阅读说明：本技术 一种高转速大功率大补偿量联轴器 (High-rotating-speed high-power large-compensation-amount coupling ) 是由 王添 杨光荣 徐震 孙莉 于 2021-08-23 设计创作，主要内容包括：本发明提供了一种高转速大功率大补偿量联轴器,包括传动轴；所述传动轴两端分别固定有直内星轮和球内星轮,直内星轮和球内星轮分别配合安装于直外星轮和球外星轮中,直外星轮后端延伸成筒状并花键配合安装有输入齿轮,球外星轮前端设置端面齿连接于输出轴,输入齿轮接入动力输入。本发明可有效解决在高转速、大功率工况下联轴器两端存在安装误差的问题,使输入输出端保证转动同步性,提高发动机工作可靠性。(The invention provides a high-rotating-speed high-power large-compensation-amount coupler, which comprises a transmission shaft; the transmission shaft both ends are fixed with straight interior star gear and ball interior star gear respectively, and straight interior star gear and ball interior star gear cooperate respectively to be installed in straight besides-star gear and ball external star gear, and straight outside star gear rear end extends into tube-shape and spline fit installs input gear, and ball external star gear front end sets up the terminal surface tooth and connects in the output shaft, and input gear inserts power input. The invention can effectively solve the problem of installation errors at two ends of the coupler under the working conditions of high rotating speed and high power, ensures the rotation synchronism of the input end and the output end, and improves the working reliability of the engine.)

1. The utility model provides a high rotational speed is big for big compensation volume shaft coupling of power, includes transmission shaft (9), its characterized in that: the transmission shaft (9) both ends are fixed with straight star gear (6) and interior star gear of ball (12) respectively, and straight star gear (6) and interior star gear of ball (12) cooperate respectively to install in straight star gear (3) and outer star gear of ball (16), and input gear (2) are installed to straight star gear (3) rear end extension tube-shape and spline fit, and outer star gear of ball (16) front end sets up the terminal surface tooth and connects in the output shaft, and input gear (2) insert power input.

2. The high-speed high-power large-compensation coupling of claim 1, wherein: an inner star wheel straight raceway (20) is arranged on the outer wall of the straight inner star wheel (6), an outer star wheel straight raceway (19) is arranged on the inner wall of the straight outer star wheel (3), and a steel ball (14) is arranged between the outer star wheel straight raceway (19) and the inner star wheel straight raceway (20).

3. The high-speed high-power large-compensation coupling of claim 1, wherein: an inner star wheel ball raceway (22) is arranged on the outer wall of the ball inner star wheel (12), an outer star wheel ball raceway (21) is arranged on the inner wall of the ball outer star wheel (16), a steel ball (14) is arranged between the outer star wheel ball raceway (21) and the inner star wheel ball raceway (22), and the outer star wheel ball raceway (21) and the inner star wheel ball raceway (22) are both cambered surface raceways and limit the steel ball (14).

4. The high-speed high-power large-compensation coupling of claim 1, wherein: the transmission shaft (9) is sleeved in two sections of mutually sleeved outer covers (10), and the two sections of outer covers (10) are respectively arranged on the straight outer star wheel (3) and the ball inner star wheel (12).

5. The high-speed high-power large-compensation coupling of claim 2, wherein: the length of the outer star wheel straight raceway (19) and/or the inner star wheel straight raceway (20) is larger than the diameter of the steel ball (14).

6. The high-speed high-power large-compensation coupling of claim 2, wherein: the number of the steel balls (14) between the outer star wheel straight raceway (19) and the inner star wheel straight raceway (20) is 6; the straight inner star wheel (6) is provided with a retainer (5), and the retainer (5) limits the steel ball (14).

7. The high-speed high-power large-compensation coupling of claim 3, wherein: the number of the steel balls (14) between the outer star wheel ball race (21) and the inner star wheel ball race (22) is 6.

8. The high-speed high-power large-compensation coupling of claim 2, wherein: the inner end of the straight star wheel (3) is provided with a cover cap (15), the cover cap (15) is fixed on the straight star wheel (3) through a pin (7), and the pin (7) is sleeved with a spring (8).

9. The high-speed high-power large-compensation coupling of claim 3, wherein: the inner end of the ball star wheel (16) is provided with a cover cap (15), the cover cap (15) is fixed on the straight star wheel (3) through a pin (7), and the pin (7) is sleeved with a spring (8).

Technical Field

The invention relates to a high-rotating-speed high-power large-compensation-amount coupler.

