CN108252969A - Transporting equipment and its hydraulic system - Google Patents

Transporting equipment and its hydraulic system Download PDF

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Publication number
CN108252969A
CN108252969A CN201711415957.2A CN201711415957A CN108252969A CN 108252969 A CN108252969 A CN 108252969A CN 201711415957 A CN201711415957 A CN 201711415957A CN 108252969 A CN108252969 A CN 108252969A
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China
Prior art keywords
supporting leg
hydraulic
valve module
pieces
valve
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Granted
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CN201711415957.2A
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CN108252969B (en
Inventor
仝进科
宋帅
米勇
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Taiyuan Heavy Industry Co Ltd
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Taiyuan Heavy Industry Co Ltd
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/17Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/22Synchronisation of the movement of two or more servomotors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02Fluid distribution or supply devices characterised by their adaptation to the control of servomotors

Abstract

The present invention provides a kind of transporting equipment and its hydraulic systems.The hydraulic system includes M*N movement executing mechanism of the N kinds movement of each supporting leg in M supporting leg of driving transporting equipment, switches valve module, M piece ratio valve modules corresponding with M supporting leg with M*N pieces that M*N movement executing mechanism is respectively communicated with and controls each ratio valve module and each controller for switching valve module.For each supporting leg in M supporting leg, the outlet that M*N pieces switch N pieces switching valve module in valve module connects respectively with N number of movement executing mechanism of the supporting leg, the outlet of entrance ratio valve module corresponding with the supporting leg.M piece ratio valve modules are in parallel between media drive end and medium return terminal.The transporting equipment includes above-mentioned hydraulic system.The hydraulic system that the transporting equipment of N kinds movement can be made by having each supporting leg of M supporting leg includes M pieces proportioning valve and M*N piece switching valves, and cost is more much lower including M*N piece proportioning valves than existing hydraulic system.

Description

Transporting equipment and its hydraulic system
Technical field
The present invention relates to hydraulic control system more particularly to a kind of transporting equipment and its hydraulic systems.
Background technology
Have a kind of pipeline transportation device include 4 supporting legs and 4 supporting leg lifting bodies, 4 supporting leg exposure mechanisms, 4 sets Vertical lifting mechanism, 4 sets of horizontal extension mechanisms.All mechanism actions are all realized by two-way cylinder, and need electrodeless tune Speed.The horizontal extension mechanism of 4 supporting legs respectively includes horizontal support legs oil cylinder 111,121,131 and 141, the vertical liter of 4 supporting legs Descending mechanism respectively includes vertical support oil cylinder 112,122,132 and 142, and the supporting leg lifting body of 4 supporting legs respectively includes jacking Oil cylinder 113,123,133 and 143, the supporting leg exposure mechanism of 4 supporting legs respectively include ejection cylinder 114,124,134 and 144.Often 4 oil cylinders of kind mechanism need synchronization action, and linkage action is not present between different institutions.
Realize the action of the motion of more than pipeline transportation device, common hydraulic system is each oil cylinder configuration one A proportional multi-way valve, generally requires four sets of proportional multi-way valves 101,102,103 and 104 of setting, often covers proportional multi-way valve and includes four Group needs 16 groups of proportional multi-way valves, as shown in Figure 1 altogether.The pulse that proportional multi-way valve is generally fed back by the band of programmable controller Width modulated (PWM:Pulse Width Modulation) output point controlled, and one group of proportional multi-way valve is fed back by two bands PWM output controlled.Need 32 PWM output points with feedback in total in above system.At present using more ripe TTC200 programmable controllers include 8 with feedback PWM output points, 4 without feedback PWM output points, 19 DO output points, institute The hydraulic system to be controlled to need to set 4 TTC200 programmable controllers, many DO output points are wasted so that programmable Controller cannot make the best use of everything.As it can be seen that not only cost is higher for the hydraulic system of existing transporting equipment, but also controller can be made Programming is complicated.
Invention content
The technical problem to be solved in the present invention is to provide a kind of quantity for reducing proportioning valve and the fortune of the quantity of controller Transfer device and its hydraulic system.
