阅读说明：本技术 一种直升机传动系统主动抗弹击失油系统及方法 (Active anti-bounce oil loss system and method for helicopter transmission system ) 是由 王鉴 李英明 林展 于 2020-10-30 设计创作，主要内容包括：本发明属于传动技术领域,具体涉及一种直升机传动系统主动抗弹击失油系统及方法。包括传动装置(1)、真空发生器(2)、传感器(3)、控制器(4),所述传动装置(1)壳体内盛有油液；所述传感器(3)具有感应探头的一端伸入所述传动装置(1)壳体内；所述真空发生器(2)负压口伸入所述传动装置(1)壳体内；所述真空发生器(2)负压口位置高于所述传动装置(1)壳体内油液的最大液面高度；所述控制器(4)与所述传感器(3)和所述真空发生器(2)分别电连接。本发明通过真空发生器产生负压抑制弹击等原因造成的传动系统油液流失,从而有效提升直升机等飞行器在严苛战场环境下的生存力,保障飞行器安全,保护飞行员生命安全。(The invention belongs to the technical field of transmission, and particularly relates to an active bounce-resistant oil loss system and method for a helicopter transmission system. The device comprises a transmission device (1), a vacuum generator (2), a sensor (3) and a controller (4), wherein oil is contained in a shell of the transmission device (1); one end of the sensor (3) with an induction probe extends into the shell of the transmission device (1); the negative pressure port of the vacuum generator (2) extends into the shell of the transmission device (1); the position of a negative pressure port of the vacuum generator (2) is higher than the maximum liquid level height of oil in the shell of the transmission device (1); the controller (4) is electrically connected with the sensor (3) and the vacuum generator (2) respectively. According to the invention, negative pressure generated by the vacuum generator is used for inhibiting oil loss of the transmission system caused by the reasons of impact and the like, so that the viability of aircrafts such as helicopters and the like in a severe battlefield environment is effectively improved, the safety of the aircrafts is ensured, and the life safety of pilots is protected.)

1. The active anti-bounce oil loss system of the helicopter transmission system is characterized by comprising a transmission device (1), a vacuum generator (2), a sensor (3) and a controller (4), wherein oil is contained in a shell of the transmission device (1);

one end of the sensor (3) with an induction probe extends into the shell of the transmission device (1) and is used for detecting the liquid level change of oil in the transmission device or the oil pressure change in the cavity of the transmission device;

the negative pressure port of the vacuum generator (2) extends into the shell of the transmission device (1) and is used for generating negative pressure in the transmission device; the position of a negative pressure port of the vacuum generator (2) is higher than the maximum liquid level height of oil in the shell of the transmission device (1);

the controller (4) is electrically connected with the sensor (3) and the vacuum generator (2) respectively and is used for receiving a liquid level change or oil pressure change signal sent by the sensor (3) and sending a corresponding opening or closing instruction signal to the vacuum generator (2) according to the received liquid level change or oil pressure change signal so as to inhibit oil leakage in the transmission device.

2. Active anti-bounce fuel loss system of a helicopter transmission system according to claim 1 characterized in that said transmission (1) can be one of a retarder, a fuel tank.

3. Active ballistic resistant oil-loss system for helicopter transmission systems according to claim 1 characterized in that the height position where the end of said sensor (3) with an inductive probe protrudes into the casing of said transmission (1) is determined according to a transmission failure-free threshold.

4. An active anti-bounce and oil-loss method for a helicopter transmission system, which is characterized in that the active anti-bounce and oil-loss system for the helicopter transmission system as claimed in any one of claims 1 to 3 is adopted, and comprises the following steps:

s1: the liquid level change or the oil pressure change of oil in the transmission device is detected through the sensor (3);

s2: receiving, by the controller (4), a detection signal of the sensor (3);

s3: the controller (4) judges the received detection signal and judges whether the liquid level height of the oil in the transmission device is lower than a non-failure threshold value or not;

s4: when the controller (4) judges that the liquid level of oil in the transmission device is lower than a non-failure threshold value, the controller (4) can send a command to start the vacuum generator (2);

s5: the negative pressure generated by the vacuum generator (2) suppresses the leakage of oil from the transmission (1).

