CN201526533U - Double-variable double-action leaf hydraulic transformer controlled by hydraulic cylinder - Google Patents

Abstract

A double-variable double-action leaf hydraulic transformer controlled by a hydraulic cylinder comprises a housing (1), a rotating shaft (2), a left end cover (3), port plates (4, 7, 8 and 11), stators (5 and 9), rotors (6 and 10), a right end cover (12), leaves (13 and 20), variable pistons (14 and 19), variable rods (15 and 18), variable cylinder bodies (16 and 17) and the like, and is characterized in that the centers of the stator (6) and the rotor (5) are fixed and superposed; the width of the rotor (6) is slightly smaller than that of the stator (5); the rotor (6) is mounted in the stator (5); one end of the leaf (13) is placed in the leaf groove of the rotor (6), and the other end thereof is in contact with the inner surface of the stator (5); the leaf (13) is arranged in the radial direction of the rotor (6); the rotor (6) is in matched connection with the rotating shaft (2) through a spline; the variable cylinder body (16) is fixed on the housing (1) through a bolt; the spherical head end of the variable rod (15) is connected with the concave groove of the variable piston (14); the other end of the variable rod (15) is fixed on the outer surface on the semi-major axis circular-arc center line of the stator (5); the concave groove of the variable piston (14) takes the shape of a circular arc or an evolvent; the port plates (8 and 11) are mounted on the rotating shaft (2), and are compressed against the left and the right side surfaces of the stator (5); and the left and the right end covers (3 and 12) are fixed on the housing (1) through bolts.

Description

The bivariate double-acting vane hydraulic transformer of oil hydraulic cylinder control

(1) technical field

The utility model relates to a kind of hydraulic transformer, and specifically a kind of bivariate double-acting vane hydraulic transformer of oil hydraulic cylinder 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 bivariate double-acting vane hydraulic transformer of the oil hydraulic cylinder 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 oil hydraulic cylinder control comprises housing, running shaft, left end cap, thrust plate, stator, rotor, right end cap, blade, variable piston, variable bar, variable cylinder body 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, and the other end of variable bar is fixed on the outer surface at semi major axis center of arc line place of stator, and the Baltimore groove of variable piston is made into circular shape or involute shape, 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 oil hydraulic cylinder of the present utility model control 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) 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 hydraulic fluid port Connecting format schematic representation of the present utility model

Fig. 5 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, 13,20. blades, 14,19. variable pistons, 15,18. variable bars, 16,17. variable cylinder bodies

(5) embodiment

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

As shown in Figure 1, 2, 3, the bivariate double-acting vane hydraulic transformer of oil hydraulic cylinder described in the utility model control 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, blade 13,20 and variable piston 14,19 and variable bar 15,18 and variable cylinder body 16,17 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 20 is put into the blade groove of rotor 10, the other end contacts with the internal surface of stator 9, blade 20 is radially settled along rotor 10, stator 9 can rotate around the center under the effect of variable piston 19, variable cylinder body 17 is by being bolted on the housing 1, the spherical head end of variable bar 18 connects with the Baltimore groove of variable piston 19, the other end of variable bar 18 is fixed on the outer surface at semi major axis center of arc line place of stator 9, the Baltimore groove of variable piston 19 is made into circular shape or involute shape, stator 9 rotates around the center and carries out variable under the effect of variable piston 19, 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, drive 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 21 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 22 such as running shaft 2, rotor 10, stator 9, blade 20, variable piston 19, variable bar 18, variable cylinder body 17, thrust plates 8,11.The variable parts 21 of the bivariate double-acting vane hydraulic transformer of described oil hydraulic cylinder control, the structure of variable parts 22 and Double-action Vane Secondary Component, functional similarity, variable parts 21,22 can see Double-action Vane Secondary Component as, as shown in Figure 4, so, the bivariate double-acting vane hydraulic transformer of described oil hydraulic cylinder control can be regarded as and formed by two secondary component coaxial rigid connection, the upper left hydraulic fluid port M of variable parts 21 is the filler opening of the bivariate double-acting vane hydraulic transformer of oil hydraulic cylinder control, filler opening M is connected with the high-pressure oil passage of constant pressure network system, the upper right hydraulic fluid port N of variable parts 22 is the oil outlet of the bivariate double-acting vane hydraulic transformer of oil hydraulic cylinder 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 21 and the following hydraulic fluid port of variable parts 22 link together, become hydraulic fluid port O of bivariate double-acting vane hydraulic transformer of oil hydraulic cylinder 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 5, in the constant pressure network pressure p ₁Effect under, the active torque that variable parts 21 produce is:

