CN114872905A - Air door driving mechanism - Google Patents

Air door driving mechanism Download PDF

Info

Publication number
CN114872905A
CN114872905A CN202210543515.0A CN202210543515A CN114872905A CN 114872905 A CN114872905 A CN 114872905A CN 202210543515 A CN202210543515 A CN 202210543515A CN 114872905 A CN114872905 A CN 114872905A
Authority
CN
China
Prior art keywords
rotating shaft
air door
actuator
bush
section
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210543515.0A
Other languages
Chinese (zh)
Inventor
牛福春
刘旭
周莫普
刘杰
赵艳秦
马爽
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AVIC Sac Commercial Aircraft Co Ltd
Original Assignee
AVIC Sac Commercial Aircraft Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by AVIC Sac Commercial Aircraft Co Ltd filed Critical AVIC Sac Commercial Aircraft Co Ltd
Priority to CN202210543515.0A priority Critical patent/CN114872905A/en
Publication of CN114872905A publication Critical patent/CN114872905A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D33/00—Arrangements in aircraft of power plant parts or auxiliaries not otherwise provided for
    • B64D33/02—Arrangements in aircraft of power plant parts or auxiliaries not otherwise provided for of combustion air intakes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D13/00—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space, or structural parts of the aircraft
    • B64D13/06—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space, or structural parts of the aircraft the air being conditioned
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D13/00—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space, or structural parts of the aircraft
    • B64D13/06—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space, or structural parts of the aircraft the air being conditioned
    • B64D2013/0603—Environmental Control Systems
    • B64D2013/0611—Environmental Control Systems combined with auxiliary power units (APU's)
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D33/00—Arrangements in aircraft of power plant parts or auxiliaries not otherwise provided for
    • B64D33/02—Arrangements in aircraft of power plant parts or auxiliaries not otherwise provided for of combustion air intakes
    • B64D2033/0213—Arrangements in aircraft of power plant parts or auxiliaries not otherwise provided for of combustion air intakes specially adapted for auxiliary power units (APU's)
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00—Aeronautics or air transport
    • Y02T50/40—Weight reduction

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • Power-Operated Mechanisms For Wings (AREA)

Abstract

The invention belongs to the field of structural design of civil airliners, and relates to an air door driving mechanism. The invention can reduce the risk of air door clamping stagnation, prolong the structural life, realize the over-opening of the windproof door, ensure that the air door can be kept in an open or closed state when the actuator does not work, and the windproof door is opened or closed accidentally, and integrate the installation structure of the air door position detection equipment. The invention can reduce the manufacturing and installation difficulty, reduce the risk of air door clamping stagnation and prolong the service life of the structure. The air door can be prevented from being opened too much, and the protection of the air door and the wall plate and other structures near the opening of the air door can be realized. The invention can realize that the air door can be kept in an open or closed state when the actuator does not work, and is not only suitable for the field of structural design of civil passenger planes, but also suitable for similar air door structures in other mechanical design fields.

