Chain breakage protection device for boarding bridge airport pickup port

Abstract

The utility model relates to the technical field of boarding bridges, in particular to a boarding bridge airport pick-up port chain breakage protection device which comprises a channel frame and an airport pick-up port frame, and a chain breakage protection mechanism is arranged between the channel frame and the airport pick-up port frame. The chain breakage protection mechanism comprises an airport pickup pull rod, a fixed rotating shaft, a bearing, a connecting seat, a brake wheel, a brake rod, brake teeth, a connecting rod, a swing arm and an electric push rod, the fixed rotating shaft is fixedly connected with the connecting seat through the bearing, the airport pickup pull rod is fixedly connected with the airport pickup frame and the connecting seat, the brake wheel is arranged on the connecting seat, and the brake teeth are meshed with the brake wheel in a matched mode. One end of the brake rod is hinged to the channel frame and the connecting rod, the connecting rod is hinged to the swing arm, the swing arm is hinged to the channel frame and driven by the electric push rod, one end of the reset spring is connected with the brake rod, and the other end of the reset spring is connected with the channel frame. The device is simple in structure, rapid and effective in braking, good in reliability, stable in structure and high in safety.

Description

Technical Field

[0001] The utility model relates to the technical field of boarding bridges, in particular to a chain breaking protection device for a boarding bridge receiving port. Background Art

[0002] The receiving gate is the part that directly contacts the aircraft when the boarding bridge docks with the aircraft. In order to adapt to the parking position of the aircraft and achieve close and reliable docking with the aircraft, the receiving gate needs to adjust its angle during the receiving process. The receiving gate and the passage can rotate relatively, and there is a driving device on the receiving gate to drive the receiving gate to rotate around the circular hall of the boarding bridge passage. The receiving gate driving device is composed of a motor, gears, chains, etc. The driving motor is fixed on the receiving gate, and the chain is fixed on the circular hall of the passage. The receiving gate driving gear is engaged with the chain to drive the receiving gate to rotate around the chain, thereby driving the receiving gate to rotate around the circular hall of the passage. The rotating driving device has the hidden danger of chain breakage. Once the chain breaks, the receiving gate will be in a state of uncontrolled rotation, and there is a risk of collision with the aircraft. According to a search, Chinese patent CN104260898B discloses an invention patent entitled "a braking system for a cabin of a boarding bridge for entering or exiting an aircraft or a ship", wherein the boarding bridge comprises a circular structure, the cabin is mounted on the circular structure with a rotation function, the braking system comprises a braking device for pausing the rotation of the cabin, and an operation sensor for a driving system of the cabin, wherein when the operation sensor detects a fault or malfunction of the driving system of the cabin, the braking device is activated by the operation sensor, the braking device comprises a cabin rotation blocking mechanism consisting of a linear motion lance rod and a coupling component for the lance rod, the lance rod is mounted on a frame supporting the circular structure, and the coupling component is connected to the cabin The lance is aligned with the coupling component and is connected with a holding device and a pushing device, the holding device is capable of holding the lance in a non-starting position so that the lance is separated from the coupling component; the pushing device is capable of pushing the lance to a starting position, in which the lance fits into the coupling component to block it; when the sensor detects a fault or malfunction of the drive system of the cabin, the holding device can be released by the operating sensor to allow the lance to be actuated by the pushing device to move upward to its starting position, the coupling component is composed of a gear integral with the rotation axis of the cabin, the teeth of the gear radially facing the lance , the inner end of the lance rod facing the gear forms a terminal end, and its size is suitable for fitting between the gear teeth. The lance rod is connected to a first structure by a guide rail that guides the linear displacement of the lance rod, and the first structure is integrated with the frame of the circular structure. The holding device of the lance rod is connected to the outer end of the lance rod. The holding device includes a cable, one end of which is fixed to the lance rod, and the other end opposite to it is fixed to the driving system of the cabin. The pushing device includes a spring, which is sleeved on the lance rod in a compressed state and is located between a boss and the first structure supporting the lance rod. The boss is integrated with the lance rod and is close to the inner end of the lance rod. The lance rod also has an auxiliary device, which prevents the lance rod from rotating and retreating.

