CN107420300A - A kind of low-loss leaf formula ladder hydraulic press - Google Patents

A kind of low-loss leaf formula ladder hydraulic press Download PDF

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Publication number
CN107420300A
CN107420300A CN201710654990.4A CN201710654990A CN107420300A CN 107420300 A CN107420300 A CN 107420300A CN 201710654990 A CN201710654990 A CN 201710654990A CN 107420300 A CN107420300 A CN 107420300A
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CN
China
Prior art keywords
blade
chamber
rotor
loss
low
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN201710654990.4A
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Chinese (zh)
Inventor
张志红
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Nantong Dali Forging Machine Co Ltd
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Nantong Dali Forging Machine Co Ltd
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Priority to CN201710654990.4A priority Critical patent/CN107420300A/en
Publication of CN107420300A publication Critical patent/CN107420300A/en
Withdrawn legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03CPOSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
    • F03C2/00Rotary-piston engines
    • F03C2/30Rotary-piston engines having the characteristics covered by two or more of groups F03C2/02, F03C2/08, F03C2/22, F03C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F03C2/304Rotary-piston engines having the characteristics covered by two or more of groups F03C2/02, F03C2/08, F03C2/22, F03C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having both the movements defined in sub-group F03C2/08 or F03C2/22 and relative reciprocation between members
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C14/00Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00Rotary-piston machines or pumps
    • F04C2/30Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C2/34Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
    • F04C2/344Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F04C2/3446Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along more than one line or surface

Abstract

The invention discloses a kind of low-loss leaf formula ladder hydraulic press, including axle, procapsid, back casing, the stator being arranged on inside procapsid and back casing, rotor, blade, oil-feed oil distribution casing and fuel-displaced oil distribution casing, multiple rotor slots are evenly equipped with described rotor, described blade is movably arranged in rotor slot, the thickness of root of blade is more than the thickness of vane tip, bottom chamber is formed between blade and the bottom of rotor slot, control chamber is formed between blade and the cell wall of rotor slot, on described oil-feed oil distribution casing and fuel-displaced oil distribution casing kidney slot is respectively arranged with corresponding to control chamber position.The step blade type hydraulic machinery, blade is balanced to the pressure of stator inner surface, stable working, and abrasion is small, and can realize idle running, avoids the reactive loss after off-load, and energy loss is few.

Description

A kind of low-loss leaf formula ladder hydraulic press
Technical field
The present invention relates to hydraulic machinery technical field, more particularly, to a kind of low-loss leaf formula ladder hydraulic press.
Background technology
Blade hydraulic pump or motor volume are small, and rotary inertia is small, are active in one's movements, and are applicable to the higher field of commutating frequency Close, but leakage rate is larger, unstable during tick-over.Therefore vane motor is generally used for that rotating speed is high, torque is small and dynamic It is required sensitive occasion.Traditional hydraulic pump or motor, in order to ensure vane motor can be just after pressure oil is passed through Often start, it is necessary to be in close contact vane tip and stator inner surface, to ensure good sealing, therefore all set in root of blade It is equipped with preloading spring, but this traditional hydraulic motor and pump, because root of blade is provided with preloading spring, vane tip begins The inner surface all with stator is in close contact eventually, so that the vane tip after off-load contacts all the time with the inner surface of stator Together, work(loss is added, adds energy loss.
Chinese patent literature (publication date:On July 8th, 1992, publication number:CN2109447A a kind of double acting) is disclosed to become Vane pump is measured, it is mainly characterized by stator and may move for breakaway-element, and stator is placed in rectangular pump case inner chamber, in the rotor of pump Upper several back blades of increase, play the high-low pressure chamber in isolation and sealed volume.Two bascules difference of stator It is placed in the outside of two stators.Hydraulic pump can be used as, is directly driven by diesel engine or gasoline engine;Also hydraulic motor can be used as, and The hydraulic motor of connection loop composition is attached separately in every wheel, directly plays driving and braking action.Stator in the technical scheme For breakaway-element removable frame, and several back blades are added on the rotor of pump, although with small volume, structure letter The features such as single, easy to manufacture, but the blade in the technical scheme still uses preloading spring structure, however it remains common double cropping With vane pump it is all the defects of, flow pulsation, pressure fluctuation, vibration and noise.
