CN108644083B - A kind of ultrahigh pressure axial plunger pump of two-stage pressure output - Google Patents
A kind of ultrahigh pressure axial plunger pump of two-stage pressure output Download PDFInfo
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- CN108644083B CN108644083B CN201810474147.2A CN201810474147A CN108644083B CN 108644083 B CN108644083 B CN 108644083B CN 201810474147 A CN201810474147 A CN 201810474147A CN 108644083 B CN108644083 B CN 108644083B
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- kidney
- plunger
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- inner ring
- outer ring
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Classifications
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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
- F04B1/20—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 having rotary cylinder block
- F04B1/22—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 having rotary cylinder block having two or more sets of cylinders or pistons
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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
- F04B1/26—Control
- F04B1/30—Control of machines or pumps with rotary cylinder blocks
- F04B1/303—Control of machines or pumps with rotary cylinder blocks by turning the valve plate
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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
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/007—Installations or systems with two or more pumps or pump cylinders, wherein the flow-path through the stages can be changed, e.g. from series to parallel
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The present invention discloses a kind of ultrahigh pressure axial plunger pump of two-stage pressure output, and main component is transmission shaft, valve plate, cylinder body, plunger, piston shoes, return plate, swash plate, shell etc..Two rows of plunger cavities are provided on cylinder body, inside and outside loop pillar plug is separately mounted in the inside and outside equally distributed plunger cavity of two rows of cylinder body.Valve plate side is matched with cylinder body flow end face, and the other side is fixed by positioning pin and back casing, is set on valve plate there are four kidney-shaped notch runner.Back casing is equipped with outer ring in-line, inner ring in-line, outer ring vent line, inner ring vent line, and four oil circuits are connected with four kidney-shaped notch runners on valve plate respectively.Pass through the design to oil circuit on back casing, including erection sequence valve and check valve, so that the present invention is realized following functions: being used as a kind of double-row type axial plunger pump when system pressure is lower than first class pressure, it is used as a kind of auto-pressurizing ultrahigh pressure axial plunger pump when system pressure is higher than first class pressure, the pressure rating of one times of pump is improved, to reach hyperpressure purpose.
Description
Technical field
The present invention relates to a kind of novel axial plunger pumps, more particularly to a kind of super-pressure axial columns of two-stage pressure output
Plug pump.
Background technique
Axial plunger pump is dynamical element important in hydraulic system, is widely used in industrial hydraulic and hydraulic neck of walking
Domain is one of most popular Hydraulic Elements in Modern hydraulic element.Further, since structure is complicated for axial plunger pump, to system
It is very high to make technique, the requirement of material, therefore it is one of very high Hydraulic Elements of technology content again.In recent years, with material,
The new technology of the development of the technologies such as manufacture, electronics, axial plunger pump emerges one after another.
When the operating pressure of hydraulic system is more than 32MPa, commonly referred to as ultrahigh-pressure hydraulic pressure.In modern science and technology
In field and industrial production, the application of ultrahigh-pressure hydraulic technology is more and more extensive.Currently, structure and the master of axial plunger pump
The factors such as intensity, the rigidity of components are wanted to affect the discharge capacity and output pressure of pump.For this purpose, the structure type of research plunger pump,
There is very important meaning to the discharge capacity and operating pressure that promote axial plunger pump.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of ultrahigh pressure axial plunger pump of two-stage pressure output, the axis
It is to achieve two-stage pressure output to the characteristics of plunger pump.
