Abstract: The present disclosure discloses a support device and a working machine arranged with the support device. The support device is configured to support an operating machine and includes: a telescopic member retractable in a length direction; an operating section mounting member connected to a first end of the telescopic member; and a power supply control member connected to a second end of the telescopic member, the first end and the second end being opposite to each other along the length direction; wherein the operating section mounting member is arranged with a plug-in interface; the power supply control member is configured to provide a power supply to the plug-in interface; the power supply control member includes a primary controller for controlling conduction of the power supply and a secondary controller for controlling activation of the operating machine.

Abstract: A hand-held electric chainsaw includes a housing, a chain guide, a saw chain, a motor, a hand guard, a protective cover, and a stop pin. The housing includes a grip section. The chain guide is connected to the housing. The saw chain is movable circumferentially along the periphery of the chain guide. The motor is drivingly connected with the saw chain. The hand guard is connected to the housing and disposed between the grip section and the saw chain. The protective cover covers and is located outside a part of the saw chain that moves from the housing in a direction away from the housing. The stop pin is disposed between the saw chain and the grip section, located outside a part of the saw chain that moves in a direction toward the housing, and oriented perpendicular to a circumferential movement direction of the saw chain.

Abstract: The present application discloses a blade mechanism and an electric scissors having the blade mechanism. The blade mechanism includes a setting blade, a moving blade, and a rotating shaft assembly. The rotating shaft assembly respectively passes through the setting blade and the moving blade to allow the setting blade and the moving blade being rotatablely connected. The cutting edge of the moving blade is automatically ground when the moving blade frictionally rotates relative to the setting blade. According to the present application, the moving blade and the setting blade of the blade mechanism open or close to generate friction, allowing the cutting edge of the moving blade to be automatically ground by the setting blade, thus the durability of the moving blade is improved.

Abstract: The present application discloses a dumbbell. The dumbbell includes: a hand-hold assembly, having a first channel and two opposite ends; two weight adjusting assemblies, rotatably connected with two ends of the hand-hold assembly respectively and rotated relative to the hand-hold assembly about a rotation axis; a plurality of weights, supported by the weight adjusting assembly; wherein, each weight adjusting assembly comprises a first cover connected with the end of the hand-hold assembly, a supporting base fixed to the first cover and having an upper sub-base and a lower sub-base spaced apart from the upper sub-base for forming a receiving space, and an engaging tube extending from the first channel into the receiving space and moved toward or away from the hand-hold assembly so that the engaging tube locks the weights or unlocks the weights.

Abstract: The present application discloses a dumbbell. The dumbbell includes: a hand-hold assembly, having a first channel and two opposite ends; two weight adjusting assemblies, rotatably connected with two ends of the hand-hold assembly respectively and rotated relative to the hand-hold assembly about a rotation axis; a plurality of weights, supported by the weight adjusting assembly; wherein, each weight adjusting assembly comprises a first cover connected with the end of the hand-hold assembly, a supporting base fixed to the first cover and having an upper sub-base and a lower sub-base spaced apart from the upper sub-base for forming a receiving space, and an engaging tube extending from the first channel into the receiving space and moved toward or away from the hand-hold assembly so that the engaging tube locks the weights or unlocks the weights.

Abstract: The present application discloses a blade mechanism and an electric scissors having the blade mechanism. The blade mechanism includes a setting blade, a moving blade, and a rotating shaft assembly. The rotating shaft assembly respectively passes through the setting blade and the moving blade to allow the setting blade and the moving blade being rotatablely connected. The cutting edge of the moving blade is automatically ground when the moving blade frictionally rotates relative to the setting blade. According to the present application, the moving blade and the setting blade of the blade mechanism open or close to generate friction, allowing the cutting edge of the moving blade to be automatically ground by the setting blade, thus the durability of the moving blade is improved.