CN104539133B - Magnetic connection structure, power control equipment, system and method and engineering machinery - Google Patents
Magnetic connection structure, power control equipment, system and method and engineering machinery Download PDFInfo
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- CN104539133B CN104539133B CN201410795142.1A CN201410795142A CN104539133B CN 104539133 B CN104539133 B CN 104539133B CN 201410795142 A CN201410795142 A CN 201410795142A CN 104539133 B CN104539133 B CN 104539133B
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- 230000005291 magnetic effect Effects 0.000 title claims abstract description 108
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- 238000010586 diagram Methods 0.000 description 10
- 239000010720 hydraulic oil Substances 0.000 description 7
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- 230000008878 coupling Effects 0.000 description 5
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Abstract
The invention discloses a magnetic connection structure, power control equipment, a system, a method and engineering machinery, wherein the equipment comprises: receiving means for receiving an actual rotational speed of the engine; the control device is used for adjusting the speed ratio between the input shaft of the hydraulic pump and the output shaft of the engine through the magnetic connection structure according to the actual rotating speed of the engine so as to adjust the output power of the hydraulic pump; wherein the engine is a power output element and the hydraulic pump is a power absorbing element. The invention adjusts the speed ratio between the input shaft of the hydraulic pump and the output shaft of the engine through the magnetic connection structure according to the actual rotating speed of the engine, thereby adjusting the output power of the hydraulic pump.
Description
Technical field
The present invention relates to power control techniques, in particular it relates to magnetic connecting structure, power control apparatus, system, method
And engineering machinery.
Background technology
Non-electrical control hydraulic pump is used in engineering machinery in a large number, logical between electromotor and the hydraulic pump of current engineering machinery
Crossing shaft coupling contact to connect, this mode makes hydraulic pump and electromotor require the highest to its axiality when mounted, and
Join power unadjustable.For this non-electrical control hydraulic pump, main based on power limitation control, non-electrical
Control hydraulic pump P-Q curve can only carry out discharge capacity regulation along identical power curve.Additionally, hydraulic pump is still in an unloaded situation
So operate with engine synchronization, thus power loss is bigger.
In sum, prior art has the disadvantage in that the connection coaxiality between 1, electromotor and hydraulic pump requires height；
2, in the case of actuator is idle, energy loss is big；3, in the case of hydraulic pump and Engine Matching, mesh power can not be adjusted
Joint.
Summary of the invention
It is an object of the invention to provide magnetic connecting structure, power control apparatus, system, method and engineering machinery, be used for
Solve by the speed changing between hydraulic pump and electromotor than the output regulating hydraulic pump.
To achieve these goals, the invention provides a kind of magnetic connecting structure, this magnetic connecting structure includes: first
Magnetic devices, is connected with the outer rotor of power output element；Second magnetic devices, is connected with the internal rotor of power absorption element,
And be correspondingly arranged with described first magnetic devices；Wherein, the outer rotor action of described power output element drives the first magnetic dress
Putting action, this first magnetic devices action drives the second magnetic devices action, thus drives interior turn of described power absorption element
Sub-action, wherein adjusts described power by the relative position between described first magnetic devices of adjustment and the second magnetic devices
The speed ratio of output element and described power absorption element.
Present invention also offers a kind of hydraulic pump power control apparatus, this equipment includes: receives device, starts for reception
The actual speed of machine；Control device, for the actual speed according to described electromotor by above-described magnetic connecting structure
Regulate the speed ratio between hydraulic pump power shaft and engine output shaft, to adjust the output of described hydraulic pump；Wherein,
Described electromotor is power output element, and described hydraulic pump is power absorption element.
Correspondingly, present invention also offers a kind of hydraulic pump power control system, this system includes: above-described hydraulic pressure
Pump power controls equipment；And speed probe, for detecting the actual speed of electromotor.
Correspondingly, present invention also offers a kind of engineering machinery, including above-described hydraulic pump power control system.
Correspondingly, present invention also offers a kind of hydraulic pump Poewr control method, the method includes: receive the reality of electromotor
Border rotating speed；Actual speed according to described electromotor regulates hydraulic pump power shaft by magnetic connecting structure and exports with electromotor
Speed ratio between axle, to adjust the output of described hydraulic pump；Wherein, described electromotor is power output element, described
Hydraulic pump is power absorption element.