In order to solve above-mentioned technical problem, the present invention is achieved by the following technical solutions:
A kind of ultrahigh pressure axial plunger pump of two-stage pressure output, including main shaft, valve plate, cylinder body, plunger include inner ring
Plunger and outer ring plunger, piston shoes include interior piston shoes and outer piston shoes, return plate, swash plate, shell and back casing；Back casing installation is solid
It is scheduled on the right end of shell, the left side of main shaft is mounted on the left end of shell, main shaft by shaft block ring, rolling bearing and hole with retaining ring
Right side be mounted in the blind hole of back casing by axle sleeve and Nonlubricated bearing；Cylinder body is mounted on the main shaft of housing cavity,
Main shaft imparts power to cylinder body by spline, rotates cylinder body；
It includes n inner ring plunger cavity and n outer ring that cylinder body, which is equipped with around the 2n plunger cavity that cylinder body axis is uniform staggered with,
Plunger cavity, the interior first runner that is equipped with of each inner ring plunger cavity is led to outside cylinder body, logical equipped with second flow channel in each outer ring plunger cavity
To outside cylinder body；N inner ring plunger and n outer ring plunger are separately mounted in the inner ring plunger cavity and outer ring plunger cavity of cylinder body；Often
The head of a inner ring plunger is equipped with interior piston shoes, and interior piston shoes bottom surface is provided with grease chamber, and the pressure oil in the plunger pump is introduced it
In, so that thrust and the oil pressure in the grease chamber from inner ring plunger cavity is balanced each other；The head of each outer ring plunger is equipped with outer cunning
Boots, outer piston shoes bottom surface are provided with grease chamber, and the pressure oil in the plunger pump is introduced wherein, make thrust from outer ring plunger cavity with
Oil pressure in the grease chamber balances each other；Swash plate is fixed on the left side of housing cavity, the surface phase that swash plate cooperates with piston shoes
There is an inclination angle for cylinder body axis；The plunger pump pushes inner ring plunger and outer ring plunger by swash plate during pressure oil
It forces to retract, keeps inner ring plunger and outer ring plunger overhanging by return mechanism in oil-absorbing process；The return mechanism includes dish
Shape spring, adjusting pad, ball bowl and return plate, backhaul center hole and ball bowl spherical cooperate, and interior piston shoes and outer piston shoes are inserted respectively
On return plate in equally distributed round hole；Ball bowl is pressed to return plate by adjusting pad by disk spring, and then makes return plate
Be affixed to swash plate, return plate forces apparent motion of the bottom of interior piston shoes and outer piston shoes always close to swash plate, then by interior piston shoes and
Outer piston shoes force inner ring plunger and outer ring plunger backhaul；When cylinder body drives inner ring plunger and outer ring plunger rotates, inner ring plunger
It is enclosed in plunger cavity and outer ring plunger cavity inside respectively with outer ring plunger and makees straight reciprocating motion；
Valve plate is set there are four kidney-shaped window, respectively the first and second oil suction kidney-shaped window and the first and second oil extraction kidney-shaped window
Mouthful；Central spring is sleeved on main shaft in axle hole of cylinder block, and cylinder body is pressed to valve plate by washer, makes the side of valve plate
It is fitted closely with cylinder body flow end face, and opposite sliding；And in the other side of valve plate, back casing is fixed on by positioning pin
End face on；The circle that first oil suction kidney-shaped window and the first oil extraction kidney-shaped window are rotated in the inner ring plunger cavity first runner of cylinder body
On all tracks, circle that the second oil suction kidney-shaped window and the second oil extraction kidney-shaped window are rotated in the outer ring plunger cavity second flow channel of cylinder body
On all tracks；
The first kidney-shaped notch runner is equipped with as inner ring in-line in the lower half of back casing, and the second kidney-shaped notch runner is made
For outer ring in-line；Third kidney-shaped notch runner is equipped with as inner ring vent line, the 4th kidney-shaped notch in the upper half of back casing
Runner is as outer ring vent line；First kidney-shaped notch runner and third kidney-shaped notch runner respectively with the first oil suction on valve plate
Kidney-shaped window and the first oil extraction kidney-shaped window are connected, the second kidney-shaped notch runner and the 4th kidney-shaped notch runner respectively with flow
The second oil suction kidney-shaped window and the second oil extraction kidney-shaped window on disk are connected；Second kidney-shaped notch runner is as outer ring in-line
Connect fuel tank；4th kidney-shaped notch runner connects work system by the second sequence valve as outer ring vent line；First kidney-shaped notch
Runner is equipped with check valve, external oil-supplementing system in runner as inner ring in-line；Third kidney-shaped notch runner is as inner ring
Vent line connects with work system；Two hydraulic fluid ports, the first kidney-shaped notch runner and the 4th kidney-shaped notch stream are opened in back casing bottom
Road is connected, and the first sequence valve is equipped between the two runners.
