3results about How to "Practical to use" patented technology

The application discloses a chamfering device with a tool entanglement prevention mechanism for bolt machining, and belongs to the technical field of bolt machining. The chamfering device with the tool entanglement prevention mechanism for bolt machining comprises a base and a sliding seat fixedly installed on the surface of the base, a bolt body to be machined is placed above the sliding seat, the surface of the sliding seat is correspondingly provided with two sliding frames, the top surface of any one of the two sliding frames is fixedly provided with a fixing frame, the inner side surface of each of the two fixing frames is rotationally connected with a rotating column, and the surface of each of the two rotating columns is provided with an external thread. Compared with a traditional chamfering device, the chamfering device with the tool entanglement prevention mechanism for bolt machining adopts reciprocating rotary chamfering blades to simultaneously chamfer both ends of the bolt body, and the bolt ends do not need to be sequentially machined one by one, so that the machining steps of the bolt body are reduced, the machining speed of both ends of the bolt body is improved, and the machining efficiency of the bolt body is improved.

The application discloses a DC engineering reactive state change pre-judgment DC transmission power upper limit method, comprising the following steps: (S1) obtaining a preset reactive state; (S2) setting the running valve group power in the preset reactive state as a valve group limit transmission power value; (S3) performing control calculation according to a reactive control strategy; (S4) outputting a reactive control strategy calculation result; (S5) judging whether there is a reactive device switching, a control command and a reactive control mode switching command in the calculation result; if there is a corresponding command, updating the corresponding preset reactive device state and reactive control function setting value, and performing (S3); if there is no corresponding command, performing (S6); (S6) calculating the DC transmission power upper limit under the current preset reactive state according to the valve group state adjustment command in the calculation result; and (S7) outputting the DC transmission power upper limit under the current preset reactive state. The application has the advantages of no need of manual judgment and simulation resources, short time consumption, accuracy and reliability, convenience and practicality.

The utility model relates to the technical fields of roller shutter door accessories disclose a switching handle of clutch roller shutter door, including pull rod and fixed link, the one end of pull rod is provided with locking unit, the other end passes through first curved arm hinged fixed link one end, the fixed link is fixed on the wall, be provided with the connecting block that can reciprocatingly move on the fixed link, the one end of connecting block passes through second curved arm and pull rod interlink hinged, the other end is provided with steel rope connecting bolt, the switching handle of clutch roller shutter door can pass through key unlocking locking unit to can pull pull rod, make pull rod swing on fixed link through first curved arm, in the swing process, second curved arm pulls the connecting block and moves to one end direction, to make the connecting block pull the steel wire rope that is connected with clutch, need to reset, need not to adopt the traditional way that the steel wire rope is pushed into slowly, only need to pull back and reset the pull rod, make the connecting block reset can, use more convenient, practical.