Chinese patent literature (publication date:On March 23rd, 2005, publication number:CN 1598288A) disclose a kind of double acting Vane secondary component, a kind of Double-action Vane Secondary Component, by rotor, stator, blade, variable oil cylinder, housing and flow Disk etc. is formed, it is characterised in that variable oil cylinder is made up of change gauge rod, variable piston, variable shell etc., and variable shell passes through bolt It is fixed on housing, the spherical head end for becoming gauge rod is connected with the groove of variable piston, and the other end for becoming gauge rod is fixed on stator length On the outer surface of radius arc centerline.Above-mentioned technical proposal is to make " the liquid of secondary component by the control to position of stator Pressure motor " operating mode is mutually changed with " hydraulic pump " operating mode, realizes the recycling and reuse of energy.
Chinese patent literature (publication date:On September 7th, 2011, publication number:CN102174901A a kind of rocking arm knot) is disclosed The vane motor of structure, include end cap, oil distribution casing, stator, rotor, rotating shaft, rotor is connected with rotating shaft with spline, rotor Uniform a plurality of blade groove is gone up, multiple rocking arm crossbeams are also equipped with the round recessed of two ends of rotor, there is hole at the center of rocking arm crossbeam, pin Axle is rotatablely connected rocking arm crossbeam and rotor through the hole, and there is cylindrical cavity at the both ends of blade groove, had under cylindrical cavity radially intersecting therewith Through hole, be sequentially arranged with push rod and spring in through hole, the bottom surface of push rod and the arm of rocking arm crossbeam are in contact, and blade groove is built with leaf Piece, the bottom of blade and spring contact, spring are located in cylindrical cavity, and oil circuit and cylindrical cavity are communicated, and blade tip is provided with groove, and blade head is inserted Enter in groove, and blade tight fit, and blade tip is higher by, and the inner curve face contact of stator.The blade of the hydraulic motor and Good airproof performance between stator, rub during rotation small, motor it is more efficient, the life-span is longer.
The vane motor of above-mentioned rocker structure, increase rocker structure cause the volume of vane motor to increase Greatly, rotating sensitivity can decline.
Chinese patent literature (publication date:On June 11st, 2008, publication number:CN 201071806Y) disclose a kind of hydraulic pressure The rotor of pump, belong to hydraulic pressure pump technical field.It solves existing cylinder block of hydraulic pumps because flow and pressure fluctuation make hydraulic pressure Pump produces the problem of noise.The rotor of this hydraulic pump, including columned rotor body and the blade of some flat, these leaves Piece is plugged on rotor body along the radially movable of rotor body, and described blade is divided on rotor body in a manner of non-decile Cloth.
Above-mentioned technical proposal uses is distributed in a manner of non-decile blade on rotor body, at the same the top of blade with It is that inertia when being rotated by rotor is in close contact together between the inner surface of stator, the structure, as long as rotor rotates, blade It there is and contact between top and stator inner surface, the reactive loss after off-load can not be realized, reduce energy loss.
Chinese patent literature (the day for announcing:On May 9th, 2001, notification number:CN2429671Y a kind of) super-low speed continuous rotary Hydraulic servo motor, it is the improvement to double-acting blade-type continuous rotary hydraulic motor.The hydraulic servo horse of this new structure Up to the pulsation that flow pulsation and driving moment are eliminated from principle, pass is provided for Ultra-Low Speed and high-precision driving and control Key technology.When carrying out closed loop servo drive control using electrohydraulic servo valve, it is even lower that minimum angular speed reaches 0.05 °/s, will It is between the root of blade oil pocket of working chamber and vane tip oil pocket and is interconnected, is in the root of blade oil pocket list of seal area Only cut-in pressure oil, vane tip top pressure is on stator Inner arc inner surface.
Above-mentioned technical proposal carries out closed loop servo drive control using electrohydraulic servo valve, and cost is high, is mainly used in aviation, boat My god, the military products field such as naval vessel, it is little in civilian goods occupation rate of market, be not suitable for popularity.
In summary, although blade hydraulic pump of the prior art and motor employ various technical schemes from difference Angle improves the performance of Vane-type hydraulic machine, but from the point of view of presently disclosed technical scheme, is required for carrying out energy biography Pass, especially still need power consumption when not needing work, be unfavorable for saving.
