CN216583947U

CN216583947U - Double-chain transmission aviation winch speed reducer structure

Info

Publication number: CN216583947U
Application number: CN202122465194.0U
Authority: CN
Inventors: 李凯; 许辉; 郑航
Original assignee: Zhengzhou Aircraft Equipment Co Ltd
Current assignee: Zhengzhou Aircraft Equipment Co Ltd
Priority date: 2021-10-13
Filing date: 2021-10-13
Publication date: 2022-05-24
Anticipated expiration: 2031-10-13

Abstract

The utility model belongs to the field of aviation freight systems, and relates to a double-chain transmission aviation winch speed reducer structure which can simultaneously drive a winding drum and a cable arrangement mechanism by using a single power source. At present, the aviation freight winch has a complex structure and overlarge integral size and weight, and cannot meet the requirement of light weight of the aviation winch. The utility model provides a double-chain transmission speed reducer structure for an aviation winch. The speed reducer adopts a transmission principle of a small-tooth-difference gear train, a planet carrier of the gear train is fixed on a shell of the aviation winch, an internal gear is processed on a winding drum of the aviation winch, concentric inner and outer gears are processed on a fluted disc, the winding drum is driven by the outer gear to serve as main power output of the speed reducer, and the cable arrangement gear is driven by the internal gear to serve as cable arrangement power output. The fluted disc is provided with a sliding bearing and a thrust washer which can work under the condition of oil-free lubrication, and the problem of insufficient lubrication under the condition of heavy load is solved.

Description

Double-chain transmission aviation winch speed reducer structure

Technical Field

The utility model belongs to the field of aviation freight systems, and relates to a double-chain transmission aviation winch speed reducer structure which can simultaneously drive a winding drum and a cable arrangement mechanism by using a single power source.

Background

At present, for an aviation freight winch, a planetary gear train is mostly adopted to transmit the torque of a main power source to a winding drum to drive the winding drum to wind a steel cable, and meanwhile, in order to improve the accuracy of steel cable winding, a power source driving cable arranging mechanism is required to be added, so that the aviation winch has a complex structure, and is overlarge in overall size and weight, and the requirement of light weight of the aviation winch cannot be met.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a double-chain transmission speed reducer structure for an aviation winch. The speed reducer adopts a transmission principle of a small-tooth-difference gear train, a planet carrier of the gear train is fixed on a shell of the aviation winch, an internal gear is processed on a winding drum of the aviation winch, concentric inner and outer gears are processed on a fluted disc, the winding drum is driven by the outer gear to serve as main power output of the speed reducer, and the cable arrangement gear is driven by the internal gear to serve as cable arrangement power output. The fluted disc is provided with a sliding bearing and a thrust washer which can work under the condition of oil-free lubrication, and the problem of insufficient lubrication under the condition of heavy load is solved.

The utility model provides a double-chain transmission aviation winch speed reducer structure, which is characterized in that a planet carrier is fixedly arranged on a shell, a power input gear is arranged on the planet carrier, a cable arranging gear and a winding drum are rotatably arranged on the shell, and the power input gear, the cable arranging gear and the winding drum are coaxial; the planet carrier and the shell are also provided with a plurality of pairs of opposite through holes along the circumferential direction, a crankshaft is arranged in each pair of through holes, the crankshaft is provided with two eccentric sections, the eccentric directions of the two eccentric sections are 180 degrees symmetrical about a central shaft, a planetary gear is fixedly arranged at one end of the crankshaft, and the power input gear 1 is externally meshed with the planetary gear; the fluted disc is provided with coaxial external teeth and internal teeth, and a plurality of through holes are formed in an annular area between the external teeth and the internal teeth along the circumferential direction; the speed machine structure is provided with two fluted discs, the fluted discs are respectively installed on the eccentric sections of the crankshafts through sliding bearings and thrust washers, the angles of the crankshafts in each fluted disc are the same, the inner teeth of the fluted discs are meshed with the outer teeth of the cable-discharging gears, and the outer teeth of the fluted discs are meshed with the inner teeth of the winding drum.

Advantageously or optionally, a plurality of hollow connecting shafts are fixed between the planet carrier and the shell, and the bolts sequentially penetrate through the planet carrier, the connecting shafts and the shell and then are connected and fixed with the nuts.

Advantageously or alternatively, the planet gear is connected to the crankshaft by a key.

Advantageously or alternatively, the sliding bearing and thrust washer are of self-lubricating wear-resistant material and can operate under oil-free lubrication conditions.

Advantageously or alternatively, the power input gear is mounted on the planet carrier by bearings, the drum is mounted on the housing by bearings, and the crankshaft and the cable wheel are mounted on the planet carrier and the housing by bearings.

Advantageously or alternatively, an auxiliary output gear is fixedly mounted on the portion of the cable ejection gear protruding from the housing, and is connected by a key.

Advantageously or alternatively, the two toothed discs are mounted in opposite directions on the crankshaft.

Advantageously or alternatively, the power input gear is externally toothed at one end and internally splined at the other end.

Has the advantages that: the utility model solves the problem of insufficient lubrication under heavy load conditions, and improves the reliability of the aviation winch speed reducer.

The features, functions, and advantages that have been discussed can be achieved independently in various examples or may be combined in yet other examples. Further details of the examples can be seen with reference to the following description and the accompanying drawings.

