Leading-edge structure, passenger boarding bridge floor structure and passenger boarding bridge

A leading-edge structure of a passenger boarding bridge floor includes a protruding assembly, a protruding guide structure and an energy storage assembly. Under action of the protruding guide structure and the energy storage assembly, the protruding assembly may be protruded or contracted relative to the passenger boarding bridge floor body. The protruding assembly may automatically adjust according to the position of the airplane, under the action of limiting and guiding of the protruding guide structure, the protruding assembly may be adaptively protruded or retracted relative to the passenger boarding bridge floor body, so as to improve the safety of the airplane.

TECHNICAL FIELD

This disclosure relates to a passenger boarding bridge technique, and in particular, to a leading-edge structure of the passenger boarding bridge floor. The present disclosure also relates to a passenger boarding bridge floor structure having the leading-edge structure and a passenger boarding bridge having the same.

BACKGROUND

A passenger boarding bridge is an elevating passageway for connecting a waiting hall to an airplane, having one end connected to a boarding gate of the airport and the other end lapping the cabin door of an airplane, thereby allowing the passengers to step into the airplane through the passenger boarding bridge. The passenger boarding bridge disclosed herein comprises improvements that may greatly improve the operational efficiency of the airport.

At present, a passenger boarding bridge used for an airport generally includes a movable floor that forms a hard contact with the airplane. It may be appreciated that while the passenger boarding bridge approaches the airplane, an operation error or malfunction of a touch-stop button, or some other unintended condition, may cause the passenger boarding bridge to rapidly move into contact with the airplane, such that the airplane is jeopardized and may even injure the passengers inside the airplane. In addition, after the passenger boarding bridge has lapped on the airplane, passengers getting off the airplane or cargo being unloaded from the airplane reduces the weight of the airplane, causing the cabin door of the airplane to ascend to different extents. As the cabin door rises, the portion of the cabin door in contact with the passenger boarding bridge may suffer sufficient pressure so as to cause damage. Likewise, when the passenger boarding bridge has already been lapped on the airplane, passengers boarding the airplane or the cargo being loaded into the airplane will increase the weight of the airplane, causing the cabin door of the airplane to descend to different extents. As the cabin door lowers, a larger gap will be formed between the cabin door and passenger boarding bridge, causing passengers or workers to more easily suffer accidents, for example, falling over or falling from the gap, when they pass through the gap.

SUMMARY

An embodiment of the present disclosure provides a leading-edge structure mounted on a front end edge of a passenger boarding bridge floor, wherein, the leading-edge structure of the passenger boarding bridge floor includes a protruding assembly configured to be protruded or retracted relative to the passenger boarding bridge floor body, wherein the leading-edge of the protruding assembly may directly contact one side of a cabin door of an airplane; a protruding guide structure between the protruding assembly and the passenger boarding bridge floor body configured to limit and guide protruding or retracting movement of the protruding assembly; and an energy storage assembly, configured to store energy while the protruding assembly retracts relative to the passenger boarding bridge floor body, and release energy while the protruding assembly protrudes relative to the passenger boarding bridge floor body.

According to one embodiment, the leading-edge structure of the passenger boarding bridge floor further includes a cab apron, the cab apron further comprising a first end elastically hinged on the protruding assembly and a second end lapped on a passenger boarding bridge floor; wherein a length of the cab apron is larger than a maximum protruded distance of the protruding assembly.

According to one embodiment, an elastic pressing mechanism is mounted between the cab apron and the protruding assembly, the elastic pressing mechanism including a connector that is connected to the first end of the cab apron and a first elastic member between the connector and the rear end of the protruding assembly, or a connector that is connected to the rear end of the protruding assembly and a first elastic member between the connector and the cab apron.

According to one embodiment, the protruding assembly includes a flexible body attached to a fixed mount; wherein the flexible body is the front end edge of the protruding assembly; and the flexible body and the fixed mount extend together.

According to one embodiment, the protruding assembly further includes a support; the flexible body comprises a rear abutting part and a front abutting part; the support and the fixed mount are respectively arranged on two sides opposite to each other of the rear abutting part; the support is connected with the fixed mount via at least one fastener such that the support clamps the rear abutting part and fixes the flexible body onto the fixed mount.

According to one embodiment, the protruding guide structure comprises a hinge assembly, the hinge assembly comprising a first member and a second member, each of which comprises a first end and a second end; the first end of the first member is hinged to the protruding assembly; the first end of the second member is hinged to the second end of the first member; the second end of the second member is hinged to the passenger boarding bridge floor.

According to one embodiment, the protruding guide structure further comprising a four-bar linkage structure; the four-bar linkage structure includes a first bar, a second bar and a limiting bar, each of which includes a first end and a second end, the first end of the first bar is hinged to the passenger boarding bridge floor, the second end of the first bar is hinged to the first end of the second bar, the second end of the second bar is hinged to the protruding assembly, the first end of the limiting bar is hinged to the second bar excluding end portions of the second bar, and the second end of the limiting bar is hinged to the passenger boarding bridge floor; in the extending direction of the protruding assembly, a second hinged point of the limiting bar is kept a first distance away from the first end hinged point of the first bar for a first distance.

According to one embodiment, the four-bar linkage structure is configured to be near a central portion arrangement of the passenger boarding bridge floor, and the second end of the limiting bar is hinged to the central portion of the passenger boarding bridge floor.

According to one embodiment, the energy storage assembly comprises an elastic member and a first rigid member, each of which comprises a first end and a second end; the first end of the first rigid member is fixed on the protruding assembly, the second end of the first rigid member extends to the passenger boarding bridge floor, the first end of the elastic member is fixed on the second end of the first rigid member, the second end of the elastic member is fixed on the front end portion of the passenger boarding bridge floor, the length of the first rigid member is larger than the maximum protruded distance of the protruding assembly.

According to one embodiment, the elastic member is stretched to store energy while the protruding assembly is retracted; and the elastic member releases energy while the protruding assembly is protruded.

According to one embodiment, the first rigid member is on one end of a protruding assembly and further includes: an additional first rigid member, on the opposite end of the protruding assembly; wherein each first rigid member includes an extension member, which extends in an extending direction of the passenger boarding bridge, and includes a first end and a second end, and the second end of the extension member is fixed on the first end of the second elastic member; a spacer, which has an extending direction that is perpendicular to the extending direction of the extension member, the protruding assembly is fixed on a side surface of the spacer, the first end of the extension member is fixed on the other side surface of the spacer, and the side surface and the other side surface are arranged opposite to each other; and a plurality of second rigid members arranged between the two first rigid members equally, wherein each of the plurality of second rigid members comprises a first end that is fixed on the protruding assembly and a second end that is fixed on the first end of the second elastic member.

According to one embodiment, the leading-edge structure of the passenger boarding bridge floor further comprises a strike limiting switch and a striking plate on and matched with the limiting switch, wherein the striking plate is on the spacer, and one end of the striking plate corresponding to one end of the strike limiting switch is bent upwardly.

According to one embodiment, the leading-edge structure of the passenger boarding bridge floor further comprises a safety assembly, the safety assembly comprising a first end affixed to the protruding assembly and a second end that is affixed to the passenger boarding bridge floor.

According to one embodiment, a passenger boarding bridge comprising the passenger boarding bridge floor structure comprising the leading-edge structure of the passenger boarding bridge floor according to present disclosure.

According to one embodiment, the passenger boarding bridge wherein the passenger boarding bridge floor structure is fixed on the passenger boarding bridge body.

REFERENCE MEMBER LIST

DETAILED DESCRIPTION

Typical embodiments embodying features and advantages of this disclosure will be set forth in detail. It should be understood that various modifications may be made on different embodiments of this disclosure without departing from the scope of this disclosure, wherein the description and drawings are used for description but not limited to this disclosure.

The terms “front” and “rear” as used in following embodiments are described with reference to the actual structure of the passenger boarding bridge floor structure. The ordinal terms, such as “first” and “second,” used herein are intended to illustrate this disclosure rather than to define order of the components in the embodiments of the present disclosure.

In order to solve the above problem, a primary object of the present disclosure is to provide a leading-edge structure of the passenger boarding bridge floor that may automatically adjust to adapt to the position of the airplane so as to improve safety of the airplane.

A further object of the present disclosure is to provide a passenger boarding bridge floor structure having the leading-edge structure and a passenger boarding bridge having the same, which may automatically adjust according to the position of the airplane to adapt to the airplane, so as to improve safety of the airplane.

An embodiment of the present disclosure provides a leading-edge structure of the passenger boarding bridge floor. The leading-edge structure of the passenger boarding bridge floor is mounted on a front end edge of the passenger boarding bridge floor. It should be noted that an end of the passenger boarding bridge close to a cabin door of an airplane is defined as the front end. Wherein, the leading-edge structure of the passenger boarding bridge floor includes a protruding assembly1, which may be protruded or retracted relative to the passenger boarding bridge floor body, and the front end edge of the protruding assembly1is abutted against one side of the cabin door. Referring toFIG. 1toFIG. 3, it may be understood that the leading-edge structure of the passenger boarding bridge floor further includes a protruding guide structure2, which is arranged between the protruding assembly1and the passenger boarding bridge floor and limits and guides protruding or retracting movement of the protruding assembly1. The leading-edge structure of the passenger boarding bridge floor further includes an energy storage assembly3. The energy storage assembly3may store energy while the protruding assembly1is retracted relative to the passenger boarding bridge floor body, and the energy storage assembly3may release energy while the protruding assembly1is protruded relative to the passenger boarding bridge floor body. Under the action of the energy storage assembly3, the protruding assembly1of the leading-edge structure of the passenger boarding bridge floor may press against the cabin door of the airplane, and may automatically protrude or retract according to the position of the airplane. Furthermore, the protruding guide structure2may limit movement trajectory of the protruding assembly1, to avoid unstable movement of the protruding assembly1and improve safety of the airplane.

In particular, it may be appreciated fromFIG. 1toFIG. 3that, for non-limiting example, the protruding assembly1is located on foremost end of the leading-edge structure of the passenger boarding bridge floor, and makes first contact with the airplane when the airplane is in contact with the passenger boarding bridge. In the state that the leading-edge structure of the passenger boarding bridge floor is not in contact with the cabin door of the airplane, the protruding assembly1is in a completely protruded state, at this time, a distance of the protruding assembly1protrudes relative to the passenger boarding bridge floor body is maximum, in such state, the energy storage assembly3may be in an un-storage state. At a moment when the leading-edge structure of the passenger boarding bridge floor contacts with the cabin door of the airplane, the protruding assembly1may not be retracted, and the energy storage assembly3may be maintained in a no energy-storage state. As the airplane continuously approaches the passenger boarding bridge floor, under the action of airplane pressure, the protruding assembly1retracts towards the passenger boarding bridge floor, at this moment, the energy storage assembly3stores energy. As the airplane departs from the passenger boarding bridge floor, the energy stored in the energy storage assembly3acts on the protruding assembly1, such that the protruding assembly1protrudes relative to a floor structure of the passenger boarding bridge, and at this moment the energy storage assembly3releases energy.

It may be appreciated that the energy storage assembly3may be a spring assembly, a hydraulic cylinder or a pneumatic cylinder and the like, which may store energy while the protruding assembly1is retracted and release the stored energy while the protruding assembly1is protruded, all within the extent for protection of the present disclosure.

In order to further improve safety of the airplane, a cab apron4may further be provided between the protruding assembly1and a passenger boarding bridge floor body, to form a gap coverage between the protruding assembly1and the passenger boarding bridge floor body. As shown inFIG. 4, as one embodiment of the present disclosure, the leading-edge structure of the passenger boarding bridge floor further includes a cab apron4, in particular, a gap may be formed between the protruding assembly1and the passenger boarding bridge floor body when the protruding assembly1protrudes with respect to the passenger boarding bridge floor body, and the gap as described above may be covered by the cab apron4. The cab apron4provides support for the passengers or workers when they pass through the gap, to prevent the passengers or workers from falling over, and even from falling from the gap.

More particularly, the cab apron4may also include a first end and a second end. The first end of the cab apron4is elastically hinged on the protruding assembly1, and the second end of the cab apron4is lapped on the passenger boarding bridge floor. The second end of the cab apron4may be adjusted up and down when human body or the weight passes through the cab apron4, so as to avoid the cab apron4from being broken, and further improve the safety of the airplane. It may be appreciated that the length of the cab apron4may be arranged to be larger than the maximum protruded distance of the protruding assembly1, in order to permit the cab apron4to cover the gap. As shown inFIG. 4toFIG. 9, an elastic hinged member41is fixedly arranged on the rear end of the protruding assembly1, for example but not limited to, the first end of the cab apron4may be arranged around the elastic hinged member41. As shown inFIG. 4toFIG. 9, the sectional shape of the elastic hinged member41may be circular, but not limited thereto, the sectional shape of the elastic hinged member41also may be ellipse or arc.)

In order to further control the adjustment range of the second end of the cab apron4, further referring toFIG. 4toFIG. 9, an elastic pressing mechanism42is mounted between the cab apron4and the protruding assembly1. The elastic pressing mechanism42includes a connector and a first elastic member. The connector is connected to the cab apron4or the rear end of the protruding assembly1, and the first elastic member is arranged between the rear end of the protruding assembly1and the connector or between the cab apron4and the connector, for example but not limited to, the first elastic member may be a spring, and the connector may be a bolt and nut assembly. In particular, a through hole is arranged on the corresponding positions of the cab apron4and the rear end of the protruding assembly1, respectively. The bolt passes through the spring through the two through holes, and thereby the bolt matches with the nut, such that the nut is rotated to an appropriate position, and then stops rotation.

It may be appreciated that both ends of the spring may be compressed on the nut and the rear end of the protruding assembly1, respectively, but not limited thereto, the spring may be arranged on the cab apron4and the rear end of the protruding assembly1such that the both ends of the spring are compressed on the cab apron4and the rear end of the protruding assembly1. It may be appreciated that the connector may also be a rivet or a member that could be considered by those skilled in the art. The first elastic member may also be a pneumatic spring or a hydraulic cylinder and the first elastic member may store energy when the weight acts on the cab apron4and may release energy and restore the cab apron4when the weight leaves the cab apron4, all of which are within the extent for protection of the present disclosure.

In order to further improve the safety of the airplane and prevent the passenger boarding bridge from damaging the airplane, referring toFIG. 4toFIG. 9, the protruding assembly1includes a flexible body11and a fixed mount12. The flexible body11is fixed on the fixed mount12. The flexible body11is the front end edge of the protruding assembly1. The flexible body11makes first contact with the airplane while the airplane approaches a leading-edge assembly of the passenger boarding bridge floor. The extending directions of the flexible body11and the fixed mount12are the same. The flexible body11may be a rubber body, a plastic body or a fiber body, and the members that may be deformed during the passenger boarding bridge floor approaches to the airplane, all of which are within the extent for protection of the present disclosure. The flexible body11may be fixed on the fixed mount12, through which the flexible body11may be connected to the other members, for example but not limited to, the flexible body11may be connected to a protruding guide structure2or the energy storage assembly3via the fixed mount12. It may be appreciated that the fixed mount12may be a channel steel. The cross-sectional shape of the channel steel may be U-shape, as shown inFIG. 4toFIG. 9.

Since the flexible body11is easily deformed, in order to maintain the flexible body11in a certain shape, referring toFIG. 4toFIG. 9, as one embodiment of the present disclosure, the protruding assembly1further includes a support13to maintain the protruding assembly1in a certain shape. In particular, the flexible body11may have a cylindrical structure, for example but not limited to, the side wall of the cylindrical structure may be fixed on the fixed mount12. In particular, the flexible body11includes a rear abutting part and a front abutting part. The support13may be protruded into the cylindrical structure, and the fixed mount12may be arranged on the outer surface of the cylindrical structure, such that the support13and the fixed mount12are arranged on both sides opposite to each other of the rear abutting part. It may be appreciated that the support13and the fixed mount12may be arranged on the inner side and the outer side of the cylindrical structure, respectively.

In addition, it may be appreciated that the support13and the fixed mount12may be connected with each other by various means of connection, for example but not limited to, the support13and the fixed mount12may be fixed by a fastener, or a snap structure or by means of welding, all of which are within the extent for protection of this disclosure. For non-limiting example, referring toFIGS. 4-9, the support13may be fixed on the fixed mount12by at least one fastener, such that the support13may clamp the rear abutting part and fix the flexible body11on the fixed mount12. It may be appreciated that the support13may be one and extends in an extending direction of the flexible body11. Besides, it may be appreciated that the support13may be in plural, the plurality of support13may be equally arranged in the extending direction of the flexible body11, respectively.

Referring toFIGS. 1-3, as one embodiment of the present disclosure, the protruding guide structure2includes a hinge assembly21. The hinge assembly21includes a first member211and a second member212, each of which includes a first end and a second end. The first end of the first member211is hinged to the protruding assembly1. The first end of the second member212is hinged to the second end of the first member211. The second end of the second member212is hinged to the passenger boarding bridge floor.

It may be appreciated that a rotary shaft of the hinged assembly21may be arranged perpendicularly to the extending direction of the passenger boarding bridge floor, to carry a part of gravity of the protruding assembly1. It may be appreciated that the hinged assembly21may be in plural, the plurality of the hinged assembly21may be equally arranged in the extending direction of the protruding assembly1. As shown inFIG. 1toFIG. 3, the rotary shaft located between the first member211and the second member212may be referred as an intermediate rotary shaft. A part of the intermediate rotary shafts may move opposite to each other during the process that the protruding assembly1is retracted, so as to prevent the protruding assembly1from moving left and right.

As shown inFIG. 9, a longitudinal section of the first member211may be in an I type. A first shaft hole is arranged on the both ends of the first member211, respectively. A longitudinal section of the second member212may be in a H type. Two protruding parts opposite to each other and a notch located between the two protruding parts are formed on the both ends of the second member212, respectively. A second shaft hole is formed on the two protruding parts, respectively. The second shaft hole is matched with the first shaft hole. The rotary shafts may simultaneously go through the first shaft hole and the second shaft hole. The first member21and the second member212are respectively rotated around the rotary shaft. The width of the notch of the second member212matches with the sectional width of the first member211.

It may be appreciated that two protruding parts matched with the first end of the first member211are formed on the rear end of the protruding assembly1, and the matching means be as described above, thereby the description may be omitted herein. Besides, it may be appreciated that a plurality of protruding parts may be provided on both ends of the first member211, and may have the shaft holes formed thereon. In this case, a protruding part matched with the protruding part on the first member211may be formed on the protruding assembly1or the second member212, all of which are within the extent for protection of the present disclosure.

In the case that the cabin door of the airplane has a curvature, in order to attach the protruding assembly1to the cabin door well, continuously referring toFIGS. 1-3, as one embodiment of the present disclosure, the protruding guide structure2further includes a four-bar linkage structure22. The four-bar linkage structure22may cause one point on the protruding assembly1to oscillate around one pivot point on the four-bar linkage structure22, such that the left end and the right end of the protruding assembly1protrude for different distances, respectively.

The four-bar linkage structure22includes a first bar221, a second bar222and a limiting bar223, each of which includes a first end and a second end. The first end of the first bar221is hinged to the passenger boarding bridge floor, the second end of the first bar221is hinged to the first end of the second bar222, the second end of the second bar222is hinged to the protruding assembly1, the first end of the limiting bar223is hinged to the second bar222excluding end portions of the second bar, and the second end of the limiting bar223is hinged to the passenger boarding bridge floor.

It may be appreciated that the left end and the right end of the protruding assembly1may respectively protrude for different distances by means of the four-bar linkage structure22, and the left and right movement of the protruding assembly1may further be limited. A second end hinged point of the limiting bar223is distanced from the first end hinged point of the first bar221for a first distance L. It may be appreciated that a sum of the length of the first bar221and the first distance L is equal to a sum of the length of the second bar222between the first bar221and the limiting bar223and the length of the limiting bar223, in order to attach the protruding assembly1to the passenger boarding bridge floor when the protruding assembly1is retracted, but not limited thereto.

Referring toFIG. 1andFIG. 10, the protruding assembly1may oscillate around the second end of the second bar222as a pivot point. The length of the first bar221may be AB. The length of the limiting bar223may be CD. The second bar222is divided into two sections by the first end of the limiting bar223, and the length of the two sections are BC and CM, respectively, particularly as shown inFIG. 10. Continuously referring toFIG. 10, in the process of the movement of the four-bar linkage structure22, the second end of the second bar222substantially makes a straight line movement, that is, a line section AM coincides with a line section MM, and thereby the protruding assembly1hardly makes left and right movement.

Relationships between the bars of the four-bar linkage structure22are presented as follows: a value of BC: AB is 0.4 to 0.8; a value of CD: AB is 3 to 3.5; a value of AD: AB is 2.5 to 3; a value of CM: AB is 0.3 to 0.5. A preferable embodiment of the present disclosure is presented as follows: BC: AB=0.56, CD: AB=3.3; AD: AB=2.9; CM: AB=0.4.

The length of the first bar221, the second bar222and the limiting bar223may be selected according to situation, for example but not limited to, AB=BM=145 mm, CD=477.5 mm, in addition, the first end hinged point of the limiting bar223divides the second bar222into two sections of BC=80 mm and CM=65 mm, besides, the first distance L=414 mm, but not limited thereto.

Continuously referring toFIGS. 1-3, for non-limiting example, the hinge assembly21may be in plural, and the four-bar linkage structure22is one, but not limited thereto, the four-bar linkage structure22may also be in plural. Distribution of the hinge assembly21and the four-bar linkage structure22may be arranged as follows: when there are two the hinged assemblies21, the four-bar linkage structure22is arranged between the two hinged assemblies21, with the equal distance from the four-bar linkage structure22to each of the two hinged assemblies21, but not limited thereto. The hinge assembly21may also be provided on one side of the four-bar linkage structure22. When there are at least three hinged assemblies21, the four-bar linkage structure22is arranged between any two of the hinged assemblies21, the distances from the four-bar linkage structure22to the adjacent hinged assemblies21are the same, and the distance between the adjacent hinged assemblies21is equal to the distance from the hinge assembly21to the four-bar linkage structure22.

Continuously referring toFIGS. 1-3, as one embodiment of the present disclosure, the four-bar linkage structure22is arranged close to the central part of the passenger boarding bridge floor, and the second end of the limiting bar223is hinged to the central part of the passenger boarding bridge floor.

Referring toFIGS. 1-3,FIG. 8, andFIG. 9, as one embodiment of the present disclosure, the energy storage assembly3includes a second elastic member3and a rigid member31, each of which includes a first end and a second end. The first end of the rigid member31is fixed on the protruding assembly1, and the second end of the rigid member31extends to the passenger boarding bridge floor, and the first end of the second elastic member32is fixed on the second end of the rigid member31, and the second end of the second elastic member32is fixed on the front end portion of the passenger boarding bridge floor, and the length of the rigid member31is larger than the maximum protruded distance of the protruding assembly1.

It may be appreciated that the energy storage assembly3may be a spring assembly, a cylindrical cylinder or a pneumatic cylinder, and the like that may store energy during the protruding assembly1may be retracted and may release the stored energy during the protruding assembly1may be protruded, all of which are within the extent for protection of the present disclosure.

