90results about How to "Launch fast" patented technology

A pneumatic firing device includes a rear section engaging a cylinder, a solenoid valve engaging the rear section from under, an adjusting element disposed inside the rear section, a piston disposed inside the cylinder to form a first chamber and a second chamber, an airflow guiding element engaging the cylinder at a front thereof, a moving rod having a tail end engaging the piston and a front end stretching through the cylinder into the airflow guiding element for operation control of the airflow guiding element, and a front section engaging a front of the airflow guiding element and having a plurality of passage to displace the delivery tube through a hole thereof. The solenoid valve holds control of the operation of a pressure release channel to change the pressure difference between the first and second chamber, making the pressured air entering a first passage from a first guiding hole of the airflow guiding element, pushing the delivery tube to a firing position, flowing into a second passage from a second guiding hole, and then firing a pellet with strong airflow.

The invention relates to an efficient ball serving device, in particular to an efficient ball serving device for tennis training. The efficient ball serving device for tennis training achieves the technical purposes that the tennis serving speed is high, tennis balls cannot be clamped during ball serving, the ball serving efficiency is high, and continuous ball serving can be achieved. In order toachieve the technical purposes, the efficient ball serving device for tennis training comprises a base plate, a left supporting plate and the like; a driving device is arranged above the base plate,a transverse plate is arranged on the top of the driving device, a first push rod is arranged on the left side of the top of the transverse plate, the left supporting plate is arranged on the left side of the top of the base plate, and a first track is arranged on the top of the left supporting plate. The effects that the tennis ball serving speed is high, tennis balls cannot be clamped during ball serving, the ball serving efficiency is high, and continuous ball serving can be achieved are achieved, the driving device drives the first push rod to move leftwards, a movable device drives the first push rod to move upwards, and therefore the first push rod can push tennis balls to move forwards.

The invention discloses a small two-stage light-gas gun and relates to a light-gas gun. The small two-stage light-gas gun comprises a cylinder barrel, a pressure transmitting tube, a pressing column, a launching tube, a piston handle, a pressure transmitting body, a membrane, a membrane rupturing device, a first sealing ring, a metal sealing ring, a support and a plurality of supporting seats; a piston on the piston handle is in sliding contact with the inner circumferential surface of a gas chamber; one end of the pressure transmitting tube is connected with a gas port in a threaded manner, and the pressure transmitting tube is hermetically connected with the pressing column; the pressure transmitting body is mounted in the pressure transmitting tube; the first sealing ring and the metal sealing ring are mounted in a mounting groove from the inside to the outside, the membrane is hermetically connected with the membrane rupturing device, and the membrane rupturing device is hermetically connected with the launching tube; the cylinder barrel is mounted on the support, and the pressure transmitting tube and the launching tube are respectively detachably connected onto the supporting seats. The small two-stage light-gas gun has the advantages that problems that an existing light-gas gun is driven by gunpowder at a primary stage, accordingly, environments are polluted, occupied space is large, sealing cannot be carried out in a membrane rupturing procedure implemented by the aid of high-pressure gas and the bullet launching speed cannot be increased are solved, and the small two-stage light-gas gun is used in fields of spacecrafts or research on material performance and the like.

The invention relates to a hole bottom tubular linear motor electric impactor, which comprises a motor outer cylinder, a permanent magnet rod, a linear ball bearing, a mover, a mover silicon steel sheet, and a mover coil. The outer cylinder of the motor is the shell of the linear motor, the permanent magnet rod is fixed on the outer cylinder of the motor, and the permanent magnet rod is used as the stator of the linear motor; the mover moves relative to the permanent magnet rod through the linear ball bearing; The iron core is composed of silicon steel sheets. There are slots in the iron core, and mover coils in the slots; the coils use three-phase AC windings, which are used to connect to three-phase symmetrical alternating current, and generate a traveling wave magnetic field that is consistent with the moving direction of the mover; There are two shock absorbing springs for shock absorption. The impactor adopts a moving coil structure, that is, the permanent magnet rod and the iron core are fixed, and the coil moves. At the same time, a buffer gasket is designed between the mover and the base to improve the anti-fatigue life of the impactor. The impactor has a simple and firm structure, low manufacturing and maintenance costs, easy adjustment of impact stroke speed and frequency, high efficiency, and can be used for deep hole drilling.