A passenger bridge maintenance channel protection system

Abstract

The present invention discloses a passenger bridge maintenance passage protection system, comprising a fixed nacelle at the rear of the bridge, a bridge body corridor, a bridge head nacelle, and an aircraft receiving port. The system also includes a guardrail device and a protective ladder device. The guardrail device includes a rear guardrail assembly, a bridge body guardrail assembly, and a bridge head guardrail assembly. The protective ladder device includes a climbing ladder assembly and a maintenance ladder assembly. The maintenance ladder assembly, the climbing ladder assembly, the bridge head guardrail assembly, the bridge body guardrail assembly, and the rear guardrail assembly form a passage that is interconnected. When the bridge body corridor rotates, the rear guardrail assembly and the bridge head guardrail assembly rotate together with the bridge body corridor. The present invention has the advantages of being unaffected by interference from moving parts, having a relatively simple structure, low cost, and being easy to use.

Description

Technical Field

[0001] The present invention relates to the technical field of passenger bridge maintenance and protection devices, and in particular to a passenger bridge maintenance channel protection system. Background Art

[0002] The top of an aerobridge (also known as a passenger bridge or arrival bridge) is a certain distance from the ground. According to the national standard GB / T 3608-2008, "Classification of Work at Height," "Any work performed at a height above a reference height of 2 meters (inclusive) or higher, where there is a risk of falling, is considered work at height." Performing maintenance on such a bridge poses a safety risk, especially in rainy or snowy weather. Therefore, during the discussion of the 2016 version of the passenger boarding bridge standard, airport representatives attending the meeting strongly requested the addition of a guardrail on the top of the boarding bridge. However, the boarding bridge manufacturers present at the time disagreed. This is because the passenger bridge's structure, which is located close to the aircraft approaching the docking passage, requires telescopic movement, horizontal swinging, and bow elevation. To ensure the arrival gate aligns with the aircraft's cabin door, the rear revolving hall and the front arrival gate must be able to rotate. The limitations of one telescopic structure and two rotating components hindered the installation of safety guardrails. Therefore, installing a guardrail at the top of the boarding area is difficult due to structural limitations that prevent conventional guardrails from being implemented. As a result, passenger bridge manufacturers at home and abroad only install a safety guardrail at the top of the outer passage (external corridor) of the passenger bridge, which is not affected by moving parts. This is far from meeting the safety protection requirements.

[0003] The retractable bridge body includes an outer passage (outer gallery) and an inner passage (inner gallery) that can be extended into the outer passage. Currently, manufacturers in Japan, Europe, and China generally use the simplest safety belt fixing device at the top of the inner passage: a steel cable or round steel bar is laid on the top of the inner passage to hang the safety buckle. This is also the traditional practice of various manufacturers. However, this solution is not convenient because the safety buckle is hung at a low position and the protective passage is discontinuous. If a person slips, it can be quite frightening. Although they will not fall to the ground, they may be affected by the impact during the fall, which can cause physical and psychological damage. Therefore, users hope for a better solution. Although domestic and foreign passenger bridge manufacturers have developed a safety protection system with a high-hanging safety belt, such as CN114919767A, this design uses a cable retraction and deployment device to synchronize the passage extension and retraction and adapt to the movement of the passage. However, this method is too expensive and the cables are not durable, so it has not been widely used.

[0004] The revolving hall at the rear of the passenger bridge and the round hall at the head of the passenger bridge contain rotating moving parts. No manufacturer has ever installed a fall protection system for these two locations, nor are there any related designs. However, the round halls at the head and rear of the bridge are typically equipped with air conditioning and angle sensors for rotation angle monitoring. Furthermore, there is a push for automated passenger bridges, with image, recognition, and distance sensors installed on the top of the bridge. This will increase the number of maintenance work points on the top of the passenger bridge. Therefore, a protection system is urgently needed for the revolving hall at the rear of the passenger bridge and the round hall at the head of the passenger bridge.

[0005] Nowadays, safe production is the focus of airport management and the most fundamental guarantee for development. High-altitude safety is particularly important. In order to ensure the personal safety of workers, it is of positive significance to study the high-altitude safety protection and fall prevention forms of passenger bridges and develop a fully covered and perfect passive bridge top anti-fall protection guardrail system for passenger bridges.

[0006] The present invention is made based on this situation. Summary of the Invention

[0007] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a passenger bridge maintenance channel protection system that is not affected by interference from moving parts, has a relatively simple structure, is low in cost, and is easy to use.

