CN201526538U - Mechanical controlled double-acting blade type hydraulic transformer - Google Patents

Abstract

A mechanical controlled double-acting blade type hydraulic transformer comprises a casing, a rotating shaft, a left end cap, port plates, stators, rotators, a right end cap, blades, a lower end cap, variable plungers, a screw stem, a sleeve, an upper end cap, a hand wheel and the like. The mechanical controlled double-acting blade type hydraulic transformer is characterized in that centers of the two sets of rotors and stators are fixed and coincided, the width of each rotor is slightly smaller than that of each stator, the rotors are mounted in the stators, one end of each blade is arranged in a blade groove of each rotor while the other end contacts with the inner surface of each stator, the blades are arranged along radial directions of the rotors, the rotors are connected with left and right half axles of the rotating shaft via splines, one lateral surface of each variable plunger is processed with a groove to be connected with a spherical end of the variable rod, the other end of the variable rod is fixed on the outer surface at the long radius arc center line of one of the stators, the other lateral surface of each variable plunger is processed with a groove, one of the variable plungers and the valve stem form a transmission pair, the port plates are mounted on the rotating shaft and closely pressed on left and right lateral surfaces of each of the stators.

Description

The double-acting vane hydraulic transformer of machinery 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 machinery 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 machinery 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 double-acting vane hydraulic transformer of machinery control mainly is made up of housing, running shaft, left end cap, thrust plate, stator, rotor, right end cap, blade, lower end cap, variable piston, variable bar, screw rod, sleeve, upper end cap, handwheel etc.; The center of two group rotors and stator all 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, and rotor cooperates connection by spline with the left and right half of running shaft; Stroking mechanism is mainly by lower end cap, variable piston, the variable bar, screw rod, guide pad, sleeve, upper end cap, nut, formations such as handwheel, variable piston is installed in the transformer housing, the concave groove of circular shape or involute shape is processed in a side of variable piston, connect with the spherical head end of variable bar, the other end of variable bar is fixed on the outer surface at semi major axis center of arc line place of stator, another side of variable piston also is processed with groove, guide pad is housed on it, the upper end portion of variable piston is processed with internal thread, the lower end of screw rod is processed as outside thread, constitute transmission with variable piston, sleeve is housed on the screw rod, sleeve is contained in the transformer housing, the upper-end surface of sleeve contacts with the lower surface cooperation of screw rod convex shoulder, and the upper surface of screw rod convex shoulder contacts with upper end cap mounted thereto cooperation, and the screw rod upper end is fixed with handwheel, screw rod can be by nut check on upper end cap, lower end cap, upper end cap is by being bolted on the housing; Thrust plate is installed on the running shaft, and be pressed on stator about on two sides, left end cap, right end cap are by being bolted on the housing.

The double-acting vane hydraulic transformer of machinery 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 control is convenient, 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 cap, 13,23. blades, 14. handwheels, 15. nuts, 16. upper end caps, 17. sleeves, 18. guide pad, 19. screw rods, 20. variable bars, 21. variable pistons, 22. lower end caps

(5) embodiment

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

As shown in Figure 1, 2, 3, the double-acting vane hydraulic transformer of machinery 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, lower end cap 22, variable piston 21, variable bar 20, screw rod 19, guide pad 18, sleeve 17, upper end cap 16, nut 15, handwheel 14, blade 13,23 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, and blade 13 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; By lower end cap 22, variable piston 21, variable bar 20, screw rod 19, guide pad 18, sleeve 17, upper end cap 16, nut 15, handwheel 14 grades constitute stroking mechanism, variable piston 21 is installed in the transformer housing 1, the concave groove of circular shape or involute shape is processed in a side of variable piston 21, connect with the spherical head end of variable bar 20, the other end of variable bar 20 is fixed on the outer surface at semi major axis center of arc line place of stator 5, another side of variable piston 21 also is processed with groove, guide pad 18 is housed on it, guide pad 18 can slide in the guiding groove of transformer housing 1 processing, play guiding and prevent that variable piston 20 from rotating, the upper end portion of variable piston 20 is processed with internal thread, the lower end of screw rod 19 is processed as outside thread, constitute transmission with variable piston 21, sleeve 17 is housed on the screw rod 19, sleeve 17 is contained in the transformer housing 1, the upper-end surface of sleeve 17 contacts with the lower surface cooperation of screw rod 19 convex shoulders, the upper surface of screw rod 19 convex shoulders contacts with upper end cap mounted thereto 16 cooperations, screw rod 19 can only rotate and not move up and down, screw rod 19 upper ends are fixed with handwheel 14, clockwise, being rotated counterclockwise handwheel 14 can drive on the variable piston 21 by screw rod 19, move down, under the effect of variable piston 21, stator 5 can rotate around the center realizes variable, during invariant, screw rod 19 is locked on the upper end cap 16 lower end cap 22 by nut 15, upper end cap 16 is by being bolted 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; 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 23 is put into the blade groove of rotor 10, the other end contacts with the internal surface of stator 9, and blade 23 is radially settled along rotor 10, and 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; Thrust plate 8,11 is installed on the running shaft 2, and be pressed on stator 9 about on two sides; Left end cap 3, right end cap 12 are by being bolted on the housing 1.

