CN103640975A - Hydraulic control handle system - Google Patents
Hydraulic control handle system Download PDFInfo
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- CN103640975A CN103640975A CN201310643923.4A CN201310643923A CN103640975A CN 103640975 A CN103640975 A CN 103640975A CN 201310643923 A CN201310643923 A CN 201310643923A CN 103640975 A CN103640975 A CN 103640975A
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- 239000003921 oil Substances 0.000 claims abstract description 266
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 54
- 239000012530 fluid Substances 0.000 claims description 52
- 230000002441 reversible effect Effects 0.000 claims description 19
- 239000002828 fuel tank Substances 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 description 25
- 230000000875 corresponding effect Effects 0.000 description 16
- 238000010586 diagram Methods 0.000 description 9
- 230000005611 electricity Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 3
- 239000010729 system oil Substances 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000006837 decompression Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
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Abstract
The invention discloses a hydraulic control handle system, which comprises a pressure oil source (1), a hydraulic control handle and an operation control loop which are sequentially connected through an oil path, wherein the operation control loop is operated through the hydraulic control handle to realize operation control, the hydraulic control handle system also comprises a proportional pressure reducing valve (10) and a controller for controlling the proportional pressure reducing valve, the proportional pressure reducing valve is arranged on a handle oil inlet oil path (V1) between the pressure oil source and an oil inlet (P) of the hydraulic control handle, and the controller is electrically connected with the proportional pressure reducing valve to control the oil pressure of hydraulic oil flowing through the proportional pressure reducing valve. Therefore, the opening degree of the proportional pressure reducing valve is controlled and set through a controller such as computer software and the like, and the mode of increasing control or replacing a manual operation hydraulic control handle in a man-machine interface control mode can be realized, so that manual operation labor operation is avoided, and the operation and control are more accurate. In addition, the movement control and the like can be realized by combining an electric control mode with a proportional pressure reducing valve.
Description
Technical field
The present invention relates to a kind of control system of hydraulic control handle, the hydraulic control lever system of controlling is controlled or moved to especially a kind of man-machine interface that can realize.
Background technology
Car hosit is generally comprised of a few class actuating units such as master winch, secondary elevator, luffing, flexible, revolutions.In the use procedure of car hosit, operator handles to each actions such as master winch, secondary elevator, luffing, flexible, revolutions the line speed of going forward side by side by operation hydraulic control handle and regulates.Particularly, car hosit generally has two hydraulic control handles, controls five actuating units motion of totally ten directions of car hosit by two hydraulic control handles.Five actuating units are respectively: master winch, secondary elevator, flexible, luffing, revolution, the motion of ten directions respectively: master file is kicked up, master winch falls, secondary hoisting crane, secondary elevator fall, semi-girder, contracting arm, luffing rise, luffing falls, left revolution, right-hand rotation.The work speed of each actuating unit is relevant with the aperture of its control handle, the work speed of handle aperture and each actuating unit is proportional, handle aperture is larger, the work speed of each actuating unit is larger, and car hosit operator can obtain a satisfied work speed by regulating handle aperture.
Shown in Fig. 1 and Fig. 2, be respectively the manipulation controlling party of left handle in car hosit and right handles to schematic diagram.Fig. 3 is the hydraulic schematic diagram with the hydraulic control lever system of above-mentioned left handle and right handles.Wherein, the action orientation of handle orientation figure and each actuating unit corresponds to: the first hydraulic control handle 2(is left handle) manipulation control azimuth L1(figure in to the right) control the right-hand rotation motion of revolution operation control circuit, control the right-hand rotation operation control circuit 12 of revolution operation control circuit, below similar; Handle control azimuth L3(left) control the left gyroscopic movement of revolution operation control circuit, handle control azimuth L2(downward) control the contracting arm action of flexible operation control circuit or the secondary hoisting crane action of secondary elevator operation control circuit, handle control azimuth L4(upwards) control the action that falls of the flexible stretch of operation control circuit or the secondary elevator of secondary elevator operation control circuit.The second hydraulic control handle 3(is right handles) manipulation control azimuth R1(figure in left) luffing of controlling luffing operation control circuit plays action, handle control azimuth R3(to the right) action that falls of the luffing of controlling luffing operation control circuit, handle control azimuth R2(upwards) action that falls of the master winch of controlling master winch operation control circuit, handle control azimuth R4(downward) master winch of controlling master winch operation control circuit plays action.
Referring to Fig. 3, pressure oil-source 1 is the oil inlet P fuel feeding to two hydraulic control handles by handle oil-feed oil circuit V1, the oil return inlet T of two hydraulic control handles is passed through handle oil return circuit V2 to system oil tank drainback, a plurality of actuator ports of the first hydraulic control handle 2 connect respectively by corresponding many handle oil feeding line V4 and control left revolution operation control circuit 11, right-hand rotation operation control circuit 12, semi-girder operation control circuit 13, contracting arm operation control circuit 14, secondary elevator step-down operation control loop 15 and secondary winding lifting operation control circuit 16, a plurality of actuator ports of the second hydraulic control handle 3 connect respectively by corresponding many handle oil feeding line V4 and control luffing step-down operation control loop 17, amplitude-variation hoisting operation control circuit 18, master winch step-down operation control loop 19 and the master winch operation control circuit 20 that hoists.In addition, visible in Fig. 3, the actuator port of the first hydraulic control handle 2 is connected with the 4th change-over valve 9 by handle oil feeding line V4, when the 6th electromagnetic switch Y6 of the 4th change-over valve 9 and the 7th electromagnetic switch Y7 all must not electricity, the manipulation control azimuth L2(of left handle is downward) and L4(make progress) respectively correspondence controlling contracting arm operation control circuit 14 and semi-girder operation control circuit 13.The 6th electromagnetic switch Y6 in the 4th change-over valve 9 and the 7th electromagnetic switch Y7 obtain when electric, and the manipulation control azimuth L2(of left handle is downward) and L4(make progress) respectively correspondence controlling secondary winding lifting operation control circuit 16 and secondary elevator step-down operation control loop 15.