Continuously referring toFIGS. 1-3, the second elastic member32may be a spring, when all of the protruding assemblies1are in the protruded state, the second elastic member32may be in a natural state, that is, without being stretched or compressed, in such state, the second elastic member32is in a state with no energy storage. The second elastic member32is stretched to store energy during the protruding assembly1is retracted, and the second elastic member32is reset to release energy during the protruding assembly1is protruded.

Referring toFIG. 4andFIG. 5, as one embodiment of the present disclosure, the rigid member31includes first rigid members311. There are two first rigid members311, which are respectively arranged on both ends of the protruding assembly1, wherein, the first rigid member311includes an extension member3111. The extension member3111extends in an extending direction of the passenger boarding bridge. The extension member3111includes a first end and a second end. The second end of the extension member3111is fixed on the first end of the second elastic member32. The extending direction of a spacer3112is perpendicular to the extending direction of the extension member3111. The protruding assembly1is fixed on the side surface of the spacer3112, the first end of the extension member3111is fixed on the other side surface of the spacer3112, and the side surface and the other side surface are arranged opposite to each other. The rigid member31further includes second rigid member312. There are a plurality of second rigid members312, which are equally arranged between the two first rigid members311, wherein the second rigid member312includes a first end and a second end; the first end of the second rigid member312is fixed on the protruding assembly1; and the second end of the second rigid member312is fixed on the first end of the second elastic member32. It may be appreciated that, for example but not limited to, the extension member3111may be an angle steel. The extension member3111may extend in an extending direction of the passenger boarding bridge floor. The spacer3112may be a square steel. The extending direction of the spacer3112may be perpendicular to the extending direction of the extension member3111. The first end of the extension member3111may be connected by the way of welding and riveting or using a fastener, all of which are within the extent for protection of the present disclosure. The square steel may be connected with the protruding assembly1by the way of welding and riveting or using the fastener, all of which are within the extent for protection of the present disclosure.

Continuously referring toFIG. 4andFIG. 5, as one embodiment of the present disclosure, the leading-edge structure of the passenger boarding bridge floor further includes a strike limiting switch and a striking plate of limiting switch5, which are matched with each other. The striking plate of limiting switch5is arranged on the spacer3112, and one end of the striking plate of limiting switch5corresponding to the strike limiting switch is bent upwardly, to trigger the strike limiting switch.

As one embodiment of the present disclosure, the leading-edge structure of the passenger boarding bridge floor further includes a safety assembly. The safety assembly includes a first end that is fixed on the protruding assembly1and a second end that is fixed on the passenger boarding bridge floor.

The present disclosure further provides a passenger boarding bridge floor structure, wherein, the passenger boarding bridge floor structure includes a leading-edge structure of the passenger boarding bridge floor of the present disclosure.

The present disclosure further provides a passenger boarding bridge, wherein the passenger boarding bridge includes a passenger boarding bridge body and the passenger boarding bridge floor structure of the present disclosure, and the passenger boarding bridge floor structure is fixed on the passenger boarding bridge body.

As above described in the technical solution, advantages and effects of the leading-edge structure of the passenger boarding bridge floor according to the present disclosure are presented as follows: the leading-edge structure of the passenger boarding bridge floor includes a protruding assembly that may automatically adjust according to the position of the airplane, under the action of limiting and guiding of the protruding guide structure, the protruding assembly may be adaptively protruded or retracted relative to the passenger boarding bridge floor body, so as to improve the safety of the airplane.

A passenger boarding bridge floor structure and a passenger boarding bridge according to the embodiments of the present disclosure include the leading-edge structure of the passenger boarding bridge floor as described above, such that the passenger boarding bridge floor structure or the passenger boarding bridge may adapt to the position of the airplane to provide safety of the airplane.

Although the present disclosure has been described with reference to several exemplary embodiments, it should be understood that the words that have been used are words of description and illustration, rather than words of limitation. As the present disclosure may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, unless otherwise specified, but rather should be considered broadly within its scope as defined in the appended claims, and therefore all changes and modifications that fall within the metes and bounds of the claims, or equivalents of such metes and bounds are therefore intended to be embraced by the appended claims.