阅读说明：本技术 一种具有双驱功能的传动箱 (Transmission case with double-drive function ) 是由 崔琦峰 彭志龙 罗海军 郑宗勇 于 2019-09-26 设计创作，主要内容包括：一种具有双驱功能的传动箱,包括电机等。电机安装在第一壳体上,电机的输出端通过第一键与行星减速器的太阳轮连接,并通过第一轴承组安装在第一壳体上。行星减速器的外齿圈固定在第一壳体、第二壳体的连接处,行星减速器的行星架通过轴承B安装在第二壳体的内腔处,行星架通过第二键与大锥齿轮连接。大锥齿轮通过轴承组C固定在底板上,大锥齿轮的末端通过第三键与传动齿轮连接。小锥齿轮过第四轴承组安装在第二壳体上,小锥齿轮的锥齿端与大锥齿轮啮合,小锥齿轮的末端伸出第二壳体。本发明提高大型伸展机构在轨的传动功能可靠度。(A transmission case with double-drive function comprises a motor and the like. The motor is installed on first casing, and the output of motor is connected with planetary reducer's sun gear through first key to install on first casing through first bearing group. An outer gear ring of the planetary reducer is fixed at the joint of the first shell and the second shell, a planet carrier of the planetary reducer is installed in the inner cavity of the second shell through a bearing B, and the planet carrier is connected with the large bevel gear through a second key. The big bevel gear is fixed on the bottom plate through a bearing group C, and the tail end of the big bevel gear is connected with the transmission gear through a third key. The small bevel gear is arranged on the second shell through a fourth bearing group, the bevel end of the small bevel gear is meshed with the large bevel gear, and the tail end of the small bevel gear extends out of the second shell. The invention improves the reliability of the on-orbit transmission function of the large-scale stretching mechanism.)

1. The utility model provides a transmission case with two functions of driving which characterized in that: the device comprises a motor (1), a first bearing group (3), a second bearing group (5), a small bevel gear (6), a first shell (8), a planetary reducer (9), a third bearing (10), a second shell (11), a large bevel gear (12), a bottom plate (13), a fourth bearing group (14) and a transmission gear (15); the motor (1) is arranged on the first shell (8), and the output end of the motor (1) is connected with a sun gear of the planetary reducer (9) and is arranged in the first shell (8) through the first bearing group (3); an outer gear ring of the planetary reducer (9) is fixed at the joint of the first shell (8) and the second shell (11), a planet carrier of the planetary reducer (9) is installed in the inner cavity of the second shell (11) through a third bearing (10), and the planet carrier of the planetary reducer (9) is connected with a bevel gear end of a large bevel gear (12); the large bevel gear (12) is fixed on the bottom plate (13) through a fourth bearing group (14), and the tail end of the large bevel gear (12) is connected with the transmission gear (15); the small bevel gear (6) is arranged on the side surface of the second shell (11) through the second bearing group (5), the bevel gear end of the small bevel gear (6) is meshed with the large bevel gear (12), the tail end of the small bevel gear (6) extends out of the second shell (11), and a hand-driven interface matched with a hand-driven function is arranged at the tail end of the small bevel gear (6); the small bevel gear (6) and the large bevel gear (12) are externally meshed.

2. A transmission case with dual drive function according to claim 1, wherein: the motor driving mode and the manual driving mode are provided, and the manual driving mode is a functional backup of the motor driving mode.

3. A transmission case with dual drive function according to claim 2, wherein: the manual driving mode adopts bevel gear transmission, and the axis of the manual driving interface is staggered with the axis of the electric driving end.

4. A transmission case with a double drive function according to claim 2 or 3, characterized in that: the electric driving function is that a driving chain is formed by the motor (1) and the planetary reducer (9), and the driving capability and the driving speed are designed according to the load requirement.

5. A transmission case with double drive function according to claim 4, characterized in that: the planetary reducer is characterized by further comprising a first key (2), and the output end of the motor (1) is connected with a sun gear of the planetary reducer (9) through the first key (2).

6. A transmission case with dual drive function according to claim 5, wherein: the planetary reducer is characterized by further comprising a second key (4), and a planetary carrier of the planetary reducer (9) is connected with a bevel gear end of the large bevel gear (12) through the second key (4).

7. A transmission case with dual drive function according to claim 5 or 6, characterized in that: the end of the large bevel gear (12) is connected with the transmission gear (15) through the third key (7).

