CN1055795A - Energy conversion mechanism for variable gear hydraulic system - Google Patents
Energy conversion mechanism for variable gear hydraulic system Download PDFInfo
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- CN1055795A CN1055795A CN 90102214 CN90102214A CN1055795A CN 1055795 A CN1055795 A CN 1055795A CN 90102214 CN90102214 CN 90102214 CN 90102214 A CN90102214 A CN 90102214A CN 1055795 A CN1055795 A CN 1055795A
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- gear
- cover
- driven gear
- pump cover
- driving gear
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Abstract
The present invention relates to hydraulic transmission energy transfer mechanism, particularly gear pump or the gear motor similar to Principles of Gear Connection.Characteristics of the present invention are by changing gear engagement length, flow being changed according to the needs of actual conditions.Overcome the energy loss that flow and operating mode do not match and cause a large amount of pressure oil spill to return.Can save Flow valve and relevant hydraulic element such as selector valve, thereby simplify hydraulic system.Gear pump (motor) series is simplified.Be applicable to the mechanical field of electromechanical integration.
Description
The present invention relates to the hydraulic transmission energy transfer mechanism similar to Principles of Gear Connection, the particularly pump of force feed working medium, also can be the oil hydraulic motor that is driven by hydraulic medium.This energy transfer mechanism is made up of line shaft (1), front pump cover (2), the pump housing (4), rear pump cover (6), driving gear (5), driven gear (7), passive tooth wheel shaft (12).
Characteristics such as, reliable operation simple in structure because of it at engineering machinery field middle gear pump or gear type motor, low price obtain very using widely.But most gear pumps or motor are quantitative, and the constant situation down-off of axle rotating speed does not change yet.And practical situations needs variable mostly, though certain operating mode need quantitative also can not be just consistent with its rated flow, just the problem that a large amount of pressure oil spill are got back to fuel tank appears so at work.Make whole hydraulic system efficient reduce, lose big energy.For satisfying various needs, complicated topped each class of product line ability just must be arranged simultaneously to flow.Thereby variable displacement pump and variable displacement motor become the problem of extensive concern in the domestic and international hydraulic transmission field.External gear pump with variable capacity also has research, but its complex structure, volume is big, makes difficulty.At least at home do not seen application.British patent document " modified model or the argumentation relevant with gear pump with variable capacity " (1539515) disclosed gear pump with variable capacity is to realize variable by the internal tooth that control and gear contain fully, complex structure, and some other part is to be difficult to processing.The disclosed gear pump with variable capacity of Russian Patent document " gear pump of can regulate flow " (568745), the drive unit that shaft end seal parts and axle top is set and sets up makes its axial dimension strengthen complex structure.Particularly " bearing " that cooperates with driving gear axle head sealed member is non-periphery, thereby its ring structure is difficult to design.
The objective of the invention is to design a kind of gear type hydraulic transmission energy transfer mechanism of changeable flow, promptly can be used as pump and use, also can be used as motor and use.Overcome the shortcoming of quantitative.Raise the efficiency, save the energy, simplify product line, and its structure and manufacturing process will adapt to the prior art level, to meet the needs of production.
Purpose of design of the present invention is to realize by following structure: this variable gear hydraulic transmission energy transfer mechanism is made up of line shaft (1), front pump cover (2), the pump housing (4), rear pump cover (6), driving gear (5), driven gear (7), passive tooth wheel shaft (12).Its characteristics are that it also comprises pressure barrier element (3), this pressure barrier element is contained in driving gear one side, lean against the driving gear side, the identical short slot cambered surface with the cover plug with the driving gear top circle of its cylindrical working surface diameter matches, the cover plug (11) that external diameter is identical with driven gear (7) top circle, the corresponding section with master, driven gear engagement at this cover plug has the axial short slot identical with the meshing zone section, piston (8) and hydraulic type or mechanical stroke control mechanism that external diameter is identical with driven gear (7) top circle.Have the cavity that can hold cover plug (11) in the front pump cover (2), in rear pump cover (6), have and to hold the cavity that piston (8) slides in stroke range.Cover plug (11), driven gear (7), piston (8) and axial restraint part in addition is housed on passive tooth wheel shaft (12).More than one group of in addition slip in the part cavity that can between front pump cover (2), the pump housing (4) and rear pump cover (6), form by range controlling mechanism control.The characteristics of pressure stroke control mechanism (accompanying drawing 1) are at driven axle two ends a, b chamber cut-in pressure oil pipe, communicate with pressure oil and fuel tank respectively through selector valve (13), and pressure oil is from the pressure hydraulic fluid port of this pump.Said mechanical trip control mechanism is so its characteristics are being made up of nut-screw or the screw rod tooth bar is formed or eccentric wheel and chute is formed or gear rack is formed or the curved bar connecting rod is formed or hand lever and stop screw are formed.
Accompanying drawing 1 is schematic representation of the present invention.
Accompanying drawing 2 is drawing in side sectional elevation of the present invention.
Accompanying drawing 3 is cover plug (11) schematic representation.
