CA2893341A1 - Casing opening/closing system of an unmanned helicopter - Google Patents
Casing opening/closing system of an unmanned helicopter Download PDFInfo
- Publication number
- CA2893341A1 CA2893341A1 CA2893341A CA2893341A CA2893341A1 CA 2893341 A1 CA2893341 A1 CA 2893341A1 CA 2893341 A CA2893341 A CA 2893341A CA 2893341 A CA2893341 A CA 2893341A CA 2893341 A1 CA2893341 A1 CA 2893341A1
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- Canada
- Prior art keywords
- casing
- opening
- unmanned helicopter
- closing
- hatch
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Abstract
A casing opening/closing system of an unmanned helicopter, the unmanned helicopter includes a casing, a motor, a rotor wing and a tail pipe; one end of the motor and one end of the tail pipe are mounted in the casing; the casing opening/closing system includes: a hatch arranged on the upper part of the casing, an opening/closing cover arranged on the hatch and a retractable device; the opening/closing cover is articulated with the casing by means of a hinge, the retractable device is mounted in the casing and is connected with the opening/closing cover for controlling the opening/closing cover to open and close the hatch. Compressed underspin airflow rotating at the rotor wing at high speed is introduced into the casing through the hatch arranged on the upper part of the casing by the casing opening/closing system of an unmanned helicopter, heat in the casing is directly removed by underspin airflow, with high heat emission efficiency, cooling down the motor in the casing.
Description
CASING OPENING/CLOSING SYSTEM OF AN UNMANNED
HELICOPTER
TECHNICAL FIELD
The invention relates to the field of unmanned helicopter, and more particularly, to a casing opening/closing system of an unmanned helicopter.
BACKGROUND OF THE INVENTION
With good ability to adapt to weather, an unmanned rotary-wing helicopter is widely applied to civilian and military fields for aerial photographing, overhead line stringing and line patrolling, etc.
However, in the process of actual use, in the event of a special working condition, the unmanned helicopter needs hovering for a long time. However, its internal temperature will rise because natural air cooling is unavailable to the unmanned helicopter by high-speed movement, which may result in malfunction of the engine by overheating, or even result in crash of the unmanned helicopter, thus causing enormous economic losses.
The prior patent Unmanned Helicopter with an Engine Radiator Shield (Application number:
201310635702.2) solves the above-mentioned problems to a certain extent.
However, obvious defects still exist. The heat emission efficiency is lower because only heat-removal meshes of the radiator shield are relied on for heat emission, heat in the engine is still unable to be removed rapidly, the temperature of the engine is still relatively high, and the fault probability is still relatively high.
SUMMARY OF THE INVENTION
According to one aspect of the invention, there is provided a casing opening/closing system of an unmanned helicopter, the unmanned helicopter comprises a casing, a motor, a rotor wing and a tail pipe; one end of the motor and one end of the tail pipe are mounted in the casing; wherein, the casing opening/closing system comprises: a hatch arranged on the upper part of the casing, an opening/closing cover arranged on the hatch and a retractable device; the opening/closing cover is articulated with the casing by means of a hinge, the retractable device is mounted in the casing and is connected with the opening/closing cover for controlling the opening/closing cover to open and close the hatch.
Preferably, the retractable device includes a foundation seat, a swing link, a connecting rod, a sliding block, a threaded rod and a motor; the threaded rod is rotatably mounted in the foundation seat, the sliding block is mounted on the threaded rod through the threaded connection, the motor is mounted in the foundation seat for driving the threaded rod to rotate, the inner end of the swing link is articulated inside the foundation seat, the outer end of the swing link is connected with the opening/closing cover by means of the connecting rod, and the outer end of the sliding block is positioned in a swing drive slot which is arranged at the inner end of the swing link.
Preferably, the foundation seat is internally provided with a linear guideway which is in parallel with the threaded rod, and the inner end of the sliding block is slidably mounted on the linear guideway.
