CN105712259A - Ground transportation tool with working hydraulic system - Google Patents
Ground transportation tool with working hydraulic system Download PDFInfo
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- CN105712259A CN105712259A CN201510895574.4A CN201510895574A CN105712259A CN 105712259 A CN105712259 A CN 105712259A CN 201510895574 A CN201510895574 A CN 201510895574A CN 105712259 A CN105712259 A CN 105712259A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/20—Means for actuating or controlling masts, platforms, or forks
- B66F9/22—Hydraulic devices or systems
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
- Fluid-Pressure Circuits (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
The invention relates to a ground transporation tool with a working hydraulic system (2). The working hydraulic system comprises at least two hydraulic axles (H1,H2), a hydraulic pump (10) is arranged to supply the pressure medium to the hydraulic axles, each hydraulic axle (H1;H2) comprises a hydraulic consumer (6;8) which is operated by electrically operatable control valves (15;16). An operation element (11;12) is arranged for each hydraulic axle (H1;H2); during the operation process, the operation element generates the control voltage (U1;U2) for the hydraulic axle (H1;H2) as the output signal. An electronic control device (20) generates control current (I1;I2) for operating the control valve (15;16) of the hydraulic axle (H1;H2) from the control voltage (U1;U2). The electronic control device (20) is configured that generation of the control current (I2;I1) of the control valve (16;15) of one hydraulic axle (H2;H1) is according to the control voltage (U2;U1) of the hydraulic axle (H2;H1) and the control voltage (U1;U2) of at least the other hydraulic axle (H1;H2).
Description
Technical field
The present invention relates to a kind of vehicle with hydraulic system of working, described hydraulic system of working includes at least two hydraulic axis, in order to pressure medium is supplied to described hydraulic axis arrange a hydraulic pump, wherein, each hydraulic axis has a hydraulic consumers device, described hydraulic consumers device can by means of manipulating by the electric control valve manipulated, and for each hydraulic axis, one operating element is set, described operating element produces the control voltage for hydraulic axis as output signal when manipulation, wherein, one electronic-controlled installation is set, described electronic-controlled installation is produced the control electric current controlling valve for manipulating hydraulic axis by controlling voltage.
Background technology
The hydraulic system of working of vehicle has multiple hydraulic axis, such as the lifting driving device and the reclining drive device as the second hydraulic axis of the first hydraulic axis.Each hydraulic axis includes a hydraulic consumers device, and described hydraulic consumers device can by means of manipulating by the electric control valve manipulated.In order to by operator, arrange an operating element for each hydraulic axis, described operating element produces the control voltage for hydraulic axis as output signal when manipulation.By correspondingly manipulating the operating element of hydraulic axis, the driver of vehicle can control and manipulation by the corresponding of predetermined hydraulic pressure axle.At this, by the corresponding manipulation of described operating element and from there through controlling, as output signal, the predetermined value of movement velocity that voltage represents the customer of the volume flow demand for hydraulic axis (volume flow rated value) predetermined by driver and hydraulic axis produced by the operating element being steered.The control electric current controlling valve that can electric manipulate for manipulating this hydraulic axis is produced according to the voltage that controls of the operating element being steered of hydraulic axis by electronic-controlled installation, to produce the corresponding valve deflection controlling valve of this hydraulic axis, the deflection of described valve achieves the customer that volume flow is transported to this hydraulic axis, and described volume flow is corresponding to the volume flow demand predetermined by manipulating described operating element.
In known vehicle, only according to being allocated to the manipulation of operating element of described hydraulic axis and thus realizing the control valve of control hydraulic axis only according to the voltage that controls as output signal produced by the operating element by described hydraulic axis.Therefore, driver is intended for the desired volume flow demand of hydraulic axis and the valve deflection of the thus determination controlling valve of predetermined described hydraulic axis by correspondingly manipulating the operating element of hydraulic axis.
If multiple hydraulic axis are carried out supply pressure medium by a unique hydraulic pump, then only according to controlling when voltage realizes controlling this vehicle controlling valve of described hydraulic axis but produce following problems as output signal produced by the operating element of hydraulic axis.
