CN201225348Y - Hydraulic two-stage spiral swinging oil cylinder - Google Patents
Hydraulic two-stage spiral swinging oil cylinder Download PDFInfo
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- CN201225348Y CN201225348Y CNU2008201183264U CN200820118326U CN201225348Y CN 201225348 Y CN201225348 Y CN 201225348Y CN U2008201183264 U CNU2008201183264 U CN U2008201183264U CN 200820118326 U CN200820118326 U CN 200820118326U CN 201225348 Y CN201225348 Y CN 201225348Y
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- spiral groove
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Abstract
The utility model relates to a drive device which can transform liquid input into torque and oscillation angle output, in particular to a hydraulic two-stage screw oscillation oil cylinder which comprises a cylinder barrel (7), a rotating piston (6) and an output shaft (1), wherein the rotating piston is arranged in the cylinder barrel and is a sleeve with an inner spiral groove and an outer spiral groove, and the spiral directions of the inner spiral groove and the outer spiral groove are opposite; the outer spiral groove on the sleeve is matched with an inner spiral groove on the inner wall of the cylinder barrel, and the inner spiral groove on the sleeve is matched with an outer spiral groove on the output shaft. The utility model adopts the two-stage spiral transmission in the hydraulic oil cylinder skillfully, causes each stage (spiral) corner to obtain the vector superposition, reaches larger angle, and realizes the purpose of the oil cylinder transforming into large oscillation (rotation) angle output from little straight reciprocating motion. The utility model can be widely applied to fields needing maximum output torque and wide output corner range with minimum space, and can also be freely combined about the output manner and the structure so as to meet demands of equipment in different fields.
Description
Affiliated technical field:
The utility model relates to a kind of drive unit, particularly hydraulic two-stage spiral oscillating oil cylinder that the fluid input is converted into moment of torsion and pivot angle output.
Background technique:
At present, by hydraulic jack transmitting torque and pivot angle, be that the fluid input that will have energy is converted into one of method of moment of torsion and pivot angle output, the hydraulic pressure of this class swing (revolution) oil cylinder is commonly used two kinds of structural types, that is: gear rack is swung (revolution) oil cylinder and blade oscillating (revolution) oil cylinder.
Gear rack swing (revolution) oil cylinder is formed and is comprised straight line oil cylinder, gear, tooth bar etc., the gear rack oscillating oil cylinder is to promote tooth bar by oil cylinder, thereby tooth bar rubbing gear reaches the purpose of linear reciprocating motion input changing into swing (revolution) motion output.If the output angle of gear is 360 degree, then the minimum effective length of tooth bar is one times a gear joint garden girth.As rotate 720 degree, and then the minimum effective length of tooth bar is the gear joint garden girth of twice, all the other are analogized in proper order.Because the point of action of tooth bar rubbing gear on the pitch circle of the outside of gear, so there is a radially invalid greatly load, makes gear turning axle and tooth bar bear a very big flexural stress.Simultaneously, because gear rack is in engagement process, have only 1-2 tooth to participate in engagement, restriction based on current material, the translational forces that acts on the engaging tooth that oil cylinder promotes tooth bar output can not surpass its flexural stress that can bear, this just limited excess pressure fluid input (≤16Mpa), greatly reduce the efficient that straight line motion that hydraulic pressure can driving oil cylinder drives the tooth bar input is converted into gear output rotation motion.Because the relation (л * joint garden diameter) of the output corner of gear and its joint garden girth has determined the minimum length of tooth bar,, application is greatly limited simultaneously so the boundary dimension of this oil cylinder is very big.And need also in the design of oil cylinder to consider that support accessory is in order to offset the radially invalid load on the contact points.
Blade oscillating (revolution) oil cylinder is formed and is comprised cylinder body, rotor blade, stator blade etc., and the blade oscillating oil cylinder is by stator blade and rotor blade this enclosed space to be divided into two independently spaces in the space of a complete closed.When one of them space increased gradually owing to entering of hydraulic oil, then another space reduced gradually, rotated around its fixed axis thereby promote rotor blade, reached the purpose of output rotation motion.There are two fatal weakness in this kind swing (revolution) oil cylinder, and the first, because the existence of stator blade is arranged, the hard-over that makes its output that is to say and can't realize 360 degree rotations in theory less than 360 degree.The second, because moving vane need be divided into the large space of complete closed the little space of two complete closed again, and the size between two little spaces is in the variation fully.So require the periphery of moving vane (profile rectangular) must form sealing extremely reliably.Circular pieces can have been accomplished to seal extremely reliably in the world at present, and withstand voltage degree reaches more than the 100MPa, but Rectangular Parts is not still had solution effectively, and withstand voltage degree is smaller or equal to 6.3Mpa.Because sealing problem makes it can not import high pressure, this just greatly reduces the size of output torque.
