阅读说明：本技术 一种直升机用吊挂装置及方法 (Hanging device and method for helicopter ) 是由 刘二东 杨乘懿 杨庆超 雍利鹏 郑龙 于 2020-11-30 设计创作，主要内容包括：本发明公开了一种直升机用吊挂装置及方法,包括挂钩、压杆和摇杆；挂钩第一端铰接固定设置；压杆第一端设置有第一压块,压杆中间部位铰接固定设置；摇杆第一端铰接固定设置,摇杆第二端设置有第二压块,摇杆中部下方设置有支撑点；当装置吊挂锁紧时,挂钩第二端与第一压块接触,挂钩第二端给第一压块远离挂钩方向的力,压杆第二端与第二压块接触,摇杆与支撑点接触,压杆第二端对第二压块施加的压力作用线位于摇杆铰接位置下方。实现快速投放货物,很好的保护相关人员、财产和直升机安全,快捷方便,可靠性、安全性高。(The invention discloses a hanging device and a method for a helicopter, which comprises a hook, a pressure rod and a rocker; the first end of the hook is hinged and fixed; a first pressing block is arranged at the first end of the pressing rod, and the middle part of the pressing rod is fixedly hinged; the first end of the rocker is fixedly hinged, the second end of the rocker is provided with a second pressing block, and a supporting point is arranged below the middle part of the rocker; when the device is hung and locked, the second end of the hook is in contact with the first pressing block, the second end of the hook gives a force to the first pressing block in the direction away from the hook, the second end of the pressure rod is in contact with the second pressing block, the rocker is in contact with the supporting point, and a pressure action line applied to the second pressing block by the second end of the pressure rod is positioned below the hinged position of the rocker. The rapid cargo throwing device has the advantages that rapid cargo throwing is realized, related personnel, property and helicopter safety are well protected, the rapid and convenient throwing device is rapid and convenient, and the reliability and the safety are high.)

1. A hanging device for a helicopter is characterized by comprising a hook (8), a pressure lever (4) and a rocker (10);

the first end of the hook (8) is hinged and fixed; a first pressing block (5) is arranged at the first end of the pressing rod (4), and the middle part of the pressing rod (4) is fixedly hinged; the first end of the rocker (10) is hinged and fixed, the second end of the rocker (10) is provided with a second pressing block (3), and a supporting point (12) is arranged below the middle part of the rocker (10);

when the device is hung and locked, the second end of the hook (8) is in contact with the first pressing block (5), the second end of the hook (8) provides the first pressing block (5) with a force far away from the direction of the hook (8), the second end of the pressing rod (4) is in contact with the second pressing block (3), the rocker (10) is in contact with the supporting point (12), and the pressure action line applied to the second pressing block (3) by the second end of the pressing rod (4) is positioned below the hinged position of the rocker (10).

2. The hanging device for the helicopter according to claim 1, characterized in that the first pressing block (5) and the second pressing block (3) are both roller wheels.

3. A suspension device for a helicopter according to claim 1 wherein the rocker (10) has a first end hinged to the middle of the connecting rod (2), a second end hinged to the connecting rod (2) has a first end hinged to the crank (1), and the second end of the crank (1) is hinged and fixed.

4. The cable suspension device of claim 1, wherein the rocker (10) is connected at a first end to a motor.

5. A hanger device for helicopters according to claim 4, wherein the hook (8) is provided with a load cell (7).

6. A suspension device for a helicopter according to claim 1 wherein the hinge point of the first end of the hook (8) is located close to the first end of the hook (8) and the side of the first end of the hook (8) remote from the second end of the hook (8) is provided with a proximity sensor (9).

7. A hanging method for a helicopter based on the device of any one of claims 1 to 6, characterized in that when the cargo (6) is hung, the cargo (6) is hung on the hook (8), the second end of the hook (8) is contacted with the first pressing block (5), the gravity of the cargo (6) is transferred to the pressure lever (4) through the hook (8), the second end of the hook (8) gives the force to the first pressing block (5) in the direction away from the hook (8), the second end of the pressure lever (4) rotates towards the second end of the rocker (10), the second end of the pressure lever (4) is contacted with the second pressing block (3), the pressure action line applied by the second end of the pressure lever (4) to the second pressing block (3) is positioned below the rocker (10), so that the rocker (10) is contacted with the supporting point (12);

when putting in goods (6), rocker (10) upwards rotates around rocker (10) first end, and second briquetting (3) and depression bar (4) second end break away from, and depression bar (4) rotate under the effect of couple (8) pressure, and first briquetting (5) and couple (8) second end break away from, and couple (8) rotate around couple (8) first end, and goods (6) break away from couple (8).

