CN105402101A - Double-output axial plunger pump - Google Patents
Double-output axial plunger pump Download PDFInfo
- Publication number
- CN105402101A CN105402101A CN201510985286.8A CN201510985286A CN105402101A CN 105402101 A CN105402101 A CN 105402101A CN 201510985286 A CN201510985286 A CN 201510985286A CN 105402101 A CN105402101 A CN 105402101A
- Authority
- CN
- China
- Prior art keywords
- cylinder body
- low pressure
- pressure cylinder
- swash plate
- high pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
-
- 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
- F04B1/2014—Details or component parts
- F04B1/2042—Valves
-
- 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
- F04B1/2014—Details or component parts
- F04B1/2078—Swash plates
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention discloses a double-output axial plunger pump. The double-output axial plunger pump comprises a plunger pump body and a control valve assembly, wherein the plunger pump body is connected with the control valve assembly through a connecting bolt; the plunger pump body comprises a pump body, a pump cover, high-pressure cylinder bodies, lower-pressure cylinder bodies, a cylinder body fixing frame and a main shaft; and the control valve assembly comprises a control valve body, an oil draining opening and two output oil paths are arranged on the control valve body, one group of high-pressure cylinder bodies are connected with one group of lower-pressure cylinder bodies perpendicular to the high-pressure cylinder bodies through one output oil path, and the other group of high-pressure cylinder bodies are connected with the other group of lower-pressure cylinder bodies through the other output oil path. The double-output axial plunger pump is simple in structure, is high in output pressure, and can provide two paths of output, thereby better meeting production requirements.
Description
Technical field
The present invention relates to plunger pump technique field, particularly relate to a kind of dual output axial piston pump.
Background technique
Axial piston pump is the power source of high-pressure and hydraulic transmission, and axial piston pump is that multiple plunger coordinates with the cylinder bore at circumference uniform distribution, and plunger center line and cylinder center line are overlapped.When cylinder body rotates, by certain mechanism, plunger is done relatively reciprocating motion in cylinder bore, realized the function of oil suction and oil extraction by the mode such as oil distribution casing or Flat valve.
Conventional axial piston pump generally comprises oil distribution casing, cylinder body, plunger, main shaft and swash plate, and wherein swash plate and oil distribution casing maintain static, and main shaft rotates, thus drives cylinder body to rotate together with the plunger in cylinder body; Its volume is comparatively large, and delivery pressure is lower.As patent CN102619715B, push return plate as the central spring supported by steel ball using cylinder body, piston shoes are tightly pressed on swash plate by return plate, and plunger center is provided with retracting spring; Rotate a circle at main shaft, each plunger reciprocates once, completes an oil suction and oil extraction process, and its plunger uses spring return.Also have patent CN103147952A to eliminate retracting spring, principle is two-step supercharging, and low pressure gear pump is to the filler opening fuel feeding of plunger pump, force plunger backhaul with the pressure of low pressure oil supply, though cancel retracting spring, need low pressure gear pump be configured, complicated integral structure, cost is higher.
In addition, existing axial piston pump all can only provide a road to export, thus cannot meet the industrial demand of modernization.
