CN106438255B - Coaxial homonymy compact variant structural suitable for two-way change displacement plunger pump - Google Patents
Coaxial homonymy compact variant structural suitable for two-way change displacement plunger pump Download PDFInfo
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- CN106438255B CN106438255B CN201610966596.XA CN201610966596A CN106438255B CN 106438255 B CN106438255 B CN 106438255B CN 201610966596 A CN201610966596 A CN 201610966596A CN 106438255 B CN106438255 B CN 106438255B
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- variable
- spool
- mouthfuls
- plunger pump
- way change
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention discloses a kind of coaxial homonymy compact variant structurals suitable for two-way change displacement plunger pump, for changing the angle of inclination of the swash plate of two-way change displacement plunger pump, which includes variable spool link pin, variable valve core link rod, variable spring, variable spool, spring shim, variable valve pocket and screw plug；Variable spring, variable spool and variable valve pocket placed coaxial and it is respectively positioned on swash plate homonymy, occupied space volume is very small.The size of three sections of outer circles of size and variable spool of variable valve pocket stepped hole can guarantee when the commutation of two-way change displacement plunger pump causes oil inlet and oil outlet to exchange, the effective area that high pressure oil acts on variable spool does not change, i.e., variable characteristics are identical when two-way change displacement plunger pump rotates and reverse.The fluid of oil inlet and oil outlet is directly introduced into variable valve pocket by the present invention, realizes the discharge capacity of two-way change displacement plunger pump with the change discharge capacity mechanism of load pressure linear change, amplitude of variation is determined by the rigidity of variable spring.
Description
Technical field
The present invention relates to a kind of variant structurals of plunger pump, are suitable for two-way change displacement plunger pump especially in aviation field
Coaxial homonymy compact variant structural.
Background technology
As aircraft system is transmitted to by power liquid the differentiation of power-by-wire, electric hydrostatic actuator instead of parts of traditional liquid
Pressure system, and the bidirectional ram pump in electric hydrostatic actuator is also presented to the high rotating speed of high pressure, high-power, high power to weight ratio, compact light
The directions such as quantization, low-pressure pulsation are developed.Pressurized strut reciprocating stroke in electric hydrostatic actuator is rotated forward and anti-by bidirectional ram pump
Realization is transferred, the discharge capacity of pressurized strut required bidirectional ram pump under different load pressures is different, and displacement variation is needed and born
It is in a linear relationship to carry pressure.Therefore, the bidirectional ram pump in electric hydrostatic actuator needs a kind of variant structural, has in space resources
Compact lightweight as possible in the case of limit, realize no matter when rotating forward or reversion variable characteristics having the same.
Traditional plunger pump variant structural separately pacifies the structure for increasing swash plate angle of inclination and reduction swash plate angle of inclination
It sets, is respectively placed in the top and bottom of swash plate, is i.e. homonymy not placed coaxial, or be placed in one end of swash plate simultaneously but be located at swash plate two
Side, i.e., coaxial not homonymy dispose.Larger space volume will be occupied in this way, be unfavorable for two-way change displacement plunger pump and be realized Gao Gongchong
Than.
Invention content
In view of the above-mentioned deficiencies in the prior art, it is an object of the present invention to provide a kind of suitable for the same of two-way change displacement plunger pump
Axis homonymy compact variant structural realizes discharge capacity with load pressure linear change, and variable characteristics are not with two-way change discharge capacity plunger
Pump direction of rotation changes and changes, and compact overall structure and occupies little space.