The model utility content:
The utility model purpose provides a kind of hydraulic two-stage spiral oscillating oil cylinder, in little space, makes oil cylinder from little linear reciprocating motion, is transformed into big swing (revolution) angle of output, and the output high pulling torque solves the problems referred to above that exist in the background technique.
The technical solution of the utility model is:
Hydraulic two-stage spiral oscillating oil cylinder, it comprises: cylinder barrel, rotary-piston, output shaft, rotary-piston is arranged in the cylinder barrel, rotary-piston is for having inside and outside spiral fluted cover, its rotation direction is opposite, external spiral groove that puts and the coupling of the inner spiral groove on the inner wall of cylinder, the inner spiral groove that puts and the coupling of the external spiral groove on the output shaft.
Cylinder barrel is provided with fluid bore, is provided with sealing between cylinder barrel, rotary-piston, output shaft, and space segmentation in the cylinder barrel is become two independently enclosed spaces, and each separate space is communicated with fluid bore on the cylinder barrel respectively.Fluid bore is the passage of the fluid turnover cylinder barrel of band energy; Above-mentioned two enclosed spaces charge into the fluid of band energy, and by variation in pressure, this disappears, and that is long, and total volume is constant, and the rotary-piston that drives in the cylinder barrel moves, rotates, moment of torsion and pivot angle that output shaft output is big.
The said fluid that has an energy is oil preferably, can be emulsified liquid, water etc. also, and said cylinder barrel is exactly the cylinder body of oil cylinder.
The sealing that is provided with between cylinder barrel, rotary-piston, output shaft can be following structural type:
Between output shaft and inner wall of cylinder, be provided with and support sealing, be provided with the hole between inner wall of cylinder that fluid bore is other and the rotary-piston with sealing, be provided with axle between rotary-piston and the output shaft with sealing, form an independently enclosed space, a fluid bore on this spatial communication cylinder barrel by above-mentioned sealing between inner wall of cylinder, rotary-piston, the output shaft; Remaining part constitutes another independently enclosed space in the cylinder barrel, another fluid bore on this spatial communication cylinder barrel, above-mentioned two enclosed spaces charge into (energy fluid) hydraulic oil, pass through variation in pressure, this disappears, and that is long, total volume is constant, and the rotary-piston that drives in the cylinder body moves, rotates, moment of torsion and pivot angle that output shaft output is big.
The way of output of output shaft is arbitrarily, for example by flange output, twin shaft output, single shaft output, endoporus output or the like.
Working principle: the supposition cylinder body is fixed, when fluid bore enters (energy fluid) high pressure oil, the enclosed space of Lian Tonging will increase with it, the rotary-piston supposition moves right, meanwhile under the accurate mating reaction of inner spiral groove on external spiral groove on the rotary-piston and the inboard wall of cylinder block, produce again and rotatablely move i.e. rotation while moving.And the inner spiral groove on the rotary-piston accurately cooperates with external spiral groove on the output shaft, and rotation motion is passed to output shaft.Because output shaft is relative static on axial direction with cylinder body, so when aforementioned enclosed space increases, rotary-piston also moves right with respect to output shaft, because the inner spiral groove on the rotary-piston cooperates with the accurate of external spiral groove on the output shaft, makes output shaft produce a rotation motion again.So far, the angle of revolution of output shaft output is the vector superposed of two-stage screw corner, thereby has realized the axial displacement that rotary-piston is very little, just can make the very big angle of swing of output shaft output, greatly reduces the axial length of oil cylinder.
Because the axial length of oil cylinder can infinitely prolong in theory, that is to say that above-mentioned enclosed space can be infinitely great, rotary-piston just can move right always, thereby also just can successively export any angle of revolution.Otherwise when another fluid bore entered (energy fluid) high pressure oil, then output shaft can successively be exported oppositely angle of revolution arbitrarily, thereby finished swing (revolution) process of oil cylinder.If output shaft is in stationary state, then cylinder body can output torque.
The shape of inner wall of cylinder is cylinder preferably, and round structure is all adopted in all sealings, and the reliability of sealing is fabulous, can bear high pressure (normal conditions≤35Mpa).And under the equal conditions, because this oil cylinder is in any working procedure, all groove teeth all participate in engagement, connect as spline, thereby make this kind oil cylinder reach the great purpose of output (moment of torsion) power.
Adopt the utility model, two-stage screw swing (revolution) oil cylinder, owing in hydraulic jack, adopted the two-stage screw transmission dexterously, make every grade of (spiral) corner obtain vector superposed, reached bigger angle, realize oil cylinder from little linear reciprocating motion, be transformed into the purpose of big swing (revolution) angle of output.All teeth groove all participate in engagement in reliable high pressure sealing and any process owing to having adopted again simultaneously, connect as free-sliding spline, so can realize the purpose of output polar high pulling torque and power.
