CN210799911U

CN210799911U - Planetary gear driving device with specific lug boss

Info

Publication number: CN210799911U
Application number: CN201921246917.4U
Authority: CN
Inventors: 陈泽进
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-04
Filing date: 2019-08-04
Publication date: 2020-06-19
Anticipated expiration: 2029-08-04

Abstract

The utility model provides a planetary gear drive arrangement of specific boss, includes, the concentric annular boss that the useful screw thread in both sides of internal toothing gear is tied fixedly takes the tooth wheel reference circle to be innermost circle, and the useful screw thread in both sides of planetary gear, sun gear is tied fixedly and is used the gear reference circle to be the concentric circular boss of excircle, and each boss thickness is the same, the utility model has the advantages of it is following: the specific bosses are simple in structure, the reference circles of the gears are tangent, the gear bosses are mutually supported at the tangent points, the rigidity of the planetary gear mechanism and the rigidity of the gears are enhanced, only rolling displacement is generated, sliding displacement is not generated, in addition, the reference circles of the gears are between the tooth root circle and the tooth top circle, when the gears are meshed, the specific bosses can laterally limit the gears, the problems that the planetary gear mechanism is easy to deform, gear teeth are easy to damage, and the gears of the planetary gear mechanism are easy to axially displace are well solved, moreover, the gears of the planetary gear mechanism can be straight gears, complex herringbone teeth or helical gears are not needed, and the machining and manufacturing process is greatly simplified.

Description

Planetary gear driving device with specific lug boss

Technical Field

The utility model relates to a machinery planetary drive field especially relates to a planetary gear drive arrangement of a specific boss that is used for electric vehicle drive wheel and aircraft paddle drive etc..

Background

At present, most of driving modes of domestic and foreign electric heavy-load AGVs (automatic guided vehicles) adopt central motor driving, and power is transmitted to a steering drive axle through a universal joint. According to the number of load-bearing axles, two axles and multiple axles can be divided. The structure type has the advantages of relatively mature technology and small risk; but also has disadvantages: the axle speed reduction ratio that traditional heavy load-carrying vehicle used is lower, with the difficult matching of mainstream high rotational speed's motor in the existing market, can't let the motor work in high-efficient interval, and the angle of turning of tradition steering drive axle is less, and to the heavy load-carrying vehicle that the automobile body is longer, turning radius is great, the inflexibility.

At present, there is the shortcoming to utilize motor direct drive's integration universal wheel to traditional planetary gear direct mount in wheel hub: the radial acting force of the wheel, especially the wheel of a heavy-duty truck, is huge, the planetary gear mechanism is easy to deform, the gear teeth are easy to damage, and each gear of the planetary gear mechanism is easy to generate axial displacement.

The utility model discloses solve the yielding and each gear axial displacement problem of planetary gear mechanism emphatically, innovate the planetary gear drive arrangement of a specific boss for electric vehicle drive wheel and aircraft paddle drive etc..

Disclosure of Invention

Problem to among the prior art, the utility model discloses an aim at solves the yielding and each gear axial displacement problem of planetary gear mechanism, the planetary gear of a specific boss of innovation, the useful screw bolt in both sides of internal toothing gear is fixed promptly and uses the tooth wheel reference circle to be the concentric annular boss of inner circle most, planetary gear, the useful screw bolt in both sides of sun gear uses the gear reference circle to be the concentric circular boss of outer circle most, each boss thickness is the same, planetary gear's planet frame is fixed on the center pin, there is the bearing between planetary gear center pin on the planet frame and the planetary gear, there is the bearing between sun gear and the planetary gear center pin.

According to the design characteristics of the planetary gear mechanism, the reference circle of the internal gear and the reference circle of the planetary gear and the reference circle of the sun gear are tangent, all gear bosses are mutually supported at the tangent points and only roll and do not slide, in addition, the reference circle of the gear is between the tooth root circle and the tooth top circle, and when the gears are meshed, all the specific bosses can laterally limit the gears.

The utility model has the advantages of it is following: the specific lug bosses are simple in structure, the gear lug bosses are mutually supported at the tangent points, the rigidity of the planetary gear mechanism and the rigidity of each gear are enhanced, the problems that the planetary gear mechanism is easy to deform, gear teeth are easy to damage and each gear of the planetary gear mechanism is easy to axially displace are solved, each gear of the planetary gear mechanism can be a straight gear, complex herringbone teeth or helical gears and the like are not needed, and the machining and manufacturing process is greatly simplified.

Drawings

Fig. 1 is a schematic view of the structure of an internal gear and a boss of a planetary gear driving device 1-an internal gear 2-a boss.

Fig. 2 is a schematic view of a planetary gear and boss structure of the planetary gear drive 1-planetary gear 2-boss.

Fig. 3 is a schematic view of the sun gear and boss structure of the planetary gear drive 1-sun gear 2-boss.

Fig. 4 is a schematic structural diagram of the planetary gear drive assembly 1-planet carrier 2-internal gear 3-planetary gear 4-sun gear.

Fig. 5 is a schematic partial view of the structure of the planetary gear drive assembly 1-planet carrier 2-internal gear 3-planetary gear 4-sun gear.

Detailed Description

1 electric vehicle drive wheel: the outer circle of the inner gear is fixed with the hub concentrically, inner gear reference circle as the concentric annular boss of the innermost circle fixed by screw bolts on two sides of the inner gear, the concentric circular boss which is fixed by screw bolts on two sides of the planet gear and the sun gear and takes the gear reference circle as the outermost circle, the thickness of each boss is the same, the planet carrier of the planet gear is fixed on the central shaft, a bearing is arranged between the planet gear central shaft on the planet carrier and the planet gear, a bearing is arranged between the sun gear and the planet gear central shaft, the tire is arranged outside the hub, and the motor drives all the planet gears to form an integrated universal driving wheel.

2, airplane blade driving device: the two ends of the outer diameter of the inner meshing gear are fixed with the blades, the centers of the blades are concentric with the inner meshing gear, the centers of the blades and the sun gear can be coaxially fixed, concentric annular bosses which take the inner meshing gear reference circle as the innermost circle and are fixed on the two sides of the inner meshing gear through threaded bolts, concentric circular bosses which take the gear reference circle as the outermost circle and are fixed on the two sides of the planet gear and the sun gear through threaded bolts, the thicknesses of the bosses are the same, a planet frame of the planet gear is fixed on a central shaft, a bearing is arranged between a planet gear central shaft on the planet frame and the planet gear, a bearing is arranged between the sun gear and the planet gear central shaft, all planet gears are driven by a motor, and an integrated blade.

The foregoing is a more detailed description of the invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. A planetary gear driving device with specific bosses comprises concentric annular bosses, wherein inner tooth wheel reference circles of the concentric annular bosses are fixed on two sides of an inner gear through threaded bolts, concentric circular bosses, which are fixed on two sides of a planetary gear and a sun gear through threaded bolts and take gear reference circles as the outer circles, of the concentric annular bosses, the thicknesses of the bosses are the same, a planet carrier of the planetary gear is fixed on a central shaft, bearings are arranged between a central shaft of the planetary gear on the planet carrier and the planetary gear, and bearings are arranged between the central shaft of the sun gear and the central shaft of the planetary gear.