CN102606378A - Full water lubrication pass shaft type water hydraulic piston motor - Google Patents

Full water lubrication pass shaft type water hydraulic piston motor Download PDF

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Publication number
CN102606378A
CN102606378A CN201210076764XA CN201210076764A CN102606378A CN 102606378 A CN102606378 A CN 102606378A CN 201210076764X A CN201210076764X A CN 201210076764XA CN 201210076764 A CN201210076764 A CN 201210076764A CN 102606378 A CN102606378 A CN 102606378A
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piston
plunger
cap
piston shoes
water
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CN102606378B (en
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聂松林
杨立洁
张安庆
尹方龙
喻国哲
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Beijing University of Technology
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Beijing University of Technology
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Abstract

The invention provides a full water lubrication pass shaft type water hydraulic piston motor and belongs to the field of fluid machinery. A cylinder body shaft is provided with an odd number of large holes and small holes parallel to an axis, and pistons in a piston shoe component are respectively arranged in the large holes so as to form piston pairs; one end of the cylinder body shaft is provided with a float disc, one ends, uniformly arranged in the cylinder body shaft, of central springs are used for pressing the float disc on a fluid distribution disc, and the other ends of the central springs are used for pressing an ejector rod on a central spherical hinge assembled on the cylinder shaft; and a retainer plate sheathed outside the central spherical hinge is used for pressing the piston shoes in each piston component on the inclined surface of an inclined disc through the bottom of the piston shoes, one end of a float sleeve is installed into a cylinder hole corresponding to the cylinder body shaft, and the other end of the float sleeve is installed into the hole corresponding to the float disc. The full water lubrication pass shaft type water hydraulic piston motor adopts the cylinder body shaft, so that the side play of a spline or a flat key is prevented from causing the fluid distribution disc to flee circumferentially, and the contact part between a transmission key and the shaft is avoided from high stress corrosion; and all the odd number of pistons adopt return springs for centralization return, so that fatigue breakdown merely exists, and the motor is beneficial to working in sea water for a long time.

Description

The shaft type water hydraulic piston motor of fully water lubricating
Affiliated technical field
The present invention relates to energy conversion device, executive component oil hydraulic motor in the water hydraulic transmission, belong to field of fluid machinery.
Background technique
Along with social progress and scientific technological advance, energy saving and resource, ecological friendly green manufacture technology have become the primary goal of modern mechanical engineering.The water hydraulic drive technology uses the natural water (containing seawater and fresh water) after filtering to realize transmission of power as hydraulicdriven working medium; Do not contain any additives; Unique advantage with wide material sources, environmental friendliness, clean and safe; And water itself also has advantages such as flame retarding; Can satisfy people to greatest extent for the craving for of aspects such as safety, energy economy & environment protection, meet the needs of human kind sustainable development, become one of current international fluid transmission and control field the latest development direction.Application of novel material in addition, the progress of precision processing technology and the hydraulic element of new structure are succeeded in developing, and make the water hydraulic drive technology obtain significant progress.Developed country comprises that the U.S., Britain, Germany, Finland, Denmark, Japan etc. begin development from the late 1970s or the beginning of the eighties, gets into the practical popularization stage at present, extensively uses in fields such as ocean development, nuclear power industry, mining industries.China begins to carry out the research work of water hydraulic drive technology aspect from early 1990s, but development speed is slow relatively, and still amorphous products is invested market at present, and the R&D work of all kinds of water hydraulic elements still is in the starting stage.
Water hydraulic motor (pump) is the key element in the water hydraulic system, and its performance index have directly determined the performance index of whole water hydraulic system.Up to the present, the sea that has developed, fresh water oil hydraulic motor (pump) structure have following characteristics:
Except that U.S.'s earliest is that underwater operation tool was developed the sliding-vane motor, other nearly all seas, fresh water motor (pump) all adopt plunger-type structure.
The transmission shaft of clino-axis type axial piston structure is cantilever structure and bears bigger axial force, thereby bearing has been proposed more harsh requirement.Rolling bearing (oil or grease lubrication) can meet the demands when adopting ceramic bearing or adopting oil, water separation structure, but as far as adopting the piston motor (pump) of water as lubricant medium, sliding bearing is difficult to the huge load that competent clino-axis type structure produces.Thereby water pressure plunger motor (pump) has adopted inclined disc type structure mostly.
In order to improve the anticorrosive wearing and tearing ability of friction pair, improve the contamination resistance of sea water hydraulic motor, the friction pair of nearly all sea, fresh water oil hydraulic motor (pump) has all adopted materials such as engineering ceramics, engineering plastics and corrosion resisting alloy widely.
The external existing valve flow of axial piston hydraulic pamp pattern also has the valve plate distribution pattern, and valve distributing construction good airproof performance is used for doing the flow-distribution mechanism of ultrahigh pressure water pump more.The water hydraulic motor then generally adopts port plate structure, and working speed is generally 1400-1800r/min.
Abroad, (patent No.: 6000316) announced a kind of axial piston pump, this pump is an oblique disk structure before the fully water lubricating semiaxis formula to U. S. Patent, and cylinder body is close to thrust plate through inserting dish, and suction capacity is restricted.Present at home temporary unformed commercialization pure water hydraulics motor (pump).Chinese patent (patent No.: ZL03118632.7) announced a kind of axial piston water hydraulic pump, this pump adopts fully water lubricating valve distributing construction, and main shaft drives swash plate and rotates, and the cylinder body transfixion, structure is comparatively complicated, and difficulty of processing is bigger.Chinese patent (application number: 200310108538.6) announced a kind of pure water hydraulics axial plunger pump/motor of fully water lubricating; Adopt valve plate distribution, lean on swash plate and central spring to realize the plunger to-and-fro motion, driving/output shaft and cylinder body are the unsteady end face distributing constructions that interference fit adopts the thrust button that floats; Compact structure; Specific power is big, and difficulty of processing is bigger, but actual effect is not appeared in the newspapers yet.
Summary of the invention
The technical problem that the present invention will solve provides a kind of shaft type water hydraulic piston motor of fully water lubricating of valve plate distribution, and it utilizes filters the natural water in back (containing fresh water and seawater) as working medium, no longer needs any other oiling agent.
For addressing the above problem, the shaft type water hydraulic piston motor of fully water lubricating of the present invention comprises: big end cap is connected through screw thread and housing, and little end cap is affixed through screw with big end cap, and big end cap, housing and small end lid constitute shell; The bulb of plunger is inserted in the semicircular ball-and-socket of piston shoes, and boots shoulder pad sheet is embedded on the piston shoes, and the piston shoes base pressure is gone in the piston shoes endoporus, interference fit, by at the bottom of piston shoes, the piston shoes, boots shoulder pad sheet, plunger constituted plunger piston slippery boots assembly.
Adopt the shaft type structure, Boring mill inserts in the endoporus of housing, respectively by front slide bearing that is positioned at housing and the back sliding supported condition that is positioned at big end cap; Have the macropore and the aperture of odd number and parallel axes on the Boring mill, the plunger in the plunger piston slippery boots assembly places respectively and constitutes trunk piston set in the macropore; Boring mill one end is equipped with floating disc; An end that is distributed in the odd number of center spring in the Boring mill aperture is pressed in floating disc on the thrust plate; It is secondary that floating disc and thrust plate constitute flow; The central spring the other end is pressed in push rod on the center ball pivot that is assemblied on the Boring mill, be placed in the outer backhaul dish of center ball pivot with the piston shoes in each plunger piston slippery boots assembly via the piston shoes base pressure on the swash plate inclined-plane, it is secondary to constitute piston shoes; One end of floating bushing is packed in the corresponding cylinder of the Boring mill hole, and the other end of floating bushing is packed in the corresponding hole of floating disc, and floating disc is unsteady with respect to Boring mill; At big end cap center positioning ring is housed, positioning ring and locating stud are fixed on thrust plate on the big end cap, and positioning ring is fixed on swash plate on the housing, all has the water guide groove on housing, Boring mill, the swash plate.
Be provided with the plunger center hole in the plunger, in bulb, be provided with the plunger ball center hole, in piston shoes, have the piston shoes center hole, communicate successively with the surface of contact of swash plate at the bottom of plunger center hole, plunger ball center hole, piston shoes center hole, piston shoes bottom outlet and the piston shoes.
On big end cap, be respectively equipped with water inlet and osculum, have suction gain and draining gain in the thrust plate.High pressure water flows into the suction gain of the thrust plate that communicates with it during suction from the water inlet of big end cap, flows into the floating disc that is communicated with it again, the intercommunicating pore of floating bushing gets in the cylinder bore; During draining with the low-pressure water in the cylinder bore via the draining gain on the floating bushing that is communicated with it, floating disc, the thrust plate, discharge from the osculum of big end cap.
Big end cap is connected through damping hole with housing, through damping hole in housing, introduces high pressure water forward sliding bearing hydrostatic support is provided, and the interior pressure release of leakage hole realization housing through housing.
The beneficial effect that the present invention has is:
1. Boring mill is that transmission shaft and cylinder body are machined directly to a part, avoids spline or flat key sideshake to cause the circumferential play of thrust plate, also can avoid driving key simultaneously and be coupling touching the heavily stressed corrosion at position.
2. this oil hydraulic motor has the odd number plunger, and all plungers all adopt retracting spring to concentrate backhaul.There is fatigue ruption hardly in this retracting spring, helps in the medium-term and long-term work of seawater.
3. the floating disc of cylinder body end face floats through the floating bushing in the cylinder hole, is pressed on the thrust plate through retracting spring.Adopt the distributing construction that floats to carry out flow, the gap of thrust plate is little, can guarantee the contact seal on flow surface, and can avoid the eccentric wear burning dish between cylinder body and the thrust plate to lose efficacy.
4. many spring assemblies of adopt disperseing of retracting spring, when thrust plate with float when having cross-examined wedge-shaped crevice, each spring unevenly can produce correction moment because of compressing, it is tight that thrust plate and floating disc are fitted.
5. main friction pairs adopts static balance method or residual clamping force method to design, and with PV (specific contact pressure) value that reduces the water lubrication friction pair, improves mechanical efficiency, prolongs motor life.
6. most of friction pairs all adopt the friction disk or the friction sleeve structure of inlaying high-abrasive material, alleviating wearing and tearing, and life-saving, and create conditions for the replacing of easily damaged parts.
7. adopt the shaft type structure, simple in structure, number of spare parts is few, and reliability is better, and is close to plunger-type structure with the fluid last item, is convenient to piston motor specialized factory and produces in batches rapidly.
8. whole parts of motor all can be immersed in the water, can compensate water depth pressure automatically when working under water, have avoided the energy consumption that causes because of water depth pressure.
Description of drawings
Do further explain below in conjunction with the accompanying drawing specific embodiments of the invention.
Fig. 1 is a structural representation of the present invention;
Fig. 2 is a structural representation left view of the present invention;
Fig. 3 is a port plate structure schematic representation of the present invention;
Fig. 4 is the enlarged view of plunger piston slippery boots assembly of the present invention.
Among the figure: 1 key; 2 Boring mills; 3 envelopes; 4 little end caps; 5 screws; 6 big end caps; 6.1 big end cap water inlet; 6.2 big end cap osculum; 7,8,9 O RunddichtringOs; 10 locating studs; 11 thrust plates; 11.1 draining gain; 11.2 suction gain; 12 central spring; 13 push rods; 14 center ball pivots; 15 backhaul dishes; 16 housings; 16.1 damping hole; 17 valve nozzles; 18 plastic spacers; 19 front slide bearings; 20 positioning rings; 21 swash plates; 22 screws; 23 platens; 24 plunger piston slippery boots assemblies; 24.1 at the bottom of the piston shoes; 24.11 piston shoes bottom outlet; 24.2 piston shoes; 24.21 piston shoes center hole; 24.3 boots shoulder pad sheet, 24.4 plungers; 24.41 plunger ball center hole; 24.42 plunger center hole 25 floating bushings; The 26O RunddichtringO; 27 Sealing shield rings; 28 floating discs; 29 positioning rings; 30 back sliding bearings.
Embodiment
Implement the shaft type water hydraulic piston motor that Fig. 1~4 combine to have provided a kind of fully water lubricating, its mainly by shell (mainly constituting) by big end cap 6, small end lid 4, housing 16, be installed on rotatable Boring mill 2 in the housing 16, swash plate 21, plunger piston slippery boots assembly 24 and the flow distribution apparatus (comprising thrust plate 11, floating disc 28, floating bushing 25) that are fixed in the housing 16 form.
Big end cap 6 is connected through screw thread and housing 16, and small end lid 4 is affixed through screw 5 with big end cap 6, and big end cap 6, housing 16 constitute shell with small end lid 4.
Adopt the shaft type structure; Housing 16 endoporus are equipped with plastic spacer 18; Boring mill 2 inserts in housing 16 endoporus and directly contacts with plastic spacer 18; Plastic spacer 18 can effectively reduce Boring mill 2 when rotating with housing 16 between wearing and tearing and vibration, platen 23 is fixed through screw 22 and Boring mill 2 left end cylinder bodies, thus assurance plunger 24.4 does not shift out in the cylinder hole.
The front and back neck of Boring mill 2 is rotatedly connected with front slide bearing that is positioned at housing 16 19 and the back sliding bearing 30 that is positioned at big end cap 6 respectively; The odd number macropore and the aperture of even distribution and Boring mill 2 parallel axes on the Boring mill 2 same circumference; The plunger 24.4 of plunger piston slippery boots assembly places in Boring mill 2 macropores, is inlaid with reinforced plastic in the macropore, and it constitutes trunk piston set with the plunger 24.4 that stainless steel material is processed; Plunger 24.4 bulb project to outsource plastics constitute the ball-and-socket pair with piston shoes 24.2 ball-and-sockets; Boring mill 2 the right are floating discs 28; Place the right-hand member of the central spring 12 of the odd number aperture that is uniformly distributed with on the Boring mill 2 that floating disc 28 is pressed on the thrust plate 11; Floating disc 28 constitutes the flow pair with thrust plate 11; Central spring 12 left ends 24.1 are pressed on piston shoes in each plunger piston slippery boots assembly 24 24.2 on the swash plate 21 at the bottom of via piston shoes through the center ball pivot 14 outside Boring mill 2, the Boring mill 2, backhaul dish 15 outside the center ball pivot 14 through push rod 13; It is secondary to constitute piston shoes, and the ball-and-socket face constitutes the center typed ball bearing pair in center ball pivot 14 outer spherical surfaces and the backhaul dish 15.
The valve plate distribution mode of adopt floating, the left end of floating bushing 25 are packed in the macropore of corresponding Boring mill 2, and the right-hand member of floating bushing 25 is packed in the floating disc 28 corresponding holes, and interference fit makes floating disc 28 float with respect to Boring mill 2 and with Boring mill 2 rotations.There are O shape rubber seal 26 and O shape Sealing shield ring 27 to seal in the flow cover 25, guarantee that high pressure water do not reveal from the radial clearance of flow cover 25, and compensation processing and alignment error, can guarantee the contact seal on flow surface.
At big end cap 6 centers positioning ring 29 is housed, positioning ring 29 is fixed on thrust plate 11 on the big end cap 6 with locating stud 10.Positioning ring 20 is fixed on swash plate 21 on the housing 16.Swash plate 21, Boring mill 2 all has the water guide groove on the housing 16, and through the leakage hole drainage pressure release on the housing 16.
Boring mill 2 axle heads seal through axle envelope 3; Big end cap 6 is fixed through screw 5 and little end cap; And rely on O-ring seals 7 and big end cap 6 to seal; Seal through O-ring seals 9 between big end cap 6 and the Boring mill 2, seal through O-ring seals 8 between big end cap 6 and the housing damping hole 16.1.
Working procedure of the present invention is:
Central spring 12 is applied to active force on the center ball pivot 14 via depression bar 13, and will on average be applied on each plunger piston slippery boots assembly 24 through backhaul dish 15, is close to all the time on swash plate 21 inclined-planes and slides to guarantee at the bottom of the piston shoes 24.1.The suction gain 11.2 that high pressure water flows on the thrust plate 11 that is communicated with it through the water inlet on the big end cap 6 of motor 6.1; Flow into the floating disc 28 that is communicated with it again, the intercommunicating pore of floating bushing 25 gets in the macropore of Boring mill 2, makes the plunger 24.4 that is arranged in the plunger piston slippery boots assembly 24 of water one side into overhanging under the effect of high pressure water.Swash plate 21 is given the reaction force of plunger piston slippery boots assembly perpendicular to swash plate 21 inclined-planes, and the hydraulic coupling of the horizontal component of this reaction force and plunger assembly 24 substantially horizontals balances each other, the moment of torsion that the vertical stress component of this reaction force produces to Boring mill 2 plunger piston slippery boots assembly 24.Be positioned at plunger piston slippery boots assembly 24 compelled the contracting of motor backwater one side, the water in the cylinder bore via the intercommunicating pore of floating bushing 25 and floating disc 28, the draining gain 11.1 on the thrust plate 11, is discharged from the osculum 6.2 of the big end cap 6 of motor.The plunger piston slippery boots assembly 24 of draining one side is stressed stressed identical with water inlet one lateral column plug slippery boots assembly 24; But because the pressure of water inlet and outlet is different; The moment of torsion to Boring mill 2 that produces is different, so under the effect of 24 pairs of Boring mill 2 resultant moment of force of plunger piston slippery boots assembly, Boring mill 2 drive plunger piston slippery boots assemblies 24, floating bushing 25, floating disc 28 rotate; Outwards export torque and rotating speed, thereby realize plunger 24.4 constantly to-and-fro motion in the cylinder hole.
Used friction pair of the present invention all directly adopts water lubrication and cooling, comprises cylinder hole and plunger, plunger ball and piston shoes ball-and-socket, and at the bottom of the piston shoes and swash plate, floating disc and thrust plate, Boring mill and front and back sliding bearing, ball pivot and backhaul dish etc.Concrete implementation procedure is:
Between the macropore of Boring mill 2 and the plunger 24.4 certain clearance is arranged, lean on this gap to realize sealing.In water absorption course; Be high pressure water in the cylinder hole, form the height pressure difference, make that the high pressure water in the cylinder hole leaks in the housing 16 through seal clearance in cylinder hole and plunger 24.4 seal clearance two ends; This part is revealed the pressure of water in the gap and is reduced successively; Suitable bearing capacity is arranged, for cylinder hole and plunger 24.4, the effect of played supporting, lubricating, cooling off.
High pressure water in the cylinder hole is also through plunger center hole 24.42, and plunger ball center hole 24.41, piston shoes center hole 24.21 arrive between plunger ball and the piston shoes ball-and-socket lubricate; Through 24.11 arriving at the bottom of the piston shoes 24.1 and constitute friction pairs at the bottom of the piston shoes center hole 24.21, piston shoes, form hydrostatic support, and play effect lubricated, cooling again with swash plate 21.
The aperture that the water inlet 6.1 of high pressure water through big end cap 6 is connected with housing 16 enters into the inner damping hole 16.1 of housing 16; And through between housing 16 built-in valve nozzles 17 introducing front slide bearings 19 and the housing 16; Front slide bearing 19 is formed hydrostatic support, also played effect lubricated, cooling.In addition, all have many water guide grooves between front slide bearing 19 and the Boring mill 2, the water in the housing 16 is introduced wherein, friction pair is played effect lubricated and cooling.
