CN102943496B - Potential energy recycling system of movable arm of excavator - Google Patents
Potential energy recycling system of movable arm of excavator Download PDFInfo
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- CN102943496B CN102943496B CN201210508867.9A CN201210508867A CN102943496B CN 102943496 B CN102943496 B CN 102943496B CN 201210508867 A CN201210508867 A CN 201210508867A CN 102943496 B CN102943496 B CN 102943496B
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- 238000005381 potential energy Methods 0.000 title claims abstract description 39
- 238000004064 recycling Methods 0.000 title abstract description 9
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 32
- 125000004122 cyclic group Chemical group 0.000 claims description 26
- 239000012530 fluid Substances 0.000 claims description 20
- 238000005259 measurement Methods 0.000 claims description 10
- 239000003921 oil Substances 0.000 abstract description 15
- 230000009467 reduction Effects 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 9
- 239000007788 liquid Substances 0.000 description 9
- 238000011084 recovery Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 206010044565 Tremor Diseases 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
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Abstract
The invention discloses a potential energy recycling system of a movable arm of an excavator. The potential energy recycling system of the movable arm of the excavator comprises a rotary platform, a working device, a balancer and a hydraulic oil tank, wherein the working device is articulated with the rotary platform; and the balancer is arranged on the rotary platform. The potential energy recycling system of the movable arm of the excavator is characterized in that a first plunger oil cylinder set is connected between the working device and the rotary platform; the balancer comprises at least one movable balancing block moving in the vertical direction; a second plunger oil cylinder set for jacking the at least one movable balancing block is connected between the at least one movable balancing block and the rotary platform; and the first plunger oil cylinder set, the second plunger oil cylinder set and the hydraulic oil tank are connected with a control valve set through connecting pipelines. The potential energy recycling system of the movable arm of the excavator provided by the invention has the advantages of simple structure, low cost, reliability, small impact, capability of improving the controllability of a mechanical arm, and oil conservation and consumption reduction.
Description
Technical field
The present invention relates to a kind of gravitional force recovery system, relate to a kind of excavator swing arm potential energy cyclic utilization system specifically.
Background technology
The hydraulic working machines such as hydraulic crawler excavator, hydraulic pressure landing machine, hydraulic crane are the capital equipments in engineering machinery, for hydraulic crawler excavator, hydraulic crawler excavator is as one Construction Operating Machinery fast and efficiently, it is one of main mechanical in restoration in earth-rock construction engineering, be called in the industry " king of engineering machinery ", it is widely used in the mechanized construction of the industry such as industry and civilian construction, communications and transportation, hydraulic and electric engineering engineering, farmland improvement, mine excavation and modernization military engineering.
Current hydraulic crawler excavator generally adopts diesel engine as power, its fuel diesel used is non-renewable resources, and excavator quantity is many, fuel consume is large, in today that energy worsening shortages, oil price constantly rise, to the requirement of the low oil consumption of excavator also in continuous raising.Simultaneously along with global warming, love earth environment, the hydraulic crawler excavator product of research and development energy-saving and emission-reduction is a kind of trend, and a lot of digging machine manufacturer has dropped into a large amount of man power and material.
Hydraulic crawler excavator is as a kind of machinery of circulation digging operation, frequently need lift and fall swing arm and left and right revolution upper fuselage, because these quality Great inertia own are large, need to consume a large amount of engine power, and this part energy is not used to do Effective power, but wasted, but also causing heating, impact etc., capacity usage ratio is low.The excavator of existing hybrid power has carried out exploring attempting in this respect at present, but technical sophistication, reliability is low.And except hydraulic crawler excavator, all there is its mechanical arm and be frequently elevated consumption of engine energy, the shortcoming that energy consumption is high in hydraulic pressure landing machine, hydraulic crane etc.
