CN106246620A - Control block, with the hydrostatic driving means controlling block and the method being used for the vehicle with hydrostatic driving means - Google Patents
Control block, with the hydrostatic driving means controlling block and the method being used for the vehicle with hydrostatic driving means Download PDFInfo
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- CN106246620A CN106246620A CN201610400434.XA CN201610400434A CN106246620A CN 106246620 A CN106246620 A CN 106246620A CN 201610400434 A CN201610400434 A CN 201610400434A CN 106246620 A CN106246620 A CN 106246620A
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- Prior art keywords
- valve
- pressure
- hydraulic press
- control block
- vehicle
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/38—Control of exclusively fluid gearing
- F16H61/40—Control of exclusively fluid gearing hydrostatic
- F16H61/4035—Control of circuit flow
-
- 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
-
- 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
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
-
- 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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/38—Control of exclusively fluid gearing
- F16H61/40—Control of exclusively fluid gearing hydrostatic
- F16H61/4157—Control of braking, e.g. preventing pump over-speeding when motor acts as a pump
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/38—Control of exclusively fluid gearing
- F16H61/40—Control of exclusively fluid gearing hydrostatic
- F16H61/46—Automatic regulation in accordance with output requirements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/38—Control of exclusively fluid gearing
- F16H61/40—Control of exclusively fluid gearing hydrostatic
- F16H61/46—Automatic regulation in accordance with output requirements
- F16H61/478—Automatic regulation in accordance with output requirements for preventing overload, e.g. high pressure limitation
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Fluid-Pressure Circuits (AREA)
- Auxiliary Drives, Propulsion Controls, And Safety Devices (AREA)
- Operation Control Of Excavators (AREA)
Abstract
Being disclosed that the control block for hydrostatic driving means, two hydraulic presses can be connected to this control block, this hydraulic press constructs the performance loop of hydraulic pressure through controlling block.Here, described hydraulic press can decouple through controlling block, and the fluid volumetric flow at outlet side of described hydraulic press can intercept through this pressure valve.Additionally, hydrostatic driving means is provided with such control block, this control block has two hydraulic presses.For with in the method for the vehicle of such hydrostatic driving means, it is possible to drawing valve is opened, for one of hydraulic press described in short circuit in the case of hydraulic press decouples.Additionally, in the process, it is possible to one hydraulic press is bearing on another hydraulic press and extraly pressure medium is sent to pressure medium groove.Furthermore it is possible to be additionally provided that, hydraulic press is decoupled each other and one hydraulic press through pressure valve by pressure medium volume flow fully towards storage tank transmission.
Description
Technical field
The present invention relates to a kind of control block as described in the preamble according to claim 1.The invention still further relates to control
The hydrostatic driving means of clamp dog and for the method with the vehicle of hydrostatic driving means.
Background technology
The hydrostatic driving means of agri-vehicle is become known for from document US 3 913 453.This driving means has
Having hydraulic pump, this hydraulic pump defines the loop of the hydraulic pressure of Guan Bi through direction valve with the fluidly parallel hydraulic motor arranged.
It is disposed with pressure valve in the flow path of the outlet side in this loop.This pressure valve is fluidly arranged in hydraulic motor in concatenation
And between hydraulic pump and cause the agri-vehicle driven by hydrostatic driving means propelling run
(Schiebebetrieb) deceleration in.
Summary of the invention
The targeted task of the present invention is, sets up and controls block, and this control block is real with the cost in terms of little device technique
Now use the braking action that can finely set of the vehicle of this control block and/or realize the diesel motor by driving described vehicle
It is protected from high drag torque.
The present invention in terms of hydrostatic driving means for identical task.Additionally, the task that the present invention is targeted
It is, sets up the method for hydrostatic driving means, utilize the method, enable in particular to use described driving means
The diesel motor of vehicle is from high drag torque.
Task in terms of controlling block solves, in terms of hydrostatic driving means according to the feature of claim 1
Task solves according to claim 13, and the task in terms of method solves according to the feature of claim 14.
The favourable modification of the present invention is the content of dependent claims.
It is provided with control block or the hydrostatic driving means for vehicle, this vehicle especially agri-vehicle, especially
It is rail vehicle, the vehicle being especially connected with track.Can connect at control block especially can by diesel motor by motor
The first hydraulic press driven and such second hydraulic press, utilize this second hydraulic press that at least one of vehicle can be driven to take turns or
Wheels.Described hydraulic press can be connected through controlling two flow paths of block in the performance loop of hydraulic pressure.Advantageously, first
Hydraulic press can be from the second hydraulic press hydraulically through controlling block decoupling.Alternatively or additionally, advantageously, from
The fluid volumetric flow of the outlet side of the second hydraulic press or back through control block have access in optional manner can set
Fixed pressure valve can intercept with the pressure that should be able to set mutually.
This solution has the advantage that, in the simple mode in device technique aspect ground, is refluxed by interception, warp
Excess pressure valve is obtained in that the braking action that can finely set of the second hydraulic press.Additionally, by decoupling from the second hydraulic press
First hydraulic press, the diesel motor of driving first hydraulic press of vehicle can be protected against possible too high drag torque.
