259results about How to "Easy to adjust control" patented technology

The invention relates to the technical field of automobile intelligent control, in particular to an air conditioner intelligent control method and system based on passenger comfort. Acquiring the distribution condition of passengers in the vehicle, and collecting passenger body temperature information and passenger feature information; passenger comfort temperature is obtained based on the passenger feature information; comparing the body temperature of the passenger with the comfortable temperature of the passenger; and the vehicle-mounted air conditioner is controlled according to the comparison result until the body temperature of the passenger conforms to the comfort temperature of the passenger. The air conditioner control method is simple and efficient, the sensitivity and the demand degree of human bodies of different passengers to the temperature can be accurately recognized, and the temperature of each passenger can be adjusted according to the riding positions of the different passengers so as to meet the comfort requirement of the passengers; and the energy consumption of the air conditioning system can be reasonably controlled according to different passenger requirements and the number of passengers, unnecessary energy consumption is reduced, the endurance mileage of the whole vehicle is increased, and the experience feeling of the passengers is improved.

The invention relates to the technical field of silo grain storage engineering, and particularly discloses a construction process of a conical silo top of a large-diameter squat silo, which comprises the following steps: step 1, lifting a steel truss to a height not lower than the mounting position of a bracket, and then fixedly mounting the bracket on an embedded threaded pipe on a silo wall; secondly, a supporting plate of the bracket is fixedly connected with a stress plate fixed to the radiation beam through a bolt; wherein a plurality of mounting holes are formed in the supporting plate of the bracket, a plurality of matching holes are formed in the stress plate, fixed connection is achieved by inserting bolts into the mounting holes and the matching holes, and the mounting holes and / or the lap joint holes are adjusting holes. And thirdly, formworks are installed on the steel trusses, steel bars are bundled, then the silo top is poured, and during pouring, according to the principle of first bottom and then top, the lower ring beam connected with the silo wall is poured firstly, then the conical shell is poured, and finally the center of the silo top is poured. The scheme is used for solving the problems that disassembly is time-consuming and secondary utilization is affected due to welding of the steel truss and the bracket at present.

The invention relates to the field of electrical equipment, and discloses a disinfectant fluid preparation method and device, disinfection equipment and a computer readable storage medium. According to the invention, closed-loop control is carried out on the power of the discharge mechanism on the basis of the conductivity detection result, the problem that the disinfection effect is affected due to the fact that the plasma concentration of the disinfectant fluid is easy to deviate can be solved, and the prepared disinfectant fluid has good disinfection and sterilization effects. The disinfectant fluid preparation method is applied to the disinfectant fluid preparation device, the disinfectant fluid preparation device comprises a water storage structure and a discharging mechanism, and the discharging mechanism is arranged in the water storage structure and used for discharging and preparing water in the water storage structure into disinfectant fluid; the disinfectant fluid preparation method comprises the following steps: starting the discharge mechanism; acquiring a first conductivity actual change value delta S of the liquid in the water storage structure; acquiring a first conductivity preset change value delta S0; and adjusting the power of the discharge mechanism according to the actual change value delta S of the first conductivity and the preset change value delta S0 of the first conductivity.

The invention discloses a lock pin welding device and a working method thereof.The lock pin welding device is used for welding a lock pin and a lock pin handle and comprises a workbench, a driving table, a clamping rod, a manual clamp and a welding gun assembly, the driving table, the clamping rod, the manual clamp and the welding gun assembly are arranged on the workbench, and the driving table is arranged at one end of a top plate of the workbench; a horizontal output shaft of the driving table is fixedly connected with a three-jaw chuck; the root of the clamping rod is clamped on the three-jaw chuck, and the lock pin is coaxially clamped at the cantilever end of the clamping rod and is pressed through the manual clamp; the lock pin handle is preassembled at the end of the lock pin shaft, and the two welding gun assemblies are arranged on the two sides of the lock pin handle correspondingly and machine an inner circumferential welding seam and an outer circumferential welding seam correspondingly. Two circumferential welds of the lock pin of the locker can be welded at the same time, and the welding efficiency and quality are improved.

The utility model discloses a storage device for bread production, which belongs to the technical field of bread production and comprises a bottom frame, a magnetic block is arranged in the bottom frame, a mounting component is arranged on the surface of the bottom frame, a storage box is fixedly connected to the top of the bottom frame, and a storage frame is slidably connected to the inside of the storage box. The storage device for bread production has the beneficial effects that the storage device for bread production is provided with the magnetic blocks and the mounting assembly, multiple groups of structures can be conveniently positioned and spliced, the space utilization effect is improved while the stability of the structures is guaranteed, the bread body can be conveniently disassembled by arranging the storage frame, the storage device is convenient to use, and the practicability is high. By arranging the universal wheels, the position of the structure can be conveniently adjusted and controlled, the bread body can be conveniently operated, by arranging the supporting assembly, the structure can be limited and supported, and the stability and safety of the structure during storage and placement are guaranteed.

The utility model discloses an internally adjustable hanging wheel, which comprises a plurality of groups of hanging wheels arranged on a frame, the plurality of groups of hanging wheels are symmetrically arranged on two sides of the frame, the lower end of the frame is provided with a supporting seat used for assisting the frame in supporting, the supporting seat is connected with the top of a sliding door through a mounting bolt, and the sliding door is connected with the supporting seat through the mounting bolt. The hanging wheel is composed of an annular rolling wheel and a ferrule, and the annular rolling wheel is rotationally connected to the outer side of the ferrule. According to the internally adjustable hanging wheel, when the hanging wheel is used, the lifting assembly and the transmission assembly are matched with each other, the use height of the hanging wheel on the frame is adjusted, in the whole adjusting process, adjusting parts are arranged on the frame, internal adjustment is achieved, the hanging wheel can be conveniently adjusted and controlled in a narrow space, and the use safety of the hanging wheel is improved. And in the process of adjusting the hanging wheel, a driving part is mainly formed by matching a threaded push pin with an inclined surface, so that the requirement on transmission precision is relatively low, the hanging wheel is not easy to block, and the hanging wheel is convenient to adjust and use.

The utility model discloses an aluminum cover measuring device convenient for positioning, which comprises a bottom frame and a rotating disc, the rotating disc is movably arranged at the center of the top of the bottom frame, left support frames are symmetrically arranged at the top end of the bottom frame on one side of the rotating disc, and sliding arms are arranged at the tops of the left support frames. A connecting frame is mounted on the outer wall of the side, close to the rotating disc, of the sliding arm, a left air cylinder is arranged at the top end of the connecting frame, a right supporting frame is mounted at the top end of the bottom frame on the other side of the rotating disc, and a right air cylinder is mounted at the top of the right supporting frame. According to the utility model, the aluminum caps can be conveniently and continuously conveyed for rotary measurement, conveying and collection, the movement control adjustment can be conveniently and rapidly carried out, the time for switching between the aluminum caps during measurement is shortened, the aluminum caps can be conveniently and better picked and conveyed, and the efficiency of large-batch measurement of the aluminum caps is improved; and the convenience of collecting the measured aluminum caps is improved.

The invention relates to a positive photosensitive polyimide composition with high elongation at break and application of the positive photosensitive polyimide composition. The photosensitive polyimide composition comprises polyamide acid resin, diazonaphthoquinone sulfonate, a thermal crosslinking agent, a surfactant, a flexibility aid and a solvent. According to the positive photosensitive polyimide composition disclosed by the invention, on one hand, the flexibility auxiliary agent can be used for remarkably improving the elongation at break of a photosensitive polyimide film on the premise of not influencing the tensile strength of the photosensitive polyimide film and improving the mechanical properties of flexibility and bending resistance of the photosensitive polyimide film; on the other hand, the uniformity that a solvent volatilizes and escapes from the interior of a film after the photosensitive polyimide composition is glued is improved, and the flatness of the cured photosensitive polyimide is improved; in addition, a certain effect of reducing the curing temperature of the photosensitive polyimide is achieved.

The invention discloses a self-adaptive content security AI retrieval control system and method, and relates to the technical field of content security, and the method specifically comprises the following steps: step 1, collecting unsafe web text contents, and establishing an AI retrieval comparison database; 2, determining a word structure belonging to the content abnormal text of the to-be-retrieved data, and evaluating the content security of the to-be-retrieved data; 3, analyzing the text content of which the content security is influenced, and determining the correlation degree between the text content and different types of abnormal word structures; according to the method, whether the to-be-processed text content is affected by the content abnormal text or not is judged through comparison, the text content with the content safety affected and needing to be controlled is rapidly and accurately screened out, the content safety of the to-be-processed text content is improved, and the content safety of the to-be-processed text content is improved. And the text quality and the text content security can be improved.

The present invention relates to the field of photocatalyst detection technology, and specifically to a photocatalyst degradation performance detection system and method, the system comprising a detection unit, the detection unit being provided with an inlet and an outlet, the outlet and the inlet of the detection unit being provided with a pollutant concentration detection module, the pollutant concentration detection module being used to detect the concentration of pollutants passing through; and also comprising a processing module, the processing module being used to obtain and record pollutant concentration data detected by the pollutant concentration detection module, control the operation of an ultraviolet light source component, a driving component and a temperature control component, and calculate the pollutant degradation performance of the photocatalyst under multiple groups of different lighting conditions and different detection environment temperature conditions. The present invention can synchronously obtain the pollutant degradation performance results of multiple groups of photocatalysts under different lighting conditions and different detection environment temperature conditions. The convenience of photocatalyst degradation performance detection and the efficiency of photocatalyst degradation performance detection are improved.

The invention discloses an unmanned electric mine card based on all-weather environment monitoring, and relates to the technical field of mine card equipment. The sensing equipment is mounted in the advancing direction of the vehicle body; the hopper assembly is hinged to the vehicle body; one end of the discharging cylinder body is hinged to the vehicle body, and the other end of the discharging cylinder body is hinged to the hopper assembly; wherein the sensing device at least comprises a camera, a laser radar and a receiver, the hopper assembly comprises a hopper, a shielding assembly and a separation assembly, the shielding assembly is installed at the end, close to the sensing device, of the hopper, the separation assembly is installed in the hopper, and when the hopper is in a charging state, the bottom of the hopper is in an inclined state; mineral products can be prevented from slipping off during loading through the inclined hopper, the mineral products in the hopper can be shielded and separated through the shielding assembly and the separating assembly, and the working effect is improved.

The invention discloses a stomatoscope for stomatology, and particularly relates to the technical field of stomatology, the stomatoscope comprises a handheld rod and a stomatoscope body, one side of the handheld rod is fixedly provided with an L-shaped rod, one end of the L-shaped rod is fixedly provided with a connecting rod, and the outer wall of the stomatoscope body is rotatably provided with a connecting shaft; one end of the connecting shaft is fixedly connected with the outer wall of the connecting rod, a moving assembly is movably installed in the handheld rod, an adjusting column is fixedly installed at the top of the moving assembly, and a telescopic rod is arranged in the mouth mirror body. According to the scheme, the problem that angle adjustment of an existing mouth mirror is difficult to control is solved, the mouth mirror can rotate independently, rotation adjustment of the whole device is not needed, the situation that a patient needs to open the mouth as much as possible is avoided, examination pain of the patient is relieved, rotation of the mouth mirror is slow and controllable, and the mouth mirror can be fixed when rotated to any angle; the situation that the angle needs to be fixed through fingers all the time is avoided, and detection problems caused by hand shaking are also avoided.

The invention provides an intelligent electrochemical water treatment reactor based on a boron-doped diamond electrode. The reactor comprises at least one water treatment module, a front end cover and a rear end cover, the front end cover is detachably connected with the water treatment module adjacent to the front end cover, the rear end cover is detachably connected with the water treatment module adjacent to the rear end cover, and every two adjacent water treatment modules are detachably connected, and parallel and sealed water treatment channels are formed in all the water treatment modules; each water treatment module comprises an electrode assembly, each electrode assembly is connected with an electrode plug connector, and the electrode plug connectors between two adjacent water treatment modules are mutually plugged and enable the electrode assemblies of the two adjacent water treatment modules to be electrically connected in series; a driving circuit board is packaged in the front end cover, and is electrically connected with the electrode plug connectors of all the water treatment modules, so as to adjust the current and voltage of all the water treatment modules based on a control instruction, monitor the current and voltage operation states and operation data of all the water treatment modules, and feed back the current and voltage operation states and operation data to the system.

The utility model discloses an examination couch with a leg fixing structure, which belongs to the technical field of medical equipment and comprises a couch body, a support frame is fixedly connected to the bottom of the couch body, a rotating shaft is sleeved in the support frame through a bearing, one end of the rotating shaft is fixedly connected with a threaded rod, and the other end of the rotating shaft is fixedly connected with a connecting rod. The examination couch with the leg fixing structure has the advantages that the driving assembly works to drive the threaded rod to rotate, so that a threaded sleeve, a first adjusting frame, a second adjusting frame, a first electric push rod, an adjusting plate and a limiting assembly are driven to move, and the leg fixing structure can be used for fixing the leg. The position of the limiting assembly can be conveniently adjusted, the structure can be flexibly controlled according to the position of the legs of a patient inconvenient to move, the adjusting plate and the limiting assembly can be driven to ascend and descend through work of the first electric push rod, the limited legs of the patient can be conveniently lifted and adjusted, and the comfort of the patient can be guaranteed.

The present invention discloses a segment positioning device and positioning method of a cable-stayed bridge steel main tower, comprising a supporting steel plate welded and fixed on the wall plate of the steel main tower; a main steel plate supported on the supporting steel plate; the main steel plates are four in number, and the four main steel plates are arranged around the steel main tower; a horizontal jack group and a vertical jack group are installed on the main steel plate; the steel main towers of two adjacent segments adjust their horizontal relative positions through the horizontal jack group; the steel main towers of two adjacent segments adjust their vertical relative positions through the vertical jack group. The positioning device of the present invention can be reused, easy to install, easy to disassemble, more stable, accurate in positioning, and fast in positioning; the device has strong flexibility and adaptability, and good applicability; each component of the positioning device of the present invention is made of the same steel material as the steel main tower itself, and is easy to install and disassemble, and easy to modify.

The utility model discloses a scaffold structure for engineering construction, and relates to the field of scaffolds, the scaffold structure comprises four main rods and connecting frames sleeved on the outer sides of the main rods, one side between the connecting frames is clamped and connected with a cross rod, two ends of the cross rod are provided with inclined rods through fasteners, two sides of the main rods are provided with crawling ladders through fasteners, and the crawling ladders are connected with the cross rod through fasteners. Protection rods are mounted on one sides of the main rods on the outer sides of the crawling ladders, and transverse plates are fixedly connected to the top ends between the transverse rods. According to the scaffold structure for engineering construction, the protective fences can be installed on the two sides of the two ends of the transverse plate correspondingly through the fasteners, the distance between the two protective fences can be adjusted through the extension rods, and therefore the protective fences and the extension rods can adapt to the transverse plates of different sizes and can also better adapt to scaffolds of different sizes; and the climbing ladder can climb to different positions of the main rod according to construction requirements, protection can be conducted when the climbing ladder is climbed through the protection rod, and the safety during climbing is improved.

The present invention relates to a separation device and method for spherical particles and broken particles, wherein the separation device comprises a storage funnel, a direction-changing acceleration tube, an inclined separation plate, a horizontal buffer plate and a collection tank, and the angle between the inclined separation plate and the horizontal buffer plate is adjusted by an electric push rod, so that the spherical particles in the ion exchange resin can roll down along the inclined separation plate and the horizontal buffer plate and finally enter the collection tank, while the broken particles cannot roll down from the inclined separation plate, and the spherical particles are separated from the broken particles after so many cycles of separation. After the experiment is over, the broken resin is scraped from the inclined separation plate to the horizontal buffer plate by a scraper, and finally taken out in a centralized manner through the collection tank. The present invention can greatly save the time and manpower investment for separating spherical particles from broken particles, has a good separation effect, and has simple equipment, low cost and high practicality, and provides a new operating device and experimental method for the determination of the spherical rate of ion exchange resin in the laboratory.

The utility model relates to the technical field of semiconductor processing equipment, in particular to a multi-chamber gas isolation device, which comprises a mounting plate, a gas guide pipe, a gas isolation mechanism and a connecting block, the gas isolation mechanism is connected onto the mounting plate through the connecting block, one end of the gas guide pipe is connected with a gas inlet of the gas isolation mechanism, and the other end of the gas guide pipe is connected with a gas outlet of the gas isolation mechanism. The other end of the gas-guide tube is connected with a gas source. Due to the arrangement of the gas isolation mechanism, the gas isolation devices on the two sides of the cathode cavities form one path of gas, the gas adjustment of the cathode cavities is more controllable, and the gas between the two cathode cavities can be effectively isolated; the problem of gas blow-by is solved, the process environment is optimized, the equipment can cope with various composite film layers, and the applicability is improved.

The invention discloses a portable gas relay heavy gas inspection method. The method solves the problems of slow heavy gas inspection of on-site gas relays, large size of inspection equipment, and cumbersome operation. The invention comprises an oil tank, a gas relay and a control panel. The middle part of the oil tank is connected to a reversing valve through a pipeline, the left side of the oil tank is connected to a liquid pump through a pipeline, the liquid pump is connected to the left side of an oil cylinder through a first oil pipe, a one-way valve is arranged near the first oil pipe near the liquid pump, a proportional valve is arranged on the upper side of the one-way valve, and an overflow valve is arranged on the upper side of the first oil pipe. The invention is simple to operate, can quickly and automatically complete the heavy gas inspection, the equipment is small in size and light in weight, and the inspection cost is reduced. At the same time, the invention is suitable for popularization and promotion, and data can be conveniently displayed through the display screen, and control and adjustment can be conveniently performed through the operation panel.

The invention belongs to the field of medical instruments, and discloses an airway trachea cannula device which comprises a mask used for being worn on the face of a patient, at least one elastic bandage is fixed to the mask, and the two ends of the elastic bandage are fixed to the mask; a first round through hole horizontally facing the oral cavity of the patient is formed in the mask, the side, close to the face of the patient, of the mask in the axis direction of the first round through hole is arranged as the mask inner side, and the side, away from the face of the patient, of the mask is arranged as the mask outer side; the airway tracheal intubation device further comprises a lining tube coaxially arranged with the first round through hole, the lining tube is made of hard materials, the two ends of the lining tube are open, and one end of the lining tube penetrates through the first round through hole and extends to the inner side of the mask. The peripheral wall of the outer side of the lining pipe is sleeved with a hose with two open ends, and the end, located on the inner side of the mask, of the lining pipe is located in the hose; the problem that in the prior art, when a hose is inserted into the throat of a patient, the bent portion of the hose is difficult to control, and intubation is difficult is solved.

The utility model relates to a movable kiln top cover and a communication system. The movable kiln top cover comprises a top cover body, the sealing ring is arranged right above the kiln body and is suitable for abutting against the top of the kiln body so as to seal the kiln body; the upper cover is suitable for being connected with the top cover body; a plurality of supporting pieces are arranged on the side, facing the top cover body, of the upper cover and are suitable for supporting the upper cover and the top cover body on the upper cover. A driving part is arranged between the upper cover and the top cover body and is suitable for moving the top cover body towards the direction close to or away from the kiln body, the top cover body can be moved to any kiln for use, the application range is wider, meanwhile, the kiln bodies which are not used do not need to be independently provided with the top cover body, and the cost is reduced. Therefore, the cost is effectively reduced.

The present invention discloses a novel paint scraper device for paint production, specifically relates to the field of paint production equipment, including a holder, a connecting seat is provided inside the holder, two holders and two connecting seats are provided, a telescopic rod is provided between the two connecting seats, a pre-treatment device is provided at the bottom of the telescopic rod, scraper devices are provided on both sides of the pre-treatment device, and hydraulic lifting rods are provided between the pre-treatment device and the scraper device and the telescopic rod. The present invention is provided with a holder, a telescopic rod and a hydraulic lifting rod, the holder is clamped on both sides of the barrel wall of the paint bucket, and the connecting seat and the telescopic rod are installed, the paint bucket is scraped by the pre-treatment device and the scraper device during the scraping process, and the hydraulic lifting rod repeatedly moves during the scraping process to push the pre-treatment device and the scraper device to move up and down, thereby achieving the scraping work of paint buckets of different depths, and the adjustment and control are simple and convenient.

The utility model discloses a device capable of adjusting the angle of a photovoltaic panel, which relates to the technical field of photovoltaic panels and comprises a bottom plate, an adjusting mechanism is arranged above the bottom plate and comprises a gear ring fixedly connected with the bottom plate, the top end of the gear ring is rotatably connected with a connecting plate, and a first motor and an air cylinder are mounted on the upper surface of the connecting plate. An output rotating shaft of the first motor penetrates through the gear ring and is rotationally connected with the gear ring. Through cooperative arrangement of the bottom plate and the adjusting mechanism, the rotating gear can be used for driving the gear ring to rotate, so that the connecting plate at the top of the gear ring is driven to rotate, a photovoltaic panel is driven to be adjusted by 360 degrees in the horizontal direction, and the height of the photovoltaic panel is adjusted by using the telescopic air cylinder; and then the rotating screw rod drives the sliding block to move, and the sliding block drives the supporting rod to move, so that the photovoltaic panel is driven to rotate, the inclination angle of the photovoltaic panel is adjusted, and the utilization rate of sunlight by the photovoltaic panel is improved.

The utility model relates to the technical field of machining, in particular to a blade meshing size debugging visualization device. According to the technical scheme, the device comprises a tool rest and a top plate, a basic cushion block is arranged in the middle section of the tool rest, a lower tool apron is arranged between the lower portion of the basic cushion block and the tool rest, a lower blade is rotationally arranged on the lower tool apron, an upper tool apron is arranged between the upper portion of the basic cushion block and the tool rest in a lifting mode through a lead screw assembly, and an upper blade is rotationally arranged on the upper tool apron. The top plate is arranged at an opening in the top end of the tool rest, a positioning assembly is arranged on the upper surface of the top plate, and the positioning assembly is used for limiting the rotating state of a screw of the lead screw assembly. According to the utility model, the high-precision visual adjustment of the blade gap is realized through the matching of the structures, and the debugging efficiency and the processing stability are obviously improved.

The utility model provides a wall-mounted automatic scrubbing and washing machine, and belongs to the technical field of scrubbing and washing machines. The device comprises a shell with an inner cavity, a plurality of driving motors, a battery and a circuit board are arranged in the shell, rotating brushes extending out of the front side of the shell are fixed to output shafts of the driving motors, a plurality of adjusting columns are fixed to the back face of the shell, and a back plate with one side fixed to a wall is arranged on the back face of the shell. The back plate is provided with a limiting sliding groove matched with each adjusting column, the limiting sliding groove comprises a straight groove formed in the back plate, the back plate is provided with a plurality of C-shaped grooves located on one side of the straight groove, the C-shaped grooves communicate with the straight groove, a limiting baffle located on one side of the back plate is formed on one side of the back face of the shell, and a limiting gap is formed between the limiting baffle and the back plate. An adjusting pin with two side walls abutting against one side of the limiting baffle and one side of the back plate is inserted into the limiting gap. The scrubbing machine has the advantages of being convenient in height adjustment, stable in use, good in scrubbing effect and the like.

The utility model discloses a glass edging machine with a dedusting structure, which comprises a base and an adjusting table, the top end of the base is provided with the adjusting table, the top end of the base on one side of the adjusting table is provided with an edging frame, the side wall of the edging frame is provided with a driving frame, the outer wall of the driving frame is provided with an edging motor, and the edging motor is connected with the edging frame. A sand disc is installed at the output end of the edge grinding motor, a first telescopic driving piece is installed at the top end of the adjusting table, a lower clamping block is installed at the top end of the first telescopic driving piece, a lower support is installed at the position, on one side of the lower clamping block, of the top end of the first telescopic driving piece, and an upper support is installed at the top end of the lower support. And a second telescopic driving piece is mounted at the top end of the upper bracket above the lower clamping block. According to the glass edge grinding machine, glass can be rapidly clamped and fixed by the glass edge grinding machine, dust can be well absorbed, multi-position control and adjustment are facilitated, and the machining efficiency of the glass edge grinding machine is improved.

The utility model discloses a shoebox marking press, which belongs to the technical field of shoebox production and comprises an operation table, a first rotating shaft is sleeved at the bottom of the inside of the operation table through a bearing A, a driven gear is fixedly connected to the surface of the first rotating shaft, and a first driving component is arranged between the driven gear and the operation table. The top end of the first rotating shaft is fixedly connected with an adjusting plate, the top of the adjusting plate is provided with a clamping assembly, the surface of the operation table is fixedly connected with a supporting frame, and the interior of the supporting frame is sleeved with a second rotating shaft through a bearing B. The shoebox marking press has the beneficial effects that the shoebox marking press can clamp and fix a shoebox by arranging the clamping assembly; the stability of the shoe box during line pressing is guaranteed, a second driving assembly works to drive a first threaded rod to rotate, so that a first threaded sleeve, an adjusting frame, an electric push rod and a line pressing frame are driven to descend, and the position of the line pressing frame can be conveniently adjusted and controlled.

The invention discloses a method for preparing superfine aluminum oxide by indirect oxidation of primary aluminum, which comprises the following steps of: chlorinating the primary aluminum at high temperature by adopting AlCl3, converting aluminum in the primary aluminum into gas-phase AlCl, reacting the gas-phase AlCl with oxygen in a fluidized bed filled with an aluminum oxide bed material to generate aluminum oxide and gas-phase AlCl3, and circularly using the gas-phase AlCl3 for chlorination of the primary aluminum. According to the present invention, the primary aluminum is adopted as the aluminum source, the AlCl3 is adopted as the chlorinating agent, the oxygen is adopted as the oxygen source, and the ultrafine alumina powder is prepared through the chlorination-oxidation, such that the process is easy to adjust and control, the heat generated by the oxidation reaction can be effectively removed, the large-scale sintering of the product is prevented, the production cost is low, and the product is convenient to collect, high in purity and good in quality. Meanwhile, the cyclic utilization rate of system materials is high, large-scale efficient preparation of superfine aluminum oxide can be achieved, and good economic benefits and social benefits are achieved.

The utility model relates to the field of hot working, in particular to a hot working clamping fixture convenient to flexibly move, which comprises a main body, a clamping mechanism is arranged at the upper end of the main body, two mounting frames are mounted at the lower end of the main body, rollers are arranged at the two ends of each mounting frame, and the rollers are rotatably mounted on the mounting frames through connecting pieces. Through the arrangement of the transmission shaft, the connecting piece, the idler wheels, the synchronizing mechanism and the like, when turning is needed in the working process, a worker drives the transmission shaft to rotate, the transmission shaft drives the connecting piece to rotate through the transmission mechanism, the connecting piece drives the idler wheels on one side to steer, and the idler wheels on the other side are driven to rotate through the synchronizing mechanism. And under the action of the synchronizing mechanism, the two rolling wheels of the same mounting frame synchronously steer, so that the steering angles of the rolling wheels can be conveniently adjusted and controlled, the situation that a worker needs to separate a part of force to keep the device stable is avoided, the labor intensity of the worker is reduced, and the flexibility of the device is improved.

The utility model discloses a story pole for building wall masonry, which relates to the technical field of building construction and comprises a base, a connecting ball fixedly connected to the top of the base, a swing rod matched with the connecting ball embedded in the connecting ball, a supporting seat fixedly connected to the swing rod, and a vertical rod fixedly connected to the top surface of the supporting seat. A mounting seat of an L-shaped structure is fixedly connected to the outer side face of the vertical rod, first hinge seats are fixedly connected to the two end faces of the mounting seat correspondingly, second hinge seats are fixedly connected to the positions, corresponding to the two first hinge seats, of the top face of the base correspondingly, and telescopic rods are connected between the first hinge seats and the second hinge seats correspondingly; sliding blocks matched with the sliding grooves are further arranged in the sliding grooves, detachable transverse rods are further arranged on the outer side end faces, extending out of the sliding grooves, of the sliding blocks, and fixing devices for positioning the sliding blocks of the vertical rods are further arranged on the vertical rods. The device is simple in structure and convenient to operate, the stability in the using process can be guaranteed, and therefore the using efficiency of the device is improved.