CN101666335B - Manually controlled, bivariate and single-acting blade-type hydraulic transformer - Google Patents

Abstract

The invention relates to a manually controlled, bivariate and single-acting blade-type hydraulic transformer, comprising a shell, a rotating shaft, a left end cap, a valve plate, stators, rotors, an upper end cap, a right end cap, blades, pre-tightening adjusting screws, eccentric adjusting screws, nuts, pre-tightening springs, a variable plunger piston, and the like. The hydraulic transformer is characterized in that the centers of the two groups of rotors are fixed, the centers of the stators can be positioned on the left sides or the right sides of the centers of the rotors; the blades are arranged along the radial direction of the rotors, the rotors are matched and connected with the rotating shaft by flat keys, the right surface of one stator contacts with the left end of the variable plunger piston, the left surface contacts with the right end of a sliding seat and the left surface of the other stator contacts with the right end of the variable plunger piston and the right surface contacts with the left end of a sliding seat; and the valve plate is installed on the rotating shaft and is tightly pressed on the left lateral face and the right lateral face of each stator, the left end and the right end of the rotating shaft are installed on the left end cap and the right end cap by sliding bearings, and the upper end cap, the left end cap and the right end cap are fixed on the shell by bolts.

Description

The bivariate single-acting blade-type hydraulic transformer of manual control

(1) technical field

The present invention relates to a kind of hydraulic transformer, the bivariate single-acting blade-type 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, reliable performance and steadily, be applied to the bivariate single-acting blade-type hydraulic transformer of manual control of the low-pressure hydraulic system of the frequent or field work of transformation, 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 bivariate single-acting blade-type hydraulic transformer of manual control comprises that housing, left end cap, running shaft, thrust plate, rotor, stator, blade, press table, roller, top board, upper end cap, right end cap, left cover, right cover plate, pretightening force are adjusted screw, off-centre is adjusted screw, nut, spring seat, preloading spring, slide, variable piston etc.The center of one group rotor is fixed, the center of stator can be in the left side or the right side of rotor center, 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, and blade is settled along rotor radial, and rotor cooperates connection by flat key with the left half axle of running shaft; The left end of variable piston contacts with the right surface of stator, the right-hand member of variable piston contacts with the eccentric left end head of adjusting screw, and variable piston is installed in the housing, and the eccentric screw of adjusting is installed in the right cover plate, and be fastened on the right cover plate by a nut, right cover plate is installed on the housing by bolt; The right-hand member of slide contacts with the left surface of stator, slide is installed in the housing, one end of preloading spring is put into slide, the other end of preloading spring is placed on the spring seat, spring seat contacts with the right-hand member head that pretightening force is adjusted screw, pretightening force is adjusted screw and is installed in the left cover, and is fastened on the left cover by another nut, and left cover is installed on the housing by bolt; Preloading spring had a certain size pretightening force when centre of rotor overlapped with the center of stator; Top board by Bolt Connection on upper end cap, press table contacts with the stator external surface cooperation, roller is installed between top board and the press table, roller contacts with the lower surface of top board and the upper surface cooperation of press table, thrust plate is installed on the running shaft, and be pressed on stator about on two sides.The center of another group rotor is also fixed, the center of stator can be in the left side or the right side of rotor center, 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, and blade is settled along rotor radial, and rotor cooperates connection by flat key with the right axle shaft of running shaft; The right-hand member of variable piston contacts with the left surface of stator, the left end of variable piston contacts with the eccentric right-hand member head of adjusting screw, and variable piston is installed in the housing, and the eccentric screw of adjusting is installed in the left cover, and be fastened on the left cover by a nut, left cover is installed on the housing by bolt; The left end of slide contacts with the right surface of stator, slide is installed in the housing, one end of preloading spring is put into slide, the other end of preloading spring is placed on the spring seat, spring seat contacts with the left end head that pretightening force is adjusted screw, pretightening force is adjusted screw and is installed in the right cover plate, and is fastened on the right cover plate by another nut, and right cover plate is installed on the housing by bolt; Preloading spring had a certain size pretightening force when centre of rotor overlapped with the center of stator; Top board by Bolt Connection on upper end cap, press table contacts with the stator external surface cooperation, roller is installed between top board and the press table, roller contacts with the lower surface of top board and the upper surface cooperation of press table, 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 left end cap and the right end cap by sliding bearing, and upper end cap, right end cap, left end cap are by being bolted on the housing.