[0008] The present invention is achieved through the following technical solutions:

[0009] In order to solve the above technical problems, the present invention provides a passenger bridge maintenance channel protection system, including a fixed round hall at the end of the bridge, a bridge body corridor that can rotate around the fixed round hall at the end of the bridge and can be extended and retracted forward and backward, a round hall at the head of the bridge fixed at the front end of the bridge body corridor and can be raised and lowered, a receiving port that can rotate around the round hall at the head of the bridge, and also includes a guardrail device and a protective ladder device. The guardrail device includes a bridge tail guardrail assembly arranged above the periphery of the top surface of the fixed round hall at the end of the bridge, and a left and right side edge of the top surface of the bridge body corridor that can be extended and retracted with the bridge body corridor. A bridge guardrail assembly, and a bridge head guardrail assembly arranged above the top periphery of the bridge head round hall, the protective ladder device includes a ladder assembly arranged on one side of the bridge head round hall and capable of being raised and lowered with the bridge head round hall, and a maintenance ladder assembly rotatably connected to the lower end of the ladder assembly; the passage formed by the maintenance ladder assembly, the ladder assembly, the bridge head guardrail assembly, the bridge body guardrail assembly and the bridge tail guardrail assembly is connected; and when the bridge body corridor rotates, the bridge tail guardrail assembly and the bridge head guardrail assembly both rotate together with the bridge body corridor.

[0010] In order to further solve the technical problems to be solved by the present invention, the present invention provides a passenger bridge maintenance channel protection system, wherein a rotating frame that can rotate around the central axis of the fixed circular hall at the end of the bridge is provided between the fixed circular hall at the end of the bridge and the rear end of the bridge body gallery, and the rotating frame is fixed to the rear end of the bridge body gallery and rotatably connected to the side of the fixed circular hall at the end of the bridge; the bridge tail guardrail assembly includes first fixed columns fixed on the left and right sides of the rotating frame, and the upper parts of the two first fixed columns are fixedly connected to the bridge tail fence arranged around the top surface of the fixed circular hall at the end of the bridge, and the opening of the bridge tail fence is provided between the two first fixed columns, and a number of first movable columns supported between the rear part of the bridge tail fence and the top surface of the fixed circular hall at the end of the bridge are provided.

[0011] In order to further solve the technical problem to be solved by the present invention, the present invention provides a passenger bridge maintenance channel protection system, in which the lower end of the first movable column is fixed on the top surface of the fixed circular hall at the end of the bridge, and a first rolling connection structure or a first sliding connection structure is provided between the upper end of the first movable column and the fence at the end of the bridge.

[0012] In order to further solve the technical problem to be solved by the present invention, the present invention provides a passenger bridge maintenance channel protection system, wherein the upper end of the first movable column is fixed on the bridge tail fence, and a first rolling connection structure or a first sliding connection structure is provided between the lower end of the first movable column and the top surface of the fixed circular hall at the bridge tail.

[0013] In order to further solve the technical problem to be solved by the present invention, the present invention provides a passenger bridge maintenance channel protection system, wherein the bridge body corridor includes a fixed corridor and a movable corridor that can be retracted into the fixed corridor, and the bridge body guardrail assembly includes a fixed fence assembly fixed on the left and right sides of the top surface of the fixed corridor, and a movable fence assembly provided above the left and right sides of the top surface of the movable corridor, and the front part of the movable fence assembly is suspended on the top surface of the movable corridor and can be retracted into the fixed fence assembly.

[0014] In order to further solve the technical problem to be solved by the present invention, the present invention provides a passenger bridge maintenance channel protection system, wherein the fixed railing assembly includes an outer railing and a second fixed column for fixedly connecting the outer railing and the top surface of the fixed corridor body, and the movable railing assembly includes a third fixed column fixed to the rear end of the movable corridor body, and an inner railing arranged on the upper part of the third fixed column and suspended above the movable corridor body, and a second rolling connection structure or a second sliding connection structure is provided between the front end of the inner railing and the outer railing, and between the rear end of the outer railing and the inner railing.

[0015] In order to further solve the technical problems to be solved by the present invention, the present invention provides a passenger bridge maintenance channel protection system, wherein a pull rod assembly connecting the top surface of the bridge head round hall and the top of the receiving port is provided between the two, and the rear end of the pull rod assembly is rotatably connected to the center of the top surface of the bridge head round hall, and the front end of the pull rod assembly is fixed to the top of the receiving port, and the bridge head guardrail assembly includes fourth fixed columns fixed on the left and right sides of the rear end of the top surface of the bridge head round hall, and a bridge head fence provided on the upper part of the two fourth fixed columns and suspended above the pull rod assembly, and the opening of the bridge head fence is provided between the two fourth fixed columns, and a second movable column is fixedly connected to the pull rod assembly or the receiving port, and the upper end of the second movable column always supports the bridge head fence.

