38results about How to "Avoid the disadvantage of fragile" patented technology

The present invention discloses a quantum dot packaging body which comprises a first packaging medium which is optically transparent and at least two quantum dot glass bodies dispersed in the first packaging medium. Each quantum dot glass body comprises glass located at the outer layer, a second packaging medium which is optically transparent and located at the inner layer, and at least one type of quantum dots dispersed in the second packaging medium. The first packaging medium consists of high polymer materials. By packaging the packaging body quantum dots in the glass body with a certain volume, the fragile disadvantages of glass tubes are avoided, and at the same time, a relative high luminous efficiency is kept. The present invention also discloses a light-emitting device, a backlight module and a display device. The present invention also discloses a preparation method of the quantum dot packaging body.

The invention discloses a high-temperature large area silicon carbide epitaxial growth device and a treatment method. The high-temperature large area silicon carbide epitaxial growth device comprises a closed working chamber made of stainless steels, a graphite reaction cavity chamber arranged in the working chamber and a heating component arranged at the periphery of the reaction cavity chamber, wherein a tray groove is arranged in the reaction cavity chamber, a tray which bears a silicon carbide substrate is arranged in the tray groove, the reaction cavity chamber is provided with a penetrating channel, and a gas inlet device and a gas outlet device are respectively arranged at two ends of the channel. During treatment, the silicon carbide substrate is put into the reaction cavity chamber and then vacuumized and heated, reaction gas is introduced into the reaction cavity chamber so as to allow epitaxial growth of the silicon carbide, and then the silicon carbide taken out. Compared with the traditional quartz tube structure, the high-temperature large area silicon carbide epitaxial growth device has a simple structure, is relatively easy to manufacture, is convenient to process and can be used for treating the silicon carbide with a larger area. In addition, according to the high-temperature large area silicon carbide epitaxial growth device disclosed by the invention, the working chamber is in a water-cooling stainless steel structure, has higher strength and is not easy to damage.

The invention relates to a winding drum support with an adjustable width. The winding drum support with the adjustable width comprises side plates, wherein both the left side and the right side of each side plate are bevel edges, a step surface is arranged at the upper end of each side plate, a first arc groove is formed in a first step of each step surface, a second arc groove is formed in a second step of each step surface, a third arc groove is formed in a third step of each step surface, a screw is welded to the left bottoms of the inner sides of the side plates, a screw is welded to the right bottoms of the inner sides of the side plates, the screws are sleeved with sleeves, the length of each sleeve is larger than twice the length of the corresponding screw, internal threads are arranged on the inner side of each sleeve, and the other end of each sleeve is connected to the screw at the corresponding position of the other side plate. According to the winding drum support with the adjustable width, due to the fact that the width is adjustable, the support can be used for supporting winding drums of different types in a classified mode; due to the fact the two side plates are directly supported by the ground, the defect that breakage occurs easily due to the adoption of a cantilever supporting method is overcome; due to the fact that all the arc grooves in the upper ends of the side plates are in contact with extending-out shafts of winding drums, the phenomenon that the winding drums still idle for a long time after the halt is avoided, unnecessary waste is reduced, and the winding drums can be supported more firmly and more reliably.

The invention r elates to a lap joint structure of power generation tiles. The lap joint structure comprises a first power generation tile, a second power generation tile and a lap joint component andis characterized in that the lap joint component comprises a first lap joint strip and a second lap joint strip, a first mounting groove is formed in one side of the first lap joint strip, a plurality of clamping pieces are arranged on the other side of the first lap joint strip in a protruding manner, a bent part is formed at the end of each clamping piece, the first mounting groove sleeves thefirst power generation tile, the first power generation tile is fixed in the first mounting groove through silicone sealant, one side of the second lap joint strip is provided with a second mounting groove in a concave manner, the other side of the second lap joint strip is provided with a plurality of clamp grooves, the second mounting groove sleeves the second power generation tile, an abuttingpart is formed at the end of each clamp groove, the clamping pieces are inserted into the clamp grooves, and the bent parts are abutted against the bottom surfaces of the clamp grooves. The lap jointstructure is good in waterproof effect.

