CN111306259A - Planetary gear reducer with load balancing mechanism - Google Patents
Planetary gear reducer with load balancing mechanism Download PDFInfo
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- CN111306259A CN111306259A CN202010221569.6A CN202010221569A CN111306259A CN 111306259 A CN111306259 A CN 111306259A CN 202010221569 A CN202010221569 A CN 202010221569A CN 111306259 A CN111306259 A CN 111306259A
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- gear
- planetary gear
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- planetary
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
- F16H1/2809—Toothed gearings for conveying rotary motion with gears having orbital motion with means for equalising the distribution of load on the planet-wheels
- F16H1/2818—Toothed gearings for conveying rotary motion with gears having orbital motion with means for equalising the distribution of load on the planet-wheels by allowing limited movement of the ring gear relative to the casing or shaft
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
- F16H1/2809—Toothed gearings for conveying rotary motion with gears having orbital motion with means for equalising the distribution of load on the planet-wheels
- F16H1/2827—Toothed gearings for conveying rotary motion with gears having orbital motion with means for equalising the distribution of load on the planet-wheels by allowing limited movement of the planet carrier, e.g. relative to its shaft
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/08—General details of gearing of gearings with members having orbital motion
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
The invention discloses a planetary gear reducer with a load balancing mechanism, which consists of the planetary gear reducer and the load balancing mechanism, wherein the load balancing mechanism adopts an elastic bushing which is sleeved between a gear ring and the radial direction of a shell, and the gear ring is connected with the axial direction of the shell through an elastic positioning pin to realize the radial elastic displacement of the gear ring, or the elastic bushing is sleeved between a planet carrier and the radial direction of a planet carrier bearing to realize the radial elastic displacement of the planet carrier; the elastic bushing is made of metal and consists of an annular bushing frame and a bushing skin covering the outer surface of the annular bushing frame, the annular bushing frame is formed by axially printing layer by layer through a 3D printer, and hexahedral frame units which are sequentially and uniformly arranged are contained in the annular bushing frame; the hexahedral frame unit is a planar hexahedral frame unit or a recessed hexahedral frame unit. The load balancing mechanism is arranged in the limited inner space of the hub reduction gear, and the gear ring or the planet carrier is enabled to float in the radial direction, so that the purpose of load balancing is achieved.
Description
Technical Field
The invention belongs to the technical field of electric automobile speed reducer design, and particularly relates to a planetary gear speed reducer with a load balancing mechanism.
Background
Planetary gear reducers are often used as reducers for electric vehicles due to their compact structure and coaxial input and output. For a traditional speed reducer without a load balancing mechanism, a gear ring can be directly fixed on a shell of the speed reducer. At this moment, because assembly error or manufacturing error scheduling problem, the radial force that each planet wheel transmission that the ring gear received is all inequality, and this will lead to the effort between certain planet wheel and the ring gear too big, produces excessive wearing and tearing, and then leads to reduction gear life to be less than expectation.
The existing load balancing technology is designed to float for the planet wheels so as to realize the absorption of the radial force of the planet wheels and achieve the purpose of average load, but for the hub reduction gear, the size of the planet wheels is smaller, the space in the reduction gear is more compact, the load balancing mechanism for realizing the floating of the planet wheels is not easy to place, and the purpose of average load cannot be achieved.