${\mathrm{<figure-callout\; id="1"\; label="T"\; filenames="H2009202262817E00011.png,H2009202262817E00021.png"\; state="\{\{state\}\}">T</figure-callout>}}_1=\frac{{\mathrm{<figure-callout\; id="1"\; label="V"\; filenames="H2009202262817E00011.png,H2009202262817E00021.png"\; state="\{\{state\}\}">V</figure-callout>}}_1}{2\mathrm{\&pi;}}(p_1-p_0)$

The drag torque that variable parts 22 produce is:

${\mathrm{<figure-callout\; id="2"\; label="T"\; filenames="H2009202262817E00011.png,H2009202262817E00021.png"\; state="\{\{state\}\}">T</figure-callout>}}_2=-\frac{{\mathrm{<figure-callout\; id="2"\; label="V"\; filenames="H2009202262817E00011.png,H2009202262817E00021.png"\; state="\{\{state\}\}">V</figure-callout>}}_2}{2\mathrm{\&pi;}}(p_2-p_0)$

In the formula: V ₁, V ₂Be the discharge capacity of variable parts 21, variable parts 22, 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 21 and the variable parts 22, 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:

$\mathrm{\&lambda;}=\frac{p_2}{{\mathrm{<figure-callout\; id="1"\; label="p"\; filenames="H2009202262817E00011.png,H2009202262817E00021.png"\; state="\{\{state\}\}">p</figure-callout>}}_1}=\frac{V_1}{V_2}---\left(1\right)$

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 bivariate double-acting vane hydraulic transformer of therefore described oil hydraulic cylinder 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 21 simultaneously ₁Or the discharge capacity V of variable parts 22 ₂Satisfy the needs of load variations.

When the bivariate double-acting vane hydraulic transformer of described oil hydraulic cylinder control is not worked, rotor 6, the 10 equal transfixions of variable parts 21 and variable parts 22, the stator 5 of variable parts 21 is in initial rotational position (zero point), the stator 9 of variable parts 22 can be in the arbitrary position except that zero point, the discharge capacity V of these variations per hour parts 21 ₁Be zero, the discharge capacity V of variable parts 22 ₂Non-vanishing, by formula (1) as can be known, transformation ratio λ equals zero.

When the bivariate double-acting vane hydraulic transformer of described oil hydraulic cylinder control is worked, for adapting to the variation of load, under the effect of variable piston 14,19, the stator 5,9 of variable parts 21,22 clockwise or be rotated counterclockwise, along with the variation of stator 5,9 angle of swing, the discharge capacity V of variable parts 21 ₁Or the discharge capacity V of variable parts 22 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 variable parts 21 of the bivariate double-acting vane hydraulic transformer of described oil hydraulic cylinder control, the stator 5,9 of variable parts 22 is by the displacement decision of variable piston 14,19, and the displacement of variable piston 14,19 can be by electro-hydraulic servo (ratio) valve and position transducer control.In the work, the displacement by position transducer detection variable piston 14,19 feeds back to controller, sends instruction by controller and gives electro-hydraulic servo (ratio) valve, difference or the displacement (size and Orientation) of Moderator Variable piston 14,19 simultaneously.

Claims (5)

1. the bivariate double-acting vane hydraulic transformer of an oil hydraulic cylinder 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 (13,20), variable piston (14,19), variable bar (15,18), variable cylinder body (16,17); 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 (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 (20) is put into the blade groove of rotor (10), the other end of blade (20) contacts with the internal surface of stator (9), blade (20) is radially settled along rotor (10), variable cylinder body (17) is by being bolted on the housing (1), the spherical head end of variable bar (18) connects with the Baltimore groove of variable piston (19), the other end of variable bar (18) is fixed on the outer surface at semi major axis center of arc line place of stator (9), 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); 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 oil hydraulic cylinder control according to claim 1 is characterized in that the Baltimore groove of variable piston (14,19) is made into circular shape or involute shape.

3. the bivariate double-acting vane hydraulic transformer of oil hydraulic cylinder 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 oil hydraulic cylinder 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 oil hydraulic cylinder control, oil outlet (N) is connected with load end, following hydraulic fluid port is a hydraulic fluid port of bivariate double-acting vane hydraulic transformer (O) of oil hydraulic cylinder control, and hydraulic fluid port (O) is connected with fuel tank.

4. the bivariate double-acting vane hydraulic transformer of oil hydraulic cylinder control according to claim 3 is characterized in that, filler opening (M) is identical with oil outlet (N) size.

5. the bivariate double-acting vane hydraulic transformer of oil hydraulic cylinder control according to claim 3 is characterized in that hydraulic fluid port (O) is greater than filler opening (M) and oil outlet (N).

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