By retrieval, we retrieve following discloses document in hydraulic energy recovery system field, but all there is certain shortcoming, such as:
1. Chinese patent, application number: CN200780025266, patent name: hydraulic energy recovery system, summary: this system comprises: at least one hydraulic motor; Two main pipelines, as service or the discharge line of at least one hydraulic motor described; Low pressure liquid source; And high pressure accumulator, form high pressure liquid source.This system can be run under energy recuperation mode and fault offset pattern, and at energy recuperation mode, supply main pipeline is connected to low pressure liquid source, discharges main pipeline and is connected to high pressure accumulator, contrary in fault offset pattern connected mode.Low pressure liquid source comprises high flow rate booster pump and adjustable pressure restrictor, and under energy recuperation mode, when motor runs with maximum (top) speed, booster pump can transmit enough liquid stream, so that liquid is supplied at least one hydraulic motor; The fluid pressure in exit, low pressure liquid source can be changed by controlled pressure limiter.This hydraulic energy recovery system is mainly used as the engine energy-saving of vehicle, but cannot be used as on the energy regenerating of big machinery.
2. Chinese patent, application number: CN87202038, patent name: piston Hydraulic Energy Recovering Machine, summary: a kind of piston Hydraulic Energy Recovering Machine, the medium-small flow being specially adapted to recycle, the recoverable occasion of liquid excess pressure of high pressure.Energy-recovering machine is made up of fluid power part and power section, the fluid power part of this machine, primarily of compositions such as cylinder body, piston, plunger rod, liquid feed valve, tapping valve, Forced Valve, pump and motor are combined into an entirety, pump end and engine end rely on Forced Valve co-ordination, the not enough energy of pump end, is directly supplemented by a motor.This piston Hydraulic Energy Recovering Machine is mainly used as make-up pump end energy use, cannot be used as the mechanical arm energy regenerating in big machinery.
Summary of the invention
The object of this invention is to provide a kind of excavator swing arm potential energy cyclic utilization system, the potential energy that descending movable arm of excavator sends is stored, used in the process that excavator swing arm is lifted, improve excavator capacity usage ratio to reach, save the effect of energy consumption.
The solution of the present invention is by realizing like this: construct a kind of excavator swing arm potential energy cyclic utilization system, comprise revolving dial and equipment, be arranged on the counterweight on revolving dial and hydraulic oil container, equipment comprises the swing arm hinged with revolving dial, the first plunger cylinder group is connected with in the middle part of swing arm and between revolving dial, comprising at least one piece in counterweight can at the movable weight of vertical direction movement, the second plunger cylinder group of jacking movable weight is connected with between movable weight and revolving dial, first plunger cylinder group, second plunger cylinder group is connected with control valve group through being connected fluid pressure line with hydraulic oil container.
The know-why of such scheme is: when utilizing this system, control valve group is by the first plunger cylinder group, second plunger cylinder group conducting, when the equipment of excavator declines, swing arm utilizes its Action of Gravity Field on the first plunger cylinder group hydraulic jack, make the plunger rod retraction of the first plunger cylinder group hydraulic jack, hydraulic oil in first plunger cylinder group hydraulic jack enters into the second plunger cylinder group hydraulic jack through fluid pressure line and control valve group, the plunger rod of the second plunger cylinder group hydraulic jack is made to stretch out jacking movable weight, the potential energy being movable weight by the part potential energy of equipment stores.And when swing arm needs lifting, the oil-filled jacking excavator swing arm of boom cylinder of excavator, meanwhile, movable weight utilizes the plunger rod of its gravitational force urges second plunger cylinder group hydraulic jack to make it bounce back, the hydraulic oil of the second plunger cylinder group hydraulic jack enters into the first plunger cylinder group hydraulic jack through fluid pressure line and control valve group, the plunger rod of the first plunger cylinder group hydraulic jack is stretched out, lifting excavator swing arm common with movable arm cylinder of excavator, realize recycling of excavator swing arm potential energy, reduce the energy required for movable arm cylinder of excavator lifting swing arm, reduce complete machine energy consumption.
