Abstract: A fastener driver includes a striking assembly including a striking member configured to strike a fastener; a drive assembly configured to drive the striking member, and an electric motor providing a driving force for at least the drive assembly. The drive assembly includes a drive wheel configured to engage with the striking member to drive the striking member to move along the extension direction of the striking member; a transmission box accommodating at least the drive wheel; and a fixed shaft non-rotatably mounted onto the transmission box to support the drive wheel.

Abstract: A fastener driver includes a striking assembly including a striking member configured to strike a fastener; a drive assembly configured to drive the striking member; and an electric motor providing a driving force for at least the drive assembly. The drive assembly includes a drive wheel configured to engage with the striking member to drive the striking member to move along the extension direction of the striking member; a transmission box accommodating at least the drive wheel; and a fixed shaft non-rotatably mounted onto the transmission box to support the drive wheel.

Abstract: A fastener driver includes a striking assembly including a striking member configured to strike a fastener; a drive assembly configured to drive the striking member; and an electric motor providing a driving force for at least the drive assembly. The drive assembly includes a drive wheel configured to engage with the striking member to drive the striking member to move along the extension direction of the striking member. The distance D from the centroid of the drive wheel to the rotation axis of the drive wheel is less than or equal to 1.5 mm.

Abstract: A fastener driver includes a firing pin, a piston connected to the firing pin, a driving member driving a striking assembly to move backward to a top dead center position, and an energy storage device driving the striking assembly to move forward to a bottom dead center position to output an impact force. The distance L3 between the top dead center position and the bottom dead center position is defined as the stroke of the striking assembly, the fastener driver is configured to drive a fastener within a preset length LA to move, and the ratio of the stroke of the striking assembly to the preset length is less than or equal to 1.5 to 1.

Abstract: A cordless fastening tool includes a housing; a magazine configured to accommodate fasteners; a firing device configured to guide the fasteners along a first direction; a battery pack; and a battery pack mounting portion connected to the housing and configured to detachably support the battery pack. The battery pack is configured to be mounted to the battery pack mounting portion along a second direction perpendicular to the first direction.

Abstract: An electric circular saw includes a housing, a motor including a motor shaft enabled to rotate about a first rotation axis, and a transmission assembly including a first transmission member and a second transmission member. The motor shaft has a first end and a second end oppositely arranged in a longitudinal direction and the first transmission member is mounted to the second end of the motor shaft. In a coordinate system having an origin defined by a point on a center line of the second transmission member, a positive direction of an X axis defined by a forward direction of the electric circular, and a positive direction of a Y axis defined by an upper side of the electric circular saw, the second end of the motor shaft is arranged in a first quadrant of the coordinate system.

Abstract: A tool attachment device for assisting a power tool in performing nailing includes a shell assembly, a rocker, a connection device, a driving wheel, and a transmission assembly. A side of the shell assembly is formed with a hole passage. The rocker is partially placed in the hole passage and is rotatable in the hole passage. The connection device is connected to the rocker and rotates synchronously with the rocker. Nail feeding structures are formed on the driving wheel along a circumferential direction of the driving wheel. The transmission assembly is connected to the driving wheel and the connection device and is configured to drive the driving wheel to rotate unidirectionally. The transmission assembly is disposed between the connection device and the driving wheel.

Abstract: A nail gun includes: a housing; an accessory box for accommodating a fastener and at least partially connected to the housing; and a power output portion for outputting a striking force to the fastener; and an operating member triggered to have at least a first position and a second position, where the nail gun has a maximum desired penetration depth when the operating member is operated to the first position, and the nail gun has a minimum desired penetration depth when the operating member is operated to the second position; and when the operating member switches from the first position to the second position, an angle by which the operating member rotates about a first straight line is less than or equal to 360°.

Abstract: The disclosure relates to the technical field of food processing, particularly to a grilling method for controlling the content of polycyclic aromatic hydrocarbons in charcoal grilled meat. The grilling method comprises: Step 1, dispensing to-be-grilled meat into boxes with sealing covers, and adding edible oil into the boxes, wherein a ratio of edible oil to the weight of meat is 25˜50 mL/1000 g, and sealing the covers; Step 2, carrying out plasma treatment on the meat sealed in Step 1; and Step 3: placing the meat treated using plasma onto a grill and grilling. The grilling method for controlling the content of polycyclic aromatic hydrocarbons in charcoal grilled meat is simple, convenient, and easy to operate; it is not needed adding unessential food additives, thereby significantly reducing the content of polycyclic aromatic hydrocarbons in meat products, saving cost and improving safety while remaining the flavor of food itself.

Abstract: The disclosure relates to the technical field of food processing, particularly to a grilling method for controlling the content of polycyclic aromatic hydrocarbons in charcoal grilled meat. The grilling method comprises: Step 1, dispensing to-be-grilled meat into boxes with sealing covers, and adding edible oil into the boxes, wherein a ratio of edible oil to the weight of meat is 25˜50 mL/1000 g, and sealing the covers; Step 2, carrying out plasma treatment on the meat sealed in Step 1; and Step 3: placing the meat treated using plasma onto a grill and grilling. The grilling method for controlling the content of polycyclic aromatic hydrocarbons in charcoal grilled meat is simple, convenient, and easy to operate; it is not needed adding unessential food additives, thereby significantly reducing the content of polycyclic aromatic hydrocarbons in meat products, saving cost and improving safety while remaining the flavor of food itself.

Abstract: A tool attachment device for assisting a power tool in performing nailing includes a shell assembly, a rocker, a connection device, a driving wheel, and a transmission assembly. A side of the shell assembly is formed with a hole passage. The rocker is partially placed in the hole passage and is rotatable in the hole passage. The connection device is connected to the rocker and rotates synchronously with the rocker. Nail feeding structures are formed on the driving wheel along a circumferential direction of the driving wheel. The transmission assembly is connected to the driving wheel and the connection device and is configured to drive the driving wheel to rotate unidirectionally. The transmission assembly is disposed between the connection device and the driving wheel.

Abstract: An electric circular saw includes a housing, a motor including a motor shaft enabled to rotate about a first rotation axis, and a transmission assembly including a first transmission member and a second transmission member. The motor shaft has a first end and a second end oppositely arranged in a longitudinal direction and the first transmission member is mounted to the second end of the motor shaft. In a coordinate system having an origin defined by a point on a center line of the second transmission member, a positive direction of an X axis defined by a forward direction of the electric circular, and a positive direction of a Y axis defined by an upper side of the electric circular saw, the second end of the motor shaft is arranged in a first quadrant of the coordinate system.

Abstract: The invention relates to a device for online measurement of gas flowrate and liquid flowrate of a wet gas in a horizontal pipe, comprising the following parts: a horizontal Venturi tube, comprising a truncated cone-shaped inlet pipesection with section area reduced gradually, a cylindrical throat pipesection and a truncated cone-shaped outlet pipesection with section area increased gradually; and a gamma ray monitor, comprising a gamma ray emitter and a gamma ray detector arranged in a manner that gamma rays emitted by the gamma ray emitter can radially pass through the cross section of the throat pipesection to reach the gamma ray detector. The invention also relates to a method for online measurement of gas flowrate and liquid flowrate of a wet gas in a horizontal pipe by using above device.

Abstract: An extremely high water cut oil-gas-water three phase flow water removing device includes a mist eliminator (8), a fluid stabilizer (7), a liquid collection chamber (2), a fluid directing duct (5), an inlet connection pipe section (10), a gas outlet connection pipe section (9), a mixture liquid exit connection pipe section (4), a free water outlet connection pipe section (1). The function of the device is to effectively remove most of the free water from the high water cut oil-air-water three phase flow mixture liquid. An extremely high water cut oil-air-water three phase flow measurement apparatus and a measurement method using the water removing device are also disclosed.

Abstract: The invention relates to a device for online measurement of gas flowrate and liquid flowrate of a wet gas in a horizontal pipe, comprising the following parts: a horizontal Venturi tube, comprising a truncated cone-shaped inlet pipesection with section area reduced gradually, a cylindrical throat pipesection and a truncated cone-shaped outlet pipesection with section area increased gradually; and a gamma ray monitor, comprising a gamma ray emitter and a gamma ray detector arranged in a manner that gamma rays emitted by the gamma ray emitter can radially pass through the cross section of the throat pipesection to reach the gamma ray detector. The invention also relates to a method for online measurement of gas flowrate and liquid flowrate of a wet gas in a horizontal pipe by using above device.

Abstract: An extremely high water cut oil-gas-water three phase flow water removing device, which includes a mist eliminator (8), a fluid rectifier (7), a liquid collection chamber (2), a fluid directing duct (5), an inlet connection pipe section (10), a gas outlet connection pipe section (9), a mixture liquid exit connection pipe section (4), a free water outlet connection pipe section (1). Its function is to effectively remove most of the free water from the high water cut oil-air-water three phase flow mixture liquid. An extremely high water cut oil-air-water three phase flow measurement apparatus and a measurement method using the water removing device are also disclosed.