CN201526517U - Single-action leaf hydraulic transformer controlled by hydraulic cylinder - Google Patents

Abstract

The utility model provides a single-action leaf hydraulic transformer controlled by a hydraulic cylinder. The single-action leaf hydraulic transformer comprises two single-action variable components, a housing, a right end cover, a rotating shaft, a left end cover, an upper end cover and the like, and is characterized in that the two single-action variable components shares the same rotating shaft; the left and the right ends of the rotating shaft are mounted on the left and the right end covers through slide bearings; the rotor of one single-action variable component is in matched connection with the left half shaft of the rotating shaft through a flat key, and the rotor of the other component is in matched connection with the right half shaft of the rotating shaft through a flat key; the single-action variable components are arranged in the same housing; and the right end cover, the left end cover and the upper end cover are fixed on the housing through bolts. The utility model has the benefits that the pressure of a constant-pressure network system can be adjusted to a value in a load pressure variation range in a non-throttling loss manner; the hydraulic transformer can be applied in a low-pressure hydraulic system so as to enlarge the application rang of the hydraulic transformer, and enrich the variety of hydraulic transformers; the rotational inertia is small; the dynamic response is fast; and the control performance is good.

Description

The single-acting blade-type 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 single-acting blade-type 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 single-acting blade-type hydraulic transformer of the oil hydraulic cylinder control of low-pressure 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 single-acting blade-type hydraulic transformer of oil hydraulic cylinder control comprises two single action variable parts, housing, right end cap, running shaft, left end cap, upper end cap etc.; Two shared same running shafts of single action variable parts, two ends, the running shaft left and right sides are installed on the left and right end cap by sliding bearing, the rotor of single action variable parts cooperates connection with the left half axle of running shaft by flat key, the rotor of another single action variable parts cooperates connection with the right axle shaft of running shaft by flat key, two single action variable parts are installed in the same housing, and right end cap, left end cap, upper end cap are by being bolted on the housing.

The single-acting blade-type hydraulic transformer of described oil hydraulic cylinder control, single action variable parts comprise rotor, stator, blade, running shaft, variable piston, variable cylinder cover, top board, press table, roller and thrust plate etc.; Centre of rotor is fixed, but the center move left and right of stator; The width of rotor is slightly littler than the width of stator, and rotor is installed in the stator, and an end of blade is put into the blade groove of rotor, and the other end contacts with inner surface of stator, and blade is settled along rotor radial; The piston rod right-hand member head and the stator external surface of variable piston are fixed together, the housing of variable piston is to be processed on the housing of hydraulic transformer, variable piston, variable cylinder cover and housing constitute the variable oil cylinder, and the variable cylinder cover is by being bolted on the housing; On upper end cap, press table contacts with the stator external surface cooperation top board by Bolt Connection, and roller is installed between top board and the press table, and roller contacts with the lower surface of top board and the upper surface cooperation of press table; Left and right thrust plate is installed on the running shaft, and is pressed on two sides of stator.

The single-acting blade-type hydraulic transformer of described oil hydraulic cylinder control, another single action variable parts comprise rotor, stator, blade, running shaft, variable piston, variable cylinder cover, top board, press table, roller and thrust plate etc.; Centre of rotor is fixed, but the center move left and right of stator; The width of rotor is slightly littler than the width of stator, and rotor is installed in the stator, and an end of blade is put into the blade groove of rotor, and the other end contacts with inner surface of stator, and blade is settled along rotor radial; The piston rod right-hand member head and the stator external surface of variable piston are fixed together, the housing of variable piston is to be processed on the housing of hydraulic transformer, variable piston, variable cylinder cover and housing constitute the variable oil cylinder, and the variable cylinder cover is by being bolted on the housing; On upper end cap, press table contacts with the stator external surface cooperation top board by Bolt Connection, and roller is installed between top board and the press table, and roller contacts with the lower surface of top board and the upper surface cooperation of press table; Left and right thrust plate is installed on the running shaft, and is pressed on two sides of stator.

The single-acting blade-type hydraulic transformer of described oil hydraulic cylinder control, the last hydraulic fluid port of single action variable parts is the filler opening of the single-acting blade-type hydraulic transformer of oil hydraulic cylinder control, filler opening is connected with the high-pressure oil passage of constant pressure network system, the last hydraulic fluid port of another single action variable parts is the oil outlet of the single-acting blade-type hydraulic transformer of oil hydraulic cylinder control, oil outlet is connected with load end, filler opening is identical with the oil outlet size, the following hydraulic fluid port of single action variable parts and the following hydraulic fluid port of another single action variable parts link together, become hydraulic fluid port of single-acting blade-type hydraulic transformer of oil hydraulic cylinder control, this hydraulic fluid port is connected with fuel tank, and this hydraulic fluid port is greater than filler opening and oil outlet.

