44results about How to "Strong engineering feasibility" patented technology

The invention discloses a building trough vibration isolator. The vibration isolator comprises a vibration isolator body. The vibration isolator body is arranged in a trough which is reserved between one side of a building and the side wall of a foundation pit. The vibration isolator body comprises a waterproof layer, an elastic damping layer, a concrete layer and a rubber base plate. The waterproof layer, the elastic damping layer and the concrete layer are arranged in the trough and cling to the trough. The rubber base plate is arranged between the concrete layer and soil on the bottom of the foundation pit. By means of the trough space design of the vibration isolator, the structure design is reasonable, the engineering implementation is easy and the vibration which transmits from the side wall of the foundation pit to the building foundation can be effectively isolated under the premise of guaranteeing the safety of the building.

The invention discloses a bio-remediation method of hexachlorobenzene-contaminated soil, which comprises the following steps: preparing soil particles; adding deoxidized distilled water and a small-molecular organic acid nutrition source; regulating the initial pH value of the reaction system; adding nitrogen to create an oxygen-free environment; and performing an anaerobic degradation reaction by use of indigenous microorganisms in the soil, etc. According to the characteristics of strong vitality, adaptability and decomposition capacity of the indigenous microorganisms in the environment contaminated for long time, the method disclosed by the invention makes full use of the anaerobic indigenous microorganisms in the hexachlorobenzene-contaminated soil and directly performs quick remediation on the hexachlorobenzene-contaminated soil by use of the indigenous microorganisms in the soil under the condition of adding the small-molecular organic acid as a nutrition source. The method is simple and convenient to operate, the reaction conditions are mild, the operation cost is low, secondary pollution is avoided, the reaction time is short, and the engineering feasibility is high. The removal rate of hexachlorobenzene in the remediated contaminated soil is close to 60%, and thus the harm to the environment and human body caused by the hexachlorobenzene-contaminated soil is greatly reduced.

The invention discloses a periodic microstructure noise reduction device, a noise suppression test system and method. The test system includes an anechoic wind tunnel, a noise sensor and a model test piece; the model test piece adopts a periodic microstructure noise reduction device, Installed in the anechoic wind tunnel; the periodic microstructure noise reduction device includes a reference cylinder, on which a radial protruding structure is periodically arranged in the axial direction, wherein the diameter of the reference cylinder is D, the length of the reference cylinder is L, the setting period is S, the outer diameter of the radially raised structure is A, and the thickness of the radially raised structure is B; a plurality of the noise sensors are based on the center of the model test piece as The center of the circle is arranged in an arc-shaped array along the airflow direction and installed in the anechoic wind tunnel. The test system proposed by the present invention collects the noise generated by the air flow on the model through multiple noise sensors, and analyzes the noise single-tone signal and the change of the overall broadband signal, thereby providing a research basis for noise suppression.

The invention discloses installation arrangement of a satellite-borne magnetometer, comprising solar wings connected with a satellite body and a solar wing sailboard, wherein a bracket for installing the magnetometer is arranged at the outer side of the solar wing. The satellite body is connected with the solar wing sailboard through a hinge; the solar wing sailboard is connected with the bracketof the magnetometer through a hinge; and probes of the magnetometer are respectively fixed on the bracket of the magnetometer through bolts. The invention has simple theory and engineering feasibility, meets the technical requirements of specially using an extension mechanism to ensure that a residual magnetic index at installation position of the two probes of the magnetometer is less than 0.5 nT, optimizes the whole satellite arrangement design, saves weight for the whole satellite design, and avoids the design of complex extension mechanism. The invention has the advantages of shortening development cycle, saving development cost and the like.

The invention relates to car seats, in particular to a car seat with an automatic folding and turning function. The car seat mainly comprises a backrest tube framework (1), a backrest and cushion linkage unlocking mechanism (2), a cushion tube framework (4), a turning mechanism (6) and a cushion turning mechanism (7). The backrest tube framework (1) is connected with the cushion tube framework (4). The backrest and the backrest and cushion linkage unlocking mechanism (2) are disposed on the backrest tube framework (1). The turning mechanism (6) is disposed on the cushion tube framework (4). The cushion turning mechanism (7) is disposed on the cushion tube framework (4). The car seat has the advantages that the car seat satisfies the requirements of national mandatory laws and regulations, get on and get off convenience of passengers is increased, the safety performance level of a whole car is increased, onerous operation steps are eliminated, performance level of the whole car is increased, user experience is increased, and problems of seat loosening and abnormal sounds are solved by means such as backrest coil spring assisting design.