Disclosure of Invention
In view of the above-mentioned drawbacks in the prior art, the present invention provides a planetary gear reducer with a load balancing mechanism, wherein the load balancing mechanism is disposed in the limited inner space of the hub reduction gear, and the purpose of load balancing is achieved by making the gear ring or the planet carrier float in the radial direction. The technical scheme of the invention is as follows by combining the attached drawings of the specification:
a planetary gear reducer with a load balancing mechanism comprises a planetary gear reducing mechanism and a load balancing mechanism, wherein the planetary gear reducing mechanism comprises a shell, a sun gear, a duplex planetary gear, a planetary carrier and a gear ring, wherein the duplex planetary gear is arranged on the planetary carrier through a planetary gear shaft, a primary gear of the duplex planetary gear is meshed and connected with the outer side of the sun gear, the outer side of a secondary gear of the duplex planetary gear is meshed and connected with the gear ring, the outer sides of two ends of the planetary carrier are matched and arranged with the shell through a planetary carrier bearing, power is input through the sun gear, then is transmitted through the duplex planetary gear and the gear ring in sequence, and finally is coaxially output through the planetary carrier;
the load balancing mechanism adopts an elastic bushing which is sleeved between the gear ring and the shell in the radial direction, and the gear ring is connected with the shell in the axial direction through an elastic positioning pin;
the elastic bushing is made of metal and consists of an annular bushing frame and a bushing skin covering the outer surface of the annular bushing frame, the annular bushing frame is formed by axially printing layer by layer through a 3D printer, and hexahedral frame units which are sequentially and uniformly arranged are contained in the annular bushing frame;
a planetary gear reducer with a load balancing mechanism comprises a planetary gear reducing mechanism and a load balancing mechanism, wherein the planetary gear reducing mechanism comprises a shell, a sun gear, a duplex planetary gear, a planetary carrier and a gear ring, wherein the duplex planetary gear is arranged on the planetary carrier through a planetary gear shaft, a primary gear of the duplex planetary gear is meshed and connected with the outer side of the sun gear, the outer side of a secondary gear of the duplex planetary gear is meshed and connected with the gear ring, the outer sides of two ends of the planetary carrier are matched and arranged with the shell through a planetary carrier bearing, power is input through the sun gear, then is transmitted through the duplex planetary gear and the gear ring in sequence, and finally is coaxially output through the planetary carrier;
the load balancing mechanism adopts an elastic bushing which is sleeved between the planet carrier and the planet carrier bearing in the radial direction;
the elastic bushing is made of metal and comprises an annular bushing frame and a bushing skin covering the outer surface of the annular bushing frame, the annular bushing frame is formed by printing the annular bushing frame layer by layer along the axial direction through a 3D printer, and hexahedron frame units which are sequentially and uniformly arranged are contained in the annular bushing frame.
A planetary gear reducer with a load balancing mechanism comprises a planetary gear reducing mechanism and a load balancing mechanism, wherein the planetary gear reducing mechanism comprises a shell, a sun gear, a duplex planetary gear, a planetary carrier and a gear ring, wherein the duplex planetary gear is arranged on the planetary carrier through a planetary gear shaft, a primary gear of the duplex planetary gear is meshed and connected with the outer side of the sun gear, the outer side of a secondary gear of the duplex planetary gear is meshed and connected with the gear ring, the outer sides of two ends of the planetary carrier are matched and arranged with the shell through a planetary carrier bearing, power is input through the sun gear, then is transmitted through the duplex planetary gear and the gear ring in sequence, and finally is coaxially output through the planetary carrier;
the load balancing mechanism adopts an elastic bushing which is sleeved between the gear ring and the shell in the radial direction, and the gear ring is connected with the shell in the axial direction through an elastic positioning pin; the elastic bush is also sleeved between the planet carrier and the radial direction of the planet carrier bearing;
the elastic bushing is made of metal and comprises an annular bushing frame and a bushing skin covering the outer surface of the annular bushing frame, the annular bushing frame is formed by printing the annular bushing frame layer by layer along the axial direction through a 3D printer, and hexahedron frame units which are sequentially and uniformly arranged are contained in the annular bushing frame.
Furthermore, the hexahedral frame unit is a planar hexahedral frame unit, the outer contour of the hexahedral frame unit is a regular hexahedral frame consisting of twelve outer prismatic straight bars, and two diagonal straight bars are arranged on two diagonal lines of each surface of the regular hexahedral frame.
Furthermore, the hexahedral frame unit is a concave hexahedral frame unit, the outer contour of the hexahedral frame unit is a concave hexahedral frame consisting of twelve external concave bars, the external concave bars are bent inwards at the middle positions, diagonal concave bars are arranged on two diagonal corners of each surface of the internal concave hexahedral frame, the diagonal concave bars are bent inwards at the middle positions, the middle bending points of the two diagonal concave bars corresponding to each surface are intersected at one point, a unit connecting rod is perpendicularly arranged outwards at the intersection point position of the two diagonal concave bars corresponding to each surface, and two adjacent internal concave hexahedral frame units are connected through the unit connecting rods.
Compared with the prior art, the invention has the beneficial effects that:
1. the planetary gear reducer adopts the elastic bush as the load balancing mechanism, can be arranged between the gear ring and the shell to ensure that the gear ring floats and reduce the abrasion between the gear ring and the secondary gear of the duplex planet gears with smaller size so as to realize the load balancing purpose, and can also be arranged between the planet carrier and the bearing for mounting the planet carrier to ensure that the planet carrier floats and balance the stress of the three duplex planet gears so as to achieve the load balancing purpose, the load balancing mechanism is easy to arrange, and the mounting space is effectively saved.
2. The planetary gear reducer can simultaneously install the elastic bushings between the gear ring and the shell and between the planet carrier and the bearing for installing the planet carrier, the two groups of elastic bushings simultaneously generate displacement, the relative displacement of the gear ring and the planet carrier is the sum of the respective displacements, and larger displacement can compensate larger errors.
3. The elastic bushing adopted in the planetary gear reducer enables the metal elastic bushing manufactured by a 3D printing technology to have higher rigidity, can generate larger force under the conditions of compensating the same error and generating the same elastic deformation, and is suitable for the reducer with higher transmission torque; meanwhile, the 3D printing metal bushing has the advantages of oil resistance and high temperature resistance, and can adapt to the high-temperature environment of a high-speed motor.
4. The inner side of the elastic bushing adopted in the planetary gear reducer is the metal plane hexahedral frame unit, when two surfaces of the hexahedral frame unit receive pressure, the other four surfaces can freely expand to the surrounding gaps, and due to the existence of the gaps, the elasticity of metal is enhanced, so that the bushing can generate larger deformation to carry out uniform load.
5. The inner side of the elastic bushing adopted in the planetary gear reducer can also be a concave hexahedral frame unit made of metal materials to form a negative Poisson's ratio structural material, when the negative Poisson's ratio structural material is pressed in one direction, the rest surfaces are all shrunk inwards, so that the instantaneous density of the elastic bushing is increased, and the elastic bushing can provide certain deformation and play a certain supporting role, and is more suitable for a large-scale speed reducing mechanism with larger transmission torque.
Drawings
FIG. 1 is a schematic view of an embodiment of a planetary gear reducer with a load balancing mechanism according to the present invention;
FIG. 2 is a schematic view of another embodiment of a planetary gear reducer with a load balancing mechanism according to the present invention;
FIG. 3 is a schematic diagram of the transmission principle with the load balancing mechanism according to the present invention;
FIG. 4 is an exploded view of the load balancing mechanism in cooperation with the ring gear and the housing case in the planetary gear reducer according to the present invention;
FIG. 5 is a schematic partial cross-sectional view of an elastic bush as a load balancing mechanism in the planetary gear reducer according to the present invention;
fig. 6 is a perspective view illustrating a rectangular hexahedral frame unit constituting the elastic bushing of fig. 5;
FIG. 7a is a front view of the parallelepiped frame unit of FIG. 6;
FIG. 7b is a left side view of the parallelepiped frame unit of FIG. 6;
FIG. 7c is a top view of the parallelepiped frame unit of FIG. 6;
FIG. 8 is a perspective view illustrating a recessed hexahedral frame unit constituting the elastic bush in the planetary gear reducer according to the present invention;
in the figure:
1-shell, 2-front planet carrier, 3-rear planet carrier, 4-sun gear,
5-duplex planet wheel primary gear, 6-duplex planet wheel secondary gear, 7-elastic bush, 8-gear ring,
9-planet wheel shaft, 10-elastic locating pin;
7 a-a first elastic bushing, 7 b-a second elastic bushing, 7 c-a third elastic bushing;
701-lining skin, 702-hexahedral frame unit;
7021-outer prismatic straight rods, 7022-diagonal straight rods, 7023-unit connecting rods, 7024-outer prismatic concave rods,
7025-diagonal concave bar.