If by the operating unit of two or more hydraulic axis is manipulated and thus manipulated concurrently simultaneously, then this may result in the valve that controls changed stepwise in the running status determined by being steered and flows to the volume flow of hydraulic axis and thus cause changing stepwise the movement velocity of the customer of described hydraulic axis.This running status can such as so produce, namely when manipulating two hydraulic axis at the same time the customer of the first hydraulic axis towards machinery end stop move time, thus higher volume flow is fed to the customer of the second hydraulic axis stepwise.This step of the volume flow of the second hydraulic axis manipulated concurrently when manipulating two or more hydraulic axis at the same time changes and can so occur equally, namely when hydraulic axis have volume flow restriction and exist to this hydraulic axis under-supply time.When under-supply, the volume flow required by the described operating element of manipulation of hydraulic axis is higher than the volume flow provided by hydraulic pump, thus being flowed to the volume flow controlling valve of customer less than the summation by the volume flow manipulated required by described operating element by hydraulic pump.If terminating the under-supply of hydraulic axis and being substantially provide for again the volume flow of customer motion by hydraulic pump, then on customer under-supply before, regulate the phase step type of volume flow and the fast movement velocity increasing and thus regulating described customer.
If the move steadiness for vehicle and the stability of the customer of this hydraulic axis, the reclining drive device such as with the banking motion of load carrying device is crucial, then due to the volume flow of customer of hydraulic axis determined when manipulating multiple hydraulic axis concurrently and simultaneously and the phase step type of movement velocity and the fast less desirable state having changed result in vehicle, described less desirable state can not promptly be compensated by changing the manipulation to the operating element being allocated to this hydraulic axis by the driver of vehicle fully owing to the step evolution of the movement velocity of the customer of this hydraulic axis changes.
Summary of the invention
It is an object of the invention to, it is proposed to a kind of vehicle starting described type, wherein, reduce the less desirable phase step type producing hydraulic axis when manipulating multiple hydraulic axis at the same time and fast motion changes.
This purpose is accomplished by according to the present invention, and namely electronic-controlled installation is constructed so that the control voltage controlling voltage and at least one other hydraulic axis according to this hydraulic axis that produces controlling electric current controlling valve of a hydraulic axis carries out.Therefore, at the same time and when manipulating multiple hydraulic axis concurrently, not only according to the output signal and control voltage thus of the operating element being configured to described hydraulic axis, and additionally according to being allocated to the output signal of operating element of an other hydraulic axis and control voltage thus realizes controlling the control valve of described hydraulic axis.Therefore, according to the output signal of multiple operating elements and the control electric current controlling valve controlling the hydraulic axis that voltage realization produces to determine.Therefore, exporting signal and thus controlling the control electric current that voltage correspondingly changes the control valve of the hydraulic axis determined by the hydraulic axis that be steered other according at least one, achieve in a simple manner decoupled when can manipulate multiple hydraulic axis at the same time and concurrently, reduce the fast and phase step type change of volume flow in the hydraulic axis determined and thus movement velocity.
An advantageous embodiment according to the present invention, described electronic-controlled installation is constructed so that the electric current that controls controlling valve of a hydraulic axis is limited according to the control voltage of at least one other hydraulic axis.Therefore, the control electric current controlling valve controlling the hydraulic axis that voltage restriction is determined when at the same time and thus manipulating multiple hydraulic axis concurrently on the time, according at least one other hydraulic axis.The control electric current controlling valve by restricting the described hydraulic axis determined achieves, and reduces when concurrently and simultaneously one other hydraulic axis of manipulation and thus reduces by driver by the predetermined volume flow demand of the operating element manipulating described hydraulic axis.Therefore, it can effectively reduce phase step type not predetermined by driver, changed and thus reduced the movement velocity in this hydraulic axis by the phase step type of the volume flow flowing into determined hydraulic axis change.
Advantageously, when electronic-controlled installation is constructed to manipulate multiple hydraulic axis at the same time, the electric current that controls controlling valve of a hydraulic axis is reduced compared with the control electric current controlling valve controlling voltage hydraulic axis described with when manipulating described hydraulic axis individually of at least one other hydraulic axis.Therefore, relative to when manipulating described hydraulic axis individually, the control electric current of described control valve is reduced the electric current that controls controlling valve of the hydraulic axis determined when manipulating multiple hydraulic axis at the same time.It is achieved that, namely when manipulating multiple hydraulic axis concurrently, reduce volume flow demand predetermined by manipulating described operating element by driver in a hydraulic axis, it is to say, this hydraulic axis control valve have as by driver by manipulate described operating element made a reservation for small valve deflect.By described measure, it is possible to the phase step type not predetermined by driver effectively reducing the hydraulic axis determined changes and thus reduce the phase step type change of the movement velocity in this hydraulic axis.