Visible from the above description, operator need to control direction and the aperture of hydraulic control handle when operation, and even the second change-over valve must dead electricity.When needs are implemented accurately to control, crane operation person need to carry out adjusting constantly, repeatedly to obtaining the steady speed of a satisfied low cruise to handling hydraulic control handle.This continuous adjustment operation handle has repeatedly increased the weight of car hosit operator's working strength, very easily becomes tired.
Summary of the invention
The object of this invention is to provide a kind of hydraulic control lever system, can at least increase man-machine interface and control with handled easily personnel.
For achieving the above object, the invention provides a kind of hydraulic control lever system, this system comprises pressure oil-source, hydraulic control handle and passes through the operation control circuit of this hydraulic control stick control, wherein, this hydraulic control lever system also comprises proportional pressure-reducing valve and for controlling the controller of this proportional pressure-reducing valve, this proportional pressure-reducing valve is arranged on the handle oil-feed oil circuit between described pressure oil-source and the oil inlet of described hydraulic control handle, and described controller and described proportional pressure-reducing valve are electrically connected to control the oil pressure of hydraulic oil of described proportional pressure-reducing valve of flowing through.
Preferably, described hydraulic control handle comprises oil inlet, return opening and actuator port, and described actuator port connects described operation control circuit, is provided with the first connection hydraulic fluid port, second and connects hydraulic fluid port, oil outlet and the first electromagnetic switch in described proportional pressure-reducing valve;
Wherein, described first connects hydraulic fluid port connects described pressure oil-source, described second connects hydraulic fluid port connects fuel tank, described oil outlet connects the oil inlet of described handle by described handle oil-feed oil circuit, described the first electromagnetic switch is used for controlling described oil outlet and is optionally communicated with described the first connection hydraulic fluid port or the second connection hydraulic fluid port.
Preferably, described handle oil-feed oil circuit also comprises bleed off circuit, pressure oil-source described in one end hydraulic connecting of this bleed off circuit, the other end is connected on the described handle oil-feed oil circuit of oil outlet one side of described proportional pressure-reducing valve, is provided with for controlling conducting or ending the first change-over valve of this bleed off circuit in described bleed off circuit.
Preferably, in described the first change-over valve, be formed with the first internal oil passages and second internal oil passages of switching over, in described the first internal oil passages, be provided with the first check valve, when described the first change-over valve switches to described the first internal oil passages, described the first check valve can cutoff pressure oil sources pressure oil by described bleed off circuit, flow to the oil inlet of described hydraulic control handle, when described the first change-over valve switches to described the second oil circuit, bleed off circuit described in this second internal oil passages conducting.
Preferably, described bleed off circuit is formed with first and is connected in parallel a little on the described handle oil-feed oil circuit of oil outlet one side of described proportional pressure-reducing valve, on described handle oil-feed oil circuit, be also provided with the second check valve between the oil outlet and described first of described proportional pressure-reducing valve is connected in parallel a little, can conducting to flow to hydraulic oil the oppositely cut-off of the oil inlet direction of described hydraulic control handle from described pressure oil-source.
Preferably, above-mentioned hydraulic control lever system also comprises the second change-over valve and shuttle valve, described the second change-over valve has hydraulic oil entrance, oil return hydraulic fluid port and hydraulic oil outlet, between the first input hydraulic fluid port of the actuator port of described hydraulic control handle and described shuttle valve, be connected with handle oil feeding line, between the hydraulic oil entrance of the oil outlet of described proportional pressure-reducing valve and described the second change-over valve, be connected with control working oil path, between the second input hydraulic fluid port of the hydraulic oil outlet of described the second change-over valve and described shuttle valve, be connected with control oil feeding line, the output oil port of described shuttle valve connects described operation control circuit.
Preferably, this hydraulic control lever system also comprises the 3rd change-over valve, and the 3rd change-over valve is arranged on described handle oil-feed oil circuit to control conducting or to end this handle oil-feed oil circuit.
Preferably, described the second change-over valve and the 3rd change-over valve are solenoid directional control valve, between described the second change-over valve and the 3rd change-over valve, form electromagnetic switch interlocking, with the one conducting in described handle oil-feed oil circuit and described control working oil path, described pressure oil-source is outwards ended for seasonable another one.
Preferably, this hydraulic control lever system also comprises mobile control box, and this mobile control box and described the second change-over valve communication are to control this second change-over valve.
Preferably, described operation control circuit comprises positive operation control loop and reverse operating control loop, described handle oil feeding line comprises forward handle oil feeding line and reverse handle oil feeding line, described shuttle valve comprises the first shuttle valve and the second shuttle valve, described control working oil path comprises forward control oil feeding line and the reverse oil feeding line of controlling, and the hydraulic oil outlet of described the second change-over valve comprises that the first hydraulic oil exports and the outlet of the second hydraulic oil;
Wherein, the output oil port hydraulic connecting of described the first shuttle valve is in described positive operation control loop, and the output oil port hydraulic connecting of described the second shuttle valve is in described reverse operating control loop; Described forward handle oil feeding line is connected between the first input hydraulic fluid port and one of them actuator port of described hydraulic control handle of described the first shuttle valve, and described reverse handle oil feeding line is connected to first input hydraulic fluid port and wherein between another actuator port of described hydraulic control handle of described the second shuttle valve; Described forward control oil feeding line is connected between the second input hydraulic fluid port of described the first hydraulic oil outlet and described the first shuttle valve, and described reverse control oil feeding line is connected between the second input hydraulic fluid port of described the second hydraulic oil outlet and described the second shuttle valve.
