73results about How to "Reduce repair and maintenance costs" patented technology

The invention relates to a clamping and conveying device for conveying steel bars. The device comprises a main box, a secondary box, an upper roller, a lower roller and a cylinder, wherein the secondary box is glidingly arranged in the main box at the upper part of the lower roller; the secondary box is driven by the cylinder fixedly arranged at the top of the main box; the main box at two ends of the upper roller is provided with symmetrical end covers respectively; each end cover is provided with an upper roller sliding hole and an oil return baffle plate; the lower part of the oil return baffle plate is provided with an oil return oil; an oil baffle cover plate is fixedly arranged at the outer side of the end cover; the oil baffle cover plate is provided with a cover plate through holecorresponding to the upper roller sliding hole; and a dustproof oil baffle cover is fixedly arranged on the upper roller bearing end cover between the oil baffle cover plate and the oil return baffleplate. The device has compact structure, scientific and reasonable design, low manufacturing cost, small volume and high clamping accuracy, and can adapt to the steel bars of different specifications; the lubricating mode is circulating oil reinforced lubrication; and the device is reliable in sealing and high in transport velocity, improves the production efficiency of the steel bars, prolongs the service life of the steel bars, and is safe and reliable.

The invention discloses an adjustable automobile shock absorber, which comprises a base, a groove is arranged on the upper side of the base, a plurality of first shock absorbing springs are arranged inside the groove, and a support plate is arranged on the upper end of the first shock absorbing spring. The four sides of the support plate are slidingly connected with the groove, and the bottom of the groove is symmetrically arranged with a rotating seat, and a threaded rod is arranged on the rotating seat, the upper end of the threaded rod passes through the supporting plate, and the upper end of the threaded rod is located on the upper side of the supporting plate Adjusting nuts are provided, a lower housing is provided on the upper side of the support plate, a piston cylinder installed in the middle of the upper side of the support plate is provided inside the lower housing, a piston rod is provided at the upper end of the piston cylinder, and an upper housing is provided at the upper end of the piston rod. body, the outside of the piston barrel and the piston rod is provided with a second damping spring, and the inside of the base, the support plate, the lower casing and the upper casing are all provided with a sound insulation layer. The invention has the advantages of simple structure, convenient use, adjustable elastic force, good damping effect and long service life.

The invention discloses a method for starting the technological process of a slurry bed reactor. The method comprises the following steps of: (1) preparing; (2) detecting the air tightness of a starting operation system of the slurry bed reactor; (3) starting a main circulation compressor, and establishing air circulation of the starting operation system of the slurry bed reactor; (4) testing the blowing and differential pressure of a distributor; (5) exchanging the nitrogen of the starting operation system of the slurry bed reactor; (6) establishing water circulation of the starting operation system of the slurry bed reactor; (7) releasing the pressure and introducing heavy diesel and residue wax; and (8) boosting the pressure of the starting operation system of the slurry bed reactor; and the like. The method has the advantages that the benefit of the slurry bed reactor is maximized; carbon deposition of the surface of a filtering tube caused by burned catalyst can be avoided, so that the service life of the filtering tube is greatly prolonged, and the repairing and maintenance cost of the equipment is reduced; the problem that the distributor is blocked due to the fact that the hydrogen circulation time is not sufficient or the circulation quantity is low is avoided; the long-term stable operation is ensured; and the production efficiency is greatly improved.

The invention discloses a marine detachable electric heater device. The device comprises a casing 1, detachable heating pipes 2 and a control part 3, wherein the detachable heating pipes 2 are arranged inside the casing 1; a thermal resistance temperature sensor 4 for temperature control and a temperature controller 5 for high-temperature protection are arranged in the control part 3; and detachable electric heating elements are mounted in the detachable heating pipes 2 and are electrically connected with the control part 3. In design of the heating elements, the electric heating elements are used as straight-through pipe type heating pipes and are different from conventional U-shaped heating pipes. In the design of the heating elements, each heating element can be separately detached and is convenient to use and maintain, and maintenance and change costs are reduced. On occasions where heating is required and maintenance is difficult, the relatively good, stable and safe working state can be obtained, and the device is convenient to maintain.