Particularly advantageously draw, the restriction controlling electric current can freely be programmed.Therefore, it is possible to the specified criteria realized with vehicle matches in a straightforward manner.When freely programming, it should can show that how that can freely determine affects the mathematical function controlling electric current controlling valve of the hydraulic axis determined by the control signal of the other operating element of other hydraulic axis and from there through controlling voltage.The restriction controlling electric current controlling valve to the hydraulic axis determined such as can be reduced linearly when manipulating multiple hydraulic axis at the same time.
An advantageous embodiment according to the present invention, hydraulic system of working has for promoting and the lifting driving device of the load carrying device that declines is as hydraulic axis with for making load carrying device lean forward and the reclining drive device of hypsokinesis is as other hydraulic axis, wherein, electronic-controlled installation is constructed to manipulate at the same time when promoting operating lifting driving device and described reclining drive device, the control electric current controlling valve controlling voltage restriction reclining drive device according to lifting driving device.If according to the control voltage of lifting driving device and the valve predetermined by driver controlling valve thus according to lifting driving device deflect the control electric current of the control valve of restriction reclining drive device, then when lifting driving device and arriving in the end stop of machinery, it is possible to manipulate promoting operating lifting driving device and effectively reduce volume flow and the thus phase step type of movement velocity and the fast increase of reclining drive device during reclining drive device at the same time.
An advantageously further scheme according to the present invention, electronic-controlled installation is constructed to manipulate at the same time when promoting operating lifting driving device and described reclining drive device, the control electric current controlling valve controlling voltage restriction lifting driving device according to reclining drive device.If according to the control electric current controlling valve of the control voltage of reclining drive device and the valve deflection restriction lifting driving device predetermined by driver according to reclining drive device, then when lifting driving device and arriving in the end stop of machinery, it is possible to manipulate promoting operating lifting driving device and effectively reduce volume flow and the thus phase step type of movement velocity and the fast increase of reclining drive device during described reclining drive device at the same time.
A favourable further scheme according to the present invention, electronic-controlled installation asks for the volume flow provided by hydraulic pump, and affects the control electric current controlling valve of at least one hydraulic axis when manipulating multiple hydraulic axis at the same time according to the volume flow provided by hydraulic pump.At this, hydraulic pump the volume flow provided can be measured by means of flow transducer by controlling device or alternatively be calculated by the rotating speed of hydraulic pump and row pressure volume.Therefore, the volume flow demand of the control to hydraulic axis predetermined by driver and thus this hydraulic axis reduces not only according to control and the volume flow demand of an other hydraulic axis manipulated concurrently, and the function additionally by the volume flow provided by hydraulic pump reduces.It is achieved that, it is to avoid or with pressure medium hydraulic axis controlled the under-supply of valve with non-critical value restriction.Therefore can terminate on customer under-supply after be effectively prevented from less desirable phase step type and the fast motion change of customer.
One according to the present invention preferred embodiment, and operating element is made up of at least one two axle stick.This two axle sticks provide controlling voltage and provide the control voltage for the second hydraulic axis in the second main steer direction and can be steered in centre position for the first hydraulic axis in the first main steer direction, in order to manipulate two hydraulic axis simultaneously and in parallel.
Accompanying drawing explanation
Embodiment according to sketch explains other advantages and the details of the present invention.In accompanying drawing:
Fig. 1 illustrates the vehicle according to the present invention with side view,
Fig. 2 illustrates the sketch of the hydraulic system of working of the vehicle of prior art, and
Fig. 3 illustrates the sketch of the hydraulic system of working of the vehicle according to the present invention.
Detailed description of the invention
Vehicle 1 according to the present invention shown in Fig. 1.In an illustrated embodiment, vehicle is configured to counterweight fork truck.
Vehicle has hydraulic system of working 2, and described hydraulic system of working includes multiple hydraulic axis H1, H2.In an illustrated embodiment, the first hydraulic axis H1 promotes and the lifting driving device 3 of the load carrying device L that declines is constituted by being used for, and the second hydraulic axis H2 is by being used for making the lean forward reclining drive device 4 of V and hypsokinesis R of load carrying device L to constitute.
Vehicle 1 has lifting arm 5, and load carrying device L can promote by means of lifting driving device 3 and decline in described lifting arm.For this, lifting driving device 3 includes at least one load lifting cylinder as hydraulic consumers device 6.Lifting arm 5 can around the tilting axis not being shown specifically on car body 7.In the described embodiment, reclining drive device 4 is for making lifting arm 5 lean forward V and hypsokinesis R and have at least one inclined cylinder as hydraulic consumers device 8.At this, the V that leans forward is corresponding to making lifting arm 5 and thus making load carrying device L tilt away from car body 7 ground, and hypsokinesis R is corresponding to making lifting arm 5 and thus making load carrying device L tilt to car body 7.