[0016] In order to further solve the technical problem to be solved by the present invention, in a passenger bridge maintenance channel protection system provided by the present invention, a third rolling connection structure or a third sliding connection structure is provided between the upper end of the second movable column and the bridge head fence.

[0017] In order to further solve the technical problem to be solved by the present invention, the present invention provides a passenger bridge maintenance channel protection system, wherein the lower end of the second movable column is provided with a wheeled trolley that can move on the top surface of the bridge head round hall.

[0018] In order to further solve the technical problem to be solved by the present invention, the present invention provides a passenger bridge maintenance channel protection system, wherein the pull rod assembly includes at least two arms, the front end of each arm is fixed at intervals on the receiving port, and the second movable columns are respectively fixed on the corresponding arms.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] In the present invention, the rear guardrail assembly and the fore guardrail assembly are both circumferentially fixed relative to the bridge corridor. Therefore, no matter how the bridge corridor rotates, the openings of the rear guardrail assembly and the fore guardrail assembly are always opposite to the bridge guardrail assembly, which can avoid the influence of the rotation of the bridge corridor and the terminal. The bridge guardrail assembly can expand and contract with the bridge corridor. Therefore, no matter how the bridge corridor expands and contracts, the bridge guardrail assembly is always above the bridge corridor, always playing a protective role, and can avoid the influence of the expansion and contraction of the bridge corridor. Moreover, the fore guardrail assembly, the bridge guardrail assembly, and the rear guardrail assembly are all guardrail structures with a certain height, good protection, and relatively low production cost, and do not require any active drive structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0023] Figure 2 It is a top view of the present invention;

[0024] Figure 3 It is a schematic diagram of the structure of the guardrail device and the protective ladder device;

[0025] Figure 4 This is a schematic diagram of the structure of the bridge tail guardrail assembly;

[0026] Figure 5 This is one of the schematic diagrams of the first movable column;

[0027] Figure 6 This is the second schematic diagram of the first movable column;

[0028] Figure 7 It is a schematic diagram of the structure of the bridge guardrail assembly;

[0029] Figure 8 yes Figure 7 A partial enlarged view of point A in the middle;

[0030] Figure 9 yes Figure 8 The cross-sectional view at CC in the middle is also one of the schematic diagrams of the connection between the inner railing and the outer railing;

[0031] Figure 10 This is the second schematic diagram of the connection between the inner railing and the outer railing;

[0032] Figure 11 This is one of the structural diagrams of the bridge head guardrail assembly;

[0033] Figure 12 This is a side view of the bridge head guardrail assembly;

[0034] Figure 13 This is one of the structural diagrams of the tie rod assembly;

[0035] Figure 14 This is one of the structural diagrams of the third rolling connection structure;

[0036] Figure 15 This is the second structural diagram of the third rolling connection structure;

[0037] Figure 16 1 is a structural diagram of the third rolling connection structure;

[0038] Figure 17 This is the second structural diagram of the bridge head guardrail assembly;

[0039] Figure 18 This is the second structural diagram of the tie rod assembly;

[0040] Figure 19 It is a structural diagram of a wheeled trolley. DETAILED DESCRIPTION

[0041] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0042] like Figures 1 to 19 The maintenance channel protection system of a passenger bridge shown in the figure comprises a fixed rotunda 1 at the rear of the bridge, a bridge body corridor 2 that can rotate around the fixed rotunda 1 at the rear of the bridge and can be extended and retracted forward and backward, a rotunda 3 fixed to the front end of the bridge body corridor 2 and can be raised and lowered, and an airport reception port 4 that can rotate around the rotunda 3 at the front of the bridge. The fixed rotunda 1 at the rear of the bridge is fixed on the ground and connected to the terminal hall. In order to get closer to the aircraft cabin door, a motion drive device (the motion drive device includes a motor, steerable wheels, and a lifting drive device) is provided under the rotunda 3 at the front of the bridge. The motion drive device can drive the rotunda 3 at the front of the bridge to rise and fall and move forward and backward, and at the same time, it also drives the bridge body corridor 2 to extend and retract forward and backward and rotate around the fixed rotunda 1 at the rear of the bridge.

[0043] The passenger bridge maintenance channel protection system also includes a guardrail device and a protective ladder device.

