid port, the second main hydraulic fluid port and controls the said first main hydraulic fluid port and the said second main hydraulic fluid port break-make with each to said; And each two said first main hydraulic fluid port to said control valve is communicated with the corresponding said hydraulic fluid port of a butt joint pump respectively, and each two said second main hydraulic fluid port to said control valve is communicated with a pair of said actuator port respectively;
With each to said control valve with each to the said selector valve that connects the corresponding setting of pump hydraulic fluid port, in first working position, each to said control port of said control valve all with the corresponding a pair of said pump hydraulic fluid port connection that connects; In second working position, the said control port of each said control valve all is communicated with said return opening.
Preferably, said control valve is cartridge valve.
The switching valve that this model utility provided; When the executive component that is communicated with a pair of actuator port has the high power demand; Can make first selector valve and second selector valve all be in second working position, two dynamical elements that then are communicated with two butt joint pump hydraulic fluid ports can be the executive component fuel feeding simultaneously; When the executive component power demand was low, fuel feeding that can the cutout portion dynamical element can make corresponding selector valve be in first working position.Therefore; This switching unit can make different dynamical elements for executive component power is provided simultaneously; The working efficiency of assurance system, and when executive component is low to power demand, stop the work of part dynamical element; Save resource, perhaps make other executive components of power concentration supply of part dynamical element; In addition; When dynamical element is communicated with a pair of actuator port through a butt joint pump hydraulic fluid port; Simultaneously also be communicated with other dynamical elements that are communicated with two actuator ports, blocked when being communicated with the fuel feeding of dynamical element with a butt joint pump hydraulic fluid port, correspondingly the pair of control valve cuts out the path that correspondence one is docked pump hydraulic fluid port and a pair of actuator port; Then can block the path of corresponding dynamical element and other dynamical elements; Thereby can protect the dynamical element under not in running order, also can avoid pressure oil to leak, improve system effectiveness from off working state dynamical element place.
For reaching another purpose of the utility model; The utility model also provides a kind of double dynamical closed type hydraulic system; Comprise hydraulic actuator, comprise first motor and second motor, and by by said first motor and said second engine-driven pump group; Each said pump group is communicated with hydraulic actuator through switching valve; Said switching valve is above-mentioned each described switching valve, and the both sides hydraulic fluid port of oil hydraulic pump is communicated with a pair of said pump hydraulic fluid port that connects of switching unit in the said switching valve in each said pump group, and the both sides hydraulic fluid port of said hydraulic actuator is communicated with a pair of said actuator port of switching unit described in the said switching valve.
Preferably, said switching unit has two pairs of said pump hydraulic fluid ports that connect, and is provided with corresponding said control valve of two couples and the two said selector valves that are provided with in its valve body.
Preferably, have five groups of said switching units in the said switching valve.
Preferably; Have first switching valve, first motor and second motor, by said first motor and the separately-driven first pump group of said second motor and the second pump group, oil hydraulic pump comprises first main pump and second main pump in said first pump group and the said second pump group; The both sides hydraulic fluid port of first main pump in first main pump and the said second pump group in the said first pump group is communicated with the said pump hydraulic fluid port that connects of two couples of three said switching units in the said switching valve respectively; The both sides hydraulic fluid port of second main pump in second main pump and the said second pump group in the said first pump group is communicated with in the said switching valve the said pump hydraulic fluid port that connects of two couples of two said switching units in addition respectively.
Preferably, the first pump group and the second pump group also include the 3rd main pump and the 4th main pump, also have second switching valve; The both sides hydraulic fluid port of the 3rd main pump in the 3rd main pump and the said second pump group in the said first pump group is communicated with the said pump hydraulic fluid port that connects of two couples of three said switching units in said second switching valve respectively; In the said first pump group in the 4th main pump and the said second pump group both sides hydraulic fluid port of the 4th main pump be communicated with the said pump hydraulic fluid port that connects of two couples of two said switching units in said second switching valve respectively.
Preferably, a pair of said actuator port of three said switching units is communicated with the both sides hydraulic fluid port that principal arm luffing motor, tower arm luffing motor, left lateral are walked motor respectively in said first switching valve; In said first switching valve in addition a pair of said actuator port of two said switching units be communicated with the both sides hydraulic fluid port that first main hoist hoist motor and the said left lateral walked motor respectively.