The bivariate single-acting blade-type 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 the low-pressure hydraulic system, promptly in the hydraulic system below the 7Mpa, 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, easy maintenance, and reliable performance, dynamic response is fast.

(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. left end cap, 3. running shaft, 4,10,12,18. thrust plates, 5,17. rotors, 6,16. stators, 7,13. press tables, 8,14. rollers, 9,15. top boards, 11. upper end caps, 19. right end caps, 20,31. left covers, 21,40. pretightening forces are adjusted screw, 22,28,33,39. nuts, 23,38. spring seats, 24,37. preloading springs, 25,36. slides, 26,35. blades, 27,34. variable pistons, 29,32. eccentric screw, 30, the 41. right cover plates adjusted

(5) embodiment

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

As Fig. 1,2, shown in 3, the bivariate single-acting blade-type hydraulic transformer of manual control of the present invention is mainly by housing 1, left end cap 2, running shaft 3, thrust plate 4,10,12,18 and rotor 5,17 with stator 6,16 and upper end cap 11, press table 7,13 and roller 8,14 with top board 9,15 and right end cap 19, left cover 20,31 adjust screw 21 with pretightening force, 40 and nut 22,28,33,39 and spring seat 23,38 and preloading spring 24,37 with slide 25,36 and variable piston 27,34 and blade 26,35 with the eccentric screw 29 of adjusting, 32 and right cover plate 30,41 compositions such as grade; The center of rotor 5 is fixed, the center of stator 6 can be moved to the left or to the right, the center of stator 6 can be in the left side or the right side at rotor 5 centers, the width of rotor 5 is slightly littler than the width of stator 6, rotor 5 is installed in the stator 6, one end of blade 26 is put into the blade groove of rotor 5, the other end contacts with the internal surface of stator 6, blade 26 is radially settled (being that laying angle is zero) along rotor 5, rotor 5 cooperates connection with the left half axle of running shaft 3 by flat key, under the effect of constant pressure network system mesohigh oil, but 3 rotations of rotor 5 driven rotary axles; The left end of variable piston 27 contacts with the right surface of stator 6, the right-hand member of variable piston 27 contacts with the eccentric left end head of adjusting screw 29, variable piston 27 is installed in the housing 1, the eccentric screw 29 of adjusting is installed in the right cover plate 30, and be fastened on the right cover plate 30 by nut 28, right cover plate 30 is installed on the housing 1 by bolt, adjust screw 29 by rotating eccentricity and can drive variable piston 27 move left and right, the right-hand member of slide 25 contacts with the left surface of stator 6, slide 25 is installed in the housing 1, one end of preloading spring 24 is put into slide 25, the other end of preloading spring 24 is placed on the spring seat 23, spring seat 23 contacts with the right-hand member head that pretightening force is adjusted screw 21, pretightening force is adjusted screw 21 and is installed in the left cover 20, and be fastened on the left cover 20 by nut 22, left cover 20 is installed on the housing 1 by bolt, adjust the pretightening force that screw 21 can be adjusted preloading spring 24 by the rotation pretightening force, when not working, the center of rotor 5 overlaps (this position is called initial position) with the center of stator 6, this moment, preloading spring 24 had a certain size pretightening force, during work, clockwise or be rotated counterclockwise the eccentric screw 29 of adjusting and drive variable piston 27 and move to the left or to the right, move to the left or to the right thereby drive stator 6, change rotor 5 and realize variable with the size and Orientation of stator 6 throw of eccentric; Top board 9 by Bolt Connection on upper end cap 11, press table 7 contacts with the outer surface cooperation of stator 6, roller 8 is installed between top board 9 and the press table 7, roller 8 contacts with the lower surface of top board 9 and the upper surface cooperation of press table 7, press table 7 can be with stator 6 move left and right, thrust plate 4,10 is installed on the running shaft 3, and be pressed on stator 6 about on two sides; The center of rotor 17 is also fixed, the center of stator 16 can be moved to the left or to the right, the center of stator 16 can be in the left side or the right side at rotor 17 centers, the width of rotor 17 is slightly littler than the width of stator 16, rotor 17 is installed in the stator 16, one end of blade 35 is put into the blade groove of rotor 17, the other end contacts with the internal surface of stator 16, blade 35 is radially settled along rotor 17, rotor 17 cooperates connection with the left half axle of running shaft 3 by flat key, drive rotor 17 rotations, pressure oil output by running shaft 3; The right-hand member of variable piston 34 contacts with the left surface of stator 16, the left end of variable piston 34 contacts with the eccentric right-hand member head of adjusting screw 32, variable piston 34 is installed in the housing 1, the eccentric screw 32 of adjusting is installed in the left cover 31, and be fastened on the left cover 31 by nut 33, left cover 31 is installed on the housing 1 by bolt, adjust screw 32 by rotating eccentricity and can drive variable piston 34 move left and right, the left end of slide 36 contacts with the right surface of stator 16, slide 36 is installed in the housing 1, one end of preloading spring 37 is put into slide 36, the other end of preloading spring 37 is placed on the spring seat 38, spring seat 38 contacts with the left end head that pretightening force is adjusted screw 40, pretightening force is adjusted screw 40 and is installed in the right cover plate 41, and be fastened on the right cover plate 41 by nut 39, right cover plate 41 is installed on the housing 1 by bolt, adjust the pretightening force that screw 40 can be adjusted preloading spring 37 by the rotation pretightening force, when not working, the center of rotor 17 overlaps (this position is called initial position) with the center of stator 16, this moment, preloading spring 37 had a certain size pretightening force, during work, clockwise or be rotated counterclockwise the eccentric screw 32 of adjusting and drive variable piston 34 and move to the left or to the right, move to the left or to the right thereby drive stator 16, change rotor 17 and realize variable with the size and Orientation of stator 16 throw of eccentric; Top board 15 by Bolt Connection on upper end cap 11, press table 13 contacts with the outer surface cooperation of stator 16, roller 14 is installed between top board 15 and the press table 13, roller 14 contacts with the lower surface of top board 15 and the upper surface cooperation of press table 13, press table 13 can be with stator 16 move left and right, thrust plate 12,18 is installed on the running shaft 3, and be pressed on stator 16 about on two sides; The left and right two ends of running shaft 3 are installed on left end cap 2 and the right end cap 19 by sliding bearing, and upper end cap 11, right end cap 19, left end cap 2 are by being bolted on the housing 1.

