6results about How to "Guaranteed force" patented technology

The utility model relates to the technical field of hydraulic pump machining, in particular to a press fitting station. A press-fitting station comprises a pressing head which is horizontally and slidably assembled and is driven to move by a first driving part; the supporting plate is horizontally assembled in a sliding mode, the supporting plate is driven by a second driving piece to move, and the supporting plate and the pressing head are oppositely arranged in a spaced mode; and the bearing table is used for bearing a workpiece, the bearing table conveys the workpiece to a press-fitting position between the pressing head and the supporting plate, and during press-fitting, the pressing head pushes the workpiece to be pressed on the supporting plate in a sliding mode. The technical problems that in the prior art, a bearing in an intermediate is low in assembling efficiency and poor in precision are solved.

The invention provides lifting equipment for auxiliary cooperation of a guide cylinder of a crystal growth machine and a thermal field, the lifting equipment comprises a plurality of lifting mechanisms which are arranged in the circumferential direction of a furnace cover at equal intervals, and each lifting mechanism comprises a fixed seat and a lifting assembly; the fixed seat is fixed on the furnace cover; the number of the lifting mechanisms is at least three. The lifting assembly comprises a driving device, an adapter block, a weighing sensor connected with the adapter block and a lifting rod. The lower end of the weighing sensor is connected with the lifting rod; the lower end of the lifting rod penetrates through the furnace cover and is fixedly connected with the guide cylinder; the driving device is fixed on the fixing seat and is used for driving the switching block to drive the weighing sensor, the lifting rod and the guide cylinder to reciprocate up and down, so that the guide cylinder is close to the thermal field to be matched with the thermal field or far away from the thermal field. The lifting equipment provided by the invention is adaptive to all crystal growth machines with lifting guide cylinders, also saves manpower, simplifies the measurement operation process, and has relatively good practical value and technical improvement significance.

The utility model provides a table leg assembly of an electric lifting table, which belongs to the technical field of electric lifting tables and comprises a lifting column, fixing blocks are arranged on two sides of the lifting column, the fixing blocks are connected with inclined supporting legs, each inclined supporting leg comprises a supporting portion arranged at the lower end, the horizontal height of the bottom of the lifting column is higher than that of the bottom of the supporting portion, and the inclined supporting legs are arranged on two sides of the lifting column. The supporting parts at the lower ends of the inclined supporting legs are lower than the bottoms of the lifting columns to ensure that the two supporting legs are stressed, meanwhile, the gravity of the table and the lifting columns above is distributed to the two inclined supporting legs, the two inclined supporting legs mainly bear pressure, the bending deformation risk is reduced, the inclined supporting legs are provided with grooves, the weight of the inclined supporting legs can be greatly reduced, and the structure is simple. The transverse ribs and the inclined ribs are arranged in the inclined supporting legs, so that the bending resistance and shear resistance of the inclined supporting legs are improved, and the bearing capacity of the table legs is improved.

This invention discloses a prefabricated vertical shaft foundation reinforcement system and construction method for shield tunnels in soft soil strata, relating to the field of vertical shaft foundation reinforcement technology. The system includes an external retaining system forming a water-stop curtain to prevent water and soil infiltration. The foundation reinforcement system comprises a first reinforcement structure and a second reinforcement structure, which work together to reinforce the foundation around the shaft, strengthening the soft soil around the shaft and increasing the bearing capacity of the foundation. This prevents local settlement of the foundation under shaft pressure, avoiding shaft tilting, deformation, and segment cracking. A load-bearing and anti-buoyancy structure extends through the first and second reinforcement structures to the stable strata below the shaft, and the reinforcement system is subjected to overall stress through a shaft opening ring beam, ensuring overall stability of the shaft. This system can adapt to extreme working conditions of large-diameter prefabricated vertical shafts in complex terrains such as riverbanks, water-rich areas, and soft soil.