The invention discloses a spray nozzle for an injection molding machine. The spray nozzle comprises a spray nozzle body, wherein the spray nozzle body comprises a front spray nozzle body and a rear connector; a screw joint hole is formed in the middle of the front end surface of the rear connector; the rear end of the front spray nozzle body is in screw joint in the screw joint hole; the rear end of the rear connector is provided with a central through hole; the central through hole is communicated with the screw joint hole; the middle part of the front end surface of the front spray nozzle body is provided with a connecting column extending forwards; the connecting column is in screw joint on a spray nozzle head; the middle part of the spray nozzle head is provided with a spray nozzle hole; the middle part of the front spray nozzle body is provided with a flow cavity; the flow cavity comprises a front small-diameter section, a middle arc-shaped transition section and a rear large-diameter section; the rear end of the rear large-diameter section is provided with inner threads; the rear large-diameter section is communicated with the central through hole; and a middle valve body is in screw joint in the inner threads. According to the spray nozzle, the middle valve body is arranged in the flow cavity, so that a buffer spring is arranged inside, and therefore, material spraying effect is improved by arranging an electric heating sleeve on the outer part of the front spray nozzle body, and cold materials are prevented from being jammed.

The invention discloses a full-automatic chilli stem cutting machine with an automatic basket sieve device. The full-automatic chilli stem cutting machine with the automatic basket sieve device comprises a machine frame and a roller transversely arranged in the machine frame; a feeding port is formed in one end of the roller and a discharge port is formed in the other end of the roller; the automatic basket sieve device is arranged at the front section of the roller and at the feeding port end; a drive mechanism is arranged at one end of the roller. Crops, such as chilli and the like, enter the roller after being loaded and can be subjected to automatic basket sieving, so the existing step of performing basket sieving on impurities in advance can be eliminated and the production efficiency is improved. A PLC (programmable logic controller) control system is used for controlling the rotating speed of a motor, so that the roller slowly operates when initially rotating and then gradually increases the rotating speed; the drive mechanism and the roller are connected through a shaft coupler, so that the phenomena of large noise and damage to equipment caused by decentraction of the roller and a rotating shaft even if the roller is slightly worn during long-term operation are avoided, the equipment is protected effectively, and the maintenance cost is reduced.

The invention discloses an LED environmental protection energy-saving wall lamp with automatic and adjustable irradiation directions. The LED environmental protection energy-saving wall lamp comprises a lampshade, a main shell and an LED lamp main board, wherein the top of the main shell is in screw connection with a back shell; a middle support plate is formed on the inner side wall at the lower part of the back shell; the middle support plate has a central threading hole; the bottom end surface of the main shell has a step-shaped through hole; the LED lamp main board is fixed in the step-shaped through hole; a lamp body of the LED lamp main board stretches out of the step-shaped through hole; a screw connection base of the back shell is connected on a screw connector fixed to the inner top surface of the lampshade through screws; a rotating arm is fixed to the side wall of the lampshade, and is hinged to a connecting block through an articulated shaft; an angle adjusting motor is fixed to a lamp holder; a drive gear is fixed to the output shaft of the angle adjusting motor; and a transmission gear is fixed to one end of the articulated shaft. According to the LED environmental protection energy-saving wall lamp, the irradiation angles and directions can be automatically adjusted; and besides, the main shell, the back shell and a lens are convenient to disassemble and mount, so that the changing of inner parts is convenient.