Because the above-mentioned advantage of two-stage screw swing (revolution) oil cylinder is minimum in the space, needs output torque very big, in the field that output corner haves a wide reach great application will be arranged.Simultaneously, under the constant prerequisite of two-stage screw transmission principle, can also be on the way of output, structure combination in any to satisfy the needs of different field equipment.
Description of drawings:
Fig. 1 is the utility model embodiment one a structural representation.
Fig. 2 is F-F sectional structure schematic representation of wooden model utility embodiment one.
Among the figure: output shaft 1, Support cushion 2, support sealing 3, hole sealing 4, axle sealing 5 and 9, rotary-piston 6, cylinder barrel 7, end cap 8, Cock screw 10, enclosed space 11 and 12, fluid bore 14 and 15.
Embodiment:
The utility model is described in further detail by the following examples.
Embodiment one, with reference to attached Fig. 1 and 2.
Present embodiment is that output shaft is provided with the flange attachment hole by the flange output torque on the output shaft.
Hydraulic two-stage spiral oscillating oil cylinder, it comprises: cylinder barrel 7, rotary-piston 6, output shaft 1, cylinder barrel is provided with two fluid bore 14 and 15, rotary-piston is arranged in the cylinder barrel, rotary-piston is for having inside and outside spiral fluted cover, its rotation direction is opposite, external spiral groove that puts and the coupling of the inner spiral groove on the inner wall of cylinder, inner spiral groove that puts and the coupling of the external spiral on the output shaft; Following seal form is set: between output shaft and inner wall of cylinder, be provided with and support sealing 3 between cylinder barrel 7, rotary-piston 6, output shaft 1, be provided with Support cushion 2 simultaneously, be provided with the hole between cylinder barrel 7 inwalls on fluid bore 14 sides and the rotary-piston 6 with sealing 4, be provided with axle between rotary-piston 6 and the output shaft 1 with sealing 5, form an independently enclosed space 11, a fluid bore 14 on this spatial communication cylinder barrel by above-mentioned sealing between inner wall of cylinder, rotary-piston, the output shaft; Remaining part constitutes another independently enclosed space 12 in the cylinder barrel, another fluid bore 15 on this spatial communication cylinder barrel, above-mentioned two enclosed spaces charge into hydraulic oil, pass through variation in pressure, this disappears, and that is long, total volume is constant, and the rotary-piston that drives in the cylinder body moves, rotates, moment of torsion and pivot angle that output shaft output is big.
The end of cylinder barrel is provided with end cap 8, is fixed on the output shaft 1 by Cock screw 10, is provided with axle between end cap and the output shaft with sealing 9, also is provided with sealing between end cap and the cylinder barrel.
Relation between cylinder barrel 7, rotary-piston 6, the output shaft 1: rotary-piston 6 is installed on the output shaft 1, and the external spiral groove of output shaft 1 is accurately cooperated with inner spiral groove on the rotary-piston 6, simultaneously rotary-piston 6 is contained in the inside of cylinder body 7 again, and rotary-piston 6 external spiral grooves are accurately cooperated with inner spiral groove on the cylinder body 7.
Working procedure: supposition cylinder body 7 is fixing, the pressure of hydraulic oil is greater than 160MP, when fluid bore 14 enters high pressure oil, the enclosed space 11 of Lian Tonging will increase with it, rotary-piston moves right, meanwhile under the accurate mating reaction of inner spiral groove on external spiral groove on the rotary-piston and the inboard wall of cylinder block, produce again and rotatablely move i.e. rotation while moving.And the inner spiral groove on the rotary-piston accurately cooperates with external spiral groove on the output shaft, and rotation motion is passed to output shaft.Because output shaft is relative static on axial direction with cylinder body, so when aforementioned enclosed space 11 increases, rotary-piston also moves right with respect to output shaft, because the inner spiral groove on the rotary-piston cooperates with the accurate of external spiral groove on the output shaft, makes output shaft produce a rotation motion again.So far, the angle of revolution of output shaft output is the vector superposed of two-stage screw corner, thereby has realized the axial displacement that rotary-piston is very little, just can make the very big angle of swing of output shaft output, greatly reduces the axial length of oil cylinder.Otherwise when another fluid bore 15 entered high pressure oil, then output shaft can successively be exported oppositely angle of revolution arbitrarily, thereby finished swing (revolution) process of oil cylinder.
