CN201526531U - Blade-type hydraulic transformer controlled by motor - Google Patents

Abstract

The utility model relates to a blade-type hydraulic transformer controlled by a motor, comprising a shell, a rotating shaft, a left end cover, flow-distributing discs, stators, rotors, a right end cover, a gear, a wedge-shaped plate, blades and the motor and the like. The blade-type hydraulic transformer is characterized in that the centers of a group of rotors and stators are fixed and coincided; the centers of another group of rotors and stators are fixed instead of being coincided; the blades are radially arranged along the rotors; one rotor is matched and connected with a left half shaft of the rotating shaft by a spline, and another rotor is matched and connected with a right half shaft of the rotating shaft by a flat key; the outer ring of one stator is made into a gear form by taking long radius arc center as the center in the range of 150 degrees and forms a gear transmission pair with the gear, and the outer surface of another stator is matched and contacted with the right side surface of the wedge-shaped plate; the flow-distributing discs are arranged on the rotating shaft and tightly pressed on the left side surface and the right side surface of the stator; the left end of the rotating shaft is installed on the left flow-distributing disc, and the right end thereof is installed on the right end cover; and the left end cover and the right end cover are fixed on the shell by a bolt.

Description

The blade type hydraulic transformer of Electric Machine Control

(1) technical field

The utility model relates to a kind of hydraulic transformer, and 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 realizing the pressure conversion in hydraulic transmission.Hydraulic transformer can be converted to output hydraulic pressure energy under the another kind of pressure to the input hydraulic pressure under the setting pressure 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, its working pressure height, more than 20Mpa, range of flow is big, generally be used for high pressure, high-volume hydraulic system, in, use in the low-pressure hydraulic system, efficient is very low, and plunger hydraulic transformer device structure complexity, machining accuracy height, to the oil pollution sensitivity, oil strain required precision height, price are expensive, therefore make the application area of hydraulic transformer be subjected to very big restriction.

(3) model utility content

Technical assignment of the present utility model is at the deficiencies in the prior art, a kind of compact structure is provided, flow is even, noise is little, running accuracy is high and steady, 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, to solve the much smaller problem of load end pressure ratio fuel feeding constant pressure network system pressure, improve the working efficiency of hydraulic system, thereby enlarged the application area of hydraulic transformer, enriched the kind of hydraulic transformer.

The technical scheme in the invention for solving the technical problem:

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, the width of rotor is slightly littler than the width of stator, rotor is installed in the stator, one end of blade is put into the blade groove of rotor, the other end contacts with inner surface of stator, blade is settled along rotor radial, rotor cooperates connection by spline with the left half axle of running shaft, the stator outer ring is to make gear forms in the 150 ° of scopes in center with semi major axis center of arc, stator and gear constitute gear driving pair, and gear is installed on the output shaft of motor, and motor is installed on the housing, 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, centre of rotor does not overlap with the center of stator, certain throw of eccentric is arranged, the wedge shaped plate left surface contacts with the shell inner surface cooperation, the wedge shaped plate right flank contacts with the stator outer surface cooperation, the width of rotor is slightly littler than the width of stator, rotor is installed in the stator, one end of blade is put into the blade groove of rotor, the other end contacts with inner surface of stator, and blade is settled along rotor radial, and rotor cooperates connection by flat key with the right axle shaft of running shaft, thrust plate is installed on the running shaft, and be pressed on stator about on two sides; The running shaft left half axle is made spline for one section, the running shaft right axle shaft is made flat key for one section, the left end of running shaft is installed on the thrust plate of left side by sliding bearing, and the right-hand member of running shaft is installed on the right end cap by sliding bearing, and left end cap, right end cap are by being bolted on the housing.

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

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

(2) the utility model 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 the much smaller problem of load end pressure ratio fuel feeding constant pressure network system pressure, improved the working efficiency of hydraulic system, enlarge the application area of hydraulic transformer, enriched the kind of hydraulic transformer.

(3) the utility model volume 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 drawings and Examples the utility model is further specified.

Fig. 1 is a structure diagram of the present utility model

Fig. 2 is an A-A view of the present utility model

Fig. 3 is a B-B view of the present utility model

Fig. 4 is a C-C view of the present utility model

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

Fig. 6 is a transformation principle schematic of the present utility model

Among the figure: 1. housing, 2. running shaft, 3. left end cap, 4,7,8,11. thrust plates, 5,9. stator, 6,10. rotor, 12. right end caps, 13. gears, 14,16. blades, 15. wedge shaped plates, 17. motors

(5) embodiment

Explain below below in conjunction with drawings and Examples the utility model being done.