Summary of the invention
For prior art above shortcomings, the object of the invention is to how to solve existing axial piston pump output circuit few, delivery pressure is low, complex structure, and the problem that cost is high, provide a kind of dual output axial piston pump, structure is simple, delivery pressure is high, and two-way can be provided to export, thus more meets Production requirement.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is such: a kind of dual output axial piston pump, is characterized in that: comprise plunger pump body and control valve assembly, and this plunger pump body and control valve assembly are connected together by connecting bolt;
Described plunger pump body comprises the pump housing, pump cover, high pressure cylinder body, low pressure cylinder body, cylinder body fixing frame and main shaft, described high pressure cylinder body and low pressure cylinder body everybody 4, the pump housing is provided with high pressure cylinder body mounting hole and low pressure cylinder body mounting hole, described high pressure cylinder body and low pressure cylinder body correspondence are installed in high pressure cylinder body mounting hole and low pressure cylinder body mounting hole, and be fixed on the pump housing by cylinder body fixing frame, wherein, high pressure cylinder body and low pressure (LP) cylinder body are positioned at circumferentially same, 4 high pressure cylinder bodies and 4 low pressure cylinder bodies are divided into two groups respectively, often organizing high pressure cylinder body and often organizing low pressure cylinder body lays respectively in same radial direction, and two of two groups of high pressure cylinder body places diameters are vertical with two diameters at two groups of low pressure cylinder body places respectively, described pump cover is fixedly connected with cylinder body fixing frame, and between pump cover, cylinder body fixing frame and the pump housing, form an airtight oil pocket, described high pressure cylinder body is equipped with on low pressure cylinder body the through hole be connected with this oil pocket, below the through hole of high pressure cylinder body and low pressure cylinder body, be respectively equipped with high pressure check valve and low pressure check valve, in high pressure cylinder body and low pressure cylinder body, be respectively equipped with high-pressure plunger and low-pressure plunger, the upper end of described high-pressure plunger and low-pressure plunger is provided with connecting ball head, the pump housing is also provided with a pump housing filler opening and two pump housing oil outlets, and described pump housing filler opening is connected with oil pocket by oil duct, and the bottom of two groups of high pressure cylinder bodies is connected with two pump housing oil outlets respectively by oil duct,
Described main shaft runs through pump cover, cylinder body fixing frame and the pump housing from top to bottom, and is connected with the pump housing with pump cover by positioning bearing; Large swash plate, little swash plate, retainer and piston shoes are provided with between cylinder rack and pump cover, described large swash plate and little swash plate all sheathed and be fixed on main shaft, wherein, large swash plate is positioned at above little swash plate, the two sides that large swash plate is adjacent with little swash plate is inclined-plane, and two inclined-planes are parallel to each other; Described retainer is between large swash plate and little swash plate, and this retainer place plane is parallel with the inclined-plane of little swash plate with large swash plate; On retainer, the position of corresponding high-pressure plunger and low-pressure plunger is provided with piston shoes mounting hole, described piston shoes are installed in piston shoes mounting hole, the first thrust-bearing is provided with between retainer and the inclined-plane of little swash plate, between piston shoes and the inclined-plane of large swash plate, be provided with the second thrust-bearing, thus realize the relative positioning of large swash plate, piston shoes, retainer and little swash plate; The downside of these piston shoes has ball-type hole, and piston shoes are hinged by the connecting ball head of this ball-type hole and high-pressure plunger and low-pressure plunger upper end, and can energizes high-pressure plunger and low-pressure plunger move up and down;
Described control valve assembly comprises control valve body, control valve body is provided with a drain tap and two output circuits, one group of high pressure cylinder body is connected with an output circuit with one group of vertical with it low pressure cylinder body, and another group high pressure cylinder body is connected with another output circuit with another group low pressure cylinder body;
Described output circuit comprises high-pressure overflow valve, low pressure relief valve and safety valve, and the flow-off of this high-pressure overflow valve, low pressure relief valve and safety valve is all connected with drain tap; Control valve body is provided with a grease chamber, described grease chamber has low pressure filler opening, low pressure oil outlet and high pressure filler opening, the filler opening of described low pressure relief valve is connected with this grease chamber, the filler opening of low pressure relief valve and high pressure filler opening are positioned at the two ends of grease chamber, and low pressure filler opening, low pressure oil outlet are positioned at the relative both sides of grease chamber; In this grease chamber, be provided with a draining one-way valve, described draining one-way valve is between the filler opening and the low pressure filler opening of grease chamber of low pressure relief valve; A push rod is provided with in grease chamber, one end of described push rod and one-way valve are just right, can by draining one-way valve reverse opening by this push rod, are provided with a piston at push rod away from one end of draining one-way valve, this piston and grease chamber are slidably matched, and piston is between high pressure filler opening and low pressure filler opening; Wherein the bottom of one group of low pressure cylinder body is connected with grease chamber's low pressure filler opening by oil duct, and the low pressure oil outlet of this grease chamber is connected with a pump housing oil outlet; The bottom of the one group high pressure cylinder body vertical with this group low pressure cylinder body is connected with the high pressure filler opening of high-pressure overflow valve, safety valve, grease chamber and the low pressure filler opening of position, grease chamber by oil duct simultaneously.
