79results about How to "Increased sturdiness" patented technology

The invention provides an electric skateboard and belongs to the field of means of transportation. The electric skateboard comprises a remote control, a board body, a front wheel, a rear wheel and a battery built in the board body. The front wheel and the rear wheel are rotatably disposed at two ends of the board body, respectively, a hub motor for driving the rear wheel is disposed in the rear wheel, and the hub motor is connected with the battery and also wirelessly connected with the remote control. The electric skateboard provided by the invention is controlled through the wireless remote control to operate, a pressure sensor and a mounting cell are omitted, the structure is simple, production cost is low, and reliability is high; the electric skateboard is good in integrity and waterproof.

The invention provides a method for reducing the positioning torque of a magnetic-flux switching permanent magnet motor, comprising the following steps: arranging an iron core bridge between stator iron cores of the magnetic-flux switching permanent magnet motor; arranging a permanent magnet in a groove which is formed by adjacent stator iron cores and the iron core bridge, and setting the initial thickness of the iron core bridge as the length of the air gap of the magnetic-flux switching permanent magnet motor; determining the performance parameter involved in the iron core bridge thickness optimization process of the magnetic-flux switching permanent magnet motor; and optimizing and determining the thickness of the iron core bridge. The method is simple and efficient, the project is easy to implement, the thickness of the iron core bridge can be optimized by adopting the finite element method, the positioning torque of the magnetic-flux switching permanent magnet motor is reduced effectively, and the other performances of the magnetic-flux switching permanent magnet motor are hardly affected.

The invention discloses a transformer insulating cushion block processing equipment and a transformer insulating cushion block processing method. The transformer insulating cushion block processing equipment is characterized in that an insulating cushion block processing clamp is arranged on a band saw machine working platform; the clamp consists of a bottom plate, a lower frame and a power wheel; a sliding plate is arranged on the lower frame; the power wheel is parallel to the bottom plate and fixedly arranged on the bottom plate by a straight shaft; the power wheel is further connected with one end of a connecting rod eccentrically; the other end of the connecting rod is connected with one end of the sliding plate; a cutting working slot is arranged at the other end of the sliding plate; a workpiece pressing plate, a screw rod and a pinch roller are also arranged on the sliding plate; the workpiece pressing plate consists of a workpiece pressing end, a workpiece non-pressing end and a screw rod mounting hole; the workpiece pressing plate is fixedly arranged on the sliding plate by the screw rod through the screw rod mounting hole; a spring is also sheathed on the screw rod; the pinch roller is vertical to the bottom plate, arranged in parallel to the X direction, and eccentrically connected with the workpiece non-pressing end of the workpiece pressing plate; and handles are arranged on the power wheel and the pinch roller. The method can replace the existing method for manually processing a transformer insulating cushion block, and the quality of the finished transformer insulating cushion block can be obviously improved.

The invention discloses a capping and algae removal and foreign matter falling prevention device of a biological filter of a sewage treatment plant. The capping and algae removal and foreign matter falling prevention device comprises a winding roller and a limiting clamping pipe, wherein a front-end rotary shaft and a rear-end rotary shaft of the winding roller are fixedly connected with inner rings of upper-end bearings of two supporting plates respectively; end parts of two adjacent connecting rods are in sliding connection with clamping grooves formed in left and right ends of connecting parts respectively; the two adjacent connecting parts are arranged in a staggered manner; the connecting parts are used for keeping separation cloth between the two adjacent connecting rods straight andupright all the time, so that a condition that the separation cloth is bent and is in contact with water in the biological filter is prevented; a reflection layer of the separation cloth is used forreflecting sunlight and the sunlight cannot irradiate water in the biological filter; the growth of alga in the biological filter and the evaporation of water in the biological filter are avoided; a waterproof layer is used for preventing rainwater from falling into the biological filter so that the normal work of the biological filter is ensured; and a supporting layer is used for improving firmdegree of the separation cloth so that a condition that large-mass foreign matters fall into the biological filter is effectively prevented.

The invention relates to the technical field of power equipment, in particular to a telescopic fence with supporting legs capable of being folded automatically. The telescopic fence has the characteristics that the fence supporting legs can be automatically unfolded and folded, and a plurality of fences can be stably connected in complex landforms, and can be widely applied to power and building construction industries. The telescopic fence with the supporting legs capable of being folded automatically is composed of an automatic supporting leg mechanism, a connecting mechanism, a supporting frame and a telescopic fence body. Automatic unfolding and folding functions of the supporting legs can be realized by unfolding and folding the fence; and stable connection of the fence in a complex environment can be realized through the connecting mechanism. The telescopic fence is small in occupied size, convenient to carry, reliable in mechanism, firm in connection and wide in function, and is a necessary safety tool for construction in the industries such as electric power and building.

The invention discloses a dustproof baffle plate. Through arranging the dustproof baffle plate, which is matched with a ventilation opening and can adsorb the dust, at the ventilation opening of an electronic device, the dust deposition problem due to a fact that the dust enters to the inside of the electronic device from the ventilation opening is solved. The dustproof baffle plate has the technical effects of reducing the application cost of the electronic device, and improving the service life of the electronic device.

The invention discloses a degradable bag containing aluminum foil. The degradable bag containing aluminum foil is prepared from the following raw materials by weight: 10-20 parts of wheat straw pulp fiber, 30-50 parts of purple sweet potato powder, 80-100 parts of tapioca flour, 90-120 parts of shell powder, 100-130 parts of corn flour, 70-100 parts of pumpkin peel powder and 70-100 parts of coconut shell powder. A main body of the degradable bag containing aluminum foil is mainly composed of a first layer of base material, a second layer of base material and a third layer of base material from outside to inside, the first layer of base material is kraft paper or PLA, and the second layer of base material is PLA aluminum plated foil; and the third layer of base material is PLA. The preparation method of the degradable bag containing aluminum foil comprises the following steps of: bag lamination: coating the surface of kraft paper with an environment-friendly glue, carrying out extrusion compounding on the kraft paper in a wet state and the first layer of PLA base material through a compounding device, and then carrying out extrusion compounding with the second layer of PLA base material through a compounding device to prepare a compound semi-finished product; and drying and forming: removing the solvent by drying in a curing chamber, and compounding the three layers of base materials together. The degradable bag containing aluminum foil provided by the invention is environmentally friendly and beneficial to land planting.

The invention discloses a practical winding device capable of effectively saving space. The practical winding device comprises a base frame, a cooling mechanism and a winding shaft, wherein the cooling mechanism comprises two cooling cylinders which are rotatably mounted on the base frame; the cooling cylinders comprise rotating shafts, outer cylinders, connecting rods and annular protecting plates; the rotating shafts are rotatably mounted on the base frame; the connecting rods are connected with the outer cylinders and the rotating shafts; the outer cylinders and the rotating shafts are coaxially arranged; the annular protecting plates sleeve the cooling cylinders; and the winding shaft is rotatably mounted on the base frame. The practical winding device is simple in structure, small andexquisite in size, easy to operate and good in heat dissipation effect, and winding efficiency of wallpaper is effectively improved.