The single-acting blade-type 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 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) the utility model volume is little, in light weight, rotary inertia is little, and dynamic response is fast, and control performance is good.

(4) the utility model can be exported energy to load, also can be from load to the accumulator recovered energy.

(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. the first single action variable parts, 2. second single action variable parts, the 3. housing, 4. right end cap, 5. running shaft, 6. left end cap, 7. upper end cap, 8,18. variable pistons, 9,19. variable cylinder covers, 10,20. stators, 11,21. rotors, 12,22. blades, 13,23. top boards, 14,24. rollers, 15,25. press tables, 16,17,26,27. thrust plates

(5) embodiment

Explain below below in conjunction with drawings and Examples the utility model being done.

As shown in Figure 1, 2, 3, the single-acting blade-type hydraulic transformer of oil hydraulic cylinder control described in the utility model mainly is made up of the first single action variable parts 1, the second single action variable parts 2, housing 3, right end cap 4, running shaft 5, left end cap 6, upper end cap 7 etc.; The first single action variable parts 1 and the second single action variable parts, 2 shared same running shafts 5, two ends, running shaft 5 left and right sides are installed on left end cap 6, the right end cap 4 by sliding bearing, the rotor 11 of the first single action variable parts 1 cooperates connection with the left half axle of running shaft 5 by flat key, the rotor 21 of the second single action variable parts 2 cooperates connection with the right axle shaft of running shaft 5 by flat key, the first single action variable parts 1 and the second single action variable parts 2 are installed in the same housing 3, and right end cap 4, left end cap 6, upper end cap 7 are by being bolted on the housing 3.

The first single action variable parts 1 mainly are made up of running shaft 5, rotor 11, stator 10, blade 12, variable piston 8, variable cylinder cover 9, top board 13, press table 15, roller 14 and thrust plate 16,17 etc., the center of rotor 11 is fixed, but the center move left and right of stator 10; The width of rotor 11 is slightly littler than the width of stator 10, rotor 11 is installed in the stator 10, one end of blade 12 is put into the blade groove of rotor 11, the other end contacts with the internal surface of stator 10, blade 12 is radially settled (being that laying angle is zero) along rotor 11, under the effect of constant pressure network system mesohigh oil, but 5 rotations of rotor 11 driven rotary axles; The piston rod right-hand member head of variable piston 8 and the outer surface of stator 10 are fixed together, the housing of variable piston 8 is processed on housing 3, variable piston 8, variable cylinder cover 9 and housing 3 constitute the variable oil cylinder, the piston rod of variable piston 8 can promote stator 10 move left and right, change the size and Orientation of the throw of eccentric of rotor 11 and stator 10, thereby make the first single action variable parts 1 realize variable; Top board 13 by Bolt Connection on upper end cap 7, press table 15 contacts with the outer surface cooperation of stator 10, roller 14 is installed between top board 13 and the press table 15, and roller 14 contacts with the lower surface of top board 13 and the upper surface cooperation of press table 15, and press table 15 can be with stator 10 move left and right; Thrust plate 16,17 is installed on the running shaft 5, and be pressed on stator 10 about on two sides.

The second single action variable parts 2 mainly are made up of running shaft 5, rotor 21, stator 20, blade 22, variable piston 18, variable cylinder cover 19, upper end cap 7, top board 23, press table 25, roller 24 and thrust plate 26,27 etc., the center of rotor 21 is fixed, but the center move left and right of stator 20; The width of rotor 21 is slightly littler than the width of stator 20, and rotor 21 is installed in the stator 20, and an end of blade 22 is put into the blade groove of rotor 21, and the other end contacts with the internal surface of stator 20, and blade 22 is radially settled along rotor 21; The piston rod right-hand member head of variable piston 18 and the outer surface of stator 20 are fixed together, the housing of variable piston 18 is processed on housing 3, variable piston 18, variable cylinder cover 19 and housing 3 constitute the variable oil cylinder, the piston rod of variable piston 18 can promote stator 20 move left and right, change the size and Orientation of the throw of eccentric of rotor 21 and stator 20, thereby make the second single action variable parts 2 realize variablees; Top board 23 by Bolt Connection on upper end cap 7, press table 25 contacts with the outer surface cooperation of stator 20, roller 24 is installed between top board 23 and the press table 25, and roller 24 contacts with the lower surface of top board 23 and the upper surface cooperation of press table 25, and press table 25 can be with stator 20 move left and right; Thrust plate 26,27 is installed on the running shaft 5, and be pressed on stator 20 about on two sides; Drive rotor 21 rotations, pressure oil output by running shaft 5.

