CN207795490U - Valve plate, axial plunger pump and axial piston motor - Google Patents
Valve plate, axial plunger pump and axial piston motor Download PDFInfo
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- CN207795490U CN207795490U CN201721696316.4U CN201721696316U CN207795490U CN 207795490 U CN207795490 U CN 207795490U CN 201721696316 U CN201721696316 U CN 201721696316U CN 207795490 U CN207795490 U CN 207795490U
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- 238000013016 damping Methods 0.000 claims description 76
- 238000000605 extraction Methods 0.000 claims description 23
- 230000006835 compression Effects 0.000 abstract description 21
- 238000007906 compression Methods 0.000 abstract description 21
- 230000010349 pulsation Effects 0.000 abstract description 21
- 230000035939 shock Effects 0.000 abstract description 21
- 230000007704 transition Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 2
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008111 motor development Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Abstract
The utility model is related to a kind of valve plate, axial plunger pump and axial piston motors, wherein valve plate comprising low-pressure area, higher-pressure region and presetting pressure area, presetting pressure area are set between low-pressure area and higher-pressure region, and presetting pressure area is equipped with buffer structure.The utility model by the way that buffer structure is arranged in presetting pressure area, can compensator or trimmer pressure, extend the promotion of oil pressure or reduce the time, reduce compression shock and flow pulsation, reduce noise.
Description
Technical field
The utility model is related to a kind of engineering machinery field more particularly to valve plate, axial plunger pump and axial columns Saimaas
It reaches.
Background technology
Axial plunger pump has many advantages, such as high power density, high pressure and big flow, is most complicated, technology in hydraulic drive
One of highest element of content.China's axial plunger pump industry is started late, and technical foundation is weak so that China's axial plunger pump
Also there is a big difference with external advanced product for product.Since reform and opening-up, China's industry flourishes, engineering machinery and agriculture machine
Tool etc. is increasing for Hydraulic Elements demand.But due to being limited by key technology, kernel component is mainly with import
Based on, especially high-performance, low noise axial plunger pump, it is most of all to use external product.
Vibration and noise reducing is the key technology for being related to axial plunger pump/motor development prospect.With the development of the society, people
Requirement to working environment is higher and higher, and noise is an important measurement index of working environment quality.Countries in the world are to hydraulic pressure
The noise of pump also has specific regulation.In hydraulic test, pump/motor is the Main Noise Sources of hydraulic test.Axial plunger
The discontinuity and oil sucting cavity of the fluid that pump/motor is exported due to cylinder body and the separated structure of oil-discharging cavity make which create compared with
Big flow pulsation and hydraulic noise.
Compression shock and flow pulsation are one of the main reason for causing noise.Compression shock and flow pulsation and pump/horse
There is certain relationship up to the structure of itself, but most of from assignment process.When plunger cavity turns between oil-discharging cavity, oil sucting cavity
It moves, intracavitary oil liquid pressure height is converted, and when Fast Compression or expansion, can cause stress impact and flow pulsation.
Utility model content
The purpose of this utility model is a kind of valve plate of proposition, axial plunger pump and axial piston motor, wherein can be solved
Certainly hydraulic shock and the big problem of flow pulsation.
To achieve the above object, the utility model provides a kind of valve plate comprising low-pressure area, higher-pressure region and pre- pressure regulation
Area, presetting pressure area are set between low-pressure area and higher-pressure region, and presetting pressure area is equipped with buffer structure.
One preferably or in alternative embodiment, presetting pressure area includes along the direction for surrounding the rotation of flow disk axis, from low pressure
Area to the lockup pressure area being arranged between higher-pressure region, and/or, along above-mentioned direction, from higher-pressure region to the pre- drop being arranged between low-pressure area
Pressure area.
One preferably or in alternative embodiment, buffer structure includes being set to lockup pressure area and the region close to higher-pressure region
First buffer structure.
One preferably or in alternative embodiment, the first buffer structure includes the first damping hole and first flow, first flow
It is configured to be directed through the oil stream of the first damping hole to higher-pressure region.
One preferably or in alternative embodiment, the first buffer structure includes at least two first damping holes, at least one of
A first damping hole is relative to another first damping hole close to higher-pressure region.
One preferably or in alternative embodiment, oil extraction flows to the second side of valve plate along the first side of valve plate, the
The aperture that one damping hole is located at the first side of valve plate is less than the aperture that the first damping hole is located at the second side of valve plate.
One preferably or in alternative embodiment, oil extraction flows to the second side of valve plate along the first side of valve plate, the
One buffer structure includes the first compensating groove, and the first compensating groove is set to the first side of valve plate and connection higher-pressure region.
One preferably or in alternative embodiment, the size of the first compensating groove gradually increases along the direction of lockup pressure area to higher-pressure region
Greatly.
One preferably or in alternative embodiment, the side of the first compensating groove includes the straightway of at least two Different Slopes.
One preferably or in alternative embodiment, the first compensating groove includes at least one in vee gutter, dovetail groove, U-type groove
Kind.
One preferably or in alternative embodiment, buffer structure includes being set to pre- depressor area and the region close to low-pressure area
Second buffer structure.
One preferably or in alternative embodiment, the second buffer structure includes the second damping hole and second flow channel, second flow channel
It is configured to be directed through the oily release of the second damping hole.
One preferably or in alternative embodiment, oil extraction flows to the second side of valve plate along the first side of valve plate, the
The aperture that two damping holes are located at the first side of valve plate is less than the aperture that the second damping hole is located at the second side of valve plate.
One preferably or in alternative embodiment, oil extraction flows to the second side of valve plate along the first side of valve plate, the
Two buffer structures include the second compensating groove, and the second compensating groove is set to the first side of valve plate and connection low-pressure area.
One preferably or in alternative embodiment, the size of the second compensating groove gradually increases along pre- depressor area to low-pressure area.
One preferably or in alternative embodiment, the side of the second compensating groove includes the straightway of at least two Different Slopes.
One preferably or in alternative embodiment, the second compensating groove includes at least one in vee gutter, dovetail groove, U-type groove
Kind.
One preferably or in alternative embodiment, low-pressure area is equipped with the first oilhole, and higher-pressure region is equipped with the second oilhole.
To achieve the above object, the utility model provides a kind of axial plunger pump comprising above-mentioned valve plate.
To achieve the above object, the utility model provides a kind of axial piston motor comprising above-mentioned valve plate.
Based on the above-mentioned technical proposal, the utility model at least has the advantages that：
In one or more embodiments, valve plate includes the low-pressure area mutually completely cut off and higher-pressure region, and valve plate further includes
Presetting pressure area, presetting pressure area are set between low-pressure area and higher-pressure region, and presetting pressure area is equipped with buffer structure, and buffer structure can buffer
Pressure extends the promotion of oil pressure or reduces the time, reduces compression shock and flow pulsation, reduce noise.
Description of the drawings
Attached drawing described herein is used to provide a further understanding of the present invention, and is constituted part of this application,
The exemplary embodiment of the utility model and the description thereof are used to explain the utility model, does not constitute to the improper of the utility model
It limits.In the accompanying drawings：
Fig. 1 is the schematic diagram of the second side for the valve plate that the utility model one or more embodiment provides；
Fig. 2 is the schematic diagram of the first side for the valve plate that the utility model one or more embodiment provides；
Fig. 3 is the A-A schematic cross-sectional views (the first damping hole) in Fig. 1；
Fig. 4 is the B-B schematic cross-sectional views (the second damping hole) in Fig. 1；
Fig. 5 is the C-C schematic cross-sectional views in Fig. 1；
Fig. 6 (a) is the D-D schematic cross-sectional views in Fig. 2；Fig. 6 (b) is the E-E schematic cross-sectional views of Fig. 6 (a).
Attached figure label：
1- low-pressure areas；The first oilholes of 11-；
The higher-pressure regions 2-；The second oilholes of 21-；22- grooves；
3- lockup pressure areas；The first damping holes of 31-；32- first flows；The first compensating grooves of 33-；
The pre- depressor areas of 4-；The second damping holes of 41-；42- second flow channels；The second compensating grooves of 43-.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, the technical solution in embodiment is carried out it is clear, complete
Ground describes.Obviously, described embodiment is only a part of the embodiment of the utility model, instead of all the embodiments.