Further, described control valve body is connected by transitional connection pipe with the oil duct of the joint of the pump housing.
Further, large swash plate is connected with main shaft by the transmission screw that laterally runs through main shaft, and shallow bid is connected with main shaft by locking ball.
Further, between the upper side and pump cover of large swash plate, the 3rd thrust-bearing is provided with.
Further, the pump housing is also provided with two pump housing return openings, two pump housing return openings are all connected with oil pocket.
Compared with prior art, tool of the present invention has the following advantages:
1. structural configuration of the present invention is compact, compact.
2. the converting rotary motion of main shaft is seesawing of plunger by large swash plate and little swash plate by the present invention, and eliminate retracting spring structure, can not produce spring fatigue fracture, working stability is better.
3. cancel thrust plate in conventional construction, decrease friction pair, structure is simpler.
4. the present invention has two groups of independently oil circuit outputs, and often group high pressure and low-pressure section are mutually right angle, ensure by equilibrium of forces.
5. integrating control valve member of the present invention, realize high-pressure low-flow, low pressure and mass flow export, meet tool equipment when not exerting oneself Large travel range and exert oneself time thin tail sheep needs.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is plan view of the present invention.
Fig. 3 be Fig. 1 along A-A to sectional view.
Fig. 4 be Fig. 3 along B-B to sectional view.
Fig. 5 be Fig. 1 along C-C to cut open after plan view.
Fig. 6 is the linkage structure schematic diagram of plunger pump body and control valve assembly.
In figure: 1-pump housing, 2-pump cover, 3-high pressure cylinder body, 4-low pressure cylinder body, 5-cylinder body fixing frame, 6-main shaft, 7-high-pressure plunger, 8-low-pressure plunger, 9-connecting ball head, 10-large swash plate, 11-little swash plate, 12-retainer, 13-piston shoes, 14-the first thrust-bearing, 15-the second thrust-bearing, 16-control valve body, 17-high-pressure overflow valve, 18-low pressure relief valve, 19-safety valve, 20-grease chamber, 21-draining one-way valve, 22-push rod, 23-piston, 24-transmission screw, 25-locking ball, 26-the three thrust-bearing, 27-pump housing filler opening, 28-pump housing oil outlet, 29-drain tap, 30-pump housing return opening.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
Embodiment: see Fig. 1 to Fig. 6, a kind of dual output axial piston pump, comprises plunger pump body and control valve assembly, and this plunger pump body and control valve assembly are connected together by connecting bolt.
Described plunger pump body comprises the pump housing 1, pump cover 2, high pressure cylinder body 3, low pressure cylinder body 4, cylinder body fixing frame 5 and main shaft 6.Described high pressure cylinder body 3 and low pressure cylinder body 4 everybody 4, the pump housing 1 is provided with high pressure cylinder body 3 mounting hole and low pressure cylinder body 4 mounting hole, described high pressure cylinder body 3 and low pressure cylinder body 4 correspondence are installed in high pressure cylinder body 3 mounting hole and low pressure cylinder body 4 mounting hole, and are fixed on the pump housing 1 by cylinder body fixing frame 5.Wherein, high pressure cylinder body 3 and low pressure cylinder body 4 are positioned at circumferentially same, 4 high pressure cylinder bodies 3 and 4 low pressure cylinder bodies 4 are divided into two groups of (first group of high pressure cylinder bodies 3 respectively, second group of high pressure cylinder body 3, first group of low pressure cylinder body 4 and second group of low pressure cylinder body 4), often organizing high pressure cylinder body 3 and often organizing low pressure cylinder body 4 lays respectively in same radial direction, and two diameters at two groups of high pressure cylinder body 3 places are vertical with two diameters at two groups of low pressure cylinder body 4 places respectively, and (that is: the diameter at first group of high pressure cylinder body 3 place is vertical with the diameter at first group of low pressure cylinder body 4 place, the diameter at second group of high pressure cylinder body 3 place is vertical with the diameter at second group of low pressure cylinder body 4 place).