In order to pressure medium is supplied to hydraulic axis H1, the H2 of hydraulic system of working arrange a hydraulic pump 10.
For the driving task placement configurations of driver in the car body 7 of vehicle 1.In order to manipulate hydraulic axis H1, H2, at least one operating element 11,12 that can be manipulated by driver is arranged in described driving task position.Preferably, for the two hydraulic axis H1, the operating element 11 of H2,12 are configured to two axle sticks 13, described two axle sticks have a function of the operating element 11 for controlling the first hydraulic axis H1 in the first main steer direction, and have the function of operating element 12 for controlling the second hydraulic axis H2 in the second main steer direction be preferably perpendicular to the first main steer direction.At this, can simultaneously by operator and thus manipulation the two hydraulic axis H1, H2 by manipulating described two axle sticks 13 in the steer direction being between the main steer direction of the two.
The hydraulic system of working 2 of the vehicle 1 of prior art shown in Fig. 2 schematically connect figure, wherein, first hydraulic axis H1 is made up of the lifting driving device 3 of the load lifting cylinder having as hydraulic consumers device 6, and the second hydraulic axis H2 is made up of the reclining drive device 4 of the inclined cylinder having as hydraulic consumers device 8.
The hydraulic consumers device 6 of the first hydraulic axis H1 can by means of manipulating by the electric control valve 15 manipulated, and described control valve is connected with hydraulic pump 10 at input side.In the configuration of the first hydraulic axis H1 as lifting driving device 3, control valve 15 and there is closed position, the raised position for increasing productivity bogey L and the down position for the load carrying device L that declines.Operating element 11 is arranged to hydraulic axis H1, and described operating element produces the control voltage U1 for hydraulic axis H1 as output signal when manipulation.In the configuration of the operating element 11 as two axle sticks 13, when the first main steer direction manipulates described stick 13, produce the control voltage U1 for the first hydraulic axis H1.The control voltage U1 produced in corresponding manipulation by operating element 11 is transported to electronic-controlled installation 20 at input side.Electronic-controlled installation 20 is provided with calculation element 21, and described calculation element is produced the control electric current I1 controlling valve 15 for manipulating hydraulic axis H1 by controlling voltage U1.The voltage U1 that controls only according to operating element 11 realizes controlling the control valve 15 of hydraulic axis H1.At this, realize by controlling voltage U1 generation control electric current I1 according to function I1=f (U1) in computing module 21.
The hydraulic consumers device 8 of the second hydraulic axis H2 can by means of manipulating by the electric control valve 16 manipulated, and described control valve is connected with hydraulic pump 10 at input side.In the configuration as the second hydraulic axis H2 of reclining drive device 4, control valve 16 have closed position, for make load carrying device L or lifting arm 5 lean forward first control position and for make load carrying device L or lifting arm 5 hypsokinesis second control position.Operating element 12 is arranged to hydraulic axis H2, and described operating element produces the control voltage U2 for hydraulic axis H2 as output signal when manipulation.In the configuration of the operating element 12 as two axle sticks 13, when the second main steer direction manipulates described stick 13, produce the control voltage U2 for the second hydraulic axis H2.The control voltage U2 produced in corresponding manipulation by operating element 12 is transported to electronic-controlled installation 20 at input side.Electronic-controlled installation 20 is provided with calculation element 22, and described calculation element is produced the control electric current I2 controlling valve 16 for manipulating hydraulic axis H2 by controlling voltage U2.The voltage U2 that controls only according to operating element 12 realizes controlling the control valve 16 of hydraulic axis H2.At this, realize by controlling voltage U2 generation control electric current I2 according to function I2=f (U2) in computing module 22.
Therefore, by driver by operating element 11 in the hydraulic system of working of Fig. 2 of prior art, the manipulation of 12 requires and is intended for manipulation customer 6, the corresponding valve deflection of the control valve 15,16 of the volume flow of 8 and thus corresponding hydraulic axis H1, H2, wherein, by electronic-controlled installation 20 by control valve 15,16 is adjusted in required valve deflection by the volume flow corresponding to described requirement that controls controlling valve 15,16.
If by driver by operating element 11, the manipulation of 12 manipulates two hydraulic axis H1 simultaneously, H2, then can cause following running status, namely when the load lifting cylinder 6 lifting driving device 3 (hydraulic axis 1) arrives when promoting in the end stop of machinery, reclining drive device 4 (hydraulic axis 2) increases volume flow and the movement velocity thus of inclined cylinder 8 stepwise and soon, because suddenly at reclining drive device 4 with the second hydraulic axis H2 thus produces volume flow volume flow that is superfluous and that carried by hydraulic pump 10 only also flow into reclining drive device 4.