5. The active ballistic resistant oil-loss method for helicopter transmission systems according to claim 4 characterized in that in said step S1, said sensor (3) can also detect and obtain the oil pressure in the transmission cavity at the same time.

6. The active ballistic resistant fuel loss method for a helicopter transmission system of claim 4 wherein in said step S3 said controller (4) determines said received detection signal to determine if the oil pressure in the transmission cavity is below a non-failure threshold.

7. The active ballistic resistant fuel loss method for a helicopter transmission system according to claim 4 wherein when said controller (4) determines that the level of oil in the transmission is below a non-failure threshold, said controller (4) will issue a confirmation selection prompt, which upon confirmation by the operator will issue a command to turn on said vacuum generator (2).

8. An active ballistic resistant loss-of-oil helicopter having a helicopter transmission system active ballistic resistant loss-of-oil system as claimed in any one of claims 1 to 3.

Technical Field

The invention belongs to the technical field of helicopter transmission, and particularly relates to an active bounce-attack-resistant oil loss system and method for a helicopter transmission system.

Background

The typical configuration of a helicopter transmission system is "three-axis two", i.e., a main reducer, a tail reducer, an intermediate reducer, a power transmission shaft, and a tail transmission shaft. Helicopters, especially military helicopters, will operate in complex, often complex, battlefield environments, and the main reducers, etc. in the transmission system may be shot through holes, resulting in oil loss, which may cause failure of the transmission system and crash of the helicopter.

Therefore, the requirements of dry running for a plurality of times after oil loss are provided for the transmission system of the helicopter at present so as to ensure that the speed reducer has certain dry running capacity, such as that the dry running capacity of a main speed reducer of Apache is 1h, the dry running capacity of an Italian A129 helicopter is 30min, the dry running capacity of a tiger helicopter is 30min and the like.

However, the conventional dry running method for coping with impact has the following problems: a large transmission system weight penalty is required; and the transmission system after dry running may be damaged completely; and also seriously endangers the life safety of the driver.

Disclosure of Invention

The purpose of the invention is as follows: aiming at the defects of the prior art, the invention provides an active bounce-off resistant oil loss system and method for a helicopter transmission system, which can solve the problems brought by the conventional dry running method.

The technical scheme of the invention is as follows: in order to achieve the above object, according to a first aspect of the present invention, there is provided an active anti-bounce and oil-loss system for a helicopter transmission system, comprising a transmission device 1, a vacuum generator 2, a sensor 3, and a controller 4, wherein oil is contained in a casing of the transmission device 1;

one end of the sensor 3, which is provided with an induction probe, extends into the shell of the transmission device 1 and is used for detecting the liquid level change of oil in the transmission device or the oil pressure change in the cavity of the transmission device;

the negative pressure port of the vacuum generator 2 extends into the shell of the transmission device 1 and is used for generating negative pressure in the transmission device; the position of a negative pressure port of the vacuum generator 2 is higher than the maximum liquid level height of oil in the shell of the transmission device 1;

the controller 4 is electrically connected with the sensor 3 and the vacuum generator 2 respectively and is used for receiving a liquid level change or oil pressure change signal sent by the sensor 3 and sending a corresponding opening or closing instruction signal to the vacuum generator 2 according to the received liquid level change or oil pressure change signal so as to inhibit oil leakage in the transmission device.

In one possible embodiment, the transmission 1 may be one of a retarder and a fuel tank.

In a possible embodiment, the height of the end of the sensor 3 with the inductive probe that protrudes into the casing of the transmission 1 is determined according to a transmission failure threshold, which is the amount of oil required to ensure that the helicopter can safely land in the event of a ballistic impact on the helicopter transmission.

According to a second aspect of the present invention, there is provided an active bounce-resistant oil-loss method for a helicopter transmission system, which is directed to the active bounce-resistant oil-loss system for the transmission system, and includes the following steps:

s1: the liquid level change or the oil pressure change of oil in the transmission device is detected through the sensor 3;

s2: receiving, by the controller 4, a detection signal of the sensor 3;

s3: the controller 4 judges the received detection signal and judges whether the liquid level height of the oil in the transmission device is lower than a non-failure threshold value;

s4: when the controller 4 judges that the liquid level of oil in the transmission device is lower than a non-failure threshold value, the controller 4 can send a command to start the vacuum generator 2;

s5: the negative pressure generated by the vacuum generator 2 suppresses the leakage of oil from the transmission 1.