Described pump cover 2 is fixedly connected with cylinder body fixing frame 5, and between pump cover 2, cylinder body fixing frame 5 and the pump housing 1, form an airtight oil pocket, described high pressure cylinder body 3 is equipped with on low pressure cylinder body 4 through hole be connected with this oil pocket, below the through hole of high pressure cylinder body 3 and low pressure cylinder body 4, be respectively equipped with high pressure check valve and low pressure check valve, hydraulic oil can flow through high pressure check valve and low pressure check valve from top to bottom.In high pressure cylinder body 3 and low pressure cylinder body 4, be respectively equipped with high-pressure plunger 7 and low-pressure plunger 8, the upper end of described high-pressure plunger 7 and low-pressure plunger 8 is provided with connecting ball head 9.The pump housing 1 is also provided with pump housing filler opening 27 and two pump housing oil outlet 28(first pump housing oil outlet 28 and second pump housing oil outlets 28), described pump housing filler opening 27 is connected with oil pocket by oil duct, and the bottom of two groups of high pressure cylinder bodies 3 is connected with two pump housing oil outlets 28 respectively by oil duct; The pump housing 1 is also provided with two pump housing return opening 30, two pump housing return openings 30 be all connected with oil pocket.
Described main shaft 6 runs through pump cover 2, cylinder body fixing frame 5 and the pump housing 1 from top to bottom, and is connected with the pump housing 1 with pump cover 2 by positioning bearing; During concrete enforcement, large swash plate 10 is connected with main shaft 6 by the transmission screw 24 that laterally runs through main shaft 6, and shallow bid is connected with main shaft 6 by locking ball 25.Large swash plate 10, little swash plate 11, retainer 12 and piston shoes 13 are provided with between cylinder rack and pump cover 2, described large swash plate 10 and little swash plate 11 all sheathed and be fixed on main shaft 6, wherein, large swash plate 10 is positioned at above little swash plate 11, the two sides that large swash plate 10 is adjacent with little swash plate 11 is inclined-plane, and two inclined-planes are parallel to each other.Described retainer 12 is between large swash plate 10 and little swash plate 11, and this retainer 12 place plane is parallel with the inclined-plane of little swash plate 11 with large swash plate 10.On retainer 12, the position of corresponding high-pressure plunger 7 and low-pressure plunger 8 is provided with piston shoes 13 mounting hole, described piston shoes 13 are installed in piston shoes 13 mounting hole, the first thrust-bearing 14 is provided with between retainer 12 and the inclined-plane of little swash plate 11, between piston shoes 13 and the inclined-plane of large swash plate 10, be provided with the second thrust-bearing 15, thus realize the relative positioning of large swash plate 10, piston shoes 13, retainer 12 and little swash plate 11; By the cooperation of large swash plate 10 and little swash plate 11 and the first thrust-bearing 14 and the second thrust-bearing 15, retainer 12 and piston shoes 13 are fixedly clamped; Not only easier for installation, and locating effect is better, thus plunger pump stability in the course of the work can be ensured.Between the upper side and pump cover 2 of large swash plate 10, be provided with the 3rd thrust-bearing 26, thus make stability in large swash plate 10 working procedure better.The downside of these piston shoes 13 has ball-type hole, and piston shoes 13 are hinged by the connecting ball head 9 of this ball-type hole and high-pressure plunger 7 and low-pressure plunger 8 upper end, and can energizes high-pressure plunger 7 and low-pressure plunger 8 move up and down; When high-pressure plunger 7 and low-pressure plunger 8 move up, hydraulic oil enters in high pressure cylinder body 3 and low pressure cylinder body 4, when high-pressure plunger 7 and low-pressure plunger 8 move down, hydraulic oil under the effect of high-pressure plunger 7 and low-pressure plunger 8 through high pressure check valve and low pressure check valve.
Described control valve assembly comprises control valve body 16, control valve body 16 is provided with drain tap 29 and two output circuits, one group of high pressure cylinder body 3(, first group of high pressure cylinder body 3) with one group of low pressure cylinder body 4(, first group of low pressure cylinder body 4 vertical with it) be connected with an output circuit, another group high pressure cylinder body 3(second group of high pressure cylinder body 3) and another organize low pressure cylinder body 4(second group of high pressure cylinder body 3) be connected with another output circuit.
