CN102155448A - Torque amplifying device - Google Patents
Torque amplifying device Download PDFInfo
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- CN102155448A CN102155448A CN2011100730706A CN201110073070A CN102155448A CN 102155448 A CN102155448 A CN 102155448A CN 2011100730706 A CN2011100730706 A CN 2011100730706A CN 201110073070 A CN201110073070 A CN 201110073070A CN 102155448 A CN102155448 A CN 102155448A
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- shell
- hydraulic fluid
- fluid port
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Abstract
The invention relates to a torque amplifying device belonging to the field of hydraulic transmission and control technology. The torque amplifying device comprises a shell, a stator and a rear cover which are fixedly connected, wherein a valve element sleeve is arranged in the shell, a rotor is arranged in the stator, an output shaft is supported in the rear cover, an inner hole of the rotor is in meshed connection with opposite ends of an input linkage shaft and an output linkage shaft simultaneously, the shell extends out of an oil port boss, the length direction of the oil port boss is vertical to the main axis of the shell, an oil inlet and an oil outlet of the shell are arranged in length direction and are respectively communicated with corresponding oil tanks in the shell through an oil inlet hole and an oil outlet hole, so as to form a flow distribution structure. An overflow valve is arranged between the oil inlet hole and the oil outlet hole, and an adjusting end of the overflow valve is arranged at one axial side surface of the oil port boss. By adopting the invention, the regulation and the maintenance are very convenient, the process is simple and the volume and the weight are reduced remarkably.
Description
Technical field
The present invention relates to a kind of hydraulic pressure installation, especially a kind of torque amplification device belongs to hydraulic transmission and control technique field.
Background technique
Understand according to the claimant, all-hydraulic torque amplification device is the conventional steering device of a kind of widespread on engineering machinery, farm machinery and other engineering vehicles, its typical structure as shown in Figure 1, 2, contain the housing 1, flow-distribution mechanism, stator 16, the bonnet 2 that are bolted to connection, valve core housing 5 places enclosure interior, supports the spool 4 that is connected with input shaft in the valve core housing 5.What housing 1 homonymy distributed is communicated with respectively with into and out of oilhole into and out of hydraulic fluid port, and with valve core housing 5 in corresponding oil groove connection.Cycloid tooth rotor 15 places stator 16 inside, and this rotor is that 7 tooth pin teeth of 6 tooth cycloids and stator constitute the secondary measuring apparatus of cycloidal-pin wheel.Rotor 15 endoporus are 12 tooth internal splines, opposite end with input couple axle 13 and output couple axle 8 is connected with a joggle simultaneously, the other end of input couple axle 13 is connected with valve core housing 5 by finger 12, output couple axle 8 the other ends and output shaft 6 are in transmission connection, output shaft 6 is supported in the bonnet 2, and output terminal stretches out bonnet, housing 1 be shaped on the relief valve that overflow spool 25 and valve seat 26 constitutes into and out of the hydraulic fluid port end face.
In the work (referring to application number be 200610039126.5 Chinese patent application file), when spool 4 input torques, driving valve core housing 5 by input couple axle 13 rotates, switch oilhole and oil groove on housing 1 and the valve core housing 5, the pressure oil that oil inlet hole is imported enters into the expansion oil pocket of commentaries on classics, stator engagement pair, the contraction oil pocket fluid of commentaries on classics, stator engagement pair enters into housing 1 oil-return groove simultaneously, discharge through return opening, thereby driving rotor 15 rotates, hydraulic pressure can be walked around turns to mechanical energy, by output couple axle 8, output shaft 6 outputs.This 6/7 tooth changes the stator pair and have the characteristic of accurate measurement when hydraulic pressure can be converted into mechanical energy, has therefore realized being input to the function that the moment of torsion on the spool accurately amplifies.When system pressure was higher than the relief valve setting, relief valve was opened oil return, guaranteed the constant of system pressure.