Thus, control block causes the deceleration of stepless hydraulic pressure of travel speed of vehicle (such as at descent run by described pressure valve
In), and need not at this be bearing on diesel motor hydrostatic driving means.Because do not carry out on diesel motor or
Less support, then this diesel motor such as can be used in through alternating current electric organ produce electric current because such as its
Rotating speed can be maintained in the narrowest scope, especially 1700 revs/min +/-3 %.By controlling the braking that can set of block
Effect, it is possible to the most at random running brake of the concatenation of off-load vehicle, this abrasion causing reduction and less operation
Expense.These advantages controlling block become original realization by little piping cost with flexible pipe.Additionally, control block due in device skill
Simply designing and there is little structure space demand in terms of art.
In another design of the present invention, pressure valve at least can be connected at the sidepiece of the second hydraulic press or control
At the working joint of clamp dog, this working joint is for connecting at least one sidepiece of the second hydraulic press.Pressure valve also be able to
A few flow path branch.Pressure valve refers to the especially ratio ground of pre-control in terms of device technique simply and can regulate
Pressure limit valve.Utilize described pressure valve, it is possible to control from the second hydraulic press towards pressure medium groove or the connection of storage tank.
Advantageously, the presetting valve of the pressure valve of pre-control can be regulated for setting preset pressure by the most electric.Thus, pressure valve
Braking action can simply by regulate described presetting valve and set.Then, preset pressure can be at pressure limit valve
With the spring force mating reaction of valve spring on the closing direction of valve element.Preferably, the valve slider of presetting valve can be by pressure medium
Loading on closing direction, this pressure medium is taken particularly through one or two nozzle in the upstream of pressure valve.Opening
On direction, it can be utilized tensile force to load by the executor of electricity.This point causes fail-safe function, because when having a power failure, and valve
Element is loaded by pressure medium on closing direction.
Fluidly be parallel to presetting valve, it is possible to pressure limit valve is set at pressure valve, this pressure limit valve can directly to
Pressure medium groove to tune to open.Pressure limit valve can connect through another nozzle between two nozzles.Here, be used for
The pressure of opening of pressure limit valve is preferably calculated as about 420 bar.
Pressure valve can be connected with pressure medium groove through check-valves, and wherein, check-valves is towards pressure medium groove
Direction is opened and closing force can be utilized to load through valve spring in the opposite direction, and this closing force can have about 5
The pressure equivalent of bar.
Pressure medium connection between pressure valve and the second hydraulic press is preferably able to through sequence valve control.Thus,
Pressure valve can be accessed in optional manner in the simple mode in ground in terms of device technique.Additionally, pressure valve can connect
At two sidepieces of the second hydraulic press, wherein, can order of placement valve between each sidepiece and pressure valve
(Zuschaltventil).Also be able to it is considered that, two sidepieces are connected with pressure valve through common sequence valve.Sequence valve energy
Enough in terms of device technique, it is collectively coupled to pressure valve at outlet side simply, thus reduces piping cost.
Corresponding sequence valve preferably electricity ground or the most hydraulically can be by simply in terms of device technique
Actuate for tuning to open the pressure medium connection being tuned in other words between the second hydraulic press and the corresponding sidepiece of pressure valve.Favorably
Ground, described sequence valve or corresponding sequence valve are configured to 2 road inserted valves, and such as it is at the data page RD of Bosch Rexroth AG
Disclosed in 21010.Here, inserted valve can unlock preferable through enabling in particular to electric the direction seat valve actuated, in order to tune to open
Sequence valve.Inserted valve preferably has seat valve body, this seat valve body on closing direction through the first acting surface through direction seat valve
In optional manner can the pressure of the bigger sidepiece of pressure by the pressure medium of pressure medium groove or by the second hydraulic press
Coated by dielectric.Here, the bigger sidepiece of the pressure of the second hydraulic press through reversal valve connection (melden) to direction seat valve.Plug-in mounting
The seat valve body of valve can be loaded by the spring force of valve spring extraly and make through second in the direction of the opening on closing direction
With face utilize the connection of the second hydraulic press have sequence valve sidepiece pressure medium load.Through the preferably less than second acting surface
The 3rd acting surface, pressure medium can by sequence valve outlet side load.
The seat valve body of valve element or the pressure valve that is designed as pressure limit valve the most in the direction of the opening can be by pressure
Medium adds towards the pressure medium connection of pressure medium groove to tune to open in the downstream of described sequence valve or two sequence valves
Carry.Additionally, seat valve body can be loaded by the spring force of valve spring and the preset pressure that can set on closing direction.For pressing
The pressure medium of the input side of the presetting valve of the power valve preferably upstream in pressure valve and the downstream at sequence valve are drawn.