Description

Air door driving mechanism
Technical Field
The invention belongs to the field of structural design of civil airliners, and relates to an air door driving mechanism.
Background
In the field of civil passenger plane structural design, a driving mechanism needs to be designed for an APU air inlet door, an environmental control system air outlet door and the like, the actuator actuating rod is driven to rotate by means of extension and shortening, one side of a driving joint is generally adopted at two supporting points of the actuator, namely one side of the end of the actuator actuating rod adopts a joint bearing, one side of a support joint of the actuator does not adopt a fixing form of the joint bearing, the rotation axis of the actuator is required to be parallel to that of the air door, the requirements on manufacturing and mounting precision of the support seat of the actuator, the driving joint, the support structure of the rotation axis of the air door and the like are high, and the air door is easy to block; in the rotation process of the air door, a dry friction phenomenon exists between the actuator and the rotating shaft at the actuator support. When the actuator fails, the air door is opened too much, and the air door and a wall plate near the opening of the air door are damaged. When the air door is checked and maintained, the air door is required to be maintained in an open or closed state, so that the operation of operators is facilitated, and the safety of the operators is protected. In the service process of the airplane, a pilot needs to conveniently confirm whether the air door is in an open state or a closed state.
Disclosure of Invention
The invention aims to solve the technical problem of providing an air door driving mechanism which can reduce the manufacturing and installation difficulty, reduce the clamping risk of an air door, prolong the service life of the structure, realize the over-opening of a windproof door, ensure that the air door can be kept in an open or closed state when an actuator does not work, and integrate an air door position detection device installation structure.
The specific technical scheme of the invention is as follows:
the utility model provides an air door actuating mechanism, includes actuator, actuator support, drive crank, rotation axis left side section, rotation axis middle section, rotation axis right side section, left side rotation axis supporting beam, right side rotation axis supporting beam, air door, left side gooseneck support and right side gooseneck support.
The actuator is supported on the actuator support and the driving crank. The rotating shaft left section, the rotating shaft middle section and the rotating shaft right section are coaxial, the rotating shaft left section is supported on the left rotating shaft supporting beam, the rotating shaft right section is supported on the right rotating shaft supporting beam, and the rotating shaft middle section is installed between the rotating shaft left section and the rotating shaft right section. The air door is fixedly connected with a left side gooseneck support and a right side gooseneck support, the left side gooseneck support is arranged between the flange structures at the left section and the middle section of the rotating shaft, and the right side gooseneck support is arranged between the flange structures at the middle section and the right section of the rotating shaft. Through left side gooseneck support and rotation axis left section, the connection in rotation axis middle section and right side gooseneck support and rotation axis middle section, the connection of rotation axis right side section, the realization is with rotation axis left section simultaneously, the rotation axis middle section, rotation axis right side section links firmly the rotation axis and the air door that are the air door rather than the fixed of rotation axis, adopt the spline hookup between drive crank and the rotation axis left section, actuator drive crank, drive crank drives the rotation axis, rotation axis drive air door, finally realize the drive of actuator to the air door.
The actuator all installs joint bearing in two strong points department, the connection of actuator and actuator support adopts supporting standard component and the slip bush of constituteing by bolt, countersunk washer, plain washer, nut, split pin 16 to realize.
The actuator support is in a double-lug structure at the joint with the actuator, one lug is provided with a flange bushing A, the other lug is provided with a flange bushing B, and the flange of the flange bushing A is positioned between the two lugs of the actuator support. The sliding bush is installed in the flange bush B, the bolt sequentially penetrates through the countersunk washer, the flange bush A, the upper joint bearing of the actuator, the sliding bush, the flat washer and the nut, and the actuator is pressed on the end face of the flange bush A to realize limiting along the direction of the rotation axis of the air door through the upper joint bearing of the actuator. A cylindrical protruding structure is designed on the actuator, and a nylon check ring is installed on the outer side of the flange bushing A. There is the design clearance between cylindricality protruding structure and the nylon retaining ring, guarantees that the nylon retaining ring can not prevent the actuator swing along air door rotation axis direction under the prerequisite of limit function. The connection of the actuator and the driving crank is similar to the connection form of the actuator and the actuator support, and the difference is that no cylindrical convex structure and no nylon retainer ring are arranged. The knuckle bearings at the two supporting points of the actuator are self-lubricating bearings, the self-lubricating knuckle bearings are also mounted at the two supporting points of the air door rotating shaft, and the inner rings of the self-lubricating knuckle bearings rotate relative to the outer ring at the two supporting points of the actuator and the two supporting points of the air door rotating shaft in the rotating process of the air door, so that the dry friction phenomenon of the air door in the rotating process is avoided; the inner ring and the outer ring of the joint bearing can rotate in a universal direction relatively, so that the manufacturing and mounting precision is reduced, and the risk of clamping stagnation of the air door is reduced.
The driving crank on the design have boss structure A, the design has boss structure B on the rotation axis supporting beam of left side, make boss structure A and boss structure B laminating realize preventing that the air door from crossing to open other structures of damage when opening certain angle through the air door.
A boss structure B of the driving crank is provided with a hole, and a bushing A is arranged in the hole; two holes are designed on the left rotating shaft supporting beam, and a bushing B and a bushing C are respectively arranged in the two holes; when the air door is in a closed state, the inner holes of the bush A and the bush B are coaxial, and the air door can be prevented from being opened accidentally by inserting a positioning pin into the inner holes of the bush A and the bush B; when the air door is in an open state, the inner holes of the bush A and the bush C are coaxial, and the air door can be prevented from being accidentally closed by inserting the positioning pins into the inner holes of the bush A and the bush C.
Air door position detection equipment is installed on a right side rotation axis supporting beam at the right end of the right section of the rotation axis, and an air door position probe on the air door position detection equipment is of an external spline structure and is matched with an internal spline structure at the axis of the right section of the rotation axis.
The invention has the following beneficial effects:
1) the manufacturing and installation difficulty can be reduced, the clamping risk of the air door is reduced, and the service life of the structure is prolonged.
2) The air door can be prevented from being opened too much, and the protection of the air door and the wall plate and other structures near the opening of the air door can be realized.
3) It is achieved that the damper can be kept in an open or closed state also when the actuator is not in operation.
4) In the maintenance process, the air door can be prevented from being opened or closed accidentally.
5) An integrated damper position detection device mounting structure.
6) The structure is simple and compact, and the process is mature.
7) The application range is wide. The structure is not only suitable for the field of structural design of civil airliners, but also suitable for similar air door structures in other mechanical design fields.
Drawings
FIG. 1 is a front view of the overall scheme of the present invention;
FIG. 2 is a left side view (rotated 90) of the general arrangement of the present invention;
FIG. 3 is a detail view of the actuator of FIG. 1 at the connection A to the actuator support of the present invention;
FIG. 4 is a cross-sectional view B-B of the actuator and actuator support junction of FIG. 3 in accordance with the present invention;
FIG. 5 is a schematic view of the wind door over-opening of the present invention (damper closed state);
FIG. 6 is a schematic view of the accidental opening/closing of the wind-break door according to the present invention (the closed state of the damper);
FIG. 7 is a cross-sectional view C-C of the installation of the damper detection device of FIG. 1 in accordance with the present invention.
In the figure: 1, an actuator; 2, an actuator support; 3 driving the crank; 4, rotating the left section of the shaft; 5, a middle section of a rotating shaft; 6, rotating the right section of the shaft; 7 left side rotation axis support beam; 8 right side rotation axis support beam; 9 air doors; 10 left gooseneck support; 11 a right gooseneck support; 12, bolts; 13 a countersunk washer; 14 a flat washer; 15 a nut; 16 cotter pins; 17 a sliding bush; 18 flange bushing a; 19 flange bushing B; 20 column-shaped convex structures; 21 a nylon retainer ring; 22 boss structure A; 23, a boss structure B; 24, a bushing A; 25, a bushing B; 26 a bushing C; 27 a damper position detecting device; 28 damper position probe.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1 and 2, a damper drive mechanism includes an actuating structure, an actuator support structure, a wind-break door over-opening structure, and a wind-break door accidental opening/closing structure;
the actuating structure include actuator 1, actuator support 2, drive crank 3, rotation axis left side section 4, rotation axis middle section 5, rotation axis right side section 6, left side rotation axis supporting beam 7, right side rotation axis supporting beam 8, air door 9, left side gooseneck support 10 and right side gooseneck support 11.
