CN1279366A - Hydraulic pump, motor and combined hydraulic device thereof - Google Patents

Abstract

A rotary positive-displacement hydraulic device is technically characterized by that its rotor has movable blocks and shaft slots to form a variable working cavity, which can be divided into movable-block variable, quantitative hydraulic pump and motor, hydraulic speed variator, speed reducer and speed increaser, etc. said hydraulic pump and motor have the functions of various positive-displacement hydraulic pumps and motors, and said hydraulic speed variator, speed reducer and speed increaser have the same functions of mechanical speed variator, speed reducer and speed increaser, and said hydraulic speed variator has stepless speed-changing characteristics.

Description

Oil hydraulic pump, motor and combined hydraulic apparatus thereof

The invention relates to a kind of rotary positive displacement hydraulic device.

At present, in hydraulic transmission, be by variable displacement pump or variable displacement motor, flow control valve etc. mostly, the hydraulic system of forming with metering pump, motor and other related accessories realizes the speed change transmission, realizes deceleration, speedup transmission by the setting combination of the metering pump of different displacements and motor and hydraulic system that other related accessories are formed.Said system causes corresponding energy loss by the situation of forming of its oil hydraulic circuit, and this system uses on the restricted equipment of installing space and also is restricted; (for example, the basic trnasmission of motor vehicle is with regard to less employing all-hydraulic transmission device.) in addition, the plunger pump of more use and motor exist structure complexity, the higher deficiency of cost in the system; Gear, vane pump and motor then exist working pressure and life-span deficiency on the low side.

Purpose of the present invention is exactly the deficiency that exists in above-mentioned hydraulic transmission and the system in order to overcome, provide a kind of simple in structure, volume is little, cost is low, easy to install, mechanical efficiency is higher relatively, the hydraulic pressure installation of applied range model.

To achieve these goals, the present invention adopts following overall technological scheme: will be formed the rotor and the organism component assembling that eccentric shaft bearing sleeve or selfaligning bearing cover is housed of variable-operation sap cavity by loose piece and axial trough, it is coaxial to dress perhaps two parts that are made of rotor and organism component assembling to be pressed from both sides the combination thrust plate; Constitute the close function of a kind of structure respectively other hydraulic pressure installation is arranged.Have metering pump and motor function by rotor and the device that the organism component assembling that the eccentric shaft bearing sleeve is housed constitutes, be called loose piece formula metering pump and motor; Have the function of variable displacement pump and motor by rotor and the device that the organism component assembling that the selfaligning bearing cover is housed constitutes, be called loose piece formula variable displacement pump and motor; Parts that constitute by rotor and the organism component assembling that the selfaligning bearing cover is housed, with parts that constitute by rotor and the organism component assembling that the eccentric shaft bearing sleeve is housed, the coaxial device that dress is constituted of folder combination thrust plate has the speed change transmission agency, is called loose piece formula hydraulic transformer; Have deceleration or speedup transmission agency with the coaxial device that dress is constituted of parts folder combination thrust plate that the organism component assembling that the eccentric shaft bearing sleeve is housed constitutes respectively by two different rotors of work discharge capacity, be called loose piece formula hydraulic retarder or speed increaser.

Rotor component in the overall technological scheme is made of axle, reel, loose piece, the ring that moves about.There is aperture axial trough next door to communicate in the outer axial face of axle respectively along the uniform axial rectangular through slot, the axial liquid-through hole of the corresponding uniform equivalent in axial trough next door in respective diameters place, each hole of having of all odd numbers with external diameter; The internal diameter of reel have the spline that accurately cooperates with the axle cell wall, a side corresponding to the keyway next door be respectively equipped with border seal contain liquid shallow slot, shallow slot at the bottom of the respective diameters place be provided with axial hydraulic balance through hole respectively, two reel shallow slots are opposing, be sleeved on the two ends of axle, the exterior edge face is concordant with the strictness of axle end face, leaves liquid chunnel between reel internal diameter and axle bottom land; Loose piece is made by the low resilient engineering plastics of friction of MC nylon or other high strength and other composite material, metallic material, or based on metallic material, inlay with other low friction elastic material, assembled, be shaped as many curved surfaces prism, the pressure-bearing surface of corresponding pressure liquid has pass-out opposite, static balance hole between two parties, contain respectively in each the axle groove that is contained between two reels, can radially slide and swing along cell wall, and remain the effective sealing that contacts periphery with axial trough, reel at the volley to serve as that axle is circumferential with the cell wall contact position; The ring that moves about has the effect of bearing enclose concurrently, and cover contains whole loose pieces, and for loose piece leaves the space of radially moving about in right amount, and with each loose piece contacting surface in formation static pressure sap cavity.

