CN102588238A - Crankshaft type radial two-way variable displacement plunger pump - Google Patents

Crankshaft type radial two-way variable displacement plunger pump Download PDF

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Publication number
CN102588238A
CN102588238A CN2011100072186A CN201110007218A CN102588238A CN 102588238 A CN102588238 A CN 102588238A CN 2011100072186 A CN2011100072186 A CN 2011100072186A CN 201110007218 A CN201110007218 A CN 201110007218A CN 102588238 A CN102588238 A CN 102588238A
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CN
China
Prior art keywords
shaft
cavity
plunger pump
pump
coupling
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Application number
CN2011100072186A
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Chinese (zh)
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CN102588238B (en
Inventor
元钢
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元钢
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Priority to CN201110007218.6A priority Critical patent/CN102588238B/en
Publication of CN102588238A publication Critical patent/CN102588238A/en
Application granted granted Critical
Publication of CN102588238B publication Critical patent/CN102588238B/en

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Abstract

The invention discloses a crankshaft type radial two-way variable displacement plunger pump, which comprises a radial plunger pump. A pump shaft extends out of a pump body from the bottom end and is connected with a divider through a coupler. An extension block radially arranged a driven shaft with the circular cross section. The divider comprises a shell, an oil distribution shaft and a fixing block, wherein the oil distribution shaft is mounted in the casing through a bearing capable of rotating in the shell, a cavity is arranged in the oil distribution shaft and has the circular cross section, the radius of the circular section of the cavity is equal to the sum of the radius of the cross section of the driven shaft and the extension length of the extension block, the fixing block is arranged in the axial direction of the cavity of the oil distribution shaft, the fixing block is fixedly connected with the oil distribution shaft, the driven shaft of the coupler penetrates the cavity of the oil distribution shaft, and the extension block of the coupler is hermetically butted against the inner wall of the cavity of the oil distribution shaft so that the cavity of the oil distribution shaft is divided into a first auxiliary cavity unit and a second auxiliary cavity unit. Besides, the shell of the divider is provided with a first oil inlet and a second oil inlet. A simplified, energy-saving, high-efficiency and impact-vibration-free hydraulic driving system can be formed by the aid of the crankshaft type radial two-way variable displacement plunger pump.

