Airboarding bridge with retractable cable guardrail and center aisle fail-safe function

Abstract

The present invention discloses a boarding bridge with a retractable cable guardrail and a middle aisle loss-of-control protection function. The boarding bridge comprises a boarding bridge body, the boarding bridge body including a front aisle, a middle aisle that can be retracted into the front aisle, and a rear aisle that can be retracted into the middle aisle. The boarding bridge body is provided with at least one set of traction linkage mechanisms that can link the front aisle and the middle aisle. The top of the boarding bridge body is also provided with a cable-type retractable guardrail that can link the front aisle and the middle aisle. The cable-type retractable guardrail can serve as a guardrail that can extend and contract with the boarding bridge body, and can also play a traction linkage function for the middle aisle, preventing the middle aisle from losing control after the steel cable of the traction linkage mechanism breaks.

Description

Technical Field

[0001] The present invention relates to the technical field of boarding bridges, and in particular to a boarding bridge with a telescopic cable guardrail and a middle channel out-of-control protection function. Background Art

[0002] An aerobridge is a device that connects aircraft to the terminal building, allowing passengers to board and disembark safely. Since aerobridges are frequently used to dock aircraft, daily inspection and maintenance of the aerobridges are necessary. During the maintenance process, staff need to perform maintenance work on top of the aerobridge. Maintenance work on top of the aerobridge is considered high-altitude work, and certain protective measures need to be taken.

[0003] Since the advent of boarding bridges, the middle aisle of a three-section boarding bridge has been linked by two steel cables and pulleys. One cable extends the aisle, while the other retracts it, maintaining the bridge's forward and backward motion. This ensures that the three sections remain fixed relative to each other in a regular pattern, regardless of the bridge's position. The aisle linkage is currently located underneath the bridge. However, if this linkage mechanism, such as a cable breakage or pulley edge damage, develops, the middle aisle becomes unrestricted, posing a safety hazard to both personnel and the bridge equipment.

[0004] In order to ensure the safety of maintenance personnel at the top of the boarding bridge, patent application number 201610877287.5 discloses a synchronous mobile safety protection device for the boarding bridge. It adopts a solution of setting a safety guardrail on the boarding bridge that can be retracted and unfolded synchronously with the various channels of the boarding bridge. The top of the boarding bridge channel has a continuous and integrated guardrail structure to protect the maintenance personnel in all directions. In addition, during the extension and retraction process of the boarding bridge channel, the safety guardrail extends and retracts synchronously with the inner channel. The working process is simple and convenient, which provides protection for the life safety of the maintenance personnel.

[0005] The problem with the aforementioned patented product is that it only provides overhead protection and cannot prevent the middle aisle from losing control if the linkage mechanism of the middle aisle fails. Furthermore, the pulley is located outside the column, exposing the pulley and its internal bearings to wind, frost, rain, and snow. Summary of the Invention

[0006] In view of this, the object of the present invention is to provide a boarding bridge with a telescopic cable guardrail and a middle channel out-of-control protection function.

[0007] The technical solution adopted by the present invention to solve the technical problem is:

[0008] A boarding bridge with a telescopic cable guardrail and a middle channel out-of-control protection function includes a boarding bridge body, the boarding bridge body including a front channel, a middle channel that can be retracted into the front channel, and a rear channel that can be retracted into the middle channel. The boarding bridge body is provided with at least one set of traction linkage mechanisms that can link the front channel and the middle channel. The top of the boarding bridge body is also provided with a cable-type telescopic guardrail that can link the front channel and the middle channel.

[0009] As a further optimization of the above technical solution, the cable-type telescopic guardrail includes a forward protection rope, a backward protection rope, a first post arranged at the rear end of the rear channel, a second post arranged at the rear end of the middle channel, a third post arranged at the rear end of the front channel, and a fourth post arranged on the front channel and located in front of the third post;

[0010] The front end of the rear channel is provided with a tie member housed in the middle channel and located in front of the second column. The second column is provided with a forward traction pulley assembly. The forward protection rope passes over the forward traction pulley assembly, and the tie member and the fourth column are fixedly connected to the two ends of the forward protection rope respectively. The third column is provided with a forward guide structure capable of cooperating with the forward protection rope.