Drawings

The illustrative examples, as well as a preferred mode of use, further objectives, and descriptions thereof, will best be understood by reference to the following detailed description of an example of the present invention when read in conjunction with the accompanying drawings, wherein:

fig. 1 is a schematic structural diagram of a double-chain transmission aviation winch speed reducer structure.

FIG. 2 is a structural diagram of a fluted disc according to the present invention.

Detailed Description

The disclosed examples will be described more fully with reference to the accompanying drawings, in which some (but not all) of the disclosed examples are shown. Indeed, many different examples may be described and should not be construed as limited to the examples set forth herein. Rather, these examples are described so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

Referring to fig. 1, a power input gear 1 is engaged with a planetary gear 2, the planetary gear 2 is connected with a crankshaft 3 through a key, a fluted disc 5 is installed on an eccentric section of the crankshaft 3 through a sliding bearing 6 and a thrust washer 7, and a planet carrier 4 is fixed on a shell 9 through a connecting shaft 11 and a bolt 12. When the power input gear 1 inputs torque, the planetary gear 2 and the crankshaft 3 are driven to rotate along the axis of the planetary gear 2, and the eccentric section of the crankshaft 3 drives the fluted disc 5 to eccentrically swing.

Referring to fig. 2, concentric inner and outer gears are processed on the gear plate 5, the outer teeth 5-1 on the gear plate 5 are engaged with the inner teeth of the winding drum 8, and the inner teeth 5-2 on the gear plate 5 are engaged with the cable-laying gear 10. When the fluted disc 5 eccentrically swings, the driving drum 8 and the cable discharging gear 10 rotate along the axis of the cable discharging gear 10, and simultaneously, the torque is output. The drum 8 converts the torque into the tension of the wire rope, and the rope-discharging gear 10 transmits the torque to a rope-discharging mechanism of the aviation winch for assisting the rope-discharging.

The description of the different advantageous arrangements has been presented for purposes of illustration and description, but is not intended to be exhaustive or limited to the examples in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. Additionally, the different advantageous examples may describe different advantages as compared to other advantageous examples. The example or examples selected are chosen and described in order to best explain the principles of the examples, the practical application, and to enable others of ordinary skill in the art to understand the disclosure for various examples with various modifications as are suited to the particular use contemplated.

Claims

1. The utility model provides a double-chain drive aviation winch speed reducer structure which characterized in that: the mechanism is characterized in that a planet carrier (4) is fixedly arranged on a shell (9), a power input gear (1) is arranged on the planet carrier (4), a cable arranging gear (10) and a winding drum (8) are rotatably arranged on the shell (9), and the power input gear (1), the cable arranging gear (10) and the winding drum (8) are coaxial; the planetary carrier (4) and the shell (9) are also provided with a plurality of pairs of opposite through holes along the circumferential direction, a crankshaft (3) is arranged in each pair of through holes, the crankshaft (3) is provided with two eccentric sections, the eccentric directions of the two eccentric sections are 180 degrees symmetrical about a central shaft, a planetary gear (2) is fixedly arranged at one end of the crankshaft, and the power input gear (1) is externally meshed with the planetary gear (2); the fluted disc (5) is provided with coaxial external teeth (5-1) and internal teeth (5-2), and a plurality of through holes are formed in an annular area between the external teeth (5-1) and the internal teeth (5-2) along the circumferential direction; the speed reducer structure is provided with two fluted discs (5), wherein the fluted discs (5) are respectively arranged on the eccentric section of a crankshaft (3) through sliding bearings (6) and thrust washers (7), the angles of the crankshaft (3) in each fluted disc (5) are the same, the inner teeth (5-2) of the fluted discs (5) are meshed with the outer teeth of a cable-arranging gear (10), and the outer teeth (5-1) of the fluted discs (5) are meshed with the inner teeth of a winding drum (8).

2. The double-chain drive aviation winch reducer structure of claim 1, wherein: a plurality of hollow connecting shafts (11) are fixed between the planet carrier (4) and the shell (9), and bolts (12) penetrate through the planet carrier (4), the connecting shafts (11) and the shell (9) in sequence and then are connected and fixed with nuts.

3. The double-chain drive aviation winch reducer structure of claim 1, wherein: the planetary gear (2) is connected with the crankshaft (3) through a key.

4. The double-chain drive aviation winch reducer structure of claim 1, wherein: the sliding bearing (6) and the thrust washer (7) adopt self-lubricating wear-resistant materials and can work under the condition of oil-free lubrication.

5. The double-chain drive aviation winch reducer structure of claim 1, wherein: the power input gear (1) is arranged on the planet carrier (4) through a bearing, the winding drum (8) is arranged on the shell (9) through a bearing, and the crankshaft (3) and the cable discharging gear (10) are arranged on the planet carrier (4) and the shell (9) through bearings.

6. The double-chain drive aviation winch reducer structure of claim 1, wherein: an auxiliary output gear is fixedly arranged at the part of the cable arranging gear (10) extending out of the shell (9) and is connected through a key.

7. The double-chain drive aviation winch reducer structure of claim 1, wherein: the two fluted discs (5) are reversely arranged on the crankshaft (3).

8. The double-chain drive aviation winch reducer structure of claim 1, wherein: one end of the power input gear (1) is a shaft with external teeth, and the other end of the power input gear is provided with an internal spline.