CN104100482B - Wear-resistant axial plunger type hydraulic pump - Google Patents
Wear-resistant axial plunger type hydraulic pump Download PDFInfo
- Publication number
- CN104100482B CN104100482B CN201410357510.4A CN201410357510A CN104100482B CN 104100482 B CN104100482 B CN 104100482B CN 201410357510 A CN201410357510 A CN 201410357510A CN 104100482 B CN104100482 B CN 104100482B
- Authority
- CN
- China
- Prior art keywords
- swash plate
- hydraulic pump
- plunger piston
- slippery boots
- plunger
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Reciprocating Pumps (AREA)
Abstract
The embodiment of the invention discloses a wear-resistant axial plunger type hydraulic pump, relates to the technical field of hydraulic pressure, and solves the problem of excessive wear to plunger piston shoe assemblies. The wear-resistant axial plunger type hydraulic pump comprises a housing consisting of two end covers and a shell provided with a through hole, wherein a cylinder block is arranged in the through hole; a swash plate is arranged between the cylinder body and one of the end covers; cylinder holes are circumferentially distributed in the cylinder block along the axial direction; plunger piston shoe assemblies are arranged in the cylinder holes respectively; one end of each plunger piston shoe assembly exposed out of each cylinder hole is pressed against the swash plate; a return ring is arranged between the swash plate and the cylinder block, and comprises an annular damping portion; the annular damping portion sticks close to motion circumferential surfaces on the outer sides of all plunger piston shoe assemblies, and first fluid gaps are formed between the annular damping portion and the outer side faces of the plunger piston shoe assemblies. The embodiment is mainly applied to various hydraulic pumps, in particular to total-water-lubricating hydraulic pumps.
Description
Technical field
The present invention relates to technical field of hydraulic pressure, more particularly, to wear-resistant axial plunger type hydraulic pump.
Background technology
Pluger type hydraulic pump is that technical field of hydraulic pressure uses more high-pressure pump, in order to allow hydraulic pump cylinder holes in produce negative
Pressure is to suck the liquid needing supercharging, it usually needs the plunger in cylinder holes is connected on an end face of return plate, and
Another end face of return plate needs mortgage on swash plate, and wherein return plate is arranged on ball pivot.
When being moved by motor belt motor hydrodynamic press pump, return plate drives plunger to do piston movement in cylinder holes, realizes liquid
Supercharging, realize the piston movement of plunger by the way of this return plate, return plate can produce larger radial direction and make to plunger
Firmly, lead to plunger larger with the friction of cylinder holes during piston movement, so that the abrasion of plunger is more.
Content of the invention
The technical problem to be solved is to overcome the deficiencies in the prior art and provides wear-resistant axial plunger
Formula hydraulic pump, preferably reduces the abrasion of plunger.
For reaching above-mentioned purpose, the present invention adopts the following technical scheme that
A kind of wear-resistant axial plunger type hydraulic pump, including the shell of two end caps and the housing composition with through hole,
It is provided with cylinder body in described through hole, between cylinder body and one of end cap, is provided with swash plate, vertically according to Circle-Array on described cylinder body
Row are laid with cylinder holes, are respectively equipped with plunger piston slippery boots assembly in cylinder holes；Each plunger piston slippery boots assembly be exposed to one end outside cylinder holes with
Swash plate compresses, and is provided with backhaul circle between swash plate and cylinder body, and described backhaul circle includes ring-type damper portion, described ring-type damper portion against
All motion peripheries outside plunger piston slippery boots assembly, and be provided between first fluid and the lateral surface of plunger piston slippery boots assembly between
Gap.
Preferably, described plunger piston slippery boots assembly includes the sliding part compressing with swash plate, and described fluid gap includes ring-type resistance
The first fluid gap being formed between motion periphery outside Buddhist nun portion and whole sliding part.
Preferably, described backhaul circle also includes starting supporting part, starts and forms gathering sill between supporting part and swash plate, described
Directive wheel is correspondingly provided with plunger piston slippery boots assembly, directive wheel moves in gathering sill.
Preferably, the width of described gathering sill is more than the thickness of directive wheel.
Preferably, described plunger piston slippery boots assembly is provided with the neck being connected with directive wheel, and described startup supporting part is against neck
The motion periphery in outside, described fluid gap includes starting the being formed between the motion periphery outside supporting part and neck
Two fluid gaps.
Preferably, described hydraulic pump is filled with liquid in the cavity between swash plate and cylinder body in the course of the work, described liquid
Body enters first fluid gap and second fluid gap and produces centripetal force to the plunger piston slippery boots assembly of motion.
Preferably, described second fluid gap is less than first fluid gap.
Preferably, described backhaul circle also includes extending towards the end face of swash plate the first installation being formed from ring-type damper portion
Portion, described first installation portion is fixed between swash plate and shell；And/or
Described backhaul circle also includes extending the second installation portion being formed, the second peace from ring-type damper portion towards the end face of cylinder body
Dress portion is fixed between swash plate and cylinder body.
Preferably, it is provided with hydraulic cavities between each plunger piston slippery boots assembly and the inwall of corresponding cylinder holes, cylinder body is communicated with
The intercommunicating pore of hydraulic cavities, when described plunger piston slippery boots assembly moves into cylinder holes, hydraulic cavities volume reduces, described plunger piston slippery boots assembly
To swash plate move when hydraulic cavities volume increase.
