CN107816463A - The drive system of hydraulic pressure with a plurality of intake line - Google Patents
The drive system of hydraulic pressure with a plurality of intake line Download PDFInfo
- Publication number
- CN107816463A CN107816463A CN201710823199.1A CN201710823199A CN107816463A CN 107816463 A CN107816463 A CN 107816463A CN 201710823199 A CN201710823199 A CN 201710823199A CN 107816463 A CN107816463 A CN 107816463A
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- China
- Prior art keywords
- pressure
- drive system
- intake line
- hydraulic pressure
- pump
- Prior art date
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/17—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/20507—Type of prime mover
- F15B2211/20515—Electric motor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/2053—Type of pump
- F15B2211/20546—Type of pump variable capacity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/2053—Type of pump
- F15B2211/20569—Type of pump capable of working as pump and motor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/20576—Systems with pumps with multiple pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/265—Control of multiple pressure sources
- F15B2211/2658—Control of multiple pressure sources by control of the prime movers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/63—Electronic controllers
- F15B2211/6303—Electronic controllers using input signals
- F15B2211/6306—Electronic controllers using input signals representing a pressure
- F15B2211/6309—Electronic controllers using input signals representing a pressure the pressure being a pressure source supply pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/63—Electronic controllers
- F15B2211/6303—Electronic controllers using input signals
- F15B2211/6306—Electronic controllers using input signals representing a pressure
- F15B2211/6313—Electronic controllers using input signals representing a pressure the pressure being a load pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/665—Methods of control using electronic components
- F15B2211/6651—Control of the prime mover, e.g. control of the output torque or rotational speed
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The present invention relates to the drive system with the first and at least one the second intake lines and the hydraulic pressure of return line, which provided at least one actuator, actuator passes through that attached troops to a unit valve module is optional can to carry out fluid communication with least one intake line in the intake line being previously mentioned and/or return line and be connected, wherein the first intake line is connected on the first pump, wherein every second intake line（32）It is respectively connected to the second attached troops to a unit pump（22）On, wherein return line（30）It is connected to tank（12）On.According to the present invention, there is provided drive device（40）, the drive device has more output shafts（51；52）, output shaft the first or second pump with being attached troops to a unit respectively（21；22）Among rotation driving connection, wherein so setting up drive device（40；41）So that energy can pass through drive device（40；40’）In output shaft（51；52）Between exchange.
Description
Technical field
The present invention relates to a kind of drive system of the hydraulic pressure as described in the preamble by claim 1.
Background technology
A kind of drive system of hydraulic pressure is disclosed from the B1 of EP 791 754.The drive system of the hydraulic pressure possesses first
With the second intake line and return line.Multiple actuators are connected on the pipeline being previously mentioned, the actuator can pass through
The valve module attached troops to a unit carries out fluid communication with the pipeline being previously mentioned respectively and is connected.Every intake line decibel is connected to and matched somebody with somebody
On the pump of category, wherein the return line is connected on tank.
The content of the invention
The advantages of drive system of the hydraulic pressure by the present invention, is that it is special energy efficient
（energieeffizient）.A kind of this running status that is particularly suitable for use in, is pulled in the running status（ziehend）Load
Act on one of described actuator.In addition, different intake lines can be by simple mode with different stress levels
To run so that thus efficiency is also improved.
It is proposed that, there is provided a kind of drive device, the drive device has more output shafts, institute according to independent claim
State output shaft to be in the first pump attached troops to a unit or the second pump respectively among rotation driving is connected, wherein so setting up the drive
Dynamic device so that energy can be exchanged by the drive device between the output shaft.In a kind of running status（At this
One of pump is operated by motor manner described in kind running status）Thus, it is possible to which the energy provided by this pump is passed through into institute
Drive device is stated to be conducted to other pumps.This it is not being worth mentioning, with used heat（Abwärme）Form loss feelings
Carried out under condition.
The drive system of the hydraulic pressure is preferably run with pressure fluid, and the pressure fluid is most preferably liquid；Especially
It is hydraulic oil.It as long as referring to pump within the scope of application, thus should represent, mainly be provided with pump operation in time, its
In preferably can equally carry out operation by motor manner.