The loose piece formula metering pump in the overall technological scheme and the organism component of motor mainly are made of body, side panel, reel bearing, eccentric shaft bearing sleeve, thrust plate and end cap.The inner chamber of body is established keyway, and inner end is pressed close to endoporus place side channel, and flexible side seal seal ring is housed in the groove; Side panel external diameter band cooperate with the body keyway to key, one side is pressed close to the endoporus place and is established side channel, bottom land is established axial discharge orifice, flexible side seal seal ring is housed in the groove, the another side is established concentric inner arc groove and outer arc groove perpendicular to key along diameter symmetry, and bottom land is established several axial hydraulic equalizing orifices respectively, the side seal Sealing is housed in the groove, is mounted on the interior edge face of body; The reel bearing is become by fluoroplastic or other the high-strength low friction elastic material that filling strengthens, and internal diameter is established static pressure to oil pocket, and external diameter is crossed the static pressure oil pocket separated time that hangs down and established key, to the key tape spool to through hole, through hole porose respectively with to the oil pocket traffic; Eccentric shaft bearing sleeve external diameter band is to being equipped with the flat key of tape spool to through hole in keyway, the groove, flat key length and eccentric bushing width strict conformance, and internal diameter is equipped with hydrostatic bearing or composite bearing alloy, is provided with static pressure to oil pocket; The reel bearing housing is contained in the external diameter of reel, and the capacity eccentric bearing cover is sleeved on the external diameter of the ring that moves about, with the rotor constituent components body inner chamber of packing in the lump; Thrust plate is made up of disk body and external diameter seal ring, one side of disk body is provided with inner arc groove identical with side panel and outer arc groove, same Sealing is housed, the inner arc bottom land is established the arc assignment hole, hole outer arc wall is established radial hole, two sections grooves of disk body external diameter system, and an end of groove is crossed a radial hole, the other end is crossed the offside arc and is joined the hole perpendicular bisector, and the outer arc bottom land is established the hydro-cushion hole; The external diameter seal ring is made with flexible sealing material, and external band is to key, and the key body is established axial hole, porose and the internal diameter traffic in middle part, hole, be set in the external diameter of disk body, be loaded on the body inner chamber and be affixed on the assembly end face, be combined to form by the passage of an assignment hole to reel bearing offside static pressure oil pocket feed flow; End cap is established suction, liquid port, and two mouthfuls are equipped with the discharge one-way valve that is communicated with inner chamber respectively, corresponding thrust plate outer arc groove, and lid is established valve pocket, and the differential piston reduction valve is housed, and corresponding thrust plate inner arc groove is established the hole and is communicated with the liquid intake end of valve.

The loose piece formula variable displacement pump in the overall technological scheme and the organism component of motor constitute and the difference of loose piece formula metering pump and motor is that the relevant position that has been replaced eccentric shaft bearing sleeve and body by the selfaligning bearing cover is provided with the variable controller mount inlet.The selfaligning bearing cover is formed the setting sleeve band by setting sleeve and adjustment cover

Inside and outside to keyway, establish radial direction through hole at the bottom of the interior spline between two parties, the hole collar extension is neglected flat, and the flat key of tape spool to through hole, length and setting sleeve width strict conformance is housed in the outside keyway; The external diameter band of adjusting cover is radially to feather key, a screw is established on the key top between two parties, internal diameter is equipped with hydrostatic bearing or composite bearing alloy, is provided with static pressure to oil pocket, cooperate with keyway through key and to be loaded on the setting sleeve inner chamber, can after the assembling, guide rod be housed between two parties along an amount of radial slippage of keyway to the key end face, guide rod can dock with the actuator of variable controller by the variable controller mount inlet of setting sleeve keyway bottom outlet, body.

Combination thrust plate in the overall technological scheme is made of disk body, outer ring, valve bar, jump ring.Disk body is pressed close to the endoporus place, and side channel is established in bi-side, adorns flexible side seal seal ring in the groove; Establish the arc assignment hole of being with jump ring groove and step along diameter symmetry, hole inner arc wall is along the liquid-through hole that is laid with the tiltedly logical respectively bi-side of two row side channel week, and two assignment hole outer arc walls respectively are provided with a radially liquid-through hole; External diameter is established two sections grooves, and an end of groove is crossed a radial hole, and the other end is crossed offside assignment hole perpendicular bisector, holes to respective depth in bottom land along perpendicular bisector, and boring communicates with a side again; Make with rubber or other flexible material the outer ring, and external diameter is established key, and key is established axial hole, and the porose and internal diameter traffic in through hole middle part is sleeved on the disk body external diameter, is combined to form by the passage of assignment hole while to both sides reel bearing offside static pressure oil pocket feed flow; The valve bar is made with fluoroplastic or other flexible material of filling, shape matches with disk body arc assignment hole, be listed as radially liquid-through hole along being provided with one week, be contained in the disk body assignment hole, there is jump ring to limit, can do in right amount endwisely slipping along hole inner arc wall, open simultaneously hole inner arc wall the tiltedly logical liquid-through hole of two row, cut off the assignment hole put-through channel, or close liquid-through hole, open the assignment hole put-through channel.

The essential structure of the loose piece formula hydraulic transformer in the overall technological scheme is, parts and parts of forming by rotor and the organism component that the eccentric shaft bearing sleeve is housed of forming by rotor and the organism component that the selfaligning bearing cover is housed, clamping combination thrust plate is coaxial as a whole to adorning, the inboard, end of two parts bodies is pressed close to the endoporus place and is established side channel, flexible side seal seal ring is housed in the groove, and the groove outer wall makes side channel communicate with the body external diameter along several radial holes of Zhou Junbu; Corresponding side panel outer arc groove place establishes valve pocket, the differential piston reduction valve is housed in the chamber, corresponding side panel inner arc groove place establishes the hole and is communicated with the reduction valve liquid feeding end, the outer body that body extracorporeal set behind the dress is had variable-speed controller mount inlet and heat-dissipating fin, form a closed ring cavity volume of excusing interior body two ends radial hole between outer body and interior body, the plate-like filtrate net of band rigid backbone is housed in the chamber, working solution is housed, the filtrate net is divided into working solution and filters and two-part to be filtered, by ring-shaped chamber, the body inner duct of the correlated parts of two parts and combination thrust plate constitutes the work cycle loop of working solution.

The loose piece formula hydraulic retarder in the overall technological scheme or the essential structure of speed increaser are, with two different rotors of work discharge capacity respectively and the parts that the organism component of eccentric shaft bearing sleeve is formed are housed, folder combination thrust plate is coaxial to dress, extracorporeal set is only with the outer body of heat-dissipating fin, have groove, hole, valve, the ring-shaped chamber identical, constitute identical working solution work cycle loop with the hydraulic transformer mode of structure.Power intake working rotor discharge capacity is a retarder less than this device of clutch end working rotor discharge capacity, otherwise is speed increaser.

Advantage of the present invention and good effect are:

For loose piece formula oil hydraulic pump and motor, compare with at present general oil hydraulic pump and motor, have working pressure, power, structural advantage that speed range is big; Compare with plunger pump and motor, have advantages such as simple in structure, that volume is little, cost is low; Compare with gear, vane pump and motor, have advantages such as working pressure height, mechanical life be long.

For loose piece formula hydraulic speed-changing, deceleration, speed increaser, compare with the deceleration speed increaser with mechanical transmission, have simple in structure, volume is little, easy and simple to handle, advantages such as noise is low, continuously variable; Compare with the hydraulic speed-changing of forming by pump, motor, valve and related accessories, deceleration, speedup transmission system, have simple in structure, compact, easy for installation, cost is low, applied range, advantage such as energy-conservation.

Can predict that in sum enforcement exploitation of the present invention will provide a kind of effective way for the improvement of the machine power kind of drive and transmission device at present.For example, utilize hydraulic transformer of the present invention to replace the mechanical transmission that generally adopts at present, the motor vehicle of packing into can be realized automatic stepless speed change truly, and this improvement to vehicle driving performances such as automobiles has suitable reality and far reaching significance.

Below in conjunction with accompanying drawing, essence of the present invention and feature are done further detailed, concrete description by embodiment.

Fig. 1 is one can directly be installed on the loose piece formula metering pump of motor, internal-combustion engine output terminal and motor embodiment's vertical profile tectonic maps, Fig. 2 is that this embodiment is by the cross-sectional tectonic maps of position shown in Figure 1 ladder, Fig. 3, Fig. 4 are by position shown in Figure 2 sectional view, and Fig. 5 is by position shown in Figure 1 sectional elevation; Fig. 6 is the cross-sectional tectonic maps of a loose piece formula variable displacement pump and motor; Fig. 7 is a vertical profile tectonic maps that can directly be installed on the loose piece formula hydraulic transformer embodiment of power source output terminal, and Fig. 8, Fig. 9, Figure 10, Figure 11, Figure 12 are the sectional view of this embodiment by position shown in Figure 7; Figure 13, Figure 14, Figure 15 are the insight structural maps of combination thrust plate; Figure 16 is a big speed ratio loose piece formula hydraulic retarder embodiment's a vertical profile tectonic maps.

Mark sequence number by each figure: 1, body; 2, side panel; 3, axle; 4, loose piece; 5, ring moves about; 6, the eccentric shaft bearing sleeve; 7, reel; 8, the reel bearing; 9, flexible external diameter seal ring; 10, the flow disk body; 11, end cap; 12, the outer arc slot seal; 13, the inner arc slot seal; 14, differential piston formula reduction valve; 15, one-way valve; 16, flat key with holes; 17, adjust cover; 18, setting sleeve; 19, the modification body; 20, guide rod; 21, the combination seal cover; 22, the pump housing; 24, combination flow disk body; 25, the outer ring; 26, the motor body; 27, the filtrate net; 28, outer body; 29, differential piston reduction valve (2); 30, the valve bar; 31, jump ring; 32, outer body (2); BLK, variable controller; BSK, variable-speed controller.