As shown in Figure 4, structure, the functional similarity of the first single action variable parts 1, the second single action variable parts 2 and the single-acting blade-type secondary component of the single-acting blade-type hydraulic transformer of described oil hydraulic cylinder control, the first single action variable parts 1, the second single action variable parts 2 can be seen two single-acting blade-type secondary components as; So, the single-acting blade-type hydraulic transformer of described oil hydraulic cylinder control can be regarded as and formed by two secondary component coaxial rigid connection, the last hydraulic fluid port of the first single action variable parts 1 is the filler opening M of the single-acting blade-type hydraulic transformer of oil hydraulic cylinder control, filler opening M is connected with the high-pressure oil passage of constant pressure network system, the last hydraulic fluid port of the second single action variable parts 2 is the oil outlet N of the single-acting blade-type 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 the following hydraulic fluid port of the first single action variable parts 1 and the second single action variable parts 2 links together, become hydraulic fluid port O of single-acting blade-type hydraulic transformer 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 the first single action variable parts 1 produce is:

${\mathrm{<figure-callout\; id="1"\; label="T"\; filenames="H2009200282784E00011.png,H2009200282784E00041.png"\; state="\{\{state\}\}">T</figure-callout>}}_1=\frac{{\mathrm{<figure-callout\; id="1"\; label="V"\; filenames="H2009200282784E00011.png,H2009200282784E00041.png"\; state="\{\{state\}\}">V</figure-callout>}}_1}{2\mathrm{\&pi;}}(p_1-p_0)$

The drag torque that the second single action variable parts 2 produce is:

${\mathrm{<figure-callout\; id="2"\; label="T"\; filenames="H2009200282784E00011.png,H2009200282784E00041.png"\; state="\{\{state\}\}">T</figure-callout>}}_2=-\frac{{\mathrm{<figure-callout\; id="2"\; label="V"\; filenames="H2009200282784E00011.png,H2009200282784E00041.png"\; state="\{\{state\}\}">V</figure-callout>}}_2}{2\mathrm{\&pi;}}(p_2-p_0)$

In the formula: V ₁, V ₂Be the discharge capacity of the first single action variable parts 1, the second single action variable parts 2, 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 the first single action variable parts 1 and the second single action variable parts 2, 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:

$\mathrm{\&lambda;}=\frac{p_2}{{\mathrm{<figure-callout\; id="1"\; label="p"\; filenames="H2009200282784E00011.png,H2009200282784E00041.png"\; state="\{\{state\}\}">p</figure-callout>}}_1}=\frac{V_1}{V_2}---\left(1\right)$

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 the transformation of the single-acting blade-type hydraulic transformer of therefore described oil hydraulic cylinder control comes down to regulate discharge capacity V ₁/ V ₂Value, can distinguish or regulate simultaneously the discharge capacity V of the first single action variable parts 1 in the work ₁Or the discharge capacity V of the second single action variable parts 2 ₂Satisfy the needs of load variations.

When the single-acting blade-type hydraulic transformer of described oil hydraulic cylinder control is not worked, the equal transfixion of rotor of the first single action variable parts 1 and the second single action variable parts 2, the stator 10 of the first single action variable parts 1 is in initial position (zero point), at this moment, the center of rotor 11 overlaps with the center of stator 10, throw of eccentric is zero, and the stator 20 of the second single action variable parts 2 can be in the arbitrary position except that zero point, at this moment the discharge capacity V of the first single action variable parts 1 ₁Be zero, the discharge capacity V of the second single action variable parts 2 ₂Non-vanishing, by formula (1) as can be known, transformation ratio λ equals zero.

