33results about How to "Free installation" patented technology

The invention discloses a soil pesticide residue degradation treatment device, and relates to the field of soil treatment, the soil pesticide residue degradation treatment device comprises: a mobile frame, the mobile frame is provided with a placing area and an accommodating cavity; the lifting mechanism comprises a lifting seat and an electric cylinder connected with the lifting seat; the multiple soil loosening and pesticide spraying mechanisms are rotationally installed at the bottom of the lifting base side by side, each soil loosening and pesticide spraying mechanism comprises a rotating disc, a pesticide spraying pipe is fixedly embedded in the middle of each rotating disc, a rotating connector is connected to the top end of each pesticide spraying pipe, and four plate bases surround the pesticide spraying pipes; a plurality of soil loosening assemblies are installed on the side, away from the pesticide spraying pipe, of the plate base from top to bottom at equal intervals. Hardened soil is subjected to crushing and loosening treatment through the multiple soil loosening and pesticide spraying mechanisms, meanwhile, degradation pesticide liquid is sprayed through the multiple soil loosening and pesticide spraying mechanisms, the degradation pesticide liquid can effectively make contact with the loose soil, permeation of the degradation pesticide liquid is facilitated, and the degradation treatment effect is improved.

The embodiment of the invention provides a vacuum compression bed and a compression storage method. The vacuum compression bed comprises a horizontally-placed cuboid bed body and a bed head connected to one end of the bed body. The bed body and the bed head are made of foamed sponge; the size can be compressed before transportation, and transportation is convenient.

The invention belongs to the field of building curtain walls, and particularly relates to a unit structure adapting to free-form surface angle change and an installation method of the unit structure. A stand column mold comprises a first stand column and a second stand column which are matched with each other, and the protruding section of the first stand column penetrates into the inner concave end of the second stand column; the angle between the first stand column and the second stand column is adjusted through a rotating part; cushion frames are mounted at the bottoms of the first stand column and the second stand column; according to the unit structure composed of the stand column mold and the cross beam mold, the stand column and the cross beam can be positioned by adjusting the stand column or the cross beam no matter whether the stand column and the cross beam are adaptive to the transverse angle or the vertical angle, and when the glass curtain wall is installed, only a small number of prefabricated stand column molds and cross beam molds are needed to adapt to free-form surface angle changes; the cross beam mold is of a separated structure, the bottom cross beam and the insertion cross beam can adjust the transverse bending angle so as to adapt to the change of the vertical section angle, meanwhile, the top cross beam is not limited by the bottom cross beam and the insertion cross beam, installation is free, and the structure is simple.

The utility model discloses a badminton lamp with latch switch, it includes the shell, is equipped with battery in it, latch switch includes the hand grip block extending to the outside of shell, is equipped with the insulating septum in the shell to and is connected in the connecting piece between the hand grip block and insulating septum, metal spring piece sets up between battery and insulating septum, one side abuts at battery negative pole, light emitting part includes led lamp pearl and sets up first pin and second pin on led lamp pearl, and first pin abuts at battery positive pole, and led lamp pearl has the light -out state and the bright light state, and in the light -out state, the insulating septum sets up between metal spring piece and second pin, in the bright light state, metal spring piece and second pin direct contact, the utility model discloses can be through manual insertion and pulling out latch switch to control the bright and extinguishing of led lamp pearl, and the operation is convenient, need not to install circuit board, and the cost is lower, in the process of hitting badminton, also can not appear the situation of false touch switch, and the structure is stable.