The present invention is technical solution used by solving its technical problem：It is a kind of suitable for two-way change displacement plunger pump
Coaxial homonymy compact variant structural, the structure is for changing the angle of inclination of the swash plate of two-way change displacement plunger pump, the structure
Including variable spool link pin, variable valve core link rod, variable spring, variable spool, spring shim, variable valve pocket and screw plug；
There are A mouthfuls of vessels and B mouthfuls of vessels, A mouthfuls of vessels to be connected to A mouthfuls of runners on the shell of the two-way change displacement plunger pump, B
Mouth vessel is connected to B mouthfuls of runners, and B mouthfuls of runners is oil outlets when A mouthfuls of runners are the oil inlet of two-way change displacement plunger pump, A mouthfuls of streams
B mouthfuls of runners is oil inlets when road is the oil outlet of two-way change displacement plunger pump；
The swash plate upper end processes connecting rod mating groove, and machining shape is in the same size on connecting rod mating groove two side and axis
To the corresponding round end flat key slit-like through-holes in position, variable spool link pin sequentially passes through first round end flat key slit-like through-holes, becomes
The through-hole and second round end flat key slit-like through-holes on valve core link rod are measured, and tangent with two round end flat key slit-like through-holes inner walls,
And it is hinged with the through-hole on variable valve core link rod, variable valve core link rod can be with variable valve core link rod pin along round end flat key slit-like through-holes
Inner wall slides up and down；
The variable spool link pin is by axial limiting；
The variable spring is in compressive state always, and one end is close to variable spool connecting-rod head face, other end
It is close to spring shim, and spring shim is pressed on shell inner convex platform；
The variable valve pocket outer circle and shell coordinate, and one side end face coordinates with shell inner convex platform, another side end face by with
The screw plug that shell is threadedly coupled pushes down limit, and the stepped hole at variable valve pocket center is by D1 internal diameters valve opening, D2 internal diameters valve opening, D3 internal diameters
Valve opening forms, and the A mouths of variable valve pocket draw oily groove and are aligned with A mouthfuls of vessels, and B mouthfuls are drawn oily groove and are aligned with B mouthfuls of vessels, and A mouthfuls are drawn oil
It is provided at least one A mouthfuls of radial through-hole on groove, B mouthfuls are drawn and are provided at least one B mouthfuls of radial through-hole on oily groove, by A mouthfuls of runners
It is connected to B mouthfuls of runners with the stepped hole at variable valve pocket center.
Variable spool one end and variable valve core link rod are connected through a screw thread, the ladder of the other end and variable valve pocket center
Hole coordinates, and variable spool has the outer circle of three sections of different-diameters, D1 outer diameter spool outer circles and D1 internal diameter valve opening clearance fits, D2 outer diameters
Spool outer circle and D2 internal diameter valve opening clearance fits, D3 outer diameter spool outer circles and D3 internal diameter valve opening clearance fits, diameter D1 are less than straight
Diameter D2, diameter D2 are less than diameter D3, and the circular area of diameter D2 subtracts the difference of the circular area of diameter D1 equal to diameter D3
Circular area subtract diameter D2 circular area difference, variable center spool is provided with by radial through-hole and axial center hole group
At variable spool draw oilhole, be connected to variable valve pocket end cavity and shell internal cavity.
Variable spring, variable spool and variable valve pocket placed coaxial and it is respectively positioned on swash plate homonymy, D1 outer diameters on variable spool
The outer distance of round variable spring of spool is nearest.
Further, the swash plate both sides trunnion Yu deep groove ball bearing inner ring interference fit, deep groove ball bearing outer ring with
Shell is interference fitted, and swash plate can be swung around trunnion axis.
Further, described variable spool link pin one end has boss limit, the other end to have through-hole, gasket endoporus and variable
Valve core link rod pin coordinates, and gasket is blocked in split pin installation in through-holes.
Further, the variable valve pocket outer circle distributed three sections of o-ring grooves, and one is disposed in each o-ring groove
A O-ring seals, each O-ring seals each side dispose a baffle ring and draw oily groove and B mouthfuls are drawn oil to seal A mouthfuls
Pressure oil in groove.
Further, in the D1 outer diameter spools outer circle, D2 outer diameter spools outer circle, D3 outer diameter spool outer circles of the variable spool
It is provided with balancing slit.
The beneficial effects of the invention are as follows：Coaxial homonymy compact provided by the invention suitable for two-way change displacement plunger pump
The fluid of oil inlet and oil outlet is directly introduced into variable valve pocket by variant structural, realizes the discharge capacity of two-way change displacement plunger pump
With the change discharge capacity mechanism of load pressure linear change, amplitude of variation is determined by the rigidity of variable spring；Variant structural is extremely compact,
Variable spring, variable spool and variable valve pocket placed coaxial and it is respectively positioned on swash plate homonymy, occupied space volume is very small；Variable flow valve
The size of three sections of outer circles of size and variable spool of set stepped hole can guarantee leads to oil inlet in the commutation of two-way change displacement plunger pump
When being exchanged with oil outlet, the effective area that high pressure oil acts on variable spool does not change, i.e., variable characteristics are in two-way change
It is identical when displacement plunger pump rotates and reverse.
Description of the drawings
Fig. 1 (a) is the dimensional structure diagram of the present invention.