Based on the embodiments of the present invention, institute that those of ordinary skill in the art are obtained without creative efforts
There is other embodiment, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be understood that term "center", " longitudinal direction ", " transverse direction ", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown, is merely for convenience of describing the present invention and simplifying the description, rather than indicates or imply and is signified
Device or element must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as to this practicality
The limitation of novel protected range.
Valve plate generally on the shell of pump/motor inlet port and oil discharge outlet be connected to, pass through the rotary motion of cylinder body, it is real
The isolation of existing oil suction and oil extraction, reaches the function of oil suction and oil extraction.
The oil of cylinder body inner plunger chamber discharge flows to the second side of valve plate, external fuel feeding edge along the first side of valve plate
The second side of valve plate flows to the first side of valve plate.
As shown in Figure 1 and Figure 2, in some embodiments, valve plate includes sealing against each other the low-pressure area 1 separated and higher-pressure region
2。
Low-pressure area 1 is equipped with the first oilhole 11.First oilhole 11 may be used arcuate socket, the arc core of arcuate socket and valve plate
The center of circle overlaps.
Higher-pressure region 2 is equipped with the second oilhole 21.Second oilhole 21 may be used arcuate socket, the arc core of arcuate socket and valve plate
The center of circle overlaps.
Optionally, in the case where valve plate is used for axial plunger pump, higher-pressure region 2 is oil extraction area, can be arranged two
Above second oilhole 21, the second oilhole 21 are used as outage.Further, groove 22 can be arranged (such as Fig. 2 institutes in higher-pressure region 2
Show), each second oilhole 21 can be set in groove 22.
In above-mentioned each embodiment, valve plate further includes presetting pressure area.Presetting pressure area is set to low-pressure area 1 and higher-pressure region 2
Between, presetting pressure area is equipped with buffer structure.In at least one embodiment, buffer structure can compensator or trimmer pressure, extend oil pressure
It is promoted or is reduced the time, reduce compression shock and flow pulsation, reduce noise.
In some embodiments, presetting pressure area may include along around flow disk axis rotation direction, from low-pressure area 1 to
The lockup pressure area 3 being arranged between higher-pressure region 2, alternatively, from higher-pressure region 2 to the pre- depressor area 4 being arranged between low-pressure area 1.
In some embodiments, presetting pressure area may include along around flow disk axis rotation direction, from low-pressure area 1 to
The lockup pressure area 3 being arranged between higher-pressure region 2, and, from higher-pressure region 2 to the pre- depressor area 4 being arranged between low-pressure area 1.
Lockup pressure area 3 in above-described embodiment is the plunger of plunger pump/motor from low-pressure area 1 to the area of 2 transition of higher-pressure region
Domain.
Pre- depressor area 4 in above-described embodiment is the plunger of plunger pump/motor from higher-pressure region 2 to the area of 1 transition of low-pressure area
Domain.
Buffer structure in above-described embodiment may include damping hole and runner.Damping hole runs through valve plate.Runner is set to
The second side of valve plate, oil extraction first pass around damping hole, second side are reached from the first side of valve plate, then by setting
Be placed in the guiding function of the runner of the second side of valve plate, into corresponding low-pressure area 1 or higher-pressure region 2, can extend oil with
Low-pressure area 1 or the contact of higher-pressure region 2 and time for be connected to, compression shock and flow pulsation are effectively reduced, vibrates and make an uproar to reduce
Sound.
Oil extraction flows to the second side of valve plate along the first side of valve plate, and damping hole is located at the first side of valve plate
Aperture be less than damping hole be located at valve plate second side aperture.
Buffer structure in above-described embodiment can also include compensating groove, and compensating groove is set to the first side of valve plate.Oil
After compensating groove, enter back into corresponding low-pressure area 1 or higher-pressure region 2, can extend oil contacted with low-pressure area 1 or higher-pressure region 2 and
The time of connection, compression shock and flow pulsation are effectively reduced, to reduce vibration and noise.