In the present invention, the total measurement (volume) of the above the first plunger cylinder group hydraulic jack is not more than the total measurement (volume) of the second plunger cylinder group hydraulic jack, this plunger rod that can ensure that the second plunger cylinder group does not affect the first plunger cylinder group hydraulic jack is stretched or full reduced action and affect the normal operation of excavator entirely, when the total measurement (volume) of the first plunger cylinder group hydraulic jack equals the total measurement (volume) of the second plunger cylinder group hydraulic jack, the plunger rod that second plunger cylinder group neither affects the first plunger cylinder group hydraulic jack is stretched or full reduced action entirely, and its volume is got back and made full use of.
In the present invention, revolving dial is provided with leading truck movable weight being carried out to vertical direction guiding, the effect of this leading truck keeps movable weight only to move in vertical direction, movable weight is avoided to be occurred deflection by during jacking, non axial power is produced to the second plunger cylinder group hydraulic jack, causes oil cylinder to damage.When there being leading truck, second plunger cylinder group hydraulic jack is without the need to providing non-axial force to movable weight, therefore the plunger rod of its hydraulic jack and cylinder barrel two ends with the connection between movable weight, revolving dial can be fixedly connected with, hinged and contact and connect, wherein with hinged more excellent, and hinged in the hinged optimum of spherojoint, the second plunger cylinder group hydraulic jack is done on any direction rotation around pin joint can be made like this, suppress oil cylinder when avoiding movable weight to occur deflection, cause oil cylinder to damage.
In the present invention, as the second conception plans, the plunger rod of the second plunger cylinder group hydraulic jack is fixedly connected with revolving dial with one of them parts of cylinder barrel two parts, another parts are fixedly connected with movable weight or hinged, such as plunger rod is fixedly connected with revolving dial, cylinder barrel is fixedly connected with movable weight, and now plunger rod deflection can not occur relative to revolving dial, the double effect playing leading truck.Also can be that the cylinder barrel of hydraulic jack is fixedly connected with revolving dial, deflection can not be there is relative to revolving dial oil cylinder, plunger rod is hinged with movable weight or be fixedly connected with, movable weight is arranged the hole holding oil cylinder, when movable weight moves up and down, the hole of movable weight is enclosed within cylinder barrel and slides up and down, and now cylinder barrel also plays the effect of leading truck.
In the present invention, preferably, above-described movable weight is provided with vertical groove at its side surface, second plunger cylinder group hydraulic jack is arranged in groove, and/or vertical hole is provided with in moving counterweight block, second plunger cylinder group hydraulic jack is arranged in hole, and this measure can reduce the center of gravity of movable weight, improves stability and the safety of equipment.
In the present invention, preferably, above-described control valve group comprises two-position three-way valve and the first one way valve, two-position three-way valve has A mouth, B mouth, C mouth three hydraulic fluid ports, wherein A mouth is communicated with the first plunger cylinder group hydraulic jack through fluid pressure line, B mouth is communicated with the second plunger cylinder group hydraulic jack through fluid pressure line, C mouth is communicated with hydraulic oil container through fluid pressure line, C mouth is communicated with A mouth and/or B mouth through the first one way valve, first one way valve is from C mouth to A mouth and/or B mouth one-way conduction, when the spool of two-position three-way valve is in primary importance, A mouth is communicated with B mouth, now mode of communicating opens this movable arm potential energy cyclic utilization system, hydraulic oil can circulate between A mouth and B mouth, thus make to carry out potential energy converting and energy between swing arm and movable weight, when the hydraulic oil of the first plunger cylinder group hydraulic jack is not enough, such as, when the plunger rod of the first plunger cylinder group hydraulic jack still needs to stretch when the plunger rod of the second plunger cylinder group hydraulic jack is in full reduced state, carry out repairing by the first one way valve to the first plunger cylinder group hydraulic jack.When the spool of two-position three-way valve is in the second place, A mouth and B mouth are interconnected with C mouth respectively, now state closes this movable arm potential energy cyclic utilization system, hydraulic oil in second plunger cylinder group hydraulic jack gets back to hydraulic oil container through B mouth and C mouth, and movable weight position reduces; And along with the lifting of swing arm and decline, the plunger rod of the first plunger cylinder group hydraulic jack also stretches, and hydraulic oil passes in and out the first plunger cylinder group hydraulic jack through C mouth and A mouth thereupon, make excavator can normally operation.Two-position three-way valve can be electromagnetic valve, pilot operated valve device etc.