The invention discloses a bridge provided with rigid hinges, belonging to the field of bridges. The bridge provided with the rigid hinges disclosed by the invention is characterized in that an amplitude-separation six-tower cable-stayed structure is adopted, the bridge mainly comprises two girders, the two girders are broken at the midspan of the full bridge to form expansion joints, the girders are divided into two parts, each part is a three-tower cable-stayed bridge, the rigid hinges are arranged in the expansion joints so as to connect the two parts of the girders. The bridge disclosed by the invention is provided with the rigid hinges, the structure is simple, the construction difficulty is small, the influence on the water environment is small, and the cost is low; the technical problem of small whole height of a multi-tower cable-stayed bridge is solved, and the problem of deformation of the girders of the bridge along with temperature is scientifically and reasonably solved; longitudinal relative linear displacement of two ends of the girders is released, the corners and the shear displacement of the girders are restrained, the comfort of driving a car is ensured while the stress requirements are met, the service life is long, and the safety and reliability during use is ensured. The construction is simple, the maintenance cost is less and the popularization is easy.

The invention discloses a structure capable of preventing a transmission line concrete pole from uplifting and a construction method thereof. The structure capable of preventing the transmission line concrete pole from uplifting comprises a concrete pole, a fixed ring, a fixed stay wire, tires and hubs. The construction method of the structure capable of preventing the transmission line concrete pole from uplifting comprises steps: 1 a concrete pole pit is excavated on a position which embeds a concrete pole; 2 the tires which are not full of gas are matched with the hubs to mount, and are horizontally arranged on the bottom portion of the concrete pole pit; 3 the fixed ring is sleeved on the concrete pole; 4 the concrete pole is vertically arranged in the concrete pole pit; 5 the fixed stay wire is arranged; and 6 the tires are inflated, and then the concrete pole pit is filled with ackfill and is compressed to enable the tires to be a compressed state, thereby completing construction. The structure capable of preventing the transmission line concrete pole from uplifting and the construction method thereof fundamentally solve the problem that concrete poles are uplifted because soils are frozen in winter and molten in summer in northern area of China, are simple in structure and convenient to construct, low in material cost and short in construction period, and greatly reduce maintenance cost which are required for solving the uplifting problem of concrete poles.

The invention discloses a bullet train operation depot. The bullet train operation depot comprises a storage park, a wheel tread diagnostic device and an examination library. The bullet train operation depot is characterized in that one end of the storage park is provided with an entrance and exit port of the bullet train operation depot, the entrance and exit port of the bullet train operation depot is connected with a passenger station through a rail, and the other end of the storage park is connected to the examination library through the rail, and the rail between the storage park and theexamination library is provided with the wheel tread diagnostic device and a housing cleaning machine. The bullet train operation depot is capable of effectively improving the pickup speed, wherein amotor train unit can directly enter the storage park in 40 km/n of the speed, and the pickup time is shortened by 75%, effectively improving the pickup density, improving the efficiency of the maintaining operation, and improving the operation economic benefit of the bullet train.

The invention discloses a drilling machine for hardware machining punching. The drilling machine comprises a working table and a base, wherein a rack is arranged on the upper side of the working table; first electric telescopic rods are arranged at the upper end of the interior of the rack in bilateral symmetry; a compressing block is arranged at the lower end of each of the first electric telescopic rods; a mounting plate is arranged between the two first electric telescopic rods; a perforating device is arranged in the middle of the lower side of the mounting plate; an objective table is arranged in the middle of the upper side of the working table; pillars are symmetrically arranged on the left and right sides of the objective table; a clamping block is arranged at the upper end of eachof the pillars; threaded rods are mounted at the left and right ends of the upper side of the base through connecting seats; adjusting plates are in threaded connection with the threaded rods; a support rod is arranged at the lower end of each of the adjusting plates; two connecting plates are symmetrically arranged on the left and right sides of the working table; the connecting plates are in sliding fit with the support rods; and an upper damping spring and a lower damping spring are arranged on the upper and lower sides of each of the connecting plates. The drilling machine is simple in structure, convenient to use, high in machining precision, convenient to move and high in damping effect.