The invention discloses an independent pilot-operated type flow control valve, comprising a main valve. An actuator part is arranged on the main valve and consists of a hydraulic control element manifold block and a pilot-operated type overflow valve, wherein the hydraulic control element manifold block is fixed on an upper valve cover of the main valve, the pilot-operated type overflow valve is fixed on the hydraulic control element manifold block which is connected with an inlet front pipeline of the valve through a medium collecting inlet pipe fitting assembly, and the pilot-operated type overflow valve is connected with an outlet rear pipeline of the valve through an outlet pipe connector assembly. The hydraulic actuating element of the control valve is composed of the manifold block and the independent pilot-operated type overflow valve which are in linkage with each other, and the action execution and the adjustment control are stable and agile. A piston type valve core resists high pressure and has a good sealing property and a long service life. The independent pilot-operated type flow control valve can be automatically closed in a low pressure state, has a check function when applied to an oil extraction system, has a fireproofing and obstruction functions when applied to an oil transmission system of an oil depot, and effectively overcomes the defects in the prior art.

The invention provides aerogel composite glass and a manufacturing method thereof. The aerogel composite glass comprises a first light-transmitting plate and a second light-transmitting plate; a spacing frame is arranged between the two light-transmitting plates to form a sealed cavity; the end part of a spacing strip is fixedly connected with the inner surface of the spacing frame to divide the sealed cavity into a plurality of isolation cavities; the isolation cavities are filled with aerogel plates; and the cross section of the edge part of the aerogel plates adjacent to the spacing strip is concave. The manufacturing method comprises the following steps: preparing the cavity, placing the spacing strip and the aerogel plate, and conducting sealing. The aerogel composite glass has excellent heat insulation property, light transmission property, sound insulation property, aesthetic property and the like, is particularly suitable for the fields of doors and windows, curtain wall glass,indoor partitions, daylighting roofs and the like of green buildings and ultra-low energy consumption buildings, and is simple in preparation process, suitable for industrial production and huge in application prospect.

The invention provides aerogel composite glass and a manufacturing method thereof. The aerogel combined glass comprises a first light-transmitting plate and a second light-transmitting plate, the spacing frame is bonded between the first light-transmitting plate and the second light-transmitting plate through sealant to form a sealed cavity, the end of the spacing strip is connected to the inner surface of the spacing frame to divide the sealed cavity into two or more than two isolation cavities, and the isolation cavities are filled with aerogel. The manufacturing method comprises the following steps of cavity preparation, parting strip placement, aerogel filling and sealing. The aerogel composite glass has good heat insulation property, light transmission property, lighting property, aesthetic property, sound insulation property and the like, is suitable for green buildings and ultra-low energy consumption buildings, and particularly suitable for the fields of doors and windows, curtain wall glass, indoor intervals, lighting roofs and the like of high-rise and super high-rise buildings, and is simple in preparation process, suitable for industrial production and huge in application prospect.

The invention provides a tool for measuring the gas-liquid two-phase heat flux density in a rocket engine, which comprises a temperature measurement base material and a circumferential heat insulationmaterial, and is characterized in that the temperature measurement base material is embedded into the circumferential heat insulation material; a plurality of thermocouples are pre-buried in a temperature measuring base material to serve as measuring points, the burying direction of the thermocouples is perpendicular to the airflow heat transfer direction in the rocket engine, the adjacent thermocouples are oppositely arranged in a staggered mode at equal intervals, and the working ends of all the thermocouples are located on the same straight line. Based on the thought of lumped capacitance,the measuring tool for dynamically measuring the gas-liquid two-phase heat flux density in the solid rocket engine in real time is designed, a temperature measuring base material is embedded into a circumferential heat insulation material, and a plurality of thermocouples are pre-buried in the temperature measuring base material to serve as measuring points; when the measuring points are used inparticle scouring or deposition positions in a rocket engine, the purpose of long-time survival in harsh environments such as high temperature, high pressure and the like of the engine can be achieved.