In another design of the present invention, it is possible to traction is set in the simple mode in ground in terms of device technique and closes
Disconnected.To this end, arrange drawing valve, this drawing valve is utilized to be connected or short circuit by the joint of the first hydraulic press.Drawing valve is such as
Refer to 2 road inserted valves.It can be considered that, this drawing valve constructs on spending with advantageously corresponding approximately to sequence valve.Preferably
Ground, inserted valve can unlock through the direction seat valve enabling in particular to actuate electricly, it is possible to tune to open drawing valve.Inserted valve can
Having seat valve body, this seat valve body can be by pressure medium groove through direction seat valve through the first acting surface on closing direction
Pressure medium or loaded by the pressure medium of the bigger sidepiece of the pressure of the second hydraulic press.Preferably, the pressure of the second hydraulic press
Bigger sidepiece is communicated to direction seat valve through reversal valve.The seat valve body of inserted valve can be extraly by valve spring on closing direction
Spring force load and one of the sidepiece utilizing the first hydraulic press in the direction of the opening through the second acting surface is (the most such
Sidepiece, when the backward going of vehicle, pressure medium is sent in this sidepiece) pressure medium load.Can be less than the second effect
3rd acting surface in face can utilize the most other sidepiece (namely such sidepiece of the preferably first hydraulic press, in order to
Front traveling and pressure medium is transmitted in this sidepiece) pressure medium load.
In order to hydraulic press is decoupled each other, it is possible to simply on the road of flowing accordingly of performance loop in terms of device technique
Footpath is arranged for the first hydraulic press and the second hydraulic press are decoupled and the coupling valve of coupling.Utilize and couple valve accordingly, it is possible to
Corresponding flow path is tuned to open and calls in.
As an alternative it can be considered that, also construct for by first and second hydraulic presses decoupling and coupling be total to
Same coupling valve.
Corresponding coupling valve preferably or the most hydraulically can be actuated for tuning to open and calling in corresponding electricly
Flow path.Corresponding coupling valve such as refers to 2 road inserted valves, and it such as can design corresponding to sequence valve.Here,
Inserted valve can unlock preferable through enabling in particular to electric the direction seat valve actuated, and it is possible to tune to open described coupling valve.Insert
The seat valve body of dress valve can be by the pressure of pressure medium groove through direction seat valve through the first acting surface on closing direction
Power media or loaded by the pressure medium of the bigger sidepiece of the pressure of the second hydraulic press.Preferably, the pressure of the second hydraulic press is relatively
Big sidepiece is communicated to direction seat valve through reversal valve.The seat valve body of inserted valve be preferably able on closing direction extraly by
The spring force of valve spring loads and utilizes the connection of the first hydraulic press to have through the second acting surface in the direction of the opening and maybe can connect
The pressure medium being connected to couple the sidepiece of valve loads.The 3rd acting surface through the preferably smaller than second acting surface, it is possible to load the
The connection of two hydraulic presses has the pressure medium of the sidepiece of coupling valve.
In a preferred design of the present invention, drawing valve can be connected at corresponding flow path accordingly
The coupling valve being arranged in this flow path and the first hydraulic press between.
It can be considered that, corresponding sequence valve is connected to be arranged in this flowing road accordingly at corresponding flow path
Between coupling valve and the second hydraulic press in footpath.
In another design of the present invention, supply pump can with flow path at least through at least one supply valve
One of be connected.Through this, in a straightforward manner, it is possible to the pressure medium discharged through pressure valve is supplemented and is sent to performance loop
In.
Preferably, when less than specific pressure, supply valve tunes to open the pressure medium between supply pump and flow path
Connecting, supply valve is connected to this flow path.In remaining situation, this supply valve preferably closes.In a preferred manner, middle
Supply valve is fluidly arranged between supply valve and supply pump.Hydraulic accumulator, especially bladder accumulator can supply in centre
To being connected between valve and supply valve control block or arrange hereinto.
Here, hydraulic accumulator ensure that quick opening time and when the beginning of supply valve dynamic pressure be situated between
Matter supplies.
In another design of the present invention, it is possible to supply valve between corresponding coupling valve and the second hydraulic press
It is connected to corresponding flow path.Supply valve can in terms of device technique simply input side jointly with middle supply valve
It is connected.Thereby, it is possible to supplied to two flow paths by pressure medium, and hydraulic accumulator can be used in two supplies
Valve.Corresponding to supply valve, middle supply valve also tunes to open in supply pump and two confessions when less than a kind of or described specific pressure
Connect to the pressure medium between valve or at least one supply valve and can close in remaining situation.When a dozen of supply valve
When opening, supply pump is preferably able to swing and automatically swing out, the most especially in braking procedure, and the second hydraulic pressure function
Enough pressure mediums supply.
Supply valve or corresponding supply valve and/or middle supply valve preferably refer to 2 road inserted valves, referring also to drawing above
Data page.The inserted valve of supply valve or corresponding supply valve preferably has seat valve body, and this seat valve body is at closing direction
On can be had the pressure medium of sidepiece of supply valve or corresponding supply valve by the connection of the second hydraulic press through the first acting surface
Load.The seat valve body of the inserted valve of supply valve or corresponding supply valve can also be extraly by the bullet of valve spring on closing direction
Spring force loads.In the direction of the opening, seat valve body can utilize the connection of the second hydraulic press to have described supply through the second acting surface
The pressure medium of the sidepiece of valve or corresponding supply valve loads.
