14results about How to "Stable life" patented technology

The invention provides a spiral fluted tap which is provided with a thick handle part, a neck part and a thick-head thread part which are coaxially arranged, the helical angle beta of the thread part is greater than 40 degrees; the groove profile of the thread part is of a three-groove structure and is in a straight-line three-arc form; the screw tap is made of a high-speed steel material subjected to vacuum heat treatment and subzero treatment and is subjected to passivation treatment. The technical problems that a spiral fluted tap is unsmooth in chip rolling and discharging, short in service life, prone to being broken, unstable in performance and low in working efficiency are solved. The cutter is beneficial to numerical control multi-line grinding machining, sharp in cutting, beneficial to tight chip rolling, long in service life, high in machining stability and high in efficiency.

The present invention provides a high-voltage direct-mounting system integrating reactive power compensation and energy storage, comprising: a module M1: calculating the amplitude and relative phase of a zero-sequence voltage based on parameter information of a cascaded H-bridge converter and a grid-side current; a module M2: calculating a given value of the output voltage of each phase of the cascaded H-bridge converter based on the given reactive power of the high-voltage direct-mounting energy storage system, and then calculating the modulation voltage of the output voltage of each phase of the cascaded H-bridge converter according to the battery charge state and capacitor voltage of each power module of each phase, and according to the modulation voltage of the output voltage of each phase of the cascaded H-bridge converter, calculating the number of sub-modules required to be put into operation under the nearest level modulation, and then sorting the battery charge state of each power module, and determining the driving signal of each power module according to the current direction of each phase and the number of power modules required to be put into operation under the nearest level modulation.

The utility model discloses a thread rolling device for bolt machining, and belongs to the technical field of bolt machining. The thread rolling device is characterized in that a feeding assembly comprises a left feeding plate and a right feeding plate which are arranged in parallel, a feeding channel is formed between the left feeding plate and the right feeding plate, and parts are arranged in the feeding channel; the thread rolling assembly comprises a thread plate fixed plate and a thread plate movable plate which are arranged in parallel, a thread rolling channel is formed between the thread plate fixed plate and the thread plate movable plate, the thread rolling channel is parallel to the feeding channel, and thread rolling is conducted on the part through the thread rolling channel; and the pushing assembly is arranged between the feeding assembly and the thread rolling assembly and can push the parts in the feeding channel into the thread rolling channel to be machined into products. The debugging method of the thread rolling device is simple and easy to operate, the service life of the debugged thread plate is stable, the quality is easy to control, the rejection rate is low, the machining efficiency is improved, and the cost is low. The utility model belongs to a thread rolling technology after heat treatment.

According to the copper and sulfur co-lattice doped nanoscale zero-valent iron and the preparation method and application thereof, based on the iron affinity and sulfur affinity of elements, the content of copper doped into nanoscale zero-valent iron lattices is successfully increased, the physicochemical property of the nanoscale zero-valent iron lattices is changed, and the stability and the trichloroethylene and florfenicol removal capacity are improved. When the material is synthesized, copper chloride is used as a copper source (thiophilic), ferric trichloride is used as an iron source, and a sulfur source (sodium dithionite) with both iron affinity and sulfur affinity is added as a'bridge '; the copper and sulfur co-lattice doped nano zero-valent iron material is synthesized by a simple and convenient one-step method through the modes of dissolving, mixing, stirring, drying and grinding. The crystal structure of the prepared copper and sulfur co-lattice doped nano zero-valent iron material is completely preserved, and copper and sulfur co-lattices are doped in nano zero-valent iron instead of covering the surface of iron to form a copper simple substance. The sulfur content and the electron transfer capability of the copper and sulfur co-lattice doped nano zero-valent iron material are improved, and the copper and sulfur co-lattice doped nano zero-valent iron material has super-hydrophobicity; the stability of the material is remarkably improved, that is, the service life of the material in water can reach more than 2 years, and 80% of zero-valent iron content and hydrophobicity can be maintained after the material is exposed in air for 30 days; and the capability of removing organic pollutants such as trichloroethylene and florfenicol in underground water can be enhanced. The synthesis method provided by the invention is simple and easy to operate, the performance of the material is remarkably improved, a new design idea can be provided for the co-lattice doped iron-based nano material, and the material is applied to remediation of polluted underground water.

