CN1673577A

CN1673577A - Rotary positive displacement hydraulic device

Info

Publication number: CN1673577A
Application number: CN 200510068671
Authority: CN
Inventors: 彭利; 彭凌宇
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-04-26
Filing date: 2005-04-26
Publication date: 2005-09-28

Abstract

The rotary volumetric hydraulic mechanism includes block type hydraulic pump, motor and driver. The rotor block slot has profile curve of involute with pressure angle in the reference circle equal to 0 deg and geometrical parameters in modular system. Based on the specific application, the rotor bearing may be DU bearing or hydrostatic bearing. The present invention has the features of simple structure, easy manufacture, use and maintenance and low cost. The present invention has the adaptation range covering gear pump, blade pump, plunger pump and motor, and may form one new technology to develop serial products.

Description

Rotary positive displacement hydraulic device

One, technical field:

The present invention relates to a kind of rotary positive displacement hydraulic device, particularly relate to a kind of the variation and finish the work, comprise the hydraulic pressure installation of oil hydraulic pump, oil hydraulic motor, fluid drive by slide member reciprocal radial motion in the rotor turning course formation working chamber volume that assembles successively in uniform each groove of rotor periphery.

Two, background technique:

With the immediate background technique of the present invention be: I am 2004100715265 in application number, publication number is CN1587751A, and name is called the technological scheme that proposes in the application for a patent for invention of " rotary positive displacement hydraulic device and hydraulic driving type petroleum production oil pump ".This background technique scheme, providing a kind of is made of rotor part and stator component two-part, in the rotor turning course, be subjected to the reciprocal radial motion of restriction with the eccentric track ring cavity wall that is provided with of rotor rotational axis by the mating component in the uniform groove of main component periphery in the rotor part, form working rotor liquid cavity volume and change the hydraulic pressure installation of realizing pressing defeated working solution or driving the rotor rotation by pressure liquid; Comprising slide block type oil hydraulic pump, oil hydraulic motor and fluid drive.

Oil hydraulic pump, oil hydraulic motor, fluid drive product according to the background technique structure are compared with the corresponding product that has now in usefulness, though on the mixed economy effect aspect manufacturing and the use, all have remarkable advantages, but, its rotor periphery is used to assemble the mating groove structure of slide member, still there is deficiency in the structure of rotor bearing, simultaneously, fail to provide the solution that how to constitute the complete series of this product.

Three, summary of the invention:

Technical problem to be solved by this invention is: based on background technique, remedy above-mentioned deficiency wherein, from manufacturing and the application that makes things convenient for product, adopt " modulus " to make by structure, the structure of improving rotor bearing, the elementary structure parameter that has improved the equipped groove of rotor periphery slide block and improve the product technology performance and constitute complete product series of the present invention.

The solution of above-mentioned technical problem, realized by following scheme:

Based on background technique, that is: by the Assembly of part of rotating in the work, the present invention is called rotor part and by the Assembly of all parts beyond this rotor part, the present invention is called this two-part Assembly of stator component and constitutes this device; In the internal structure of this hydraulic pressure installation, its rotor part has two kinds of basic structures, first kind: by in the uniform parallel to an axis groove of rotor subject member periphery one by one assembling can constitute rotor part along the slider component that cell wall radially slides, this rotor subject member is hollow solid of rotation, each groove spacing wall place that is equipped with the both sides end face at axis body position, groove place in the uniform slide block of periphery has guiding gutter one by one between two parties, 1/2 of this guiding gutter circumferential width≤circumferential mean breadth of each groove spacing wall, axially the longitudinal section is the right angle equilateral triangle that the two straight flange length of sides equate with the groove depth of each uniform groove, two side ends outer axial face beyond this axis body position is the fine finishing axial plane that matches with sliding bearing, and an end in endoporus or hole is provided with the structure that constitutes or connect coupling; Second kind: the uniform slide block of periphery entire body of rotor subject member is equipped with groove, endoporus is the sliding bearing working surface that connects, the guiding gutter structure of both sides end face is identical with first kind structure, in its periphery, assembling drive plate axially placed in the middle, slider component are assemblied in one by one respectively in the equipped groove of the slide block that coils both sides and constitute rotor part; Slider component structure in two kinds of structures is identical, all be equivalent to that cooperation diameter of bore by the member that matches with it in external diameter and the stator component equates, prism that axial width and equipped slot length correspondent equal, its parallel axes of hollow cylinder upper edge that radial thickness is relevant with equipped groove radial depth intercept; In the internal structure of stator component, the endoporus that matches with rotor slide block periphery is the sliding bearing working surface, the fixing off-centre of its shaft axis and rotor rotational axis is provided with or can continuously changes eccentric value, has the sliding bearing structure that support rotor runs well, perhaps has the stationary support axle that matches with rotor subject member endoporus sliding bearing working surface, and, the axial plane of this axle is to cut apart in two hemi-pinacoids at interface to be provided with plane static pressure groove with the bore of stator plane, circumference shaft axis eccentric direction line place of matching with the slide block periphery, this static pressure groove is by the rotor inner duct or directly link up the structure that formation confession hydrostatic pressure is slidingly matched mutually with corresponding working rotor chamber; Has the structure that constitutes the unsteady thrust plate of compensation hydraulic sealing by flow disk body and flexible seals; Divide according to the concrete structure difference of this device: stator component has inner chamber peripheral wall shaft axis, and fixedly off-centre is provided with structure is quantitative hydraulic pump or motor with respect to the rotor rotational axis, having inner chamber peripheral wall shaft axis is volume adjustable hydraulic pump or motor with respect to rotor rotational axis change eccentric structure, what have that rotor subject member periphery is set with the external drive plate element structure of pass-out stator component between two parties is dish transmission fluid press pump or motor, have and be provided with the working solution tank in the stator component, the cavity volume of two assemblings of arranged in co-axial alignment rotor in the body, be equipped with separately the rotor part of the different displacements of running respectively in two cavity volumes respectively, by being fitted to flow-distributing valve and the associated groove between the two rotor cavity volumes, the hole, pipe passage is the hydraulic differential driver with being connected to this device of coordinating the periodic duty loop structure of conducting by working state between working solution tank and two rotor cavity volumes automatically, wherein: the radial plain bearing working surface axis that two rotor cavity volume inner chambers match with the slider component outer axial face is with respect to all fixing eccentric setting of rotor rotational axis, the power rotor discharge capacity is a hydraulic retarder less than the passive rotor discharge capacity, the power rotor discharge capacity is the hydraulic pressure speed increaser greater than the passive rotor discharge capacity, and what the inner chamber radial plain bearing working surface axis of one of two rotor cavity volumes can change eccentric value with respect to the rotor rotational axis is hydraulic transformer;

