Self-adaptive lubricating oil flow adjusting mechanism

Abstract

The invention discloses a self-adaptive lubricating oil flow adjusting mechanism which comprises a gear shaft, and a through hole allowing lubricating oil to enter is formed in the center of the gear shaft. And the four pockets are correspondingly communicated with the slotted holes through the oil way holes. The four groove holes are correspondingly provided with a valve assembly A, a valve assembly B, a valve assembly C and a valve assembly D, the valve assembly A, the valve assembly B, the valve assembly C and the valve assembly D are arranged in the groove holes in different radius positions correspondingly and used for blocking the four oil way holes, and the valve assembly A, the valve assembly B, the valve assembly C and the valve assembly D are subjected to the combined action of centrifugal force and spring force. Under different rotating speeds of the gear shaft, the valve assembly A, the valve assembly B, the valve assembly C and the valve assembly D are under the combined action of centrifugal force and elastic force of a spring, the function of adaptively adjusting the lubricating oil flow under different rotating speed working conditions is achieved, and the problem that the lubricating oil supply amount is designed according to the maximum state in each state, and consequently the lubricating oil is greatly wasted under the low-rotating-speed working condition is solved.

Description

Technical Field

[0001] The invention relates to an adaptive lubricating oil flow regulating mechanism, belonging to the technical field of aviation engines. Background Art

[0002] The transmission gearbox of an aircraft engine has a high speed and a large transmission power, and therefore requires sufficient lubrication. The traditional lubrication method is to calculate the maximum lubricating oil demand of each lubrication point and design the lubricating oil injection amount based on the lubricating oil amount. Since the speeds of the gears in the transmission gearbox are different under different working conditions, the required amount of lubricating oil is also different. This will cause the oil supply designed according to the maximum lubricating oil demand to cause a great waste of lubricating oil under low speed conditions, and at the same time increase the load on the lubricating oil system, and increase the mass and volume of the lubricating oil tank and the lubricating oil pump. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides an adaptive lubricating oil flow regulating mechanism.

[0004] The present invention is achieved through the following technical solutions.

[0005] The present invention provides an adaptive lubricating oil flow regulating mechanism, comprising:

[0006] An adaptive lubricating oil flow regulating mechanism for adaptively regulating the lubricating oil flow under different speed conditions.

[0007] The invention comprises a gear shaft, wherein a through hole for lubricating oil to pass through is arranged at the center of the gear shaft, and pockets for lubricating oil to accumulate are arranged in the through hole of the gear shaft; the pockets are four evenly distributed in a circumferential array.

[0008] The four pockets correspond to slots connected through oil passage holes, and the four slots are radially distributed at different radii from the axis of the gear shaft; each of the four slots has a nozzle corresponding to it, and the nozzle sprays lubricating oil onto the gear shaft tooth portion.

[0009] The four slots are each correspondingly installed with valve assembly A, valve assembly B, valve assembly C, and valve assembly D. Valve assembly A, valve assembly B, valve assembly C, and valve assembly D are respectively arranged in slots at different radial positions for sealing the four oil holes. Valve assembly A, valve assembly B, valve assembly C, and valve assembly D are acted upon by centrifugal force and spring force.

[0010] The valve assembly A includes a valve A that blocks the oil circuit hole at a first position. The valve A can slide and displace in a slot hole at a second position. A gasket A and a spring A are installed at the guide portion of the valve A. A gasket A for adjusting the elastic force of the spring is installed at the guide portion of the valve A. The elastic force of the spring A applies pressure to the valve A, so that the valve A blocks the oil circuit hole at the first position.

[0011] The valve assembly B includes a valve B that blocks the oil circuit hole at the second position. The valve B can slide and displace in the slot hole at the second position. A gasket B and a spring B are installed at the guide part of the valve B. The spring B is installed through the gasket B. The elastic force of the spring B applies pressure to the valve B, so that the valve B blocks the oil circuit hole at the second position.