[0011] The front end of the middle channel is provided with a backward traction pulley group accommodated in the front channel and located behind the third column, the first column is provided with a first backward guide structure, the second column is provided with a second backward guide structure, and the third column is provided with a third backward guide structure. One end of the backward protection rope is fixedly connected to the tether member, and the other end of the backward protection rope passes through the second backward guide structure, the first backward guide structure, the second backward guide structure, the third backward guide structure, the backward traction pulley group, the third backward guide structure and is fixedly connected to the third column in sequence.

[0012] As a further optimization of the above technical solution, the forward traction pulley assembly includes a first middle pulley arranged at the lower part of the second column and a second middle pulley arranged at the middle part of the second column;

[0013] The forward guide structure includes a first rope guide member provided in the middle of the third column and a second rope guide member provided on the upper portion of the third column;

[0014] One end of the forward protection rope is fixedly connected to the tether member, and the other end is passed through the first middle pulley, the second middle pulley, the first rope guide, the second rope guide in sequence and is fixedly connected to the upper part of the fourth column.

[0015] As a further optimization of the above technical solution, the first retreat guide structure includes a third rope winding guide member provided in the middle of the first column and a fourth rope winding guide member provided on the upper part of the first column;

[0016] The second backward guide structure includes a third middle pulley provided at the lower portion of the second column, a fourth middle pulley provided at the middle portion of the second column, and a fifth middle pulley provided at the upper portion of the second column;

[0017] The third backward guide structure includes a first rear pulley provided on the upper portion of the third column, a second rear pulley provided on the lower portion of the third column, a third rear pulley provided on the lower portion of the third column, and a fifth rope winding guide provided in the middle portion of the third column;

[0018] The backward traction pulley assembly includes a pulley seat fixed on the middle channel and a backward pulley rotatably arranged on the pulley seat;

[0019] One end of the retreat protection rope is fixedly connected to the tether member, and the other end is passed through the third middle pulley, the fourth middle pulley, the third rope winding guide, the fourth rope winding guide, the fifth middle pulley, the first rear pulley, the second rear pulley, the retreat pulley, the third rear pulley, the fifth rope winding guide in sequence and is connected to the middle of the fourth column.

[0020] As a further optimization solution of the above technical solution, the first rope winding guide and the second rope winding guide are pulleys hinged on the third column, and the third rope winding guide and the fourth rope winding guide are pulleys hinged on the first column.

[0021] As a further optimization of the above technical solution, the third rope winding guide and the fourth rope winding guide can be detachably mounted inside the first column;

[0022] The first middle pulley, the second middle pulley, the third middle pulley, the fourth middle pulley, and the fifth middle pulley are all detachably mounted inside the second column;

[0023] The first rope winding guide, the second rope winding guide, the first rear pulley, the second rear pulley, the third rear pulley and the fifth rope winding guide can all be detachably installed inside the third column.

[0024] As a further optimization solution of the above technical solution, the third rope winding guide and the fourth rope winding guide are both rope winding wheels fixed on the first column, and the first rope winding guide and the fifth rope winding guide are both semi-cylindrical rope winding blocks fixed on the third column.

[0025] As a further optimization of the above technical solution, the forward traction pulley assembly includes a first middle pulley arranged at the lower part of the second column and a second middle pulley arranged at the middle part of the second column;

[0026] The forward guide structure includes a first rope guide member provided in the middle of the third column;

[0027] One end of the forward protection rope is fixedly connected to the tether member, and the other end is passed through the first middle pulley, the second middle pulley, the first rope guide member in sequence and is fixedly connected to the middle of the fourth column.