But, can form quantitative part 25 by running shaft 2, rotor 10, stator 9, blade 23, thrust plate 8,11 etc. by composition variable parts 24 such as running shaft 2, rotor 6, stator 5, lower end cap 22, variable piston 21, variable bar 20, screw rod 19, guide pad 18, sleeve 17, upper end cap 16, nut 15, handwheel 14, blade 13, thrust plates 4,7.The variable parts 24 of the double-acting vane hydraulic transformer of described machinery control and structure, the functional similarity of Double-action Vane Secondary Component, variable parts 24 can be regarded Double-action Vane Secondary Component as; The quantitative part 25 of the double-acting vane hydraulic transformer of described machinery control and structure, the functional similarity of quantitative double-action sliding-vane motor, quantitative part 25 can be seen a quantitative double-action sliding-vane motor as; So, the double-acting vane hydraulic transformer of described machinery control can be regarded as and formed by secondary component and fixed displacement motor coaxial rigid connection, as shown in Figure 4, the upper left hydraulic fluid port M of variable parts 24 is the filler opening of the double-acting vane hydraulic transformer of machinery 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 quantitative part 25 is the oil outlet of the double-acting vane hydraulic transformer of machinery 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 24 and the following hydraulic fluid port of quantitative part 25 link together, become hydraulic fluid port O of double-acting vane hydraulic transformer of machinery 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 24 produce is:

$T_1=\frac{V_1}{2\mathrm{\π}}(p_1-p_0)$

The drag torque that quantitative part 25 produces is:

${\mathrm{<figure-callout\; id="2"\; label="T"\; filenames="H2009202394661E00011.png,H2009202394661E00021.png"\; state="\{\{state\}\}">T</figure-callout>}}_2=-\frac{{\mathrm{<figure-callout\; id="2"\; label="V"\; filenames="H2009202394661E00011.png,H2009202394661E00021.png"\; state="\{\{state\}\}">V</figure-callout>}}_2}{2\mathrm{\&pi;}}(p_2-p_0)$

In the formula: V ₁, V ₂Be the discharge capacity of variable parts 24, quantitative part 25, 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 24 and the quantitative part 25, 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:

$\mathrm{\&lambda;}=\frac{p_2}{p_1}=\frac{V_1}{V_2}---\left(1\right)$

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 machinery control comes down to regulate discharge capacity V ₁/ V ₂Value because the discharge capacity V of quantitative part 25 ₂Be a fixed value, so be discharge capacity V in the work by Moderator Variable parts 24 ₁Satisfy the needs of load variations.

When the double-acting vane hydraulic transformer of described machinery control is not worked, the equal transfixion of rotor of variable parts 24 and quantitative part 25, the stator of variable parts 24 is in initial rotational position (zero point), the discharge capacity V of variable parts 24 ₁Be zero, by formula (1) as can be known, transformation ratio λ equals zero.

During the double-acting vane hydraulic transformer work of described machinery control, be the variation that adapts to load, rotation hand wheel 14, the stator of variable parts 24 clockwise or be rotated counterclockwise, along with the variation of stator angle of swing, the discharge capacity V of variable parts 24 ₁Constantly 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 5 angle of swing of the variable parts 24 of the double-acting vane hydraulic transformer of described machinery control is by the displacement decision of variable piston 21, the displacement of variable piston 21 is by the corner control of handwheel 14, by the displacement (size and Orientation) of rotation hand wheel 14 adjustable variables plungers 21.

Claims (2)

1. the double-acting vane hydraulic transformer of a machinery 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 (13,23), handwheel (14), nut (15), upper end cap (16), sleeve (17), guide pad (18), screw rod (19), variable bar (20), variable piston (21), lower end cap (22); 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 piston (21) is installed in the transformer housing (1), the concave groove of circular shape or involute shape is processed in a side of variable piston (21), the concave groove of variable piston (21) connects with the spherical head end of variable bar (20), the other end of variable bar (20) is fixed on the outer surface at semi major axis center of arc line place of stator (5), another side of variable piston (21) is processed with groove, guide pad (18) is housed on the groove of variable piston (21), the upper end portion of variable piston (21) is processed as internal thread, the lower end of screw rod (19) is processed as outside thread, screw rod (19) constitutes transmission with variable piston (21), sleeve (17) is housed on the screw rod (19), sleeve (17) is installed in the transformer housing (1), the upper-end surface of sleeve (17) contacts with the lower surface cooperation of screw rod (19) convex shoulder, the upper surface of screw rod (19) convex shoulder cooperates with upper end cap (16) on being installed in screw rod (19) and contacts, screw rod (19) upper end is fixed with handwheel (14), screw rod (19) can be locked on the upper end cap (16) by nut (15), lower end cap (22), upper end cap (16) is by being bolted 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 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 (23) is put into the blade groove of rotor (10), the other end of blade (23) contacts with the internal surface of stator (9), blade (23) is radially settled along rotor (10), rotor (10) cooperates connection by spline 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, left end cap (3), right end cap (12) is by being bolted on the housing (1).

2. the double-acting vane hydraulic transformer of machinery control according to claim 1, it is characterized in that, upper left hydraulic fluid port (M) is the filler opening of the double-acting vane hydraulic transformer of machinery 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 double-acting vane hydraulic transformer of machinery control, oil outlet (N) is connected with load end, filler opening (M) is identical with oil outlet (N) size, following hydraulic fluid port is a hydraulic fluid port of double-acting vane hydraulic transformer (O) of machinery control, hydraulic fluid port (O) is connected with fuel tank, and hydraulic fluid port (O) is greater than filler opening (M) and oil outlet (N).

Images