CN108248816A - Airstair with gear fitted economic unlocking structure - Google Patents

Abstract

The invention discloses a kind of airstairs with gear fitted economic unlocking structure, including fixed part and folding part, drive component are provided on fixed part, drive component includes the ball-screw and driver that are electrically connected.Folding part includes folded frame, translational frame, connection tablet, first connecting rod system, pedal and hush panel.Airstair further includes manual unlocking structure, and manual unlocking structure includes rack, gear, control piece, handle, gag lever post.Control piece moves with fixed part to engage and detach, and hush panel is made to be fixed on fixed part and detach from fixed part by rack drives gag lever post.In this case, if the airstair with gear fitted economic unlocking structure powers off when expansion is needed, it can be with artificial operating handle, swing handle, band moving gear rotates, and then is moved with carry-over bar, changes the position of gag lever post, so as to fulfill folding part is opened, ensure the airstair normal use with gear fitted economic unlocking structure.

Description

Airstairs with gear-coordinated economic unlocking structure

technical field

The invention relates to the field of helicopter airstairs, in particular to an airstair with a gear-matched economical unlocking structure.

Background technique

In the related technology, the boarding ladder of the aircraft is a boarding ladder on the ground, which cannot be folded, and it is difficult to carry it randomly, which increases the demand of the aircraft for the supporting boarding ladder of the airport. Although some airstairs can realize the function of folding, in the event of a power failure, the pedals for sealing cannot be opened urgently, which affects the normal use of the airstairs.

Contents of the invention

A boarding ladder with a gear-coordinated economical unlocking structure provided by an embodiment of the present invention includes a fixed part and a folding part, the folding part is movably stored in the fixed part, and a driving device is provided on the fixed part. assembly, the drive assembly includes an electrically connected ball screw and drive,

The folding part includes a folding frame, a translation frame, a connecting plate, a first linkage system, a pedal and a sealing plate, the connecting plate is connected to the translation frame, the translation frame is connected to the folding frame, and the pedal is rotated to set on the folding frame, the first linkage system connects the folding frame and the translation frame,

The driver drives the ball screw to rotate to drive the translation frame to move along the axis of the ball screw and drive the folding frame to open and contract through the first linkage system,

The boarding ladder with a gear-fitted economical unlocking structure also includes a manual unlocking structure, the manual unlocking structure is arranged on the sealing plate, and the manual unlocking structure includes a rack, a gear, a control member, a handle, a limit rod, the rack is connected to the control member and the limit rod, the rack is meshed with the gear, the handle is connected to the gear,

The control member drives the limit rod to move through the rack to engage with and separate from the fixing part, and to fix the sealing plate on the fixing part and to separate from the fixing part.

In the embodiment of the present invention, if the boarding ladder with gear-coordinated economical unlocking structure needs to be unfolded, if the power is cut off, the handle can be manually operated, and the handle can be turned to drive the gear to rotate, and then drive the rack to move, changing the position of the limit lever , so as to realize the opening of the folding part and ensure the normal use of the boarding ladder with gear-cooperated economical unlocking structure.

In some embodiments, the control part is connected with a movable part, the movable part is connected with the rack, and the control part controls the movement of the rack through the movable part.

In some embodiments, the sealing plate is also provided with a rack limit device, and the rack is provided with a positioning rod. When the rack moves to the limit position away from the control member, the The positioning rod contacts the rack limiting device to prevent the rack from continuing to move.

In some embodiments, the sealing plate is provided with a plurality of limiting tracks located on the same straight line, the limiting tracks are in the shape of a ring, and the limiting rod is located in the limiting tracks.

In some embodiments, the fixing part includes a bottom frame, a side frame and a fixing frame, the bottom frame, the side frame and the fixing frame cooperate to form a fixing part port, and the side frame is provided with a second a track, the folded part slides on the first track and enters and leaves the fixed part through the port of the fixed part; after the folded part is received in the fixed part, the sealing plate closes the port of the fixed part .

In some embodiments, the side frame includes a first section and a second section, the length of the first section in the vertical direction is greater than the length of the second section in the vertical direction,

A second track is opened on the first section,

The boarding ladder with a gear-matched economical unlocking structure further includes a third connecting rod, the third connecting rod connects the first track and the sealing plate,

The translation frame is slidably arranged on the second track.

In some embodiments, the first track includes a horizontal portion on the translational frame and an inclined portion on the folding frame, and the folding frame is provided with a pulley, and the pulley is slidably arranged on the first rail. on a track.

In some embodiments, the first linkage system includes a first rod and a second rod,

The first rod and the second rod are arranged on the folding frame, the first rod is hinged to the corresponding second rod, and the first rod is respectively connected to the corresponding translation frame.

In some embodiments, a positioning portion is provided on one end of the ball screw close to the folding portion, and the positioning portion forms a limiting protrusion,

A safety structure is provided on the folding frame, and the safety structure includes an operation part, a connecting piece and a fixing piece, the fixing piece is arranged on the connecting plate, the fixing piece forms a limiting groove, and the connecting piece The operating part is connected to the fixing part, and the operating part controls the connecting part to drive the fixing part to move in the vertical direction.

In some embodiments, the operating part includes a limiter and a rotating shaft, the limiter is connected to the connecting member through the rotating shaft, an arc-shaped track is provided on the folding frame, and an arc-shaped track is formed on the arc-shaped track. A plurality of positioning slots are provided, and the limiting member drives the connecting member to rotate around the rotating shaft to drive the fixing member to rise and fall.

Additional aspects and advantages of embodiments of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present invention will become apparent and comprehensible from the description of the embodiments in conjunction with the following drawings, wherein:

Fig. 1 is a three-dimensional structural schematic diagram of an airstair with a gear-cooperating economical unlocking structure according to an embodiment of the present invention;

Fig. 2 is another three-dimensional structural schematic diagram of the boarding ladder with gear-cooperated economical unlocking structure according to the embodiment of the present invention;

Fig. 3 is another three-dimensional structural schematic diagram of the boarding ladder with gear-cooperating economical unlocking structure according to the embodiment of the present invention;

Fig. 4 is a schematic diagram of a partial three-dimensional structure of an airstair with a gear-cooperating economical unlocking structure according to an embodiment of the present invention;

Fig. 5 is a schematic diagram of another partial three-dimensional structure of the boarding ladder with a gear-coordinated economical unlocking structure according to the embodiment of the present invention;

Fig. 6 is a schematic perspective view of the three-dimensional structure of the fixing part of the boarding ladder with a gear-coordinated economical unlocking structure according to the embodiment of the present invention;

Fig. 7 is a three-dimensional schematic diagram of the safety structure of the boarding ladder with a gear-coordinated economical unlocking structure according to the embodiment of the present invention;

Fig. 8 is a partially enlarged three-dimensional structural schematic diagram of the safety structure of the boarding ladder with the gear-cooperating economical unlocking structure according to the embodiment of the present invention.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation indicated by rear, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc. The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it should not be construed as limiting the invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of said features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected, or electrically connected, or can communicate with each other; it can be directly connected, or indirectly connected through an intermediary, and it can be the internal communication of two components or the interaction of two components relation. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

In the description of the present invention, unless otherwise clearly stated and limited, a first feature being "on" or "under" a second feature may include direct contact between the first and second features, and may also include the first and second features being in direct contact with each other. Two features are not in direct contact but through another feature between them. Moreover, "above", "above" and "above" the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. "Below", "beneath" and "under" the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, components and arrangements of specific examples are described below. Of course, they are only examples and are not intended to limit the invention. Furthermore, the present disclosure may repeat reference numerals and/or reference letters in different instances, such repetition is for simplicity and clarity and does not in itself indicate a relationship between the various embodiments and/or arrangements discussed. In addition, various specific process and material examples are provided herein, but one of ordinary skill in the art may recognize the use of other processes and/or the use of other materials.

Please refer to Fig. 1-Fig. 8, a boarding ladder 100 with a gear-coordinated economic unlocking structure provided by an embodiment of the present invention includes a fixed part 10 and a folding part 20, and the folding part 20 is movably stored in the fixed part 10 . A driving assembly 12 is disposed on the fixing part 10 , and the driving assembly 12 includes a ball screw 122 and a driver 124 electrically connected. The folding part 20 includes a folding frame 22, a translation frame 24, a connecting plate 26, a first linkage system 28 and a pedal 21, the connecting plate 26 is connected to the translation frame 24, the translation frame 24 is connected to the folding frame 22, and the pedal 21 is rotatably arranged on the folding frame 22 Above, the first link system 28 connects the folding frame 22 and the translation frame 24 . The driver 124 drives the ball screw 122 to rotate to drive the translation frame 24 to move along the axis of the ball screw 122 and drive the folding frame 22 to open and contract through the first link system 28 .