Preferably, a spindle of the motor is coaxially connected with the threaded rod, the spindle is also provided with a limit wheel positioned in a limit slot arranged on the foundation seat.
Preferably, two opening/closing covers are provided and respectively mounted at both sides of the hatch.
Preferably, the casing is internally provided with a spoiler which is arranged slantwise.
In some embodiments, compressed underspin airflow rotating at the rotor wing at high speed is introduced into the casing through the hatch arranged on the upper part of the casing by the casing opening/closing system of an unmanned helicopter, heat in the casing is directly removed by underspin airflow, with high heat emission efficiency, cooling down the engine in the casing.
The opening/closing cover mounted on the hatch is controlled by the retractable device. The hatch is opened if it is necessary to dissipate heat by making use of underspin airflow so as to guarantee the heat dissipation effect. The hatch is closed when the helicopter is flying at high speed, and heat dissipation is achieved by natural air cooling, thus avoiding increasing flight drag from the opening/closing cover opened, with high flexibility in use.
A lead-screw structure consists of the sliding block and the threaded rod of the retractable
HELICOPTER
TECHNICAL FIELD
The invention relates to the field of unmanned helicopter, and more particularly, to a casing opening/closing system of an unmanned helicopter.
BACKGROUND OF THE INVENTION
With good ability to adapt to weather, an unmanned rotary-wing helicopter is widely applied to civilian and military fields for aerial photographing, overhead line stringing and line patrolling, etc.
However, in the process of actual use, in the event of a special working condition, the unmanned helicopter needs hovering for a long time. However, its internal temperature will rise because natural air cooling is unavailable to the unmanned helicopter by high-speed movement, which may result in malfunction of the engine by overheating, or even result in crash of the unmanned helicopter, thus causing enormous economic losses.
The prior patent Unmanned Helicopter with an Engine Radiator Shield (Application number:
201310635702.2) solves the above-mentioned problems to a certain extent.
However, obvious defects still exist. The heat emission efficiency is lower because only heat-removal meshes of the radiator shield are relied on for heat emission, heat in the engine is still unable to be removed rapidly, the temperature of the engine is still relatively high, and the fault probability is still relatively high.
SUMMARY OF THE INVENTION
According to one aspect of the invention, there is provided a casing opening/closing system of an unmanned helicopter, the unmanned helicopter comprises a casing, a motor, a rotor wing and a tail pipe; one end of the motor and one end of the tail pipe are mounted in the casing; wherein, the casing opening/closing system comprises: a hatch arranged on the upper part of the casing, an opening/closing cover arranged on the hatch and a retractable device; the opening/closing cover is articulated with the casing by means of a hinge, the retractable device is mounted in the casing and is connected with the opening/closing cover for controlling the opening/closing cover to open and close the hatch.
Preferably, the retractable device includes a foundation seat, a swing link, a connecting rod, a sliding block, a threaded rod and a motor; the threaded rod is rotatably mounted in the foundation seat, the sliding block is mounted on the threaded rod through the threaded connection, the motor is mounted in the foundation seat for driving the threaded rod to rotate, the inner end of the swing link is articulated inside the foundation seat, the outer end of the swing link is connected with the opening/closing cover by means of the connecting rod, and the outer end of the sliding block is positioned in a swing drive slot which is arranged at the inner end of the swing link.
Preferably, the foundation seat is internally provided with a linear guideway which is in parallel with the threaded rod, and the inner end of the sliding block is slidably mounted on the linear guideway.
Preferably, a spindle of the motor is coaxially connected with the threaded rod, the spindle is also provided with a limit wheel positioned in a limit slot arranged on the foundation seat.
Preferably, two opening/closing covers are provided and respectively mounted at both sides of the hatch.
Preferably, the casing is internally provided with a spoiler which is arranged slantwise.