8. A method according to claim 7, wherein when the load (6) contacts the ground, the weight measured by the load cell (7) on the hook (8) is less than the threshold value, the motor rotates to drive the rocker (10) to rotate upward around the first end of the rocker (10) so that the load (6) is disengaged from the hook (8).

Technical Field

The invention belongs to the field of external hanging of helicopters, and relates to a hanging device and method for helicopters.

Background

When the helicopter carries out cargo hanging and transporting tasks, due to the fact that hanging objects are heavy, flying height is high, flying distance is long, the helicopter is required to be capable of hanging the cargo by hundreds of percent reliably, and otherwise serious threats are caused to ground personnel and property safety. Therefore, the hanger must be safe and reliable. In addition, as the helicopter needs to meet timeliness when executing a hanging task, for goods which cannot be put in the air, the opening of the hook needs to be completed at the first time after the goods are hung to a destination, and particularly in a battle task, the helicopter needs to be withdrawn from a battle area immediately, otherwise the goods become a live target of enemies.

At present, the goods for helicopter hang type equipment, its locking performance is not completely reliable, and under the aircraft driving state, even the aircraft must fall to the ground, ground service personnel are close the aircraft fast and take off the goods after, and the aircraft just can leave, and is inefficient, has very big influence to pilot, aircraft and ground service personnel safety.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a hanging device and a hanging method for a helicopter, which can realize quick cargo throwing, well protect the safety of related personnel, property and the helicopter, are quick and convenient and have high reliability and safety.

In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:

a hanging device for a helicopter comprises a hook, a pressure lever and a rocker;

the first end of the hook is hinged and fixed; a first pressing block is arranged at the first end of the pressing rod, and the middle part of the pressing rod is fixedly hinged; the first end of the rocker is fixedly hinged, the second end of the rocker is provided with a second pressing block, and a supporting point is arranged below the middle part of the rocker;

when the device is hung and locked, the second end of the hook is in contact with the first pressing block, the second end of the hook gives a force to the first pressing block in the direction away from the hook, the second end of the pressure rod is in contact with the second pressing block, the rocker is in contact with the supporting point, and a pressure action line applied to the second pressing block by the second end of the pressure rod is positioned below the hinged position of the rocker.

Preferably, the first pressing block and the second pressing block both adopt rollers.

Preferably, the middle part of the rocker is hinged with a first end of a connecting rod, the second end of the connecting rod is hinged with a first end of a crank, and the second end of the crank is hinged and fixed.

Preferably, the first end of the rocker is connected with a motor.

Further, a weighing sensor is arranged on the hook.

Preferably, the hinge point of the first end of the hook is close to the first end of the hook, and a proximity sensor is arranged on one side, away from the second end of the hook, of the first end of the hook.

When goods are hung, the goods are hung on a hook, the second end of the hook is in contact with a first pressing block, the gravity of the goods is transmitted to a pressing rod through the hook, the second end of the hook provides the first pressing block with force far away from the direction of the hook, the second end of the pressing rod rotates towards the second end of a rocker, the second end of the pressing rod is in contact with the second pressing block, and a pressure action line applied to the second pressing block by the second end of the pressing rod is positioned below the rocker so that the rocker is in contact with a supporting point;

when the goods are put in, the rocker rotates upwards around the first end of the rocker, the second pressing block is separated from the second end of the pressing rod, the pressing rod rotates under the action of the pressure of the hook, the first pressing block is separated from the second end of the hook, the hook rotates around the first end of the hook, and the goods are separated from the hook.

Preferably, when the goods touch the ground, when the weight obtained by the measurement of the weighing sensor on the hook is smaller than the threshold value, the motor rotates to drive the rocker to rotate upwards around the first end of the rocker, so that the goods are separated from the hook.

Compared with the prior art, the invention has the following beneficial effects:

according to the device, the hook applies pressure to the pressure rod through the lever principle, the pressure rod always presses the second pressure block to generate a negative angle, the rocker is always attached to the supporting point, the negative angle locking principle is utilized to achieve reliable locking, the locking is more reliable and safer than the conventional locking based on friction force, when goods need to be put in, the rocker only needs to be lifted upwards, the second pressure block is separated from the second end of the pressure rod, the goods can be automatically separated without assistance of ground service staff, and the safety factor is high.

Further, first briquetting and second briquetting all adopt the gyro wheel, when breaking away from, reduce the frictional resistance who breaks away from, avoid the card to pause to realize breaking away from fast and put in.

