CN201526534U - Mechanic-hydraulic controlled double-acting blade type hydraulic transformer - Google Patents

Abstract

A mechanic-hydraulic controlled double-acting blade type hydraulic transformer comprises a casing, a rotating shaft, a left end cap, port plates, stators, rotors, a right end cap, blades, variable cylinders and the like. The mechanic-hydraulic controlled double-acting blade type hydraulic transformer is characterized in that centers of two sets of rotors and stators are fixed and coincided, the blades are arranged along radial directions of the rotors, the rotors are in matching connection with the rotating shaft via splines, an outer circle of one of the stator is processed into a gear form by utilizing a long radius arc center as the center within a range of 150 degree, each variable cylinder comprises a variable piston, an end cap and a variable cylinder body namely a transformer casing, the variable cylinder body is processed on the transformer casing, the variable piston is processed into the shape of a rack, the rack type variable plunger and one stator form a gear transmission pair, the port plates are mounted on the rotating shaft and closely pressed on left and right lateral surfaces of each of stators, and the left end cap and the right end cap are fixed on the casing via bolts.

Description

The double-acting vane hydraulic transformer of machine hydraulic control system

(1) technical field

The utility model relates to a kind of hydraulic transformer, and specifically a kind of double-acting vane hydraulic transformer of machine hydraulic control system 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 machine hydraulic control system 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 machine hydraulic control system comprises housing, running shaft, left end cap, thrust plate, stator, rotor, right end cap, blade, 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, 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; 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 machine hydraulic control system 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, 14,15. blades

(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 machine hydraulic control system 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, blade 14,15 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 15 is put into the blade groove of rotor 10, blade 15 the other ends contact with the internal surface of stator 9, blade 15 is radially settled along rotor 10, 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, 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, can form quantitative part 17 by running shaft 2, rotor 10, stator 9, blade 15, thrust plate 8,11 etc. by composition variable parts 16 such as running shaft 2, rotor 6, stator 5, blade 14, variable oil cylinder 13 and thrust plates 4,7.The variable parts 16 of the double-acting vane hydraulic transformer of described machine hydraulic control system and structure, the functional similarity of Double-action Vane Secondary Component, variable parts 16 can be seen Double-action Vane Secondary Component as, the quantitative part 17 of the double-acting vane hydraulic transformer of described machine hydraulic control system and structure, the functional similarity of quantitative double-action sliding-vane motor, quantitative part 17 can be seen a quantitative double-action sliding-vane motor as; As shown in Figure 4, so, the double-acting vane hydraulic transformer of described machine hydraulic control system can be regarded as and formed by secondary component and fixed displacement motor coaxial rigid connection, the filler opening that the upper left hydraulic fluid port M of variable parts 16 is the double-acting vane hydraulic transformer of machine hydraulic control system, 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 quantitative part 17 is the double-acting vane hydraulic transformer of machine hydraulic control system, 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 16 and the following hydraulic fluid port of quantitative part 17 link together, become hydraulic fluid port O of double-acting vane hydraulic transformer of machine hydraulic control system, 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 16 produce is:

${\mathrm{<figure-callout\; id="1"\; label="T"\; filenames="H2009202262821E00011.png"\; state="\{\{state\}\}">T</figure-callout>}}_1=\frac{{\mathrm{<figure-callout\; id="1"\; label="V"\; filenames="H2009202262821E00011.png"\; state="\{\{state\}\}">V</figure-callout>}}_1}{2\mathrm{\&pi;}}(p_1-p_0)$

The drag torque that quantitative part 17 produces is:

${\mathrm{<figure-callout\; id="2"\; label="T"\; filenames="H2009202262821E00011.png,H2009202262821E00031.png"\; state="\{\{state\}\}">T</figure-callout>}}_2=-\frac{{\mathrm{<figure-callout\; id="2"\; label="V"\; filenames="H2009202262821E00011.png,H2009202262821E00031.png"\; state="\{\{state\}\}">V</figure-callout>}}_2}{2\mathrm{\&pi;}}(p_2-p_0)$

In the formula: V ₁, V ₂Be the discharge capacity of variable parts 16, quantitative part 17, 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 16 and the quantitative part 17, 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:

$\mathrm{\&lambda;}=\frac{p_2}{{\mathrm{<figure-callout\; id="1"\; label="p"\; filenames="H2009202262821E00011.png"\; state="\{\{state\}\}">p</figure-callout>}}_1}=\frac{V_1}{V_2}---\left(1\right)$

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 machine hydraulic control system comes down to regulate discharge capacity V ₁/ V ₂Value because the discharge capacity V of quantitative part 17 ₂Be a fixed value, so be discharge capacity V in the work by Moderator Variable parts 16 ₁Satisfy the needs of load variations.

When the double-acting vane hydraulic transformer of described machine hydraulic control system is not worked, rotor 6, the 10 equal transfixions of variable parts 16 and quantitative part 17, the stator 5 of variable parts 16 is in initial rotational position (zero point), the discharge capacity V of these variations per hour parts 16 ₁Be zero, by formula (1) as can be known, transformation ratio λ equals zero.

When the double-acting vane hydraulic transformer of described machine hydraulic control system is worked, for adapting to the variation of load, under the effect of variable oil cylinder 13, the stator 5 of variable parts 16 clockwise or be rotated counterclockwise, along with the variation of stator 5 angle of swing, the discharge capacity V of variable parts 16 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 the angle of swing of the stator 5 of the variable parts 16 of the double-acting vane hydraulic transformer of described machine hydraulic control system is by the displacement decision of variable piston 13-1, the displacement of variable piston 13-1 can be by electro-hydraulic servo (ratio) valve and position transducer control, in the work, displacement by position transducer detection variable piston 13-1, feed back to controller, send instruction by controller and give electro-hydraulic servo (ratio) valve, the displacement (size and Orientation) of Moderator Variable piston 13-1.

Claims (4)

1. the double-acting vane hydraulic transformer of a machine hydraulic control system 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 (14,15); 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 (15) is put into the blade groove of rotor (10), the other end of blade (15) contacts with the internal surface of stator (9), blade (15) is radially settled along rotor (10), 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); 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 machine hydraulic control system 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 machine hydraulic control system, filler opening (M) is connected with the high voltage terminal of constant pressure network system, upper right hydraulic fluid port (N) is the oil outlet of the double-acting vane hydraulic transformer of machine hydraulic control system, 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 machine hydraulic control system (O), hydraulic fluid port (O) is connected with fuel tank.

3. the double-acting vane hydraulic transformer of machine hydraulic control system according to claim 2 is characterized in that, filler opening (M) is identical with oil outlet (N) size.

4. the double-acting vane hydraulic transformer of machine hydraulic control system according to claim 2 is characterized in that, hydraulic fluid port (O) is greater than filler opening (M) and oil outlet (N).

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