The invention discloses a portable intelligent bracelet with replaceable bands. The portable intelligent bracelet comprises a bracelet main body, a left band and a right band, wherein a touch display screen and a circuit board are arranged in the bracelet main body; the touch display screen is connected onto the circuit board; a three-axis acceleration sensor is arranged on the circuit board; connecting parts are arranged on the left and right sides of an outer shell of the bracelet main body; central insertion holes are formed in end faces of the connecting parts; upper screwed through holes are formed in top surfaces of the central insertion holes; connecting posts are arranged at the end parts of the band bodies of the left band and the right band; the connecting posts are inserted into the corresponding central insertion holes in a sleeving manner; vertical through holes are formed in the middles of the connecting posts; positioning screwing posts are screwed into the upper screwed through holes; and insertion rods are arranged at bottom ends of the positioning screwing posts and inserted into the vertical through holes in a sleeving manner. The portable intelligent bracelet disclosed by the invention is convenient to wear, the left band and the right band can be replaced according to needs, the replacement is convenient, and the maintenance cost is greatly reduced. Moreover, the shape of the bracelet is novel and attractive, and the requirements of different users on fashion are met.

The invention relates to a vehicle-mounted lamp which comprises a body of a vehicle body, a control circuit, a motor, a winch, a steel wire rope, a lamp pole, a lamp cap device, a switch pressure sheet, a first travel switch, a plate spring and a second travel switch. The control circuit is used for driving the motor to drive the winch to rotate forward to erect the lamp pole in the positive rotating process and driving the motor to drive the winch to rotate reversely to put down the lamp pole in the reverse rotating process; the switch pressure sheet is arranged at the near end of the lamp pole and when the lamp pole is vertical to the body, the first travel switch is pressed down and the motor is shut down; and the second travel switch is fixedly arranged on the body and when the lamp pole is parallel to the body, the second travel switch is pressed down and the motor is shut down. According to the scheme, in the field emergency operation, the operation time is short, the effective illuminating environment is provided, the manpower resources are also saved, the rescue mission can be efficiently and safely completed, the repair and maintenance cost is reduced and the economic benefit is high.

The invention discloses a novel warp knitting machine guide bar device. The novel warp knitting machine guide bar device comprises a guide bar plate and a plurality of guide bar strips, wherein a bracket is fixed to the top of the guide bar plate; a plurality of transverse inserting grooves are formed in the side wall of the guide bar plate; a plurality of guide bar strip supporting blocks are inserted into the inserting grooves; a plurality of screw holes are formed in the back surface of the guide bar plate and are communicated with the inserting grooves; ball plungers are connected to the screw holes in a screwing way; steel balls of the ball plungers extend into the inserting grooves and are inserted into concave holes in the back wall surfaces of the guide bar strip supporting blocks positioned in the inserting grooves; slide grooves are formed in the front wall surfaces of the guide bar strip supporting blocks; vertical screw holes are formed in the top surfaces of the slide grooves; adjusting bolts are screwed into the vertical screw holes; the top ends of the adjusting bolts press and push against the top surfaces of the guide bar strip supporting blocks; the bottom ends of the adjusting bolts extend into the slide grooves and are hinged to rolling balls; gliding grooves are formed in the bottom surfaces of the slide grooves. Each part of the novel warp knitting machine guide bar device can be detached, replaced and maintained, and meanwhile, during sliding of the device, the contact area is small and the friction force is low, so that the moving speed is increased, and the service life is prolonged.

The invention discloses a clamping jaw mechanism. The clamping jaw mechanism comprises a fixing frame, a floating adjusting assembly and an electric permanent magnetic chuck, wherein one end of the floating adjusting assembly is movably connected with the other end wall of the fixing frame in a telescopic mode; and one outer wall of the electric permanent magnetic chuck is fixedly connected with the other end of the floating adjusting assembly, and the other side wall of the electric permanent magnetic chuck can magnetically attract to-be-grabbed materials. According to the clamping jaw mechanism, the production energy consumption can be lower; and compared with a gripper structure adopting an air cylinder or a vacuum chuck, the clamping jaw mechanism of the electric permanent magnetic chuck is simpler, the failure rate is reduced, halt of a production line is not prone to occurring, and therefore the maintenance cost is greatly saved.