The favourable modification and improvement project of the present invention is illustrated in the dependent claims.
It can set, the drive device includes at least one electro-motor, and the electro-motor is respectively connected to institute
On the speed setting unit attached troops to a unit so that its rotating speed can be adjusted.In the B1 of EP 791 754, there is provided with can adjust
Dislocation volume pump.These pumps are run typically with constant rotating speed, such as with following rotating speeds, for the rotating speed
Corresponding internal combustion engine has optimal efficiency.Within the scope of the invention, proposed rotational speed regulation is utilized, it is optimal for energy
Run the drive system of the hydraulic pressure in ground.At least one electro-motor can be connected on power supply network.The power supply network
It can be connected in rechargeable batteries.The speed setting unit ratio is if be configured to frequency converter.
It can set, the output shaft is the distribution transmission mechanism of machinery（Verteilgetriebe）Part, its
Described in distribute transmission mechanism there is rotary freedom with existing output shaft as many.Pass through the distribution driver
Structure, being capable of the mechanically positive energy exchange between drive shaft.Here, very high efficiency can be realized so that energy loss
It is smaller.Furthermore it is possible to abandon the pressure regulation of at least one the second intake line.The pressure of there corresponds to the distribution
The gearratio of transmission mechanism is coupled in the pressure in first intake line.The distribution transmission mechanism is such as capable
Star transmission mechanism.The epicyclic transmission mechanism typically possesses two kinds of rotary freedoms.Can by multiple epicyclic transmission mechanisms that
This combines, for realizing two or more rotary freedoms.
It can set, the distribution transmission mechanism has unique input shaft, the input shaft and the first electricity attached troops to a unit
Dynamic motor is among rotation driving connection.Due to the distribution transmission mechanism, in addition to first electro-motor, it is not required to
Other electro-motor is wanted, for driving at least two pump.
It can set, the output shaft is respectively at the electro-motor attached troops to a unit among rotation driving is connected, wherein institute
State electro-motor to be connected on common power supply network, wherein can be at least indirectly in the electronic horse by the power supply network
Positive energy exchange between reaching.Rotating speed thus, it is possible to adjust different electro-motors independently of one another, so as to largely
The pressure in different intake lines is selected independently of one another.The power supply network can be connected to rechargeable batteries
On, wherein the energy exchange being previously mentioned is carried out indirectly by the battery.
Can set, first pump and at least one second pump be connected in series in first intake line with
Between the return line, wherein at least one the second intake line is connected two pumps in the pump being previously mentioned respectively
Between.On each pump, thus only there is small pressure drop（Druckgefälle）, the pressure drop is less than described first
Highest pressure in intake line.Corresponding, driving torque is smaller.Produce and can use especially in combination with distribution transmission mechanism
The simple torque ratio for distributing transmission mechanism to realize.
It can set, first pump has dislocation volume that is constant or can adjusting, wherein described at least one
Second pump has constant dislocation volume.For the drive system of the cheap hydraulic pressure of abnormal cost, all pumps all have perseverance
Fixed dislocation volume, wherein the pump is such as configured to external gear pump.First pump（With first pump come supply pressure highest
First intake line）There can be the dislocation volume that can be adjusted, wherein first pump is such as configured to axial plunger pump.It is logical
The regulation of the dislocation volume for correlation is crossed, can especially be adjusted described when using distribution transmission mechanism mentioned above
The ratio of pressure in first and second intake line.
It can set, the first intake line is connected on first pressure sensor, wherein the first pressure sensor
It is connected to at least one speed setting unit on control device, wherein so setting up the control device so that institute
State it is in the first intake line, can be by for described at least one come the pressure measured by means of first pressure sensor
The rotating speed of individual electro-motor is adjusted to be adjusted on previously given or can be previously given rated value.On the other hand
Should, the regulation of electronics is carried out to the pressure in first intake line, the regulation of the electronics is special within the scope of the invention
Other cost is cheap.It is preferred that using a kind of control device, the control device includes the digital computer that can be programmed.This control dress
Other control task can be used for without any problems in the range of the drive system of the hydraulic pressure by putting.