Background

The coupler is a commonly used component in mechanical transmission, and is mainly used for coupling a driving shaft and a driven shaft (or other rotating parts) to enable the driving shaft and the driven shaft to rotate together and transmit torque. Due to the influences of manufacturing and installation errors, deformation after bearing, temperature change and the like, strict centering of two shafts connected with the coupler cannot be guaranteed, but relative offset exists to a certain degree, the offset causes additional load in a transmission system, even severe vibration is caused, and particularly under the working conditions of high rotating speed and high power, the service life and the reliability of the coupler are seriously influenced. The coupling has been widely used in current mechanical transmission, and some patent technologies can be found in patent documents, but these patents are mainly applied to other fields except aeroengines, and are generally used in low rotating speed of 3000 rpm or less and low power working condition of 100kw or less. For the mechanical transmission system of the aircraft engine, the working speed of the coupling is generally used in the working conditions of more than 9000 rpm and more than 200kw, and the coupling needs to work stably and safely under the condition of installation error between two shafts, and the technical scheme in the prior art cannot ensure the achievement of the target.

Disclosure of Invention

In order to solve the technical problems, the invention provides a high-rotating-speed high-power large-compensation-amount coupler which can effectively solve the problem of installation errors at two ends of the coupler under the working conditions of high rotating speed and high power, so that the input end and the output end can ensure the rotation synchronism, and the working reliability of an engine can be improved.

The invention is realized by the following technical scheme.

The invention provides a high-rotating-speed high-power large-compensation-amount coupler which comprises a transmission shaft; the transmission shaft both ends are fixed with straight interior star gear and ball interior star gear respectively, and straight interior star gear and ball interior star gear cooperate respectively to be installed in straight besides-star gear and ball external star gear, and straight outside star gear rear end extends into tube-shape and spline fit installs input gear, and ball external star gear front end sets up the terminal surface tooth and connects in the output shaft, and input gear inserts power input.

The outer wall of the straight inner star wheel is provided with an inner star wheel straight raceway, the inner wall of the straight outer star wheel is provided with an outer star wheel straight raceway, and a steel ball is arranged between the outer star wheel straight raceway and the inner star wheel straight raceway.

The outer wall of the ball inner star wheel is provided with an inner star wheel ball raceway, the inner wall of the ball outer star wheel is provided with an outer star wheel ball raceway, a steel ball is arranged between the outer star wheel ball raceway and the inner star wheel ball raceway, and the outer star wheel ball raceway and the inner star wheel ball raceway are both cambered surface raceways for limiting the steel ball.

The transmission shaft is sleeved in two sections of outer covers which are sleeved with each other, and the two sections of outer covers are respectively arranged on the straight outer star wheel and the ball inner star wheel.

The length of the outer star wheel straight raceway and/or the length of the inner star wheel straight raceway are larger than the diameter of the steel ball.

The number of the steel balls between the outer star wheel straight rolling path and the inner star wheel straight rolling path is 6; the straight inner star wheel is provided with a retainer which limits the steel ball.

The number of the steel balls between the outer star wheel ball race and the inner star wheel ball race is 6.

The inner end of the straight star wheel is provided with a cover, the cover is fixed on the straight star wheel through a pin, and a spring is sleeved on the pin.

The inner end of the ball star wheel is provided with a cover, the cover is fixed on the straight star wheel through a pin, and a spring is sleeved on the pin.

The invention has the beneficial effects that: the problem of installation errors at two ends of the coupler under the working conditions of high rotating speed and high power can be effectively solved, so that the input end and the output end can ensure the rotation synchronism, and the working reliability of the engine is improved; the axial compensation capacity is +/-15 mm, the radial compensation capacity is +/-20 mm, the maximum shaft angle is 4.2 degrees, when the engine works for 600 hours under the working conditions that the maximum transmission power is 220-260 kw and the rotating speed is within the range of 41-60% of the rotating speed of the high-pressure rotor of the engine, the working state is good, decomposition and inspection are carried out, the abrasion condition of any part is not found, and the engine works reliably.

Drawings

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

FIG. 2 is a schematic cross-sectional view of the straight-track star and the ball-track star of FIG. 1;

FIG. 3 is a schematic illustration of an outer starwheel straight track configuration of the straight track starwheel of FIG. 1;

FIG. 4 is a schematic illustration of an inner starwheel straight track configuration of the straight track starwheel of FIG. 1;

FIG. 5 is a schematic illustration of an outer star wheel ball race configuration of the ball race star wheel of FIG. 1;

FIG. 6 is a schematic illustration of an inner star wheel ball race configuration of the ball race star wheel of FIG. 1;

in the figure: 1-spline nut, 2-input gear, 3-straight outer star wheel, 4-nut, 5-retainer, 6-straight inner star wheel, 7-pin, 8-spring, 9-transmission shaft, 10-outer cover, 11-retainer, 12-ball inner star wheel, 13-adapter, 14-steel ball, 15-cover, 16-ball outer star wheel, 17-adapter, 18-plug, 19-outer star wheel straight raceway, 20-inner star wheel straight raceway, 21-outer star wheel ball raceway, and 22-inner star wheel ball raceway.

Detailed Description

The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.

Example 1

The high-rotating-speed high-power large-compensation coupling shown in fig. 1 to 6 comprises a transmission shaft 9; the 9 both ends of transmission shaft are fixed with straight star gear 6 and interior star gear 12 of ball respectively, and straight star gear 6 and interior star gear 12 of ball cooperate respectively to be installed in straight besides-star gear 3 and outer star gear 16 of ball, and the straight outside-star gear 3 rear end extends into tube-shape and spline fit installs input gear 2, and outer star gear 16 front end of ball sets up the terminal surface tooth and connects in the output shaft, and input gear 2 inserts power input.

