2results about How to "Adjustable stroke" patented technology

This invention relates to the field of flange bolt hole centering technology, specifically a device for high-precision reproduction of the center of bolt holes in thick flanges. The device includes a centering main frame that can be inserted into the bolt holes of the flange body, a target head component fixedly mounted at the top of the centering main frame, with a target center for measurement at the top center of the target head component, and a lifting component movably disposed axially inside the centering main frame. This invention provides high-precision bolt hole center coordinates, ensuring the processing accuracy of prefabricated flange pipe sections from the source, completely avoiding the occurrence of "misaligned holes" during on-site installation, improving installation efficiency, ensuring the sealing and safety of equipment connections, and reducing the huge costs and project delays caused by modifying or scrapping pipe sections.

The invention discloses a bare seedling planting mechanism, a self-propelled bare seedling transplanting device and a self-propelled bare seedling transplanting method, solves the problem that a bare seedling planting mechanism in the prior art is low in response speed, and has the beneficial effects of improving the response speed and improving the adaptability of bare seedlings. A crank in the crank four-bar mechanism is connected with a power source and connected with a rocker through a connecting rod, a push-pull mechanism is supported on one side of the connecting rod, the push-pull direction of the push-pull mechanism is the same as the arrangement direction of the connecting rod, the output end of the push-pull mechanism is movably connected with one ends of two pull rods respectively, and a set angle is formed between the two pull rods. The connecting rod supports the first support, the first support rotatably supports the middle sections of the two clamping finger mounting arms, one end of each clamping finger mounting arm is hinged to the other end of the pull rod, the first bent position of each clamping finger mounting arm is hinged to the first support, and the end, away from the pull rod, of each clamping finger mounting arm is connected with the corresponding planting clamping finger.