It can set with the first adjustable plate that can be adjusted（Regelblende）First pressure adjuster, wherein institute
State the first intake line by first adjustable plate with the tank to be connected, wherein so setting up the first pressure regulation
Device so that the pressure in first intake line can be adjusted to previously given by the regulation of first adjustable plate
Or can be previously given rated value on.Thereby, it is possible to quickly adjust the pressure in first intake line.Energy
Enough set location sensors, the position of first adjustable plate can be measured by means of the position sensor, wherein the position
Sensor is put in order to transmit corresponding position numerical value and is connected on the control device.Once it is described at least one the second
Intake line is assigned with single electro-motor respectively, and at least one the second intake line can be also connected respectively to by that
On the second pressure sensor attached troops to a unit, adjusted wherein analogously implementing the pressure with first intake line.
It can set, there is provided the second pressure adjuster with the second adjustable plate that can be adjusted, wherein the backflow
Pipeline is connected by second adjustable plate with the tank, wherein so setting up the second pressure adjuster so that in institute
Stating the pressure in return line can be adjusted to previously given or can be advance by the regulation of second adjustable plate
On given rated value., can be under use by the suitable regulation of the pressure nominal value for the second pressure adjuster
State energy：The energy is included in the pressure fluid to be flowed back in the return line, especially to unload second pump
Driving（Antrieb）.Therefore save on energy.
Can set, be connected to check-valves between the return line and the tank, the check-valves only allow from
Fluid stream of the tank to the return line（Fluidstrom）.Thus, it is possible to avoid the hole in the return line
（Kavitation）.
It should be appreciated that feature that is noted earlier and being illustrated further below can not only make in the combination illustrated respectively
With, and in other combinations or can be used alone, and without departing from the scope of the present invention.
Brief description of the drawings
The present invention is explained in detail below by way of accompanying drawing.Accompanying drawing is shown：
Fig. 1 presses the connection figure of drive system, actuator side the part of the hydraulic pressure of the present invention；
Fig. 2 presses the connection figure of the part of the pump side of the first embodiment, hydraulic pressure the drive system of the present invention；
Fig. 3 presses the connection figure of the part of the pump side of second of embodiment, hydraulic pressure the drive system of the present invention；With
Fig. 4 presses the connection figure of the part of the pump side of the third embodiment, hydraulic pressure the drive system of the present invention.
Reference numerals list：
The drive system of 10 hydraulic pressure（The first embodiment）
The drive system of 10 ' hydraulic pressure（Second of embodiment）
10 ' ' drive system of hydraulic pressure（The third embodiment）
11 actuators
12 tanks
13 the 3rd pressure sensors
20 control devices
21 first pumps
22 second pumps
30 return lines
31 first intake lines
32 second intake lines
33 first pressure sensors
34 second pressure sensors
40 drive devices（The first embodiment）
40 ' drive devices（Second of embodiment）
41 first electro-motors
42 second electro-motors
43 first speed setting units
44 second speed setting units
45 power supply networks
46 batteries
50 distribution transmission mechanisms
51 first output shafts
52 second output shafts
53 input shafts
60 valve modules
61 first direction valves
62 second direction valves
63 third direction valves
70 first pressure adjusters
71 first adjustable plates
72 position sensors
73 rated values-adjusting means
80 second pressure adjusters
81 second adjustable plates
83 check-valves.
Embodiment
Fig. 1 shows the drive system 10 of the hydraulic pressure by the present invention；10’；10 ' ', the connection of the part of actuator side
Figure.The drive system 10 of the hydraulic pressure；10’；10 ' ' this part is all identical in all three embodiments of the present invention
Ground is formed.The drive system 10 of the hydraulic pressure；10’；10 ' ' the first and second intake lines 31 are included；32 and return line
30.The pipeline 30 being previously mentioned；31；32 ratios are if be configured to valve body（Ventilblock）In passage, the passage is described
The valve body is passed through in the whole length of valve body.The pipeline 30 being previously mentioned；31；The end upper fluid sealing on 32 the right in Fig. 1
Ground is closed, wherein the pipeline is connected to the drive system 10 of the hydraulic pressure on opposed end；10’；10 ' ',
On the part of the pump side shown in Fig. 2 to 4.