Furthermore, the motor is controlled to rotate, so that the device can be separated and put in, convenience and rapidness are realized, assistance of ground staff is not needed, and the operation can be realized only through a driver.

Further, the driver can put in the goods according to the weight information detected by the weighing sensor, so that the goods can be safely and reliably put in the goods, and the automatic putting in can be realized through a threshold value, so that the goods can be quickly and automatically put in.

Further, detect couple first end rather than distance through proximity sensor to acquire the couple and open and the closure state, make things convenient for the driver to judge the couple state that opens and shuts, ensure the safety of aircraft, improved the goods and hung, conveying efficiency.

The method can be used for fast hanging and loading, the hanging is reliable in the transportation process, and when the goods need to be put in, the rocker is only required to be lifted upwards to separate the second pressing block from the second end of the pressing rod, so that the goods can be automatically separated without the assistance of ground service personnel, and the safety coefficient is high.

Further, when the goods touch to the ground, compare actual weight through the threshold value, can the automatic control motor drive the rocker upwards rotate around the first end of rocker, make the goods break away from the couple. Need not the pilot and control the goods and put in, need not the ground service personnel and take off the goods, need not the aircraft and fall to the ground, realize quick, the automatic goods of puting in.

Drawings

FIG. 1 is a schematic view of a cargo hanger according to the present invention;

fig. 2 is a schematic diagram of the cargo release structure of the present invention.

Wherein: 1-a crank; 2-a connecting rod; 3-second briquetting; 4-a pressure bar; 5-first briquetting; 6-cargo; 7-a weighing sensor; 8-hanging hooks; 9-a proximity sensor; 10-a rocker; 11-locking surface; 12-support point.

Detailed Description

The invention is described in further detail below with reference to the accompanying drawings:

as shown in fig. 1, the suspension device for a helicopter according to the present invention includes a hook 8, a pressure bar 4, and a rocker 10.

The hook 8 has two ends, the first end of the hook 8 is hinged and fixed, and the pressure lever 4 is positioned at the side of the second end of the hook 8; the compression bar 4 has two ends, a first compression block 5 is arranged at the first end of the compression bar 4, the middle part of the compression bar 4 is fixedly hinged, and the bottom of the second end of the hook 8 is in contact with the top of the compression block towards one side of the first end of the hook 8; the rocker 10 has two ends in common, the rocker 10 is positioned right above the hook 8, the first end of the rocker 10 is fixedly hinged, the second end of the rocker 10 is provided with a second pressing block 3, and a supporting point 12 is arranged right below the middle part of the rocker 10; the middle part of the rocker 10 is hinged with a first end of a connecting rod 2, a second end of the connecting rod 2 is hinged with a first end of a crank 1, and the second end of the crank 1 is hinged and fixed.

When the device is hung and locked, the second end of the hook 8 is in compression contact with the first pressing block 5, the contact point is the position of the top of the first pressing block 5 facing the first end of the hook 8, the second end of the hook 8 provides force for the first pressing block 5 to be far away from the direction of the hook 8, the second end of the pressing rod 4 is in compression contact with the second pressing block 3, the rocker 10 is in contact with the supporting point 12, and the pressure action line applied to the second pressing block 3 by the second end of the pressing rod 4 is located below the hinged position of the rocker 10.

The first pressing block 5 and the second pressing block 3 both adopt rollers. Therefore, when the separation is carried out, the friction resistance of the separation is reduced, the blockage is avoided, and the rapid separation and the throwing are realized.

The second end of the pressure lever 4 is provided with an L-shaped deadlocking surface 11.

The second end of the crank 1 is connected with a motor, and the motor is controlled to rotate, so that the device can be separated and put in conveniently and quickly without assistance of ground staff, and the operation can be performed only by a driver.

Be provided with weighing sensor 7 on the couple 8, can put in through the weight information that weighing sensor 7 detected, the driver, guarantee goods 6 safety and reliable input to when goods 6 contacts to earth, can realize through the threshold value that quick, automatic input goods 6.

The pin joint of 8 first ends of couple is close to 8 first ends of couple and sets up, and one side that 8 first end principle couples 8 second ends of couple is provided with proximity sensor 9, detects 8 first ends of couple and its distance through proximity sensor 9 to acquire 8 opening of couple and closure state, make things convenient for the driver to judge, ensure flight and hang transportation safety, improved 6 cable of goods and transport efficiency.

