8results about How to "Reduce electric shock" patented technology

The application discloses a kind of no-load tap changer switching device and control method thereof, including main controller, gear control module and gear verification module;Gear control module according to the instruction issued by receiving main controller, no-load tap changer is carried out gear shifting action, and feedback gear shifting execution state;Gear verification module according to the instruction issued by receiving main controller, complete the verification of electricity and discharge work before gear shifting operation;After gear shifting is completed, the gear state is verified;The application automatically completes the whole process operation of verification of electricity, discharge, gear shifting execution and gear shifting verification etc., and realizes no-load tap changer gear shifting operation automation.Compared with the traditional manual field gear shifting mode, operation process can be significantly simplified, power outage operation time is shortened, gear shifting controllability and reliability are improved, and manual operation and maintenance cost is reduced.

The invention relates to the technical field of cable foreign matter cleaning, in particular to a power transmission overhead line hanging foreign matter cleaning device and method based on an unmanned aerial vehicle, the cleaning device comprises an unmanned aerial vehicle body and a seat body, the seat body is fixedly connected with the unmanned aerial vehicle body, and the cleaning device is characterized in that the seat body further comprises a mechanical arm, a replaceable clamping jaw and a control mainboard (2); the mechanical arm has multiple degrees of freedom and is used for connecting the seat body and the clamping jaw; the clamping jaw is used for clamping and cleaning foreign matters, an additional mounting structure is arranged on the clamping jaw, and a cleaning tool is additionally mounted on the clamping jaw when the foreign matters are difficult to clean; and the control mainboard (2) is used for controlling the mechanical arm to act and the clamping jaw to open and close. The unmanned aerial vehicle is provided with the high-definition camera and the flexible mechanical arm, the cleaning requirements of foreign matter of various shapes, sizes and positions can be met, and clamping, shearing and stripping can be flexibly dealt with by replacing and additionally installing different cleaning tools.

The utility model discloses a digital signage structure, which comprises a box body, a concave cavity arranged on the back of the box body, a hanging plate arranged on the side of the concave cavity, a wiring member arranged on the back of the box body, and a wire slot arranged on the wiring member and communicated with the concave cavity. The concave cavity arranged on the back of the box body and the hanging plate arranged on the side of the concave cavity enable the box body to be closely attached to the wall during installation, thereby improving the installation stability of the digital signage, enhancing the overall appearance of the installed digital signage, and avoiding dust accumulation and visual discord caused by gaps. In addition, the wiring member is arranged on the back of the box body, the wiring member is provided with the wire slot, the wire slot is communicated with the concave cavity, the power cord is hidden, and the problem of disordered power cord is avoided. The overall appearance of the product is improved, and the risk of electric shock or tripping caused by exposed power cord is reduced.

The invention relates to the technical field of voltage measurement, in particular to a special clamp for meter voltage measurement, and the clamp comprises an insulation assembly which comprises a first insulation handle and an insulation part which is arranged at the end part of the first insulation handle and is used for connecting an external plug, and an extension baffle plate is arranged on the side wall of the first insulation handle and is used for limiting the holding distance; and the clamping assembly comprises clamping pieces arranged at the ends of the first insulating handle and the insulating piece and used for being clamped outside the electric energy meter, and two copper spring ejector pins can be automatically adjusted according to the interval of bolt grooves of the electric energy meter so as to adapt to different sizes and keep firm contact. The heat shrink tube wrapping the insulating handle and the spring ejector pin ensures that an operator is away from the risk of direct electrical contact in the using process, and the possibility of electric shock is reduced. In addition, the lower groove effectively prevents accidental falling in the operation process, and the stability and reliability of connection are ensured.

The utility model discloses a mounting structure of a transformer. The mounting structure comprises a transformer bottom plate for mounting the transformer and a transformer plate cover fixed on the transformer bottom plate, the transformer plate cover comprises a top plate and side plates oppositely fixed to the two sides of the top plate respectively. After the transformer is installed on the transformer bottom plate and then integrated to an air conditioner in a machine room, the risk that the transformer is possibly touched by people by mistake when being externally connected is avoided, the situation that lines of the externally-connected transformer are disordered is also avoided, maintenance personnel can rapidly position faults, the maintenance efficiency is improved, and the maintenance cost is reduced. Condensate water generated by operation of an air conditioner in a machine room and water splashing possibly occurring in complex environments such as a steel mill are fully considered, the flash is arranged to provide anti-splashing protection for the transformer, the fault probability of short circuit, burning and the like caused by water inflow is reduced, and the service life of the transformer is prolonged.

The utility model relates to the technical field of transformer installation, in particular to an electronic transformer insulation installation structure and a microwave oven thereof, the electronic transformer insulation installation structure comprises an installation plate, the installation plate is used for welding an electronic transformer, and a connecting wire of the electronic transformer extends out from the bottom of the installation plate. An electromagnetic shielding cover is arranged at the position, corresponding to the electronic transformer, of the mounting plate in a covering mode, the electromagnetic shielding cover is fixedly arranged on the mounting plate through a pressing belt, and the edges of the two opposite sides of the mounting plate protrude out of the outer side of the electromagnetic shielding cover. A mounting plate is arranged on the bottom plate of the microwave oven, sliding rails matched with the edges of the two opposite sides of the mounting plate are arranged on the bottom plate of the microwave oven, corresponding fixing holes are formed in the sliding rails and the mounting plate, and screws are inserted into the fixing holes in a penetrating manner and are used for fixing the mounting plate on the bottom plate of the microwave oven. According to the utility model, the electronic transformer can be conveniently fixed in the microwave oven, and insulation and electromagnetic shielding effects are provided for the transformer.

The application discloses a power special safety isolation fence for preventing mistaken entry into a live area, relates to the technical field of power protection isolation and smart grid, and is characterized in that a plurality of middle convex counter clamping plates are equidistantly arranged between two fixed support frames, a plurality of middle convex joint plates are equidistantly arranged between the two fixed support frames, a developing torsion spring is welded at the middle of one end of the plurality of middle convex counter clamping plates and the plurality of middle convex joint plates, joint torsion springs are welded at both sides of the one end of the plurality of middle convex counter clamping plates and the plurality of middle convex joint plates, and a multi-hole middle limiting plate is clamped at one end of the developing torsion spring. The fence is adjusted by itself, and a warning linkage is cooperated with an outward expansion component, so that the distance of protection is expanded without increasing the number of fences, the actual protection cost is reduced, a person who breaks in is warned by cooperating with a contact alarm component and an environment exploration component, and a background staff member is fed back in time, so that the mistaken entry into a live environment is avoided, and the actual isolation protection effect is improved.

The application provides a liquid level circuit breaker and power distribution device, and relates to the field of power distribution protection.The liquid level circuit breaker and power distribution device comprise a circuit breaker main body, a tripping system, a liquid level control device, a liquid level detection device, and a liquid level signal processing module.The liquid level control device comprises a tripping action module and a liquid level signal processing module.The tripping action module is matched with the tripping system, and the liquid level signal processing module is connected with the tripping action module and the circuit breaker of the previous stage.The liquid level detection device is connected with the liquid level signal processing module.The liquid level circuit breaker and power distribution device can send a tripping action signal to the tripping action module and / or the circuit breaker of the previous stage according to the liquid level signal through the liquid level signal processing module to complete the tripping action, which can not only solve the problem that the circuit breaker of the electrical equipment automatically completes the tripping action after the electrical equipment is flooded, but also control the circuit breaker of the previous stage to automatically complete the tripping action, thereby reducing the risk of electric shock and the safety hazard during the maintenance of the equipment.