As further improvement, also choke valve is comprised in control valve group, choke valve can be arranged in the valve body of two-position three-way valve, be positioned at from B mouth to the pipeline of C mouth, when the spool of two-position three-way valve is in the second place, B mouth to C mouth through choke valve, when choke valve makes to cut out this system, hydraulic oil in second plunger cylinder group hydraulic jack slowly flows to hydraulic oil container, avoid the decrease speed of movable weight too fast, the second one way valve can also be comprised in addition in control valve group, second one way valve group is connected in series with choke valve, when the spool of two-position three-way valve is in the second place, second one way valve from B mouth to C mouth one-way conduction, second one way valve can prevent after this system of closedown, hydraulic oil enters into the second plunger cylinder group hydraulic jack through C mouth and B mouth, also namely prevent the plunger rod of the second plunger cylinder group hydraulic jack from stretching out, namely plunger rod can not stretch out also has to movable weight the effect pulling down and fasten, prevent movable weight from being the vibrations of generation in excavator work and producing vertical tremor relative to revolving dial.
In the present invention, the setting model of movable weight weight the best should meet the following conditions: the weight G of movable weight, the cylinder barrel cross-sectional area summation S2 of the second plunger cylinder group hydraulic jack, equipment act on the power F on the plunger rod of the first plunger cylinder group hydraulic jack when being in maximum digging radius state, the cylinder barrel cross-sectional area summation S1 of the first plunger cylinder group hydraulic jack, meet following relation: G ÷ S2=(F ÷ S1) × K, wherein COEFFICIENT K span is 0<K≤1.
The invention has the beneficial effects as follows:
1. advantage of the present invention is by arranging two pairs of plunger cylinder groups, when descending movable arm of excavator, the gravitional force being movable weight by digger operating device part transform gravitational energy stores, the gravitional force utilizing movable weight to store when swing arm needs lifting, to do work lifting swing arm with boom cylinder acting in conjunction, realize recycling of part gravitional force in the digger operating device course of work, reduce energy loss, reach energy-saving and cost-reducing effect.
2. structure of the present invention is simple, cost is low, and reliability is high, impacts little, can greatly improve the handling of excavator swing arm.
Accompanying drawing explanation
Fig. 1 is the principle schematic of two-bit triplet electromagnetic valve when primary importance in excavator swing arm potential energy cyclic utilization system of the present invention;
Fig. 2 is the principle schematic of two-bit triplet electromagnetic valve when the second place in excavator swing arm potential energy cyclic utilization system of the present invention;
Fig. 3 is the scheme of installation of movable weight, the second plunger cylinder group and revolving dial in excavator swing arm potential energy cyclic utilization system of the present invention;
Fig. 4 is the overall structure schematic diagram in excavator swing arm potential energy cyclic utilization system of the present invention;
Fig. 5 is the scheme of installation of the first plunger cylinder group hydraulic jack and swing arm in excavator swing arm potential energy cyclic utilization system of the present invention.
Component title and sequence number in figure:
1. movable weight, 2. the second plunger cylinder group hydraulic jack, 3. revolving dial, 4. fluid pressure line, 5. two-bit triplet electromagnetic valve, 6. hydraulic oil container, 8. the first plunger cylinder group hydraulic jack, 9. boom cylinder, 10. swing arm, 12. first one way valves, 13. choke valves, 15. second one way valves.