[0044] The protective ladder system includes a ladder assembly 8, which is located on one side of the bridge rotunda 3 and can be raised and lowered with the bridge rotunda 3, and a maintenance ladder assembly 9, which is rotatably connected to the lower end of the ladder assembly 8. (The ladder assembly 8 and the maintenance ladder assembly 9 are generally located near the bridge rotunda 3 to facilitate entry and exit.) The maintenance ladder assembly 9 is an inclined ladder, while the ladder assembly 8 is a vertical ladder. Maintenance personnel first step onto the maintenance ladder assembly 9 and then climb up the ladder assembly 8 to reach the top surface of the bridge rotunda 3.

[0045] The guardrail device includes a bridge tail guardrail assembly 5 provided above the periphery of the top surface of the fixed rotunda 1 at the bridge tail, a bridge body guardrail assembly 6 provided on the left and right sides of the top surface of the bridge body gallery 2 and capable of extending and retracting with the bridge body gallery 2, and a bridge head guardrail assembly 7 provided above the periphery of the top surface of the bridge head rotunda 3. The passage formed by the maintenance ladder assembly 9, the climbing ladder assembly 8, the bridge head guardrail assembly 7, the bridge body guardrail assembly 6 and the bridge tail guardrail assembly 5 is interconnected; when the bridge body gallery 2 rotates, the bridge tail guardrail assembly 5 and the bridge head guardrail assembly 7 rotate together with the bridge body gallery 2. That is, the bridge tail guardrail assembly 5 and the bridge head guardrail assembly 7 are both circumferentially fixed relative to the bridge body gallery 2. As Figure 1-Figure 3As shown, the rear guardrail assembly 5 and the fore guardrail assembly 7 are both circumferentially fixed relative to the bridge body corridor 2. Therefore, no matter how the bridge body corridor 2 rotates, the rear guardrail assembly 5 and the fore guardrail assembly 7 rotate together with the bridge body corridor 2. That is, the opening of the rear guardrail assembly 5 and the opening of the fore guardrail assembly 7 are always opposite to the bridge body guardrail assembly 6, which can avoid the influence of the rotation of the bridge body corridor 2 and the connecting port 4. The bridge body guardrail assembly 6 can expand and contract with the bridge body corridor 2. Therefore, no matter how the bridge body corridor 2 expands and contracts, the bridge body guardrail assembly 6 is always above the bridge body corridor 2, always playing a protective role, and can avoid the influence of the expansion and contraction of the bridge body corridor 2. Moreover, the fore guardrail assembly 7, the bridge body guardrail assembly 6 and the rear guardrail assembly 5 are all guardrail structures with a certain height, good protection, and relatively low production cost. They also do not require any active drive structure, which will be described in detail below.

[0046] The details of the bridge tail guardrail assembly 5 are as follows:

[0047] like Figure 1 、 2 As shown in Figures 4 and 5, a rotating frame 21 capable of rotating around the central axis of the fixed rotunda 1 is provided between the rear end of the fixed rotunda 1 and the bridge body gallery 2. The rotating frame 21 is fixed to the rear end of the bridge body gallery 2 and is rotatably connected to the side of the fixed rotunda 1 (the center of rotation is the central axis of the fixed rotunda 1). The bridge tail guardrail assembly 5 includes first fixed columns 51 fixed to the left and right sides of the rotating frame 21. The upper parts of the two first fixed columns 51 are fixedly connected to a bridge tail fence 52 arranged around the top surface of the fixed rotunda 1, and the opening of the bridge tail fence 52 is provided between the two first fixed columns 51. A plurality of first movable columns 53 supported between the rear part of the bridge tail fence 52 and the top surface of the fixed rotunda 1 are provided. That is, the front end of the bridge tail fence 52 is fixed on the rotating frame 21, and the rear part of the bridge tail fence 52 is suspended on the top surface of the fixed circular hall 1 at the bridge tail, and a first movable column 53 is provided between the two. One end of the first movable column 53 is fixedly connected to one of the bridge tail fence 52 and the top surface of the fixed circular hall 1 at the bridge tail, and the other end is rollingly connected or slidingly connected to the other of the two. Even if the bridge tail fence 52 rotates with the rotating frame 21, the first movable column 53 can still always support the suspended part of the bridge tail fence 52, and transmit the force to the top surface of the fixed circular hall 1 at the bridge tail, thereby ensuring the structural strength of the bridge tail fence 52 and preventing it from deformation.