The invention discloses a mortar box stirring-shaft sealing device for shield equipment.The mortar box stirring-shaft sealing device comprises a support, a compaction mechanism, a support mechanism and a seal assembly and is characterized in that an end plate of the mortar box body is fixed with the support sheathed on the outside of the stirring shaft; a corner seal is fixed at a support end portion close to a mortar box body side through a corner seal gland; compaction equipment II is arranged at an inner side of the support, and is sleeved and fixed on a stirring shaft; compaction equipment I is further sleeved and fixed on the stirring shaft; a support mechanism is fixed between the compaction equipment II and the compaction equipment I; two floating seals are arranged at both bearing pedestal ends in the support mechanism and compacted tight through the compaction equipment II and the compaction equipment I; the stirring shaft is sleeved and fixed with a circular nut, and the circular nut is fixed at a lateral side of the compaction equipment I. The mortar-box agitating-shaft sealing device for shield equipment provided in the invention can effectively prevent slurry leakage from end portions of the stirring shaft to the outside of the mortar box. Service life of the device is lengthened, and the device is easy to be replaced and can greatly reduce manufacture cost.

The invention discloses a transport vehicle with a wide application range and for pipeline machining. The transport vehicle comprises a base and a support. Firs threaded rods are installed at the leftend and the right end of the upper side of the base through connecting seats and connected with adjusting boards in a threaded mode. Supporting rods are arranged at the lower ends of the adjusting boards. Connecting boards are symmetrically arranged on the left side and the right side of the support and connected with the supporting rods in a sliding mode. The upper side and the lower side of each connecting board are provided with an upper damping spring and a lower damping spring. Sliding grooves corresponding to the supporting rods are bilaterally symmetrically formed in the upper side ofthe base. The lower ends of the supporting rods are arranged in the sliding grooves. A containing box is arranged in the support. The left side and the right side of the containing box are connected with the support through rotary shafts. A motor used for driving the rotary shafts is arranged on the right side of the support. A locating board is arranged at the lower end in the containing box. A limiting board is arranged at the upper end of the containing box. The transport vehicle is simple in structure, convenient to use, wide in application range, good in shock absorption performance and long in service life.

A method for killing fly type pests in a trapping device through diatomaceous earth in a non-toxic mode includes the steps of firstly, forming the waterproof fly trapping device through waterproof materials; secondly, throwing the diatomaceous earth in a pest collection device or a collection area of the trapping device or spraying the diatomaceous earth to the outer surface of the fly trapping device. Once flies enter and set foot on the pest collection device or the collection area in the trapping device, fine particles of the diatomaceous earth can be instantly attached to body surfaces of the flies, the flies can instantly feel uncomfortable and can not struggle at the moment, and therefore the flies can not escape and can die from body dehydration within a short period of time, an extremely small number of flies can escape but can automatically die within a short period of time as well after escaping, and death of the escaped flies can not be influenced by any external environment. The method has the advantages of being advanced in science and technology, environmentally friendly, free of toxin, capable of saving energy, reducing cost and reducing pollution, high in killing rate, beneficial to scientific research, remarkable in effect, capable of purifying the environment, and the like, and the method has extra economic and social benefits.

The invention provides a rubber jacket hydraulic automatic combining device and method of a butterfly valve assembly machine. The rubber jacket hydraulic automatic combining device is convenient and safe to use, and pressure of a main unit can be adjusted in time according to butterfly valve rubber jackets of different types and specifications; working efficiency and quality are greatly improved, the rate of finished products reaches above 99%, and good economic benefits are achieved; due to the fact that automatic control is adopted for the rubber jacket hydraulic automatic combining device and method, a man-machine security coefficient is high, a great amount of time and a great deal of energy resources are saved, maintenance cost caused by abrasion is reduced, the performance of the entire machine is improved, the service life of the entire machine is prolonged, and production cost is lowered. The rubber jacket hydraulic automatic combining device of the butterfly valve assembly machine comprises a butterfly valve assembly worktable, an infrared ray induction safety device, a tool base, an assembly machine stand column, a pressure head tool, a pressure regulating valve device, an upper hydraulic oil cylinder supporting frame, a pressure gauge, an upper hydraulic cylinder device, an PLC control box device, control buttons, an electrical cabinet device, a butterfly valve tool, a locking nut mechanism, a downward pressing lead screw assembly, a motor device, a piston rod device and the like.