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

But, can form quantitative part 19 by running shaft 2, rotor 10, stator 9, wedge shaped plate 15, blade 16, thrust plate 8,11 etc. by composition variable parts 18 such as running shaft 2, rotor 6, stator 5, gear 13, blade 14, motor 17, thrust plates 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 and formed by secondary component and fixed displacement motor coaxial rigid connection, 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, the following hydraulic fluid port of variable parts 18 and the following hydraulic fluid port of quantitative part 19 link together, become 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:

${\mathrm{<figure-callout\; id="1"\; label="T"\; filenames="H200920226279XE00011.png"\; state="\{\{state\}\}">T</figure-callout>}}_1=\frac{{\mathrm{<figure-callout\; id="1"\; label="V"\; filenames="H200920226279XE00011.png"\; state="\{\{state\}\}">V</figure-callout>}}_1}{2\mathrm{\&pi;}}(p_1-p_0)$

The drag torque that quantitative part 19 produces is:

${\mathrm{<figure-callout\; id="2"\; label="T"\; filenames="H200920226279XE00011.png,H200920226279XE00021.png"\; state="\{\{state\}\}">T</figure-callout>}}_2=-\frac{{\mathrm{<figure-callout\; id="2"\; label="V"\; filenames="H200920226279XE00011.png,H200920226279XE00021.png"\; state="\{\{state\}\}">V</figure-callout>}}_2}{2\mathrm{\&pi;}}(p_2-p_0)$

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:

$\mathrm{\&lambda;}=\frac{p_2}{{\mathrm{<figure-callout\; id="1"\; label="p"\; filenames="H200920226279XE00011.png"\; state="\{\{state\}\}">p</figure-callout>}}_1}=\frac{V_1}{V_2}---\left(1\right)$

In the formula: λ is a transformation ratio.

By above derivation as can be seen, transformation ratio is the ratio of hydraulic transformer inlet/outlet pressure, and 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 by 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 equal transfixion of rotor of variable parts 18 and quantitative part 19, the stator of variable parts 18 is in initial rotational position (zero point), the discharge capacity V of variable parts 18 ₁Be zero, by formula (1) as can be known, 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, the stator of variable parts 18 clockwise or be rotated counterclockwise, along with the variation of stator angle of swing, the discharge capacity V of variable parts 18 ₁Also constantly change, by formula (1) as can be known, transformation ratio λ just changes thereupon, realizes transformation, satisfies the needs of load variations.

The size and Orientation of the stator 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 stator 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 stator.

Claims (5)

1. the blade type hydraulic transformer of an Electric Machine Control comprises housing (1), running shaft (2), left end cap (3), thrust plate (4,7,8,11), stator (5,9), rotor (6,10), right end cap (12), gear (13), blade (14,16), wedge shaped plate (15), motor (17); It is characterized in that, the center of rotor (6) and stator (5) is fixing and overlaps, the width of rotor (6) is slightly littler than the width of stator (5), rotor (6) is installed in the stator (5), one end of blade (14) is put into the blade groove of rotor (6), the other end of blade (14) contacts with the internal surface of stator (5), blade (14) is radially settled along rotor (6), rotor (6) cooperates connection by spline with the left half axle of running shaft (2), stator (5) outer ring is to make gear forms in the 150 ° of scopes in center with semi major axis center of arc, stator (5) constitutes gear driving pair with gear (13), gear (13) is installed on the output shaft of motor (17), motor (17) is installed on the housing (1), thrust plate (4,7) be installed on the running shaft (2), and be pressed on stator (5) about on two sides; The center of rotor (10) and stator (9) is all fixed, the center of rotor (10) does not overlap with the center of stator (9), certain throw of eccentric is arranged, wedge shaped plate (15) left surface contacts with the cooperation of housing (1) internal surface, wedge shaped plate (15) right flank contacts with the cooperation of stator (9) outer surface, the width of rotor (10) is slightly littler than the width of stator (9), rotor (10) is installed in the stator (9), one end of blade (16) is put into the blade groove of rotor (10), the other end of blade (16) contacts with the internal surface of stator (9), blade (16) is radially settled along rotor (10), rotor (10) cooperates connection by flat key with the right axle shaft of running shaft (2), thrust plate (8,11) be installed on the running shaft (2), and be pressed on stator (9) about on two sides; Running shaft (2) left half axle is made spline for one section, running shaft (2) right axle shaft is made flat key for one section, the left end of running shaft (2) is installed on the thrust plate (4) by sliding bearing, the right-hand member of running shaft (2) is installed on the right end cap (12) by sliding bearing, and left end cap (3), right end cap (12) are by being bolted on the housing (1).

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.

3. the blade type hydraulic transformer of Electric Machine Control according to claim 1, it is characterized in that, upper left hydraulic fluid port (M) is the filler opening of the blade type hydraulic transformer of Electric Machine Control, filler opening (M) is connected with the high voltage terminal of constant pressure network system, upper right hydraulic fluid port (N) is the oil outlet of the blade type hydraulic transformer of Electric Machine Control, oil outlet (N) is connected with load end, and following hydraulic fluid port (O) is a hydraulic fluid port of the blade type hydraulic transformer of Electric Machine Control, and hydraulic fluid port (O) is connected with fuel tank.

4. the blade type hydraulic transformer of Electric Machine Control according to claim 3 is characterized in that, filler opening (M) is greater than oil outlet (N).

5. the blade type hydraulic transformer of Electric Machine Control according to claim 3 is characterized in that, hydraulic fluid port (O) is greater than filler opening (M).

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