Preferably, be communicated with a pair of said actuator port that said left lateral is walked two said switching units of motor both sides hydraulic fluid port in said first switching valve, merging is arranged on the valve body of said first switching valve.
Preferably, a pair of said actuator port of three said switching units is communicated with the both sides hydraulic fluid port that single pulley hoist motor, mast luffing motor, right lateral are walked motor respectively in said second switching valve; The a pair of said actuator port of two said switching units is communicated with the both sides hydraulic fluid port that the second main hoist motor that hoists, said right lateral are walked motor respectively in said second switching valve.
Preferably, be communicated with a pair of said actuator port that said right lateral is walked two said switching units of motor both sides hydraulic fluid port in said second switching valve, merging is arranged on the valve body of said second switching valve.
The double dynamical closed type hydraulic system that this model utility provided has used above-mentioned switching valve; Can know by foregoing; Switching valve can make the different same executive components of dynamical element driven in common, and under the operating mode of low power demand, stops the work of part dynamical element; Save resource, perhaps make other executive components of power concentration supply of part dynamical element.In addition; Adopt two motors in this closed type hydraulic system; Can be by each engine-driven pump group through the action of the switching unit driven in common executive component in the switching valve; Thereby reduce requirement, even low power motor still can satisfy the demand of closed type hydraulic system to engine power.
Description of drawings
Fig. 1 provides the hydraulic principle schematic representation of switching unit in the switching valve for the utility model;
Fig. 2 is the basic structure schematic representation of switching unit among Fig. 1;
Fig. 3 provides the structural representation of a kind of embodiment of switching valve for the utility model;
Fig. 4 provides the hydraulic diagram of using first switching valve in a kind of embodiment of double dynamical closed type hydraulic system for the utility model;
Fig. 5 provides the hydraulic diagram of using second switching valve in a kind of embodiment of double dynamical closed type hydraulic system for the utility model;
Fig. 6 provides the schematic representation of motor in a kind of double dynamical closed type hydraulic system and pump group thereof for the utility model.
Embodiment
A core of the utility model provides a kind of switching valve, and the switching unit in this switching valve can make different dynamical element driven in common executive component actions, and when the executive component power demand was low, the part dynamical element stopped action, saves resource.Another core of the utility model provides a kind of double dynamical closed type hydraulic system that has above-mentioned switching valve, and this closed type hydraulic system has two motors, for the oil hydraulic pump in the system provides power, improves the working efficiency of system.
In order to make those skilled in the art understand the technological scheme of the utility model better, the utility model is done further to specify below in conjunction with accompanying drawing and specific embodiment.
Please refer to Fig. 1 to Fig. 3, Fig. 1 provides the hydraulic principle schematic representation of switching unit in the switching valve for the utility model; Fig. 2 is the basic structure schematic representation of switching unit among Fig. 1; Fig. 3 provides the structural representation of a kind of embodiment of switching valve for the utility model.
This switching valve comprises at least one switching unit, and switching unit has a pair of actuator port, and the first actuator port A as shown in fig. 1 and the second actuator port B are respectively in order to be communicated with the both sides hydraulic fluid port of executive component; Also have at least two butt joint pump hydraulic fluid ports, and oil return inlet T, oil return inlet T is communicated with fuel tank, and each docks the both sides hydraulic fluid port that the pump hydraulic fluid port is used to connect dynamical element; And be provided with in its valve body:
With the pair of control valve of the corresponding setting of each butt joint pump hydraulic fluid port, the control port that each control valve all has the first main hydraulic fluid port, the second main hydraulic fluid port and controls the first main hydraulic fluid port and the second main hydraulic fluid port break-make; And each two first main hydraulic fluid port to control valve is communicated with a corresponding butt joint pump hydraulic fluid port respectively; Each second main hydraulic fluid port to control valve is communicated with the first actuator port A and the second actuator port B respectively; Each control valve preferably adopts cartridge valve, and cartridge valve is synthetic valve, obtains resource and control easily precisely.Switching unit shown in Fig. 1 has two butt joint pump hydraulic fluid ports; The first butt joint pump hydraulic fluid port as shown in fig. 1 is the first hydraulic fluid port a1, the second hydraulic fluid port a2; The second butt joint pump hydraulic fluid port is the 3rd hydraulic fluid port b1 and the 4th hydraulic fluid port b2; The corresponding first cartridge valve Z1 and the second cartridge valve Z2 of being provided with the first hydraulic fluid port a1 and the second hydraulic fluid port a2, corresponding the 3rd cartridge valve Z3 and the 4th cartridge valve Z4 of being provided with the 3rd hydraulic fluid port b1 and the 4th hydraulic fluid port b2.