Through the 3rd acting surface of the preferably smaller than second acting surface, then can load the pressure medium of supply pump, when
When in existing middle supply valve, this is opened.Preferably, corresponding supply valve is opened, when connecting the stream having corresponding supply valve
When the pressure in dynamic path is calculated as less than or equal to 35 bar.
2 road inserted valves of middle supply valve can similarly have seat valve body, this seat valve body on closing direction through the
One acting surface can be loaded by the pressure medium of supply valve or the upstream of multiple supply valve and/or can be by the pressure of hydraulic accumulator
Power media loads.The seat valve body of the inserted valve of middle supply valve preferably on closing direction extraly by the spring force energy of valve spring
The pressure of enough upstreams loading and can utilizing through the second acting surface in the direction of the opening supply valve or multiple supply valve is situated between
Matter loads and/or can be loaded by the pressure medium of hydraulic accumulator.Through the 3rd acting surface of the second acting surface can be more than,
The pressure medium of supply pump can be loaded in the direction of the opening.
Such as connect have pressure limit valve in the downstream of supply pump and preferably upstream at centre supply valve, this pressure limit
Supply pressure is such as limited to 35 bar by valve processed.
In 2 described road inserted valves, the first acting surface can correspondence second and the summation of the 3rd acting surface.
Being preferably provided with chiller, the cooling of this chiller is towards the pressure medium of pressure medium groove flowing.Here,
Chiller is especially arranged in the downstream of pressure valve, the most in a straightforward manner when pressure valve is braked extraly by pressure
Medium cools down.Chiller such as has the fan driven by the motor of hydraulic pressure, and wherein, furthermore motor can be (outstanding by hydraulic press
It is with axial piston regulation pump as form) drive.
It is furthermore possible to be provided that, especially between the second hydraulic press and corresponding coupling valve, it is possible to by pressure transducer
It is connected at corresponding flow path.
During at this advantageously it is possible that pressure at the sidepiece at the second hydraulic press is the most almost identical, in order to make
Dynamic, corresponding sequence valve and pressure valve are tuned to open.
Preferably, the hydrostatic driving means with regulating block of one of aforementioned aspect is provided with first and
Two hydraulic presses.Hydraulic press such as refers to the axial piston regulation pump that can regulate to electronic ratio.Purge valve can be set, should
Purge valve preferably constructs in the shell of the second hydraulic press.Second hydraulic press in another design of the present invention through third wheel
Group drive mechanism (particularly through clutch) can be connected to wheels.First hydraulic press can be through pump dispenser drive mechanism
(especially also passing through clutch) is connected to diesel motor.Diesel motor (particularly through clutch) can be connected to generating again
Machine.
For with the vehicle according to the hydrostatic driving means one of aforementioned aspect Suo Shu according to the present invention
Method in, it is possible to being provided that, when starting vehicle, coupling valve, one or two sequence valve and drawing valve are (especially in nothing
During electric current) open.
Alternatively or additionally can be provided that, when travelling or work travels or turns traveling, sequentially
Valve and drawing valve are energized and/or close.Here, coupling valve can be opened.
Additionally, alternatively or additionally can be provided that, when traction turns off, especially in the traveling of vehicle
Or work travels or when turning traveling (berstellfahrt), drawing valve is not powered on and/or opens.Here, coupling valve can
Guan Bi.
Additionally, alternatively or additionally it can be considered that, travelling or work travels or when turning traveling,
The sequence valve of the current outlet side being connected to the second hydraulic press is opened with being especially not powered on, wherein, and other sequence valve
It is energized with drawing valve and/or closes, furthermore wherein pressure valve being opened.Here, coupling valve can be opened.
Additionally, alternatively or additionally can be provided that, when travelling or work travels or turns traveling,
The sequence valve of the current outlet side being connected to the second hydraulic press is not powered on and/or opens, other sequence valve and drawing valve quilt
Energising and/or Guan Bi, pressure valve is opened and extraly will coupling valve energising and/or Guan Bi.
Preferably, be provided that in the process, traction turn off time, especially while ground or essentially simultaneously, volume
The running brake especially concatenated of vehicle is actuated in other places.
When traveling, work travel or turn traveling, it is possible to when at the second hydraulic press in the case of sequence valve is opened
Pressure on two sidepieces almost identical or identical time then this pressure valve is opened.Preferably, pressure valve and corresponding order
Valve is simultaneously actuated.
Accompanying drawing explanation
A preferred embodiment of the present invention explained in detail by accompanying drawing by means of unique signal below.This accompanying drawing 1 be
The layout of hydraulic pressure shows the hydrostatic driving means for vehicle.
