59results about How to "Good anti-shock effect" patented technology

The invention provides a water screen for rapidly attenuating shock wave in pits, which is positioned in pits at an exit and entrance of civil air defense engineering. The water screen comprises a row of suspension hooks, a water injection faucet and a flexible water screen pad, wherein, the suspension hooks are pre-embedded in coated concrete on the top of the pits at the exit and entrance of the civil air defense engineering and are arranged along the width direction of the pits at the exit and entrance of the civil air defense engineering; the water injection faucet is arranged on the coated concrete beside the suspension hooks; and the upper part of the flexible water screen pad is equipped with a row of suspension holes, the flexible water screen pad is hung on the suspension hooks through the suspension holes and comprises a cushion with a certain thickness and water poured into the cushion, the cushion is made from a flexible high-strength fiber cloth, and tie strips are connected inside the cushion and between the front face and the rear face of the cushion. The water screen has the characteristics of being simple, convenient and economical, high in war readiness benefit and good in wave resistance effect; and by utilizing the water screen, repeated attack of the explosive shock wave can be resisted, thus the safety of the civil air defense engineering can be greatly improved, and the personnel safety and property safety are well protected.

The invention belongs to safety support equipment for coal mines, and particularly relates to a mine-used expansion-type anti-shock single hydraulic support, which includes a single hydraulic support (5) and a steel plate (1). A diameter protector (2) with the same shape as the expansion tube insertion groove (2-1) and the single hydraulic support (5) is installed on the diameter boss, and the closed inner top of the expansion sleeve (3) is connected to the The expansion tube (2) is connected at the top, and the outer periphery of the expansion sleeve (3) is threadedly connected with the single hydraulic support (5). An anti-tilt sleeve (4) is installed, and the steel plate (1) is fixed on the top of the expansion sleeve (3). , The expansion-diameter anti-shock single hydraulic support for mining solves the problem that the dynamic response time of the overflow valve is not enough when the rock impact occurs, and the overflow valve is too late to open, and eliminates or reduces the bending of the single hydraulic support when the impact rock pressure occurs. In the case of fracture and cylinder explosion, it is convenient to replace the expansion tube parts.

The invention relates to a tunnel axial shock absorption and energy absorption device and a tunnel lining structure having the device. The tunnel axial shock absorption and energy absorption device comprises: a lining for connecting an energy absorption body and a lining divided into adjacent ones along the tunnel axial direction Two connecting pieces of the main structure; wherein, the energy absorbing body is set to be rigid along the tunnel radial direction, and can generate relative displacement along the tunnel axial direction for absorbing axial energy. The tunnel axial shock absorption and energy absorption device provided by the invention does not impair the overall ability of the tunnel lining to bear static load due to the rigidity of the tunnel in the radial direction; the tunnel has certain flexibility in the axial direction, which can improve the axial tension and compression of the tunnel The seismic capacity of deformation, and can absorb the phase-derived stress and relative displacement generated by the earthquake, and has a good anti-shock effect, thus ensuring the safety of the tunnel lining structure during the earthquake; and the device is easy to install and easy to replace.