An electromagnetic chuck device for emergency feathering

Abstract

An electromagnetic chuck device for emergency feathering of the present invention belongs to the field of mechanical structure design. The electromagnetic chuck device includes an aviation socket, a cable one, a steady current resistor, a cable two, and an electromagnetic chuck; the governor housing is a cubic structure, and a through hole communicating with its interior is machined on the end face of the governor housing; among them, the aviation socket is installed in the through hole of the governor housing; the steady current resistor is installed on the outer side of the lower bottom surface of the governor housing; one end of the cable one is connected to the connecting aviation socket, and the other end of the cable one is connected to the steady current resistor; the electromagnetic chuck is installed on the inner side of the upper bottom surface of the governor housing; one end of the cable two is connected to the steady current resistor; the other end of the cable two is connected to the electromagnetic chuck. The electromagnetic chuck device is used for emergency feathering, with simple operation and reliable performance, and can replace the feathering device, reducing the weight of the propeller and saving the installation interface of the aircraft.

Description

Technical Field

[0001] An electromagnetic chuck device for emergency feathering of the present invention belongs to the field of mechanical structure design. Background Art

[0002] Propeller feathering is used in the case of an accidental engine shutdown in the air or other emergencies. The blade angle is changed to the maximum, and the blade is parallel to the direction of air movement, so that the resistance formed by the propeller in the air is minimized, enabling the aircraft to make an emergency gliding descent like a glider after losing power. It is the last barrier for the safety of propeller aircraft. Generally, a separate feathering device is required for the propeller system. However, the installation space for accessories on the aircraft is limited. Combining the feathering device with the speed governor can not only reduce the weight of the propeller system but also save the installation interface of the aircraft. Summary of the Invention

[0003] The object of the present invention is to solve the above problems existing in the prior art and provide a feathering device integrated on the speed governor and capable of safe and reliable manual control.

[0004] The technical solution of the present invention:

[0005] An electromagnetic chuck device for emergency feathering is applied to a propeller JST-2 speed governor. The JST-2 speed governor includes an oil pump assembly, a speed governor housing, a metering valve, a centrifugal counterweight assembly, a spring seat, and a governor spring. The oil pump assembly is fixed to the end face of the speed governor housing. The metering valve is installed in the hole of the speed governor housing. The centrifugal counterweight assembly is installed on the metering valve and rotates with it. The spring seat and the governor spring cooperate with the centrifugal counterweight assembly. It is characterized in that the electromagnetic chuck device includes an aviation socket, cable one, a steady current resistor, cable two, and an electromagnetic chuck. The speed governor housing is a cube structure, and a through hole communicating with its interior is machined on the end face of the speed governor housing. The aviation socket is installed in the through hole of the speed governor housing. The steady current resistor is installed on the outer side of the lower bottom surface of the speed governor housing. One end of cable one is connected to the aviation socket, and the other end of cable one is connected to the steady current resistor. The electromagnetic chuck is installed on the inner side of the upper bottom surface of the speed governor housing. One end of cable two is connected to the steady current resistor. The other end of cable two is connected to the electromagnetic chuck.

[0006] The aviation socket uses a five-pin plug.

[0007] The steady current resistor uses an aluminum shell resistor of 30 ohms and 5 kW.

[0008] The electromagnetic chuck uses an oil-resistant sealing structure.

[0009] The beneficial effect of the present invention: The present invention is a protective structure for the leading edge of a composite stator blade. By bonding a protective structure to the leading edge of the composite stator blade, the impact resistance and reliability of the stator blade are improved, and the service life of the composite material is greatly extended. Description of the Drawings

[0010] Figure 1 is a schematic structural diagram of an electromagnetic chuck device

[0011] Wherein: 1 - aviation socket, 2 - cable one, 3 - current stabilizing resistor, 4 - cable two, 5 - electromagnetic chuck, 6 - spring seat. Detailed Description of the Invention

[0012] The present invention will be further described in detail below with reference to the drawings.

[0013] An electromagnetic chuck device for emergency feathering is applied to a propeller JST-2 governor. The JST-2 governor includes an oil pump assembly, a governor housing, a metering valve, a centrifugal counterweight assembly, a spring seat, and a governor spring; the oil pump assembly is fixed on the end face of the governor housing; the metering valve is installed in the hole of the governor housing; the centrifugal counterweight assembly is installed on the metering valve and rotates with it; the spring seat and the governor spring cooperate with the centrifugal counterweight assembly. It is characterized in that the electromagnetic chuck device includes an aviation socket, a cable one, a current stabilizing resistor, a cable two, and an electromagnetic chuck; the governor housing is a cubic structure, and a through hole communicating with its interior is machined on the end face of the governor housing; wherein the aviation socket is installed in the through hole of the governor housing; the current stabilizing resistor is installed on the outer side of the lower bottom surface of the governor housing; one end of the cable one is connected to the aviation socket, and the other end of the cable one is connected to the current stabilizing resistor; the electromagnetic chuck is installed on the inner side of the upper bottom surface of the governor housing; one end of the cable two is connected to the current stabilizing resistor; the other end of the cable two is connected to the electromagnetic chuck.

[0014] The aviation socket uses a five-pin plug.

[0015] The current stabilizing resistor uses an aluminum shell resistor of 30 ohms and 5 kW.

[0016] The electromagnetic chuck uses an oil-resistant sealing structure.

[0017] As shown in the figure, the electromagnetic chuck device includes 1 - aviation socket, 2 - cable assembly one, 3 - current stabilizing resistor, 4 - cable assembly two, 5 - electromagnetic chuck, 6 - spring seat. The aviation socket can prevent internal electromagnetic energy radiation or interference from external electromagnetic fields, adopts a five-pin structure, and provides a stable power input for the entire device; the current stabilizing resistor is selected as an aluminum shell resistor of 30 ohms and 5 kW, which can prevent the electromagnetic chuck from being damaged due to excessive current during power on and off, has high precision and long service life; the electromagnetic chuck generates suction by using a stable current output. The spring seat located below the electromagnetic chuck moves towards the electromagnetic chuck under the action of the suction generated by the electromagnetic chuck, and the metering valve moves upward together with the spring seat to perform an oil circuit switch, realizing the emergency feathering function.

Claims

1. An electromagnetic chuck device for emergency feathering, which is applied to a JST-2 propeller governor. The JST-2 governor includes an oil pump assembly, a governor housing, a metering valve, a centrifugal counterweight assembly, a spring seat, and a governor spring; the oil pump assembly is fixed on the end face of the governor housing; the metering valve is installed in the hole of the governor housing; the centrifugal counterweight assembly is installed on the metering valve and rotates with it; the spring seat and the governor spring cooperate with the centrifugal counterweight assembly; it is characterized in that, The electromagnetic chuck device includes an aviation socket, cable one, steady current resistor, cable two, and electromagnetic chuck; the governor housing is a cubic structure, and a through hole communicating with its interior is machined on the end face of the governor housing; among them, the aviation socket is installed in the through hole of the governor housing; the steady current resistor is installed on the outer side of the bottom surface of the governor housing; one end of cable one is connected to the connecting aviation socket, and the other end of cable one is connected to the steady current resistor; the electromagnetic chuck is installed on the inner side of the upper bottom surface of the governor housing; one end of cable two is connected to the steady current resistor; the other end of cable two is connected to the electromagnetic chuck, and the electromagnetic chuck generates suction force by stable current output. The spring seat located below the electromagnetic chuck moves towards the electromagnetic chuck under the action of the suction force generated by the electromagnetic chuck, and the oil distribution valve moves upward together with the spring seat to perform oil circuit switching and realize the emergency feathering function.

2. The electromagnetic chuck device for emergency feathering according to claim 1, characterized in that The aviation socket uses a five-pin plug.

3. The electromagnetic chuck device for emergency feathering according to claim 1, characterized in that, The steady current resistor uses a 30-ohm 5-kilowatt steady current resistor.

4. The electromagnetic chuck device for emergency feathering according to claim 1, characterized in that, The electromagnetic chuck uses an oil-resistant sealing structure.

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