Abstract: A method for 3D positioning in a subway construction site. The method includes: establishing a 3D coordinate system corresponding to a shaft area, and determining a coordinate of each UWB base station set in different layers of the shaft area; ranging a positioning label through each UWB base station; filtering and discarding error data from the ranging data; dividing the 3D coordinate system into a plurality of equal cube grids, selecting a preset number of UWB base stations from the set UWB base stations based on the filtered result, and determining a position record of the positioning label in each cube grid in turn based on coordinates of the selected UWB base stations and corresponding ranging data, and the center point coordinate of each cube grid; and determining a conclusion coordinate of the positioning label by voting based on the position record of each cube grid.

Abstract: The present invention relates to a handheld high-pressure cleaning machine, including: a main machine housing, allowing detachable attachment of a battery pack, where the main machine housing includes a main body portion; a liquid outlet; a first handle; a motor; and a pump, where a battery pack mounting portion includes a first battery pack mounting portion and a second battery pack mounting portion, and the battery pack includes a first battery pack and a second battery pack; and the first battery pack mounting portion and the second battery pack mounting portion are respectively disposed on left and right sides of a middle plane in a manner that a distance W2 between a leftmost edge of the first battery pack mounting portion and a rightmost edge of the second battery pack mounting portion is not greater than a width W1 of the main body portion.

Abstract: A nozzle device applied to a high-pressure cleaning machine is provided, including: a nozzle, including a nozzle casing, where a water outlet channel is provided in the nozzle casing, and a front end of the nozzle casing is provided with at least one liquid discharge port connecting with the water outlet channel; and an exhaust valve, connected to the nozzle casing, and including: a valve seat, provided with a valve cavity; and a valve core, movably arranged in the valve cavity; where the valve seat is provided with an air inlet hole and an air outlet hole, the water outlet channel and a main exhaust passage are arranged in parallel in the nozzle casing, and the valve core is movable relative to the valve cavity to a closed position for blocking the main exhaust passage and an open position for opening the main exhaust passage.

Abstract: A nozzle device applied to a high-pressure cleaning machine is provided, including: a nozzle, including a nozzle casing, where a water outlet channel is provided in the nozzle casing, and a front end of the nozzle casing is provided with at least one liquid discharge port connecting with the water outlet channel; and an exhaust valve, connected to the nozzle casing, and including: a valve seat, provided with a valve cavity; and a valve core, movably arranged in the valve cavity; where the valve seat is provided with an air inlet hole and an air outlet hole, the water outlet channel and a main exhaust passage are arranged in parallel in the nozzle casing, and the valve core is movable relative to the valve cavity to a closed position for blocking the main exhaust passage and an open position for opening the main exhaust passage.

Abstract: An adapter (112) for connecting a wiper blade to a drive arm, the adapter comprising two substantially parallel walls (28) connected together by at least one connecting element (30), said walls comprising first inner side faces (28a) between which said at least one connecting element extends, and outer side faces (28b) comprising protruding sliding guide patterns (132), characterised in that said patterns are divided into lines and columns.

Abstract: A rollover prevention system prevents a construction machine from rolling over. The rollover prevention system comprises a first angle detection unit (12) disposed adjacent to a turning joint (11) to detect a swing angle of the upper frame (5), a second angle detection unit (13) disposed on the upper frame to detect an angular movement of the upper frame, safety valves (40) disposed on flow passages (25, 32) communicating with hydraulic cylinders for a work attachment (10) and a swing motor (26) to control flows of working oil supplied to the hydraulic cylinders by opening and closing the flow passages in response to external signals, and an electronic controller (14) electrically connected to the first angle detection unit, the second angle detection unit, and the safety valves. The electronic controller comprises a barycenter calculating section (14a), a safety range determining section (14b), and a signal outputting section (14c). A rollover prevention method for a construction machine is also provided.

Abstract: A rollover prevention system prevents a construction machine from rolling over. The rollover prevention system comprises a first angle detection unit (12) disposed adjacent to a turning joint (11) to detect a swing angle of the upper frame (5), a second angle detection unit (13) disposed on the upper frame to detect an angular movement of the upper frame, safety valves (40) disposed on flow passages (25, 32) communicating with hydraulic cylinders for a work attachment (10) and a swing motor (26) to control flows of working oil supplied to the hydraulic cylinders by opening and closing the flow passages in response to external signals, and an electronic controller (14) electrically connected to the first angle detection unit, the second angle detection unit, and the safety valves. The electronic controller comprises a barycenter calculating section (14a), a safety range determining section (14b), and a signal outputting section (14c). A rollover prevention method for a construction machine is also provided.

Abstract: An adapter (112) for connecting a wiper blade to a drive arm, the adapter comprising two substantially parallel walls (28) connected together by at least one connecting element (30), said walls comprising first inner side faces (28a) between which said at least one connecting element extends, and outer side faces (28b) comprising protruding sliding guide patterns (132), characterised in that said patterns are divided into lines and columns.

Abstract: A Stevia rebaudiana plant is characterized by Rebaudioside A (RA) content of 6-20% dry weight and total steviol glycosides content of 15-28% dry weight in the leaf. The plant is developed using selective breeding technologies and identified by RAPD gene analysis.

Abstract: A new stevia variety is characterized by remarkably high levels of Rebaudioside C (RC), and developed by the use of non-GMO selective breeding technologies and wherein such variety is uniquely identified by RAPD gene analysis, and comprises from about 3-8% by weight RC in the leaf (leaf content) and from about 10-13% total steviol glycosides content (TSG) in in leaf (leaf content), both of which are exceptionally high.

Abstract: A new stevia variety is characterized by remarkably high levels of Rebaudioside A (RA), and developed by the use of non-GMO selective breeding technologies and wherein such variety is uniquely identified by RAPD gene analysis, and comprises at least about 7-20% by weight RA in the leaf (leaf content), and comprises about 15-28% by weight total steviol glycosides in the leaf.

Abstract: A method for breeding Stevia rebaudiana with a high content of RA comprises selecting the plants in the perfect stage with a high RA content as parents and hybridizing them to produce F1 generation seeds; stabilizing the traits of the F1 generation in the imperfect stage; producing F2 generation seeds by a backcross method and optionally producing F3 generation seeds by a further backcross method.

Abstract: The present invention relates to a portable blower-vacuum device which comprises a motor (3) operated by a switch (7) and located in a main body (2) and a fan (4) drivable by the motor. A vacuum nozzle (11) and a blower nozzle (12) are associated with the main body and the vacuum nozzle comprises a main portion (14a) extending in a direction of an axis (Z1) of the main portion and a terminal portion (14b) with an axis (Z2) angularly disposed with respect to the axis (Z1) of the main portion.

Abstract: A storage box for storing power tool bits comprises a container, a bit holder and a control device. The container defines a compartment in which is received the bit holder along a common rotary axis. The bit holder comprises a plurality of outwardly radial pockets for receiving bits. The control device selectively disengages from the bit holder so that the bit holder is rotational about the common axis to move the bits rotationally in and out of the compartment.

Abstract: The present invention relates to a portable blower-vacuum device which comprises a motor (3) operated by a switch (7) and located in a main body (2) and a fan (4) drivable by the motor. A vacuum nozzle (11) and a blower nozzle (12) are associated with the main body and the vacuum nozzle comprises a main portion (14a) extending in a direction of an axis (Z1) of the main portion and a terminal portion (14b) with an axis (Z2) angularly disposed with respect to the axis (Z1) of the main portion.

Abstract: A storage box for storing power tool bits comprises a container, a bit holder and a control device. The container defines a compartment in which is received the bit holder along a common rotary axis. The bit holder comprises a plurality of outwardly radial pockets for receiving bits. The control device selectively disengages from the bit holder so that the bit holder is rotational about the common axis to move the bits rotationally in and out of the compartment.