Cartridge valve and each are docked the corresponding selector valve that is provided with of pump hydraulic fluid port, in first working position, each control port to control valve all is communicated with a corresponding butt joint pump hydraulic fluid port with each; In second working position, the control port of each control valve all is communicated with oil return inlet T.
Correspondingly be provided with the first selector valve Y101 and the second selector valve Y102 among Fig. 1 and Fig. 2; In first working position; The control port of the first cartridge valve Z1 and the second cartridge valve Z2 all is communicated with the first hydraulic fluid port a1 and the second hydraulic fluid port a2, and the control port of the 3rd cartridge valve Z3 and the 4th cartridge valve Z4 all is communicated with the 3rd hydraulic fluid port b1 and the 4th hydraulic fluid port b2; In second working position, the control port of four cartridge valves all is communicated with oil return inlet T.Two selector valves can be the two-position four-way solenoid directional control valve, and are as shown in Figure 1, and the first selector valve Y101 is in power failure state; Promptly be in first working position, the control port of the first cartridge valve Z1 and the second cartridge valve Z2 all is communicated with the first hydraulic fluid port a1 and the second hydraulic fluid port a2, and then the spring chamber pressure of the first cartridge valve Z1 and the second cartridge valve Z2 equates with the pressure of the first main hydraulic fluid port; Two cartridge valves are closed, and then the first actuator port A and the first hydraulic fluid port a1, the second actuator port B and the second hydraulic fluid port a2 break off, and the first selector valve Y101 is got; Promptly be in second working position; Then the control port of the first cartridge valve Z1 and the second cartridge valve Z2 is communicated with oil return inlet T, and spring chamber pressure is zero, is lower than the pressure of the first main hydraulic fluid port; Two cartridge valves are opened, and then the conducting first hydraulic fluid port a1 and the first actuator port A, the second hydraulic fluid port a2 and the second actuator port B.The working principle of the 3rd cartridge valve Z3 and the 4th cartridge valve Z4 is identical with the working principle of the first cartridge valve Z1 and the second cartridge valve Z2; Through the second selector valve Y102 electric and dead electricity are the break-make of may command the 3rd hydraulic fluid port b1 and the first actuator port A, the 4th hydraulic fluid port b2 and the second actuator port B, do not give unnecessary details at this.
When the executive component with the first actuator port A and the second actuator port B has the high power demand; Can make the first selector valve Y101 and the second selector valve Y102 all be in second working position; Be among Fig. 1 the first selector valve Y101 and the second selector valve Y102 all electric, two dynamical elements that then are communicated with two butt joint pump hydraulic fluid ports can be the executive component fuel feeding simultaneously; When the executive component power demand is low, can cut off the fuel feeding of a dynamical element, even the first selector valve Y101 or the second selector valve Y102 are in first working position, make among Fig. 1 the first selector valve Y101 or the second selector valve Y102 be in power failure state.Therefore; This switching unit can make different dynamical elements for executive component power is provided simultaneously; The working efficiency of assurance system, and when executive component is low to power demand, stop the work of part dynamical element; Save resource, perhaps make other executive components of power concentration supply of part dynamical element; In addition; When dynamical element is communicated with two actuator ports through the first hydraulic fluid port a1 and the second hydraulic fluid port a2; Simultaneously also be communicated with another dynamical element that is communicated with the 3rd hydraulic fluid port b 1 and the 4th hydraulic fluid port b2, when blocking the fuel feeding of dynamical element of the connection first hydraulic fluid port a1 and the second hydraulic fluid port a2, the first control valve Z1 and the second control valve Z2 close the first hydraulic fluid port a1, the second hydraulic fluid port a2 respectively with the path of the first actuator port A, the second actuator port B; Then can block the path of this dynamical element and another dynamical element; Thereby can protect this dynamical element under not in running order, also can avoid pressure oil to leak, improve system effectiveness from off working state dynamical element place.
