CN102606378B - Full water lubrication pass shaft type water hydraulic piston motor - Google Patents
Full water lubrication pass shaft type water hydraulic piston motor Download PDFInfo
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- CN102606378B CN102606378B CN201210076764.XA CN201210076764A CN102606378B CN 102606378 B CN102606378 B CN 102606378B CN 201210076764 A CN201210076764 A CN 201210076764A CN 102606378 B CN102606378 B CN 102606378B
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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
Affiliated technical field
The present invention relates to energy conversion device, executive component oil hydraulic motor in 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 Present Mechanical Engineering.Water hydraulic drive technology uses the Natural Water (containing seawater and fresh water) after filtering to realize transmission of power as hydraulicdriven working medium; not containing any additive; there is the unique advantage of wide material sources, environmental friendliness, clean and safe; and water itself also has the advantages such as flame retarding; can meet to greatest extent people's craving for for aspects such as safety, energy economy & environment protections; meet the needs of human kind sustainable development, become one of current international Fluid-transmission and control field the latest development direction.In addition the application of new material, the progress of precision processing technology and the hydraulic element of new structure are succeeded in developing, and make water hydraulic drive technology obtain significant progress.Developed country comprises that the U.S., Britain, Germany, Finland, Denmark, Japan etc. start development from late 1970s or the beginning of the eighties, now enters the practical popularization stage, extensively in field application such as ocean development, nuclear power industry, mining industries.China starts to carry out the research work of water hydraulic drive technology aspect from early 1990s, but development speed is relatively slow, there is no at present approved product and invests market, and the R&D work of all kinds of water hydraulic elements is still in the starting stage.
Water hydraulic motor (pump) is the key element in water hydraulic system, and its performance index have directly determined the performance index of whole water hydraulic system.Up to the present the sea, fresh water oil hydraulic motor (pump) structure that, have developed have following characteristics:
Except U.S.'s earliest period is that underwater operation tool was developed 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 larger axial force, thereby bearing has been proposed to more harsh requirement.To adopt ceramic bearing or adopt oil, rolling bearing (oil or grease lubrication) can meet the demands when water separation structure, but for adopting the piston motor (pump) of water as lubricant medium, sliding bearing is difficult to the huge load of competent clino-axis type structure generation.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 the 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 valve plate distribution pattern, the multiplex flow-distribution mechanism that makees ultrahigh pressure water pump of valve distributing construction good airproof performance.Water hydraulic motor generally adopts port plate structure, and working speed is generally 1400-1800r/min.
Abroad, and U. S. Patent (patent No.: 6000316) announced a kind of axial piston pump, this pump is oblique disk structure before fully water lubricating semi-shaft type, cylinder body is close to thrust plate by inserting dish, and suction capacity is restricted.Current temporary unformed commercialization pure water hydraulics motor (pump) at home.Chinese patent (patent No.: ZL03118632.7) has been announced a kind of axial plunger type water hydraulic pump, and this pump adopts fully water lubricating valve distributing construction, and main shaft drives swash plate to rotate, and cylinder body transfixion, structure is comparatively complicated, and difficulty of processing is larger.Chinese patent (application number: the pure water hydraulic axial plunger pump/motor of 200310108538.6) having announced a kind of fully water lubricating, adopt valve plate distribution, realize plunger to-and-fro motion by swash plate and central spring, 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 large, and difficulty of processing is larger, but actual effect also has no report.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of shaft type water hydraulic piston motor of fully water lubricating of valve plate distribution, and after it utilizes filtration, Natural Water (containing fresh water and seawater), as working medium, no longer needs to have 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: large end cap is connected by screw thread and housing, and small end cover is affixed by screw with large end cap, and large end cap, housing and small end cover form shell; The bulb of plunger is inserted in the semicircular ball-and-socket of piston shoes, and boots shoulder pad sheet is embedded on piston shoes, and piston shoes base pressure enters in piston shoes endoporus, interference fit, by the bottom of piston shoes, piston shoes, boots shoulder pad sheet, plunger formed plunger piston slippery boots assembly.
