136results about How to "Reduce direct contact" patented technology

The invention relates to a box girder steel reinforcement framework closed ring forming welding device and method, the device comprises a steel reinforcement butt welding machine, the steel reinforcement butt welding machine comprises a movable clamping seat and a fixed clamping seat, and a butt welding area is arranged between the movable clamping seat and the fixed clamping seat; the positioning mechanism comprises a positioning frame, a driving cylinder, a rack, a side clamping seat, a front clamping seat and a rear clamping seat; a cylinder body of the driving cylinder is fixed on the positioning frame, a driving seat is arranged at the front end of the driving cylinder, racks are fixed on two sides of the driving seat, and the racks are adaptively positioned and slidably sleeved on the positioning frame; the racks on the two sides are meshed with corresponding gears, rotating shafts of the gears on the two sides are in transmission connection with left-hand thread screws extending towards the two sides, side clamping bases are arranged on the upper portions of the two sliding sleeves, and side clamping areas are formed. And the front clamping seat and the rear clamping seat correspond to each other and are respectively positioned on the outer side and the inner side of the butt welding area. A positioning tool is provided for the butt welding forming process of the rectangular steel reinforcement framework, and the consistency and reliability of welding quality are ensured through a positioning system and a clamping system.

This application relates to a sample pretreatment system, comprising: a gripping device for holding the cap of a sampling tube; a capping device for holding the tube body of the sampling tube and for rotating the tube body while the gripping device holds the cap to open or close the cap; a liquid injection device for injecting organic solvent into the tube body held in the capping device and containing the sample to be tested, to obtain a mixture; a mixing device for mixing the mixture in the sampling tube; a centrifugation device for centrifuging the mixed mixture in the sampling tube to obtain a supernatant; a filtration device for filtering the supernatant to obtain a filtrate; a pipette device for drawing at least a portion of the supernatant from the sampling tube into a pipette or injecting the supernatant from the pipette into the filtration device; and a transport device. This application improves processing efficiency and ensures the consistency of pretreatment results.

The utility model discloses an anorectal drug delivery device which comprises a drug delivery tube and an injection tube connected with the drug delivery tube in an inserted mode, one end of the drug delivery tube is a closed end, a plurality of protruding rings are connected to the tube wall of the drug delivery tube at intervals in the length direction, a drug delivery hole is connected to the tube wall between every two adjacent protruding rings, and an isolation sleeve is arranged in the drug delivery tube. One end of the isolation sleeve is connected with the inner wall of the dosing tube through a connecting part, the other end of the isolation sleeve extends towards the closed end, and the dosing holes are formed between the closed end and the connecting part. By arranging the convex rings, when the dosing tube is inserted into the anorectum, the direct contact between the inner wall of the anorectum and the dosing hole can be reduced as much as possible through the convex rings; meanwhile, the isolation sleeve is arranged, so that the medicine flows through the inner wall of the closed end to be buffered, then flows into the gap between the isolation sleeve and the administration tube and then flows out of the administration hole in the administration process, the medicine pushing-out speed can be effectively reduced, stimulation to the anorectum is reduced, and the discomfort of a patient is further reduced.

This invention provides a nitrogen filling needle structure for vials, comprising a filling needle body, a first through hole penetrating its upper and lower end faces, and a filling needle body gas chamber inside the filling needle body; a top connector communicating with the first through hole at the upper end of the filling needle body; a second through hole penetrating its bottom end face at the bottom of the filling needle body, communicating with the filling needle body gas chamber; a first vent hole on the filling needle body, through which high-pressure gas passes sequentially via the top connector, the first through hole, the second through hole, and the first vent hole; a cap is fixedly installed on the bottom end face of the filling needle body at the top, with an opening at the bottom of the cap, and an annular rubber ring is provided on the inner wall of the cap, the annular rubber ring communicating with the interior of the filling needle body. This invention provides a nitrogen filling needle structure for vials, which can effectively prevent contamination of the liquid inside the vial during nitrogen filling, thereby improving the yield of finished products.