Description

Curved shaft type is the bidirectional variable plunger pump radially
Technical field
The present invention relates to a kind of radial plunger pump, specifically is radially bidirectional variable plunger pump of a kind of curved shaft type.
Background technique
At present; Known hydraulic driving system working pressure in the world is between 30-60MPa; The discharge capacity of high pressure oil pump (containing axial piston pump and radial plunger pump) is below 1000L/min; Nearly all various pump can only be accomplished unidirectional feed flow, use these pump composition systems after, the control of hydraulic system action can only lean on the switch of various valves to accomplish (below be referred to as valve control system); So bring the drawback of following several respects: 1) system drive efficient is low: the high-pressure energy that the high-pressure service pump labor energy forms can only be used in the single single-acting; Will this part energy discharged in vain just and can move next time subsequently, energy waste be serious, and brings the side effect of following others; 2) the system shock vibration is strong: this part energy greatly reduces the life-span of each parts of system through all parts such as pipeline, valve piece etc. that hydraulic shock is attached thereto when discharging high pressure energy, and rate of fault improves thereupon; 3) if, still sacrificed the cycle of system acting, the productivity of huge equipment is greatly reduced though use multistage valve group order step-down or servo ratio control to slow down to some extent to hydraulic shock; 4) high pressure oil discharges a part of high pressure energy through a large amount of heatings of oil in the process of valve step-down off-load, and oily temperature rise has reduced the life-span of hydraulic oil, and the installed power that thereupon will improve the radiation system of system support could mate, and this has caused further energy waste again.
Summary of the invention
The embodiment of the invention provides radially bidirectional variable plunger pump of a kind of curved shaft type to the problems referred to above, and its concrete scheme is following:
Curved shaft type is the bidirectional variable plunger pump radially, comprises radial plunger pump, coupling and shunt; The pump shaft of said radial plunger pump extends the pump housing of said radial plunger pump from said radial plunger pump bottom, and is connected to said shunt through said coupling; And the pump shaft of said radial plunger pump is as the driving shaft of said coupling; The driven shaft section of said coupling is circular, and also is provided with extension block diametrically; Said shunt comprises housing, oil distributing shaft and fixed block, and in said housing, said bearing can rotate in said housing said oil distributing shaft through Bearing Installation; And be provided with cavity in the said oil distributing shaft, said cavity section is circular, and said cavity section radius equates with the driven shaft section radius and the said extension block extended length sum of said coupling; Said oil distributing shaft cavity axially on also be provided with fixed block, said fixed block and said oil distributing shaft are connected; The driven shaft of said coupling is interspersed in the cavity of said oil distributing shaft, and the cavity inner wall of the extension block of said coupling and said oil distributing shaft sealing conflict, and the cavity of oil distributing shaft is spaced apart the first secondary cavity and the second secondary cavity; The housing of said shunt also is provided with first filler opening and second filler opening that is communicated with the said first secondary cavity, the second secondary cavity respectively.
Preferably, the oil-feed of said first filler opening and second filler opening is controlled by Hydrauservo System.
Preferably, also be provided with the encoder of measuring the driven shaft angle of swing on the driven shaft of said coupling, and said encoder is electrically connected with said Hydrauservo System.
Preferably, the pump shaft of said radial plunger pump is a bent axle, comprises main journal and connecting rod neck, on the connecting rod neck of said bent axle, is provided with capacity eccentric bearing, and the connecting rod neck of the inner ring of said capacity eccentric bearing and said bent axle holds; Also be provided with slide block between the outer ring of said capacity eccentric bearing and the plunger of radial plunger pump.
Preferably, said slide block is to keep the magnetic slider of applying with the outer ring of said capacity eccentric bearing.
Preferably, the plunger of said radial plunger pump middle part is provided with the through hole that is communicated with the plunger two ends.
Use technological scheme of the present invention; With traditional valve control hydraulic system transformation or directly create pump control system; Greatly promote energy utilization rate; If the hydraulic system transformation that domestic thousands of large free forgings are made press, drop press, extrusion press etc. finishes, only energy-conservation this just will be equivalent to the energy of several ten million tons of standard coals for country's year saving; Promote the productivity and the ability of domestic main equipment, reduce the maintenance time and the expense of equipment, create higher industrial output value.Because what the present invention relates to is large-scale or superhuge system and equipment, will be nothing difficult for country promotes tens billion of extremely hundreds billion of production capacities; Promote China and manufacture and design large-scale and ability and level the super sized type hydraulic system, will make China reach or surmount in this field becomes the highest level in the world, further promotes the level of equipment manufacture, becomes outlet by import; Well-knownly be that design, manufacturing and the use of large-scale and large equipment are one of most important signs that improves national core competitiveness and strategic reserves ability.Utilize the present invention can constitute simplification, energy-conservation, efficient and do not have a hydraulic driving system of impact shock.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, does not constitute to improper qualification of the present invention, in the accompanying drawings:
Fig. 1 is an embodiment of the invention structural representation;
Fig. 2 analyses and observe body for the A-A direction of Fig. 1;
Fig. 3 is the B-B direction sectional view of Fig. 1.
Each reference character is among the figure:
1, pump shaft 2, the pump housing
3, driven shaft 4, housing
5, oil distributing shaft 6, fixed block
71, first secondary cavity 72, the second secondary cavity
81, first filler opening 82, second filler opening