Detailed description of the invention
Below in conjunction with drawings and Examples, excavator swing arm potential energy cyclic utilization system of the present invention is described.
As Figure 1-5, wherein Fig. 1 and Fig. 2 is principle schematic of the present invention, this excavator swing arm potential energy cyclic utilization system, comprise two-bit triplet electromagnetic valve 5, hydraulic oil container 6, the swing arm 10 of excavator and revolving dial 3, two-bit triplet electromagnetic valve 5 and hydraulic oil container 6 are arranged on revolving dial 3, wherein, two-bit triplet electromagnetic valve 5 has A mouth, B mouth, C mouth three hydraulic fluid ports, wherein A mouth is communicated with the first plunger cylinder group hydraulic jack 8 through fluid pressure line 4, B mouth is communicated with the second plunger cylinder group hydraulic jack 2 through fluid pressure line 4, C mouth is communicated with hydraulic oil container 6 through fluid pressure line 4.In two-bit triplet electromagnetic valve 5, its spool has primary importance and the second place, the first one way valve 12, second one way valve 15 and 13 choke valve is provided with in the valve body of two-bit triplet electromagnetic valve 5, second one way valve 15 is connected with choke valve 13, the oil-in of the first one way valve 12 is communicated with C mouth, and oil-out is communicated with B mouth or A mouth.When the spool of two-bit triplet electromagnetic valve 5 is in primary importance, as shown in Figure 1, A mouth is communicated with B mouth; When the spool of two-bit triplet electromagnetic valve 5 is in the second place, as shown in Figure 2, B mouth is communicated with the oil-in of the second one way valve 15, and the oil-out of the second one way valve 15 is communicated with C mouth through choke valve 13; A mouth is directly communicated with C mouth.
As shown in Figure 3, Figure 4, revolving dial 3 is provided with movable weight 1 moving up and down, groove is provided with at the leading flank of movable weight 1 and trailing flank, second plunger cylinder group hydraulic jack 2 is arranged in this groove, second plunger cylinder group hydraulic jack 2 is interconnected by fluid pressure line 4, wherein the plunger rod of the second plunger cylinder group hydraulic jack 2 is fixedly connected with revolving dial 3, cylinder barrel is fixedly connected with movable weight 1, along with the turnover of the hydraulic oil in the second plunger cylinder group hydraulic jack 2, movable weight 1 also increases or reduces.
As shown in Figure 4, Figure 5, the equipment of excavator comprises swing arm 10, and lower end and the revolving dial 3 of swing arm 10 are hinged, upper end and dipper (not shown) hinged, dipper end connects bucket or other work implements.Boom cylinder 9 is connected with for lifting or reduce swing arm 10 between the middle part of swing arm 10 and revolving dial 3.First plunger cylinder group hydraulic jack 8 is arranged on the side of boom cylinder 9, and plunger rod and the swing arm of the first plunger cylinder group hydraulic jack 8 are hinged, cylinder barrel and revolving dial 3 hinged, along with the lifting of swing arm 10, the first plunger cylinder group hydraulic jack 8 also stretches thereupon.