Described output circuit comprises high-pressure overflow valve 17, low pressure relief valve 18 and safety valve 19, and the flow-off of this high-pressure overflow valve 17, low pressure relief valve 18 and safety valve 19 is all connected with drain tap 29.Control valve body 16 is provided with a grease chamber 20, described grease chamber 20 has low pressure filler opening, low pressure oil outlet and high pressure filler opening, the filler opening of described low pressure relief valve 18 is connected with this grease chamber 20, the filler opening of low pressure relief valve 18 and high pressure filler opening are positioned at the two ends of grease chamber 20, and low pressure filler opening, low pressure oil outlet are positioned at the relative both sides of grease chamber 20; In this grease chamber 20, be provided with a draining one-way valve 21, described draining one-way valve 21 is positioned between the filler opening of low pressure relief valve 18 and the low pressure filler opening (and low pressure oil outlet) of grease chamber 20; A push rod 22 is provided with in grease chamber 20, one end and the one-way valve of described push rod 22 are just right, can by draining one-way valve 21 reverse opening by this push rod 22, a piston 23 is provided with away from one end of draining one-way valve 21 at push rod 22, this piston 23 is slidably matched with grease chamber 20, and piston 23 is positioned between high pressure filler opening and low pressure filler opening (and low pressure oil outlet).Wherein one group of low pressure cylinder body 4(, first group of low pressure cylinder body 4) bottom be connected with grease chamber 20 low pressure filler opening by oil duct, low pressure oil outlet and pump housing oil outlet 28(first pump housing oil outlet 28 of this grease chamber 20) be connected; Like this, after low-pressure hydraulic oil is come, due to the effect of one-way valve, hydraulic oil cannot pass one-way valve, also just relief valve cannot be entered, thus by being directly connected with (first) pump housing oil outlet 28 after the low pressure oil outlet of grease chamber 20, carry out low-pressure hydraulic oil output by (first) pump housing oil outlet 28.With one group of high pressure cylinder body 3(, first group of high pressure cylinder body 3 that this group low pressure cylinder body 4 is vertical) bottom be connected with the high pressure filler opening of high-pressure overflow valve 17, safety valve 19, grease chamber 20 and the low pressure filler opening of 20, grease chamber by oil duct simultaneously.Because hydraulic oil is when exporting, requirement is had to hydraulic pressure, when hydraulic pressure is too high, export from hydraulic oil one tunnel that (first group) high pressure cylinder body 3 flows out through (first) pump housing oil outlet 28, another road is discharged by drain tap 29 after high-pressure overflow valve 17 overflow, 3rd tunnel is discharged by drain tap 29 after safety valve 19, 4th tunnel to flow to bottom grease chamber 20 and by push rod 22 jack-up, by push rod 22 by draining one-way valve 21 reverse opening, 5th road hydraulic oil is discharged by drain tap 29 through after draining one-way valve 21 and low pressure relief valve 18, although the low pressure oil outlet of grease chamber 20 is connected with (first) pump housing oil outlet 28, but (first) pump housing oil outlet 28 hydraulic pressure is higher due to now, therefore, high pressure liquid force feed cannot be discharged from (first) pump housing oil outlet 28, and after draining one-way valve 21, enter low pressure relief valve 18, flow to drain tap 29 by low pressure relief valve 18 1 to discharge.
In actual course of working, described control valve body 16 is connected by transitional connection pipe with the oil duct of the joint of the pump housing 1, thus makes oil duct joint better tightness.
In working procedure, when large swash plate 10 and little swash plate 11 accept rotary motion that main shaft 6 imports into rotate time, two inclined-planes just create at main shaft 6 axial direction and move up and down; Because retainer 12 is between large swash plate 10 and little swash plate 11, simultaneously due to piston shoes 13 and high-pressure plunger 7 and low-pressure plunger 8 hinged, therefore retainer 12 can not rotate, therefore retainer 12 transmits pumping to high-pressure plunger 7 and low-pressure plunger 8 of large swash plate 10 and little swash plate 11 inclined-plane, and high-pressure plunger 7 and low-pressure plunger 8 are pumped; High-pressure plunger 7 and low-pressure plunger 8 often turn in high pressure cylinder body 3 and low pressure cylinder body 4 movable once, thus the hydraulic oil in compressing high pressure cylinder body 3 and low pressure cylinder body 4 produces pressure; Fuel feeding efficiency is higher, and stability is better.