The application relates to the technical field of CAE preprocessing and cloud cooperation, and discloses a lightweight CAE geometry engine and a cloud real-time cooperation method and system. A cloud server acquires an original CAE geometry model, performs topological simplification and data compression on the original CAE geometry model, and generates a lightweight geometry data file containing multiple resolution levels; the cloud server pushes the received difference data packet to other online cooperation terminals; the other cooperation terminals parse the unique version number carried by the difference data packet through a locally loaded WebAssembly geometry engine module, and perform operation replay updating on the local geometry model according to the differential data contained in the difference data packet. According to the scheme, the original CAE model data volume is reduced by 90%-95%, the WebAssembly engine realizes a 100,000-face model rendering frame rate of 30-60 fps, and the operation response delay is less than or equal to 100 ms, thereby breaking through the performance bottleneck of browser-side geometry processing.

The utility model discloses efficient sand blowing equipment for large-scale sea reclamation engineering, which comprises a water supply pipeline mechanism, the water supply pipeline mechanism is arranged in a water source, a water outlet end of the water supply pipeline mechanism is connected with an overwater mixed flow pipeline, a sand supply funnel is arranged on the overwater mixed flow pipeline, and a water outlet of the overwater mixed flow pipeline is connected with a sand blowing mechanism. Further, the water supply pipeline mechanism comprises a water supply pipe and a water pump, the lower end of the water supply pipe extends into the seawater, the upper end of the water supply pipe is connected with the overwater mixed flow pipeline, and the water pump pumps the seawater through the water supply pipe and feeds the seawater into the overwater mixed flow pipeline. (1) sand can be directly unloaded to the funnel by adopting the belt ship, a water area does not need to be expropriated as a sand storage pit, and hydraulic reclamation pipelines are immersed pipes, so that the water area passing is not influenced; (2) the water flow of the active water supply system washes the funnel through the guide pipe and carries the machine-made sand to enter the dredge pump to prevent clogging; and (3) the capacity is high, the pumping capacity of machine-made sand is effectively realized by additionally arranging a water pump and a side pipe orifice, and the actually measured maximum sand blowing efficiency can reach 4760m < 3 > / h.

The utility model provides a wind power tower multidirectional strain monitoring device based on fiber bragg gratings, and relates to the technical field of wind power tower monitoring. Comprising a decagonal mounting shell, a strain sensor center pile and a plurality of insertion piles, the mounting shell is composed of a bottom shell, a top shell and ten connecting plates, the center pile is arranged in the center of the bottom shell, and insertion openings are formed in the side edges of the center pile. The splicing piles are hollow cuboids, grating strings are arranged in the splicing piles, and the two ends of each splicing pile are optically connected with the center pile and the adjacent splicing piles through splicing plugs respectively, so that 360-degree all-circumferential strain monitoring is achieved. The device adopts an all-fiber, passive and modular design, is convenient to install, anti-interference and maintenance-free, and is suitable for distributed strain monitoring of the wind power tower.

The present invention belongs to the field of electric power technology, and discloses a fast arc extinguishing method of a fast switch in parallel with a solid-state switch. The present invention utilizes the fast action of the solid-state switch to quickly eliminate arc grounding faults, and at the same time, the fast switch is connected in parallel, which reduces the time for the solid-state switch to be put into operation, avoids heat loss, and does not require the installation of a cooling system, which is of great significance for quickly extinguishing the grounding arc, reducing the cost of arc extinguishing devices, and improving the reliability of arc extinguishing technology.

The utility model provides a kind of bridge crossing device and combine harvester, comprising: bridge crossing shell;Driving mechanism, including driving motor and reduction box, the reduction casing of the reduction box is installed in the bridge crossing shell, the driving motor is installed in the reduction casing, the reduction box is provided with input interface and output interface, the input interface and the driving motor transmission connection;Bridge crossing lower shaft, install in the bridge crossing shell and with the output interface transmission connection, the bridge crossing lower shaft is used to transmit power to the cutting platform of the combine harvester;Bridge crossing upper shaft, install in the bridge crossing shell and with the bridge crossing lower shaft transmission connection, the bridge crossing upper shaft is used to transmit power to the conveying system of combine harvester.The utility model can significantly improve the integration of system and mechanical efficiency, and omit transmission component can make that space installation is more free, especially suitable for the installation demand of compact side space of combine harvester.