Optionally, the size of compensating groove gradually increases along presetting pressure area to the direction of low-pressure area 1 or higher-pressure region 2, makes oil
Circulation area gradually increases.
Further, the side of compensating groove includes the straightway of at least two Different Slopes, can further be relieved stress
Impact and flow pulsation.
Compensating groove in above-described embodiment may include at least one of vee gutter, dovetail groove, U-type groove.Such as：It unloads
Lotus slot can be the composite structure of vee gutter and dovetail groove, and the bevel edge of the slope and dovetail groove of the bevel edge of vee gutter is oblique
Rate is different.
In above-described embodiment, the fabricated structure of the damping hole and compensating groove of presetting pressure area setting can effectively reduce pressure
Power is impacted and flow pulsation, and the noise thereby resulted in, promotes plunger cavity oil liquid pressure gentle transition.
The buffer structure of compensating groove and damping hole combination is arranged in valve plate, can significantly decrease axial plunger pump/motor
Compression shock and flow pulsation.The various embodiments of buffer structure are set forth below.
In some embodiments, buffer structure includes being set to lockup pressure area 3 and first slow close to the region of higher-pressure region 2
Rush structure.
As shown in Figure 1 and Figure 2, in some embodiments, the first buffer structure includes the first damping hole 31 and first flow
32, the first damping hole 31 runs through valve plate, and first flow 32 is set to the second side of valve plate, and first flow 32 is adapted to
The oil stream of the first damping hole 31 is enough directed through to higher-pressure region 2 (as shown in Figure 5).It is first in the oil of lockup pressure area 3, plunger cavity discharge
The first damping hole 31 is first passed through, higher-pressure region 2 is then guided by first flow 32, the time of boosting is effectively extended, reduces
Compression shock and flow pulsation, correspondingly, decreasing resulting noise.
As shown in figure 3, at least one embodiment, the first buffer structure may include at least two first damping holes
31, the first damping hole of at least one of which 31 is relative to another first damping hole 31 close to higher-pressure region 2, the oil of plunger cavity discharge
Each first damping hole 31 can be passed sequentially through and then higher-pressure region 2 is guided by first flow 32.
Oil extraction flows to the second side of valve plate along the first side of valve plate, and the first damping hole 31 is located at the of valve plate
The aperture of one side is less than the aperture that the first damping hole 31 is located at the second side of valve plate.
In lockup pressure area 3, pressure oil first passes around the small-bore section of the first damping hole 31, then passes through the first damping hole 31
Large aperture section, can effective control pressure variable gradient, reduce compression shock.
In some embodiments, oil extraction flows to the second side of valve plate, the first buffering knot along the first side of valve plate
Structure can also include the first compensating groove 33, and the first compensating groove 33 is set to the first side of valve plate and connection higher-pressure region 2.
The size of first compensating groove 33 gradually increases along the direction of lockup pressure area 3 to higher-pressure region 2.Pressure oil first passes around
Then the small size section of one compensating groove 33 passes through the large scale section of the first compensating groove 33, can effective control pressure variable gradient,
Reduce compression shock.
In some embodiments, the straightway of single slope may be used in the side of the first compensating groove 33.Other
In embodiment, the side of the first compensating groove 33 may include the straightway of at least two Different Slopes.Using at least two differences
The straightway of slope can significantly more efficient extension pressure rising time, reduce compression shock and flow pulsation, can effectively reduce
Noise.
Optionally, the first compensating groove 33 includes at least one of vee gutter, dovetail groove, U-type groove.Such as：Such as Fig. 6
(a) shown in, the first compensating groove 33 can be the combination of vee gutter and dovetail groove.As shown in Fig. 6 (b), the first compensating groove 33
Slot bottom can be in 90 °.
First damping hole 31 and the first compensating groove 33 be set in lockup pressure area 3, low pressure oil passes through the first damping hole 31 and the
One compensating groove 33 is connected to higher-pressure region 2, can effectively extend the pressure transition time, reduce suddenly boosting caused by compression shock and
Flow pulsation.