Preferably, described backhaul circle is made using peek or pa6 or pom material.
The present invention provide for wear-resistant axial plunger type hydraulic pump, due to obstructed between plunger piston slippery boots assembly and swash plate
Cross return plate to connect, and be only in periphery setting backhaul circle, by the gap between backhaul circle and plunger piston slippery boots assembly
Liquid plays damping action, reduces centrifugal force to reduce abrasion, and the fluid resistance that this liquid produces is for plunger piston slippery boots
Assembly itself can also reduce friction, thus reducing abrasion.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Have technology description in required use accompanying drawing be briefly described it should be apparent that, drawings in the following description be only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, acceptable
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation of hydraulic pump in prior art；
Fig. 2 is the structural representation of hydraulic pump in the embodiment of the present invention；
Fig. 3 is a part partial enlarged drawing in Fig. 2；
Fig. 4 is b part partial enlarged drawing in Fig. 2；
Fig. 5 is the c-c sectional view of cylinder body in Fig. 2；
Fig. 6 is the structural representation that in the embodiment of the present invention, cylinder body adopts two-stage stepped hole；
Fig. 7 is the assembling schematic diagram of backhaul circle and swash plate in the embodiment of the present invention；
Fig. 8 is d part partial enlarged drawing in Fig. 2；
Fig. 9 is e part partial enlarged drawing in Fig. 2.
Reference: 10- end cap, 11- through hole, 20- housing, 30- cylinder body, 31- cylinder holes, 32- hydraulic cavities, 33- intercommunicating pore,
34- seal, 35- flange, 36- communicating passage, 40- plunger piston slippery boots assembly, 41- plunger, 42- piston shoes, 43- directive wheel, 44- neck
Portion, 50- swash plate, 60- rotating shaft, 70- thrust button, 71- liquid inlet, 72- communication gap, 75- valve plate, 80- mechanical seal group
Part, 81- axial seal, 82- first installed part, 83- second installed part, 84-o type sealing ring, 90- backhaul circle, 91- ring-type hinders
Buddhist nun portion, 92- first fluid gap, 93- startup supporting part, 94- gathering sill, 95- second fluid gap, 96- first installation portion,
97- second installation portion；
100- cylinder body, 200- plunger piston slippery boots assembly, 300- return plate, 400- swash plate, 500- rotating shaft, 600- ball pivot.
Specific embodiment
Axial plunger type hydraulic pump of the prior art is as shown in figure 1, this hydraulic pump includes cylinder body 100, plunger piston slippery boots group
Part 200 and return plate 300, and plunger piston slippery boots assembly 200 assembled with return plate 300, and return plate 300 is compressed with swash plate 400, leads to
Cross the rotation of cylinder body 100 so that plunger piston slippery boots assembly 200 is moved with respect to swash plate 400 with return plate 300 entirety, quite
Plunger piston slippery boots assembly 200 is driven to do piston movement in cylinder holes in the rotation by return plate 300.Simultaneously as return plate is
Do oblique circular motion, so, ball pivot 600 is provided with rotating shaft 500, return plate 300 is hinged on ball pivot 600.
Had following defects that using the hydraulic pump of ball pivot and backhaul dish structure above
First, return plate and ball pivot take the larger space within hydraulic pump, lead to hydraulic pump integrally to manufacture volume larger.
2nd, return plate moves in a circle together with plunger piston slippery boots assembly, lead to act on plunger piston slippery boots assembly from
Mental and physical efforts are larger, so that there is larger opposing force between plunger piston slippery boots assembly and cylinder holes, cause plunger piston slippery boots assembly
Easily it is worn with cylinder holes friction, and the position easily worn and torn is the one end towards swash plate.In addition, return plate is directly to post
Plug slippery boots assembly produces active force, also can make easily to be worn at plunger piston slippery boots assembly and cylinder holes friction.
3rd, return plate belongs to directly contact with plunger piston slippery boots assembly and is connected, and causes there is relatively noticeable effort between the two, holds
Easily cause plunger piston slippery boots assembly and produce increased wear with return plate contact position.
4th, adopt the scheme of return plate and ball pivot in addition it is also necessary to provide respective action power by spring, cause inside hydraulic pump
The parts of assembling are more, not only relatively costly, also so that assembling is complex.
In order to overcome the defect of hydraulic pump in prior art, the embodiment of the present invention provides a kind of axial plunger type hydraulic pump,
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described,
Obviously, described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based in the present invention
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of not making creative work, all
Belong to the scope of protection of the invention.
The present invention provides a kind of axial plunger type hydraulic pump of hydraulic pressure backhaul, as shown in Fig. 2 this axial plunger type hydraulic pump
Including two end caps 10 and housing 20, the shell of end cap 10 and housing 20 this hydraulic pump of composition, and it is provided with through hole in housing 20,
It is provided with the cylinder body 30 between two end caps in this through hole, described cylinder body 30 is laid with cylinder holes according to circumference array vertically
31, described cylinder holes is 2 to 24, is respectively equipped with plunger piston slippery boots assembly 40, by the plunger piston slippery boots in each cylinder holes 31 in cylinder holes
Assembly 40 carries out piston movement in turn, realizes the supercharging to liquid it is also possible to realize liquid to provide the motor of power, in order to overcome
The defect of prior art, one end that in the embodiment of the present invention, each plunger piston slippery boots assembly is exposed to outside cylinder holes and swash plate compress, and save
Remove return plate and ball pivot in prior art.On the basis of this inventive concept, the embodiment of the present invention also provides following examples.