The actuator 1 is supported on an actuator support 2 and a drive crank 3. Rotation axis left side section 4, rotation axis middle section 5, rotation axis right side section 6 are coaxial, and rotation axis left side section 4 supports on left side rotation axis supporting beam 7, and rotation axis right side section 6 supports on right side rotation axis supporting beam 8, and rotation axis middle section 5 is installed in the middle of rotation axis left side section 4, the rotation axis right side section 6. The air door 9 is fixedly connected with a left side gooseneck support 10 and a right side gooseneck support 11, the left side gooseneck support 10 is arranged between the flange structures of the left section 4 and the middle section 5 of the rotating shaft, and the right side gooseneck support 11 is arranged between the flange structures of the middle section 5 and the right section 6 of the rotating shaft. Through left side gooseneck support 10 and rotation axis left section 4, the connection of rotation axis middle section 5 and right side gooseneck support 11 and rotation axis middle section 5, the connection of rotation axis right side section 6, the realization is with rotation axis left side section 4 simultaneously, rotation axis middle section 5, rotation axis right side section 6 links firmly the rotation axis and the air door 9 that are air door 9 rather than the rotation axis link firmly, adopt the spline hookup between drive crank 3 and the rotation axis left side section 4, actuator 1 drive crank 3, drive crank 3 drives the rotation axis, rotation axis drive air door 9, finally realize actuator 1 to the drive of air door 9.
As shown in fig. 3 and 4, the actuator support structure includes: the actuator 1 is provided with joint bearings at two supporting points, and the connection between the actuator 1 and the actuator support 2 is realized by adopting a matched standard component consisting of a bolt 12, a countersunk washer 13, a flat washer 14, a nut 15 and a cotter pin 16 and a sliding bush 17.
The actuator support 2 is of a double-lug structure at the joint with the actuator 1, a flange bush A18 is installed on one lug, a flange bush B19 is installed on the other lug, and the flange of the flange bush A18 is located between the two lugs of the actuator support 2. The sliding bush 17 is installed in the flange bush B19, the bolt 12 passes through the countersunk washer 13, the flange bush a18, the upper knuckle bearing of the actuator 1, the sliding bush 17, the flat washer 14 and the nut 15 in sequence, and the actuator 1 is limited in the direction of the rotation axis of the damper 9 by pressing the upper knuckle bearing of the actuator 1 against the end face of the flange bush a 18. The actuator 1 is designed with a cylindrical convex structure 20, and a nylon retainer ring 21 is arranged on the outer side of the flange bushing A18. There is the design clearance between cylindricality protruding structure 20 and the nylon retaining ring 21, guarantees that nylon retaining ring 21 can not play limit function to actuator 1 along air door 9 rotation axis direction under the prerequisite, prevents actuator 1 swing. The connection between the actuator 1 and the driving crank 3 is similar to the connection between the actuator 1 and the actuator support 2, except that no cylindrical raised structure and no nylon retainer ring are provided. The knuckle bearings at the two supporting points of the actuator 1 are self-lubricating bearings, the self-lubricating knuckle bearings are also mounted at the two supporting points of the rotating shaft of the air door 9, and the inner rings of the self-lubricating knuckle bearings rotate relative to the outer ring at the two supporting points of the actuator 1 and the two supporting points of the rotating shaft of the air door 9 in the rotating process of the air door 9, so that the dry friction phenomenon of the air door in the rotating process is avoided; the inner ring and the outer ring of the joint bearing can rotate in a universal direction relatively, so that the manufacturing and mounting precision is reduced, and the risk of clamping stagnation of the air door is reduced.
As shown in fig. 5, the structure for preventing the wind door from being opened excessively is as follows: the design has boss structure A22 on the drive crank 3, and the design has boss structure B23 on the left side rotation axis supporting beam 7, makes boss structure A22 and the laminating of boss structure B23 realize preventing that air door 9 from crossing to open other structures of damage when opening certain angle through air door 9.
As shown in fig. 6, the accidental opening/closing structure of the windproof door is: the boss structure B23 of the driving crank 3 is provided with a hole, and a bush A24 is arranged in the hole; two holes are designed on the left rotating shaft support beam 7, and a bushing B25 and a bushing C26 are respectively arranged in the two holes; when the air door 9 is in a closed state, the inner holes of the bush A24 and the bush B25 are coaxial, and the air door 9 can be prevented from being opened accidentally by inserting a positioning pin into the inner holes of the bush A24 and the bush B25; when the damper 9 is in an open state, the inner holes of the bush A24 and the bush C26 are coaxial, and the damper 9 can be prevented from being accidentally closed by inserting a positioning pin into the inner holes of the bush A24 and the bush C26.
As shown in fig. 6, the damper position detecting device mounting structure is: the air door position detection device 27 is installed on the right rotating shaft supporting beam 8 at the right end of the rotating shaft right section 6, and an air door position probe 28 on the air door position detection device 27 is in an external spline structure and is matched with an internal spline structure at the axis of the rotating shaft right section 6.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims (8)

