57results about How to "Reduce the difficulty of support" patented technology

The invention discloses an implementation method for hardware-assisted dynamic priority scheduling of slave core tasks. The method comprises the following steps: architectural support is provided for scheduling by an operating system based on a main core plus slave core system so as to assist the operating system scheduler to schedule the slave core tasks, a hardware scheduler maintains hardware queues of three ready tasks, arrived tasks are inserted into the corresponding ready task queues according to a task priority, and the circumstance that the slave core task is starved is avoided by periodic priority promotion. The method effectively reduces the difficult in supporting an embedded heterogeneous multi-core system by a software system through the architectural support, lightens the burden of the main core scheduling and the slave core tasks management, and obviously increases the throughput of the slave core tasks. The method has more obvious effects under the conditions of numerous types and a great number of slave cores and complex scheduling algorithms.

The invention discloses a self-adjustment magnetorheological fluid single prop. The self-adjustment magnetorheological fluid single prop comprises a hydraulic positioning system and a magnetorheological fluid support system, wherein the hydraulic positioning system comprises a base (1), a positioning block (2), a hydraulic cylinder body (3), a piston column (12), a guide ring (17), a return spring (18), a sealing ring III (19) and a bottom hydraulic oil inlet (20); and the magnetorheological fluid support system comprises a magnetorheological cylinder body (4), a coil (5), an end cover (6), a pressure sensor (7), a support block (8), a cylinder pin (9), a sealing ring I (10), a separation magnetic ring (11), a piston column (12), an upper magnetorheological fluid injecting port (13), a magnetorheological fluid (14), a sealing ring II (15) and a connecting steel wire (16). The self-adjustment magnetorheological fluid single prop needs no pump station to provide great support, has no need to mount a valve base of a three-purpose valve, is lower in processing requirements on sealing pieces and inner surfaces of mobile columns, and can preferably and automatically adjust the support strength when support loads are suddenly changed.

The invention relates to a gob-side-entry-retaining supporting method, in particular to a gob-side-entry-retaining flexible roadside support and rigid entry-in support combined supporting method. The method comprises the steps that a row of point-anchor rope reinforced roadway top plates are arranged in a roadway in the tunneling period, a row of point-anchor rope reinforced roadway ribs are arranged in the side roadway rib of the non-working surface, and a row of constant-resistance anchor rope beam reinforced roadway top plates are arranged on the position a certain distance away from the side roadway rib of the working surface; and according to the data changing situation of the mine pressure in a retained roadway in the period of backstopping of the working surface and the showing situation of the roadway mine pressure, an entry-in supporting area in the retained roadway is divided into an advance supporting area, a lagging supporting area, a roadway-forming to-be-stable area and a roadway-forming stable area. According to the gob-side-entry-retaining flexible roadside support and rigid entry-in support combined supporting method, through the successful practice of cross heading under the 21702 working surface, an excessive coal safety pillar with the width of 5 m is recycled compared with tunneling of an original gob-side entry driving, the coal resource recovery rate is improved, a solid foundation is laid for popularization of the gob-side entry retaining technology in other mining-area working surfaces of the whole mine, and a brand-new thinking is provided for the excavation-replacement layout of the whole mine.

The invention discloses a non-chain-pillar exploitation method. The method comprises the following steps: tunneling a lower zone track lane along a reserved narrow chain pillar in a goaf after recovery of an upper zone working surface is ended; replacing the reserved narrow chain pillar with a filling body constructed along the edge of the goaf ahead a lower zone working surface after tunneling of a lower zone mining roadway is ended; gradually constructing the filling body in sections along with extending of the working surface until recovery of the lower zone working surface is finished; and sequentially circulating until coal mining of an overall area is finished. The support difficulty of gob-side entry driving is lowered, deformation of gob-side entry driving is effectively controlled, the goaf is isolated, and the recovery rate of coal resources is improved. The method is simple, safe, reliable and environmentally friendly, and has a useful effect.

The invention discloses a supporting component for a spatial large-aperture reflector. The supporting component is composed of a reflector supporting back plate, a supporting cylinder, a locking nut and a flexible gasket. The supporting cylinder is used for limiting the other five-dimensional freedom degree of the reflector except an axial direction, and the locking nut is used for fixing the axial freedom degree of the reflector. The supporting component has the advantages that the supporting component solves the problems that a reflector supporting structure in an original large-caliber off-axis three-mirror optical system is complex in design, high in assembly process requirement and the like. The supporting component is simple in structure, and does not need complicated assembly process and part repair. The problem that additional stress is brought to a reflector body due to cantilever support, temperature field change and an installation detection mode of a traditional large-caliber supporting structure is solved. The influence of supporting on the optical surface type can be effectively reduced. The structure is simple, so that the supporting component has practical engineering significance for the light weight of the spatial large-aperture optical load.

The invention relates to a construction method of a shed tunnel and steel corrugated plate combined type wind-snow prevention system. The construction method comprises the following steps that 1), carrying out construction preparation; 2), supporting and erecting a curved beam side mold and a curved beam bottom mold; 3), hoisting a beam reinforcement cage; 4), carrying out concrete pouring construction on an arc-shaped cross beam; 5), carrying out laying construction on filling wall body; 6), carrying out lintel construction on core columns and window holes; and 7), carrying out installation construction on corrugated plates. The construction method has the beneficial effects that the curved beam side mold and the curved beam bottom mold are convenient in supporting and erecting, mountingand positioning treatment, the template structure integrity is good, the template limiting strength is high, meanwhile, a template supporting system is prone to move on site and high in bearing capacity, and the construction difficulty of template supporting and erecting can be effectively improved; the reinforcement cage is convenient to hoist and connect, the reinforcement cage is prone to locate on site, and the damage of reinforcement cage on site hoisting to the reinforcement cage can be reduced; and arc-shaped cross beam concrete pouring is prone to control, and the concrete compactnessis convenient to control.

The invention provides a deep well small coal pillar gob-side entry retaining method based on roof lower key layer roof-breaking pressure relief, and relates to the technical field of coal mining. Ventilation and support in deep well gob-side entry retaining are improved. The deep well small coal pillar gob-side entry retaining method comprises the steps that roof geological conditions are determined, blasting parameters are determined according to the roof geological conditions, the roof-breaking pressure relief effects of lower key layers with different thicknesses are numerically simulated,and roof-breaking parameters of a roadway are determined; then excavating blast is conducted in the test roadway, and a displacement monitoring station, an anchor rod and an anchor cable stress monitoring station are arranged on surrounding rock in the roadway; and the supporting parameters are corrected, excavating blast is conducted in the gob-side entry retaining roadway, and supporting is conducted according to the corrected supporting parameters. According to the method, blasting is conducted on the side, deviating from solid coal, of a coal seam roof, stress transmission of the key layer is cut off at the lower key layer of the pre-split coal seam roof, thus high stress acting on small coal pillars and gob-side entry retaining is transferred, therefore the roadway environment is improved, and roadway maintenance is facilitated.

The invention relates to a frame shear wall column and masonry filler wall connecting structure and a construction method. A wall top supporting cover is arranged at the top end of a masonry wall; a guide side plate, a first position control bolt and a second position control bolt are used for controlling the position of a constructional column formwork; a side supporting bag and a pressure test body are used for controlling the pouring quality of a constructional column; a beam formwork position correcting bolt and an opposite-pull anchor bar are used for limiting a ring beam side formwork; a wall top connecting bar and a wall top connecting groove are arranged at the top of the masonry wall; the quality of a post-poured ring beam is improved through a beam top pressing plate; grouting sealing plates are arranged on the two sides of the post-poured ring beam in a supported mode respectively; an external grouting pipe is used for grouting a gap of the masonry wall to form a building block dense body; a joint side formwork at the joint of the inter-wall structural column and the masonry wall is in a broken line shape; the joint pouring quality is controlled through a dense bag; a first rib net and the constructional column formwork are synchronously arranged; a second rib net and the ring beam side formwork are synchronously arranged; and a third rib net and the joint side formwork are synchronously arranged. According to the invention, the formwork supporting difficulty can be reduced, the concrete pouring quality can be improved, and the performance of the connecting structure can be improved.

The invention relates to the technical field of electric power, and discloses an auxiliary supporting device for a 500kV electroscope, which comprises an insulating rod used for supporting the electroscope at a preset height and a plurality of auxiliary supporting rod used for supporting the insulating rod, wherein the length of each auxiliary supporting rod is larger than the length from the middle position of the insulating rod to the bottom end of the insulating rod, the top end of each auxiliary supporting rod is fixedly connected to the middle position of the insulating rod, and the auxiliary supporting rods are arranged around the insulating rod at uniform included angles so as to support the insulating rod on the ground. The auxiliary supporting device can replace a manual lifting mode, can be used for stably and reliably supporting the electroscope, lowers the supporting difficulty, improves the efficiency, improves the supporting stability, can accurately control the distance between the electroscope and an electrified part of 500kV equipment, and guarantees the accuracy of a measurement result.

The invention provides a transfer machine middle groove which comprises a first baffle, a first groove ledge, a middle plate, a bottom plate, a second groove ledge and a second baffle, wherein the bottom plate and the middle plate are fixedly connected with the first groove ledge and the second groove ledge respectively; the middle plate is positioned above the bottom plate; and the first baffle and the second baffle are fixedly connected with the first groove ledge and the second groove ledge respectively. The transfer machine middle groove further comprises a first section, a second section and a third section, wherein the second section is positioned between the first section and the third section; both ends of the second section are fixedly connected with one end of the first section and one end of the third section; and the first section and the third section are mutually parallel straight sections, but are not positioned in the same straight line. The invention further provides a transfer machine. As the bent middle groove is adopted, the transfer machine middle groove can meet short distance bending requirements and bent section fixity requirements; and in addition, the width of a transport gate road is reduced when the unloading distance between a scraper conveyer head and the transfer machine is ensured, therefore, the support difficulty and tunneling cost of the transport gate road are reduced.