CN201526524U - Electro-hydraulic control double-action blade type hydraulic transformer - Google Patents

Abstract

The utility model relates to an electro-hydraulic control double-action blade type hydraulic transformer comprising a casing, a rotating shaft, a left end cover, a valve plate, stators, rotors, a right end cover, blades, a gear, a motor, a variable oil cylinder and the like. The electro-hydraulic control double-action blade type hydraulic transformer is characterized in that the centers of two groups of rotors and stators are fixed and coincident; the blades are arranged along the radial direction of the rotors; the rotors are coordinately connected with the rotating shaft through splines; the outer ring of one stator takes the long radius circular arc center as the center and is made into a gear mode in the range of 150 degrees, and one stator and the gear form a gear transmission pair; the gear is mounted on an output shaft of the motor, and the motor is mounted on the casing; the variable oil cylinder comprises a piston, an end cover and a variable cylinder body, namely a transformer casing, the variable cylinder body is machined on the transformer casing, the variable piston is made into the mode of a rack, and the rack type variable piston and the other stator form a gear transmission pair; the port plate is mounted on the rotating shaft and presses on the left side and the right side of the stator; and the left end cover and the right end cover are fixed on the casing through bolts.

Description

A kind of double-acting vane hydraulic transformer of electrichydraulic control

(1) technical field

The utility model relates to a kind of hydraulic transformer, and the 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 double-acting vane hydraulic transformer of a kind of 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 double-acting vane hydraulic transformer of electrichydraulic control comprises housing, running shaft, left end cap, thrust plate, stator, rotor, right end cap, blade, gear, motor, variable oil cylinder 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 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, motor is installed on the housing, the variable oil cylinder comprises the variable piston, end cap, the variable cylinder body is the transformer housing, the variable cylinder body processes on the transformer housing, and the variable piston makes the tooth bar form, and rack-type variable piston and another stator constitute the gear transmission width of cloth, 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 double-acting vane hydraulic transformer of a kind 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. gears, 14,16. blades, 15. variable oil cylinders, 15-1. variable piston, 15-2. variable cylinder cover, 17. 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 double-acting vane hydraulic transformer of a kind 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, gear 13, variable oil cylinder 15, motor 17, blade 14,16 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, blade 14 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 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 1, 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 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, variable oil cylinder 15 is by variable piston 15-1, end cap 15-2, the variable cylinder body is transformer housing 1 formation such as grade, the variable cylinder body processes on transformer housing 1, variable piston 15-1 makes the tooth bar form, rack-type variable piston 15-1 and gear type stator 9 constitute the gear transmission width of cloth, and stator 9 can rotate around the center under the effect of variable oil cylinder 15 realizes variable; Thrust plate 8,11 is 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 rotors 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 18 such as running shaft 2, rotor 6, stator 5, gear 13, blade 14, motor 17, thrust plates 4,7, but by composition variable parts 19 such as running shaft 2, rotor 10, stator 9, blade 16, variable oil cylinder 15 and thrust plates 8,11.The variable parts 18 of the double-acting vane hydraulic transformer of described a kind of electrichydraulic control, the structure of variable parts 19 and Double-action Vane Secondary Component, functional similarity, variable parts 18,19 can see Double-action Vane Secondary Component as, as shown in Figure 5, so, the double-acting vane hydraulic transformer of described a kind of 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 18 is a kind of 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 19 is a kind of 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 18 and the following hydraulic fluid port of variable parts 19 link together, become hydraulic fluid port O of double-acting vane hydraulic transformer of a kind 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 18 produce is:

${\mathrm{<figure-callout\; id="1"\; label="T"\; filenames="H2009202262709E00011.png,H2009202262709E00021.png"\; state="\{\{state\}\}">T</figure-callout>}}_1=\frac{{\mathrm{<figure-callout\; id="1"\; label="V"\; filenames="H2009202262709E00011.png,H2009202262709E00021.png"\; state="\{\{state\}\}">V</figure-callout>}}_1}{2\mathrm{\&pi;}}(p_1-p_0)$