[0012] The valve assembly C includes a valve C that blocks the oil circuit hole at the third position. The valve C can slide and displace in the slot hole at the third position. A gasket C and a spring C are installed at the guide part of the valve C. The spring C is installed through the gasket C. The elastic force of the spring C applies pressure to the valve C, so that the valve C blocks the oil circuit hole at the third position.

[0013] The valve assembly D includes a valve D that blocks the oil circuit hole at the fourth position. The valve D can slide and displace in the slot hole at the fourth position. A gasket D and a spring D are installed at the guide part of the valve D. The spring D is installed through the gasket D. The elastic force of the spring D applies pressure to the valve D, so that the valve D blocks the oil circuit hole at the fourth position.

[0014] The distances between valve A, valve B, valve C, and valve D and the centerline of the gear shaft increase in sequence; valve A, valve B, valve C, and valve D are made of different materials and have different sliding friction coefficients with the slot holes; gasket A, gasket B, gasket C, and gasket D have different thicknesses; springs A, spring B, spring C, and spring D have different spring forces in the initial compression state, resulting in different rotation speeds required for valves A, valve B, valve C, and valve D to slide and open in the four slot holes.

[0015] The beneficial effects of the present invention are as follows: under different rotational speeds of the gear shaft, valve assembly A, valve assembly B, valve assembly C, and valve assembly D are acted upon by centrifugal force and spring force to realize the function of adaptively adjusting the lubricating oil flow under different speed conditions, thereby solving the problem of great waste of lubricating oil under low speed conditions caused by designing the lubricating oil supply according to the maximum state in each state. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention;

[0017] Figure 2 It is a front cross-sectional schematic diagram of the present invention; DETAILED DESCRIPTION

[0018] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the description.

[0019] like Figure 1 to Figure 2 shown.

[0020] An adaptive lubricating oil flow regulating mechanism of the present application comprises:

[0021] The shaft body is provided with a gear shaft 11 with a through hole, and the through hole of the gear shaft 11 is provided with pockets 2 for accumulating lubricating oil; the pockets 2 are four evenly distributed in a circular array.

[0022] The four pockets 2 correspond to slot holes 5 connected through oil passage holes 3, and the four slot holes 5 are radially distributed at different radial positions from the axis of the gear shaft 11; the four slot holes 5 correspond to nozzles 4 one by one, and the nozzles 4 are evenly distributed in a circular array at four places, and the nozzles 4 spray lubricating oil to the gear teeth of the gear shaft 11.

[0023] The four slots 5 are each correspondingly installed with valve components A, valve components B, valve components C, and valve components D. Valve components A, valve components B, valve components C, and valve components D are respectively arranged in the slots 5 at different radial positions to seal the four oil holes 3. Under different rotation speeds of the gear shaft 11, the four oil holes 3 controlled by valve components A, valve components B, valve components C, and valve components D are opened in sequence, realizing the function of adaptively adjusting the lubricating oil flow under different speed conditions, solving the problem of great waste of lubricating oil under low speed conditions due to the lubricating oil supply being designed according to the maximum state in each state.

[0024] The valve assembly A includes a valve A8 for blocking the oil circuit hole 3 at the first position. The valve A8 can slide and displace in the slot hole 5 at the second position. The valve A8 is installed with a spring A6 through a gasket A7. The guide part of the valve A8 is installed with a gasket A7 for adjusting the spring elastic force. The elastic force of the spring A6 applies pressure to the valve A8, so that the valve A8 blocks the oil circuit hole 3 at the first position.

[0025] The valve assembly B includes a valve B11 for blocking the oil circuit hole 3 at the second position. The valve B11 can slide and displace in the slot hole 5 at the second position. A gasket B10 and a spring B9 are installed at the guide part of the valve B11. The spring B9 is installed on the valve B11 through the gasket B10. The elastic force of the spring B9 applies pressure to the valve B11, so that the valve B11 blocks the oil circuit hole 3 at the second position.

