CN208858869U - A planetary gear reducer with small tooth difference - Google Patents
A planetary gear reducer with small tooth difference Download PDFInfo
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- CN208858869U CN208858869U CN201821068142.1U CN201821068142U CN208858869U CN 208858869 U CN208858869 U CN 208858869U CN 201821068142 U CN201821068142 U CN 201821068142U CN 208858869 U CN208858869 U CN 208858869U
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Abstract
一种少齿差行星线齿轮减速器，包括机体、动力传动部分，动力传动部分安装于减速器内腔内；动力传动部分包括输入轴、输出轴、偏心轴套、双联外线齿轮、输入端内线齿轮、输出端内线齿轮、配重件，输入轴安装于机体上，偏心轴套安装于输入轴上，双联外线齿轮通过转臂轴承安装于偏心轴套上，输入端内线齿轮固定于机体内部，输入端内线齿轮和双联外线齿轮的右端啮合形成一对少齿差内啮合线齿轮副；输出轴安装于机体内部并从机体的左端伸出，输出轴内端安装有输出端内线齿轮，输出端内线齿轮和双联外线齿轮的左端啮合形成一对少齿差内啮合线齿轮副。本实用新型具有结构紧凑、传动连续平稳、没有根切现象等优点。本实用新型属于减速装置技术领域。
A planetary gear reducer with small tooth difference, comprising a body, a power transmission part, and the power transmission part is installed in the inner cavity of the reducer; the power transmission part includes an input shaft, an output shaft, an eccentric shaft sleeve, a double outer gear, an input end The inner gear, the inner gear at the output end, the counterweight, the input shaft is installed on the body, the eccentric bushing is installed on the input shaft, the double outer gear is installed on the eccentric shaft sleeve through the arm bearing, and the inner gear at the input end is fixed on the body Internally, the inner gear at the input end meshes with the right end of the double outer gear to form a pair of inner meshing gear pairs with small tooth difference; the output shaft is installed inside the body and protrudes from the left end of the body, and the inner end of the output shaft is installed with the inner gear at the output end , the left end of the inner gear at the output end meshes with the left end of the double outer gear to form a pair of inner meshing gear pairs with small tooth difference. The utility model has the advantages of compact structure, continuous and stable transmission, no undercut phenomenon and the like. The utility model belongs to the technical field of reduction gears.
Description
Technical field
The utility model belongs to deceleration device technical field more particularly to a kind of fewer differential teeth planetary line gear retarder.
Background technique
Retarder simultaneously increases torque simultaneously for reducing prime mover revolving speed with power needed for output services machine, uses deceleration
Device significantly reduces the requirement to motor.Retarder is widely used in the every field of industry, many kinds of, each advantageous,
It is respectively suitable for different operating condition occasions, such as worm type of reduction gearing, gear reduction unit and planetary reduction gear.For common
Gear reduction unit, large transmission ratio to be realized need inevitably to make reducer structure heavy using Multi-stage transmission, bulky.Planet
Retarder breaches the limitation of dead axle transmission, and planetary gear makees revolution motion, so that the realization of small size big retarding ratio becomes to hold
Easily.A kind of planetary reduction gear of the little tooth difference speed reducer as special shape, it is skilful using the small teeth number difference between internal-external gear
Large transmission ratio is realized wonderfully.And gear quantity is few, and the quantity of single-stage sun gear and planetary gear is 1, compact overall structure, because
This is industrially used increasingly.It is dry between internal messing gear teeth pair to avoid for Reducer With Involute Gear of Less-tooth Difference
It relates to, needs to carry out complicated calculation of deflection, and to use nonstandard short tooth gear.Design is complicated, and matching requirements are high, and designs
Or installation slightly interference between the improper tooth top that this may result in inside and outside gear and root fillet, internal gear pair involute
Radial interference etc. in interference, profile overlap interference and processing and manufacturing.Opposite sliding is serious between the gear teeth in engagement process, produces
Heat amount is more, and energy loss is big.For cycloidal type little tooth difference speed reducer, Cycloid tooth profile is complicated, and the gear teeth are needed using dedicated
Lathe grinding, machining accuracy is difficult to ensure, processing difficulties and with high costs, therefore is mainly used in precision drive field.For
Harmonic speed reducer, flexbile gear category thin-wall part, manufacturing cost is high, complex process.Flexbile gear constantly generates high frequency distortions in transmittance process,
It is easy to cause fatigue rupture, therefore the service life is not grown.
Utility model content
In view of the above-mentioned problems, the utility model provides a kind of fewer differential teeth planetary line gear retarder, the utility model has
It is compact-sized, transmission continuous and stable, without Undercutting Phenomenon, manufacturing cost low power loss is small the advantages that.