The invention discloses an off-road vehicle and a lateral pedal plate assembly thereof. The lateral pedal plate assembly comprises a main body portion and a panel portion which is arranged on the upper surface of the main body portion; the upper surface of the main body portion, which faces the panel portion, is provided with a plurality of clamping grooves; the surface of the panel portion, which faces the main body portion, is provided with a plurality of clamping blocks; the clamping blocks and the clamping grooves are arranged in a one-to-one correspondence mode; every clamping block is connected into the corresponding clamping groove in a clamped mode. Accordingly, the main body portion is connected with the panel portion in a clamped mode and accordingly the installation reliability of the clamping structure is high in comparison with the adhesive connection, the aging failure of the clamping structure after long time use cannot be produced, and the service life of a lateral pedal plate is long and meanwhile the detachable connection of the main body portion and the panel portion can be implemented through the clamping structure, the main body portion and the panel portion can be detached and replaced when abrasion of one of the main body portion and the panel portion is produced, and accordingly the separate replacement of assemblies is implemented and the maintenance cost is reduced.

The invention relates to a tool for hoisting a single segment of cylinder body and belongs to the technical field of shipbuilding and ship repairing. The tool comprises an upper hoisting pipe (1) and a lower hoisting pipe (2); the rear end of the upper hoisting pipe (1) is connected with the rear end of a lower hoisting pipe (2) through a connecting part (3); a front reinforcing plate (5) and a rear reinforcing plate (4) are respectively arranged at the front and rear sides of the connecting part (3); an upper telescopic rod (6) penetrates into the front end of the upper hoisting pipe (1); an upper nylon sleeve (7) sleeves the front end of the upper telescopic rod (6); a lower telescopic rod (8) penetrates into the front end of the lower hoisting pipe (2); a lower nylon sleeve (9) sleeves the front end of the lower telescopic rod (8); the upper surface of the lower hoisting pipe (2) is covered by a plurality of arc-shaped nylon cover plates (10). The tool for hoisting the single segment of cylinder body, disclosed by the invention, has the advantages of effectively preventing the phenomenon of scratching and contusion of the surface of a tower cylinder and greatly reducing the workload of subsequent repairing and grinding.

The invention relates to a coating and an application, and provides a reflection type coating capable of increasing photoelectric conversion efficiency of a roof distribution type photovoltaic power generation system and an application. The problems that photoelectric conversion efficiency of existing photovoltaic power generation is low, the service life of a photovoltaic inverter is short and generating capacity is affected are solved. The reflection type coating is prepared from emulsion, a solvent, reflection type pigment and filler, a dispersing agent, a defoaming agent and a coalescing agent. The invention provides the application of the reflection type coating to increase of the photoelectric conversion efficiency of the roof distribution type photovoltaic power generation system. The reflection type coating is used for increasing the photoelectric conversion efficiency of the roof distribution type photovoltaic power generation system.

