Multiple protection safety boarding bridge hydraulic system
A multi-protection, hydraulic system technology, used in the safety of fluid pressure actuation systems, aircraft parts, mechanical equipment, etc., can solve problems such as high failure rate, aircraft damage, and hydraulic system instability
Inactive Publication Date: 2017-02-15
VATAPLE MACHINERY KUNSHAN
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Problems solved by technology
[0002] The boarding bridge belongs to the ground facilities of the airport. It is a safe passageway for passengers whose one end is fixed to the terminal building and the other end is retractable and connected to the aircraft. Because it needs to be connected to the aircraft, it must have extremely high safety and reliability. As its power The hydraulic system of the boarding bridge is the most important part of its safety guarantee. However, the hydraulic system of the boarding bridge on the market is unstable and has a high failure rate. poses a threat to the safety of the aircraft, and even damage to the aircraft
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[0021] Such as figure 1 As shown, the multi-protection safety type boarding bridge hydraulic system includes a fuel tank 2, a motor 3, a variable pump 4, an oil cylinder and a motor 10, the rotation of the motor 3 can drive the rotation of the variable pump 4, and draw from the fuel tank 3 The hydraulic oil also includes a counterbalance valve and a proportional valve 8. The counterbalance valve is located at the bottom of the oil cylinder and can continuously and reliably ensure the load supporting the boarding bridge. The variable pump 4 can distribute the hydraulic oil to all In the oil cylinder and the motor 10, the joint control of the variable pump 4 and the proportional valve 8 can save efficiency, reduce the temperature of the hydraulic oil, and meet the long-term operation requirements of the boarding bridge. An LS port 7 is installed on the proportional valve 8, and the LS port 7 can feed back the pressure signal to the variable pump 4 for the variable pump 4 to accu...
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The invention discloses a multi-protection safe boarding bridge hydraulic system which comprises an oil tank, an electrical machine, a variable pump, a counterbalance valve, an oil cylinder and a motor. The counterbalance valve is arranged at the bottom of the oil cylinder, the electrical machine rotates and can drive the variable pump to rotate, through the linkage control of the variable pump and a proportional valve, the variable pump can suck and distribute hydraulic oil, the hydraulic oil flows to all elements through the proportional valve, the stability of a boarding bridge in the advancing or ascending and descending process is improved, a return filter and a high-pressure filter are arranged, the hydraulic oil can be filtered immediately in a staging mode, and equipment faults are reduced. Meanwhile, an alarm is arranged, the problems can be found out immediately for adjustment, when the hydraulic system breaks down, the boarding bridge can be controlled by a manual pump to retreat, an electromagnetic ball valve controls the boarding bridge to stably descend, and the safety of the boarding bridge is improved.
Description
technical field [0001] The invention is applied to a boarding bridge with a structure of double leveling wheels, and in particular relates to a hydraulic system of a boarding bridge with multiple protections and safety. Background technique [0002] The boarding bridge belongs to the ground facilities of the airport. It is a safe passageway for passengers whose one end is fixed to the terminal building and the other end is retractable and connected to the aircraft. Because it needs to be connected to the aircraft, it must have extremely high safety and reliability. As its power The hydraulic system of the boarding bridge is the most important part of its safety guarantee. However, the hydraulic system of the boarding bridge on the market is unstable and has a high failure rate. poses a threat to the safety of the aircraft, and even damage to the aircraft may occur. Contents of the invention [0003] In order to solve the above technical problems, we propose a multi-protec...
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IPC IPC(8): F15B11/02F15B11/17F15B20/00B64F1/305
Inventor 谢加成张海飞蒋俊龙
Owner VATAPLE MACHINERY KUNSHAN