8. A transmission case with dual drive function according to claim 7, wherein: the first bearing group (3), the second bearing group (5) and the fourth bearing group (14) are deep groove ball bearing groups respectively.

9. A transmission case with dual drive function according to claim 8, wherein: the third bearing (10) is a deep groove ball bearing.

10. A transmission case with a dual drive function according to claim 8 or 9, wherein: the small bevel gear (6) is in speed reduction transmission to the large bevel gear (12).

Technical Field

The invention relates to the field of driving transmission of spacecraft mechanisms, in particular to a transmission case with an electric driving function and a hand driving function, which is suitable for spacecraft accessories which can be manually operated and transmitted by astronauts in orbit.

Background

With the development of the mission of the large-scale spacecraft in China, the large-area solar wing is adopted to meet the requirement of the large-scale spacecraft on-orbit high power. The large-scale stretching mechanism is one of the core components of the large-scale solar wing of the large-scale spacecraft, and realizes repeated on-orbit unfolding and folding, supporting and accurate positioning of the solar wing for multiple times. In order to meet the requirements of long-term on-orbit operation of a large spacecraft and repeated on-orbit unfolding and folding of solar wings, the transmission function of a large stretching mechanism needs to have higher function reliability, and astronauts manually carry out transmission on the orbit when necessary.

The driving transmission equipment of the existing widely used space vehicle, such as a solar wing on-orbit sun-to-sun orienting mechanism, an antenna rotation driving device and the like, is electrically driven equipment, can cause the whole vehicle to be incapable of effectively operating on-orbit when the electric driving function fails, does not have an interface module for manually driving on-orbit by astronauts, has low reliability and can not adapt to the requirements of on-orbit high-reliability multiple driving modes.

Disclosure of Invention

The technical problems to be solved by the invention are as follows: in order to improve the reliability of the on-orbit transmission function of the large-scale stretching mechanism, the invention provides the transmission case with the double-drive function, which has the electric drive function and the hand drive function and can adapt to the on-orbit high-reliability repeated unfolding and folding characteristics of the large-scale stretching mechanism for the large-scale spacecraft.

The technical scheme adopted by the invention is as follows: a transmission case with double-drive function comprises a motor, a first bearing group, a second bearing group, a small bevel gear, a first shell, a planetary reducer, a third bearing, a second shell, a large bevel gear, a bottom plate, a fourth bearing group and a transmission gear; the motor is arranged on the first shell, and the output end of the motor is connected with the sun gear of the planetary reducer and is arranged in the first shell through the first bearing group; an outer gear ring of the planetary reducer is fixed at the joint of the first shell and the second shell, a planet carrier of the planetary reducer is arranged in the inner cavity of the second shell through a third bearing, and the planet carrier of the planetary reducer is connected with a bevel gear end of the large bevel gear; the large bevel gear is fixed on the bottom plate through a fourth bearing group, and the tail end of the large bevel gear is connected with the transmission gear; the small bevel gear is arranged on the side surface of the second shell through the second bearing group, the bevel end of the small bevel gear is meshed with the large bevel gear, the tail end of the small bevel gear extends out of the second shell, and the tail end of the small bevel gear is provided with a hand-driven interface matched with a hand-driven function; the small bevel gear and the large bevel gear are externally meshed.

A transmission case with double-drive function has two drive modes of electric drive and manual drive, and the manual drive mode is a function backup of the motor drive mode. The manual driving mode adopts bevel gear transmission, and the axis of the manual driving interface is staggered with the axis of the electric driving end. The electric driving function is a transmission chain formed by a motor and a planetary reducer, and the driving capability and the driving speed are designed according to the load requirement.

The utility model provides a transmission case with two functions of driving, still includes first key, and the output of motor is connected with planetary reducer's sun gear through first key.

The utility model provides a transmission case with two functions of driving, still includes the second key, and planetary reducer's planet carrier passes through the second key and is connected with big bevel gear's awl tooth end.

A transmission case with a double-drive function further comprises a third key, and the tail end of a large bevel gear is connected with a transmission gear through the third key.

The first bearing set, the second bearing set and the fourth bearing set are deep groove ball bearing sets respectively. The third bearing is a deep groove ball bearing. The small bevel gear is in speed reduction transmission to the large bevel gear.