As shown in Figure 1 and Figure 2, at least one embodiment, buffer structure can also include be set to pre- depressor area 4 and
The second buffer structure close to the region of low-pressure area 1.
In some embodiments, the second buffer structure includes the second damping hole 41 and second flow channel 42, the second damping hole 41
Through valve plate, second flow channel 42 is set to the second side of valve plate, and second flow channel 42 is configured to be directed through second
The oily release of damping hole 41.The second damping hole 41 is first passed around in the oil of pre- depressor area 4, plunger cavity discharge, then passes through second
42 release of runner, effectively extends the time of decompression, reduces compression shock and flow pulsation, correspondingly, decreasing thus
The noise of generation.
In at least one embodiment, the second buffer structure may include at least two second damping holes 41, at least within
One the second damping hole 41 is relative to another second damping hole 41 close to low-pressure area 1.The oil of plunger cavity discharge can lead to successively
It crosses each second damping hole 41 and then guides the housing cavity of pump/motor by second flow channel 42, to carry out release.
As shown in figure 4, oil extraction flows to the second side of valve plate along the first side of valve plate, the second damping hole 41 is located at
The aperture of the first side of valve plate is less than the aperture that the second damping hole 41 is located at the second side of valve plate.
In pre- depressor area 4, pressure oil first passes around the small-bore section of the second damping hole 41, then passes through the second damping hole 41
Large aperture, be connected to housing cavity.In this way, can effective control pressure variable gradient, reduce compression shock.
In some embodiments, oil extraction flows to the second side of valve plate, the second buffering knot along the first side of valve plate
Structure can also include the second compensating groove 43, and the second compensating groove 43 is set to the first side of valve plate and connection low-pressure area 1.
The size of second compensating groove 43 gradually increases along pre- depressor area 4 to the direction of low-pressure area 1.Pressure oil first passes around
Then the small size section of two compensating grooves 43 passes through the large scale section of the second compensating groove 43, can effective control pressure variable gradient,
Reduce compression shock.
In some embodiments, the straightway of single slope may be used in the side of the second compensating groove 43.Other
In embodiment, the side of the second compensating groove 43 may include the straightway of at least two Different Slopes.Using at least two differences
The straightway of slope can significantly more efficient extension dip time, reduce compression shock and flow pulsation, can effectively reduce
Noise.
Optionally, the second compensating groove 43 includes at least one of vee gutter, dovetail groove, U-type groove.Such as：Second unloads
Lotus slot 43 can be the combination of vee gutter and dovetail groove.
In pre- depressor area 4, the second compensating groove of second damping hole 41 and two kind of angle combinations being connected with shell is set
43, high pressure oil is connected to by the second damping hole 41 with shell first, after be connected to low-pressure area 1 by the second compensating groove 43, can
Effective control pressure variable gradient reduces compression shock and flow pulsation caused by decompression suddenly.
In the specific embodiment that valve plate is applied to axial plunger pump, presetting pressure area includes lockup pressure area 3 and pre- drop
Pressure area 4.
The triangular groove of two the first damping holes 31 and a Different Slope is arranged for lockup pressure area 3 and dovetail groove is combined into the
One compensating groove 33, concrete structure：The second half section in lockup pressure area 3 is arranged in two the first damping holes 31, wherein the first damping hole 31
It is less than the aperture that the first damping hole 31 is located at the second side of valve plate positioned at the aperture of the first side of valve plate, is arranged simultaneously
There is the first oil duct 32 being connected with the second oilhole 21.