The high-strength structural part machining tool comprises a first installation block and a second installation block, the bottoms of the first installation block and the second installation block are each provided with a reinforcing assembly, each reinforcing assembly comprises a sliding rod which is connected with one side of the first installation block in a sliding and inserted mode, and the outer portion of the bottom of each sliding rod is fixedly connected with a reinforcing frame. A stop block is coaxially fixed to the outer wall of the top of the sliding rod, the area of the stop block is larger than that of the top end of the sliding rod, the sliding rod is sleeved with a spring, the spring is located between the first mounting block and the reinforcing frames, and the two reinforcing frames are each internally provided with a binding assembly; by arranging the reinforcing assembly and the binding assembly, the tool can move along with movement of a machining part, it is guaranteed that external force is applied to the top of a workpiece before the workpiece is machined, and the state of the machined workpiece is more stable.

The utility model relates to the technical field of water purification, particularly provides water purification equipment, and aims to solve the problem that the use experience of a user is influenced due to poor washing effect and waste of water resources when the conventional water purification equipment is used for washing a reverse osmosis membrane filter element. The water purification equipment comprises a reverse osmosis membrane filter element, a flushing pipeline and a dirt collection component, and the water inlet end and the water outlet end of the flushing pipeline are communicated with the wastewater end and the water inlet end of the reverse osmosis membrane filter element respectively, so that the flushing pipeline, the water inlet end of the reverse osmosis membrane filter element and the wastewater end of the reverse osmosis membrane filter element are sequentially communicated to form a flushing loop; the water purifying equipment can drive liquid in the flushing loop to flow circularly, and the dirt collecting component is arranged on the flushing loop and used for collecting dirt. According to the reverse osmosis membrane filter element washing device, a washing loop can be formed to circularly wash the reverse osmosis membrane filter element, washed dirt can be collected, secondary pollution to the reverse osmosis membrane filter element is prevented, the washing effect is improved, water resources are saved, and the use experience of a user is improved.

This invention belongs to the field of semiconductor manufacturing technology, specifically relating to a wafer exposure machine with an external variable light intensity attenuation device. It includes a mask stage and an illumination system, with the illumination system positioned above the mask stage. The machine also includes a variable light intensity attenuation device disposed between the mask stage and the illumination system. By externalizing the variable light intensity attenuation device and placing it between the mask stage and the illumination system, this invention not only achieves light intensity attenuation to meet the requirements of exposure processes with different light intensities, but also allows for convenient and quick adjustment of the light intensity attenuation level without the need for attenuation filters within the illumination system, significantly improving the machine's efficiency.

The utility model provides a water purifier which is provided with a raw water inlet, a hot water outlet and a water outlet and further comprises a filter assembly, a zero-pressure valve, a heating module and a pressure release valve which are arranged in series, a water inlet of the filter assembly is connected to the raw water inlet, and a water outlet of the filter assembly is connected to a water inlet of the zero-pressure valve; the heating module comprises a heating pipe and a connecting pipe, the heating pipe is connected between the water outlet of the zero-pressure valve and the hot water outlet through the connecting pipe, the connecting pipe has first bearing pressure, and a joint of the connecting pipe has second bearing pressure; a water inlet of the pressure release valve is connected to a water outlet of the zero-pressure valve, a water outlet of the pressure release valve is connected to the water outlet, the pressure release valve is constructed to be opened when the pressure of the water inlet of the pressure release valve is larger than or equal to a preset pressure threshold value, and the preset pressure threshold value is not larger than any one of the first bearing pressure and the second bearing pressure. And the pressure release valve can release the purified water to the water outlet, so that the water path where the heating module is located is always kept at proper pressure, and the water purifier can normally output hot water.