Embodiment one
The embodiment of the present invention provides a kind of axial plunger type hydraulic pump of employing hydraulic pressure backhaul mode, as shown in Fig. 2 this axle
Include two end caps 10 and housing 20, the shell of end cap 10 and housing 20 this hydraulic pump of composition, and shell to pluger type hydraulic pump
It is provided with through hole in body 20, be provided with the cylinder body 30 between two end caps in this through hole, vertically according to circle on described cylinder body 30
All arrays are laid with cylinder holes 31, are respectively equipped with plunger piston slippery boots assembly 40 in cylinder holes, by the plunger piston slippery boots group in each cylinder holes 31
Part 40 carries out piston movement in turn, realizes the supercharging to liquid it is also possible to realize liquid to provide the motor of power.The present invention is implemented
Realize plunger piston slippery boots assembly 40 in example and carry out the scheme of piston movement in turn as shown in Fig. 2 in cylinder body 30 and one of end cap
Between swash plate 50 is set, one end that each plunger piston slippery boots assembly 40 is exposed to outside cylinder holes compresses with swash plate, no longer using existing skill
The scheme being driven by return plate in art, but plunger piston slippery boots assembly 40 is directly pressed on swash plate 50 so that normal work
During, plunger piston slippery boots assembly can rotate on swash plate.
Plunger piston slippery boots assembly 40 in the present invention includes plunger 41 and piston shoes 42, and wherein plunger 41 is arranged in cylinder holes 31,
Piston shoes 42 are pressed on swash plate 50, and are attached by ball pivot between plunger 41 and piston shoes 42.
There is provided power, as shown in Figure 2, Figure 3, Figure 4, the embodiment of the present invention in order to do piston movement to plunger piston slippery boots assembly 40
In be provided with hydraulic cavities 32 between each plunger piston slippery boots assembly 40 and the inwall of corresponding cylinder holes 31, and be communicated with liquid on cylinder body 30
The intercommunicating pore 33 (shown in Figure 5) in pressure chamber 32, is filled with setting of hydraulic cavities in liquid, and the present embodiment in hydraulic cavities 32
Put mode, so that hydraulic cavities volume reduces when plunger piston slippery boots assembly moves into cylinder holes, and plunger piston slippery boots assembly is to swash plate
During motion, hydraulic cavities volume increases.As shown in figure 3, when swash plate 50 presses to plunger piston slippery boots assembly 40 in cylinder holes to hydraulic cavities
Volume is compressed, and the volume due to corresponding hydraulic cavities 32 reduces, so the liquid in corresponding hydraulic cavities is flowed by intercommunicating pore 33
Move other hydraulic cavities so that the fluid pressure in other hydraulic cavities increases, as shown in figure 4, other hydraulic cavities are in fluid pressure
The increase of hydraulic cavities 32 volume is realized, thus driving the corresponding plunger piston slippery boots assembly 40 can be as swash plate 50 side in the case of increase
To motion.Above movement mechanism acts on each plunger piston slippery boots assembly in turn, so that plunger piston slippery boots assembly does piston movement.
Preferably, when the pressure in hydraulic cavities increases, in order to drive plunger piston slippery boots assembly item swash plate direction to move,
As shown in figure 4, cylinder holes 31 is designed as stepped hole in the embodiment of the present invention, in this stepped hole, the larger one end in aperture is towards swash plate
50, and the step post being mated with stepped hole is provided with plunger piston slippery boots assembly 40, it is to match specifically by plunger design
Step post so that between the step on the step and step post on stepped hole formed hydraulic cavities 32, the other end of cylinder body
It is provided with space, when pressure increases, this pressure can act predominantly on the step surface of step post naturally, and promote plunger to slide
Boots assembly 40 moves to swash plate 50 direction.In addition to by the way of stepped hole, those skilled in the art can also adopt other
Mode realizes the setting of hydraulic cavities, such as redesigns corresponding annular aperture in cylinder holes, and designs corresponding ring-type bar on plunger, ring
Shape bar and annular aperture cooperatively form hydraulic cavities.On embodiment of the present invention step post, less one end is located at and is provided with annular at step
Groove, thus reduce its abrasion.
Preferably due to when the pressure in hydraulic cavities 32 promotes plunger 41 to be moved, related to motive force size
In addition to the pressure in hydraulic cavities, what another played a crucial role is the step size on step post, in order to ensure to promote
Power can promote plunger piston slippery boots assembly to move to swash plate direction, can also ensure that plunger piston slippery boots assembly to needing pressurized liquid simultaneously
Pressurized effect, need to ensure on step post that front end promotes the minimum face area of supercharging and step post is appeared on the stage terrace simultaneously
Size design, designer of the present invention passes through many secondary designs, multiple recruitment evaluation, finally thinks on step post maximum cylinder
When the face area ratio of face area and minimum cylinder is designed as 1.15 to 1.75, corresponding effect is preferably it is also possible to by plunger
The volume design optimization of piston shoes.Generally, maximum when being relatively large in diameter of cylinder on step post, above-mentioned area ratio can
To select less design parameter, such as when maximum cylinder is with diameter greater than 24mm, above-mentioned area ratio now can select
1.15 to 1.5 about；And when on step post, the diameter of maximum cylinder is less, above-mentioned area ratio then needs to select larger design
Parameter, such as when the diameter of maximum cylinder is less than 24mm, above-mentioned area ratio now can select 1.4 to 1.75；Using above-mentioned
The selection mode of area ratio can either ensure motive force, can ensure that pressurized effect again it can also be ensured that plunger piston slippery boots assembly not
As for too heavy.
Preferably, the stepped hole in the embodiment of the present invention selects one-level stepped hole to achieve that its technical purpose, in order to protect
Card motive force, stepped hole can also be designed at least as the stepped hole of two-stage by the embodiment of the present invention, and adopt in such as Fig. 6 is exactly two
Level stepped hole and corresponding two-stage step post.
Preferably, as shown in Figure 2, Figure 3, Figure 4, the embodiment of the present invention is also slided in the axial sides of described stepped hole and plunger
It is provided with seal 34 between boots assembly 40, liquid in hydraulic cavities 32 will be made to be difficult to reveal by seal 34, certainly due to this
The hydraulic pump that invention provides is used primarily under hyperbaric environment, and hydraulic cavities more or less occur the circulation of some liquid with the external world,
In order to ensure that plunger piston slippery boots assembly can press to swash plate by hydraulic cavities 32, the sealing property in the embodiment of the present invention is using as lower section
Case: the sealing between the stepped hole and plunger piston slippery boots assembly of swash plate 50 one end is higher than the one end away from swash plate so that leaning on
Nearly swash plate 50 one end is difficult to reveal, and in general pressure is bigger away from swash plate one end, so the internal pressure leakage of hydraulic cavities
Will be less, even if causing to leak because pressure is excessive, liquid hydraulic cavities outside also occurs to hydraulic pressure endoluminal leak, thus right
Liquid in hydraulic cavities plays supplementary function, so that the pressure in hydraulic cavities can preferably act on plunger piston slippery boots assembly
On 40.Certainly, because hydraulic cavities more or less occur the circulation of some liquid with the external world, in order to ensure will not be to needing to be pressurized
Liquid pollution occurs, in the embodiment of the present invention hydraulic cavities liquid of filling and cylinder holes need the liquid phase of supercharging with；As us
The hydraulic pump that the present invention is provided applies to field of seawater desalination, then can fill seawater in hydraulic cavities and can also fill fresh water,
No matter fill seawater or fresh water to pollute all without to the seawater needing supercharging.
Preferably due to plunger is doing piston movement always, in order to prevent seal from coming off, as shown in figure 3, the present invention is real
Apply example and the flange 35 being interlocked with the step end face of stepped hole is provided with seal 34, be buckled on step surface by flange 35, make
Obtain seal and be difficult abjection from cylinder holes.
Preferably, the hydraulic pump that the present invention provides can adopt but be not limited to following scheme:
First as shown in Fig. 2 swash plate 50 is fixedly connected with end cap 10 and no relative motion, and plunger piston slippery boots assembly is in cylinder holes
Move in a circle on swash plate while inside doing piston movement, that is, drive cylinder body 30 to rotate by rotating shaft 60, and swash plate 50
Then it is fixed on and do not rotate on end cap.
Secondth, cylinder body is fixed on shell, drives swash plate to rotate by rotating shaft, successively by plunger under the rotation of swash plate
Slippery boots assembly presses in cylinder holes.
Preferably due to the liquid in hydraulic cavities can leak out, in order to ensure liquid can overall circulation, as Fig. 9 institute
Show, in the embodiment of the present invention, between cylinder body 30 and another end cap 10, be sequentially provided with thrust button 70 and valve plate 75, thrust button 70
It is provided with liquid inlet 71 with valve plate 75, be provided with positioned between the connection at liquid inlet 71 between thrust button 70 and valve plate 75
It is communicated with passage 36, the cavity between cylinder body and swash plate passes through described between gap 72, and cylinder body 30 lateral wall and housing 20
Communicating passage 36 is connected with liquid inlet 17 with communication gap 72, so that the liquid leaking out can be by above-mentioned connection position
Put back at liquid inlet, liquid all can be discharged when not using hydraulic pump.
Preferably, between above-mentioned cylinder body lateral wall and housing, setting communicating passage 36 can discontinuously be distributed in outside cylinder body 30
Between side wall and housing 20, e.g., cylinder body 30 lateral wall discontinuously arranges some communication groove.