A kind of fewer differential teeth planetary line gear retarder, including body, motivation transfer motion part, internal body are in retarder
Chamber, motivation transfer motion part are installed on intracavitary in retarder；Motivation transfer motion part includes input shaft, output shaft, excentric sleeve, duplex
Line gear in outer line gear, input terminal, line gear, counterweight in output end, input shaft are installed on body, excentric sleeve installation
In on input shaft, the outer line gear of duplex is installed on excentric sleeve by rotary arm bearing, and two of the excentric sleeve on input shaft
Counterweight is arranged in end, and line gear is fixed on internal body in input terminal, the right end of line gear and the outer line gear of duplex in input terminal
Engaging few teeth difference internal messing line gear pair in a pair；Output shaft is installed on internal body and stretches out from the left end of body, output
Axis inner end is equipped with line gear in output end, and the left end engaging of line gear and the outer line gear of duplex lacks tooth in a pair in output end
Poor internal messing line gear pair.
Preferably, the outer line gear of duplex, line gear in input terminal, line gear is based on spatial conjugation curve in output end
The line gear of the theory of engagement, line gear include wheel body and line tooth, and line tooth is set to the lateral surface of wheel body.
Preferably, the wheel body of the outer line gear of duplex includes wheel body left end and wheel body right end, on wheel body left end and wheel body right end
It is all provided with wired tooth.
Preferably, the number of teeth of line gear is more than or equal to 1.
Preferably, the number of teeth difference of few teeth difference internal messing line gear pair is 1~4 tooth.
Preferably, the right end number of teeth of the outer line gear of duplex is 7, and the left end number of teeth of the outer line gear of duplex is 8, input terminal interior lines
The number of teeth of gear is 8, and the number of teeth of line gear is 9 in output end.
Preferably, body includes base and cover, and cover is fastened at the right-end openings of base, left end cap and right end cap point
The two sides of body it are not fixed on by screw with by reduction gearbox bore seal.
Preferably, input shaft both ends pass through bearing respectively and are installed on base and cover, and cover is stretched out in input shaft outer end；It is defeated
Enter line gear in holding to be fixedly connected by screw with base, cover；Output shaft is installed on base by bearing, output shaft outer end
Stretch out base；Line gear is fixed on output shaft by installation end and screw in output end, the installation end of line gear in output end
Bearing is equipped between inboard wall of base.
The utility model has the beneficial effects that
1. designing, being easy for installation；Compared with involute planetary, fewer differential teeth planetary line gear retarder is not
It needs to carry out complicated gear modification design to calculate, it is only necessary to which arc-shaped flank profil can be used in design lines gear-profile parameter, line tooth, ginseng
Number is few, and design is easy；And line gear engagement is that point contact engages, relatively low to assembly precision requirement, and installation is easy.
2. manufacturing cost is low；The line gear minimum number of teeth that fewer differential teeth planetary line gear retarder uses can be designed as 1, can
Optional tooth number is selected the processing conditions such as to cut without being cut, push up by root and limited, the limitation of breakthrough involute gear minimum number of teeth；It is different
Line gear processing between flank profil does not need to carry out lathe cumbersome adjustment, according to the designed correspondingly configured milling cutter of tooth Profile Design
And routinely processing can be completed in line gear machine-tooled method, it is quick that the processing is simple, and cost substantially reduces.
3. transmission performance is good；Planetary gear exists simultaneously rotation and revolution motion in planetary reducer, by gear tooth
Between opposite sliding caused by energy；Lose even more serious, the heat of generation is more；And use line gear for point in the utility model
Contact engaged transmission, engagement process line between cog sliding ratio are 0, i.e. line between cog is equivalent to pure rolling mesh, therefore without opposite sliding
Flank of tooth destruction is small, and energy loss is lower and noise is small.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of fewer differential teeth planetary line gear retarder.
Fig. 2 is the kinematic sketch of mechanism of the utility model embodiment.
Fig. 3 is the line gear spatial conjugate coordinate system schematic diagram of the utility model embodiment.
Fig. 4 is the concave-convex arc flank profil schematic diagram of the utility model embodiment.
Fig. 5 is a kind of diagrammatic cross-section of fewer differential teeth planetary line gear retarder line gear pair.
Fig. 6 is a kind of overall appearance figure of fewer differential teeth planetary line gear retarder.
Wherein, 1- base, 2- input shaft, 3- left end cap, 4- output shaft, 5- bearing, 6- rotary arm bearing, 7- output end interior lines
Gear, the outer line gear of 8- duplex, line gear in 9- input terminal, 10- cover, 11- excentric sleeve, 12- counterweight.
Specific embodiment
The utility model is further illustrated with reference to the accompanying drawing.