The utility model provides a segmented cutting forming tool of tricholoma matsutake. The segmented cutting forming tool of tricholoma matsutake includes: the workbench that sets up the inclined groove, the fixed plate is fixedly installed in the inclined groove, the cutting frame is hinged on the fixed plate, and the bottom rotation of cutting frame is installed with the winding shaft, the protective cover is fixedly installed on the cutting frame and is connected with the winding shaft rotation, the torsional spring is fixedly installed in the protective cover and is connected with the winding shaft, the cutting line one end is coiled on the winding shaft, the movable plate is slidably installed on the cutting frame, and the movable plate is fixedly connected with the other end of cutting line. The segmented cutting forming tool of tricholoma matsutake has the advantages that the efficiency of segmented cutting of tricholoma matsutake can be improved, and the production needs are met.

This utility model discloses a self-lubricating bearing ring for new energy vehicle transmission, including an outer bearing ring. A circulation pipe is snapped into a groove in the outer bearing ring, and the circulation pipe is tightly attached to a first groove, which is formed on a snap-fit ​​block. This utility model utilizes the fact that solid lubricant is typically embedded in the inner bearing ring material. During bearing operation, due to friction and temperature changes, the lubricant in the ring is gradually released to the friction surface. The lubricating film effectively reduces direct metal-to-metal contact, thereby reducing the coefficient of friction and wear rate. The lubricating film can also absorb some heat, helping to control the bearing temperature rise. The three-layer protection of the first, second, and third dustproof rings effectively prevents dust from entering, thus improving the bearing's lubrication efficiency and service life. The circulation pipe contains a heat-absorbing solution, which can significantly improve the heat dissipation capacity of the outer bearing ring, slowing down bearing material fatigue and performance degradation.

The utility model relates to the technical field of handles, in particular to a multi-angle conversion handle which comprises a handle seat and the like. The screw is movably arranged on one side of the handle seat, one end of the screw extends into the handle seat and is connected with the handle body, the handle body is movably connected with the handle seat, and the elastic piece is arranged at the end, extending into the handle seat, of the handle body. The end, away from the handle body, of the elastic piece is fixedly connected with the steel ball, and the steel ball abuts against the inner wall of the handle base. Through the design of parts such as the screw and the handle body, the angle can be adjusted according to needs, higher flexibility and convenience are provided, the requirements of different users and using scenes are met, meanwhile, the steel balls connected with the elastic pieces slide in the handle base, friction force feedback is provided, and the safety of the handle is improved. A user can clearly perceive the rotation angle of the handle body, and the operation feeling is enhanced.

The utility model relates to the technical field of wing blades, in particular to an improved wing blade structure which comprises a wing blade body, the wing blade body is composed of an upper L-shaped plate, a lower L-shaped plate and a blocking plate, the upper L-shaped plate, the lower L-shaped plate and the blocking plate are welded and fixed, the lower L-shaped plate wraps the inner side of the upper L-shaped plate and is connected with the upper L-shaped plate, and the blocking plate is connected with the lower L-shaped plate. The blocking plate is welded to the end of the joint of the upper L-shaped plate and the lower L-shaped plate, and the surface of the upper L-shaped plate and the surface of the blocking plate are coated with a first protection plate and a second protection plate correspondingly. According to the improved wing blade structure, the protection plate I and the protection plate II which are made of stainless steel are welded on the surfaces of the upper L-shaped plate and the blocking plate, so that the direct contact between the wing blade and a corrosive material is effectively reduced, the corrosion resistance of the wing blade in a severe environment is remarkably enhanced, and the service life of the wing blade is prolonged; and the hardness and wear resistance of the stainless steel material are superior to those of a traditional manganese steel plate, abrasion of the material to the wing blades in the operation process can be effectively reduced, the equipment maintenance cost is reduced, and the equipment operation efficiency is improved.

