36results about How to "Reduce maintenance replacement time" patented technology

The invention discloses an air-conditioning capacitor discharge system which comprises a switching circuit, a rectifying circuit, a filter circuit, an inverter circuit, a motor and an operation control circuit. The switching circuit controls switching on or off of an input power supply; the rectifying circuit rectifies the input alternating current power supply; the filter circuit contains capacitance and filters the rectified power supply; the inverter circuit is driven by output of the filter circuit; the motor is driven by output of the inverter circuit; one output end of the operation control circuit is connected to the switching circuit so as to control switching on or off of the switching circuit upon the input power supply, and the other output end is connected to the inverter circuit, so that when the switching circuit is disconnected with the input power supply, the inverter circuit is controlled to output direct current to the motor. By the air-conditioning capacitor discharge system which is simple to operate and safe and reliable, electric charge stored by capacitance on the filter circuit can be rapidly released, and maintaining and replacing time is saved.

An oxygen blowing metal hose long in service life comprises a corrugated pipe, and a first joint and a second joint are arranged at the two ends of the corrugated pipe; the outer side of the corrugated pipe is wrapped with a metal net body, and the corrugated pipe is of a five-segment type structure formed by sequentially connecting a first pressure-resisting segment, a first transition segment, a high-flexibility segment, a second transition segment and a second pressure-resisting segment; the first pressure-resisting segment and the second pressure-resisting segment on the two sides of the corrugated pipe are in omega shapes; and the high-flexibility segment located in the middle portion of the corrugated pipe is in a deep-U-shaped wave shape, and the first transition segment and the second transition segment are in U-shaped wave shapes. According to the characteristics that the two sides of the corrugated pipe are bad in working condition and large in bearing pressure, the pressure-resisting segments in the omega shapes are arranged on the two sides of the corrugated pipe; according to the characteristic that due to insufficient flexibility, the dynamic bending portion of the middle segment of the corrugated pipe is prone to being damaged, the middle segment of the corrugated pipe is designed to be the high-flexibility segment in the deep-U-shaped wave shape; and through the improvement, the service life of the oxygen blowing metal hose is greatly prolonged, the maintenance and replacement time is greatly shortened, and improvement of steel smelting efficiency is facilitated.

The invention discloses a high-performance metal reflecting type heat preservation layer, and belongs to high-performance heat preservation equipment. The problems that for a non-metal heat preservation material, the degradation phenomenon exists, the pit filter screen blocking risk is prone to occurring, and dust can be generated to harm health of construction personnel are solved. The high-performance metal reflecting type heat preservation layer is formed by assembling and connecting high-performance metal reflecting type heat preservation blocks, and connectors have two modes of detachableconnection and non-detachable connection and have the better high temperature resistance, corrosion resistance and thermal insulation resistance; the containment circulation pit filter screen blocking risk is effectively reduced; the nuclear power plant maintenance and replacement time is shortened; the mechanical strength is high, and the anti-seismic property and the shock resistance are good;the service life is long, and the heat preservation performance is stable in the service life; no dust is generated, no pollutant diffusion occurs, and harm of radioactive substances to operation andmaintenance personnel can be avoided or reduced; and no corrosivity is generated to the equipment or pipelines.

The invention discloses a power high-voltage switch cabinet graded pressure relief mechanism, which comprises a cabinet top cover, a pressure relief through groove, a hinge support, a top plate, mounting buckles, a nylon bolt and a sealing ring I. The pressure relief through groove is formed in the middle of the front face of the cabinet top cover, and the hinge support is fixedly mounted at the inner bottom of one edge of the pressure relief through groove. By additionally arranging a secondary pressure relief plate on the existing top plate and mounting the secondary pressure relief plate ona pressure bearing steel plate through a pressure relief tension spring, fault gas pressures can be divided into three grades, namely the impact gas pressure which can be borne by an operator, the impact gas pressure which cannot cut off the nylon bolt, and the impact gas pressure which can cut off the nylon bolt, correspondingly, pressure relief is carried out by opening a cabinet door by the operator, pressure relief is carried out in the modes that fault gas jacks the secondary pressure relief plate and passes through a gap opening between the secondary pressure relief plate and the top plate through a vent hole, and pressure relief is carried out by shearing the nylon bolt and completely opening the top plate, so that the different fault gas pressures can be relieved in a graded modeto improve safety performance of pressure relief of the fault gas of a power distribution cabinet.