The invention discloses a shale oil gas hydraulic fracturing Y-shaped fluid end and belongs to the technical field of oil filed hydraulic fracturing equipment. The shale oil gas hydraulic fracturing Y-shaped fluid end comprises a Y-shaped fluid end valve box, a suction mechanism, a discharging mechanism and a plunger mechanism, wherein the suction mechanism, the discharging mechanism and the plunger mechanism are mounted in the fluid end valve box. The center line of the suction mechanism is a first center line. The center line of the discharging mechanism is a second center line. The center line of the plunger mechanism is a third center line. The first center line, the second center line and the third center line are distributed in a Y shape. A discharging valve hole in the discharging mechanism, a suction valve hole in the suction mechanism and a plunger hole form a Y-shaped inner cavity. A fluid end plunger reciprocates in the plunger hole. When the fluid end plunger is far from the intersection of the three center lines, the pressure of the Y-shaped inner cavity is decreased, and fracturing liquid enters the Y-shaped inner cavity from a low-pressure liquid inlet through the suction valve hole; and when the fluid end plunger is close to the intersection of the three center lines, the plunger pressurizes the fracturing liquid in the Y-shaped inner cavity to be discharged through the discharging valve hole.

The invention relates to a low-position illumination lamp for a tunnel. The low-position illumination lamp is installed at the position, which is 1.0 mm to 1.5 mm away from the ground, of a wall of the tunnel; a reflection cup comprises two parabola arc faces and one free arc face, the free arc face is connected between the two parabola arc faces, the two parabola arc faces are different in shape, and the lengths of the two parabola arc faces are both larger than the length of the free arc face; the length of the parabola arc face close to the lower portion of a lamp body is larger than the length of the parabola arc face close to the upper portion of the lamp body; and an included angle between a lamp source and a flat plate on the back of the reflection cup ranges from 64 degrees to 66 degrees. After light is emitted by the lamp source is reflected by the reflection cup, a lighter light band and darker light bands are formed, the darker light bands generated by illumination lamps on the walls on the two sides of the tunnel are overlapped together, the luminance of the overlapped darker light bands is basically the same as the luminance of the lighter light band, low-position even illumination on the road surface of the tunnel is achieved, and the national standard requirement is met. Meanwhile, the illumination energy consumption is obviously reduced, and the problem of glaring is solved.

The invention relates to a prefabricated reaction tank for the biological contact oxidation for the sewage pretreatment. The prefabricated reaction tank comprises a cylindrical tank body, a tank body top plate and a reversed cone-shaped sludge hopper, a partition plate is fixed in the cylindrical tank body to isolate the water inlet and the water outlet, a communication hole is formed on the partition plate, an aerator and a biological filler bracket are arranged at the bottom of the water outlet cavity side, biological filler is arranged on the biological filler bracket, a filler inlet is formed on the tank body top plate at the outer outlet cavity side, a manhole is formed on the tank body top plate at the water inlet cavity, the cylindrical tank body comprises a concrete core body with a steel cylinder, prestressed steel wires and a tank body protection layer, the outer wall of the concrete core body with the steel cylinder is wound with the prestressed steel wires to form a prestressed core body, and the tank body protection layer is fixed at the outer wall of the prestressed core body. The invention has scientific and reasonable structure design, short production period, low fabrication cost and high safety and reliability, can effectively shorten the construction cycle and reduce the construction cost, and has good corrosion resistance and long service life.

The invention relates to a bridge sling anchorage device pin shaft oiling device and an oiling method thereof. The device comprises a sealing tank (1), the interior of the sealing tank (1) is hollowedout to form a circular oil storage cavity (2), and a fastening bolt (3) is arranged in the center of the closed end of the sealing tank (1) in a penetrating manner; a magnetic mechanism (4) is arranged at the outer end of the fastening bolt and comprises a permanent magnet (4.1), a built-in nut is arranged on the inner end face of the permanent magnet (4.1), and the fastening bolt (3) is connected with the built-in nut; a plastic oil filling pipe (7) and an oil drain valve (8) are arranged on the outer wall of the sealing tank (1), and an annular sealing strip (9) is arranged on the end faceof the opening end of the sealing tank (1). According to the invention, the oil inlet amount of an anchorage device pin shaft can be effectively ensured, and the lubricating oil can reach the middle of a shaft hole, so that the lubricating state of the pin shaft is improved, the service life of the pin shaft is effectively prolonged, and the maintenance and replacement cost of the bridge sling anchorage device pin shaft is reduced.