Preferably, this hydraulic control lever system comprises a plurality of operation control circuits, the plurality of operation control circuit is connected on described hydraulic control handle by described handle oil feeding line respectively, and described in each, operation control circuit is connected described proportional pressure-reducing valve by described the second change-over valve with being connected separately with control working oil path respectively.
Preferably, described hydraulic control handle comprises the first hydraulic control handle and the second hydraulic control handle, a plurality of described operation control circuits comprise revolution operation control circuit, flexible operation control circuit, luffing operation control circuit, master winch operation control circuit and secondary elevator operation control circuit, described the first hydraulic control handle connects respectively and handles described revolution operation control circuit, flexible operation control circuit and secondary elevator operation control circuit, and described the second hydraulic control handle connects respectively and handles described luffing operation control circuit and master winch operation control circuit;
Wherein, wherein both both share by this described handle oil feeding lines in described revolution operation control circuit, flexible operation control circuit and secondary elevator operation control circuit are connected on described the first hydraulic control handle, and described both shared handle oil feeding lines are provided with the 4th change-over valve and connect to realize switching over.
According to technique scheme, in hydraulic control lever system of the present invention, set up proportional pressure-reducing valve and controller thereof on the handle oil-feed oil circuit between pressure oil-source and the oil inlet of hydraulic control handle, this controller is for controlling the oil pressure of the hydraulic oil of the proportional pressure-reducing valve of flowing through.By controller such as computer, control the aperture that software etc. carrys out preset proportion reducing valve like this, can realize increasing with man-machine interface mode and control or alternative M/C hydraulic control handle mode, thereby exempt manually operated labour's operation, make to control more accurate.In addition, can also in conjunction with proportional pressure-reducing valve, realize mobile control by automatically controlled mode, or directly use handle to control.
Other features and advantages of the present invention partly in detail are described the specific embodiment subsequently.
Accompanying drawing explanation
Accompanying drawing is to be used to provide a further understanding of the present invention, and forms a part for specification sheets, is used from explanation the present invention, but is not construed as limiting the invention with the specific embodiment one below.In the accompanying drawings:
Fig. 1 is that the manipulation controlling party of the left handle in the car hosit of prior art is to schematic diagram;
Fig. 2 is that the manipulation controlling party of the right handles in the car hosit of prior art is to schematic diagram;
Fig. 3 is according to the hydraulic schematic diagram of the hydraulic control lever system in the car hosit of prior art;
Fig. 4 is according to the hydraulic schematic diagram of the hydraulic control lever system of the preferred embodiment of the present invention, wherein illustrates the oil circuit coupled condition of each parts while carrying out control operation by man-machine interface;
Fig. 5 is the hydraulic schematic diagram of the hydraulic control lever system shown in Fig. 4, wherein illustrates the oil circuit coupled condition of each parts while carrying out control operation separately by hydraulic control handle; And
Fig. 6 is the hydraulic schematic diagram of the hydraulic control lever system shown in Fig. 4, wherein illustrates the oil circuit coupled condition of each parts while carrying out control operation by mobile control box.
description of reference numerals
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is elaborated.Should be understood that, the specific embodiment described herein only, for description and interpretation the present invention, is not limited to the present invention.
In the present invention, in the situation that not doing contrary explanation, the noun of locality of use as " upper and lower " normally for direction shown in the drawings or for each parts mutual alignment relationship description word vertically, on vertical or gravity direction." left and right " refers to for paper horizontal left and right directions or the left and right directions for bridge operation person.
As shown in Figures 4 to 6, the invention provides a kind of hydraulic control lever system, this system comprises provides the pressure oil-source of pressure oil 1, hydraulic control handle and operation control circuit, and this operation control circuit is controlled to realize operation by hydraulic control stick control.Wherein, this hydraulic control lever system also comprises proportional pressure-reducing valve 10 and for controlling the controller of this proportional pressure-reducing valve 10, it is upper that this proportional pressure-reducing valve 10 is arranged on handle oil-feed oil circuit V1 between pressure oil-source 1 and the oil inlet P of hydraulic control handle, and controller and proportional pressure-reducing valve 10 are electrically connected to control the oil pressure of hydraulic oil of proportional pressure-reducing valve 10 of flowing through.As previously mentioned, can automatically control the aperture with preset proportion reducing valve 10 by controller such as computer software etc. like this, to realize the mode that increases control or alternative M/C hydraulic control handle by man-machine interface mode, thereby it is arduous to exempt manually operated excessive labour, make to control process also more accurate, timely.Specifically, can be referring to Fig. 4, on handle oil-feed oil circuit V1, be provided with after proportional pressure-reducing valve 10, when operation, hydraulic control handle can be got to an aperture position, be preferably its maximum opening position, now hydraulic control handle does not play depressurization, can only by control ratio reducing valve 10(, now be equivalent to hydraulic control handle) the electric current pressure that carries out oil-feed fluid regulate, thereby reach the object of accurate control.