Fig. 1 (b) is the partial enlarged view in the portions I in Fig. 1 (a).
Fig. 2 is the sectional view of the runner side A mouthfuls of of the present invention.
Fig. 3 is the sectional view of the runner side B mouthfuls of of the present invention.
Fig. 4 is part explosive view of the present invention.
In all the appended drawings, identical reference numeral is used for indicating identical part or structure, wherein：
1-swash plate, 1a-round end flat key slit-like through-holes, 1b-trunnion, 1c-connecting rod mating groove, 2-deep groove ball bearings,
3-variable spool link pins, 4-variable valve core link rods, 5-variable springs, 6-variable spools, 6a-D1 outer diameter spool outer circles,
6b-D2 outer diameter spool outer circles, 6c-D3 outer diameter spool outer circles, 6d-variable spool draw oilhole, 6e-balancing slit, 7-spring pads
Piece, 8-variable valve pockets, 8a-D1 internal diameter valve openings, 8b-D2 internal diameter valve openings, 8c-D3 internal diameter valve openings, 8d-B mouthfuls of radial through-hole,
8e-A mouthfuls of radial through-hole, 8f-variable valve pocket end cavity, 8g-B mouthfuls are drawn oily groove, and 8h-A mouthfuls are drawn oily groove, and 9-O shapes are close
Seal, 10-baffle rings, 11-screw plugs, 12-shells, 12a-shell inner convex platform, 12b-A mouthfuls of vessels, 12c-B mouthfuls of vessels,
12d-B mouthfuls of runners, 12e-A mouthfuls of runners, 13-split pins, 14-gaskets.
Specific implementation mode
1 to 4 the invention will be further described below in conjunction with the accompanying drawings.
A kind of coaxial homonymy compact variant structural suitable for two-way change displacement plunger pump, the structure is for changing two-way
Become the angle of inclination of the swash plate 1 of displacement plunger pump, which includes variable spool link pin 3, variable valve core link rod 4, variable bullet
Spring 5, variable spool 6, spring shim 7, variable valve pocket 8 and screw plug 11.
There are A mouthfuls of 12c, A mouthfuls of vessels of 12b and B mouthfuls of vessel vessel 12b and A on the shell 12 of the two-way change displacement plunger pump
The 12e connections of mouth runner, B mouthfuls of vessel 12c are connected to B mouthfuls of runner 12d, and A mouthfuls of runner 12e are the oil inlet of two-way change displacement plunger pump
When B mouthfuls of runner 12d be oil outlet, B mouthfuls of runner 12d is oil inlets when A mouthfuls of runner 12e are the oil outlet of two-way change displacement plunger pump
Mouthful.
Left and right trunnion 1b on the swash plate 1 is interference fitted with 2 inner ring of deep groove ball bearing, 2 outer ring of deep groove ball bearing and shell
Body 12 is interference fitted, and swash plate 1 can be around trunnion 1b axis oscillatings；1 upper end of swash plate processes connecting rod mating groove 1c, connecting rod mating groove
Machining shape is in the same size on the two sides 1c and the corresponding round end flat key slit-like through-holes 1a of axial position, variable spool link pin 3
It is logical to sequentially pass through first round end flat key slit-like through-holes 1a, the through-hole on variable valve core link rod 4 and second round end flat key flute profile
Hole 1a, and tangent with two round end flat key slit-like through-holes 1a inner walls and hinged with the through-hole on variable valve core link rod 4, variable flow valve
Core connecting rod 4 can be slided up and down with variable valve core link rod pin 3 along round end flat key slit-like through-holes 1a inner walls.
Described 3 one end of variable spool link pin has boss, the other end to have through-hole, 14 endoporus of gasket and variable spool link pin
3 cooperations, gasket 14 is blocked in the installation of split pin 13 in through-holes, to limit the axial displacement of variable spool link pin 3.
The variable spring 5 is in compressive state always, and one end is close to 4 end face of variable valve core link rod, the other end
Face is close to spring shim 7, and spring shim 7 is pressed on shell inner convex platform 12a.
