CN101696702B - Manual-control double-acting vane hydraulic transformer - Google Patents

Abstract

The invention discloses a manual-control double-acting vane hydraulic transformer comprising a shell, a rotating shaft, a left end cover, valve plates, stators, rotors, a right end cover, vanes, lower end covers, variable plungers, threaded rods, sleeves, upper end covers, handwheels, and the like. The transformer is characterized in that the centers of the two groups of the rotors and the stators are fixed and superposed, the width of the rotors is lightly shorter than that of the stators, the rotors are arranged in the stators, one end of each vane is put in a vane slot of each rotor and the other end contacts the inner surface of each stator; the vanes are arranged along the radial direction of the rotors; the rotors are in joint connection with the left half shaft and the right half shaft of the rotating shaft by splines; the outer rings of the stators are made into a gear shape within 150 degrees by taking the arch center of the longer radius as the center; one side of each variable plunger is machined into a rack shape so as to form a gear transmission pair with the gear stators, the other side of each variable plunger is provided with grooves, and the variable plungers and the threaded rods form transmission pairs; and the valve plates are arranged on the rotating shaft and tightly press the left sides and the right sides of the stators.

Description

The double-acting vane hydraulic transformer of manual control

(1) technical field

The present invention relates to a kind of hydraulic transformer, the double-acting vane hydraulic transformer of a kind of manual 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 invention 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 manual control of mesohigh, middle pressure, mesolow hydraulic system, to enrich the kind of hydraulic transformer, enlarge the application area of hydraulic transformer.

The present invention solves the technological scheme that its technical problem is taked:

A kind of double-acting vane hydraulic transformer of manual 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, 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, and the outer ring of a stator is to make the gear pattern in the 150 ° of scopes in center with inner ring semi major axis center of arc; Stroking mechanism is mainly by lower end cap, variable piston, screw rod, guide pad, sleeve, upper end cap, nut, formations such as handwheel, variable piston is installed in the transformer housing, the tooth bar pattern is processed in a side of variable piston, another side 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, and 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, the screw rod upper end is fixed with handwheel, screw rod can be by nut check on upper end cap, and tooth bar pattern variable piston and a stator constitute gear driving pair, 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 manual control of the present invention compared with prior art, the beneficial effect that is produced is:

(1) the present invention 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 present invention 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) volume of the present invention is little, in light weight, rotary inertia is little, and control is convenient, and control performance is good.

(4) description of drawings

The present invention is further described below in conjunction with drawings and Examples.

Fig. 1 is a structure diagram of the present invention

Fig. 2 is an A-A view of the present invention

Fig. 3 is a B-B view of the present invention

Fig. 4 is a hydraulic fluid port Connecting format schematic representation of the present invention

Fig. 5 is a transformation principle schematic of the present invention

Among the figure: 1. housing, 2. running shaft, 3. left end cap, 4, the 7. first assembly flow table, 5. first stator, 6. the first rotor, 8,11. second assembly flow table, 9. second stators, 10. second rotor, 12. right end caps, 13. first groups of blades, 14. handwheel, 15. nuts, 16. upper end caps, 17. sleeve, 18. guide pads, 19. screw rods, 20. variable piston, 21. lower end caps, 22. second groups of blades

(5) embodiment

Explain below below in conjunction with drawings and Examples the present invention being done.

As shown in Figure 1, 2, 3, the double-acting vane hydraulic transformer of manual control of the present invention mainly is made up of housing 1, running shaft 2, left end cap 3, the first assembly flow table 4,7 and first stator 5, the first rotor 6, the second assembly flow table 8,11 and second stator 9, second rotor 10, right end cap 12, first group of blade 13, lower end cap 21, variable piston 20, screw rod 19, guide pad 18, sleeve 17, upper end cap 16, nut 15, handwheel 14, second group of blade 22 etc.; The center of the first rotor 6 and first stator 5 is fixing and overlaps, the width of the first rotor 6 is slightly littler than the width of first stator 5, the first rotor 6 is installed in first stator 5, one end of first group of blade 13 is put into the blade groove of the first rotor 6, the other end contacts with the internal surface of first stator 5, first group of blade 13 radially settled (being that laying angle is zero) along the first rotor 6, the first 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 the first rotor 6 driven rotary axles; First stator, 5 outer rings are to make the gear pattern in the 150 ° of scopes in center with inner ring semi major axis center of arc; By lower end cap 21, variable piston 20, screw rod 19, guide pad 18, sleeve 17, upper end cap 16, nut 15, handwheel 14 grades constitute stroking mechanism, variable piston 20 is installed in the transformer housing 1, the tooth bar pattern is processed in a side of variable piston 20, another side 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 20, 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 20 by screw rod 19, move down, the variable piston 20 of tooth bar pattern constitutes gear driving pair with first stator 5 of gear pattern, first stator 5 can rotate around the center under the effect of variable piston 20 realizes variable, during invariant, screw rod 19 is locked on the upper end cap 16 lower end cap 21 by nut 15, upper end cap 16 is by being bolted on the housing 1; The first assembly flow table 4,7 is installed on the running shaft 2, and be pressed on first stator 5 about on two sides; The center of second rotor 10 and second stator 9 also is fixing and overlaps, the width of second rotor 10 is slightly littler than the width of second stator 9, second rotor 10 is installed in second stator 9, one end of second group of blade 22 is put into the blade groove of second rotor 10, the other end contacts with the internal surface of second stator 9, second group of blade 22 radially settled along second rotor 10, second rotor 10 cooperates connection by spline with the right axle shaft of running shaft 2, drive 10 rotations of second rotor, pressure oil output by running shaft 2; The second assembly flow table 8,11 is installed on the running shaft 2, and be pressed on second stator 9 about on two sides; Left end cap 3, right end cap 12 are by being bolted on the housing 1.