[0003] The shortcomings of the above patent are: first, the braking device of the above patent has many structural components and a complex structure. The tension of the spring is used to push the spear rod to the starting position, and its inner end is fitted between the two consecutive toothed gears. However, the spring is prone to failure during long-term use, which makes the spear rod unable to move into place or even not move, thereby failing to achieve braking. Second, the spear rod in the above patent needs to be stuck between the two consecutive toothed gears, which means that the spear rod needs to be exactly between the two consecutive toothed gears to move forward. If the spear rod moves and just touches the tooth surface of the tooth, it will not be stuck to the gear and may even be repelled by the gear. An auxiliary device needs to be set to prevent the spear rod from retreating. Obviously, the cabin cannot be braked in the first time, which increases the risk of cabin loss of control and has low safety. Summary of the invention

[0004] The utility model aims to solve the deficiencies in the prior art and provide a boarding bridge receiving port chain breaking protection device which has the advantages of simple structure, fast and effective braking, good reliability, stable structure and high safety.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A chain-breaking protection device for a boarding bridge receiving port, comprising a channel frame and a receiving port frame, characterized in that a chain-breaking protection mechanism is arranged between the channel frame and the receiving port frame, the chain-breaking protection mechanism comprises a receiving port pull rod, a fixed rotating shaft, a bearing, a connecting seat, a brake wheel, a brake tooth, a connecting rod mechanism and an electric push rod, the receiving port frame is provided with a receiving port pull rod, the channel frame is provided with a fixed rotating shaft, the lower end of the fixed rotating shaft is fixedly connected to the channel frame, the fixed rotating shaft is fixedly connected to the connecting seat via a bearing, one end of the receiving port pull rod is fixedly connected to the receiving port frame, and the other end is fixedly connected to the connecting seat, the connecting seat is provided with a brake wheel, the brake wheel is fixedly connected to the connecting seat, one side of the brake wheel is provided with a brake tooth, the brake tooth is matched and meshed with the brake wheel, the brake tooth is installed on the connecting rod mechanism, the connecting rod mechanism is driven by the electric push rod, the electric push rod is connected to the channel frame, so that the brake tooth is meshed with the brake wheel through the electric push rod to brake the brake wheel, and then the receiving port frame is fixed by the receiving port pull rod.

[0007] The connecting rod mechanism of the utility model comprises a brake rod, a connecting rod and a swing arm. One side of the brake rod extends toward the brake wheel to form a brake tooth. The brake tooth is fixedly connected to the brake rod. One end of the brake rod is hinged to the channel frame, and the other end is provided with a connecting rod. One end of the connecting rod is hinged to the brake rod, and the other end is provided with a swing arm. One end of the swing arm is hinged to the brake rod, and the other end is hinged to the channel frame. The swing arm is driven by an electric push rod to drive the swing arm through the electric push rod, the swing arm drives the connecting rod, and the connecting rod drives the brake rod. The brake rod approaches the brake wheel with the brake teeth, and the brake teeth mesh and clamp with the brake wheel to fix the brake wheel. The brake wheel is fixed to the connecting port pull rod via a connecting seat, and then the position of the connecting port frame is fixed by fixing the connecting port pull rod.

[0008] The utility model provides a return spring on the brake rod, one end of the return spring is fixedly connected to the brake rod, and the other end is fixedly connected to the channel frame, so that the brake rod is pulled by the return spring so that the brake rod has a pulling force away from the brake wheel, ensuring the safe working state of the machine port frame and the reliable return of the brake tooth.

[0009] The utility model provides a first support column, a second support column and a third support column on one side of the brake rod, and the first support column, the second support column and the third support column are respectively fixedly connected to the channel frame, one end of the brake rod is hinged to the first support column, the other end of the swing arm is hinged to the second support column, one end of the electric push rod is hinged to the swing arm, and the other end is hinged to the third support column, so as to support the brake rod, the swing arm and the electric push rod through the first support column, the second support column and the third support column.