In order to solve the above-mentioned technical problem, the invention discloses following technical solutions:
It is proposed a kind of hydraulic system.The N kinds fortune of each supporting leg in M supporting leg of the hydraulic system including driving transporting equipment Dynamic M*N movement executing mechanism, the M*N pieces switching valve module being respectively communicated with the M*N movement executing mechanism, with it is described The corresponding M pieces ratio valve module of M supporting leg and each first output terminal are electrically connected respectively with each ratio valve module Connect and each second output terminal respectively with the described each controller that is electrically connected of switching valve module,
For each supporting leg in the M supporting leg, the outlet of N pieces switching valve module in the M*N pieces switching valve module It is connected respectively with N number of movement executing mechanism of the supporting leg, the outlet of entrance ratio valve module corresponding with the supporting leg connects Logical, the M pieces ratio valve module is in parallel between media drive end and medium return terminal,
Wherein, M is the positive integer more than 2, and N is the positive integer more than or equal to 1.
For above-mentioned hydraulic system, the M pieces ratio valve module forms modular ratio valve group.
For above-mentioned hydraulic system, the M*N pieces switching valve module forms modular switching valve group.
For above-mentioned hydraulic system, the N movement executing mechanisms of each supporting leg respectively include oil cylinder, and the media drive end is Hydraulic pump, the medium return terminal are oil revolving end;
Alternatively, N number of movement executing mechanism of each supporting leg respectively includes cylinder, the media drive end is pulsometer, institute Matter return terminal is given an account of as air return end.
For above-mentioned hydraulic system, M of the M pieces ratio valve module positive electromagnet M with the controller respectively A first output terminal electrical connection, M negative sense electromagnet of the M pieces ratio valve module are a with the other M of the controller respectively First output terminal is electrically connected.
For above-mentioned hydraulic system, the movement executing mechanism includes two-way cylinder, the switching valve module (22) Two outlets and the two entrances of the two-way cylinder are respectively communicated with, the two entrances and the ratio of the switching valve module Positive and negative two outlets of valve module are respectively communicated with.
For above-mentioned hydraulic system, the switching valve in the switching valve module uses two position four-way solenoid valves.
For above-mentioned hydraulic system, two position four-way solenoid valve is the form that normal off is opened, when two four-way electromagnetics Two oil circuits are respectively communicated with when electromagnet in valve obtains electric.
For above-mentioned hydraulic system, the proportioning valve in the ratio valve module uses the proportional multi-way valve unrelated with load.
Also propose a kind of transporting equipment.The transporting equipment includes M supporting leg, further includes above-mentioned hydraulic system.
1st, the hydraulic system that the transporting equipment of N kinds movement can be made by having each supporting leg of M supporting leg includes M pieces proportioning valve and M* N piece switching valves, cost are more much lower including M*N piece proportioning valves than existing hydraulic system.
2nd, the quantity of the controller of the hydraulic system is also accordingly reduced, has saved automatically controlled cost, but also make control The programming of device is easy, reduces trouble point.
3rd, proportioning valve and switching valve all modularizations can be facilitated and carry out various combinations, it can be achieved that individually by the hydraulic system Action, composite move.
4th, valve group is designed as a valve block by the hydraulic system, is reduced the connection of pipeline between traditional mode valve group, is subtracted Few leakage point.
Description of the drawings
Attached drawing described herein is used for providing further understanding the embodiment of the present invention, forms the embodiment of the present invention A part is intended only as example and is used for explaining the embodiment of the present invention, do not form the improper restriction to the embodiment of the present invention.Attached In figure:
Fig. 1 is the hydraulic system of a kind of existing transporting equipment that example provides;
Fig. 2 is the structure diagram of the hydraulic system of transporting equipment provided by one embodiment of the present invention.
Specific embodiment
Purpose, technical scheme and advantage to make the embodiment of the present invention are clearer, below in conjunction with the embodiment of the present invention And technical solution of the present invention is clearly and completely described in corresponding attached drawing.Obviously, described embodiment is only the present invention Part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not having All other embodiments obtained under the premise of creative work are made, shall fall within the protection scope of the present invention.
The (if present)s such as term " first ", " second " in specification and claims and above-mentioned attached drawing are for area Not similar part describes specific sequence or precedence without being used for.It should be appreciated that the data used in this way are appropriate In the case of can be interchanged, so that embodiments herein described herein can be real with the sequence other than illustrating herein It applies.
Fig. 2 is the structure diagram of the hydraulic system of transporting equipment provided by one embodiment of the present invention.As shown in Fig. 2, The hydraulic system that the embodiment provides includes M*N movement executing mechanism of the N kinds movement of M supporting leg of driving transporting equipment 21st, switch valve module 22, M pieces ratio corresponding with M supporting leg with the M*N pieces that M*N movement executing mechanism 21 is respectively communicated with Example valve module 23 and each first output terminal are electrically connected respectively with each ratio valve module 23 and each second output terminal point The controller (not shown) not being electrically connected with each switching valve module 22.For each supporting leg in M supporting leg, M*N pieces The outlet of N pieces switching valve module 22 in switching valve module 22 connects respectively with N number of movement executing mechanism 21 of the supporting leg, entrance The outlet of ratio valve module 23 corresponding with the supporting leg.M piece ratios valve module 23 returns at media drive end 24 and medium It returns in parallel between holding 25.Wherein, M is the positive integer more than 1, and N is the positive integer more than or equal to 1.Wherein, switch valve module 22 In switching valve two position four-way solenoid valves may be used.Proportioning valve in ratio valve module 23 is, for example, proportional multi-way valve.Control Device is, for example, programmable controller.
M piece ratios valve module 23 can form modular ratio valve group.M*N pieces switching valve module 22 can form module The switching valve group of change.Modular total valve group can be collectively formed in modular ratio valve group and modular switching valve group.
Wherein, N number of movement executing mechanism 21 of each supporting leg respectively includes oil cylinder, and media drive end 24 is hydraulic pump, is situated between Matter return terminal 25 is oil revolving end.Alternatively, N number of movement executing mechanism 21 of each supporting leg respectively includes cylinder, media drive end 24 For pulsometer, medium return terminal 25 is air return end.
The transporting equipment of the embodiment includes above-mentioned hydraulic system.
Specifically, by taking M=4 and N=4 as an example, transporting equipment includes 4 supporting legs, and each supporting leg includes 4 Motor executions Mechanism can be respectively horizontal stretching motion executing agency, vertical displacement movement executing agency, supporting leg jacking Motor execution machine Structure and supporting leg stretch out movement executing mechanism.The movement executing mechanism 21 of each supporting leg includes 1 double acting in 4 supporting legs Oil cylinder, therefore each supporting leg includes 1 horizontal support legs oil cylinder, 1 vertical support oil cylinder, 1 jacking cylinder and 1 release oil Cylinder.The hydraulic system of the embodiment includes 4 horizontal support legs oil cylinders, 2111,2121,2131 and 2141,4 vertical support oil cylinders 2112nd, 2122,2132 and 2142,4 jacking cylinders, 2113,2123,2133 and 2143,4 ejection cylinders 2114,2124, 2134 and 2144, altogether including 16 oil cylinders.Wherein, belonging to 4 oil cylinders of same movement needs synchronization action, fortune not of the same race Synchronization action is not needed between dynamic oil cylinder.
Two outlets of the two entrances and 1 two position four-way solenoid valve module of each two-way cylinder are respectively communicated with.Cause Include 4 two-way cylinders for each supporting leg, thus 4 two-way cylinders of each supporting leg respectively with 4 two four-way electromagnetics Valve module connects, and 4 two position four-way solenoid valve modules of each supporting leg are 1 set of two position four-way solenoid valve module.The embodiment Transporting equipment includes 4 supporting legs, so the hydraulic system of the embodiment, which has altogether, includes 4 set of two position four-way solenoid valve module, first Cover two position four-way solenoid valve modules include 4 two position four-way solenoid valve modules 2211,2212,2213 and 2214, second set two Four-way electromagnetic valve module includes 4 two position four-way solenoid valve modules 2221,2222,2223 and 2224, second set two four energizations Magnet valve module includes 4 two position four-way solenoid valve modules 2231,2232,2233 and 2234, second set of two position four-way solenoid valve mould Block includes 4 two position four-way solenoid valve modules 2241,2242,2243 and 2244, altogether 16 two position four-way solenoid valve module shapes Into modular switching valve group.Two position four-way solenoid valve moulds, two position four-way solenoid valve in the block is the form that normal off is opened, when two Two oil circuits are respectively communicated with when electromagnet in four way solenoid valve obtains electric.
The two entrances proportional multi-way valve mould corresponding with the supporting leg of 4 two position four-way solenoid valve modules of each supporting leg Positive and negative two outlets of block are respectively communicated with, i.e., the outlet of every proportional multi-path valve module connects a set of two position four-way solenoid valves mould Block.4 proportional multi-path valve modules 231,232,233 and 234 corresponding with 4 supporting legs are in parallel to form modularization proportional multi-way valve Group.The P mouths of modular proportional multi-path valve group are connected with hydraulic pump, the R mouth oil returns of modular proportional multi-path valve group.Wherein, Proportional multi-way valve in proportional multi-path valve group module is, for example, the proportional multi-way valve unrelated with load.