Be provided with two butt joint pump hydraulic fluid ports, the two pairs of cartridge valves and two selector valves among Fig. 1; In fact, the hydraulic fluid port of three pairs, four pairs or above number can also be set, and corresponding cartridge valve and selector valve are set; Be the executive component fuel feeding promptly by plural dynamical element; In order to simplify Design of Hydraulic System, guarantee the driving force of motor under normal output, design two butt joint pump hydraulic fluid ports here and be easy to practical operation.In addition, the switching valve in this mode of execution has five groups of switching units, and is as shown in Figure 2, and in fact the actuator port of each switching unit, can design the switching unit number in the switching valve according to actual needs in order to connect different hydraulic actuators.Switching valve can be gathered on a valve body; As shown in Figure 2, two butt joint pump hydraulic fluid ports of three switching units are integrated on the whole valve body, i.e. three shared two butt joint pump hydraulic fluid ports of switching unit; As shown in Figure 2; Switching valve has two butt joint pump hydraulic fluid ports, and the first butt joint pump hydraulic fluid port is first to meet pump hydraulic fluid port A1a, second and meet pump hydraulic fluid port B1a, and the second butt joint pump hydraulic fluid port is the 3rd to meet pump hydraulic fluid port A2a, the 4th and meet pump hydraulic fluid port B2a; Two butt joint pump hydraulic fluid ports of two other switching unit also are integrated on the whole valve body; Promptly two switching units shared two dock the pump hydraulic fluid ports in addition; The 3rd butt joint pump hydraulic fluid port as shown in Figure 2 and the 4th butt joint pump hydraulic fluid port; The 3rd butt joint pump hydraulic fluid port is the 5th to meet pump hydraulic fluid port A1b, the 6th and meet pump hydraulic fluid port B1b, and the 4th butt joint pump hydraulic fluid port is the 7th to meet pump hydraulic fluid port A2b, the 8th and meet pump hydraulic fluid port B2b.And the return opening of each switching unit also is integrated into first oil return inlet T 1 and second oil return inlet T 2, is located on the whole valve body; What in addition, be provided with whole oil circuit on the whole valve body of switching valve simultaneously respectively feeds back hydraulic fluid port, the control interface of each solenoid directional control valve etc.The processing of switching valve is convenient in integrated design, and is convenient to being connected of dynamical element and executive component, and it is loaded down with trivial details to avoid hydraulic circuit to connect.Each solenoid directional control valve shown in Fig. 2 all is in power failure state, can control each on off operating mode to cartridge valve separately through electrical system, thereby realizes respectively docking the break-make of pump hydraulic fluid port and corresponding actuator port.
Except above-mentioned switching valve; The utility model also provides a kind of double dynamical closed type hydraulic system; Comprise hydraulic actuator and two motors, the first motor E1 and the second motor E2 shown in promptly scheming, and by engine-driven pump group; Each pump group is communicated with hydraulic actuator through switching valve; Switching valve is the described switching valve of above-mentioned arbitrary embodiment, and the both sides hydraulic fluid port of oil hydraulic pump is communicated with a butt joint pump hydraulic fluid port of switching unit in the switching valve in each pump group, and the both sides hydraulic fluid port of hydraulic actuator is communicated with a pair of actuator port of switching unit in the switching valve.
Can know that by foregoing switching valve can make the different same executive components of dynamical element driven in common, and under the operating mode of low power demand, in good time the truncation part oil hydraulic pump.Because this closed type hydraulic system uses this switching valve, therefore, this closed type hydraulic system has identical technique effect, and existing the argumentation do not given unnecessary details at this in the embodiment of above-mentioned switching valve.In addition; Adopt two motors in this closed type hydraulic system; Can be by each engine-driven pump group through the action of the switching unit driven in common executive component in the switching valve; Thereby reduce requirement, even low power motor still can satisfy the demand of closed type hydraulic system to engine power.Certainly, according to power demand, also can adopt plural motor.