To when oil extraction transition, low pressure oil first passes through the covering area of lockup pressure area 3 for oil suction, and part low pressure oil passes through one of them
First damping hole 31 is located at the small-bore section of the first side of valve plate, after be located at the of valve plate by first damping hole 31
The large aperture section of two side faces, is then connected with the second oilhole 21 of higher-pressure region 2 by the first oil duct 32, starts pre-loading；Also
Some low pressure oil is located at the small-bore section of the first side of valve plate by another first damping hole 31, after by this
One damping hole 31 is located at the large aperture section of the second side of valve plate, then passes through second oil of first oil duct 32 with higher-pressure region 2
Hole 21 is connected, and starts pre-loading, last triangular groove of some low pressure oil Jing Guo a Different Slope and dovetail groove group
First compensating groove 33 made of conjunction is finally connected to the second oilhole 21 completely.Extend that oil extraction is connected with higher-pressure region 2 when
Between, the time of pressure rise is effectively extended, avoids causing larger compression shock and flow pulsation.
What one the second damping hole 41 of setting of pre- depressor area 4 and the triangular groove of a Different Slope were composed with dovetail groove
Second compensating groove 43, concrete structure：Second damping hole 41 was arranged in the second half section of pre- depressor area 4, and the second damping hole 41 is located at and matches
The aperture of the first side of flow table is less than the aperture that the second damping hole 41 is located at the second side of valve plate.
Oil extraction is to when oil suction transition, and high pressure oil first passes through the covering area of pre- depressor area 4, and partial high pressure oil is by the second damping
Hole 41 be located at the first side of valve plate small-bore section, after by the second damping hole 41 be located at valve plate second side it is big
Aperture section, after the second flow channel 42 that is arranged by the second side of valve plate 5 be connected with pump/motor housing cavity and unloaded
Pressure, the second compensating groove 43 that partial high pressure oil is composed by the triangular groove of a Different Slope with dovetail groove, with the first oil
Hole 11 is connected to.Extend the time that oil extraction is connected with low-pressure area 1, effectively extend the time of pressure reduction, avoid causing compared with
Big compression shock and flow pulsation.
The present embodiment additionally provides a kind of axial plunger pump comprising above-mentioned valve plate.
In the above-described embodiments, the low-pressure area 1 of valve plate is low pressure oil suction area, and higher-pressure region 2 is high pressure oil extraction area.
The present embodiment additionally provides a kind of axial piston motor comprising above-mentioned valve plate.
In the above-described embodiments, the low-pressure area 1 of valve plate is low pressure oil extraction area, and higher-pressure region 2 is high pressure oil suction area.
The axial plunger pump and axial piston motor provided in the present embodiment has been all made of the cam combination formula of Different Slope
The buffer structure that compensating groove and damping hole are combined.
In the description of the present invention, it should be understood that limiting zero using the words such as " first ", " second "
Part, it is only for convenient for being distinguished to above-mentioned parts, there is no Stated otherwise such as, above-mentioned word there is no particular meaning,
Therefore it should not be understood as the limitation to scope of protection of the utility model.
Finally it should be noted that:Above example is only to illustrate the technical solution of the utility model rather than limits it
System；Although the utility model is described in detail with reference to preferred embodiment, those of ordinary skill in the art should
Understand：It can still modify to specific embodiment of the present utility model or some technical characteristics are equally replaced
It changes；Without departing from the spirit of technical solutions of the utility model, should all cover in the claimed technical solution of the utility model
In range.
Claims (20)
1. a kind of valve plate, it is characterised in that：Including low-pressure area (1), higher-pressure region (2) and presetting pressure area, the presetting pressure area is set
Between the low-pressure area (1) and the higher-pressure region (2), the presetting pressure area is equipped with buffer structure.
2. valve plate as described in claim 1, it is characterised in that：The presetting pressure area includes being rotated along around flow disk axis
Direction, from the low-pressure area (1) to the lockup pressure area (3) being arranged between the higher-pressure region (2), and/or, along the direction,
The pre- depressor area (4) being arranged between from the higher-pressure region (2) to the low-pressure area (1).
3. valve plate as claimed in claim 2, it is characterised in that：The buffer structure includes being set to the lockup pressure area
(3) first buffer structure in the region and close to the higher-pressure region (2).
4. valve plate as claimed in claim 3, it is characterised in that：First buffer structure include the first damping hole (31) and
First flow (32), the first flow (32) are configured to be directed through the oil stream of first damping hole (31) to institute
State higher-pressure region (2).
5. valve plate as claimed in claim 4, it is characterised in that：First buffer structure includes at least two described first
Damping hole (31), the first damping hole (31) described at least one of which is relative to the first damping hole (31) described in another close to institute
State higher-pressure region (2).
6. valve plate as claimed in claim 4, it is characterised in that：Oil extraction flows to the of valve plate along the first side of valve plate
Two side faces, the aperture that first damping hole (31) is located at the first side of valve plate are located at less than first damping hole (31)
The aperture of the second side of valve plate.
7. valve plate as claimed in claim 3, it is characterised in that：Oil extraction flows to the of valve plate along the first side of valve plate
Two side faces, first buffer structure include the first compensating groove (33), and first compensating groove (33) is set to the first of valve plate
Side and the connection higher-pressure region (2).
8. valve plate as claimed in claim 7, it is characterised in that：The size of first compensating groove (33) is along the pre-loading
The direction of area (3) to the higher-pressure region (2) gradually increases.
9. valve plate as claimed in claim 7, it is characterised in that：The side of first compensating groove (33) includes at least two
The straightway of Different Slope.
10. valve plate as claimed in claim 7, it is characterised in that：First compensating groove (33) includes vee gutter, trapezoidal
At least one of slot, U-type groove.
11. valve plate as claimed in claim 2, it is characterised in that：The buffer structure includes being set to the pre- depressor area
(4) and close to second buffer structure in the region of the low-pressure area (1).
12. valve plate as claimed in claim 11, it is characterised in that：Second buffer structure includes the second damping hole (41)
With second flow channel (42), the oil that the second flow channel (42) is configured to be directed through second damping hole (41) unloads
Pressure.
13. valve plate as claimed in claim 12, it is characterised in that：Oil extraction flows to valve plate along the first side of valve plate
Second side, the aperture that second damping hole (41) is located at the first side of valve plate are less than the second damping hole (41) position
In the aperture of the second side of valve plate.
14. valve plate as claimed in claim 11, it is characterised in that：Oil extraction flows to valve plate along the first side of valve plate
Second side, second buffer structure include the second compensating groove (43), and second compensating groove (43) is set to the of valve plate
One side and the connection low-pressure area (1).
15. valve plate as claimed in claim 14, it is characterised in that：The size of second compensating groove (43) is along the pre- drop
Pressure area (4) gradually increases to the low-pressure area (1).
16. valve plate as claimed in claim 14, it is characterised in that：The side of second compensating groove (43) includes at least two
The straightway of a Different Slope.
17. valve plate as claimed in claim 14, it is characterised in that：Second compensating groove (43) includes vee gutter, ladder
At least one of shape slot, U-type groove.
18. valve plate as described in claim 1, it is characterised in that：The low-pressure area (1) is equipped with the first oilhole (11), described
Higher-pressure region (2) is equipped with the second oilhole (21).
19. a kind of axial plunger pump, it is characterised in that：Including such as claim 1~18 any one of them valve plate.
20. a kind of axial piston motor, it is characterised in that：Including such as claim 1~18 any one of them valve plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721696316.4U CN207795490U (en) | 2017-12-08 | 2017-12-08 | Valve plate, axial plunger pump and axial piston motor |
Applications Claiming Priority (1)
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107859609A (en) * | 2017-12-08 | 2018-03-30 | 徐工集团工程机械有限公司 | Valve plate, axial plunger pump and axial piston motor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107859609A (en) * | 2017-12-08 | 2018-03-30 | 徐工集团工程机械有限公司 | Valve plate, axial plunger pump and axial piston motor |
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Effective date of registration: 20220727 Address after: 221004 26 Tuo Lan Shan Road, Xuzhou economic and Technological Development Zone, Jiangsu Patentee after: Jiangsu Xugong Construction Machinery Research Institute Co.,Ltd. Address before: 221004 26 Tuo Lan Shan Road, Xuzhou economic and Technological Development Zone, Jiangsu Patentee before: XCMG CONSTRUCTION MACHINERY Co.,Ltd. |
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