CN201526526U - Electric-hydraulic control two-variable and double-acting blade-type hydraulic transformer - Google Patents

Abstract

The utility model relates to an electric-hydraulic control two-variable and 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, blades, a variable piston, a variable rod, a variable cylinder, a gear, a motor and the like. The blade-type hydraulic transformer is characterized in that the centers of the two groups of rotors and stators are fixed and coincided; the blades are radially arranged along the rotors; the rotors are matched and connected with the rotating shaft by splines; the variable cylinder is fixed on the shell by bolts; the spherical head end of the variable rod is connected with a groove of the variable piston; the other end of the variable rod is fixed on the outer surface of the long-radius arc central line position of one stator; the outer ring of another stator is made into a gear form by taking a 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 the output shaft of the motor which is arranged on the shell; the flow-distributing discs are arranged on the rotating shaft and are 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 by bolts.

Description

The bivariate double-acting vane hydraulic transformer of electrichydraulic control

(1) technical field

The utility model relates to a kind of hydraulic transformer, and the bivariate double-acting vane hydraulic transformer of a kind of electrichydraulic control specifically 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 bivariate double-acting vane hydraulic transformer of the electrichydraulic control of mesohigh, middle pressure, mesolow 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 bivariate double-acting vane hydraulic transformer of electrichydraulic control comprises housing, running shaft, left end cap, thrust plate, stator, rotor, right end cap, blade, variable piston, variable bar, variable cylinder body, gear, motor etc.; The center of two group rotors 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 running shaft, the variable cylinder body is by being bolted on the housing, the spherical head end of variable bar connects with the Baltimore groove of variable piston, the other end of variable bar is fixed on the outer surface at semi major axis center of arc line place of a stator, the Baltimore groove of variable piston is made into circular shape or involute shape, another 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 left and right two ends of running shaft are installed on the left and right sides thrust plate by sliding bearing, and left end cap, right end cap are by being bolted on the housing.

The bivariate double-acting vane hydraulic transformer of electrichydraulic 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, 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, 13,18. blades, 14. variable pistons, 15. variable bars, 16. variable cylinder bodies, 17. gears, 19. 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 bivariate double-acting vane hydraulic transformer of electrichydraulic 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, variable piston 14, variable bar 15, variable cylinder body 16, gear 17, motor 19, blade 13,18 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 13 is put into the blade groove of rotor 6, the other end contacts with the internal surface of stator 5, blade 13 is radially settled (being that laying angle is zero) along rotor 6, 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 rotor 6 driven rotary axles 2 rotations, stator 5 can rotate around the center under the drive of variable piston 14, variable cylinder body 16 is by being bolted on the housing 1, the spherical head end of variable bar 15 connects with the Baltimore groove of variable piston 14, the other end of variable bar 15 is fixed on the outer surface at semi major axis center of arc line place of stator 5, and the Baltimore groove of variable piston 14 is made into circular shape or involute shape, and stator 5 rotates around the center and carries out variable under the effect of variable piston 14, thrust plate 4,7 are 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 18 is put into the blade groove of rotor 10, the other end contacts with the internal surface of stator 9, blade 18 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 17, stator 9 clockwise or be rotated counterclockwise and carry out variable under the drive of motor 19, gear 17 is installed on the output shaft of motor 19, motor 19 is installed on the housing 1, 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; The left end of running shaft 2 is installed on the thrust plate 4 of left side by sliding bearing, and the right-hand member of running shaft 2 is installed on the right side thrust plate 11 by sliding bearing, and left end cap 3, right end cap 12 are by being bolted on the housing 1.

But by composition variable parts 20 such as running shaft 2, rotor 6, stator 5, blade 13, variable piston 14, variable bar 15, variable cylinder body 16 and thrust plates 4,7, but by composition variable parts 21 such as running shaft 2, rotor 10, stator 9, gear 17, blade 18, motor 19, thrust plates 8,11.The variable parts 20 of the bivariate double-acting vane hydraulic transformer of described electrichydraulic control, the structure of variable parts 21 and Double-action Vane Secondary Component, functional similarity, variable parts 20,21 can see Double-action Vane Secondary Component as, as shown in Figure 5, so, the bivariate double-acting vane hydraulic transformer of described electrichydraulic control can be regarded as and formed by two secondary component coaxial rigid connection, the filler opening that the upper left hydraulic fluid port M of variable parts 20 is the bivariate double-acting vane hydraulic transformer of electrichydraulic control, 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 21 is the bivariate double-acting vane hydraulic transformer of electrichydraulic control, 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 20 and the following hydraulic fluid port of variable parts 21 link together, become hydraulic fluid port O of bivariate double-acting vane hydraulic transformer of electrichydraulic control, 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 6, in the constant pressure network pressure p ₁Effect under, the active torque that variable parts 20 produce is:

${\mathrm{<figure-callout\; id="1"\; label="T"\; filenames="H2009202262728E00021.png"\; state="\{\{state\}\}">T</figure-callout>}}_1=\frac{{\mathrm{<figure-callout\; id="1"\; label="V"\; filenames="H2009202262728E00021.png"\; state="\{\{state\}\}">V</figure-callout>}}_1}{2\mathrm{\&pi;}}(p_1-p_0)$

The drag torque that variable parts 21 produce is:

${\mathrm{<figure-callout\; id="2"\; label="T"\; filenames="H2009202262728E00021.png,H2009202262728E00031.png"\; state="\{\{state\}\}">T</figure-callout>}}_2=-\frac{{\mathrm{<figure-callout\; id="2"\; label="V"\; filenames="H2009202262728E00021.png,H2009202262728E00031.png"\; state="\{\{state\}\}">V</figure-callout>}}_2}{2\mathrm{\&pi;}}(p_2-p_0)$

In the formula: V ₁, V ₂Be the discharge capacity of variable parts 20, variable parts 21, 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 20 and the variable parts 21, 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:

$\mathrm{\&lambda;}=\frac{p_2}{{\mathrm{<figure-callout\; id="1"\; label="p"\; filenames="H2009202262728E00021.png"\; state="\{\{state\}\}">p</figure-callout>}}_1}=\frac{V_1}{V_2}---\left(1\right)$

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 bivariate double-acting vane hydraulic transformer of described electrichydraulic control comes down to regulate discharge capacity V ₁/ V ₂Value, can distinguish in the work or the discharge capacity V of Moderator Variable parts 20 simultaneously ₁Or the discharge capacity V of variable parts 21 ₂Satisfy the needs of load variations.

When the bivariate double-acting vane hydraulic transformer of described electrichydraulic control is not worked, rotor 6, the 10 equal transfixions of variable parts 20 and variable parts 21, the stator 5 of variable parts 20 is in initial rotational position (zero point), the stator 9 of variable parts 21 can be in the arbitrary position except that zero point, the discharge capacity V of these variations per hour parts 20 ₁Be zero, the discharge capacity V of variable parts 21 ₂Non-vanishing, by formula (1) as can be known, transformation ratio λ equals zero.

When the bivariate double-acting vane hydraulic transformer of described electrichydraulic control is worked, for adapting to the variation of load, under the effect of variable piston 14 and motor 19, the stator 5,9 of variable parts 20,21 clockwise or be rotated counterclockwise, along with the variation of stator 5,9 angle of swing, the discharge capacity V of variable parts 20 ₁Or the discharge capacity V of variable parts 21 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 size and Orientation of the angle of swing of the stator 5 of the variable parts 20 of the bivariate double-acting vane hydraulic transformer of described electrichydraulic control is by the displacement decision of variable piston 14, the displacement of variable piston 14 can be by electro-hydraulic servo (ratio) valve and position transducer control, in the work, displacement by position transducer detection variable piston 14, feed back to controller, send instruction by controller and give electro-hydraulic servo (ratio) valve, the displacement of Moderator Variable piston 14 (size and Orientation); The size and Orientation of the angle of swing of the stator 9 of variable parts 21 is by the corner decision of motor 19 (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 control the umber of pulse that sends to stepping motor, control the angle of swing (size and Orientation) of stator by controller.

Claims (6)

1. the bivariate double-acting vane hydraulic transformer of an electrichydraulic 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), blade (13,18), variable piston (14), variable bar (15), variable cylinder body (16), gear (17), motor (19); 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 (13) is put into the blade groove of rotor (6), the other end of blade (13) contacts with the internal surface of stator (5), blade (13) is radially settled along rotor (6), rotor (6) cooperates connection by spline with the left half axle of running shaft (2), variable cylinder body (16) is by being bolted on the housing (1), the spherical head end of variable bar (15) connects with the Baltimore groove of variable piston (14), the other end of variable bar (15) is fixed on the outer surface at semi major axis center of arc line place of stator (5), 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 (18) is put into the blade groove of rotor (10), the other end of blade (18) contacts with the internal surface of stator (9), blade (18) 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 (17), gear (17) is installed on the output shaft of motor (19), motor (19) is installed on the housing (1), 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); The left end of running shaft (2) is installed on the left side thrust plate (4) by sliding bearing, and the right-hand member of running shaft (2) is installed on the right side thrust plate (11) by sliding bearing, and left end cap (3), right end cap (12) are by being bolted on the housing (1).

2. the bivariate double-acting vane hydraulic transformer of electrichydraulic control according to claim 1 is characterized in that, the Baltimore groove of variable piston (14) is made into circular shape or involute shape.

3. the bivariate double-acting vane hydraulic transformer of electrichydraulic control according to claim 1 is characterized in that, motor (19) is servomotor or stepping motor.

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

5. the bivariate double-acting vane hydraulic transformer of electrichydraulic control according to claim 4 is characterized in that, filler opening (M) is identical with oil outlet (N) size.

6. the bivariate double-acting vane hydraulic transformer of electrichydraulic control according to claim 4 is characterized in that, hydraulic fluid port (O) is greater than filler opening (M) and oil outlet (N).

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