The drive system 10 of the hydraulic pressure；10’；10 ' ' two actuators 11 are currently included, wherein can be largely
Arbitrarily select the number of the actuator 11.The actuator 11 is such as hydraulic cylinder and/or hydraulic motor.The actuator
11 pass through attached troops to a unit valve module 60 to be connected to first and second intake line 31 respectively；32 and the return line 30
On.With the valve module 60, the direction of motion and movement velocity of attached troops to a unit actuator 11 on the one hand can be adjusted, wherein being this
There is provided first direction valve 60.The first direction valve is constructed in the form of the 4/3- direction valves that can continuously adjust, institute
Stating 4/3 direction valve can electromagnetically be adjusted, and wherein it is connected on the control device 20.It is furthermore possible to adjust, Neng Gouyou
Which intake line 31；32 to the supply pressure fluid of actuator 11.It is provided with second direction valve 62 for this, described second
Direction valve is connected to the intake line 31；Between 32 and the first direction valve 61.The second direction valve 62 is configured to
2/3- direction valves, 2/3 direction valve can be adjusted electromagnetically, and wherein it is connected on the control device 20.Opened at one
In off position, first intake line 31 is connected with the first direction valve 61, wherein the institute in another position of the switch
The second intake line 32 is stated with the first direction valve 61 to be connected.It is furthermore possible to adjust, the pressure from the actuator 11
Fluid should be back to which pipeline 30；31；In 32.Third direction valve 63 is provided with for this, the third direction valve is connected
To between the intake line 31 of return line 30 or first and the first direction valve 61.The third direction valve 63 constructs
For 2/3- direction valves, the 2/3- direction valves can be adjusted electromagnetically, and wherein it is connected on the control device 20.At one
In the position of the switch, the return line 30 is connected with the first direction valve 61, wherein described in another position of the switch
First intake line 31 is connected with the first direction valve 61.
Can extraly it consider, the pressure fluid to be flowed back by the actuator 11 can be transmitted to second intake line
In 32.In addition it is to be noted, that there is the other connection flexible program of the valve module 60, the circuit flexible program have with
The identical function of valve module 60 explained earlier.For example can be every pipeline 30；31；32 attach troops to a unit two respectively to connect
2/2 direction valve adjusted continuously, 2/2 direction valve are respectively connected on the joint attached troops to a unit of the actuator 11 of correlation.
It is also noted that the 3rd pressure sensor 13, wherein being connected to pressure respectively on two joints of actuator 11
Sensor 13, the pressure sensor are connected on the control device 20 again.On the one hand can with the pressure sensor 13
Load pressure is enough measured, the actuator 11 overcomes the load pressure and worked., can corresponding to the A1 of DE 103 40 993
The discharge pressure of the pump is adjusted according to the load pressure.The pressure of backflow（Druck um Rücklauf）Especially under
It is important to state in situation, and the load effect pulled in the described situation is on actuator 11, so as to by the pressure of backflow
Energy included in power fluid is used in other places again.Such as it can determine that on the basis of corresponding return pressure, it is described
Which position third direction valve 63 should be connected in, for realizing optimal energy utilization.
It is furthermore noted that in the pipeline 30；31；Pressure in 32 is preferably different.The return line 30 has herein
There is minimum pressure, wherein the pressure highest in first intake line 31.Second intake line 32, which possesses, to be in
Pressure between extreme value noted earlier.