Detailed description of the invention
According to described unique accompanying drawing, the hydrostatic driving means 1 of the vehicle for being connected with track has control
Block 2, the first hydraulic press 4 and the second hydraulic press 6 be connected to this control block, and described hydraulic press is respectively configured to lead to the axial of pendulum
Piston regulation pump.First hydraulic press 4 is connected with diesel motor 10 through pump dispenser drive mechanism 8, and this diesel motor is extraly
Electromotor 12 can be driven.Second hydraulic press 6 is connected with the wheels 16 of vehicle through wheels drive mechanism 14.For the first hydraulic pressure
Machine 4, is controlling at block 2, is being provided with working joint A1 and working joint B1.In order to connect the second hydraulic press, set at control block 2
It is equipped with working joint A2 and working joint B2.The first flow path 18 is constructed between working joint A1 and A2, and in work
Make to construct between joint B1 and B2 second flow path 20.Flow path 18,20 defines work together with hydraulic press 4,6 and returns
Road.First hydraulic press 4 moves forward for vehicle and 22 pressure medium is sent to the first flow path 18, and the first hydraulic pressure
Pressure medium is sent to second flow path 20 for the backward going 24 of vehicle by machine 4.
In order to intercept the fluid volumetric flow of the outlet side of the second hydraulic press 6, be provided with that have access in optional manner,
The pressure valve 26 that can set.This pressure valve can be connected and through with second flow path 20 through the first sequence valve 28
Two sequence valves 30 can be connected with the first flow path 18.In order to be decoupled from performance loop by the first hydraulic press 4, it is provided with first
With the second coupling valve 32,34.First coupling valve 32 is arranged in second flow path 20 at this, and the second coupling valve 34 is arranged
In the first flow path, and they can tune to open the corresponding pressure medium connection in corresponding flow path and adjust
Enter.
Additionally, be provided with drawing valve 36, in order to working joint A1 with B1 for the first hydraulic press 4 is connected.Drawing valve
36 are connected to couple the first flow path 18 between valve 34 at working joint A1 and second and be connected to connect in work at this
Second flow path 20 between head B1 and first coupling valve 32.
In order to pressure medium was especially supplied to the first flow path or the second flowing road when pressure valve 26 is braked
Footpath 18,20, is provided with supply pump 38.This supply pump can be connected to second flow path 20 and warp through the first supply valve 40
Cross the second supply valve 42 and can be connected to the first flow path 18.On the flowing road between supply pump 38 and supply valve 40 and 42
Footpath is disposed with middle supply valve 44.Additionally, be provided with hydraulic accumulator 46, this hydraulic accumulator be connected to control block 2 and
It is fluidly connected between middle supply valve 44 and supply valve 40 and 42.Hydraulic accumulator 46 such as has the volume of 10 l.This
Outward, branching out pressure limit valve 47 between middle supply valve 44 and supply pump 38, this pressure limit valve is supplying pump pressure
The outlet side of 38 is defined, and especially limits to 35 bar.
Sequence valve 28,30, coupling valve 32,34 and drawing valve 36 refer to 2 road inserted valves, they substantially the same ground structures
Make and explain by the first coupling valve 32 below.This coupling valve 32 has seat valve body 48, and this seat valve body is on closing direction
Pressure through the bigger sidepiece of first acting surface 50 pressure by the pressure medium of pressure medium groove 52 or by the second hydraulic press 6
Power media loads.The pressure medium whether using pressure medium groove or the pressure medium using the bigger sidepiece of pressure load the
One acting surface be through can be electric the direction seat valve 54 actuated select.Direction seat valve at input side through reversal valve 56
Pressure medium is supplied to the sidepiece that the pressure of the second hydraulic press is bigger.In the state being not powered on of direction seat valve 54, by
One acting surface 50 is towards pressure medium groove 52 off-load.Additionally, seat valve body 48 has the second acting surface 58 and the 3rd work of annular
With face 60, they overcome the spring force of valve spring to work the most in the direction of the opening.
Pressure valve 26 is connected with pressure medium groove 52 with chiller 64 through check-valves 62 at outlet side.With pressure valve
The valve element that seat valve body 66 is form of 26 can be loaded in the downstream of sequence valve 28,30 by pressure medium in the direction of the opening.
Pressure valve 26 is configured to pressure limit valve, arranges presetting valve 68 to this pressure limit valve.This presetting valve is in the input of pressure valve 26
Side draw pressure medium and control are led to the pressure medium of pressure medium groove 52 and are connected.The pressure medium taken is in Guan Bi
On direction, the extra spring force in valve spring is loaded onto the seat valve body 66 of pressure valve 26.Fluidly it is parallel to presetting valve 68, at pressure
Being provided with pressure limit valve 70 at valve 26, this pressure limit valve is connected to the upstream of pressure valve 26 through two nozzles.Presetting valve
Furthermore 68 are connected between the two nozzle through another nozzle.Additionally, the work of effect on closing direction of closed shape 66
Can load with pressure medium through nozzle with face, at pressure limit valve 70 and the first of the upstream being arranged in pressure limit valve 70
This pressure medium is taken between nozzle.
Additionally, be provided with purge valve 72, this purge valve is connected to the sidepiece of the second hydraulic press 6 and controls to lead to pressure Jie
The pressure medium of matter groove 52 connects.Here, purge valve 72 can construct in the shell of the second hydraulic press 6.