When opening this excavator swing arm potential energy cyclic utilization system, the spool of two-bit triplet electromagnetic valve 5 is in primary importance, now A mouth is communicated with B mouth, during the oil-filled lifting swing arm of boom cylinder 9, the plunger rod of the first plunger cylinder group hydraulic jack 8 is also drawn out, first one way valve 12 of hydraulic oil in hydraulic oil container 6 in two-bit triplet electromagnetic valve 5 is oil-filled in the first plunger cylinder group hydraulic jack 8, when swing arm 10 declines, hydraulic oil in first plunger cylinder group hydraulic jack 8 then enters in the second plunger cylinder group hydraulic jack 2 through A mouth and B mouth, the plunger rod of the second plunger cylinder group hydraulic jack 2 is stretched out, movable weight 1 is by lifting, the part transform gravitational energy of swing arm 10 is the gravitional force of movable weight 1, the recovery achieving part movable arm potential energy stores.If afterwards swing arm 10 again lifting time, hydraulic oil in second plunger cylinder group hydraulic jack 2 enters in the first plunger cylinder group hydraulic jack 8 through B mouth and A mouth, first plunger cylinder group hydraulic jack 8 and boom cylinder 9 acting in conjunction lifting swing arm 10, the now height reduction of movable weight 1, its gravitional force stored is used for lifting swing arm 10, realizes the recycling previously storing potential energy.Along with swing arm lifting each time, the part gravitional force of swing arm 10 is converted into the gravitional force of movable weight 1 and is utilized in upper once swing arm 10 lifting process, thus realize recycling of movable arm potential energy, save the energy consumption of excavator required for lifting swing arm, reach energy-conservation object.
When because of need of work, such as, when excavator is in and ramp carries out operation, for the purpose of safety, need to close this excavator swing arm potential energy cyclic utilization system make the height reduction of movable weight and reduce the center of gravity of complete machine, now the spool of two-bit triplet electromagnetic valve 5 is in the second place, and the hydraulic oil now in the second plunger cylinder group hydraulic jack 2 enters into hydraulic oil container 6 through B mouth, the second one way valve 15, choke valve 13, C mouth.Owing to there being the throttling action of choke valve 13, the hydraulic oil in the second plunger cylinder group hydraulic jack slowly flows out reposefully, and the speed that movable weight 1 declines is slowly steady, can not impact revolving dial 3.After the plunger rod of the second plunger cylinder group hydraulic jack 2 is full reduced, second one way valve 15 is closed, hydraulic oil can not enter in the second plunger cylinder group hydraulic jack 2, its plunger rod can not stretch out, second plunger cylinder group hydraulic jack 2 thus play the effect of fixing movable weight 1, can prevent movable weight 1 from revolving dial 3, upper and lower vibrations occurring because of the vibrations of machinery.When the spool of two-bit triplet electromagnetic valve 5 is in the second place, A mouth and C mouth are interconnected, along with boom cylinder 9 lifting or reduction swing arm, first plunger cylinder group hydraulic jack 8 also stretches thereupon, hydraulic oil, through C mouth, A mouth and enter or flow out in the first plunger cylinder group hydraulic jack 8, does not affect can normally working of hydraulic crawler excavator.
In the present embodiment, when opening this excavator swing arm potential energy cyclic utilization system, in order to ensure that the first plunger cylinder group hydraulic jack 8 can be stretched entirely with full reduced, the total measurement (volume) of the first plunger cylinder group hydraulic jack 8 can not be greater than the total measurement (volume) of the second plunger cylinder group hydraulic jack, wherein when the second plunger cylinder group hydraulic jack 2 total measurement (volume) equals the total measurement (volume) of the first plunger cylinder group hydraulic jack 8, the plunger rod of the second plunger cylinder group hydraulic jack 2 is in stretches state entirely, and the plunger rod of the first plunger cylinder group hydraulic jack 8 is then in full reduced state; Or the plunger rod of the first plunger cylinder group hydraulic jack 8 is in stretches state entirely, and the plunger rod of the second plunger cylinder group hydraulic jack 2 is then in full reduced state; Thus reach the maximum utilization of resource.
In excavator, the quality sum of equipment and excavator swing arm, dipper, bucket or other work implements is often larger, and the weight mass of excavator is often limited, therefore swing arm is only had part to be recovered utilization by gravitional force during lifting, in order to reach best effect, the weight value of movable weight 1 meets following relation:
G÷S2＝(F÷S1)×K
Wherein:
---COEFFICIENT K span is 0<K≤1; Preferred span is 0.5≤K≤1
---G is the weight of movable weight;
---S2 is the cylinder barrel cross section summation of the second plunger cylinder group hydraulic jack;
---F is the power that equipment acts on the plunger rod of the first plunger cylinder group hydraulic jack when being in maximum digging radius state;
---S1 is the cylinder barrel cross section summation of the first plunger cylinder group hydraulic jack.