Fig. 2 shows the part of the pump side of the first embodiment, hydraulic pressure the drive system 10 according to the present invention
Connection figure.The drive system 10 of the hydraulic pressure possesses the first and second pumps 21；22, first and second pump currently has respectively
Constant dislocation volume, wherein they be such as configured to external gear pump.First and second pump 21；22 generally by pressure fluid
It is respectively delivered to the first or second attached troops to a unit intake line 31；In 32.But than if realize a kind of running status,
It is lower from first intake line 31 to flow to the pressure by first pump 21 for pressure fluid in the running status
In second intake line 32, so as to run first pump 21 with motor manner.Similar situation is applied to second pump
22。
First and second pump 21；22 be connected in series in first intake line 31 and the return line 30 it
Between.Second intake line 32 is connected first and second described pump 21；Between 22 so that the pressure of there is in described
Between pressure in the pressure and the return line 30 of first intake line 31.At the output shaft 51 of first pump 21 and first
Among rotation driving connection, wherein second pump 22 and the second output shaft 52 are among rotation driving is connected.
The drive device 40 includes the distribution transmission mechanism 50 of machinery, and the distribution transmission mechanism corresponds to the input pipe
Road 31；32 number has two rotary freedoms, and wherein it is such as configured to epicyclic transmission mechanism.The distribution transmission mechanism
50 except already mentioned output shaft 51；Also there is input shaft 53 outside 52.At the electro-motor 41 of input shaft 53 and first
Among rotation driving connection.On the distribution transmission mechanism 50, occurs torque balance in operation, the torque balance is led
Cause：On the input shaft 53 and in first and second described output shaft 51；Torque on 52 is each other in fixed ratio
In, the ratio is depended in the gearratio distributed in transmission mechanism 50.Thus first and second described pump 21；On 22
Pressure drop is also in corresponding ratio, so as in first and second described intake line 31；32 and the return line 30 in
Produce desired pressure classification（Druckabstufung）.
It should be noted that the input shaft 53 and first and second described output shaft 51；52 rotating speed is not in fixed ratio
In example.If first pump 21 is run with motor manner as mentioned above, then first output shaft 51
Direction of rotation with respect to regulation run in（Regelbetrieb）Direction of rotation overturn, so as to by energy by described first
Output shaft 51 passes to second output shaft 52 and/or passes to the input by the distribution transmission mechanism 50
Axle 53.
First electro-motor 41 is electrically connected on the first speed setting unit 43.First speed setting unit
43 ratios can adjust the rotating speed of the input shaft 53 by means of the frequency converter if be frequency converter.First rotating speed is adjusted
Regulating device 43 is connected to preferably as direct current network come on the power supply network 45 that constructs.The power supply network 45 is than if by whole
Device is flowed to be connected on public power network.The power supply network 45 is connected in rechargeable batteries.In first pump
In operation be previously mentioned above 21, motor manner, in fact it could happen that：The energy of feedback can not be completely by the institute of the second pump 22
Receive.In this case, the direction of rotation of the input shaft 53 is also relative to regulation operation upset, so as in a manner of generator
To run first electro-motor 41, wherein it by electric energy feedback into the power supply network 45.This energy be preferred for
The battery 46 charges.
In addition, to point out the first pressure sensor 33, can be measured described first with the first pressure sensor
Pressure in intake line 31.The first pressure sensor 33 is connected on the already mentioned control device 20, should
Control device is connected on first speed setting unit 43 again.The control device 20 is come with the type of pressure regulator
Set up.It is from the 3rd pressure sensor（Reference 13 in Fig. 1）Measured value in obtain highest load pressure.Will
The load pressure improves previously given pressure difference, for obtaining pressure nominal value.Institute is so adjusted by the control device 20
State the rotating speed of the first electro-motor 14 so that the pressure is equal to as the actual pressure measured by the first pressure sensor 31
Rated value.The control device 20 carrys out work preferably as continuous linear adjuster herein, especially as P- adjusters
Or carry out work as PD- adjusters.Corresponding adjuster is by the 20 preferred time discrete of control device
（zeitdiskret）To calculate.The control device 20 preferably includes the digital computer that can be programmed.In the described second input
Pressure in pipeline 32 is from the gearratio of the distribution transmission mechanism 50 and in first intake line 31 and return line 30
In pressure in produce.
