Abstract: This application relates to the field of warehousing and logistics technologies, and provides a shelving unit crossbar and a shelving unit. The shelving unit crossbar includes a bearing member and a guide member arranged on the bearing member. The guide member is located on a side of the bearing member. The bearing member is configured to support a bottom surface of goods. The guide member is configured to block a side of the goods. At least one of the bearing member and the guide member is provided thereon with at least one first connecting portion formed through stamping. The first connecting portion is configured to connect to a beam of the shelving unit.

Abstract: A shelving unit includes a shelving unit body, a guide rail, and a support base. The shelving unit body includes a plurality of columns and a plurality of beams. The plurality of columns extend along a vertical direction and are arranged at intervals along a first horizontal direction. Any beam of the plurality of beams is connected to at least two columns, and the plurality of beams are arranged at intervals along the vertical direction. The support base is connected to at least one beam of the plurality of beams and extends along a second horizontal direction, and the guide rail extends along the vertical direction. The guide rail is connected to the shelving unit body through the support base.

Abstract: The present disclosure provides a magnetic grinding device and a magnetic grinding control method, and relates to the field of machining. According to the device, a magnet platform of a grinding piece fixing table is connected with an electromagnet; the grinding piece fixing table is used for fixing a to-be-ground workpiece; an output end of a programmable power supply is connected with a coil of the electromagnet; a permanent magnet grinding rod is located above the to-be-ground workpiece; and a magnetic grinding control system is connected with the programmable power supply and is used for acquiring grinding points, on the to-be-ground workpiece, of the permanent magnet grinding rod, and controlling an output voltage of the programmable power supply by utilizing a removal amount of a blank workpiece surface shape of the to-be-ground workpiece, the grinding points and a pulse width modulation (PWM) control method.

Abstract: The present disclosure provides a magnetic grinding device and a magnetic grinding control method, and relates to the field of machining. According to the device, a magnet platform of a grinding piece fixing table is connected with an electromagnet; the grinding piece fixing table is used for fixing a to-be-ground workpiece; an output end of a programmable power supply is connected with a coil of the electromagnet; a permanent magnet grinding rod is located above the to-be-ground workpiece; and a magnetic grinding control system is connected with the programmable power supply and is used for acquiring grinding points, on the to-be-ground workpiece, of the permanent magnet grinding rod, and controlling an output voltage of the programmable power supply by utilizing a removal amount of a blank workpiece surface shape of the to-be-ground workpiece, the grinding points and a pulse width modulation (PWM) control method.

Abstract: Provided are a double-layer sound insulation and noise reduction device and an atomizer. The double-layer sound insulation and noise reduction device includes a noise reduction main body, a water baffle and a connecting member, the noise reduction main body includes an annular outer wall and an annular inner wall, the annular inner wall is spaced apart from the annular outer wall to form a sound insulation cavity, and the connecting member is connected between the annular inner wall and the annular outer wall; a side of the annular outer wall is provided with an outer wall ventilation opening, a side of the annular inner wall is provided with an inner wall ventilation opening communicating with the outer wall ventilation opening, and a bottom of the annular inner wall is formed with a water passing hole.