For a long time, owing to constitute before and after vertically, being provided with in the valve core housing of flow-distribution mechanism, so be always the homonymy distributed architecture of correspondence into and out of hydraulic fluid port on the housing into and out of oil ring groove.Compact structureization along with the steering gear, the problem order benefit that this existing structure in use reflects is outstanding: at first, the existing homonymy distributed architecture of oil inlet and outlet makes relief valve axially to be provided with along torque amplification device, in case after installing, be subject to axial space, the adjusting of relief valve and maintenance are very difficult; If relief valve is come out to be separately set in respectively in the steering system, certainly will increase manufacture cost, cause installing inconvenience.Secondly, the homonymy of hydraulic fluid port distributes it must be communicated with flow-distribution mechanism by inclined hole fully, complex process, manufacture cost height.And cause great inconvenience for the main frame installation and maintenance.In addition, existing hydraulic fluid port structure also makes housing and whole torque amplification device bulky, and not only waste material has also brought other inconvenience.
Summary of the invention
The objective of the invention is to: the problem at above-mentioned prior art exists by architecture advances, proposes a kind of back torque amplification device easy to adjust of installing.
In order to achieve the above object, torque amplification device of the present invention contains the shell that constitutes along the fixedly connected according to the order of sequence housing of main axis direction (1), stator (16), bonnet (2), the valve core housing (5) that supports input spool (4) is housed in the described housing, the rotor (15) that forms the cycloidal-pin wheel pair with it is housed in the described stator, supports output shaft (6) in the described bonnet; Described rotor inner hole is connected with a joggle with the opposite end of importing couple axle (13) and output couple axle (8) simultaneously by internal spline, the other end of described input couple axle is connected with valve core housing by finger (12), and the other end of described output couple axle is in transmission connection by internal spline and output shaft; Its improvements are: described housing extends the hydraulic fluid port boss (43) that have end face (1-1) and two axial sides (1-2,1-3) constitute, and the length direction of described hydraulic fluid port boss is vertical with described main axis; Arranging along described length direction into and out of hydraulic fluid port (IN, OUT) of described housing is communicated with by the corresponding oil groove in oilhole (1-4,1-8) and described housing respectively, the formation distributing construction; Described into and out of the relief valve (44) that the adjustable side is positioned at one of hydraulic fluid port boss axial sides is housed between the oilhole.
The present invention further improves, and described filler opening is communicated with oil-feed annular groove in the described housing by straight-through oil inlet hole and switching oilhole, and described oil outlet is communicated with the oil ring groove that goes out in the described housing by leading directly to oil outlet.
Above-mentioned improvement technological scheme of the present invention has been broken the inertia of conventional construction, under the prerequisite that keeps the original performance of torque amplification device, because the variation of hydraulic fluid port structure makes the adjusted position of relief valve become and device axis Vertical direction, therefore the space is unrestricted, it is very convenient to regulate maintenance, and simultaneously, hydraulic fluid port is mainly straight hole with the oilhole that is communicated with of oil groove, therefore technology is simple, helps to reduce manufacture cost.In addition, the hydraulic fluid port structure after the improvement also makes the volume and weight of housing and whole torque amplification device obviously reduce, thereby has brought many facilities for transportation, installation.
Description of drawings
The invention will be further described below in conjunction with accompanying drawing.
Fig. 1 is the prior art constructions schematic representation.
Fig. 2 is the plan view of Fig. 1.
Fig. 3 is the preferred embodiments of the present invention structural representation.
Fig. 4 is the B-B cross-sectional view of Fig. 3.
Fig. 5 is the A-A cross-sectional view of Fig. 4.
Embodiment
The torque amplification device of present embodiment such as Fig. 2-shown in Figure 5, contain the shell that constitutes along the fixedly connected according to the order of sequence housing 1 of main axis direction, stator 16, bonnet 2, stator 16 two ends are equipped with two respectively every dish.The valve core housing 5 of input spool 4 is housed in this housing 1, and input spool 4 is connected as a single entity with the input shaft 42 that stretches out housing 1.The rotor 15 that forms the cycloidal-pin wheel pair with it is housed in the stator 16.Support output shaft 6 in the bonnet 2.The endoporus of rotor 15 is connected with a joggle with the opposite end of input couple axle 13 with output couple axle 8 simultaneously by internal spline, the other end of input couple axle 13 is connected with valve core housing 5 by finger 12, and the other end of output couple axle 8 is in transmission connection by internal spline and output shaft 6.Housing 1 extends the hydraulic fluid port boss 43 with end face 1-1 and two axial side 1-2,1-3 formations up.The length direction of this hydraulic fluid port boss is vertical with the main axis of whole device.The length direction into and out of hydraulic fluid port IN, OUT along hydraulic fluid port boss 43 of housing 1 is arranged, filler opening IN is by straight-through oil inlet hole 1-4 and by turning to straight hole 1-5 and the length switching oilhole that logical inclined hole 1-6 constitutes very short end to be communicated with oil-feed annular groove 1-7 in the housing, oil outlet OUT then is communicated with the oil ring groove 1-9 that goes out in the housing by straight-through oil outlet 1-8, thereby match with the counter structure of valve core housing 5, constitute flow-distribution mechanism.Between straight-through oilhole 1-4,1-8, the relief valve 44 that the adjustable side is positioned at hydraulic fluid port boss axial sides 1-3 is housed.Filler opening IN communicates with the oil suction chamber 44-1 of relief valve 44, and return opening OUT communicates with the oil back chamber 44-2 of relief valve 44, is used to guarantee the stable of whole steering system oil pressure.