Adopt shaft type structure, Boring mill inserts in the endoporus of housing, respectively by the front slide bearing and the rear sliding supported condition that is positioned at large end cap that are positioned at housing; On Boring mill, have the odd number macropore parallel with axis and aperture, the plunger in plunger piston slippery boots assembly is placed in respectively formation trunk piston set in macropore; Floating disc is equipped with in Boring mill one end, the one end that is distributed in the odd number of center spring in Boring mill aperture is pressed in floating disc on thrust plate, floating disc and thrust plate form Port Plate Pair, the central spring the other end is pressed in push rod to be assemblied on the ball pivot of Boring mill Shang center, be placed on return plate outside the ball pivot of center by the piston shoes in each plunger piston slippery boots assembly via piston shoes base pressure on swash plate inclined-plane, form piston shoes pair; One end of floating bushing packs in the corresponding cylinder of Boring mill hole, and the other end of floating bushing packs in the corresponding hole of floating disc, and floating disc is unsteady with respect to Boring mill; At large end cap center, positioning ring is housed, positioning ring and locating stud are fixed on thrust plate on large end cap, and positioning ring is fixed on swash plate on housing, all has water guide groove on housing, Boring mill, swash plate.
In plunger, be provided with plunger center hole, in bulb, be provided with plunger ball center hole, in piston shoes, have piston shoes center hole, at the bottom of plunger center hole, plunger ball center hole, piston shoes center hole, piston shoes bottom outlet and piston shoes, communicate successively with the surface of contact of swash plate.
On large end cap, be respectively equipped with water inlet and osculum, in thrust plate, have water suction gain and draining gain.When water suction, high pressure water flows into the water suction gain of the thrust plate communicating with it from the water inlet of large end cap, then flows into the floating disc, the intercommunicating pore of floating bushing that are communicated with it and enter in cylinder bore; When draining by the low-pressure water in cylinder bore via the draining gain on the floating bushing, floating disc, thrust plate that are communicated with it, discharge from the osculum of large end cap.
Large end cap and housing are connected by damping hole, by damping hole to introduce in housing high pressure water forward sliding bearing hydrostatic support is provided, and realize the pressure release in housing by the leakage hole of 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 the heavily stressed corrosion of driving key and axle contact position simultaneously.
2. this oil hydraulic motor has odd number plunger, and all plungers all adopt retracting spring to concentrate backhaul.There is fatigue ruption in this retracting spring, is conducive to work for a long time in seawater hardly.
3. the floating disc of cylinder body end face floats by the floating bushing in cylinder hole, is pressed on thrust plate by retracting spring.Adopt the distributing construction that floats to carry out flow, the gap of thrust plate is little, can guarantee the contact sealing on flow surface, and can avoid the eccentric wear burning dish between cylinder body and thrust plate to lose efficacy.
4. retracting spring adopts the many spring assemblies that disperse, when thrust plate with float while having cross-examined wedge-shaped crevice, each spring unevenly can produce correction moment because compressing, and makes thrust plate tight with floating disc laminating.
5. main friction pairs adopts the method to equate static pressure or residual clamping force method to design, and to reduce PV (specific contact pressure) value of water lubrication friction pair, improves mechanical efficiency, extends motor life.
6. most of friction pairs all adopt friction disk or the friction sleeve structure of inlaying high-abrasive material, to alleviate wearing and tearing, and life-saving, and create conditions for the replacing of easily damaged parts.
7. adopt shaft type structure, simple in structure, number of spare parts is few, and reliability is better, close with oily hydraulic axial plunger-type structure, is convenient to piston motor specialized factory and produces in batches rapidly.
8. whole parts of motor all can be immersed in water, can auto-compensation water depth pressure while work under water, avoid the energy consumption causing because of water depth pressure.
Brief description of the drawings
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Fig. 1 is structural representation of the present invention;
Fig. 2 is structural representation left view of the present invention;
Fig. 3 is port plate structure schematic diagram of the present invention;
Fig. 4 is the enlarged view of plunger piston slippery boots assembly of the present invention.
In figure: 1 key; 2 Boring mills; 3 shaft seals; 4 small end covers; 5 screws; 6 large end caps; 6.1 large end cap water inlets; 6.2 large end cap osculums; 7,8,9 O RunddichtringOs; 10 locating studs; 11 thrust plates; 11.1 draining gain; 11.2 water suction gain; 12 central spring; 13 push rods; 14 center ball pivots; 15 return plates; 16 housings; 16.1 damping holes; 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 piston shoes; 24.11 piston shoes bottom outlet; 24.2 piston shoes; 24.21 piston shoes center hole; 24.3 boots shoulder pad sheets, 24.4 plungers; 24.41 plunger ball center hole; 24.42 plunger center hole 25 floating bushings; 26O RunddichtringO; 27 Sealing shield rings; 28 floating discs; 29 positioning rings; 30 rear sliding bearings.