The utility model is suitable for the field of bridge jig frame devices, and provides a novel bridge field installation positioning support which comprises a support, an installation height adjusting positioning device, a height adjusting device and a supporting rib. The height adjusting device is arranged at the bottom of a vertical rod of the support, and the supporting rib is connected to the support. The installation height adjusting and positioning device comprises a lead screw sleeve, a fixing clamp, a motor and a lead screw, the lead screw sleeve is fixedly connected to the permanent magnet chuck, the lead screw is arranged in the lead screw sleeve, the motor is arranged in the lead screw sleeve, the output end of the motor is connected with the lead screw, the permanent magnet chuck is detachably installed on a cross beam of the support, and the fixing clamp is fixedly connected to the lead screw sleeve. The fixing clamp is installed on the permanent magnetic chuck, a universal adjusting disc is installed on the top of the lead screw, and the upper surface of the universal adjusting disc is connected with a lower surface plate of the bridge bottom plate. A manual adjusting sleeve is connected between the top end of the lead screw and the universal adjusting disc. According to the utility model, the problems of low positioning precision and low installation efficiency during bridge installation are solved.

The application belongs to the technical field of mobile charging equipment and relates to a compact charging vehicle body. The vehicle body comprises a frame body integrally welded and formed, which is internally provided with first-layer, second-layer and third-layer battery placing frame structures stacked in sequence from top to bottom. The bottom center of the third-layer battery placing frame structure is provided with a water-cooled cabinet storage frame structure for installing a water-cooling module to realize efficient heat dissipation. The frame body is provided on one side with an integrated energy conversion module placing frame structure for installing functional units. The bottom of the frame body is provided on both sides with fixing frames, and the frame body is connected with a foot pedal structure through a Z-shaped foot pedal connecting frame. The application solves the problems of large size and inconvenient movement of the existing mobile charging vehicle through a multi-layer stacking layout, modular integration and integrated welding structure, has the advantages of compact structure, light self-weight, good heat dissipation performance, convenient operation and maintenance and the like, and significantly improves the space utilization and environmental adaptability.

The utility model discloses a cross axle frame preforming die, including corresponding preforming upper die and preforming lower die, and is equipped with preforming cavity between preforming upper die bottom surface and preforming lower die top surface, and is equipped with preforming convex column in preforming cavity in preforming lower die, and preforming convex column upper end surface is higher than preforming parting surface, and preforming convex column upper end surface is equipped with a preforming positioning groove, preforming cavity front side middle part and rear side middle part all are equipped with a preforming cylindrical groove. The utility model discloses an arc -shaped groove structure of positioning upsetting blank is designed, and special tongs are used to hold upsetting blank and place to preforming convex column simultaneously, make upsetting blank be positioned in front and back, left and right direction all and be positioned well, ensure that metal material can fill preforming cavity in preforming process, and preforming upper die and preforming lower die stress balance also, alleviate the forging amount of final forging process, and forging quality improves, and preforming die and final forging die are all life stable.

The utility model relates to the technical field of STN products, in particular to a high-gradient STN display screen driving structure which comprises an upper polaroid, an upper glass substrate, a first P I orientation layer, a second P I orientation layer, a lower glass substrate and a lower polaroid which are arranged from top to bottom. The compensation value of the upper polaroid ranges from 500 nm to 700 nm, the slicing angle of the upper polaroid ranges from 15 degrees to 20 degrees, the pretilt angle of the first P I orientation layer and the pretilt angle of the second P I orientation layer range from 7 degrees to 8 degrees, the thickness of the first P I orientation layer and the thickness of the second P I orientation layer range from 500 A to 700 A, the thickness of a gap between the upper glass substrate and the lower glass substrate ranges from 5 micrometers to 7 micrometers, and the thickness of a gap between the upper glass substrate and the lower glass substrate ranges from 5 micrometers to 7 micrometers. According to the utility model, the problems of blurring or distortion of a displayed image, low contrast and poor display effect caused by non-uniform transition between pixel points due to voltage fluctuation and influence on gradient performance can be solved.

The utility model belongs to the technical field of cables, and particularly relates to a high-temperature-resistant special power cable, which comprises a lead, a coating layer is arranged on the outer side of the lead, a protective layer used for protecting the interior of the cable is arranged on the outer side of the coating layer, buffer strips used for buffering external force are arranged in the protective layer at equal intervals, and the buffer strips are arranged on the outer side of the lead. The outer side of the protective layer is provided with an outer sheath used for replacing the coating layer to bear external negative effects, the assembly structure of the outer sheath is used for being disassembled and replaced when being damaged, the interiors of the upper end and the lower end of the coating layer are both provided with positioning strips used for installing the outer sheath, and the outer sides of the positioning strips are provided with protruding plates. According to the utility model, a traditional cable maintenance mode can be changed, negative effects can be prevented from being transmitted inwards when external aging, tearing and other damages are caused through an internal and external division mode, and the normal use performance of an internal structure is ensured, so that the service life and the practicability of the cable are improved.

