101results about How to "Play a pulling role" patented technology

The invention discloses an impermeable anti-cracking concrete which comprises the following components in parts by weight: 180-280 parts of cement, 50-70 parts of ore powder, 50-80 parts of fly ash, 920-980 parts of gravel, 700-750 parts of scrap, 100-200 parts of sand, 170-200 parts of water, 0.5-0.9 part of water reducing agent, 0.3-0.7 part of air entraining agent, 1-2 parts of polyacrylamide, 0.05-0.1 part of sodium alkyl benzene sulfonate, 0.2-0.4 part of ethylene glycol, 0.05-0.1 part of sodium carboxymethyl cellulose, 1.3-1.7 parts of commercial aluminum sulfate, 0.2-0.5 part of high-strength steel-wire-like fiber, 0.01-0.04 part of lauryl sodium sulfate, 0.7-1.3 parts of silica fume, 3.45-4.5 parts of anhydrite, 2.3-3 parts of sulfoaluminate clinker, 0.3-0.7 part of activator, 10-35 parts of hydrogen polypropylene fiber, 18-42 parts of graphite particle and 4.5-7 parts of foaming agent. The impermeable anti-cracking concrete has the advantages of high earthquake resistance, high shock resistance, high cracking resistance, high impermeability and high durability, and has the functions of fire resistance, sound insulation and thermal insulation.

The invention discloses an ultrahigh-toughness concrete and a production method thereof. The ultrahigh-toughness concrete is produced by proportionally mixing Portland cement, slag aggregate, steel fiber, silicon powder, flyash beads, lithium salt residue, latex, rubber powder, a nano waterborne binder, graphene-modified glass fiber, trimethylolpropane, sulfoaluminate clinker, a defoaming agent, polyoxyethylene alkyl ether, p-toluenesulfonic acid, nano silicon particles, nano calcium carbonate, elastic silicone acrylic emulsion, methyl N,N-dihydroxyethyl-3-aminopropanoate, water and a polycarboxylate superplasticizer. The ultrahigh-toughness concrete produced herein has high compressive strength, high tensile strength and lasting ultrahigh ductility and has good energy-dissipating capacityand elastic modulus.

The invention discloses a glass can uncapping machine rotated by holding force and fixed by pressure, and relates to the technical field of food fittings. The glass can uncapping machine rotated by holding force and fixed by pressure comprises a base; support legs are fixedly connected to the bottom of the base; a groove is formed in the upper surface of the base; the bottom of the inner wall of the groove is fixedly connected with a bottle body fixing device; first extension rods are fixedly connected to the upper surface of the base and positioned on the left and right sides of the groove; and a first support plate is fixedly connected to the upper surfaces of the first extension rods. In the glass can uncapping machine rotated by holding force and fixed by pressure, during uncapping, can bodies are fixed through a bottle body fixing device and a bottle cap fixing device, so that the problem of inconvenience to directly screw off bottle caps due to incapability of applying higher torsion to the bottle caps through hands caused by easy sliding between the hands and the bottle caps during screwing of the bottle caps due to more smooth surfaces of bottle bodies and the bottle caps in the prior art is effectively solved.

The invention discloses a multipoint contact stepless variable transmission, which comprises a transmission shell (1), an outer power input part (2) and an output end part (9), wherein the outer power input part (2) is connected with a driving part (3); the output end part (9) is connected with a driven part (8); a plurality of variable speed control execution mechanisms are uniformly arranged on the peripheries of the driving part (3) and the driven part (8); the driving part (3) is a driving cambered cone plate; and the driven part (8) is a driven cambered cone plate. According to the multipoint contact stepless variable transmission, ten, eight, six or four barbell type ferry wheels can be uniformly distributed in the circumferential directions of the cambered cone plates according to the power of an engine, and a plurality of points independently work respectively, so that influence on the whole transmission function is avoided when a certain point instantly fails; and the mutual hot backup of the points is the application of a redundancy design concept to the transmission.