[0026] The valve assembly C includes a valve C14 that blocks the oil circuit hole 3 at the third position. The valve C14 can slide and displace in the slot hole 5 at the third position. A gasket C13 and a spring C12 are installed at the guide part of the valve C14. The valve C14 is installed with a spring C12 through the gasket C13. The elastic force of the spring C12 applies pressure to the valve C14, so that the valve C14 blocks the oil circuit hole 3 at the third position.

[0027] The valve assembly D includes a valve D17 that blocks the oil circuit hole 3 at the fourth position. The valve D17 can slide and displace in the slot hole 5 at the fourth position. A gasket D16 and a spring D15 are installed at the guide part of the valve D17. The valve D17 is installed with the spring D15 through the gasket D16. The elastic force of the spring D15 applies pressure to the valve D17, so that the valve D17 blocks the oil circuit hole 3 at the fourth position.

[0028] Since the distances of valve A8, valve B11, valve C14, valve D17 from the through-line of gear shaft 11 are increasing in sequence; at the same time, valve A8, valve B11, valve C14, valve D17 are made of different materials, and have different sliding friction coefficients with slot hole 5; and the thicknesses of gasket A7, gasket B10, gasket C13, gasket D16 are different, the spring forces of spring A6, spring B9, spring C12, spring D15 in the initial compression state are different. Therefore, the speeds required for valve A8, valve B11, valve C14, valve D17 to slide and open in the four slot holes 5 are different.

[0029] The specific implementation is as follows.

[0030] The first state: when the gear shaft 11 is stationary, valve A8, valve B11, valve C14, valve D17 and four springs A6, spring B9, spring C12 and spring D15 close the oil holes 3 at four locations under the action of spring force, and no lubricating oil reaches the surface of the gear teeth of the gear shaft 11.

[0031] The second state: when the gear shaft 11 starts to rotate, the valve A8 is subjected to the centrifugal force and the elastic force of the spring A6. The higher the speed, the greater the centrifugal force. When the centrifugal force is greater than the elastic force of the spring A6, the first critical speed A is reached, and the valve A8 slides along the slot hole 5 at the first position. The valve A8 opens. At this time, the valve assembly A is in the open state, and the lubricating oil of the first oil circuit is sprayed onto the surface of the gear tooth portion of the gear shaft 11 through the nozzle 4 to achieve the purpose of lubrication and cooling.

[0032] The second state: when the rotation speed of the gear shaft 11 continues to increase and exceeds the critical speed A, the valve assembly A remains open, and the centrifugal force continues to increase. When the second critical speed B is reached, the valve B11 slides along the slot hole 5 at the second position, the valve assembly B opens, and the lubricating oil of the second oil circuit is sprayed onto the gear tooth surface of the gear shaft 11 through the nozzle 4. At this time, the amount of lubricating oil reaching the gear surface is the sum of the lubricating oil provided by the first and second oil circuits.

[0033] The third state: when the speed of the gear shaft 11 continues to increase and exceeds the critical speed B, the valve assembly A and the valve assembly B remain in the open state, and the centrifugal force continues to increase. When the third critical speed C is reached, the valve C14 slides along the slot hole 5 at the third position, the valve assembly C opens, and the lubricating oil of the third oil circuit is sprayed onto the gear tooth surface of the gear shaft 11 through the nozzle 4. At this time, the amount of lubricating oil reaching the gear tooth surface is the sum of the lubricating oil amounts provided by the first, second, and third oil circuits.

[0034] The fourth state: when the speed of the gear shaft 11 continues to increase and exceeds the critical speed C, valve components A, valve components B, and valve components C remain open, and the centrifugal force continues to increase. When the third critical speed D is reached, the valve D17 slides along the slot 5 at the fourth position, the valve component D opens, and the lubricating oil in the fourth oil circuit is sprayed onto the surface of the gear tooth portion of the gear shaft 11 through the nozzle 4. At this time, the amount of lubricating oil reaching the gear tooth surface is the sum of the lubricating oil amounts provided by the four oil circuits.

[0035] The adaptive lubricating oil flow regulating mechanism of the present application can realize the function of adaptively regulating the lubricating oil flow under different speed conditions, and utilizes the lubricating oil efficiently, flexibly and reasonably.