With various steering device of vehicles supporting after, when steering wheel rotation not, fluid is entered by the filler opening on the housing, this moment, relative displacement did not take place in valve core housing, fluid is by the direct return opening oil sump tank from the housing of valve core housing.When steering wheel rotation, fluid flows into torque amplification device by filler opening, enter into the oil-feed annular groove by the switching oilhole, valve core housing generation relative displacement this moment, fluid enters in cycloidal-pin wheel commentaries on classics, the stator pair by spool, valve pocket radial hole etc., promote rotor and drive the rotation of output couple axle, can (pressure, flow) convert hydraulic pressure to mechanical energy (moment of torsion, rotating speed), the amplification moment of torsion that output speed is identical with steering wheel.
When the hydraulic system oil pressure was higher than the relief valve set pressure, fluid entered into the relief valve oil suction chamber by filler opening, made relief valve spool produce displacement, and unnecessary fluid enters into the relief valve oil back chamber, and by return opening backflow fuel tank, made system oil pressure keep constant.
Present embodiment has been broken hydraulic transmission industry traditional product typing for a long time confinement, by architecture advances, has produced outstanding substantive distinguishing features and remarkable progress.Facts have proved, after adopting the device of present embodiment, because filler opening on the housing and return opening are symmetrically distributed along the housing center, relief valve is packed into from the housing side, therefore compared with prior art has following remarkable advantage: the 1) adjusting of relief valve and safeguard very convenient; 2) oilhole easy processing, manufacture cost decreases; 3) volume is small and exquisite, transportation, installation facility.
In addition to the implementation, the present invention can also have other mode of executions.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop on the protection domain of requirement of the present invention.
Claims (5)
1. torque amplification device, contain the shell that constitutes along the fixedly connected according to the order of sequence housing of main axis direction (1), stator (16), bonnet (2), the valve core housing (5) that supports input spool (4) is housed in the described housing, the rotor (15) that forms the cycloidal-pin wheel pair with it is housed in the described stator, supports output shaft (6) in the described bonnet; Described rotor inner hole is connected with a joggle with the opposite end of importing couple axle (13) and output couple axle (8) simultaneously by internal spline, the other end of described input couple axle is connected with valve core housing by finger (12), and the other end of described output couple axle is in transmission connection by internal spline and output shaft; It is characterized in that: described housing extends the hydraulic fluid port boss (43) that have end face (1-1) and two axial sides (1-2,1-3) constitute, and the length direction of described hydraulic fluid port boss is vertical with described main axis; Arranging along described length direction into and out of hydraulic fluid port (IN, OUT) of described housing is communicated with by the corresponding oil groove in oilhole (1-4,1-8) and described housing respectively, the formation distributing construction; Described into and out of the relief valve (44) that the adjustable side is positioned at one of hydraulic fluid port boss axial sides is housed between the oilhole.
2. torque amplification device according to claim 1, it is characterized in that: described filler opening is communicated with oil-feed annular groove in the described housing by straight-through oil inlet hole and switching oilhole, and described oil outlet is communicated with the oil ring groove that goes out in the described housing by leading directly to oil outlet.
3. torque amplification device according to claim 2 is characterized in that: described input spool is connected as a single entity with the input shaft that stretches out housing.
4. according to claim 2 or 3 described torque amplification devices, it is characterized in that: described switching oilhole is by turning to straight hole and eventually logical inclined hole to constitute.
5. torque amplification device according to claim 4 is characterized in that: described filler opening communicates with the oil suction chamber of relief valve, and return opening communicates with the oil back chamber of relief valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100730706A CN102155448A (en) | 2011-03-23 | 2011-03-23 | Torque amplifying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100730706A CN102155448A (en) | 2011-03-23 | 2011-03-23 | Torque amplifying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102155448A true CN102155448A (en) | 2011-08-17 |
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ID=44437071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100730706A Pending CN102155448A (en) | 2011-03-23 | 2011-03-23 | Torque amplifying device |
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| CN (1) | CN102155448A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104024088A (en) * | 2011-12-27 | 2014-09-03 | 丹佛斯动力***有限公司 | Hydraulic steering device |
| CN105114375A (en) * | 2015-09-08 | 2015-12-02 | 镇江液压股份有限公司 | Back cover displacement type torque amplifier |
| CN108945095A (en) * | 2018-09-05 | 2018-12-07 | 芜湖中意液压科技股份有限责任公司 | A kind of hydraulic steering gear of adjustable displacement |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3935918A (en) * | 1974-09-09 | 1976-02-03 | Caterpillar Tractor Co. | Dual source hydraulic steering system |
| GB2345044A (en) * | 1998-12-23 | 2000-06-28 | Daimler Chrysler Ag | Centring a steering wheel in an emergency steering system for motor vehicles |
| CN2642618Y (en) * | 2003-08-05 | 2004-09-22 | 镇江液压件总厂 | Combined dynamic load sensing full hydraulic pressure steering system |
| CN1865712A (en) * | 2006-03-28 | 2006-11-22 | 镇江液压件厂有限责任公司 | Combined dynamic load sensing torque amplifying and converting device |
| CN201057122Y (en) * | 2007-04-11 | 2008-05-07 | 镇江大力液压马达有限责任公司 | Strong-sealing high-speed stream cycloid hydraulic motor and high-pressure rotating shaft seal |
| CN201121555Y (en) * | 2007-11-26 | 2008-09-24 | 镇江大力液压马达有限责任公司 | Dual-spindle output shaft valve flow distribution cycloid hydraulic motor |
| CN201137548Y (en) * | 2008-01-04 | 2008-10-22 | 镇江大力液压马达有限责任公司 | Minisize axial-flow cycloid hydraulic motor |
-
2011
- 2011-03-23 CN CN2011100730706A patent/CN102155448A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3935918A (en) * | 1974-09-09 | 1976-02-03 | Caterpillar Tractor Co. | Dual source hydraulic steering system |
| GB2345044A (en) * | 1998-12-23 | 2000-06-28 | Daimler Chrysler Ag | Centring a steering wheel in an emergency steering system for motor vehicles |
| CN2642618Y (en) * | 2003-08-05 | 2004-09-22 | 镇江液压件总厂 | Combined dynamic load sensing full hydraulic pressure steering system |
| CN1865712A (en) * | 2006-03-28 | 2006-11-22 | 镇江液压件厂有限责任公司 | Combined dynamic load sensing torque amplifying and converting device |
| CN201057122Y (en) * | 2007-04-11 | 2008-05-07 | 镇江大力液压马达有限责任公司 | Strong-sealing high-speed stream cycloid hydraulic motor and high-pressure rotating shaft seal |
| CN201121555Y (en) * | 2007-11-26 | 2008-09-24 | 镇江大力液压马达有限责任公司 | Dual-spindle output shaft valve flow distribution cycloid hydraulic motor |
| CN201137548Y (en) * | 2008-01-04 | 2008-10-22 | 镇江大力液压马达有限责任公司 | Minisize axial-flow cycloid hydraulic motor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104024088A (en) * | 2011-12-27 | 2014-09-03 | 丹佛斯动力***有限公司 | Hydraulic steering device |
| CN105114375A (en) * | 2015-09-08 | 2015-12-02 | 镇江液压股份有限公司 | Back cover displacement type torque amplifier |
| CN108945095A (en) * | 2018-09-05 | 2018-12-07 | 芜湖中意液压科技股份有限责任公司 | A kind of hydraulic steering gear of adjustable displacement |
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Application publication date: 20110817 |