The content of the invention
The invention aims to solve Vane-type hydraulic machine of the prior art to still need energy in not working stage Amount is transmitted, it is impossible to avoid the reactive loss after off-load, the problem of reducing energy loss and provide a kind of blade to stator inner surface Pressure it is balanced, stable working, abrasion is small, and can realize idle running, avoids the reactive loss after off-load, reduction energy loss Step blade type hydraulic machinery.
Technical scheme is used by the present invention realizes its technical purpose:A kind of low-loss leaf formula ladder hydraulic press, including Axle, procapsid, back casing, the stator being arranged on inside procapsid and back casing, rotor, blade, oil-feed oil distribution casing and fuel-displaced match somebody with somebody Food tray, multiple rotor slots are evenly equipped with described rotor, described blade is movably arranged in rotor slot, blade and rotor slot Bottom chamber is formed between bottom, forms control chamber between blade and the cell wall of rotor slot, described oil-feed oil distribution casing and fuel-displaced is matched somebody with somebody On food tray kidney slot is respectively arranged with corresponding to control chamber position.The step blade type hydraulic machinery, to traditional vane type liquid Annexation between the blade and rotor slot of press mechanical pressing is improved, and sets up a control chamber, root of blade and rotor slot bottom A bottom chamber is formed between portion, and preloading spring is not set in bottom chamber, the bottom chamber can be introduced directly into external pressure liquid, The control to blade bottom pressure is realized, blade is outwards ejected and is contacted with stator inner surface.And in oil-feed oil distribution casing and fuel-displaced Higher-pressure region and low-pressure area are respectively arranged with corresponding kidney slot corresponding to control chamber position on oil distribution casing, and such structure can pass through High-pressure fluid or low-pressure fluid are passed through in control chamber, to realize to the bottom cavity pressure suffered by blade and vane tip chamber pressure The regulation and control of power, concrete operations are:The hydraulic machinery makees the motor used time, and motor inlet needs high pressure, then vane tip chamber It is inside high pressure, and now bottom chamber is passed through highly pressurised liquid and forms high pressure, because blade is acted on by stress surface product moment, and utilizes System back pressure sets the external pressure fluid of startup, and blade can reliably touch stator inner surface, motor is smoothly started, eliminate The spring structure of common blade motor, meanwhile, now the pressure fluid inside control chamber causes the two-way pressure difference of blade to keep Equilibrium, motor operations are steady.If the hydraulic machinery when that need not carry out energy transmission, that is, exists according to host work loop condition When certain phase does not need work, then make control chamber through each kidney slot on oil-feed oil distribution casing and fuel-displaced oil distribution casing with the external pressure of runner Power fluid, thus when the hydraulic machinery off-load, so blade controlled cavity pressure effect or simultaneously by vane tip cavity pressure Effect with control cavity pressure is retracted in rotor slot, so as to realize idle running, is eliminated the reactive loss after off-load, is reduced energy Amount loss.The hydraulic machinery, can also be by the position of kidney slot and setting for angle on oil-feed oil distribution casing and fuel-displaced oil distribution casing Meter, makes pressure balanced and reasonable of the blade in all-round scope to stator inner surface, it is ensured that stable working, reduces abrasion as far as possible.And And the step blade type hydraulic machinery good manufacturability, cost are relatively low.
Preferably, described blade includes root and top, the thickness of root of blade is more than the thickness of vane tip, leaf The cross section of piece is in hierarchic structure or T-shaped structure.Blade is thin using one end thickness one end, and leaf cross-section is in hierarchic structure or T Shape structure, such structure is the setting of control chamber for convenience, so as to ensure to realize the purpose of technical scheme, leaf End face at the top of piece is that cambered surface is to meet that the end face of vane tip improves abrasion state with stator inner surface and sets.
Preferably, the thickness of described vane tip is equal to the half of root of blade thickness, described blade is integrated Formula structure or split-type structural.The thickness at the thin end of blade is preferably equal to the half of thick end thickness, is easy to by control chamber realization pair The control of vane stress face difference, while facilitate the setting of blade, blade uses integral structure, makes precision height, and uses and divide Body formula structure is convenient to be made and installs.