[0048] Preferably, the bridge tail fence 52 has two upper and lower opposite fences, and the two bridge tail fences 52 are connected together by a plurality of connecting rods to increase the protection area and enhance the structural strength. Of course, the first movable column 53 is provided between the lowermost bridge tail fence 52 and the top surface of the fixed round hall 1 at the bridge tail.

[0049] Preferably, Figure 4As shown, an A-shaped frame 55 is provided between the rotating frame 21 and the fixed rotunda 1 at the aft end of the bridge. One end of the A-shaped frame 55 is fixed to the rotating frame 21, and the other end of the A-shaped frame 55 is rotatably connected to the center of the top surface of the fixed rotunda 1 at the aft end of the bridge. The first movable column 53 can be fixed to the rotating frame 21 or to the A-shaped frame 55 (when fixed to the A-shaped frame 55, the radius of the aft end of the bridge fence 52 can be appropriately changed).

[0050] Since one end of the first movable column 53 is fixed to one of the rear part of the bridge tail fence 52 and the top surface of the fixed rotunda 1 at the bridge tail, and the other end of the first movable column 53 is movably connected to the other of the two through a rolling connection structure or a sliding connection structure, although the rear part of the bridge tail fence 52 and the fixed rotunda 1 at the bridge tail will move relative to each other, the first movable column 53 can still support the suspended part of the bridge tail fence 52 (the rear part of the bridge tail fence 52), thereby improving the structural strength of the bridge tail fence 52 and preventing the bridge tail fence 52 from deformation.

[0051] Example 1:

[0052] like Figure 4 、 Figure 5 What is shown is embodiment 1 of the present invention. In this embodiment, the lower end of the first movable column 53 is fixed on the top surface of the fixed circular hall 1 at the end of the bridge, and a first rolling connection structure 54 or a first sliding connection structure (not shown in the figure) is provided between the upper end of the first movable column 53 and the end of the bridge fence 52.

[0053] More specifically, Figure 5 As shown, the first rolling connection structure 54 includes a roller rotatably connected to the upper end of the first movable column 53, and the surface of the roller is rollingly connected to the surface of the bridge tail fence 52. Preferably, the surface of the roller is provided with a limiting groove that can adapt to the bridge tail fence 52 (the outer wall of the limiting groove is higher or both the inner and outer walls are higher, and the middle is concave, and the bridge tail fence 52 is placed in the concave). In this way, the bridge tail fence 52 can be limited to deform downward and support the bridge tail fence 52, and it can also limit the bridge tail fence 52 from detaching (deforming inward or outward). Furthermore, the roller can be in a U-shape, a V-shape, an H-shape, or the like.

[0054] In another scheme, the cross-section of the bridge tail fence 52 can also be set to be C-shaped, and the first rolling connection structure 54 is set to be a roller rotatably connected to the upper end of the first movable column 53, and the roller is rollingly connected in the inner cavity of the bridge tail fence 52, so that axial limitation can be achieved to prevent the bridge tail fence 52 from circumferential deformation downward, inward, outward, etc.

[0055] In another scheme, the first sliding connection structure means that the upper end of the movable column 53 is directly slidably connected to the bridge tail fence 52 through a slider (not shown in the figure, the slider can be slidably connected to the outer surface or inner cavity of the bridge tail fence 52. If the slider is slidably connected to the inner cavity of the bridge tail fence 52, the cross-section of the bridge tail fence 52 should be C-shaped), but this structure is relatively prone to wear.

[0056] Example 2:

[0057] like Figure 6 What is shown is the second embodiment of the present invention, which is different from the above-mentioned first embodiment in that: in this embodiment, the upper end of the first movable column 53 is fixed on the bridge tail fence 52, and a first rolling connection structure 54 or a first sliding connection structure is provided between the lower end of the first movable column 53 and the top surface of the fixed circular hall 1 at the bridge tail.

[0058] More specifically, Figure 6 As shown, the first rolling connection structure 54 is a roller or a ball rotatably connected to the lower end of the first movable column 53, and the roller or the ball is in contact with the top surface of the fixed circular hall 1 at the end of the bridge.

[0059] In another solution, the first sliding connection structure (not shown in the figure) is a slider fixed to the lower end of the first movable column 53, and a guide rail arranged on the top surface of the fixed circular hall 1 at the end of the bridge, and the slider is fitted on the guide rail to slide.