The loose piece formula metering pump as shown in Figure 1 and the profile of motor are cylindrical body, the internal structure structure is as Fig. 1, Fig. 2, Fig. 3, Fig. 4, shown in Figure 5: the end of body 1, peripheral hardware and power source are to the flange plate of dress, and the inboard is pressed close to the endoporus place and established side channel, adorns flexible side seal seal ring in the groove, the inner chamber cylinder is established keyway, side panel 2 external diameter bands are to key, and a side is pressed close to the endoporus place and established side channel, adorn flexible side seal seal ring in the groove, the uniform axial discharge orifice of bottom land, the another side is symmetrical arranged perpendicular to concentric inner arc groove and outer arc groove to key place diameter, and bottom land is established several axial hydraulic equalizing orifices respectively, and Sealing 13 is housed respectively in the groove, 12, be mounted on 1 inner chamber end; Axle 3 is established wounded in the battle key endoporus, the uniform odd number rectangle of periphery axial pass trough, press close to the endoporus place corresponding to the next door of groove along the Zhou Junbu axial liquid-through hole identical with the number of groove, there is the next door of aperture groove to communicate with external diameter at the middle part in hole, in groove, contain dress loose piece 4 respectively, it can be an amount of circumferentially swing of axle along the cell wall radial slippage and with the contact position, 4 are made by the low flexible engineering plastics of friction of MC nylon or other high strength and other composite material, perhaps the part made from metal and other material is inlayed, assembled, be shaped as many curved surfaces prism, there is pass-out opposite, hydro-cushion hole at the pressure-bearing surface middle part, the ring 5 that moves about is held concurrently and is born the function of bearing enclose, cover contains whole loose pieces, and leave in right amount along the groove space of radially moving about for loose piece, encircle outer suit capacity eccentric bearing cover 6, the vertical eccentric direction of 6 external diameter is established keyway, length and the wide strict conformance of cover are housed in the groove, tape spool is to the flat key 16 of through hole, internal diameter is equipped with static-pressure sliding bearing or composite bearing alloy, be symmetrical in eccentric direction and static pressure be set oil pocket, the inner radius that is symmetrical in eccentric direction in thin-walled one side is provided with two logical liquid breach, communicate respectively with two static pressure oil pockets, the internal diameter of reel 7 is provided with the spline that accurately cooperates with axle groove next door, the interval of the corresponding spline in one side, be respectively equipped with the closed oil-containing shallow slot of periphery, the area summation of groove is close with the outer arc groove area, bottom land has axial hole to communicate with the another side, through hole place diameter is corresponding with the logical liquid breach of eccentric shaft bearing sleeve, external diameter suit reel bearing 8,8 fluoroplastic or the low friction resilient material of other high strength that strengthened by filling are made, external diameter establish tape spool to through hole to key, endoporus is vertical and key place diameter is established static pressure to oil pocket, in the chamber porose with to the traffic of key through hole, be sleeved on the external diameter of reel, with reel clamping loose piece, the capacity eccentric bearing cover be sleeved on axle two ends (two reels to contain the liquid shallow slot opposing, leave liquid chunnel between dish internal diameter and bottom land), be installed in the inner chamber of body as an assembly, fit in the side panel card, flow disk body 10 1 sides are provided with inner arc groove identical with side panel and outer arc groove, the inner arc bottom land is established the arc assignment hole, two hole outer arc walls are respectively established a radial hole, two sections grooves of external diameter system, one end of groove is crossed a radial hole, the other end is crossed offside arc assignment hole perpendicular bisector, the outer arc bottom land is established several axial hydraulic equalizing orifices, dish external diameter suit band is outer (establishes axial hole to key to the gentle living seal ring 9 of key, porose and the internal diameter traffic in middle part, hole), be combined to form by the passage of an assignment hole to reel bearing offside static pressure oil pocket feed flow, in, outer arc groove sealed packaging spare 13, the 12 body inner chambers of packing in the lump, fit in the assembly end face, again by end cap 11 and body encapsulation, 11 establish suction, liquid port, two mouthfuls are equipped with the discharge one-way valve 15 that communicates with inner chamber respectively, corresponding thrust plate outer arc groove place is shaped on valve pocket, differential piston reduction valve 14 is housed in the chamber, corresponding inner arc groove is established the hole, connects with the reduction valve liquid feeding end.

The working principle of this pump and motor is: when the rotary driving of the passive power of axle source, loose piece in its groove is rotation thereupon also, and under action of centrifugal force, be fitted in the inner hole wall of the ring that moves about, move about ring with the effect of loose piece friction under also thereupon in the accurate rotation synchronously of eccentric shaft bearing sleeve endoporus, because the biasing of its axle center and axle axle center makes the cavity volume cycle variation thereupon of each loose piece and axial trough formation, the half cycle that increases at its volume sucks working solution from the assignment hole of thrust plate, be the imbibition interval, the half cycle that reduces at its volume extrudes the working solution in the chamber through assignment hole, for between drainage region, each groove, the continuous sequentially-operating of piece is promptly finished the operation of pump liquid, realizes pumping function; When the pressure working solution is pressed into cavity volume through assignment hole, pressure liquid is by being subjected to the loose piece of the eccentric ring restriction of moving about that is provided with, so that axle forms moment of torsion, drive spindle rotates to axial trough, and the cycle changes the sap cavity volume thereupon, the half cycle that increases is pressed into working solution through assignment hole, for driving the interval, the half cycle that reduces releases working solution through assignment hole, for returning between the liquid zone, continuous supply pressure liquid then drive spindle rotates continuously, realizes motor function.

