58results about How to "Precise size adjustment" patented technology

The invention discloses a novel tunnel lining segment mold. The novel tunnel lining segment mold comprises a bottom mold body, end mold bodies symmetrically arranged on the two sides of the bottom mold body and side mold bodies symmetrically arranged at the top of the bottom mold body. The bottom ends of the side mold bodies and the bottom ends of the end mold bodies are connected with the bottommold body through hinges, the side mold bodies and the end mold bodies are positioned on the bottom mold body through adjustable conical positioning devices, the side mold bodies and the end mold bodies are positioned through conical positioning devices, the side mold bodies, the bottom mold body and the end mold bodies are locked through locking devices, and mold starting devices are arranged between the side mold bodies and the bottom mold body as well as between the end mold bodies and the bottom mold body. The novel tunnel lining segment mold is accurate in positioning, stable in structureand high in precision, no clearing dead corners exist, and the novel tunnel lining segment mold can adapt to attachment type vibration and improve product quality.

An overload protection transmission gear comprises a gear outer ring and a gear inner ring which are arranged in a sleeved mode. The gear outer ring is provided with a plurality of mounting holes, and an ejection head and an ejection head spring are arranged in each mounting hole, wherein one end of the ejection head spring is matched with the ejection head, and the other end of the ejection head spring is limited into the mounting hole through an ejection head spring pin; the gear inner ring is provided with a plurality of location grooves corresponding to the mounting holes, and the location grooves are used for containing transition sections of the ejection heads. The overload protection transmission gear can control transmitted torque and prevent other parts from being damaged by overload.

The invention belongs to the technical field of crushers, and in particular relates to a counter-roll crusher with grinding rollers with a fixed-axis support structure. The invention includes a crusher frame, the crusher frame is provided with a fixed roller part and a movable roller part, a crushing discharge port is formed between the fixed roller part and the movable roller part, and the crusher frame is provided with There are drivers. In the present invention, by setting the discharge port adjustment component, when crushing ore of different sizes, the discharge port adjustment component drives the moving roller part to move to the end close to or away from the fixed roller part, so as to adjust the size of the crushing discharge port, which can reduce the work intensity of the staff. , Precisely adjust the size of the discharge port, ensure that the size of the discharge port is consistent within the full length of the roller, and maintain the crushing discharge port, which can overcome the disadvantages of traditional models that cannot crush hard ores, and can be used in the production of metal mines, greatly reducing The cost of crushing metal mines, and at the same time, it can pass through the iron regulator during crushing. Accurately determine whether the iron is too high to ensure the safety of the equipment.

The invention discloses a specimen clamping device for a large-diameter separated Hopkinson compression bar, which includes a fixed end and a sliding end, the fixed end includes a fixed sleeve, and a fixed collar is sleeved on the fixed sleeve. There are several fixing holes on the ring; the sliding end includes a sliding sleeve, and the sliding sleeve is connected to the sliding collar through a number of evenly opened chute slots; A positioning hole is opened on the collar corresponding to the position of the slider, and a positioning piece is installed in the positioning hole; a plurality of connecting holes are opened on the sliding collar, and the connecting holes and the fixing holes are respectively connected with two ends of the elastic element. The invention can solve the problems of insufficient support reliability and low positioning accuracy of the specimen clamping device in the prior art, has high reliability, small randomness and good versatility, and can be flexibly adjusted and adjusted according to the specimen size and specimen strength. Assembly, and easy to disassemble and assemble; the pre-clamping force can be adjusted in a large range and has strong applicability.

The invention discloses an electromagnetically controlled low-frequency ultrasonic secondary atomization nozzle, which includes a nozzle, a liquid inlet hole is opened on the nozzle, the liquid inlet hole is connected to one end of the liquid outlet hole, the end of the nozzle is a trapezoidal nozzle groove, and the trapezoidal nozzle groove is set Trapezoidal secondary atomizing mover, the other end of the liquid outlet hole is connected to the trapezoidal nozzle groove; the iron core is bonded to the trapezoidal secondary atomizing mover, coils are wound on the iron core, and the iron core is covered by a protective cover to protect The cover is bonded to the trapezoidal secondary atomizing mover; one end of the block supports the trapezoidal secondary atomizing mover, and a sponge is inserted between the block and the trapezoidal secondary atomizing mover, and the sponge is bonded to the block, and the stopper The other end is welded to the nozzle. By adjusting the circuit to change the size of the inflow current in the coil, the magnitude of the electromagnetic force can be precisely adjusted, and the distance between the trapezoidal nozzle groove and the trapezoidal secondary atomizing mover can be precisely controlled, thereby accurately controlling the size of the generated droplets.