Preferably, described rotor slot is equipped with blade, the cross section of rotor slot is in hierarchic structure or T-shaped knot Structure, the bottom of rotor slot is arc structure, and described rotor slot is structure as a whole or Split type structure.Rotor slot coordinates with blade Set, the cross section of rotor slot is also provided with being in hierarchic structure or T-shaped structure, coordinates between such rotor slot and blade and is easy to control The formation of chamber processed and bottom chamber so that whole mechanical inside cavity forms vane tip chamber, control chamber and bottom chamber, passes through blade Top chamber, control chamber and bottom chamber realize the control to blade pressure difference, so as to realize different functions.
Preferably, being provided with liner on cell wall during described rotor slot split settings, described liner is in rectangular configuration, The thickness of described liner is equal to the distance between vane tip and rotor cell wall, and connection is slidingly sealed between blade and liner, Liner is connected with rotor slot cell wall by pin or screw or welding or link stopper mode.The thickness of liner is equal to the relatively thin top of blade The distance between portion and rotor cell wall, such structure is the formation for control chamber, and split settings are easy to operate.
Preferably, blade is arranged in rotor slot along the radially movable of rotor, the interior table of the top of blade towards stator Face, the root of blade are enclosed towards the bottom of rotor slot, described bottom chamber by the root end face of blade and the bottom of rotor slot Form, described control chamber be made up of the side of blade and the cell wall of rotor slot or by blade side and rotor slot cell wall and Liner is formed.Said structure causes the blade of the Vane-type hydraulic machine inside cavity by vane tip chamber, control chamber and bottom The effect of portion's chamber different pressures so that the compression situation of blade can make different adjustment, the shape of control chamber according to working condition Energy transmission is stilled need in not working stage, it is impossible to avoid the idle damage after off-load into conventional leaf hydraulic machinery is changed Consumption, reduce energy loss the problem of.
Preferably, described kidney slot connects with control chamber, the bottom of described kidney slot is provided with to be connected with control chamber Logical control chamber runner, control valve is provided with described control chamber runner or is directly connected with fluid interface.Such structure Facilitate being passed through for signal oil or pressure fluid, the convenient control to control chamber fluid is necessary so as to realize the control to blade The idle running of Shi Shixian hydraulic pumps.Certainly bottom chamber runner directly can also be connected with fluid interface as needed.
Preferably, influent stream chamber, discharge chamber and right are also respectively provided with described fuel-displaced oil distribution casing and oil-feed oil distribution casing Should in the annular groove of bottom chamber, described influent stream chamber and discharge chamber respectively with by blade, the inner surface of stator, rotor outer surface and The multiple annular seal spaces formed between oil-feed oil distribution casing and fuel-displaced oil distribution casing communicate, and described annular groove bottom is provided with bottom chamber runner, Control valve is provided with described bottom chamber runner or is directly connected with fluid interface.It can so realize pressure fluid in machinery The flowing of intracavitary, so as to realize the purpose of the present invention, when influent stream chamber is passed through high pressure, high-pressure mouth is here formed as, now high-pressure mouth Control chamber corresponding to region is through flow passage low pressure port fluid, and control chamber is through flow passage high pressure corresponding to low pressure port region Mouthful, bottom chamber realizes the function of motor through flow passage high-pressure mouth, such structure, and when influent stream chamber is passed through low-pressure fluid, Low pressure port is here formed as, such structure realizes the function of pump.Because the high-pressure mouth and low pressure port of hydraulic pump and hydraulic motor are reciprocal, The import of hydraulic pump is low pressure, and outlet is high pressure, and the import of hydraulic motor is high pressure, and outlet is low pressure, so being both used as liquid Press pump is used as hydraulic motor again when, need to set control valve between bottom chamber and high-pressure mouth, low pressure port, to ensure bottom chamber as high-pressure spray Body.
Preferably, control chamber connection discharge chamber corresponding to the section of influent stream alveolus, discharges control chamber connection corresponding to the section of alveolus Influent stream chamber, bottom chamber connect pressure fluid interface through annular groove.Such structure be in order to realize vane tip chamber, control chamber and The respective function of bottom chamber and set.It can be realized using said structure:As vane pump in use, when blade is in discharge During section, vane tip is high pressure, and the control chamber of respective segments is low pressure, and bottom chamber is high pressure;When blade is in influent stream section When, vane tip is low pressure, and the control chamber of respective segments is high pressure, and bottom chamber is high pressure.Make sliding-vane motor in use, working as blade When being in discharge section, vane tip is low pressure, and the control chamber of respective segments is high pressure, and bottom chamber is high pressure;When blade is in During influent stream section, vane tip is high pressure, and the control chamber of respective segments is low pressure, and bottom chamber is high pressure;Make as sliding-vane motor Used time, bottom chamber can first lead to enabling signal oil;When system needs, in blade regracting rotor, the idle running of pump is realized.