A kind of ultrahigh pressure axial plunger pump of two-stage pressure output of the invention, the first sequence valve are high pressure opening, low pressure
It closes；Second sequence valve is low pressure opening, and high pressure is closed.When system pressure is lower than first class pressure, the oil liquid of outer ring vent line
Since pressure is lower than the cracking pressure of the first sequence valve, so work system can only be directly entered by the second sequence valve；When being
When pressure of uniting is higher than first class pressure, the second sequence valve is closed under high pressure, and the pressure oil of outer ring vent line passes through the first sequence valve
Into inner ring in-line, secondary pressurized is carried out.
Above-mentioned novel axial plunger pump, when work system pressure is lower than first class pressure, the oil liquid of outer ring vent line is straight
It taps into work system, to prevent the plunger pump inner ring friction is secondary from dry grinding phenomenon occur, from oil-supplementing system to inner ring in-line
Fuel feeding enters work system through inner ring oil outlet after enclosing plunger cavity pressurization inside.
Due to the adoption of the above technical scheme, the ultrahigh pressure axial plunger pump of a kind of two-stage pressure output provided by the invention,
Have compared with prior art it is such the utility model has the advantages that
Plunger pump of the present invention can be realized two-stage pressure output, be not only suitable for low pressure huge discharge operating condition, and can be applicable in
In super-pressure operating condition.When work system pressure is lower than first class pressure, the present invention is used as a kind of double-row type axial plunger pump, i.e. phase
When in two axial plunger pump parallel connections, to work system fuel feeding；When work system pressure is higher than first class pressure, the present invention is used as
A kind of auto-pressurizing ultrahigh pressure axial plunger pump, internal oil passages series connection, improves the pressure rating of one times of pump.
Detailed description of the invention
Fig. 1 is a kind of ultrahigh pressure axial plunger pump stereoscopic schematic diagram of two-stage pressure output of the present invention；
Fig. 2 is a kind of ultrahigh pressure axial plunger pump pump schematic diagram of spindle side of two-stage pressure output of the present invention；
Fig. 3 is the sectional view of line A-A in Fig. 2；
Fig. 4 is the sectional view of line B-B in Fig. 2；
Fig. 5 is return mechanism enlarged drawing；
In Fig. 6: being (a) back casing flow end view, be (b) line A-A sectional view in (a), be (c) cylinder body of the present invention
Upper plug chamber distribution schematic diagram；
Fig. 7 is valve plate schematic diagram；
In Fig. 8: being (a) back casing outer ring oil inlet schematic diagram, be (b) back casing flow end view of the present invention, (c)
It is back casing oil circuit schematic diagram of the present invention, is (d) back casing bottom end face schematic diagram of the present invention, is (e) in back casing of the present invention
Hydraulic fluid port schematic diagram is irised out, is (f) back casing outer ring oil outlet schematic diagram of the present invention, is (g) back casing oil circuit schematic diagram of the present invention,
It (h) is back casing inner ring oil inlet schematic diagram of the present invention；
In Fig. 9: being (a) back casing oil circuit schematic diagram of the present invention, be (b) back casing oil circuit schematic diagram of the present invention.
In figure: 1- main shaft, 2- outside framework oil seal, the hole 3- retaining ring, 4- pin, 5- shell, 6- swash plate, 7- adjusting pad,
8- disk spring, 9- return plate, 10- inner ring plunger, 11- cylinder body, 12- pin, 13-O type circle, 14- back casing, 15-O
Type circle, 16- spring washer, 17- screw, 18- axle sleeve, 19- Nonlubricated bearing, 20- valve plate, the hole 21- retaining ring,
22- washer, 23- spring, the outer ring 24- plunger, 25- ball bowl, the outer piston shoes of 26-, piston shoes in 27-, 28- shaft block ring,
29- rolling bearing, 111- inner ring plunger cavity, the outer ring 112- plunger cavity, 113- first runner, 114- second flow channel,
201- the second oil suction kidney-shaped window (outer ring oil suction kidney-shaped window), 202- the first oil suction kidney-shaped window (inner ring oil suction kidney-shaped window
Mouthful), 203- the first oil extraction kidney-shaped window (inner ring oil extraction kidney-shaped window), 204- the second oil extraction kidney-shaped window (outer ring oil extraction waist
Shape window), 141- the second kidney-shaped notch runner (outer ring in-line), 142- the first kidney-shaped notch runner (inner ring in-line),
143- third kidney-shaped notch runner (inner ring vent line), the 4th kidney-shaped notch runner (outer ring vent line) of 144-, 301- is unidirectional
Valve, the first sequence valve of 302-, the second sequence valve of 303-.