By technique scheme, the present invention is regulated by magnetic connecting structure by the actual speed according to electromotor
Speed ratio between hydraulic pump power shaft and engine output shaft, thus regulate the output of hydraulic pump, this technical scheme pair
Axiality between electromotor and hydraulic pump requires the lowest, it is allowed to the bigger error of centralization and angular error, in actuator not
In the case of work, the output of hydraulic pump can be regulated, thus reach good energy-saving effect.
Other features and advantages of the present invention will be described in detail in detailed description of the invention part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and constitutes the part of description, with following tool
Body embodiment is used for explaining the present invention together, but is not intended that limitation of the present invention.In the accompanying drawings:
Fig. 1 is the connection diagram of the power output element that provides of the present invention and magnetic devices；
Fig. 2 is the connection diagram of the power absorption element that provides of the present invention and magnetic devices, and wherein (a) in Fig. 2 is
The situation that thrust spring is compacted, (b) in Fig. 2 is the situation that thrust spring is the most compacted；
Fig. 3 is the block diagram of the hydraulic pump power control apparatus that the present invention provides；
Fig. 4 is the block diagram of the hydraulic pump power control system that the present invention provides；
Fig. 5 is the structure chart of the hydraulic pump power control system that the specific embodiment of the invention provides；And
Fig. 6 is the block diagram of the hydraulic pump Poewr control method that the present invention provides.
Description of reference numerals
1 power output element, electromotor 2 output shaft
Outer rotor 4 first magnetic devices of 3 power output elements, copper ring
The housing 6 connection dish of 5 power absorption elements
Internal rotor 8 second magnetic devices of 7 power absorption elements, magnet ring
9 thrust disc 10 thrust springs
11 cylinder barrel 12 plungers
The power shaft of 13 retaining mechanism 14 power absorption elements
15 hydraulic pump 16 pioneer pumps
17 invariable power actuator 100 hydraulic pump power control apparatus
1001 receive device 1002 controls device
200 speed probe 300 electronically controlled proportional valves
Detailed description of the invention
Below in conjunction with accompanying drawing, the detailed description of the invention of the present invention is described in detail.It should be appreciated that this place is retouched
The detailed description of the invention stated is merely to illustrate and explains the present invention, is not limited to the present invention.
The invention provides a kind of magnetic connecting structure, this magnetic connecting structure includes the first magnetic devices and the second magnetic
Device.This first magnetic devices is connected with the outer rotor of power output element, this second magnetic devices and power absorption element
Internal rotor connects, and this second magnetic devices and the first magnetic devices are correspondingly arranged, wherein, and the outer rotor of power output element
Action drives the first magnetic devices action, the first magnetic devices action to drive the second magnetic devices action, thus drive power to inhale
Receive the internal rotor action of element, wherein adjust by adjusting the relative position between the first magnetic devices and the second magnetic devices
The speed ratio of power output element and power absorption element.
It is known that magnetic devices is for having magnetic device, the degree of coupling between two magnetic devices is the highest, the two
Between magnetic force the biggest, power output element is the biggest with the speed ratio of power absorption element, otherwise, two magnetic devices it
Between degree of coupling the lowest, magnetic force therebetween is the least, and the speed of power output element and power absorption element is than getting over
Little.Therefore, it is possible to come motivation of adjustment output element and power absorption unit by adjusting the degree of coupling between two magnetic devices
The speed ratio of part.In order to reach this purpose, the outer rotor by the first magnetic devices with power output element is needed to fix, second
The internal rotor of magnetic devices and power absorption element is fixed.
Power output element has an output shaft, and outer rotor is fixing with this output shaft to be connected, such that it is able to pass through output shaft
Rotation drive outer rotor rotate.Power absorption element has a power shaft, and internal rotor is fixing with this power shaft to be connected, thus can
To be rotated by the rotational band driven input shaft of internal rotor.In the case of the output shaft rotation of power output element, drive outer turning
Son rotates, and under the magneticaction of the first magnetic devices and the second magnetic devices, the outer rotor of power output element drives power
The internal rotor of absorber element rotates, thus drives the power shaft of power absorption element to rotate.Thus can be at power output element
The position that intercouples of the internal rotor of outer rotor and power absorption element magnetic devices is set.Such as, at power output element
Outer rotor end the first magnetic devices is set, in the internal rotor end of power absorption element, the second magnetic devices is set.Wherein,
First magnetic devices can be to have the becket that the metal of magnetic conductivity is formed, and the present invention illustrates as a example by copper ring, and this is the years old
One magnetic devices annular is arranged on the outer rotor end of power output element.Second magnetic devices can be magnet ring, with copper
Ring annular accordingly is arranged on the internal rotor end of power absorption element.In the case of power output element rotates, this power
The outer rotor concomitant rotation of output element, copper ring produces faradic current because of the magnetic line of force of cutting magnet ring, faradic
Induced field makes the internal rotor of power absorption element carry out and power output element phase with the magnetic field interaction of magnet ring
The rotation answered.Certainly, the invention is not restricted to this, the first magnetic devices can be magnet ring, and the second magnetic devices can be copper
Ring falls within protection scope of the present invention.It should be noted that the present invention whole with the first magnetic devices can as copper ring,
Two magnetic devices can be to illustrate as a example by magnet ring.
