8results about How to "Guaranteed driving force" patented technology

The invention discloses a linear motor air gap guaranteeing device and an adjusting method of an air rail set sports car. The device comprises a linear motor mover, a linear motor stator, a motor support, a framework, a positioning wheel pair, a compression spring device and a longitudinal pull rod, the linear motor stator is used for being installed at the bottom of the top wall of a box beam, the linear motor mover is located below the linear motor stator, and a fixed gap is kept between the linear motor mover and the linear motor stator; a gap detection sensor is arranged at the end of the linear motor mover, the motor support is connected to the upper portion of the framework in a suspended mode through the compression spring device and the longitudinal pull rod, and the linear motor mover and the positioning wheel pair are installed on the motor support. According to the invention, the air gap between the rotor and the stator of the linear motor can be conveniently controlled, detected and adjusted by using the relative position relation of the motor bracket, the pre-compression spring device and the positioning wheel pair of the linear motor and cooperating with the framework, the auxiliary adjusting structure and the detection device.

The invention discloses a tailstock type vertical take-off and landing aircraft with foldable outer-section wings and a design method of the tailstock type vertical take-off and landing aircraft, the outer-section wings can be folded and unfolded by matching a folding and unfolding driving mechanism with a four-bar mechanism, and the weight brought by a folding device is reduced on the premise of ensuring driving force and maintainability; when the wings are completely folded, the aircraft is in a four-rotor state, and when the wings are completely unfolded, the aircraft is in a fixed-wing state; the folding and unfolding of the wings give consideration to the conversion of the flight form, and the folding of the outer-section wings is realized on the premise of ensuring the reasonable gravity center and inertia of the fixed wing state and the rotor wing state at each folding and unfolding angle through the reasonable configuration of the gravity center of each shaft of the vertical take-off and landing aircraft, so that the space cost of the aircraft is reduced.

An electromagnetic system and a switching device, the electromagnetic system comprises a coil assembly, a static core and a moving core, the coil assembly comprises a coil framework and a coil wound outside the coil framework, the static core is fixedly arranged on the coil framework and arranged along the outside of the coil assembly, the moving core slides through the central hole of the coil framework and leaves at least two magnetic gaps between the static core, the moving core is also connected with a linkage, the linkage slides through the central hole, and both ends of the linkage extend to the outside of the both ends of the central hole as driving parts respectively. In the utility model, there are at least two magnetic gaps between the static core and the moving core, the driving force of the moving core is guaranteed, the design that the linkage penetrates the central hole makes that both ends of the linkage can be used for driving the contact system, and the electromagnetic system can drive more contact systems simultaneously.

Provided is an optical unit provided with a movable body having an optical module, a fixed body for holding the movable body, and a drive mechanism for rotating the movable body with respect to the fixed body so as to tilt the optical axis of the optical module, the optical unit being capable of rotating the movable body with respect to the fixed body even if the rotation angle of the movable body with respect to the fixed body becomes large. The optical module can ensure the driving force of the driving mechanism, and can be miniaturized in the optical axis direction of the optical module. In the optical unit, the drive mechanism includes a drive magnet attached to the movable body and a drive coil attached to the fixed body, and when the optical module is disposed at a predetermined reference position, the drive magnet and the drive coil face each other in a direction orthogonal to the optical axis direction of the optical module. The driving magnet is magnetized in the optical axis direction, and the magnetic pole of one surface of the driving magnet in the optical axis direction is different from the magnetic pole of the other surface of the driving magnet in the optical axis direction.

The application discloses a fastener driving tool and belongs to the technical field of electric tools. The fastener driving tool comprises a supporting cylinder, a striking unit with a driving piston and a striking piece, a driving air chamber in fluid communication with a displacement volume, a lifting assembly for driving the striking unit to move in a first direction, and a gas supplementing unit arranged in the supporting cylinder. The gas supplementing unit comprises a gas supplementing piston and a gas supplementing air chamber. In the process that the striking unit moves in a second direction, the volume of the gas supplementing air chamber is reduced, and the gas in the gas supplementing air chamber can enter the driving air chamber. In the process that the striking unit moves in the first direction, the volume of the gas supplementing air chamber is increased, and external air can enter the gas supplementing air chamber. The gas supplementing unit is additionally arranged to supplement the gas in the driving air chamber, which is beneficial to guarantee the driving effect.

The invention discloses a linear motor driving bogie of an air rail integrated sports car. The invention relates to a linear motor, which comprises a linear motor mover, a linear motor stator, a motor support, a framework, a positioning wheel pair, a walking wheel pair, a compression spring device, a longitudinal pull rod, a tread brake, a top rail brake, a current collector and a central suspension device, wherein the linear motor mover is positioned below the linear motor stator and keeps a fixed gap with the linear motor stator; a gap detection sensor is arranged at the end of the linear motor mover, the motor support is connected to the upper portion of the framework in a suspended mode through the compression spring device and the longitudinal pull rod, and the linear motor mover and the positioning wheel pair are installed on the motor support. The walking wheel pair, the tread brake, the top rail brake, the current collector and the center suspension device are all installed on the framework. The device can keep providing stable power and better braking capacity, and is suitable for high-altitude large-fall large-ramp route coal mine coal conveying occasions.

An electromagnetic operating system and switch device, including a coil frame and a magnetic yoke, the coil frame is provided with two spaced opposite magnets, the middle part of the coil frame is slidably assembled with a moving iron core, the magnetic yoke surrounds the outside of the coil frame, the middle part of the coil frame is wound with two coils, and the two coils are distributed along the axial direction of the coil frame for driving the moving iron core to move between a first position and a second position, and the drive rod connected to the moving iron core has at least one end penetrating through the magnetic yoke and extending out of the coil frame. In the utility model, two coils are arranged on the coil frame, the moving iron core is driven to move between the first position and the second position through the two coils, and the utility model has the advantages of simple driving process, high reliability and low cost.

The invention discloses a line hanging method for installing a bogie of an air rail set sport car into a box beam. A framework is fixed to a tool frame; a compression spring device is fixedly installed on the framework to conduct first compression on the framework; a walking wheel pair, a longitudinal pull rod, a tread brake, a top rail brake, a current collector and a central suspension device are respectively arranged on the framework; a motor rotor is installed on a motor support, and the motor support is installed on the top of a compression spring device and connected with a longitudinal pull rod; the compression spring device is compressed for the second time, and the motor support and the framework are fixed for the second time; the whole bogie is installed in the box beam, after the walking wheel pair falls onto the walking track, secondary fixing between the motor support and the framework is relieved, and the height of the compression spring device is slowly adjusted till the positioning wheel pair is pressed on the positioning track. The method is easy and convenient to operate, and after the bogie is installed in the box type track beam, the fixing piece is dismantled, and the floating state of the linear motor is recovered easily.