The invention provides an array substrate. The array substrate includes at least pixel units of which each is enclosed by two data lines and two scan lines being vertically interleaved and pixel electrodes which are disposed in the pixel units; wherein the center lines of the pixel units are parallel to the data lines, and the pixel electrodes are arranged asymmetrically relative to the center lines. The array substrate has the advantage that a liquid crystal display panel provided by the invention uses the coupling effect of the data lines to affect the voltage values of the pixel electrodes,and the parasitic capacitance values formed between adjacent two data lines and the pixel electrodes do not cancel each other, thus the potential of the pixel electrodes is pulled, the voltage valuesof the pixel electrodes in different areas are kept close to a preset value, vertical crosstalk is reduced, and uniform screen brightness of the liquid crystal display panel is achieved.

The invention relates to the field of textiles, and especially relates to a dust exhausting device for textiles. With the dust exhausting device, fluff, dust or threads on the surface of textile fabric can be cleaned effectively to ensure smooth conduction of next working procedure. The dust exhausting device comprises a working bin which has a feed port and a discharge port. The inner top of the working bin is equipped with a winding-up roller through a first support near the left end, the surface of the winding-up roller is equipped with a hairbrush, and the hairbrush is equipped with a plurality of hooks. A second support is arranged at the right side of the first support, a scraper is hinged to the bottom of the second support, and a tension spring is arranged between the left side of the scraper and the bottom of the second support. A negative ion generator is arranged at the right side of the second support through a third support, and a flat plate is arranged at the bottom of the negative ion generator. A nozzle is obliquely arranged at the right side of the flat plate, and the nozzle is connected with an external hairdryer. The dust exhausting device for textiles is simple to operate and easy to use, and is applicable to a variety of places.

The invention discloses a pressure-relief type automatic multi-buffered reset explosion door, and relates to the field of a coal mine ventilation system. The explosion door comprises a sealing base, two side vertical plates, two slant opening doors and a tension spring component, wherein the tension spring component comprises two tension spring mounting seats and a tension spring; the tension spring mounting seats are connected to the outer sides of the slant opening doors; the two ends of the tension spring are connected with the tension spring mounting seats respectively; a driving shaft and a driven shaft are supported between the two side vertical plates and are both connected with a group of crank gear link mechanism; each group of crank gear link mechanism comprises two gears, two cranks and two links; one end of each crank is connected with one gear, and the other end of each crank is hinged to one end of one link; the other end of each link is hinged to one slant opening door respectively; the gear on the driving shaft is engaged with the gear on the driven shaft; one end of the driving shaft is connected with an electromagnetic clutch, a speed reducer and a motor in sequence. According to the door, pressure relief and timely reset can be realized, and the two doors are synchronously opened and closed.

The invention discloses an electric power facility protection supervision and control system and a use method thereof, and belongs to the field of power management and control. The invention disclosesan electric power facility protection supervision and control system and a use method thereof. A one-way expansion air bag is arranged at a joint of a cable bus, upon occurrence of an accident, the one-way expansion air bag can be intelligently controlled to expand. Meanwhile, under the action of the non-elastic inhibition ropes which are transversely arranged, the one-way expansion air bag intelligently performs longitudinal expansion along the direction of the longitudinal connection part of the cable. Therefore, in the process of continuous expansion, the two plug-in type joints are disconnected, power-off effect is automatically realized. The situation that accidental dangerous cases continue to spread is prevented, secondary damage is reduced, and safety is improved. Meanwhile, wheninflation continues to be conducted, the one-way expansion air bag can burst, so that the pre-breaking ball point can be scattered outwards along with the non-elastic restraining rope and hit againsta nearby object to be broken, insulating oil can overflow from the interior of the pre-breaking ball point, and the insulativity and the safety after the cable bus is broken are effectively guaranteed.

The invention discloses a scale clearing device for a vacuum bottle liner based on elastic deformation, and relates to the technical field of living goods. The scale clearing device for the vacuum bottle liner based on elastic deformation comprises a connecting block, the top of the inner wall of the connecting block is fixedly connected with a telescopic mechanism, and sliding grooves are formedin the positions, on the left and right sides of the telescopic mechanism, of the front and rear sides of the inner wall of the connecting block correspondingly; the inner walls of the sliding groovesare slidably connected with sliding blocks, the surfaces of the sliding blocks are sleeved with supporting mechanisms, and the surfaces of the supporting blocks are slidably connected with the innerwall of the connecting block. According to the scale clearing device for the vacuum bottle liner based on elastic deformation, a rubber belt is expanded, thus a brush is in a semicircular shape and makes contact with the bottom of the inner wall of the liner, the clearing device is rotated, the scale at the bottom of the inner wall of the liner is cleared through the brush, and thus the problems that at present, a bottle opening of the vacuum bottle liner is small, the bottom of the vacuum bottle liner is in a semicircular-ball shape, a brush head of an existing brush cannot make contact withthe bottom of the liner, and the liner cannot be cleared completely are solved.

The invention discloses an inorganic heat insulation board and a preparation method thereof. The inorganic heat insulation board is prepared from, by weight, 20-40 parts of pitchstone glass bead, 1.3-1.7 parts of industrial aluminum sulfate, 13-15 parts of zirconium carbide, 13-15 parts of cement, 2.4-4.5 parts of gypsum, 3-4 parts of attapulgite, 6-7 parts of nanometer waterborne binding agent, 2-2.5 parts of high-strength steel wire imitated fiber, 1-1.2 parts of sodium alkyl benzene sulfonate, 0.2-0.3 part of sulfoaluminate clinker, 5-7 parts of nano-crystalline cellulose, 0.2-0.3 part of 2-ao-3-nitrotoluene, 20-30 parts of lauryl sodium sulfate, 0.7-1.3 parts of ash calcium powder, 3-5 parts of fluorine-containing additive, 5-8 parts of 3-cyan-5-flourine-borophenylic acid, and 0.3-0.9 part of nanometer fumed silica. The heat insulation board is featured by excellent compactness, compressive strength, fireproof property, and high intensity.

The invention discloses a novel technology method for modeling a sandstone sculpture. A mixture is prepared from the following raw materials in parts by weight: 6 to 10 parts of resin, 35 to 50 partsof quartz sand, 60 to 80 parts of cellosilk, 70 to 90 parts of hemp thread, 150 to 250 parts of cement, 30 to 50 parts of catalyst, 20 to 50 parts of curing agent, and the balance color concentrate. The technology method for the sandstone sculpture comprises the following steps of S1, sculpturing a mud mold: blending gypsum and water into a porridge state; and S2, inverted manufacturing a mould: uniformly spraying pure gypsum prepared in S1 onto the surface of the mud mold, cutting the hemp thread and the cellosilk to the length being 1 to 2mm through a pair of scissors, uniformly blending thegypsum and water, placing the hemp thread and the cellosilk with the length being 1 to 2mm, adding a small amount of stone powder, uniformly blending, starting to attaching the blended gypsum onto the surface of the mod mold, and ensuring that the gypsum to completely cover the mud mold. The sculpture produced by the invention does not deform and is not easy to break, the service life of the product is prolonged, the production efficiency is improved, and the cost is reduced.

The invention discloses a double-tube raft frame which comprises ropes which are provided with anchors. The ropes are connected with a pair of floating tubes which are arranged in parallel. Each floating tube is in a closed hollow structure. Sink type mesh pieces are arranged at the lower side of each floating tube. A control device which is capable of charging air or discharging the air for the floating tubes is connected with the end portion of each floating tube. Balance floating balls are arranged on the floating tubes between the mesh pieces in a berthing mode. The mesh pieces are capable of effectively hanging and loading shellfish to conduct concentrated aquaculture. The double-tube raft frame is capable of well resisting waves by adopting the inflatable floating tubes. When stormy waves are heavy, the double-tube raft frame is capable of draining off water and sinking to avoid the stormy waves. The long and narrow structure is relatively beneficial for reducing tractive effort of directional water current. When the floating tubes are sunk at the bottom, the balance floating balls play a role of pulling and are capable of preventing the floating tubes from rupturing due to overlarge gravity. The double-tube raft frame has the advantages of being low in cost, resistant to high flow rate and high waves, firm in structure, high in aquaculture capacity and good in water flow performance.

The invention discloses an embedded anchoring type concrete crack repairing process, and belongs to the technical field of concrete repairing. A repairing rod is inserted into a repairing groove cavity, a plurality of transverse anchoring rods with the inner ends bonded with inner embedded rods are distributed on the end wall of an outer inserting rod from bottom to top, after a heated crack repairing agent is injected into the repairing groove cavity through the inner embedded rods, the inner embedded rods are heated to enable the inner ends of the transverse anchoring rods to be separated from the inner embedded rods and the outer inserting rod in sequence, a plurality of transverse anchoring rods are embedded into the crack repairing agent, the outer tip ends of the transverse anchoringrods are inserted into the repairing groove cavity to achieve the anchoring effect, then the outer inserting rod is pulled out upwards, secondary material injection is carried out, a concrete supplementing layer is formed in the crack repairing cavity, the inner embedded rods, a conical material guide part and the plurality of transverse anchoring rods are embedded into the repairing groove cavity, and the multiple transverse anchoring rods are distributed up and down, so that the transverse bonding degree between the concrete supplementing layer and the repairing groove cavity and the overall mechanical strength are effectively enhanced to a certain extent.

The invention discloses concrete anti-seismic impact-resistant anti-cracking agent. The anti-cracking agent is a mixture of the following materials in parts by weight: 13-17 parts of industrial aluminum sulfate, 2-5 parts of high-strength imitated steel wire fiber, 0.1-0.4 part of lauryl sodium sulfate, 7-13 parts of silica fume, 34.5-45 parts of anhydrite, 23-30 parts of sulfoaluminate clinker and 3-7 parts of active excitant; during a concrete preparation process, the weight of cementing material doped in the concrete is 6%-8%, so that the shrinkage of the concrete is compensated at a plastic stage and each stage after the hardening stage, and therefore, the anti-bending anti-folding capacity of the concrete can be increased, the anti-seismic impact-resistant performances and anti-cracking seepage-proofing performances of the concrete are improved and the durability of the structure is greatly strengthened.

The invention relates to a weak connection structure of a super high-rise corridor. The weak connection structure includes the corridor and a main building. The main building includes an upper body and a lower body. Concrete corbels are integrally formed on the outer side wall of the lower body, and the bottom surface of the corridor is fixed with an extension column. The weak connection structureincludes sliding supports fixedly connected to the top surfaces of the concrete corbels, the top surfaces of the sliding supports are fixedly connected first hinge supports, and the top surfaces of the first hinge supports are fixedly connected with first connecting rods. The ends, away from the first hinge supports, of the connecting rods are fixedly connected with second hinge supports, and thesecond hinge supports are fixedly connected to the bottom surface of the corridor. The outer side wall of the concrete corbels are fixedly connected to third hinge supports, the bottom surface the extension column is fixedly connected to fourth hinge supports, second connecting rods are rotatably arranged between the third hinge supports and the fourth hinge supports, and a traction mechanism isarranged between the upper body and the corridor. The weak connection structure has the effects of reducing the large displacement of the corridor caused by strong wind and earthquake at the time of realizing the weak connection and improving the safety between the corridor and the main building.

The invention discloses a splicer for floors. The side faces of the floors are provided with mortises, the requirement for forming tenons on the floors is reduced, and the waste of raw materials is reduced. The splicer comprises elastic tenons at the two ends. The two tenons on the splier are embedded in the mortises in the two adjacent floors through elastic deformation so as to be fixed. Connectors can elastically deform to be embedded in the mortises. The connectors and the floors are connected in a buckled mode. The mortises of the two adjacent floors wrap the connectors, the connectors have a pulling effect on the two floors, the deformation problem of cold contraction is reduced, and noise is eliminated.

The invention relates to the technical field of underground construction and discloses an original-soil and in-situ slurrying-based underground wall construction method. The original-soil and in-situslurrying-based underground wall construction method comprises the following steps of a, performing a grooving process, b, during the grooving process, injecting water into soil via a high-pressure pipe through a grooving machine, then performing stirring to form slurry, performing multi-spot sampling, detecting the density of slurry samples through a slurry densitometer, injecting water to adjustthe density of the slurry, performing sampling and detecting processes until the density of the slurry reaches a required density rho, and c, transversely and monolithically pouring a first wall piece on a support plate, after the first wall piece is formwork-removed, sinking the top surface of the first wall piece through a hoist till being level to the ground, and transversely and monolithically pouring a second wall piece on the first wall piece, wherein the second wall piece and the first wall piece are longitudinally overlapped, and sequentially transversely and monolithically pouring and sinking a plurality of wall pieces and son on in the identical manner until underground wall construction is completed. An underground wall constructed according to the original-soil and in-situ slurrying-based underground wall construction method is high in quality, free from leakage and secondary construction and capable of greatly reducing the construction cost and shortening the constructionperiod.

The invention provides a culture greenhouse film changing robot comprising a greenhouse support. The greenhouse support is formed through mutual parallel arrangement of a plurality of support strips; the two ends of the support strips are fixedly connected to the ground; each support strip is wholly arc-shaped after being fixed; the greenhouse support forms openings at two ends; the two sides of the opposite openings of the greenhouse support are provided with a first installing groove and a second installing groove; thin film coiled to be barrel-shaped is arranged in the first installing groove; sliding blocks are in sliding connection with the support strips; the thin film comprises a start end and the sliding blocks are connected with the thin film start end; a coiling shaft is arranged in the second installing groove and is connected with steel ropes; one end of each steel rope is wound on the coiling shaft and the other end is connected with one sliding block; a first motor is connected to the coiling shaft and the coiling shaft is connected with an output end of the first motor. Without manual replacement, the whole device can complete installation of greenhouse thin film and facilitate replacement.

The invention discloses beer fermentation equipment convenient to clean. The beer fermentation equipment comprises a fermentation vat body, wherein a feed port is formed in the upper part of the top of the fermentation vat body, liquid inlets are formed at the two sides of the feed port, a feeding hopper is connected to the feed port, a flow dividing table fit to the inner wall of the feeding hopper is arranged in the feeding hopper, a plurality of flow dividing holes penetrating through the top surface and the bottom surface of the flow dividing table are formed in the flow dividing table, amaterial mixing cylinder is connected to the lower part of the feed port, a spiral material mixing plate is arranged on the inner wall of the material mixing cylinder, a stirring shaft is connected tothe bottom of the fermentation vat body, a fermentation material frame with an opening in the top is connected to the side wall of the stirring shaft, the side wall and the bottom surface of the fermentation material frame are both of grid structures, an opening in the bottom end of the material mixing cylinder directly face the opening in the top of the fermentation material frame, and brush bristles are uniformly arranged on the outer wall of the fermentation material frame. According to the beer fermentation equipment, materials can be uniformly fed, and the mixing uniformity of the materials can be improved, so that the materials can be uniformly mixed in the continuous moving process, and meanwhile, the inner wall of the vat body can be cleaned conveniently.

The invention discloses a method for improving ozone reaction efficiency and belongs to the technical field of waste water treatment and ozonation. The method comprises the following steps that A, waste water enters a water distributing unit, mixed gas enters a gas distributing unit, and the gas-liquid ratio is controlled to be 0.5:1-1:1; B, after the water and the gas are mixed in a water inlet area, an interference-free reaction is conducted; C, then the water and the gas enter in a catalytic reaction stage, and supported composite catalytic materials serve as catalytic materials; D, after short flow of the water and the gas is removed, secondary adjustment is carried out on mixing of ozone and the waste water; E, the ozone and the waste water are distributed for the second time in a filter reaction unit, and water meeting the standard is discharged after the ozone and the waste water fully react. According to the method, the gas-water contact efficiency is improved, meanwhile, the reaction time of the ozone is prolonged, the gas-water mixing reaction can achieve extremely-high efficiency, and the reaction efficiency of the ozone can be above 99.9%.

The invention relates to a pipeline cleaning and propelling device, in particular to a rotary-cutting type pipeline cleaner. The rotary-cutting type pipeline cleaner comprises a fusiform cleaner body, rotary-cutting blades and a connecting piece, the rotary-cutting blades are arranged on the surface of the cleaner body, and the connecting piece fixedly connected with a cleaning trolley is arranged at the bottom of the cleaner. The cleaner body is composed of a pyramidal propelling section and an inverted pyramidal retreating section, and the rotary-cutting blades on the propelling section array in the clockwise direction, while the rotary-cutting blades on the retreating section array in the anti-clockwise direction. By the progressive propelling mode of drilling and cutting, any drain pipeline blockage problems can be solved. Meanwhile, the fusiform cleaner body capable of cleaning and cutting in the process of propelling and retreating is adopted, so that the problem that the blockage is further worsened to cause stoppage due to a traditional cleaning mode is solved thoroughly.

The invention discloses waste tire rubber regeneration concrete which is prepared from the following raw materials in parts by weight: 360-400 parts of Portland cement, 500-600 parts of natural crudeaggregate, 200-300 parts of regenerated crude aggregate, 363-379 parts of waste tire rubber powder, 70-90 parts of coal ash, 400-550 parts of chippings, 16.5-18.5 parts of rice hull ash, 13-15 parts of slag powder, 5-10 parts of re-redispersible rubber powder, 13-14 parts of polyacrylamide, 1.8-2.5 parts of a high-strength steel wire imitated fiber, 3.55-4.55 parts of anhydrite, 2.3-3 parts of sulfoaluminate clinker, 1.6-2 parts of nano calcium carbonate, 30-80 parts of a triterpenoid saponins air entraining agent, 50-80 parts of a naphthalenesulfonate formaldehyde condensation compound and 160-190 parts of water. The concrete disclosed by the invention is excellent in bending and impact resistance, and high in overall strength.

The invention discloses an aluminum honeycomb plate suspended ceiling which does not cause structural damage to an aluminum honeycomb plate and can be disassembled for recycling. The aluminum honeycomb plate suspended ceiling is characterized in that four edge banding strips are spliced end to end to form a rectangular frame, and an aluminum cellular plate is arranged in the rectangular frame; each edge banding strip comprises a first plate body, wherein the top surface of the first plate body protrudes to form a first buckle, the first buckle is used for being inserted into a triangular keelto be fixed, the outer surface of the bottom of the first plate body protrudes to form two opposite second plate bodies, the two second plate bodies are used for clamping and fixing the edge of the aluminum honeycomb plate, and the edge of the second plate body at the upper portion is bent to form a hook-shaped downward third plate body; a safety piece comprises a seventh plate body, the two endsof the seventh plate body are bent to form V-shaped clamping plates, and the V-shaped clamping plate on one side of the first plate body is bent downwards and extends to form a hook-shaped eighth plate body; and the two ends of the top of the triangular keel are embedded between the two V-shaped clamping plates to be clamped and fixed, and the eighth plate body is hooked on the third plate body tobe pulled and fixed.

The invention relates to a train gripping mechanism of a large roller coaster, which is amusement equipment. A car body and a hook head, a rotating shaft, a hook head and a guard plate are fixed in order to rotate a block. A rotating shaft is movably connected with a movable support. The extended end of the movable support is movably connected with a runner through a shaft pin. The extended top center position of the movable support is fixed with one end of another tension spring, the other end of another pull spring and the car body. The extended top end position of the movable support is fixed with one end of another tension spring, the other end of another pull spring and the guard plate. The extended top end position of the movable support is movably connected with the upper end of the pull rod, the lower end of the tie rod and the pulling block through the shaft pin. The pulling block is fixed by the screw through the guard plate chute and the rotating block. The rotating block is positioned in the round U groove of the hook head and movably connected. The slide block and the slide pin are movably connected with the ball, the hook through the hole and the ball, the top pin slide. There is a compression spring placed on the rear end of the top pin in the through hole. The rear end of compression spring in the through hole of the hook is connected with a screw thread. A pendant is put in a block U groove. The train gripping mechanism of the large roller coaster is a gripping mechanism, and has the advantages of being artful in structure and good in effect.

The invention discloses a combined curtain wall. The combined curtain wall comprises a vertical keel, a transverse keel, hollow glass and stone panels, the stone panels comprise a transverse stone panel and a vertical stone panel, the vertical keel is connected to a building wall body, the transverse keel is perpendicularly connected to the vertical keel, the vertical keel is connected to a supporting keel perpendicular to the building wall body, the end portion of the supporting keel is connected to a hanging plate through angle steel, the vertical stone panel is hung at the end portion of the hanging plate, the upper end and the lower end of the vertical stone panel are respectively provided with the transverse stone panel connected to the vertical keel, the periphery of the stone panel is provided with the vertical keel and hollow glass connected to the transverse keel, and a foam rod and a sealant are arranged between the hollow glass and the stone panel. The glass curtain wall and the stone curtain wall are combined, the advantages of the glass curtain wall and the stone curtain wall are combined, and meanwhile the attractiveness and stability of the whole structure are guaranteed.

The invention provides a hammer pulling device, and belongs to the field of bearing disassembly devices of mining machinery. The device comprises a sliding rod and a hammer body connected with the sliding rod in a sliding manner, wherein a baffle is arranged at one end of the sliding rod; a sleeve is arranged at the other end of the sliding rod; the sleeve is provided with a fastening structure used for fastening a bearing. When the hammer pulling device is in use, the bearing is fastened through the fastening device on the sleeve, and then the hammer body is rapidly and forcibly pulled, so that the hammer body slides along the sliding rod to impact the baffle, the hammer body applies strong instantaneous apply force to the baffle, so that the baffle drives the sliding rod, the sliding rod drives the sleeve, and the sleeve has a lifting effect on the bearing, thereby pulling out the bearing. The hammer pulling device can properly disassemble bearings on mining machinery, has a simple structure, and is easy to operate.

The invention relates to the technical field of buildings, and discloses a spliced composite slab structure. The structure comprises a first composite slab and a second composite slab; the first composite slab comprises a first prefabricated slab, a first cast-in-place composite layer and a first welded steel bar frame; the second composite slab comprises a second prefabricated slab, a second cast-in-place composite layer and a second welded steel bar frame; a first stressed steel bar assembly and a first connecting steel bar net are arranged between the first composite slab and the second composite slab; the first prefabricated slab abuts against the second prefabricated slab; and the first cast-in-place composite layer and the second cast-in-place composite layer are integrated by pouring. According to the structure, the first welded steel bar frame and the second welded steel bar frame are of integral grid steel bar structures and play a role in welding fixing so that the thicknessof the first prefabricated slab and the second prefabricated slab can be reduced when being manufactured, the anti-shearing effect is evenly achieved, a large number of steel bars do not need to be bound on site, the workload on a construction site is greatly reduced, and the construction efficiency is improved.

The invention provides waste mineral oil distilling equipment, which comprises a reaction kettle, a distilling tower, an external oil-conveying pipeline, an oil-jetting pipeline, a condenser, an oil collecting tank, an oil filling tank, a heating unit, a nitrogen making unit and a vacuum unit, wherein the distilling tower is arranged above the reaction kettle, and is connected with the condenser; one end of the oil collecting tank is connected with the condenser through a pipeline, and the other end of the oil collecting tank is connected with the vacuum unit through a pipeline; one end of the external oil-conveying pipeline is connected with the oil filling tank, and the other end of the external oil-conveying pipeline is connected with the oil-jetting pipeline positioned inside the reaction kettle; the heating unit is used for supplying heat energy to the distilling tower and the external oil-conveying pipeline; the nitrogen making unit extends into a nitrogen filling pipe inside the reaction kettle, and is used for conveying nitrogen into the reaction kettle. Under the pulling action of the vacuum unit and the pushing and stirring actions of the nitrogen making unit, the output and the yield of a finished product can be increased, and the cost is lowered.