4results about How to "Adjust stroke" patented technology

The utility model discloses a kind of flap valves, belong to gas flow detection technical field, specifically related to a kind of flap valve device, comprising: frame, stepper motor, extension arm, support, flap, thick pipe air inlet pipe mouth and thin tube air inlet pipe mouth;Stepper motor, support fixed installation in frame, flap rotation is installed on support, one end of extension arm is sleeved on the rotating shaft of stepper motor, the other end is contacted with flap and swing on flap, and top bead and spring are equipped in the bottom of its extension arm;The utility model has the advantages of simple structure, mature technology, high reliability, low cost, high security, etc., especially in the occasion (such as petroleum, chemical industry, natural gas) and cost-sensitive occasion that security, explosion-proof requirement is extremely high, spring compression scheme of the utility model is first choice.

The utility model belongs to the technical field of oil cylinder, concretely is an adjustable oil cylinder, including right angle board, the upper surface fixed connection of right angle board has two connecting plates, the side surface of two connecting plates is close to each other and is fixedly connected with fixed plate in common, the back of fixed plate and the front of right angle board are fixedly connected, be equipped with the adjusting plate between two connecting plates, the upper surface fixed mounting of adjusting plate has oil cylinder body, the output end fixed mounting of oil cylinder body has connecting sleeve. The utility model through the output end of servo motor drives screw rod to rotate in screw adjusting hole and bearing inner race, realizes the up and down movement of adjusting plate, thereby the stroke of oil cylinder is adjusted flexibly, and adjusting plate can keep stable movement track with the cooperation of sliding hole and sliding rod, and the cooperation of connecting plate and guide block ensures the stable adjustment process.

The invention discloses a punching mechanism for a film mulching rice transplanter. The punching mechanism is characterized in that a plurality of guide holes are formed in a supporting frame; the punching rod is movably matched with the guide hole; the multiple punching needles are obliquely arranged in the length direction of the supporting frame, and the middles of the punching needles are in sliding fit with the through holes in the supporting frame; eccentric wheels are connected to the two ends of the driving shaft and connected with linkage pieces, and the other ends of the linkage pieces are connected with the punching rods. When the driving shaft drives the eccentric wheel to rotate, the linkage piece drives the punching rod to move in the length direction of the guide hole and is linked with the punching needle to perform opening action and punching, the lower end of the punching needle quickly moves to the position below a transplanting claw of the transplanting mechanism, and a mulching film is punctured and moved away instantly before the transplanting claw inserts seedlings into a field. Therefore, the rice transplanting claw can transplant rice at the position punctured by the mulching film. The method has the technical effects that the seedling jumping phenomenon caused by the elasticity of the mulching film is eliminated, meanwhile, the extrusion damage of the broken opening of the mulching film to the rhizome of the seedling is completely eradicated, and the survival rate and the uniformity of transplanting are greatly improved.

The utility model discloses a pressure regulating mechanism for precision stamping, which comprises a stamping mounting base, a stamping mounting frame component is fixedly arranged at one end above the stamping mounting base, an adjustable crankshaft component is rotatably connected to the inside above the stamping mounting frame component, and a stamping regulating component is rotatably connected to one end below the adjustable crankshaft component. An adjustable sliding block assembly is arranged at one end below the stamping adjusting assembly. During stamping, the stamping stroke can be quickly and conveniently adjusted by adjusting the switching limiting bolt to penetrate through the switching through holes at different height positions, and meanwhile, the distance between the stamping adjusting assembly and the adjustable sliding block assembly is adjusted by synchronously rotating the two sets of adjusting nuts, so that the stamping precision is improved. And the compression degree of the two sets of adjusting elastic pieces can be adjusted, so that the pressure during stamping can be conveniently adjusted to a certain extent, and use is more convenient.