The application discloses a preparation method of a monopropellant monolithic catalyst, selects a honeycomb ceramic carrier which has good heat conductivity and heat shock resistance and can keep stable structure in a high-temperature environment, coats a modified alumina coating on the surface of the ceramic carrier, and then loads noble metal as a catalytic active component through an impregnation method, so that the connectivity between the noble metal active component and the carrier is enhanced, the noble metal loading capacity is increased, the coating firmness is improved, the catalyst breakage rate is significantly reduced, and the catalyst thermal stability is improved. The monolithic catalyst prepared by the application has high catalytic activity, good coating firmness, and the modified alumina coating can also increase the strength of the carrier, can effectively inhibit sintering and phase change of the carrier in a high-temperature environment, improve the thermal stability, and is not easy to break in a high-temperature environment.

The utility model discloses a detection device for hydraulic cylinder production, which comprises a detection table, a detection groove, a hydraulic cylinder, a position measuring plate and supporting legs, the detection groove is arranged at the top of the detection table, the hydraulic cylinder is fixedly connected to the left side of the bottom of the detection groove, the position measuring plate is arranged on the left side of the hydraulic cylinder, and the supporting legs are arranged on the detection groove. The supporting legs are fixedly connected to the four corners of the bottom of the detection table, mounting grooves are formed in the front side and the rear side of the top of the detection table, mounting holes are fixedly connected to the tops of the inner sides of the mounting grooves, protective frames are fixedly connected to the tops of the mounting holes through bolts, and protective covers are fixedly connected to the inner sides of the protective frames through shaft pins. The utility model solves the problems that hydraulic oil leaks or sprays due to high pressure generated by operation errors or equipment faults during the operation of a hydraulic system, and the equipment is not provided with a protective structure, so that the leaked hydraulic oil scalds and causes other injuries to operators, fire disasters are caused when open fire occurs, and the safety of the equipment is ensured. And the working efficiency of the equipment is influenced.

The utility model discloses a detachable simple type vertical ladder stand hanging device, which comprises a steel column body and a vertical ladder stand, a hanging mechanism is arranged between the steel column body and the vertical ladder stand, the hanging mechanism comprises two steel column ear plates fixed on the steel column body, the two steel column ear plates have the same specification and are positioned at the same height, and the two steel column ear plates are fixed on the steel column body. A clamping plate and round steel are arranged between the two steel column lug plates, the clamping plate is arranged between the two steel column lug plates and fixedly connected with the steel column lug plates through installation bolts, the round steel is arranged on the clamping plate, the lower end of the round steel is located below the clamping plate, and a lantern ring is arranged at the lower end of the round steel. Hooks are arranged at the upper end of the vertical crawling ladder, the number of the hooks corresponds to the number of the lantern rings, the hooks are hung on the lantern rings, the structure is simple, materials are convenient to obtain, machining is easy, the device can be repeatedly used, operation is convenient and fast in the construction period, safety and reliability are achieved, and the construction efficiency is effectively improved.

The utility model discloses a regulator for invisible screen window reel, including: adjusting portion and reset portion, the adjusting portion includes shell and trigger piece with shell movable connection, the reset portion includes elastic piece and limit piece, the elastic piece presses the limit piece, by extruding the trigger piece far away from the end face of shell, the limit piece is pressed by the elastic piece. And when the buckling state is released, the opposite limiting pieces are subjected to the acting force of the elastic pieces and are used for rebounding and resetting. The utility model provides the regulator for the invisible screen window reel, the regulation is simple and the installation is not needed, firstly, the spikes are matched with the convex teeth, the spikes are used for controlling a one-way knob, specifically, the structure of the spikes is meshed with the convex teeth, and finally, when a user wants to carry out reset regulation, the inner column is extruded, so that the spikes can be reset. When the shaft piece rotates, the acting force is transferred to the elastic piece through the limiting piece, meshing of the protruding thorns and the protruding teeth is released, control of the inner column is released, then the elastic piece rebounds, and the shaft piece returns to the initial state.