Need annotatedly be, by its structure as can be seen, first, this pump and motor adopt confession hydrostatic pressure sliding bearing structure, the pressure liquid of (referring to Fig. 2) reel bearing static pressure oil pocket is to be injected through liquid-through hole radially, outer diameter groove, bearing support external key through hole by thrust plate offside assignment hole that (two reel bearing static pressure oil pockets are communicated with respectively by the flat key through hole in the eccentric shaft bearing sleeve keyway, the offside oil pocket is communicated with this side assignment hole through external key through hole, thrust plate outer diameter groove, radial hole, and fluid pressure is a normal pressure.), determine appropriate reel bearing static pressure oil pocket area parameters according to the bearing area of loose piece, can realize the hydraulic radial balance, reel is turned round under the approximate state that suspends, surface friction drag reduces greatly, although bearing adopts nonmetallic material such as fluoroplastic, and working life that still can satisfaction guaranted.The pressure liquid of eccentric shaft bearing sleeve static pressure oil pocket is by the oblique through hole of assignment hole, end cap of thrust plate, through the reduction valve decompression, after outer arc bottom land hydro-cushion hole, injects through the logical liquid breach of eccentric shaft bearing sleeve, (referring to Fig. 3, Fig. 5) determines appropriate Pressure reducing ratio, static pressure oil pocket area parameters according to the loose piece bearing area, and the ring of can realizing moving about turns round under the approximate state that suspends; In oily rotating ring inner hole wall and loose piece contacting surface, form the area static pressure oil pocket suitable,, realize the hydraulic radial balance of loose piece by loose piece hydro-cushion hole voltage supply with the loose piece bearing area; In addition, side panel, thrust plate and swivel assembly end face cooperates the mode that also adopts the axial hydraulic balance that two dishes are floated to fit in the assembly end face, both realized effective sealing, reduce resistance and component wear again.Second, this pump and motor comprise loose piece, adopted nonmetal morely, the without cutting part, simplifying technology, reduce cost, energy-conservation, when running noise obviously reduced, working life was also guaranteed, with the loose piece of casting with MC nylon is example, although it is with the axle high speed rotating, and the relative displacement speed between contact component minimum (general ring can surpass 1m/s), and can utilize the self-sealed compensated wearing and tearing of its elastic pressure, in addition, what it bore is simple pressure stress substantially, even also can not surpass the working pressure scope that allows under the pressure of 40MPa, therefore, the simple cost of established technology is low, service behaviour that again can satisfaction guaranted.

The structure of loose piece formula variable displacement pump and motor is (referring to Fig. 1 to Fig. 5) as shown in Figure 6, adopt and quantitative loose piece pump and the identical mode of structure of motor, structural differences with it is, first, body adopts the structure of modification body 19, two coaxial screws of crossing diameter are established at the middle part that is the body barrel, and a nose end is established the variable controller fitting seat, dress seal combination swivel nut 21 in the hole, second, what move about ring external diameter suit is that by adjusting the selfaligning bearing cover that cover 17 and setting sleeve 18 are formed, the setting sleeve external diameter is established keyway, the dress tape spool is to the flat key of through hole in the groove, inner diameter vertical in outside keyway established in to keyway, bottom land is established the hole between two parties, outer end of hole is neglected flat; Adjusting the cover external diameter establishes feather key, the installation screw of guide rod 20 is established (after the main body assembling finishes between two parties in key top, by body the screw of seal combination swivel nut is housed with 20, be installed on this hole), internal diameter (hydrostatic bearing can be installed) composite bearing alloy, be symmetrical in key is established static pressure to oil pocket, oil pocket is porose to communicate respectively with external diameter, after the assembling, adjust cover can along in the setting sleeve to the keyway radial slippage, the 3rd, liquid-through hole place diameter was corresponding with the ring cavity of adjusting the formation of cover external diameter with the setting sleeve endoporus at the bottom of reel contained the liquid shallow slot, and the remaining parts structure is identical with quantitative loose piece pump and motor with package assembly.

The working principle of this pump and motor is, when the actuator of variable controller BLK is docked with guide rod, kind according to controller, by sound, light, electricity, liquid, gas, motor-driven, adjustment cover that manual mode of operation actuator push-and-pull guide rod affects the selfaligning bearing cover, change its desaxe amount, and then the amplitude of variation of the sap cavity volume of loose piece in the change running and the formation of axle groove, the output discharge capacity then changed as pump, then change output speed as motor, promptly realize its variable displacement pump and motor function.

Need annotatedly to be, the pressure liquid of adjusting cover static pressure oil pocket is to be entered setting sleeve, adjust the semi-ring chamber of inner room by the reel liquid-through hole through the reduction valve decompression by the assignment hole of thrust plate, and the radial direction through hole through adjusting jacket wall injects again; Keyway is left an amount of gap with adjusting cover to the cooperation place of feather key in the setting sleeve, make the key top with at the bottom of the keyway between the cavity volume that forms be communicated with the semi-ring chamber that has pressure liquid; Adjust the Pressure reducing ratio, loose piece bearing area of area, the reduction valve of cover static pressure oil pocket, to key height and thickness, must determine an appropriate parameters combination, so that hydraulic coupling and the extrapolability of loose piece, the radial force of adjustment jacket wall of power that key is born and couple, static pressure oil pocket tend to balance as far as possible.

The structure of loose piece formula hydraulic transformer such as Fig. 7 are to shown in Figure 12, inner chamber at the pump housing 22 is equipped with and variable displacement pump and motor structure and identical in structure member, inner chamber at motor body 26 is equipped with and metering pump and motor structure and identical in structure member, clamping is coaxial as a whole to adorning by the combination thrust plate that disk body 24 parts such as grade are assembled, extracorporeal set has heat-dissipating fin, be provided with the outer body 28 of rotational speed governor BSK fitting seat corresponding to guide rod 20 installation positions, outer body and endosome form the ring-shaped chamber of a sealing, fill working solution in the chamber, clamp the plate-like filtrate net that has rigid backbone, the filtrate net is divided into to be filtered and own filtration two-part with working solution.Duct by correlated parts in ring-shaped chamber, interior body and the body constitutes closed working solution work cycle loop.

The pump housing 22 with the main structure difference of modification body 19 is, the radially liquid-through hole that connects along near inner side slot Zhou Junbu several and the endoporus in the end of the pump housing, this liquid-through hole is excused in the ring-shaped chamber of sealing, inner chamber end corresponding side panel outer arc groove is established valve pocket, and reduction valve (2) 29 is housed in the chamber, and corresponding side panel inner arc groove is established the hole, communicate with the reduction valve liquid feeding end, motor body 26 is that the end is furnished with the liquid-through hole identical with the pump housing, and reduction valve is housed equally with the main structure difference of body 1.