In the present embodiment, can also arrange vertical hole in the body of movable weight, the second plunger cylinder group hydraulic jack is arranged in this hole, thus plays the second plunger cylinder group hydraulic jack 2 and block hiding effect, improves the neat and artistic property of complete machine.
In the present embodiment, leading truck can also be set on revolving dial 3, such as, be fixed on the vertical lead on revolving dial 3, movable weight 1 be carried out to the guiding on vertical direction, prevent movable weight 1 from the process of lifting, occurring deflection.The form of leading truck can be various, such as directly utilize the second plunger cylinder group hydraulic jack 2 as leading truck, now the cylinder barrel of the second plunger cylinder group hydraulic jack 2 is fixedly connected with revolving dial 3, plunger rod is fixedly connected with movable weight or hinged, and the lateral surface of cylinder barrel contacts with the groove on movable weight or hole sidewalls to coordinate and slides and lead to movable weight; Or plunger rod is fixedly connected with revolving dial, cylinder barrel is fixedly connected with movable weight.
Claims (10)
1. an excavator swing arm potential energy cyclic utilization system, comprise revolving dial, equipment, be arranged on the counterweight on revolving dial and hydraulic oil container, described equipment comprises the swing arm hinged with revolving dial, it is characterized in that: in the middle part of described swing arm and between revolving dial, be connected with the first plunger cylinder group, comprising at least one piece in described counterweight can at the movable weight of vertical direction movement, the second plunger cylinder group of jacking movable weight is connected with between described movable weight and revolving dial, described first plunger cylinder group, second plunger cylinder group is connected with control valve group through connecting line with hydraulic oil container.
2. excavator swing arm potential energy cyclic utilization system according to claim 1, is characterized in that: the total measurement (volume) of described first plunger cylinder group is not more than the total measurement (volume) of the second plunger cylinder group.
3. excavator swing arm potential energy cyclic utilization system according to claim 1, is characterized in that: described revolving dial is provided with the leading truck described movable weight being carried out to vertical direction guiding.
4. excavator swing arm potential energy cyclic utilization system according to claim 3, is characterized in that: the hydraulic jack of described second plunger cylinder group wherein one end is hinged with movable weight or be fixedly connected with, and the other end is hinged with revolving dial or be fixedly connected with.
5. excavator swing arm potential energy cyclic utilization system according to any one of claim 1 to 4, it is characterized in that: the side surface of described movable weight is provided with vertical groove, described second plunger cylinder group hydraulic jack is positioned at described groove, and/or vertical hole is provided with in moving counterweight block, described second plunger cylinder group hydraulic jack is positioned at described hole.
6. excavator swing arm potential energy cyclic utilization system according to claim 5, it is characterized in that: the plunger rod of described second plunger cylinder group hydraulic jack is fixedly connected with described revolving dial with the end of one of them parts of cylinder barrel two parts, another parts are fixedly connected with described movable weight or hinged.
7. excavator swing arm potential energy cyclic utilization system according to any one of claim 1 to 4, it is characterized in that: described control valve group comprises two-position three-way valve and the first one way valve, described two-position three-way valve have A mouth, B mouth, C mouth three hydraulic fluid ports, wherein A mouth is communicated with the first plunger cylinder group through fluid pressure line, B mouth is communicated with the second plunger cylinder group through fluid pressure line, C mouth is communicated with hydraulic oil container through fluid pressure line, C mouth is communicated with A mouth and/or B mouth through the first one way valve, and the first one way valve is from C mouth to A mouth and/or B mouth one-way conduction; When the spool of two-position three-way valve is in primary importance, A mouth is communicated with B mouth, and when the spool of two-position three-way valve is in the second place, A mouth is communicated with C mouth respectively with B mouth.