Embodiment
Implement Fig. 1～4 in conjunction with having provided a kind of shaft type water hydraulic piston motor of fully water lubricating, its mainly by shell (mainly being formed by large end cap 6, small end cover 4, housing 16), be installed on the interior rotatable Boring mill 2 of 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 housing 16 form.
Large end cap 6 is connected by screw thread and housing 16, and small end cover 4 is affixed by screw 5 with large end cap 6, and large end cap 6, housing 16 form shell with small end cover 4.
Adopt 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, wearing and tearing and vibration when plastic spacer 18 can effectively reduce Boring mill 2 and rotates and between housing 16, platen 23 is fixed by screw 22 and Boring mill 2 left end cylinder bodies, thereby ensures that plunger 24.4 does not shift out in cylinder hole.
The front and back neck of Boring mill 2 is rotatedly connected with the rear sliding bearing 30 that is positioned at large end cap 6 with the front slide bearing 19 that is positioned at housing 16 respectively, on the same circumference of Boring mill 2, be uniformly distributed odd number macropore and the aperture parallel with Boring mill 2 axis, the plunger 24.4 of plunger piston slippery boots assembly is placed in Boring mill 2 macropores, in macropore, be inlaid with reinforced plastic, the plunger 24.4 that it and stainless steel material are made forms trunk piston set, plunger 24.4 bulb project to outsource plastics, form ball-and-socket pair with piston shoes 24.2 ball-and-sockets; Boring mill 2 the right are floating discs 28, the right-hand member that is placed in the central spring 12 of odd number aperture uniform on Boring mill 2 is pressed in floating disc 28 on thrust plate 11, floating disc 28 and thrust plate 11 form Port Plate Pair, central spring 12 left ends 24.1 are pressed on the piston shoes 24.2 in each plunger piston slippery boots assembly 24 on swash plate 21 at the bottom of via piston shoes by the return plate 15 outside Boring mill 2, Boring mill 2 Wai center ball pivots 14, center ball pivot 14 through push rod 13, form piston shoes pair, the interior ball-and-socket face of center ball pivot 14 outer spherical surfaces and return plate 15 forms center typed ball bearing pair.
Adopt the valve plate distribution mode of floating, the left end of floating bushing 25 packs in the macropore of corresponding Boring mill 2, and the right-hand member of floating bushing 25 packs in the corresponding hole of floating disc 28, and interference fit makes floating disc 28 float with respect to Boring mill 2 and rotate with Boring mill 2.In flow cover 25, there are O shape rubber seal 26 and O shape Sealing shield ring 27 to seal, 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 sealing on flow surface.
At large end cap 6 centers, positioning ring 29 is housed, positioning ring 29 and locating stud 10 are fixed on thrust plate 11 on large end cap 6.Positioning ring 20 is fixed on swash plate 21 on housing 16.Swash plate 21, Boring mill 2, all has water guide groove on housing 16, and by the leakage hole drainage pressure release on housing 16.
Boring mill 2 axle heads seal by shaft seal 3, large end cap 6 is fixed by screw 5 and small end cover, and rely on O-ring seals 7 and large end cap 6 to seal, between large end cap 6 and Boring mill 2, seal by O-ring seals 9, between large end cap 6 and housing damping hole 16.1, seal by O-ring seals 8.
Working procedure of the present invention is:
Central spring 12 is applied to active force on center ball pivot 14 via depression bar 13, and will on average be applied on each plunger piston slippery boots assembly 24 through return plate 15, to ensure at the bottom of piston shoes that 24.1 are close to all the time on swash plate 21 inclined-planes and slide.High pressure water flows into the water suction gain 11.2 on the thrust plate 11 being communicated with it by the water inlet 6.1 on the large end cap 6 of motor, flow into again the floating disc 28, the intercommunicating pore of floating bushing 25 that are communicated with it and enter in the macropore of Boring mill 2, make to be arranged in into the plunger 24.4 of the plunger piston slippery boots assembly 24 of water one side 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, and the vertical stress component of this reaction force makes plunger piston slippery boots assembly 24 produce the moment of torsion to Boring mill 2.The plunger piston slippery boots assembly 24 that is positioned at motor backwater one side is forced to inside contract, and the water in cylinder bore, via the draining gain 11.1 on intercommunicating pore, the thrust plate 11 of floating bushing 25 and floating disc 28, is discharged from the osculum 6.2 of the large end cap 6 of motor.The plunger piston slippery boots assembly 24 of draining one side is stressed stressed identical with water inlet one side plunger piston slippery boots assembly 24, but due to the pressure difference of water inlet and outlet, the moment of torsion difference to Boring mill 2 producing, therefore plunger piston slippery boots assembly 24 to the effect of Boring mill 2 resultant moment of force under, Boring mill 2 drives plunger piston slippery boots assembly 24, floating bushing 25, floating disc 28 to rotate, outwards output torque and rotational speed, thus realize plunger 24.4 constantly to-and-fro motion in cylinder hole.