The invention provides aerogel composite glass and a manufacturing method thereof. The aerogel composite glass comprises a first light-transmitting plate and a second light-transmitting plate, the spacing frame is bonded between the first light-transmitting plate and the second light-transmitting plate through a sealant to form a sealed cavity; the sealed cavity is filled with a composite honeycomb core, the composite honeycomb core comprises a honeycomb core body and aerogel, the honeycomb core body is formed by arranging a plurality of through holes with the same height in parallel, the through holes are perpendicular to the first light-transmitting plate and the second light-transmitting plate in the height direction, and the through holes are filled with the aerogel. The manufacturingmethod comprises the steps that the honeycomb core containing the gel is directly placed into a drying kettle to be dried and then placed between the two light-transmitting plates to be assembled, andthe honeycomb core containing the gel is obtained. The aerogel composite glass disclosed by the invention not only has excellent properties of heat insulation, sound insulation, fire prevention, explosion prevention and the like, but also organically combines the effects of lighting, visualization, sun shading and the like, and is suitable for the fields of doors and windows, curtain wall glass,indoor intervals, lighting roofs and the like of green buildings and ultralow-energy-consumption buildings.

The invention discloses a wear-resistant thermocouple processing method and a wear-resistant thermocouple. The thermocouple processing method mainly comprises the steps that an appropriate metal tube is selected according to the design requirements; hot forging shrinkage processing is performed on one end of the metal tube so as to obtain a baffle end; and the baffle end is smoothed, and a baffle end through hole is processed on the baffle end and the temperature measuring end of a thermocouple wire penetrates into the baffle end through hole to be welded with a protective sleeve shell. The thermocouple manufactured by the method has high wear resistance and is not liable to be damaged and is low in processing cost. The invention also discloses the thermocouple which has high wear resistance and short response time.

The invention, which belongs to the field of geotechnical experiments, discloses a radial seepage instrument and an operation method thereof, thereby realizing the radial seepage experiment from the center to the periphery as well as the radial seepage experiment from the periphery to the center and realizing conversion between the two kinds of radial seepage experiments. The radial seepage instrument mainly includes a lower cover, an upper cover, an outer sleeve, a water-permeable cylinder and a water-permeable rod. A soil sample is in a circular ring shape. The water-permeable rod is inserted into the hole and is connected with the upper cover and the lower cover. Two main water paths flowing through the center hole and the periphery of the soil sample respectively are arranged in the radial seepage instrument to control water entrance and exit of the water paths; and thus water on one water path penetrates into the other water path along different radial directions of the soil sample to be discharged to a water volume measuring container. Therefore, internal gas can be exhausted as soon as possible conveniently at the early stage of the experiment; an effect of integration of one camera with two purposes is realized; and the structure is simple and resources and time are saved.

The invention provides aerogel composite glass and a manufacturing method thereof. The aerogel composite glass comprises a first light-transmitting plate and a second light-transmitting plate; a spacing frame is bonded between the first light-transmitting plate and the second light-transmitting plate through a sealant to form a sealed cavity; the sealed cavity is filled with a composite honeycombcore; the composite honeycomb core comprises a honeycomb core and aerogel; the honeycomb core is composed of a core body and a plurality of through holes which are arranged in parallel on the core body; and the aerogel is filled in the through holes. The manufacturing method comprises the following steps: vertically arranging the plurality of aerogels between the two light-transmitting plates, injecting the molten plastic into a gap between the aerogels, conducting cooling and molding, and finally conducting sealing. The aerogel composite glass disclosed by the invention not only has excellentproperties of heat insulation, sound insulation, fire prevention, explosion prevention and the like, but also organically combines the effects of lighting, visualization, sun shading and the like, and is suitable for the fields of doors and windows, curtain wall glass, indoor intervals, lighting roofs and the like of green buildings and ultralow-energy-consumption buildings.

The invention discloses a solar water heater collector pipe with high strength and high heat efficiency. The solar water heater collector pipe with high strength and high heat efficiency comprises a vacuum pipe and a collector pipe. The vacuum pipe comprises a polymethyl methacrylate pipeline; a flexible transparent protective film uniformly covers the outer side of the polymethyl methacrylate pipeline; the collector pipe comprises a metal heat conducting pipeline; support rods are fixedly connected between the metal heat conducting pipeline and the polymethyl methacrylate pipeline; a heat absorbing coating coats the outer side of the metal heat conducting pipeline; a tempered glass protective layer is arranged on the outer side of the heat absorbing coating; heat conducting shunting pipe pieces are arranged on the inner wall of the metal heat conducting pipeline; the vacuum pipe is arranged on a collector pipe installation base. The solar water heater collector pipe with high strength and high heat efficiency provided by the invention is simple in structure, selected materials are reasonable, and not only can the collector pipe be prevented from being damaged, but also the heat efficiency of the collector pipe can be improved.

The invention relates to the technical field of electrode boilers, and particularly relates to a solid heat storage electrode boiler comprising a boiler body, a heating and heat storage device which is arranged in the boiler body, inert gas filling in the boiler body, a circulating pipeline communicated with the boiler body and a heat exchanger which is installed on the circulating pipeline and connected with the user. The heat storage medium of the heating and heat storage device is made of a solid material, and heat stored by the heating and heat storage device comes from heat generated by resistance of the heating and heat storage device after the heating and heat storage device is powered on. The boiler has the advantages that heating and heat storage are integrated, the size of the whole heating and heat storage device can be greatly reduced, safety and reliability are high, the structure is simple, cost is low and steam with higher temperature can be outputted.

The invention relates to an auxiliary device for an illuminating lamp, and particularly relates to a heavy-current wire distributing, power taking and current shunting device. The heavy-current wire distributing, power taking and current shunting device comprises a cable wire, puncture needles, a base and an upper cover, wherein the upper cover cooperates with the base; the upper cover and the base are located above and below the cable wire respectively; the puncture needles penetrate through the upper cover and the cable wire from the top of the upper cover and are in contact with the base; the cable wire is a flat cable wire with a dumbbell-shaped cross section; wire cores of the cable wire are arranged at the end part of the dumbbell-shaped cross section in parallel; the puncture needles are rectangular parallelepipeds with cross sections in rectangular-ambulatory-plane shapes; the lower parts of the puncture needles are provided with openings cooperating with the wire cores of the cable wire; the top of the base is provided with a groove cooperating with the upper cover; the side surface, which intersects with the cable wire, of the base is provided with an open hole matched with the outer contour of the cross section of the cable wire; the top of the upper cover is provided with a bulge; the top of the bulge is provided with open holes through which the tops of the puncture needles are exposed.

The invention relates to a pay-off cylinder support. The pay-off cylinder support comprises a first side plate and a second side plate. A copper alloy baring pad is fixed to the top end of the left side of the first side plate in a rivet mode. A groove is formed in the top end of the first side plate. Both the left lateral side and the right lateral side of the first side plate are slopes. A groove which is the same as the groove in the top end of the first side plate is formed in the top end of the copper alloy bearing pad. The second side plate and the first side plate are symmetrically arranged, and a beam is arranged between the second side plate and the first side plate. The pay-off cylinder support has the advantages of being reasonable in structural design, low in cost, light in weight, convenient to move, small in size, small in occupied space and the like. The grooves in the front ends of the first side plate and the second side plate make direct contact with extending shafts at the two ends of the pay-off cylinder, pay-off tension force is controlled through sliding friction force of the extending shafts on the copper alloy bearing pad, instant stopping can be achieved when hard shutdown occurs in high-speed and low-speed production processes, no phenomena of much pay-off and thread collection can be generated, and material waste and work hour waste are reduced.