The structure of combination thrust plate is to be assembled by disk body 24, outer ring 25, valve bar 30, jump ring 31 and flexible side seal seal ring shown in Figure 13,14,15.Disk body is pressed close to bi-side, endoporus place and is established side channel, flexible side seal seal ring is housed in the groove, be provided with the arc assignment hole of band step and jump ring groove along diameter symmetry, the inner arc wall in hole is along the liquid-through hole that is laid with the tiltedly logical side of two row side channel week, the outer arc wall of two assignment holes respectively is provided with a radially liquid-through hole, the dish external diameter is established two sections grooves, one end of groove is crossed a radial hole, the other end is crossed offside assignment hole perpendicular bisector, hereinto the vertical line place through the bottom land radial bore to the motor body the reel bearing to the degree of depth of key axial hole place diameter, bore axial bore and motor body one side again and connect, make with rubber or other flexible material the outer ring, and external diameter is established key, key is established axial hole, porose and the internal diameter traffic in through hole middle part is sleeved on the disk body external diameter, is combined to form by the passage of assignment hole while to both sides reel bearing offside static pressure oil pocket feed flow; The valve bar is made with fluoroplastic or other high strength elastic material of filling, shape matches with disk body arc assignment hole, be listed as radially liquid-through hole along being provided with one week, be contained in the disk body assignment hole, limit by jump ring, endwisely slip but can do in right amount along hole inner arc wall, open simultaneously assignment hole inner arc wall the tiltedly logical liquid-through hole of two row, cut off the assignment hole put-through channel, or close liquid-through hole simultaneously, open the assignment hole put-through channel.

The working principle of this speed changer is, when the axle in the pump housing is rotated, with working solution from the radially liquid-through hole of ring-shaped chamber through pump housing end, cross the side panel liquid-through hole, the axial liquid-through hole of axle, the oblique liquid-through hole of combination flow disk body, the arc assignment hole sucks pressurization, send into the motor body through another assignment hole of combination thrust plate and drive its axle rotation, working solution is thereupon through combination thrust plate arc assignment hole, oblique liquid-through hole, cross the axial liquid-through hole of motor body inner axis of heart, the side panel liquid-through hole, motor end of body radially liquid-through hole flows back to ring-shaped chamber, make working solution constitute a complete work cycle loop, change the discharge capacity and the throughput direction of pump housing internal pressure liquid by the operation rotational speed governor, promptly cause the change of motor body inner axis of heart rotating speed and sense of rotation, and then realized the speed change of this speed changer, the driver function of break-in outputting rotary power.(pressure liquid discharge capacity is directly proportional with respect to axle desaxe amount with the axle center that the selfaligning bearing cover is adjusted circle, throughput direction is relevant with the offset direction, carried by an assignment hole if be offset from top, axle axle center pressure liquid, pressure liquid is just carried by another assignment hole when then being offset from the below.)

Assignment process for the combination thrust plate, now be illustrated separately, when pump housing inner axis of heart rotates, valve bar between combination thrust plate and suction area in the corresponding assignment hole is inhaled into the liquid suction and is affixed on the jump ring end face, the outer arc wall of outer arced surface and assignment hole is fitted, the direct access that cuts off this assignment hole, open the oblique liquid-through hole of two row of assignment hole inner arc wall synchronously, the interior relevant work cavity volume of pump and motor body is communicated with ring-shaped chamber by relevant duct by the disk body both sides through the oblique liquid-through hole of two row respectively, working solution sucks from the oblique liquid-through hole of the pump housing one side, oblique liquid-through hole by motor body one side is discharged, simultaneously, be affixed on hole inner arc shoulder with the valve bar in the assignment hole corresponding between discharge zone by pressure hydraulic pressure, the outer arc wall in outer arced surface and hole breaks away from, open the assignment hole direct access, the oblique liquid-through hole of two row of sealing synchronously, pressure liquid directly is pressed into motor body running cavity volume by pump housing work cavity volume, realized the continuous circulation of working solution, and, no matter the throughput direction of two axle rotation directions and pressure liquid how, thrust plate can appropriately be communicated with working solution work loop, in addition, the radial hole of disk body, outer diameter groove, the outer ring constitutes by the passage of assignment hole while to both sides reel bearing offside static pressure oil pocket feed flow the key through hole.

The essential structure of loose piece formula hydraulic retarder is, the parts clamping combination thrust plate that two different identical with the motor body one side structure of hydraulic transformer respectively organism components of rotor of work discharge capacity are formed is coaxial to dress, the outer body 32 of extracorporeal set, form the ring-shaped chamber of sealing, clamp plate-like filtrate net in the chamber, fill working solution, just constitute a hydraulic retarder or speed increaser, the join work discharge capacity of rotor of axle and power source is a retarder less than the work discharge capacity of another rotor, otherwise is speed increaser.Figure 16 is speed reducer with high transmission ratio embodiment's the vertical profile tectonic maps that power sources such as motor directly can be installed its input end, an end of outer body 32 establish with power source to the dress flange, the installation footing is established in the bottom.