As a kind of mode of execution, low pressure relief valve 18 set action pressure 20MPa, when operate outside pressure is less than the setting value of low pressure relief valve 18, the hydraulic oil extruded by high-pressure plunger 7 and low-pressure plunger 8 merges together outside output by the oil duct in control valve body 16, and now output flow is maximum.When operate outside pressure meets or exceeds 20MPa, make low pressure relief valve 18 action, start pressure release.Now the upper and lower of push rod 22 is owing to being connected from different oil circuits respectively, creates pressure difference, promotes push rod 22 and moves upward, low pressure oil way is opened completely, and low pressure oil way does not participate in work completely, only exports high pressure oil, now output flow is minimum, and pressure can reach maximum.
Finally it should be noted that, above embodiment is only in order to illustrate technological scheme of the present invention but not restriction technologies scheme, those of ordinary skill in the art is to be understood that, those are modified to technological scheme of the present invention or equivalent replacement, and do not depart from aim and the scope of the technical program, all should be encompassed in the middle of right of the present invention.
Claims (5)
1. a dual output axial piston pump, is characterized in that: comprise plunger pump body and control valve assembly, and this plunger pump body and control valve assembly are connected together by connecting bolt;
Described plunger pump body comprises the pump housing, pump cover, high pressure cylinder body, low pressure cylinder body, cylinder body fixing frame and main shaft, described high pressure cylinder body and low pressure cylinder body everybody 4, the pump housing is provided with high pressure cylinder body mounting hole and low pressure cylinder body mounting hole, described high pressure cylinder body and low pressure cylinder body correspondence are installed in high pressure cylinder body mounting hole and low pressure cylinder body mounting hole, and be fixed on the pump housing by cylinder body fixing frame, wherein, high pressure cylinder body and low pressure (LP) cylinder body are positioned at circumferentially same, 4 high pressure cylinder bodies and 4 low pressure cylinder bodies are divided into two groups respectively, often organizing high pressure cylinder body and often organizing low pressure cylinder body lays respectively in same radial direction, and two of two groups of high pressure cylinder body places diameters are vertical with two diameters at two groups of low pressure cylinder body places respectively, described pump cover is fixedly connected with cylinder body fixing frame, and between pump cover, cylinder body fixing frame and the pump housing, form an airtight oil pocket, described high pressure cylinder body is equipped with on low pressure cylinder body the through hole be connected with this oil pocket, below the through hole of high pressure cylinder body and low pressure cylinder body, be respectively equipped with high pressure check valve and low pressure check valve, in high pressure cylinder body and low pressure cylinder body, be respectively equipped with high-pressure plunger and low-pressure plunger, the upper end of described high-pressure plunger and low-pressure plunger is provided with connecting ball head, the pump housing is also provided with a pump housing filler opening and two pump housing oil outlets, and described pump housing filler opening is connected with oil pocket by oil duct, and the bottom of two groups of high pressure cylinder bodies is connected with two pump housing oil outlets respectively by oil duct,
Described main shaft runs through pump cover, cylinder body fixing frame and the pump housing from top to bottom, and is connected with the pump housing with pump cover by positioning bearing; Large swash plate, little swash plate, retainer and piston shoes are provided with between cylinder rack and pump cover, described large swash plate and little swash plate all sheathed and be fixed on main shaft, wherein, large swash plate is positioned at above little swash plate, the two sides that large swash plate is adjacent with little swash plate is inclined-plane, and two inclined-planes are parallel to each other; Described retainer is between large swash plate and little swash plate, and this retainer place plane is parallel with the