By running shaft 3, rotor 5, stator 6, blade 26, rotor 5, stator 6, upper end cap 11, press table 7, roller 8, top board 9, left cover 20, pretightening force is adjusted screw 21, thrust plate 4,10 and nut 22,28 and spring seat 23, preloading spring 24, slide 25, variable piston 27, the eccentric screw 29 of adjusting, right cover plate 30 parts such as composition variable such as grade 42 are by running shaft 3, rotor 17, stator 16, upper end cap 11, press table 13, roller 14, top board 15, left cover 31, pretightening force is adjusted screw 40, thrust plate 12,18 and nut 33,39 and spring seat 38, preloading spring 37, slide 36, variable piston 34, blade 35, the eccentric screw 32 of adjusting, right cover plate 41 parts such as composition variable such as grade 43; As shown in Figure 4, structure, the functional similarity of the variable parts 42 of the bivariate single-acting blade-type hydraulic transformer of described manual control and variable parts 43 and single-acting blade-type secondary component, variable parts 42 and variable parts 43 can be seen a single-acting blade-type secondary component as; So, the bivariate single-acting blade-type hydraulic transformer of described manual control can be regarded as and formed by two secondary component coaxial rigid connection, the upper left hydraulic fluid port of variable parts 42 is the filler opening M of the bivariate single-acting blade-type hydraulic transformer of manual control, filler opening M is connected with the high voltage terminal of constant pressure network system, the upper right hydraulic fluid port of variable parts 43 is the oil outlet N of the bivariate single-acting blade-type 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 42 and the following hydraulic fluid port of variable parts 43 link together, become hydraulic fluid port O of bivariate single-acting blade-type 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 42 produce is:

${\mathrm{<figure-callout\; id="1"\; label="T"\; filenames="H2009100184184E00011.png,H2009100184184E00031.png"\; state="\{\{state\}\}">T</figure-callout>}}_1=\frac{{\mathrm{<figure-callout\; id="1"\; label="V"\; filenames="H2009100184184E00011.png,H2009100184184E00031.png"\; state="\{\{state\}\}">V</figure-callout>}}_1}{2\mathrm{\&pi;}}(p_1-p_0)$

The drag torque that variable parts 43 produce is:

$T_2=-\frac{V_2}{2\mathrm{\&pi;}}(p_2-p_0)$

In the formula: V ₁, V ₂Be the discharge capacity of variable parts 42, variable parts 43, 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 42 and the variable parts 43, 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:

$\mathrm{\&lambda;}=\frac{p_2}{{\mathrm{<figure-callout\; id="1"\; label="p"\; filenames="H2009100184184E00011.png,H2009100184184E00031.png"\; state="\{\{state\}\}">p</figure-callout>}}_1}=\frac{V_1}{V_2}---\left(1\right)$

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 bivariate single-acting blade-type hydraulic transformer of described manual control comes down to regulate discharge capacity V ₁/ V ₂Value, so can distinguish in the work or the discharge capacity V of Moderator Variable parts 42 simultaneously ₁Or the discharge capacity V of variable parts 43 ₂Satisfy the needs of load variations.

When the bivariate single-acting blade-type hydraulic transformer of described manual control is not worked, the equal transfixion of rotor of variable parts 42 and variable parts 43, the stator 6 of variable parts 42 is in initial rotational position, the discharge capacity V of these variations per hour parts 42 ₁Be zero, the stator 16 of variable parts 43 can be in the arbitrary position except that zero point, the discharge capacity V of variable parts 43 ₂Non-vanishing, by formula (1) as can be known, transformation ratio λ equals zero.

When the bivariate single-acting blade-type hydraulic transformer of described manual control is worked, for adapting to the variation of load, rotating eccentricity is adjusted screw 29 and the eccentric screw 32 of adjusting, variable parts 42 can move with stator 16 to the left or to the right with the stator 6 of variable parts 43, rotor 5 just constantly changes with the size and Orientation of the throw of eccentric of stator 16 with stator 6, rotor 17, along with the size and Orientation of throw of eccentric constantly changes the discharge capacity V of variable parts 42 ₁, variable parts 43 discharge capacity V ₂Also constantly change, by formula (1) as can be known, transformation ratio λ just changes thereupon, realizes transformation, satisfies the needs of load variations.

The rotor 5 of the variable parts 42 of the bivariate single-acting blade-type hydraulic transformer of described manual control and the displacement decision by variable piston 27 when working of the size and Orientation of the throw of eccentric of stator 6, the rotor 17 of variable parts 43 and the displacement decision by variable piston 34 when working of the size and Orientation of the throw of eccentric of stator 16, variable piston 27, the displacement of variable piston 34 is adjusted screw 29 by off-centre, the eccentric screw 32 of adjusting is controlled, adjust screw 29 by rotating eccentricity, eccentric screw 32, the adjustable variables plunger 27 adjusted, the displacement of variable piston 34 (size and Orientation).

Claims (3)

