43results about How to "Relaxed conditions of use" patented technology

The invention relates to a minitype piling device, which comprises a base, a frame, a windlass and a pile hammer, wherein a steel wire rope of the windlass is connected with the pile hammer through a guiding pulley on the upper part of the frame, the frame is lower than 2.20 m, and a pile hammer guiding mechanism is arranged in front of the frame. The pile hammer guiding mechanism comprises an overground guide rod arranged on the upper part of the base and an underground guide rod arranged on the lower part of the base, a hanging ring is arranged on the top of the pile hammer, a pothook provided with a long control handle is matched with the hanging ring, and the end part of the steel wire rope of the windlass is hinged with the middle part of the pothook body. Aiming at the base sedimentation problem of silt groundsill or soft soil groundsill equipment of transformer substations, the minitype piling device is developed under the requirements that limited safety height is 2.2 m and the power is not cut off, and breaks through a forbidden zone that piling is difficult in a running transformer substation in a special construction environment when basic reinforcement is carried out. The minitype piling device is easy to operate, and has small volume and favorable adaptability to the reinforcement and correction of the base sedimentation of industrial production devices.

The invention belongs to the field of denitration catalyzing, and provides a gamma-MnO2 loaded mixed non-metal ore clay low-temperature denitration catalyst and a preparation method thereof. According to the catalyst, mixed non-metal ore clay is adopted as a carrier, an active component gamma-MnO2 is loaded, and the gamma-MnO2 loaded mixed non-metal ore clay low-temperature denitration catalyst is prepared. The catalyst is simple in preparation process, the prepared catalyst can achieve the effects of increasing the specific area, the pore volume and the aperture, and the strength of the catalyst is increased, so that the catalyst is easy to form and convenient to mount. In addition, the non-metal ore clay is low in price, and therefore the cost of the catalyst is greatly reduced.