The present invention discloses a transfer device, which is used to transport plate-like components, including: a temporary storage platform device, which is used to place the plate-like components, and a carrying platform device, which is located on one side of the temporary storage platform device; the carrying platform device includes a supporting plate frame, a first driving mechanism for driving the supporting plate frame to approach or move away from the plate-like components, and a second driving mechanism for driving the plate-like components to move from the temporary storage platform device to the supporting plate frame; wherein: the second driving mechanism includes: a spiral component, a spirally extending guide groove is formed on the outer periphery of the spiral component; a columnar component, which includes a plurality of columnar components, and the plurality of columnar components are sequentially arranged at the bottom of the plate-like components along the moving direction of the supporting plate frame; after the first driving mechanism drives the supporting plate frame to approach the plate-like components on the temporary storage platform device, the spiral component rotates to cause the columnar component to slide along the guide groove to drive the plate-like components to move toward the supporting plate frame.

The utility model discloses a prefabricated concrete primary and secondary beam connecting node free of a mold, installation and support, which is characterized in that an installation boss is arranged at the bottom of a prefabricated primary beam, so that when the prefabricated secondary beam is erected on the prefabricated primary beam, the installation boss can support the prefabricated secondary beam, and the installation and the removal of a temporary installation support are avoided; meanwhile, cast-in-place connecting grooves are formed in the ends of the prefabricated secondary beams, cast-in-place space is provided for cast-in-place concrete, so that mounting and dismounting of formworks are omitted, construction efficiency is improved, construction cost is reduced, main beam reserved steel bars in the prefabricated main beams and secondary beam steel bars in the prefabricated secondary beams do not stretch out of the prefabricated main beams and the prefabricated secondary beams, and construction cost is reduced. The prefabricated main beams and the prefabricated secondary beams are convenient to transport and maintain; and meanwhile, the steel bar connectors are arranged at the ends of the main beam reserved steel bars, so that the secondary beam steel bars can be connected with the main beam reserved steel bars through the steel bar connectors, and the construction efficiency is improved.

The utility model provides an acrylic modeling wall face which comprises an acrylic wall face plate, at least one illustration groove and at least one bracket plate are arranged on the front face of the acrylic wall face plate, an opening is formed in the top of the illustration groove, the bracket plate is arranged in the horizontal direction, and the illustration groove, the bracket plate and the acrylic wall face plate are integrally formed. According to the utility model, by utilizing the transparency and plasticity of the acrylic material and arranging the picture inserting groove and the bracket plate which are integrally formed with the wall panel, articles such as decorative pictures or photos, books and the like can be conveniently placed on the wall, additional punching and mounting are avoided, the manpower and the cost are saved, and the production efficiency is improved. The size, the position and the number of the illustration grooves and the bracket plates can be designed and customized as required, so that the decoration and storage requirements of different customers are met, and the wall surface is more three-dimensional and attractive in appearance compared with a common wall surface.

The utility model discloses an LED screen chaining folding mechanism which comprises a bottom plate, the right side of the top of the bottom plate is fixedly connected with a box body, the top of the box body is movably connected with a motor through a first bearing, the output end of the motor is fixedly connected with a threaded rod, and the top of the surface of the threaded rod is sleeved with a threaded sleeve. The left side of the threaded sleeve is fixedly connected with a movable block, and the left side of the movable block penetrates to the left side of the box and is fixedly connected with a first adjusting box. The air cylinder works to drive the toothed plate to move downwards, the gear and the rotating rod drive the LED display screen to rotate till the LED display screen rotates to be in a horizontal state, the motor works to drive the threaded rod to rotate, and the threaded sleeve and the movable block drive the first adjusting box and all structures on the first adjusting box to move downwards as a whole. The rotary folding and storage device for the LED display screen is convenient to use, does not need to be installed, is convenient to carry, and is convenient for people to use.

The invention discloses a fault diagnosis method and device for a compressor and a water chilling unit, and belongs to the field of fault diagnosis. The fault diagnosis method for the compressor comprises the following steps: acquiring actual winding temperature information and a first target threshold value of a motor in the compressor; on the basis of the actual winding temperature information and the first target threshold value, under the condition that a motor cooling fault is determined, the fault type of the compressor is determined on the basis of at least one of the power information and the pressure difference information of the motor; and based on the fault type, the fault level of the compressor is determined. According to the fault diagnosis method of the compressor, the detection precision and accuracy are high, on the basis of motor cooling fault detection, the fault type is further diagnosed, the fault level is determined based on the fault type, effective guidance can be provided for operation maintenance after the fault occurs, and the reliability and safety of operation of the compressor motor are effectively improved.

The present invention relates to a mobile multifunctional cleaning and care device and a loading and unloading method thereof, comprising a main unit with casters, a clean water bucket installed above the main unit, a sewage bucket installed above the clean water bucket, an air outlet channel and a ventilator installed in the main unit, a blower assembly connected to the air outlet channel installed on the side wall of the main unit, a shower assembly connected to the clean water bucket via a micro water pump arranged in the main unit is also installed on the side wall of the main unit, a water-gas separation channel is also arranged between the main unit, the clean water bucket and the sewage bucket, a water filtering and ventilation device located in the sewage bucket is arranged in the water-gas separation channel, an air inlet end of the water-gas separation channel is connected to the shower assembly, an air outlet end of the water-gas separation channel is connected to the air outlet channel, and an electrical control assembly is also arranged in the main unit. The device can assist manual operation in completing the main processes of spraying warm water, cleaning hair, absorbing water and drying hair in the shampooing operation.

The invention discloses a hot melting tool and a hot melting tool driving method. The hot melting tool comprises a shell, a sliding frame, a main elastic piece, a pressing key and a one-way limiting structure, when the pressing key is in a non-pressing state, the one-way limiting structure is in one-way clamping connection with the sliding frame, and the sliding frame is locked and stopped in the moving direction towards the head end of the shell; when the pressing key is in a pressed state, the one-way limiting structure unlocks and releases the sliding frame, and the sliding frame can be pushed by the main elastic piece to move towards the head end of the shell. A plurality of linked mechanism kinematic pairs are arranged in the structure, the use experience of electric glue feeding is achieved completely through a mechanical structure, a novel glue outlet mode of feeding while pressing is provided, the gluing operation comfort is improved, and glue stick unlocking and rapid returning are achieved through pulling of a sliding gun bolt, so that rapid mounting of the glue stick is completed.

The utility model discloses a detachable fish dish containing support which is characterized by comprising a set of containing support bodies, a set of containing support bodies and a set of containing support bodies, and the set of containing support bodies comprises two containing support bodies; the storage support body is provided with clamping grooves used for clamping fish dishes and flavor dishes, and two plate feet are arranged at the bottom of the storage support body. The plate feet are respectively provided with an inserting groove which is clamped into the dish rack support, and a groove opening of each inserting groove is provided with a limiting strip. The plate feet of the storage support body are inserted into the same dish rack supports through the inserting grooves to adjust the distance, so that seasoning dishes can be placed, and fish dishes and other special-shaped dishes can be placed due to the fact that the plate feet are inserted into the dish rack supports in different rows and the distance is large. When not in use, the storage box can be detached for storage; in addition, due to the fact that the groove opening of the inserting groove is provided with the limiting disc, the limiting disc cannot slide or easily slide out after being inserted into the disc frame support, can be freely disassembled and assembled and is convenient to use.

The utility model belongs to the field of textile equipment, and particularly relates to a braid adjusting frame for a sewing machine, which comprises a disc, a stand column, a first clamping jaw, a support rod, a second clamping jaw and a mounting frame, the stand column comprises a first part and a second part, the first part is of a cylindrical structure, the first part is matched with the first clamping jaw, and the first part penetrates through the disc and protrudes out of the disc; the second part is inserted into the mounting frame, a step face is formed between the first part and the second part, the step face abuts against the mounting frame and limits the vertical column to move in the axial direction of the mounting frame, and the second part further comprises a third part which is inserted into the mounting frame and limits rotation of the vertical column. Rapid installation of the braid adjusting frame is achieved through plug-in type assembly of the first part and the second part of the stand column and the installation frame, height fixation of the installation frame is achieved through the limiting effect of the step face of the stand column and the installation frame, and relative rest of the stand column and the installation frame is achieved through the limiting effect of the third part of the stand column and the installation frame. And noise generated by rotation between parts is reduced.

The present invention relates to the technical field of solar energy utilization, in particular to a solar water heater. The solar water heater comprises a seat, a water tank and a vacuum tube, wherein the vacuum tube comprises an outer glass tube and an inner glass tube, wherein a glass partition is provided in the middle of the inner glass tube, and the upper end of the inner glass tube extends out of the outer glass tube to form a connecting section, wherein a rotating disk is provided in the connecting section, wherein the rotating disk is provided with a rotating shaft, wherein the rotating disk is provided with a rotating through hole, wherein a transparent sleeve is provided in the outer glass tube, wherein the transparent sleeve is provided with a reflective layer; wherein a connecting structure is provided between the transparent sleeve and the rotating disk; wherein the rotating disk drives the transparent sleeve to rotate and the two rotate in accordance with each other; wherein the rotating disk is provided with an inner friction section, wherein the inner glass tube is provided with an outer friction section, and when the inner friction section contacts the outer friction section, there is friction between the rotating disk and the inner glass tube, and both the inner friction section and the outer friction section are arc-shaped surfaces. The present invention provides a rotating disk and a connecting structure, so that the rotating disk can drive the transparent sleeve to rotate, and the overall structure is simple, and there is no need to install a light sensing unit, thereby saving costs.

The utility model belongs to the technical field of die casting technical equipment, and particularly relates to a foundation-free three-station molten steel casting ladle baking device which comprises a large chassis, a lifting mechanism, a rotating mechanism and a baking mechanism. The lifting mechanism is arranged on the large steel chassis without the civil foundation; the rotating mechanism is mounted on the lifting mechanism; the baking mechanism is mounted on the rotating mechanism; one end of the baking mechanism is a burner with a ladle cover, and the other end of the baking mechanism is a fan and a counterweight; an oil / gas pipeline is arranged on the baking mechanism, one end of the oil / gas pipeline is connected with the burner, and the other end of the oil / gas pipeline is connected with an oil source / gas source pipeline. The foundation-free three-station molten steel casting ladle baking device can ascend, descend and rotate autonomously, can work at multiple stations, meets baking of casting ladles of various specifications and models, and is high in efficiency, fuel-saving, flexible in mounting position and high in site adaptability.

The invention discloses a formwork-free and support-free concrete prefabricated frame beam column connecting joint and a connecting method, a supporting boss is arranged in the middle area of a prefabricated column, so that when the prefabricated beam is erected on the prefabricated column, the supporting boss can support the prefabricated beam, and mounting and dismounting of a temporary mounting support are omitted; the cast-in-place connecting groove is formed in the precast beam, a cast-in-place space is provided for cast-in-place concrete, and meanwhile the cast-in-place range is limited by the groove wall, so that mounting and dismounting of a formwork are omitted, the construction efficiency is improved, and the construction cost is reduced; furthermore, the beam steel bars in the precast beam do not extend out of the precast beam, so that the precast beam is convenient to transport and maintain; and meanwhile, the steel bar connectors are arranged at the ends of the column reserved steel bars, so that the beam steel bars can be connected with the column reserved steel bars through the steel bar connectors, and the construction efficiency is improved.