4results about How to "Reliable stop" patented technology

The present invention provides a new action toy capable of moving an action member back and forth while rotating. The action toy is provided with a rotating shaft on which an action member is mounted so that the action member can move in the axial direction, and a wall that surrounds at least a portion of the outer circumference of the rotating shaft and has a helical first engagement portion extending in the axial direction of the rotating shaft, a second engagement portion being formed on the action member to engage with the first engagement portion, the action member being caused to perform helical movement by causing the second engagement portion to follow the first engagement portion to perform action.

The utility model is suitable for mine machinery and electrical control technical field provides a kind of for mining bottom cleaning machine rotation's double limit structure, it include: fixed base;Rotary support, rotary support is connected between fixed base by rotary reducer;Hydraulic motor, the hydraulic motor is used to drive rotary reducer inner ring rotation;Limit pin, limit pin inserts the hole in rotary support and extends into the limit slot of fixed base;And angle sensor for detecting the rotation angle of rotary support, through electrical detection rotation angle will reach limit when reducing in advance, reduce the loss of mechanical collision, limit stop pin can effectively stop rotation, when stop pin has abrasion, can be corrected abrasion amount by turning 90 degrees;The utility model can improve control precision and operation quality, enhance system reliability and security, improve environmental adaptability and maintenance convenience, prolong equipment service life and reduce maintenance cost.

The invention relates to the technical field of oil seal press-fitting, and discloses motor end cover oil seal press-fitting equipment which comprises a workbench, the top surface of the workbench is provided with a moving limiting assembly for conveying an oil seal and an end cover to be coaxial, and the top surface of the workbench is provided with an end cover transferring and positioning assembly for transferring the position of the end cover. The top surface of the workbench is provided with an oil seal transferring and positioning assembly for transferring the position of an oil seal, and the top surface of the workbench is provided with a finished product discharging assembly for conveying a finished product subjected to press-fitting forming; through the moving limiting assembly, the end cover transferring and positioning assembly, the oil seal transferring and positioning assembly and the finished product discharging assembly, whole-process mechanical operation from end cover and oil seal feeding, positioning, angle adjusting, press fitting to finished product discharging is achieved, and manual intervention is greatly reduced; the press-fitting efficiency of the motor end cover oil seal is improved, and meanwhile the product error rate is reduced.

The utility model relates to plant tissue culture technology field discloses a kind of plant seedling tissue culture device, including tissue culture box, main shaft, first boss, second boss, multiple bearing plates and multiple link structures, main shaft is rotatably installed in tissue culture box;First boss and second boss are fixed on main shaft with upper and lower interval, multiple bearing plates are arranged with interval around the circumference of first boss, one end of bearing plate is hinged with first boss, the other end of bearing plate is overhanging to the outside of second boss;Limiting hole is opened in bearing plate close to first boss, limiting hole is through bearing plate and is positioned with cooperation with culture dish;Link structure is arranged in the lower side of bearing plate, and link structure is rotatably connected with second boss;Link structure includes tray, and tray corresponds with limiting hole, when pressing, tray protrudes limiting hole by link structure drive;Elastic member is also installed between bearing plate and second boss, elastic member drives bearing plate reset when loosening, and tray is driven to exit limiting hole by link structure.