The utility model belongs to the field of spraying devices, and particularly relates to a spraying device for steel structure machining, which comprises a rack, and a plurality of spraying mechanisms are fixedly mounted at the top of the rack; the spraying mechanisms are symmetrically distributed; a hydraulic cylinder is fixedly connected to one side of the rack; the output end of the hydraulic cylinder is fixedly connected with a supporting frame. The other side of the rack is fixedly connected with a telescopic rod; the telescopic rod and the supporting frame are fixedly connected. The support frame is in sliding connection with the rack; a steel member is arranged at the top of the support frame; fixed pulleys are symmetrically and rotationally connected to the two sides of the rack. Steel wire ropes are symmetrically and fixedly connected to the tops of the two sides of the supporting frame; the steel wire rope is in contact with the adjacent fixed pulley; and through the cooperation effect of the supporting frame and the connecting frame, uniform spraying of the surface of the steel member can be completed without adjusting the position of the steel member during spraying, and then the convenience of the device during spraying of the steel member is improved.

The utility model relates to the field of steel wire rope anti-abrasion protection devices, and discloses a portal crane steel wire rope anti-abrasion protection device. According to the device, a steel wire rope is arranged in a protective connecting sleeve, an oil storage tank is embedded in the inner wall of the protective connecting sleeve, a bottom box is arranged at the bottom end of the oil storage tank, a permeable layer is arranged in the bottom box, and a permeable plate is arranged on the portion, on the inner side contact face of the protective connecting sleeve, of the permeable layer; by arranging the lubricating assembly, direct contact between the steel wire rope and the external environment can be effectively reduced, the abrasion rate of the steel wire rope is reduced, the service life of the steel wire rope is prolonged, lubricating oil arranged in the oil storage tank can overflow outwards through cooperation of the permeation layer and the permeation plate, and the lubricating effect is improved. And the steel wire mesh can play a certain protection role when the lubricating oil overflows.

The utility model discloses a ball valve, including valve body, flow passage, ball and drive part. The valve body is equipped with filter assembly, including filter block and fixed part, is equipped with installation cavity on filter block, is equipped with filter screen in installation cavity. The arc rotation groove is equipped on filter block, and the flow passage department of valve body one side is equipped with limit stop, and the limit groove that communicates rotation groove is still equipped on filter block, and the fixed part is inserted in the junction of rotation groove and limit groove to fix filter block. The support frame is equipped on filter screen, and the outer periphery of support frame is equipped with support block, and the arc installation groove is equipped in filter block, and support block realizes support frame installation in the sliding of installation groove. The fixed ball and spring are equipped in installation groove, and spring drive fixed ball and support block on the cooperation locking of clamping groove. The fixed part includes locking frame, and is equipped with limit portion and abutting portion on it, and abutting portion abuts in rotation groove, and limit portion is inserted in the sealing groove on valve body. The utility model filter assembly convenient to dismount, and fixed reliable, is convenient for washing or replacement filter screen.

The present application relates to the field of drilling engineering, and particularly relates to a kind of automatic spraying device and operating method of drill pipe thread grease, including self-locking screw lifting platform, rotating platform assembly, support assembly, telescopic rod assembly, spraying head and thread grease conveying pipe;Spraying head includes outer thread spraying assembly, push-pull cylinder A, piston rod A, push-pull cylinder B, piston rod B, inner thread spraying assembly and shell;The self-locking screw lifting platform realizes the lifting of spraying head;The rotating platform assembly realizes the rotation of spraying head;The telescopic rod assembly realizes the centring of spraying head;The spraying head is sprayed with thread grease to drill pipe joint.The beneficial effects of the present application are: automatic spraying thread grease is realized, intelligent drill pipe conductor ring is prevented from being contaminated, operation efficiency is improved and different specifications of drill pipe joint can be adapted.

The utility model belongs to the technical field of feeding equipment, it is a granulator ration feeding device, include: through a plurality of weighing sensor support on the support frame screw conveyer auger, set up in the first buffer subassembly of screw conveyer auger feed port, first buffer subassembly includes: hard connection on the support frame compensation cylinder, the feed port of screw conveyer auger is connected to the compensation cylinder upper and lower activity nest, the upper portion of compensation cylinder still be provided with the connecting piece for connecting the discharge gate of bunker. Through the design of first buffer subassembly reduces the impact force of material falling, further improves the accuracy of measurement. The activity nest design of compensation cylinder and the feed port of screw conveyer auger makes screw conveyer auger not directly with bunker equipment contact, reduces the direct contact of bunker equipment and screw conveyer auger because of bunker equipment vibration leads to factors, the influence to screw conveyer auger and weighing sensor, thereby improves the weighing accuracy of feeding device.

The utility model relates to food processing technical field discloses a kind of beef granule baking machines with turnover function, including heating semicircle bottom, the top of heating semicircle bottom is fixedly connected with baking wall, the top of baking wall is fixedly connected with fixed cover, the top of fixed cover is fixedly connected with torque motor, the driving end of torque motor is fixedly connected with rotary arm, rotary arm is rotatably connected with connecting rod at one end away from torque motor, the outside of heating semicircle bottom is fixedly connected with automatic switch component.The utility model in, through the accurate control of torque motor, the timed quantitative input of beef granule can be realized, this not only can avoid the uneven stirring caused by too much one-time feeding, ensure that each beef is heated fully, but also can reduce the direct contact of artificial and machine, reduce the safety risk caused by machine sudden start, make feeding rhythm and baking process more matched simultaneously, improve the smoothness of overall processing.

This utility model belongs to the field of graphite hot field technology, specifically relating to a graphite hot field splicing positioning ring, including a base splicing ring. Several supporting brackets are evenly spliced ​​on the outer ring of the base splicing ring. One end of each supporting bracket extends into the inner ring towards the center of the base splicing ring, while the other end extends radially outward away from the base splicing ring. A clearance-fitting support ring is fitted onto the outer ring of each supporting bracket to lock it in place. By using the base splicing ring as a base to evenly distribute multiple supporting brackets to form a crucible support structure, not only is the force balanced among the components, but direct contact with the crucible is also greatly reduced, avoiding the problem of the positioning ring transferring a large amount of crucible temperature and affecting the heating effect. The positioning ring is assembled from a few components, and the disassembled parts occupy less space, making it easier to transport. The assembly process requires no tools or connectors, and workers can install it by hand.

This invention relates to a silicon-carbon anode material for use in sulfide solid-state batteries, a modification method thereof, and a sulfide solid-state battery and its preparation method. The modification method includes: providing a porous silicon-carbon material, dispersing it in pure water or anhydrous ethanol to obtain solution A; adding a metal source to pure water, and adding oxalic acid or an alkaline solution dropwise while stirring until homogeneous to obtain solution B; transferring solution A to a water bath for stirring, and slowly adding solution B dropwise until the water evaporates, uniformly coating the surface of the silicon-carbon material with the precursor material to obtain the coated material; drying the coated material, and then heating and holding it under a nitrogen atmosphere to convert the surface metal oxide precursor into metal oxide, thus obtaining the silicon-carbon anode material. This invention avoids the addition of a solid electrolyte by constructing a lithium-ion transport layer in situ on the porous silicon-carbon material, thereby improving the initial discharge capacity and cycle stability of the battery, and achieving high capacity retention.

The utility model discloses a file cabinet, which belongs to the technical field of storage cabinets and comprises at least one storage cell, each storage cell comprises a cell body, a door plate, a door lock mechanism and a door opening and closing mechanism, and each cell body is used for storing files and is provided with an access port; the door plate is hinged to one side of the access opening and used for sealing the access opening; the door lock mechanism is used for locking the door plate and the grid body; the door opening and closing mechanism comprises a connecting rod, a linear guide structure and a linear driving structure, the first end of the connecting rod is hinged to the door plate, the second end of the connecting rod is hinged to a movable part of the linear guide structure, a fixed part of the linear guide structure is connected to the lattice body, and the movable part is further connected to the linear driving structure. The door plate can be opened and closed at a set speed without manual contact, noise and personal injury caused by sudden bounce-off of the door plate can be reduced, user contact is reduced, and safety, comfort and sanitation of the access cabinet are improved.

The utility model relates to the field of dyeing equipment, in particular to dyeing equipment for regenerated polyester yarns. Comprising a frame, a mixed-flow pump, a stirring barrel, a cover, a stirrer, an adjusting structure and an auxiliary structure, the mixed-flow pump is installed on the upper surface of the frame, the stirring barrel is installed on the upper surface of the frame, the arc surface of the stirring barrel is fixedly connected with the cover through the adjusting structure, and the stirrer is rotationally connected to the inner wall of the stirring barrel through the auxiliary structure. The arc surface of the stirring barrel is provided with an adjusting structure, the adjusting structure comprises a fixing plate, the fixing plate is fixedly connected with the stirring barrel, and the upper surface of the fixing plate is fixedly connected with a motor. The dyeing equipment for the regenerated polyester yarn has the advantages that the cover can be automatically opened or closed, the risk that personnel make direct contact with the equipment can be reduced through automatic cover opening, and the operation safety is improved especially in the high-temperature or chemical dye environment.

The utility model discloses a mining sampling machine which comprises a shell, a sampling pipe is arranged on the shell, driving structures matched with the sampling pipe are respectively arranged on the shell, a connecting plate is arranged between the two driving structures, the output end of the sampling pipe is fixedly connected with the connecting plate, a pair of sliding rails is fixedly connected to the connecting plate, the pair of sliding rails form a sliding way, and the sliding way is fixedly connected with the shell. A slide plate is slidably connected in the slide way, kidney-shaped holes matched with the sampling pipes are formed in the slide plate, a plurality of connecting cylinders matched with the kidney-shaped holes are mounted on the slide plate, sampling bottles are detachably mounted at the lower ends of the connecting cylinders, a flow guide groove is rotatably connected to the slide plate, and a liquid discharge pipe is mounted on the flow guide groove. Compared with the prior art, the mining sampling machine has the advantages that quantitative sampling can be effectively realized, the amount of collected ore pulp can reach the standard as required, subsequent experimental analysis and research are facilitated, the possibility that an operator is in direct contact with the ore pulp is reduced, the operation of the operator is reduced, and the labor intensity of the operator is further reduced.

This utility model belongs to the field of flower basket inspection technology, specifically relating to a flower basket deformation conveying and inspection device. It includes a frame, a vision inspection mechanism, a conveying mechanism, and a lifting and advancing mechanism. The frame has multiple workstations; the vision inspection mechanism is positioned above the inspection stations; the conveying mechanism is positioned outside the inspection stations with its conveying direction along the y-axis; and the lifting and advancing mechanism is positioned below the worktable, driving the flower baskets to move sequentially from the loading station to the conveying station along the x-axis. This utility model effectively solves the problem of insufficient buffer space on the inspection table in existing technologies by setting multiple workstations for placing flower baskets, reducing the risk of material blockage. The lifting and advancing mechanism automatically advances the flower baskets from the loading station to the conveying station, eliminating the need for manual handling. The coordinated arrangement of the vision inspection mechanism and the conveying mechanism accurately detects the quality of the flower baskets and conveys them in different directions based on the inspection results, improving production line flexibility.

This invention discloses a high-strength bearing housing, relating to the field of bearing housing technology. It includes an isolation boss, one end of which is fixedly fitted with a corrosion-resistant protective layer made of corrosion-resistant material. Reinforcing side plates, which enclose the corrosion-resistant protective layer, are fixedly fitted at both ends of the protective layer. Fastening rods, which are securely connected to the reinforcing side plates, are fixedly fitted inside the reinforcing side plates. The advantages of this invention are: by adding an isolation boss to the surface of the bearing housing, the corrosion-resistant protective layer is supported, forming a corrosion-resistant protective structure on the outside of the bearing housing. Simultaneously, the isolation cavity supported by the isolation boss forms a second layer of protection, reducing direct contact between corrosive substances and the bearing housing. Furthermore, the reinforcing side plates form a closed protective space within the corrosion-resistant protective layer, covering and protecting the bearing housing, making it less susceptible to corrosion from complex environments and improving the overall strength of the bearing housing.

The application discloses a silicon-carbon negative electrode material, a preparation method and a battery, and relates to the technical field of battery materials. The preparation method comprises the following steps: placing a porous carbon material in an inert atmosphere, pre-treating by heating, and removing impurities and moisture on the surface of the material; depositing a nano-silicon layer on the surface of the pre-treated porous carbon material in a gas phase; then depositing a carbon coating layer on the surface of the nano-silicon layer; and performing oxidation passivation treatment on the surface of the carbon coating layer, thereby obtaining the silicon-carbon negative electrode material.

This utility model discloses a machining device for positioning holes in CNC machining fixtures, relating to the field of positioning hole machining technology. It includes a worktable with an adjustment component inside, and a U-shaped frame fixed to the top of the worktable. A movable plate is slidably connected to the inner wall of the U-shaped frame, and an oil spraying component is located at the top of the movable plate. The adjustment component includes a fixed seat fixed to the center of the top of the worktable. This utility model achieves positioning and fixing of the positioning hole by inserting a positioning pin into the positioning hole in the part. When the tapered shaft rises, multiple sets of ball joints compress the return spring and extend from inside the positioning pin until the end face of the ball joint abuts against the inner wall of the positioning hole in the part. This effectively adapts to changes in the diameter of the positioning hole, ensuring precise alignment between the part and the tool, thereby improving machining accuracy, enhancing the versatility and flexibility of the device, avoiding frequent replacement of positioning pins of different sizes, simplifying the operation process, and improving production efficiency.

The utility model discloses a roll adjusting device of a roll grinder, which belongs to the technical field of roll grinders and comprises a first electric guide rail and a protective mechanism, the surface of the first electric guide rail is slidably connected with a clamp seat, the protective mechanism comprises a protective cylinder fixedly connected to the top of the clamp seat, and the inner wall of the protective cylinder is rotatably connected with a screw rod. A first servo motor is fixedly connected to the inner wall of the clamp base, an output shaft of the first servo motor is fixedly connected to the bottom end of a lead screw, a placing base is slidably connected to the inner wall of the protective cylinder, and the surface of the lead screw is in threaded connection to the lower end of the inner wall of the placing base. By means of the mode, the surface of the lead screw is enclosed through the protective cylinder, metal chippings generated in the grinding process are prevented from being attached to the surface of the lead screw, abrasion between the lead screw and the containing base is reduced, the installation effect of the roller is guaranteed, friction between the rotating roller and the containing base is reduced through the balls, and it is guaranteed that the roller is smooth in the rotating process.

The application provides a method for detecting biochemical oxygen demand in sewage, and belongs to the field of oxygen demand detection. The method comprises the following steps: forming a fluorine-containing organosilicon nano coating on the electrode surface of a dissolved oxygen sensor of a full-automatic BOD5 analyzer to obtain a fluorine-silicon modified dissolved oxygen sensor; pretreating the sewage to be detected in an adsorption column composed of modified activated carbon and porous silica gel to obtain a pretreated water sample; fixing bacillus subtilis on a porous carrier and then putting the carrier into the pretreated water sample to obtain an inoculated water sample; measuring the initial dissolved oxygen of the inoculated water sample and the end-point dissolved oxygen after 5-day culture; and obtaining the five-day biochemical oxygen demand in the sewage according to the initial dissolved oxygen and the end-point dissolved oxygen. Through the four-level collaborative system of "sensor anti-interference optimization, sample purification and enrichment, microbial reaction standardization and accurate signal acquisition", the application systematically eliminates the error sources in the traditional BOD5 detection, and realizes the accurate measurement of the organic matter pollution level in complex sewage.

The utility model relates to the technical field of lithium battery positive electrode materials, and discloses a pretreatment sagger and sintering equipment. The lithium layer is arranged at the bottom of the sagger body and is suitable for preventing lithium from being absorbed by the sagger body in the sintering process; the lithium layer is composed of one of lithium carbonate, lithium hydroxide or lithium oxide and is fixed to the bottom of the sagger body. The sintering equipment comprises a sintering furnace; the saggar bearing frame is arranged in the sintering furnace and used for fixing and arranging the multiple pretreatment saggars. The gas circulation system is used for introducing inert gas or reducing gas into the furnace in the sintering process so as to prevent lithium from being oxidized. The lithium layer can reduce direct contact between the sagger body and lithium, so that corrosion and abrasion of the sagger are reduced, and the service life of the sagger is prolonged.

The invention discloses an automatic dosing machine for medical intravenous medicine, and relates to the technical field of medical instruments and intelligent medical equipment. Comprising an addition execution module, a visual verification module and a central control unit, the assembly execution module comprises a base, a stand column, a lifting guide and transmission assembly and an upper end mounting seat, the stand column is vertically arranged on the base, the lifting guide and transmission assembly is arranged on the stand column in a lifting mode, and the upper end mounting seat is fixedly connected to the lifting guide and transmission assembly; the upper end mounting seat is provided with a needle inserting assembly, a pushing and injecting assembly and a supporting and positioning part, and the visual verification module comprises an image acquisition device which is used for acquiring identification information of a medicine or a container to be added with the medicine. According to the invention, the automatic intravenous medicine adding and dispensing system based on visual verification and central control is constructed, so that the defects of the prior art in the aspects of medicine safety, occupational exposure risk, adding and dispensing precision, operation efficiency and the like are systematically overcome.

This invention discloses a coal gangue grouting and filling material with high rheological resistance and resistant to bleeding, its preparation method, and its application, relating to the field of mine filling material technology. The grouting and filling material, by mass percentage, comprises: 70%~75% coal gangue, 0.55%~2.3% composite rheology modifier, and the balance being water; wherein the composite rheology modifier includes an air-entraining agent and a dispersant, with a mass ratio of (90~99):(1~10); the air-entraining agent is a surface-active foaming material, and the dispersant is a phosphate additive. In its preparation, coal gangue is first mixed with water and stirred to obtain an initial slurry; then the air-entraining agent and dispersant are mixed to prepare the composite rheology modifier; finally, the composite rheology modifier is added to the initial slurry and stirred until homogeneous to obtain the grouting and filling material. This grouting and filling material uses coal gangue as the main raw material, has a simple preparation process, and possesses excellent fluidity, stability, and pumpability.

The invention discloses a robot system for laboratory pretreatment autonomous operation, which relates to the technical field of intelligent robots and is formed by organically fusing four core parts, namely a moving and executing platform, a sensing module, an operation and end tool module and a control and calculation module. Autonomous operation is realized through a set of layered progressive closed-loop feedback intelligent control logic: firstly, a macroscopic experiment task is gradually decomposed into executable'action-nodes' from top to bottom; secondly, real-time closed-loop feedback is formed through multi-source 3D vision and tail end force perception, the track of the mechanical arm is dynamically corrected, and the operation force is accurately controlled; and finally, two arms are driven to work cooperatively through parameterized mapping and accurate time sequence control, so that unmanned, standardized and high-reliability operation of a sample pretreatment process is realized in a variable experimental environment, and the limitation of manual operation and an existing single-function automation scheme is effectively overcome.