CN101660546B - Blade-type hydraulic transformer controlled by motor - Google Patents

Abstract

The invention relates to a blade-type hydraulic transformer controlled by a motor, which comprises a shell, a rotating shaft, a left end cover, a valve plate, stators, rotators, a right end cover, a gear, a wedge-shaped plate, an impeller, a motor and the like. The blade-type hydraulic transformer is characterized in that centers of one set of rotators and the stator are fixed and superposed, the centers of the other rotators and the stator are all fixed, and if the centers of the rotators and the stators are not superposed, the impeller is radially arranged along the rotators; one rotator is in matched connection with a left half shaft of the rotating shaft through splines, while the other rotator is in matched connection with a right half shaft of the rotating shaft through flat keys; the excircle of one stator is manufactured into a gear shape by taking a long-radius arc center as the center in the range of 150 degrees and form a gear driving pair with the gear, and the outer surface of the other stator is in matched contact with the right lateral surface of the wedge-shaped plate; and the valve plate is arranged on the rotating shaft and tightly pressed on the left lateral surfaces and the right lateral surfaces of the stators, the left end of the rotating shaft is arranged on the valve plate on the left side, the right end of the rotating shaft is arranged on the right end cover, and the left end cover and the right end cover are fixed on the shell through bolts.

Description

The blade type hydraulic transformer of Electric Machine Control

(1) technical field

The present invention relates to a kind of hydraulic transformer, specifically a kind of blade type hydraulic transformer of Electric Machine Control belongs to mechanical field.

(2) background technique

Hydraulic transformer is meant a kind of hydraulic element of in hydraulic transmission, realizing the pressure conversion.Hydraulic transformer can convert the input hydraulic pressure under the setting pressure under the another kind of pressure output hydraulic pressure ability expeditiously; Use it can realize multi-load mutual incoherent control in constant pressure network; Also can make the energy reverse flow; Not only can not have restriction loss ground and drive the straight line load, but also can the rotary driving load.

Existing hydraulic transformer all is plunger-type structure basically, and its working pressure is high, more than 20MPa; Range of flow is big, generally is used for high pressure, high-volume hydraulic system, in, use in the low-pressure hydraulic system; Efficient is very low, and the plunger hydraulic transformer device structure is complicated, machining accuracy is high, and is responsive to oil pollution; The oil strain required precision is high, and price is expensive, therefore makes the application area of hydraulic transformer receive very big restriction.

(3) summary of the invention

Technical assignment of the present invention is the deficiency to existing technology; A kind of compact structure is provided, flow is even, noise is little, running accuracy is high and steady, an end can be used for middle and high hydraulic fluid pressing system, the other end can be used for the blade type hydraulic transformer of low-pressure hydraulic system; With solve load end pressure ratio fuel feeding constant pressure network system pressure little many problems; Improve the working efficiency of hydraulic system, thereby enlarged the application area of hydraulic transformer, enriched the kind of hydraulic transformer.

The present invention solves the technological scheme that its technical problem is taked:

The blade type hydraulic transformer of Electric Machine Control mainly is made up of housing, running shaft, left end cap, thrust plate, stator, rotor, blade, right end cap, gear, wedge shaped plate, motor etc.; The center of one group rotor and stator is fixing and overlaps that the width of rotor is slightly littler than the width of stator, and rotor is installed in the stator; One end of blade is put into the blade groove of rotor, and the other end contacts with inner surface of stator, and blade is settled along rotor radial; Rotor cooperates connection through spline with the left half axle of running shaft, and the stator outer ring is to make the gear pattern in the 150 ° of scopes in center with inner ring semi major axis center of arc, and stator and gear constitute gear driving pair; Gear is installed on the output shaft of motor; Motor is installed on the housing, and thrust plate is installed on the running shaft, and be pressed on stator about on two sides; The center of another group rotor and stator is all fixed, and centre of rotor does not overlap with the center of stator, and certain throw of eccentric is arranged; The wedge shaped plate left surface contacts with the shell inner surface cooperation, and the wedge shaped plate right flank contacts with the stator outer surface cooperation, and the width of rotor is slightly littler than the width of stator; Rotor is installed in the stator, and an end of blade is put into the blade groove of rotor, and the other end contacts with inner surface of stator; Blade is settled along rotor radial; Rotor cooperates connection with the right axle shaft of running shaft through flat key, and thrust plate is installed on the running shaft, and be pressed on stator about on two sides; The running shaft left half axle is processed spline for one section; The running shaft right axle shaft is processed flat key for one section; The left end of running shaft is installed on the thrust plate of left side through sliding bearing, and the right-hand member of running shaft is installed on the right end cap through sliding bearing, and left end cap, right end cap are through being bolted on the housing.