The invention discloses an outdoor bar lamp and a mounting method thereof. The outdoor LED bar lamp is good in waterproofness, high in integration degree, simple in assembling process and convenient to maintain. The outdoor bar lamp comprises a lamp rack, a lighting device, a protecting device, lateral sealing parts and wire clamping devices. The lamp rack is a long-strip body with the H-shaped section, the lamp rack is matched with the protecting device located on the upper portion of the lamp rack and the lateral sealing parts located at the two ends of the lamp rack to form a sealed cavity, and the lighting device is arranged in the sealed cavity. Each wire clamping device connected with an external electric wire is arranged at the bottom of the corresponding lateral sealing part and comprises a wire-clamping pricking clip, a conductive pricking pin and a wire clamping base, wherein the wire-clamping pricking clip is arranged on the wire clamping base bearing the external electric wire, the conductive pricking pin penetrates through the wire-clamping pricking clip to make contact with the wire clamping base, and the top end of the conductive pricking pin is connected with the lighting device through a wafer arranged in the corresponding lateral sealing part. The outdoor bar lamp is easy and convenient to mount through the plug type matching mode.

The invention discloses a bidirectional radial seepage instrument and a using method thereof, and belongs to the field of geotechnical experiments. The bidirectional radial seepage instrument can be used for the radial seepage experiments from the center to the periphery and can also be used for the radial seepage experiments from the periphery to the center, and mainly comprises a combination ofa base, an outer sleeve and a water-permeable cylinder, an upper cover and a loading frame. The radial seepage instrument is internally provided with a lower gasket, a soil sample and an upper gasketin sequence from bottom to top. The soil sample takes the shape of a circular column and a water-permeable rod is inserted into the hole. The radial seepage instrument is internally provided with twomain water channels flowing through the center and the periphery of the soil sample to control the inflow and drainage of the water channels, so that the water of one water channel can penetrate intothe other water channel along different radial directions of the soil sample, so as to flow into a water quantity measurement container. The bidirectional radial seepage instrument is convenient to discharge the internal gas of the instrument as soon as possible in the initial stage of the experiment, few in component and dual-purpose, and is capable of saving the resources and time.

The invention provides a combined warm supply and heat supply system suitable for severe cold area rural residences, and aims at solving the problem existing in severe cold area rural residence heating in China. The combined warm supply and heat supply system comprises an air-water solar heat collector, an indoor air supply port, a waste heat recycling device, an auxiliary heater and a heat accumulator, wherein the air-water solar heat collector is arranged outdoors and connected with the indoor air supply port through an air supply pipeline and is connected with the heat accumulator through awater conveying pipeline. The waste heat recycling device is arranged indoors, the heat inlet end is connected with a water discharge pipeline of a showering system and an exhaust pipeline of an exhaust system, and the heat exchange end is connected with the heat accumulator through a heat conveying pipeline. The auxiliary heater is connected with the heat accumulator and the indoor air supply port. Solar energy is utilized for heating air and water at daytime for supplying warm and heat into a room, and the low-price electricity is utilized at night for conducting auxiliary heating for the interior of the room. The system is simple in structure, convenient to operate, low in energy consumption, high in efficiency and suitable for areas, without centralized warm supply, in the massive severe cold rural areas.

The invention discloses a hand operating device for a clothes hanger. The hand operating device for the clothes hanger comprises a connecting rod, wherein one end of the connecting rod is provided with a sleeve; the other end of the connecting rod is provided with a handle installation seat; the setting directions of the sleeve and the handle installation seat are opposite to each other; the center of the sleeve is provided with a trepan boring; and the section of the trepan boring is cross-shaped. According to the hand operating device, the conventional circular trepan boring in the sleeve is changed into a cross-shaped trepan boring, so that higher matching reliability with a positioning needle of a guy rope fixing seat is realized, and the defect of easiness in damaging of the circular trepan boring is overcome. The hand operating device is simple in structure, and has a long service life.