9, capacity eccentric bearing 10, slide block
Embodiment
To combine accompanying drawing and specific embodiment to specify the present invention below, be used for explaining the present invention in this illustrative examples of the present invention and explanation, but not as to qualification of the present invention.
Embodiment
Shown in Fig. 1-3, a radial plunger pump, the pump shaft 1 of said radial plunger pump passes through Bearing Installation in the pump housing 2; And pump shaft 1 extends the pump housing 2 of said radial plunger pump from said radial plunger pump bottom, and is connected with the driving shaft of a coupling, as the driving shaft of said coupling; Driven shaft 3 sections of said coupling are circular, and also are provided with extension block diametrically;
Other is provided with a shunt, and said shunt comprises housing 4, oil distributing shaft 5 and fixed block 6, and in said housing 4, said bearing can rotate in said housing 4 said oil distributing shaft 5 through Bearing Installation; And be provided with cavity in the said oil distributing shaft 5, said cavity section is circular, and said cavity section radius equates with the driven shaft 3 section radiuses and the said extension block extended length sum of said coupling; Said oil distributing shaft 5 cavitys axially on also be provided with fixed block 6, said fixed block 6 is connected with said oil distributing shaft 5;
The driven shaft 3 of said coupling is interspersed in the cavity of said oil distributing shaft 5, and the cavity inner wall of the extension block of said coupling and said oil distributing shaft 5 sealing conflict, and the cavity of oil distributing shaft 5 is spaced apart the first secondary cavity 71 and the second secondary cavity 72;
The housing 4 of said shunt also is provided with first filler opening 81 and second filler opening 82 that is communicated with said first secondary cavity 71, the second secondary cavity 72 respectively.
In the foregoing description scheme; In first filler opening 81 and second filler opening 82, inject control oil to first secondary cavity 71, the second secondary cavity 72; Through adjusting the control oil content in first secondary cavity 71, the second secondary cavity 72; Change the cross-sectional area of first secondary cavity 71, the second secondary cavity 72, and then change the relative position of coupling driven shaft 3 and shunt oil distributing shaft 5, reach the flow of control radial plunger pump and the purpose of direction.
As the improvement of the foregoing description scheme, the oil-feed of first filler opening 81 and second filler opening 82 receives Hydrauservo System (not indicating) control, thereby reaches accurate control oil-feed.
As the improvement of the foregoing description scheme, also be provided with the encoder (indicating) of measuring driven shaft 3 angle of swing on the driven shaft 3 of said coupling, and said encoder is electrically connected with said Hydrauservo System, thereby can in time measures the selected angle of coupling.
As the improvement of the foregoing description scheme, the pump shaft 1 of said radial plunger pump is a bent axle, comprises main journal and connecting rod neck, on the connecting rod neck of said bent axle, is provided with capacity eccentric bearing 9, and the connecting rod neck of the inner ring of said capacity eccentric bearing 9 and said bent axle holds; Also be provided with slide block 10 between the outer ring of said capacity eccentric bearing 9 and the plunger of radial plunger pump.
As the improvement of the foregoing description scheme, said slide block 10 is to keep the magnetic slider of applying with the outer ring of said capacity eccentric bearing 9.
As the improvement of the foregoing description scheme, the plunger of said radial plunger pump middle part is provided with the through hole that is communicated with the plunger two ends.
In the improvement of the foregoing description scheme, on the bent axle in the pump housing 2, be fitted with capacity eccentric bearing 9, the magnetic force slide block 10 supporting with a plurality of plungers is installed on the bent axle.Capacity eccentric bearing 9 is separated slide block 10 and bent axle and is given slide block 10 the eccentric rotary position of bent axle and strength transmission, converts the high-speed slide friction to rolling friction again simultaneously.In slide block 10, be equipped with and adjust magnetic means slide block 10 is fitted tightly on crankshaft bearing, guarantee servo-actuated property with bent axle.Magnetic force slide block 10 compressing plungers move reciprocatingly in the pump housing 2 and make the pump housing 2 accomplish oil suction and oil extraction when crankshaft rotating.Make a call to a tiny through hole at the plunger middle part and derive the hydraulic oil that the pump housing 2 forms; Make between slide block 10 and plunger ball-joint position and slide block 10 and the crankshaft bearing and form hydraulic floatage; Because of plunger ball-joint position and slide block 10 and crankshaft bearing contact position area greater than sectional area of plunger, under identical hydraulic pressure, slide block 10 and crankshaft bearing and slide block 10 and plunger ball-joint position formation hydraulic pressure selflubricating superpressure oil film interlayer; It is lubricated to form the nothing wearing and tearing, the working life of improving these each parts of pump greatly.
Structure of the present invention and manner of execution have special ability and purposes in addition.When plunger obtains in the process of input oil to the low level motion in a high position; If when making that through the coupling action input oil of plunger acceptance is high pressure oil; High pressure oil through plunger to the bent axle acting of having an effect; The state of this moment and the working state of motor car engine are similar, and promptly the pressure oil of system makes motor not consuming electric power this moment of driven pump or reduces power consumption through the rotation acting of accelerating pump; Thereby bring the pressure of a lot of side effects to use system's abandoned well, reach energy-saving effect very efficiently.
More than the technological scheme that the embodiment of the invention provided has been carried out detailed introduction; Used concrete example among this paper the principle and the mode of execution of the embodiment of the invention are set forth, above embodiment's explanation only is applicable to the principle that helps to understand the embodiment of the invention; Simultaneously, for one of ordinary skill in the art, according to the embodiment of the invention, the part that on embodiment and application area, all can change, in sum, this description should not be construed as limitation of the present invention.