As shown in Figure 1, a kind of fewer differential teeth planetary line gear retarder includes body, motivation transfer motion part.Power transmission part
Point including line gear, counterweight in line gear in input shaft, excentric sleeve, the outer line gear of duplex, input terminal, output end.Input
Axis is installed on base and cover, and input shaft both ends are supported by bearing.Excentric sleeve, duplex outside line tooth are installed on input shaft
It is eccentrically mounted on input shaft by rotary arm bearing to take turns both ends.Due in the rotation process of input shaft, the outer line gear of duplex with
The eccentrically mounted generation unbalanced moments of input shaft, thus the excentric sleeve on input shaft both ends be arranged counterweight, with
Eccentric moment in balance rotation process.Line gear is bolted on together with base, cover in input terminal.Input terminal
The right end engagement of interior line gear and the outer line gear of duplex.Output shaft is installed on the left side of base, and output shaft is installed on by bearing
On base.Line gear in the fixed output end of installation end that output shaft inner end passes through line gear in screw and output end, in output end
Bearing is equipped between interior line gear and the inner wall up and down of base.And the left end of line gear and the outer line gear of duplex is nibbled in output end
It closes.Cover is fastened at the right-end openings of base, and the left and right sides of base is fixed by end cap and screw.End cap includes left end cap
And right end cap.
Line gear in the outer line gear of duplex, input terminal, line gear is a kind of to be engaged based on spatial conjugation curve in output end
The line gear of principle；The active exposure line of the line gear is a circular helix, and major parameter includes radius of spin m and screw pitch
Parameter n, ts, teFor the value range of helix.According to conjugate curves theory of engagement υ12β=0 can be derived to be connect with active
Touch the driven Contact line equations of line conjugation, in which: υ12For the speed of related movement at meshing point, β is the main method of active contact line
Arrow；Parametric equation is as follows:
Driven contact line is also a circular helix, and i is transmission ratio, and parametric equation is as follows:
The line gear belongs to the prior art.Line gear is made of wheel body and line tooth two parts, and line tooth is set to the outside of wheel body
Face, minimum number of teeth can be designed as 1 (namely being more than or equal to 1), without Undercutting Phenomenon；Since the contact line of line gear is space
Other space curves also may be selected as contact in addition to the circular helix that the design selects in curve, therefore flexible design multiplicity
Line, such as conical spiral, spiral of Archimedes etc. can according to need and chosen；Few teeth difference internal messing line gear pair,
Seldom, number of teeth difference is 1~4 tooth, inner, external wire gear pair phase during engaged transmission to the number of teeth difference of its inner, external wire gear
It is identical to the direction of motion of input shaft.
The wheel body of the outer line gear of duplex includes wheel body left end and wheel body right end, is all provided on wheel body left end and wheel body right end wired
Tooth.
Pass through the continuous engaged transmission of line tooth between outer line gear and interior line gear.The outer line gear left end of duplex and right end difference
Equipped with line tooth, they are meshed with line gear in line gear in input terminal and output end respectively, form two pairs of few teeth difference internal messings
Line gear pair, and be eccentrically mounted on input shaft by excentric sleeve and rotary arm bearing.
When work, the output shaft of prime mover is connected by shaft coupling with input shaft, thus power inputs.It is driven in input shaft
Under, the outer line gear of duplex makees revolution motion around input shaft centre line, while the outer line gear of duplex makees spinning motion around own axes,
The resultant motion of revolution and rotation drives line gear revolution in output end, and is exported outward according to the transmission ratio of setting by output shaft
Movement and power.Line gear engages with the outer line gear of duplex and output power is passed to output shaft in output end, and output shaft is again
It is connected by shaft coupling with working machine, realizes power by the transmitting of prime mover to working machine.
It is the kinematic sketch of mechanism of the present embodiment such as Fig. 2, the outer line gear right end of duplex and left end number of gear teeth are respectively
z1、z2, input terminal and output end interior lines number of gear teeth are respectively z3、z4, the transmission ratio of the retarder are as follows:Z in this example1=7, z2=8, z3=8, z4=9, transmission ratio i=-63.Transmission ratio is negative value,
Input speed is opposite with output rotary speed direction.
As shown in figure 3, establishing fixed coordinate system o-xyz and op-xpypzp, wherein o is the origin of coordinate system o-xyz, position
In on the central axis of excentric sleeve, opFor coordinate system op-xpypzpOrigin, be located at input shaft non-eccentricity shaft part axis on.op
An eccentricity is translated along negative direction of the x-axis by o point to obtain.Coordinate system o1-x1y1z1、o2-x2y2z2、o3-x3y3z3、o4-x4y4z4Point
Not Wei gear 1,2,3,4 with moving coordinate system, their z-axis with gear rotation axis coincident.