It is also noted that the second pressure adjuster 80 and the check-valves 83.Should with the second pressure adjuster 80
Pressure in the return line 30 is brought up into defined value relative to environmental pressure.The second pressure adjuster 80
Pressure nominal value can electrically adjust, wherein the second pressure adjuster 80 is for the previously given pressure
Rated value and be connected on the control device 20.The second pressure adjuster 80 possesses can continuously adjust second
Adjustable plate 81, second adjustable plate are connected between the return line 30 and the tank 12.By means of the described second regulation
Plate 81, the pressure fluid that the tank 12 is flowed to from the return line 30 can be intercepted so that in the return line 30
Pressure rise.The check-valves 83 is connected between the tank 12 and the return line 30, and wherein it only allows from institute
State the fluid stream that tank 12 arrives the return line 30.Thus the hole that should be avoided in the return line 30.
If the control device 20 is by means of the 3rd pressure sensor（Reference 13 in Fig. 1）Measured value
The load of the drawing on one of described actuator 11 is identified, then can improve the pressure volume of the second pressure adjuster 80
Definite value so that the pressure rise in the return line 30.Thus reduce to drive the drive required for first pump 21
Dynamic power.Within the scope of the invention, the pressure nominal value being previously mentioned can also so be improved so that it is higher than described second
Pressure in intake line 31.Second pump 22 is then run with motor manner, wherein corresponding energy passes through described point
First pump 21 is conducted to transmission mechanism 50 and/or is conducted to first electro-motor 41.
Fig. 3 shows the part of the pump side of second of embodiment, hydraulic pressure the drive system 10 ' according to the present invention
Connection figure.Second of embodiment ground structure identical with the first described embodiment in addition to difference disclosed below
Make, wherein the explanation related to this with reference on Fig. 1 and 2.In Fig. 1 to 3, identical or corresponding part are provided with identical
Reference.
In second of embodiment, the second pressure adjuster and the check-valves are abandoned（It is attached in fig. 2
Icon note 80；83）, wherein the return line 30 is directly coupled on the tank 12.It is corresponding, in the return duct
Pressure in road 30 is substantially equal to the pressure in the tank 12.
In addition, the regulation of the electronics of pressure in first intake line 31 is substituted by the pressure regulation of hydraulic pressure.
Thus, it is possible to quickly adjust the pressure in first intake line 31.There is provided first pressure adjuster 70, and this first
Pressure regulator has the first adjustable plate 71 that can continuously adjust.First intake line 31 is adjusted by described first
Plate 71 is connected with the tank 12.In opening direction, first as described in the pressure-loaded in first intake line 31
Adjustable plate 71 or corresponding valve（Ventilschieber）, wherein the valve as described in spring loads in the opposite direction, described
The prestressing force of spring can be adjusted electromagnetically.Corresponding electromagnet is connected on the control device 20.
The regulation of first adjustable plate 71 can be by means of the position sensor that is connected on the control device 20
72 measure.By means of the position sensor 72 than if identifying following running statuses：Described in the running status
First adjustable plate 71 is significantly opened.These running statuses are along with higher energy loss.In order to avoid the energy damages
Consumption, the control device 20 reduce the rotating speed of first pump 21 by means of first speed setting unit 43.This causes
Following result：First adjustable plate 71 is closed, so as to which the energy loss declines.If the position sensor 72 is shown,
First adjustable plate 71 completely closes, then improves first electro-motor by the control device 20 come such degree
41 rotating speed, until first adjustable plate 71 is minimally opened.
Fig. 4 show according to the present invention the third embodiment, hydraulic pressure drive system 10 ' ' pump side part
Connection figure.The third described embodiment 10 ' ' in addition to difference disclosed below with the first described embodiment phase
Construct together, wherein the embodiment related to this with reference on Fig. 1 and 2.The identical or corresponding in Fig. 1,2 and 4
Part is provided with identical reference.
In second of embodiment, the second pressure adjuster and the check-valves are abandoned（It is attached in fig. 2
Icon note 80；82）, wherein the return line 30 is directly coupled on the tank 12.It is corresponding, in the return duct
Pressure in road 30 is substantially equal to the pressure in the tank 12.