Fig. 1 is the connection diagram of the power output element that provides of the present invention and magnetic devices, as it is shown in figure 1, power is defeated
Going out element 1 and have output shaft 2 and outer rotor 3, outer rotor 3 is fixing with output shaft 2 to be connected, copper ring 4 (the i.e. first magnetic devices) ring
Shape is arranged on the end of the outer rotor 3 of power output element 1, and copper ring 4 is fixed with outer rotor 3 and is connected.Additionally, power output is first
The outer rotor 3 of part 1 couples with the housing 5 (housing 5 is the material that resistivity ratio is higher) of power absorption element, and power output
Element 1 is fixed by being connected dish 6 with the housing 5 of power absorption element.
Fig. 2 is the connection diagram of the power absorption element that provides of the present invention and magnetic devices, and wherein (a) in Fig. 2 is
The situation that thrust spring is compacted, (b) in Fig. 2 is the situation that thrust spring is the most compacted.As in figure 2 it is shown, power absorption is first
Part (not shown in Fig. 2) has power shaft 14 and internal rotor 7, and internal rotor 7 is fixing with power shaft 14 to be connected, magnet ring 8 annular
It is arranged on the end of internal rotor 7, and magnet ring 8 is fixed with the internal rotor 7 of power absorption element and is connected.
As in figure 2 it is shown, the magnetic connecting structure that the present invention provides also includes thrust disc 9 and thrust spring 10.Outside thrust disc 9
Side has spline, and the spline inside this thrust disc 9 and the housing 5 of power absorption element is of coupled connections the (spline outside thrust disc 9
With the spline engagement inside the housing 5 of absorber element, owing to the housing 5 of power absorption element is immovable, it is possible to ensure push away
Power dish 9 only moves radially along the power shaft 14 of power absorption element, without rotating), thrust spring 10 elastic connection pushes away
Power dish 9.Wherein, the spline of power shaft 14 end of the spline of internal rotor 7 endoporus of power absorption element and power absorption element
Be coupled (that is, the external splines that power shaft 14 end of power absorption element and internal rotor 7 endoporus have identical modulus) so that dynamic
The internal rotor 7 of power absorber element can drive the power shaft 14 of power absorption element to rotate and can be along the spline of power shaft 14
Radially move (mask engaged with power absorption element internal rotor 7 of thrust disc 9 has certain wearability).Thrust spring 10
Flexible so that the internal rotor 7 that thrust disc 9 drives power absorption element carries out radial motion, thus adjust the first magnetic devices
Relative position between 4 with the second magnetic devices 8, this second magnetic devices 8 is positioned at internal rotor 7 outer rim of power absorption element,
The most actually adjust is the relative position between copper ring 4 with magnet ring 8.
The magnetic connecting structure that the present invention provides also includes actuated element, drives power absorption element by this actuated element
The radial motion of internal rotor 7 of power shaft 14, thus drive the flexible of thrust spring 10.As in figure 2 it is shown, this actuated element can
Think hydraulic jack, specifically include cylinder barrel 11 and plunger 12.Specifically, needing between change copper ring 4 and magnet ring 8
Relatively in the case of position, by changing the hydraulic fluid pressure inputted to cylinder barrel 11, thrust spring 10 stress can be occurred
Change so that the internal rotor 7 of power absorption element does radial motion, thus changes the phase para-position between copper ring 4 with magnet ring 8
Put.As in figure 2 it is shown, the housing 5 of cylinder barrel 11 with power absorption element can be fixed by retaining mechanism 13.