[0060] The details of the bridge guardrail assembly 6 are as follows:

[0061] like Figure 7-10 As shown, the bridge body gallery 2 includes a fixed gallery 22 and a movable gallery 23 that can be retracted into the fixed gallery 22, and the bridge body guardrail assembly 6 includes a fixed fence assembly 61 fixed on the left and right sides of the top surface of the fixed gallery 22, and a movable fence assembly 62 provided above the left and right sides of the top surface of the movable gallery 23, and the front part of the movable fence assembly 62 is suspended on the top surface of the movable gallery 23 and can be retracted into the fixed fence assembly 61.

[0062] More specifically, the fixed railing assembly 61 includes an outer railing 611 and a second fixed column 612 for fixing the outer railing 611 to the top surface of the fixed gallery body 22. The movable railing assembly 62 includes a third fixed column 621 fixed to the rear end of the movable gallery body 23, and an inner railing 622 provided on the upper part of the third fixed column 621 and suspended above the movable gallery body 23. There is a gap between the front end of the inner railing 622 and the outer railing 611 ( Figure 7 A in the middle), and between the rear end of the outer railing 611 and the inner railing 622 ( Figure 7 A second rolling connection structure 63 or a second sliding connection structure 64 is provided at point B in the middle.

[0063] In the present invention, the inner railing 622 is suspended above the movable gallery 23, so the extension and retraction of the movable gallery 23 does not affect the inner railing 622. To support the suspended portion of the inner railing 622, the present invention connects the front end of the inner railing 622 to the outer railing 611, and the rear end of the outer railing 611 to the inner railing 622. This relies on the outer railing 611 to support the inner railing 622, thereby enhancing the structural strength of the inner railing 622. The second rolling connection structure 63 or second sliding connection structure 64 used at the connection allows the inner railing 622 to extend and retract synchronously along the outer railing 611 as the movable gallery 23 retracts and retracts.

[0064] Preferably, each fixed railing assembly 61 comprises two vertically opposed outer railings 611, both secured to a second fixed post 612. Each movable railing assembly 62 comprises two vertically opposed inner railings 622, connected by a plurality of connecting rods. Of course, a second rolling connection structure 63 or a second sliding connection structure 64 is provided between the upper inner railing 622 and the upper outer railing 611, and a second rolling connection structure 63 or a second sliding connection structure 64 is also provided between the lower inner railing 622 and the lower outer railing 611.

[0065] More specifically, Figure 8 、 Figure 9 As shown, the second rolling connection structure 63 is a roller rotatably connected to the inner railing 622, and the roller is connected to the outer surface of the corresponding outer railing 611 (such as Figure 9 as shown) or lumen (as Figure 10 The roller is preferably shaped to match the cross-sectional shape of the outer railing 611 (e.g., if the cross-sectional shape of the outer railing 611 is circular, the roller is a U-shaped roller; if the cross-sectional shape of the outer railing 611 is square, the roller is a V-shaped roller or an H-shaped roller).

[0066] In another solution, Figure 10 As shown ( Figure 10 The second sliding connection structure 64 includes a slider fixed to the inner railing 622, and the outer railing 611 has a C-shaped cross section. The slider slides in the inner cavity of the outer railing 611. Of course, this sliding fit is suitable for use as a guide due to its high wear. For load-bearing, it is preferred to set up another rolling connection structure (such as Figure 10 As shown, the upper sliding connection structure plays a guiding role, and the lower rolling connection structure plays a load-bearing role).

[0067] The details of the bridge head guardrail assembly 7 are as follows:

[0068] like Figures 11-19As shown, a tie rod assembly 41 is provided between the top surface of the bridgehead rotunda 3 and the top of the receiving port 4, connecting the two. The rear end of the tie rod assembly 41 is rotatably connected to the center of the top surface of the bridgehead rotunda 3, while the front end of the tie rod assembly 41 is fixed to the top of the receiving port 4. In other words, the tie rod assembly 41 is a movable component on the top surface of the bridgehead rotunda 3, and the tie rod assembly 41 must rotate and swing a certain angle on the top surface of the bridgehead rotunda 3, hindering the installation of the guardrail on the top surface of the bridgehead rotunda 3. The bridgehead guardrail assembly 7 of the present invention can overcome this obstacle, as detailed below.