The main friction pairs of this device all adopts stainless steel material and engineering plastics, and this coupling has the characteristic of corrosion-resistant, wear-resistant and selflubricating, can effectively guarantee under the water lubrication condition, to obtain enough reliability and working life.Concrete condition is following:
Bearing pair has two: front slide bearing 19 and Boring mill 2, and back sliding bearing 30 all adopts engineering plastics with 2, two bearings of Boring mill, and Boring mill 2 adopts stainless steel material.Typed ball bearing pair is center ball pivot 14 and backhaul dish 15; Wherein center ball pivot 14 is stainless steel materials, and backhaul dish 15 comprises two-part, and first portion is the matrix of stainless steel material; Second portion is the ball-and-socket that in matrix, injects engineering plastics, and it cooperates the formation typed ball bearing pair with center ball pivot 14.Boring mill 2 also comprises two-part, and first portion is the matrix of stainless steel material, and second portion is the engineering plastics of injection moulding in the cylinder hole of cylinder body matrix, and the plunger 24.4 of it and stainless steel material is formed trunk piston set.24.4 fens two-part of plunger, a part is the matrix of stainless steel material, and second portion is the engineering plastics of plunger ball injection moulding, and it is secondary that it and piston shoes 24.2 ball-and-sockets constitute ball-and-socket.24.1 is engineering plastics at the bottom of the piston shoes, secondary with the swash plate 21 formation piston shoes of stainless steel material.
In a word; The used main friction pairs pairing material of the present invention is stainless steel material and engineering plastics; Corrosion resistance, intensity, toughness and the rigidity of component in the pure water hydraulics axial motor have promptly been guaranteed; Guaranteed tribological properties such as the selflubricating of each friction pair, wear-resistant, vibration damping again, can avoid effectively at a high speed, adhesive wear, corrosive wear and the phenomenon such as stuck of friction pair under the situation of heavy duty, water lubrication, effectively improved functional reliability and working life.
At last, it is also to be noted that what more than enumerate only is several specific embodiments of the present invention.Obviously, the invention is not restricted to above enforcement, many distortion can also be arranged.Protection scope of the present invention is all thought in all distortion that those skilled in the art can directly derive or associate from content disclosed by the invention.

Claims (6)

1. the shaft type water hydraulic piston motor of a fully water lubricating is characterized in that it comprises: big end cap (6) is connected through screw thread and housing (16), and little end cap (4) is affixed with big end cap (6), big end cap (6), housing (16) and little end cap (4) formation shell; The bulb of plunger (24.4) is inserted in the semicircular ball-and-socket of piston shoes (24.2); Boots shoulder pad sheet (24.3) is embedded on the piston shoes (24.2); (24.1) are pressed in piston shoes (24.2) endoporus at the bottom of the piston shoes; Interference fit has constituted plunger piston slippery boots assembly (24) by (24.1), boots shoulder pad sheet (24.3), plunger (24.4) at the bottom of piston shoes (24.2), the piston shoes;
Adopt the shaft type structure; Boring mill (2) is that transmission shaft and cylinder body are machined directly to a part; Boring mill (2) inserts in the endoporus of housing (16), is supported by front slide bearing (19) that is positioned at housing (16) and the back sliding bearing (30) that is positioned at big end cap (6) respectively; Have the macropore and the aperture of odd number and parallel axes on the Boring mill (2), the plunger (24.4) in the plunger piston slippery boots assembly (24) places respectively and constitutes trunk piston set in the macropore; Boring mill (2) one ends are equipped with floating disc (28); An end that is distributed in the odd number of center spring (12) in Boring mill (2) aperture is pressed in floating disc (28) on the thrust plate (11); It is secondary that floating disc (28) and thrust plate (11) constitute flow; Central spring (12) the other end is pressed in push rod (13) on the center ball pivot (14) that is assemblied on the Boring mill; Be placed in the outer backhaul dish (15) of center ball pivot (14) piston shoes (24.2) in each plunger piston slippery boots assembly (24) are pressed on swash plate (21) inclined-plane via (24.1) at the bottom of the piston shoes, it is secondary to constitute piston shoes; One end of floating bushing (25) is packed in the corresponding cylinder hole of Boring mill (2), and the other end of floating bushing (25) is packed in the corresponding hole of floating disc (28), and floating disc (28) is unsteady with respect to Boring mill (2); At big end cap (6) center positioning ring (29) is housed; Positioning ring (29) and locating stud (10) are fixed on thrust plate (11) on the big end cap (6); Positioning ring (20) is fixed on swash plate (21) on the housing (16), and housing (16), Boring mill (2), swash plate all have the water guide groove on (21);
Be provided with plunger center hole (24.42) in the plunger (24.4); In bulb, be provided with plunger ball center hole (24.41); In piston shoes (24.2), have piston shoes center hole (24.21), (24.1) communicate with the surface of contact of swash plate (21) successively at the bottom of plunger center hole (24.42), plunger ball center hole (24.41), piston shoes center hole (24.21), piston shoes bottom outlet (24.11) and the piston shoes;
On big end cap (6), be respectively equipped with water inlet (6.1) and osculum (6.2), have suction gain (11.2) and draining gain (11.1) in the thrust plate (11); High pressure water flows into the suction gain (11.2) of the thrust plate (11) that communicates with it during suction from the water inlet (6.1) of big end cap (6), flows into the floating disc (28) that is communicated with it again, the intercommunicating pore of floating bushing (25) gets in the cylinder bore; During draining with the low-pressure water in the cylinder bore via the draining gain (11.1) on the floating bushing (25) that is communicated with it, floating disc (28), the thrust plate (11), discharge from the osculum (6.2) of big end cap (6);
Big end cap (6) is connected through damping hole (16.1) with housing (16), through damping hole (16.1) to housing (16) in, introduce high pressure water forward sliding bearing (19) hydrostatic support is provided, and pass through the interior pressure release of leakage hole realization housing (16) of housing (16).
2. require the shaft type water hydraulic piston motor of said a kind of fully water lubricating according to right 1, it is characterized in that: embedding and injection molding engineering plastics in the cylinder hole of Boring mill (2), built-in stainless steel material plunger (24.4).
3. require the shaft type water hydraulic piston motor of said a kind of fully water lubricating according to right 1, it is characterized in that: Boring mill (2) is fixed in the axis hole on the shell through back sliding bearing (30) and front slide bearing (19).
4. require the shaft type water hydraulic piston motor of said a kind of fully water lubricating according to right 1; It is characterized in that: described piston shoes (24.2) are processed by metallic material; (24.1) are processed by engineering plastics at the bottom of the said piston shoes, and described boots shoulder pad sheet (24.3) is processed by engineering plastics.
5. require the shaft type water hydraulic piston motor of said a kind of fully water lubricating according to right 1, it is characterized in that: swash plate (21) inclination angle is 15~20 degree.
6. require the shaft type water hydraulic piston motor of said a kind of fully water lubricating according to right 1, it is characterized in that: all have the water guide groove that is used for lubricated and cooling action between front slide bearing (19), swash plate (21) and the Boring mill (2).
CN201210076764.XA 2012-03-21 2012-03-21 Full water lubrication pass shaft type water hydraulic piston motor Active CN102606378B (en)

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CN103266984A (en) * 2013-05-04 2013-08-28 北京工业大学 Plunger assembly structure of water hydraulic plunger motor and assembly method thereof
CN103410655A (en) * 2013-08-18 2013-11-27 北京工业大学 Flow distribution pair clearance magnetic force compensation-type water hydraulic motor
CN103742380A (en) * 2014-01-02 2014-04-23 北京工业大学 Seawater piston motor low in pulsation
CN105298780A (en) * 2014-07-24 2016-02-03 赵武敏 Multi-piston runner fluid pump apparatus
CN105649968A (en) * 2016-02-24 2016-06-08 湖北仁创科技有限公司 Water hydraulic axial plunger pump with pressure limiting overflow device and unloading device
CN103742380B (en) * 2014-01-02 2016-11-30 北京工业大学 A kind of sea water piston motor of low pulse
CN106246489A (en) * 2016-08-29 2016-12-21 山东天瑞重工有限公司 Desalinization high-pressure hydraulic pump
CN107489672A (en) * 2017-09-21 2017-12-19 北京工业大学 Spin power transmission formula low speed high torque hydraulic motor
CN110725783A (en) * 2019-11-06 2020-01-24 四川航天烽火伺服控制技术有限公司 Plunger pump and plunger piston shoe assembly thereof

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CN1542295A (en) * 2003-11-06 2004-11-03 浙江大学 Pure water hydraulic axial plunger pump / motor by total water lubrication
CN101949374A (en) * 2010-09-03 2011-01-19 北京工业大学 Swash plate type valve distributing high-pressure pure water plunger pump
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