Please refer to Fig. 4, Fig. 4 provides the hydraulic diagram of using first switching valve in a kind of embodiment of double dynamical closed type hydraulic system for the utility model; Fig. 5 provides the hydraulic diagram of using second switching valve in a kind of embodiment of double dynamical closed type hydraulic system for the utility model; Fig. 6 provides the schematic representation of motor in a kind of double dynamical closed type hydraulic system and pump group thereof for the utility model.
In this embodiment; Has first switching valve; The number of its switching unit is five, and motor comprises the first motor E1 and the second motor E2, drives the first pump group and the second pump group respectively; The oil hydraulic pump of the first pump group comprises the first main pump P1.1-1 and the second main pump P1.2-1, and the second pump group comprises the first main pump P2.1-1 and the second main pump P2.2-1.The both sides hydraulic fluid port of the first main pump P1.1-1 is communicated with in first switching valve common first the meeting pump hydraulic fluid port A1a and second and meet pump hydraulic fluid port B1a of three switching units respectively in the first pump group, and the both sides hydraulic fluid port of the first main pump P2.1-1 is communicated with in first switching valve common the 3rd the meeting pump hydraulic fluid port A2a and the 4th and meet pump hydraulic fluid port B2a of three switching units respectively in the second pump group; The both sides hydraulic fluid port of the second main pump P1.2-1 is communicated with in first switching valve in addition common the 5th the meeting pump hydraulic fluid port A1b and the 6th and meet pump hydraulic fluid port B1b of two switching units respectively in the first pump group, and the both sides hydraulic fluid port of the second main pump P2.2-1 is communicated with in first switching valve in addition common the 7th the meeting pump hydraulic fluid port A2b and the 8th and meet pump hydraulic fluid port B2b of two switching units respectively in the second pump group.Then three executive component actions of the first main pump P2.1-1 driven in common of the first main pump P1.1-1 of the first pump group and the second pump group, two other executive component action of the second main pump P2.2-1 driven in common of the second main pump P1.2-1 of the first pump group and the second pump group.Among Fig. 4; A switching unit (top-down the 3rd switching unit) that is communicated with the first main pump P2.1-1 of the first main pump P1.1-1 of the first pump group and the second pump group; Another switching unit (top-down the 4th switching unit) that is communicated with the second main pump P2.2-1 with the second main pump P1.2-1 of the first pump group and the second pump group; The two has common a pair of actuator port, and promptly the first actuator port A4 and the second actuator port B4 are integrated on the whole valve body of first switching valve; When then the first pump group and the second pump group are worked; First main pump of the two and second main pump are same executive component power are provided, and promptly four main pumps in two pump groups are that same executive component provides power, to satisfy the demands.
Particularly; In the closed type hydraulic system of hoist; Can make with the first pump group in a pair of actuator port (i.e. the first actuator port A1 and the second actuator port B1) of first switching unit that the first main pump P2.1-1 is connected in the first main pump P1.1-1 and the second pump group be communicated with the both sides hydraulic fluid port of principal arm luffing motor C1 respectively; The a pair of actuator port of second switching unit (i.e. the first actuator port A2 and the second actuator port B2) is communicated with the both sides hydraulic fluid port of tower arm luffing motor C2 respectively, and a pair of actuator port of the 3rd switching unit (i.e. the first actuator port A4 and the second actuator port B4) is communicated with the both sides hydraulic fluid port that left lateral is walked motor C4 respectively; Make with the first pump group in the first actuator port A4 and the second actuator port B4 of first switching unit (the 4th bottom-up switching unit) that the second main pump P2.2-1 is connected in the second main pump P1.2-1 and the second pump group be communicated with the both sides hydraulic fluid port that left lateral is walked motor C4 respectively; Promptly four main pumps in the first pump group and the second pump group can be walked motor C4 for left lateral jointly provides power; Satisfy the high power demand that left lateral is walked, a pair of actuator port (i.e. the first actuator port A3 and the second actuator port B3) of second switching unit (the 5th bottom-up switching unit) is communicated with the both sides hydraulic fluid port of the first main hoist motor C3 that hoists respectively.