Substitute the distribution transmission mechanism（Reference 50 in fig. 2）And it is provided with first and single second electronic horse
Up to 41；42.First and second output shaft 51；52 respectively by the electro-motor 41 of correlation；42 motor drive shaft is formed.It is described
First and second electro-motors 41；42 are respectively electrically connected to the first or second attached troops to a unit speed setting unit 43；On 43.
It is described for example as frequency converter come the first and second speed setting units 43 for constructing；44 are connected to common power supply network 45
On.The power supply network 45 is such as configured to direct current network, and wherein it is connected in rechargeable batteries 46.
As in the first described embodiment, first intake line 31 is connected to first pressure sensor
On 33, the first pressure sensor is used in the pressure controlled framework of electronics, when carrying out the pressure regulation of the electronics
The rotating speed of first electro-motor 41 is adjusted, for the pressure in first intake line 31 to be adjusted into previously given
First pressure rated value on.
In a similar way, second intake line 32 is connected on attached troops to a unit second pressure sensor 34, institute
Second sensor is stated to be connected to again on the control device 20.In the pressure controlled scope, by means of described second
Speed setting unit 44 adjusts the rotating speed of second electro-motor 42, for by pressure in second intake line 32
Power is adjusted on previously given second pressure rated value.Thus, it is possible to adjust independently of one another in first and second described input
Pipeline 31；Pressure in 32.
Once the pump 21；One of 22 are changed into motor manner operation in the pressure controlled scope, just by described
Related electro-motor 41；42 by electric energy feedback into the power supply network 45.Can by this electric energy be used for drive it is corresponding other
Electro-motor 42；41 or for being charged to the battery 46.It should be appreciated that energy stored in the battery 46 can
For driving the electro-motor 41；42.
Claims (11)
1. with the first and at least one the second intake lines（31；32）And return line（30）Hydraulic pressure drive system
（10；10’；10’’）, it is provided with least one actuator（11）, the actuator passes through attached troops to a unit valve module（60）It is optional
Can be with the intake line that is previously mentioned（31；32）In at least one intake line and/or the return line（30）Flowed
Body exchanges connection, wherein first intake line（31）It is connected to the first pump（21）On, wherein every second intake line
（32）It is respectively connected to the second attached troops to a unit pump（22）On, wherein the return line（30）It is connected to tank（12）On,
Characterized in that, it is provided with drive device（40；40’）, the drive device has more output shafts（51；52）, it is described defeated
Shaft the first or second pump with being attached troops to a unit respectively（21；22）Among rotation driving connection, wherein so setting up described
Drive device（40；40’）So that energy can pass through the drive device（40；40’）In the output shaft（51；52）Between
Exchange.
2. the drive system of the hydraulic pressure as described in claim 1（10；10’；10’’）,
Wherein described drive device（40；40’）Including at least one electro-motor（41；42）, the electro-motor connected respectively
It is connected to attached troops to a unit speed setting unit（43；44）On so that the rotating speed of the electro-motor can be adjusted.
3. the drive system of the hydraulic pressure as any one of preceding claims（10；10’）,
Wherein described output shaft（51；52）It is the distribution transmission mechanism of machinery（50）Part, wherein it is described distribution transmission
Mechanism（50）With with existing output shaft（51；52）Rotary freedom as many.
4. the drive system of the hydraulic pressure as described in returning and draw the claim 3 of claim 2（10；10’）,
Wherein described distribution transmission mechanism（50）With unique input shaft（53）, the input shaft and the first electronic horse attached troops to a unit
Reach（41）Among rotation driving connection.
5. the drive system of the hydraulic pressure as described in claim 2（10’’）,
Wherein described output shaft（51；52）With the electro-motor attached troops to a unit（41；42）It is respectively among rotation driving connection, its
Described in electro-motor（41；42）It is connected to common power supply network（45）On, wherein passing through the power supply network（45）Energy is extremely
Less can be indirectly in the electro-motor（41；42）Between exchange.