Hydraulic pressure installation of the present invention is with respect to the improvement innovation part of background technique:

The elementary contour curve of its rotor slide block slot adopts involute, and the pressure angle of this curve in the standard pitch circle place is 0 °; Its basic geometric parameters adopts modular system, and the unit of modulus is a millimeter, is divided into first, second two series; First series is got: 1,1.5,2,4,5,6,8,10,12,16,20,25,32,40,50, and second series is got: 3,7,9,14,18,22,28,36,45; Wherein, modulus equals the 1, the 1.5th, little modulus series; Modulus series more than or equal to 2 in first series is preferentially to choose modulus; The basic geometric parameters relevant with modulus be, the axial plane axis that bore of stator matches with rotor slide block outer circumferential face equals modulus with respect to the maximum eccentricity of rotor rotational axis, and promptly the maximum radial reciprocating working stroke of rotor slide block equals modulus and multiply by 2; The circumferential width of slide block cross section and radial thickness all equal modulus and multiply by 3; The standard pitch diameter of the equipped groove of rotor subject member slide block equals two times of moduluses and multiply by the groove number, outside diameter equals standard pitch diameter and adds modulus, groove radially be called groove depth entirely deeply, equal modulus and multiply by 3, wherein, cylindrical to the radial depth of standard pitch circle is called the groove top deeply, equals modulus and multiply by 0.5, it is dark that standard pitch circle to the radial depth of bottom land is called bottom land, equals modulus and multiply by 2.5; The elementary contour curve of groove, promptly the intersection point spacing of two involute-type cell walls and standard pitch circle circumference is called groove width, and the circumferential width equivalence with slide block equals modulus and multiply by 3; When setting maximum service pressure smaller or equal to 10Mpa, the minigroove number of rotor slide block slot is more than or equal to 16, and when setting maximum service pressure greater than 10MPa, the minigroove number is more than or equal to 24;

Its rotor supports bearing is selected a kind of in following two kinds of basic structures on the basis of adopting the large-diameter sliding bearing, first kind: bearing is that employing is that matrix, lead bronze powder or silk are sinter layer, soak the compound DU bearing that constitutes of knot teflon in a vacuum by sheet metal, realizes lubricating by seal clearance leakage fluid and fuel tank feed flow in the work; Second kind: bearing is the confession of adopting its static pressure vallecular cavity and feed flow duct thereof the to have in good time cleaning structure static pressure associating sliding bearing that surges, introducing the pressure working solution of bearing static pressure vallecular cavity by prefabricated feed flow duct in the rotor realizes lubricated, promptly, in this bearing working face is that an end of the symmetrically arranged two static pressure vallecular cavities in interface is linked up with the working rotor chamber of offside mutually via prefabricated duct in the rotor respectively with the bore of stator shaft axis with respect to plane, rotor rotational axis eccentric direction line place, the other end of two static pressure vallecular cavities is via prefabricated in the rotor, duct by stop valve control break-make directly is communicated with, under the working state, stop valve is closed, introducing the static pressure balancing rotor work radial force and the realization of the pressure working solution formation of loading ability of bearing district static pressure vallecular cavity lubricates, open stop valve, two static pressure vallecular cavities and feed flow duct thereof constitute the close passage that rotor high low pressure active chamber is communicated with, by washing away continuously of working solution stream, accumulate in the solid pollution particulate in bearing static pressure vallecular cavity and the feed flow duct thereof rapidly in the removing work, realize the function of bearing cleaning whole lubricating system.

Quantitative hydraulic pump wherein or motor have following peculiar structure:

Constitute rotor part by equipped successively slide block in the circumferential groove of rotor subject member, these parts are assemblied in the inner chamber of the stator component that is made of eccentric shaft bearing sleeve, housing, the unsteady thrust plate in both sides and rear and front end lid Assembly, promptly constitute quantitative hydraulic pump of the present invention or motor; In rotor part, one end of the endoporus of rotor subject member is provided with the drive mechanism of involute inner spline or rectangle internal spline form, in this drive mechanism with interior position via packing dish member with the endoporus shutoff, liquid-through hole and packing dish are set in the position that crosses of this end outer axial face and uniform slide block slot axis body connect the material selection 40Cr of this member, GCr15 surface hardening or 38CrMoAl surface carburization with interior endoporus; Sliding block material is selected wear resisting cast iron or HT300 or powder metallurgy for use; In stator component, case material is selected spheroidal graphite cast iron or cast steel for use, axially placed in the middle, radially be oppositely arranged the oil drain out that advances of inside and outside perforation, the capacity eccentric bearing cover material is selected Bearing Steel surface hardening or 38CrMoAl surface carburization for use, the plane that its outer circumferential face constitutes with eccentric direction line and axis is interface ± 15 ° with interior axial plane is transition fit face with the housing endoporus, remaining part is recessed, after the assembling, constitute the working rotor chamber thus and advance liquid chunnel between the oil drain out, the thrust plate that floats is constituted by flow disk body and flexible seals, disk body material selection HT300 or powder metallurgy, be provided with arc flow groove in the positive card that cooperates with the rotor-side end face, uniform liquid-through hole connects with back of the body card in the groove, the outer arc dia of this groove equals rotor subject member outside diameter and deducts a modulus, the back of the body card of this dish, eccentric shaft bearing sleeve eccentric direction line with rigging position is a center line, radially connecting width is set is rotor subject member slide block slot two grooves 1.1 to 13 times rectangle grooves at interval, bottom land is provided with cross groove perpendicular to center line, the interior ring of this card is recessed annular groove, the bottom surface of groove and rectangle groove bottom land cross, locate same plane, the outer circumferential face profile and the excentric sleeve circumferential profile of this dish are in full accord, flexible seals material selection nitrile butadiene rubber, the recessed annular groove of interior ring of profile and disk body back of the body card and the radially rectangle groove that joins with it are consistent, axial thickness is between 1.15 to 1.25 times of groove depth, after the assembling, sealing part periphery is sealed by rigid body, axially be compressed, the elastic force that forms promotes the positive card of disk body and the rotor-side end face is fitted, constitute initial sealing, under the working state, it is curved in pressure liquid one side is pressed in the rectangle groove, keep this rectangle vallecular cavity to link up thus via the cross groove and the rotor pressure sap cavity of bottom land, rely on hydraulic coupling to keep the working seal of positive card of disk body and rotor-side section, before, rear end cover material selection spheroidal graphite cast iron or HT300, the rear end cover endoporus is a blind hole, outer end of hole is equipped with rotary shaft lip seal in the front cover, on this basis, two kinds of different structures are arranged, first kind: endoporus is equipped with the DU composite sliding bearing, second kind: endoporus directly prepares the sliding bearing working surface, in the working surface, with eccentric shaft bearing sleeve eccentric direction line is symmetrical boundary line, be symmetrical arranged the static pressure groove, one end of two grooves is respectively via the interior edge face of auxiliary hole pass-out lid symmetry boundary line opposite side, the other end of two grooves joins via auxiliary hole and two stomidiums that are assemblied in the stop valve of lid respectively, by the switch of this valve, control the break-make between two grooves; In overall structure, rotor part periphery suit eccentric shaft bearing sleeve, the equipped thrust plate that floats in both sides, fix via positioning dowel, constitute an one-piece element, be assemblied in the housing endoporus in the lump, both sides assembling front and rear cover, fixedly finish assembling by connecting bolt, it advances oil drain out via the interval between housing endoporus and the eccentric shaft bearing sleeve periphery, interval between front and rear cover interior edge face and the flow disk body back of the body card, the flow groove and the liquid-through hole of flow disk body, rotor both sides end face and working rotor chamber are linked up, all static pressure grooves of front and rear cover hydrostatic bearing all are to link up mutually with the working rotor chamber of offside via auxiliary hole, guarantee that the working solution of introducing loading ability of bearing district static pressure groove must be a pressure liquid.