M is taken in the present embodiment1=28, m2=32, n1=n2=15, each gear line tooth contact line is respectively with moving coordinate system
Under expression formula be respectively as follows:
Outer line gear 1 is engaged with line gear 3 in input terminal, registration by parameter of curve t value range and driving wheel
The number of teeth codetermines, registrationLine gear 2 is engaged with line gear 4 in output end, registrationThe contact line eccentricity of inner, external wire gear is 4mm.
As shown in figure 4, establishing plane right-angle coordinate P-xy, P is meshing point, and x-axis forward direction is active contact line pair method arrow
Negative direction, y-axis forward direction is identical as the main direction of normal of active exposure line.Heavy line part is that the line tooth of line gear pair is actively connecing
Touch the profile on the normal plane on line at meshing point P.It takes two phase inscribe circular arcs in the segmental arc at its point of contact both ends P respectively, obtains
Convex arc and concave arc line flank profil shape；About symmetrical axial symmetry, the symmetry axis is parallel for the left side of convex arc and concave arc line flank profil shape, right side
In y-axis.Define flank profil between two intersection point of x-axis at a distance from be the facewidth.Then convex arc tooth profile parameter mainly includes arc radius ρ1, the facewidth
Coefficient c1And height of teeth top ha1；Concave arc tooth profile parameter mainly includes arc radius ρ2, coefficient of facewidth c2And height of teeth top hf2.Tooth
Wide parameter is few, and design is convenient.Line tooth depends on wheel body, wherein sectional view such as Fig. 5 institute of the internal messing line gear pair at import and export end
Show, wherein ωiFor the revolving speed of input shaft, ωoFor the revolving speed of output shaft, ωmFor the rotational velocity of line gear outside duplex.
As shown in fig. 6, the overall appearance cabinet of retarder does not make two-piece unit formula, structure is simple, easy to process.Cabinet,
Case lid, input, output shaft end cap and sealing element are bolted to form closed retarder inner cavity.Motivation transfer motion part peace
It is intracavitary in retarder.
Above-described embodiment is the preferable embodiment of utility model, but the embodiments of the present invention is not by above-mentioned reality
Apply the limitation of example, it is made under other any spiritual essence and principles without departing from the utility model change, modification, substitution,
Combination simplifies, and should be equivalent substitute mode, is included within the protection scope of the utility model.
Claims (8)
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821068142.1U CN208858869U (en) | 2018-07-06 | 2018-07-06 | A planetary gear reducer with small tooth difference |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821068142.1U CN208858869U (en) | 2018-07-06 | 2018-07-06 | A planetary gear reducer with small tooth difference |
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| CN208858869U true CN208858869U (en) | 2019-05-14 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108679167A (en) * | 2018-07-06 | 2018-10-19 | 华南理工大学 | A kind of fewer differential teeth planetary line gear retarder |
| CN110360274A (en) * | 2019-07-22 | 2019-10-22 | 孙金曦 | Planetary speed reducer with small tooth number difference |
| CN110555254A (en) * | 2019-08-22 | 2019-12-10 | 天津大学 | Method for reducing out-of-plane vibration instability of permanent magnet motor by grouping magnetic poles |
| CN111577840A (en) * | 2020-05-19 | 2020-08-25 | 于永利 | Internal-meshing planetary gear type output power amplifier |
| CN111577841A (en) * | 2020-05-19 | 2020-08-25 | 于永利 | External-engagement planetary gear type output power amplifier |
| CN111577839A (en) * | 2020-05-19 | 2020-08-25 | 于永利 | Planet wheel type output power amplifier |
| US12060923B2 (en) | 2021-09-24 | 2024-08-13 | Delta Electronics, Inc. | Speed reducer |
-
2018
- 2018-07-06 CN CN201821068142.1U patent/CN208858869U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108679167A (en) * | 2018-07-06 | 2018-10-19 | 华南理工大学 | A kind of fewer differential teeth planetary line gear retarder |
| CN108679167B (en) * | 2018-07-06 | 2024-05-14 | 华南理工大学 | Planetary line gear reducer with small tooth difference |
| CN110360274A (en) * | 2019-07-22 | 2019-10-22 | 孙金曦 | Planetary speed reducer with small tooth number difference |
| CN110555254A (en) * | 2019-08-22 | 2019-12-10 | 天津大学 | Method for reducing out-of-plane vibration instability of permanent magnet motor by grouping magnetic poles |
| CN111577840A (en) * | 2020-05-19 | 2020-08-25 | 于永利 | Internal-meshing planetary gear type output power amplifier |
| CN111577841A (en) * | 2020-05-19 | 2020-08-25 | 于永利 | External-engagement planetary gear type output power amplifier |
| CN111577839A (en) * | 2020-05-19 | 2020-08-25 | 于永利 | Planet wheel type output power amplifier |
| US12060923B2 (en) | 2021-09-24 | 2024-08-13 | Delta Electronics, Inc. | Speed reducer |
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