[0010] The utility model has two connecting port pull rods, a connecting block is arranged between the two connecting port pull rods, and the connecting block is fixedly connected to the two connecting port pull rods so as to improve the structural strength of the connecting port pull rods through the connecting block.

[0011] The utility model discloses a pressure plate on the upper end of the connecting seat, which extends upward to form a connecting shaft. The brake wheel is sleeved on the connecting shaft and is fixedly connected to the connecting shaft. The pressure plate covers the connecting shaft and the upper end of the brake wheel. The pressure plate is fixedly connected to the connecting shaft to limit the brake wheel through the pressure plate to prevent the brake wheel from being separated from the connecting shaft.

[0012] An adjustment plate is provided between the electric push rod and the third support column of the utility model, and an adjustment long hole is provided on the adjustment plate. One end of the adjustment plate is fixedly connected to the third support column via a screw and the adjustment long hole, and the other end is hinged to the electric push rod, so as to adjust the position of the adjustment plate by adjusting the long hole and the screw, thereby adjusting the position of the electric push rod.

[0013] The utility model has the advantages of simple structure, fast and effective braking, good reliability, stable structure, high safety, etc. due to the adoption of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] Figure 2 This utility model Figure 1 Middle AA section view.

[0016] Figure 3 It is an enlarged view of the chain breaking protection mechanism of the utility model.

[0017] Figure 4 This utility model Figure 3 Top view of the .

[0018] Figure 5 It is a schematic diagram of the engagement of the brake tooth and the brake wheel when the utility model is used.

[0019] Figure numerals: channel frame 1, machine port frame 2, chain break protection mechanism 3, machine port pull rod 4, fixed rotating shaft 5, connecting seat 6, brake wheel 7, brake rod 8, brake tooth 9, connecting rod 10, swing arm 11, electric push rod 12, return spring 13, first support column 14, second support column 15, third support column 16, connecting block 17, pressure plate 18, connecting shaft 19, adjusting plate 20. DETAILED DESCRIPTION

[0020] The specific implementation of the utility model is further described in detail below in conjunction with the accompanying drawings.

[0021] A chain-breaking protection device for a boarding bridge receiving port, comprising a channel frame 1 and a receiving port frame 2, characterized in that: a chain-breaking protection mechanism 3 is arranged between the channel frame 1 and the receiving port frame 2, the chain-breaking protection mechanism 3 comprises a receiving port pull rod 4, a fixed rotating shaft 5, a bearing, a connecting seat 6, a brake wheel 7, a brake rod 8, a brake tooth 9, a connecting rod 10, a swing arm 11 and an electric push rod 12, a receiving port pull rod 4 is arranged at intervals on the receiving port frame 2, a fixed rotating shaft 5 is arranged on the channel frame 1, the lower end of the fixed rotating shaft 5 is fixedly connected to the channel frame 1, the fixed rotating shaft 5 is fixedly connected to the connecting seat 6 via a bearing, one end of the receiving port pull rod 4 is fixedly connected to the receiving port frame 2, and the other end is fixedly connected to the connecting seat 6, a brake wheel 7 is arranged on the connecting seat 6, and the brake wheel 7 is fixedly connected to the connecting seat 6, A brake rod 8 is provided on one side of the driving wheel 7, and one side of the brake rod 8 extends toward the brake wheel direction to form a brake tooth 9, and the brake tooth 9 is matched and meshed with the brake wheel 7. One end of the brake rod 8 is hinged to the channel frame 1, and the other end is provided with a connecting rod 10. One end of the connecting rod 10 is hinged to the brake rod 8, and the other end is provided with a swing arm 11. One end of the swing arm 11 is hinged to the brake rod 8, and the other end is hinged to the channel frame 1. The swing arm 11 is driven by an electric push rod 12, and the electric push rod 12 is installed on the channel frame 1 to drive the swing arm through the electric push rod, the swing arm drives the connecting rod, and the connecting rod drives the brake rod. The brake rod approaches the brake wheel with the brake teeth, and the brake teeth mesh and clamp with the brake wheel to fix the brake wheel. The brake wheel is fixed to the connecting port pull rod through the connecting seat, and then the position of the connecting port frame is fixed by fixing the connecting port pull rod 4.

[0022] A return spring 13 is provided on the brake rod 8 of the utility model, one end of the return spring 13 is fixedly connected to the brake rod 8, and the other end is fixedly connected to the channel frame 1, so that the brake rod is pulled by the return spring so that the brake rod has a pulling force away from the brake wheel, ensuring the safe working state of the machine port frame and the reliable return of the brake tooth.

[0023] A first support column 14, a second support column 15 and a third support column 16 are provided on one side of the brake rod 8 of the utility model. The first support column 14, the second support column 15 and the third support column 16 are respectively fixedly connected to the channel frame 1, one end of the brake rod 8 is hinged to the first support column 14, the other end of the swing arm 11 is hinged to the second support column 15, one end of the electric push rod 12 is hinged to the swing arm 11, and the other end is hinged to the third support column 16, so as to support the brake rod, the swing arm and the electric push rod through the first support column, the second support column and the third support column.

[0024] The utility model has two connecting port pull rods 4, and a connecting block 17 is provided between the two connecting port pull rods 4. The connecting block 17 is fixedly connected to the two connecting port pull rods 4 to improve the structural strength of the connecting port pull rods through the connecting block.

[0025] The utility model discloses a pressure plate 18 at the upper end of the connecting seat 6, and the upper end of the connecting seat 6 extends upward to form a connecting shaft 19. The brake wheel 7 is sleeved on the connecting shaft 19 and fixedly connected to the connecting shaft 19. The pressure plate 18 covers the connecting shaft 19 and the upper end of the brake wheel 7. The pressure plate 18 is fixedly connected to the connecting shaft 19 to limit the brake wheel through the pressure plate to prevent the brake wheel from being separated from the connecting shaft.

[0026] An adjustment plate 20 is provided between the electric push rod 12 and the third support column 16 of the utility model. The adjustment plate 20 is provided with an adjustment long hole. One end of the adjustment plate 20 is fixedly connected to the third support column 16 via screws and the adjustment long hole, and the other end is hinged to the electric push rod 12, so that the position of the adjustment plate can be adjusted by adjusting the long hole and the screw, thereby adjusting the position of the electric push rod.

[0027] In the utility model, the receiving port frame 2 is rotated around the channel frame 1 by a receiving port driving device. The receiving port driving device is composed of a motor, a receiving port driving gear, a chain, etc. The driving motor is fixed on the receiving port frame 2, and the chain is fixed on the channel frame 1. The receiving port driving gear is engaged with the chain to drive the receiving port frame to rotate around the chain, thereby driving the receiving port frame 2 to rotate around the channel frame 1. A chain break detection mechanism is set on the chain, and a sensing switch is usually set on one side of the chain. After the chain breaks, the tensioning rod will trigger the sensing switch, and the sensing switch will transmit the signal to the control system of the boarding bridge. The chain break detection mechanism can also refer to the chain break detection device in a boarding bridge with chain break detection protection disclosed in Chinese patent CN201777389U. Other break detection mechanisms can be used as long as they can detect the chain break and transmit the signal to the boarding bridge control system. This part is the same as the prior art and will not be repeated here.

[0028] Before use, the electric push rod 12 is connected to the control system of the boarding bridge, such as the PLC control system. The distance from the electric push rod 12 to the swing arm 11 can be adjusted by the adjustment plate 20. One end of the adjustment plate 20 is fixedly connected to the third support column 16 through an adjustment long hole and a screw, and the other end is hinged to the electric push rod 12. Therefore, by adjusting the position of the adjustment plate 20, the position of the electric push rod 12 can be adjusted. Specifically, loosen the screw and move the adjustment plate 20. The adjustment plate 20 moves closer to or away from the swing arm 11 along the screw through the adjustment long hole. When the telescopic rod of the electric push rod 12 reaches its maximum extension, the swing arm 11 and the connecting rod 10 form a line and reach the dead point position of the connecting rod mechanism. At this time, the brake tooth 9 is engaged with the brake wheel 7, that is, the adjustment plate 20 is adjusted into place, and the screw is tightened to fix the position of the adjustment plate 20, and then the position of the electric push rod 12 is fixed.

[0029] like Figures 1-5The brake rod 8, the swing arm 11, and the electric push rod 12 are fixedly connected to the channel frame 1 through the first support column 14, the second support column 15, and the third support column 16. The two port pull rods 4 are located on both sides of the port frame 2 to facilitate the support and drive of the port frame 2 to rotate. One end of the port pull rod 4 is fixedly connected to the port frame 2, and the other end is hinged to the fixed shaft 5 of the channel frame 1 through a bearing. The port pull rod 4 is fixedly connected to the brake wheel 7 through a connecting seat 6. The two port pull rods 4 are distributed in a V shape and rotate relative to the fixed shaft 5. Under the drive of the port drive device, the port pull rod 4 drives the port frame 2 to rotate around the fixed shaft 5.

[0030] When the chain breaks, the control system starts the electric push rod 12, the electric push rod 12 drives the swing arm 11 to drive the connecting rod 10 to extend the brake rod 8 toward the brake wheel 7, the reset spring 13 is stretched, and the brake teeth 9 fixed on the brake rod 8 mesh with the teeth of the brake wheel 7. Because the first support column 14, the second support column 15, and the third support column 16 are all fixed on the channel frame 1 and are immovable, the brake rod 8, the swing arm 11, and the electric push rod 12 are all hinged on the support columns. When the electric push rod 12 is extended to cause the brake teeth 9 to mesh with the brake wheel 7, as shown in the attached Figure 5 As shown, the swing arm 11 and the connecting rod 10 are in a straight line, the brake teeth 9 are meshed with the brake wheel 7, and the telescopic rod of the electric push rod 12 is extended to its maximum length. The electric push rod 12 adopts the electric push rod with a self-locking function in the prior art. When the telescopic rod of the electric push rod 12 is extended to its maximum length, that is, after being extended to the position, the self-locking function is activated to ensure that the brake teeth 9 and the brake wheel 7 are always in a meshing state, the brake teeth 9 are fixed, the brake wheel 7 is also fixed, and the brake wheel 7 is fixed to the connecting port pull rod 4, so the connecting port pull rod 4 is fixed, and the connecting port pull rod 4 stops rotating, driving the connecting port frame 2 to stop rotating, realizing the emergency braking of the connecting port frame 2, thereby avoiding the phenomenon of the connecting port frame 2 losing control and causing an accident;

[0031] When the brake is released, the telescopic rod of the electric push rod 12 is retracted, the brake rod 8 is withdrawn, and the brake teeth 9 are separated from the brake wheel 7. Figure 4 As shown, the reset spring 13 is reset, and the receiving port frame 2 rotates around the channel frame 1.

[0032] Compared with the prior art, firstly, the utility model has the advantages of simple structure, the electric push rod 12 drives the teeth of the brake teeth 9 to mesh with the teeth of the brake wheel 7 through the connecting rod mechanism, the contact is close, the braking is fast, and the reliability is good; secondly, the utility model mainly arranges the chain breaking protection mechanism 3 on the channel frame 1, and is supported by the channel frame 1, the structure is more stable, and the connecting rod mechanism has good stability and high safety; thirdly, the direct driving force of the electric push rod 12 on the brake rod 8 and the brake tooth 9 is dispersed through the connecting rod mechanism, which is more labor-saving, safe and reliable than the electric push rod 12 directly driving the brake tooth 9; fourthly, the utility model is provided with a reset spring 13, and the brake rod 8 is pulled by the reset spring 13, so that the brake rod 8 always has a pulling force away from the brake wheel 7, ensuring the safe working state of the receiving port frame 2 and the reliable return of the brake tooth 9.

[0033] The utility model has the advantages of simple structure, fast and effective braking, good reliability, stable structure, high safety, etc. due to the adoption of the structure.

Claims

1. A chain break protection device for a boarding bridge receiving gate, comprising a channel frame (1) and a receiving gate frame (2), characterized in that: A chain-breaking protection mechanism (3) is provided between the channel frame (1) and the receiving port frame (2). The chain-breaking protection mechanism (3) includes a receiving port pull rod (4), a fixed rotating shaft (5), a bearing, a connecting seat (6), a brake wheel (7), a brake tooth (9), a link mechanism, and an electric push rod (12). The receiving port pull rod (4) is provided on the receiving port frame (2), and the fixed rotating shaft (5) is provided on the channel frame (1). The lower end of the fixed rotating shaft (5) is fixedly connected to the channel frame (1), and the fixed rotating shaft (5) is fixedly connected to the connecting seat (6) through the bearing. One end of the receiving port pull rod (4) is fixedly connected to the receiving port frame (2), and the other end is fixedly connected to the connecting seat (6). The brake wheel (7) is provided on the connecting seat (6), and the brake wheel (7) is fixedly connected to the connecting seat (6). A brake tooth (9) is provided on one side of the brake wheel (7), and the brake tooth (9) is engaged with the brake wheel (7). The brake tooth (9) is installed on the link mechanism, and the link mechanism is driven by the electric push rod (12). The electric push rod (12) is connected to the channel frame (1).

2. The chain break protection device for the boarding bridge pick-up port according to claim 1, wherein: The link mechanism includes a brake rod (8), a connecting rod (10), and a swing arm (11). One side of the brake rod (8) extends towards the direction of the brake wheel (7) to form a brake tooth (9), and the brake tooth (9) is fixedly connected to the brake rod (8). One end of the brake rod (8) is hinged to the channel frame (1), and the other end is provided with a connecting rod (10). One end of the connecting rod (10) is hinged to the brake rod (8), and the other end is provided with a swing arm (11). One end of the swing arm (11) is hinged to the brake rod (8), and the other end is hinged to the channel frame (1). The swing arm (11) is driven by the electric push rod (12).

3. The chain break protection device for the boarding bridge pick-up port according to claim 2, wherein: A return spring (13) is provided on the brake rod (8). One end of the return spring (13) is fixedly connected to the brake rod (8), and the other end is fixedly connected to the channel frame (1).

4. A boarding bridge access gate chain break protection device according to claim 2 or 3, characterized in that: On one side of the brake rod (8), there are a first support column (14), a second support column (15), and a third support column (16). The first support column (14), the second support column (15), and the third support column (16) are respectively fixedly connected to the channel frame (1). One end of the brake rod (8) is hinged to the first support column (14), the other end of the swing arm (11) is hinged to the second support column (15), and one end of the electric push rod (12) is hinged to the swing arm (11), and the other end is hinged to the third support column (16).

5. An apron bridge pick-up point chain break protection device according to claim 1 or 2 or 3, characterized in that: There are two receiving port pull rods (4), and a connecting block (17) is provided between the two receiving port pull rods (4). The connecting block (17) is fixedly connected to the two receiving port pull rods (4).

6. The chain break protection device for the boarding bridge pick-up port according to claim 1 or 2 or 3, characterized in that: A pressing plate (18) is provided at the upper end of the connecting seat (6). The upper end of the connecting seat (6) extends upwards to form a connecting shaft (19). The brake wheel (7) is sleeved on the connecting shaft (19) and fixedly connected to the connecting shaft (19). The pressing plate (18) covers the upper ends of the connecting shaft (19) and the brake wheel (7), and the pressing plate (18) is fixedly connected to the connecting shaft (19).

7. The boarding bridge receiving gate chain breaking protection device according to claim 4, characterized in that: An adjusting plate (20) is provided between the electric push rod (12) and the third support column (16). The adjusting plate (20) is provided with an adjusting long hole. One end of the adjusting plate (20) is fixedly connected to the third support column (16) through a screw and the adjusting long hole, and the other end is hinged to the electric push rod (12).

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