Detailed Description
For clearly and completely describing the technical scheme and the specific working process thereof, the specific implementation mode of the invention is as follows by combining the attached drawings of the specification:
example 1:
as shown in fig. 1, this embodiment 1 discloses a planetary gear reducer with a load balancing mechanism, which is composed of a planetary gear reduction mechanism and a load balancing mechanism.
The planetary gear reducer includes: the planetary gear set comprises a shell 1, a planet carrier, a sun gear 4, a duplex planet gear, a gear ring 8 and a planet gear shaft 9. The planet carrier is a combined planet carrier and is formed by fixedly connecting a front planet carrier 2 and a rear planet carrier 3 through a bolt connecting piece after being butted and combined; the duplex planet wheel is formed by coaxially and integrally arranging a duplex planet wheel primary gear 5 and a duplex planet wheel secondary gear 6 in front and back.
Bearings are respectively arranged on the outer circumferential side walls of the front planet carrier 2 and the rear planet carrier 3, and the front planet carrier 2 and the rear planet carrier 3 are arranged on the inner side of the shell 1 through the bearings; three axial mounting grooves are uniformly formed in the rear end face of the front planet carrier 2 along the circumferential direction of the planet carrier, correspondingly, three axial mounting grooves are uniformly formed in the front end face of the rear planet carrier 3 along the circumferential direction of the planet carrier, and two ends of the three planet wheel shafts 9 are respectively and correspondingly mounted in the corresponding matched mounting grooves of the front planet carrier 2 and the rear planet carrier 3; the sun gear 4 and the duplex planet gear are both arranged in a space formed between the front planet carrier 2 and the rear planet carrier 3; a plurality of groups of bearings are sleeved on the middle section of the planet wheel shaft 9, and the duplex planet wheel is rotatably arranged on the planet wheel shaft 9 through the plurality of groups of bearings; the three duplex planet wheels are respectively arranged on the planet carrier through the planet wheel shaft 9; the sun gear 4 is arranged in the middle of the inner sides of the three duplex planet gears and is simultaneously meshed with the primary gears 5 of the duplex planet gears of the three duplex planet gears; the gear ring 8 is sleeved on the outer sides of the three duplex planet gears and is meshed with the secondary gears 6 of the duplex planet gears of the three duplex planet gears.
In the planetary gear speed reducing mechanism, as shown in fig. 3, power is input through the sun gear 4, the sun gear 4 rotates in the forward direction to drive the duplex planetary gear primary gear 5 to rotate in the reverse direction, and further drive the duplex planetary gear secondary gear 6 to rotate in the reverse direction, the duplex planetary gear secondary gear 6 is meshed with the gear ring 8, and because the gear ring 8 is relatively fixed, according to the transmission characteristic of the planetary gear train, the three duplex planetary gear secondary gears 6 revolve along the gear ring 8 while rotating along the self axis, and further drive the planetary carrier to rotate, and finally, the power is output through the front planetary carrier.
As shown in fig. 2 and 4, the load balancing mechanism includes an elastic bushing 7 and an elastic positioning pin 10. Elastic bushing 7 suit is between the lateral wall of ring gear 8 and the inside wall of casing 1, wherein, evenly open along the circumferencial direction on the terminal surface of ring gear 8 front end flange has a plurality of axial pinhole, and it has a plurality of corresponding axial pinholes to open along the terminal surface in the annular of casing 1, elastic bushing 7 suit is on the telescopic lateral wall of ring gear 8 rear end, and further install along inboard in the annular of casing 1 again to make elastic bushing 7 install between ring gear 8 and casing 1, and the rear end face top pressure of ring gear 8 front end flange is on the preceding terminal surface of casing 1 annular edge, and through a plurality of elastic locating pins 10 with ring gear 8 and casing 1 relatively fixed.
The elastic positioning pin 10 is made of metal, an axial opening direction on a side wall of the elastic positioning pin is directly opposite to a direction in which the gear ring 8 is tangent to the shell 1 along the radial direction, so that the relative rotation between the gear ring 8 and the shell 1 is limited, and the elastic positioning pin 10 has elastic deformation in the radial displacement direction of the gear ring 8 and the shell 1.