8 outer circle of variable valve pocket coordinates with shell 12, and left end face coordinates with shell inner convex platform 12a, right end face
Limit is pushed down by the screw plug 11 being threadedly coupled with shell 12, the stepped hole at 8 center of variable valve pocket is by D1 internal diameter valve opening 8a, D2 internal diameters
Valve opening 8b, D3 internal diameter valve opening 8c compositions, the A mouths of variable valve pocket 8 draw oily groove 8h and are aligned with A mouthfuls of vessel 12b, and B mouthfuls are drawn oily groove
8g is aligned with B mouthfuls of vessel 12c, and A mouthfuls are drawn to open on oily groove 8h and draw oily groove there are two orthogonal A mouthfuls of radial through-hole 8e, B mouthful
It is opened on 8g there are two orthogonal B mouthfuls of radial through-hole 8d, allows 12e and B mouthfuls of the A mouths runner of two-way change displacement plunger pump to flow with this
Fluid in road 12d flows into the stepped hole at 8 center of variable valve pocket.
Described 6 one end of variable spool and variable valve core link rod 4 are connected through a screw thread, the other end and 8 center of variable valve pocket
Stepped hole coordinates, and variable spool 6 has the outer circle of three sections of different-diameters, D1 outer diameter spool outer circle 6a and D1 internal diameter valve opening 8a to match in gap
It closes, D2 outer diameters spool outer circle 6b and D2 internal diameter valve opening 8b clearance fits, D3 outer diameters spool outer circle 6c and the gaps D3 internal diameter valve opening 8c
Cooperation, diameter D1 are less than diameter D2, and diameter D2 is less than diameter D3, and the circular area of diameter D2 subtracts the circular area of diameter D1
Difference equal to diameter D3 circular area subtract diameter D2 circular area difference, ensure that in two-way change displacement plunger pump
When commutation causes oil inlet and oil outlet to exchange, the effective area that high pressure oil acts on variable spool does not change.Variable
6 center of spool is provided with the variable spool being made of radial through-hole and axial center hole and draws oilhole 6d, has been connected to variable valve pocket end
Cavity 8f and shell internal cavity, prevent dead volume from generating so that variable spool 6 is in variable valve pocket 8 along axial-movement time-varying
Amount valve pocket end cavity 8f inner fluids can be replenished in time or be discharged.
Variable spring 5, variable spool 6 and 8 placed coaxial of variable valve pocket and it is respectively positioned on 1 homonymy of swash plate, D1 on variable spool 6
Outer diameter spool outer circle 6a is nearest apart from variable spring 5, ensure that high pressure oil acts on pressure and variable spring on variable spool 6
The pressure direction of 5 pairs of variable valve core link rods 4 is on the contrary, i.e. variable spring 5 gives the pressure that swash plate 1 increases its angle of inclination, change always
Measure the pulling force that spool 6 reduces its angle of inclination to swash plate 1 always.
In the state of no work, swash plate 1 is generated two-way change displacement plunger pump due to the pre compressed magnitude of variable spring 5
Pressure is in maximum tilt angle position, and variable spool 6 is in maximum stretching state.When two-way change displacement plunger pump rotates forward, A mouthfuls
Runner 12e is oil inlet, and B mouthfuls of runner 12d are oil outlet, and the high pressure oil in B mouthfuls of runner 12d flows into B mouthfuls of vessel 12c, then passes through
B mouths on variable valve pocket 8 draw oily groove 8g and B mouthfuls of radial through-hole 8d and flow into the stepped hole at 8 center of variable valve pocket, act on change
On the ladder end face for measuring spool 6.When the reversion of two-way change displacement plunger pump, A mouthful runner 12e are oil outlet, B mouthfuls of runner 12d for into
Hydraulic fluid port, the high pressure oil in A mouthfuls of runner 12e flows into A mouthfuls of vessel 12b, then draws oily groove 8h and A mouthfuls by the A mouths on variable valve pocket 8
Radial through-hole 8e is flowed into the stepped hole at 8 center of variable valve pocket, is acted on the ladder end face of variable spool 6.Oil outlet high pressure
The active force that oil acts on variable spool 6 is transmitted to swash plate 1 by variable valve core link rod 4, variable spool link pin 3.