The hydraulic system of working 2 of vehicle 1 according to the present invention shown in Fig. 3 schematically connect figure, wherein, first hydraulic axis H1 is made up of the lifting driving device 3 of the load lifting cylinder having as hydraulic consumers device 6, and the second hydraulic axis H2 is made up of the reclining drive device 4 of the inclined cylinder having as hydraulic consumers device 8.
The hydraulic consumers device 6 of the first hydraulic axis H1 can by means of manipulating by the electric control valve 15 manipulated, and described control valve is connected with hydraulic pump 10 at input side.In the configuration of the first hydraulic axis H1 as lifting driving device 3, control valve 15 and there is closed position, the raised position for increasing productivity bogey L and the down position for the load carrying device L that declines.The valve 15 that controls being configured to control stroke valve constructs as the proportioning valve of throttling in centre position.Operating element 11 is arranged to hydraulic axis H1, and described operating element produces when manipulation to control voltage U1 as output signal.In the configuration of the operating element 11 as two axle sticks 13, produce to control voltage U1 when the first main steer direction manipulates described stick 13.The control voltage U1 produced in corresponding manipulation by operating element 11 is transported to electronic-controlled installation 20 at input side.
The hydraulic consumers device 8 of the second hydraulic axis H2 can by means of manipulating by the electric control valve 16 manipulated, and described control valve is connected with hydraulic pump 10 at input side.In the configuration as the second hydraulic axis H2 of reclining drive device 4, control valve 16 have closed position, for make load carrying device L or lifting arm 5 lean forward first control position and for make load carrying device L or lifting arm 5 hypsokinesis second control position.The valve 16 that controls being configured to control stroke valve constructs as the proportioning valve of throttling in centre position.Operating element 12 is arranged to hydraulic axis H2, and described operating element produces when manipulation to control voltage U2 as output signal.In the configuration of the operating element 12 as two axle sticks, produce for controlling voltage U2 when the second main steer direction manipulates described stick 13.The control voltage U2 produced in corresponding manipulation by operating element 12 is transported to electronic-controlled installation 20 at input side.
Control the control valve 16 that device 20 is arranged to utilize calculation element 22 to control the second hydraulic axis H2, at input side, the control voltage U1 controlling voltage U2 and the first hydraulic axis H1 of the second hydraulic axis H2 is flowed to described calculation element according to the present invention, and control voltage U2, U1 according to the two and produce the control voltage I2 controlling valve 16 for manipulating the second hydraulic axis H2.Therefore according to the present invention, according to the output signal of multiple operating elements 11,12 of multiple hydraulic axis H1, H2 and thus multiple hydraulic axis H1, H2 control voltage U1, U2 realize control the second hydraulic axis H2 control valve 16.Therefore, according to function I2=f (U2, U1), such as realize producing to control electric current I2 by controlling voltage U1, U2 according to the characteristic family of multidimensional in computing module 22.
Control the control valve 15 that device 20 is arranged to utilize calculation element 21 to control the first hydraulic axis H1, at input side, the control voltage U2 controlling voltage U1 and the second hydraulic axis H2 of the first hydraulic axis H1 is flowed to described calculation element according to the present invention, and control voltage U1, U2 according to the two and produce the control voltage I1 controlling valve 15 for manipulating the first hydraulic axis H1.Therefore according to the present invention, according to the output signal of multiple operating elements 11,12 of multiple hydraulic axis H1, H2 and thus multiple hydraulic axis H1, H2 control voltage U1, U2 realize control the first hydraulic axis H1 control valve 15.Therefore, according to function I1=f (U1, U2), such as realize producing to control electric current I1 by controlling voltage U1, U2 according to the characteristic family of multidimensional in computing module 21.