As shown in fig. 5, the elastic bushing 7 is made of metal and is composed of an annular bushing frame and a bushing skin 701 covering the outer surface of the annular bushing frame.
The annular bushing frame is formed by a plurality of hexahedral frame units 702 which are sequentially arranged adjacently; as shown in fig. 6, 7a, 7b and 7c, the hexahedral frame unit 702 is a planar hexahedral frame unit, the outer contour of which is a regular hexahedral frame composed of twelve outer prismatic straight bars 7021, and two diagonal straight bars 7022 are provided on two diagonal lines of each surface of the regular hexahedral frame; when the planar hexahedral frame unit is stressed in the directions of two surfaces, the rest four surfaces can freely expand towards the surrounding gaps, and due to the existence of the gaps, the elasticity of the metal annular bushing frame is enhanced, so that the bushing can generate larger deformation to carry out uniform load.
The annular bushing frame is printed layer by layer along the axial direction through a 3D printing technology, and one hexahedral frame unit 702 is used as one printing period along the axial direction, and printing is performed according to the specific axial size of the annular bushing frame, so that the annular bushing frame can be a plurality of complete hexahedral frame unit layers or incomplete hexahedral frame unit layers along the axial direction.
The elastic bush 7 is formed by covering a metal bush skin 701 on the outer surface of the ring bush frame after the 3D printing.
Install elastic bushing 7 between ring gear 8 and casing 1 are radial and have certain elasticity for in the meshing transmission process of duplex planet wheel secondary gear 6 and ring gear 8, through the radial displacement between ring gear 8 and the casing 1, realized ring gear 8's radial unsteady, in order to reach the purpose of all carrying, effectively reduce the wearing and tearing between duplex planet wheel secondary gear 6 and the ring gear 8, prolong the practical life of reduction gear.
Example 2:
as shown in fig. 1, the present embodiment 2 discloses a planetary gear reducer with a load balancing mechanism, which is composed of a planetary gear reduction mechanism and a load balancing mechanism.
In this embodiment 2, the planetary gear speed reduction mechanism is completely the same as that in embodiment 1, and the composition and the installation position of the load balancing mechanism are completely the same as those in embodiment 1, and thus the details are not repeated here.
The difference from embodiment 1 is that the hexahedral frame unit 702 constituting the annular bushing frame is a recessed hexahedral frame unit, as shown in fig. 8, the outer contour of the recessed hexahedral frame unit is a recessed hexahedral frame composed of twelve outer edge concave bars 7024, the outer edge concave bars 7024 are bent inward at the middle positions, diagonal concave bars 7025 are provided on two diagonal corners of each surface of the recessed hexahedral frame, the diagonal concave bars 7025 are bent inward at the middle positions, the middle bending points of the two diagonal concave bars 7025 corresponding to each surface intersect at one point, a unit connecting bar 7023 is provided at the intersection point of the two diagonal concave bars 7025 corresponding to each surface, the unit connecting bar 7023 is provided outward perpendicular to the inner surface, and two adjacent recessed hexahedral frame units are connected by the unit connecting bar 7023. The concave hexahedral frame unit is of a negative Poisson's ratio structure, when the concave hexahedral frame unit is pressed in one direction, other surfaces are all shrunk inwards, so that the instantaneous density of the elastic bushing 7 formed by the concave hexahedral frame unit is increased, the elastic bushing can provide certain deformation to achieve the purpose of uniform loading, can play a certain supporting role, and is very suitable for large-scale speed reducing mechanisms with large transmission torque.
Example 3:
as shown in fig. 2, the present embodiment 3 discloses a planetary gear reducer with a load balancing mechanism, which is composed of a planetary gear reduction mechanism and a load balancing mechanism.
In embodiment 3, in the planetary gear speed reducing mechanism, the ring gear 8 is fixedly connected with the housing 1, and the rest of the structure of the planetary gear speed reducing mechanism is the same as that of embodiment 1, and is not described again here.