In a possible embodiment, in step S1, the sensor 3 may also simultaneously detect and obtain the oil pressure in the transmission cavity.

In one possible embodiment, in step S3, the controller 4 determines whether the received detection signal indicates that the oil pressure in the transmission chamber is lower than the non-failure threshold.

In one possible embodiment, in step S4, when the controller 4 determines that the oil level in the transmission is below the non-failure threshold, the controller 4 will issue a confirmation selection prompt, which is confirmed by the operator to command the vacuum generator 2 to turn on.

According to a third aspect of the invention, an active bounce fuel loss resistant helicopter is provided, having an active bounce fuel loss resistant system of a helicopter transmission system as described above.

The invention has the beneficial effects that: according to the invention, the loss of the lubricating oil of the transmission system caused by the reason that the vacuum generator generates negative pressure to inhibit the impact and the like is avoided, so that the viability of aircrafts such as helicopters and the like in a severe battlefield environment is effectively improved, the damage of dry running to the transmission system is avoided, the safety of the aircrafts is ensured, and the life safety of pilots is protected.

Drawings

FIG. 1 is a schematic view of an active anti-bounce oil loss system of a transmission system according to the present invention

FIG. 2 is a flow chart of an active bounce-off resistant method for a transmission system according to the present invention

FIG. 3 is a schematic view of an oil loss system according to an embodiment of the present invention

Wherein:

1-transmission device, 2-vacuum generator, 3-sensor, 4-controller

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present invention, and the terms "first", "second", "third" are used for descriptive purposes only and are not intended to indicate or imply relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; there may be communication between the interiors of the two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 and 3, the active anti-bounce oil-loss system of the helicopter transmission system comprises a transmission device 1, a vacuum generator 2, a sensor 3 and a controller 4, wherein oil is contained in a shell of the transmission device 1; the transmission 1 may be a reducer;

one end of the sensor 3, which is provided with an induction probe, extends into the shell of the transmission device 1 and is used for detecting the liquid level change of oil in the transmission device or the oil pressure in the cavity of the transmission device;

the negative pressure port of the vacuum generator 2 extends into the shell of the transmission device 1 and is used for generating negative pressure in the transmission device; the position of a negative pressure port of the vacuum generator 2 is higher than the maximum liquid level height of oil in the shell of the transmission device 1;

the controller 4 is electrically connected with the sensor 3 and the vacuum generator 2 respectively, and is used for receiving a liquid level change or oil pressure change signal sent by the sensor 3 and sending a corresponding opening or closing instruction signal to the vacuum generator 2 according to the received liquid level change or oil pressure change signal so as to realize the inhibition of oil leakage in the transmission device;

the height position of one end of the sensor 3 with an induction probe extending into the shell of the transmission device 1 is determined according to a transmission device non-failure threshold value, and the height position of the induction end of the sensor 3 connected with the transmission device 1 is determined to be H1 according to the transmission device non-failure threshold oil height H1;

as shown in fig. 2, an active bounce-resistant oil-loss method for a helicopter transmission system, which aims at the active bounce-resistant oil-loss system of the transmission system, includes the following steps:

s1: the liquid level change or the oil pressure change of oil in the transmission device is detected through the sensor 3;

s2: receiving, by the controller 4, a detection signal of the sensor 3;

s3: the controller 4 judges the received detection signal and judges whether the liquid level height of the oil in the transmission device is lower than a non-failure threshold value;

s4: when the controller 4 judges that the liquid level of oil in the transmission device is lower than a non-failure threshold value, the controller 4 can send a command to start the vacuum generator 2;

s5: the oil is restrained from leaking from the transmission 1 by the negative pressure generated by the vacuum generator 2;

in the step S4, when the controller 4 determines that the oil liquid level in the transmission device is lower than the non-failure threshold, the controller 4 will send a confirmation selection prompt, and after confirmation by an operator, send an instruction to start the vacuum generator 2;

the helicopter with the active anti-bounce and oil-loss system for the helicopter transmission system is provided.

While the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.