Claims

1. An adaptive lubricating oil flow regulating mechanism, characterized in that: include: An adaptive lubricating oil flow regulating mechanism for adaptively regulating the lubricating oil flow under different speed conditions.

2. The adaptive oil flow regulating mechanism according to claim 1, characterized in that: include: The gear shaft (11) has a through hole for the lubricating oil to enter on its shaft body, and pockets (2) for the lubricating oil to accumulate are provided inside the through hole of the gear shaft (11); the pockets (2) are four evenly distributed in a circular array.

3. The adaptive lubricating oil flow regulating mechanism according to claim 2, characterized in that: The four pocket holes (2) are connected to the slot holes (5) through the oil passage holes (3), and the four slot holes (5) are radially distributed at different radial positions from the axis of the gear shaft (11); the four slot holes (5) are respectively provided with nozzles (4), and the nozzles (4) spray lubricating oil to the gear teeth of the gear shaft (11).

4. The adaptive lubricating oil flow regulating mechanism according to claim 3, characterized in that: The four slots (5) are each correspondingly installed with a valve assembly A, a valve assembly B, a valve assembly C, and a valve assembly D. The valve assembly A, the valve assembly B, the valve assembly C, and the valve assembly D are respectively arranged in the slots (5) at different radial positions to block the four oil holes (3). The four oil holes (3) controlled by the valve assembly A, the valve assembly B, the valve assembly C, and the valve assembly D are opened in sequence.

5. The adaptive lubricating oil flow regulating mechanism according to claim 4, characterized in that: The valve assembly A comprises a valve A (8) for blocking an oil passage hole (3) at a first position. The valve A (8) can slide in a slot hole (5) at a second position. A washer A (7) for adjusting the elastic force of a spring is installed at a guide portion of the valve A (8). The elastic force of the spring A (6) applies pressure to the valve A (8), so that the valve A (8) blocks the oil passage hole (3) at the first position.

6. The adaptive oil flow regulating mechanism according to claim 4, characterized in that: The valve assembly B comprises a valve B (11) for blocking the oil passage hole (3) at the second position. The valve B (11) can slide and move in the slot hole (5) at the second position. The valve B (11) is installed with a spring B (9) through a gasket B (10). The elastic force of the spring B (9) applies pressure to the valve B (11), so that the valve B (11) blocks the oil passage hole (3) at the second position.

7. The adaptive lubricating oil flow regulating mechanism according to claim 4, characterized in that: The valve assembly C comprises a valve C (14) for blocking the oil passage hole (3) at the third position. The valve C (14) can slide and move in the slot hole (5) at the third position. The valve C (14) is provided with a spring C (12) via a gasket C (13). The elastic force of the spring C (12) applies pressure to the valve C (14), so that the valve C (14) blocks the oil passage hole (3) at the third position.

8. The adaptive lubricating oil flow regulating mechanism according to claim 4, characterized in that: The valve assembly D comprises a valve D (17) for blocking the oil passage hole (3) at the fourth position. The valve D (17) can slide in the slot hole (5) at the fourth position. The valve D (17) is provided with a spring D (15) via a gasket D (16). The elastic force of the spring D (15) applies pressure to the valve D (17), so that the valve D (17) blocks the oil passage hole (3) at the fourth position.

9. The adaptive lubricating oil flow regulating mechanism according to claim 4, characterized in that: The distances between the valve A (8), valve B (11), valve C (14), and valve D (17) and the centerline of the gear shaft (11) are successively larger; the materials of the valve A (8), valve B (11), valve C (14), and valve D (17) are different, and the sliding friction coefficients with the slot hole (5) are different; the thicknesses of the gasket A (7), gasket B (10), gasket C (13), and gasket D (16) are different; the spring forces of the spring A (6), spring B (9), spring C (12), and spring D (15) in the initial compression state are different, so that the speeds required for the valve A (8), valve B (11), valve C (14), and valve D (17) to slide and open in the four slot holes (5) are different.

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