Claims (6)

1. curved shaft type bidirectional variable plunger pump radially is characterized in that:
Comprise radial plunger pump, coupling and shunt;
The pump shaft of said radial plunger pump extends the pump housing of said radial plunger pump from said radial plunger pump bottom, and is connected to said shunt through said coupling; And the pump shaft of said radial plunger pump is as the driving shaft of said coupling;
The driven shaft section of said coupling is circular, and also is provided with extension block diametrically;
Said shunt comprises housing, oil distributing shaft and fixed block, and in said housing, said bearing can rotate in said housing said oil distributing shaft through Bearing Installation; And be provided with cavity in the said oil distributing shaft, said cavity section is circular, and said cavity section radius equates with the driven shaft section radius and the said extension block extended length sum of said coupling; Said oil distributing shaft cavity axially on also be provided with fixed block, said fixed block and said oil distributing shaft are connected;
The driven shaft of said coupling is interspersed in the cavity of said oil distributing shaft, and the cavity inner wall of the extension block of said coupling and said oil distributing shaft sealing conflict, and the cavity of oil distributing shaft is spaced apart the first secondary cavity and the second secondary cavity;
The housing of said shunt also is provided with first filler opening and second filler opening that is communicated with the said first secondary cavity, the second secondary cavity respectively.
2. curved shaft type as claimed in claim 1 is the bidirectional variable plunger pump radially, it is characterized in that:
The oil-feed of said first filler opening and second filler opening is controlled by Hydrauservo System.
3. curved shaft type as claimed in claim 2 is the bidirectional variable plunger pump radially, it is characterized in that:
Also be provided with the encoder of measuring the driven shaft angle of swing on the driven shaft of said coupling, and said encoder is electrically connected with said Hydrauservo System.
4. curved shaft type as claimed in claim 1 is the bidirectional variable plunger pump radially, it is characterized in that:
The pump shaft of said radial plunger pump is a bent axle, comprises main journal and connecting rod neck, on the connecting rod neck of said bent axle, is provided with capacity eccentric bearing, and the connecting rod neck of the inner ring of said capacity eccentric bearing and said bent axle holds; Also be provided with slide block between the outer ring of said capacity eccentric bearing and the plunger of radial plunger pump.
5. curved shaft type as claimed in claim 4 is the bidirectional variable plunger pump radially, it is characterized in that:
Said slide block is to keep the magnetic slider of applying with the outer ring of said capacity eccentric bearing.
6. curved shaft type as claimed in claim 4 is the bidirectional variable plunger pump radially, it is characterized in that:
The plunger middle part of said radial plunger pump is provided with the through hole that is communicated with the plunger two ends.
CN201110007218.6A 2011-01-13 2011-01-13 Crankshaft type radial two-way variable displacement plunger pump CN102588238B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201110007218.6A CN102588238B (en) 2011-01-13 2011-01-13 Crankshaft type radial two-way variable displacement plunger pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201110007218.6A CN102588238B (en) 2011-01-13 2011-01-13 Crankshaft type radial two-way variable displacement plunger pump

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CN102588238A true CN102588238A (en) 2012-07-18
CN102588238B CN102588238B (en) 2014-10-29

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110439778A (en) * 2019-08-13 2019-11-12 安徽理工大学 A kind of New Dimensional Pump

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2233053A1 (en) * 1972-07-06 1974-03-28 Mathias Prof Dipl Ing Ott Radial piston machine
US5634777A (en) * 1990-06-29 1997-06-03 Albertin; Marc S. Radial piston fluid machine and/or adjustable rotor
CN1420962A (en) * 1999-02-17 2003-05-28 斯塔纳戴恩机动公司 Snap-in connection for pumping plunger sliding shoes
CN101131152A (en) * 2007-10-16 2008-02-27 天津市泽华源泵业科技发展有限公司 Constant-pressure variable radial-plunger pump
DE102007030132A1 (en) * 2007-06-29 2009-01-02 Robert Bosch Gmbh Radial piston engine, has pistons, which are connected with each other and cylinder sleeves are supported in swiveling and sliding manner, in order to adjust circumferential direction component of piston movement
CN201198821Y (en) * 2008-05-13 2009-02-25 宁波东方电力机具制造有限公司 Plunger pump
US20090155095A1 (en) * 2007-12-18 2009-06-18 Sauer-Danfoss Inc. Radial piston pump

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2233053A1 (en) * 1972-07-06 1974-03-28 Mathias Prof Dipl Ing Ott Radial piston machine
US5634777A (en) * 1990-06-29 1997-06-03 Albertin; Marc S. Radial piston fluid machine and/or adjustable rotor
CN1420962A (en) * 1999-02-17 2003-05-28 斯塔纳戴恩机动公司 Snap-in connection for pumping plunger sliding shoes
DE102007030132A1 (en) * 2007-06-29 2009-01-02 Robert Bosch Gmbh Radial piston engine, has pistons, which are connected with each other and cylinder sleeves are supported in swiveling and sliding manner, in order to adjust circumferential direction component of piston movement
CN101131152A (en) * 2007-10-16 2008-02-27 天津市泽华源泵业科技发展有限公司 Constant-pressure variable radial-plunger pump
US20090155095A1 (en) * 2007-12-18 2009-06-18 Sauer-Danfoss Inc. Radial piston pump
CN201198821Y (en) * 2008-05-13 2009-02-25 宁波东方电力机具制造有限公司 Plunger pump

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110439778A (en) * 2019-08-13 2019-11-12 安徽理工大学 A kind of New Dimensional Pump

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Granted publication date: 20141029

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