1. The air door driving mechanism is characterized by comprising an actuator (1), an actuator support (2), a driving crank (3), a rotating shaft left section (4), a rotating shaft middle section (5), a rotating shaft right section (6), a left rotating shaft supporting beam (7), a right rotating shaft supporting beam (8), an air door (9), a left gooseneck support (10) and a right gooseneck support (11);
the actuator (1) is supported on the actuator support (2) and the driving crank (3); the rotating shaft left section (4), the rotating shaft middle section (5) and the rotating shaft right section (6) are coaxial, the rotating shaft left section (4) is supported on a left rotating shaft supporting beam (7), the rotating shaft right section (6) is supported on a right rotating shaft supporting beam (8), and the rotating shaft middle section (5) is installed between the rotating shaft left section (4) and the rotating shaft right section (6); a left gooseneck support (10) and a right gooseneck support (11) are fixedly connected to the air door (9), the left gooseneck support (10) is arranged between the flange structures of the rotating shaft left section (4) and the rotating shaft middle section (5), and the right gooseneck support (11) is arranged between the flange structures of the rotating shaft middle section (5) and the rotating shaft right section (6); through the connection of a left side gooseneck support (10) and a left section (4) of a rotating shaft and a middle section (5) of the rotating shaft and the connection of a right side gooseneck support (11) and the middle section (5) of the rotating shaft and a right section (6) of the rotating shaft, the left section (4) of the rotating shaft, the middle section (5) of the rotating shaft and the right section (6) of the rotating shaft are fixedly connected into the rotating shaft of an air door (9) and the fixed connection of the air door (9) and the rotating shaft, the driving crank (3) and the left section (4) of the rotating shaft are connected through splines, the actuator (1) drives the driving crank (3), the driving crank (3) drives the rotating shaft, the rotating shaft drives the air door (9), and finally the actuator (1) drives the air door (9);
the actuator (1) is provided with joint bearings at two supporting points, and the connection between the actuator (1) and the actuator support (2) is realized by a matched standard component and a sliding bush (17), wherein the matched standard component consists of a bolt (12), a countersunk washer (13), a flat washer (14), a nut (15) and a cotter pin (16);
the actuator support (2) is of a double-lug structure at the joint with the actuator (1), one lug is provided with a flange bushing A (18), the other lug is provided with a flange bushing B (19), and the flange of the flange bushing A (18) is positioned between the two lugs of the actuator support (2); the sliding bush (17) is installed in a flange bush B (19), a bolt (12) sequentially penetrates through a countersunk washer (13), a flange bush A (18), an upper knuckle bearing of the actuator (1), the sliding bush (17), a flat washer (14) and a nut (15), and the actuator (1) is limited by pressing the upper knuckle bearing of the actuator (1) on the end face of the flange bush A (18) along the rotation axis direction of the air door (9); a cylindrical convex structure (20) is designed on the actuator (1), and a nylon check ring (21) is arranged on the outer side of the flange bushing A (18); a designed gap is reserved between the cylindrical convex structure (20) and the nylon check ring (21), and the actuator (1) is prevented from swinging on the premise that the nylon check ring (21) cannot limit the actuator (1) along the rotation axis direction of the air door (9); the connection of the actuator (1) and the driving crank (3) is similar to the connection of the actuator (1) and the actuator support (2), and the difference is that no cylindrical convex structure and no nylon retainer ring are arranged; the knuckle bearings at the two supporting points of the actuator (1) are self-lubricating bearings, and the self-lubricating knuckle bearings are also installed at the two supporting points of the rotating shaft of the air door (9).
2. The damper driving mechanism according to claim 1, wherein the driving crank (3) is provided with a boss structure a (22), the left rotating shaft supporting beam (7) is provided with a boss structure B (23), and the boss structure a (22) and the boss structure B (23) are attached to each other when the damper (9) is opened to a certain angle, so that the damper (9) is prevented from being opened too much and damaging other structures.
3. A damper drive according to claim 1 or 2, characterised in that the boss formation B (23) of the drive crank (3) is provided with a bore in which the bush a (24) is mounted.
4. A damper drive mechanism according to claim 1 or 2, wherein said left rotary shaft support beam (7) is formed with two holes, and a bush B (25) and a bush C (26) are respectively fitted in the two holes; when the air door (9) is in a closed state, the inner holes of the bush A (24) and the bush B (25) are coaxial, and the air door (9) can be prevented from being opened accidentally by inserting a positioning pin into the inner holes of the bush A (24) and the bush B (25); when the air door (9) is in an open state, the inner holes of the bush A (24) and the bush C (26) are coaxial, and the air door (9) can be prevented from being accidentally closed by inserting a positioning pin into the inner holes of the bush A (24) and the bush C (26).
5. A damper drive mechanism according to claim 3, wherein said left rotary shaft support beam (7) is formed with two holes, and a bush B (25) and a bush C (26) are fitted in the two holes, respectively; when the air door (9) is in a closed state, the inner holes of the bush A (24) and the bush B (25) are coaxial, and the air door (9) can be prevented from being opened accidentally by inserting a positioning pin into the inner holes of the bush A (24) and the bush B (25); when the air door (9) is in an open state, the inner holes of the bush A (24) and the bush C (26) are coaxial, and the air door (9) can be prevented from being accidentally closed by inserting a positioning pin into the inner holes of the bush A (24) and the bush C (26).
6. A damper drive mechanism according to claim 1, 2 or 5, further comprising a damper position detecting device (27), wherein the damper position detecting device (27) is mounted on the right rotary shaft support beam (8) at the right end of the rotary shaft right section (6), and a damper position probe (28) on the damper position detecting device (27) is of an external spline structure and is fitted with an internal spline structure at the axis of the rotary shaft right section (6).
7. A damper drive mechanism according to claim 3, further comprising a damper position detecting device (27), wherein the damper position detecting device (27) is mounted on the right rotary shaft support beam (8) at the right end of the right rotary shaft section (6), and the damper position probe (28) of the damper position detecting device (27) has an external spline structure and is fitted with an internal spline structure at the axis of the right rotary shaft section (6).
8. A damper drive mechanism according to claim 4, further comprising a damper position detecting device (27), wherein the damper position detecting device (27) is mounted on the right rotary shaft support beam (8) at the right end of the right rotary shaft section (6), and the damper position probe (28) of the damper position detecting device (27) is of an external spline structure and is fitted with an internal spline structure at the axis of the right rotary shaft section (6).
CN202210543515.0A 2022-05-18 2022-05-18 Air door driving mechanism Pending CN114872905A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210543515.0A CN114872905A (en) 2022-05-18 2022-05-18 Air door driving mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210543515.0A CN114872905A (en) 2022-05-18 2022-05-18 Air door driving mechanism