The blade type hydraulic transformer of Electric Machine Control of the present invention compared with prior art, the beneficial effect that is produced is:

(1) the present invention can be adjusted into the arbitrary value in the induced pressure excursion with the constant pressure network system pressure with the mode of no restriction loss.

(2) the present invention's one end can be used for middle and high hydraulic fluid pressing system; The other end can be used for the blade type hydraulic transformer of low-pressure hydraulic system; Solved load end pressure ratio fuel feeding constant pressure network system pressure little many problems; Improve the working efficiency of hydraulic system, enlarged the application area of hydraulic transformer, enriched the kind of hydraulic transformer.

(3) volume of the present invention is little, in light weight, rotary inertia is little, and control is convenient, is easy to realize accurate control, and control performance is good.

(4) description of drawings

Below in conjunction with accompanying drawing and embodiment the present invention is further specified.

Fig. 1 is a structure diagram of the present invention

Fig. 2 is an A-A view of the present invention

Fig. 3 is a B-B view of the present invention

Fig. 4 is a C-C view of the present invention

Fig. 5 is a hydraulic fluid port Connecting format schematic representation of the present invention

Fig. 6 is a transformation principle schematic of the present invention

Among the figure: 1. housing, 2. running shaft, 3. left end cap, 4,7. first assembly flow table, 5. first stator; 6. the first rotor, 8,11. second assembly flow tables, 9. second stator, 10. second rotor, 12. right end caps; 13. gear, 14. first groups of blades, 15. wedge shaped plates, 16. second groups of blades, 17. motors

(5) embodiment

Explanation at length below below in conjunction with accompanying drawing and embodiment the present invention being done.

Like Fig. 1,2,3, shown in 4, the blade type hydraulic transformer of Electric Machine Control of the present invention mainly is made up of housing 1, running shaft 2, left end cap 3, the first assembly flow table 4,7 and first stator 5, the first rotor 6, the second assembly flow table 8,11 and second stator 9, second rotor 10, right end cap 12, gear 13, first group of blade 14, wedge shaped plate 15, second group of blade 16, motor 17 etc.; The center of the first rotor 6 and first stator 5 is fixing and overlaps; The width of the first rotor 6 is slightly littler than the width of first stator 5; The first rotor 6 is installed in first stator 5, and an end of first group of blade 14 is put into the blade groove of the first rotor 6, and the other end contacts with the internal surface of first stator 5; First group of blade 14 radially settled (being that laying angle is zero) along the first rotor 6; The first rotor 6 cooperates connection through spline with the left half axle of running shaft 2, under the effect of constant pressure network system mesohigh oil, but 2 rotations of the first rotor 6 driven rotary axles; First stator, 5 outer rings are to make the gear pattern in the 150 ° of scopes in center with inner ring semi major axis center of arc; First stator 5 constitutes gear driving pair with gear 13; Under the drive of motor 17 first stator 5 clockwise or be rotated counterclockwise and carry out variable, gear 13 is installed on the output shaft of motor 17, motor 17 is installed on the housing 1; The first assembly flow table 4,7 is installed on the running shaft 2, and be pressed on first stator 5 about on two sides; The center of second rotor 10 and second stator 9 is all fixed, and the center of second rotor 10 does not overlap with the center of second stator 9, and certain throw of eccentric is arranged; Wedge shaped plate 15 left surfaces contact with the cooperation of housing 1 internal surface, and wedge shaped plate 15 right flanks contact with the cooperation of second stator, 9 outer surfaces; The width of second rotor 10 is slightly littler than the width of second stator 9; Second rotor 10 is installed in second stator 9; One end of second group of blade 16 is put into the blade groove of second rotor 10; The other end contacts with the internal surface of second stator 9, and second group of blade 16 radially settled along second rotor 10, and second rotor 10 cooperates connection through flat key with the right axle shaft of running shaft 2; The second assembly flow table 8,11 is installed on the running shaft 2, and be pressed on second stator 9 about on two sides; Drive 10 rotations of second rotor, pressure oil output by running shaft 2; Running shaft 2 left half axles are processed spline for one section; Running shaft 2 right axle shafts are processed flat key for one section; The left end of running shaft 2 is installed on the left side thrust plate 4 of the first assembly flow table through sliding bearing; The right-hand member of running shaft 2 is installed on the right end cap 12 through sliding bearing, and left end cap 3, right end cap 12 are through being bolted on the housing 1.