When load pressure raising, i.e. oil outlet pressure rise, the pressure acted on variable spool 6 increases and more than change
The pressure that spring 5 generates swash plate 1 is measured, then variable spool 6 subtracts in the promotion drop-down swash plate 1 of high-voltage oil liquid to its angle of inclination
Small direction movement, and variable spring 5 then correspondingly increases decrement, and the pressure of bigger is generated with balance variable spool to swash plate
6 pulling force generated.The angle of inclination of swash plate reduces when balance, and the discharge capacity of two-way change displacement plunger pump reduces.When load pressure drops
It is low, i.e., oil outlet pressure reduction when, the pressure that acts on variable spool 6 reduces and is generated to swash plate 1 less than variable spring 5
Pressure, then the promotion variable of variable spring 5 valve core link rod 4, presses swash plate 1 to be moved to the increased direction in its angle of inclination, variable flow valve
Core 6 is also pulled out more elongations, and correspondingly 5 decrement of variable spring reduces, and generate smaller pressure to swash plate is become with balancing
Measure the pulling force that spool 6 generates.The angle of inclination of swash plate increases when balance, and the discharge capacity of two-way change displacement plunger pump increases.To sum up institute
It states, which realizes the discharge capacity of two-way change displacement plunger pump with the change discharge capacity mechanism of load pressure linear change, variation
Amplitude is determined by the rigidity of variable spring 5, and variable characteristics are identical when two-way change displacement plunger pump rotates and reverse.
8 outer circle of variable valve pocket distributed three sections of o-ring grooves, and one O shape of placement seals in each o-ring groove
Circle 9, each O-ring seals 9 each side dispose one baffle ring 10 to seal A mouthfuls draw oily groove 8h and B mouthfuls draw it is oily recessed
Pressure oil in slot 8g.
It is opened on D1 outer diameter spool outer circle 6a, D2 outer diameter spool outer circle 6b, the D3 outer diameter spool outer circles 6c of the variable spool 6
There is balancing slit 6e, promotes variable spool 6 preferably coaxial with 8 centre bore axis of variable valve pocket at work, avoid it significantly
It tilts.
Claims (5)
1. a kind of coaxial homonymy compact variant structural suitable for two-way change displacement plunger pump, the structure is for changing two-way change
The angle of inclination of the swash plate (1) of displacement plunger pump, it is characterised in that：The structure includes variable spool link pin (3), variable spool
Connecting rod (4), variable spring (5), variable spool (6), spring shim (7), variable valve pocket (8) and screw plug (11)；
There are A mouthfuls of vessels (12b) and B mouthfuls of vessels (12c), A mouthfuls of vessels (12b) on the shell (12) of the two-way change displacement plunger pump
It is connected to A mouthfuls of runners (12e), B mouthfuls of vessels (12c) are connected to B mouthfuls of runners (12d), and A mouthfuls of runners (12e) are two-way change discharge capacity column
B mouthfuls of runners (12d) are oil outlet, B when A mouthfuls of runners (12e) are the oil outlet of two-way change displacement plunger pump when filling in the oil inlet of pump
Mouth runner (12d) is oil inlet；
Swash plate (1) upper end processing connecting rod mating groove (1c), machining shape size on the two side connecting rod mating groove (1c)
Consistent and the corresponding round end flat key slit-like through-holes (1a) of axial position, variable spool link pin (3) sequentially pass through first round end
Flat key slit-like through-holes (1a), the through-hole on variable valve core link rod (4) and second round end flat key slit-like through-holes (1a), and with two
Round end flat key slit-like through-holes (1a) inner wall is tangent, and hinged with the through-hole on variable valve core link rod (4), variable valve core link rod (4)
It can be slided up and down along round end flat key slit-like through-holes (1a) inner wall with variable valve core link rod pin (3)；
The variable spool link pin (3) is by axial limiting；
The variable spring (5) is in compressive state always, and one end is close to variable valve core link rod (4) end face, the other end
Face is close to spring shim (7), and spring shim (7) is pressed on shell inner convex platform (12a)；
Variable valve pocket (8) outer circle coordinates with shell (12), and one side end face coordinates with shell inner convex platform (12a), the other side
Limit is pushed down in end face by the screw plug (11) being threadedly coupled with shell (12), and the stepped hole at variable valve pocket (8) center is by D1 internal diameter valves
The A mouths of hole (8a), D2 internal diameters valve opening (8b), D3 internal diameters valve opening (8c) composition, variable valve pocket (8) draw oily groove (8h) and A mouthfuls of appearances
Chamber (12b) is aligned, and B mouthfuls are drawn oily groove (8g) and are aligned with B mouthfuls of vessels (12c), and A mouthfuls are drawn and are provided at least one A on oily groove (8h)
Mouthful radial through-hole (8e), B mouthfuls are drawn and are provided at least one B mouthfuls of radial through-hole (8d) on oily groove (8g), by A mouthfuls of runners (12e) and B
Mouth runner (12d) is connected to the stepped hole at variable valve pocket (8) center；
Described variable spool (6) one end and variable valve core link rod (4) are connected through a screw thread, the other end and variable valve pocket (8) center
Stepped hole cooperation, variable spool (6) has an outer circle of three sections of different-diameters, D1 outer diameter spool outer circles (6a) and D1 internal diameter valve openings
(8a) clearance fit, D2 outer diameter spool outer circles (6b) and D2 internal diameters valve opening (8b) clearance fit, D3 outer diameter spool outer circles (6c) with
D3 internal diameters valve opening (8c) clearance fit, diameter D1 are less than diameter D2, and diameter D2 is less than diameter D3, and the circular area of diameter D2 subtracts
Circular area of the difference equal to diameter D3 of the circular area of diameter D1 is gone to subtract the difference of the circular area of diameter D2, variable flow valve
Core (6) center is provided with the variable spool being made of radial through-hole and axial center hole and draws oilhole (6d), has been connected to variable valve pocket end
Hold cavity (8f) and shell internal cavity；
Variable spring (5), variable spool (6) and variable valve pocket (8) placed coaxial and it is respectively positioned on swash plate (1) homonymy, variable spool
(6) D1 outer diameters spool outer circle (6a) is nearest apart from variable spring (5) on.