6. the drive system of the hydraulic pressure as any one of preceding claims（10；10’；10’’）,
Wherein described first with least one second pump（21；22）It is connected in series in first intake line（31）With described time
Flow tube road（30）Between, wherein at least one the second intake line（32）It is connected respectively to two pumps being previously mentioned（21；
22）Between.
7. the drive system of the hydraulic pressure as described in claim 6（10；10’；10’’）,
Wherein described first pump（21）With dislocation volume that is constant or can adjusting, wherein at least one second pump
（22）With constant dislocation volume.
8. the drive system of the hydraulic pressure as any one of claim 2 to 7（10；10’’）,
Wherein the first intake line（31）It is connected to first pressure sensor（33）On, wherein the first pressure sensor
（33）With at least one speed setting unit（43；44）It is connected to control device（20）On, wherein so setting up described
Control device（20）So that in first intake line（31）In, can be by means of the first pressure sensor（33）
The pressure of measurement can be by least one electro-motor（41；42）The regulation of rotating speed be adjusted to previously given
Or can be previously given rated value on.
9. the drive system of the hydraulic pressure as any one of preceding claims（10’）,
Which provided with the first adjustable plate that can be adjusted（71）First pressure adjuster（70）, wherein described first is defeated
Enter pipeline（31）Pass through first adjustable plate（71）With the tank（12）It is connected, is adjusted wherein so setting up the first pressure
Save device（70）So that in first intake line（31）In pressure can be by for first adjustable plate（71）Tune
Save to be adjusted on previously given or can be previously given rated value.
10. the drive system of the hydraulic pressure as any one of preceding claims（10）,
Which provided with the second adjustable plate that can be adjusted（81）Second pressure adjuster（80）, wherein the return duct
Road（30）Pass through second adjustable plate（81）With the tank（12）It is connected, wherein so setting up the second pressure adjuster
（80）So that in the return line（30）In pressure can be by for second adjustable plate（81）Regulation adjust
Onto previously given or can be previously given rated value.
11. the drive system of the hydraulic pressure as described in claim 10,
Wherein in the return line（30）With the tank（12）Between be connected to check-valves（83）, the check-valves only allow from
The tank（12）To the return line（30）Fluid stream.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016217541.6A DE102016217541A1 (en) | 2016-09-14 | 2016-09-14 | Hydraulic drive system with several supply lines |
| DE102016217541.6 | 2016-09-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107816463A true CN107816463A (en) | 2018-03-20 |
| CN107816463B CN107816463B (en) | 2021-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710823199.1A Active CN107816463B (en) | 2016-09-14 | 2017-09-13 | Hydraulic drive system with multiple supply lines |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107816463B (en) |
| DE (1) | DE102016217541A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3597934A1 (en) * | 2018-06-15 | 2020-01-22 | Dana Italia S.r.L. | Hydraulic circuit |
| US12000112B2 (en) | 2018-10-24 | 2024-06-04 | Volvo Construction Equipment Ab | Method for controlling a hydraulic system of a working machine |
| CN112912631B (en) | 2018-10-24 | 2023-05-05 | 沃尔沃建筑设备公司 | Hydraulic system for a work machine |
| CN109519427A (en) * | 2018-12-11 | 2019-03-26 | 山东交通学院 | A kind of shield excavation machine hydraulic propelling system |
| EP3959383B1 (en) * | 2019-04-26 | 2023-06-07 | Volvo Construction Equipment AB | A hydraulic system and a method for controlling a hydraulic system of a working machine |
| US11846086B2 (en) | 2019-12-12 | 2023-12-19 | Volvo Construction Equipment Ab | Hydraulic system and a method for controlling a hydraulic system of a working machine |
| FI129037B (en) * | 2020-03-24 | 2021-05-31 | Lappeenrannan Lahden Teknillinen Yliopisto Lut | A load sensing control system and a method for controlling a hydraulic system |
| DE102021210054A1 (en) | 2021-09-13 | 2023-03-16 | Robert Bosch Gesellschaft mit beschränkter Haftung | Energy efficient electric-hydraulic control arrangement |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN107816463B (en) | 2021-12-10 |
| DE102016217541A1 (en) | 2018-03-15 |
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