inclined-plane of little swash plate with large swash plate; On retainer, the position of corresponding high-pressure plunger and low-pressure plunger is provided with piston shoes mounting hole, described piston shoes are installed in piston shoes mounting hole, the first thrust-bearing is provided with between retainer and the inclined-plane of little swash plate, between piston shoes and the inclined-plane of large swash plate, be provided with the second thrust-bearing, thus realize the relative positioning of large swash plate, piston shoes, retainer and little swash plate; The downside of these piston shoes has ball-type hole, and piston shoes are hinged by the connecting ball head of this ball-type hole and high-pressure plunger and low-pressure plunger upper end, and can energizes high-pressure plunger and low-pressure plunger move up and down;
Described control valve assembly comprises control valve body, control valve body is provided with a drain tap and two output circuits, one group of high pressure cylinder body is connected with an output circuit with one group of vertical with it low pressure cylinder body, and another group high pressure cylinder body is connected with another output circuit with another group low pressure cylinder body;
Described output circuit comprises high-pressure overflow valve, low pressure relief valve and safety valve, and the flow-off of this high-pressure overflow valve, low pressure relief valve and safety valve is all connected with drain tap; Control valve body is provided with a grease chamber, described grease chamber has low pressure filler opening, low pressure oil outlet and high pressure filler opening, the filler opening of described low pressure relief valve is connected with this grease chamber, the filler opening of low pressure relief valve and high pressure filler opening are positioned at the two ends of grease chamber, and low pressure filler opening, low pressure oil outlet are positioned at the relative both sides of grease chamber; In this grease chamber, be provided with a draining one-way valve, described draining one-way valve is between the filler opening and the low pressure filler opening of grease chamber of low pressure relief valve; A push rod is provided with in grease chamber, one end of described push rod and one-way valve are just right, can by draining one-way valve reverse opening by this push rod, are provided with a piston at push rod away from one end of draining one-way valve, this piston and grease chamber are slidably matched, and piston is between high pressure filler opening and low pressure filler opening; Wherein the bottom of one group of low pressure cylinder body is connected with grease chamber's low pressure filler opening by oil duct, and the low pressure oil outlet of this grease chamber is connected with a pump housing oil outlet; The bottom of the one group high pressure cylinder body vertical with this group low pressure cylinder body is connected with the high pressure filler opening of high-pressure overflow valve, safety valve, grease chamber and the low pressure filler opening of position, grease chamber by oil duct simultaneously.
2. a kind of dual output axial piston pump according to claim 1, is characterized in that: described control valve body is connected by transitional connection pipe with the oil duct of the joint of the pump housing.
3. a kind of dual output axial piston pump according to claim 1, is characterized in that: large swash plate is connected with main shaft by the transmission screw that laterally runs through main shaft, and shallow bid is connected with main shaft by locking ball.
4. a kind of dual output axial piston pump according to claim 1, is characterized in that: between the upper side and pump cover of large swash plate, be provided with the 3rd thrust-bearing.
5. a kind of dual output axial piston pump according to claim 1, it is characterized in that: on the pump housing, be also provided with two pump housing return openings, two pump housing return openings are all connected with oil pocket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510985286.8A CN105402101B (en) | 2015-12-25 | 2015-12-25 | A kind of dual output axial plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510985286.8A CN105402101B (en) | 2015-12-25 | 2015-12-25 | A kind of dual output axial plunger pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105402101A true CN105402101A (en) | 2016-03-16 |
