4results about How to "Advance smoothly" patented technology

The utility model discloses a liquid cooling unit propelling slide plate assembly solves the technical problem that liquid cooling unit is difficult to carry in long and narrow cabinet body, and propelling slide plate assembly includes support main part, pulley set and adjusting structure, the both sides of support main part are provided with inclined track groove, and the axle of pulley set is connected with large pulley through track groove, and support main part side surface is equipped with a plurality of small pulleys, adjusting structure drives pin through handle structure, and in turn drives connecting horizontal shaft, connecting vertical shaft and wheel connecting axle, makes the axle along inclined track groove remove, realizes the height adjustment of pulley set from the ground, the utility model discloses through the pulley cooperation inclined track groove of big and small, can adjust the height from the ground of liquid cooling unit flexibly, realizes the accurate positioning and safe carrying of propelling slide plate assembly drive liquid cooling unit in liquid cooling cabinet body, and effectively solves the installation problem of heavy liquid cooling equipment.

The invention discloses a preparation method of a loose body based on an optical fiber preform, and relates to the technical field of optical fiber processing. The method comprises the following steps: SS01, depositing a barrier layer by adopting an MCVD (modified chemical vapor deposition) process; sS02, multi-time deposition of a loose core layer is conducted through the MCVD deposition technology; sS03, preparing a doping solution containing rare earth ions and aluminum ions; sS04, off-line solution doping is carried out, and a vacuum pressurization alternate driving mode is adopted in the doping process. The porosity of the loose core layer is gradually reduced from inside to outside, a permeation resistance gradient is formed, the high porosity of the inner layer provides sufficient permeation channels, the low porosity of the outer layer plays a role of a barrier layer, rare earth ions are prevented from being adsorbed by the surface layer too early and exhausted in the doping process, and the rare earth ions are prevented from being adsorbed by the surface layer too early and exhausted through the forced permeation effect of vacuum pressurization alternate driving. Dissolved gas is discharged through vacuumizing operation after each stage of pressurization, space is vacated for next-stage permeation, and the rare earth ions are evenly distributed in the radial direction of the loose body.

The utility model provides a kind of plastic buckle with self locking bolt, belong to plastic buckle technical field, including fastener, the inside of fastener is provided with buckle assembly, the buckle assembly includes elastic plate, contact head and round corner one, the one side of elastic plate is fixedly installed with the inner wall one side of fastener, the front of contact head is fixedly installed with the back of contact head.The utility model is guided elastic plate to occur elastic deformation by the slope cooperation of round corner two and round corner one, realize the smooth sliding of clamping block, and the assembly process is simple and labor-saving, when the contact head is aligned by clamping groove, the contact head is accurately clamped into clamping groove using the rebound characteristics of elastic plate, the effect of preventing loosening can be achieved, the structure that round corner one is set on both sides of contact head is convenient to separate by again pressing elastic plate when disassembling, realize the convenient detachable function, and then overall structure combines buckle connection quickness and bolt anti-loosening reliability.

This invention proposes a ground cavity detection device and system. The detection device includes at least one set of transmitting and receiving devices installed on the inner side of the shield shell of a tunneling machine. Both the transmitting and receiving devices have hydraulic cylinders, connecting cylinders, and telescopic columns. The two ends of the connecting cylinder are connected to the hydraulic cylinder and the inner side of the shield shell, respectively. The end of the piston rod inside the hydraulic cylinder is located inside the connecting cylinder and connected to the telescopic column. The movement of the piston rod can drive the telescopic column to slide within the connecting cylinder, allowing the end of the telescopic column to extend outward or retract inward from the telescopic hole on the shield shell. The telescopic column of the transmitting device contains a sound wave transmitting module, and the telescopic column of the receiving device contains a sound wave receiving module. This invention overcomes the lack of a technical solution for detecting geology above the tunnel boring machine (TBM), achieving the purpose of detecting ground cavities. Based on the detection results, the TBM parameters can be adjusted in a timely manner to avoid the risk of ground collapse or subsidence, ensuring stable construction.