110results about How to "Avoid homework" patented technology

The invention belongs to the technical field of oil drilling, and relates to a double-throttle control slurry pump distributing manifold for applying wellhead back pressure and a method. The double-throttle control slurry pump distributing manifold for applying the wellhead back pressure comprises a main pipe, a manifold four-way joint, a first distributing pipeline, a second distributing pipeline and a third distributing pipeline; the manifold four-way joint is respectively connected with the main pipe, the first distributing pipeline, the second distributing pipeline and the third distributing pipeline; a pressure gauge is installed on the main pipe; and the first distributing pipeline is provided with a first stop valve and a first throttling valve, the second distributing pipeline is provided with a second stop valve and a second throttling valve, and the third distributing pipe is provided with a third stop valve. The pump is unnecessary to stop and start in the connecting process, the pulling out process and the drilling down process, so that the pressure fluctuation on the bottom of a well can be reduced, and the control capacity for the bottom pressure can be improved; a back pressure pump is not needed, so that additional work caused by the back pressure pump is avoided, the nonproduction time can be reduced, and the drilling cost can be reduced; the pollution caused by the leakage of the back pressure pump can be avoided; and the energy and the floor area can be saved.

The object of the invention is to diminish the breakage of a back sheet caused by the application/stripping of a fixing tape. A back sheet (12) obtained by superposing a hydrophobic sheet (12A) made of a hydrophobic resin and nonwoven fabric sheets (12B and 12C) and press-bonding the sheets is used. In forming the sheet (12), the hydrophobic sheet (12A) and the nonwoven fabric sheets (12B and 12C) are superposed together with a hot-melt adhesive interposed between these, and the sheets are then press-bonded with heating. The bond strength between the hydrophobic sheet (12A) and the nonwoven fabric sheets (12B and 12C) is higher than the peel strength between the nonwoven fabric sheets (12B and 12C) and the male material (Y) applied thereto. The sheet (12) has a value determined by a KES flexural test of 0.05-0.50 gm<2>/cm.

The invention provides a narrow-fuselage six-arm fully hydraulic anchor rod anchor cable drill carriage which is composed of a walking mechanism, a lifting mechanism, a temporary support mechanism, a drilling arm mechanism, a pump station part, an electrical system and a hydraulic system. According to the narrow-fuselage six-arm fully hydraulic anchor rod anchor cable drill carriage, two rotating workbenches are arranged in front of a machine body, and each rotating workbench is provided with two drilling arms which rotate by 90 degrees through the rotating workbenches, the drill carriage is folded to make the narrow fuselage state be only 1.4 m, passing of the drill carriage and an integrated extractor in a roadway is achieved, the drill carriage can be unfolded by 5 meters when reaching a roadway head-on, four front drilling arms mainly hit a top anchor rod, two rear drilling arms mainly hit a top anchor cable and a side anchor rod, the six drilling arms work simultaneously, rapid anchor protection of the roadway can be realized, support efficiency can be greatly improved, tunneling footage is greatly improved, the coal extraction imbalance contradiction is better solved, and safe, efficient and benign development of coal production is promoted.

The invention relates to the field of tunnel construction, in particular to a construction method for newly increasing an arched open cut tunnel at a railway operating line tunnel portal. The construction method solves the problems that the conventional construction method for newly increasing the arched open cut tunnel at the railway operating line tunnel portal has complex process, difficult operation, low construction efficiency, large safety risk, poor construction quality and the like. The construction method comprises the following steps of: surveying setting-out, construction of manually digging hole piles, fiber concrete slab prefabrication, joist construction, processing and assembly of an H profile steel frame, short side wall construction, arch construction of the arched open cut tunnel, end-sealing concrete construction and the like. The fiber concrete slab and the profile steel frame form an integral structure, so the stability is good, and the safety is ensured; the method avoids formwork removal operation after arch concrete pouring is finished, simplifies the construction process, accelerates the construction progress, and has considerable economic benefit; the profile steel frame is uniformly processed in a processing factory and pre-assembled and hoisted on site so as to shorten the operation time and improve the construction efficiency; and the fiber concrete slab is prefabricated in the factory and then arranged on site, so the arched open cut tunnel has surface finish and attractive appearance.

The invention discloses a wet concrete spouting process for use under a coal mine. A mechanical grouting production line is adopted, and comprises a crawler-type movable wet concrete sprayer, a crawler-type movable mixing station and a rubber-wheel movable belt feeder. The process comprises the following steps: feeding a mixed dry material into a stirring hopper of a stirring station by using a belt feeder; adding water into the stirring hopper; conveying wet concrete into a hopper of the concrete sprayer; pushing to a spray gun through a pumping system; spraying the concrete onto a tunnel construction surface in a circle-drawing manner by using compressed air containing a liquid setting accelerator; performing overall grouting on the roof and sides of a tunnel through the mechanical actions such as forward/backward extension and contraction, upward/downward pitching and leftward/rightward swing of a manipulator in the tunnel. By adopting the wet concrete spouting process, a dry (damp) spraying process adopted in the conventional grouting of tunnels under coal mines in China is eliminated, the hidden danger of dust endangering the health of workers is eliminated greatly, and the grouting mechanization level is raised.

The invention discloses an overhanging type movable blanking platform for construction technology. The overhanging type movable blanking platform structurally comprises protection baffle plates, a bearing frame, movable cross beams, pulleys, sliding rails, an automatic discharging device, a movable inclined plate, fixed cross beams, support upright posts, underboardings, reinforcement connecting rods and lateral protection plates, wherein the automatic discharging device comprises a fixed inner plate, a supporting point, a discharging plate, a lifting mechanism, a right-sided support plate, abalance mechanism, a fixed base, a power mechanism, a transmission mechanism and a fixed inner plate support rod. According to the overhanging type movable blanking platform for construction technology disclosed by the invention, the lifting mechanism, the balance mechanism, the power mechanism and the transmission mechanism are arranged in the automatic discharging device, and automatic discharging can be realized when cargoes are fallen into a bearing table, the problem of time consumption and labor consumption during manual transportation and blanking is solved, the construction difficultyis reduced, and the construction efficiency is improved.

The invention relates to a rock drivage process for a four-arm hydraulic drill rig and a breaking-loading-transporting-guniting integrated machine. The process is mainly characterized by adopting the four-arm hydraulic drill rig to carry out porthole drilling, hole supporting and anchor bolt and cable supporting, and adopting a rock breaking-loading-transporting-guniting integrated machine combining the functions of rock breaking, rock loading, rock transporting and guniting to cooperate to complete rock operation. The process comprises the specific steps of hole drilling, charging, blasting, temporary supporting, supporting, guniting and the like, and the four-arm hydraulic drill rig and the rock breaking-loading-transporting-guniting integrated machine alternately go into a rock driving face area to perform construction operation in the rock drivage process. The process adopts advanced technical equipment, makes the improvement on the existing rock drivage technology, entirely realizes the comprehensive mechanical operation for rock construction, and has the obvious advantages of improving rock drivage footage level, reducing labor intensity of workers, saving human power, raising efficiency, improving field operating environment, reducing the occurence of occupational diseases, effectively ensuring safe production and the like.

The invention discloses a gently-inclined broken thin lode medium-depth hole mining method. According to the mining method, the sizes of ore rooms and ore pillars are determined according to the mechanical properties of rock mass and the explosion power cast blasting energy distance so as to rationally divide and arrange the ore rooms and the ore pillars; medium-depth blast holes are drilled in the ore pillars, and ore mining is performed; and by combing explosion power transportation and mechanical transportation, the caving ore is transported, such that the safe and efficient mining is performed on the gently-inclined broken thin lode. According to the present invention, by using the medium-depth mining ore extraction method, the operation of the construction personnel under the stope roof can be avoided so as to ensure the safety of the construction personnel and improve the production capacity and the production efficiency of the stope; by using the explosion power transportation technology, the caving ore transportation efficiency is improved, the mining cutting engineering arrangement is optimized, the mining cutting engineering amount is reduced, and the mining process is simplified; and with the method, the problems of low production efficiency, high safety risk of the construction personnel and the like of the traditional room and pillar method can be effectively improved, and the wide practicality is provided.

The invention relates to a crevasse plugging system and plugging method. The crevasse plugging system comprises a hanging bridge used for being suspended above a crevasse; the hanging bridge is provided with a plurality of pile holes, and a stopping pile rod is arranged in each pile hole in a penetrating manner; the lower end of each stopping pile rod is used for being inserted into a riverbed ofthe crevasse; and the crevasse plugging system further comprises a water stopping piece abutting against the stopping pile rod in the flood flowing direction to stop flood. Due to the fact that the two ends of the hanging bridge are correspondingly fixed to the two sides of the crevasse, a channel for an operator to pass through is formed, and it is avoided that a person performs operation in theflood; each hanging plate, suspending above the crevasse, of the hanging bridge is provided with the stopping pile rod in a penetrating manner, and the stopping pile rods are used for being inserted into the riverbed; the water stopping piece is placed on the side, close to the inner side of the crevasse, of each stopping pile rod; each water stopping piece is limited due to stopping by the corresponding stopping pile rod, and a role of stopping the flood temporarily can be played; and at the moment, soil and stone, sand bags and other filler are thrown into the side, backing onto the riverbed, of the water stopping pieces, and washing away by the flood is not likely to be caused, the crevasse plugging time is shortened, and the work efficiency is improved.

The invention relates to a comprehensive mechanical rock drift excavating process, which adopts a comprehensive mechanical rock drift operation line, and is characterized in that the comprehensive mechanical rock drift operation line comprises a comprehensive rock drift excavating machine, a crawler-type movable belt conveyer and a crawler-type movable wet-type mortar spraying machine, wherein the comprehensive rock drift excavating machine is used for excavation and supporting operation, the crawler-type movable belt conveyer is used for conveying rocks from a working surface to the outside, and the wet-type mortar spraying machine is used for carrying out wet-type mortar spraying sealing to a rock drift. In the rock drift excavating process, the comprehensive mechanical rock drift excavating machine which integrates rock cutting, rock loading, rock carrying and supporting is adopted for rock drift excavating, and the wet-type mortar spraying machine is used for spraying mortar, so that the rock shift operation can be carried out. According to the invention, the original blasting and rock-breaking process is cancelled, the construction process is simplified, the production with potential safety hazards can be greatly reduced, and the safety performance is greatly improved.

The invention provides a protection device of a slag pot car backup camera pick-up lens. The protection device of the slag pot car backup camera pick-up lens comprises a box, a pick-up lens box and a cooling mechanism, wherein a view window is formed in one side wall of the box, the pick-up lens box is provided with an inner cavity for containing the slag pot car backup camera pick-up lens, a perspective portion for the lens to pick up images is arranged on the side wall of the pick-up lens box, the pick-up lens box is fixed in the box, the perspective portion directly faces the view window, and the cooling mechanism is arranged in the box, and used for cooling the box. BY using the protection device of the slag pot car backup camera pick-up lens, normal work of the slag pot car backup camera pick-up lens under severe environment can be effectively achieved, the slag pot car backup camera pick-up lens is enabled to meet field conditions, normal running of a backup camera function is successfully realized, use life of the lens is greatly prolonged, and conditions are created for normal and safe back run of a slag pot car.

An aircraft (20) route planning method, a console (10), and an aircraft system and storage medium are provided. The aircraft route planning method includes: acquiring route data; determining a route direction according to the route data, and determining a flight zone area based on the route direction; dividing the flight zone area into several sub flight zone areas along the direction of the flight route; planning the route path of the aircraft (20) in the several sub flight zone areas. Zone planning for the mission of the strip route is realized, and work efficiency is improved.

Novel purpose for controlling harmful cotton spider mites by utilizing amblyseius cucumeris as biological pesticide, wherein Amblyseius cucumeris is used as natural enemy for controlling and preventing cotton acarid, i.e. Cotton spider mites, including Tetrangchus urticae Koch, T. truncatus Ehara, T. cinnabarinus Boisduva and T. turkestani ugarov.

A construction method for a connection joint of a prefabricated sandwich side fascia specially comprises the steps of S1, hoisting the prefabricated sandwich side fascia, positioning the bottom edge, erecting an oblique support and leveling the prefabricated sandwich side fascia; S2, hoisting a superposed beam, erecting a vertical support, installing a horizontal fixed support, and fixing the superposed beam to the prefabricated sandwich side fascia; S3, hoisting and positioning a superposed floor slab; S4, making a erection bar penetrate through a connecting cable in a shear key groove, and connecting the erection bar with a stirrup of a superposed beam cast-in-situ layer fixedly; S5, placing a shear key additional rebar in the shear key groove and a superposed floor slab cast-in-situ layer; S6, arranging superposed floor slab cast-in-situ layer reinforcing mesh panels, pouring cast-in-situ concrete, and conducting curing and molding; S7, dismantling a bottom edge positioning device and the oblique support of the prefabricated sandwich side fascia. Compared with the prior art, the construction method for the connection joint of the prefabricated sandwich side fascia has the advantages that rebar bending is avoided on a construction site, construction efficiency is improved, and the rebar processing and construction technology is simplified.

The invention discloses a trench integrated mine collecting and mining method of an inclined ore body. A trench construction area is arranged in an empty area formed after mining. Trench constructionof the trench construction area specifically includes the steps that a trench slope used for guiding falling ore to move downward and/or protect the upper disc surface of the ore body is constructed at the corner of the upper disc surface and a bottom plate surface of the trench construction area; a mine collecting channel is reserved in the bottom plate surface when the trench slope is constructed, and the constructed trench slope, the reserved mine collecting channel and the lower disc slope of the ore body form a trench used for gathering the falling ore extracted from the upper portion ofthe trench to the mine collecting channel; the ore body on the upper portion of the trench is extracted and output from the upper portion and/or the side face of the mine collecting channel. The method easily improves the ore recovery rate, ore output efficiency, productivity, recovery safety and comprehensive economic benefits, and is suitable for exploitation of inclined ore bodies with medium stability from thin to medium thick and construction of a trench type mine output bottom structure.

The invention provides a method for recovering vibration energy of rear axle of an electric automobile. The method for recovering the vibration energy of the rear axle of the electric automobile comprises the steps of mounting a hydraulic cylinder between a frame and the rear axle of the electric automobile in a floating manner; forming a first oil port in a cavity, without a rod, of the hydrauliccylinder; forming a second oil port is in a cavity, with a rod, of the hydraulic cylinder; connecting an electromagnetic valve set to the first oil port and the second oil port; measuring a distancebetween the frame and the rear axle to obtain distance data; setting a time interval; when a distance measured within the time interval is reduced in the electric automobile running process, enablinghydraulic oil in the cavity without the rod to be drained into an oil tank via the first oil port, the electromagnetic valve set and a power generator by controlling the electromagnetic valve set; when the distance measured within the time interval is increased, enabling hydraulic oil in the cavity without the rod to be drained to the oil tank via the second oil port, the electromagnetic valve setand the power generator by controlling the electromagnetic valve set; and using the power generator to generate power and storing electric energy into a storage battery of the electric automobile. Byusing the method for recovering the vibration energy of the rear axle of the electric automobile, higher electric energy conversion efficiency is realized.

The invention discloses a sargassum kjellmanum attaching base supporting device and a fine sargassum kjellmanum variety breeding method. The attaching base supporting device comprises connecting ropes wound around two pulleys to form a closed loop, the pulleys fixed in a sea area raft frame, a supporting frame and lifting ropes, wherein the two parallel connecting ropes respectively move toward the opposite directions with rotation of the pulleys, the supporting frame is an upper-cover-free cuboid, the body wall of the supporting frame is full of small holes, the outer side face of the edge is provided with penetrating holes, the lifting ropes sequentially penetrate through the multiple penetrating holes along the edge of the supporting frame and are fixed to the penetrating holes, and two ends of each lifting rope are respectively fixed to the two parallel connecting ropes. The problems of low existing sargassum kjellmanum seedling yield, low stress-resistance capability and low effective ingredient content are solved, quality improvement of sargassum kjellmanum seedlings and fine variety breeding can be achieved.

The invention discloses a down-hole ultrasonic oscillation unfreezing device and method. The unfreezing device comprises a power supply and a cable collection and release device which are placed on the ground, a cable winds the cable collection and release device, and a depth positioning tool and an ultrasonic oscillation transducer are connected to the lower end of the cable; the ultrasonic oscillation transducer can extend to the upper portion or interior of a down-hole water distributor core for unfreezing operation. The depth positioning tool comprises a cable guiding connector and a magnetic positioning tool; the ultrasonic oscillation transducer comprises an axial ultrasonic transmitter and a radial ultrasonic transmitter. According to the down-hole ultrasonic oscillation unfreezingdevice and method, the problem can be effectively solved that since a water distributor is used for layered water injection of an existing offshore oilfield flooding well, the water distributor is frozen. Accordingly, the operation of a mobile pipe column is avoided, the operation intensity is lowered, the operation time is shortened, and the operation cost is reduced.