But by composition variable parts 23 such as running shaft 2, the first rotor 6, first stator 5, lower end cap 21, variable piston 20, screw rod 19, guide pad 18, sleeve 17, upper end cap 16, nut 15, handwheel 14, first group of blade 13, the first assembly flow tables 4,7; Can form quantitative part 24 by running shaft 2, second rotor 10, second stator 9, second group of blade 22, second assembly flow table 8,11 etc.The variable parts 23 of the double-acting vane hydraulic transformer of described manual control and structure, the functional similarity of Double-action Vane Secondary Component, variable parts 23 can be regarded Double-action Vane Secondary Component as; The quantitative part 24 of the double-acting vane hydraulic transformer of described manual control and structure, the functional similarity of quantitative double-action sliding-vane motor, quantitative part 24 can be seen a quantitative double-action sliding-vane motor as; So, the double-acting vane hydraulic transformer of described manual 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 23 is the filler opening of the double-acting vane hydraulic transformer of manual 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 24 is the oil outlet of the double-acting vane hydraulic transformer of manual 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 23 and the following hydraulic fluid port of quantitative part 24 link together, become hydraulic fluid port O of double-acting vane hydraulic transformer of manual 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 23 produce is:

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

The drag torque that quantitative part 24 produces is:

${\mathrm{<figure-callout\; id="2"\; label="T"\; filenames="H200910019241XE00021.png,H200910019241XE00031.png"\; state="\{\{state\}\}">T</figure-callout>}}_2=-\frac{{\mathrm{<figure-callout\; id="2"\; label="V"\; filenames="H200910019241XE00021.png,H200910019241XE00031.png"\; state="\{\{state\}\}">V</figure-callout>}}_2}{2\mathrm{\&pi;}}(p_2-p_0)$

In the formula: V ₁, V ₂Be the discharge capacity of variable parts 23, quantitative part 24, 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 23 and the quantitative part 24, 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, therefore the transformation of the double-acting vane hydraulic transformer of described manual control comes down to regulate discharge capacity V ₁/ V ₂Value because the discharge capacity V of quantitative part 24 ₂Be a fixed value, so be discharge capacity V in the work by Moderator Variable parts 23 ₁Satisfy the needs of load variations.

When the double-acting vane hydraulic transformer of described manual control is not worked, the first rotor 6 of variable parts 23 and second rotor, the 10 equal transfixions of quantitative part 24, variable parts 23 first stator 5 be in initial rotational position (zero point), the discharge capacity V of variable parts 23 ₁Be zero, by formula (1) as can be known, transformation ratio λ equals zero.

During the work of the double-acting vane hydraulic transformer of described manual control, be the variation that adapts to load, rotation hand wheel 14, first stator 5 of variable parts 23 clockwise or be rotated counterclockwise, along with the variation of first stator, 5 angle of swing, the discharge capacity V of variable parts 23 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 first stator, 5 angle of swing of the variable parts 23 of the double-acting vane hydraulic transformer of described manual control is by the displacement decision of variable piston 20, the displacement of variable piston 20 is by the corner control of handwheel 14, by the displacement (size and Orientation) of rotation hand wheel 14 adjustable variables plungers 20.

Claims (2)

1. a double-acting vane hydraulic transformer of manually controlling comprises: housing (1), running shaft (2), left end cap (3), the first assembly flow table (4,7), first stator (5), the first rotor (6), the second assembly flow table (8,11), second stator (9), second rotor (10), right end cap (12), first group of blade (13), handwheel (14), nut (15), upper end cap (16), sleeve (17), guide pad (18), screw rod (19), variable piston (20), lower end cap (21), second group of blade (22); It is characterized in that, the center of the first rotor (6) and first stator (5) is fixing and overlaps, the width of the first rotor (6) is slightly littler than the width of first stator (5), the first rotor (6) is installed in first stator (5), one end of first group of blade (13) is put into the blade groove of the first rotor (6), the other end of first group of blade (13) contacts with the internal surface of first stator (5), first group of blade (13) radially settled along the first rotor (6), the first rotor (6) cooperates connection by spline with the left half axle of running shaft (2), first stator (5) outer ring is to make the gear pattern in the 150 ° of scopes in center with inner ring semi major axis center of arc, variable piston (20) is installed in the transformer housing (1), the tooth bar pattern is processed in a side of variable piston (20), the variable piston of tooth bar pattern (20) constitutes gear driving pair with first stator (5) of gear pattern, another side of variable piston (20) is processed with groove, guide pad (18) is housed on the groove of variable piston (20), the upper end portion of variable piston (20) 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 (20), 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 (21), upper end cap (16) is by being bolted on the housing (1), the first assembly flow table (4,7) be installed on the running shaft (2), and be pressed on first stator (5) about on two sides, the center of second rotor (10) and second stator (9) is fixing and overlaps, the width of second rotor (10) is slightly littler than the width of second stator (9), second rotor (10) is installed in second stator (9), one end of second group of blade (22) is put into the blade groove of second rotor (10), the other end of second group of blade (22) contacts with the internal surface of second stator (9), second group of blade (22) radially settled along second rotor (10), second rotor (10) cooperates connection by spline with the right axle shaft of running shaft (2), the second assembly flow table (8,11) be installed on the running shaft (2), and be pressed on second 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 manual 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 manual 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 manual 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 manually controlling, hydraulic fluid port (O) is connected with fuel tank, and hydraulic fluid port (O) is greater than filler opening (M) and oil outlet (N).

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