This invention discloses a cutting insert and a drilling tool for detachable mounting on a tool holder. The insert includes a first mounting plane and a second mounting plane, which form the seat surface of the insert; two V-shaped mating surfaces that fit and conform to the V-shaped positioning surface on the tool holder; at least one screw hole; four main cutting edges forming a polygonal outline on the V-shaped mating surfaces; a chip groove adjacent to the main cutting edges; a chisel edge connecting the main cutting edges; and a drill tip formed by the intersection of the theoretical extensions of the cutting edges of the main cutting edges. The insert as a whole has a symmetrical structure relative to the center line connecting the screw holes. The cutting insert can be mounted with either the first or second mounting plane facing the tool holder, allowing for drill tip interchangeability. This invention adopts a double-sided symmetrical design, overturning the traditional drill bit model that can only use one cutting tip, significantly improving the utilization rate of the insert material.

The present invention relates to the field of robot patrol technology, and in particular to an automatic patrol system based on a storage-type household robot, comprising: a storage module, used to store household items in a space to be sorted into the interior of the household robot by patrolling; a detection module, which is connected to the storage module, including an infrared sensor connected to the household robot for detecting obstacles, a vibration sensor connected to the household robot for detecting the vibration intensity when the household robot is running, and a collision sensor connected to the household robot for detecting the number of collisions of the household robot; a control module, which is respectively connected to the storage module and the detection module, and is used to determine the smoothness of the motion trajectory of the household robot according to the error rate of the household robot's obstacle detection or determine the damping strength of the household robot according to the vibration intensity when the household robot is running. The present invention improves the patrol stability of the household robot.

The invention relates to the technical field of food drying processors, and discloses a food drying processor convenient to disassemble and store. The food drying processor convenient to disassemble and store comprises a box body, embedded pieces, a side plate, a fixing screw rod and a placing frame, the embedded pieces are fixedly connected to the left side and the right side of the box body, the side plate is arranged on the left side of the box body in a sliding mode, and an air outlet net is arranged on the right side of the box body in a sliding mode; the side plate and the air outlet net are each provided with two clamping grooves matched with the embedded pieces, through holes are formed in the upper side and the lower side of the box body, a plurality of fixing screws are inserted into the side plate, the fixing screws penetrate through the through holes and are in threaded connection with the air outlet net, and the side plate and the air outlet net are each fixedly connected with a containing frame. By designing a special structure, the food drying processor is easy to disassemble, small in size and convenient to store and carry, quick-wear parts can be effectively protected and prevented from being damaged in the transportation process, and long service life and stable performance of equipment are ensured.

The utility model provides a kind of water-saving garden fountain, belong to fountain equipment technical field, including the circulating water tank that raw water tank outlet end is connected, the backwater cavity bottom of circulating water tank is connected with circulating pipeline, the water outlet end of circulating pipeline is provided with filter box, the side in filter box close to circulating pipeline is provided with hair collection subassembly, multiple filter plates are provided in filter box inner middle part, one filter assembly is provided between two filter plates, the utility model is isolated to the hair in the recycled water by hair collection subassembly and is collected, recycled water is filtered secondly by filter plate, recycled water is filtered thirdly by filter assembly between two filter plates, recycled water is pumped into raw water tank by backwater pump again, recycled water is supplied into water supply cavity by booster pump, recycled water is supplied into fountain again, to improve the filtering effect of recycled water, and then the life of pump group on backwater pipeline is stabilized, and the quality of recycled water outlet is improved, so that the overall life of equipment is improved.

The utility model provides a long -life high -performance screw tip tap has the coarse handle handle, thin neck and screw tip of coaxial connection as an organic whole, the chip flute made of screw tip is three groove structure, and the chip flute of three groove structure is three equal parts distribution relative to tap center axis, and the chip flute groove shape is two straight lines two circular arc form, and the smooth transition between circular arc, the screw tip still is made with straight flute, and the screw tip tap adopts the high -speed steel material of vacuum heat treatment, cryogenic treatment and passivation treatment to make. The utility model solves how to reach the technical problem of high -efficient tapping processing of high -performance screw tip tap product on numerical control equipment, improves tap life, processing high -efficient, quality is stable, long -lived, is fit for promotion.