Further; The first pump group can also comprise the 3rd main pump P1.3-1 and the 4th main pump P1.4-1, and the second pump group also comprises the 3rd main pump P2.3-1 and the 4th main pump P2.4-1, and second switching valve also is set simultaneously; Please refer to Fig. 5, second switching valve is identical with the structure of first switching valve.The both sides hydraulic fluid port of the 3rd main pump P1.3-1 of the first pump group is communicated with three butt joint pump hydraulic fluid ports that switching unit is integrated in second switching valve respectively; Promptly first meet pump hydraulic fluid port A1a and second and meet pump hydraulic fluid port B1a, the both sides hydraulic fluid port of the 3rd main pump P2.3-1 of the second pump group is communicated with in second switching valve integrated the 3rd the meeting pump hydraulic fluid port A2a and the 4th and meet pump hydraulic fluid port B2a of three switching units respectively; The both sides hydraulic fluid port of the 4th main pump P1.4-1 of the first pump group is communicated with in another switching valve integrated the 5th the meeting pump hydraulic fluid port A1b and the 6th and meet pump hydraulic fluid port B1b of two switching units respectively, and the both sides hydraulic fluid port of the 4th main pump P2.4-1 of the second pump group is communicated with in second switching valve integrated the 7th the meeting pump hydraulic fluid port A2b and the 8th and meet pump hydraulic fluid port B2b of two switching units respectively.Second switching valve is identical with the working principle of first switching valve, does not give unnecessary details at this.
Particularly; Can make in second switching valve, a pair of actuator port (i.e. the first actuator port A1 and the second actuator port B1) of first switching unit that is connected with the 3rd main pump P2.3-1 in the 3rd main pump P1.3-1 in the first pump group and the second pump group is communicated with respectively that the both sides hydraulic fluid port of single pulley hoist motor C5, a pair of actuator port of second switching unit (i.e. the first actuator port A2 and the second actuator port B2) are communicated with the both sides hydraulic fluid port of mast luffing motor C6 respectively, a pair of actuator port of the 3rd switching unit (i.e. the first actuator port A4 and the second actuator port B4) is communicated with the both sides hydraulic fluid port that right lateral is walked motor C8 respectively.In second switching valve; The a pair of actuator port (i.e. the first actuator port A4 and the second actuator port B4) of first switching unit that is connected with the 4th main pump P2.4-1 in the 4th main pump P1.4-1 in the first pump group and the second pump group is communicated with the both sides hydraulic fluid port that right lateral is walked motor C8 respectively; Promptly four main pumps in the first pump group and the second pump group can be walked motor C8 for right lateral jointly provides power, satisfies the high power demand that right lateral is walked; The first actuator port A3 of second switching unit and the second actuator port B3 are communicated with the both sides hydraulic fluid port of the second main hoist motor C7 that hoists respectively.
In above-mentioned two groups of switching valves each connects a motor to actuator port, and in fact, every team's actuator port also can connect the motor of two or more numbers, and certainly, should be enough to supply each motor operations with power is prerequisite.
Through above technological scheme, under the effect of two motors, drive two pump group work, two pump groups realize that principal arm luffing, tower arm luffing, mast luffing, two master winches of car load hoist through two switching valves, and left lateral is walked the function walked with right lateral.Not only comprise four main pumps in the two pump groups; Can also be equipped with corresponding oil hydraulic pump; As shown in Figure 5, in the first pump group with supporting servo/slippage pump P1.1-2, the oil driven pump P1.1-3 that looses that is provided with of the first main pump P1.1-1, with the supporting rotary pump P1.2-2 that is provided with of the second main pump P1.2-1; With supporting auxiliary/load pump P1.3-2, the anti-hypsokinesis pump P1.3-3 of being provided with of the 3rd main pump P1.3-1, servo/slippage pump P1.4-2 is set with the 4th main pump P1.4-1 is supporting; The set-up mode of the second pump group is consistent with the first pump group; In the second pump group with supporting servo/slippage pump P2.1-2, the oil driven pump P2.1-3 that looses that is provided with of the first main pump P2.1-1; With the supporting rotary pump P2.2-2 that is provided with of the second main pump P2.2-1; With supporting auxiliary/load pump P2.3-2, the anti-hypsokinesis pump P2.3-3 of being provided with of the 3rd main pump P2.3-1, servo/slippage pump P2.4-2 is set with the 4th main pump P2.4-1 is supporting.In whole hydraulic system oil circuit, servo/repairing oil circuit, draining/oil return circuit and flushing oil circuit etc. correspondingly are set, further improve double dynamical closed type hydraulic system.