[0069] The bridge guardrail assembly 7 includes fourth fixed columns 71 fixed to the left and right sides of the rear end of the top surface of the bridge head round hall 3, and a bridge head fence 72 provided on the upper part of the two fourth fixed columns 71 and suspended above the tie rod assembly 41. The opening of the bridge head fence 72 is provided between the two fourth fixed columns 71. A second movable column 73 is fixedly connected to the tie rod assembly 41 or the receiving port 4, and the upper end of the second movable column 73 always supports the bridge head fence 72. Since the tie rod assembly 41 will not swing to the rear end of the top surface of the bridge head round hall 3, the rear end of the bridge head fence 72 is directly fixed to the rear end of the top surface of the bridge head round hall 3 through the fourth fixed columns 71. The front end of the bridge head fence 72 is suspended above the tie rod assembly 41, so the front end of the bridge head fence 72 will not be interfered with by the tie rod assembly 41. In order to improve the structural strength of the suspended part of the bridge head fence 72 and avoid its deformation, the present invention uses a second movable column 73. The second movable column 73 is fixed on the pull rod assembly 41 or the receiving port 4, and rotates with the pull rod assembly 41 and the receiving port 4. The upper end of the second movable column 73 always supports the bridge head fence 72 and is slidably or rollingly connected to the bridge head fence 72.

[0070] More specifically, a third rolling connection structure 74 or a third sliding connection structure is provided between the upper end of the second movable column 73 and the bridge head fence 72 .

[0071] More specifically, the third rolling connection structure 74 is a roller or a ball rotatably connected to the upper end of the second movable column 73, and the roller or the ball is connected to the outer surface of the bridge head fence 72 (such as Figure 15 The roller or ball can also be provided in plurality and form a roller group (as shown in FIG. Figure 16 As shown), the roller assembly half surrounds the bridge head fence 72 to provide guidance and multi-directional positioning to prevent the bridge head fence 72 from deforming.

[0072] In another solution, Figure 13 、 Figure 14 As shown, the cross-section of the bridge head fence 72 is C-shaped, and the third rolling connection structure 74 is a roller or a ball rotatably connected to the upper end of the second movable column 73. The roller or the ball is rollingly connected to the inner cavity of the bridge head fence 72 to guide and limit the circumference to prevent the bridge head fence 72 from deformation.

[0073] More specifically, Figure 17-Figure 19 As shown, the lower end of the second movable column 73 is provided with a wheeled trolley 75 that can move on the top surface of the bridge head rotunda 3. The wheeled trolley 75 can not only transfer the gravity borne by the second movable column 73 to the top surface of the bridge head rotunda 3, but also reduce the friction between the second movable column 73 and the top surface of the bridge head rotunda 3, so that the second movable column 73 moves more smoothly.

[0074] Preferably, Figure 19 As shown, the wheels of the wheeled trolley 75 are arranged along an arc with the same curvature as the bridgehead railing 72, or the wheels can be directly tapered rollers, of course, with the same curvature as the bridgehead railing 72. This structure ensures that the wheeled trolley 75 always moves along the rotation center of the tie rod assembly 41, avoiding the radial slip problem that would occur if uncurved rollers rolled around an arc. Alternatively, the wheeled trolley 75 can directly use balls as wheels, which can move in all directions.

[0075] More specifically, the tie rod assembly 41 includes at least two arms 411, the front ends of each arm 411 being fixed to the receiving port 4 at intervals, and the second movable columns 73 being fixed to the corresponding arms 411. This ensures that the two second movable columns 73 always have a movable interval, which is conducive to balanced support of the bridge head fence 72.

[0076] Preferably, the bridgehead fence 72 has two upper and lower opposing fences, and the two bridgehead fences 72 are connected together by a plurality of connecting rods to increase the protection area and enhance the structural strength. Of course, the second movable column 73 is provided between the lowermost bridgehead fence 72 and the top surface of the bridgehead rotunda 3.

[0077] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A passenger bridge maintenance channel protection system, comprising a fixed round hall (1) at the end of the bridge, a bridge body gallery (2) that can rotate around the fixed round hall (1) at the end of the bridge and can be extended and retracted forward and backward, a round hall (3) fixed at the front end of the bridge body gallery (2) and can be raised and lowered, and a receiving port (4) that can rotate around the round hall (3) at the end of the bridge, characterized in that: It also includes a guardrail device and a protective ladder device, wherein the guardrail device includes a bridge tail guardrail assembly (5) arranged above the periphery of the top surface of the fixed round hall (1) at the end of the bridge, a bridge body guardrail assembly (6) arranged on the left and right sides of the top surface of the bridge body gallery (2) and capable of extending and retracting with the bridge body gallery (2), and a bridge head guardrail assembly (7) arranged above the periphery of the top surface of the bridge head round hall (3), and the protective ladder device includes a ladder assembly (8) arranged on one side of the bridge head round hall (3) and capable of rising and falling with the bridge head round hall (3), and a maintenance ladder assembly (9) rotatably connected to the lower end of the ladder assembly (8); the passage formed by the maintenance ladder assembly (9), the ladder assembly (8), the bridge head guardrail assembly (7), the bridge body guardrail assembly (6) and the bridge tail guardrail assembly (5) is connected; and when the bridge body gallery (2) rotates, the bridge tail guardrail assembly (5) and the bridge head guardrail assembly (7) rotate together with the bridge body gallery (2); A rotating frame (21) capable of rotating around the central axis of the fixed rotunda (1) is provided between the rear end of the bridge tail fixed hall (1) and the bridge body gallery (2), and the rotating frame (21) is fixed to the rear end of the bridge body gallery (2) and is rotatably connected to the side of the fixed rotunda (1) at the rear end of the bridge tail; the bridge tail guardrail assembly (5) includes first fixed columns (51) fixed to the left and right sides of the rotating frame (21), the upper parts of the two first fixed columns (51) are fixedly connected to a bridge tail fence (52) arranged around the top surface of the fixed rotunda (1), and the opening of the bridge tail fence (52) is provided between the two first fixed columns (51); a plurality of first movable columns (53) supported between the rear part of the bridge tail fence (52) and the top surface of the fixed rotunda (1); A pull rod assembly (41) is provided between the top surface of the bridge head round hall (3) and the top of the receiving port (4) to connect the two, and the rear end of the pull rod assembly (41) is rotatably connected to the center of the top surface of the bridge head round hall (3), and the front end of the pull rod assembly (41) is fixed to the top of the receiving port (4), characterized in that: the bridge head guardrail assembly (7) includes fourth fixed columns (71) fixed to the left and right sides of the rear end of the top surface of the bridge head round hall (3), and a bridge head fence (72) provided on the upper part of the two fourth fixed columns (71) and suspended above the pull rod assembly (41), and the opening of the bridge head fence (72) is provided between the two fourth fixed columns (71), and a second movable column (73) is fixedly connected to the pull rod assembly (41) or the receiving port (4), and the upper end of the second movable column (73) always supports the bridge head fence (72).

2. A passenger bridge maintenance channel protection system according to claim 1, characterized in that: The lower end of the first movable column (53) is fixed to the top surface of the fixed circular hall (1) at the end of the bridge, and a first rolling connection structure (54) or a first sliding connection structure is provided between the upper end of the first movable column (53) and the end of the bridge fence (52).

3. A passenger bridge maintenance channel protection system according to claim 1, characterized in that: The upper end of the first movable column (53) is fixed on the bridge tail fence (52), and a first rolling connection structure (54) or a first sliding connection structure is provided between the lower end of the first movable column (53) and the top surface of the bridge tail fixed circular hall (1).

4. A passenger bridge maintenance channel protection system according to claim 1, characterized in that: The bridge body gallery (2) includes a fixed gallery (22) and a movable gallery (23) that can be telescoped into the fixed gallery (22); the bridge body guardrail assembly (6) includes a fixed fence assembly (61) fixed to the left and right sides of the top surface of the fixed gallery (22); and a movable fence assembly (62) provided above the left and right sides of the top surface of the movable gallery (23); and the front portion of the movable fence assembly (62) is suspended from the top surface of the movable gallery (23) and can be telescoped into the fixed fence assembly (61).

5. A passenger bridge maintenance channel protection system according to claim 4, characterized in that: The fixed railing assembly (61) includes an outer railing (611) and a second fixed column (612) for fixedly connecting the outer railing (611) and the top surface of the fixed gallery body (22); the movable railing assembly (62) includes a third fixed column (621) fixed to the rear end of the movable gallery body (23); and an inner railing (622) provided on the upper part of the third fixed column (621) and suspended above the movable gallery body (23); a second rolling connection structure (63) or a second sliding connection structure (64) is provided between the front end of the inner railing (622) and the outer railing (611), and between the rear end of the outer railing (611) and the inner railing (622).

6. A passenger bridge maintenance channel protection system according to claim 1, characterized in that: A third rolling connection structure (74) or a third sliding connection structure is provided between the upper end of the second movable column (73) and the bridge head fence (72).

7. The passenger bridge maintenance channel protection system according to claim 1 is characterized by: The lower end of the second movable column (73) is provided with a wheeled trolley (75) that can move on the top surface of the bridge head rotunda (3).

8. The passenger bridge maintenance channel protection system according to claim 1 is characterized by: The pull rod assembly (41) comprises at least two supporting arms (411), the front ends of the supporting arms (411) are fixed on the receiving port (4) at intervals, and the second movable columns (73) are respectively fixed on the corresponding supporting arms (411).

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