Specific embodiment
Present invention is further described in detail with specific embodiment with reference to the accompanying drawing:
It is of the invention to reach the technical means and efficacy that predetermined goal of the invention is taken further to illustrate, below in conjunction with
A kind of specific embodiment of novel axial plunger pump proposed according to the present invention, feature and its effect is described in detail in attached drawing
It is as follows.
A kind of ultrahigh pressure axial plunger pump of two-stage pressure output of the invention as shown in Fig. 1~5, including main shaft 1, is matched
Flow table 20, cylinder body 11, plunger, piston shoes, return plate 9, swash plate 6, shell 5 and back casing 14；The plunger includes inner ring plunger 10
With outer ring plunger 24；The piston shoes include interior piston shoes 27 and outer piston shoes 26；Back casing 14 is fixed on shell 5 by screw
Right end, the left side of main shaft 1 are mounted on the left end of shell 5 by shaft block ring 28, rolling bearing 29 and hole retaining ring 3, main shaft 1
Right side is mounted in the blind hole of back casing 14 by axle sleeve 18 and Nonlubricated bearing 19；Cylinder body 11 is mounted on 5 inner cavity of shell
On main shaft 1, main shaft 1 imparts power to cylinder body 11 by spline, rotates cylinder body 11；
In Fig. 4, Fig. 6 shown in (b) and (c), cylinder body 11 is equipped with ten plunger cavities being uniform staggered with around cylinder body axis,
Including in five inner ring plunger cavities 111 and five outer ring plunger cavities 112；First runner 113 is equipped in each inner ring plunger cavity 111
It leads to outside cylinder body 11, is equipped with second flow channel 114 in each outer ring plunger cavity 112 and leads to outside cylinder body 11；Five 10 Hes of inner ring plunger
Five outer ring plungers 24 are separately mounted in the inner ring plunger cavity 111 and outer ring plunger cavity 112 of cylinder body 11；Each inner ring plunger 10
Head interior piston shoes 27 are installed, interior 27 bottom surface of piston shoes is provided with grease chamber, by the plunger pump pressure oil introduce wherein, make come
It balances each other from the thrust of inner ring plunger cavity with the oil pressure in the grease chamber；The head of each outer ring plunger 24 is equipped with outer piston shoes 26,
Outer 26 bottom surface of piston shoes is provided with grease chamber, and the pressure oil in the plunger pump is introduced wherein, make thrust from outer ring plunger cavity with
Oil pressure in the grease chamber balances each other；Swash plate 6 is fixed on the left side of 5 inner cavity of shell by positioning pin 4, swash plate 6 and cunning
There is an inclination angle on the surface of boots cooperation relative to 11 axis of cylinder body；The plunger pump pushes during pressure oil by swash plate 6
Inner ring plunger 10 and outer ring plunger 24 are forced to retract, and make inner ring plunger 10 and outer ring plunger by return mechanism in oil-absorbing process
24 is overhanging；The return mechanism, as shown in Fig. 3, Fig. 4 and Fig. 5, including disk spring 8, adjusting pad 7, ball bowl 25 and return plate 9,
9 centre bore of return plate and the cooperation of 25 spherical of ball bowl, interior piston shoes 27 and outer piston shoes 26 are respectively inserted in equally distributed on return plate 9
In round hole；Ball bowl 25 is pressed to return plate 9 by adjusting pad 7 by disk spring 8, and then return plate 9 is made to be affixed to swash plate 6, backhaul
Disk 9 forces the bottom of interior piston shoes 27 and outer piston shoes 26 always close to the apparent motion of swash plate 6, then passes through interior piston shoes 27 and outer piston shoes
26 force inner ring plunger 10 and 24 backhaul of outer ring plunger；When cylinder body drives inner ring plunger 10 and outer ring plunger 24 rotates, inner ring
Plunger 10 and outer ring plunger 24 enclose in plunger cavity 111 and outer ring plunger cavity 112 inside respectively makees straight reciprocating motion；Such as Fig. 7 institute
Show, valve plate 20 is set there are four kidney-shaped window, respectively the first and second oil suction kidney-shaped window 202 and 201 and the first and second oil extraction
Kidney-shaped window 203 and 204；As shown in figure 4, central spring 23 is sleeved on main shaft 1 in 11 axis hole of cylinder body, and pass through washer 22