In some embodiments, compressed underspin airflow rotating at the rotor wing at high speed is introduced into the casing through the hatch arranged on the upper part of the casing by the casing opening/closing system of an unmanned helicopter, heat in the casing is directly removed by underspin airflow, with high heat emission efficiency, cooling down the engine in the casing.
The opening/closing cover mounted on the hatch is controlled by the retractable device. The hatch is opened if it is necessary to dissipate heat by making use of underspin airflow so as to guarantee the heat dissipation effect. The hatch is closed when the helicopter is flying at high speed, and heat dissipation is achieved by natural air cooling, thus avoiding increasing flight drag from the opening/closing cover opened, with high flexibility in use.
A lead-screw structure consists of the sliding block and the threaded rod of the retractable
2 device, characterized by high reliability, smooth movement, high precision and high transmission efficiency. The motor provides the sliding block with larger thrust by means of smaller torque so that the sliding block may be enough to toggle the swing link to open or close the opening/closing cover subject to larger wind drag by means of the connecting rod, to control the position of the movement of the sliding block, to avoid the opening/closing cover from being opened excessively or insufficiently, to prevent the sliding block from breaking away from the swing drive slot, and to avoid damaging the opening/closing system.
The sliding block is also mounted on the linear guideway so that both the linear guideway and the threaded rod may jointly form a guiding role in the movement of the sliding block, thus further improving the movement stability of the sliding block.
The limit wheel may avoid the threaded rod from axial movement, thus guaranteeing the accuracy in movement of the sliding block and avoiding the opening/closing cover from being opened excessively or insufficiently due to positional deviation in movement of the sliding block.
Two opening/closing covers are arranged in a split way, the weight of each opening/closing cover is reduced, thus reducing both the resistance and impetus for opening or closing the opening/closing covers, and improving the speed of opening or closing the opening/closing covers.
Under the condition that the size of the hatch is determined, the width of each opening/closing cover is reduced, thus increasing the distance from its edge to the rotor wing when the opening/closing covers are opened, preventing the rotor wing from colliding with the opening/closing covers, and avoiding crash of the unmanned helicopter from damage of the rotor wing.
The spoiler arranged slantwise in the casing may lead airflow flowing into the casing to the engine, which further improves the speed of removing heat from the engine by airflow.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 is the overall structure diagram of the casing opening/closing system of an unmanned helicopter.
Fig. 2 is a partial enlarged drawing of Part A in Fig. 1.
Fig. 3 is a diagram showing the internal structure of the retractable device when the hatch is
The sliding block is also mounted on the linear guideway so that both the linear guideway and the threaded rod may jointly form a guiding role in the movement of the sliding block, thus further improving the movement stability of the sliding block.
The limit wheel may avoid the threaded rod from axial movement, thus guaranteeing the accuracy in movement of the sliding block and avoiding the opening/closing cover from being opened excessively or insufficiently due to positional deviation in movement of the sliding block.
Two opening/closing covers are arranged in a split way, the weight of each opening/closing cover is reduced, thus reducing both the resistance and impetus for opening or closing the opening/closing covers, and improving the speed of opening or closing the opening/closing covers.
Under the condition that the size of the hatch is determined, the width of each opening/closing cover is reduced, thus increasing the distance from its edge to the rotor wing when the opening/closing covers are opened, preventing the rotor wing from colliding with the opening/closing covers, and avoiding crash of the unmanned helicopter from damage of the rotor wing.
The spoiler arranged slantwise in the casing may lead airflow flowing into the casing to the engine, which further improves the speed of removing heat from the engine by airflow.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 is the overall structure diagram of the casing opening/closing system of an unmanned helicopter.
Fig. 2 is a partial enlarged drawing of Part A in Fig. 1.
Fig. 3 is a diagram showing the internal structure of the retractable device when the hatch is
3 opened.
Fig. 4 is a diagram showing the internal structure of the retractable device when the hatch is closed.
DESCRIPTION OF THE EMBODIMENTS
In the casing opening/closing system of an unmanned helicopter, as shown in Figs. 1-4, the unmanned helicopter includes a casing 1, an engine 2, a rotor wing 3 and a tail pipe 4; one end of the engine 2 and one end of the tail pipe 4 are mounted in the casing 1.
The casing opening/closing system includes: a hatch 5 arranged on the upper part of the casing 1, an opening/closing cover 6 arranged on the hatch 5 and a retractable device 7.
The opening/closing cover 6 is articulated with the casing 1 by means of a hinge. Two opening/closing covers 6 are provided and respectively mounted at both sides of the hatch 5 so that the two opening/closing covers 6 are arranged in a split way.
The retractable device 7 is mounted in the casing 1 for controlling the opening/closing cover 6 to open or close the hatch 5.
The retractable device 7 includes a foundation seat 8, a swing link 9, a connecting rod 10, a sliding block 11, a threaded rod 12 and a motor 13; the threaded rod 12 is rotatably mounted in the foundation seat 8, the sliding block 11 is mounted on the threaded rod 12 through the threaded connection, a lead-screw mechanism consists of the sliding block 11 and the threaded rod 12, the motor 13 is mounted in the foundation seat 8 for driving the threaded rod 12 to rotate, the inner end of the swing link 9 is articulated inside the foundation seat 8, the outer end of the swing link 9 is connected with the opening/closing cover 6 by means of the connecting rod 10, and the outer end of the sliding block 11 is positioned in a swing drive slot 14 which is arranged at the inner end of the swing link 9.
The foundation seat 8 is internally provided with a linear guideway 15 which is in parallel with the threaded rod 12, and the inner end of the sliding block 11 is slidably mounted on the linear guideway 15.
A spindle of the motor 13 is coaxially connected with the threaded rod 12, the spindle is provided with a limit wheel 16 positioned in a limit slot 17 arranged on the foundation seat 8.
Fig. 4 is a diagram showing the internal structure of the retractable device when the hatch is closed.
DESCRIPTION OF THE EMBODIMENTS
In the casing opening/closing system of an unmanned helicopter, as shown in Figs. 1-4, the unmanned helicopter includes a casing 1, an engine 2, a rotor wing 3 and a tail pipe 4; one end of the engine 2 and one end of the tail pipe 4 are mounted in the casing 1.
The casing opening/closing system includes: a hatch 5 arranged on the upper part of the casing 1, an opening/closing cover 6 arranged on the hatch 5 and a retractable device 7.
The opening/closing cover 6 is articulated with the casing 1 by means of a hinge. Two opening/closing covers 6 are provided and respectively mounted at both sides of the hatch 5 so that the two opening/closing covers 6 are arranged in a split way.
The retractable device 7 is mounted in the casing 1 for controlling the opening/closing cover 6 to open or close the hatch 5.
The retractable device 7 includes a foundation seat 8, a swing link 9, a connecting rod 10, a sliding block 11, a threaded rod 12 and a motor 13; the threaded rod 12 is rotatably mounted in the foundation seat 8, the sliding block 11 is mounted on the threaded rod 12 through the threaded connection, a lead-screw mechanism consists of the sliding block 11 and the threaded rod 12, the motor 13 is mounted in the foundation seat 8 for driving the threaded rod 12 to rotate, the inner end of the swing link 9 is articulated inside the foundation seat 8, the outer end of the swing link 9 is connected with the opening/closing cover 6 by means of the connecting rod 10, and the outer end of the sliding block 11 is positioned in a swing drive slot 14 which is arranged at the inner end of the swing link 9.
The foundation seat 8 is internally provided with a linear guideway 15 which is in parallel with the threaded rod 12, and the inner end of the sliding block 11 is slidably mounted on the linear guideway 15.
A spindle of the motor 13 is coaxially connected with the threaded rod 12, the spindle is provided with a limit wheel 16 positioned in a limit slot 17 arranged on the foundation seat 8.
4 The casing 1 is internally provided with a spoiler 18 which is arranged slantwise.
When the hatch 5 is in the closed state, as shown in Fig. 4, the swing link 9 of the retractable device 7 is perpendicular to the foundation seat 8. When the hatch 5 is to be opened, the motor 13 drives the threaded rod 12 to rotate, the rotating threaded rod 12 drives the sliding block 11 to slide downward, the sliding block 11 which is sliding pushes the side wall at the lower side of the swing drive slot 14 so that the outer end of the swing link 9 swings upward and the swing link 9 drives the opening/closing cover 6 by means of the connecting rod 10 to open the hatch 5.
After the hatch 5 is opened, airflow generated by the rotor wing 3 enters into the casing 1.
Airflow flowing from the hatch 5 into the casing 1 through the spoiler 18 which is higher at the back and lower at the front is led to the engine at the front side of the hatch 5 so that airflow touches the engine 2 as much as possible to remove heat and finally flows out of a plurality of ports at the lower side of the casing 1.
When the hatch 5 is completely opened, the retractable device 7 is in the state as shown in Fig.
3, and the swing link 9 of the retractable device 7 moves to a parallel state relative to the foundation seat 8. When the hatch 5 is to be closed, the motor 13 is adjusted to contrarotate to drive the sliding block 11 to slide upward, the sliding block 11 pushes the side wall at the upper side of the swing drive slot 14 so that the outer end of the swing link 9 swings downward and the swing link 9 drives the opening/closing cover 6 by means of the connecting rod 10 to close the hatch 5.
When the hatch 5 is in the closed state, as shown in Fig. 4, the swing link 9 of the retractable device 7 is perpendicular to the foundation seat 8. When the hatch 5 is to be opened, the motor 13 drives the threaded rod 12 to rotate, the rotating threaded rod 12 drives the sliding block 11 to slide downward, the sliding block 11 which is sliding pushes the side wall at the lower side of the swing drive slot 14 so that the outer end of the swing link 9 swings upward and the swing link 9 drives the opening/closing cover 6 by means of the connecting rod 10 to open the hatch 5.
After the hatch 5 is opened, airflow generated by the rotor wing 3 enters into the casing 1.
Airflow flowing from the hatch 5 into the casing 1 through the spoiler 18 which is higher at the back and lower at the front is led to the engine at the front side of the hatch 5 so that airflow touches the engine 2 as much as possible to remove heat and finally flows out of a plurality of ports at the lower side of the casing 1.
When the hatch 5 is completely opened, the retractable device 7 is in the state as shown in Fig.
3, and the swing link 9 of the retractable device 7 moves to a parallel state relative to the foundation seat 8. When the hatch 5 is to be closed, the motor 13 is adjusted to contrarotate to drive the sliding block 11 to slide upward, the sliding block 11 pushes the side wall at the upper side of the swing drive slot 14 so that the outer end of the swing link 9 swings downward and the swing link 9 drives the opening/closing cover 6 by means of the connecting rod 10 to close the hatch 5.
Claims (6)
1. A casing opening/closing system of an unmanned helicopter, the unmanned helicopter comprises a casing, a motor, a rotor wing and a tail pipe; one end of the motor and one end of the tail pipe are mounted in the casing; wherein, the casing opening/closing system comprises:
a hatch arranged on the upper part of the casing, an opening/closing cover arranged on the hatch and a retractable device; the opening/closing cover is articulated with the casing by means of a hinge, the retractable device is mounted in the casing and is connected with the opening/closing cover for controlling the opening/closing cover to open and close the hatch.
a hatch arranged on the upper part of the casing, an opening/closing cover arranged on the hatch and a retractable device; the opening/closing cover is articulated with the casing by means of a hinge, the retractable device is mounted in the casing and is connected with the opening/closing cover for controlling the opening/closing cover to open and close the hatch.