In this mode of execution, twin-enginedly drive the combination of identical pump group respectively, during twin-engined work, synchronization control, power uses balanced; The twice of system effectiveness when system effectiveness is monomotor work during twin-engined work when installation process or workload are not enough, can use monomotor work to practice thrift fuel oil.
Solenoid directional control valve related in the above closed type hydraulic system is by automatically controlled program control; Working connection in a whole set of dual power source (the first motor E1 and the second motor E2) and servo/repairing oil circuit, draining/oil return circuit, flushing oil circuit etc. and electric control system all can be taked modular design; Be located at independently in the power shipping container, get final product through various oil circuit output interfaces, can design the rapid pipe joint assembled panel with outside only the getting in touch of power shipping container; Realize connecting fast; Reduced being connected of hydraulic circuit and electric cable, the dismounting of convenient each transition, thus make whole enclosed power source system form large-scale hydraulic power unit.
More than a kind of switching valve that the utility model provided and the double dynamical closed type hydraulic system that has this switching valve have been carried out detailed introduction.Used concrete example among this paper the principle and the mode of execution of the utility model are set forth, above embodiment's explanation just is used to help to understand the method and the core concept thereof of the 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 (11)
1. a switching valve is characterized in that, comprises at least one switching unit, and said switching unit has a pair of actuator port, also has at least two butt joint pump hydraulic fluid ports, and return opening (T); And in its valve body:
Connect the corresponding pair of control valve that is provided with of pump hydraulic fluid port, the control port that each said control valve all has the first main hydraulic fluid port, the second main hydraulic fluid port and controls the said first main hydraulic fluid port and the said second main hydraulic fluid port break-make with each to said; And each two said first main hydraulic fluid port to said control valve is communicated with the corresponding said hydraulic fluid port of a butt joint pump respectively, and each two said second main hydraulic fluid port to said control valve is communicated with a pair of said actuator port respectively;
With each to said control valve with each to the said selector valve that connects the corresponding setting of pump hydraulic fluid port, in first working position, each to said control port of said control valve all with the corresponding a pair of said pump hydraulic fluid port connection that connects; In second working position, the said control port of each said control valve all is communicated with said return opening (T).
2. switching valve according to claim 1 is characterized in that said control valve is cartridge valve.
3. double dynamical closed type hydraulic system; Comprise hydraulic actuator; It is characterized in that, comprise first motor (E1) and second motor (E2), and the pump group that drives by said first motor (E1) and said second motor (E2); Each said pump group is communicated with hydraulic actuator through switching valve; Said switching valve is claim 1 or 2 described switching valves, and the both sides hydraulic fluid port of oil hydraulic pump is communicated with a pair of said pump hydraulic fluid port that connects of switching unit in the said switching valve in each said pump group, and the both sides hydraulic fluid port of said hydraulic actuator is communicated with a pair of said actuator port of switching unit described in the said switching valve.
4. double dynamical closed type hydraulic system according to claim 3 is characterized in that, said switching unit has two pairs of said pump hydraulic fluid ports that connect, and is provided with corresponding said control valve of two couples and the two said selector valves that are provided with in its valve body.
5. double dynamical closed type hydraulic system according to claim 4 is characterized in that, has five groups of said switching units in the said switching valve.
6. double dynamical closed type hydraulic system according to claim 5; It is characterized in that; Have first switching valve, by said first motor (E1) and the separately-driven first pump group of said second motor (E2) and the second pump group, oil hydraulic pump comprises first main pump and second main pump in said first pump group and the said second pump group; The both sides hydraulic fluid port of first main pump (P2.1-1) in first main pump (P1.1-1) and the said second pump group in the said first pump group is communicated with the said pump hydraulic fluid port that connects of two couples of three said switching units in the said switching valve respectively; The both sides hydraulic fluid port of second main pump (P2.2-1) in second main pump (P1.2-1) and the said second pump group in the said first pump group is communicated with in the said switching valve the said pump hydraulic fluid port that connects of two couples of two said switching units in addition respectively.