Because the running velocity of operation control circuit is directly proportional to the hydraulic fluid pressure that passes into this operation control circuit, being therefore designed to passing ratio reducing valve 10 regulates pressure.As shown in Figure 4, in this proportional pressure-reducing valve 10, be provided with the first connection hydraulic fluid port J1, second connects hydraulic fluid port J2, oil outlet C and the first electromagnetic switch Y1, hydraulic control handle comprises oil inlet P, oil return inlet T and actuator port (the left handle first actuator port LW1 of the left handle in figure for example, left handle the second actuator port LW2, left handle the 3rd actuator port LW3 and left handle the 4th actuator port LW4, the right handles first actuator port RW1 of right handles, right handles the second actuator port RW2, right handles the 3rd actuator port RW3 and right handles the 4th actuator port RW4), each operation control circuit of the corresponding connection of each actuator port.Wherein, first of proportional pressure-reducing valve 10 connects hydraulic fluid port J1 Bonding pressure oil sources 1, the second and connects hydraulic fluid port J2 and the oil return inlet T of hydraulic control handle and be directly connected between fuel tank or the two and be connected with handle oil return circuit V2.Oil outlet C is by the oil inlet P of handle oil-feed oil circuit V1 connecting handle, and the first electromagnetic switch Y1 is used for controlling oil outlet C and is optionally communicated with the first connection hydraulic fluid port J1 or the second connection hydraulic fluid port J2.Like this, just can obtain and electricly make oil outlet C be connected hydraulic fluid port J1 with first to be communicated with by controlling the first electromagnetic switch Y1, the pressure oil of pressure oil-source 1 this proportional pressure-reducing valve 10 of flowing through.Otherwise, make the first electromagnetic switch Y1 dead electricity, oil outlet C is connected hydraulic fluid port J2 and is communicated with second, below will be by handle oil return circuit V2 to system oil tank drainback by the residual pressure oil in the control working oil path V5 addressing.
When needs do not carry out man-machine interface manipulation by proportional pressure-reducing valve by hydraulic control stick control separately, when crane operation person carries out routine work by hydraulic control handle, now need relative set bleed off circuit to walk around this proportional pressure-reducing valve 10.Hydraulic schematic diagram while therefore, having shown only by stick control as Fig. 5.Wherein, handle oil-feed oil circuit V1 also comprises bleed off circuit V3, and one end of this bleed off circuit V3 is connected to pressure oil-source 1, and the other end is connected on the handle oil-feed oil circuit V1 of oil outlet C mono-side of proportional pressure-reducing valve 10.Wherein, in bleed off circuit V3, be provided with the first change-over valve 4 for controlling conducting or ending this bleed off circuit V3.As a kind of preferred constructive form, the first change-over valve 4 shown in Fig. 4 to Fig. 6 is solenoid directional control valve, in described the first change-over valve 4, be formed with the first internal oil passages and second internal oil passages of switching over, in the first internal oil passages, be provided with the first check valve 41, when the first change-over valve 4 switches to the first internal oil passages, pressure oil that can cutoff pressure oil sources 1 by the first check valve 41 flows to oil inlet P by this bleed off circuit V3, with mixing ratio reducing valve when mobile operating or the man-machine manipulation 10, use, below will address; When the first change-over valve 4 switches to the second oil circuit, this second internal oil passages conducting first change-over valve 4.As shown in Figure 5, during separately by hydraulic control stick control, this bleed off circuit V3 answers conducting, by controlling the second electromagnetic switch Y2 dead electricity of the first change-over valve 4, make the second internal oil passages conducting, the first electromagnetic switch Y1 dead electricity of control ratio reducing valve 10 simultaneously, makes the pressure oil proportional pressure-reducing valve 10 of not flowing through, only by bleed off circuit V3 and handle oil-feed oil circuit V1, flow to hydraulic control handle, conveniently only by hydraulic control handle, operate.Now, the hydraulic oil that enters hydraulic control handle by bleed off circuit V3 does not pass through the decompression of proportional pressure-reducing valve 10, does not produce pressure drop.Therefore, by hydraulic control handle regulating handle aperture, the pressure oil pressure that flows to operation control circuit can be controlled, thereby the work speed of operating personal expectation can be obtained.Particularly, this bleed off circuit V3 is formed with first K1 that is connected in parallel on the handle oil-feed oil circuit V1 of the oil outlet C of proportional pressure-reducing valve 10 side, oil inlet one side at proportional pressure-reducing valve 10 can be directly connected to the first connection hydraulic fluid port J1, and then be connected to pressure oil-source 1, also can be connected to as shown in Figure 4 second K2 that is connected in parallel.In addition, the oil outlet C and first that also can be provided preferably with at proportional pressure-reducing valve 10 on handle oil-feed oil circuit V1 the second check valve 5 between a K1 that is connected in parallel, with can be on this section of handle oil-feed oil circuit V1 conducting from pressure oil-source 1, flow to hydraulic oil the oppositely cut-off of the oil inlet P direction of hydraulic control handle.By the second check valve 5 is set, known referring to Fig. 5, when carrying out hydraulic control handle individual operation, can prevent that the pressure oil flowing into from bleed off circuit V3 from not flowing to hydraulic control handle, but proportional pressure-reducing valve 10 oil returns of flowing through are to system fuel tank.
In addition, in the responsiveness of operation control circuit, require little and for handled easily person leaves operator's compartment, the present invention can also realize further the mobile of operation control circuit controlled or Long-distance Control.For this reason, as shown in Figure 6, this hydraulic control lever system also comprises the second change-over valve 6 and shuttle valve 7, the second change-over valve 6 has hydraulic oil entrance A, oil return hydraulic fluid port T1 and hydraulic oil outlet, between the first input hydraulic fluid port of the actuator port of hydraulic control handle and shuttle valve 7, be connected with handle oil feeding line V4, between the hydraulic oil entrance A of the oil outlet C of proportional pressure-reducing valve 10 and the second change-over valve 6, be connected with and control working oil path V5, between the second input hydraulic fluid port of the hydraulic oil outlet of the second change-over valve 6 and shuttle valve 7, be connected with and control oil feeding line V6, the output oil port hydraulic connecting of shuttle valve 7 is in operation control circuit.Wherein, the second change-over valve 6 is optionally communicated with working oil path V5 or oil return hydraulic fluid port T1 for controlling oil feeding line V6, and the hydraulic oil outlet of the second change-over valve 6 can be one or two, with correspondence, controls one or two operation control circuit.The second change-over valve 6 of the preferred form shown in Fig. 4 to Fig. 6 is common three position four-way directional control valve, there is the first hydraulic oil outlet B1 and the second hydraulic oil outlet B2, by two, control two operation control circuits that oil feeding line V6 is connected in forward and reverse control respectively, control the second input hydraulic fluid port that oil feeding line V6 is connected respectively to two shuttle valves 7 for two.Left position or right position at three position four-way directional control valve, when wherein one control oil feeding line V6 and control working oil path V5 and be connected, while working to promote corresponding operation control circuit, another operation control circuit is by corresponding control oil feeding line V6 and oil return hydraulic fluid port T1 oil return.In other words, during in two operation control circuits of forward and reverse control one work, another stops, and forms interlocked relationship to ensure safe in operation.When the meta of three position four-way directional control valve, two operation control circuits of forward and reverse control all quit work.Certainly, those skilled in the art will be understood that, the second change-over valve 6 of the three-position four-way valve form shown in Fig. 4 to Fig. 6 is also replaceable is two two-bit triplet change-over valves, each two-bit triplet change-over valve has single hydraulic oil and exports to connect a control oil feeding line V6, and the hydraulic oil entrance of each two-bit triplet change-over valve all connects controls working oil path V5.But two two-bit triplet change-over valves now need to form interlocking, for example, when the spool of one of them two-bit triplet change-over valve is controlled working oil path V5 with corresponding control oil feeding line V6 in left position with conducting, the spool of another two-bit triplet change-over valve should be in right position so that another controls oil feeding line V6 oil return.
Like this, by the second change-over valve 6 and shuttle valve 7 and corresponding oil circuit thereof are set, can be used for mobile this hydraulic control lever system of controlling.As Fig. 6, now can make oil outlet C be connected hydraulic fluid port J1 with first to be communicated with by controlling the first electromagnetic switch Y1, make the pressure oil of pressure oil-source 1 this proportional pressure-reducing valve 10 of flowing through, and at oil outlet C, by controlling working oil path V5, flow to the hydraulic oil entrance A of the second change-over valve 6, control again the 4th electromagnetic switch Y4 or the 5th electromagnetic switch Y5 of the second change-over valve 6 that is preferably electromagnetic valve form, can make to control control oil feeding line V6 corresponding to operation control circuit that working oil path V5 is communicated with want control, pressure oil flows to this institute by this control oil feeding line V6 through shuttle valve 7 and wants the operation control circuit of controlling.Wherein, the original intention that arranges of the second change-over valve 6 is to control working oil path V5 and control conducting or cut-off between oil feeding line V6 described in switching controls, the setting of shuttle valve 7 is relatively to control the hydraulic oil pressure in oil feeding line V6 and handle oil feeding line V4, makes the oil circuit that has passed into pressure oil in two tournament oil paths be connected to corresponding operation control circuit.In Fig. 6, need to control the second electromagnetic switch Y2 obtains electric with cutoff pressure oil this bleed off circuit V3 that flows through, and the setting of the 3rd change-over valve 8 as described below has prevented to safety and reliability that pressure oil from flowing to the oil inlet P of hydraulic control handle, and then cause in handle oil feeding line V4 feed pressure oil, thereby cause, control confusion, below will specifically set forth.
When pressure oil can enter respectively and control in working oil path V5 or handle oil feeding line V4 from the oil outlet C outflow of proportional pressure-reducing valve 10, two-way oil circuit converges and carries out pressure ratio at the two ends of shuttle valve 7 input hydraulic fluid port.Wherein, the hydraulic oil of the hydraulic control handle of flowing through is through the depressurization of this hydraulic control handle, and pressure further reduces, and can make to control oil feeding line V6 and by shuttle valve 7 hydraulic connectings, arrive the operation control circuit of required control.But to be on the safe side, on the handle oil-feed oil circuit V1 in present embodiment, be also provided preferably with conducting or end the 3rd change-over valve 8 of described handle oil-feed oil circuit V1.In the present embodiment, be preferably formed with the first inner oil circuit and the second inner oil circuit that is connected of connecting of switching in the 3rd change-over valve 8, the first inner connection in oil circuit was provided with the 3rd check valve 81.When the 3rd change-over valve 8 switches to the first inner connection oil circuit, first inner connect the hydraulic oil that the 3rd check valve 81 in oil circuit can cutoff pressure oil sources 1 and by the 3rd change-over valve 8, flows to the oil inlet P of hydraulic control handle, when the 3rd change-over valve 8 switches to the second inner connection oil circuit, this the second inner connection oil circuit conducting the 3rd change-over valve 8, and then conducting handle oil-feed oil circuit V1.By this structure design of the 3rd change-over valve 8, when carrying out remote operation, as shown in Figure 6, the 3rd electromagnetic switch Y3 that can be preferably the 3rd change-over valve 8 of electromagnetic valve form by control obtains electric, make pressure oil not flow to hydraulic control handle by handle oil-feed oil circuit V1, thereby impelling pressure oil to flow through successively reliably controls working oil path V5, the second change-over valve 6, control oil feeding line V6 and shuttle valve 7 flows to corresponding operation control circuit, carry out corresponding action and control.More preferably, between the 3rd change-over valve 8 and the second change-over valve 6, can be designed to electromagnetic switch interlocking, with the one conducting in handle oil-feed oil circuit V1 and control working oil path V6, pressure oil-source 1 outwards be supplied to seasonable another one cut-off.Be understandable that, between the 3rd change-over valve 8 and the second change-over valve 6, also can not interlock.Thereby as shown in Figure 4 and Figure 5, when carrying out handle individual operation or man-machine interface manipulation, can make the second change-over valve 6 in meta so that control working oil path V5 cut-off conducting handle oil-feed oil circuit V1, prevent to control in oil feeding line V6 and handle oil feeding line V4 and have pressure oil simultaneously.
When carrying out Long-distance Control or mobile control, can design corresponding mobile control box (not shown), this mobile control box and the second change-over valve 6 communications are to control this second change-over valve 6, even integrated control the first change-over valve 4 of mobile control box, the 3rd change-over valve 8, proportional pressure-reducing valve 10 etc., thereby carry out corresponding foregoing various control, at this, no longer carefully state.
It should be noted that in addition, in construction machinery and equipment, for example, in the car hosit of present embodiment, operation control circuit can comprise positive operation control loop and reverse operating control loop, for example left revolution operation control circuit 11 and right-hand rotation operation control circuit 12, semi-girder operation control circuit 13 and contracting arm operation control circuit 14 etc.Therefore, as shown in Fig. 4, Fig. 5 or Fig. 6, the revolution operation control circuit of take is example, its positive operation control loop and reverse operating control loop are respectively left revolution operation control circuit 11 and right-hand rotation operation control circuit 12, and corresponding handle oil feeding line V4 can comprise forward handle oil feeding line and reverse handle oil feeding line.Same, shuttle valve 7 can comprise the first shuttle valve and the second shuttle valve, controls working oil path V6 and comprises forward control oil feeding line and oppositely control oil feeding line, the hydraulic oil outlet of the second change-over valve 6 comprises that the first hydraulic oil exports B1 and the second hydraulic oil outlet B2.Wherein, the output oil port hydraulic connecting of the first shuttle valve is in positive operation control loop, and the output oil port hydraulic connecting of the second shuttle valve is in reverse operating control loop.Forward handle oil feeding line is connected between the first input hydraulic fluid port and one of them actuator port of hydraulic control handle of the first shuttle valve, and oppositely handle oil feeding line is connected to first input hydraulic fluid port and wherein between another actuator port of hydraulic control handle of the second shuttle valve.Forward is controlled between the second input hydraulic fluid port that oil feeding line is connected to the first hydraulic oil outlet B1 and the first shuttle valve, oppositely controls oil feeding line and is connected to second of the second hydraulic oil outlet B2 and the second shuttle valve and inputs between hydraulic fluid port.Wherein, the second change-over valve 6 in present embodiment is the three position four-way electromagnetic valve of two automatically controlled forms, at the 5th electromagnetic switch Y5, obtains when electric, and the first hydraulic oil outlet B1 is communicated with hydraulic oil entrance A, and the second hydraulic oil exports B2 and is communicated with oil return hydraulic fluid port T1; At the 4th electromagnetic switch Y4, obtain when electric, the first hydraulic oil outlet B1 is communicated with oil return hydraulic fluid port T1, and the second hydraulic oil exports B2 and is communicated with hydraulic oil entrance A.In middle control position when (i.e. the 5th electromagnetic switch Y5 and the 4th electromagnetic switch Y4 all must not electricity), hydraulic oil entrance A cut-off, the first hydraulic oil outlet B1 and the second hydraulic oil outlet B2 are all connected to oil return hydraulic fluid port T1, and further connecting handle oil return circuit V2, to system oil tank drainback.Like this, when needs come Long-distance Control or man-machine interface operation to control left revolution operation control circuit 11 by controller, can control the 5th electromagnetic switch Y5 obtains electric with conducting control working oil path V5 and corresponding control working oil path V6, pressure oil turns round operation control circuit 11 fuel feeding left through the left side shuttle valve 7 in figure, carries out accurate action control and remote Mobile Control.
