36results about How to "Stop fast" patented technology

The invention discloses a side spool feeding device for wire spools. The device comprises a spool feeding mechanism, a base and a stranding body, and the spool feeding mechanism and the stranding bodyare arranged at the two ends of the top of the base. According to the device, the fan-shaped toothed plate transmission is adopted to replace existing screw rod transmission, so that the problems that a screw rod transmission structure is large in occupied space, not attractive and low in transmission efficiency are solved, and the effects that the side spool feeding mechanism is compact in structure, attractive in appearance and high in transmission efficiency are achieved; after locking plates rotate, the bottom ends of the locking plates abut against the top ends of the wire spools on theupper portions of bearing plates, and then the wire spools are limited so that the wire spools can be stably limited on the upper portions of the bearing plates and not prone to shaking and falling; and electric telescopic columns are used for driving the locking plates to rotate, the locking plates do not need to be manually moved, the multiple locking plates can rotate at the same time, and therotating angles are consistent, so that the working efficiency is improved, and the operation is easy.

The invention discloses a device for quickly measuring the water flow force of a ship in an experimental harbor basin, which includes a plurality of support rods, which are vertically arranged in the experimental harbor basin, pulleys are installed on the tops of the support rods, and flow isolation is provided on the liftable suspension on the pulleys. The flow isolator is sleeved on the outside of the support rod through a pulley. A ship model is arranged in the area surrounded by the support rods, a guide rail is vertically arranged on the ship model, a rotator that can drive the guide rail to rotate is installed on the top of the guide rail, and the rotator is fixedly connected with the support rod. A pressure sensor is installed on the ship model, and a current meter and a wave height meter are arranged in the area surrounded by the flow isolator, and the pressure sensor, the current speed meter and the wave height meter are all connected to the computer. The present invention can realize fast stillness of the internal flow field through the lifting and lowering of the flow isolator, improve the test efficiency and accuracy, and fully consider the influence of terrain and water level changes on the ship's water flow force, and provide for ship line design and wharf mooring design. A fast and effective test comparison scheme was established.

The invention relates to a brushless DC vibration motor which is characterized in that a vibrator on a rotor is fixed between a bracket and a permanent magnet, so that the upper and lower sides of the vibrator are firmly fixed; the weight of the vibrator can be increased corresponding to the area of the upper end of the permanent magnet, and thus the vibrator facilitates increasing the amount of vibration; the upper and lower ends of a bearing joint are provided with a snap holder which prevents the bearing from being disengaged, and a slotted metal sheet mounting part of a lower casing uses tooth slot shape rather than holes, thereby increasing the overall supporting force of the lower casing; a boss preventing the disengagement of a metal sheet is arranged on the upper end of a slotted metal sheet mounting slot, so that the metal sheet can be firmly stuck to the lower casing; slotted metal sheets are integrated and can be simply plugged into the lower casing for one time, so that the area of the slotted metal sheets is optiized, ejection of the rotor can be inhibited when a motor starts, friction noise with an upper casing can be prevented, the stopping speed of the rotor in rotation can be increased, residual vibration can be eliminated, and an even horizontal plane of the rotor in rotation can be ensured.

The invention discloses an independent jet flow internal cooling grinding wheel. The grinding wheel comprises a grinding wheel body, and a grinding part; the grinding wheel body is opened downwards toform an inner cavity; a connecting part is arranged at the upper end of the grinding wheel body, the connecting part is connected with a cutter handle of a grinding machine, the grinding part is arranged on the bottom of the grinding wheel body, the grinding wheel further comprises a spraying device, the spraying device is arranged on the top of the inner cavity of the grinding wheel body and comprises a spraying cavity, a cavity pressure applying module, a liquid inlet, and a liquid spraying opening, the spraying cavity is of a cavity structure, and is arranged on the top of the inner cavityof the grinding wheel body, the cavity pressure applying module is arranged in the spraying cavity and is located on the top of the spraying cavity, the liquid inlet is formed in the spraying cavity,and communicates with a cooling liquid supply part, the liquid spraying opening is formed in the spraying cavity, the liquid spraying opening communicates with the inner cavity of the grinding wheelbody and the spraying cavity, the liquid spraying opening points to the grinding machining face, and cooling liquid is sprayed to the grinding machining face through the spraying opening. The problemsthat a traditional internal cooling type grinding wheel internal runner is difficult to machine, the machining cost is high, and the maximum spraying speed is limited are solved.

The invention relates to a brushless direct current vibration motor, and the brushless direct current vibration motor has the characteristics that a vibrator on a rotor is fixed between a rack and a permanent magnet so that the upper surface and the lower surface of the vibrator are firmly fixed; the weight of the vibrator can increase the upper end area of the permanent magnet so that the vibrator is beneficial for increasing vibration amount; the upper end and the lower end of a bearing combination part have a clamp for preventing the bearing from getting off; the installation part of a cogged metal sheet of a lower case has a groove shape and isn't pierced, so that the integral supporting force of the lower case is increased; the upper end of the cogged metal sheet installation groove has a boss for preventing the metal sheet from getting off, so that the metal sheet is firmly stuck to the lower case. The cogged metal sheet is connected as a whole, so that the cogged metal sheet can be inserted in the lower case at one time. In this way, the cogged metal sheet area is optimized; the rotor is prevented from getting out when the motor is started; noise of friction with an upper case is prevented; speed for stopping the rotating rotor is improved; residual shaking is eliminated; and an even level of the rotating rotor is guaranteed.

The invention discloses a brake structure applied to an electric tool switch. The brake structure comprises a shell, wherein a push rod is arranged on the shell, a push rod inner end is arranged at one end of the push rod, a push rod outer end is arranged at the other end, a main spring is arranged between the push rod inner end and an inner wall of a rear side, a connection convex block is arranged on an outer side wall of one end, arranged in the shell, of the push rod, one end of the connection convex block is fixedly connected with an auxiliary rod, the periphery of the auxiliary rod is encircled by an annular body, a press spring sleeves the auxiliary rod and props against an inner wall of the annular body, a B+ terminal and a D terminal are arranged between the annular body and a front side plate, a conductive connection body is arranged at one end, facing the front side plate, of the annular body, the conductive connection body props against the B+ terminal and the D terminal under driving of the press spring when no external force is applied to the push rod, so that the B+ terminal and the D terminal are connected, the B+ terminal is electrically connected with a positive wiring terminal of a motor, and the D terminal is electrically connected with a negative wiring terminal of the motor. By the brake structure, inertia enable energy of the motor is rapidly released bya discharging mode, so that the motor is rapidly stopped rotating.

The invention relates to an indoor sanitary pipeline device, discloses a wash basin material composition, and solves the problems that a quartzite wash basin is high in shrinkage and easily deforms, so that the size of the wash basin is not standard, and the quality of the wash basin is affected. The technical scheme includes that the wash basin material composition comprises quartz powder, thermosetting unsaturated polymer resin and auxiliary materials. The wash basin material composition is characterized by further comprising glass fibers. The material composition comprises, in weight percent, 60-70% of quartz powder, 15-25% of thermosetting unsaturated polymer resin, 9-10% of glass fibers and 4-6% of auxiliary materials. According to the material composition, the wash basin does not easily deform, the size of the wash basin is more standard, and the quality of the wash basin is better.