Abstract: A frame for an aircraft, and an aircraft. The frame includes: a body and a fixing assembly. The fixing assembly is provided on the body. The fixing assembly includes a fixing frame and a fastening frame spaced apart from each other in a first direction. The fixing frame has two first assembly slots spaced apart from each other in a second direction. Each first assembly slot is suitable for accommodating a first arm. The fastening frame includes two second assembly slots spaced apart from each other in the second direction. Each second assembly slot is suitable for accommodating a second arm. The first direction is perpendicular to the second direction. The structure of the frame is simplified, thereby facilitating assembly and disassembly of an arm of the aircraft.

Abstract: An unmanned aerial vehicle (UAV) frame includes: a body bearing plate configured to mount a first element and a second element; a transfer chamber body mounted to the body bearing plate, defining a connection cavity with an open end, and provided with a through hole in communication with the connection cavity, in which the first element and the second element are located outside the transfer chamber body. The through hole is configured to pass through a connection line of the first element and a connection line of the second element. The connection cavity is configured to receive a connection interface of the connection line of the first element and a connection interface of the connection line of the second element. A transfer chamber cover sealedly covers the open end of the transfer chamber body.

Abstract: A driving device, a spraying device having the driving device, and an unmanned aerial vehicle having the spraying device are provided. The driving device includes a driving assembly and an abutting assembly. The driving assembly includes a driving motor (31). The driving motor (31) has a driving shaft (32). The abutting assembly is connected to the driving assembly and exerts an acting force on the driving shaft (32) to abut against the driving shaft (32).

Abstract: A pump body assembly, a pump, a sprinkler system, and an unmanned aerial vehicle are provided, the pump body assembly including a drainage outlet on a pump housing and a valve body portion of a valve core member, where the valve body portion is elastic, and the valve body portion changes from a natural state to an elastic deformation state under an action of liquid in the pump housing, such that when the valve body portion is in the natural state, the valve body portion seals the drainage outlet of the pump housing, and when the valve body portion is in the elastic deformation state, the valve body portion does not seal the drainage outlet of the pump housing.

Abstract: An unmanned aerial vehicle is provided and includes: an unmanned aerial vehicle body, including an airframe and an articles storing device; an arm, including at least two front arms symmetrically arranged with respect to a central axis of the airframe along a front-rear direction and at least two rear arms symmetrically arranged with respect to the central axis of the airframe; and a rotor-wing electric motor, including a front electric motor and a rear electric motor. A first end of the front arm is connected with a front end of the airframe, and a second end of the front arm is provided with the front electric motor to drive the unmanned aerial vehicle. A first end of the rear arm is connected with a rear end of the airframe, and a second end of the rear arm is provided with the rear electric motor to drive the unmanned aerial vehicle.

Abstract: An unmanned aerial vehicle is provided and includes: an unmanned aerial vehicle body, including an airframe and an articles storing device; an arm, including at least two front arms symmetrically arranged with respect to a central axis of the airframe along a front-rear direction and at least two rear arms symmetrically arranged with respect to the central axis of the airframe; and a rotor-wing electric motor, including a front electric motor and a rear electric motor. A first end of the front arm is connected with a front end of the airframe, and a second end of the front arm is provided with the front electric motor to drive the unmanned aerial vehicle. A first end of the rear arm is connected with a rear end of the airframe, and a second end of the rear arm is provided with the rear electric motor to drive the unmanned aerial vehicle.