CN201526520U - Electric control double-acting blade-type hydraulic transformer - Google Patents

Abstract

The utility model relates to an electric control double-acting blade-type hydraulic transformer comprising a shell, a rotating shaft, a left end cover, flow-distributing discs, stators, rotors, a right end cover, a gear, blades and a motor and the like. The blade-type hydraulic transformer is characterized in that the centers of the rotors and the stators are fixed and 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 the spline; the outer ring of the 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; the gear is arranged on an output shaft of the motor which is arranged on the shell; 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; and the left end cover and the right end cover of the rotating shaft are fixed on the shell through bolts. The electric control double-acting blade-type hydraulic transformer has the benefits of regulating the pressure of a constant-pressure network system into any value in the range of loading pressure change by a mode without throttle loss, and being applied to a middle or high pressure hydraulic system.

Description

Electronic control difunctional vane type hydraulic transformer

(1) technical field

The utility model relates to a kind of hydraulic transformer, and specifically a kind of electronic control difunctional vane type hydraulic transformer 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 electronic control difunctional vane type hydraulic transformer 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 electronic control difunctional vane type hydraulic transformer comprises housing, running shaft, left end cap, thrust plate, stator, rotor, right end cap, gear, blade and motor etc.; The center of 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, a rotor cooperates connection by spline with the left half axle of running shaft, another rotor cooperates connection by spline with the right axle shaft 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, gear is installed on the output shaft of motor, and motor is installed on the housing, and thrust plate is installed on the running shaft, and be pressed on stator about on two sides, left end cap, right end cap is by being bolted on the housing.

Electronic control difunctional vane type hydraulic transformer 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 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 D-D view of the present utility model

Fig. 6 is a hydraulic fluid port Connecting format schematic representation of the present utility model

Fig. 7 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, 13,15. gears, 14,16. blades, 17,18. motors

(5) embodiment

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

Shown in Fig. 1,2,3,4,5, electronic control difunctional vane type hydraulic transformer 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 13,15 and blade 14,16 and motor 17,18 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 3, thrust plate 4,7 is installed on the running shaft 2, and be pressed on stator 5 about on two sides; The center of rotor 10 and stator 9 also is fixing and overlaps, 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 contacts with the internal surface of stator 9, blade 16 is radially settled along rotor 10, stator 9 outer rings are to make gear forms in the 150 ° of scopes in center with semi major axis center of arc, stator 9 constitutes gear driving pair with gear 15, stator 9 clockwise or be rotated counterclockwise and carry out variable under the drive of motor 18, gear 15 is installed on the output shaft of motor 18, motor 18 is installed on the housing 3, thrust plate 8,11 are installed on the running shaft 2, and be pressed on stator 9 about on two sides; Rotor 10 cooperates connection by spline with the right axle shaft of running shaft 2, drives rotor 10 rotations, pressure oil output by running shaft 2; Left end cap 3, right end cap 12 are by being bolted on the housing 1.

But by composition variable parts 19 such as running shaft 2, rotor 6, stator 5, gear 13, blade 14, motor 17, thrust plates 4,7, but by composition variable parts 20 such as running shaft 2, rotor 10, stator 9, gear 15, blade 16, motor 18, thrust plates 8,11.Structure, the functional similarity of the variable parts 19 of described electronic control difunctional vane type hydraulic transformer, variable parts 20 and Double-action Vane Secondary Component, variable parts 19, variable parts 20 can be seen two Double-action Vane Secondary Component as; So, described electronic control difunctional vane type hydraulic transformer can be regarded as and formed by two secondary component coaxial rigid connection, as shown in Figure 6, the filler opening that the upper left hydraulic fluid port M of variable parts 19 is an electronic control difunctional vane type hydraulic transformer, filler opening M is connected with the high-pressure oil passage of constant pressure network system, the oil outlet that the upper right hydraulic fluid port N of variable parts 20 is an electronic control difunctional vane type hydraulic transformer, oil outlet N is connected with load end, filler opening M is identical with oil outlet N size, the following hydraulic fluid port of variable parts 19 and the following hydraulic fluid port of variable parts 20 link together, become hydraulic fluid port O of electronic control difunctional vane type hydraulic transformer, hydraulic fluid port O is connected with fuel tank, hydraulic fluid port O replenishes fluid to hydraulic transformer on the one hand, 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 and oil outlet N.

As shown in Figure 7, in the constant pressure network pressure p ₁Effect under, the active torque that variable parts 19 produce is:

${\mathrm{<figure-callout\; id="1"\; label="T"\; filenames="H2009200289764E00011.png"\; state="\{\{state\}\}">T</figure-callout>}}_1=\frac{{\mathrm{<figure-callout\; id="1"\; label="V"\; filenames="H2009200289764E00011.png"\; state="\{\{state\}\}">V</figure-callout>}}_1}{2\mathrm{\&pi;}}(p_1-p_0)$

The drag torque that variable parts 20 produce is:

${\mathrm{<figure-callout\; id="2"\; label="T"\; filenames="H2009200289764E00011.png,H2009200289764E00021.png"\; state="\{\{state\}\}">T</figure-callout>}}_2=-\frac{{\mathrm{<figure-callout\; id="2"\; label="V"\; filenames="H2009200289764E00011.png,H2009200289764E00021.png"\; state="\{\{state\}\}">V</figure-callout>}}_2}{2\mathrm{\&pi;}}(p_2-p_0)$

In the formula: V ₁, V ₂Be the discharge capacity of variable parts 19, variable parts 20, 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 19 and the variable parts 20, 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:

$\mathrm{\&lambda;}=\frac{p_2}{{\mathrm{<figure-callout\; id="1"\; label="p"\; filenames="H2009200289764E00011.png"\; state="\{\{state\}\}">p</figure-callout>}}_1}=\frac{V_1}{V_2}---\left(1\right)$

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 described electronic control difunctional vane type hydraulic transformer comes down to regulate discharge capacity V ₁/ V ₂Value, can distinguish in the work or the discharge capacity V of Moderator Variable parts 19 simultaneously ₁Or the discharge capacity V of variable parts 20 ₂Satisfy the needs of load variations.

When described electronic control difunctional vane type hydraulic transformer is not worked, the equal transfixion of rotor of variable parts 19 and variable parts 20, the stator of variable parts 19 is in initial rotational position (zero point), the stator of variable parts 20 can be in the arbitrary position except that zero point, the discharge capacity V of these variations per hour parts 19 ₁Be zero, the discharge capacity V of variable parts 20 ₂Non-vanishing, by formula (1) as can be known, transformation ratio λ equals zero.

When described electronic control difunctional vane type hydraulic transformer is worked, for adapting to the variation of load, under the effect of motor, the stator of variable parts 19 or variable parts 20 respectively or simultaneously clockwise or be rotated counterclockwise, along with the variation of stator angle of swing, the discharge capacity V of variable parts 19 ₁Or the discharge capacity V of variable parts 20 ₂Constantly change respectively or simultaneously, by formula (1) as can be known, transformation ratio λ just changes thereupon, realizes transformation, satisfies the needs of load variations.

The variable parts 19 of described electronic control difunctional vane type hydraulic transformer and of the corner decision of the size and Orientation of the stator angle of swing of variable parts 20 by 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 the angle of swing (size and Orientation) of stator, 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. an electronic control difunctional vane type hydraulic transformer 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 (13,15), blade (14,16), motor (17,18); 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 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 (3), 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) also is fixing and overlaps, 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 contacts with the internal surface of stator (9), blade (16) is radially settled along rotor (10), stator (9) outer ring is to make gear forms in the 150 ° of scopes in center with semi major axis center of arc, stator (9) constitutes gear driving pair with gear (15), gear (15) is installed on the output shaft of motor (18), motor (18) is installed on the housing (3), thrust plate (8,11) be installed on the running shaft (2), and be pressed on stator (9) about on two sides; Rotor (10) cooperates connection by spline with the right axle shaft of running shaft (2), and left end cap (3), right end cap (12) are by being bolted on the housing (1).

2. electronic control difunctional vane type hydraulic transformer according to claim 1 is characterized in that, motor (17,18) is servomotor or stepping motor.

3. electronic control difunctional vane type hydraulic transformer according to claim 1, it is characterized in that, upper left hydraulic fluid port (M) is a kind of filler opening of double-acting vane hydraulic transformer, filler opening (M) is connected with the high-pressure oil passage of constant pressure network system, upper right hydraulic fluid port (N) is a kind of oil outlet of double-acting vane hydraulic transformer, oil outlet (N) is connected with load end, and hydraulic fluid port (O) is hydraulic fluid port of a kind of double-acting vane hydraulic transformer, and hydraulic fluid port (O) is connected with fuel tank.

4. electronic control difunctional vane type hydraulic transformer according to claim 2 is characterized in that, filler opening (M) is identical with oil outlet (N) size.

5. electronic control difunctional vane type hydraulic transformer according to claim 2 is characterized in that, hydraulic fluid port (O) is greater than filler opening (M) and oil outlet (N).

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