CN212202989U - Shunt speed reducer - Google Patents

Abstract

The utility model discloses a shunt speed reducer, which comprises an input shaft, an input gear and an output shaft, wherein the input shaft and the output shaft are arranged in parallel, the input shaft is provided with an input gear, the output shaft is provided with a fan-shaped output gear, both sides of the input shaft are provided with a plurality of idlers, all the idlers are meshed with the fan-shaped output gear, all the idlers are meshed with the input gear, compared with the prior art in which an oil cylinder is adopted for extension and retraction, gear type transmission is adopted, the safety and stability are higher, a closed planetary gear structure is adopted, the torque transmission capacity between two parallel axes is improved by increasing the number of the meshed gears, a larger reduction ratio can be obtained, the space range is smaller, the fan-shaped output gear is adopted for output, when larger torque is provided, the torque transmission in smaller space can be adapted, and the design mode of combining the fan-shaped, the handle is provided with larger torque and holding capacity aiming at the conditions of small opening and closing angle and narrow space range.

Description

Shunt speed reducer

Technical Field

The utility model relates to a reduction gear especially relates to reposition of redundant personnel reduction gear.

Background

On the aviation aircraft at the present stage, the surface cover plate needs to rotate by a certain angle, an oil cylinder ejection device is mostly adopted, the purpose of opening and closing by a certain angle is achieved by changing the extending distance of the oil cylinder, and the occupied space is large.

In the existing planetary reduction mechanism on the market, when the final output torque is large, the whole rotary diameter needs to be large to output larger torque. And the output shaft cantilever needs to be additionally fixed when outputting larger torque, and the requirement of small volume and mass of an airborne product is not utilized.

By adopting the traditional straight tooth transmission, when the transmission torque is large and the required rotating part is small, the corresponding shaft distance is large, the rotation diameter is large, the reduction ratio is small, and the design concept of compact space structure is not facilitated.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a reposition of redundant personnel reduction gear to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the shunt speed reducer comprises an input shaft, an input gear and an output shaft, wherein the input shaft and the output shaft are arranged in parallel, the input shaft is provided with the input gear, the output shaft is provided with a fan-shaped output gear, a plurality of idle gears are arranged on two sides of the input shaft, all the idle gears are meshed with the fan-shaped output gear, and all the idle gears are meshed with the input gear.

The number of the idle wheels is two, and the idle wheels are symmetrically arranged on the plane where the central axis of the input shaft and the central axis of the output shaft are located.

The utility model has the advantages that:

1. compared with the prior art, the hydraulic cylinder telescopic type transmission device has higher safety and stability due to the adoption of the gear type transmission mode.

2. By adopting a closed planetary gear structure and increasing the number of meshing gears, the torque transmission capacity between two parallel axes is improved, and a larger reduction ratio and a smaller space range can be obtained.

3. The fan-shaped output gear is adopted for outputting, so that the torque transmission in a small space can be adapted when a large torque is provided.

4. The design mode that adopts fan-shaped output gear and closed planetary gear to combine together provides bigger moment of torsion and the ability of controlling to the less and narrow and small condition of space range of angle that opens and shuts.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the fixed airfoil skin and the flap in a closed state;

fig. 3 is the structure diagram of the fixed airfoil skin and the flap in the separated state.

In the figure, an input shaft 1, an input gear 2, an idler gear 3, an output shaft 4, a sector output gear 5, a fixed airfoil skin 6 and a flap 7.

Detailed Description

The technical solution of the present invention is described in further detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following description.

Referring to fig. 1 to 3, an embodiment of the present invention provides a shunt speed reducer, including an input shaft 1, an input gear 2 and an output shaft 4, where the input shaft 1 is parallel to the output shaft 4, the input shaft 1 is provided with the input gear 2, the output shaft 4 is provided with a sector output gear 5, two sides of the input shaft 1 are both provided with an idler 3, (since a single tooth surface transmission torque is limited, the transmission torque can be increased by increasing the number of meshing teeth, the number of meshing teeth is determined by gear parameters, and also determined by the number of meshing gears, if only the gear parameters are changed, the improvement capability is small, so that the two idlers 3 are adopted to transmit torque), the two idlers 3 are symmetrically arranged with respect to the plane where the central axis of the input shaft 1 and the central axis of the output shaft 4 are located, the two idlers 3 are both meshed with the sector output gear 5, the input gear 2 and the two idler gears 3 now form a closed planetary gear.

A transmission path:

power (as the motor) transmits power to input torque on the input shaft 1 through input shaft 1, and then drive input gear 2 and rotate, input gear 2 drives two idlers 3 and rotates, idler 3 realizes the energy reposition of redundant personnel, reduce single tooth atress, in the straight-tooth meshing with the ability number of teeth, the transmission moment of torsion is the twice of original straight-tooth meshing, and whole axial dimension increases 5% of less than whole interaxial size, two idlers 3 drive fan-shaped output gear 5 and rotate, and then drive output shaft 4 and rotate, and then drive flap 7 and rotate, realize flap 7 and fixed airfoil skin 6's separation and closure, this transmission mode is when the equal moment of torsion of transmission is big, interaxial size is littleer, can provide bigger reduction ratio.

The reason for choosing the sector output gear 5 is:

when transmitting torque, as the torque is larger, a larger gear is needed to meet the transmission torque requirement, but a part of the space of the gear is narrow, in the contradiction, the fan-shaped output gear 5 is introduced, and as the rotation angle is smaller, the local part of the gear can meet the use requirement, so that the bearing capacity is improved, a larger reduction ratio can be realized in a transmission system, and meanwhile, referring to fig. 2 and 3, the situation of interference with the fixed airfoil skin 6 can occur if a complete gear is adopted.

The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise forms disclosed herein, and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the invention as defined by the appended claims. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims (2)

1. Reposition of redundant personnel reduction gear, including input shaft (1), input gear (2) and output shaft (4), input shaft (1) and output shaft (4) parallel arrangement, its characterized in that: the novel gear transmission mechanism is characterized in that an input gear (2) is arranged on the input shaft (1), a fan-shaped output gear (5) is arranged on the output shaft (4), a plurality of idle gears (3) are arranged on two sides of the input shaft (1), all the idle gears (3) are meshed with the fan-shaped output gear (5), and all the idle gears (3) are meshed with the input gear (2).

2. The shunt reducer of claim 1, wherein: the number of the idle wheels (3) is two and the idle wheels are symmetrically arranged on the plane of the central axis of the input shaft (1) and the central axis of the output shaft (4).

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