In this way, the drive assembly 12 drives the ball screw 122 to rotate, and the translation frame arranged on the ball screw and threaded with the ball screw moves along the axis of the ball screw, and then pulls the folding frame to realize the folding frame or Put down the folding frame.

In some embodiments, the folding part 20 further includes a sealing plate 23 , the sealing plate 23 is connected to the fixing part 10 through the second connecting rod 25 , and the sealing plate 23 is located under the folding frame 22 . The folding part 20 is folded and stored in the fixing part 10 , and the sealing plate 23 rotates and cooperates with the fixing part 10 to limit the displacement of the folding part 20 in the fixing part 10 .

In the embodiment of the present invention, the boarding ladder drives the ball screw to rotate through the driver to retract and retract the folded part, which greatly reduces the space occupied by the boarding ladder and is more convenient for the boarding ladder to be carried around. At the same time, the sealing plate and the fixing part are connected together and arranged under the folding frame, which prevents the sealing plate from affecting the normal use of the airstair when the airstair is in an open state. In addition, keeping the sealing plate away from the ground reduces the chance of wear and contamination, ensuring the experience of using the airstair.

In some embodiments, the fixed part 10 includes a bottom frame 14, a side frame 16 and a fixed frame 18, the bottom frame 14, the side frame 16 and the fixed frame 18 cooperate to form a fixed part port, and the side frame 16 is provided with a first track 162 , the folding part 20 slides on the first rail 162 and enters and exits the fixing part 10 through the fixing part port. After the folding part 20 is received in the fixing part 10 , the sealing plate 23 closes the fixing part port.

In this way, when the boarding ladder is not in use, the folding part is accommodated in the fixing part, and the sealing plate closes the port of the fixing part, preventing the folding part from being displaced in the fixing part, thereby improving the structural stability of the boarding ladder in the folded state It is also more convenient to handle and carry on the boarding ladder.

In some embodiments, the side frames 16 are vertically arranged on both sides of the bottom frame 14 , the bottom frame 14 is hollow, and the ball screw 122 is arranged in the hollow portion of the bottom frame 14 .

In this way, the hollow bottom frame structure not only achieves the purpose of material saving, reduces the materials required for manufacturing the boarding ladder, but also facilitates the rotation of the ball screw, avoiding the contact between the ball screw and the bottom frame during the rotation process, affecting the ball screw. The smooth rotation of the screw may even cause wear to the ball screw and affect the life of the ball screw.

In some embodiments, the side frame 16 includes a first section 164 and a second section 166 , the length of the first section 164 in the vertical direction is greater than the length of the second section 166 in the vertical direction. A second track 168 is defined on the first section 164 . The boarding ladder 100 with the gear-matched economic unlocking structure further includes a third connecting rod 27 , and the third connecting rod 27 connects the first track 162 and the sealing plate 23 . The translation frame 24 is slidably disposed on the second track 168 .

In this way, when the translation frame drives the folding frame to move, the second track and the pulley reduce the friction generated by the movement of the translation frame, improve the smoothness of the movement of the translation frame, and also improve the efficiency of retracting the folding part.

In some embodiments, the second rail 168 includes a horizontal plane portion 161 , a pulley is disposed at one end of the third connecting rod 27 , and the pulley is slidably connected to the plane portion 161 .

In some embodiments, the first rail 162 includes a horizontal portion on the translation frame 24 and an inclined portion on the folding frame 22 , the folding frame 22 is provided with pulleys, and the pulleys are slidably disposed on the first rail 162 .

In some embodiments, a circular hole is opened on the side frame 16 .

In this way, the hollow side frame structure not only achieves the purpose of saving materials and reduces the materials needed to manufacture the airstairs, but also makes it easier for the operator to observe the internal structure of the airstairs, detect mechanical failures in time, and improve the maintenance of the airstairs. Efficiency, thereby prolonging the service life of the boarding ladder.

In certain embodiments, the first linkage system 28 includes a first rod and a second rod 284 . The first rod and the second rod 284 are arranged on the folding frame 22 , the first rod and the corresponding second rod 284 are hinged, and the first rod is respectively connected to the corresponding translation frame 24 .

In the embodiment of the present invention, through the first connecting rod system, the boarding ladder with the gear-coordinated economical unlocking structure can realize automatic unfolding and folding of the folding part, which reduces the intensity of manual labor and improves the use of the boarding ladder efficiency.

In some embodiments, the first rod and corresponding translation frame 24 are hinged.

In some embodiments, the first rod and corresponding folding frame 22 are hinged.