Preferably, it is respectively arranged with flow inlet, outlet, fluid introduction port and stream on described back casing and procapsid Body outlet.Fluid is connected by flow inlet with influent stream chamber, and outlet is connected with discharge chamber, sets fluid introduction port and fluid to draw It is in order that external pressure fluid is by introduction into bottom chamber and control chamber, to blade bottom chamber to export and connect control Vavle switching Pressure and control cavity pressure switch over control.Higher-pressure region or low-pressure area are formed in influent stream chamber as needed, passes through bottom chamber stream The control to hydraulic pump and motor is realized in body switching;When motor starting works, bottom chamber can first be passed through outer signal oil, will Blade is released to stator inner surface direction;When system does not need work, system unloaded, the external pressure fluid of control chamber, blade In regracting rotor slot, idle running is realized, realizes system capacity low consumption.
The beneficial effects of the invention are as follows:1. the step blade type hydraulic machinery, by setting the thin blade in one end thickness one end, By the effect of vane stress difference in areas, and using system back pressure or startup is set reliably to be pasted with external pressure fluid, blade Firmly stator inner surface, motor is smoothly started, and eliminate the spring structure of common blade motor.
2. the step blade type hydraulic machinery, communicated by being set on oil-feed oil distribution casing and fuel-displaced oil distribution casing with control chamber Kidney slot, and appropriate design is made in the position and angle to kidney slot, ensure that the blade in all-round scope to table in stator The pressure balanced and reasonable in face, it is ensured that stable working, reduce abrasion as far as possible, Product Process is good, and cost is relatively low.
, can be according to host work loop condition, when being not required to carry out energy transmission, i.e., 3. the step blade type hydraulic machinery When certain phase does not need work, control chamber is set to pass through control through each kidney slot on oil-feed oil distribution casing and fuel-displaced oil distribution casing with runner The external pressure fluid of valve processed, thus when the hydraulic machinery off-load, so the controlled intracavitary of blade pressure effect be retracted in rotor In groove, so as to realize idle running, the reactive loss after off-load is eliminated, reduces energy loss.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the present invention.
Fig. 2 is Fig. 1 H-H sectional views.
Fig. 3 is a kind of structural representation of rotor of the present invention.
Fig. 4 is a kind of structural representation of blade of the present invention.
In figure:1st, axle, 2, procapsid, 3, back casing, 4, stator, 5, rotor, 6, blade, 7, oil-feed oil distribution casing, 8, fuel-displaced Oil distribution casing, 9, rotor slot, 10, liner, 11, bottom chamber, 12, control chamber, 13, kidney slot, 14, flow inlet, 15, fluid introduces Mouthful, 16, outlet, 18, influent stream chamber, 19, discharge chamber, 20, annular groove, 21, control chamber runner, 22, bottom chamber runner.
Embodiment
Technical scheme is described in further detail below by specific embodiment and with reference to accompanying drawing.
Embodiment 1:
In the embodiment shown in Fig. 1, Fig. 2, a kind of low-loss leaf formula ladder hydraulic press, including axle 1, procapsid 2, back casing 3, Stator 4, rotor 5, blade 6, oil-feed oil distribution casing 7 and the fuel-displaced oil distribution casing 8 being arranged on inside procapsid 2 and back casing 3, procapsid 2 with the cooperation of fuel-displaced oil distribution casing 8, back casing 3 with the cooperation of oil-feed oil distribution casing 8, and procapsid 2 and back casing 3 are matched somebody with somebody Sealing device is provided with conjunction, bearing and shaft sealer are provided between axle 1 and procapsid 2, axle 1 passes through key with rotor 5 Connection.In the present embodiment, ten rotor slots 9 (see Fig. 3) are evenly arranged with rotor 5, the number of rotor slot 9 also may be used as needed To be arranged to 12 or other numbers, rotor slot 9 is internally provided with blade 6, and the bottom land of rotor slot 9 is in arc structure, rotor The cross section of groove 9 is in hierarchic structure, naturally it is also possible to is arranged to T-shaped structure, in the embodiment, the cross section of rotor slot 9 is in rank Terraced structure, it is equipped with blade 6, rectangle liner 10 is provided with by pin on the cell wall of rotor slot 9, liner 10 can also be with Rotor is wholely set, and blade 6 includes root and top, and the cross section of blade 6 is in hierarchic structure split settings (see Fig. 4), certainly The blade can also be formed integrally formula, and the end face at the top of blade 6 is cambered surface, and the thickness of the root of blade 6 is more than vane tip Thickness, the thickness at the top of blade 6 is equal to the half of root thickness in the present embodiment.Thickness with the top of hing straps 6, liner 10 Thickness is equal to the side of blade 6 and is radially movably arranged in rotor slot 9 to the distance of the cell wall of rotor slot 9, blade 6, blade 6 Towards the inner surface of stator 4, the bottom surface of the root of blade 6 forms bottom towards the bottom of rotor slot 9 and with the bottom of rotor slot 9 on top Portion's chamber 11, the side of blade 6 collectively forms control chamber 12 with the side of rotor slot 9 and the three of liner 10, in the control control 12 Portion can select to be passed through high-pressure fluid or low-pressure fluid.It is respectively arranged with and corresponds on oil-feed oil distribution casing 7 and fuel-displaced oil distribution casing 8 Higher-pressure region or the corresponding kidney slot 13 of low-pressure area control chamber 12.Corresponding kidney slot 13 connects with corresponding control chamber 12, with control The bottom for the kidney slot 13 that chamber 12 connects be provided with corresponding to control chamber runner 21, kidney slot 13 through control chamber runner 21 connect into Chamber or discharge chamber are flowed, or sets corresponding runner to pass through the external pressure fluid switching control of control valve.
Flow inlet 14, outlet 16, fluid are respectively arranged with back casing 3 and procapsid 2 and introduces 15 mouthfuls and fluid extraction Mouthful.Influent stream chamber 18 and discharge chamber 19 and the annular groove 20 corresponding to bottom chamber 11, certain annular groove 20 are provided with oil-feed oil distribution casing 7 It can also be provided that semi-circular or kidney-shaped structure, the bottom of annular groove 20 is provided with bottom chamber runner 22, and annular groove 20 connects high-pressure spray Body connects high-pressure fluid or external pressure fluid through bottom chamber runner 22 by control valve.It is also equipped with fuel-displaced oil distribution casing 8 Influent stream chamber 18 and discharge chamber 19 and the annular groove 20 corresponding to bottom chamber, certain annular groove 20 is it can also be provided that semi-circular or waist Shape structure.Influent stream chamber 18 and discharge chamber 19 by blade 6, the inner surface of stator 4, the outer surface of rotor 5 and oil-feed respectively with matching somebody with somebody oil The multiple annular seal spaces formed between disk 7 and fuel-displaced oil distribution casing 8 communicate.
The step blade type hydraulic machinery, the connection of control chamber 12 discharge chamber 19, discharges chamber 19 corresponding to the section of influent stream chamber 18 Control chamber 12 corresponding to section connects influent stream chamber 18, and bottom chamber 11 connects annular groove 20.In order to realize control chamber 12 or bottom chamber 11 It can selectively switch on or disconnect external pressure fluid, the oil-feed oil distribution casing 7 that is connected with control chamber 12 or bottom chamber 11 and go out Kidney slot 13 or annular groove 20 or passage on oily oil distribution casing 8 pass through the external pressure fluid of control valve through runner.And control valve is single To valve either check valve or reversal valve.
Embodiment 2:
A kind of low-loss leaf formula ladder hydraulic press, its structure is substantially the same manner as Example 1, and difference is:In the embodiment The cross section of blade and rotor slot is arranged to T-shaped structure, and rotor slot is integral structure, and blade is also integrative-structure, procapsid 2nd, outside intake is also respectively provided with back casing 3, the liquid of outside is directly introduced from outside into mouth and guides to inside control chamber, Realize to the balance of pressure in vane tip chamber and bottom cavity, certainly now control chamber and vane tip flow inlet or outlet Cavity is not communicated with, and with bottom chamber and being not communicated with, the purpose for setting outside intake is in order that inside control chamber Chamber oil can be introduced directly into from outside, be connected on working host, and when not needing pump or motor operations, system unloaded, control Intracavitary portion processed messenger oil, or lead to pressure fluid to control chamber and influent stream chamber simultaneously, make in blades retracted rotor slot, realizing should The idle running of hydraulic machinery.
Step blade type hydraulic machinery shown in embodiment 1 and embodiment 2, it can use or make as hydraulic pump Use, no matter used as pump or motor for hydraulic motor, the oil-feed oil distribution casing of the step blade type hydraulic machinery and fuel-displaced Influent stream chamber and discharge chamber are provided with oil distribution casing, influent stream chamber can be that high pressure can also be low pressure, because pump inlet is low pressure, Outlet is high pressure, and motor inlet is high pressure, and outlet is low pressure, it is possible to is designed according to main frame specific works situation, high-pressure mouth Control chamber corresponding to region through flow passage low pressure port fluid, control chamber corresponding to low pressure port region through flow passage high-pressure mouth, Bottom chamber is through flow passage high-pressure mouth.High-pressure mouth region and low pressure port region have accordingly on oil-feed oil distribution casing and fuel-displaced oil distribution casing Kidney slot, control chamber can communicate with corresponding kidney slot, and kidney slot corresponding to high-pressure mouth region communicates with low pressure port, low pressure mouth region Kidney slot communicates with high-pressure mouth corresponding to domain, has what can be communicated therewith on oil-feed oil distribution casing corresponding to bottom chamber and fuel-displaced oil distribution casing Annular groove, the annular groove communicate with high-pressure mouth.
When the step blade type hydraulic machinery makees vane pump in use, when blade 6 is in influent stream section, the top of blade 6 It is low pressure, the control chamber 12 of respective segments is high pressure, and bottom chamber 11 is high pressure;When blade 6 is in discharge section, blade 6 pushes up Portion is high pressure, and the control chamber 12 of respective segments is low pressure, and bottom chamber 11 is high pressure.Blade 6 is stressed the effect top of Fluid pressure Portion's circular arc is held out against with the inner surface of stator 4, and the blade 6 of all-round scope is to the pressure balanced and reasonable of the inner surface of stator 4, blade pump work Steadily, abrasion is few.
When the step blade type hydraulic machinery makees sliding-vane motor in use, when blade 6 is in influent stream section, blade 6 Top is high pressure, and the inside of control chamber 12 of respective segments is low pressure, is high pressure inside bottom chamber 11;When blade 6 is in discharge area Duan Shi, the top of blade 6 are low pressure, and the inside of control chamber 12 of respective segments is high pressure, is high pressure inside bottom chamber 11;As blade Motor is in use, bottom chamber 11 can first lead to enabling signal oil.The step blade type hydraulic machinery makees the motor used time, due to blade 6 Stress surface product moment acts on, and using system back pressure or sets startup reliably to touch stator 4 with external pressure fluid, blade 6 Inner surface, motor is smoothly started, instead of the spring structure of common blade motor.
Because the high-pressure mouth of pump and motor is reciprocal with low pressure port, pump inlet is low pressure, and outlet is high pressure, and motor inlet is high Pressure, outlet is low pressure, therefore when making motor not only making pump, need to set control between control chamber 12, bottom chamber 11 and high-pressure mouth, low pressure port Vavle switching processed, to ensure that rational blade two-way pressure is poor.
The step blade type hydraulic machinery, system unloaded, messenger oil in pump chamber, in the compression and back rotor slot 9 of blade 6, pump Or motor does not work, system capacity consumption is low.Or the chamber oil inside control chamber 12 can be introduced from outside into, when not need should When hydraulic machinery works, system unloaded, the intercommunication oil of control chamber 12, in blades retracted rotor.
If the step blade type hydraulic machinery is not required to carry out energy transmission according to host work loop condition, i.e., in certain rank Duan Buxu work when, then make control chamber 12 through each kidney slot on oil-feed oil distribution casing and fuel-displaced oil distribution casing with runner by control valve outside Connect pressure fluid, thus when the hydraulic machinery off-load, so the controlled pressure of chamber 12 effect of blade 6 is retracted in rotor slot 9, from And idle running is realized, the reactive loss after off-load is eliminated, reduces energy loss.