Friction pair used 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 piston shoes and swash plate, floating disc and thrust plate, Boring mill and front and back sliding bearing, ball pivot and return plate etc.Specific implementation process is:
Between the macropore of Boring mill 2 and plunger 24.4, there is certain gap, realize sealing by this gap.In water absorption course, in cylinder hole, it is high pressure water, poor in cylinder hole and plunger 24.4 seal clearance two ends formation high-low pressures, high pressure water in cylinder hole is leaked in housing 16 by seal clearance, this part is revealed the pressure of water in gap and is reduced successively, there is suitable bearing capacity, for cylinder hole and plunger 24.4, played supporting, lubricated, cooling effect.
High pressure water in cylinder hole is also by plunger center hole 24.42, and plunger ball center hole 24.41, piston shoes center hole 24.21 arrive between plunger ball and piston shoes ball-and-socket, lubricate; By 24.11 arriving at the bottom of piston shoes 24.1 and form friction pair with swash plate 21 at the bottom of piston shoes center hole 24.21, piston shoes, form hydrostatic support, and play lubricated, cooling effect again.
The aperture that high pressure water is connected with housing 16 by the water inlet 6.1 of large end cap 6 enters into the damping hole 16.1 of housing 16 inside, and introduce between front slide bearing 19 and housing 16 by the built-in valve nozzle 17 of housing 16, front slide bearing 19 is formed to hydrostatic support, also played lubricated, cooling effect.In addition, between front slide bearing 19 and Boring mill 2, all have many water guide grooves, the water in housing 16 is introduced wherein, friction pair is played to the effect of lubrication 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 ensure to obtain enough reliabilities and working life under water lubrication condition.Concrete condition is as follows:
Bearing pair has two: front slide bearing 19 and Boring mill 2, and rear 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 return plate 15, wherein center ball pivot 14 is stainless steel materials, and return plate 15 comprises two-part, and first portion is the matrix of stainless steel material, second portion is the ball-and-socket that injects engineering plastics in matrix, and Ta Yu center ball pivot 14 coordinates formation typed ball bearing pair.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 forms trunk piston set.24.4 points of 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 and piston shoes 24.2 ball-and-sockets form ball-and-socket pair.At the bottom of piston shoes, 24.1 is engineering plastics, forms piston shoes pair with the swash plate 21 of stainless steel material.
In a word, the present invention's main friction pairs pairing material used is stainless steel material and engineering plastics, corrosion resistance, intensity, toughness and the rigidity of component in pure water hydraulics axial motor have been ensured, the tribological properties such as the selflubricating of each friction pair, wear-resistant, vibration damping are ensured again, can effectively avoid at a high speed, adhesive wear, corrosive wear and the phenomenon such as stuck of friction pair heavy duty, water lubrication in the situation that, effectively improved functional reliability and working life.
Finally, it is also to be noted that, what more than enumerate is only several specific embodiments of the present invention.Obviously, the invention is not restricted to above enforcement, can also have many distortion.All distortion that those skilled in the art can directly derive or associate from content disclosed by the invention, all think protection scope of the present invention.