8. excavator swing arm potential energy cyclic utilization system according to claim 7, is characterized in that: also comprise choke valve, and described choke valve is arranged on from B mouth to the pipeline of C mouth.
9. excavator swing arm potential energy cyclic utilization system according to claim 8, is characterized in that: also comprise the second one way valve, and described second one way valve is connected in series mutually with described choke valve, described second one way valve from B mouth to C mouth one-way conduction.
10. excavator swing arm potential energy cyclic utilization system according to claim 1 and 2, it is characterized in that: when the weight G of described movable weight, the cylinder barrel cross-sectional area summation S2 of the second plunger cylinder group hydraulic jack, equipment are in maximum digging radius state, swing arm acts on power F on the plunger rod of the first plunger cylinder group hydraulic jack, the cylinder barrel cross-sectional area summation S1 of the first plunger cylinder group hydraulic jack meets following relation: G ÷ S2=(F ÷ S1) × K, wherein COEFFICIENT K span is 0<K≤1.
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| CN201210508867.9A CN102943496B (en) | 2012-12-03 | 2012-12-03 | Potential energy recycling system of movable arm of excavator |
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| CN104019086B (en) * | 2014-06-13 | 2016-07-27 | 三一重机有限公司 | A kind of energy regenerating reuse means and using method thereof and excavator |
| CN109183869A (en) * | 2018-11-05 | 2019-01-11 | 山东帝盟重工机械有限公司 | It is a kind of to excavate the excavator that range is big and stability is good |
| CN109989445B (en) * | 2019-04-24 | 2023-10-10 | 浙江顺得机械有限公司 | Excavator counterweight structure |
| IT202100014852A1 (en) | 2021-06-08 | 2022-12-08 | Cnh Ind Italia Spa | IMPROVED HYDRAULIC ASSEMBLY FOR HYDRAULIC ENERGY RECOVERY SYSTEMS IN WORK VEHICLES |
| CN115898398B (en) * | 2022-11-16 | 2023-11-03 | 苏尼特金曦黄金矿业有限责任公司 | Medium-length hole mining device and technology for irregular thick and large ore body |
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| US7827787B2 (en) * | 2007-12-27 | 2010-11-09 | Deere & Company | Hydraulic system |
| DE102008034582A1 (en) * | 2008-07-24 | 2010-01-28 | Liebherr-Hydraulikbagger Gmbh | implement |
| FI20086027A0 (en) * | 2008-10-30 | 2008-10-30 | Mantsinen Group Ltd Oy | Energy storage method and apparatus |
| CN102518606B8 (en) * | 2011-12-12 | 2017-04-19 | 杨双来 | Lifting system and lifting method for crane boom of working machine and working machine |
-
2012
- 2012-12-03 CN CN201210508867.9A patent/CN102943496B/en not_active Expired - Fee Related
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| CN102943496A (en) | 2013-02-27 |
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Address after: Yancheng Road, Wujin high tech Industrial Development Zone, Changzhou City, Jiangsu Province, No. 588 213161 Applicant after: LIUGONG CHANGZHOU MACHINERY Co.,Ltd. Applicant after: Liuzhou Liugong Excavators Co.,Ltd. Applicant after: GUANGXI LIUGONG MACHINERY Co.,Ltd. Address before: Yancheng Road, Wujin high tech Industrial Development Zone, Changzhou City, Jiangsu Province, No. 588 213161 Applicant before: LIUGONG CHANGZHOU EXCVAVTOR Co.,Ltd. Applicant before: Liuzhou Liugong Excavators Co.,Ltd. Applicant before: GUANGXI LIUGONG MACHINERY Co.,Ltd. |
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