The invention belongs to the field of ceramic tiles, relates to a preparation method of a full-body granite ceramic tile and aims to solve the problems of non-uniform coloring, long production periodand high production cost of an existing full-body granite ceramic tile. The following technical schemes are adopted: the preparation method comprises the following steps that: S1, raw materials are crushed and ball-milled, the crushed and ball-milled material is sieved, and iron is removed, so that slurry A is prepared; S2, the slurry A in the S1 is subjected to powder formation, pressing and pre-drying, so that a brick blank B can be obtained; S3, the brick blank B in the S2 is sequentially subjected to ground coat spraying, protective glaze spraying, pattern spraying and dry granular glaze spraying treatment to obtain a brick blank C, the caliber of dry granular glaze spraying nozzles is 2.8-3.0 mm, each nozzle is of a spiral structure, the multiple nozzles are connected with the same glaze suction pipe, and a quarter ball valve is installed on the glaze suction pipe; and S4, the brick blank C in the S3 is subjected to material throwing and drying, the treated brick blank C is put into a firing kiln so as to be fired and molded, so that a sample D can be obtained; and S5, the sample D in the S4is processed, inspected and classified. The full-body granite ceramic tile is uniform in coloring, short in production period and low in production cost.

The invention discloses a paper winding mechanism for a label digital printing machine. The paper winding mechanism for the label digital printing machine comprises a fixed supporting bottom plate andfixed handles. Connecting supporting bottom feet are arranged at four corners of the upper end of the fixed supporting bottom plate, and a detachable protective cover device is arranged at the upperend of the fixed supporting bottom plate. The detachable protective cover device is installed, and a front semi-circular-groove protective cover and the rear semi-circular-groove protective cover of the detachable protective cover device are fixedly connected to the fixed supporting bottom plate through rotating hinges, and meanwhile, the front semi-circular-groove protective cover and the rear semi-circular-groove protective cover of the detachable protective cover device are connected with externally threaded semi-circular connecting columns through internally threaded fixing caps, so that when a rotating motor inside the detachable protective cover device rotates, the staff disassembles the detachable protective cover device, the detachable protective cover device can be unfolded in a rotating mode, the staff can conveniently replace the damaged rotating motor, and the working efficiency is improved.

The invention discloses a drive half axle structure convenient to demount and a demounting method thereof. The drive half axle structure comprises a drive half axle body. One end of the drive half axle body is connected with a hub reducer, and the other end of the drive half axle body is connected with an automobile main reducer. A boss is arranged at the end, connected with the hub reducer, of the drive half axle body and provided with an annular groove. On the basis of guaranteeing the original design mounting size of a drive half axle, an M10 threaded hole is additionally arranged in the center of the end face of the end, connected with the hub reducer, of the drive half axle; or a groove is formed in the front end of the end face. When the drive half axle is maintained or replaced, only an end cover on a hub reducer shell needs to be demounted, an M10 eyebolt is screwed to the end face of the half axle and is pulled, and the drive half axle can be pulled out easily; or, a proper steel wire which can be a rope is used for being wound in the groove, and the steel wire or rope is pulled.

The invention discloses an angling cylinder mounting seat, a body support and engineering machinery, wherein the angling cylinder mounting seat is used for mounting an angling cylinder. The angling cylinder mounting seat comprises mounting seat side plates and a mounting seat bottom plate, wherein one of the mounting seat side plates is provided with a reciprocating motion plane contacting with the angling cylinder, the mounting seat bottom plate is connected with the mounting seat side plates and detachably connected to the body support used for mounting the angling cylinder. According to the angling cylinder mounting seat, the body support and the engineering machinery, when the reciprocating motion plane, contacting with the angling cylinder, of the angling cylinder mounting seat is abraded and loses efficacy, the angling cylinder mounting seat is detached off alone to complete repair and replacement, and thus maintainability of equipment is effectively promoted.

The invention relates to the technical field of 3D printers, and discloses a fluid rapid cooling thermostat for a 3D printer. The thermostat comprises a printer head, wherein the top of the printer head is equipped with a sliding block, a horizontal slide rail is moveably connected inside the sliding block, the outer surface of the sliding block is connected with a bolt, the outer surface of one side of the sliding block close to the top of the bolt is equipped with a controller, the top of the sliding block is equipped with a feed delivery pipe, the bottom of the feed delivery pipe runs through towards the bottom of the sliding bock and is connected with the printer head, and the outer surface of the feed delivery pipe is equipped with a water storage box. The decomposition of a calcium carbonate cooling medium in a reaction chamber inside a cooling device under high temperature makes the temperature inside the feed delivery pipe drop rapidly, and a fan is used to further radiate thehot fluid material sprayed from the printer head to make the printed fluid rapidly cooled and shaped, thereby avoiding the occurrence of collapse of print products caused by overheat of the fluid, andgreatly improving molding rate and pass rate of the product.