In an illustrated embodiment, wherein, first hydraulic axis H1 constitutes lifting driving device 3, and the second hydraulic axis H2 constitutes the reclining drive device 4 of vehicle 1, at the same time when manipulation lifting driving device 3 (promote and run) and reclining drive device 4, wherein produce two and control voltage U1 and U2, achieve controlling voltage U1 and limiting, thus according to the valve deflection predetermined by driver controlling valve 15 controlling to promote operating lifting driving device 3, the control electric current I2 controlling valve 16 that reclining drive device 4 is controlled according to the first hydraulic axis H1 in computing module 22.At this preferably, when there is the control voltage U1 of the first hydraulic axis H1, control electric current I2 realization restriction control electric current I2 by reducing.At this, it is possible to achieve along with the voltage U1 that controls increased reduces the control electric current I2 of the second hydraulic axis H2 linearly.Therefore, when in order to control the second hydraulic axis H2 deflect with making operating element 12 formed objects, less controlling electric current I2 and thus control the less valve deflection of valve 16 compared with when manipulating the second hydraulic axis H2 individually when achieving the parallel running added of two hydraulic axis H1, H2 of manipulation and thus the first hydraulic axis H1 at the same time.Therefore two hydraulic axis H2 are manipulated at the same time, during H1, control predetermined by driver valve deflection and thus being reduced by driver of the second hydraulic axis H2 of valve 16 by the volume flow (volume flow rated value) manipulated required by described operating element 12.
It is achieved that, at two hydraulic axis H2 of manipulation, in the running status of H1, the volume flow surplus when the volume flow of the first hydraulic axis H1 changes soon, such as produced suddenly in the second hydraulic axis H2 when the customer 6 of the first hydraulic axis H1 moves towards mechanical end stop is reduced.Therefore, by reducing controlling electric current I2 and thus reducing the volume flow demand predetermined by driver of the second hydraulic axis H2 of the second hydraulic axis H2 when manipulating the first hydraulic axis H1 concurrently according to control voltage U1, it is possible to the phase step type of the phase step type acceleration not predetermined by driver and movement velocity that reduce the second hydraulic axis H2 changes.
In an illustrated embodiment, wherein, first hydraulic axis H1 constitutes lifting driving device 3, and the second hydraulic axis H2 constitutes the reclining drive device 4 of vehicle 1, in addition when manipulation lifts driving device 3 (promote and run) and reclining drive device 4 at the same time, wherein produce two and control voltage U1 and U2, achieve controlling voltage U2 and limiting promoting the control electric current I1 controlling valve 15 that operating lifting driving device 3 is controlled thus according to the valve deflection predetermined by driver controlling valve 16 controlling reclining drive device 4 according to the second hydraulic axis H2 in computing module 21.At this preferably, when there is the control voltage U2 of the second hydraulic axis H2, control electric current I1 realization restriction control electric current I1 by reducing.At this, it is possible to achieve along with the voltage U2 that controls increased reduces the control electric current I1 of the first hydraulic axis H1 linearly.Therefore, when in order to control the first hydraulic axis H1 deflect with making operating element 11 formed objects, less controlling electric current I1 and thus control the less valve deflection of valve 15 compared with when manipulating the first hydraulic axis H1 individually when achieving the parallel running added of two hydraulic axis H1, H2 of manipulation and thus the second hydraulic axis H2 at the same time.Therefore two hydraulic axis H1 are manipulated at the same time, during H2, control predetermined by driver valve deflection and thus being reduced by driver of the first hydraulic axis H1 of valve 15 by the volume flow (volume flow rated value) manipulated required by described operating element 11.
Therefore in the vehicle 1 according to the present invention, by hydraulic axis H1, H2 influences each other, wherein, control electric current I2 or I1 control voltage U1 or U2 according to the hydraulic axis H1 manipulated concurrently or H2 when manipulating another hydraulic axis H1 or H2 concurrently that drive of one hydraulic axis H2 or H1 produces, achieve and manipulate multiple hydraulic axis H1 at the same time and thus concurrently, hydraulic axis H2 is reduced during H2, the fast rapid change of the customer motion of H1, described rapid change is changed by happen suddenly and fast pressure change or volume flow and causes.
Change by can reduce the saltatory of the volume flow of a hydraulic axis H2 or H1 in the present invention when manipulating another hydraulic axis H1 or H2 concurrently, therefore particular advantage is obtained when the second hydraulic axis 2 is embodied as reclining drive device 4, because manipulating reclining drive device 4 at the same time and lifting arm 5 or the less desirable and fast banking motion of load carrying device L can being avoided when promoting operating lifting driving device 3.
Therefore, achieve the characteristic family according to the multidimensional controlling voltage U1, U2 in the present invention and be configured on the control valve 15,16 of proportioning valve restriction volume flow at hydraulic axis H1, H2.Because according to the vehicle of the present invention passing through affect (reduction) hydraulic axis H2, the control electric current I2 of H1, I1 and thereby through reduce hydraulic axis H2, the volume flow demand predetermined by driver of H1 realizes making when manipulating another hydraulic axis H1 or H2 concurrently the phase step type volume flow of a hydraulic axis H2 or H1 change and reduces, so control valve 15 simple and with low cost can be utilized, 16 make the phase step type volume flow of a hydraulic axis H2 or H1 change when manipulating another hydraulic axis H1 or H2 concurrently is prevented from the phase step type on thus customer 8 or 6 and fast rapid change or reduces, and the phase step type volume flow in order to reduce a hydraulic axis H2 or H1 is changed without additional valve.
The present invention is not limited to the described embodiment with two hydraulic axis H1, H2.Will be understood that, it is possible to the hydraulic axis of more than two is set, and the control voltage of impact (reduction) hydraulic axis when manipulating multiple hydraulic axis at the same time, can be realized by the control voltage of all hydraulic axis manipulated concurrently.
Substitute voltage U1 or U2 that control according to the hydraulic axis H1 being steered or H2 simultaneously and reduce control electric current I2 or I1 of hydraulic axis H2 or H1 linearly, can arrange otherwise by controlling voltage U1 or U2 impact control electric current I2 or I1, wherein it is possible to realize impact, such as restriction by the mathematical function that can freely determine to control electric current I2 or I1.
In addition, not only by controlling voltage U2 or U1 and the predetermined value from there through one or more hydraulic axis H2 manipulated concurrently or H1, and additionally by the volume flow provided by hydraulic pump 10 and thus for the function of volume flow passed through, by driver, the control (required volume flow) that the described operating element 11 or 12 of manipulation is predetermined to what reduce hydraulic axis H1 or H2.When manipulating multiple hydraulic axis H1, H2 at the same time, hydraulic pump 10 volume flow provided can be calculated by electronic-controlled installation 20 or utilize sensor device measure and flow to computing module 21,22.Therefore, can pass through when manipulating multiple hydraulic axis H1, H2 at the same time correspondingly to reduce to control electric current I1, I2 avoids or reduces controlling valve 15,16 under-supply, thus prevent the volume flow on customer 6,8 and the thus phase step type of movement velocity and fast increase when terminating under-supply.Therefore, the predetermined value of the volume flow conveying reciprocally affected for controlling valve 15,16 and the predetermined value of the volume flow altogether required of hydraulic axis H1, H2 are achieved when manipulating multiple hydraulic axis H1, H2 at the same time and thus concurrently.
Claims (8)
1. a vehicle (1) with hydraulic system of working (2), described hydraulic system of working includes at least two hydraulic axis (H1, H2), in order to pressure medium is supplied to described hydraulic axis arrange a hydraulic pump (10), wherein, each hydraulic axis (H1；H2) there is a hydraulic consumers device (6；8), described hydraulic consumers device can by means of can electricity manipulation control valve (15；16) manipulate, and be each hydraulic axis (H1；H2) one operating element (11 is set；12), described operating element produces for described hydraulic axis (H1 when manipulation；H2) control voltage (U1；U2) as output signal, wherein, arranging an electronic-controlled installation (20), described electronic-controlled installation is by described control voltage (U1；U2) produce to be used for manipulating described hydraulic axis (H1；H2) control valve (15；16) control electric current (I1；I2), it is characterised in that described electronic-controlled installation (20) is constructed so that a hydraulic axis (H2；H1) control valve (16；15) control electric current (I2；I1) generation is according to this hydraulic axis (H2；H1) control voltage (U2；And at least one other hydraulic axis (H1 U1)；H2) control voltage (U1；U2) carry out.
2. vehicle according to claim 1, it is characterised in that described electronic-controlled installation (20) is constructed so that a hydraulic axis (H2；H1) control valve (16；15) control electric current (I2；I1) according at least one other hydraulic axis (H1；H2) control voltage (U1；U2) limited.
3. vehicle according to claim 1 and 2, it is characterised in that described electronic-controlled installation (20) is constructed to manipulate multiple hydraulic axis (H2, H1 at the same time；H1, H2) time, a hydraulic axis (H2；H1) control valve (16；15) control electric current (I2；I1) according at least one other hydraulic axis (H1；H2) control voltage (U1；U2) with manipulating this hydraulic axis (H2 individually；H1) this hydraulic axis (H2 time；H1) control valve (16；15) control electric current (I2；I1) compare and be reduced.
4. the vehicle according to Claims 2 or 3, it is characterised in that described control electric current (I2；I1) restriction can freely be programmed.