Cylinder body 11 is pressed to valve plate 20, fits closely the side of valve plate 20 and 11 flow end face of cylinder body, and opposite sliding；And
In the other side of valve plate 20, it is fixed on by positioning pin 12 on the end face of back casing 14；First oil suction kidney-shaped window 202 and
One oil extraction kidney-shaped window 203 is on the circular path that 111 first runner 113 of inner ring plunger cavity of cylinder body 11 rotates, the second oil suction
The circumference that kidney-shaped window 201 and the second oil extraction kidney-shaped window 204 are rotated in 112 second flow channel 114 of outer ring plunger cavity of cylinder body 11
On track；
As shown in (a) and (b) in Fig. 9, it is equipped in the conduct of the first kidney-shaped notch runner 142 in the lower half of back casing 14
In-line is enclosed, the second kidney-shaped notch runner 141 is used as outer ring in-line；Third kidney-shaped notch is equipped in the upper half of back casing 14
Runner 143 is used as inner ring vent line, and the 4th kidney-shaped notch runner 144 is used as outer ring vent line；First kidney-shaped notch runner, 142 He
Third kidney-shaped notch runner 143 respectively with the first oil suction kidney-shaped window 202 and the first oil extraction kidney-shaped window 203 on valve plate 20
Be connected, the second kidney-shaped notch runner 141 and the 4th kidney-shaped notch runner 144 respectively with the second oil suction kidney-shaped on valve plate 20
Window 201 is connected with the second oil extraction kidney-shaped window 204；Second kidney-shaped notch runner 141 connects fuel tank as outer ring in-line；
4th kidney-shaped notch runner 144 connects work system by the second sequence valve 303 as outer ring vent line；First kidney-shaped notch runner
142 are used as inner ring in-line, are equipped with check valve 301, external oil-supplementing system in runner；Third kidney-shaped notch runner 143 is made
Connect for inner ring vent line with work system；Two hydraulic fluid ports, the first kidney-shaped notch runner 142 and the 4th are opened in 14 bottom of back casing
Kidney-shaped notch runner 144 is connected, and the first sequence valve 302 is equipped between the two runners.
When work system pressure be lower than first class pressure when, as shown in fig. 6, oil-supplementing system to pump inner ring plunger cavity fuel feeding.Cylinder
Body main shaft drive under start to rotate, intake side two rows plunger cavity volume constantly expands, in this course outer ring plunger cavity from
Oil liquid is sucked in fuel tank, inner ring plunger cavity feeds oil liquid by oil-supplementing system.Continue to rotate with cylinder body, pact of the plunger in swash plate
Start to retract under beam, inside and outside circle plunger cavity volume constantly reduces, and the pressure oil that outer ring plunger cavity generates enters through outer ring vent line
Work system, and the pressure oil that inner ring plunger cavity generates enters work system through inner ring vent line.
In this course, oil liquid pressure is lower than first class pressure, and the first sequence valve is constantly in closed state, the second sequence
Valve is in the open state.At this point, the present invention is used as a kind of double-row type axial plunger pump, that is, two axial plunger pumps are simultaneously
Connection, to work system fuel feeding.
When the pressure needed for work system is higher than first class pressure, oil-supplementing system stops inwardly circle plunger cavity fuel feeding.Novel shaft
To after plunger pump startup, oil liquid enters in the plunger cavity of outer ring from fuel tank, and after level-one is pressurizeed, pressure oil enters through the first sequence valve
Inner ring plunger cavity, after secondary pressurized, super-pressure oil liquid enters work system through inner ring vent line.
In this course, the second sequence valve is closed under high pressure, and first class pressure oil not can enter work system；First is suitable
Sequence valve is opened under the action of first class pressure oil.In this case, the present invention is used as a kind of auto-pressurizing ultrahigh pressure axial plunger
Pump, internal oil passages series connection make the pressure change for exporting oil liquid, the pressure rating of one times of the plunger pump are improved, to reach super
High pressure purpose.