Example 2

Based on the embodiment 1, the outer wall of the straight inner star wheel 6 is provided with the straight inner star wheel raceway 20, the inner wall of the straight outer star wheel 3 is provided with the straight outer star wheel raceway 19, and the steel balls 14 are arranged between the straight outer star wheel raceway 19 and the straight inner star wheel raceway 20.

Example 3

Based on the embodiment 1, the inner star wheel ball race 22 is arranged on the outer wall of the ball inner star wheel 12, the outer star wheel ball race 21 is arranged on the inner wall of the ball outer star wheel 16, the steel balls 14 are arranged between the outer star wheel ball race 21 and the inner star wheel ball race 22, and the outer star wheel ball race 21 and the inner star wheel ball race 22 are both cambered surface races for limiting the steel balls 14.

Example 4

Based on the embodiment 1, the transmission shaft 9 is sleeved in two sections of mutually sleeved outer covers 10, and the two sections of outer covers 10 are respectively installed on the straight outer star wheel 3 and the ball inner star wheel 12.

Example 5

Based on the embodiment 2, the length of the outer star wheel straight raceway 19 and/or the inner star wheel straight raceway 20 is larger than the diameter of the steel ball 14.

Example 6

Based on the embodiment 2, the number of the steel balls 14 between the outer star wheel straight raceway 19 and the inner star wheel straight raceway 20 is 6; the straight inner star wheel 6 is provided with a retainer 5, and the retainer 5 limits the steel ball 14.

Example 7

Based on embodiment 3, the number of the steel balls 14 between the outer star wheel ball race 21 and the inner star wheel ball race 22 is 6.

Example 8

Based on the embodiment 2, the inner end of the straight outer star wheel 3 is provided with the cover cap 15, the cover cap 15 is fixed on the straight outer star wheel 3 through the pin 7, and the pin 7 is sleeved with the spring 8.

Example 9

According to the embodiment 3, the inner end of the ball star wheel 16 is provided with the cover cap 15, the cover cap 15 is fixed on the straight star wheel 3 through the pin 7, and the pin 7 is sleeved with the spring 8.

Example 10

Based on the embodiment, the input gear 2 and the straight-raceway outer star wheel 3 are connected through a spline, and are fixed into an integral structure with a bearing by using a spline nut 1; the inner star wheels 6 and 12 are fixed on the transmission shaft 9 through nuts 4; the straight roller path outer star wheel 3 drives a transmission shaft 9 through a steel ball 14 and an inner star wheel 6; the other end of the transmission shaft 9 is also provided with a ball-rolling-path outer star wheel 16 through a steel ball 14 and an inner star wheel 12 and is connected with an output shaft through end face teeth on the ball-rolling-path outer star wheel 16.

12 steel balls 14 are respectively arranged in a roller path formed by spherical grooves of an inner star wheel 6, an inner star wheel 12 and an outer star wheel 3, 16 which are connected with two ends of a transmission shaft 9, and the steel balls 14 are controlled to move in the roller path through six windows uniformly distributed along the circumference of a retainer 5, a retainer 11; the working torque of the driving shaft is transmitted to the straight-raceway outer star wheel 3 through a spline on the input gear 2, then transmitted to the transmission shaft 9 through the steel ball 14 and the inner star wheel 6, transmitted to the ball-raceway outer star wheel 16 through the inner star wheel 12 and the steel ball 14 by the transmission shaft 9, and then transmitted to the output shaft.

When the driving shaft and the driven shaft have an axial angle, the steel ball 14 at the output end can rotate on the arc raceway between the inner star wheel 12 and the ball raceway outer star wheel 16, and the driving shaft and the driven shaft are kept to synchronously rotate, so that adverse effects caused by inertia force of the driven shaft due to rotation speed fluctuation are eliminated; at the input end, the steel balls 14 and the inner star wheel 6 can axially move along the roller paths on the straight-roller-path outer star wheel 3 so as to compensate the axial displacement of the two shafts caused by working and installation errors.

After the lubricating oil enters the inner cavity of the transmission shaft 9, an oil blocking bush is designed at the input end of the transmission shaft 9 to block the lubricating oil in the inner cavity of the transmission shaft so as to prevent the lubricating oil from flowing backwards; when the engine works, the lubricating oil in the transmission shaft 9 enters the output end along the inner wall of the transmission shaft under the action of centrifugal force to lubricate and cool the steel ball 14, the inner star wheel 12 and the ball raceway outer star wheel 16.

Both ends of the coupling are provided with covers 15 which are respectively arranged on the outer star wheel through three pins 7 and three springs 8. The shroud 15 and the two outer star wheels each form an oil pocket to ensure that the ball 14 is covered with oil to provide lubrication and cooling for the inner rotating parts.