CN105110192B - A kind of hydraulic crane collaborates control device - Google Patents
A kind of hydraulic crane collaborates control device Download PDFInfo
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- CN105110192B CN105110192B CN201510466090.8A CN201510466090A CN105110192B CN 105110192 B CN105110192 B CN 105110192B CN 201510466090 A CN201510466090 A CN 201510466090A CN 105110192 B CN105110192 B CN 105110192B
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Abstract
The present invention discloses a kind of hydraulic crane interflow control device, using guide's hydraulic control and the break-make and size at proportion magnetic valve pilot control two ways control both sides interflow, the break-make of converging device depends on pressure the higher person in hydraulic control guide's oil circuit and electric proportional control guide's oil circuit, and the size of left and right sides work joint flow depends on the consecutive variations of deflection angle or the pressure condition of system both sides of pilot handle；Two side systems, pressure flow demand are joined according to interflow, selection is turned left interflow from left to right or from the right side, is passed through and is controlled the displacement of converging valve core to reduce interflow impact when crane acts.Present invention reduces impact caused by crane hydraulic main valve merging process, merging process can be controlled, ensure that fine motion of the crane in elevator low discharge, ensures that merging process is steady；Using with by the way of automatically controlled interflow, enhancing the operating performance at interflow, meeting the requirement that engineering machinery hydraulic executing agency collaborates to hydraulic system under different operating modes.
Description
Technical field
The present invention relates to a kind of control device of hydraulic crane, specifically a kind of hydraulic crane interflow control device,
Belong to hydraulic crane control device technical field.
Background technology
Collaborate important component and critical control units of the control device as hydraulic crane, mainly consider during design
Factor have：When impact condition when the loss of the size, pressure of through-current capability, interflow are turned on and off, low discharge one action
Fine motion and action delay situation, and with through-current capability is big, the pressure loss is small, have when interflow is turned on and off compared with
Small impact, do not collaborate during low discharge one action to ensure fine motion, the interflow control device for the characteristics such as action is no-delay is most
Alright.
At present, in autocrane, main actions have master winch, secondary elevator, flexible, luffing and revolution, wherein, preceding four
Individual action is typically integrated on main valve (i.e. banked direction control valves), core component of the main valve as crane hydraulic control system, and it is determined
Master winch, secondary elevator, flexible and the efficiency of the human action of luffing four and the energy consumption level of complete machine.Existing crane master winch and
The control mode of secondary elevator is relatively more unified, is Dual-pump flow-converging, that is, same by the first oil pump and the second oil pump when performing an action
When give elevator fuel feeding, to improve the operating efficiency of executive component, and flexible and luffing is then concentrated mainly in two kinds of control modes.
And collaborate the design of control device for hydraulic crane, hydraulically-controlled type automatic merging mode typically is used both at home and abroad, and due to setting
Counting the reason such as lack of standardization can cause crane to collaborate impact when acting.
The content of the invention
In view of the above-mentioned problems of the prior art, the present invention provides a kind of hydraulic crane interflow control device, can
Reduce and impacted caused by crane hydraulic main valve merging process, merging process can be controlled, realize crane in elevator low discharge
When fine motion, reduce impact, ensure merging process it is steady.
To achieve these goals, a kind of hydraulic crane interflow control device that the present invention uses, the hydraulic crane
Collaborate control device using guide's hydraulic control and proportion magnetic valve pilot control two ways control both sides interflow break-make and
Size, the break-make of converging device depend on pressure the higher person in hydraulic control guide's oil circuit and electric proportional control guide's oil circuit, left and right two
The size of side work joint flow depends on the consecutive variations of deflection angle or the pressure condition of system both sides of pilot handle；Root
Join two side systems according to interflow, pressure flow demand, selection is turned left interflow from left to right or from the right side, by controlling converging valve core
Displacement reduces the interflow impact and the control of converging valve uninterrupted during crane action.
A kind of hydraulic crane interflow control device includes two position three way hydraulic controlled valve, two-position three-way proportional pressure-reducing valve, shuttle valve
And converging valve, the converging valve are the two-way converging valve in both sides；The oil inlet at shuttle valve both ends goes out with two position three way hydraulic controlled valve respectively
The oil-out connection of hydraulic fluid port, two-position three-way proportional pressure-reducing valve, the oil-out of shuttle valve are connected with converging valve；Two-position three-way proportional depressurizes
Valve provides pilot pressure by automatically controlled pilot pressure oil sources；Oil circuit is connected with executing agency at left and right sides of converging valve.Preferably, it is described
Converging valve is sliding valve structure.
Electric proportional control guide's oil circuit pressure depends on the control electric signal picked up by signal pickup assembly, signal acquisition dress
The consecutive variations signal of the deflection angle by gathering pilot handle is put, to control electric proportional control guide's oil circuit pressure continuously to control
System, the size of step-less adjustment guiding electric controlling pressure；Automatically controlled pilot pressure gathers pilot handle angle signal by sensor, passes through collection
Into amplifier, pilot control electric current is exported, realizes the continuous control of control pressure.Preferably, the signal pickup assembly is biography
Sensor.