Fig. 3 is the block diagram of the hydraulic pump power control apparatus 100 that the present invention provides, as it is shown on figure 3, this equipment 100 includes
Receive device 1001 and control device 1002.Receive device 1001 and be used for receiving the actual speed of electromotor, control device 1002
Regulate hydraulic pump power shaft for the actual speed according to electromotor by magnetic connecting structure described above and start
Speed ratio between machine output shaft, to adjust the output of hydraulic pump, it is first that electromotor as described herein is power output
Part, hydraulic pump is power absorption element.By above in association with the magnetic connecting structure described by Fig. 1 and Fig. 2, Ke Yitong
Overregulate the relative position between the first magnetics and the second magnetics to export to regulate hydraulic pump power shaft with electromotor
Speed ratio between axle.
When engine gears is constant, the rotating speed of electromotor reflects the size of hydraulic pump output, specifically,
In the case of electromotor is operated in engine governed speed curve regions, if the actual speed of electromotor relatively desired speed is high, then illustrate
Hydraulic pump output is the least, i.e. hydraulic pump can not fully absorb engine power, otherwise, the actual speed of electromotor is more predetermined
Rotating speed is the lowest, then explanation hydraulic pump output is too big, and desired speed here is in the case of setting engine gears
Determine.Such that it is able to carry out following control: in the case of the actual speed of electromotor is less than desired speed, control device
1002 control to reduce the speed ratio between hydraulic pump power shaft and engine output shaft, and the actual speed at electromotor is more than subscribes
In the case of rotating speed, control device 1002 and control to increase the speed ratio between hydraulic pump power shaft and engine output shaft.
For reducing the speed ratio between hydraulic pump power shaft and engine output shaft, can be by reducing input to cylinder barrel
The pressure of the hydraulic oil in 11 makes thrust spring 10 stress diminish to promote thrust disc 9 to drive hydraulic pump internal rotor to move right
(as a example by shown in Fig. 2), makes the overlapping area between copper ring 4 and magnet ring 8 diminish, such copper ring 4 and magnet ring 8 it
Between magnetic force diminish, the speed between hydraulic pump power shaft and engine output shaft diminishes than the most therewith, thus reduces hydraulic pressure
The output of pump.
For increasing the speed ratio between hydraulic pump power shaft and engine output shaft, can be by increasing input to cylinder barrel
The pressure of the hydraulic oil in 11 make plunger 12 promote hydraulic pump internal rotor be moved to the left (as a example by shown in Fig. 2, now thrust bullet
Spring 10 stress becomes big), make the overlapping area between copper ring 4 and magnet ring 8 become big, between such copper ring 4 and magnet ring 8
Magnetic force becomes big, and the speed between hydraulic pump power shaft and engine output shaft becomes big than the most therewith, thus increases hydraulic pump
Output.
The reasonability of control method of the present invention is described below by formula (1).
In above formula (1), PbFor the output of hydraulic pump, q is hydraulic pump discharge, and P is hydraulic pump outlet pressure,
N is engine speed, and the speed ratio of i hydraulic pump and electromotor, η is hydraulic system aggregate efficiency.Formula (1) is people in the art
Equation known to Yuan, by this formula (1) it can be seen that can be controlled than i by the speed of regulation hydraulic pump with electromotor
The output of hydraulic pump.
Fig. 4 is the block diagram of the hydraulic pump power control system that the present invention provides, and as shown in Figure 4, this system not only includes Fig. 3
Shown hydraulic pump power control apparatus 100, also includes speed probe 200, and this speed probe 200 is used for detecting electromotor
Actual speed.
Additionally, as shown in Figure 4, the system that the present invention provides also includes electronically controlled proportional valve 300, with control device 1002 and magnetic
Property attachment structure connect, control device 1002 can regulate hydraulic pump by controlling the input current of this electronically controlled proportional valve 300
Speed ratio between power shaft and engine output shaft.Specifically, the hydraulic oil output port of this electronically controlled proportional valve 300 and cylinder barrel
11 connections, can regulate the pressure of the hydraulic oil inputted to cylinder barrel 11 by the input current of regulation electronically controlled proportional valve 300, from
And realize regulating the speed ratio between press pump power shaft and engine output shaft.Increase between copper ring 4 and magnet ring 8 at needs
Overlapping area in the case of, control device 1002 and increase the input current of this electronically controlled proportional valve 300, this makes by this automatically controlled
The pressure of the hydraulic oil of the cylinder barrel 11 that proportioning valve 300 exports to magnetic connecting structure increases, and makes plunger 12 promote hydraulic pump
Internal rotor is moved to the left (as a example by shown in Fig. 2, now thrust spring 10 stress becomes big), thus increases copper ring 4 and permanent magnet
Overlapping area between ring 8, thus increase the speed ratio between hydraulic pump power shaft and engine output shaft.Otherwise, needing
In the case of overlapping area between copper ring 4 to be reduced and magnet ring 8, control device 1002 and reduce this electronically controlled proportional valve 300
Input current, this makes the pressure of hydraulic oil of the cylinder barrel 11 exported to magnetic connecting structure by this electronically controlled proportional valve 300
Power reduces, so that thrust spring 10 stress diminishes, the internal rotor of hydraulic pump moves right (as a example by shown in Fig. 2), thus
Reduce the overlapping area between copper ring 4 and magnet ring 8, thus reduce between hydraulic pump power shaft and engine output shaft
Speed ratio.