Volume adjustable hydraulic pump wherein or motor have following peculiar structure:

Unsteady thrust plate in its rotor part and the stator component, the structure of front and rear cover and integral installation distribution structure and quantitative hydraulic pump or motor are in full accord, and difference is with it: by the guide sleeve and displacement bearing housing and the radially relative balance fluid cylinder of housing periphery and the discharge capacity regulating mechanism that displacement bearing housing displacement drive mechanism constitutes this pump or motor of being assemblied in that are assemblied between housing endoporus and the rotor periphery; Promptly, displacement bearing housing inner hole sleeve contains slide block, the periphery guiding groove matches with guide sleeve endoporus guide pad, constitute reciprocal radial alignment displacement structure, thereby limit the different values of the reciprocal radial displacement of rotor slide block, promptly change the work discharge capacity, when the shaft axis of this cover is moved to opposite side by a side of rotor rotational axis, promptly changing working solution flows to, the guide pad that the ring cavity that constitutes between displacement bearing housing periphery and the guide sleeve endoporus is matched, the groove sealed separation is an equity, all the time office height under the working state, two semi-ring chambeies of low pressure different conditions, guiding groove is linked up with low hydraulic pressure semi-ring chamber all the time via matching gap with the cavity volume that forms between guide pad cooperates and is kept low hydraulic pressure, the balance fluid cylinder is the single-acting fluid cylinder, its piston effective pressure sectional area equals 1/2 of guiding groove basal area, be equipped with shuttle valve in its liquid cylinder, integral installation is assigned in the fitting seat oral area position of housing, the liquid-through hole that is communicated with housing and liquid cylinder and shuttle valve chamber via the guide sleeve both sides, be subjected to the shuttle valve core to lead control, working solution in this fluid cylinder working barrel chamber is pressure liquid all the time, under the promotion of hydraulic coupling, the piston rod of this liquid cylinder piston passes housing, the pre-manufactured hole of guiding body, rod end contacts the bottom land of displacement bearing housing guiding groove all the time, keep in a basic balance with the radially relative driving force of displacement bearing housing displacement drive mechanism, this displacement drive mechanism and equilibrium liquid cylinder diameter are on the relative fitting seat mouth that is assemblied in the housing opposite side, divide according to architectural difference, this driving mechanism can be a screw mechanism, or drag link mechanism, or the manually servo or electrical servo or the servo fluid cylinder mechanism of surging, or pressure or flow automatic control mechanism.

Dish transmission fluid press pump wherein or motor have following peculiar structure:

By endoporus is the sliding bearing working surface that connects, the peripheral, axial of the rotor subject member of the equipped groove of the slide block of the uniform perforation of outer circumferential face is assembled drive plate between two parties, slide block is assemblied in the interior formation of the slide block slot rotor part of drive plate both sides successively, support axle and pass rotor part, outer axial face and rotor subject member endoporus sliding bearing working surface are movingly, the equipped thrust plate that floats of the inner chamber medial extremity of two housings, endoporus is equipped with the eccentric shaft bearing sleeve, Assembly Sealing in the side direction annular groove of nose end, seal rotor part by the drive plate both sides, promptly constitute dish transmission fluid press pump of the present invention or motor through fixedlying connected with the support axle by clamping bolt; Within it in the bilge construction: in the axial plane that supports axle, the plane that constitutes with the shaft axis of its rigging position and eccentric shaft bearing sleeve eccentric direction line is the static pressure planar slot that is provided with in the two halves axial plane on boundary with parallel axes, and the endoporus preparation of this axle has with outside and is equipped with matching hole and the positioning spline that axle head matches; The thrust plate that floats is made of disk body and flexible seals two-part, the positive card that cooperates with the rotor-side end face of disk body is that symmetrical boundary line is symmetrical arranged arc flow groove with eccentric shaft bearing sleeve eccentric direction line, the outer arc dia of groove equals rotor subject member external diameter and deducts a modulus, the outer shroud of the back of the body card of this disk body is provided with annular groove, the internal diameter of annular groove is consistent with the endoporus axle center and the diameter of eccentric shaft bearing sleeve, in annular groove with interior card, eccentric direction line with the eccentric shaft bearing sleeve serves as directly to the midline, outer arc is set and the annular groove inner ring surface joins, angle equals the fan groove of 1.05 to 1.2 times of the two groove angles of rotor subject member slide block slot, the same plane of bottom land and circular groove bottom, flexible seals material selection nitrile butadiene rubber, it is consistent to connect fan groove in plane shape and the disk body back of the body card annular groove, and thickness is 1.15 to 1.25 times of groove depth; Be assemblied in the combination seal of housing endoporus tip side in annular groove and be the side direction lip rotating disc seal ring made by nitrile butadiene rubber and constitute by graphite impregnation epoxy resin or by seal ring two-part that the teflon of filling graphite is made, assembly relation is that seal ring is interior, seal ring outside, seal ring is by axial compression 10% to 30%, under the effect of elastic force, keep the lip end of seal ring and the anchor ring of seal ring to fit tightly the realization sealing with the drive plate card simultaneously.