The invention provides a television, a television control method and a television control system. The television comprises a kernel, a network set-top box interface module and an infrared signal receiver, wherein the kernel is provided with an infrared signal processing module; the network set-top box interface module is provided with a second infrared signal processing module; the infrared signal receiver is used for receiving and transmitting an infrared signal to the first infrared signal processing module and / or the second infrared signal processing module. The television control method comprises the following steps: receiving an infrared signal through the infrared signal receiver, and transmitting the infrared signal to the first infrared signal processing module and / or the second infrared signal processing module. The television control system comprises the television and the network set-top box interface module connected with the television, wherein the television and the network set-top box interface module share the infrared signal receiver. The television is simple in structure and attractive in appearance, and meanwhile the design is simplified and the defect that a cable has high probability of damage is avoided as a signal receiver does not need to be additionally arranged on a network set-top box by using the cable when the television and the network set-top box are used together.

The invention discloses mechanical parking equipment for a commercial vehicle. The mechanical parking equipment comprises a traction lifting mechanism, a lifting platform mechanism and a vehicle carrying plate storing and taking mechanism; the traction lifting mechanism comprises a main frame, a steel wire rope, a traction mechanism arranged on the main frame and the lifting platform mechanism sliding up and down in the main frame through the traction mechanism; the traction mechanism comprises a lifting motor and a speed reducer which are fixedly connected to the top of the main frame; an output shaft of the lifting motor is connected with transmission shafts; the transmission shafts are symmetrically arranged on the two sides of the lifting motor. Each transmission shaft is connected with a traction wheel through the speed reducer; first guide wheels are arranged at the two corners in front of the top of the main frame correspondingly; third guide wheels are arranged at the four corners of the top of the main frame correspondingly; and the top of the main frame is fixedly connected with a traction wheel seat. The traction wheel seat is provided with second guide wheels and traction wheels. The mechanical parking equipment is reasonable in structure, overall stress is relatively dispersed, and the stability of the equipment is improved.

The invention discloses an automatic packaging system for light steel keels and relates to the field of light steel keel production. The automatic packaging system comprises a powerless roller line, a lifting transplanting device, a first conveyor belt, an inward-folding turnover mechanism, a second conveyor belt, a cross-shaped bundle stacking mechanism, a conveying roller line, a PP band binding machine, a stacking machine, a rotary conveying roller, a packaging machine and an automatic control device of the whole system. The automatic packaging system following a light steel keel production line is designed, the inward-folding turnover mechanism is designed according to the specific characteristics for packaging of the light steel keels, the two light steel keels are fastened in a staggered manner and jointed with the conveying roller line through bundle stacking operation and cross-shaped rotation of the cross-shaped bundle stacking mechanism, and therefore the keels are bundled through PP bands, stacked and packaged. The whole packaging system is provided with a corresponding automatic control system, so that the light steel keels are automatically packaged, labor is saved, the labor intensity of workers is relieved, production efficiency is improved, automatic operation actions are more accurate, and the quality of finished products is improved. Equipment of the whole system is simple, packaging operation is quick, safe and efficient, repair is easy and convenient, investment is small, cost is low, packaging is more stable and standard, and the defect that common keel packages are likely to be damaged after being transported in a long distance is overcome.

The invention discloses an intumescent flame-retardant belt material for buildings and belongs to the field of building fire protection devices. The intumescent flame-retardant belt material applies to pipeline fire protection and comprises an intumescent flame-retardant belt, wherein the outer surface of the intumescent flame-retardant belt is coated with a casing, a support frame is mounted on the outer surface of the casing, a hoop is mounted outside the support frame, and clamp plates are distributed on upper and lower end surfaces of the hoop and make contact with end surfaces of the intumescent flame-retardant belt, the casing, the support frame and the hoop; the support frame is formed by inverted V structures uniformly distributed around the outer surface of the casing, and gaps are formed between adjacent inverted V structures and in internal spaces of the inverted V structures; a plurality of auxiliary intumescent holes are formed in the intumescent flame-retardant belt, andheat conducting bars are mounted in the auxiliary intumescent holes. The novel foam type flame-retardant belt material for the buildings is high in flame retardant efficiency, intumescent efficiency,intumescent capacity and self-stability, quite high in size adaptability, highly water-resistant and cement-resistant.