When the single-acting blade-type hydraulic transformer of described oil hydraulic cylinder control is worked, for adapting to the variation of load, under the effect of variable oil cylinder, the stator 10 of the first single action variable parts 1 or the stator of the second single action variable parts 2 20 move respectively or simultaneously to the left or to the right, rotor 11 constantly changes with the size and Orientation of the throw of eccentric of stator 10 or rotor 21 and stator 20, along with the size and Orientation of throw of eccentric constantly changes the discharge capacity V of the first single action variable parts 1 ₁Or the discharge capacity V of the second single action variable parts 2 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 rotor 21 of the rotor 11 of the first single action variable parts 1 of the single-acting blade-type hydraulic transformer of described oil hydraulic cylinder control and stator 10, the second single action variable parts 2 and the displacement decision of the size and Orientation of the throw of eccentric of stator 20 by variable piston 8,18, the displacement of variable piston can be by electro-hydraulic servo (ratio) valve and position transducer control.In the work, the displacement by position transducer detection variable piston feeds back to controller, sends instruction by controller and gives electro-hydraulic servo (ratio) valve, the displacement of Moderator Variable piston (size and Orientation).

Claims (3)

1. the single-acting blade-type hydraulic transformer of an oil hydraulic cylinder control comprises the first single action variable parts (1), the second single action variable parts (2), housing (3), right end cap (4), running shaft (5), left end cap (6), upper end cap (7); It is characterized in that, the first single action variable parts (1) and the second shared same running shafts of single action variable parts (2) (5), running shaft (5) two ends, the left and right sides are installed on left end cap (6) and the right end cap (4) by sliding bearing, the rotor (11) of the first single action variable parts (1) cooperates connection with the left half axle of running shaft (5) by flat key, the rotor (21) of the second single action variable parts (2) cooperates connection with the right axle shaft of running shaft (5) by flat key, the first single action variable parts (1) are installed in the same housing (3) right end cap (4) with the second single action variable parts (2), left end cap (6), upper end cap (7) is by being bolted on the housing (3); The last hydraulic fluid port of the first single action variable parts (1) is filler opening (M), filler opening (M) is connected with the high-pressure oil passage of constant pressure network system, the last hydraulic fluid port of the second single action variable parts (2) is oil outlet (N), oil outlet (N) is connected with load end, filler opening (M) is identical with oil outlet (N) size, the following hydraulic fluid port of the following hydraulic fluid port of the first single action variable parts (1) and the second single action variable parts (2) links together becomes a hydraulic fluid port (O), hydraulic fluid port (O) is connected with fuel tank, and hydraulic fluid port (O) is greater than filler opening (M) and oil outlet (N).

2. the single-acting blade-type hydraulic transformer of oil hydraulic cylinder control according to claim 1, it is characterized in that the first single action variable parts (1) comprise running shaft (5), rotor (11), stator (10), blade (12), variable piston (8), variable cylinder cover (9), top board (13), press table (15), roller (14) and thrust plate (16,17); The center of rotor (11) is fixed, stator (10) but the center move left and right, the width of rotor (11) is slightly littler than the width of stator (10), rotor (11) is installed in the stator (10), one end of blade (12) is put into the blade groove of rotor (11), the other end contacts with the internal surface of stator (10), blade (12) is radially settled along rotor (11), the outer surface of the piston rod right-hand member head of variable piston (8) and stator (10) is fixed together, the housing of variable piston (8) is processed on housing (3), top board (13) by Bolt Connection on upper end cap (7), press table (15) contacts with the outer surface cooperation of stator (10), roller (14) is installed between top board (13) and the press table (15), roller (14) contacts with the lower surface of top board (13) and the upper surface cooperation of press table (15), thrust plate (16,17) be installed on the running shaft (5), and be pressed on stator (10) about on two sides.

3. the single-acting blade-type hydraulic transformer of oil hydraulic cylinder control according to claim 1, it is characterized in that the second single action variable parts (2) comprise running shaft (5), rotor (21), stator (20), blade (22), variable piston (18), variable cylinder cover (19), top board (23), press table (25), roller (24) and thrust plate (26,27); The center of rotor (21) is fixed, stator (20) but the center move left and right; The width of rotor (21) is slightly littler than the width of stator (20), rotor (21) is installed in the stator (20), one end of blade (22) is put into the blade groove of rotor (21), the other end contacts with the internal surface of stator (20), blade (22) is radially settled along rotor (21), the outer surface of the piston rod right-hand member head of variable piston (18) and stator (20) is fixed together, the housing of variable piston (18) is processed on housing (3), top board (23) by Bolt Connection on upper end cap (7), press table (25) contacts with the outer surface cooperation of stator (20), roller (24) is installed between top board (23) and the press table (25), roller (24) contacts with the lower surface of top board (23) and the upper surface cooperation of press table (25), thrust plate (26,27) be installed on the running shaft (5), and be pressed on stator (20) about on two sides.

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