Publications (1)

Publication Number Publication Date
CN114872905A true CN114872905A (en) 2022-08-09

Family

ID=82675621

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210543515.0A Pending CN114872905A (en) 2022-05-18 2022-05-18 Air door driving mechanism

Country Status (1)

Country Link
CN (1) CN114872905A (en)

Similar Documents

Publication Publication Date Title
EP2352670B1 (en) Landing gear bay door with roller slot mechanism
JP2022532956A (en) Single door concrete structure for high speed rail and subway tunnels Fire protection sealed door
CN104527972A (en) Unmanned plane undercarriage cabin door retraction-extension servo mechanism
CN109441263B (en) Locking device applied to urban underground comprehensive pipe gallery access port protection equipment
CN105398568B (en) A kind of undercarriage locking mechanism
CN114872905A (en) Air door driving mechanism
WO2019215466A1 (en) A separate yaw-system for wind turbines
CN111425255A (en) Fireproof protective airtight door with single-leaf concrete structure for high-speed railway and subway tunnel
WO2006081664A1 (en) Alternative uplock release assembly
CN215255408U (en) Automatic locking mechanism for special vehicle door and window
CN111059140B (en) Clamping stagnation prevention hinge structure
CN111102307A (en) Linear brake device for photovoltaic tracking support
CN201165815Y (en) Automobile door hinge with novel mounting structure
CN115402506A (en) Large unmanned aerial vehicle wing flap actuator and mounting structure thereof
CN113153037B (en) Automatic locking mechanism for special vehicle door and window
CA2610490C (en) Alternative uplock release assembly
CN206220899U (en) Azimuth angle adjusting mechanism for gas drilling manifold
CN112550681A (en) Undercarriage locking arm connection structure
CN111853332A (en) Axial direction movement adjustable disc valve hydraulic control device
CN220581804U (en) Pneumatic valve
CN215292041U (en) Cabin door power-assisted opening and closing device
CN215589010U (en) Hinge shaft disassembling tool
CN221298891U (en) High-temperature-resistant heavy door hinge
CN216618282U (en) Bearing with dustproof and anti-pollution functions
CN220759185U (en) Pneumatic door opening and closing device

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination