9results about How to "Guaranteed normal expansion" patented technology

The invention belongs to the technical field of high-altitude operation, and particularly relates to a high-altitude operation machine and an anti-collision device thereof, the anti-collision device comprises a guide pipe, a collision pipe and a sealing plate, the collision pipe is movably arranged in the guide pipe in a penetrating mode, and the sealing plate detachably covers the upper end face of the guide pipe. The high-altitude operation machine comprises a driving mechanism and an operation mechanism, the operation mechanism is used for executing specific operation functions, and the driving mechanism is used for driving the operation mechanism to move. The guide pipe is fixedly installed on the operation mechanism, the upper end of the collision pipe is higher than the operation mechanism, and in the process that the driving mechanism drives the operation mechanism to move, if the operation mechanism is too close to an obstacle, the collision pipe collides with the obstacle, and therefore the driving mechanism is controlled to stop driving. In the long-term use process, the foreign matter can enter the guide pipe, the foreign matter in the guide pipe can be conveniently removed by disassembling the sealing plate, the foreign matter is prevented from being accumulated in the guide pipe, and therefore normal movable fit of the collision pipe and the guide pipe is guaranteed.

The utility model relates to the technical field of plastic partition, disclose a plastic partition with buffer structure, including roof one, the one side of roof one is connected with roof two with sliding, the bottom fixed connection of roof one has buffer mechanism, the bottom fixed connection of buffer mechanism has bottom, the outer wall fixed connection of bottom has splicing mechanism, splicing mechanism includes fixed base, the outer wall rotation is connected with lock shell of fixed base, the one side rotation is connected with lock block of fixed base, the outer wall of lock shell has set up through -hole, the outer wall rotation is connected with two fixed blocks no. Two the inner wall fixed connection of fixed block no. Two all has the connecting column. In the utility model, when roof one and roof two are impacted, the spring is extruded downwards, the spring is influenced by the friction of rubber ring, the rebound speed is slowed down, the buffering effect is enhanced, the movable range of roof is limited by limit groove no. One and protruding block, and the loss of goods is reduced.

The utility model discloses a jack protection structure for a coal mine hydraulic support, relates to the technical field of jack protection, and adopts the technical scheme that the jack protection structure for the coal mine hydraulic support comprises a base, a bottom adjusting beam is mounted on the side surface of the base, a hinge block is mounted on the bottom adjusting beam, and a bottom adjusting jack is hinged to the base; a bottom adjusting jack is hinged to a bottom adjusting beam, a piston rod head of the bottom adjusting jack is hinged to a base, a cylinder bottom of the bottom adjusting jack is hinged to the bottom adjusting beam, an installation block is installed on the side face of the base, and the installation block is hinged to a pull-back sliding jack. And meanwhile, interference between the bottom adjusting beam and the pull-backward sliding jack pipeline can be avoided, so that stretching and retracting of the pull-backward sliding jack are ensured.

The utility model belongs to the technical field of greenhouses, and relates to a greenhouse capable of removing accumulated snow on the top of the greenhouse in a knocking mode, the greenhouse is in a closed state during knocking snow removal, and the greenhouse comprises a greenhouse main body and a knocking device; wherein a detonation framework is arranged in the greenhouse body in the longitudinal direction, a plurality of detonation points are arranged on the detonation framework at intervals, the detonation devices are installed and fixed to the detonation points, explosives in the detonation devices give out vibration brittle sound at the burning and explosion moment, and hot gas released at the burning and explosion moment acts on the greenhouse film. According to the greenhouse, the detonation device in the greenhouse is ignited, hot gas released by the detonation device at the burning explosion moment acts on the greenhouse film, the greenhouse film is instantly expanded and then is instantly restored to the original shape, accumulated snow on the greenhouse film is shaken off, the purpose of removing snow is achieved, and the greenhouse has the advantages that the snow removing effect is good, cost is low, and the service life of a greenhouse framework cannot be affected.

This utility model belongs to the technical field of gas generators, and specifically relates to a support structure for gas generators. The support structure for gas generators includes a mounting base, characterized in that: a front support flexible plate is fixed to the front end of the mounting base, a front casing is fixed to the top of the front support flexible plate, a main support flexible plate is fixed to the rear end of the mounting base, a main support column is fixed to the top of the main support flexible plate, a column support pin is installed on the main support column, the column support pin is connected to a tie rod ring, a tie rod is connected between the tie rod ring and the front casing, and the tie rod ring is connected to a load-bearing ring through a tie rod ring support pin. The beneficial effects of this utility model are: this support structure for gas generators, while ensuring effective support and fixation, can guarantee expansion in all directions without generating thermal stress. It can effectively transmit axial force and torque between the stator and rotor. Furthermore, it facilitates adjustment of the angle, gap, and preload during installation.

This invention discloses an adjustable endotracheal tube with inner and outer double tubes. The adjustable endotracheal tube includes an inner guide tube and an outer expansion tube arranged internally and externally. The inner guide tube includes an angle adjustment tube and an axial extension tube connected in axial sequence. The tail end of the axial extension tube is provided with an adjustment mechanism for adjusting the bending angle of the angle adjustment tube. The outer expansion tube includes an inner layer and an outer layer arranged internally and externally, which are connected to form a tubular air bladder. The tail end of the tubular air bladder is provided with an inflation / deflation port. In this invention, the outer expansion tube contracts within the outer wall of the inner guide tube to ensure passage through the airway. After passing through the airway, the expansion of the outer expansion tube ensures the expansion of the ventilation channel, improving ventilation efficiency. This invention uses the outer expansion tube as an air bladder, which easily conforms to the contours of the airway, achieving adaptive airway matching.

The utility model discloses classified storage equipment for logic board testing, which relates to the technical field of logic board processing and comprises storage cabinet main bodies and a connecting box, the connecting box is positioned on the inner sides of the two storage cabinet main bodies, loading cabinets are uniformly arranged on the storage cabinet main bodies, and bottom bearing strips are uniformly arranged at the bottoms of the loading cabinets. An arc-shaped plate is arranged on the inner side of the loading cabinet and located above the bottom bearing strip, a partition plate is fixedly arranged in the middle of the loading cabinet, and a connecting rod is arranged on the arc-shaped plate. Bottom bearing strips evenly arranged at the bottom of the loading cabinet can bear the logic board under the condition that air circulation in the whole storage cabinet body is guaranteed, and an arc-shaped plate arranged on the inner side of the loading cabinet and located above the bottom bearing strips is used for guiding air fed into the storage cabinet body by a dehumidifier, so that in the flowing process of the air, the air flow in the storage cabinet body is more uniform. And the logic boards in each loading cabinet can be blown by the air flow, so that the dryness of the logic boards is ensured, and the phenomenon of moisture is avoided.

The utility model provides a kind of telescopic guard board, it is related to guard rail board technical field to solve the problem of poor deformation ability of protective plate in prior art, the telescopic guard board includes first connecting plate, second connecting plate and telescopic plate, the first connecting plate and the second connecting plate are respectively connected in the left and right sides of the telescopic plate and are respectively connected with the crash barrier wall of both ends, the telescopic plate can be telescopic along transverse direction and adjust the distance between the first connecting plate and the second connecting plate.The telescopic guard board of the utility model has good deformation ability, guarantees bridge crash barrier wall beautiful telescopic, so that it can be adapted to curve, slope and the like, applied to mountainous road, bridge and other complex terrain.

The utility model discloses a boiler bottom water seal assembly, and relates to the technical field of boiler water seal tank optimization. The water seal device comprises a water seal inserting plate arranged on a water cooling wall tube of the dry bottom hopper, the water seal inserting plate extends into the liquid level of a water seal tank from the top surface of the water seal tank, a dust blocking mechanism is installed on the inner side of the water seal inserting plate, the dust blocking mechanism is provided with a flexible steel plate, the bottom side of the flexible steel plate abuts against the top surface of the inner side of the water seal tank, and the bottom side of the flexible steel plate abuts against the water cooling wall tube of the dry bottom hopper. The width of the flexible steel plate is not less than that of the inner side of the water seal tank; the problem that dust accumulation in the water seal tank is aggravated due to the fact that steam generated by the water seal tank adsorbs fine dust is solved.