Embodiment two
The embodiment of the present invention provides a kind of wear-resistant axial plunger type hydraulic pump, and this hydraulic pump saves return plate, and
Reduce the abrasion of plunger piston slippery boots assembly by corresponding scheme, specifically as shown in Fig. 2 this axial plunger type hydraulic pump includes two ends
Lid 10 and housing 20, end cap 10 and housing 20 form the shell of this hydraulic pump, and are provided with through hole in housing 20, set in this through hole
There is the cylinder body 30 between two end caps 10, described cylinder body 30 is laid with cylinder holes 31, cylinder holes according to circumference array vertically
It is respectively equipped with plunger piston slippery boots assembly 40 in 31, piston movement is carried out in turn by the plunger piston slippery boots assembly in each cylinder holes, realize
Supercharging to liquid provides the motor of power it is also possible to realize liquid.Realize plunger piston slippery boots assembly in the embodiment of the present invention to carry out
The scheme of piston movement as shown in Fig. 2 arranging swash plate 50 between cylinder body 30 and one of end cap 10, slide by each plunger in turn
One end that boots assembly 40 is exposed to outside cylinder holes is compressed with swash plate 50, no longer using the side being driven by return plate in prior art
Case, but plunger piston slippery boots assembly is directly pressed on swash plate so that in course of normal operation, plunger piston slippery boots assembly can be oblique
Rotate on disk.
In order to reduce the abrasion of plunger piston slippery boots assembly, as shown in Fig. 2 the embodiment of the present invention is provided between swash plate and cylinder body
Backhaul circle 90, in hydraulic pump course of normal operation, this backhaul circle 90 is not directly contacted with plunger piston slippery boots assembly 40, only right
Plunger piston slippery boots assembly 40 shields, and as shown in Figure 2 and Figure 7, described backhaul circle 90 includes ring-type damper portion 91, described ring-type
Motion periphery outside whole plunger piston slippery boots assemblies for the damper portion 91, and set and the lateral surface of plunger piston slippery boots assembly between
There is fluid gap, specifically, because plunger piston slippery boots assembly moves in a circle along swash plate, outside the periphery of this circular motion
Side is provided with ring-type damper portion 91, and is provided with first fluid gap between ring-type damper portion 91 and each plunger piston slippery boots assembly
92, due to being filled with fluid in first fluid gap 92 during hydraulic pump works, in plunger piston slippery boots assembly 40 high-speed rotation
During, the fluid in first fluid gap 92 produces centripetal force to plunger piston slippery boots assembly, can offset most plunger and slide
The centrifugal force of boots assembly 40, thus reduce the abrasion that plunger piston slippery boots assembly brings because of centrifugal force.And, due to ring-type damper portion 91
There is no directly contact and plunger piston slippery boots assembly between, but respective action power is produced by fluid, so can reduce plunger and slide
The active force of boots assembly, reduces its abrasion.
The embodiment of the present invention does not need special liquid filling body in fluid gap, hydraulic pump in the course of the work, liquid meeting
Flow in the cavity between swash plate and cylinder body, concrete circulation path may be referred to the explanation in embodiment one, and here is omitted,
Liquid in the cavities enters fluid gap and produces centripetal force to the plunger piston slippery boots assembly of motion, thus playing above-mentioned minimizing mill
The effect damaged.
In the embodiment of the present invention plunger piston slippery boots assembly realize piston movement type of drive can using embodiment a kind of
Scheme, no longer describes in detail herein, and certain those skilled in the art are it is also contemplated that other drive schemes.
As shown in Figure 2 and Figure 7, plunger piston slippery boots assembly includes the sliding part compressing with swash plate, general plunger piston slippery boots assembly 40
Including plunger 41 and piston shoes 42, and sliding part is arranged on piston shoes 42, and the ring-type damper portion 92 in the embodiment of the present invention is arranged
Sliding part formed motion periphery outside so that between motion periphery outside ring-type damper portion and whole sliding part
Form first fluid gap 92.
Due to driving plunger piston slippery boots assembly to do piston movement by the way of hydraulic cavities, idle for a long time in hydraulic pump
In the case of, the liquid in hydraulic cavities may leak, and leads to drive plunger piston slippery boots assembly to do piston movement, in order in liquid
Plunger piston slippery boots assembly is driven to do piston movement when press pump just starts, as shown in Figure 2 and Figure 7, returning in the embodiment of the present invention
Journey circle 90 also includes starting supporting part 93, starts and forms gathering sill 94, described plunger piston slippery boots group between supporting part 93 and swash plate 50
Directive wheel 43 is correspondingly provided with part 40, directive wheel is generally located on piston shoes 42, and directive wheel 43 moves in gathering sill 94,
At the beginning of starting, directive wheel 43 is conflicted on starting supporting part 93, thus driving plunger piston slippery boots assembly 40 to move along swash plate 50,
Form piston movement in cylinder holes 31 for the plunger 41, after starting a period of time, can fill out hydraulically full in hydraulic cavities 32, thus
It is no longer necessary to conflict and starting supporting part.So, in design, the width design being directed to groove 94 becomes to be more than the embodiment of the present invention
The thickness of directive wheel 43 is not so that under the full liquid case of filling in hydraulic cavities, starting supporting part 93 needs directive wheel 43 is entered
Row supports, thus playing the effect of protection backhaul circle 90.
In order to preferably protect plunger piston slippery boots assembly not to be worn, being also provided between second fluid in the embodiment of the present invention
Gap, as shown in Fig. 2, Fig. 3, Fig. 7, plunger piston slippery boots assembly is provided with the neck 44 being connected with directive wheel 43 to concrete set-up mode, described
Start motion periphery outside neck for the supporting part 93, start between supporting part 93 and the motion periphery in neck 44 outside
Form second fluid gap 95, be equivalent to and start the effect that supporting part serves a part of ring-type damper portion herein.Such one
Come, the fluid in first fluid gap 92 is then that the outside to directive wheel produces centripetal force, and the stream in second fluid gap 95
Body is then to produce centripetal force to outside neck, reduces the abrasion of plunger piston slippery boots assembly by above-mentioned two position centripetal force.