The work characteristics of this retarder or speed increaser is, is subjected to the input end rotor of drive power source rotation to make working solution produce hydraulic pressure, the rotation of drive output rotor, and the work discharge capacity of its velocity ratio and two rotors is inversely proportional to; The eccentric direction of the eccentric shaft bearing sleeve in sense of rotation and two organism components is relevant, and then two rotor rotation directions are identical on the contrary for eccentric direction, otherwise then opposite.

The foregoing description is enough to embody novelty of the present invention, exploitativeness and excellent development application prospect, therefore, wishes to authorize corresponding patent right.

Claims (7)

1, a kind of hydraulic pressure installation that is made of rotor and organism component assembling is characterized in that rotor is made of axle, reel, loose piece, the ring that moves about, and loose piece wherein and axle outer axial face groove constitute the variable-operation cavity volume; Organism component is mainly selected to constitute by body, side panel, reel bearing, eccentric shaft bearing sleeve or selfaligning bearing cover, thrust plate or parts such as combination thrust plate end cap or outer body; Rotor and structure have other organism component combination, constitute the close function of a kind of structure respectively other hydraulic pressure installation is arranged: by rotor with the eccentric shaft bearing sleeve is housed, one end adds the organism component assembling of end cap, constitutes loose piece formula metering pump and motor with metering pump and motor function; By rotor with the selfaligning bearing cover is housed, an end adds the organism component assembling of end cap, constitutes loose piece formula variable displacement pump and motor with variable displacement pump and motor function; Parts that constitute by rotor and the organism component assembling that the selfaligning bearing cover is housed, with parts that constitute by rotor and the organism component assembling that the eccentric shaft bearing sleeve is housed, clamp the combination thrust plate, the outer body of suit constitutes the loose piece formula hydraulic transformer with speed change transmission agency; Assemble the parts that constitute with the organism component that the eccentric shaft bearing sleeve is housed respectively by two different rotors of work discharge capacity, clamp the combination thrust plate, the outer body of suit constitutes loose piece formula hydraulic retarder or the speed increaser with deceleration or speedup transmission agency.

2, a kind of hydraulic pressure installation as claimed in claim 1, it is characterized in that having aperture axial trough next door to communicate respectively along the uniform axial rectangular through slot, the axial liquid-through hole of the corresponding uniform equivalent in axial trough next door in respective diameters place, each hole of having of all odd numbers with external diameter in the axle outer axial face of rotor; The internal diameter of reel have the spline that accurately cooperates with the axle cell wall, a side corresponding to the keyway next door be respectively equipped with border seal contain liquid shallow slot, shallow slot at the bottom of the respective diameters place be provided with axial hydraulic balance through hole respectively, two reel shallow slots are opposing, be sleeved on the two ends of axle, the exterior edge face is concordant with the strictness of axle end face, leaves liquid chunnel between reel internal diameter and axle bottom land; Loose piece hangs down the resilient engineering plastics of friction by MC nylon or other high strength and other composite material is made, or based on metallic material, inlay with other low friction elastic material, assembled, be shaped as many curved surfaces prism, the pressure-bearing surface of corresponding pressure liquid has pass-out opposite, static balance hole between two parties, contain respectively in each the axle groove that is contained between two reels, can radially slide along cell wall, and with the cell wall contact position serve as circumferentially swing of axle, and remain at the volley and contact peripheral effective sealing with axial trough, reel; The ring that moves about has the effect of bearing enclose concurrently, and cover contains whole loose pieces, for loose piece leaves the space of radially moving about in right amount, and with each loose piece contacting surface in form the static pressure sap cavity.

3, a kind of hydraulic pressure installation as claimed in claim 1 is characterized in that, its organism component mainly is made of body, side panel, reel bearing, eccentric shaft bearing sleeve, thrust plate and end cap; The inner chamber of body is established keyway, and inner end is pressed close to the endoporus place and established side channel, and flexible side seal seal ring is housed in the groove; Side panel external diameter band cooperate with the body keyway to key, one side is pressed close to the endoporus place and is established side channel, bottom land is established several axial discharge orifices, flexible side seal seal ring is housed in the groove, the another side is perpendicular to the key diameter symmetry being established concentric inner arc groove and outer arc groove, bottom land is established several axial hydraulic equalizing orifices respectively, and the side seal Sealing is housed in the groove, is mounted on the interior edge face of body; The reel bearing is made by fluoroplastic or other high-strength low friction elastic material that filling strengthens, and internal diameter is established static pressure to oil pocket, and external diameter is crossed the static pressure oil pocket separated time that hangs down and established key, to the key tape spool to through hole, through hole porose respectively with to the oil pocket traffic; Excentric sleeve external diameter band is to being equipped with the flat key of tape spool to through hole in keyway, the groove, flat key length and eccentric bushing width strict conformance, and static-pressure sliding bearing is housed internal diameter or the composite bearing alloy is provided with static pressure to oil pocket, and oil pocket is had logical liquid breach pass-out side respectively; The reel bearing housing is contained in the external diameter of reel, and the capacity eccentric bearing cover is sleeved on the external diameter of the ring that moves about, with the rotor constituent components body inner chamber of packing in the lump; Thrust plate is made up of disk body and external diameter seal ring, one side of disk body is provided with inner arc groove identical with side panel and outer arc groove, same Sealing is housed, the inner arc bottom land is established the arc assignment hole, two assignment hole outer arc walls are respectively established a radial hole pass-out external diameter, two sections grooves of disk body external diameter system, and an end of groove is crossed a radial hole, the other end is crossed offside arc assignment hole perpendicular bisector, and the outer arc bottom land is established the hydro-cushion hole; The external diameter seal ring is made with flexible sealing material, and external band is to key, and the key body is established axial hole, hole middle part porose with the internal diameter traffic, be set in the external diameter of disk body, be combined to form by the passage of an assignment hole to reel bearing offside static pressure oil pocket feed flow, be loaded on the body inner chamber, be affixed on the assembly end face; End cap is established suction, liquid port, two mouthfuls of branches are equipped with the discharge one-way valve that is communicated with inner chamber in addition, corresponding thrust plate outer arc groove, lid is established valve pocket, the differential piston reduction valve is housed in the chamber, and corresponding thrust plate inner arc groove, lid are established the hole and are communicated with the liquid intake end of reduction valve, end cap is loaded on the body end, and body inner chamber and chamber inner member are sealed.