2. the coaxial homonymy compact variant structural according to claim 1 suitable for two-way change displacement plunger pump, special
Sign is：The trunnion (1b) of swash plate (1) both sides is interference fitted with deep groove ball bearing (2) inner ring, deep groove ball bearing (2) outer ring
It is interference fitted with shell (12), swash plate (1) can be around trunnion (1b) axis oscillating.
3. the coaxial homonymy compact variant structural according to claim 1 suitable for two-way change displacement plunger pump, special
Sign is：Described variable spool link pin (3) one end has boss limit, the other end to have through-hole, gasket (14) endoporus and variable flow valve
Core link pin (3) coordinates, and gasket (14) is blocked in split pin (13) installation in through-holes.
4. the coaxial homonymy compact variant structural according to claim 1 suitable for two-way change displacement plunger pump, special
Sign is：Variable valve pocket (8) outer circle distributed three sections of o-ring grooves, and one O shape of placement is close in each o-ring groove
Seal (9), each O-ring seals (9) each side dispose a baffle ring (10) to seal A mouthfuls draw oily groove (8h) and
The B mouthfuls of pressure oils drawn in oily groove (8g).
5. the coaxial homonymy compact variant structural according to claim 1 suitable for two-way change displacement plunger pump, special
Sign is：D1 outer diameter spool outer circles (6a), D2 outer diameter spool outer circles (6b), the D3 outer diameter spool outer circles of the variable spool (6)
Balancing slit (6e) is provided on (6c).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610966596.XA CN106438255B (en) | 2016-10-28 | 2016-10-28 | Coaxial homonymy compact variant structural suitable for two-way change displacement plunger pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610966596.XA CN106438255B (en) | 2016-10-28 | 2016-10-28 | Coaxial homonymy compact variant structural suitable for two-way change displacement plunger pump |
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| Publication Number | Publication Date |
|---|---|
| CN106438255A CN106438255A (en) | 2017-02-22 |
| CN106438255B true CN106438255B (en) | 2018-08-07 |
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| CN201610966596.XA Active CN106438255B (en) | 2016-10-28 | 2016-10-28 | Coaxial homonymy compact variant structural suitable for two-way change displacement plunger pump |
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| CN108317118B (en) * | 2018-04-03 | 2021-04-30 | 浙江大学 | Buckle type split plunger pump swash plate variable adjusting mechanism and adjusting method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2003293944A (en) * | 2002-04-02 | 2003-10-15 | Nachi Fujikoshi Corp | Controller for variable displacement piston pump |
| CN200978783Y (en) * | 2006-11-02 | 2007-11-21 | 陕西航天动力高科技股份有限公司 | Electrohydraulic ratio variable piston pump |
| CN201539375U (en) * | 2009-12-14 | 2010-08-04 | 青岛力克川液压机械有限公司 | Control transformer of cam plate variable plunger pump |
| JP5982115B2 (en) * | 2011-11-25 | 2016-08-31 | Ｋｙｂ株式会社 | Swash plate type piston pump |
| DE102012022997A1 (en) * | 2012-11-24 | 2014-05-28 | Robert Bosch Gmbh | Adjustment device for a hydraulic machine and hydraulic axial piston machine |
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