7results about How to "Safe passage" patented technology

The invention relates to a tunnel ponding early warning method and device, computer equipment and a storage medium. The method comprises the steps that at least two first flow detection units are arranged at an inlet and an outlet of a tunnel, at least one second flow detection unit is arranged at a water outlet of the tunnel, local water accumulation threshold values of a plurality of water accumulation sensitive areas are determined based on historical water accumulation data, and the local water accumulation threshold values are arranged according to the threshold values to obtain a threshold value distribution sequence; dividing the threshold distribution sequence into a first sequence and a second sequence based on a preset proportion, and determining a first global threshold by a local ponding threshold at the boundary of the first sequence and the second sequence; calculating the inlet and outlet flow difference according to the first flow data and the second flow data, and further determining the water accumulation amount; and adjusting a second global threshold value according to the ponding risk index, and starting a corresponding risk early warning strategy when the ponding amount exceeds the first global threshold value or the second global threshold value. Low-cost and high-precision tunnel ponding monitoring is realized based on simplified sensing data, and the safety of tunnel passage is improved.

The invention provides a railway point switch indication gap real-time monitoring system and a monitoring method thereof, and relates to the technical field of railway signals. The railway switch machine indication gap real-time monitoring system comprises a camera; the lower computer is used for acquiring the scale images, acquired by the image acquisition module, of the outer side of the switch machine on the indication rod, and the scale images of the outer side of the switch machine on the indication rod comprise standard position scale reading images and real-time scale images of the outer side of the switch machine on the indication rod; taking a scale image on an indication rod on the outer side of the switch machine when the reference position is positioned and the reference position is reversed as a standard position scale reading image, obtaining a standard position scale reading, obtaining a scale real-time reading, and calculating to obtain an actual gap offset; and the upper computer is used for receiving the actual gap offset and comparing the actual gap offset with a set threshold value. The system monitors the indication gap of the railway switch machine in real time so as to ensure normal operation of a railway signal system and safe passing of a train.

This invention relates to the field of trestle bridges, specifically to a trestle bridge for construction across railway lines and its usage method. The trestle bridge includes a trestle bridge module, approach bridge modules, a traveling module, and a support and guide module. The trestle bridge module is erected within a reserved passage area on the external track line. The approach bridge module is mounted on one side of the trestle bridge module via a rotating shaft and is pulled by the trestle bridge module. Two sets of traveling modules are installed on both sides of the ends of the trestle bridge module. The support and guide module is erected on the side of the reserved passage area facing the track. The hydraulic motor in the traveling module, in conjunction with the traveling wheels, drives the trestle bridge module to move rapidly along the guide roller seats of the support and guide module. Combined with the folding and unfolding functions of the approach bridge module, this enables rapid erection and dismantling of the trestle bridge, significantly shortening construction preparation time and dismantling cycle, avoiding prolonged interruptions to railway operations, and effectively solving the problems of long construction cycles and dismantling interference with normal railway operations caused by traditional trestle bridges.

The invention belongs to the technical field of multi-scene safety monitoring, and relates to a multi-scene intelligent safety monitoring system. According to the method, the meteorological scene, the load scene and the water scene where the target monitoring object is located currently are determined, potential safety risks can be recognized in advance, basic support is provided for subsequent analysis, and the safety risk of the target monitoring object can be recognized by determining the suitable safety reference values of the health information parameters corresponding to the scene where the target monitoring object is located currently. Whether the structure of the target monitoring object is in an abnormal stress or adverse environment state or not is found in time, a basis is provided for formulating an accurate maintenance plan, and potential safety hazards can be found in time by analyzing the health coefficients of the main beams, the bridge floor and the bridge piers of the scene where the target monitoring object is located currently. And traffic control or maintenance measures are taken, so that accidents are avoided, the target monitoring object can be always kept in a relatively good health state, and the service life of the target monitoring object can be effectively prolonged.

The utility model relates to the technical field of wharfs, in particular to a shore connecting structure for a wharf approach bridge, which comprises a pile foundation, a movable plate, a connecting plate, a supporting plate, a locking component and a driving component, the pile foundation is connected with a bridge abutment, the bridge abutment is connected with a supporting plate, and a pavement layer flush with a mainland pavement is arranged on the supporting plate. One end of the movable plate is inserted into the abutment and is in sliding connection with the abutment; the movable plate is rotationally connected with the approach bridge plate; the connecting plate is rotationally connected with the approach bridge plate, and the connecting plate is parallel to the movable plate. The supporting plate is in sliding connection with the pile foundation and connected with the connecting plate. The locking assembly is connected with the supporting plate and the pile foundation. The driving assembly is connected with the pile foundation and is in driving connection with the supporting locking assembly so as to achieve locking and unlocking of sliding of the supporting plate. The device can be self-adaptively adjusted when the wharf settles, is also suitable for a floating platform type wharf, and is stable in structure and convenient to operate.

The utility model belongs to the technical field of roadblocks, and particularly relates to a municipal roadblock which comprises four inner supporting column rods which are symmetrically distributed in pairs, hexagonal protective handrails are arranged at the top ends of the four inner supporting column rods, and a plurality of protruding type pointing arrows which are distributed in a circulating mode are fixedly connected to the top ends of the hexagonal protective handrails. A blind sidewalk covering pad is arranged on one side of the two inner supporting column rods located on the same side, a pressure sensor is embedded in the blind sidewalk covering pad, and a voice broadcast warning indicator is arranged between the two inner supporting column rods located on the same side. The blind sidewalk covering pad, the pressure sensor and the voice broadcast warning indicator can prompt the blind when the blind gets close to the position of a well mouth, the hexagonal protective handrail with the larger surrounding and blocking range is supported by means of the inner supporting column rod located on the inner side, and therefore the blind close to the well mouth can be intercepted more safely; the blind person is prevented from being stumbled by a rod frame structure of the device, and the blind person is guided by means of the hexagonal protective handrail and the protruding type pointing arrow.