4, a kind of hydraulic pressure installation as claimed in claim 1 is characterized in that, the body corresponding site in its organism component is provided with the variable controller mount inlet, replaced the eccentric shaft bearing sleeve by the selfaligning bearing cover in the chamber, remaining parts is identical with the described organism component of structure and claim 3; The selfaligning bearing cover is made up of setting sleeve and adjustment cover, setting sleeve is provided with inside and outside to keyway (orthogonal to the keyway line), establish radial direction through hole at the bottom of the interior spline between two parties, the hole collar extension is neglected flat, and the flat key of tape spool to through hole, length and setting sleeve width strict conformance is housed in the outside keyway; The external diameter band of adjusting cover is radially to feather key, a screw is established on the key top between two parties, internal diameter is equipped with hydrostatic bearing or composite bearing alloy, is provided with static pressure to oil pocket, establish the hole in the chamber and communicate, cooperate with keyway through key to be loaded on the setting sleeve inner chamber with external diameter, can be along an amount of radial slippage of keyway, after the assembling, guide rod is installed at screw place, key top, and guide rod can dock with variable controller actuator by the variable controller mount inlet of setting sleeve keyway bottom outlet, body.

5, a kind of hydraulic pressure installation as claimed in claim 1 is characterized in that, clamps the combination thrust plate in its organism component; The combination thrust plate is made of disk body, outer ring, valve bar, jump ring; Disk body is pressed close to the endoporus place, and side channel is established in bi-side, adorns flexible side seal seal ring in the groove; Establish the arc assignment hole of band jump ring groove and step along diameter symmetry, hole inner arc wall divides the liquid-through hole that tiltedly leads to the bi-side side channel in addition along being laid with two row week, two assignment hole outer arc walls respectively are provided with a radially liquid-through hole, external diameter is established two sections grooves, one end of groove is crossed a radial hole, the other end is crossed offside assignment hole perpendicular bisector, holes to respective depth in bottom land along perpendicular bisector, and boring communicates with a side again; Make with rubber or other flexible material the outer ring, and external diameter is established key, and key is established axial hole, and the porose and internal diameter traffic in through hole middle part is sleeved on the disk body external diameter, is combined to form by the passage of assignment hole while to both sides reel bearing offside static pressure oil pocket feed flow; The valve bar is made with the fluoroplastic or the low friction of other high strength elastic material of filling, shape matches with disk body arc assignment hole, be listed as radially liquid-through hole along being provided with one week, be contained in the disk body assignment hole, limit by jump ring, can do in right amount endwisely slipping along hole inner arc wall, open simultaneously assignment hole inner arc wall the tiltedly logical liquid-through hole of two row, cut off the assignment hole put-through channel, or close liquid-through hole, open the assignment hole put-through channel.

6, a kind of hydraulic pressure installation as claimed in claim 1, it is characterized in that, parts of forming by rotor and the organism component that the selfaligning bearing cover is housed, with parts of forming by rotor and the organism component that the eccentric shaft bearing sleeve is housed, clamping combination thrust plate is coaxial as a whole to adorning, the interior edge face of two parts bodies is pressed close to the endoporus place and is established side channel, flexible side seal seal ring is housed in the groove, the groove outer wall is along several radial holes of Zhou Junbu, side channel is communicated with the body external diameter, corresponding side panel outer arc groove place establishes valve pocket, the differential piston reduction valve is housed in the chamber, corresponding side panel inner arc groove place establishes the hole and is communicated with the reduction valve liquid feeding end, the outer body that body extracorporeal set behind the dress is had variable-speed controller mount inlet and heat-dissipating fin, form a ring-shaped chamber of excusing the sealing of interior body two ends radial hole between outer body and interior body, the plate-like filtrate net of band rigid backbone is housed in the chamber, working solution is housed, the filtrate net is divided into working solution and filters and two-part to be filtered, by ring-shaped chamber, the body inner duct of the correlated parts of two parts and combination thrust plate constitutes closed working solution work cycle loop.

7, a kind of hydraulic pressure installation as claimed in claim 1, it is characterized in that, two different rotors of work discharge capacity respectively and the parts that the organism component of eccentric shaft bearing sleeve is formed are housed, folder combination thrust plate is coaxial as a whole to adorning, extracorporeal set has groove, hole, valve, the ring-shaped chamber structure identical with the described hydraulic device structure mode of claim 6 only with the outer body of heat-dissipating fin, constitutes identical working solution work cycle loop.

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