36 results about "Solid base" patented technology

The utility model relates to dust collector brush injection mold with the technical field of guiding effect, especially dust collector brush injection mold with guiding effect, including upper die, the upper die is connected with the pouring gate and is provided with, the upper die bottom fixedly connected with guide pin, the guide pin outer wall sliding connection has the movable platen, the guide pin lower segment outer wall sliding connection has the support plate. This injection mold is connected with the guide pin of upper die bottom fixedly connected, and the stable and accurate direction of the movement of movable platen is provided. In the process of mold opening and closing, the movable platen along guide pin smooth sliding, cooperate the limit ring and ensure that the movable die and the fixed mold accurate alignment with the limitation of movable platen movement range. This design effectively avoids the dimensional deviation caused by mold misregistration, so that the size precision of injection molding dust collector brush is reliably guaranteed, greatly improves the compatibility of brush and dust collector, reduces the scrap rate caused by size, and lays a solid foundation for producing high-quality dust collector brush.

This utility model relates to the field of curtain wall installation technology, and in particular to an adjustable support for a steel structure of a building curtain wall, including a support, a support tube, and a screw cap. A support tube is fixedly connected to one side of the support, and a screw cap is fixedly connected to one end of the support tube. The support tube includes a support tube body, an inflatable anti-slip device inserted into the inner side of the support tube body, a partition fixedly connected to the inner side of the support tube body, an air inlet at one end of the support tube body, and a support rod fixedly connected to the outer side of the support tube body. A threaded groove is provided on the inner side of the support tube body. The inflatable anti-slip device includes a solid base, an inflation port on the outer side of the solid base, and an air supply strip hole inside the solid base. In this utility model, through the inflatable anti-slip device and the insertion bolt, it is possible to reinforce the minor pits between curtain walls while fixing the curtain wall installation, filling the gaps at the edges of the curtain wall panels while maintaining the stability of the curtain wall.

The invention discloses a construction evaluation method for building masonry, which comprises the following steps: establishing a stratum acquisition area in a construction area, acquiring a soil sample, and dividing the soil sample into a hard soil layer and a soft soil layer according to the water absorption of the soil layer; according to parameters of different stratums, design parameters of a foundation pile and a foundation ground beam are formulated, the foundation pile and the foundation ground beam serve as a foundation of a construction building masonry, a simulation model is established according to data of the foundation pile and the foundation ground beam, and stress needing to bear the building masonry is applied to the simulation model. And evaluating the stability of the foundation piles, the foundation ground beams and soil layers and rock stratums under the foundation, and giving construction suggestions. According to the scheme, detailed stratum test data and a comprehensive stability analysis method of construction analogue simulation are combined, so that the safety and the reasonability of the construction design scheme of the building masonry are ensured, and a solid foundation is provided for construction safety and smooth service.

The invention discloses an anti-abrasion combined concrete layered lining structure of a canal spillway in the field of water conservancy projects, the whole lining structure is of a V-shaped structure, and the lining structure comprises a fixed base layer, an anti-abrasion combined concrete layered lining layer and an anti-abrasion combined concrete layered lining layer, the buffer layer is poured on the surface of the solid base layer; the impact abrasion layer is poured on the surface of the buffer layer; the rigidity of the impact-wear layer is greater than that of the solid base layer; the rigidity of the solid base layer is greater than that of the buffer layer; the invention further discloses a construction method. The lining structure has the beneficial effects that the lining structure is arranged to be of a three-layer structure, the rigidity of the three-layer structure is designed in a differentiated mode, the scouring and abrasion layer on the outermost layer adopts high strength provided by UHPC to resist high-speed sand-containing water flow, and the buffer layer on the middle layer adopts rubber powder modified concrete to buffer and digest impact and compensate deformation; and the fixed base layer of the bottom layer adopts the original waste base as the material, thereby being more environment-friendly and higher in construction efficiency.

The utility model discloses a ballastless track beam body pre-embedded sleeve positioning tool, which relates to the technical field of constructional engineering, and comprises two positioning angle steels and a positioning plate, the side surface of each positioning angle steel is provided with a positioning groove, the lower part of the positioning plate is provided with a clamping groove, the number of the positioning angle steels is two, and the two positioning angle steels are arranged in parallel. The positioning plate is inserted above the positioning angle steel through the clamping groove; the positioning angle steel is made of angle steel materials, holes are accurately formed according to a bridge construction drawing to form the positioning groove, the width of the positioning groove is accurately matched with the diameter of the pre-embedded sleeve, and the clamping groove of the positioning plate and the inserting design of the positioning angle steel are matched, so that accurate positioning of the pre-embedded sleeve is guaranteed from multiple dimensions; the problem of position deviation caused by a traditional manual positioning mode is effectively solved, and a solid foundation is provided for accurate butt joint of follow-up construction parts.

The utility model belongs to the technical field of crushing devices, and particularly relates to a crushing device for solid waste concrete treatment, which comprises a base, a crushing mechanism is arranged on the base, a screening mechanism is arranged on the crushing mechanism, the crushing mechanism comprises a support, the support is fixedly mounted on the base, a box body is arranged at one end of the support, and the screening mechanism is arranged at the other end of the support. And the inner wall of the box body is rotationally connected with a crushing roller. By arranging the crushing mechanism, the purpose of crushing solid waste concrete is achieved, the capability of synchronously driving the conveying belt to operate is further achieved, through the design, the crushed solid waste concrete can be rapidly transferred, the efficiency of the treatment process is effectively improved, and meanwhile, by arranging the screening mechanism, the screening efficiency is improved. And the crushing mechanism can be cooperatively started during operation, so that the crushed solid waste concrete can be immediately screened, a solid foundation is laid for subsequent fine treatment of the solid waste concrete, and the practicability and high efficiency of the whole treatment scheme are remarkably enhanced.

A volumetric additive manufacturing (VAM) process for producing a solid object having a surface layer of a multifunctional material patterned thereon involves: contacting a surface of a solid base object with a liquid composition containing a photo-initiator and a multifunctional material covalently graftable to the surface of the solid base object; and, selectively irradiating the composition at the surface of the solid base object with patterned light, the irradiating being tomographic, to initiate covalent grafting of the multifunctional material to the surface of the solid base object to pattern only a portion of the surface of the solid base object with a layer of the multifunctional material grafted thereon, where the portion of the surface of the solid base object corresponds to the selectively irradiated surface of the solid base object.

The application relates to the technical field of big data and discloses a municipal road construction method and system based on BIM. The method and system collect basic data through big data technology and laser scanning and other means, form a database, eliminate information islands, reduce misunderstandings and delays caused by information asymmetry, and secondly, through the establishment of a complete city BIM model, collision detection of underground pipelines and road structures is realized, the safety hazards and economic losses in construction are reduced, meanwhile, virtual simulation technology enables each link of the construction process to be preplayed, the construction sequence and resource allocation are optimized, finally, through real-time data comparison and dynamic adjustment, the deviation in the construction process can be found and corrected in time, so that the construction quality and progress are ensured, a series of measures not only improve the overall efficiency of construction, but also lay a solid foundation for subsequent road operation and management, and promote the transformation of the construction industry to digitization and intelligentization.

The utility model discloses spiral steel pipe machining cutting equipment with a protection structure, and belongs to the technical field of spiral steel pipe cutting. A first electric push rod and a second electric push rod are installed at the upper end of a supporting table, and the telescopic end of the first electric push rod and the telescopic end of the second electric push rod are connected with a first abutting seat; the first abutting base is installed on the supporting table through a sliding rail, and a second abutting base matched with the first abutting base is installed on the supporting table. And through telescopic movement of the electric push rod, the first abutting seat moves along the sliding rail, the first abutting seat and the second abutting seat form a clamping cavity, and spiral steel pipes with different diameters are stably clamped. And the anti-skid rubber gasket increases friction force, stable clamping is ensured, and a solid foundation is provided for cutting operation. The sleeving piece, the protection straight strip and the protection arc-shaped plate are connected through the height adjusting screw rod and the distance adjusting screw rod to form an adjustable protection structure. According to the structure, the spiral steel pipe is effectively prevented from tilting or bursting out during machining, safety is improved, impact force is absorbed through the buffer strips, and the steel pipe is protected against damage.

The invention discloses a waterproof structure. The waterproof structure comprises a first concrete structure and a second concrete structure, a second concrete structure; the water stop component comprises a water stop belt, the water stop belt is arranged at the position of a construction joint between the first concrete structure and the second concrete structure, and the water stop belt is made of rigid materials and is formed by splicing a plurality of sections. According to the technical scheme, the water stop belt adopted by the waterproof structure is made of the rigid material and is stable in self shape, in the concrete pouring and vibrating process, the lateral pressure and construction load of fluid concrete can be effectively resisted, and the situation that a traditional rubber water stop belt is prone to bending or collapsing and other non-elastic deformation due to stress is avoided. Meanwhile, the water stop belt is designed to be of a multi-section splicing structure, the size and weight of a single component are reduced, deformation caused by self weight is overcome, meanwhile, each splicing unit can be independently and accurately positioned and fixed, and a solid foundation is laid for the reliability of the waterproof structure.

The utility model discloses an installation structure of a fire hydrant cabinet, and particularly relates to the technical field of fire fighting devices, the installation structure comprises a fixing plate and a fire hydrant cabinet body, the fire hydrant cabinet body is fixedly installed at the top end of the fixing plate, a connecting seat is fixedly installed at the back end of the fire hydrant cabinet body, and a pushing assembly is fixedly installed in the middle of the top end of the connecting seat. A suction cup assembly is arranged on the pushing assembly in a sliding mode. According to the installation structure of the fire hydrant cabinet, the fire hydrant cabinet body can be adsorbed to the outer surface of a building through negative pressure by arranging the suction cup assembly, damage to the building in the installation process of the fire hydrant cabinet body is avoided, the structural integrity of the building is protected, the follow-up maintenance process is simplified, and the installation efficiency is improved. The fire hydrant cabinet body can be adhered to the outer surface of a building by arranging the gluing assembly, so that the stability of the fire hydrant cabinet body is enhanced, and a solid foundation is laid for subsequent long-term use and replacement work.

The invention discloses a method for judging the foaming effect of a foaming agent on a gypsum plaster board, which comprises the following steps of: calibrating a cross section image of a core material of the gypsum plaster board and an actual size, extracting a foam hole outline in the image, and obtaining the pore diameter of a foam hole through the foam hole outline; the method comprises the following steps of: acquiring a cell aperture, acquiring a maximum value of the cell aperture, an average value of the cell aperture and a standard deviation of the cell aperture based on the cell aperture, calculating cell area, calculating cell porosity according to the cell area and a solid base area in an image so as to screen out overlarge cells and effective cells, and further solving an overlarge cell ratio and an effective cell ratio; calculating the circularity of the cells according to the cell contours to obtain round cells and communicated cells, and further obtaining the rate of the round cells and the rate of the communicated cells; and comparing the maximum value of the cell diameter, the average value of the cell diameter, the standard deviation of the cell diameter, the cell porosity, the oversize cell ratio, the effective cell ratio, the round cell ratio and the communicated cell ratio with set standard parameters respectively, and receiving parameters in a standard range.

The automatic chute device comprises a material storage box body which is used for temporarily storing concrete and provided with an opening in the upper end, and the section of the bottom of the material storage box body is in a big-end-up triangle or trapezoid shape; a homogenizing mechanism used for flattening concrete is installed at the bottom of the storage box body in the length direction of the storage box body, a plurality of feeding openings used for conveying the concrete to a groove body of the diaphragm wall are formed in the bottom of the storage box body at intervals, and any feeding opening is provided with an adjusting mechanism used for controlling the opening and closing degree of the feeding opening. And concrete is continuously stirred and spread through the homogenizing mechanism in the automatic chute device, so that aggregate accumulation and segregation are effectively prevented. And in combination with a feeding port adjusting mechanism based on feedback of a flow sensor, accurate and independent control over the concrete supply flow of a plurality of feeding ports can be achieved, it is ensured that concrete is supplied to all point positions in the slotted hole in a balanced mode, and a solid foundation is laid for synchronous rising of the liquid level.

The utility model discloses a fragmentation treatment system for dried soil in a river channel, which comprises a fragmentation device, the fragmentation device comprises an outer cylinder and an inner cylinder, the outer cylinder is fixedly mounted, the top of the outer cylinder is provided with a feeding port, a feeding machine is mounted on the side of the fragmentation device, the output end of the feeding machine extends to the upper part of the feeding port, a solid seat is fixedly mounted in the outer cylinder, and the solid seat is fixedly mounted on the inner side of the outer cylinder. The inner cylinder body is installed in the outer cylinder body, the solid base and the inner cylinder body are installed in an up-down corresponding mode, a fragmentation channel is formed between the solid base and the inner cylinder body, the feeding port is communicated with the fragmentation channel, an outlet of the fragmentation channel is formed in the outer wall of the outer cylinder body, and a crushed soil recycling device is installed on the periphery of the outer cylinder body. The blocky riverway dried soil can be effectively ground and output in the crushing device, the output crushed soil is automatically recycled through the crushed soil recycling device, and the device can meet the requirements of enterprises for efficient and automatic production.

The application provides a deep shaft full-face tunneling machine upper slag discharging system, which comprises a first bucket elevator slag discharging unit, an underground loading unit, a second elevator slag discharging unit, an upper unloading unit and a control unit. The first bucket elevator slag discharging unit comprises a tunneling machine and a bucket elevator; the bucket elevator discharges rock slag to the underground loading unit. The underground loading unit comprises a buffer bin and a quantitative bin; the buffer bin receives rock slag, and the quantitative bin loads the rock slag to the second elevator slag discharging unit. The second elevator slag discharging unit comprises a skip and an elevator; the skip receives rock slag, and the elevator is lifted to the well mouth. The upper unloading unit comprises an external power opening and closing device and the like; the rock slag is unloaded to a pit through the external power opening and closing device and an unloading chute, and is loaded into a vehicle through a loader. The application also provides a method for discharging rock slag upward in a shaft by using the system. The application adopts a two-stage lifting full-automatic continuous slag discharging mode, can realize efficient continuous operation, and lays a solid foundation for intelligent and efficient well construction.

The invention provides a feeding device for asphalt production, and belongs to the technical field of asphalt production, the feeding device comprises a body, a side shell is arranged on one side of the body, a hopper and a spiral conveyor are assembled in the side shell, a material dispersing assembly for dispersing materials is arranged in the hopper, an upper shell is arranged above the side shell, and the spiral conveyor is arranged above the upper shell. A sliding rail is arranged on the inner side of the upper shell, and a lifting assembly used for driving the sliding rail to move up and down in the vertical direction is arranged on the upper shell. A mounting frame is slidably assembled on the sliding rail, and a displacement assembly is further arranged on the sliding rail and used for driving the mounting frame to move in the axis direction of the sliding rail. On one hand, the convenience and labor-saving performance of operation are improved, the manual operation intensity is reduced, and the occupational health of operators is guaranteed; on the other hand, a solid foundation is laid for subsequent production procedures, it is ensured that the material feeding link is continuously and orderly carried out, and production interruption is avoided.

The utility model discloses a light SPC floor, which comprises a floor body, the floor body comprises a wear-resistant layer, a color film layer, an upper functional layer, a base layer and a lower functional layer, the wear-resistant layer is arranged above the color film layer, the color film layer is arranged above the upper functional layer, the upper functional layer is arranged above the base layer, and the lower functional layer is arranged above the base layer. The base layer is arranged above the lower functional layer, the base layer is a micro-foaming base layer, the upper functional layer comprises a flame-retardant layer and a waterproof layer, the flame-retardant layer is arranged above the waterproof layer, the lower functional layer comprises a damp-proof layer, a mute layer and a balance layer, the damp-proof layer is arranged above the mute layer, and the balance layer is arranged above the damp-proof layer. And the mute layer is arranged above the balance layer. The SPC floor has the advantages that the light weight of the SPC floor is realized, and the practicability is improved, so that the problems that the overall weight of the traditional SPC floor is too large, the transportation and installation cost is increased, and a floor with a solid base layer also has certain defects in the aspects of sound absorption and heat preservation are solved.

A method of fabricating parts, comprising: identifying a location of a defect in a piece of solid base material; generating a cut path through the piece of solid base material as a function of the location of the defect, the cut path, when executed, creating the parts from the piece of solid base material, the function including locating the cut path through the piece of solid base material such that all the parts, once cut out of the piece of solid base material, exclude the defect; and fabricating the parts from the piece of solid base material by executing the cut path, the executing including cutting the piece of solid base material along the cut path.

This utility model discloses a solid foundation prestressed segmented concrete tower structure, belonging to the field of concrete tower technology, and solves the problem of limited construction space in the cavity of existing concrete tower foundations. It includes a foundation base plate, lower pipe sections, upper pipe sections, and a top pipe section installed from bottom to top. The foundation base plate is a solid structure. There are multiple upper pipe sections. The foundation base plate and lower pipe sections are connected and reinforced by a lower prestressed system. The lower, upper, and top pipe sections are connected and reinforced by an upper prestressed system. The lower and upper prestressed systems are radially staggered along the concrete tower, and the lower prestressed system is embedded within the foundation base plate and lower pipe sections. This concrete tower structure effectively reduces the thickness of the foundation base plate and the area of ​​the foundation, and significantly reduces the amount of concrete and steel reinforcement used.

The invention discloses a method and a system for optimizing elastic deformation parameters of a plate and strip rolling mill roll system. In the method, operation parameters of the plate and strip rolling mill are adjusted step by step, actual roll system deformation data corresponding to the operation parameters detected by a position sensor after the operation parameters are adjusted and changed are obtained, and the operation parameters comprise working roll bending force, middle roll bending force and middle roll stringing amount; according to the adjusted operation parameters, roll system deformation data are obtained and calculated through a roll system elastic deformation calculation model; and according to the actual roll system deformation data and the calculated roll system deformation data, performing reverse optimization on a plurality of roll elasticity modulus parameters used in the roll system elastic deformation calculation model by adopting a least square method. According to the method, on-site indirect testing and model calculation are combined, precise optimization of the elastic modulus of the core and the surface of the roller is achieved, the precision of theoretical calculation of elastic deformation of a roller system is effectively improved, and a solid foundation is laid for precise control of the plate shape.

The utility model provides an automatic shell making line, and relates to the technical field of casting automation. Four sets of supports are installed on the rail base through bolts, hinge arms are hinged to the four sets of supports, moving wheels are installed at the lower ends of the hinge arms through bolts, connecting plates are hinged to the upper ends of the supports, middle rods are connected between the connecting plates and the hinge arms through pin shafts, and buffers are installed between the connecting plates and the supports. According to the shell mold fixing device, the shell mold can be transversely and longitudinally fixed, the fixing stability is extremely high, displacement or shaking of the shell mold caused by infirm fixing in the follow-up machining process is effectively prevented, the problem of dimensional deviation caused by instable fixing can be powerfully solved, and the precision requirement of shell mold production is guaranteed; and meanwhile, the quality defects such as surface flaws possibly caused by shaking, collision and the like are avoided, the quality level of shell mold products is greatly improved, and a solid foundation is laid for high-quality completion of the whole precision casting process.

The utility model relates to the related technical field of cutting devices, in particular to an automobile water cutting sealing strip section cutting device which comprises a working cabinet, a working table is connected to the upper portion of the working cabinet, a controller is connected to one end of the upper portion of the working table, and a lifting cutting device is arranged on one side of the upper portion of the working table. A positioning feeding device is further arranged above the workbench. According to the section cutting device for the automobile water cutting sealing strip, through the arrangement of the positioning and feeding device, accurate control over the whole process from positioning to feeding of the automobile water cutting sealing strip is achieved, a solid foundation is laid for high-quality cutting, the servo motor, the screw and the sliding block are combined, the thread transmission characteristic is utilized, and the service life of the automobile water cutting sealing strip is prolonged. According to the sealing strip positioning table, the distance between the clamping blocks can be rapidly and accurately adjusted according to the size of a sealing strip, sealing strips of different specifications can be accurately located in the center of the positioning table through the automatic centering function, compared with traditional manual adjustment, the positioning efficiency and precision are greatly improved, and positioning errors caused by manual operation are avoided.

The invention relates to the technical field of tunneling machine construction, in particular to a hydraulic drive mechanical arm control method of a disc type rock tunneling machine and the disc type rock tunneling machine. The hydraulic drive mechanical arm control method of the disc type rock tunneling machine comprises the steps that the set target pose of a cutting cutterhead and operation point positions on a working face are determined; the set target pose comprises a set cut-in depth and a set cut-in angle; the control module controls the hydraulic drive mechanical arm module to drive the cutting cutterhead to conduct tunneling operation at the operation point position of the working face in the set target posture. According to the method, the parallel three-oil-cylinder assembly is decoupled, a solving algorithm of the oil cylinder stroke and the cutting cutterhead pose is constructed, the decoupling algorithm is efficient in calculation, and a solid foundation is laid for achieving high-real-time and low-delay tail end pose control; the control module can control the hydraulic mechanical arm to drive the cutting cutterhead to rotate, so that the cutting cutterhead carries out cutting operation according to the set target posture, high-precision control is achieved, and the operation precision of the cutting cutterhead is effectively improved.

The invention discloses a preparation method of a base material special for a cold-rolled oriented silicon steel ultra-thin strip, and relates to the technical field of cold-rolled oriented silicon steel preparation. According to the preparation method of the base metal special for the cold-rolled oriented silicon steel ultra-thin strip, the problems that a traditional base metal is poor in surface quality and insufficient in grain uniformity are successfully solved through component optimization and process cooperative regulation and control; the surface of the prepared special base material is free of glass film bottom layers and oxide residues, high in smoothness and free of strong acid pickling, environmental pollution is avoided, and a clean substrate is provided for subsequent processing; the secondary recrystallization grain size uniformity is excellent, the orientation degree is high, the proportion of small grains is effectively reduced, and a solid foundation is laid for the stability of the magnetic performance of the ultra-thin strip. Meanwhile, the base metal is high in adaptability, the machining control is simple and the machining stability is good when the cold-rolled oriented silicon steel ultra-thin strip is subsequently prepared, and the fault risk in the production process is effectively reduced; and finally, the ultra-thin strip product is outstanding in magnetic performance advantage, lower in iron loss and higher in magnetic density.

The invention discloses an integrated construction method for a roof handrail and an embedded part of an aluminum plate cornice, which adopts an integrated design and is reliable in structure: a double-plate four-rib prefabricated embedded part unit is innovatively adopted, one embedded part provides a support for the handrail and an aluminum plate at the same time, the structural integrity is strong, the stress performance is superior to that of a traditional separated embedded part, and the construction cost is low. A firmer base is provided for the impact resistance test of the handrail, the irreversible construction sequence of welding the handrail first and then installing the aluminum plate is defined, a spacious and safe operation space is provided for handrail welding, damage of welding to the finished aluminum plate is thoroughly avoided, the welding quality and construction safety are ensured, and the problems that the handrail and the cornice are provided with respective embedded parts respectively, and the working efficiency is low are solved. The technical problems that the number of embedded parts is large, positioning is complex, conflicts are prone to occurring, and the influence on the integrity of a concrete structure is large are solved.

The invention discloses an intelligent scarifying, leveling and compacting integrated device for a movable bed river model, which comprises a horizontally arranged bottom frame, the left and right sides of the lower part of the bottom frame are respectively provided with a crawler walking mechanism, the bottom frame is sequentially provided with a hydraulic pump station, a control cabinet and a battery pack from front to back, and the control cabinet is internally provided with a remote control signal receiver. The front part of the underframe is provided with a scarifying and leveling mechanism, and the rear part of the underframe is provided with a compacting mechanism. The crawler walking mechanism carries the scarifying, leveling and compacting integrated equipment, so that automatic operation of scarifying, leveling and compacting of model sand can be realized; all the parts are controlled to work cooperatively in a remote control mode, the device has the advantages of being high in automation degree and high in construction efficiency, especially after scarifying, leveling and compacting, the compactness of model sand in all the areas can be kept consistent, and a solid foundation is laid for follow-up moving bed river model terrain manufacturing precision.

The utility model discloses a high-wear-resistance metal casting with multidirectional stress dispersion pore channels, and relates to the technical field of metal castings. The wear-resistant metal casting comprises a metal casting body, the metal casting body comprises a casting body, and the surface of the casting body is coated with a wear-resistant layer. The wear resistance of the metal casting is remarkably improved by constructing the multiple composite wear-resistant layers on the surface of the casting body, the surface of the casting body is treated by a carbonitriding process to obtain a hardened metal layer, the hardness and wear resistance of the surface of a base body are effectively improved, a solid foundation is laid for a whole wear-resistant layer system, and the service life of the metal casting is prolonged. The tungsten carbide alloy wear-resistant alloy layer welded on the casting can resist high-frequency friction and fretting wear by means of extremely high hardness and wear resistance, the sprayed silicon carbide ceramic wear-resistant coating further enhances the hardness of the surface and endows the casting with good high-temperature resistance and corrosion resistance, and the Teflon coating on the outermost layer can resist high-temperature resistance and corrosion resistance of the casting. A surface having a low coefficient of friction may be formed.

The utility model relates to the technical field of welding tools, in particular to a quick welding tool for hot melting welding, which comprises a welding table, a clamping mechanism is fixedly mounted in the middle of the lower end of the welding table, a dust collection mechanism is arranged on the right side of the welding table, and a base plate is fixedly connected to the middle of the upper end of the welding table. First sliding grooves are formed in the left lower portion of the front end and the right lower portion of the rear end of the welding table correspondingly, second sliding grooves are formed in the right upper portion of the front end and the left upper portion of the rear end of the welding table correspondingly, vertical plates are fixedly connected to the left portion and the right portion of the lower end of the welding table correspondingly, and foot pads are fixedly connected to the lower ends of the two vertical plates correspondingly. According to the rapid welding tool for hot melting welding, interference of thermal stress and external pressure in the welding process can be resisted, the possibility of sheet displacement is reduced, and a solid foundation is laid for high-quality welding, so that potential quality hazards such as pseudo soldering and unsoldering are reduced, and the welding quality and operation safety of a plate heat exchanger are guaranteed.

This invention provides an attached lifting scaffold fixing device, the structure of which includes: a fixing body, a connecting block, an attachment platform, a vertical column, and a locking ring. The fixing body is embedded in the lower end of the connecting block, and the top of the connecting block is welded to the lower layer of the attachment platform. The vertical column is installed on the surface of the attachment platform. This invention further improves upon the attachment platform by dividing the original solid platform into a parallel plate and a solid base plate. Through battery control with a built-in driver, the movable rod of the bidirectional rotating shaft can directly drive the turbine box to rotate forward and backward. The turbine box controls the lifting screw through its forward and reverse rotation, allowing the lifting screw to extend and retract as it rotates, thus quickly adjusting the overall height of the scaffold within the vertical column. This avoids the need for disassembly and reconnection of the fixing device when the overall height of the scaffold is insufficient, thereby improving the strength of the fixing device.

The application discloses a method for evaluating a compact carbonate rock after acidification and fracturing, and comprises the following steps: step one, establishing a multi-factor interaction correlation model of gas, liquid and solid base and three phases of the compact carbonate rock reservoir; step two, generating an overall simulation mechanism; and step three, autonomous intelligent simulation. After the acidification and fracturing test evaluation experiment of the compact carbonate rock reservoir, the acidification and fracturing reconstruction effect is effectively evaluated, the reliability and pertinence of the acidification and fracturing design are stronger and stronger, better test evaluation application effects are achieved, the acidification and fracturing reconstruction conditions and reconstruction degrees of the compact carbonate rock reservoir are reflected, and the method has high practicability.