But, can form quantitative part 19 by running shaft 2, second rotor 10, second stator 9, wedge shaped plate 15, second group of blade 16, second assembly flow table 8,11 etc. by composition variable parts 18 such as running shaft 2, the first rotor 6, first stator 5, gear 13, first group of blade 14, motor 17, the first assembly flow tables 4,7.The variable parts 18 of the blade type hydraulic transformer of described Electric Machine Control and structure, the functional similarity of Double-action Vane Secondary Component, variable parts 18 can be seen a Double-action Vane Secondary Component as; The quantitative part 19 of the blade type hydraulic transformer of described Electric Machine Control and structure, the functional similarity of quantitative single-acting sliding-vane motor, quantitative part 19 can be seen a quantitative single-acting sliding-vane motor as; So the blade type hydraulic transformer of described Electric Machine Control can be regarded as by secondary component and fixed displacement motor coaxial rigid connection and forms, and is as shown in Figure 5; The filler opening that the upper left hydraulic fluid port M of variable parts 18 is the blade type hydraulic transformer of Electric Machine Control, filler opening M is connected with the high voltage terminal of constant pressure network system, the oil outlet that the upper right hydraulic fluid port N of quantitative part 19 is the blade type hydraulic transformer of Electric Machine Control; Oil outlet N is connected with load end; Filler opening M is greater than oil outlet N, and the following hydraulic fluid port of variable parts 18 and the following hydraulic fluid port of quantitative part 19 link together, and becomes hydraulic fluid port O of blade type hydraulic transformer of Electric Machine Control; Hydraulic fluid port O is connected with fuel tank; Hydraulic fluid port O replenishes fluid to hydraulic transformer on the one hand, and the fluid with unnecessary fluid and hydraulic transformer internal leakage generation flows back to fuel tank on the other hand, and hydraulic fluid port O is greater than filler opening M.

As shown in Figure 6, in the constant pressure network pressure p ₁Effect under, the active torque that variable parts 18 produce is:

${\mathrm{<figure-callout\; id="1"\; label="T"\; filenames="H2009100184220E00031.png"\; state="\{\{state\}\}">T</figure-callout>}}_1=\frac{{\mathrm{<figure-callout\; id="1"\; label="V"\; filenames="H2009100184220E00031.png"\; state="\{\{state\}\}">V</figure-callout>}}_1}{2\mathrm{\&pi;}}(p_1-p_0)$

The drag torque that quantitative part 19 produces is:

${\mathrm{<figure-callout\; id="2"\; label="T"\; filenames="H2009100184220E00021.png,H2009100184220E00031.png"\; state="\{\{state\}\}">T</figure-callout>}}_2=-\frac{{\mathrm{<figure-callout\; id="2"\; label="V"\; filenames="H2009100184220E00021.png,H2009100184220E00031.png"\; state="\{\{state\}\}">V</figure-callout>}}_2}{2\mathrm{\&pi;}}(p_2-p_0)$

In the formula: V ₁, V ₂Be the discharge capacity of variable parts 18, quantitative part 19, p ₁, p ₂Be the pressure of hydraulic transformer into and out of oil port, p ₀Be the pressure at fuel tank place, common p ₀=0.

Ignore the frictional resistance moment between variable parts 18 and the quantitative part 19, work as T ₁+ T ₂=0 o'clock, hydraulic transformer was in state of equilibrium, and this moment, hydraulic transformer into and out of the pressure ratio between the hydraulic fluid port was:

$\mathrm{\&lambda;}=\frac{p_2}{{\mathrm{<figure-callout\; id="1"\; label="p"\; filenames="H2009100184220E00031.png"\; state="\{\{state\}\}">p</figure-callout>}}_1}=\frac{V_1}{V_2}---\left(1\right)$

In the formula: λ is a transformation ratio.

Can be found out that by above derivation transformation ratio is the ratio of hydraulic transformer inlet/outlet pressure, it also equals the inverse ratio of corresponding discharge capacity.Here pressure p ₁Be the pressure of constant pressure network, it is a definite value, and pressure p ₂Depend on that due to load, therefore the transformation of the blade type hydraulic transformer of described Electric Machine Control comes down to regulate discharge capacity V ₁/ V ₂Value because the discharge capacity V of quantitative part 19 ₂Be a fixed value, so be discharge capacity V in the work through Moderator Variable parts 18 ₁Satisfy the needs of load variations.