Can measure in the first flow path 18 or second flow path 20 through the first and second pressure transducers 74,76
In pressure.
The working method of hydrostatic driving means has been explained below.
The startup of vehicle:
Startup have employed hydrostatic driving means 1 vehicle, be especially connected with track vehicle time, sequence valve 28,30
Opening when no current with coupling valve 32,34 and drawing valve 36, thus achieve in corresponding valve is the most through-flow.Structure
Pressure valve 26 for the pressure limit valve of proportion expression has negative characteristic, and this causes fail-safe function.Maximum opens
Pressure limits through the pressure limit valve 70 of pressure valve 26 and is such as calculated as 420 bar, and this is opened pressure and is automatically set, when
During presetting valve 68 no power of pressure valve 26.In turn, open pressure proportional in presetting valve 68 executor's or magnet is logical
Electricity.
If vehicle especially especially carries out with travel direction forward travelling without the gradient and the normal of gradient:
The most under steam, starting or put into diesel motor 6, wherein, the first hydraulic press 4 can turning with diesel motor 10 as pump
Speed rotates.Simultaneously or at about, sequence valve 28,30 and drawing valve 36 are energized, thus close these sequence valves and
Drawing valve.Here, hydraulic press 4 somewhat swings out as pump and by pressure medium towards the second hydraulic press 6 as motor
Exclusion.Then, this second hydraulic press swings out.First hydraulic press 4 pivots away the most further, and the second hydraulic pressure
Then torque is given to wheels 16 further by machine 6 through wheels drive mechanism 14.Vehicle is leaveed.If the first hydraulic press 4 enters one
Step swings out, then vehicle further speeds up.Travel speed depends on rotating speed and first hydraulic press 4 and of diesel motor 10
The angle of oscillation of two hydraulic presses 6.If backward going wanted by vehicle, then the first hydraulic press 4 and the second hydraulic press 6 are all towards contrary side
To swinging out.
If the vehicle turned off with traction is especially especially carried out with travel direction forward without the gradient and gradient
Normal traveling:
Then when the traveling turned off with traction or work travel, especially should block rubble or migration when vehicle as rail vehicle
When track and sleeper, it is possible to produce such situation, exist in this case for people and/or for the danger of vehicle.Vehicle
First travelling with the sequence valve 28,30 of energising and the drawing valve 36 of energising, these sequence valves and drawing valve thus close.Coupling valve
32,34 open.Such as when danger, trigger the function that traction turns off.Through this, the energising terminating drawing valve 36 is the most no longer given
The energizing magnets of drawing valve 36, thus open drawing valve 36 or its logical valve.Through this, apply the first hydraulic press 4 as pump
Suction side and being on the pressure side shorted, thus application is no longer able to transmit torque to wheels as the second hydraulic press 6 of motor passes
Motivation structure 14.Utilize and actuate the function that traction disconnects, the most simultaneously activate the running brake of the concatenation of vehicle.
Additionally can be provided that in opening of drawing valve 36, Guan Bi coupling valve 32,34.
If vehicle especially with travel direction forward especially descend hillside fields particular with on diesel motor 10 supportedly
Travel:
If vehicle such as descending, then start to promote vehicle mass, thus the second hydraulic press 6 is as pump and the first hydraulic press 4
Working as motor, this first hydraulic press is bearing on diesel motor 10 through pump dispenser drive mechanism 8.Depend on hydraulic pressure
The angle of oscillation of machine 4,6, vehicle is bearing on diesel motor 10 more or less.Then, in reverse travel direction, hydraulic press
4 and 6 correspondingly swing out towards contrary direction.
If vehicle especially with travel direction forward especially descend hillside fields particular with the supporting on diesel motor 10 with
And the deceleration ground of stepless hydraulic pressure travels simultaneously:
Described vehicle the most such as descends hillside fields to travel.If the pressure of two sidepieces of the second hydraulic press 6 is almost identical
(this pressure is measured by pressure transducer 74,76), then, in the vehicle also travelled with little speed, change following operation simultaneously
State.Terminating the energising of sequence valve 28, wherein, this sequence valve (logical valve) is opened.Pressure valve 26, the magnet of the most presetting valve 68
The most maximally it is energized.Through this, pressure valve 26 is maximally opened.In the volume flow of outlet side of hydraulic press 6 or reflux this
Time allocated.A part is flowed through sequence valve 28, pressure valve 26 and check-valves 62 to pressure medium groove 52 and is filled by cooling
Put 64 coolings.Another part flows towards the first hydraulic press 4, and this first hydraulic press is applied as motor, wherein, opens coupling valve
32、34.Here, hydraulic press 4 is bearing on diesel motor 10 through pump dispenser drive mechanism 8.If at working joint A1 and
Pressure between A2 declines particularly less than 35 bar, then supply valve 42 and middle supply valve 44 are opened, thus it is automatic to supply pump 38
Swing out and utilize pressure medium supply to be applied as the second hydraulic press 6 of pump.Here, hydraulic accumulator 46 guarantees
Dynamic pressure medium supply during the beginning of short opening time and supply valve 42.In turn, ratio is outstanding in pressure valve 26
The size of the energising of its presetting valve 68, it is possible to infinitely reduce the supporting on diesel motor 10.