In order to protect directive wheel, second fluid gap 95 is designed as less than first fluid gap 92 by the embodiment of the present invention,
Allow fluid to act preferentially on neck, reduce the abrasion of directive wheel.In general, between first fluid gap and second fluid
The size of gap is required to less than 1mm.
Install for convenience, the backhaul circle of the embodiment of the present invention is provided with installation portion, by installation portion, backhaul circle is installed
Between cylinder body and swash plate, it is particularly but not limited to following scheme:
Firstth, as shown in Figure 2 and Figure 7, backhaul circle 90 also includes extending shape from ring-type damper portion 91 towards the end face of swash plate
The first installation portion 96 becoming, described first installation portion 96 is fixed between swash plate 50 and shell 20.
Secondth, as shown in Figure 2 and Figure 7, backhaul circle 90 also includes extending shape from ring-type damper portion 91 towards the end face of cylinder body
The second installation portion 97 becoming, the second installation portion 97 is fixed between swash plate 50 and cylinder body 30.
Above first installation portion 96 and the second installation portion 97 can be arranged simultaneously, have above-mentioned ring-type damper portion, start and prop up
Support part, the first installation portion, the second installation portion backhaul coil structures as shown in Figure 7.Due to ring-type damper portion with startup supporting part all
Need to produce corresponding friction, backhaul circle provided in an embodiment of the present invention can adopt but be not limited to peek (polyether-ether-ketone) material
Material or pa6 (nylon 6) material or pom (polyformaldehyde) material are made, and improve its rub proofness, extend backhaul circle and use the longevity
Life.
Embodiment three
Hydraulic pump of the prior art, due to the larger space within return plate and ball pivot occupancy hydraulic pump, leads to hydraulic pressure
It is larger that pump integrally manufactures volume, and the embodiment of the present invention provides a kind of compact axial plunger type hydraulic pump, concrete as shown in Fig. 2
This axial plunger type hydraulic pump includes two end caps 10 and housing 20, and end cap 10 and housing 20 form the shell of this hydraulic pump, and
And be provided with through hole in housing, be provided with the cylinder body 30 between two end caps in this through hole, on described cylinder body 30 vertically according to
Circumference array is laid with cylinder holes 31, is respectively equipped with plunger piston slippery boots assembly 40 in cylinder holes 31, by the plunger piston slippery boots in each cylinder holes
Assembly 40 carries out piston movement in turn, realizes the supercharging to liquid it is also possible to realize liquid to provide the motor of power.
The backhaul scheme of the plunger piston slippery boots assembly in the embodiment of the present invention can be provided using embodiment one and embodiment two
Scheme, carry out hydraulic pressure backhaul using hydraulic cavities, and using backhaul circle reduce abrasion, specifically repeat no more.
In order to reduce the design length of hydraulic pump, in the embodiment of the present invention, each plunger piston slippery boots assembly is exposed to outside cylinder holes
One end is directly compressed with swash plate 50, can save return plate and ball pivot, because ball pivot is mounted in rotating shaft, so can contract
The design length of short rotating shaft, thus reducing the design length of hydraulic pump, in order to ensure that the liquid between swash plate and cylinder body will not let out
Leakage, the embodiment of the present invention is provided with mechanical sealing assembly 80 in rotating shaft 60 on the lateral surface of cylinder body 30.
Mechanical sealing assembly in the embodiment of the present invention can adopt structure commonly used in the prior art, and concrete needs are accomplished
The periphery of mechanical sealing assembly and rotating shaft 60 realizes sealing, and needs to be sealed it is ensured that liquid with end cap or swash plate
Will not leak from penetrating hole of rotating shaft.
Mechanical sealing assembly, due to not adopting ball pivot, can be arranged on the outside near antibody for the rotating shaft by the embodiment of the present invention
On face, reduce the occupancy of rotating shaft entire length, shorten the design length of hydraulic pump.
In the embodiment of the present invention, the scheme of no return plate and ball pivot goes for the hydraulic pump of the following two kinds form:
First as shown in Fig. 2 swash plate 50 is fixedly connected with end cap 10 and no relative motion, and plunger piston slippery boots assembly 40 is in cylinder
Do in hole 31 and move in a circle on swash plate while piston movement, that is, drive cylinder body 30 to rotate by rotating shaft 60, and oblique
Disk 50 is then fixed on and does not rotate on end cap 10.
Secondth, cylinder body is fixed on shell, drives swash plate to rotate by rotating shaft, successively by plunger under the rotation of swash plate
Slippery boots assembly presses in cylinder holes.
In the embodiment of the present invention mechanical sealing assembly near one end of cylinder body except with rotating shaft lateral surface sealing in addition in addition it is also necessary to
Following at least one sealing structure:
First, the other end of mechanical sealing assembly and end cap 10 seal, and are equivalent to end cap 10 and are provided with and mechanical sealing assembly
The installation step matching, is sealed with mechanical sealing assembly by installation step, is leaked at end cap with liquidproof.