Claims (10)

1. a kind of low-loss leaf formula ladder hydraulic press, including axle, procapsid, back casing, it is arranged on inside procapsid and back casing Stator, rotor, blade, oil-feed oil distribution casing and fuel-displaced oil distribution casing, it is characterised in that:Multiple rotors are evenly equipped with described rotor Groove, described blade are movably arranged in rotor slot, and bottom chamber, blade and rotor slot are formed between blade and the bottom of rotor slot Cell wall between form control chamber, be respectively arranged with described oil-feed oil distribution casing and fuel-displaced oil distribution casing corresponding to control chamber position Kidney slot.
A kind of 2. low-loss leaf formula ladder hydraulic press according to claim 1, it is characterised in that:Described blade includes root Portion and top, the thickness of root of blade are more than the thickness of vane tip, and the cross section of blade is in hierarchic structure or T-shaped structure.
A kind of 3. low-loss leaf formula ladder hydraulic press according to claim 2, it is characterised in that:Described vane tip Thickness is equal to the half of root of blade thickness, and described blade is integral type structure or split-type structural.
A kind of 4. low-loss leaf formula ladder hydraulic press according to claim 1, it is characterised in that:Described rotor slot and leaf Piece is equipped with, and the cross section of rotor slot is in hierarchic structure or T-shaped structure, and the bottom of rotor slot is arc structure, described Rotor slot is structure as a whole or Split type structure.
A kind of 5. low-loss leaf formula ladder hydraulic press according to claim 4, it is characterised in that:Described rotor slot split Liner is provided with during setting on cell wall, described liner is in rectangular configuration, and the thickness of described liner is equal to vane tip with turning The distance between pilot trench wall, is slidingly sealed connection between blade and liner, liner and rotor slot cell wall by pin or screw or Welding or link stopper mode connect.
A kind of 6. low-loss leaf formula ladder hydraulic press according to claim 1 or 2 or 3 or 4 or 5, it is characterised in that:Blade Radially movable along rotor is arranged in rotor slot, and the top of blade is towards the inner surface of stator, and the root of blade is towards rotor The bottom of groove, described bottom chamber are enclosed and formed by the root end face of blade and the bottom of rotor slot, and described control chamber is by leaf The side of piece and the cell wall of rotor slot are formed or are made up of the side of blade with rotor slot cell wall and liner.
A kind of 7. low-loss leaf formula ladder hydraulic press according to claim 1, it is characterised in that:Described kidney slot and control Chamber processed connection, the bottom of described kidney slot are provided with the control chamber runner connected with control chamber, on described control chamber runner It is provided with control valve or is directly connected with fluid interface.
A kind of 8. low-loss leaf formula ladder hydraulic press according to claim 1, it is characterised in that:Described fuel-displaced oil distribution casing With influent stream chamber, the discharge chamber and annular groove corresponding to bottom chamber, described influent stream chamber and row are also respectively provided with oil-feed oil distribution casing Go out chamber respectively with it is more by being formed between blade, the inner surface of stator, the outer surface of rotor and oil-feed oil distribution casing and fuel-displaced oil distribution casing Individual annular seal space communicates, and described annular groove bottom is provided with bottom chamber runner, be provided with described bottom chamber runner control valve or Directly it is connected with fluid interface.
A kind of 9. low-loss leaf formula ladder hydraulic press according to claim 7 or 8, it is characterised in that:Influent stream alveolus section is right The control chamber connection discharge chamber answered, discharges control chamber connection influent stream chamber, bottom chamber corresponding to the section of alveolus and connects pressure current through annular groove Body interface.
A kind of 10. low-loss leaf formula ladder hydraulic press according to claim 1, it is characterised in that:Described back casing and Flow inlet, outlet, fluid introduction port and Fluid outlet are respectively arranged with procapsid.
CN201710654990.4A 2017-08-03 2017-08-03 A kind of low-loss leaf formula ladder hydraulic press Withdrawn CN107420300A (en)

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CN201710654990.4A CN107420300A (en) 2017-08-03 2017-08-03 A kind of low-loss leaf formula ladder hydraulic press

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Application Number Priority Date Filing Date Title
CN201710654990.4A CN107420300A (en) 2017-08-03 2017-08-03 A kind of low-loss leaf formula ladder hydraulic press

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