In this way, the hinged structure is more convenient for the opening and folding of the first link system, so that the boarding ladder with the gear-fitted economical unlocking structure of this embodiment is easy to realize.

In some embodiments, a positioning portion 1222 is disposed on an end of the ball screw 122 close to the folding portion 20 , and the positioning portion 1222 forms a limiting protrusion 1224 . The folding frame 22 is provided with a safety structure 222, the safety structure 222 includes an operation part 224, a connecting piece 226 and a fixing piece 228, the fixing piece 228 is arranged on the connecting plate 26, the fixing piece 228 forms a limiting groove 2282, and the connecting piece 226 is connected The operating part 224 and the fixing part 228 , the operating part 224 controls the connecting part 226 to drive the fixing part 228 to move in the vertical direction.

In the embodiment of the present invention, when the folding part moves to the designated position, the fixing part can be manually controlled by the operating part to make the limit protrusion cooperate with the limit groove to limit the movement of the folding part; or the fixing part can be manually controlled by the operating part Lift up to separate the limiting protrusion and the limiting groove to facilitate the movement of the folding part. In this way, the stability of the boarding ladder with the gear-matched economical unlocking structure is greatly enhanced.

In some embodiments, the top of the limiting protrusion 1224 is arc-shaped, and the bottom of the limiting groove 2282 is correspondingly arc-shaped.

In this way, the arc shape reduces the wear caused when the limiting protrusions and the limiting grooves come into contact, prolongs the service life of the fixing parts and positioning parts, and reduces the maintenance cost of the boarding ladder in this embodiment.

Specifically, in this embodiment, the position-limiting protrusion protrudes toward a direction close to the fixing member, and the position-limiting groove is recessed towards a direction away from the positioning portion. At the same time, after the cooperation between the limiting groove and the limiting protrusion, displacement between the folding part and the ball screw, that is, the fixing part, cannot occur.

In some embodiments, the operating part 224 includes a limiting member 2242 and a rotating shaft 2244. The limiting member 2242 is connected to the connecting member 226 through the rotating shaft 2244. The folding frame 22 is provided with an arc track 221, and the arc track 221 is provided with multiple There are two positioning slots 2212, and the limiting part 2242 drives the connecting part 226 to rotate around the rotating shaft 2244 to drive the fixing part 228 to rise and fall.

In this way, the operator can operate the operating part 224 to rotate around the rotating shaft to raise or lower the fixing part, so that the folding part and the ball screw are relatively stationary or relatively stationary, and the operating part and the corresponding positioning groove are fixed. To fix the operation part.

In some embodiments, a manual unlocking structure 232 is also included, and the manual unlocking structure 232 is arranged on the sealing plate 23 . The manual unlocking structure 232 includes a rack 2322, a gear 2324, a control member 2326, a handle 2328, and a limit rod 2321. The rack 2322 is connected to the control member 2326 and the limit rod 2321. The rack 2322 is engaged with the gear 2324, and the handle 2328 is connected to the gear 2324. . The control member 2326 drives the limit rod 2321 to move through the rack 2322 to engage with and separate from the fixing part 10 , and to fix the sealing plate 23 on the fixing part 10 and separate from the fixing part 10 .

In the embodiment of the present invention, if the boarding ladder with gear-coordinated economical unlocking structure needs to be unfolded, if the power is cut off, the handle can be manually operated, and the handle can be turned to drive the gear to rotate, and then drive the rack to move, changing the position of the limit lever , so as to realize the opening of the folding part and ensure the normal use of the boarding ladder with gear-cooperated economical unlocking structure.

In some embodiments, the control part 2326 is connected with a movable part, and the movable part is connected with the rack 2322, and the control part 2326 controls the movement of the rack 2322 through the movable part.

In this way, the control part is energized to drive the movable part to move, and the movable part drives the rack to move.

Specifically, in this embodiment, the control element is an electromagnetic relay.

In some embodiments, the sealing plate 23 is also provided with a rack limiter 234, and the rack 2322 is provided with a positioning rod 2323. When the rack 2322 moves to the limit position away from the control member 2326, the positioning rod 2323 Contact the rack limiter 234 to prevent the rack 2322 from continuing to move.

In some embodiments, the sealing plate 23 is provided with a plurality of limiting tracks 236 on the same straight line, the limiting tracks 236 are circular, and the limiting rod 2321 is located in the limiting tracks 236 .

In this way, the limiting rod can move in the limiting track to connect with structures at different positions on the fixing part, so as to fix the sealing plate and the fixing part or separate the sealing plate and the fixing part.

