CN201526523U - Double-action blade type hydraulic transformer controlled by hydraulic cylinder - Google Patents

Abstract

A double-action blade type hydraulic transformer controlled by hydraulic cylinder comprises a housing, a rotating shaft, a left end cover, valve plates, stators, rotors, a right end cover, blades, a variable cylinder, a variable piston, etc. The utility model is characterized in that: the centers of two groups of rotors and stators are fixed and superposed; the blades are arranged along the radial direction of the rotors; the rotors are matched and connected with the rotating shaft through splines; the outer ring of one stator is manufactured to a gear form in a range of 150 DEG while a center of a long-radius arc is used as a center; the variable piston is manufactured to a rack shape; the rack-shaped variable piston and one stator form a gear transmission pair; the variable cylinder is fixed to the housing through bolts; a spherical head end of a variable rod is connected with a dent groove of the variable piston; the other end of the variable rod is fixed to an external surface of the other stator at the central line of a large-radius arc; the valve plates are equipped on the rotating shaft and tightly presses a left side surface and a right surface of a stator; the left end cover and the right cover are fixed to the housing through bolts.

Description

A kind of 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 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 double-acting vane hydraulic transformer of a kind of 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 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 oil cylinder, 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, a stator outer ring is to make gear forms in the 150 ° of scopes in center with semi major axis center of arc, 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 stator constitute the gear transmission width of cloth; 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 another stator, 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 double-acting vane hydraulic transformer of a kind of oil hydraulic cylinder 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, 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. variable oil cylinders, 13-1. variable piston, 13-2. variable cylinder cover, 14,18. blades, 15. variable cylinder bodies, 16. variable bars, 17. variable pistons

(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 a kind of oil hydraulic cylinder 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 oil cylinder 13, variable cylinder body 15, variable bar 16, variable piston 17, blade 14,18 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 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 (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, variable oil cylinder 13 is by variable piston 13-1, end cap 13-2, the variable cylinder body is transformer housing 1 formation such as grade, the variable cylinder body processes on transformer housing 1, variable piston 13-1 makes the tooth bar form, rack-type variable piston 13-1 and gear type stator 5 constitute the gear transmission width of cloth, stator 5 can rotate around the center under the effect of variable oil cylinder 13 realizes variable, 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, blade 18 the other ends contact with the internal surface of stator 9, blade 18 is radially settled along rotor 10, stator 9 can rotate around the center under the effect of variable piston 17, variable cylinder body 15 is by being bolted on the housing 1, the spherical head end of variable bar 16 connects with the Baltimore groove of variable piston 17, the other end of variable bar 16 is fixed on the outer surface at semi major axis center of arc line place of stator 9, the Baltimore groove of variable piston 17 is made into circular shape or involute shape, stator 9 rotates around the center and carries out variable under the effect of variable piston 17, 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 19 such as running shaft 2, rotor 6, stator 5, blade 14, variable oil cylinder 13 and thrust plates 4,7, but by composition variable parts 20 such as running shaft 2, rotor 10, stator 9, variable cylinder body 15, variable bar 16, variable piston 17, blade 18 thrust plates 8,11.The variable parts 19 of the double-acting vane hydraulic transformer of described a kind of oil hydraulic cylinder control, the structure of variable parts 20 and Double-action Vane Secondary Component, functional similarity, variable parts 19,20 can see Double-action Vane Secondary Component as, as shown in Figure 4, so, the double-acting vane hydraulic transformer of described a kind of 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 19 is a kind of filler opening of 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 20 is a kind of oil outlet of 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 19 and the following hydraulic fluid port of variable parts 20 link together, become hydraulic fluid port O of double-acting vane hydraulic transformer of a kind 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 19 produce is:

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

The drag torque that variable parts 20 produce is:

${\mathrm{<figure-callout\; id="2"\; label="T"\; filenames="H2009202262696E00011.png,H2009202262696E00031.png"\; state="\{\{state\}\}">T</figure-callout>}}_2=-\frac{{\mathrm{<figure-callout\; id="2"\; label="V"\; filenames="H2009202262696E00011.png,H2009202262696E00031.png"\; state="\{\{state\}\}">V</figure-callout>}}_2}{2\mathrm{\&pi;}}(p_2-p_0)$

In the formula: V ₁, V ₂Be the discharge capacity of variable parts 19, variable parts 20, 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 19 and the variable parts 20, 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 a kind of 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 19 simultaneously ₁Or the discharge capacity V of variable parts 20 ₂Satisfy the needs of load variations.

When the double-acting vane hydraulic transformer of described a kind of oil hydraulic cylinder control is not worked, rotor 6, the 10 equal transfixions of variable parts 19 and variable parts 20, the stator 5 of variable parts 19 is in initial rotational position (zero point), the stator 9 of variable parts 20 can be in the arbitrary position except that zero point, the discharge capacity V of these variations per hour parts 19 ₁Be zero, the discharge capacity V of variable parts 20 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 oil hydraulic cylinder control is worked, for adapting to the variation of load, under the effect of variable oil cylinder 13 and variable piston 17, the stator 5,9 of variable parts 19,20 clockwise or be rotated counterclockwise, along with the variation of stator 5,9 angle of swing, the discharge capacity V of variable parts 19 ₁Or the discharge capacity V of variable parts 20 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 5,9 of the variable parts 19,20 of the double-acting vane hydraulic transformer of described a kind of oil hydraulic cylinder control is by variable piston 13-1,17 displacement decision, variable piston 13-1,17 displacement can be by electro-hydraulic servo (ratio) valve and position transducer control, in the work, by position transducer detection variable piston 13-1,17 displacement, feed back to controller, send instruction by controller and give electro-hydraulic servo (ratio) valve, Moderator Variable piston 13-1,17 displacement (size and Orientation).

Claims (5)

1. the 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), variable oil cylinder (13), blade (14,18), variable cylinder body (15), variable bar (16), variable piston (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, variable oil cylinder (13) comprises variable piston (13-1), end cap (13-2), the variable cylinder body is transformer housing (1), the variable cylinder body processes on transformer housing (1), variable piston (13-1) makes the tooth bar form, rack-type variable piston (13-1) constitutes the gear transmission width of cloth with gear type 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), variable cylinder body (15) is by being bolted on the housing (1), the spherical head end of variable bar (16) connects with the Baltimore groove of variable piston (17), the other end of variable bar (16) 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); 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 oil hydraulic cylinder control according to claim 1 is characterized in that the Baltimore groove of variable piston (17) is made into circular shape or involute shape.

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

4. the double-acting vane hydraulic transformer of a kind 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 double-acting vane hydraulic transformer of a kind 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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