| CN105402101B CN105402101B (en) | 2017-10-13 |
Family
ID=55467802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510985286.8A Expired - Fee Related CN105402101B (en) | 2015-12-25 | 2015-12-25 | A kind of dual output axial plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105402101B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108397436A (en) * | 2018-04-17 | 2018-08-14 | 迪斯油压工业(昆山)有限公司 | Applied to the pre- full valve gear of the big flow on hydraulic press |
| CN110608145A (en) * | 2018-06-14 | 2019-12-24 | 奥来救援科技有限公司 | Double-output electric hydraulic pump |
| CN114412742A (en) * | 2021-10-28 | 2022-04-29 | 中国航发西安动力控制科技有限公司 | Double-output axial plunger pump |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2097291U (en) * | 1991-07-04 | 1992-02-26 | 金庆珷 | Plunger pump with multiple chambers |
| JPH08254177A (en) * | 1995-03-17 | 1996-10-01 | Kayseven Co Ltd | Swash type piston pump and swash plate type piston motor |
| CN102937087A (en) * | 2012-10-30 | 2013-02-20 | 王玉喜 | Plunger pump in double swash plate structure |
| CN103277277A (en) * | 2013-06-09 | 2013-09-04 | 韩竞飞 | Single-eccentric-shaft double-plunger four-cylinder high pressure pump |
-
2015
- 2015-12-25 CN CN201510985286.8A patent/CN105402101B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2097291U (en) * | 1991-07-04 | 1992-02-26 | 金庆珷 | Plunger pump with multiple chambers |
| JPH08254177A (en) * | 1995-03-17 | 1996-10-01 | Kayseven Co Ltd | Swash type piston pump and swash plate type piston motor |
| CN102937087A (en) * | 2012-10-30 | 2013-02-20 | 王玉喜 | Plunger pump in double swash plate structure |
| CN103277277A (en) * | 2013-06-09 | 2013-09-04 | 韩竞飞 | Single-eccentric-shaft double-plunger four-cylinder high pressure pump |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108397436A (en) * | 2018-04-17 | 2018-08-14 | 迪斯油压工业(昆山)有限公司 | Applied to the pre- full valve gear of the big flow on hydraulic press |
| CN108397436B (en) * | 2018-04-17 | 2024-02-27 | 迪斯油压工业(昆山)有限公司 | Large-flow prefill valve device applied to hydraulic press |
| CN110608145A (en) * | 2018-06-14 | 2019-12-24 | 奥来救援科技有限公司 | Double-output electric hydraulic pump |
| CN114412742A (en) * | 2021-10-28 | 2022-04-29 | 中国航发西安动力控制科技有限公司 | Double-output axial plunger pump |
| CN114412742B (en) * | 2021-10-28 | 2023-09-22 | 中国航发西安动力控制科技有限公司 | Double-output axial plunger pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105402101B (en) | 2017-10-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104373397A (en) | Double hydraulic system and hydraulic machine | |
| CN103939311B (en) | A kind of hydraulic pressure backhaul radial plunger pump adopting biserial guiding valve to join oil | |
| CN105402101A (en) | Double-output axial plunger pump | |
| CN204458582U (en) | Double hydraulic system and hydraulic press | |
| CN101216022B (en) | Plunger ported axial plunger hydraulic pump | |
| CN104828702A (en) | Crane, reversing control system, and oil supply apparatus thereof | |
| CN205503582U (en) | Ultrahigh -pressure supercharger | |
| CN105332966A (en) | High pressure unloading valve for hydraulic driving hydrostatic test | |
| CN201810438U (en) | Constant-pressure oil injection pump of diesel | |
| CN104564578A (en) | Manual variable oil pump | |
| US20190219049A1 (en) | Double acting linear electrical submersible pump and method for its operation | |
| CN205243994U (en) | Hydraulic drive hydrostatic test high pressure unloading valve | |
| CN201212493Y (en) | Bidirectional hydraulic supercharging mechanism | |
| CN204163974U (en) | Plunger pump | |
| CN103968127A (en) | Pressure valve of oil press | |
| CN201055956Y (en) | Spindle box lubricating device | |
| CN204591605U (en) | A kind of plunger head rolling structure without piston shoes being applicable to axial plunger hydraulic pump | |
| CN104632740A (en) | Overflow valve and application thereof | |
| CN103277276A (en) | Ultrahigh pressure multistage radial plunger pump | |
| CN207920986U (en) | A kind of Pneumatic booster pump with unloading function | |
| CN205260297U (en) | Hydraulic pressure booster pump | |
| CN108561306B (en) | Double-acting full-balance inlet high-pressure hydraulic end | |
| CN202017668U (en) | Hydraulic system capable of ensuring synchronized motion of hydraulic oil cylinders of hydraulic precision forging machine | |
| CN110529459A (en) | A kind of Quick cylinder | |
| CN2915919Y (en) | Jib type hydraulic hole extruding machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171013 Termination date: 20211225 |