In the description of this specification, descriptions referring to the terms "one embodiment", "certain embodiments", "exemplary embodiments", "example", "specific examples", or "some examples" are meant to be combined with Specific features, structures, materials, or characteristics described in the preceding embodiments or examples are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the invention is defined by the claims and their equivalents.

Claims (10)

1. A boarding ladder with a gear-cooperating economical unlocking structure, characterized in that it comprises a fixed part and a folding part, the folding part is movably stored in the fixed part, and the fixed part is provided with a drive assembly, the drive assembly includes an electrically connected ball screw and drive, The folding part includes a folding frame, a translation frame, a connecting plate, a first linkage system, a pedal and a sealing plate, the connecting plate is connected to the translation frame, the translation frame is connected to the folding frame, and the pedal is rotated to set on the folding frame, the first linkage system connects the folding frame and the translation frame, The driver drives the ball screw to rotate to drive the translation frame to move along the axis of the ball screw and drive the folding frame to open and contract through the first linkage system, The boarding ladder with a gear-fitted economical unlocking structure also includes a manual unlocking structure, the manual unlocking structure is arranged on the sealing plate, and the manual unlocking structure includes a rack, a gear, a control member, a handle, a limit rod, the rack is connected to the control member and the limit rod, the rack is meshed with the gear, the handle is connected to the gear, The control member drives the limit rod to move through the rack to engage with and separate from the fixing part, and to fix the sealing plate on the fixing part and to separate from the fixing part. 2. The boarding ladder with a gear-coordinated economic unlocking structure according to claim 1, characterized in that, the control part is connected with a movable part, and the movable part is connected with the rack, and the control part passes through the The movable part controls the movement of the rack. 3. The boarding ladder with a gear-fitted economical unlocking structure according to claim 1, wherein a rack limiter is also provided on the sealing plate, and a positioning rod is provided on the rack, so that When the rack moves away from the control part to a limit position, the positioning rod contacts the rack limiting device to prevent the rack from continuing to move. 4. The boarding ladder with a gear-coordinated economical unlocking structure according to claim 1, wherein the sealing plate is provided with a plurality of position-limiting tracks on the same straight line, and the position-limiting tracks are circular Ring-shaped, the limiting rod is located in the limiting track. 5. The boarding ladder with a gear-cooperating economical unlocking structure according to claim 1, wherein the fixed part comprises a bottom frame, a side frame and a fixed frame, and the bottom frame, the side frame and the The fixing frame cooperates to form a fixing part port, the side frame is provided with a first track, the folding part slides on the first track and enters and exits the fixing part through the fixing part port, and the folding part After being accommodated in the fixing part, the sealing plate seals the port of the fixing part. 6. The boarding ladder with a gear-fitted economical unlocking structure according to claim 5, wherein the side frame comprises a first section and a second section, and the length of the first section in the vertical direction is greater than the length of the second section in the vertical direction, A second track is opened on the first section, The boarding ladder with a gear-matched economical unlocking structure further includes a third connecting rod, the third connecting rod connects the first track and the sealing plate, The translation frame is slidably arranged on the second track. 7. The boarding ladder with a geared economical unlocking structure according to claim 6, wherein the first rail comprises a horizontal portion on the translational frame and an inclined portion on the folding frame , the folding frame is provided with a pulley, and the pulley is slidably arranged on the first track. 8. The boarding ladder with a geared economical unlocking structure according to claim 1, wherein the first linkage system comprises a first rod and a second rod, The first rod and the second rod are arranged on the folding frame, the first rod is hinged to the corresponding second rod, and the first rod is respectively connected to the corresponding translation frame. 9. The boarding ladder with a gear-coordinated economical unlocking structure according to claim 1, wherein a positioning portion is arranged on the end of the ball screw close to the folding portion, and the positioning portion forms a limited position raised, A safety structure is provided on the folding frame, and the safety structure includes an operation part, a connecting piece and a fixing piece, the fixing piece is arranged on the connecting plate, the fixing piece forms a limiting groove, and the connecting piece The operating part is connected to the fixing part, and the operating part controls the connecting part to drive the fixing part to move in the vertical direction. 10. The boarding ladder with a gear-coordinated economical unlocking structure according to claim 9, wherein the operating part includes a limiter and a rotating shaft, and the limiter is connected to the connecting member through the rotating shaft , the folding frame is provided with an arc track, and a plurality of positioning grooves are opened on the arc track, and the limiting part drives the connecting part to rotate around the rotating shaft to drive the fixing part to rise and fall.