In addition, as previously mentioned, the hydraulic control lever system of the construction machinery and equipments such as car hosit generally includes a plurality of operation control circuits, the plurality of operation control circuit is connected on hydraulic control handle by handle oil feeding line V4 respectively, and each operation control circuit is connected proportional pressure-reducing valve 10 by the second change-over valve 6 with being connected separately with control working oil path V6 respectively.Like this, when comprising a plurality of operation control circuit, what each operation control circuit can be corresponding carries out the control of positive reverse action by second change-over valve 6.Yet in the car hosit of present embodiment, because hydraulic control handle comprises the first hydraulic control handle 2 and the second hydraulic control handle 3, and the plurality of operation control circuit comprises revolution operation control circuit, flexible operation control circuit, luffing operation control circuit, master winch operation control circuit and secondary elevator operation control circuit totally five systems, ten actions, two handles operate up and down can only control eight actions altogether.Therefore, special design the 4th change-over valve 9 to realize the same action direction of hydraulic control handle, can control by switching controls two actions of different operating control loop.As shown in Figure 5, the first hydraulic control handle 2(left handle) connect respectively and handle revolution operation control circuit, flexible operation control circuit and secondary elevator operation control circuit, the second hydraulic control handle 3(right handles) connect respectively and handle luffing operation control circuit and master winch operation control circuit.Wherein, in revolution operation control circuit, flexible operation control circuit and secondary elevator operation control circuit wherein both by this, both shared handle oil feeding line V4 are connected on the first hydraulic control handle 2, both shared handle oil feeding line V4 are provided with the 4th change-over valve 9 and connect to realize switching over.When the 6th electromagnetic switch Y6 of the 4th change-over valve 9 and the 7th electromagnetic switch Y7 all must not electricity, semi-girder operation control circuit 13 and contracting arm operation control circuit 14 are being controlled respectively in the upper and lower manipulation control azimuth of left handle.When the 6th electromagnetic switch Y6 and the 7th electromagnetic switch Y7 obtain when electric, secondary elevator step-down operation control loop 15 and secondary winding lifting operation control circuit 16 are being controlled respectively in the upper and lower manipulation control azimuth of the first hydraulic control handle 2.Like that, when thering is the operation control circuit of more number more, can correspondingly set up solenoid directional control valve to carry out switching controls.
Below describe by reference to the accompanying drawings the preferred embodiment of the present invention in detail; but; the present invention is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each concrete technical characterictic described in the above-mentioned specific embodiment, in reconcilable situation, can combine by any suitable mode, for fear of unnecessary repetition, the present invention is to the explanation no longer separately of various possible array modes.
In addition, between various embodiment of the present invention, also can carry out combination in any, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (12)
1. a hydraulic control lever system, this system comprises pressure oil-source (1), hydraulic control handle and by the operation control circuit of this hydraulic control stick control, it is characterized in that, this hydraulic control lever system also comprises proportional pressure-reducing valve (10) and for controlling the controller of this proportional pressure-reducing valve (10), this proportional pressure-reducing valve (10) is arranged on the handle oil-feed oil circuit (V1) between the oil inlet (P) of described pressure oil-source (1) and described hydraulic control handle, described controller is electrically connected to control the oil pressure of the hydraulic oil of the described proportional pressure-reducing valve (10) of flowing through with described proportional pressure-reducing valve (10).
2. hydraulic control lever system according to claim 1, it is characterized in that, described hydraulic control handle comprises oil inlet (P), return opening (T) and actuator port, described actuator port connects described operation control circuit, is provided with the first connection hydraulic fluid port (J1), second and connects hydraulic fluid port (J2), oil outlet (C) and the first electromagnetic switch (Y1) in described proportional pressure-reducing valve (10);
Wherein, described first connects hydraulic fluid port (J1) connects described pressure oil-source (1), described second connects hydraulic fluid port (J2) connects fuel tank, described oil outlet (C) connects the oil inlet (P) of described handle by described handle oil-feed oil circuit (V1), described the first electromagnetic switch (Y1) is optionally communicated with described the first connection hydraulic fluid port (J1) or the second connection hydraulic fluid port (J2) for controlling described oil outlet (C).
3. hydraulic control lever system according to claim 1, it is characterized in that, described handle oil-feed oil circuit (V1) also comprises bleed off circuit (V3), pressure oil-source (1) described in one end hydraulic connecting of this bleed off circuit (V3), it is upper that the other end is connected to the described handle oil-feed oil circuit (V1) of oil outlet (C) side of described proportional pressure-reducing valve (10), is provided with for controlling conducting or ending first change-over valve (4) of this bleed off circuit (V3) in described bleed off circuit (V3).
4. hydraulic control lever system according to claim 3, it is characterized in that, in described the first change-over valve (4), be formed with the first internal oil passages and second internal oil passages of switching over, in described the first internal oil passages, be provided with the first check valve (41), when described the first change-over valve (4) switches to described the first internal oil passages, described the first check valve (41) can cutoff pressure oil sources (1) pressure oil by described bleed off circuit (V3), flow to the oil inlet (P) of described hydraulic control handle, when described the first change-over valve (4) switches to described the second oil circuit, bleed off circuit (V3) described in this second internal oil passages conducting.
5. hydraulic control lever system according to claim 3, it is characterized in that, described bleed off circuit (V3) is formed with first point (K1) that is connected in parallel on the described handle oil-feed oil circuit (V1) of oil outlet (C) side of described proportional pressure-reducing valve (10), on described handle oil-feed oil circuit (V1), be also provided with and be positioned at the second check valve (5) that the oil outlet (C) and described first of described proportional pressure-reducing valve (10) is connected in parallel between point (K1), can conducting to flow to hydraulic oil the oppositely cut-off of oil inlet (P) direction of described hydraulic control handle from described pressure oil-source (1).
6. according to the hydraulic control lever system described in any one in claim 1-5, it is characterized in that, this hydraulic control lever system also comprises the second change-over valve (6) and shuttle valve (7), described the second change-over valve (6) has hydraulic oil entrance (A), oil return hydraulic fluid port (T1) and hydraulic oil outlet, between the first input hydraulic fluid port of the actuator port of described hydraulic control handle and described shuttle valve (7), be connected with handle oil feeding line (V4), between the oil outlet (C) of described proportional pressure-reducing valve (10) and the hydraulic oil entrance (A) of described the second change-over valve (6), be connected with and control working oil path (V5), between the second input hydraulic fluid port of the hydraulic oil outlet of described the second change-over valve (6) and described shuttle valve (7), be connected with and control oil feeding line (V6), the output oil port of described shuttle valve (7) connects described operation control circuit.