Hydraulic speed-changing driver wherein has following peculiar structure:

By the coaxial assembling of the described constant displacement hydraulic motor of slide block type volume adjustable hydraulic pump and claim 2, via combination flow-distributing valve and hydraulic pipe line the active chamber group of working solution tank, time liquid filter, pump and motor is even linked up to coordinating the hydraulic work loop of conducting, constituted universal slide block type hydraulic speed-changing driver; Perhaps, by slide block type volume adjustable hydraulic pump and the coaxial assembling of slide block type dish transmission constant displacement hydraulic motor, via combination flow-distributing valve and hydraulic pipe line the active chamber group of working solution tank, time liquid filter, pump and motor is even linked up to coordinating the hydraulic work loop of conducting, formation dish driving block formula hydraulic speed-changing driver; Wherein combination flow-distributing valve structure and assembly structure are: in the body of volume adjustable hydraulic pump housing, be arranged in parallel two along the endoporus axial direction and to be used to assemble the perforation valve pocket of flow-distributing valve assembly, each is provided with liquid-through hole and the communication of housing inner chamber between two parties two valve pockets, two groups of structures are identical, by valve body, interior cone valve, interior pressure spring, slide valve buckle, outer cone valve, the external compression spring, the flow-distributing valve assembly that spacing snap ring and outer seat constitute assembled in sequence respectively connects in the valve pocket in two, before after two ends are assembled, rear end cover limits and promptly constitutes this valve, externally total feed liquor hydraulic fluid port of this valve and time liquid hydraulic fluid port, internally respectively with variable displacement pump and fixed displacement motor active chamber automatic control conducting, the feed liquor hydraulic fluid port of this valve joins by pipeline and working solution tank, returning the liquid hydraulic fluid port joins by pipeline and time liquid filter, filter is secured on the working solution tank, the in line fuel tank of filtered solution constitutes the complete hydraulic work system of a complete function thus; The assignment process of this valve is, set: two valve pockets and endovascular component are respectively A valve and B valve, what variable displacement pump and A valve were linked up is the imbibition active chamber, what link up with the B valve is the discharge opeing active chamber, then, working solution from fuel tank through the feed liquor pipeline, this valve feed liquor hydraulic fluid port, push the interior cone valve of A valve open, after entering the imbibition active chamber pressurization of pump, enter the B valve via the discharge opeing active chamber, after the outer cone valve of pushing the B valve open enters the work of motor operations chamber, enter the A valve again, promote its outer cone valve and drive the slide valve buckle expert, via the passage between slide valve buckle of opening and the outer seat, return the liquid hydraulic fluid port, the liquid return pipe road, return liquid filter, return fuel tank, constitute complete work cycle, suction when pump, the conversion of row's active chamber, the corresponding thereupon conversion of the operating state of two valves, the complete work cycle of formation working solution reverse flow.

The beneficial effect that technique scheme can cause is:

1, simple in structure, part, accessory kind quantity reduce, rotor slide block slot profilogram adopts involute, the dependency structure parameter adopts modular system, make the realization difficulty of processing and assembly precision obviously reduce, help standardization, mass manufacturing and form the complete series product, use, safeguard, maintenance is simple relatively, therefore, has manufacturing, comprehensive advantage that user cost is low.

2, difference according to operating conditions, rotor bearing is selected the DU bearing for use and is had a kind of in the confession hydrostatic pressure bearing of in good time cleaning static pressure oil pocket and oil channel structure, it is big effectively to solve rotor radial power, the difficult problem that bearing life is low, simultaneously, overall structure is regular, the stressed relative equilibrium of key components and parts, rotary inertia is little, therefore, pressure, rotating speed, power, discharge capacity, the Applicable scope of moment of torsion is wide in range, and application area can cover gear, blade, plunger, whole application area of these existing three big main body oil hydraulic pumps and motor product might form the fourth-largest new hydraulic pump and motor product line.

Four, description of drawings:

Fig. 1 is first embodiment in the hydraulic pressure installation of the present invention: rotor bearing adopts the integrally-built front view that partly cuts open of slide block type quantitative hydraulic pump of DU bearing, and Fig. 2 is that it partly cuts open side view; Fig. 3 to Figure 19 is the concrete tectonic maps of its major part; Wherein, Fig. 3 and Fig. 4 are the parts drawings of slide block, Fig. 5 and Fig. 6 are the parts drawings of rotor subject member, Fig. 7 and Fig. 8 are the parts drawings of eccentric shaft bearing sleeve, Fig. 9 and Figure 10 are the parts drawings of housing, and Figure 11, Figure 12, Figure 13 are the parts drawings of flow disk body, and Figure 14 and Figure 15 are the parts drawings of flexible seals, Figure 16 and Figure 17 are the parts drawings of rear end cover, and Figure 18 and Figure 19 are the parts drawings of front cover.Figure 20, Figure 21, Figure 22 are second embodiments: rotor bearing adopts one of the metering pump of the confession hydrostatic pressure sliding bearing that oil duct and oil pocket can clean in good time and part of motor, and the parts drawing of front cover, Figure 23 and Figure 24 are the parts drawings of end cap thereafter; Figure 26 is the integrally-built front view that partly cuts open of this embodiment, and Figure 25 is that it partly cuts open side view, and Figure 27 is the sectional elevation by position shown in Figure 26.Figure 29 is the 3rd embodiment: rotor bearing adopts the volume adjustable hydraulic pump and the integrally-built front view that partly cuts open of motor of DU bearing, Figure 28 is that it partly cuts open side view, and Figure 30 and Figure 31 are one of its parts, the parts drawing of guide sleeve, Figure 32 and Figure 33 are another parts, the parts drawing of displacement bearing housing.Figure 35 is the 4th embodiment: what bearing adopted the volume adjustable hydraulic pump of the confession hydrostatic pressure sliding bearing that oil duct and oil pocket can clean in good time and motor partly cuts open front view, and Figure 34 is its side view; Figure 36 is the 5th embodiment: the vertical profile front view of dish transmission constant displacement hydraulic motor, Figure 37 is that it partly cuts open side view, Figure 38 to Figure 49 is the parts drawing of its major part, wherein: Figure 38 is a seal ring, Figure 39 is a seal ring, and Figure 40 and Figure 41 are flexible seals, and Figure 42, Figure 43, Figure 44, Figure 45 are the flow disk bodies, Figure 46 and Figure 47 are stationary spindles, and Figure 48 and Figure 49 are the rotor subject members.Figure 50 is the 6th embodiment: the hydraulic speed-changing driver partly cut open front view, Figure 51 is its side view, Figure 52 is the enlarged view at position shown in Figure 51, Figure 53 is the sectional view by position shown in Figure 52.Figure 54 is the 7th embodiment: the front view of dish transmission fluid pressure and speed driver, Figure 55 is its side view.