1. the path of present invention work hydraulic oil in double-row type axial plunger pump state are as follows:
Fuel tank → outer ring in-line → outer ring plunger cavity → outer ring vent line → second sequence valve → work system；
Oil-supplementing system → check valve → inner ring in-line → inner ring plunger cavity → inner ring vent line → work system.
2. the path of present invention work hydraulic oil in auto-pressurizing ultrahigh pressure axial plunger pump state are as follows:
Fuel tank → outer ring in-line → outer ring plunger cavity → first sequence valve → inner ring plunger cavity → inner ring vent line → work
Make system.
Claims (1)
1. a kind of ultrahigh pressure axial plunger pump of two-stage pressure output, it is characterised in that: including main shaft, valve plate, cylinder body, plunger
It include interior piston shoes and outer piston shoes, return plate, swash plate, shell and back casing including inner ring plunger and outer ring plunger, piston shoes；Rear shell
Body is fixed on the right end of shell, and the left side of main shaft is mounted on shell with retaining ring by shaft block ring, rolling bearing and hole
The right side of left end, main shaft is mounted in the blind hole of back casing by axle sleeve and Nonlubricated bearing；Cylinder body is mounted on housing cavity
Main shaft on, main shaft imparts power to cylinder body by spline, rotates cylinder body；
It includes n inner ring plunger cavity and n outer ring plunger that cylinder body, which is equipped with around the 2n plunger cavity that cylinder body axis is uniform staggered with,
Chamber, the interior first runner that is equipped with of each inner ring plunger cavity lead to outside cylinder body, second flow channel are equipped in each outer ring plunger cavity and leads to cylinder
In vitro；N inner ring plunger and n outer ring plunger are separately mounted in the inner ring plunger cavity and outer ring plunger cavity of cylinder body；In each
The head of loop pillar plug is equipped with interior piston shoes, and interior piston shoes bottom surface is provided with grease chamber, and the pressure oil in the plunger pump is introduced wherein, is made
Thrust from inner ring plunger cavity balances each other with the oil pressure in the grease chamber；The head of each outer ring plunger is equipped with outer piston shoes, outside
Piston shoes bottom surface is provided with grease chamber, and the pressure oil in the plunger pump is introduced to the thrust and the oil wherein made from outer ring plunger cavity
Oil pressure in room balances each other；Swash plate is fixed on the left side of housing cavity, swash plate and piston shoes cooperation surface relative to
Cylinder body axis has an inclination angle；The plunger pump pushes inner ring plunger and outer ring plunger to force during pressure oil by swash plate
It retracts, keeps inner ring plunger and outer ring plunger overhanging by return mechanism in oil-absorbing process；The return mechanism includes dish-shaped bullet
Spring, adjusting pad, ball bowl and return plate, backhaul center hole and ball bowl spherical cooperate, and interior piston shoes and outer piston shoes are respectively inserted in back
On journey disk in equally distributed round hole；Ball bowl is pressed to return plate by adjusting pad by disk spring, and then is affixed to return plate
Swash plate, return plate forces apparent motion of the bottom of interior piston shoes and outer piston shoes always close to swash plate, then passes through interior piston shoes and outer cunning
Boots force inner ring plunger and outer ring plunger backhaul；When cylinder body drives inner ring plunger and outer ring plunger to rotate, inner ring plunger and outer
Loop pillar plug encloses in plunger cavity and outer ring plunger cavity inside respectively makees straight reciprocating motion；
Valve plate is set there are four kidney-shaped window, respectively the first and second oil suction kidney-shaped window and the first and second oil extraction kidney-shaped window；
Central spring is sleeved on main shaft in axle hole of cylinder block, and cylinder body is pressed to valve plate by washer, make valve plate side and
Cylinder body flow end face fits closely, and opposite sliding；And in the other side of valve plate, back casing is fixed on by positioning pin
On end face；The circumference that first oil suction kidney-shaped window and the first oil extraction kidney-shaped window are rotated in the inner ring plunger cavity first runner of cylinder body