7. double dynamical closed type hydraulic system according to claim 6 is characterized in that, the first pump group and the second pump group also include the 3rd main pump and the 4th main pump, also have second switching valve; The both sides hydraulic fluid port of the 3rd main pump (P2.3-1) in the 3rd main pump (P1.3-1) and the said second pump group in the said first pump group is communicated with the said pump hydraulic fluid port that connects of two couples of three said switching units in said second switching valve respectively; In the said first pump group in the 4th main pump (P1.4-1) and the said second pump group both sides hydraulic fluid port of the 4th main pump (P2.4-1) be communicated with the said pump hydraulic fluid port that connects of two couples of two said switching units in said second switching valve respectively.
8. according to claim 6 or 7 described double dynamical closed type hydraulic systems; It is characterized in that a pair of said actuator port of three said switching units is communicated with the both sides hydraulic fluid port that principal arm luffing motor (C1), tower arm luffing motor (C2), left lateral are walked motor (C4) respectively in said first switching valve; In said first switching valve in addition a pair of said actuator port of two said switching units be communicated with the both sides hydraulic fluid port that first main hoist hoist motor (C3) and the said left lateral walked motor (C4) respectively.
9. double dynamical closed type hydraulic system according to claim 8; It is characterized in that; Be communicated with a pair of said actuator port that said left lateral is walked two said switching units of motor (C4) both sides hydraulic fluid port in said first switching valve, merging is arranged on the valve body of said first switching valve.
10. double dynamical closed type hydraulic system according to claim 9; It is characterized in that a pair of said actuator port of three said switching units is communicated with the both sides hydraulic fluid port that single pulley hoist motor (C5), mast luffing motor (C6), right lateral are walked motor (C8) respectively in said second switching valve; The a pair of said actuator port of two said switching units is communicated with the both sides hydraulic fluid port that the second main hoist motor (C7) that hoists, said right lateral are walked motor (C8) respectively in said second switching valve.
11. double dynamical closed type hydraulic system according to claim 10; It is characterized in that; Be communicated with a pair of said actuator port that said right lateral is walked two said switching units of motor (C8) both sides hydraulic fluid port in said second switching valve, merging is arranged on the valve body of said second switching valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201509133U CN202125475U (en) | 2011-05-12 | 2011-05-12 | Switching valve and double-power closed hydraulic system with the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201509133U CN202125475U (en) | 2011-05-12 | 2011-05-12 | Switching valve and double-power closed hydraulic system with the same |
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| Publication Number | Publication Date |
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| CN202125475U true CN202125475U (en) | 2012-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011201509133U Expired - Lifetime CN202125475U (en) | 2011-05-12 | 2011-05-12 | Switching valve and double-power closed hydraulic system with the same |
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| CN (1) | CN202125475U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155453A (en) * | 2011-05-12 | 2011-08-17 | 徐工集团工程机械股份有限公司建设机械分公司 | Switching valve and double-motive power closed hydraulic system with switching valve |
| CN102788055A (en) * | 2012-08-07 | 2012-11-21 | 徐工集团工程机械股份有限公司 | Hydraulic system of wrecker |
| WO2021004419A1 (en) * | 2019-07-05 | 2021-01-14 | 章睿承 | Multi-power source composite control device |
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2011
- 2011-05-12 CN CN2011201509133U patent/CN202125475U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155453A (en) * | 2011-05-12 | 2011-08-17 | 徐工集团工程机械股份有限公司建设机械分公司 | Switching valve and double-motive power closed hydraulic system with switching valve |
| CN102155453B (en) * | 2011-05-12 | 2014-10-08 | 徐工集团工程机械股份有限公司建设机械分公司 | Switching valve and double-motive power closed hydraulic system with switching valve |
| CN102788055A (en) * | 2012-08-07 | 2012-11-21 | 徐工集团工程机械股份有限公司 | Hydraulic system of wrecker |
| CN102788055B (en) * | 2012-08-07 | 2015-03-25 | 徐工集团工程机械股份有限公司 | Hydraulic system of wrecker |
| WO2021004419A1 (en) * | 2019-07-05 | 2021-01-14 | 章睿承 | Multi-power source composite control device |
| JP2022539793A (en) * | 2019-07-05 | 2022-09-13 | 金徳創新技術股▲分▼有限公司 | Dual power source compound controller |
| JP7321607B2 (en) | 2019-07-05 | 2023-08-07 | 金徳創新技術股▲分▼有限公司 | Dual power source compound controller |
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