Five, mode of execution:

Can construct a kind of prior art that obviously is different from order to show according to technical solution of the present invention, comprise quantitatively, the hydraulic parts new product family of volume adjustable hydraulic pump and motor and hydraulic speed-changing driver, now enumerate attached seven embodiments shown in the drawings and be illustrated.Wherein:

Quantitative hydraulic pump and motor have three kinds of fundamental types.First kind: rotor bearing adopts the DU bearing, extremely shown in Figure 19 as the Fig. 1 in the accompanying drawing, one end of rotor subject member 101 endoporus is provided with the transmission internal spline, spline is equipped with every envelope dish 100 with interior position, equipped slide block 102 constitutes rotor part in each slide block slot of periphery, this parts periphery suit eccentric shaft bearing sleeve 103, two are constituted the positive card of the thrust plate that floats and the side end face applying of this parts working position by flow disk body 107 and flexible seals 108, be connected to an one-piece element via positioning dowel 104, be assemblied in the endoporus of housing 105, the endoporus of front cover 106 is equipped with DU sliding bearing 109, nose end is equipped with rotary shaft lip seal 110, the endoporus of rear end cover 111 is blind holes, be equipped with the DU bearing, be assemblied in the axle head of rotor part from both sides, connect as one the complete structure that promptly constitutes this pump and motor via bolt 112.In the bilge construction, advance oil drain out within it respectively via the disk body back of the body card of the prefabricated septal pathways between housing endoporus and the eccentric shaft bearing sleeve periphery, two thrust plates and flow groove, hole and the communication of working rotor chamber of prefabricated interval between the forward and backward end cap inner disc face and thrust plate.Via rear end cover with every the envelope dish endoporus of part except the rotor subject member internal spline is constituted the transition cavity volume that retains leakage fluid and Lubricants is provided for bearing.Second kind: rotor bearing adopts capable of washing, from feed flow, static-pressure sliding bearing, extremely shown in Figure 27 as the Figure 20 in the accompanying drawing, except that the structure relevant with rotor bearing, all the other are identical with first kinds of structures, promptly, the endoporus of its front cover 106B and rear end cover 111B is the static-pressure sliding bearing working surface, constitute from the oil duct of rotor active chamber by auxiliary hole ya and kd to bearing static pressure groove cb feed flow, be made of from the oil duct of rotor active chamber to bearing static pressure groove ca feed flow auxiliary hole yb and kc, stop valve that is made of 010 assembling of needle-valve 011 and valve body and auxiliary hole ka and kb constitute the cleaning structure of this bearing static pressure vallecular cavity and relevant oil duct; Stop valve is open-minded, and two static pressure grooves and oil duct thereof constitute the closed loop of working solution in the pump housing, and the solid pollutant that accumulates in oil pocket and the oil duct is rinsed well rapidly; Stop valve is closed, and this bearing recovers normal working, and the working solution of introducing loading ability of bearing district static pressure groove must be a pressure liquid, in order to the radial hydraulic pressure of balancing rotor.The third: be equipped with drive plate in the rotor part, extremely shown in Figure 49 as the Figure 36 in the accompanying drawing, the periphery of rotor subject member 302, assembling drive plate 307 axially placed in the middle, assemble slide block 310 in the slide block slot of dish both sides one by one and constitute rotor part, the outer axial face of stationary spindle 301 is fine finishing circumferential surfacies, parallel to an axis, radially be shaped on four road planar slots relatively in advance, be assemblied in the endoporus of rotor part, cooperatively interact, constitute confession hydrostatic pressure sliding matching structure, the endoporus of two housings 304 assembles the unsteady thrust plate that is constituted by flexible seals 309 and flow disk body 308 respectively successively, eccentric shaft bearing sleeve 303, rotating disc lip-type packing 305 and seal ring 306, circumferentially locate via holding down bolt 311, seal rotor part, promptly constitute this pump and motor through bolt from both sides.

Volume adjustable hydraulic pump and motor are divided according to the rotor bearing structure, also are divided into adopting the DU bearing and from feed flow, capable of washing, these two kinds of fundamental types of static-pressure sliding bearing; Employing DU bearing, specifically construct as Figure 28 in the accompanying drawing and shown in Figure 29, adopt hydrostatic bearing as Figure 34 with to shown in Figure 35, the structure relevant with bearing is corresponding consistent with above-mentioned metering pump and motor, difference is, the balance fluid cylinder that is made of 204 assemblings of piston 203 and liquid cylinder is just suitable with the periphery hydraulic resultant force with this cover endoporus via the value to the radial thrust of displacement bearing housing 202 that is assemblied in that shuttle valve 205 in the liquid cylinder leads that pressure working solution that control introduces forms, with the controlling and driving mechanism that constitutes by pedestal 206 and push rod 207 assemblings the jacking force of this cover is balanced each other, drive the displacement bearing housing under the guiding of guide sleeve 201 by the advance and retreat of operating this push rod, back and forth move radially, and then the radially reciprocating working stroke of change slide block, realize the in good time variation of this pump and motor operations discharge capacity.

The hydraulic speed-changing driver also is divided into two kinds of fundamental types, shown in Figure 54 and Figure 55 is dish transmission fluid pressure and speed driver, promptly, volume adjustable hydraulic pump 501 and the 502 coaxial assemblings of dish transmission fluid pressure motor, combination flow-distributing valve pfb is assemblied among the housing of volume adjustable hydraulic pump, this valve is controlled conducting via prefabricated duct in pump and the motor body with two working rotor chambeies, the liquid hydraulic fluid port that returns of valve is communicated with time liquid filter 504 via liquid return pipe road 506, the feed liquor hydraulic fluid port is communicated with fuel tank 503 via feed flow pipeline 505, the rotor axle head of motor 500 is connected with the drive mechanism of the rotor subject member of pump by the transmission shaft 510 that runs through the motor spindle center hole, constitutes the complete structure of this driver.Shown in Figure 50 to Figure 53 is universal hydraulic speed-changing driver, volume adjustable hydraulic pump 401 and constant displacement hydraulic motor 402 are integral structures, the feed liquor hydraulic fluid port of combination flow-distributing valve pf is communicated with fuel tank 403 via feed flow pipeline 405, return the liquid hydraulic fluid port and be communicated with the overall structure that constitutes this driver with time liquid filter 406 via liquid return pipe road 404, the internal structure of combination flow-distributing valve pf is shown in Figure 53: two groups of structures are identical, by valve body 01, interior cone valve 02, interior pressure spring 03, slide valve buckle 04, outer cone valve 05, external compression spring 06, the combination flow-distributing valve assembly that spacing snap ring 07 and outer seat 08 constitute assembled in sequence respectively constitutes this combination flow-distributing valve by total feed liquor hydraulic fluid port and time liquid hydraulic fluid port with in parallel connection of two assemblies in two chambeies.