The load balancing mechanism is composed of two elastic bushings 7, namely a second elastic bushing 7b and a third elastic bushing 7c, the two elastic bushings 7 are respectively installed on the outer circumferential side face of the front end and the rear end of the planet carrier, wherein the second elastic bushing 7b is sleeved and installed between the front planet carrier 2 and the outer side bearing inner ring of the front planet carrier 2, and the third elastic bushing 7c is sleeved and installed between the rear planet carrier 3 and the outer side bearing inner ring of the rear planet carrier 3.
The elastic bush 7 is of the elastic bush structure described in embodiment 1 or embodiment 2.
The elastic bush arranged between the planet carrier and the planet carrier bearing has certain elasticity, and the radial floating of the planet carrier is realized through the radial displacement between the planet carrier and the planet carrier bearing in the process that the duplex planet gears drive the planet carrier to rotate, thereby balancing the stress of the three duplex planet gears to achieve the purpose of uniform load,
example 4:
as shown in fig. 2, the present embodiment 4 discloses a planetary gear reducer with a load balancing mechanism, which is composed of a planetary gear reduction mechanism and a load balancing mechanism.
In embodiment 3, the planetary gear speed reduction mechanism is completely the same as embodiment 1, and is not described again here.
The load balancing mechanism consists of three elastic bushings 7 and a plurality of elastic positioning pins 10. The first elastic bushing 7a and the plurality of elastic positioning pins 10 are correspondingly installed between the gear ring 8 and the housing 1, and the installation position and the installation relationship of the first elastic bushing 7a and the plurality of elastic positioning pins 10 are the same as those of the elastic bushing 7 and the elastic positioning pins 10 in embodiment 1; the second elastic bush 7b and the third elastic bush 7c are correspondingly installed between the planet carrier and the planet carrier bearing, and the installation position and the installation relationship thereof are the same as those of the second elastic bush 7b and the third elastic bush 7c in embodiment 3, and the description thereof is omitted.
The elastic positioning pin 10 adopts the elastic positioning pin described in embodiment 1;
the elastic bush 7 is of the elastic bush structure described in embodiment 1 or embodiment 2.
Claims (5)
1. The utility model provides a planetary gear reducer with load balancing mechanism, by planetary gear reduction mechanism with load balancing mechanism constitutes its characterized in that:
the planetary gear speed reducing mechanism comprises a shell, a sun gear, a duplex planetary gear, a planetary carrier and a gear ring, wherein the duplex planetary gear is arranged on the planetary carrier through a planetary gear shaft, a primary gear of the duplex planetary gear is meshed and connected with the outer side of the sun gear, the outer side of a secondary gear of the duplex planetary gear is meshed and connected with the gear ring, the outer sides of two ends of the planetary carrier are matched and arranged with the shell through a planetary carrier bearing, and power is input through the sun gear, transmitted through the duplex planetary gear and the gear ring in sequence and finally coaxially output through the planetary carrier;
the load balancing mechanism adopts an elastic bushing which is sleeved between the gear ring and the shell in the radial direction, and the gear ring is connected with the shell in the axial direction through an elastic positioning pin;
the elastic bushing is made of metal and comprises an annular bushing frame and a bushing skin covering the outer surface of the annular bushing frame, the annular bushing frame is formed by printing the annular bushing frame layer by layer along the axial direction through a 3D printer, and hexahedron frame units which are sequentially and uniformly arranged are contained in the annular bushing frame.
2. The utility model provides a planetary gear reducer with load balancing mechanism, by planetary gear reduction mechanism with load balancing mechanism constitutes its characterized in that:
the planetary gear speed reducing mechanism comprises a shell, a sun gear, a duplex planetary gear, a planetary carrier and a gear ring, wherein the duplex planetary gear is arranged on the planetary carrier through a planetary gear shaft, a primary gear of the duplex planetary gear is meshed and connected with the outer side of the sun gear, the outer side of a secondary gear of the duplex planetary gear is meshed and connected with the gear ring, the outer sides of two ends of the planetary carrier are matched and arranged with the shell through a planetary carrier bearing, and power is input through the sun gear, transmitted through the duplex planetary gear and the gear ring in sequence and finally coaxially output through the planetary carrier;
the load balancing mechanism adopts an elastic bushing which is sleeved between the planet carrier and the planet carrier bearing in the radial direction;
the elastic bushing is made of metal and comprises an annular bushing frame and a bushing skin covering the outer surface of the annular bushing frame, the annular bushing frame is formed by printing the annular bushing frame layer by layer along the axial direction through a 3D printer, and hexahedron frame units which are sequentially and uniformly arranged are contained in the annular bushing frame.
