53results about How to "Quick smooth" patented technology

A drill attachment for smoothing the edges and corners of a concrete slab is disclosed. The drill attachment includes a shaft that is secured or chucked into an electric drill. Pluralities of troweling blades extend from the central shaft and are secured at their ends to maintain their position and orientation. The blades are secured to the trowel at variable or fixed angles that are changeable to suit the finishing need of the operator. In operation the drill attachment is used to smooth the ends and corners of a foundation where larger smoothing trowel machines have difficulty reaching. The power trowel is field installed and removed when needed for use, cleaning and storage. The drill attachment has an independently spinning blade cover extends over the ends of the blades to prevent damage to a wall or other surface when the trowel is in use.

The invention relates to a troweling device and a troweling robot. The troweling device comprises a troweling disc mechanism and a press polishing mechanism. The troweling disc mechanism comprises a troweling disc frame and a troweling disc body detachably arranged on the troweling disc frame, and the troweling disc body is used for performing rotary troweling operation on concrete ground. The press polishing mechanism comprises a lifting press assembly arranged on the troweling disc mechanism and a trowel rotatably connected with the lifting press assembly, and the lifting press assembly is used for driving the trowel to rotate to the position above the troweling disc body and be in clearance fit with the concrete ground, or driving the trowel to rotate to be in contact with the concreteground and perform press polishing operation. The troweling disc body rotates at a high speed, and can quickly trowel the concrete ground, and the flatness and smoothness of the troweling of the concrete ground are guaranteed. The trowel can perform press polishing operation on the concrete ground, ensures reliable compaction of the concrete, eliminates the defects of bubbles, gaps and the like, ensures high compaction degree, further flattens the surface, and ensures that the concrete ground has an excellent troweling effect.

The spin improvement string pliers is a pivotally secured together plier device used to manually restructure and roughen the surface of a synthetic or a polyester string on a strung tennis racquet by means of plastic deformation. The line grids on the pliers depress the string, leaving a series of indentations on the string surface that increases the friction between the string and the ball so that the tennis player can more easily generate top or under spin on a tennis ball.

An abrading and smoothing tool includes a handle element that is adapted to be easily grasped by the user and comfortably held in the palm of the hand, and which contains a small electrically-powered multi-speed motor. A segment of abrasive material, such as sandpaper, is removably attached to the hand held portion of the device by hook-and-loop fastener means to be easily removed from the device after use so that the abrasive material can be quickly and easily replaced.

An amplifier circuit with an overshoot suppress scheme is provided. The amplifier circuit includes an input amplifier, an output amplifier and a diode device. The output amplifier is coupled to the input amplifier and outputs an output voltage. The diode device is coupled between an output end and an input end of the output amplifier. When a voltage difference between the output end and the input end of the output amplifier is greater than a barrier voltage of the diode device, the diode device is turned on, and an overshoot of the output voltage is reduced.

The invention relates to a troweling device and a troweling robot, comprising: a trowel mechanism, the trowel mechanism includes a trowel frame and a trowel body detachably arranged on the trowel frame, and the trowel body is used to rotate the concrete ground smoothing operation; and a calendering mechanism, the calendering mechanism includes a lifting component arranged on the wiper mechanism and a spatula rotatably connected with the lifting component, the lifting component is used to drive the spatula to rotate to the top of the wiper body and Match with the concrete floor gap, or drive the trowel to rotate to contact with the concrete floor and perform calendering operation. The trowel body rotates at high speed, which can quickly smooth the concrete floor to ensure the smoothness and smoothness of the concrete floor; the trowel can perform calendering operations on the concrete floor to ensure reliable compaction of the concrete, eliminate defects such as air bubbles and gaps, and ensure High degree of compression, while further leveling the surface, to ensure that the concrete floor has an excellent smoothing effect.

The invention belongs to the field of gear processing, in particular to a gear end face grinding device for gear processing. Aiming at the problems that the existing gear end face grinding efficiency is low and it is inconvenient to process waste during grinding, the following proposal is now proposed, It includes a placement seat, a placement table is fixedly installed on the top of the placement seat, a first grinding plate is provided on the top of the placement table, a second grinding plate is provided above the first grinding plate, and a pushing plate is provided on the top of the second grinding plate. A column, the top of the placement seat is fixedly installed with a frame, the bottom of the frame is rotatably installed with an annular plate, the bottom of the annular plate is fixedly installed with a fixed plate, and a through hole is opened on the fixed plate, and the bottom of the push column penetrates through the hole. Two push plates are slidingly installed on the bottom of the fixed plate. The invention can simultaneously grind the two end faces of the gear, improve the grinding efficiency, and can collect and process the grinding waste and dust. The structure is simple and easy to use.

The invention discloses a troweling device for building construction, which comprises a troweling plate, a motor, a switch, a storage battery and a handle. The four sides of the troweling plate are all provided with an upwardly tilted flange, and the flange is in the shape of an arc. Structural setting, the four flanges are connected end to end, the four flanges are arranged in a rectangular ring structure, a support rod is fixed vertically in the middle of the surface of the trowel, the handle is set above the trowel, and the motor is fixedly installed at the lower end of the handle. The rotating shaft of the motor is set vertically downward, the motor is provided with a cover body covering the motor, the upper end of the cover body is fixedly connected with the handle, the lower end of the cover body is provided with a through hole, the upper end of the support rod extends into the cover body along the through hole, and is connected with the The rotating shaft on the motor is fixedly connected. The invention is simple in structure, easy to use, can effectively rotate the plastering plate while pushing the plastering knife, increases the contact area with the concrete, and can smooth the concrete faster, greatly increasing the working efficiency and reducing the increased work intensity.

An amplifier circuit with an overshoot suppress scheme is provided. The amplifier circuit includes an input amplifier, an output amplifier and a diode device. The output amplifier is coupled to the input amplifier and outputs an output voltage. The diode device is coupled between an output end and an input end of the output amplifier. When a voltage difference between the output end and the input end of the output amplifier is greater than a barrier voltage of the diode device, the diode device is turned on, and an overshoot of the output voltage is reduced.

A multifunctional automatic wall-face trowelling machine comprises an arc-shaped support, a transverse moving automatic adjusting device and a wall-face automatic trowelling device, wherein the transverse moving automatic adjusting device is fixed on the arc-shaped support, the wall-face automatic trowelling device comprises a scraping plate longitudinal adjusting device, a scraping plate angle adjusting device and a scraping plate up-and-down adjusting device, the scraping plate longitudinal adjusting device is arranged on the transverse moving automatic adjusting device, the scraping plate angle adjusting device is arranged on the upper portion of the scraping plate longitudinal adjusting device and comprises an adjusting arm, one end of the adjusting arm is hinged with a supporting arm, an adjusting device is arranged at the bottom of the adjusting arm, the scraping plate up-and-down adjusting device comprises a speed reduction motor and a transmission device, the speed reduction motor is connected with the transmission device through a transmission shaft arranged at the center, the transmission device is connected with a scraping plate support fixing mechanism, a scraping plate support is arranged on the scraping plate support fixing mechanism, and an upper cutter holder and a lower cutter holder are arranged on the scraping plate support. By the aid of the multifunctional automatic wall-face trowelling machine, rapid trowelling of wall faces can be achieved, and the engineering construction progress is accelerated.

The invention discloses a deformation-adaptive wall ash shoveling device of a water spray type self-cleaning mechanism, which comprises an ash shovel work box, a cleaning roller frame is arranged at the bottom of the front side of the ash shovel work box, and a Cleaning drum, the outer side of the cleaning drum is provided with shoveling pieces and cleaning blocks, the side of the cleaning drum frame is provided with a driving motor box, and the cleaning roller motor is installed inside the driving motor box, and the output shaft of the cleaning roller motor passes through A shaft coupling is fixedly connected with a cleaning drum, and the invention relates to the technical field of building construction. The water-spray self-cleaning mechanism's deformation-adaptive wall ash shoveling device solves the problem that the ash shoveling device cannot adapt to different lime environments on the wall for different transformations of shoveling ash, and a large amount of dust splashes during the ash shoveling process and easily causes workers' respiratory tract damage. , Different choices of rear side cleaning structure can adapt to different wall operating environments.