Claims

1, a kind of rotor part that the part Assembly constituted by rotating in the work and by the rotary positive displacement hydraulic device that is assembled of the stator component that constituted of moving parts Assembly without spin in the work, comprise oil hydraulic pump, oil hydraulic motor and hydraulic differential driver, its rotor part has two kinds of basic structures, first kind: by in the uniform parallel to an axis groove of rotor subject member periphery one by one assembling can constitute rotor part along the slider component that cell wall radially slides, this rotor subject member is hollow solid of rotation, each groove spacing wall place that is equipped with the both sides end face at axis body position, groove place in the uniform slide block of periphery has guiding gutter one by one between two parties, 1/2 of this guiding gutter circumferential width≤circumferential mean breadth of each groove spacing wall, axially the longitudinal section is the right angle equilateral triangle that the two straight flange length of sides equate with the groove depth of each uniform groove, two side ends outer axial face beyond this axis body position is the fine finishing axial plane that matches with sliding bearing, and an end in endoporus or hole is provided with the structure that constitutes or connect coupling; Second kind: the uniform slide block of periphery entire body of rotor subject member is equipped with groove, endoporus is the sliding bearing working surface that connects, the guiding gutter structure of both sides end face is identical with first kind structure, in its periphery, assembling drive plate axially placed in the middle, slider component are assemblied in one by one respectively in the equipped groove of the slide block that coils both sides and constitute rotor part; Slider component structure in two kinds of structures is identical, all be equivalent to that cooperation diameter of bore by the member that matches with it in external diameter and the stator component equates, prism that axial width and equipped slot length correspondent equal, its parallel axes of hollow cylinder upper edge that radial thickness is relevant with equipped groove radial depth intercept; In the internal structure of stator component, the endoporus that matches with rotor slide block periphery is the sliding bearing working surface, the fixing off-centre of its shaft axis and rotor rotational axis is provided with or can continuously changes eccentric value, has the sliding bearing structure that support rotor runs well, perhaps has the stationary support axle that matches with rotor subject member endoporus sliding bearing working surface, and, the axial plane of this axle is to cut apart in two hemi-pinacoids at interface to be provided with plane static pressure groove with the bore of stator plane, circumference shaft axis eccentric direction line place of matching with the slide block periphery, this static pressure groove is by the rotor inner duct or directly link up the structure that formation confession hydrostatic pressure is slidingly matched mutually with corresponding working rotor chamber; Has the structure that constitutes the unsteady thrust plate of compensation hydraulic sealing by flow disk body and flexible seals; Divide according to the concrete structure difference of this device: stator component has inner chamber peripheral wall shaft axis, and fixedly off-centre is provided with structure is quantitative hydraulic pump or motor with respect to the rotor rotational axis, having inner chamber peripheral wall shaft axis is volume adjustable hydraulic pump or motor with respect to rotor rotational axis change eccentric structure, what have that rotor subject member periphery is set with the external drive plate element structure of pass-out stator component between two parties is dish transmission fluid press pump or motor, have and be provided with the working solution tank in the stator component, the cavity volume of two assemblings of arranged in co-axial alignment rotor in the body, be equipped with separately the rotor part of the different displacements of running respectively in two cavity volumes respectively, by being fitted to flow-distributing valve and the associated groove between the two rotor cavity volumes, the hole, pipe passage is the hydraulic differential driver with being connected to this device of coordinating the periodic duty loop structure of conducting by working state between working solution tank and two rotor cavity volumes automatically, wherein: the radial plain bearing working surface axis that two rotor cavity volume inner chambers match with the slider component outer axial face is with respect to all fixing eccentric setting of rotor rotational axis, the power rotor discharge capacity is a hydraulic retarder less than the passive rotor discharge capacity, the power rotor discharge capacity is the hydraulic pressure speed increaser greater than the passive rotor discharge capacity, and what the inner chamber radial plain bearing working surface axis of one of two rotor cavity volumes can change eccentric value with respect to the rotor rotational axis is hydraulic transformer;

Feature is:

The elementary contour curve of the equipped groove of its rotor slide block adopts involute, and the pressure angle of this curve in the standard pitch circle place is 0 °; Its basic geometric parameters adopts modular system, and the unit of modulus is a millimeter, is divided into first, second two series; First series is got: 1,1.5,2,4,5,6,8,10,12,16,20,25,32,40,50, and second series is got: 3,7,9,14,18,22,28,36,45; Wherein, modulus equals the 1, the 1.5th, little modulus series; Modulus series more than or equal to 2 in first series is preferentially to choose modulus; The basic geometric parameters relevant with modulus be, the axial plane axis that bore of stator matches with rotor slide block outer circumferential face equals modulus with respect to the maximum eccentricity of rotor rotational axis, and promptly the maximum radial reciprocating working stroke of rotor slide block equals modulus and multiply by 2; The circumferential width of slide block cross section and radial thickness all equal modulus and multiply by 3; The standard pitch diameter of the equipped groove of rotor subject member slide block equals two times of moduluses and multiply by the groove number, outside diameter equals standard pitch diameter and adds modulus, groove radially be called groove depth entirely deeply, equal modulus and multiply by 3, wherein, cylindrical to the radial depth of standard pitch circle is called the groove top deeply, equals modulus and multiply by 0.5, it is dark that standard pitch circle to the radial depth of bottom land is called bottom land, equals modulus and multiply by 2.5; The elementary contour curve of groove, promptly the intersection point spacing of two involute-type cell walls and standard pitch circle circumference is called groove width, and the circumferential width equivalence with slide block equals modulus and multiply by 3; When setting maximum service pressure smaller or equal to 10Mpa, the minigroove number of rotor slide block slot is more than or equal to 16, and when setting maximum service pressure greater than 10MPa, the minigroove number is more than or equal to 24;

Its rotor supports bearing adopts a kind of in following two kinds of basic structures on the basis of adopting the large-diameter sliding bearing, first kind: bearing is that employing is that matrix, lead bronze powder or silk are sinter layer, soak the compound DU bearing that constitutes of knot teflon in a vacuum by sheet metal, realizes lubricating by seal clearance leakage fluid and fuel tank feed flow in the work; Second kind: bearing is the confession of adopting its static pressure vallecular cavity and feed flow duct thereof the to have in good time cleaning structure static pressure associating sliding bearing that surges, introducing the pressure working solution of bearing static pressure vallecular cavity by prefabricated feed flow duct in the rotor realizes lubricated, promptly, in this bearing working face is that an end of the symmetrically arranged two static pressure vallecular cavities in interface is linked up with relative working rotor chamber mutually via prefabricated duct in the rotor respectively with the bore of stator shaft axis with respect to plane, rotor rotational axis eccentric direction line place, the other end of two static pressure vallecular cavities is via prefabricated in the rotor, duct by stop valve control break-make directly is communicated with, under the working state, stop valve is closed, introducing the static pressure balancing rotor work radial force and the realization of the pressure working solution formation of loading ability of bearing district static pressure vallecular cavity lubricates, open stop valve, two static pressure vallecular cavities and feed flow duct thereof constitute the close passage that rotor high low pressure active chamber is communicated with, by washing away continuously of working solution stream, accumulate in the solid pollution particulate in bearing static pressure vallecular cavity and the feed flow duct thereof rapidly in the removing work, realize cleaning oil pocket and oil duct.

2, a kind of hydraulic pressure installation as claimed in claim 1, the present invention is referred to as slide block type quantitative hydraulic pump or motor, it is characterized in that:

Constitute rotor part by equipped successively slide block in the circumferential groove of rotor subject member, these parts are assemblied in the inner chamber of the stator component that is made of eccentric shaft bearing sleeve, housing, the unsteady thrust plate in both sides and rear and front end lid Assembly, promptly constitute quantitative hydraulic pump of the present invention or motor; In rotor part, one end of the endoporus of rotor subject member is provided with the drive mechanism of involute inner spline or rectangle internal spline form, in this drive mechanism with interior position via packing dish member with the endoporus shutoff, liquid-through hole and packing dish are set in the position that crosses of this end outer axial face and uniform slide block slot axis body connect the material selection 40Cr of this member, GCr15 surface hardening or 38CrMoAl surface carburization with interior endoporus; Sliding block material is selected wear resisting cast iron or HT300 or powder metallurgy for use; In stator component: case material is selected spheroidal graphite cast iron or cast steel for use, axially placed in the middle, radially be oppositely arranged the oil drain out that advances of inside and outside perforation, the capacity eccentric bearing cover material selects for use Bearing Steel to quench or the 38CrMoAl surface carburization, the plane that its outer circumferential face constitutes with eccentric direction line and axis is interface ± 15 ° with interior axial plane is transition fit face with the housing endoporus, remaining part is recessed, after the assembling, constitute the working rotor chamber thus and advance liquid chunnel between the oil drain out, the thrust plate that floats is constituted by flow disk body and flexible seals, disk body material selection HT300 or powder metallurgy, be provided with arc flow groove in the positive card that cooperates with the rotor-side end face, uniform liquid-through hole connects with back of the body card in the groove, the outer arc dia of this groove equals rotor subject member outside diameter and deducts a modulus, the back of the body card of this dish, eccentric shaft bearing sleeve eccentric direction line with rigging position is a center line, radially connecting width is set is rotor subject member slide block slot two grooves 1.1 to 1.3 times rectangle grooves at interval, bottom land is provided with cross groove perpendicular to center line, the interior ring of this card is recessed annular groove, the bottom surface of groove and rectangle groove bottom land cross, locate same plane, the outer circumferential face profile and the excentric sleeve circumferential profile of this dish are in full accord, flexible seals material selection nitrile butadiene rubber, the recessed annular groove of interior ring of profile and disk body back of the body card and the radially rectangle groove that joins with it are consistent, axial thickness is between 1.15 to 1.25 times of groove depth, after the assembling, sealing part periphery is sealed by rigid body, axially be compressed, the elastic force that forms promotes the positive card of disk body and the rotor-side end face is fitted, constitute initial sealing, under the working state, curved in the flexible body pressurized of pressure liquid one side in the rectangle groove, keep this rectangle vallecular cavity to link up via the cross groove and the rotor pressure sap cavity of bottom land, rely on hydraulic coupling to keep the working seal of positive card of disk body and rotor-side section, before, rear end cover material selection spheroidal graphite cast iron or HT300, the rear end cover endoporus is a blind hole, outer end of hole is equipped with rotary shaft lip seal in the front cover, on this basis, two end cap also has two kinds of different structures, first kind: endoporus is equipped with the DU composite sliding bearing, second kind: endoporus directly prepares the sliding bearing working surface, in the working surface, with eccentric shaft bearing sleeve eccentric direction line is symmetrical boundary line, be symmetrical arranged the static pressure groove, one end of two grooves is respectively via the interior edge face of auxiliary hole pass-out lid symmetry boundary line opposite side, the other end of two grooves joins via auxiliary hole and two stomidiums that are assemblied in the stop valve of lid respectively, controls break-make between two grooves by the switch of this valve; In overall structure, rotor part periphery suit eccentric shaft bearing sleeve, the equipped thrust plate that floats in both sides, fix via positioning dowel, constitute an one-piece element, be assemblied in the housing endoporus in the lump, both sides assembling front and rear cover, fixedly finish assembling by connecting bolt, it advances oil drain out via the interval between housing endoporus and the eccentric shaft bearing sleeve periphery, interval between front and rear cover interior edge face and the flow disk body back of the body card, the flow groove and the liquid-through hole of flow disk body, rotor both sides end face and working rotor chamber are linked up, all static pressure grooves of front and rear cover hydrostatic bearing all are to link up mutually with relative working rotor chamber via auxiliary hole, guarantee that the working solution of introducing loading ability of bearing district static pressure groove must be a pressure liquid.

3, a kind of hydraulic pressure installation as claimed in claim 1, the present invention is referred to as slide block type volume adjustable hydraulic pump or motor, it is characterized in that:

Unsteady thrust plate in its whole rotor part and the stator component, the structure of front and rear cover and integral installation distribution structure and the described hydraulic pressure installation of claim 2 are in full accord, and difference is with it: by the guide sleeve and displacement bearing housing and the radially relative balance fluid cylinder of housing periphery and the discharge capacity regulating mechanism that displacement bearing housing displacement drive mechanism constitutes this pump or motor of being assemblied in that are assemblied between housing endoporus and the rotor periphery; Promptly, displacement bearing housing inner hole sleeve contains each slide block, the periphery guiding groove matches with guide sleeve endoporus guide pad, constitute reciprocal radial alignment displacement structure, limit the different values of the reciprocal radial displacement of rotor slide block thus, promptly change its work discharge capacity, the shaft axis of this cover is moved to opposite side by a side of rotor rotational axis, changing its working solution immediately flows to, the guide pad that the ring cavity that constitutes between displacement bearing housing periphery and the guide sleeve endoporus is matched, the groove sealed separation is an equity, all the time office height under the working state, two semi-ring chambeies of low pressure different conditions, guiding groove is linked up with low hydraulic pressure semi-ring chamber all the time via matching gap with the cavity volume that forms between guide pad cooperates and is kept low hydraulic pressure, the balance fluid cylinder is the single-acting fluid cylinder, its piston effective pressure sectional area equals 1/2 of displacement bearing housing guiding groove basal area, be equipped with shuttle valve in the body of its liquid cylinder, integral installation is assigned in the prefabricated fitting seat oral area position of housing, the liquid-through hole that is communicated with housing and liquid cylinder and shuttle valve chamber via the guide sleeve both sides, be subjected to the shuttle valve core to lead control, all the time the pressure working solution is imported this fluid cylinder working barrel chamber, under the promotion of hydraulic coupling, the piston rod of this liquid cylinder piston passes housing, the pre-manufactured hole of guiding body, rod end contacts the bottom land of displacement bearing housing guiding groove all the time, keep balancing each other with the radially relative driving force of displacement bearing housing displacement drive mechanism, displacement drive mechanism and equilibrium liquid cylinder diameter are on the relative fitting seat mouth that is assemblied in the housing opposite side, divide according to architectural difference, this driving mechanism can be a screw mechanism, or drag link mechanism, or the manually servo or electrical servo or the servo fluid cylinder mechanism of surging, or pressure or flow automatic control mechanism.

4, a kind of hydraulic pressure installation as claimed in claim 1, the present invention is referred to as slide block type dish transmission fluid press pump or motor, it is characterized in that:

By endoporus is the sliding bearing working surface that connects, the peripheral, axial of the rotor subject member of the equipped groove of the slide block of the uniform perforation of outer circumferential face is assembled drive plate between two parties, slide block is assemblied in the interior formation of the slide block slot rotor part of drive plate both sides successively, support axle and pass rotor part, outer axial face and rotor subject member endoporus sliding bearing working surface are movingly, the equipped thrust plate that floats of the inner chamber medial extremity of two housings, endoporus is equipped with the eccentric shaft bearing sleeve, Assembly Sealing in the side direction annular groove of nose end, sealing rotor part by the drive plate both sides, is this dish transmission fluid press pump or motor of structure by clamping bolt with supporting that axle fixedlys connected; Within it in the bilge construction: in the axial plane that supports axle, the plane that constitutes with the shaft axis of its rigging position and eccentric shaft bearing sleeve eccentric direction line is the static pressure planar slot that is provided with in the two halves axial plane on boundary with parallel axes, and the endoporus preparation of this axle has matching hole and the positioning spline that matches with equipped axle head; The thrust plate that floats is made of disk body and flexible seals two-part, the positive card that cooperates with the rotor-side end face of disk body is that symmetrical boundary line is symmetrical arranged arc flow groove with eccentric shaft bearing sleeve eccentric direction line, the outer arc dia of groove equals rotor subject member external diameter and deducts a modulus, the outer shroud of the back of the body card of this disk body is provided with annular groove, the internal diameter of annular groove is consistent with the endoporus axle center and the diameter of eccentric shaft bearing sleeve, in annular groove with interior card, eccentric direction line with the eccentric shaft bearing sleeve serves as directly to the midline, outer arc is set and the annular groove inner ring surface joins, angle equals the fan groove of 1.05 to 1.2 times of the two groove angles of rotor subject member slide block slot, the same plane of bottom land and circular groove bottom, flexible seals material selection nitrile butadiene rubber, it is consistent to connect fan groove in plane shape and the disk body back of the body card annular groove, thickness is 1.15 to .25 times of groove depth, being assemblied in the combination seal of housing endoporus tip side in annular groove and being the side direction lip rotating disc seal ring of being made by nitrile butadiene rubber and seal ring two-part of being made by the teflon of graphite impregnation epoxy resin or filling graphite constitutes, assembly relation is that seal ring is interior, seal ring outside, seal ring is by axial compression 10% to 30%, under the effect of elastic force, keep the lip end of seal ring and the anchor ring of seal ring to fit tightly the realization sealing with the drive plate card simultaneously.

5, a kind of hydraulic pressure installation as claimed in claim 1, the present invention is referred to as slide block type hydraulic speed-changing driver, it is characterized in that:

By the coaxial assembling of the described constant displacement hydraulic motor of slide block type volume adjustable hydraulic pump and claim 2, via combination flow-distributing valve and hydraulic pipe line the active chamber group of working solution tank, time liquid filter, this pump and motor is even linked up to coordinating the hydraulic work loop of conducting, constituted universal slide block type hydraulic speed-changing driver; By slide block type volume adjustable hydraulic pump and the coaxial assembling of slide block type dish transmission constant displacement hydraulic motor, via combination flow-distributing valve and hydraulic pipe line the active chamber group of working solution tank, time liquid filter, this pump and motor is even linked up to coordinating the hydraulic work loop of conducting, formation dish driving block formula hydraulic speed-changing driver; Wherein combination flow-distributing valve structure and assembly structure are: in the body of volume adjustable hydraulic pump housing, be arranged in parallel two along the endoporus axial direction and to be used to assemble the perforation valve pocket of flow-distributing valve assembly, each is provided with liquid-through hole and the communication of housing inner chamber between two parties two valve pockets, two groups of structures are identical, by valve body, interior cone valve, interior pressure spring, slide valve buckle, outer cone valve, the external compression spring, the flow-distributing valve assembly that spacing snap ring and outer seat constitute assembled in sequence respectively connects in the valve pocket in two, before after two ends are assembled, rear end cover limits and promptly constitutes this valve, externally total feed liquor hydraulic fluid port of this valve and time liquid hydraulic fluid port, internally respectively with variable displacement pump and fixed displacement motor active chamber automatic control conducting, the feed liquor hydraulic fluid port of this valve joins by pipeline and working solution tank, returning the liquid hydraulic fluid port joins by pipeline and time liquid filter, filter is secured on the working solution tank, the in line fuel tank of filtered solution constitutes the complete hydraulic work system of a complete function; The assignment process of this valve is: setting two valve pockets and endovascular component is respectively A valve and B valve, what variable displacement pump and A valve were linked up is the imbibition active chamber, what link up with the B valve is the discharge opeing active chamber, then, working solution from fuel tank through the feed liquor pipeline, this valve feed liquor hydraulic fluid port, push the interior cone valve of A valve open, after entering the imbibition active chamber pressurization of pump, enter the B valve via the discharge opeing active chamber, the outer cone valve of pushing the B valve open enters the motor operations chamber promote motor operations after, enter the A valve again, promote its outer cone valve and drive the slide valve buckle expert, via the passage between slide valve buckle of opening and the outer seat, return the liquid hydraulic fluid port, the liquid return pipe road, return liquid filter, return fuel tank, constitute complete work cycle, when the suction of pump, the conversion of row's active chamber, the corresponding thereupon conversion of the operating state of two valves, the complete work cycle of formation working solution reverse flow.