Below in conjunction with accompanying drawing embodiments of the invention are further described: variable gear hydraulic transmission energy transfer mechanism is similar to the overall structure of full depth tooth wheel pump and gear motor, promptly by in front pump cover (2), the pump housing (4) and the formed cavity of rear pump cover (6) assembling relevant hydraulic pressure part in addition being installed.Front pump cover (2) can be integral with rear pump cover (6) with the pump housing (4) or the pump housing (4).A pair of gear is installed in the chamber, and driving gear (5) is contained on the line shaft (1), and pressure barrier element (3) and bearing, oil sealing also are housed.Line shaft (1) can pass through key connecting with driving gear (5), also can be made into one.Passive tooth wheel shaft (12) is equipped with piston (8), driven gear (7), bearing, cover plug (11) and axial restraint nut.The external diameter of piston (8) is identical with the driven gear top circle.Excircle part is equipped with oil sealing, and can slide in the chamber of rear pump cover (6).Cover plug (11) as shown in Figure 3, external diameter is identical with driven gear (7), having axial short slot with master, driven gear engagement corresponding section, this short slot section is consistent with the meshing zone shape, matches with the bottom cylindrical working surface of pressure barrier element (3) and the top circle of driving gear (5) in the recessed surface of this short slot.Overlap beyond the Great Wall that circular surfaces has oil sealing, can in a chamber of front pump cover (2), slide.Relevant position at front pump cover (2), rear pump cover (6), pressure barrier element (3), cover plug (11) and piston (8) has the compensating groove (d) (seeing accompanying drawing 2) that belongs to prior art.The alleged tooth-formation of gear of the present invention comprises the rotor pump of involute shape, cycloidal, circular arc and various the intermesh member identical with Principles of Gear Connection.That Stroke Control of the present invention can adopt is manual, electronic, surge or pressure-compensated control.With hydraulic control such as accompanying drawing 1, connect oil pipe in a, b two chambeies, communicate with pressure oil or fuel tank respectively by selector valve.The control selector valve is may command stroke (or selector valve and mechanical link stopper be used).The mechanical stroke control mechanism can be hand lever and stop screw or nut-screw formula or screw rod rack-type or eccentric wheel and chute-type or pinion and-rack, or crank-linkage type etc.
Variable gear hydraulic pressure of the present invention, the transmission system energy transfer mechanism is fit to the operating mode of needs unsteady flow amount, overcome flow and operating mode a large amount of pressure oil spill that do not match and returned the energy loss problem that is caused, can save Flow valve and relevant hydraulic element such as selector valve, thereby the simplification oil circuit is simplified hydraulic system.While also can make simple, the manufacturing easily of series simplification, structure, is suitable for promoting.Be applicable to the mechanical field of electromechanical integration such as lathe, engineering machinery, farm machinery, chemical machinery.
Claims (1)
1, a kind of energy conversion mechanism for variable gear hydraulic system of being made up of line shaft (1), front pump cover (2), the pump housing (3), rear pump cover (6), driving gear (5), driven gear (7), passive tooth wheel shaft (12) is characterized in that:
A, this mechanism also comprises pressure barrier element (3), this barrier element is contained in driving gear one side, lean against the driving gear side, the identical short slot cambered surface with cover plug (11) with the driving gear top circle of its cylindrical working surface diameter matches, the cover plug (11) that external diameter is identical with driven gear (7) top circle, go up with main at this cover plug (11), the opposite position of driven gear engagement has the axial short slot identical with the meshing zone section, piston (8) and oil pressure or mechanical stroke control mechanism that external diameter is identical with driven gear (7) top circle
Have the cavity that can hold cover plug (11) in b, the front pump cover (2), in rear pump cover (6), have and can hold the cavity that piston (8) slides in stroke range,
C, cover plug (11) is housed on passive tooth wheel shaft (12), driven gear (7), piston (8) and axial restraint be part in addition, more than one group part can be in front pump cover (2) by range controlling mechanism control in addition, slip in the cavity that forms between the pump housing (4) and rear pump cover (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90102214 CN1055795A (en) | 1990-04-15 | 1990-04-15 | Energy conversion mechanism for variable gear hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90102214 CN1055795A (en) | 1990-04-15 | 1990-04-15 | Energy conversion mechanism for variable gear hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1055795A true CN1055795A (en) | 1991-10-30 |
Family
ID=4877423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90102214 Pending CN1055795A (en) | 1990-04-15 | 1990-04-15 | Energy conversion mechanism for variable gear hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1055795A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345600A (en) * | 2010-07-26 | 2012-02-08 | 施韦比施冶金厂汽车有限公司 | Pressure pump with suction nut |
| CN105041639A (en) * | 2015-08-27 | 2015-11-11 | 刘凡 | External gearing variable gear pump |
| CN106763632A (en) * | 2017-01-10 | 2017-05-31 | 袁廷华 | A kind of toroidal continuously variable transmission |
| CN112240323A (en) * | 2020-10-07 | 2021-01-19 | 邵玉强 | Hydraulic cycloid motor |
-
1990
- 1990-04-15 CN CN 90102214 patent/CN1055795A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345600A (en) * | 2010-07-26 | 2012-02-08 | 施韦比施冶金厂汽车有限公司 | Pressure pump with suction nut |
| CN105041639A (en) * | 2015-08-27 | 2015-11-11 | 刘凡 | External gearing variable gear pump |
| CN106763632A (en) * | 2017-01-10 | 2017-05-31 | 袁廷华 | A kind of toroidal continuously variable transmission |
| CN112240323A (en) * | 2020-10-07 | 2021-01-19 | 邵玉强 | Hydraulic cycloid motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C03 | Withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |