Abstract: A method for determining a consistency coefficient of a power-law cement grout includes: determining a water-cement ratio of the power-law cement grout; according to engineering practice requirements, determining a time required to determine the consistency coefficient of the power-law cement grout; and obtaining the consistency coefficient of the power-law cement grout. The method is accurate and reliable, requires less calculation, etc.; and has very high practical value and popularization value in environmental protection and ecological restoration.

Abstract: A flatness detector includes a positioning plate, a positioning assembly arranged on a top surface of the positioning plate, a dial indicator arranged on the positioning assembly, and a sliding block. The positioning assembly includes a first positioning rod and a second positioning rod perpendicularly coupled together and pin-jointed. The dial indicator includes a detecting post maintained as a plumb line by the positioning assembly. The sliding block defines a groove for conforming to the detecting post. A measurement value of the dial indicator is obtained when the groove of the sliding block is conformed to the detecting post.

Abstract: A fixing apparatus for holding a circuit board in place includes a cover plate, a base for supporting the circuit board thereon, a connecting assembly for hinge-coupling a first end of the cover plate to the base, and a latching assembly for latching a second end of the cover plate to the base. The circuit board is held in place between the base and the cover plate.

Abstract: A method for removing vapors generated by a processing device presenting reduced risk to human handlers includes placing a vapor removing device in a feed area of the processing device. The vapor removing device includes a connecting plate and at least one vapor removing element each connected to one surface of the connecting plate. The vapor removing device is lifted robotically from the feed area and placed into the processing device. Then, the vapor removing element directly removes vapors generated by the processing device when the processing device starts to work, the device being robotically taken out of the processing device and placed back in the feed area.

Abstract: A storage container for a refrigerator includes a first storage box and a second storage box. The first storage box includes a first bottom wall and a first peripheral wall surrounding the first bottom wall. The first bottom wall and the first peripheral wall cooperatively define a first storage space. The second storage box includes a second bottom wall and a second peripheral wall surrounding the second bottom wall. The second bottom wall and the second peripheral wall cooperatively define a second storage space. The second bottom wall is formed by an extended portion of the first peripheral wall.

Abstract: A ball screw includes a screw, a nut, and at least one ball bearing. The screw includes a first helical tooth helically protruding from an outer surface of the screw. A ball groove is defined between adjacent portions of the first helical tooth. The nut includes a second helical tooth helically protruding from an inner surface of the nut. The nut is sleeved on the screw. A rolling groove is defined between adjacent portions of the second helical tooth. The first helical tooth occludes with the rolling groove. The second helical tooth occludes with the ball groove. The first helical tooth and the second helical tooth are alternately helically spaced. The first helical tooth and the second helical tooth cooperatively define a loading groove for receiving the at least one ball bearing.

Abstract: A flatness detector includes a positioning plate, a positioning assembly arranged on a top surface of the positioning plate, a dial indicator arranged on the positioning assembly, and a sliding block. The positioning assembly includes a first positioning rod and a second positioning rod perpendicularly coupled together and pin-jointed. The dial indicator includes a detecting post maintained as a plumb line by the positioning assembly. The sliding block defines a groove for conforming to the detecting post. A measurement value of the dial indicator is obtained when the groove of the sliding block is conformed to the detecting post.

Abstract: A fixing apparatus for holding a circuit board in place includes a cover plate, a base for supporting the circuit board thereon, a connecting assembly for hinge-coupling a first end of the cover plate to the base, and a latching assembly for latching a second end of the cover plate to the base. The circuit board is held in place between the base and the cover plate.

Abstract: A packing foam positioning jig for assembling a piece of packing foam to a workpiece includes a suction tube. The suction tube includes a rod body and a positioning seat. The rod body is coupled to the positioning seat. The rod body defines a suction channel. The positioning seat defines at least one suction hole. The at least one suction hole communicates with the suction channel. The positioning seat includes at least one positioning post protruded from an outer surface of the positioning seat. The piece of packing foam is sleeved on the at least one positioning post. The at least one suction hole suctions the piece of packing foam. The at least one positioning post and the at least one suction hole cooperate to assemble the piece of packing foam to the workpiece.

Abstract: A method for removing vapors generated by a processing device presenting reduced risk to human handlers includes placing a vapor removing device in a feed area of the processing device. The vapor removing device includes a connecting plate and at least one vapor removing element each connected to one surface of the connecting plate. The vapor removing device is lifted robotically from the feed area and placed into the processing device. Then, the vapor removing element directly removes vapors generated by the processing device when the processing device starts to work, the device being robotically taken out of the processing device and placed back in the feed area.

Abstract: A converter and an external keyboard having the converter are provided. The external keyboard can provide complete input to a mobile unit. The external keyboard further includes an input keyboard. The converter interconnects the input keyboard and a mobile phone. The converter comprises a plurality of first contact points. The input keyboard comprises a plurality of second contact points. Each first contact point abuts a second contact point. The converter transmit signals and translates to the mobile phone. When input keyboard is in operation, the converter converts at least one input signal from the input keyboard into the mobile phone.

Abstract: A product positioning device includes a support, a first guide rail, a second guide rail, a support platform, a latching device, and a driving device. The first guide rail and the second guide rail are positioned on the support. The support platform is configured to receive a product to be positioned. The support platform is movable to an end of the first guide rail. The latching device is movable to a position holding the product to be positioned against the support platform. The driving device is movable to a position nearer the support platform. The driving device is further slidably engaged with the second guide rail. The driving device moves to the driving device position as the support platform moves to the end of the first guide rail, and the latching device moves to the latching device position as the driving device moves to the driving device position.

Abstract: A label affixing machine includes a holder, a storing device, a storing device, a peeling device and a conveyer. The storing device, the peeling device and the conveyer are fixed in position on the holder. The picking device is coupled to the conveyer. The label includes a bottom board affixed under the label, the label affixing machine configured to affix the label on an object. The picking device is configured for picking the label. The peeling device includes a second fixing module fixed in position on the holder, a second moving module coupled to the second fixing module and a robotic arm fixed in position on the second moving module. The robotic arm is configured for clamping the bottom board and peeling the bottom board from the label. The conveyer moves the picking device and affixes the label on the object.

Abstract: A screwdriver includes a screw rod including a first end and a second end opposite to the first end. The screwdriver defines a screw slot on an external portion adjacent to the second end. The screwdriver further includes a screwdriver bit fixed to the first end of the screw rod, a resisting portion fixed to the second end of the screw rod, a handle placed over a portion of the screw rod adjacent to the second end. A movable element fixed to an inside wall of the handle and tightly closed to an inside surface of the screw slot, and an elastic element placed over the screw rod between the first end and the handle.

Abstract: An automatic film peeling machine for peeling a film adhered on a board, includes a workbench, a frame mounted on the workbench including a movable pushing block, a supporting plate mounted on the frame, a suction plate for locating the board on the supporting plate, and a peeling module. The peeling module includes a sliding member, a resisting member and a movable clamping member mounted on the sliding member. The clamping member includes a clamping portion with a plurality of vents. Air is blown out from the vents for rotating a movable un-adhered portion of the film into a space between the clamping portion and the resisting member. The clamping member is moved toward the resisting member for clamping the movable un-adhered portion. The pushing block is moved to push the sliding member away from the frame, for peeling the first film from the board.

Abstract: A label affixing machine includes a holder, a storing device, a storing device, a peeling device and a conveyer. The storing device, the peeling device and the conveyer are fixed in position on the holder. The picking device is coupled to the conveyer. The label includes a bottom board affixed under the label, the label affixing machine configured to affix the label on an object. The picking device is configured for picking the label. The peeling device includes a second fixing module fixed in position on the holder, a second moving module coupled to the second fixing module and a robotic arm fixed in position on the second moving module. The robotic arm is configured for clamping the bottom board and peeling the bottom board from the label. The conveyer moves the picking device and affixes the label on the object.

Abstract: An automatic film peeling machine for peeling a film adhered on a board, includes a workbench, a frame mounted on the workbench including a movable pushing block, a supporting plate mounted on the frame, a suction plate for locating the board on the supporting plate, and a peeling module. The peeling module includes a sliding member, a resisting member and a movable clamping member mounted on the sliding member. The clamping member includes a clamping portion with a plurality of vents. Air is blown out from the vents for rotating a movable un-adhered portion of the film into a space between the clamping portion and the resisting member. The clamping member is moved toward the resisting member for clamping the movable un-adhered portion. The pushing block is moved to push the sliding member away from the frame, for peeling the first film from the board.

Abstract: A product positioning device includes a support, a first guide rail, a second guide rail, a support platform, a latching device, and a driving device. The first guide rail and the second guide rail are positioned on the support. The support platform is configured to receive a product to be positioned. The support platform is movable to an end of the first guide rail. The latching device is movable to a position holding the product to be positioned against the support platform. The driving device is movable to a position nearer the support platform. The driving device is further slidably engaged with the second guide rail. The driving device moves to the driving device position as the support platform moves to the end of the first guide rail, and the latching device moves to the latching device position as the driving device moves to the driving device position.

Abstract: An auxiliary device includes a base, two rotatable arms, and an elastic member. The two arms are rotatably connected to the base and each includes a mating surface that defines a recess. The recesses of the two arms cooperatively form a through hole when the mating surface is in contact with each other. The through hole includes, from top to bottom, a first tapered hole portion, an annular groove, a second tapered hole portion, and a round hole portion. The annular groove is used to receive a head of a screw, and the round hole portion has a lateral surface is used to contact a shank of the screw to keep the screw upright. The elastic member is arranged between the two rotatable arms and applies a pushing force to the two rotatable arms.

Abstract: A screwdriver includes a screw rod including a first end and a second end opposite to the first end. The screwdriver defines a screw slot on an external portion adjacent to the second end. The screwdriver further includes a screwdriver bit fixed to the first end of the screw rod, a resisting portion fixed to the second end of the screw rod, a handle placed over a portion of the screw rod adjacent to the second end. A movable element fixed to an inside wall of the handle and tightly closed to an inside surface of the screw slot, and an elastic element placed over the screw rod between the first end and the handle.