Electromagnet of 16 second output terminals of controller respectively with 16 switching valve modules is electrically connected.Respectively with 4 branch 4 horizontal support legs oil cylinders 2111,2121,2131 of leg with 2141 connect 4 two position four-way solenoid valve modules 2211,2221, 2231 and 2241 electromagnet Y101, Y201, Y301 and Y401 connects 4 second output terminals of programmable controller respectively, point The 4 two position four-way solenoid valve modules not connected with 4 vertical support oil cylinders 2112,2122,2132 and 2142 of 4 supporting legs 2212nd, 2222,2232 and 2242 electromagnet Y102, Y202, Y302 and Y402 connects 4 second of programmable controller respectively Output terminal, 4 two position four-way solenoid valves connected respectively with 4 jacking cylinders 2113,2123,2133 and 2143 of 4 supporting legs Electromagnet Y103, Y203, Y303, Y403 of module 2213,2223,2233 and 2243 connect 4 of programmable controller respectively Second output terminal, 4 two four energizations connected respectively with 4 ejection cylinders 2114,2124,2134 and 2144 of 4 supporting legs Electromagnet Y104, Y204, Y304 and Y404 of magnet valve module 2214,2224,2234 and 2244 connect programmable controller respectively 4 second output terminals.
In 8 the first output terminals of controller 4 the first output terminals respectively with 4 proportional multi-path valve modules 231,232, 4 of 233 and 234 positive electromagnet Y001a, Y002a, Y003a and Y004a electrical connections, in addition 4 the first output terminals respectively with 4 negative sense electromagnet Y001b, Y002b, Y003b and Y004b of 4 proportional multi-path valve modules 231,232,233 and 234 are electrically connected It connects.
Wherein, TTC200 programmable controllers may be used in controller, in this case, second output terminal TTC200 The DO output terminals of programmable controller, the first output terminal are the PWM output terminals of TTC200 programmable controllers.
The operation principle of the hydraulic system of above-described embodiment is as follows:
When the horizontal support legs oil cylinder 2111,2121,2131 and 2141 of 4 supporting legs is needed to act, controller conveys 4 simultaneously 4 two-way four-way valve modules 2211 that 4 horizontal support legs oil cylinders 2111,2121,2131 and 2141 of a supporting leg are respectively communicated with, 2221st, 2231 and 2241 electromagnet Y101, Y201, Y301 and Y401 is obtained electric, at this point, 4 proportional multi-path valve modules 231, 232nd, it 233 and 234 is connected respectively with 4 horizontal support legs oil cylinders 2111,2121,2131 and 2141.At this point, pass through controller 4 A output terminal control 4 proportional multi-path valve modules 231,232,233 and 234 positive electromagnet Y001a, Y002a, Y003a and Y004a can make 4 horizontal support legs oil cylinders 2111,2121,2131 and 2141 while stretch out, and pass through this 4 outputs of controller End adjusts positive electromagnet Y001a, Y002a, Y003a and Y004a's of 4 proportional multi-path valve modules 231,232,233 and 234 Size of current carrys out the stretching speed of control cylinder.Similarly, 4 proportional multi-way valves are controlled by other 4 output terminals of controller Negative sense electromagnet Y001b, Y002b, Y003b and Y004b of module 231,232,233 and 234 can make 4 horizontal support legs oil cylinders 2111st, it 2121,2131 and 2141 retracts simultaneously, and this 4 output terminals for passing through controller adjust 4 proportional multi-path valve modules 231st, the size of current of 232,233 and 234 Y001b, Y002b, Y003b and Y004b carry out the retraction speed of control cylinder.
When needing to act 4 vertical support oil cylinder 2112,2122,2132 and 2142, need to first convey 4 supporting legs 4 are hung down 4 two-way four-way valve modules 2212,2222,2232 and 2242 that straight support oil cylinder 2112,2122,2132 and 2142 is respectively communicated with Electromagnet Y102, Y202, Y302 and Y402 obtain it is electric, at this point, 4 proportional multi-path valve modules 231,232,233 and 234 respectively with 4 vertical support oil cylinders 2112,2122,2132 are connected with 2142.At this point, 4 output terminals by controller control 4 ratios Positive electromagnet Y001a, Y002a, Y003a and Y004a of multichannel valve module 231,232,233 and 234 can make 4 vertical branch Leg oil cylinder 2112,2122,2132 and 2142 stretches out simultaneously, and this 4 output terminals for passing through controller adjust 4 proportional multi-way valves The size of current of positive electromagnet Y001a, Y002a, Y003a and Y004a of module 231,232,233 and 234 carry out control cylinder Stretching speed.Similarly, 4 231,232,233 and of proportional multi-path valve module are controlled by other 4 output terminals of controller 234 negative sense electromagnet Y001b, Y002b, Y003b and Y004b can make 4 2112,2122,2132 and of vertical support oil cylinder 2142 retract simultaneously, and pass through this 4 output terminals 4 proportional multi-path valve modules 231,232,233 and 234 of adjusting of controller The size of current of negative sense electromagnet Y001b, Y002b, Y003b and Y004b carry out the retraction speed of control cylinder.