1. a bivariate single-acting blade-type hydraulic transformer of manually controlling comprises housing (1), left end cap (2), running shaft (3), first thrust plate (4), the first rotor (5), first stator (6), first press table (7), first roller (8), first top board (9), second thrust plate (10), upper end cap (11), the 3rd thrust plate (12), second press table (13), second roller (14), second top board (15), second stator (16), second rotor (17), the 4th thrust plate (18), right end cap (19), first left cover (20), first pretightening force is adjusted screw (21), first nut (22), first spring seat (23), first preloading spring (24), first slide (25), first group of blade (26), first variable piston (27), second nut (28), the first eccentric screw (29) of adjusting, the first right cover plate (30), second left cover (31), the second eccentric screw (32) of adjusting, the 3rd nut (33), second variable piston (34), second group of blade (35), second slide (36), second preloading spring (37), second spring seat (38), the 4th nut (39), second pretightening force is adjusted screw (40), the second right cover plate (41); It is characterized in that, the center of the first rotor (5) is fixed, the center of first stator (6) can be in the left side or the right side at the first rotor (5) center, the width of the first rotor (5) is slightly littler than the width of first stator (6), the first rotor (5) is installed in first stator (6), one end of first group of blade (26) is put into the blade groove of the first rotor (5), the other end of first group of blade (26) contacts with the internal surface of first stator (6), first group of blade (26) radially settled along the first rotor (5), the first rotor (5) cooperates connection with the left half axle of running shaft (3) by flat key, the left end of first variable piston (27) contacts with the right surface of first stator (6), the right-hand member of first variable piston (27) contacts with the first eccentric left end head of adjusting screw (29), first variable piston (27) is installed in the housing (1), the first eccentric screw (29) of adjusting is installed in the first right cover plate (30), and be fastened on the first right cover plate (30) by second nut (28), the first right cover plate (30) is installed on the housing (1) by bolt, the right-hand member of first slide (25) contacts with the left surface of first stator (6), first slide (25) is installed in the housing (1), one end of first preloading spring (24) is put into first slide (25), the other end of first preloading spring (24) is placed on first spring seat (23), first spring seat (23) contacts with the right-hand member head that first pretightening force is adjusted screw (21), first pretightening force is adjusted screw (21) and is installed in first left cover (20), and be fastened on first left cover (20) by first nut (22), first left cover (20) is installed on the housing (1) by bolt, first top board (9) by Bolt Connection on upper end cap (11), first press table (7) contacts with the outer surface cooperation of first stator (6), first roller (8) is installed between first top board (9) and first press table (7), first roller (8) contacts with the lower surface of first top board (9) and the upper surface cooperation of first press table (7), first thrust plate (4), second thrust plate (10) is installed on the running shaft (3), and be pressed on first stator (6) about on two sides; The center of second rotor (17) is fixed, the center of second stator (16) can be in the left side or the right side at second rotor (17) center, the width of second rotor (17) is slightly littler than the width of second stator (16), second rotor (17) is installed in second stator (16), one end of second group of blade (35) is put into the blade groove of second rotor (17), the other end of second group of blade (35) contacts with the internal surface of second stator (16), second group of blade (35) radially settled along second rotor (17), second rotor (17) cooperates connection with the right axle shaft of running shaft (3) by flat key, the right-hand member of second variable piston (34) contacts with the left surface of second stator (16), the left end of second variable piston (34) contacts with the second eccentric right-hand member head of adjusting screw (32), second variable piston (34) is installed in the housing (1), the second eccentric screw (32) of adjusting is installed in second left cover (31), and be fastened on second left cover (31) by the 3rd nut (33), second left cover (31) is installed on the housing (1) by bolt, the left end of second slide (36) contacts with the right surface of second stator (16), second slide (36) is installed in the housing (1), one end of second preloading spring (37) is put into second slide (36), the other end of second preloading spring (37) is placed on second spring seat (38), second spring seat (38) contacts with the left end head that second pretightening force is adjusted screw (40), second pretightening force is adjusted screw (40) and is installed in the second right cover plate (41), and be fastened on the second right cover plate (41) by the 4th nut (39), the second right cover plate (41) is installed on the housing (1) by bolt, second top board (15) by Bolt Connection on upper end cap (11), second press table (13) contacts with the outer surface cooperation of second stator (16), second roller (14) is installed between second top board (15) and second press table (13), second roller (14) contacts with the lower surface of second top board (15) and the upper surface cooperation of second press table (13), the 3rd thrust plate (12), the 4th thrust plate (18) is installed on the running shaft (3), and be pressed on second stator (16) about on two sides; The left and right two ends of running shaft (3) are installed on left end cap (2) and the right end cap (19) by sliding bearing, and upper end cap (11), right end cap (19), left end cap (2) are by being bolted on the housing (1).

2. the bivariate single-acting blade-type hydraulic transformer of manual control according to claim 1 is characterized in that, when the center of the first rotor (5) overlapped with the center of first stator (6), first preloading spring (24) had a certain size pretightening force.

3. the bivariate single-acting blade-type hydraulic transformer of manual control according to claim 1 is characterized in that, when the center of second rotor (17) overlapped with the center of second stator (16), second preloading spring (37) had a certain size pretightening force.

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