CN201396325Y - Double-action vane type hydraulic transformer controlled by servomotor - Google Patents

Abstract

A double-action vane type hydraulic transformer controlled by a servomotor comprises a quantitative part, a variable part, a shell, a right end cover and a left end cover, the quantitative part and the variable part share a rotary shaft, the spline of a rotor of the quantitative part is suitably jointed with the left spline of the rotary shaft, the spline of a rotor of the variable part is suitably jointed with the right spline of the rotary shaft, the quantitative part and the variable part are mounted in the same shell, and the right end cover and the left end cover are fixed on the shell through bolts. The utility model has the following advantages: the hydraulic transformer can regulate the pressure of a constant pressure network system to any value within the range of the change of load pressure without throttle loss, and can be applied in medium-high pressure, medium-pressure and medium-low pressure hydraulic systems, the application range of the hydraulic transformer is broadened, the variety of the hydraulic transformer is enriched, the size is small, the weight is light, the rotational inertia is low, the dynamic response is quick, and the control performance is good.

Description

The double-acting vane hydraulic transformer of actuating motor control

(1) technical field

The utility model relates to a kind of hydraulic transformer, and specifically a kind of double-acting vane hydraulic transformer of actuating motor control of actuating motor 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) summary of the invention

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, can be applicable to the double-acting vane hydraulic transformer of the actuating motor control of mesohigh, middle pressure, low-pressure hydraulic system, to enrich the kind of hydraulic transformer, enlarge the application area of hydraulic transformer.

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

A kind of double-acting vane hydraulic transformer of actuating motor control comprises quantitative part, variable parts, housing, right end cap, left end cap, the shared same running shaft of quantitative part and variable parts, the rotor of quantitative part connects with the left side spline fitted of running shaft by spline, the rotor of variable parts connects with the right side spline fitted of running shaft by spline, quantitative part and variable parts are installed in the same housing, and right end cap, left end cap are by being bolted on the housing.

The double-acting vane hydraulic transformer of described actuating motor control, quantitative part comprises rotor, stator, blade and thrust plate, 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 left and right thrust plate is installed on the running shaft, and is pressed on two sides of stator.

The double-acting vane hydraulic transformer of described actuating motor control, the variable parts comprise rotor, gear, stator, blade, running shaft, actuating motor and thrust plate, 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, the stator outer ring is to make the gear pattern in the 150 ° of scopes in center with semi major axis center of arc, stator and gear constitute gear driving pair, gear is installed on the output shaft of actuating motor, actuating 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 double-acting vane hydraulic transformer of described actuating motor control, the last hydraulic fluid port of quantitative part is the filler opening of the double-acting vane hydraulic transformer of actuating motor control, filler opening is connected with the high voltage terminal of constant pressure network system, the last hydraulic fluid port of variable parts is the oil outlet of the double-acting vane hydraulic transformer of actuating motor control, oil outlet is connected with load end, the following hydraulic fluid port of quantitative part and the following hydraulic fluid port of variable parts link together, become hydraulic fluid port of double-acting vane hydraulic transformer of actuating motor control, this hydraulic fluid port is connected with fuel tank.

The double-acting vane hydraulic transformer of a kind of actuating motor 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 can be applicable in mesohigh, middle pressure, the mesolow hydraulic system, promptly more than the 7Mpa, in the hydraulic system below the 20Mpa, has enlarged the application area of hydraulic transformer, has enriched the kind of hydraulic transformer.

(3) the utility model volume is little, in light weight, rotary inertia is little, and dynamic response is fast, and control performance is good.

(4) the utility model can be exported energy to load, also can be from load to the accumulator recovered energy.

(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. quantitative part, 2. variable parts, 3. housing, 4. right end cap, 5. running shaft, 6. left end cap, 7. rotor, 8. stator, 9. blade, 10,11,16,17. thrust plates, 12. gears, 13. rotors, 14. stators, 15. blades, 18. actuating motors

(5) embodiment

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

As Fig. 1,2,3, shown in 4, the double-acting vane hydraulic transformer of actuating motor control described in the utility model is mainly by quantitative part 1, variable parts 2, housing 3, right end cap 4, left end cap 6 compositions such as grade, quantitative part 1 and variable parts 2 shared same running shafts 5, the rotor 7 of quantitative part 1 connects with the left side spline fitted of running shaft 5 by spline, the rotor 13 of variable parts 2 connects with the right side spline fitted of running shaft 5 by spline, quantitative part 1 is installed in the same housing 3 right end cap 4 with variable parts 2, left end cap 6 is by being bolted on the housing 3.