5. vehicle according to any one of claim 1 to 4, it is characterized in that, described hydraulic system of working (2) has for promoting and the lifting driving device (3) of the load carrying device (L) that declines as hydraulic axis (H1) and is used for making described load carrying device (L) lean forward (V) and the reclining drive device (4) of hypsokinesis (R) is as other hydraulic axis (H2), wherein, described electronic-controlled installation (20) is constructed to manipulate at the same time when promoting operating described lifting driving device (3) and described reclining drive device (4), control voltage (U1) according to described lifting driving device (3) limits the control electric current (I2) of the control valve (16) of described reclining drive device (4).
6. vehicle according to claim 5, it is characterized in that, described electronic-controlled installation (20) is constructed to manipulate at the same time when promoting operating described lifting driving device (3) and manipulation described reclining drive device (4), limits the control electric current (I1) of the control valve (15) of described lifting driving device (3) according to the control voltage (U2) of described reclining drive device (4).
7. vehicle according to any one of claim 1 to 6, it is characterized in that, described electronic-controlled installation (20) asks for the volume flow provided by described hydraulic pump (10), and affect at least one hydraulic axis (H1 according to the volume flow provided by described hydraulic pump (10) when manipulating multiple hydraulic axis (H1, H2) at the same time；H2) control valve (15；16) control electric current (I1；I2).
8. vehicle according to any one of claim 1 to 7, it is characterised in that described operating element (11,12) is made up of at least one two axle stick (13).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014119033.5 | 2014-12-18 | ||
| DE102014119033.5A DE102014119033A1 (en) | 2014-12-18 | 2014-12-18 | Industrial truck with a working hydraulics |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105712259A true CN105712259A (en) | 2016-06-29 |
| CN105712259B CN105712259B (en) | 2019-02-15 |
Family
ID=56099460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510895574.4A Active CN105712259B (en) | 2014-12-18 | 2015-12-08 | Vehicle with hydraulic system of working |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN105712259B (en) |
| DE (1) | DE102014119033A1 (en) |
| HK (1) | HK1223904A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106315469A (en) * | 2016-08-30 | 2017-01-11 | 安徽江淮银联重型工程机械有限公司 | Double lifting motor control system of forklift |
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| CN102720243A (en) * | 2012-07-12 | 2012-10-10 | 熔盛机械有限公司 | Excavator flow control method |
| CN102829008A (en) * | 2011-06-16 | 2012-12-19 | 卡特彼勒公司 | Lift system implementing velocity-based feedforward control |
| CN102852872A (en) * | 2011-07-01 | 2013-01-02 | 罗伯特·博世有限公司 | Control assembly and method for controlling multiple hydraulic consumers |
| DE102012110069A1 (en) * | 2012-10-22 | 2014-04-24 | Linde Hydraulics Gmbh & Co. Kg | Hydrostatic drive system for e.g. excavator, has pressure limiting device that is arranged in branch line for maintaining control pressure of control pressure lines by valve device |
-
2014
- 2014-12-18 DE DE102014119033.5A patent/DE102014119033A1/en active Pending
-
2015
- 2015-12-08 CN CN201510895574.4A patent/CN105712259B/en active Active
-
2016
- 2016-10-25 HK HK16112236.1A patent/HK1223904A1/en unknown
Patent Citations (10)
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|---|---|---|---|---|
| GB2102511B (en) * | 1981-07-29 | 1984-10-17 | Nissan Motor | Improved hydraulic control system for industrial vehicle |
| JPS60169342A (en) * | 1984-02-14 | 1985-09-02 | Toyoda Autom Loom Works Ltd | Hydraulic circuit for elevator device in high level working vehicle |
| JPH08150846A (en) * | 1994-11-29 | 1996-06-11 | Showa Aircraft Ind Co Ltd | Vehicle for high lift work |
| CN1165550A (en) * | 1995-09-18 | 1997-11-19 | 日立建机株式会社 | Hydraulic system |
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| CN102829008A (en) * | 2011-06-16 | 2012-12-19 | 卡特彼勒公司 | Lift system implementing velocity-based feedforward control |
| CN102852872A (en) * | 2011-07-01 | 2013-01-02 | 罗伯特·博世有限公司 | Control assembly and method for controlling multiple hydraulic consumers |
| CN102720243A (en) * | 2012-07-12 | 2012-10-10 | 熔盛机械有限公司 | Excavator flow control method |
| DE102012110069A1 (en) * | 2012-10-22 | 2014-04-24 | Linde Hydraulics Gmbh & Co. Kg | Hydrostatic drive system for e.g. excavator, has pressure limiting device that is arranged in branch line for maintaining control pressure of control pressure lines by valve device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105712259B (en) | 2019-02-15 |
| HK1223904A1 (en) | 2017-08-11 |
| DE102014119033A1 (en) | 2016-06-23 |
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