4results about How to "Solve the collapse" patented technology

The utility model relates to the technical fields of light source disclose a big area light source device, including base, lamp plate, diffusion plate, a plurality of adapter seat and a plurality of tensioning piece, the lamp plate is fixed on the base, the diffusion plate is set up in the lamp plate one side of back to the base, the light emitting path of lamp plate is towards the diffusion plate, each edge of diffusion plate all is fixed with adapter seat, the base is provided with limit groove on at least two opposite inner sides, and at least two opposite adapter seat is embedded to two limit groove one to one, and the width of limit groove and the thickness of adapter seat are adapted, each outer side of base all is connected with tensioning piece, and the tensioning piece is connected with corresponding one adapter seat and exerts the force of pointing to the outside to adapter seat, the application solves the technical problem that the diffusion plate of appearance bigger light source device collapses and leads to the poor light emitting uniformity.

The utility model relates to an engineering construction foundation pit support structure, and belongs to the technical field of building construction. Comprising a left side pile column and a right side pile column which are located on the two sides of a foundation pit, a left side mounting frame is detachably mounted on the left side pile column, and a left side soil retaining plate and a left side outer baffle are detachably mounted at the inner end and the outer end of the left side mounting frame correspondingly; and a right side soil baffle and a right side outer baffle are detachably mounted at the inner end and the outer end of the right side mounting frame correspondingly. The foundation pit support structure has the advantages that the soil retaining plates and the outer baffles are arranged on the inner sides and the outer sides of the piles respectively, the soil retaining plates can solve the problem that according to an existing foundation pit support structure, the edge of a foundation pit is prone to collapsing, the outer baffles can prevent pedestrians from getting close to the foundation pit, and the safety coefficient of construction is improved; the mounting frame and the pile column are detachably connected, transportation and on-site assembly are facilitated, the soil retaining plate, the outer baffle and the mounting frame are detachably connected, and the assembly layout can be flexibly adjusted according to construction requirements.

The application discloses an ultrasonic vibration and laser-assisted combined ceramic matrix composite material drilling device and belongs to the field of composite material processing.The device comprises a laser, a main shaft laser channel, a compressed air channel, an optical path adjusting device, an ultrasonic vibration device, a fixing device, a drill bit and the like, wherein the laser is used for emitting laser light, the laser light is incident to the optical path adjusting device through the main shaft laser channel, the optical path adjusting device and the fixing device ensure that two beams of laser light emitted after light splitting are always irradiated by a drill bit through hole on the drill bit, and the function of heating and softening workpiece material is realized; the ultrasonic vibration device makes the end of the drill bit output the main shaft rotation movement and simultaneously output a longitudinal-torsional composite ultrasonic vibration with a certain amplitude, realizes an intermittent contact cutting drilling mode, and reduces cutting force and torque; compressed air blows away cutting chips through the compressed air channel and the drill bit through hole on the drill bit; longitudinal-torsional composite ultrasonic vibration, laser-assisted processing and drilling are organically combined, the damage of the air outlet and inlet is reduced, and the processing quality is improved.

According to the technical scheme, the underground small coal pillar reinforced roadway protection device comprises a fixing frame and a fixing base, supporting plates are installed on the two sides of the top of the fixing frame, a positioning column is installed in a gap between the supporting plates on the two sides, a protection plate is installed on the outer surface of the positioning column, a reinforcing column is installed on the portion, close to the bottom, of the fixing frame, and the reinforcing column is connected with the fixing base. A buffer seat is mounted at the top of the reinforcing column, a supporting seat is mounted in the buffer seat, connecting seats A are mounted on the two sides of the top of the supporting seat, and hydraulic dampers B are mounted at the tops of the connecting seats A through positioning pins. The underground small coal pillar reinforced roadway protection device solves the problems that when an existing roadway protection mechanism supports a small coal pillar, the impact force buffering effect is limited when coal briquettes fall, the roadway protection mechanism is prone to deformation and damage in the long-time using process, and coal mining safety is affected, the deformation and damage probability of the roadway protection mechanism is reduced, and the safety of coal mining is improved. Therefore, the mining safety of the coal mine is improved.