Abstract: The present invention relates to a method and an apparatus for recording a flight log of an unmanned aerial vehicle (UAV), a storage medium and a computer device. A log message is generated, the log message is stored in a message storage area, and a buffer area obtains the log message in the message storage area. The log message buffered in the buffer area is written into a memory card when the log message buffered in the buffer area meets any of the following conditions. The conditions include: the log message buffered in the buffer area occupies a storage capacity that reaches a capacity threshold or the log message is buffered in the buffer area for a number of times that reaches a threshold number of times. Each log message is generated independently and each generated log message is written into the buffer area. The event trigger mechanism has good real-time performance and can effectively reduce a probability of log message loss.

Abstract: The invention provides a rotary four-way reversing valve with low pressure drop and low leakage, comprising a valve body and a valve core arranged in the valve body through bearings. The valve body comprises a low-pressure exhaust tube, a high-pressure air inlet tube, a condenser tube and an evaporating tube. The valve core is slantingly divided by a U-shaped seal ring with a spring into a high-pressure chamber and a low-pressure chamber that are not communicated with each other. The valve core comprises a through hole arranged in the high-pressure chamber and aligned with the high-pressure air inlet tube of the valve body and an opening aligned with the condenser tube or the evaporating tube, an opening arranged in the low-pressure chamber and always aligned with the low-pressure exhaust tube and an opening aligned with the condenser tube or the evaporating tube.

Abstract: The invention discloses a rotation-type flow path switching valve, which includes a driving component and a valve body component connected with a driving shaft. The valve body component includes a valve body, and a spool. The valve body component further includes: a driving disc, and a driven disc which is connected, by means of a first gap linkage mechanism, with the driving disc to transfer an axial movement within a preset swivel stroke of the driving disc. The driving shaft and the spool are connected by means of a second gap linkage mechanism to transfer the axial movement to the spool within a preset swivel stroke of the driving shaft. The valve body component further includes a spring which makes the spool abut against the valve body.

Abstract: The invention discloses a rotation-type flow path switching valve, which includes a driving component and a valve body component connected with a driving shaft. The valve body component includes a valve body, and a spool. The valve body component further includes: a driving disc, and a driven disc which is connected, by means of a first gap linkage mechanism, with the driving disc to transfer an axial movement within a preset swivel stroke of the driving disc. The driving shaft and the spool are connected by means of a second gap linkage mechanism to transfer the axial movement to the spool within a preset swivel stroke of the driving shaft. The valve body component further includes a spring which makes the spool abut against the valve body.

Abstract: The invention provides a rotary four-way reversing valve with low pressure drop and low leakage, comprising a valve body and a valve core arranged in the valve body through bearings. The valve body comprises a low-pressure exhaust tube, a high-pressure air inlet tube, a condenser tube and an evaporating tube. The valve core is slantingly divided by a U-shaped seal ring with a spring into a high-pressure chamber and a low-pressure chamber that are not communicated with each other. The valve core comprises a through hole arranged in the high-pressure chamber and aligned with the high-pressure air inlet tube of the valve body and an opening aligned with the condenser tube or the evaporating tube, an opening arranged in the low-pressure chamber and always aligned with the low-pressure exhaust tube and an opening aligned with the condenser tube or the evaporating tube.

Abstract: The present invention provides an apparatus for automatic connection between an automobile diagnostic device and a VCI device and a method for the automatic connection. The method includes the steps of: periodically connecting the VCI device with at least one of a plurality of connection modes in pre-stored connection records when the automobile diagnostic device is started; and, when successfully connecting the VCI device with a successful connection mode, communicating with the VCI device with the successful connection mode. The method and apparatus according to this invention significantly improve the operation efficiency and user experience of the automobile diagnostic device.

Abstract: The present invention provides an apparatus for automatic connection between an automobile diagnostic device and a VCI device and a method for the automatic connection. The method includes the steps of: periodically connecting the VCI device with at least one of a plurality of connection modes in pre-stored connection records when the automobile diagnostic device is started; and, when successfully connecting the VCI device with a successful connection mode, communicating with the VCI device with the successful connection mode. The method and apparatus according to this invention significantly improve the operation efficiency and user experience of the automobile diagnostic device.

Abstract: The invention provides a hard seal plug valve, comprising a valve body, wherein a tapered plug is arranged in the valve body, a bonnet is arranged at an upper part of the valve body, a drive valve rod penetrates the bonnet, an elastic hold-down mechanism is sheathed on the drive valve rod and arranged on a plug bearing seat, the plug bearing seat is connected with the tapered plug, and the plug bearing seat is held down when the elastic hold-down mechanism extends; and the hard seal plug valve characterized in that a telescopic mechanism is sheathed on the drive valve rod, the plug bearing seat is pushed upward when the telescopic mechanism extends, a valve rod bearing seat is arranged at the bottom of the drive valve rod, ends of the valve rod bearing seat pass through a planetary reduction mechanism, and the tapered plug is connected with the planetary reduction mechanism and rotates with the drive valve rod by the planetary reduction mechanism.

Abstract: The invention provides a hard seal plug valve, comprising a valve body, wherein a tapered plug is arranged in the valve body, a bonnet is arranged at an upper part of the valve body, a drive valve rod penetrates the bonnet, an elastic hold-down mechanism is sheathed on the drive valve rod and arranged on a plug bearing seat, the plug bearing seat is connected with the tapered plug, and the plug bearing seat is held down when the elastic hold-down mechanism extends; and the hard seal plug valve characterized in that a telescopic mechanism is sheathed on the drive valve rod, the plug bearing seat is pushed upward when the telescopic mechanism extends, a valve rod bearing seat is arranged at the bottom of the drive valve rod, ends of the valve rod bearing seat pass through a planetary reduction mechanism, and the tapered plug is connected with the planetary reduction mechanism and rotates with the drive valve rod by the planetary reduction mechanism.

Abstract: This invention relates to a floating conical plug valve comprising the valve body with a path for medium passing by, the conical valve chamber which is intersected into the said path perpendicularly, a conical valve core which can be turned, inserted in valve chamber, used for cutting off the said path in case of valve closed, a valve stem for turning of the valve core and a spring fitted between the bottom of the valve core and the valve chamber, the valve cap is on the top of the valve body which characterized in that the said valve core features a floating conical plug valve core which can be moved up and down within the valve chamber, there is a rotational transmission sleeve on the top of the valve core, with the torque limited sliding block and the torsion transmission pin outside of the valve stem, the rotational telescopic inner sleeve matched up and by screw thread is fitted between the rotational transmission sleeve and the valve stem, there is the telescopic outer sleeve outside of the telescopic i