A kind of guest lift car docking leveling mechanism
By using a level sensor and intelligent controller to drive electric push rods and cylinders, the height and angle of the passenger boarding bridge platform and the aircraft door are automatically adjusted, solving the accuracy and stability problems of existing passenger boarding bridge leveling mechanisms and improving docking efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU KATU AVIATION TECH CO LTD
- Filing Date
- 2025-07-22
- Publication Date
- 2026-07-14
AI Technical Summary
The existing passenger boarding bridge leveling mechanism has a complex structure, low leveling accuracy, and poor stability. It cannot effectively adjust the height difference and angle deviation between the platform and the aircraft door, resulting in inconvenience for passengers getting on and off the plane and posing safety hazards.
The system employs a level sensor and intelligent controller in conjunction with electric push rods and cylinders to detect the platform's tilt angle in real time and automatically adjust the platform and ladder height to achieve closed-loop control, ensuring seamless docking between the platform and the aircraft door.
It enables rapid and precise leveling of the platform, reduces the labor intensity of operators, improves docking efficiency and safety, adapts to the slope differences of different airport runways and aircraft types, and avoids passenger falls or equipment collision accidents.
Smart Images

Figure CN224491505U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of passenger elevator technology, specifically a leveling mechanism for connecting passenger elevators. Background Technology
[0002] In the field of aviation ground service equipment, passenger boarding stairs are important equipment used by airports to pick up and drop off passengers. When passenger boarding stairs are docked with aircraft doors, due to factors such as the aircraft's parking posture, uneven ground, and the structure of the passenger boarding stairs themselves, there are often height differences and angle deviations between the passenger boarding stairs platform and the aircraft doors.
[0003] If the leveling mechanism cannot be effectively adjusted, it will not only cause inconvenience to passengers getting on and off the plane, but may also pose safety hazards. Existing passenger boarding stairs leveling mechanisms have problems such as complex structure, low leveling accuracy, and poor stability, which cannot meet the actual use needs. Therefore, we propose a passenger boarding stairs docking leveling mechanism to solve the above problems. Utility Model Content
[0004] The purpose of this utility model is to provide a leveling mechanism for connecting passenger elevators to solve the problems raised in the prior art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a leveling mechanism for connecting passenger elevator cars, comprising a passenger elevator car body and an elevator frame, wherein a platform is hinged to the left end of the elevator frame, and two force-bearing plates are fixedly installed on the bottom surface of the elevator frame, wherein a first pin seat is fixedly installed on the outer surface of each force-bearing plate, and an electric push rod is hinged to each first pin seat via a pin, wherein a level sensor and two second pin seats are fixedly installed on the bottom surface of the platform, and each second pin seat is hinged to the output end of the electric push rod via a pin.
[0006] In a further embodiment, a vertical plate is fixedly installed on the upper surface of the passenger elevator body, and an intelligent controller is fixedly installed on the outer surface of the vertical plate.
[0007] In a further embodiment, the level sensor is electrically connected to the intelligent controller via a wire, and each of the electric push rods is electrically connected to the intelligent controller via a wire.
[0008] In a further embodiment, two connecting blocks are fixedly installed on the bottom surface of the ladder body, and two third pin seats are fixedly installed on the upper surface of the passenger elevator body. Each of the third pin seats is hinged to the connecting blocks through a pin.
[0009] In a further embodiment, two fixing blocks are fixedly installed on the upper surface of the passenger elevator body. Bearings are fixedly embedded on the side of the two fixing blocks that are close to each other. A rotating shaft is fixedly installed on the inner ring of the two bearings. A cylinder is fixedly installed on the outer surface of the rotating shaft.
[0010] In a further embodiment, the inner rings of the two bearings are jointly fixedly mounted with a rotating shaft, and a cylinder is fixedly mounted on the outer surface of the rotating shaft. The cylinder is electrically connected to the intelligent controller via a wire.
[0011] In a further embodiment, a mounting plate is fixedly installed on the bottom surface of the ladder body, and a fourth pin seat is fixedly installed on the bottom surface of the mounting plate. The fourth pin seat is hinged to the output end of the cylinder through a pin.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] This device can detect the platform's level in real time by installing a level sensor on the bottom surface of the platform. By using wires to electrically connect the level sensor to the intelligent controller, the detection data of the level sensor can be transmitted to the intelligent controller. By hinged the output ends of the two electric push rods to the two second pin seats respectively, and using wires to electrically connect the intelligent controller to the two electric push rods, the intelligent controller can autonomously control the extension and retraction of the output ends of the two electric push rods according to the detection data of the level sensor, thereby facilitating the adjustment of the platform's level. Attached Figure Description
[0014] Figure 1 A front view of the leveling mechanism for connecting passenger elevator cars.
[0015] Figure 2 A side view of the leveling mechanism for connecting passenger elevator cars.
[0016] Figure 3 Leveling mechanism for connecting passenger elevator cars Figure 2 Enlarged structural diagram at point A in the middle.
[0017] Figure 4 A top view of the leveling mechanism for connecting passenger elevator cars.
[0018] Figure 5 A bottom view of the leveling mechanism for connecting passenger elevator cars.
[0019] The following are the labels in the diagram: 1. Third pin seat; 2. Mounting plate; 3. Fourth pin seat; 4. Cylinder; 5. Fixing block; 6. Passenger elevator body; 7. Vertical plate; 8. Intelligent controller; 9. Force plate; 10. First pin seat; 11. Electric push rod; 12. Second pin seat; 13. Platform; 14. Ladder body; 15. Connecting block; 16. Bearing; 17. Rotating shaft; 18. Horizontal sensor. Detailed Implementation
[0020] 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.
[0021] Example: Figures 1-5 As shown, this utility model provides a technical solution for a leveling mechanism for connecting passenger elevator cars, including a passenger elevator car body 6 and an elevator body 14. A platform 13 is hinged to the left end of the elevator body 14. Two force-bearing plates 9 are fixedly installed on the bottom surface of the elevator body 14. A first pin seat 10 is fixedly installed on the outer surface of each force-bearing plate 9. Each first pin seat 10 is hinged to an electric push rod 11 via a pin. A level sensor 18 and two second pin seats 12 are fixedly installed on the bottom surface of the platform 13. Each second pin seat 12 is hinged to the output end of the electric push rod 11 via a pin. A vertical plate 7 is fixedly installed on the upper surface of the passenger elevator car body 6. An intelligent [device / mechanical device] is fixedly installed on the outer surface of the vertical plate 7. The controller 8 and the level sensor 18 are electrically connected to the intelligent controller 8 via wires. Each electric push rod 11 is also electrically connected to the intelligent controller 8 via wires. The level sensor 18 can detect the level state of the platform 13. By electrically connecting the level sensor 18 to the intelligent controller 8 via wires, the data detected by the level sensor 18 can be transmitted to the intelligent controller 8. By electrically connecting the intelligent controller 8 to the two electric push rods 11 via wires, the intelligent controller 8 can control the extension and retraction of the output ends of the two electric push rods 11 according to the detection data of the level sensor 18. The extension and retraction of the output ends of the two electric push rods 11 can adjust the level state of the platform 13.
[0022] The level sensor 18 monitors the tilt angle data of the platform 13 in real time and transmits the signal to the intelligent controller 8. When the platform tilts (e.g., left higher than right), the intelligent controller 8 calculates the deviation and controls the left electric push rod 11 to shorten and the right electric push rod 11 to extend until the platform returns to a level state, realizing closed-loop automatic leveling. Through the cooperation of the level sensor 18 and the intelligent controller 8, the level status of the platform 13 is monitored in real time to ensure seamless docking between the passenger boarding bridge and the aircraft door. The linkage between the intelligent controller 8 and the electric push rod 11 can quickly respond to uneven ground and load changes caused by passengers getting on and off, and complete leveling within 5 seconds. It can adapt to the slope differences of different airport runways and parking positions without manual adjustment, reducing the labor intensity of operators. Real-time monitoring of the level status avoids passenger falls or equipment collisions caused by platform tilting.
[0023] Two connecting blocks 15 are fixedly installed on the bottom surface of the ladder body 14. Two third pin seats 1 are fixedly installed on the upper surface of the passenger elevator body 6. Each third pin seat 1 is hinged to the connecting block 15 through a pin. Two fixing blocks 5 are fixedly installed on the upper surface of the passenger elevator body 6. Bearings 16 are fixedly embedded on the side of the two fixing blocks 5 that are close to each other. A rotating shaft 17 is fixedly installed on the inner ring of the two bearings 16. A cylinder 4 is fixedly installed on the outer surface of the rotating shaft 17. By hinged to the two connecting blocks 15 and the two third pin seats 1 respectively, the right end of the ladder body 14 can rotate around the two third pin seats 1, thereby making it easy to adjust the height of the left end of the ladder body 14.
[0024] Through the hinged design of the connecting block 15 and the third pin seat 1, the ladder body 14 can rotate around the pin to achieve a range of motion, adapting to the height difference of the aircraft door between 2.5-3.5m. No manual handling or additional heightening is required, improving docking efficiency. Furthermore, the cylinder 4 drives the rotating shaft 17 to rotate, which drives the ladder body 14 to smoothly raise and lower the height for adjustment. This greatly improves efficiency compared to the traditional manual adjustment method and avoids the risk of shaking caused by manual operation. The overall height adjustment of the ladder body adapts to the vertical height difference of the aircraft door. The flexibility of height adjustment, power drive efficiency, and multi-dimensional leveling coordination optimize the docking performance of the passenger boarding bridge, making it particularly suitable for airport scenarios that require frequent docking of different aircraft types.
[0025] A rotating shaft 17 is fixedly mounted on the inner rings of two bearings 16. A cylinder 4 is fixedly mounted on the outer surface of the rotating shaft 17. The cylinder 4 is electrically connected to the intelligent controller 8 via a wire. A mounting plate 2 is fixedly mounted on the bottom surface of the ladder body 14. A fourth pin seat 3 is fixedly mounted on the bottom surface of the mounting plate 2. The fourth pin seat 3 is hinged to the output end of the cylinder 4 via a pin. By fixing both ends of the rotating shaft 17 to the inner rings of the two bearings 16 respectively, the rotating shaft 17 can rotate freely. By electrically connecting the intelligent controller 8 to the cylinder 4 via a wire, the intelligent controller 8 can control the extension and retraction of the output end of the cylinder 4. By mounting the cylinder 4 on the outer surface of the rotating shaft 17 and hinged the output end of the cylinder 4 to the fourth pin seat 3 with a pin, when the output end of the cylinder 4 extends, the bottom end of the cylinder 4 can drive the rotating shaft 17 to rotate. The extension and retraction of the output end of the cylinder 4 can drive the ladder body 14 to adjust its tilt angle.
[0026] By fixing the inner ring of the bearing 16 to the rotating shaft 17, a low-friction rotation is formed, allowing the rotating shaft 17 to rotate freely. This drives the cylinder 4 to achieve rotational adaptation within the rotation range, thereby adjusting the tilt angle of the ladder body 14 to meet the docking requirements of different aircraft door heights. The cylinder 4 adjusts the overall tilt angle of the ladder body 14 to adapt to the vertical height difference of the aircraft door. At the same time, the electric push rod 11 adjusts the platform 13 in real time to compensate for the ground slope. This comprehensively improves docking efficiency, adjustment accuracy, safety, and durability, making it suitable for passenger boarding bridge docking operations at various airports.
[0027] The working principle of this utility model is as follows:
[0028] When the left end of the ladder 14 raises the platform 13 to a certain height, the level sensor 18 installed on the bottom of the platform 13 can detect the level of the platform 13 and transmit the detection data to the intelligent controller 8 through the wire. After processing the detection data, the intelligent controller 8 can autonomously control the extension and retraction of the output ends of the two electric push rods 11. Through the cooperation of the two first pin seats 10, the two electric push rods 11 and the two second pin seats 12, the extension and retraction of the output ends of the two electric push rods 11 can jointly drive the platform 13 to adjust its level. When the level sensor 18 detects that the platform 13 is in a level state, the intelligent controller 8 can stop controlling the extension and retraction of the output ends of the two electric push rods 11, forming a closed-loop control.
[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A leveling mechanism for docking passenger elevator cars, characterized in that: The system includes a passenger elevator body (6) and an elevator body (14). The left end of the elevator body (14) is hinged to a platform (13). Two force-bearing plates (9) are fixedly installed on the bottom surface of the elevator body (14). A first pin seat (10) is fixedly installed on the outer surface of each force-bearing plate (9). Each first pin seat (10) is hinged to an electric push rod (11) through a pin. A level sensor (18) and two second pin seats (12) are fixedly installed on the bottom surface of the platform (13). Each second pin seat (12) is hinged to the output end of the electric push rod (11) through a pin.
2. The leveling mechanism for connecting passenger elevator cars according to claim 1, characterized in that: A vertical plate (7) is fixedly installed on the upper surface of the passenger elevator body (6), and an intelligent controller (8) is fixedly installed on the outer surface of the vertical plate (7).
3. The leveling mechanism for connecting passenger elevator cars according to claim 1, characterized in that: The horizontal sensor (18) is electrically connected to the intelligent controller (8) via a wire, and each of the electric push rods (11) is electrically connected to the intelligent controller (8) via a wire.
4. The leveling mechanism for connecting passenger elevator cars according to claim 1, characterized in that: Two connecting blocks (15) are fixedly installed on the bottom surface of the ladder body (14), and two third pin seats (1) are fixedly installed on the upper surface of the passenger elevator body (6). Each of the third pin seats (1) is hinged to the connecting block (15) through a pin.
5. The leveling mechanism for connecting passenger elevator cars according to claim 1, characterized in that: Two fixing blocks (5) are fixedly installed on the upper surface of the passenger elevator body (6). Bearings (16) are fixedly embedded on the side of the two fixing blocks (5) that are close to each other. A rotating shaft (17) is fixedly installed on the inner ring of the two bearings (16). A cylinder (4) is fixedly installed on the outer surface of the rotating shaft (17).
6. The leveling mechanism for docking passenger elevator cars according to claim 5, characterized in that: The inner rings of the two bearings (16) are fixedly mounted with a rotating shaft (17), and a cylinder (4) is fixedly mounted on the outer surface of the rotating shaft (17). The cylinder (4) is electrically connected to the intelligent controller (8) through a wire.
7. The leveling mechanism for docking passenger elevator cars according to claim 6, characterized in that: The bottom surface of the ladder body (14) is fixedly installed with an installation plate (2), and the bottom surface of the installation plate (2) is fixedly installed with a fourth pin seat (3). The fourth pin seat (3) is hinged to the output end of the cylinder (4) through a pin.