Compared with the prior art, the invention has the advantages that:

(1) the mechanism of the invention has two functional modes of motor electric drive and manual drive. When the electric driving is carried out, the motor rotates, and the transmission gear is driven to rotate through the planetary reducer and the large bevel gear on the transmission chain link; when the hand-driven bevel gear is driven manually, a special hand-driven tool is connected with a hand-driven interface at the tail end of the bevel pinion, and the bevel pinion is rotated, so that the transmission gear is driven to rotate.

(2) Because the motor has limited working life in a space orbit, when the motor cannot work due to the fault of a power supply circuit or the motor on orbit, in order to avoid the failure of the driving function of the transmission case and the accessory function of the spacecraft, the invention designs the hand-drive interface matched with the hand-drive function, and an astronaut uses a special hand-drive tool to connect with the hand-drive interface on orbit to drive the transmission case to normally work.

(3) The mechanism provided by the invention has a backup function on the driving function, so that the reliability of the transmission case is greatly improved, and the realization of the accessory function of the spacecraft is guaranteed.

Drawings

FIG. 1 is a schematic cross-sectional view of a transmission case with dual drive capability according to the present invention;

fig. 2 is a schematic structural diagram of the appearance of the transmission case with the double-drive function.

The attached drawings are as follows: the device comprises a motor 1, a first key 2, a bearing group 3, a second key 4, a second bearing group 5, a small bevel gear 6, a third key 7, a first shell 8, a planetary reducer 9, a third bearing 10, a second shell 11, a large bevel gear 12, a bottom plate 13, a fourth bearing group 14 and a transmission gear 15.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1 is a schematic sectional view of a transmission case having a dual drive function according to the present invention. As shown in the figure, the transmission case with the double-drive function comprises a motor 1, a first key 2, a first bearing group 3, a second key 4, a second bearing group 5, a small bevel gear 6, a third key 7, a first shell 8, a planetary reducer 9, a third bearing 10, a second shell 11, a large bevel gear 12, a bottom plate 13, a fourth bearing group 14 and a transmission gear 15. The motor 1 is installed on the first shell 8, and the output end of the motor 1 is connected with the sun gear of the planetary reducer 9 through the first key 2 and is installed on the first shell 8 through the first bearing group 3. An outer gear ring of the planetary reducer 9 is fixed at the joint of the first shell 8 and the second shell 11, a planet carrier of the planetary reducer 9 is installed at the inner cavity of the second shell 11 through a third bearing 10, and the planet carrier of the planetary reducer 9 is connected with a large bevel gear 12 through a second key 4. The big bevel gear 12 is fixed on the bottom plate 13 through a fourth bearing set 14, and the tail end of the big bevel gear 12 is connected with a transmission gear 15 through a third key 7. The small bevel gear 6 is arranged on the second shell 11 through the second bearing group 5, the bevel end of the small bevel gear 6 is meshed with the large bevel gear 12, the tail end of the small bevel gear 6 extends out of the second shell 11, and the tail end of the small bevel gear 6 is provided with a hand-driven interface matched with a hand-driven function. The electric driving function is a transmission chain formed by a motor and a planetary reducer, and the driving capability and the driving speed can be designed adaptively according to the load requirement; and the electric drive function and the manual drive function can both independently implement the transmission function.

The first bearing group 3, the second bearing group 5 and the fourth bearing group 14 are deep groove ball bearing groups respectively. The third bearing 10 is a deep groove ball bearing. The small bevel gear 6 transmits to the large bevel gear 12 as speed reduction transmission.

Fig. 2 is a schematic structural diagram of an external shape of a transmission case with a double-drive function according to an embodiment of the invention. By the drawing can show, the mechanism possesses two kinds of modes of the electric drive function and the hand drive function, and the hand drive interface axis and the electric drive end axis are staggered, and possesses enough space for realizing the hand drive energy.

The invention is mainly applied to a large-scale stretching mechanism of a large-scale spacecraft, provides a transmission case with a double-drive function, has an electric drive function and a hand drive function, and can adapt to the on-orbit high-reliability repeated unfolding and folding characteristics of the large-scale stretching mechanism of the large-scale spacecraft.

It will be appreciated by those skilled in the art that the invention can be embodied in many other specific forms without departing from the spirit or scope of the invention. Although embodiments of the present invention have been described, it is to be understood that the present invention should not be limited to those embodiments, and that changes and modifications may be made by one skilled in the art within the spirit and scope of the invention as defined by the appended claims.