Claims (5)
1. the shaft type water hydraulic piston motor of a fully water lubricating, it is characterized in that it comprises: large end cap (6) is connected by screw thread and housing (16), small end cover (4) is affixed with large end cap (6), and large end cap (6), housing (16) form shell with small end cover (4); 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 piston shoes (24.2), at the bottom of piston shoes, (24.1) are pressed in piston shoes (24.2) endoporus, interference fit, has formed 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), piston shoes;
Adopt shaft type structure, Boring mill (2) is that transmission shaft and cylinder body are machined directly to a part, Boring mill (2) insert housing (16) endoporus in, respectively by be positioned at the front slide bearing (19) of housing (16) and be positioned at large end cap (6) rear sliding bearing (30) support, on Boring mill (2), have the odd number macropore parallel with axis and aperture, the plunger (24.4) in plunger piston slippery boots assembly (24) is placed in respectively formation trunk piston set in macropore, floating disc (28) is equipped with in Boring mill (2) one end, the one end that is distributed in the odd number of center spring (12) in Boring mill (2) aperture is pressed in floating disc (28) on thrust plate (11), floating disc (28) and thrust plate (11) form Port Plate Pair, central spring (12) the other end is pressed in push rod (13) to be assemblied on Boring mill Shang center ball pivot (14), being placed on the outer return plate (15) of center ball pivot (14) is pressed in the piston shoes (24.2) in each plunger piston slippery boots assembly (24) on swash plate (21) inclined-plane via (24.1) at the bottom of piston shoes, form piston shoes pair, one end of floating bushing (25) packs in the corresponding cylinder of Boring mill (2) hole, the other end of floating bushing (25) packs in the corresponding hole of floating disc (28), and floating disc (28) is unsteady with respect to Boring mill (2), at large end cap (6) center, positioning ring (29) is housed, positioning ring (29) and locating stud (10) are fixed on thrust plate (11) on large end cap (6), it is upper that swash plate (21) is fixed on housing (16) by positioning ring (20), and housing (16), Boring mill (2), swash plate all have water guide groove on (21),
In plunger (24.4), be provided with plunger center hole (24.42), in bulb, be provided with plunger ball center hole (24.41), in piston shoes (24.2), have piston shoes center hole (24.21), 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 piston shoes, (24.1) communicate successively with the surface of contact of swash plate (21);
On large end cap (6), be respectively equipped with water inlet (6.1) and osculum (6.2), in thrust plate (11), have water suction gain (11.2) and draining gain (11.1); When water suction, high pressure water flows into the water suction gain (11.2) of the thrust plate (11) communicating with it from the water inlet (6.1) of large end cap (6), then flows into the floating disc (28), the intercommunicating pore of floating bushing (25) that are communicated with it and enter in cylinder bore; When draining by the low-pressure water in cylinder bore via the draining gain (11.1) on the floating bushing (25), floating disc (28), thrust plate (11) that are communicated with it, discharge from the osculum (6.2) of large end cap (6);
Large end cap (6) and housing (16) are connected by damping hole (16.1), by damping hole (16.1) to introduce in housing (16) high pressure water forward sliding bearing (19) hydrostatic support is provided, and realize the interior pressure release of housing (16) by the leakage hole of housing (16);
Embedding and injection molding engineering plastics in the cylinder hole of Boring mill (2), built-in stainless steel material plunger (24.4).
2. the shaft type water hydraulic piston motor that requires described a kind of fully water lubricating according to right 1, is characterized in that: Boring mill (2) is fixed in the axis hole on shell by rear sliding bearing (30) and front slide bearing (19).
3. require the shaft type water hydraulic piston motor of described a kind of fully water lubricating according to right 1, it is characterized in that: described piston shoes (24.2) are made up of metallic material, at the bottom of described piston shoes, be made up of engineering plastics (24.1), and described boots shoulder pad sheet (24.3) is made up of engineering plastics;
4. the shaft type water hydraulic piston motor that requires described a kind of fully water lubricating according to right 1, is characterized in that: swash plate (21) inclination angle is 15～20 degree.
5. the shaft type water hydraulic piston motor that requires described a kind of fully water lubricating according to right 1, is characterized in that: between front slide bearing (19), swash plate (21) and Boring mill (2), all have the water guide groove for lubrication and cooling effect.
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| CN201210076764.XA CN102606378B (en) | 2012-03-21 | 2012-03-21 | Full water lubrication pass shaft type water hydraulic piston motor |
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| CN201210076764.XA CN102606378B (en) | 2012-03-21 | 2012-03-21 | Full water lubrication pass shaft type water hydraulic piston motor |
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| CN102606378B true CN102606378B (en) | 2014-11-26 |
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| DE2709985A1 (en) * | 1977-03-08 | 1978-09-14 | Prang Hans Juergen | Multi plunger high pressure water pump - has circle of plungers supported on ring above swashplate with ball bearings between |
| US5676035A (en) * | 1996-03-05 | 1997-10-14 | Fmc Corporation | Cam follower retainer for a swashplate pump |
| 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 |
| CN102155370A (en) * | 2011-03-30 | 2011-08-17 | 浙江大学 | Pure water hydraulic through-shaft type spherical distribution axial plunger pump |
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|---|---|
| CN102606378A (en) | 2012-07-25 |
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