5results about How to "Avoid running without load" patented technology

The present application relates to a kind of wideband sander current collection reciprocating grinding method without detecting distance, whether the surface of the plate material to be ground needs reciprocating grinding, the main motor of wideband sander is equipped with current detector, the signal output end of the current detector is transmitted to PLC controller by wired or wireless mode, PLC controller is built-in main motor regrinding current parameter value, when the end of the plate material to be ground passes through the grinding head of wideband sander, PLC controller receives the current of main motor higher than the regrinding current parameter value set, and PLC controller instructs wideband sander to enter regrinding program;When the end of the plate material to be ground passes through the grinding head of wideband sander, the current of main motor received by PLC controller is lower than the regrinding current parameter value set, and the end of the plate material to be ground runs to the automatic stop of the outer frame of wideband sander, manually detects whether the grinding of plate material covers completely, if covering, then end;If not, adjust the height of conveying workbench and enter regrinding program.

The application relates to the technical field of household appliances, and discloses a cleaning brush and a control method thereof. The cleaning brush comprises a main machine, a handle and a machine head. The machine head is connected with the main machine and comprises a water tank and brush hairs. Cleaning medium is arranged in the water tank, and the brush hairs are arranged at the bottom of the water tank. An atomizing water spraying device is arranged at the bottom of the water tank and communicates with the inside of the water tank. The other end of the atomizing water spraying device is provided with a nozzle. The atomizing water spraying device is used for atomizing the cleaning medium and spraying the atomized cleaning medium to a surface to be cleaned and the brush hairs. Compared with the related art, the water tank and the atomizing water spraying device are integrated in the brush head, so that an additional handheld water pipe, a shower for humidification or frequent wetting of the brush hairs is not needed, the cleaning operation process is simplified, and the use convenience is remarkably improved.

The invention belongs to the technical field of wharf control, and particularly relates to a loading and unloading operation control method for a double-trolley quay crane, a terminal and a storage medium, and the method comprises the steps: extracting the position information of a ship unloading box from a received ship unloading operation instruction, and extracting the position information of a ship loading box from a received ship loading operation instruction; the shellfish position information comprises shellfish position numbers, shellfish position column numbers and shellfish position layer numbers; the ship unloading operation instructions of the same bay position number and the same bay position column are ranked from high to low according to the bay position layer numbers and the layer height, and a ship unloading queue is generated; sorting the shipping operation instructions of the same bay position number and the same bay position column from low to high according to bay position layer numbers and layer heights, and generating a shipping queue; through the strategy of unloading and loading at the same time, the main trolley and the portal frame trolley can carry out ship unloading and ship loading operation at the same time, the situation that in a traditional mode, half of no-load operation exists in each operation circulation quay crane is avoided, and therefore the utilization rate and the operation efficiency of the quay crane are remarkably improved.

The utility model provides a kind of chain scraper conveyor intermittent start-stop control device, it is related to material unloading structure technology, specifically discloses the intercommunication casing installed in the lower part of dust collector cone, one side of intercommunication casing is provided with mounting port, mounting port rotation is equipped with the material receiving plate for closing the opening place of dust collector cone lower part, the sidewall of material receiving plate is equipped with mounting shaft, the outer side wall of mounting shaft is equipped with counterweight, the positioner structure for adjusting the mounting position of counterweight is equipped on mounting shaft, the outer side wall of intercommunication casing is equipped with sensor, sensor is signal connected with the driving mechanism of chain scraper conveyor, chain scraper conveyor only starts when material accumulation reaches set threshold value, it is automatically stopped after conveying, avoid the no-load operation of equipment in no material state, significantly save electric energy and equipment loss.

The utility model discloses quick butt welding equipment for PVC (polyvinyl chloride) pipes, which comprises a base, a heating module, a clamping mechanism and a control system, guide rollers with V-shaped grooves are arranged at two ends of the base, and the quick butt welding equipment can adapt to axial positioning of different pipe diameters; the heating module is of a vertically symmetrical heating block structure, the inner surface of the heating module is covered with an elastic heat conduction pad, independent temperature control heating units are evenly distributed in the circumferential direction of the interior of the heating module, and accurate pressure control is achieved through a driving air cylinder. The clamping mechanism is provided with a bidirectional lead screw to drive a synchronously adjusted fixing clamp and is combined with a laser centering sensor to realize automatic alignment of the end face of the pipeline; the control system integrates temperature, pressure and photoelectric sensing modules and monitors welding parameters in real time. The equipment has the characteristics of rapid remodeling and multi-specification compatibility, the welding quality is improved through partition temperature control and a flexible heat conduction structure, and the problems that traditional PVC pipe welding is low in efficiency and large in alignment deviation are effectively solved.