The invention discloses a permanent magnet coupling buffer protector. The permanent magnet coupling buffer protector comprises a driving disc, a driven disc and a shaft sleeve with an limiting bafflering and an intermediate protruding part on the outer surface, wherein the shaft sleeve is fixed to a driven shaft through a power lock, and the driving disc is supported on the shaft sleeve through abearing; the driven disc and the shaft sleeve are slidably connected and transmit torque, and the shaft sleeve separately limits slidable positions, away from and close to the driving disc, of the driven disc through the limiting baffle ring and the intermediate protruding part; an inner recess part accommodating a part of a rolling body is formed in the end surface of the driving disc, and the driven disc is provided with a slide for enabling the rolling body to roll. The permanent magnet coupling buffer protector slips without vibration during coupling transmission of torque, provides an infinite buffer angle, automatically resets after slipping, completely eliminates the torsional vibration generated by variable loads, eliminates impact loads and vibration of a high-speed gear box of awind generation set, reduces the maintenance and repair cost of the gear box, prolongs the service life of a complete set of transmission system equipment, and improves the safety factor of an entiresystem.

The invention relates to the waterproof device of a projector outdoor box. The device comprises the outdoor box. The air outlet of the outdoor box is provided with a waterproof baffle plate so that water can be prevented from entering into the projector outdoor box during air exhausting. An air outlet filter screen is arranged below the waterproof baffle plate of the air outlet of the outdoor boxand is used for filtering large particles of pollutants, dust and bubbles in the air. Through a waterproof design in the invention, moisture is effectively prevented from entering into the projector outdoor box, and pollutants in the air can also be effectively prevented from entering into the box. The waterproof device can be used to fully protect the projector outdoor box, the service life is prolonged and maintenance cost is saved.

The invention provides a casting process of a chemical pump shell. The casting process comprises the specific steps that ordinary steel scrap, pig iron, chromium iron and tungsten iron are put into avacuum induction furnace according to the proportion, refining is conducted, CuO is added into molten metal liquid, and then metal round rods are formed by casting; the metal round rods are put into an electron beam smelting furnace until the metal round rods smelt completely; Pt is added into a metal solution, and then the needed chemical pump shell is formed by casting; and a compact carbon fiber material is cut to the shape matched with the chemical pump shell and attached to the inner wall of the chemical pump shell, and then heating forming solidification is conducted. The casting processof the chemical pump shell has the beneficial effects that by adding CuO, the excellent corrosion resistance of CuO is adopted, and the corrosion resistance of whole metal can be effectively improved; the contents of harmful impurity elements such as O, N, and S in the alloy smelting process can be greatly reduced by using electron beams to smelt alloys, and the high strength, high toughness andhigh corrosion resistance of the metal are ensured; and in addition, the corrosion resistance can be further be improved by combining the Pt element.

The invention discloses a steel plate bending machine. The steel plate bending machine comprises a bottom plate, a workbench, a transmission device and an impact hammer. The workbench and the transmission device are fixed to the bottom plate. The workbench is provided with a groove. The bottom face of the groove is in an arc shape. A thermal infrared human body inductor is embedded in the side face of the groove. The impact hammer is fixedly connected to the transmission device. The impact hammer is arranged above the groove of the workbench. The impact hammer comprises a hammer head, a hammer tail mass block, a hammer plate, a hammer rod, an upper spring and a lower spring. The hammer head is welded to the bottom end of the hammer rod. The bottom face of the hammer head and the bottom face of the groove are matched. The hammer rod is sleeved with the lower spring, the hammer plate, the upper spring and the hammer tail mass block from bottom to top in sequence. A lock nut is arranged at the top end of the hammer rod. By means of the manner, the reactive force of the impact hammer can be buffered, the service life of the transmission device can be prolonged, and the maintaining cost of the steel plate bending machine is reduced; and personal safety of operators can be guaranteed, and accidents are avoided.