Owing to controlling the symmetrical structure of block 2, the supporting on diesel motor 10 and the deceleration of stepless hydraulic pressure simultaneously
Also feasible in reverse travel direction.
By the pressure medium that flow towards pressure medium groove 52 through pressure valve 26 of cooling, it is to avoid especially locally
Overheated risk.Such as, by avoiding according to inventive drive means: all of pressure medium for braking retains
In the performance loop of the hydraulic pressure of Guan Bi.Alternatively scheme, pressure medium at least some of towards pressure medium groove 52
Guide.
If vehicle especially especially descends hillside fields particular with the deceleration of stepless hydraulic pressure with travel direction forward and not
Supportedly traveling with on diesel motor 10:
Described vehicle descends hillside fields to travel as described above.If it is almost identical, then with 76 pressure obtained by pressure transducer 74
For the vehicle also travelled with little speed, break sequence valve 28 and the energising of drawing valve 36, thus by this sequence valve with
And drawing valve opens.Additionally, coupling valve 32,34 energising, thus, these couplings valve (its logical valve) are closed.
Pressure valve 26 is maximally energized, thus this pressure valve is fully open.First hydraulic press 4 then backswing and
Zero stroke (Nullhub) runs.If the pressure between working joint A1 and A2 drops below 35 bar, then supply
Valve 42 and middle supply valve 44 are opened, thus supply pump 38 and automatically swing out and utilize pressure medium supply to transport as pump
Second hydraulic press 6 of row.Thus, between hydraulic press 4 and 6, no longer there is the loop of Guan Bi, but there is the loop opened.Ratio
Vehicle, in the energising of pressure valve 26, then can infinitely be slowed down, and not be bearing on diesel motor 10 at this this vehicle by example.
Pressure medium then flows through sequence valve 28, pressure valve, check-valves 62 and cooled flows through chiller 64 to storage tank.Diesel oil horse
Reach 10 to be then parallel to this method of operation and also undertake other function, such as, drive the alternating current for producing electric current
Electric organ.By controlling the symmetrical structure of block 2, even if also achieving this method of operation in reverse travel direction.
Disclosing the control block for hydrostatic driving means, two hydraulic presses can be connected to this control block, should
Hydraulic press constructs the performance loop of hydraulic pressure through controlling block.Here, described hydraulic press can decouple through controlling block, and institute
The fluid volumetric flow at outlet side stating hydraulic press can intercept through this pressure valve.Additionally, hydrostatic driving means sets
Having such control block, this control block has two hydraulic presses.For the car with such hydrostatic driving means
Method in, it is possible to hydraulic press decouple in the case of drawing valve is opened, for one of hydraulic press described in short circuit.This
Outward, in the process, it is possible to one hydraulic press is bearing on another hydraulic press and extraly by pressure medium
It is sent to pressure medium groove.Furthermore it is possible to be additionally provided that, hydraulic press is decoupled each other and one hydraulic press warp
Excess pressure valve by pressure medium volume flow fully towards storage tank transmission.
Reference list
1 hydrostatic driving means
2 control block
4 first hydraulic presses
6 second hydraulic presses
8 pump dispenser drive mechanisms
10 diesel motor
12 electromotors
14 wheels drive mechanisms
16 wheels
Al, A2, B1, B2 working joint
18 first flow paths
20 second flow paths
22 move forward
24 travel backward
26 pressure valve
28 first sequence valves
30 second sequence valves
32 first coupling valves
34 second coupling valves
36 drawing valves
38 supply pumps
40 supply valves
42 supply valves
44 middle supply valves
46 hydraulic accumulators
47 pressure limit valves
48 seat valve bodies
50 first acting surfaces
52 pressure medium grooves
54 direction seat valves
56 reversal valves
58 second acting surfaces
60 the 3rd acting surfaces
62 check-valves
64 chillers
66 seat valve bodies
68 presetting valves
70 pressure limit valves
72 purge valves.
Claims (15)
1. for the control block of hydrostatic driving means (1), wherein, it is possible to the first hydraulic press driven by motor (10)
(4) and such second hydraulic press (6) can be connected to control block (2), utilize this second hydraulic press can drive the wheel of vehicle
(16), wherein, in the performance loop of hydraulic pressure through control block (2) two flow paths (18,20) by described hydraulic press (4,
6) it is connected, it is characterised in that hydraulically the first hydraulic press (4) can be decoupled from the second hydraulic press (6) through control block (2),
Further, the fluid volumetric flow at outlet side from the second hydraulic press (6) can set through have access in optional manner
Fixed pressure valve (26) can be intercepted with the pressure that should be able to set mutually.
2. according to the control block described in claim 1, wherein, so set pressure valves (26) so that this pressure valve is connected to
At least one sidepiece of second hydraulic press (6).