7. hydraulic control lever system according to claim 6, it is characterized in that, this hydraulic control lever system also comprises the 3rd change-over valve (8), and it is upper to control conducting or to end this handle oil-feed oil circuit (V1) that the 3rd change-over valve (8) is arranged on described handle oil-feed oil circuit (V1).
8. hydraulic control lever system according to claim 7, it is characterized in that, described the second change-over valve (6) and the 3rd change-over valve (8) are solenoid directional control valve, between described the second change-over valve (6) and the 3rd change-over valve (8), form electromagnetic switch interlocking, with the one conducting in described handle oil-feed oil circuit (V1) and described control working oil path (V6), described pressure oil-source (1) is outwards ended for seasonable another one.
9. hydraulic control lever system according to claim 6, is characterized in that, this hydraulic control lever system also comprises mobile control box, and this mobile control box and described the second change-over valve (6) communication are to control this second change-over valve (6).
10. hydraulic control lever system according to claim 6, it is characterized in that, described operation control circuit comprises positive operation control loop and reverse operating control loop, described handle oil feeding line (V4) comprises forward handle oil feeding line and reverse handle oil feeding line, described shuttle valve (7) comprises the first shuttle valve and the second shuttle valve, described control working oil path (V6) comprises forward control oil feeding line and oppositely controls oil feeding line, hydraulic oil outlet (the B1 of described the second change-over valve (6), B2) comprise the first hydraulic oil outlet (B1) and the second hydraulic oil outlet (B2),
Wherein, the output oil port hydraulic connecting of described the first shuttle valve is in described positive operation control loop, and the output oil port hydraulic connecting of described the second shuttle valve is in described reverse operating control loop; Described forward handle oil feeding line is connected between the first input hydraulic fluid port and one of them actuator port of described hydraulic control handle of described the first shuttle valve, and described reverse handle oil feeding line is connected to first input hydraulic fluid port and wherein between another actuator port of described hydraulic control handle of described the second shuttle valve; Described forward control oil feeding line is connected between the second input hydraulic fluid port of described the first hydraulic oil outlet (B1) and described the first shuttle valve, and described reverse control oil feeding line is connected between the second input hydraulic fluid port of described the second hydraulic oil outlet (B2) and described the second shuttle valve.
11. hydraulic control lever systems according to claim 10, it is characterized in that, this hydraulic control lever system comprises a plurality of operation control circuits, the plurality of operation control circuit is connected on described hydraulic control handle by described handle oil feeding line (V4) respectively, and described in each, operation control circuit is connected described proportional pressure-reducing valve (10) by described the second change-over valve (6) with being connected separately with control working oil path (V6) respectively.
12. hydraulic control lever systems according to claim 11, it is characterized in that, described hydraulic control handle comprises the first hydraulic control handle (2) and the second hydraulic control handle (3), a plurality of described operation control circuits comprise revolution operation control circuit, flexible operation control circuit, luffing operation control circuit, master winch operation control circuit and secondary elevator operation control circuit, described the first hydraulic control handle (2) connects respectively and handles described revolution operation control circuit, flexible operation control circuit and secondary elevator operation control circuit, described the second hydraulic control handle (3) connects respectively and handles described luffing operation control circuit and master winch operation control circuit,
Wherein, it is upper that wherein both both share by this described handle oil feeding lines (V4) in described revolution operation control circuit, flexible operation control circuit and secondary elevator operation control circuit are connected to described the first hydraulic control handle (2), and described both shared handle oil feeding lines (V4) are provided with the 4th change-over valve (9) and connect to realize switching over.
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| CN105438995A (en) * | 2015-12-29 | 2016-03-30 | 中国一冶集团有限公司 | Device and method for prohibiting compound operation of crane |
| CN106315411A (en) * | 2016-10-27 | 2017-01-11 | 安徽柳工起重机有限公司 | Speed control system of automobile crane |
| CN106629396A (en) * | 2016-12-23 | 2017-05-10 | 徐州重型机械有限公司 | Electro-hydraulic union speed adjustment rotary system for crane and control method |
| CN106744330A (en) * | 2016-12-28 | 2017-05-31 | 徐州重型机械有限公司 | A kind of crane composite move control system |
| CN107605828A (en) * | 2017-08-25 | 2018-01-19 | 浙江志高机械股份有限公司 | The monolever hydraulic control operation system thereof of rig |
| CN109677842A (en) * | 2019-01-12 | 2019-04-26 | 上海波赫驱动系统有限公司 | A kind of drag conveyor double handle control valve |
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| CN105438995A (en) * | 2015-12-29 | 2016-03-30 | 中国一冶集团有限公司 | Device and method for prohibiting compound operation of crane |
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| CN106629396B (en) * | 2016-12-23 | 2018-05-18 | 徐州重型机械有限公司 | A kind of crane electro-hydraulic joint speed governing rotary system and control method |
| CN106744330A (en) * | 2016-12-28 | 2017-05-31 | 徐州重型机械有限公司 | A kind of crane composite move control system |
| CN106744330B (en) * | 2016-12-28 | 2018-06-26 | 徐州重型机械有限公司 | A kind of crane composite move control system |
| CN107605828A (en) * | 2017-08-25 | 2018-01-19 | 浙江志高机械股份有限公司 | The monolever hydraulic control operation system thereof of rig |
| CN107605828B (en) * | 2017-08-25 | 2024-05-10 | 浙江志高机械股份有限公司 | Single-handle hydraulic control operation system of drilling machine |
| CN109677842A (en) * | 2019-01-12 | 2019-04-26 | 上海波赫驱动系统有限公司 | A kind of drag conveyor double handle control valve |
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