On track, circumference that the second oil suction kidney-shaped window and the second oil extraction kidney-shaped window are rotated in the outer ring plunger cavity second flow channel of cylinder body
On track；
The first kidney-shaped notch runner is equipped with as inner ring in-line in the lower half of back casing, and the second kidney-shaped notch runner is as outer
Enclose in-line；Third kidney-shaped notch runner is equipped with as inner ring vent line, the 4th kidney-shaped notch runner in the upper half of back casing
As outer ring vent line；First kidney-shaped notch runner and third kidney-shaped notch runner respectively with the first oil suction kidney-shaped on valve plate
Window and the first oil extraction kidney-shaped window are connected, and the second kidney-shaped notch runner and the 4th kidney-shaped notch runner are respectively and on valve plate
The second oil suction kidney-shaped window and the second oil extraction kidney-shaped window be connected；Second kidney-shaped notch runner is connected as outer ring in-line
Fuel tank；4th kidney-shaped notch runner connects work system by the second sequence valve as outer ring vent line；First kidney-shaped notch runner
As inner ring in-line, check valve, external oil-supplementing system are installed in runner；Third kidney-shaped notch runner is fuel-displaced as inner ring
Road connects with work system；Two hydraulic fluid ports, the first kidney-shaped notch runner and the 4th kidney-shaped notch runner phase are opened in back casing bottom
Connection, and the first sequence valve is installed between the two runners；First sequence valve is high pressure opening, and low pressure is closed；Second is suitable
Sequence valve is low pressure opening, and high pressure is closed；When system pressure is lower than first class pressure, the oil liquid of outer ring vent line is lower than due to pressure
The cracking pressure of first sequence valve can only be directly entered work system by the second sequence valve；When system pressure is higher than level-one pressure
When power, the second sequence valve is closed under high pressure, and the pressure oil of outer ring vent line enters inner ring in-line by the first sequence valve, into
Row secondary pressurized.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810474147.2A CN108644083B (en) | 2018-05-17 | 2018-05-17 | A kind of ultrahigh pressure axial plunger pump of two-stage pressure output |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810474147.2A CN108644083B (en) | 2018-05-17 | 2018-05-17 | A kind of ultrahigh pressure axial plunger pump of two-stage pressure output |
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| Publication Number | Publication Date |
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| CN108644083A CN108644083A (en) | 2018-10-12 |
| CN108644083B true CN108644083B (en) | 2019-08-23 |
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| CN110067714A (en) * | 2019-03-13 | 2019-07-30 | 钟彪 | A kind of axial plunger pump or motor |
| CN110064306B (en) * | 2019-04-19 | 2024-03-12 | 天津大学 | Energy recovery device |
| CN110657077B (en) * | 2019-10-23 | 2021-08-06 | 四川航天烽火伺服控制技术有限公司 | Gear-meshing type flow distribution device |
| CN112555116B (en) * | 2020-12-10 | 2021-07-06 | 山东泰丰智能控制股份有限公司 | High-pressure plunger pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3127610A1 (en) * | 1980-07-15 | 1983-01-20 | Linde Ag, 6200 Wiesbaden | Axial-piston pump for two delivery streams |
| JPH0458070A (en) * | 1990-06-27 | 1992-02-25 | Hitachi Constr Mach Co Ltd | Hydraulic pressure rotating machine |
| JPH04109079A (en) * | 1990-08-29 | 1992-04-10 | Daikin Ind Ltd | Variable displacement axial piston machine |
| JP2767672B2 (en) * | 1992-09-07 | 1998-06-18 | 油研工業株式会社 | Hydraulic flow rate tuning device |
| US7165396B2 (en) * | 2003-07-11 | 2007-01-23 | Eaton Corporation | Pump control override for tandem pumps |
| CN201818450U (en) * | 2010-10-21 | 2011-05-04 | 吴赛珍 | Compact high-pressure plunger piston variable dual-pump |
| CN206092304U (en) * | 2016-10-17 | 2017-04-12 | 北京华德液压工业集团有限责任公司 | Ultrahigh pressure axial plunger pump |
| CN107061212B (en) * | 2017-04-20 | 2019-04-30 | 太原理工大学 | A kind of four hydraulic fluid port shaft orientation plunger variable pump of low noise parallel connection distributing construction |
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2018
- 2018-05-17 CN CN201810474147.2A patent/CN108644083B/en active Active
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| CN108644083A (en) | 2018-10-12 |
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