Compared with prior art, the converging valve in the present invention has two-way interflow function, by using hydraulic control and automatically controlled two
Kind mode controls the mode at interflow, and two side systems can be joined according to interflow, pressure flow demand, are selected from left to right or past from the right side
Left interflow.By accurate continuous control, the displacement of converging valve core, collaborate impact when realizing and reducing crane action.By using
Automatically controlled mode, using solenoid-operated proportional pressure-reducing valve, integrated control unit is introduced, merging process can be efficiently controlled, realize crane
In elevator low discharge, fretting performance is good, and (pilot handle angular deflection signal is depended on) after flow increase to a certain extent,
Reduce impact and merging process is steady.In addition, by using the control mode with automatically controlled interflow, the operability at interflow is enhanced
Can, meet the requirement that engineering machinery hydraulic executing agency collaborates to hydraulic system under different operating modes.
Brief description of the drawings
Fig. 1 is executing agency's hydraulic principle schematic diagram of the present invention；
Fig. 2 is the control flow chart of the present invention；
Fig. 3 is the flow chart of solenoid valve control of the present invention.
In figure：1st, two position three way hydraulic controlled valve, 2, two-position three-way proportional pressure-reducing valve, 3, shuttle valve, 4, converging valve, 5, automatically controlled guide
Pressure oil-source, A, converging valve left side oil circuit, B, converging valve right side oil circuit, C, guide's hydraulic control oil circuit, D, converging valve working connection, E, elder generation
Pilot power oil circuit.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.
As shown in Figure 1 to Figure 3, a kind of hydraulic crane interflow control device, hydraulic crane interflow control device are adopted
With guide's hydraulic control and proportion magnetic valve pilot control two ways, the break-make and size at both sides interflow are accurately controlled, is closed
The break-make for flowing device depends on pressure the higher person in hydraulic control guide's oil circuit and electric proportional control guide's oil circuit, left and right sides work connection
The size of interflow amount depends on the consecutive variations of deflection angle or the pressure condition of system both sides of pilot handle；Joined according to interflow
Two side systems, pressure flow demand, selection is turned left interflow from left to right or from the right side, by controlling the displacement of converging valve core to reduce
Interflow impact and the control of converging valve uninterrupted when crane acts.
Above-mentioned hydraulic crane interflow control device may include two position three way hydraulic controlled valve 1, two-position three-way proportional pressure-reducing valve 2,
Shuttle valve 3 and converging valve 4, the converging valve 4 are the two-way converging valve in both sides；The oil inlet at the both ends of shuttle valve 3 respectively with two-position three way liquid
The oil-out connection of the oil-out, two-position three-way proportional pressure-reducing valve 2 of valve 1 is controlled, the oil-out of shuttle valve 3 is connected with converging valve 4；Two
Threeway proportional pressure-reducing valve 2 provides pilot pressure by automatically controlled pilot pressure oil sources 5；The left and right sides oil circuit of converging valve 4 and executing agency
It is connected.Wherein, the break-make of converging device may depend on elevated pressures (hydraulic control guide's oil circuit and the electric proportional control of the selection of shuttle valve 3
High person in guide's oil circuit), the pilot pressure of hydraulic control guide's oil circuit depends on the pressure of system both sides.
Electric proportional control guide's oil circuit pressure depends on the control electric signal picked up by signal pickup assembly, signal acquisition dress
The consecutive variations signal of the deflection angle by gathering pilot handle is put, to control electric proportional control guide's oil circuit pressure continuously to control
System, the size of step-less adjustment guiding electric controlling pressure；Automatically controlled pilot pressure gathers pilot handle angle signal by sensor, passes through collection
Into amplifier, pilot control electric current is exported, realizes the continuous control of control pressure.Wherein, integrated amplifier is to collection signal
Processing is (when deflection angle reaches setting value, export ratio control electric current), and proportional pressure-reducing valve is under leader current control, output
Proportion pilot hydraulic pressure signal, and then control converging valve core displacement.
Preferably, the signal pickup assembly can be sensor.Automatically controlled signal gathers pilot control hand by sensor
The declination signal of handle, export one stage signal electric current；One stage signal electric current is again through integrated amplifier output control two-position three-way proportional
The proportional current signal of pressure-reducing valve, proportional current signal controls the export ratio pressure signal of two-position three-way proportional pressure-reducing valve, real
The step-less adjustment of existing converging valve core, is accurately controlled converging valve uninterrupted；Meanwhile ratio change pressure signal, realizing reduces
Impacted caused by interflow, improve the stability of a system.
The converging valve 4 is sliding valve structure, determines both sides flow area by the displacement of valve element, controls the big of both sides flow
It is small.
From said structure, the converging valve in the present invention has two-way interflow function, by using hydraulic control and automatically controlled two
Kind mode controls the mode at interflow, and two side systems can be joined according to interflow, pressure flow demand, are selected from left to right or past from the right side
Left interflow.By accurate continuous control, the displacement of converging valve core, collaborate impact when realizing and reducing crane action.By using
Automatically controlled mode, using solenoid-operated proportional pressure-reducing valve, integrated control unit is introduced, merging process can be efficiently controlled, realize crane
In elevator low discharge, fretting performance is good, and (pilot handle angular deflection signal is depended on) after flow increase to a certain extent,
Reduce impact and merging process is steady.In addition, by using the control mode with automatically controlled interflow, the operability at interflow is enhanced
Can, meet the requirement that engineering machinery hydraulic executing agency collaborates to hydraulic system under different operating modes.
Claims (4)
1. a kind of hydraulic crane collaborates control device, it is characterised in that hydraulic crane interflow control device uses first drain
The break-make and size at voltage-controlled system and proportion magnetic valve pilot control two ways control both sides interflow, the break-make of converging device depend on
Pressure the higher person in hydraulic control guide's oil circuit and electric proportional control guide's oil circuit, the size of left and right sides work joint flow depend on
In the consecutive variations of the deflection angle of pilot handle or the pressure condition of system both sides；Two side systems, pressure current are joined according to interflow
Amount demand, selection are turned left interflow from left to right or from the right side, when reducing crane action by controlling the displacement of converging valve core
Interflow impact and the control of converging valve uninterrupted；
Hydraulic crane interflow control device includes two position three way hydraulic controlled valve (1), two-position three-way proportional pressure-reducing valve (2), shuttle valve (3)
With converging valve (4), the converging valve (4) is the two-way converging valve in both sides；The oil inlet at shuttle valve (3) both ends respectively with two-position three way liquid
Control the oil-out connection of the oil-out, two-position three-way proportional pressure-reducing valve (2) of valve (1), oil-out and the converging valve (4) of shuttle valve (3)
Connection；Two-position three-way proportional pressure-reducing valve (2) provides pilot pressure by automatically controlled pilot pressure oil sources (5)；At left and right sides of converging valve (4)
Oil circuit is connected with executing agency.
A kind of 2. hydraulic crane interflow control device according to claim 1, it is characterised in that the converging valve (4)
For sliding valve structure.
A kind of 3. hydraulic crane interflow control device according to claim 1, it is characterised in that electric proportional control guide
Oil circuit pressure depends on the control electric signal picked up by signal pickup assembly, and signal pickup assembly is by gathering the inclined of pilot handle
The consecutive variations signal of gyration, to control electric proportional control guide's oil circuit pressure continuous control, step-less adjustment guiding electric controlling pressure
The size of power；Automatically controlled pilot pressure gathers pilot handle angle signal by sensor, by integrated amplifier, exports pilot control
Electric current, realize the continuous control of control pressure.
A kind of 4. hydraulic crane interflow control device according to claim 3, it is characterised in that the signal acquisition dress
It is set to sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510466090.8A CN105110192B (en) | 2015-07-31 | 2015-07-31 | A kind of hydraulic crane collaborates control device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510466090.8A CN105110192B (en) | 2015-07-31 | 2015-07-31 | A kind of hydraulic crane collaborates control device |
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| CN105110192A CN105110192A (en) | 2015-12-02 |
| CN105110192B true CN105110192B (en) | 2018-03-20 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465088B (en) * | 2015-12-22 | 2017-10-31 | 徐州徐工液压件有限公司 | A kind of banked direction control valves does not collaborate automatic adaptive device |
| CN107859665A (en) * | 2017-11-24 | 2018-03-30 | 张宏伟 | A kind of fluid control pressure valve group |
| CN113090599B (en) * | 2021-03-31 | 2022-07-05 | 徐工集团工程机械股份有限公司科技分公司 | Logic control valve and hydraulic system |
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| CN104806588A (en) * | 2015-04-01 | 2015-07-29 | 广西柳工机械股份有限公司 | Two-pump confluence hydraulic control system |
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|---|---|---|---|---|
| JPH09217702A (en) * | 1996-02-15 | 1997-08-19 | Yutani Heavy Ind Ltd | Control device of hydraulic shovel |
| CN101718286A (en) * | 2009-12-07 | 2010-06-02 | 江苏柳工机械有限公司 | Flow collecting valve |
| CN102312451A (en) * | 2010-06-30 | 2012-01-11 | 北汽福田汽车股份有限公司 | Excavator converging control system and excavator thereof |
| CN202251198U (en) * | 2011-10-20 | 2012-05-30 | 常德中联重科液压有限公司 | Hydraulic shunting and converging control device |
| CN202577398U (en) * | 2012-05-04 | 2012-12-05 | 福田雷沃国际重工股份有限公司 | Swing arm descending energy-saving system of negative flow control of excvavtor |
| CN202833434U (en) * | 2012-09-24 | 2013-03-27 | 三一重工股份有限公司 | Hydraulic system and engineering machinery |
| CN202789789U (en) * | 2012-09-27 | 2013-03-13 | 福田雷沃国际重工股份有限公司 | Anti-shake hydraulic system of rotary drilling rig |
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