The invention discloses a wear-resisting blocking-resisting permanent magnet wet type coarse particle preconcentration magnetic separator which comprises an ore feeding device, a tank (7), a barrel (1), a driving device of the barrel, a magnetic system (8), a magnetic regulating device (10), an ore unloading flushing water pipe (9), a concentrate box (4) and a rack (3). The ore feeding device is formed by combining a mixing pool (6), an ore feeding water pipe (13) and an ore feeding hopper (12). A water outlet of the ore feeding water pipe (13) is located in the mixing pool (6), and the ore feeding hopper (12) is of a dustpan-shaped structure. The magnetic wrap angle of the magnetic system (8) ranges from 130 degrees to 145 degrees. A vulcanized rubber composite bonding ceramic sheet is arranged on the surface of the barrel (1). A forced ore unloading device (5) is arranged in the concentrate box (4), and a spiral forced conveying structure is adopted in the forced ore unloading device (5). A magnetic field work area is divided into a preconcentration area, a separation area and an ore unloading area. By means of the wear-resisting blocking-resisting permanent magnet wet type coarse particle preconcentration magnetic separator, ore can be evenly and loosely fed to the surface of the barrel, the situation that the tank is blocked due to mineral sedimentation is not prone to happen, the wear resisting capacity of the tank and the barrel is high, and high-magnetic minerals can be effectively caught.

The invention relates to a lift car for a dredger with a buffering device, and belongs to the technical field of lifts. The lift car for the dredger with the buffering device is simple in structure. When in use, the pressure borne by the inner box of a lift is transmitted to an elastic medium layer through a supporting plate, the supporting plate slides upwards or downwards in a cabinet body, andthe elastic medium layer is stressed with pressure to form elastic potential used as buffering power so as to reduce the pressure stressed by the inner box. When the supporting plate goes down to theposition of a cam, the inner box is prevented from going on to move downwards. It can be effectively avoided that passengers panic because the inner box goes down for too much. Also, it is reduced that because an inner box goes down for too much, the inner box cannot return to the original position in time after a lift stops, and unwanted safety accidents are caused further after the door of the lift opens.

A forged artistic railing frame with straight rods for door or window is made up through extruding the aluminium material to obtain the long straight rods with female spiral threads, extruding or punching needed aluminium elements, forging them to become decorative parts, attaching the decorative parts onto said long straight rods, coloring, cutting short said straight rods, and installing the short straight rod onto a frame by screws.

The invention discloses a mold structure capable of achieving core pulling with arc-shaped inclined sliders. The mold structure comprises a movable mold and a stationary mold. A cavity is formed between the movable mold and the stationary mold. The movable mold comprises the inclined sliders, a movable mold frame, a movable mold bottom plate and a movable mold core fixing plate. The mold structure is characterized in that the inclined sliders are the arc-shaped inclined sliders with circular-arc-shaped bevel edges; the movable mold frame is provided with circular arc guide sliding grooves of which the circle centers coincide with the circle centers of the bevel edges of the arc-shaped inclined sliders; the radian of the circular arc guide sliding grooves is matched with the radian of the bevel edges of the arc-shaped inclined sliders; and push rods are also included and penetrate through the movable mold bottom plate and the movable mold core fixing plate, one ends of the push rods are in abutting joint with the lower end faces of the arc-shaped inclined sliders. Limiting grooves are formed in the circular-arc-shaped bevel edges of the arc-shaped inclined sliders, and the movable mold frame is provided with limiting pins corresponding to the limiting grooves. The effect that after the movable mold and the stationary mold are opened, the inclined slides can obtain large puling distance is guaranteed, so that core pulling is finished accurately, the action is stable and reliable, and the situations that tilting occurs suddenly and the side edges of the inclined sliders are damaged are not prone to occur. The mold structure is simple and low in manufacturing cost.