The invention relates to a forestry reconnaissance device which comprises a rack, a reconnaissance device body and a workbin device, the rack, the reconnaissance device body and the workbin device are detachably connected, the outer wall of the reconnaissance device body is of a columnar structure, a through hole for the reconnaissance device body to penetrate through is formed in the center of the rack, and a front hanging lug is arranged at the front end of the upper surface of the workbin device; and one end of the exploration device sequentially penetrates through the front hanging lug, the through hole and the rear hanging lug to connect the rack, the exploration device and the workbin device together. Compared with the prior art, the device has the following beneficial effects that the device can be quickly disassembled and assembled and is convenient to maintain and replace, the maintenance and replacement time can be shortened when the arm of the reconnaissance unmanned aerial vehicle breaks down, and the working efficiency is improved; and the universality is high. The hollow material box device provides buoyancy for the device, and loss is reduced.

The invention relates to the technical field of compressors, and discloses a convenient-to-disassemble-and-assemble rotor seat for a refrigeration compressor, which comprises a base, a fixed disc is arranged on the outer surface of the upper end of the base, a shock pad is arranged on the outer surface of the upper end of the fixed disc, and a mounting ring is arranged on the outer surface of the upper end of the shock pad; and a connecting ring is arranged on the outer surface of the upper end of the mounting ring, an inner connecting ring is arranged on the outer surface of the inner side end of the connecting ring, a limiting ring is arranged on the outer surface of the side end of the inner connecting ring, and locking pins are arranged on the outer surface of the side end of the connecting ring. The convenient-to-disassemble-and-assemble rotor seat for the refrigeration compressor is simple in structure, high in connectivity and convenient to operate, has the advantages of being convenient to assemble and disassemble, facilitating internal maintenance, enhancing connectivity, having a limiting effect on a rotating shaft, preventing internal deviation from influencing the using effect and having a damping function, therefore, the service life of a rotor is prolonged, the using stability is improved, and the use effect is improved.

The invention relates to the technical field of controllers, and discloses a splicing controller with a 4K signal. The splicing controller comprises a machine box and a top cover, display screen bodies of LED touch display screens are clamped in inner cavities of mounting clamping grooves through mounting clamping seats, and the adjacent display screen bodies are connected through limiting columns and limiting holes on the side walls of the mounting clamping seats. A movable rod with a limiting abutting plate is movably clamped in an mounting clamping groove in one side of the machine box, the limiting abutting plate is buckled with a limiting clamping opening in the tail end of the limiting column adjacent to the limiting abutting plate, a limiting groove is formed in the outer wall of the front end plate of the machine box at the end of the movable rod and provided with an elastic bolt, and the tail end of the elastic bolt is connected with the end of the movable rod. The movable rod moves to drive the limiting abutting plate to be buckled with the limiting column to lock the display screen body, splicing and fixing of the LED touch display screen are achieved, a display control panel can be conveniently additionally installed in the later period, meanwhile, splicing and installing of the LED touch display screen are achieved, only the LED touch display screen needs to be replaced when a part of the display screen is damaged, and the maintenance and replacement time is shortened.

The invention discloses a suspension type air inlet filter cotton fixing structure and a fixing method. The fixing structure comprises an air inlet plate, a grating plate, a first overturning pressingplate assembly, a second overturning pressing plate assembly, filter cotton and two limiting pieces. The grating plate is positioned at the lower part of the air inlet plate; the filter cotton is positioned between the grating plate and the air inlet plate; the upper end of each limiting piece is fixedly connected to the air inlet plate, the lower end of each limiting piece penetrates out of thegrating plate, one end of the first overturning pressing plate assembly and one end of the second overturning pressing plate assembly are rotationally connected with the lower ends of the corresponding limiting pieces, and the other end of the first overturning pressing plate assembly and the other end of the second overturning pressing plate assembly are detachably connected to the lower surfaceof the air inlet plate. The overturning pressing plate assembly which is specially designed is adopted to be matched with the air inlet plate and the grating plate, so the filter cotton can be rapidlyfixed, disassembled, assembled and replaced by rotating the overturning pressing plate assembly, structural parts do not need to be integrally disassembled, and the maintenance and replacement time can be effectively shortened.