Claims (4)
1, a kind of hydraulic two-stage spiral oscillating oil cylinder, it is characterized in that comprising cylinder barrel (7), rotary-piston (6), output shaft (1), rotary-piston is arranged in the cylinder barrel, rotary-piston is for having inside and outside spiral fluted cover, its rotation direction is opposite, external spiral groove that puts and the coupling of the inner spiral groove on the inner wall of cylinder, the inner spiral groove that puts and the coupling of the external spiral groove on the output shaft.
2, the hydraulic two-stage spiral oscillating oil cylinder according to claim 1, it is characterized in that cylinder barrel is provided with fluid bore (14,15), cylinder barrel (7), rotary-piston (6), output shaft are provided with sealing between (1), space segmentation in the cylinder barrel is become two independently enclosed spaces, and each separate space is communicated with fluid bore on the cylinder barrel respectively.
3, the hydraulic two-stage spiral oscillating oil cylinder according to claim 2, it is characterized in that cylinder barrel (7), rotary-piston (6), the sealing that is provided with between the output shaft (1), be following structure: between output shaft and inner wall of cylinder, be provided with and support sealing (3), be provided with the hole between cylinder barrel (7) inwall that fluid bore (14) is other and the rotary-piston (6) with sealing (4), be provided with axle between rotary-piston (6) and the output shaft (1) with sealing (5), inner wall of cylinder, rotary-piston, form an independently enclosed space (11), the fluid bore (14) on this spatial communication cylinder barrel by above-mentioned sealing between the output shaft; Remaining part constitutes another independently enclosed space (12), another fluid bore (15) on this spatial communication cylinder barrel in the cylinder barrel.
4, according to claim 1 or 2 described hydraulic two-stage spiral oscillating oil cylinders, the end that it is characterized in that cylinder barrel (7) is provided with end cap (8), be fixed on the output shaft (1) by Cock screw (10), be provided with axle between end cap and the output shaft (1) with sealing (9), also be provided with sealing between end cap and the cylinder barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201183264U CN201225348Y (en) | 2008-06-04 | 2008-06-04 | Hydraulic two-stage spiral swinging oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201183264U CN201225348Y (en) | 2008-06-04 | 2008-06-04 | Hydraulic two-stage spiral swinging oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201225348Y true CN201225348Y (en) | 2009-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2008201183264U Expired - Lifetime CN201225348Y (en) | 2008-06-04 | 2008-06-04 | Hydraulic two-stage spiral swinging oil cylinder |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101372992B (en) * | 2008-06-04 | 2010-12-22 | 郭玉恒 | Method for converting fluid input into torque and swinging angle outputs and specific oil cylinder |
| CN102286994A (en) * | 2011-07-07 | 2011-12-21 | 安徽惊天液压智控股份有限公司 | Multifunctional hydraulic wrist for digging machine |
| CN102490699A (en) * | 2011-11-10 | 2012-06-13 | 林志国 | Rotatable lifting support leg of vehicle |
| CN102797623A (en) * | 2012-08-19 | 2012-11-28 | 杭州宇控机电工程有限公司 | Double-helix swing hydraulic motor with flow distribution and power distribution functions |
| CN105650052A (en) * | 2016-03-31 | 2016-06-08 | 江阴市洪腾机械有限公司 | Dual-spiral swing hydraulic cylinder |
| WO2020155329A1 (en) * | 2019-01-29 | 2020-08-06 | 江苏钧微动力科技有限公司 | Vector rotation mechanism having servo cylinder |
-
2008
- 2008-06-04 CN CNU2008201183264U patent/CN201225348Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101372992B (en) * | 2008-06-04 | 2010-12-22 | 郭玉恒 | Method for converting fluid input into torque and swinging angle outputs and specific oil cylinder |
| CN102286994A (en) * | 2011-07-07 | 2011-12-21 | 安徽惊天液压智控股份有限公司 | Multifunctional hydraulic wrist for digging machine |
| CN102490699A (en) * | 2011-11-10 | 2012-06-13 | 林志国 | Rotatable lifting support leg of vehicle |
| CN102490699B (en) * | 2011-11-10 | 2013-12-18 | 林志国 | Rotatable lifting support leg of vehicle |
| CN102797623A (en) * | 2012-08-19 | 2012-11-28 | 杭州宇控机电工程有限公司 | Double-helix swing hydraulic motor with flow distribution and power distribution functions |
| CN102797623B (en) * | 2012-08-19 | 2015-02-25 | 杭州宇控机电工程有限公司 | Double-helix swing hydraulic motor with flow distribution and power distribution functions |
| CN105650052A (en) * | 2016-03-31 | 2016-06-08 | 江阴市洪腾机械有限公司 | Dual-spiral swing hydraulic cylinder |
| WO2020155329A1 (en) * | 2019-01-29 | 2020-08-06 | 江苏钧微动力科技有限公司 | Vector rotation mechanism having servo cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20090422 Effective date of abandoning: 20080604 |