[0028] As a further optimization of the above technical solution, the first retreat guide structure includes a third rope winding guide member provided in the middle of the first column and a fourth rope winding guide member provided on the upper part of the first column;

[0029] The second backward guide structure includes a third middle pulley provided at the lower portion of the second column, a fourth middle pulley provided at the middle portion of the second column, and a fifth middle pulley provided at the upper portion of the second column;

[0030] The third backward guide structure includes a first rear pulley provided on the upper portion of the third column, a second rear pulley provided on the lower portion of the third column, a third rear pulley provided on the lower portion of the third column, and a fifth rope winding guide provided on the upper portion of the third column;

[0031] The backward traction pulley assembly includes a pulley seat fixed on the middle channel and a backward pulley rotatably arranged on the pulley seat;

[0032] One end of the backward protection rope is fixedly connected to the tether member, and the other end is passed through the third middle pulley, the fourth middle pulley, the third rope winding guide, the fourth rope winding guide, the fifth middle pulley, the first rear pulley, the second rear pulley, the backward pulley, the third rear pulley, the fifth rope winding guide in sequence and is connected to the upper part of the fourth column.

[0033] As a further optimization solution of the above technical solution, the tether member is a double rope head fixing component fixed at the front end of the top of the rear channel.

[0034] As a further optimization solution of the above technical solution, a tension adjuster is provided at one end of the forward safety rope connected to the fourth fixed column, a tension adjuster is provided at one end of the backward safety rope connected to the fourth fixed column, and a monitoring sensor capable of monitoring the status of the forward safety rope and a monitoring sensor capable of monitoring the status of the backward safety rope are provided on the fourth fixed column.

[0035] The beneficial effects of the present invention are as follows: the cable-type telescopic guardrail of the boarding bridge of the present invention can not only serve as a guardrail that can be extended and shortened along with the boarding bridge body, but also play the role of pulling and linking the middle channel, thereby preventing the middle channel from losing control after the steel cable of the traction linkage mechanism breaks. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a front view of the present invention in use;

[0037] Figure 2 is a perspective view of embodiment 1 of the present invention;

[0038] Figure 3 is a cross-sectional view of the cable-type telescopic guardrail in Example 1 of the present invention;

[0039] Figure 4 is a perspective view of the main parts of the cable-type telescopic guardrail in Example 1 of the present invention;

[0040] Figure 5 is a cross-sectional view of a cable-type telescopic guardrail in Example 2 of the present invention;

[0041] Figure 6 is a cross-sectional view of a cable-type telescopic guardrail in Example 3 of the present invention;

[0042] Figure 7 It is a schematic diagram of the connection structure between the traction linkage mechanism and the boarding bridge body;

[0043] Figure 8 It is a three-dimensional diagram of the traction linkage mechanism;

[0044] Figure 9 yes Figure 4 Enlarged view of part A;

[0045] Figure 10 yes Figure 4 Enlarged view of part B;

[0046] Figure 11 Schematic diagram of the connection structure between the retreat protection rope and the first fixed column;

[0047] Figure 12 This is an exploded view of the third fixed column;

[0048] Figure 13 This is an exploded view of the connection structure between the tether and the backward protection rope and the forward protection rope;

[0049] Figure 14 This is an exploded view of the connection structure between the backward traction pulley block and the backward protection rope;

[0050] Figure 15 This is a schematic diagram of the connection structure between the fourth fixed column and the backward protection rope and the forward protection rope. DETAILED DESCRIPTION

[0051] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0052] It should be noted that all directional indications in the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. In addition, the descriptions of "preferred", "sub-preferred", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "preferred" or "sub-preferred" may explicitly or implicitly include at least one such feature.

[0053] Reference Figures 1 to 15 The present invention proposes a boarding bridge with a telescopic cable guardrail and an intermediate channel out-of-control protection function, including a boarding bridge main body, the boarding bridge main body including a front channel 1, an intermediate channel 2 that can be retracted into the front channel 1, and a rear channel 3 that can be retracted into the intermediate channel 2. The bottom of the front channel 1 is connected to a walking mechanism 101 that can drive the boarding bridge main body to perform telescopic movement. The boarding bridge main body is provided with at least one group of traction linkage mechanisms 12 that can link the front channel 1 and the intermediate channel 2. The top of the boarding bridge main body is also provided with a cable-type telescopic guardrail that can link the front channel 1 and the intermediate channel 2.

[0054] The cable-type telescopic guardrail includes a forward protection rope 41, a backward protection rope 42, a first column 51 arranged at the rear end of the rear channel 3, a second column 52 arranged at the rear end of the middle channel 2, a third column 53 arranged at the rear end of the front channel 1, and a fourth column 54 arranged on the front channel 1 and located in front of the third column 53.

[0055] The front end of the rear channel 3 is provided with a tie member 6 accommodated in the middle channel 2 and located in front of the second column 52. The second column 52 is provided with a forward traction pulley group. The forward protection rope 41 passes around the forward traction pulley group, and the tie member 6 and the fourth column 54 are fixedly connected to the two ends of the forward protection rope 41 respectively. The third column 53 is provided with a forward guide structure that can cooperate with the forward protection rope 41 and can limit the forward protection rope 41 from swinging left and right relative to the third column 53.

[0056] The front end of the middle channel 2 is provided with a backward traction pulley group 8 accommodated in the front channel 1 and located behind the third column 53. The first column 51 is provided with a first backward guide structure, the second column 52 is provided with a second backward guide structure, and the third column 53 is provided with a third backward guide structure. One end of the backward protection rope 42 is fixedly connected to the tie rope member 6, and the other end of the backward protection rope 42 passes through the second backward guide structure, the first backward guide structure, the second backward guide structure, the third backward guide structure, the backward traction pulley group 8, the third backward guide structure and is fixedly connected to the third column 53.

[0057] The cable-type telescopic guardrail is designed in such a way that it can serve as a guardrail that can be extended and shortened along with the main body of the boarding bridge, and can also play the role of pulling and linking the middle channel 2, thereby preventing the middle channel 2 from losing control after the steel cable of the traction linkage mechanism 12 breaks.

[0058] There are generally two sets of cable-type telescopic guardrails, which are respectively arranged on the left and right sides of the top of the boarding bridge body. In addition, a set of traction linkage mechanisms 12 that can link the front channel 1 and the middle channel 2 can be set at the bottom of the boarding bridge body. This traction linkage mechanism 12 adopts the existing structure, and its specific structure is as follows: Figure 7 and Figure 8 As shown, the forward wire rope 121 and forward moving pulley 122 are responsible for pulling the middle aisle 2 forward along with the front aisle 1 at a travel ratio of 1:2, extending and deploying the boarding bridge. The reverse wire rope 123 and reverse moving pulley 124 are responsible for pulling the middle aisle 2 backward along with the front aisle 1 at a travel ratio of 1:2, shortening and retracting the boarding bridge. In this scheme, the two sets of cable-type telescopic guardrails act as two spare tires for the traction linkage mechanism 12, forming a triple-redundant protection for the middle aisle 2. The three systems are parallel systems, with static redundancy when working simultaneously. There is no operating state switching process. Problems will only occur if all three systems fail at the same time.

[0059] Alternatively, you can cancel Figure 7 and Figure 8 The traction linkage mechanism 12 shown directly arranges the cable-type telescopic guardrails into two groups, wherein one group of cable-type telescopic guardrails serves as the traction linkage mechanism 12 of the boarding bridge.

[0060] Example 1

[0061] Reference Figure 2-Figure 4 , Figure 9-10 In embodiment 1 of the present invention, the forward protection rope 41 and the backward protection rope 42 are both steel cables, and the forward traction pulley group includes a first middle pulley 721 arranged at the lower part of the second column 52 and a second middle pulley 722 arranged at the middle part of the second column 52.

[0062] The forward guide structure includes a first rope winding guide 731 disposed in the middle of the third column 53 and a second rope winding guide 732 disposed on the upper portion of the third column 53 .

[0063] One end of the forward protection rope 41 is fixedly connected to the tie rope member 6, and the other end is passed through the first middle pulley 721, the second middle pulley 722, the first rope guide 731, the second rope guide 732 in sequence and is fixedly connected to the upper part of the fourth column 54.

[0064] The first backward guide structure includes a third rope winding guide 711 disposed in the middle of the first column 51 and a fourth rope winding guide 712 disposed on the upper portion of the first column 51 .

[0065] The second backward guide structure includes a third middle pulley 723 provided at the lower portion of the second column 52 , a fourth middle pulley 724 provided at the middle portion of the second column 52 , and a fifth middle pulley 725 provided at the upper portion of the second column 52 .

[0066] The third backward guide structure includes a first rear pulley 733 arranged at the upper part of the third column 53, a second rear pulley 734 arranged at the lower part of the third column 53, a third rear pulley 735 arranged at the lower part of the third column 53, and a fifth rope guide 736 arranged in the middle part of the third column 53.

[0067] The backward traction pulley assembly 8 includes a pulley seat 81 fixed on the middle channel and a backward pulley 82 rotatably arranged on the pulley seat 81 .

[0068] The first and second rope guides 731 and 732 are pulleys hinged to the third column 53. The third and fourth rope guides 711 and 712 are pulleys hinged to the first column 51. One end of the backward protection rope 42 is fixedly connected to the tether member 6, and the other end is passed through the third middle pulley 723, the fourth middle pulley 724, the third rope guide 711, the fourth rope guide 712, the fifth middle pulley 725, the first rear pulley 733, the second rear pulley 734, the backward pulley 82, the third rear pulley 735, the fifth rope guide 736, and is connected to the middle of the fourth column 54.

[0069] In order to prevent the cables from slipping off the pulleys, all pulleys are provided with grooves corresponding to the cables.

[0070] Reference Figure 3 and Figure 4With such a design, at least two sections of cables can be set between any two adjacent columns, one section of the cable is located between the upper end of the column and the upper end of the adjacent column, and the other section of the cable is located between the middle end of the column and the middle of the adjacent column. The length of the cable between the columns can be expanded and contracted as the boarding bridge is extended and contracted, and it is always kept taut, which is beneficial to ensuring the safety of personnel working on the top of the boarding bridge.

[0071] In this embodiment, the third and fourth rope winding guides 711 and 712 are detachably mounted inside the first column 51; the first middle pulley 721, the second middle pulley 722, the third middle pulley 723, the fourth middle pulley 724, and the fifth middle pulley 725 are detachably mounted inside the second column 52; and the first and second rope winding guides 731, 732, the first rear pulley 733, the second rear pulley 734, the third rear pulley 735, and the fifth rope winding guide 736 are detachably mounted inside the third column 53. This design provides a certain degree of rain protection, preventing iron pulleys, bearings, and other components from rusting due to rain.

[0072] Reference Figure 11 The first column 51 is fixedly arranged at the rear end of the top of the rear channel 3, and the backward protection rope 42 passes through the two pulleys of the third rope guide 711 and the fourth rope guide 712 and is led to the second column 52. The openings in the middle and upper parts of the first column 51 are covered with a half cover 511.

[0073] Reference Figure 12 The third column 53 tube needs to be equipped with parallel double pulleys and single pulleys according to the rope arrangement. This allows the steel cables to extend into the inter-channel mezzanine or to be led to the front of the boarding bridge through the parallel channel, forming two protective steel cables. The pulleys are specifically arranged as follows: the first rear pulley 733 and the second rope winding guide 732 are coaxially arranged at the top of the third column 53, the first rope winding guide 731 and the fifth rope winding guide 736 are arranged one above the other in the middle of the third column 53, and the second rear pulley 734 and the third rear pulley 735 are coaxially arranged at the bottom of the third column 53.

[0074] Reference Figure 9 The design inside the second column 52 is similar to that of the third column 53. It is also necessary to set parallel double pulleys and single pulleys inside according to the direction of the rope arrangement to meet the requirements of the steel cable extending to the mezzanine between the channels or leading the parallel channel to the front of the boarding bridge, forming two protective steel cables.

[0075] Reference Figure 13The tether assembly 6 is a double-rope-end fixing assembly fixed to the front end of the top of the rear channel 3. The convex hinged seat 61 of the double-rope-end fixing assembly is welded or bolted to the top surface of the front end of the rear channel 3. The backward safety rope 42 and the forward safety rope 41 are connected from this convex hinged seat to the entire rope arrangement and protection system. A pin 63 connects the cable connector 64, the cable ring 62, and the convex hinged seat 61 in series. The cable connector 64 ensures that the spacing between the two cables matches the spacing of the parallel dual pulley cable grooves at the bottom of the column. The freedom of rotation of the cable connector 64 around its axis allows the cables to be guided tangentially into the pulley grooves.

[0076] Reference Figure 14 The eight-piece reverse traction pulley assembly is a double pulley assembly fixed to the top surface of the front end of the middle channel 2, through which the reverse protection rope 42 passes. Its components are shown in the figure above. The pulley seat 81 is connected to the convex hinge seat 61 in an articulated manner, ensuring that the back-and-forth cable can coincide with the reverse pulley 82 along the tangent direction of the pulley groove. One of the double pulleys 82 reverses the cable direction, while the other adjusts the cable spacing to ensure that the cables are guided parallel to each other. A three-pulley assembly can also be used, with one for reversing and two for adjusting the cable spacing in parallel, thus creating a symmetrical structure.

[0077] Reference Figure 15 The fourth column 54 is set at the front of the top surface of the front channel. Here are the two tail parts of the forward protection rope 41 and the backward protection rope 42, which are composed of several parts that complete the steel cable tightening function and the steel cable status detection function. The connector 91 or the quick tensioner 92 connects the tail end of the steel cable, the tension regulator 93 adjusts the tension of the steel cable, and the monitoring sensor 94 is responsible for detecting the status of the steel cable to ensure the reliability and safety of the loss-of-control protection mechanism of the middle channel 2. The monitoring sensor 94 is used to automatically detect and diagnose the cable status, and timely repairs can be made if any problems are found. Such a multiple protection system has high reliability and high safety performance, which fully prevents the occurrence of loss-of-control slippage in the middle channel 2.

[0078] Example 2

[0079] Figure 5 Embodiment 2 of the present invention is shown. This embodiment has a similar structure to Embodiment 1, but differs in the following two points: First, in this embodiment, the third rope winding guide 711 and the fourth rope winding guide 712 are both rope winding pulleys fixed to the first column 51, and the first rope winding guide 731 and the fifth rope winding guide 736 are both semi-cylindrical rope winding blocks fixed to the third column 53. This substitution is made because when the boarding bridge is in operation, the steel cable is relatively fixed to the first rope winding guide 731 and the second rope winding guide 732, and the steel cable is also relatively fixed to the third rope winding guide 711 and the fourth rope winding guide 712, which will not cause wear on the steel cable.

[0080] Example 3

[0081] Figure 6 Embodiment 3 of the present invention is shown. In this embodiment, the forward traction pulley group includes a first middle pulley 721 arranged at the lower part of the second column 52, and a second middle pulley 722 arranged at the middle part of the second column 52; the forward guide structure includes a first rope guide 731 arranged in the middle part of the third column 53; one end of the forward protection rope 41 is fixedly connected to the tie rope member 6, and the other end passes through the first middle pulley 721, the second middle pulley 722, the first rope guide 731 in sequence and is fixedly connected to the middle part of the fourth column 54.

[0082] The first backward guide structure includes a third rope winding guide 711 disposed in the middle of the first column 51 and a fourth rope winding guide 712 disposed on the upper portion of the first column 51 .

[0083] The second backward guide structure includes a third middle pulley 723 provided at the lower portion of the second column 52 , a fourth middle pulley 724 provided at the middle portion of the second column 52 , and a fifth middle pulley 725 provided at the upper portion of the second column 52 .

[0084] The third backward guide structure includes a first rear pulley 733 arranged on the upper part of the third column 53, a second rear pulley 734 arranged on the lower part of the third column 53, a third rear pulley 735 arranged on the lower part of the third column 53, and a fifth rope guide 736 arranged on the upper part of the third column 53.

[0085] The backward traction pulley assembly 8 includes a pulley seat 81 fixed to the central channel and a backward pulley 82 rotatably mounted on the pulley seat 81. One end of the backward protection rope 42 is fixedly connected to the tether member 6, and the other end is sequentially passed through the third central pulley 723, the fourth central pulley 724, the third rope winding guide 711, the fourth rope winding guide 712, the fifth central pulley 725, the first rear pulley 733, the second rear pulley 734, the backward pulley 82, the third rear pulley 735, the fifth rope winding guide 736, and is connected to the upper portion of the fourth column 54.

[0086] In this embodiment, the first and fifth rope winding guides 731 and 736 are pulleys hinged on the third column 53, and the third and fourth rope winding guides 711 and 712 are pulleys hinged on the first column 51. Compared with Embodiments 1 and 2, this type of rope arrangement simplifies the cable routing.

[0087] The above are only preferred embodiments of the present invention and are not intended to limit the patent scope of the present invention. All equivalent structural transformations made based on the contents of the present invention's description and drawings, or directly or indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A boarding bridge with a telescopic cable guardrail and an intermediate channel out-of-control protection function, comprising a boarding bridge body, wherein the boarding bridge body comprises a front channel (1), an intermediate channel (2) capable of being retracted into the front channel (1), and a rear channel (3) capable of being retracted into the intermediate channel (2), and the boarding bridge body is provided with at least one set of traction linkage mechanisms (12) capable of linking the front channel (1) and the intermediate channel (2), characterized in that: The top of the boarding bridge body is also provided with a cable-type telescopic guardrail capable of linking the front passage (1) and the middle passage (2); The cable-type telescopic guardrail comprises a forward protection rope (41), a backward protection rope (42), a first column (51) arranged at the rear end of the rear channel (3), a second column (52) arranged at the rear end of the middle channel (2), a third column (53) arranged at the rear end of the front channel (1), and a fourth column (54) arranged on the front channel (1) and located in front of the third column (53); The front end of the rear channel (3) is provided with a tie member (6) housed in the middle channel (2) and located in front of the second column (52); the second column (52) is provided with a forward traction pulley group; the forward protection rope (41) passes around the forward traction pulley group; the tie member (6) and the fourth column (54) are respectively fixedly connected to the two ends of the forward protection rope (41); the third column (53) is provided with a forward guide structure capable of cooperating with the forward protection rope (41); The front end of the middle channel (2) is provided with a backward traction pulley group (8) accommodated in the front channel (1) and located behind the third column (53); the first column (51) is provided with a first backward guide structure; the second column (52) is provided with a second backward guide structure; the third column (53) is provided with a third backward guide structure; one end of the backward protection rope (42) is fixedly connected to the tie rope member (6); the other end of the backward protection rope (42) passes through the second backward guide structure, the first backward guide structure, the second backward guide structure, the third backward guide structure, the backward traction pulley group (8), the third backward guide structure and is fixedly connected to the third column (53).

2. The boarding bridge with telescopic cable guardrail and middle channel failure protection function according to claim 1, characterized in that: The forward traction pulley assembly comprises a first middle pulley (721) arranged at the lower part of the second column (52), and a second middle pulley (722) arranged at the middle part of the second column (52); The forward guide structure comprises a first rope winding guide member (731) arranged in the middle of the third column (53) and a second rope winding guide member (732) arranged in the upper part of the third column (53); One end of the forward protection rope (41) is fixedly connected to the tether member (6), and the other end is passed through the first middle pulley (721), the second middle pulley (722), the first rope guide (731), the second rope guide (732) in sequence and is fixedly connected to the upper part of the fourth column (54).

3. The boarding bridge with telescopic cable guardrail and middle channel failure protection function according to claim 2, characterized in that: The first backward guide structure comprises a third rope winding guide (711) arranged in the middle of the first column (51), and a fourth rope winding guide (712) arranged in the upper part of the first column (51); The second backward guide structure comprises a third middle pulley (723) arranged at the lower part of the second column (52), a fourth middle pulley (724) arranged at the middle part of the second column (52), and a fifth middle pulley (725) arranged at the upper part of the second column (52); The third backward guide structure includes a first rear pulley (733) provided on the upper portion of the third column (53), a second rear pulley (734) provided on the lower portion of the third column (53), a third rear pulley (735) provided on the lower portion of the third column (53), and a fifth rope winding guide (736) provided on the middle portion of the third column (53); The backward traction pulley assembly (8) comprises a pulley seat (81) fixed on the middle channel and a backward pulley (82) rotatably arranged on the pulley seat (81); One end of the retreat protection rope (42) is fixedly connected to the tether member (6), and the other end is passed through the third middle pulley (723), the fourth middle pulley (724), the third rope winding guide (711), the fourth rope winding guide (712), the fifth middle pulley (725), the first rear pulley (733), the second rear pulley (734), the retreat pulley (82), the third rear pulley (735), the fifth rope winding guide (736) in sequence and is connected to the middle of the fourth column (54).

4. The boarding bridge with telescopic cable guardrail and middle channel failure protection function according to claim 3, characterized in that: The first rope winding guide (731) and the second rope winding guide (732) are both pulleys hinged on the third column (53); the third rope winding guide (711) and the fourth rope winding guide (712) are both pulleys hinged on the first column (51).

5. The boarding bridge with telescopic cable guardrail and middle channel failure protection function according to claim 4, characterized in that: The third rope winding guide (711) and the fourth rope winding guide (712) are both detachably mounted inside the first column (51); The first middle pulley (721), the second middle pulley (722), the third middle pulley (723), the fourth middle pulley (724), and the fifth middle pulley (725) are all detachably mounted inside the second column (52); The first rope winding guide (731), the second rope winding guide (732), the first rear pulley (733), the second rear pulley (734), the third rear pulley (735) and the fifth rope winding guide (736) are all detachably mounted inside the third column (53).

6. The boarding bridge with telescopic cable guardrail and middle channel failure protection function according to claim 3, characterized in that: The third rope winding guide (711) and the fourth rope winding guide (712) are both rope winding wheels fixed on the first column (51), and the first rope winding guide (731) and the fifth rope winding guide (736) are both semi-cylindrical rope winding blocks fixed on the third column (53).

7. The boarding bridge with telescopic cable guardrail and middle channel failure protection function according to claim 1, characterized in that: The forward traction pulley assembly comprises a first middle pulley (721) arranged at the lower part of the second column (52), and a second middle pulley (722) arranged at the middle part of the second column (52); The forward guide structure comprises a first rope guide (731) arranged in the middle of the third column (53); One end of the forward protection rope (41) is fixedly connected to the tether member (6), and the other end is passed through the first middle pulley (721), the second middle pulley (722), the first rope guide (731) in sequence and is fixedly connected to the middle of the fourth column (54).

8. The boarding bridge with telescopic cable guardrail and middle channel failure protection function according to claim 7, characterized in that: The first backward guide structure comprises a third rope winding guide (711) arranged in the middle of the first column (51), and a fourth rope winding guide (712) arranged in the upper part of the first column (51); The second backward guide structure comprises a third middle pulley (723) arranged at the lower part of the second column (52), a fourth middle pulley (724) arranged at the middle part of the second column (52), and a fifth middle pulley (725) arranged at the upper part of the second column (52); The third backward guide structure includes a first rear pulley (733) provided on the upper portion of the third column (53), a second rear pulley (734) provided on the lower portion of the third column (53), a third rear pulley (735) provided on the lower portion of the third column (53), and a fifth rope winding guide (736) provided on the upper portion of the third column (53); The backward traction pulley assembly (8) comprises a pulley seat (81) fixed on the middle channel and a backward pulley (82) rotatably arranged on the pulley seat (81); One end of the retreat protection rope (42) is fixedly connected to the tether member (6), and the other end is passed through the third middle pulley (723), the fourth middle pulley (724), the third rope winding guide member (711), the fourth rope winding guide member (712), the fifth middle pulley (725), the first rear pulley (733), the second rear pulley (734), the retreat pulley (82), the third rear pulley (735), the fifth rope winding guide member (736) in sequence and is connected to the upper part of the fourth column (54).

9. The boarding bridge with telescopic cable guardrail and middle channel failure protection function according to claim 1, characterized in that: One end of the forward protection rope (41) connected to the fourth fixed column is provided with a tension regulator (93), and one end of the backward protection rope (42) connected to the fourth fixed column is provided with a tension regulator (93). The fourth fixed column is provided with a monitoring sensor (94) capable of monitoring the state of the forward protection rope (41) and a monitoring sensor (94) capable of monitoring the state of the backward protection rope (42).

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