2nd, as shown in Figure 2 and Figure 8, the mechanical sealing assembly other end and swash plate seal, in figure swash plate 50 located at machinery
The installation step that black box matches, is sealed it is also possible to be prevented by the installation step on swash plate and mechanical sealing assembly
Only liquid leaks at end cap.
When using above-mentioned second encapsulation scheme, in order to reduce the length of hydraulic pump further, the embodiment of the present invention exists
End cap 10 is provided with the through hole 11 passing through for rotating shaft 60, and the part that rotating shaft 0 is threaded through is connected with connector, described through hole
11 maximum outside diameters being more than connector, and are installed with least partly described connector, such that it is able to by least a portion of connector
It is received in the through hole 11 of end cap, thus reducing the entire length of hydraulic pump so that hydraulic pump is compacter.
In the embodiment of the present invention, the mounting means near cylinder body one end for the mechanical sealing assembly can adopt following scheme: one,
Mechanical sealing assembly 80 is directly pressed on the end face of cylinder body 30 near one end of cylinder body, specifically as shown in Figure 8；2nd, turning
It is provided with the shaft shoulder outside cylinder body end face on axle, mechanical sealing assembly is pressed on the shaft shoulder near one end of cylinder body, and is
Shortening design of hydraulic pump length, the end face of the shaft shoulder and cylinder body can be compressed setting by the embodiment of the present invention.
In order to reduce the thickness of shell, end cap 10 is connected by screw thread spinner by the embodiment of the present invention with housing 20,
Concrete as shown in Fig. 2 rather than using the bolt connection in Fig. 1, in the case of so there is no bolt hole, then do not need housing
That designs is blocked up, reduces the design thickness of housing, so that hydraulic pump is compacter.
As shown in figure 8, in the embodiment of the present invention mechanical sealing assembly 80 include axial seal 81, the first installed part 82,
Second installed part 83, the axial direction of axial seal 81 countershaft is sealed, and the first installed part 82 and the second installed part 83 are successively
It is assemblied on axial seal, and between the second installed part 83 and end cap or swash plate, be provided with o type sealing ring 84, close by o type
Seal 84 seals to the through hole of end cap or swash plate.
The embodiment of the present invention is used primarily in various hydraulic pumps, especially in the hydraulic pump of fully water lubricating.
The above, the only specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, and any
Those familiar with the art the invention discloses technical scope in, the change or replacement that can readily occur in, all answer
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be defined by scope of the claims.
Claims (10)
1. a kind of wear-resistant axial plunger type hydraulic pump, including the shell of two end caps and the housing composition with through hole, institute
State and in through hole, be provided with cylinder body, between cylinder body and one of end cap, be provided with swash plate, vertically according to circumference array on described cylinder body
It is laid with cylinder holes, in cylinder holes, be respectively equipped with plunger piston slippery boots assembly；It is characterized in that, each plunger piston slippery boots assembly is exposed to outside cylinder holes
One end compress with swash plate, be provided with backhaul circle between swash plate and cylinder body, described backhaul circle includes ring-type damper portion, described ring-type resistance
Motion periphery outside whole plunger piston slippery boots assemblies for the Buddhist nun portion, and it is provided with stream and the lateral surface of plunger piston slippery boots assembly between
Body space.
2. wear-resistant axial plunger type hydraulic pump according to claim 1 is it is characterised in that described plunger piston slippery boots assembly
Including the sliding part compressing with swash plate, described fluid gap includes the motion periphery outside ring-type damper portion and whole sliding parts
Between formed first fluid gap.
3. wear-resistant axial plunger type hydraulic pump according to claim 1 and 2 it is characterised in that described backhaul circle also
Including starting supporting part, start and form gathering sill between supporting part and swash plate, described plunger piston slippery boots assembly is correspondingly provided with guiding
Wheel, directive wheel moves in gathering sill.
4. wear-resistant axial plunger type hydraulic pump according to claim 3 is it is characterised in that the width of described gathering sill
Thickness more than directive wheel.
5. wear-resistant axial plunger type hydraulic pump according to claim 3 is it is characterised in that described plunger piston slippery boots assembly
It is provided with the neck being connected with directive wheel, motion periphery outside neck for the described startup supporting part, described fluid gap bag
Include the second fluid gap being formed between the motion periphery starting outside supporting part and neck.
6. wear-resistant axial plunger type hydraulic pump according to claim 5 is it is characterised in that described hydraulic pump is in work
During be filled with liquid in cavity between swash plate and cylinder body, described liquid enters first fluid gap and second fluid gap
And centripetal force is produced to the plunger piston slippery boots assembly of motion.
7. wear-resistant axial plunger type hydraulic pump according to claim 6 is it is characterised in that described second fluid gap
Less than first fluid gap.
8. wear-resistant axial plunger type hydraulic pump according to claim 1 and 2 it is characterised in that:
Described backhaul circle also includes extending the first installation portion being formed, described first peace from ring-type damper portion towards the end face of swash plate
Dress portion is fixed between swash plate and shell；And/or
Described backhaul circle also includes extending the second installation portion being formed, the second installation portion from ring-type damper portion towards the end face of cylinder body
It is fixed between swash plate and cylinder body.
