Abstract: A drilling device for a reinforced concrete bored pile includes drilling masts, a scalable drill rod, a rotary drill bit, a rectangular cutter and scalable cutter rods. A top end of the scalable drill rod is connected to the drilling masts, the rotary drill bit is disposed on a bottom end of the scalable drill rod, the rectangular cutter is disposed above the rotary drill bit and defines a first drill rod hole, the scalable drill rod is disposed to pass therethrough. Bottom ends of the scalable cutter rods are connected to the rectangular cutter, and top ends of the scalable cutter rods are connected to a horizontal constraint platform, on which an impact component is provided. The horizontal constraint platform is disposed below the top end of the scalable drill rod, and the scalable drill rod passes through the horizontal constraint platform and the impact component.

Abstract: The disclosure relates to the technical field of computer processing, and discloses a method, an apparatus, a device and a storage medium for processing playing loudness of media data. The method according to the disclosure comprises obtaining media data to be played and an audio feature of the media data to be played; obtaining loudness requirement information, wherein the loudness requirement information comprises a current playing environment and/or an attribute of a playing device; determining loudness processing information for the media data to be played based on the audio feature and the loudness requirement information; and processing the media data to be played based on the loudness processing information to obtain target media data for playing.

Abstract: A moving apparatus used in liquid, a cleaning device, and a cleaning device control method are disclosed. The moving apparatus used in liquid includes a forward portion, a rearward portion, and a mode switching member. The mode switching member is configured to perform a position-and-posture switching of the moving apparatus below or above a liquid surface. When the moving apparatus is located below the liquid surface, the moving apparatus entirely submerges below the liquid surface. When the moving apparatus is located above or on the liquid surface, the moving apparatus is at least partially exposed above the liquid surface. Through the above method, the present disclosure may realize the cleaning of a liquid environment in an all-round way.

Abstract: A sound transmission method. The sound transmission method includes: according to a plurality of rays emitted to the periphery with an sound source as a center, determining an intersection point set of the plurality of rays and a wall of a building; estimating an sound transmission model of the building according to the intersection point set; and, by means of the sound transmission model, estimating a transmission condition in the wall of the sound emitted by the acoustic source. Also disclosed are a sound transmission apparatus, a non-volatile computer-readable storage medium, a computer program, and a computer program product.

Abstract: The present disclosure provides a moving device used in liquid. The moving device includes a mode switching member configured to achieve a position switching of the moving device between a first motion mode and a third motion mode by adjusting the buoyancy or drive force of the moving device; the said first motion mode is that the moving device moving on the bottom wall or the main direction of the moving device as a whole at an angle less than 90° from the bottom wall and away from the liquid surface; the said third motion mode is that moving device moving on the liquid surface, or the moving device at least partially emerging from the liquid surface, or the moving device located integrally below and near the liquid surface. And further provides a cleaning robot comprises the mentioned moving device to improve the cleaning efficiency.

Abstract: The present disclosure provides a device for in-water automatic spreading configured to spread a medicament in a water body. The device includes a storage module configured to store a medicament to be spread and a driving module configured to drive the medicament to be spread to be separated from the storage module. The driving module is connected with the storage module. The device may also include a medicament outlet configured as an outlet for the medicament to be spread to enter a liquid after being separated from the storage module, a walking module configured to drive the device for in-water automatic spreading to move in the water body according to a walking route, and a control module configured to control the driving module and the walking module. The control module is connected with the driving module and the walking module.

Abstract: Some embodiments of the present invention provide a robotic pool cleaner. The robotic pool cleaner includes a shell and a water pressure sensing mechanism. The water pressure sensing mechanism is disposed in a non-negative pressure area of the shell. The water pressure sensing mechanism includes a sensor. The sensor is disposed inside the shell. The sensor is configured to sense a water pressure at a position where the sensor is disposed.

Abstract: Some embodiments of the present disclosure provide a transmission device and a pool cleaning robot. The transmission device includes a driving member, a first driven member, and a second driven member; where an output end of the driving member is configured to be in driving connection with a wheel assembly of the pool cleaning robot; the first driven member is in driving connection with the wheel assembly, where an output end of the first driven member is configured to be connected with a first cleaning member of the pool cleaning robot, and the wheel assembly drives the first driven member to rotate; and the second driven member is in driving connection with the wheel assembly, where an output end of the second driven member is configured to be connected with a second cleaning member of the pool cleaning robot, and the wheel assembly drives the second driven member to rotate.

Abstract: Disclosed in the present invention is a method for preparing 2-iodo aryl ether under the action of alkali metal hydride: adding alkali metal hydride and phenol to a solvent, then adding 1,2-diiodoarene, and reacting at 0-100° C. to obtain a 2-iodo aryl ether product. The coupling process of the present invention does not require the addition of a transition metal catalyst, and does not cause metal contamination to the product; the method of the present invention can be performed at room temperature and has high functional group compatibility, and solves the problem that existing metal-catalysed coupling to aryl ether reactions need to be performed at a relatively high temperature.

Abstract: Some embodiments of the present invention provide a robotic pool cleaner. The robotic pool cleaner includes a shell and a water pressure sensing mechanism. The water pressure sensing mechanism is disposed in a non-negative pressure area of the shell. The water pressure sensing mechanism includes a sensor. The sensor is disposed inside the shell. The sensor is configured to sense a water pressure at a position where the sensor is disposed.

Abstract: Some embodiments of the present disclosure provide a pool cleaning system. The pool cleaning system includes a pool cleaning robot, a power supply mechanism, and a water surface cleaning mechanism. The pool cleaning robot can clean at least one of a bottom surface, wall surfaces, a water surface of a pool. The power supply mechanism is electrically connected with the pool cleaning robot. The water surface cleaning mechanism is electrically connected with the power supply mechanism and is disposed on the power supply mechanism. When the pool cleaning robot is in a working state, the power supply mechanism is capable of floating on the water surface, and the water surface cleaning mechanism is capable of being configured to recycle garbage floating on the water surface.

Abstract: Some embodiments of the present invention provide a robotic pool cleaner. The robotic pool cleaner includes a shell and a water pressure sensing mechanism. The water pressure sensing mechanism is disposed in a non-negative pressure area of the shell. The water pressure sensing mechanism includes a sensor. The sensor is disposed inside the shell. The sensor is configured to sense a water pressure at a position where the sensor is disposed.

Abstract: Some embodiments of the present disclosure relate to a technical field of pool cleaning robots, and in particular to a pool cleaning robot. The pool cleaning robot includes a housing and a control board. The housing is internally disposed with a first sealed chamber. The control board is connected with the first sealed chamber through a suspension arm; the control board is disposed in a first direction, so that the control board is kept parallel to a bottom of the housing; and an inertial measurement unit (IMU) module is disposed on the control board, and an accelerometer and a gyroscope are disposed in the IMU module.

Abstract: The present disclosure provides a device for in-water automatic spreading configured to spread a medicament in a water body. The device includes a storage module configured to store a medicament to be spread and a driving module configured to drive the medicament to be spread to be separated from the storage module. The driving module is connected with the storage module. The device may also include a medicament outlet configured as an outlet for the medicament to be spread to enter a liquid after being separated from the storage module, a walking module configured to drive the device for in-water automatic spreading to move in the water body according to a walking route, and a control module configured to control the driving module and the walking module. The control module is connected with the driving module and the walking module.

Abstract: The present disclosure provides a moving device used in liquid. The moving device includes a mode switching member configured to achieve a position switching of the moving device above a liquid surface and below the liquid surface. When the moving device is below the liquid surface, the moving device is fully submerged below the liquid surface, and when the moving device is above the liquid surface, at least a portion of the moving device is above the liquid surface.

Abstract: Disclosed is a method for preparing a 2-iodoheterocyclic aryl ether at room temperature, including adding an alkali metal hydride and a phenol to a solvent, then adding a diiodoheterocyclic aromatic hydrocarbon, and performing a reaction at 0-100° C., so as to obtain a 2-iodoheterocyclic aryl ether product. In the coupling process of the present invention, no transition metal catalyst needs to be added, and no metal pollution will be caused to the product. The product of the present invention can be used as an organic synthesis raw material for a further reaction, and can also be used as an additive flame retardant reagent to improve the flame retardant performance of plastics.

Abstract: Provided is an application of a metal hydride/palladium compound system in the preparation of a 1,3-dicarbonyl compound in a cascade reaction of an electron-deficient alkene compound, said reaction comprising the following steps: under the protection of nitrogen, a palladium compound and a metal hydride are suspended and stirred in a solvent, then an electron-deficient alkene compound is added; the mixture reacts at 0° C. to 100° C. for 0.3 to 10 hours; a saturated ammonium chloride aqueous solution is added to stop the reaction, and then extraction, drying by evaporation and purification by column chromatography are performed to obtain the product of 1,3-dicarbonyl compound. The hydride and palladium compound catalysts used in the method are reagents easily obtained in a laboratory; compared with the commonly used methods of hydrogenation with hydrogen gas, the method can be easily operated, and has high safety, mild conditions and high reaction yield.