When the jacking cylinder 2113,2123,2133 and 2143 of 4 supporting legs is needed to act, controller conveys 4 branch simultaneously 4 two-way four-way valve modules 2213,2223,2233 that 4 jacking cylinders 2113,2123,2133 and 2143 of leg are respectively communicated with With 2243 electromagnet Y103, Y203, Y303, Y403 obtain it is electric, at this point, 4 proportional multi-path valve modules 231,232,233 and 234 It is connected respectively with 4 jacking cylinders 2113,2123,2133 and 2143.At this point, control 4 ratios by 4 output terminals of controller Positive electromagnet Y001a, Y002a, Y003a and Y004a of example multichannel valve module 231,232,233 and 234 can make 4 jackings Oil cylinder 2113,2123,2133 and 2143 stretches out simultaneously, and this 4 output terminals for passing through controller adjust 4 proportional multi-way valve moulds The size of current of positive electromagnet Y001a, Y002a, Y003a and Y004a of block 231,232,233 and 234 carry out control cylinder Stretch out speed.Similarly, 4 proportional multi-path valve modules 231,232,233 and 234 are controlled by other 4 output terminals of controller Negative sense electromagnet Y001b, Y002b, Y003b and Y004b can make 4 jacking cylinders 2113,2123,2133 and 2143 simultaneously It retracts, and this 4 output terminals for passing through controller adjust the negative sense electromagnetism of 4 proportional multi-path valve modules 231,232,233 and 234 The size of current of iron Y001b, Y002b, Y003b, Y004b carry out the retraction speed of control cylinder.
When the ejection cylinder 2114,2124,2134 and 2144 of 4 supporting legs is needed to act, controller conveys 4 branch simultaneously 4 two-way four-way valve modules 2214,2224,2234 that 4 ejection cylinders 2114,2124,2134 and 2144 of leg are respectively communicated with With 2244 electromagnet Y101, Y201, Y301 and Y401 obtain it is electric, at this point, 4 proportional multi-path valve modules 231,232,233 and 234 It is connected respectively with 4 ejection cylinders 2114,2124,2134 and 2144.At this point, control 4 ratios by 4 output terminals of controller Positive electromagnet Y001a, Y002a, Y003a and Y004a of example multichannel valve module 231,232,233 and 234 can make 4 releases Oil cylinder 2114,2124,2134 and 2144 stretches out simultaneously, and this 4 output terminals for passing through controller adjust proportional multi-path valve module 231st, the size of current of 232,233 and 234 positive electromagnet Y001a, Y002a, Y003a, Y004a carry out the stretching of control cylinder Speed.Similarly, pass through the negative of other 4 output terminals of controller 4 proportional multi-path valve modules 231,232,233 and 234 of control It can make 4 ejection cylinders 2114,2124,2134 and 2144 to electromagnet Y001b, Y002b, Y003b, Y004b while retract, And this 4 output terminals for passing through controller adjust the negative sense electromagnet of 4 proportional multi-path valve modules 231,232,233 and 234 The size of current of Y001b, Y002b, Y003b, Y004b carry out the retraction speed of control cylinder.
The advantages of hydraulic system of above-described embodiment, is as follows:
1st, the hydraulic system that the transporting equipment of 4 kinds of actions can be made by having 4 each supporting legs of supporting leg includes 4 proportioning valves and 16 Two position four-way solenoid valve of piece, cost are more much lower including 16 proportional multi-way valves than existing hydraulic system.
2nd, the hydraulic system is controlled, controller is needed to have 8 PWM outputs and 16 DO to export, one TTC200 programmable controllers are just enough, saved automatically controlled cost.
3rd, a programmable controller is only used so that controller programming is easy, and reduces trouble point.
4th, proportioning valve and switching valve all modularizations can be facilitated and carry out various combinations, it can be achieved that individually by the hydraulic system Action, composite move.
5th, valve group is designed as a valve block by the hydraulic system, reduces the connection of pipeline between traditional mode valve group, Reduce leakage point.
Finally it should be noted that:The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations;Although The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that:It still may be used To modify to the technical solution recorded in foregoing embodiments or carry out equivalent replacement to which part technical characteristic; And these modification or replace, various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution spirit and Range.

Claims (10)

  1. A kind of 1. hydraulic system, which is characterized in that the N kinds movement of each supporting leg in the M supporting leg including driving transporting equipment M*N movement executing mechanism (21), the M*N pieces switching valve module being respectively communicated with the M*N movement executing mechanism (21) (22), M pieces ratio valve module (23) corresponding with the M supporting leg and each first output terminal respectively with it is described each Piece ratio valve module (23) is electrically connected and each second output terminal switches what valve module (22) was electrically connected with described each respectively Controller,
    For each supporting leg in the M supporting leg, N pieces switching valve module (22) in the M*N pieces switching valve module (22) Outlet connects respectively with N number of movement executing mechanism of the supporting leg (21), entrance ratio valve module corresponding with the supporting leg (23) outlet, the M pieces ratio valve module (23) is in parallel between media drive end (24) and medium return terminal (25),
    Wherein, M is the positive integer more than 2, and N is the positive integer more than or equal to 1.
  2. 2. hydraulic system according to claim 1, which is characterized in that the M pieces ratio valve module (23) forms modularization Ratio valve group.
  3. 3. hydraulic system according to claim 1 or 2, which is characterized in that the M*N pieces switching valve module (22) forms mould The switching valve group of block.
  4. 4. hydraulic system according to claim 1, which is characterized in that the N movement executing mechanisms (21) of each supporting leg are respectively Including oil cylinder, the media drive end is hydraulic pump, and the medium return terminal is oil revolving end;
    Alternatively, N number of movement executing mechanism (21) of each supporting leg respectively includes cylinder, the media drive end is pulsometer, institute Matter return terminal is given an account of as air return end.
  5. 5. hydraulic system according to claim 1, which is characterized in that the positive electricity of M of the M pieces ratio valve module (23) Magnet is electrically connected respectively with the M of the controller the first output terminals, M negative sense electromagnetism of the M pieces ratio valve module (23) Iron is electrically connected respectively with the other M of the controller the first output terminals.
  6. 6. hydraulic system according to claim 5, which is characterized in that the movement executing mechanism (21) includes double acting oil Cylinder, two outlets of the switching valve module (22) and the two entrances of the two-way cylinder are respectively communicated with, the switching valve Positive and negative two outlets of the two entrances of module (22) and the ratio valve module (23) are respectively communicated with.
  7. 7. the hydraulic system according to claim 1 or 6, which is characterized in that the switching valve in the switching valve module (22) Using two position four-way solenoid valves.
  8. 8. hydraulic system according to claim 7, which is characterized in that two position four-way solenoid valve is the shape that normal off is opened Formula, two oil circuits are respectively communicated with when the electromagnet in two position four-way solenoid valve obtains electric.
  9. 9. hydraulic system according to claim 1, which is characterized in that the proportioning valve in the ratio valve module (23) uses The proportional multi-way valve unrelated with load.
  10. 10. a kind of transporting equipment, including M supporting leg, which is characterized in that the transporting equipment includes any of the above-described claim The hydraulic system.
CN201711415957.2A 2017-12-25 2017-12-25 Transportation equipment and hydraulic system thereof Active CN108252969B (en)

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CN205207302U (en) * 2015-10-30 2016-05-04 长安大学 Adjusting device is assisted to hydraulic leg
CN106246621A (en) * 2016-08-19 2016-12-21 常德中联重科液压有限公司 Hydraulic circuit and engineering machinery for engineering machinery
CN206600313U (en) * 2017-01-21 2017-10-31 三一汽车制造有限公司 Support leg hydraulic system, anchoring car and engineering machinery

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN102996553A (en) * 2012-11-27 2013-03-27 三一重工股份有限公司 Support leg hydraulic system and engineering machinery
US20140151501A1 (en) * 2012-12-04 2014-06-05 Sumitomo Precision Products Co., Ltd. Electro hydrostatic actuator system for retracting/extending landing gear
CN205207302U (en) * 2015-10-30 2016-05-04 长安大学 Adjusting device is assisted to hydraulic leg
CN106246621A (en) * 2016-08-19 2016-12-21 常德中联重科液压有限公司 Hydraulic circuit and engineering machinery for engineering machinery
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