As shown in fig. 1, when the cargo 6 is transported by the hanging device, the cargo 6 is hung on the hook 8, the gravity of the cargo 6 is transmitted to the pressure lever 4 through the hook 8, and the pressure lever 4 generates a counterclockwise torque M1 under the pressure F1 of the hook 8, so that the pressure lever 4 tends to rotate counterclockwise. The dead locking surface 11 at the second end of the pressure lever 4 transmits M1 to the roller of the second pressure block 3 at the second end of the rocker 10, and generates downward oblique pressure F2 on the second pressure block 3; because the action line of F2 has a negative included angle alpha with the connecting line of the rocker 10, the force F2 generates a clockwise torque M2 to the rocker 10, and the torque M2 generates a clockwise rotation trend of the rocker 10. The rocker 10 is placed on the supporting point 12, the supporting point 12 supports and limits the rocker 10, and the torque generated by the acting force of the supporting point 12 is balanced with M2, so that the locking mechanism is in a balanced state.

Therefore, under the condition that the goods 6 are hung, the rocker 10 is always pressed, the mechanism can be always reliably locked, and according to stress analysis, the larger the hanging load is, the larger the pressure on the rocker 10 is, and the more reliably the locking structure is locked.

As shown in fig. 1, when the cargo 6 needs to be thrown in, the crank 1 drives the connecting rod 2 to rotate, and in a critical state, according to the moment balance principle, the dead locking surface 11 is acted by M2, the connecting rod 2 needs to apply counterclockwise moments with the same magnitude and opposite directions, and further, the moment M3 that the crank 1 drives the connecting rod 2 to rotate is known, that is, the minimum starting moment of the servo motor is M3. According to the lever principle, after the gravity of the goods 6 is transmitted by the levers at all levels, the starting torque of the servo motor is far smaller than the torque generated by the gravity of the goods 6.

As shown in FIG. 2, when the cargo 6 is released, the servo motor starts with a starting torque M larger than M3_{Electric machine}When the mechanism is started, the crank 1 rotates anticlockwise, the mechanism acts, the connecting rod 2 drives the rocker 10 to rotate anticlockwise, and the roller of the second pressing block 3 at the end of the rocker 10 rolls on the dead lock surface 11. When the roller of the second pressing block 3 slides out of the locking surface 11 of the pressing rod 4, the roller is rotatedThe mechanism receives 6 gravity effects of goods, and locking mechanism loses balance in the twinkling of an eye, and depression bar 4 anticlockwise rotates immediately, and couple 8 slips from 5 gyro wheels of first briquetting below depression bar 4 simultaneously, and couple 8 is opened, and 6 drops in of goods.

In order to realize the automatic putting of the goods 6 when touching the ground, the hook 8 body is designed into a strain sensor with a weighing function, the output weighing signal is transmitted to a flight control system after being compared and amplified, and the hanging weight value is displayed in real time, including the weight change value caused by impact or acceleration.

After the aircraft hangs the goods 6 and flies to the destination, the aircraft reduces the height, and goods 6 touches to the ground, and the weight on couple 8 reduces in the twinkling of an eye, and after weight is less than the threshold value that sets for in advance, the weight signal triggers flight control system relay, and the system automatic start servo motor to open couple 8, accomplish the goods 6 fast and touch to the ground automatic task of puting in.

As shown in figure 2, when the mechanism is reset, the hook 8 is pulled upwards, the pressure lever 4 rotates clockwise under the action of upward component force of the hook 8, the second end of the hook 8 slides over the roller of the first pressure block 5 of the pressure lever 4 and enters the locking area of the locking surface 11, the pressure lever 4 rotates clockwise under the action of upward component force of the hook 8, when the top inclined plane of the second end of the pressure lever 4 passes over the roller of the second pressure block 3 of the rocker 10, the roller of the second pressure block 3 falls back into the locking surface 11, and meanwhile, the connecting rod 2 and the crank 1 also complete the reset action. Then, under the action of the gravity of the hook 8, the second end of the hook 8 is pressed on the roller of the first pressing block 5 of the pressing rod 4, and the whole mechanism is reset.

In order to realize the real-time monitoring of the opening and closing states of the hook 8 of the hanging device, the non-contact proximity sensor 9 based on the Hover effect is applied to transmit the state signal to the flight control system in real time, so that the rapid and accurate position state monitoring is realized. The inductive probe of the proximity sensor 9 is fixedly arranged on the device shell, and the magnetic target is arranged on the hook 8 and rotates along with the hook 8.

The above-mentioned contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical idea of the present invention falls within the protection scope of the claims of the present invention.