A telescopic passenger boarding stair

Abstract

This utility model relates to the field of passenger boarding stairs technology and discloses a telescopic passenger boarding stairs, including a trolley head, a frame fixedly connected to the right side of the trolley head, and a boarding stairs body fixedly connected to the right side of the frame. A positioning structure is provided on the top of the frame, and disassembly and assembly mechanisms are provided on the front and rear sides of the positioning structure. This telescopic passenger boarding stairs, through the positioning mechanism, allows the operator to control the rotation of the threaded shaft by simply starting the drive motor, thus controlling the lifting frame and allowing the locking pin to engage with the top of the ground. This completes the overall positioning of the trolley head, frame, and boarding stairs body, ensuring that the frame will not shift due to human error such as forgetting to engage the handbrake after the trolley head and frame have stopped at the predetermined position. This increases the overall stability of the boarding stairs body during use and improves its safety.

Description

Technical Field

[0001] This utility model relates to the field of passenger boarding stairs technology, specifically a telescopic passenger boarding stairs. Background Technology

[0002] Passenger boarding stairs are important pieces of equipment at airports used to assist passengers in boarding and disembarking aircraft. They typically consist of a locomotive, a frame, and the main boarding stairs themselves. The locomotive provides the power to move the stairs to the corresponding position at the aircraft door; the frame provides support and connection; and the main boarding stairs serve as the passageway for passengers.

[0003] However, most traditional boarding stairs have poor positioning stability. They rely mainly on simple braking methods for fixation, which makes them susceptible to displacement due to external forces or operational oversights. This compromises safety and limits their efficiency and safety to some extent. Utility Model Content

[0004] The purpose of this invention is to provide a telescopic passenger boarding ladder to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a telescopic passenger boarding ladder, including a front end, a frame fixedly connected to the right side of the front end, a boarding ladder body fixedly connected to the right side of the frame, a positioning structure provided on the top of the frame, and disassembly and assembly mechanisms provided on the front and rear sides of the positioning structure.

[0006] The positioning structure includes a lifting component, a driving component, a positioning component, and a guiding component. The lifting component is located on the top of the vehicle frame, the driving component is located on top of the lifting component, the positioning component is located inside the bottom of the lifting component, and the guiding component is located on top of the positioning component.

[0007] The disassembly and assembly mechanism includes a support component, an adjustment component, and a locking component. The support component is located outside the drive component, the adjustment component is located on the front and rear sides of the support component, and the locking component is located inside the adjustment component.

[0008] Preferably, the lifting assembly includes a bracket, which is fixedly connected to the top of the vehicle frame. A turntable is rotatably connected to the top of the bracket, and a threaded shaft is fixedly connected to the inner ring of the turntable. A limit piece is fixedly connected to the bottom of the threaded shaft.

[0009] Preferably, the drive assembly includes a drive motor, which is disposed above the threaded shaft. A drive shaft is fixedly connected to the bottom of the drive motor, and a transmission shaft is snapped into the bottom of the drive shaft. The transmission shaft is fixedly connected to the top of the threaded shaft.

[0010] Preferably, the positioning component includes a fixing screw cylinder, which is threadedly connected to the outer ring of the threaded shaft. A fixing fin is fixedly connected to the outer ring of the fixing screw cylinder. A lifting frame is fixedly connected to the outside of the fixing fin. The lifting frame is snapped into the top of the vehicle frame. A locking pin is fixedly connected to the bottom of the lifting frame.

[0011] Preferably, the guide assembly includes a fixing plate, which is fixedly connected to the four corners of the top of the lifting frame. A slide cylinder is fixedly connected to the top of the fixing plate. A reinforcing fin is fixedly connected to the inner side of the outer ring of the slide cylinder. The reinforcing fin is fixedly connected to the inner side of the fixing plate. A guide rod is slidably connected to the inner ring of the slide cylinder. The guide rod is fixedly connected to the top of the frame and the top of the bracket.

[0012] Preferably, the support assembly includes a mounting base, which is snapped onto the bottom of the drive motor. Fixed fins are fixedly connected to the four corners of the bottom of the mounting base, and the fixed fins are fixedly connected to the top of the bracket. Pads are provided on the front and rear sides inside the mounting base, and the pads are fixedly connected to the front and rear sides of the drive motor.

[0013] Preferably, the adjustment assembly includes a fixed box, which is fixedly connected to the front and rear sides of the mounting base. A threaded drum is rotatably connected to the outer side of the fixed box, and a torsion ring is fixedly connected to the outer ring of the threaded drum.

[0014] Preferably, the locking assembly includes a threaded rod, which is threadedly connected to the inner ring of a threaded drum. A limiting piece is fixedly connected to the outer side of the threaded rod, and a movable plate is fixedly connected to the inner side of the threaded rod. The movable plate is slidably connected to the fixed box, and a shaped locking rod is fixedly connected to the inner side of the movable plate. The shaped locking rod passes inward through the mounting base and engages with the pad.

[0015] Compared with the prior art, this utility model provides a telescopic passenger boarding ladder, which has the following advantages:

[0016] 1. This telescopic passenger boarding ladder, through its positioning mechanism, allows staff to control the rotation of the threaded shaft simply by starting the drive motor, thus controlling the lifting frame and enabling the locking pin to engage with the top of the ground. This completes the overall positioning of the carriage, frame, and main body of the boarding ladder, ensuring that the carriage and frame will not shift due to human error such as forgetting to engage the handbrake after being driven to the predetermined position. This increases the overall stability of the boarding ladder during use and improves its safety.

[0017] 2. This telescopic passenger boarding ladder features a modular assembly and disassembly mechanism. The drive motor is secured within the mounting base, and its positioning is achieved by a shaped locking rod engaging with a pad. Operators can simply rotate the torsion rings on both sides to lock and disassemble the drive motor. This allows for easy assembly and disassembly of the drive motor as needed, facilitating subsequent maintenance, repair, and replacement. The system is simple and user-friendly. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a front view of the present utility model;

[0020] Figure 2 This is a schematic diagram on the right side of the present invention;

[0021] Figure 3 Cross-sectional view of part of the structure of this utility model Figure 1 ;

[0022] Figure 4 This is a sectional view of the positioning mechanism.

[0023] Figure 5 Cross-sectional view of part of the structure of this utility model Figure 2 ;

[0024] Figure 6 This is a sectional view of the disassembly and assembly mechanism.

[0025] In the diagram: 1. Positioning structure; 11. Lifting assembly; 1101. Bracket; 1102. Turntable; 1103. Threaded shaft; 1104. Limiting piece 1; 12. Drive assembly; 1201. Drive motor; 1202. Drive shaft; 1203. Transmission retaining pin; 13. Positioning assembly; 1301. Fixed screw cylinder; 1302. Fixed fin; 1303. Lifting frame; 1304. Locking pin; 14. Guide assembly; 1401. Fixing plate; 1402. Slide cylinder ; 1403, Reinforcing fins; 1404, Guide rod; 2, Disassembly and assembly mechanism; 21, Support assembly; 2101, Mounting base; 2102, Fixed fin plate; 2103, Pad block; 22, Adjustment assembly; 2201, Fixing box; 2202, Threaded drum; 2203, Torsion ring; 23, Locking assembly; 2301, Threaded rod; 2302, Limiting plate two; 2303, Moving plate; 2304, Irregularly shaped locking rod; 3, Car head; 31, Car frame; 4, Boarding ladder main body. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] This utility model provides a technical solution:

[0029] Example 1

[0030] Combination Figures 1 to 5 A telescopic passenger boarding ladder includes a head unit 3, a frame 31 fixedly connected to the right side of the head unit 3, a boarding ladder body 4 fixedly connected to the right side of the frame 31, a positioning structure 1 on the top of the frame 31, and disassembly and assembly mechanisms 2 on the front and rear sides of the positioning structure 1.

[0031] The positioning structure 1 includes a lifting assembly 11, a driving assembly 12, a positioning assembly 13, and a guide assembly 14. The lifting assembly 11 is located on the top of the frame 31, the driving assembly 12 is located on the top of the lifting assembly 11, the positioning assembly 13 is located inside the bottom of the lifting assembly 11, and the guide assembly 14 is located on the top of the positioning assembly 13.

[0032] The lifting assembly 11 includes a bracket 1101, which is fixedly connected to the top of the frame 31. A turntable 1102 is rotatably connected to the top of the bracket 1101. A threaded shaft 1103 is fixedly connected to the inner ring of the turntable 1102. A limit piece 1104 is fixedly connected to the bottom of the threaded shaft 1103. The drive assembly 12 includes a drive motor 1201, which is positioned above the threaded shaft 1103. A drive shaft 1202 is fixedly connected to the bottom of the drive motor 1201. A transmission clip 1203 is engaged inside the bottom of the drive shaft 1202. The transmission clip 1203 is fixedly connected to the top of the threaded shaft 1103. The positioning assembly 13 includes a fixing screw 1301, which is threadedly connected to the outer ring of the threaded shaft 1103. 01. A fixed fin 1302 is fixedly connected to the outer ring. A lifting frame 1303 is fixedly connected to the outer side of the fixed fin 1302. The lifting frame 1303 is snapped into the top of the frame 31. A locking pin 1304 is fixedly connected to the bottom of the lifting frame 1303. The guide assembly 14 includes a fixed plate 1401. The fixed plate 1401 is fixedly connected to the four corners of the top of the lifting frame 1303. A slide cylinder 1402 is fixedly connected to the top of the fixed plate 1401. A reinforcing fin 1403 is fixedly connected to the inner side of the outer ring of the slide cylinder 1402. The reinforcing fin 1403 is fixedly connected to the inner side of the fixed plate 1401. A guide rod 1404 is slidably connected to the inner ring of the slide cylinder 1402. The guide rod 1404 is fixedly connected to the top of the frame 31. The guide rod 1404 is fixedly connected to the top of the bracket 1101.

[0033] Furthermore, when using this device, the operator only needs to start the drive motor 1201 to control the rotation of the threaded shaft 1103, thereby completing the lifting control of the lifting frame 1303. This allows the locking pin 1304 to engage with the top of the ground, completing the overall positioning of the vehicle head 3, the frame 31, and the boarding ladder body 4. This ensures that after the vehicle head 3 and the frame 31 are driven to the predetermined position and stop, the frame 31 will not be misaligned due to human error, such as forgetting to engage the handbrake. This increases the overall stability of the boarding ladder body 4 during use and improves its safety.

[0034] Example 2

[0035] See Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6Furthermore, based on Embodiment 1, the disassembly and assembly mechanism 2 includes a support component 21, an adjustment component 22, and a locking component 23. The support component 21 is disposed on the outside of the drive component 12, the adjustment component 22 is disposed on the front and rear sides of the support component 21, and the locking component 23 is disposed on the inside of the outside of the adjustment component 22.

[0036] Support component 21 includes a mounting base 2101, which is snapped onto the bottom of drive motor 1201. Fixing fins 2102 are fixedly connected to the four corners of the bottom of the mounting base 2101, and the fixing fins 2102 are fixedly connected to the top of bracket 1101. Pads 2103 are provided on the front and rear sides inside the mounting base 2101, and the pads 2103 are fixedly connected to the front and rear sides of drive motor 1201. Adjustment component 22 includes a fixing box 2201, which is fixedly connected to the front and rear sides of mounting base 2101. A threaded connection is rotatably provided on the outer side of the fixing box 2201. The rotating drum 2202 has a torsion ring 2203 fixedly connected to its outer ring. The locking assembly 23 includes a threaded rod 2301, which is threadedly connected to the inner ring of the rotating drum 2202. A limit plate 2302 is fixedly connected to the outer side of the threaded rod 2301. A movable plate 2303 is fixedly connected to the inner side of the threaded rod 2301. The movable plate 2303 is slidably connected to the fixed box 2201. A special-shaped locking rod 2304 is fixedly connected to the inner side of the movable plate 2303. The special-shaped locking rod 2304 passes inward through the mounting base 2101 and engages with the pad 2103.

[0037] Furthermore: The drive motor 1201 is snapped into the mounting base 2101, and the irregularly shaped locking rod 2304 is snapped into the pad 2103 to complete the positioning of the drive motor 1201. This allows the operator to control the irregularly shaped locking rod 2304 on the front and rear sides by simply rotating the torsion ring 2203 on both sides to lock and remove the drive motor 1201. This allows the operator to disassemble and assemble the drive motor 1201 as needed, facilitating subsequent inspection, maintenance, and replacement of the drive motor 1201. The operation is simple and convenient for the operator to use.

[0038] In actual operation, when this device is used, after the front of the vehicle 3 has traveled to the predetermined position, the driver turns off the engine of the front of the vehicle 3 and pulls the handbrake to initially position the frame 31. Then, the drive motor 1201 is started. The start of the drive motor 1201 drives the transmission clamp shaft 1203 to rotate through the drive shaft 1202. The rotation of the transmission clamp shaft 1203 drives the threaded shaft 1103 to rotate. The rotation of the threaded shaft 1103 controls the fixed screw cylinder 1301 to move downward. The downward movement of the fixed screw cylinder 1301 drives the lifting frame 1303 to move downward through the fixed fin 1302. The downward movement of the lifting frame 1303 drives the locking pin 1304 to move downward. The locking pin 1304 moves downward and engages with the top of the ground, thus supplementing the positioning of the frame 31 and further locking the position of the frame 31. At this time, the locking process of the position of the boarding ladder body 4 is completed.

[0039] When it is necessary to disassemble the drive motor 1201, the operator first rotates the torsion rings 2203 on both the front and rear sides. The rotation of the torsion rings 2203 drives the threaded rod 2301 to move outward through the threaded drum 2202. The outward movement of the threaded rod 2301 drives the irregular clamp 2304 to move outward through the moving plate 2303. The irregular clamp 2304 moves outward and retracts into the fixed box 2201, releasing the connection with the pad 2103. At this time, the positioning of the drive motor 1201 is released. Then, the drive motor 1201 can be moved upward directly to complete the disassembly of the drive motor 1201.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A telescopic passenger boarding ladder, comprising a front section (3), characterized in that: The vehicle head (3) is fixedly connected to the right side of the frame (31), the frame (31) is fixedly connected to the right side of the boarding ladder body (4), the top of the frame (31) is provided with a positioning structure (1), and the positioning structure (1) is provided with a disassembly and assembly mechanism (2) on the front and rear sides. The positioning structure (1) includes a lifting component (11), a driving component (12), a positioning component (13), and a guide component (14). The lifting component (11) is located on the top of the frame (31), the driving component (12) is located on the top of the lifting component (11), the positioning component (13) is located inside the bottom of the lifting component (11), and the guide component (14) is located on the top of the positioning component (13). The disassembly and assembly mechanism (2) includes a support component (21), an adjustment component (22) and a locking component (23). The support component (21) is located outside the drive component (12), the adjustment component (22) is located on the front and rear sides of the support component (21), and the locking component (23) is located inside the outside of the adjustment component (22).

2. The telescopic passenger boarding ladder according to claim 1, characterized in that: The lifting assembly (11) includes a bracket (1101), which is fixedly connected to the top of the frame (31). A turntable (1102) is rotatably connected to the top of the bracket (1101), and a threaded shaft (1103) is fixedly connected to the inner ring of the turntable (1102). A limit piece (1104) is fixedly connected to the bottom of the threaded shaft (1103).

3. A telescopic passenger boarding ladder according to claim 1, characterized in that: The drive assembly (12) includes a drive motor (1201), which is located above the threaded shaft (1103). A drive shaft (1202) is fixedly connected to the bottom of the drive motor (1201), and a transmission shaft (1203) is snapped into the bottom of the drive shaft (1202). The transmission shaft (1203) is fixedly connected to the top of the threaded shaft (1103).

4. A telescopic passenger boarding ladder according to claim 1, characterized in that: The positioning component (13) includes a fixing screw (1301), which is threaded to the outer ring of the threaded shaft (1103). The outer ring of the fixing screw (1301) is fixedly connected to a fixing fin (1302). A lifting frame (1303) is fixedly connected to the outside of the fixing fin (1302). The lifting frame (1303) is snapped into the top of the frame (31). A locking pin (1304) is fixedly connected to the bottom of the lifting frame (1303).

5. A telescopic passenger boarding ladder according to claim 1, characterized in that: The guide assembly (14) includes a fixing plate (1401), which is fixedly connected to the top four corners of the lifting frame (1303). A slide cylinder (1402) is fixedly connected to the top of the fixing plate (1401). A reinforcing fin (1403) is fixedly connected to the inner side of the outer ring of the slide cylinder (1402). The reinforcing fin (1403) is fixedly connected to the inner side of the fixing plate (1401). A guide rod (1404) is slidably connected to the inner ring of the slide cylinder (1402). The guide rod (1404) is fixedly connected to the top of the frame (31) and to the top of the bracket (1101).

6. A telescopic passenger boarding ladder according to claim 1, characterized in that: The support assembly (21) includes a mounting base (2101), which is snapped onto the bottom of the drive motor (1201). Fixed fins (2102) are fixedly connected to the four corners of the bottom of the mounting base (2101). The fixed fins (2102) are fixedly connected to the top of the bracket (1101). Pads (2103) are provided on the front and rear sides inside the mounting base (2101). The pads (2103) are fixedly connected to the front and rear sides of the drive motor (1201).

7. A telescopic passenger boarding ladder according to claim 1, characterized in that: The adjustment assembly (22) includes a fixed box (2201), which is fixedly connected to the front and rear sides of the mounting base (2101). A threaded drum (2202) is rotatably connected to the outer side of the fixed box (2201), and a torsion ring (2203) is fixedly connected to the outer ring of the threaded drum (2202).

8. A telescopic passenger boarding ladder according to claim 1, characterized in that: The locking assembly (23) includes a threaded rod (2301), which is threadedly connected to the inner ring of a threaded drum (2202). A limiting piece (2302) is fixedly connected to the outer side of the threaded rod (2301). A movable plate (2303) is fixedly connected to the inner side of the threaded rod (2301). The movable plate (2303) is slidably connected to the fixed box (2201). A shaped locking rod (2304) is fixedly connected to the inner side of the movable plate (2303). The shaped locking rod (2304) passes inward through the mounting base (2101) and engages with the pad (2103).

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