The drag torque that variable parts 19 produce is:

${\mathrm{<figure-callout\; id="2"\; label="T"\; filenames="H2009202262709E00011.png,H2009202262709E00021.png"\; state="\{\{state\}\}">T</figure-callout>}}_2=-\frac{{\mathrm{<figure-callout\; id="2"\; label="V"\; filenames="H2009202262709E00011.png,H2009202262709E00021.png"\; state="\{\{state\}\}">V</figure-callout>}}_2}{2\mathrm{\&pi;}}(p_2-p_0)$

In the formula: V ₁, V ₂Be the discharge capacity of variable parts 18, variable parts 19, 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 18 and the variable parts 19, 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:

$\mathrm{\&lambda;}=\frac{p_2}{{\mathrm{<figure-callout\; id="1"\; label="p"\; filenames="H2009202262709E00011.png,H2009202262709E00021.png"\; state="\{\{state\}\}">p</figure-callout>}}_1}=\frac{V_1}{V_2}---\left(1\right)$

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 double-acting vane hydraulic transformer of described a kind of 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 18 simultaneously ₁Or the discharge capacity V of variable parts 19 ₂Satisfy the needs of load variations.

When the double-acting vane hydraulic transformer of described a kind of electrichydraulic control is not worked, rotor 6, the 10 equal transfixions of variable parts 18 and variable parts 19, the stator 5 of variable parts 18 is in initial rotational position (zero point), the stator 9 of variable parts 19 can be in the arbitrary position except that zero point, the discharge capacity V of these variations per hour parts 18 ₁Be zero, the discharge capacity V of variable parts 19 ₂Non-vanishing, by formula (1) as can be known, transformation ratio λ equals zero.

When the double-acting vane hydraulic transformer of described a kind of electrichydraulic control is worked, for adapting to the variation of load, under the effect of motor 17 and variable oil cylinder 15, the stator 5,9 of variable parts 18,19 clockwise or be rotated counterclockwise, along with the variation of stator 5,9 angle of swing, the discharge capacity V of variable parts 18 ₁Or the discharge capacity V of variable parts 19 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 18 of the double-acting vane hydraulic transformer of described a kind of electrichydraulic control is by the corner decision of motor 17 (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; The size and Orientation of the angle of swing of the stator 9 of variable parts 19 is by the displacement decision of variable piston 15-1, the displacement of variable piston 15-1 can be by electro-hydraulic servo (ratio) valve and position transducer control, in the work, displacement by position transducer detection variable piston 15-1, feed back to controller, send instruction by controller and give electro-hydraulic servo (ratio) valve, the displacement (size and Orientation) of Moderator Variable piston 15-1.

Claims (5)

1. the 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), gear (13), blade (14,16), variable oil cylinder (15), motor (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 (14) is put into the blade groove of rotor (6), the other end of blade (14) 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 (19), motor (19) is installed 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) 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 of blade (16) 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, variable oil cylinder (15) comprises variable piston (15-1), end cap (15-2), the variable cylinder body is transformer housing (1), the variable cylinder body processes on transformer housing (1), variable piston (15-1) makes the tooth bar form, rack-type variable piston (15-1) constitutes the gear transmission width of cloth with gear type 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); 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 double-acting vane hydraulic transformer of a kind of electrichydraulic control according to claim 1 is characterized in that, motor (17) is servomotor or stepping motor.

3. the double-acting vane hydraulic transformer of a kind of electrichydraulic control 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 of electrichydraulic control, filler opening (M) is connected with the high voltage terminal of constant pressure network system, upper right hydraulic fluid port (N) is a kind of oil outlet of double-acting vane hydraulic transformer of electrichydraulic control, oil outlet (N) is connected with load end, a hydraulic fluid port of the double-acting vane hydraulic transformer that following hydraulic fluid port is a kind of electrichydraulic control (O), hydraulic fluid port (O) is connected with fuel tank.

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

5. the double-acting vane hydraulic transformer of a kind of electrichydraulic 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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