When the blade type hydraulic transformer of described Electric Machine Control is not worked, the first rotor 6 of variable parts 18 and second rotor, the 10 equal transfixions of quantitative part 19, first stator 5 of variable parts 18 is in initial rotational position (zero point), the discharge capacity V of variable parts 18 ₁Be zero, can know that by formula (1) transformation ratio λ equals zero.

During the work of the blade type hydraulic transformer of described Electric Machine Control, for adapting to the variation of load, under the effect of motor, first stator 5 of variable parts 18 clockwise or be rotated counterclockwise, along with the variation of first stator, 5 angle of swing, the discharge capacity V of variable parts 18 ₁Also constantly change, can be known by formula (1), transformation ratio λ just changes thereupon, realizes transformation, satisfies the needs of load variations.

The size and Orientation of first stator, 5 angle of swing of the variable parts 18 of the blade type hydraulic transformer of described Electric Machine Control is by the corner decision of motor (servomotor or stepping motor) output shaft; In the work; Detect the corner of servomotor output shaft by angular displacement sensor; Feed back to controller, send instruction by controller and give servomotor, control first stator, 5 angle of swing (size and Orientation); Or send to the umber of pulse of stepping motor by controller control, control the angle of swing (size and Orientation) of first stator 5.

Claims (2)

1. the blade type hydraulic transformer of an Electric Machine Control comprises: housing (1), running shaft (2), left end cap (3), the first assembly flow table (4,7), first stator (5), the first rotor (6), the second assembly flow table (8,11), second stator (9), second rotor (10), right end cap (12), gear (13), first group of blade (14), wedge shaped plate (15), second group of blade (16), motor (17); It is characterized in that the center of the first rotor (6) and first stator (5) is fixing and overlaps that the width of the first rotor (6) is slightly littler than the width of first stator (5); The first rotor (6) is installed in first stator (5), and an end of first group of blade (14) is put into the blade groove of the first rotor (6), and the other end of first group of blade (14) contacts with the internal surface of first stator (5); First group of blade (14) radially settled along the first rotor (6), and the first rotor (6) cooperates connection through spline with the left half axle of running shaft (2), and first stator (5) outer ring is to make the gear pattern in the 150 ° of scopes in center with inner ring semi major axis center of arc; First stator (5) constitutes gear driving pair with gear (13), and gear (13) is installed on the output shaft of motor (17), and motor (17) is installed on the housing (1); The first assembly flow table (4,7) is installed on the running shaft (2); And be pressed on first stator (5) about on two sides, the center of second rotor (10) and second stator (9) is all fixed, the center of second rotor (10) does not overlap with the center of second stator (9); Certain throw of eccentric is arranged; Wedge shaped plate (15) left surface contacts with the cooperation of housing (1) internal surface, and wedge shaped plate (15) right flank contacts with the cooperation of second stator (9) outer surface, and the width of second rotor (10) is slightly littler than the width of second stator (9); Second rotor (10) is installed in second stator (9); One end of second group of blade (16) is put into the blade groove of second rotor (10), and the other end of second group of blade (16) contacts with the internal surface of second stator (9), and second group of blade (16) radially settled along second rotor (10); Second rotor (10) cooperates connection through flat key with the right axle shaft of running shaft (2); The second assembly flow table (8,11) is installed on the running shaft (2), and be pressed on second stator (9) about on two sides, running shaft (2) left half axle is processed spline for one section; Running shaft (2) right axle shaft is processed flat key for one section; The left end of running shaft (2) is installed in through sliding bearing on the left side thrust plate (4) of the first assembly flow table, and the right-hand member of running shaft (2) is installed on the right end cap (12) through sliding bearing, and left end cap (3), right end cap (12) are through being bolted on the housing (1); Running shaft (2), left end cap (3), the first assembly flow table (4,7), first stator (5), the first rotor (6), gear (13), first group of blade (14), motor (17) but composition variable parts (18); The upper left hydraulic fluid port of variable parts (18) is the filler opening (M) of the blade type hydraulic transformer of Electric Machine Control; Running shaft (2), the second assembly flow table (8,11), second stator (9), second rotor (10), right end cap (12), wedge shaped plate (15), second group of blade (16) can be formed quantitative part (19); The upper right hydraulic fluid port of quantitative part (19) is the oil outlet (N) of the blade type hydraulic transformer of Electric Machine Control; Along by the direction of hydraulic transformer filler opening (M) to oil outlet (N); Variable parts (18) are positioned on the left half axle of running shaft (2), and quantitative part (19) is positioned on the right axle shaft of running shaft (2).

2. the blade type hydraulic transformer of Electric Machine Control according to claim 1 is characterized in that, motor (17) is servomotor or stepping motor.

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