Additionally, the hydraulic pump power control system that the present invention provides also includes invariable power actuator (not shown in Fig. 4), control
Device 1002 processed, in the case of the outlet pressure of hydraulic pump is more than set in advance pressure regulation power, controls to reduce the row of hydraulic pump
Amount.In the case of using two hydraulic pumps to work, outlet pressure here is the outlet pressure sum of two hydraulic pumps simultaneously.
It should be noted that invariable power actuator here is the regulative mode regulating hydraulic pump output in prior art, this
The bright power adjustments side using magnetic connecting structure that invariable power regulative mode of the prior art can be provided with the present invention
Formula is used in conjunction with.Can not also use invariable power regulative mode, and only with defeated to hydraulic pump of magnetic connecting structure
Go out power to be adjusted.Generally, in the case of hydraulic pump 15 is variable pump, invariable power regulation is used to be connected with magnetic
The mode that structure regulates jointly, in the case of hydraulic pump 15 is dosing pump, uses the mode of only magnetic connecting structure regulation.
Fig. 5 is the structure chart of the hydraulic pump power control system that the specific embodiment of the invention provides, in Figure 5, power
Output element 1 is electromotor 1, and power absorption element is hydraulic pump 15, and pilot pressure is provided by pioneer pump 16.
After electromotor 1 starts, safety lock is in the lock state that (this safety lock is to prevent because of error starting electronically controlled proportional valve
300 and set), now electronically controlled proportional valve 300 switch K disconnect, electronically controlled proportional valve 300 is in off-position, hence into
The hydraulic fluid pressure of cylinder barrel 11 is minimum (this situation is as shown in (b) in Fig. 2), and now the power loss of hydraulic pump is the most minimum,
Such that it is able to realize energy-conservation effect.
In the case of electronically controlled proportional valve 300 works, switch K connects, and this timed unit 1002 can be by regulation electricity
The input current of control proportioning valve 300 regulates the pressure of the hydraulic oil entering cylinder barrel 11.Situation shown in Fig. 5 is thrust spring
10 compacted situations, in this case, copper ring 4 is maximum with the overlapping area of magnet ring 5, the power shaft 6 of hydraulic pump 15
And the speed between the output shaft 2 of electromotor 1 is than maximum.Embodiment shown in Fig. 5 is have employed two hydraulic pumps 15 double
The mode of main pump, it would however also be possible to employ the mode of single main pump of a hydraulic pump 15, its implementation and the mode using double main pump
Similar.
It is tune commonly used in the prior art for being regulated the principle of the discharge capacity of hydraulic pump 15 by invariable power actuator 17
Joint mode, in this, it will not go into details.
Correspondingly, present invention also offers a kind of engineering machinery, including hydraulic pump power control system described above.
Fig. 6 is the block diagram of the hydraulic pump Poewr control method that the present invention provides, and as shown in Figure 6, the method includes: receives and sends out
The actual speed of motivation；Actual speed according to electromotor regulates hydraulic pump power shaft and electromotor by magnetic connecting structure
Speed ratio between output shaft, to adjust the output of described hydraulic pump；Wherein, electromotor is power output element, hydraulic pressure
Pump is power absorption element.
It should be noted that the detail of the hydraulic pump Poewr control method of present invention offer and benefit carry with the present invention
The hydraulic pump power control apparatus of confession is similar to, and in this, it will not go into details.
The preferred embodiment of the present invention is described in detail above in association with accompanying drawing, but, the present invention is not limited to above-mentioned reality
Execute the detail in mode, in the technology concept of the present invention, technical scheme can be carried out multiple letter
Monotropic type, these simple variant belong to protection scope of the present invention.
In technical scheme, magnetic between engine output shaft with hydraulic pump power shaft, is used to be connected, can be very
Reduce well vibration and noise, and it also avoid the error of centralization and angular error.Engine output shaft and hydraulic pump power shaft
Noncontact, thus without sealing, it is simultaneously achieved zero leakage, owing to engine output shaft and hydraulic pump power shaft are non-rigid company
Connecing, thus avoid the damage of hydraulic pump shaft coupling, reduce potential safety hazard, maintenance cost is low, and easy for installation, adapts to
Work under severe operating mode.
Additionally, the technical scheme provided by the present invention, be possible to prevent engine overload and electromotor improper fall speed, can
To extend the service life of each parts in drive system, and by the regulation to hydraulic pump internal rotor, it is possible not only to reach
Required moment of torsion transmission and the requirement of speed transmission, and power matching can be made reasonable.
It is further to note that each the concrete technical characteristic described in above-mentioned detailed description of the invention, at not lance
In the case of shield, can be combined by any suitable means.In order to avoid unnecessary repetition, the present invention to various can
The compound mode of energy illustrates the most separately.
Additionally, combination in any can also be carried out between the various different embodiment of the present invention, as long as it is without prejudice to this
The thought of invention, it should be considered as content disclosed in this invention equally.
Claims (11)
1. a magnetic connecting structure, it is characterised in that this magnetic connecting structure includes:
First magnetic devices, is connected with the outer rotor of power output element；
Second magnetic devices, is connected with the internal rotor of power absorption element, and is correspondingly arranged with described first magnetic devices；
Wherein, the outer rotor action of described power output element drives the first magnetic devices action, this first magnetic devices action
Drive the second magnetic devices action, thus drive the internal rotor action of described power absorption element, wherein by adjusting described the
Relative position between one magnetic devices and the second magnetic devices adjusts described power output element and described power absorption unit
The speed ratio of part；
This magnetic connecting structure also includes:
Thrust disc, outside has spline, and this thrust disc is of coupled connections with the spline of the case inside of described power absorption element；
Thrust spring, the described thrust disc of elastic connection；
Wherein, the flower of the power shaft end of the spline of the internal rotor endoporus of described power absorption element and described power absorption element
Key is coupled, and the flexible internal rotor making described thrust disc drive described power absorption element of described thrust spring is carried out radially
Motion, thus adjust the relative position between described first magnetic devices and the second magnetic devices, described second magnetic devices position
Internal rotor cylindrical in described power absorption element.
Magnetic connecting structure the most according to claim 1, it is characterised in that wherein,
Described first magnetic devices is to have the becket that the metal of magnetic conductivity is formed, and annular is arranged on described power output element
Outer rotor end；And
Described second magnetic devices is magnet ring, is arranged on described power absorption with described first magnetic devices annular accordingly
The internal rotor end of element.
Magnetic connecting structure the most according to claim 1, it is characterised in that this magnetic connecting structure includes:
Actuated element, is driven the radial motion of the internal rotor of described power absorption element thus drives described by this actuated element
Stretching of thrust spring.
4. a hydraulic pump power control apparatus, it is characterised in that this equipment includes:
Receive device, for receiving the actual speed of electromotor；
Control device, for the actual speed according to described electromotor by claim institute as any one of claim 1-3
The magnetic connecting structure stated is to regulate the speed ratio between hydraulic pump power shaft and engine output shaft, to adjust described hydraulic pump
Output；
Wherein, described electromotor is power output element, and described hydraulic pump is power absorption element.
Equipment the most according to claim 4, it is characterised in that regulate hydraulic pump according to the actual speed of described electromotor defeated
Enter the ratio of the speed between axle and engine output shaft to include:
In the case of the actual speed of described electromotor is less than desired speed, described control device controls to reduce described hydraulic pump
Speed ratio between power shaft and engine output shaft；And
In the case of the actual speed of described electromotor is more than desired speed, described control device controls to increase described hydraulic pump
Speed ratio between power shaft and engine output shaft.
6. a hydraulic pump power control system, it is characterised in that this system includes:
Hydraulic pump power control apparatus described in claim any one of claim 4-5；And
Speed probe, for detecting the actual speed of electromotor.
System the most according to claim 6, it is characterised in that this system also includes:
Electronically controlled proportional valve, is connected with described control device and described magnetic connecting structure, and described control device is by controlling this electricity
The input current of control proportioning valve regulates the speed ratio between hydraulic pump power shaft and engine output shaft.
System the most according to claim 6, it is characterised in that this system also includes:
Invariable power actuator, described control device at the outlet pressure of described hydraulic pump more than the feelings of set in advance pressure regulation power
Under condition, control to reduce described hydraulic pressure pump delivery.
9. an engineering machinery, it is characterised in that include the hydraulic pump power described in claim any one of claim 6-8
Control system.
10. a hydraulic pump Poewr control method, it is characterised in that the method includes:
Receive the actual speed of electromotor；
Actual speed according to described electromotor regulates hydraulic pressure by the magnetic connecting structure as described in claim 1-3 is arbitrary
Speed ratio between pump power shaft and engine output shaft, to adjust the output of described hydraulic pump；
Wherein, described electromotor is power output element, and described hydraulic pump is power absorption element.
11. methods according to claim 10, it is characterised in that regulate hydraulic pump according to the actual speed of described electromotor
Speed ratio between power shaft and engine output shaft includes:
In the case of the actual speed of described electromotor is less than desired speed, control reduce described hydraulic pump power shaft and start
Speed ratio between machine output shaft；And
In the case of the actual speed of described electromotor is more than desired speed, control increase described hydraulic pump power shaft and start
Speed ratio between machine output shaft.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410795142.1A CN104539133B (en) | 2014-12-18 | 2014-12-18 | Magnetic connection structure, power control equipment, system and method and engineering machinery |
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| CN201410795142.1A CN104539133B (en) | 2014-12-18 | 2014-12-18 | Magnetic connection structure, power control equipment, system and method and engineering machinery |
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| CN104539133A CN104539133A (en) | 2015-04-22 |
| CN104539133B true CN104539133B (en) | 2017-01-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110747929A (en) * | 2019-09-19 | 2020-02-04 | 山东临工工程机械有限公司 | Power and torque distribution control method for positive flow excavator |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5791426A (en) * | 1995-11-06 | 1998-08-11 | Toyota Jidosha Kabushiki Kaisha | Power output apparatus and method of controlling the same |
| CN202197206U (en) * | 2011-09-11 | 2012-04-18 | 余虹锦 | Novel conical inner rotor asynchronous permanent magnet coupling speed regulator of oblique magnetic field |
| CN103633813A (en) * | 2013-11-12 | 2014-03-12 | 江苏大学 | Split electromagnetic coupling clutch and electro-hydraulic steering system driven by split electromagnetic coupling clutch |
| CN204013180U (en) * | 2014-08-29 | 2014-12-10 | 宝鸡泰华磁机电技术研究所有限公司 | Cylindrical magnetic induction speed regulator |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5791426A (en) * | 1995-11-06 | 1998-08-11 | Toyota Jidosha Kabushiki Kaisha | Power output apparatus and method of controlling the same |
| CN202197206U (en) * | 2011-09-11 | 2012-04-18 | 余虹锦 | Novel conical inner rotor asynchronous permanent magnet coupling speed regulator of oblique magnetic field |
| CN103633813A (en) * | 2013-11-12 | 2014-03-12 | 江苏大学 | Split electromagnetic coupling clutch and electro-hydraulic steering system driven by split electromagnetic coupling clutch |
| CN204013180U (en) * | 2014-08-29 | 2014-12-10 | 宝鸡泰华磁机电技术研究所有限公司 | Cylindrical magnetic induction speed regulator |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110747929A (en) * | 2019-09-19 | 2020-02-04 | 山东临工工程机械有限公司 | Power and torque distribution control method for positive flow excavator |
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| CN104539133A (en) | 2015-04-22 |
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Effective date of registration: 20211202 Address after: Room 4015, office building, 677 Lugu Avenue, Changsha hi tech Development Zone, Hunan 410000 Patentee after: Zoomlion earth moving machinery Co.,Ltd. Address before: 714000 west section of Chaoyang Street, high tech Zone, Weinan City, Shaanxi Province Patentee before: ZOOMLION HEAVY INDUSTRY SCIENCE&TECHNOLOGY DEVELOPMENT Co.,Ltd. WEINAN BRANCH Patentee before: ZOOMLION HEAVY INDUSTRY SCIENCE&TECHNOLOGY Co.,Ltd. |