2. The casing opening/closing system of an unmanned helicopter according to claim 1, wherein the retractable device comprises a foundation seat, a swing link, a connecting rod, a sliding block, a threaded rod and a motor; the threaded rod is rotatably mounted in the foundation seat, the sliding block is mounted on the threaded rod through the threaded connection, the motor is mounted in the foundation seat for driving the threaded rod to rotate, the inner end of the swing link is articulated inside the foundation seat, the outer end of the swing link is connected with the opening/closing cover by means of the connecting rod-, and the outer end of the sliding block is positioned in a swing drive slot which is arranged at the inner end of the swing link.
3. The casing opening/closing system of an unmanned helicopter according to claim 2, wherein the foundation seat is internally provided with a linear guideway which is in parallel with the threaded rod, and the inner end of the sliding block is slidably mounted on the linear guideway.
4. The casing opening/closing system of an unmanned helicopter according to claim 2, wherein a spindle of the motor is coaxially connected with the threaded rod, the spindle is provided with a limit wheel positioned in a limit slot arranged on the foundation seat.
5. The casing opening/closing system of an unmanned helicopter according to claim 1, wherein two opening/closing covers are provided and respectively mounted at both sides of the hatch.
6. The casing opening/closing system of an unmanned helicopter according to claim 1, wherein the casing is internally provided with a spoiler which is arranged slantwise.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410315372.3A CN104058087B (en) | 2014-07-03 | 2014-07-03 | The casing open-close system of depopulated helicopter |
| CN2014103153723 | 2014-07-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2893341A1 true CA2893341A1 (en) | 2015-12-11 |
| CA2893341C CA2893341C (en) | 2016-11-22 |
Family
ID=51546086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2893341A Active CA2893341C (en) | 2014-07-03 | 2015-06-02 | Casing opening/closing system of an unmanned helicopter |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104058087B (en) |
| CA (1) | CA2893341C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3656676A1 (en) * | 2018-11-22 | 2020-05-27 | Airbus Operations | Aircraft nacelle comprising a cover with two hinged flaps |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016000484A1 (en) * | 2014-07-03 | 2016-01-07 | 天津曙光敬业科技有限公司 | Fuselage opening and closing system of unmanned helicopter |
| US10800539B2 (en) * | 2016-08-19 | 2020-10-13 | General Electric Company | Propulsion engine for an aircraft |
| KR101806261B1 (en) * | 2016-10-17 | 2017-12-07 | 하이리움산업(주) | Multi-Copter Having Fuel Tank Installation Part |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201249642Y (en) * | 2008-08-14 | 2009-06-03 | 冯计成 | Air-ground helicopter |
| EP2718180B1 (en) * | 2011-06-07 | 2018-02-28 | Composite Helicopters International Holdings Limited | A helicopter |
| FR2990189B1 (en) * | 2012-05-02 | 2015-01-02 | Airbus Operations Sas | PRESSURE DOOR FOR AIRCRAFT. |
| CN203593159U (en) * | 2013-09-29 | 2014-05-14 | 国网山西省电力公司太原供电公司 | Multi-purpose unmanned aerial vehicle |
| CN203958602U (en) * | 2014-07-03 | 2014-11-26 | 天津曙光敬业科技有限公司 | The casing open-close system of depopulated helicopter |
-
2014
- 2014-07-03 CN CN201410315372.3A patent/CN104058087B/en active Active
-
2015
- 2015-06-02 CA CA2893341A patent/CA2893341C/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3656676A1 (en) * | 2018-11-22 | 2020-05-27 | Airbus Operations | Aircraft nacelle comprising a cover with two hinged flaps |
| FR3088906A1 (en) * | 2018-11-22 | 2020-05-29 | Airbus Operations | Aircraft nacelle comprising a hood with two hinged leaves |
| US11319083B2 (en) | 2018-11-22 | 2022-05-03 | Airbus Operations Sas | Aircraft nacelle comprising a cowl with two articulated doors |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104058087A (en) | 2014-09-24 |
| CN104058087B (en) | 2016-07-06 |
| CA2893341C (en) | 2016-11-22 |
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