3. The utility model provides a planetary gear reducer with load balancing mechanism, by planetary gear reduction mechanism with load balancing mechanism constitutes its characterized in that:
the planetary gear speed reducing mechanism comprises a shell, a sun gear, a duplex planetary gear, a planetary carrier and a gear ring, wherein the duplex planetary gear is arranged on the planetary carrier through a planetary gear shaft, a primary gear of the duplex planetary gear is meshed and connected with the outer side of the sun gear, the outer side of a secondary gear of the duplex planetary gear is meshed and connected with the gear ring, the outer sides of two ends of the planetary carrier are matched and arranged with the shell through a planetary carrier bearing, and power is input through the sun gear, transmitted through the duplex planetary gear and the gear ring in sequence and finally coaxially output through the planetary carrier;
the load balancing mechanism adopts an elastic bushing which is sleeved between the gear ring and the shell in the radial direction, and the gear ring is connected with the shell in the axial direction through an elastic positioning pin; the elastic bush is also sleeved between the planet carrier and the radial direction of the planet carrier bearing;
the elastic bushing is made of metal and comprises an annular bushing frame and a bushing skin covering the outer surface of the annular bushing frame, the annular bushing frame is formed by printing the annular bushing frame layer by layer along the axial direction through a 3D printer, and hexahedron frame units which are sequentially and uniformly arranged are contained in the annular bushing frame.
4. A planetary gear reducer with load balancing mechanism according to any one of claims 1 to 3, comprising a planetary gear reducer and a load balancing mechanism, wherein:
the hexahedral frame unit is a planar hexahedral frame unit, the outer contour of the hexahedral frame unit is a regular hexahedral frame consisting of twelve outer prismatic straight bars, and two diagonal straight bars are arranged on two diagonal lines of each surface of the regular hexahedral frame.
5. A planetary gear reducer with load balancing mechanism according to any one of claims 1 to 3, comprising a planetary gear reducer and a load balancing mechanism, wherein:
the hexahedral frame unit is an inwards concave hexahedral frame unit, the outer contour of the hexahedral frame unit is an inwards concave hexahedral frame consisting of twelve outer edge concave rods, the outer edge concave rods are bent inwards at the middle positions, diagonal angle concave rods are arranged on two diagonal angles of each top angle of each surface of the inwards concave hexahedral frame unit, the diagonal angle concave rods are bent inwards at the middle positions, the middle bending points of the two diagonal angle concave rods corresponding to each surface are intersected at one point, a unit connecting rod is perpendicularly arranged outwards at the intersection point position of the two diagonal angle concave rods corresponding to each surface, and two adjacent inwards concave hexahedral frame units are connected through the unit connecting rods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010221569.6A CN111306259A (en) | 2020-03-26 | 2020-03-26 | Planetary gear reducer with load balancing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010221569.6A CN111306259A (en) | 2020-03-26 | 2020-03-26 | Planetary gear reducer with load balancing mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN111306259A true CN111306259A (en) | 2020-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010221569.6A Pending CN111306259A (en) | 2020-03-26 | 2020-03-26 | Planetary gear reducer with load balancing mechanism |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113700829A (en) * | 2021-07-22 | 2021-11-26 | 中国北方车辆研究所 | Sliding and rotating buffer device for fixed gear ring of speed reducer |
-
2020
- 2020-03-26 CN CN202010221569.6A patent/CN111306259A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113700829A (en) * | 2021-07-22 | 2021-11-26 | 中国北方车辆研究所 | Sliding and rotating buffer device for fixed gear ring of speed reducer |
| CN113700829B (en) * | 2021-07-22 | 2024-04-26 | 中国北方车辆研究所 | Fixed gear ring slip buffer device of speed reducer |
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