3. according to the control block described in claim 1 or 2, wherein, utilize described pressure valve (26) can control from the second hydraulic pressure
Machine (6) connects towards the pressure medium of pressure medium groove (52).
4. according to the control block according to any one of Claim 1-3, wherein, can control in pressure through sequence valve (28,30)
Pressure medium between power valve (26) and the second hydraulic press (6) connects.
5. according to the control block described in claim 4, wherein, pressure valve (26) is connected to two sidepieces of the second hydraulic press (6),
Wherein, between each sidepiece and pressure valve (26), sequence valve (28,30) it is disposed with.
6. by control block in any one of the preceding claims wherein, wherein, drawing valve (36) is set, utilizes this drawing valve can
The joint of the first hydraulic press (4) is connected.
7. by control block in any one of the preceding claims wherein, wherein, in the corresponding flow path of performance loop
(18,20) are provided with coupling valve (32,34).
8. according to the control block described in claim 7, wherein, it is possible to actuate and couple valve (32,34) accordingly, for tune electricly
Open and call in corresponding flow path (18,20).
9. according to the control block described in claim 7 or 8, wherein, drawing valve (36) is at corresponding flow path (18,20) place even
It is connected between coupling valve (32,34) and the first hydraulic press (4) being arranged in accordingly in this flow path.
10. by control block in any one of the preceding claims wherein, wherein, supply pump (38) is through at least one supply valve
(40,42) can with flow path (18,20) at least one be connected.
11. according to the control block described in claim 10, wherein, middle supply valve (44) be fluidly arranged in supply valve (40,
42) and between supply pump (38).
12. according to the control block described in claim 10 or 11, and wherein, hydraulic accumulator (46) is connected to supply valve (40,42)
Upstream.
13. with the hydrostatic driving means according to control block in any one of the preceding claims wherein, this Hydrostatic
The driving means of power has the first hydraulic press and the second hydraulic press (4,6).
14. for the method with the vehicle according to the hydrostatic driving means described in claim 13, wherein, is starting
During vehicle, coupling valve (32,34), one or two sequence valve (28,30) and drawing valve (36) are opened,
And/or wherein, in the traveling of vehicle, sequence valve (28,30) and drawing valve (36) Guan Bi,
And/or wherein, when traction turns off, in the traveling of vehicle, drawing valve (36) is opened,
And/or wherein, in the traveling of vehicle, it is connected to the sequence valve (28,30) of the current outlet side of the second hydraulic press (6)
Open, and other sequence valve (28,30) and drawing valve (36) Guan Bi, and wherein, pressure valve (26) is opened,
And/or wherein, in the traveling of vehicle, it is connected to the sequence valve (28,30) of the current outlet side of the second hydraulic press (6)
Open with drawing valve (36), and other sequence valve (28,30) and coupling valve (32,34) Guan Bi, and wherein, by pressure valve
(26) open.
15. in accordance with the method for claim 14, wherein, when traction turns off, actuates the running brake of vehicle extraly,
And/or wherein, in motion, in the case of sequence valve (28,30) is opened, when on two sidepieces of the second hydraulic press (6)
Pressure almost identical or identical time then this sequence valve and pressure valve (26) are opened.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102015210520.2A DE102015210520A1 (en) | 2015-06-09 | 2015-06-09 | Control block, hydrostatic drive with a control block and method for a vehicle with a hydrostatic drive |
| DE102015210520.2 | 2015-06-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106246620A true CN106246620A (en) | 2016-12-21 |
| CN106246620B CN106246620B (en) | 2020-02-21 |
Family
ID=57394868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610400434.XA Active CN106246620B (en) | 2015-06-09 | 2016-06-08 | Control block, hydrostatic drive having a control block, and method for a vehicle having a hydrostatic drive |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN106246620B (en) |
| AT (1) | AT517273B1 (en) |
| DE (1) | DE102015210520A1 (en) |
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2015
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| CN1211945A (en) * | 1996-03-30 | 1999-03-24 | 腓特烈斯港齿轮工厂股份公司 | Hydrostatic-mechanical drive for mixing drum |
| EP1188708A3 (en) * | 2000-09-18 | 2005-07-20 | Still Gmbh | Hydrostatic drive |
| DE10158325A1 (en) * | 2001-11-28 | 2003-06-26 | Linde Ag | Hydrostatic drive system, prevents diesel motor of motor vehicle being driven at excessive speed when assisting the brakes, employs dual function valves in pressure supply lines |
| CN1576632A (en) * | 2003-07-11 | 2005-02-09 | 沙厄-丹福丝股份有限公司 | Electrical loop flushing system |
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| CN104379972A (en) * | 2012-06-29 | 2015-02-25 | 罗伯特·博世有限公司 | Hydraulic drive |
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Also Published As
| Publication number | Publication date |
|---|---|
| DE102015210520A1 (en) | 2016-12-15 |
| AT517273A2 (en) | 2016-12-15 |
| AT517273B1 (en) | 2018-01-15 |
| AT517273A3 (en) | 2017-07-15 |
| CN106246620B (en) | 2020-02-21 |
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