9. wear-resistant axial plunger type hydraulic pump according to claim 1 and 2 is it is characterised in that each plunger piston slippery boots
It is provided with hydraulic cavities between assembly and the inwall of corresponding cylinder holes, cylinder body is communicated with the intercommunicating pore of hydraulic cavities, described plunger piston slippery boots
When assembly moves into cylinder holes hydraulic cavities volume reduce, described plunger piston slippery boots assembly to swash plate move when hydraulic cavities volume increase.
10. wear-resistant axial plunger type hydraulic pump according to claim 1 and 2 is it is characterised in that described backhaul circle is adopted
Made with peek or pa6 or pom material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410357510.4A CN104100482B (en) | 2014-07-21 | 2014-07-21 | Wear-resistant axial plunger type hydraulic pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410357510.4A CN104100482B (en) | 2014-07-21 | 2014-07-21 | Wear-resistant axial plunger type hydraulic pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104100482A CN104100482A (en) | 2014-10-15 |
| CN104100482B true CN104100482B (en) | 2017-01-18 |
Family
ID=51668938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410357510.4A Active CN104100482B (en) | 2014-07-21 | 2014-07-21 | Wear-resistant axial plunger type hydraulic pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104100482B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016011898A1 (en) * | 2014-07-21 | 2016-01-28 | 沃尔科技有限公司 | Axial plunger type hydraulic pump |
| CN105257493A (en) * | 2015-10-23 | 2016-01-20 | 北京航科发动机控制***科技有限公司 | Device for reducing comprehensive function of surface contact force and linear velocity of sliding shoe |
| CN115234461B (en) * | 2022-07-22 | 2023-11-24 | 中航力源液压股份有限公司 | Gear disc and spherical hinge antifriction mechanism of aviation hydraulic pump |
| CN115013280B (en) * | 2022-07-26 | 2023-12-05 | 绩溪山合机械有限公司 | Bearing reversing shaft of hydraulic pump accessory |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08159014A (en) * | 1994-12-08 | 1996-06-18 | Hitachi Constr Mach Co Ltd | Axial piston type liquid operated rotating machinery |
| CN201344114Y (en) * | 2008-12-09 | 2009-11-11 | 天津市泽华源泵业科技发展有限公司 | Novel small slide block of radial plunger pump |
| CN103615385B (en) * | 2013-11-27 | 2017-06-06 | 北京工业大学 | A kind of detachable hydraulic swash plate pump plunger piston slippery boots assembly |
| CN103939312B (en) * | 2014-04-25 | 2016-07-06 | 福州大学 | A kind of double huge discharge axial plunger pump of balanced type |
| CN204082514U (en) * | 2014-07-21 | 2015-01-07 | 浙江沃尔液压科技有限公司 | Wear-resistant axial plunger type hydraulic pump |
-
2014
- 2014-07-21 CN CN201410357510.4A patent/CN104100482B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104100482A (en) | 2014-10-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104100482B (en) | Wear-resistant axial plunger type hydraulic pump | |
| CN104153986B (en) | The axial plunger type hydraulic pump of hydraulic pressure backhaul | |
| WO2016011898A1 (en) | Axial plunger type hydraulic pump | |
| CN103403412A (en) | Seal assemblies for reciprocating and rotary applications | |
| CN209781143U (en) | Axial plunger pump | |
| CN101871442B (en) | Radial plunger high-pressure water pump | |
| CN206035700U (en) | A single cylinder high pressure common rail firewood fuel pump assembly for rail system | |
| CN206290432U (en) | A kind of gear pump of use shock resistance type floating side plate | |
| CN204082514U (en) | Wear-resistant axial plunger type hydraulic pump | |
| CN102556321B (en) | Floating type spherical rotating vane steering engine | |
| CN102953989A (en) | Floating scroll compressor | |
| CN201763555U (en) | Novel integrated axial plunger pump | |
| CN106051162A (en) | Shaft lever floating sealing device and application method | |
| CN201212519Y (en) | Pin device | |
| CN105114278B (en) | Axial plunger pump | |
| CN204941800U (en) | A kind of axial variable displacement plunger pump | |
| CN204878445U (en) | Wet -type multi -disc service brake ware | |
| CN108266372B (en) | Valve type flow distribution radial plunger emulsion pump | |
| CN107605655B (en) | A kind of two end plate oil-allocation type low speed high torque hydraulic motors | |
| CN203939689U (en) | The axial plunger type hydraulic pump of hydraulic pressure backhaul | |
| CN203939690U (en) | Compact type axial plunger type hydraulic pump | |
| CN201196263Y (en) | Mechanical sealing device | |
| CN106321393B (en) | Discharge capacity compensates variable speed regulation sloping tray axial plunger piston pump automatically | |
| CN101531331A (en) | Novel hydraulic lifting jack | |
| CN210396989U (en) | Quantitative radial oil distribution pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent for invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 266 No. 314306 Zhejiang province Haiyan Tong Yuan Zhen Tong Yuan Road Applicant after: Wal Science and Technology Ltd. Address before: 66 No. 314306 Zhejiang province Haiyan Tong Yuan Tong Yuan Zhen Road Industrial Area Applicant before: Zhejiang Woer Hydraulic Technology Co., Ltd. |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: ZHEJIANG WOER HYDRAULIC TECHNOLOGY CO., LTD. TO: WOER TECHNOLOGY CO., LTD. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |