51results about How to "Meet the actual needs of the site" patented technology

The invention discloses a composite heat insulation type furnace face prefabricated block for an aluminum anode carbon roasting furnace flue wall. The composite heat insulation type furnace face prefabricated block comprises a prefabricated material pouring body which is of a cuboid structure and is provided with a fire jet opening in the middle, bearing nets and heat insulation layers, wherein the bearing nets and the heat insulation layers are sequentially and horizontally embedded into the portions, located on the two sides of the fire jet opening, of the upper portion of the prefabricated material pouring body from top to bottom. L-shaped reinforcing frames are pressed on the edge of the periphery of the upper surface of the prefabricated material pouring body in a buckled manner. The composite heat insulation type furnace face prefabricated block is a composite body composed of refractory castable, the L-shaped reinforcing frames, the bearing nets, the heat insulation layers and other materials, and the requirements for fire resistance, collision prevention, heat insulation performance, load-bearing performance and anti-skidding performance of the furnace face prefabricated block for the flue wall are met; and the refractory castable sintered bauxite with the high strength and high performance is adopted as a host material for the furnace face prefabricated block, so that the finished prefabricated block has high strength, micropores and the medium or high specific gravity and is high in performance. A manufacturing method of the composite heat insulation type furnace face prefabricated block is simple, the process parameters are easy to control, and high-temperature sintering is not needed; and the pouring material formula is changed for different portions, and the field actual requirements of different portions of the prefabricated block are met.

The present invention relates to a quantitative solution to tension replacement of gob-side roadway in extra-thick coal seams. 1) The time T of goaf-side roadway is determined by taking the basic roof subsidence as an index. 1 ,2) Taking the stress change of the roadway surrounding rock as the time index, determine the reasonable excavation time T 2 ,3) Determine the reasonable excavation time T of the gob-side roadway. The present invention obtains the basic roof subsidence and overlying rock movement stability time on the basis of fully considering the difference between coal and rock mass, which is more in line with the actual site and the result is more accurate; the stress change of the surrounding rock of the roadway is introduced as an additional index to form a The double-index system of the excavation time of gob-side roadway; 70% of the maximum basic roof subsidence value and 80% of the maximum stress are used as the evaluation index of roadway excavation time, and the weight ratio of the two is determined according to the specific geological conditions. The excavation time of the gob-side roadway can not only ensure the safety and stability of the surrounding rock of the gob-side roadway, but also effectively reduce the time of gob-side roadway excavation in extra-thick coal seams, and ensure the normal replacement of mining.

The present invention provides a fully automatic auxiliary branch-picking mechanism and branch-picking method for tree barrier cleaning, comprising: a grapple hook assembly, a host assembly and an insulating operating rod; the first grapple shell is fixed on the first claw hook inner lining; the second The grapple shell is fixed on the second grapple lining; the lifting platform is fixedly connected with the host assembly through the connecting rod; the first grapple shell is hinged with the host assembly through the first connecting piece; the second grapple shell is connected through the second connecting piece It is hinged with the host assembly; the first claw hook lining and the second grab hook shell are respectively hinged with the lifting platform; the host assembly is provided with a driving device for controlling the opening and closing of the grab hook assembly; The technical problem of stuck broken branches is solved, and at the same time, the safety problem of using non-specialized tools to cause high-altitude fall to injure the obstacle removal personnel is solved. The present invention plans obstacle-clearing lines according to needs, and sets obstacle-clearing positions according to actual conditions, and can also perform patrol inspection on overhead lines to ensure timely processing of obstacle-clearing work.

The invention discloses a large-scale inclined roll shaft fracture welding device for a ring rolling mill. Fixing structure tooling is used for pairing and fixing the broken part of the inclined roller shaft and controlling the deformation amount during the welding process; and the heating tooling is used for heating the broken part of the inclined roller shaft. The invention also discloses a fracture welding repairing process for a large-scale inclined roll shaft of a ring rolling mill based on the welding device. Through the implementation of the present invention, a large amount of maintenance time can be shortened, the maintenance cost can be reduced, and the failure rate and downtime loss can be reduced, thereby providing a guarantee for rational production.

The invention discloses a water tank crack welding device for an electric reciprocating pump body for dephosphorization by wheels. The fixed draw plate on the groove surface and the fixed steel plate connected to the back side and the two fixed pull plates on the groove surface are respectively detachably connected and fixed upper pressing plate. The present invention also provides a repair process for the water tank crack welding device of the wheel dephosphorization electric reciprocating pump body. Aiming at the problems existing in the background technology, the present invention provides a repair process for the wheel phosphorus removal electric reciprocating pump body water tank crack welding device craft. The application of the present invention can quickly implement and complete the electric reciprocating cast iron pump body water tank crack welding repair, reduce procurement and maintenance costs, reduce long-term shutdown losses, and provide a guarantee for the reasonable assembly and rolling of steel to produce various domestic and foreign wheels.