Quantitative part 1 mainly is made up of running shaft 5, rotor 7, stator 8, blade 9 and thrust plate 10,11 etc., the width of rotor 7 is slightly littler than the width of stator 8, rotor 7 is installed in the stator 8, one end of blade 9 is put into the blade groove of rotor 7, the other end contacts with the internal surface of stator 8, under the effect of constant pressure network system mesohigh oil, and 5 rotations of rotor 7 driven rotary axles, thrust plate 10,11 is installed on the running shaft 5, and be pressed on stator 8 about on two sides.

Variable parts 2 are mainly by running shaft 5, gear 12, rotor 13, stator 14, blade 15, actuating motor 18 and thrust plate 16,17 compositions such as grade, the width of rotor 13 is slightly littler than the width of stator 14, rotor 13 is installed in the stator 14, one end of blade 15 is put into the blade groove of rotor 13, the other end contacts with the internal surface of stator 14, drive rotor 13 rotations by running shaft 5, pressure oil output, stator 14 outer rings are to make the gear pattern in the 150 ° of scopes in center with semi major axis center of arc, stator 14 constitutes gear driving pair with gear 12, stator 14 clockwise or be rotated counterclockwise and carry out variable under the drive of actuating motor 18, gear 12 is installed on the output shaft of actuating motor 18, actuating motor 18 is installed on the housing 3, thrust plate 16,17 are installed on the running shaft 5, and be pressed on stator 14 about on two sides.

As shown in Figure 5, the quantitative part 1 of the double-acting vane hydraulic transformer of described actuating motor control and structure, the functional similarity of quantitative double-action sliding-vane motor, quantitative part 1 can be seen a quantitative double-action sliding-vane motor as; The variable parts 2 of the double-acting vane hydraulic transformer of described actuating motor control and structure, the functional similarity of Double-action Vane Secondary Component, variable parts 2 can be seen a Double-action Vane Secondary Component as; So, the double-acting vane hydraulic transformer of described actuating motor control can be regarded as and formed by fixed displacement motor and secondary component coaxial rigid connection, the last hydraulic fluid port of quantitative part 1 is the filler opening M of the double-acting vane hydraulic transformer of actuating motor control, filler opening M is connected with the high voltage terminal of constant pressure network system, the last hydraulic fluid port of variable parts 2 is the oil outlet N of the double-acting vane hydraulic transformer of actuating motor control, oil outlet N is connected with load end, the following hydraulic fluid port of quantitative part 1 and the following hydraulic fluid port of variable parts 2 link together, become hydraulic fluid port O of double-acting vane hydraulic transformer of actuating motor control, hydraulic fluid port O is connected with fuel tank.

As shown in Figure 5, in the constant pressure network pressure p ₁Effect under, the active torque that quantitative part 1 produces is:

${\mathrm{<figure-callout\; id="1"\; label="T"\; filenames="Y2009200261480007H1.png,Y2009200261480012H1.png"\; state="\{\{state\}\}">T</figure-callout>}}_1=\frac{{\mathrm{<figure-callout\; id="1"\; label="V"\; filenames="Y2009200261480007H1.png,Y2009200261480012H1.png"\; state="\{\{state\}\}">V</figure-callout>}}_1}{2\mathrm{\&pi;}}(p_1-p_0)$

The drag torque that variable parts 2 produce is:

${\mathrm{<figure-callout\; id="2"\; label="T"\; filenames="Y2009200261480007H1.png,Y2009200261480011H1.png"\; state="\{\{state\}\}">T</figure-callout>}}_2=-\frac{{\mathrm{<figure-callout\; id="2"\; label="V"\; filenames="Y2009200261480007H1.png,Y2009200261480011H1.png"\; state="\{\{state\}\}">V</figure-callout>}}_2}{2\mathrm{\&pi;}}(p_2-p_0)$

In the formula: V ₁, V ₂Be the discharge capacity of quantitative part 1, variable parts 2, 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 1 and the quantitative part 2, 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:

$\mathrm{\&lambda;}=\frac{p_2}{{\mathrm{<figure-callout\; id="1"\; label="p"\; filenames="Y2009200261480007H1.png,Y2009200261480012H1.png"\; state="\{\{state\}\}">p</figure-callout>}}_1}=\frac{V_1}{V_2}---\left(1\right)$

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 the transformation of the double-acting vane hydraulic transformer of therefore described actuating motor control comes down to regulate discharge capacity V ₁/ V ₂Value because the discharge capacity V of quantitative part 1 ₁Be a fixed value, so be discharge capacity V in the work by Moderator Variable parts 2 ₂Satisfy the needs of load variations.

When the double-acting vane hydraulic transformer of described actuating motor control is not worked, the equal transfixion of rotor of quantitative part 1 and variable parts 2, the transformer output flow is zero, and the stator of variable parts 2 is in the arbitrary position except that initial rotational position (zero point).

During the double-acting vane hydraulic transformer work of described actuating motor control, for adapting to the variation of load, under the effect of variable oil cylinder, the stator of variable parts 2 clockwise or be rotated counterclockwise, along with the variation of stator angle of swing, the discharge capacity V of variable parts 2 ₂Also 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 stator 14 angle of swing of the variable parts 2 of the double-acting vane hydraulic transformer of described actuating motor control is by the corner decision of servomotor output shaft, in the work, detect the corner of output shaft by angular displacement sensor, feed back to controller, send instruction by controller and give servomotor, control stator 14 angle of swing (size and Orientation).

Claims (4)

1, a kind of double-acting vane hydraulic transformer of actuating motor control comprises quantitative part (1), variable parts (2), housing (3), right end cap (4), left end cap (6), it is characterized in that, quantitative part (1) and the shared same running shafts of variable parts (2) (5), the rotor (7) of quantitative part (1) connects by the left side spline fitted of spline with running shaft (5), the rotor (13) of variable parts (2) connects by the right side spline fitted of spline with running shaft (5), quantitative part (1) is installed in the same housing (3) right end cap (4) with variable parts (2), left end cap (6) is by being bolted on the housing (3).

2, the double-acting vane hydraulic transformer of actuating motor control according to claim 1, it is characterized in that, quantitative part (1) comprises running shaft (5), rotor (7), stator (8), blade (9) and thrust plate (10,11), the width of rotor (7) is slightly littler than the width of stator (8), rotor (7) is installed in the stator (8), one end of blade (9) is put into the blade groove of rotor (7), the other end contacts with the internal surface of stator (8), thrust plate (10,11) is installed on the running shaft (5), and be pressed on stator (8) about on two sides.

3, the double-acting vane hydraulic transformer of actuating motor control according to claim 1, it is characterized in that, variable parts (2) comprise running shaft (5), gear (12), rotor (13), stator (14), blade (15), actuating motor (18) and thrust plate (16,17), the width of rotor (13) is slightly littler than the width of stator (14), rotor (13) is installed in the stator (14), one end of blade (15) is put into the blade groove of rotor (13), the other end contacts with the internal surface of stator (14), stator (14) outer ring is to make the gear pattern in the 150 ° of scopes in center with semi major axis center of arc, stator (14) constitutes gear driving pair with gear (12), gear (12) is installed on the output shaft of actuating motor (18), actuating motor (18) is installed on the housing (3), thrust plate (16,17) be installed on the running shaft (5), and be pressed on stator (14) about on two sides.

4, the double-acting vane hydraulic transformer of actuating motor control according to claim 1, it is characterized in that, the last hydraulic fluid port of quantitative part (1) is the filler opening of the double-acting vane hydraulic transformer of actuating motor control, filler opening is connected with the high voltage terminal of constant pressure network system, the last hydraulic fluid port of variable parts (2) is the oil outlet of the double-acting vane hydraulic transformer of actuating motor control, oil outlet is connected with load end, the following hydraulic fluid port of the following hydraulic fluid port of quantitative part (1) and variable parts (2) links together, become hydraulic fluid port of double-acting vane hydraulic transformer of actuating motor control, this hydraulic fluid port is connected with fuel tank.

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