5results about How to "Guaranteed preload" patented technology

The application provides a radial sealing structure and mounting method, which comprises the following steps: preparing for sealing, placing the sealing cover and the sealing cylinder in the vacuum box after aligning, vacuumizing and pressure-keeping of the vacuum box, inflating the vacuum box to mount the sealing cover in place, and mounting and tightening the connecting screw. The application adopts a special mounting method, which can effectively reduce the mounting difficulty of the sealing structure, ensure the mounting of the sealing structure in place, maintain the pre-tightening force of the mounting screw, and prevent the sealing structure from losing sealing effect due to the reduction of the pre-tightening force.

The invention relates to the technical field of wiring terminals, in particular to a wiring terminal assembly which comprises a shell, first conductive metal and second conductive metal are fixedly installed in the shell, the second conductive metal is located below the first conductive metal, metal gaskets are arranged at the two ends of the first conductive metal and the two ends of the second conductive metal, and a plurality of reinforcing screws are arranged on the metal gaskets. The shell is provided with the rotating plate anti-loosening assembly, when the anti-loosening assembly is closed, the anti-loosening block on the rotating plate can be aligned with the reinforcing screw, the anti-loosening block can apply pressure to the reinforcing screw, and then rotation of the reinforcing screw is limited, so that the situation that the reinforcing screw rotates due to continuous vibration during equipment operation is avoided through the design, and the service life of the reinforcing screw is prolonged. According to the wiring terminal assembly, the pre-tightening force of the reinforcing screws is further ensured, the lead is prevented from loosening under long-term vibration, the safety of the wiring terminal assembly is improved, the anti-loosening assembly can prevent the screws from loosening, the cost is reduced, and the working efficiency of workers is also improved.

The utility model relates to the technical field of steel bar sleeves. The utility model discloses a self-adaptive reducing steel bar sleeve spring pre-tightening mechanism which comprises a reducing sleeve, the inner side of the reducing sleeve is rotatably connected with a pre-tightening assembly, the outer side of the reducing sleeve is fixedly connected with a limiting assembly, the pre-tightening assembly further comprises a rotating ring, the outer side of the rotating ring is fixedly connected with an extension spring, and the outer side of the extension spring is fixedly connected with a limiting assembly. According to the mechanism, the pre-tightening assembly is arranged, the pre-tightening sleeve is rotated, a threaded groove in the inner side of the pre-tightening sleeve is meshed with a thread on the outer side of a steel bar, the pre-tightening sleeve gradually slides out of the variable-diameter sleeve in the rotating process, and at the moment, the extension spring is in a stretched state; when the steel bar is pre-tightened, a tensile force close to the variable-diameter sleeve is applied to the pre-tightening sleeve, so that the steel bar is pre-tightened preliminarily, the steel bar and the variable-diameter sleeve are connected more tightly, the position of the steel bar is fixed preliminarily, and the steel bar is prevented from being loosened easily in the subsequent construction or use process.

The application discloses a cell culture shaking device convenient to adjust, and relates to the technical field of cell culture.The cell culture shaking device convenient to adjust comprises a shaking plate, the shaking plate is obliquely arranged in a shell, a plurality of holes are formed in the surface of the shaking plate, a limiting assembly is fixedly connected to the inner side surface of the shaking plate, a driving assembly is fixedly connected to the bottom of the inner side surface of the shell, the side of the driving assembly close to an end cover is in surface spline connection with the limiting assembly, and a clamping assembly is fixedly connected to the inner wall of the hole of the shaking plate.Because the shaking plate is obliquely arranged, the culture bottle not only generates horizontal circular motion in the rotating process, but also generates up-down displacement along the inclined surface of the shaking plate.In the process of revolving around the driving assembly once, the culture bottle will experience a complete rising and falling process, three-dimensional composite oscillation effect is formed, the culture medium and the culture bottle generate complex relative movement, cell and nutrient substance contact can be more efficiently promoted, and gas exchange efficiency is enhanced.

The utility model relates to the field of distribution box discloses an easily detachable mounting seat of low -voltage comprehensive distribution box, including bearing plate, the bearing plate is fixed at the bottom surface of distribution box body, the bottom surface of bearing plate is provided with two mounting seat bodies, is equipped with two positioning holes on mounting seat body, the bottom surface of bearing plate is equipped with a plurality of accommodating grooves, mounting seat body is inserted in accommodating groove, the left and right sides of bearing plate all are equipped with two L -shaped grooves, L -shaped groove is linked together with accommodating groove, the inner wall left and right sides of L -shaped groove all are equipped with mounting groove. In the utility model, through the synergies of limiting block, L -shaped limiting rod and limiting frame, the multidirectional location and self -locking fixed function of mounting seat body are realized, make mounting seat body not need to help the tool and can conveniently dismouting, have saved the labor and time cost, further saved the land occupation of distribution box body and mounting seat body when transporting.