43results about How to "Control the direction of rotation" patented technology

The invention discloses a mechanical type dynamic two-dimensional code lock for a public bike. The mechanical type dynamic two-dimensional code lock comprises a lock seat and a lock body, wherein the lock body is arranged in the lock seat; the lock body comprises a lock cylinder and a movable lock tongue, wherein the lock cylinder is movably connected with the movable lock tongue; the lock seat is also provided with a mounting base used for installing a two-dimensional code plate; a window for viewing a two-dimensional code on the two-dimensional code plate is formed in the mounting base; the movable lock tongue is parallel to the mounting base; the end, close to the window, of the movable lock tongue is a sheltering end, and the end, close to an object to be locked, of the movable lock tongue is a locking end; the movable lock tongue is connected with the mounting base in a sliding way; the sheltering end slides on the window so as to enable the two-dimensional code on the two-dimensional code plate to be switched between a displayed state and a sheltered state. The bike lock is reasonably combined with the two-dimensional code for identifying the public bike, so that the mechanical type dynamic two-dimensional code lock for the public bike is not only simple, compact and reliable in structure, but is also convenient to install; more superiorly, the basic structure of the public bike does not need to refit, so that the production cost is effectively lowered.

The invention relates to a travel trailer guide wheel device, comprising a guide wheel telescopic device and a guide wheel collecting and placing device. The travel trailer guide wheel device is characterized in that one lateral surface of the guide wheel collecting and placing device is fixedly connected to the corresponding position of a travel trailer, the middle part of the guide wheel telescopic device is movably connected with the guide wheel collecting and placing device, the guide wheel telescopic device can rotate relative to the overall guide wheel collecting and placing device by tensioning a pull rod of the guide wheel collecting and placing device, the guide wheel telescopic device can be locked at a horizontal or vertical position by loosening the pull rod, an overall guide wheel can stretch and contract up and down by rotating a handle of the guide wheel telescopic device, and the guide wheel can turn by continuously rotating the handle when the guide wheel is in reliable contact with the ground. The travel trailer guide wheel device is simple in structure, convenient to machine and install and low in cost, can allow the travel trailer to move in the specified direction before parking, and has a broad application space.

The invention discloses a rack drive type crawler bogie. The rack drive type crawler bogie comprises a bogie main body, a rack support and a transmission device, wherein the bogie main body is provided with a crawler used for carrying and conveying cargoes; the transportation direction of the crawler is perpendicular to the advancing direction of the bogie; the rack support is arranged on the sideedge of the bogie main body; the side, facing the bogie main body, of the rack support is provided with an upper rack and a lower rack which can be ascended and descended vertically; and the transmission device is arranged under the crawler and comprises a gear engaged with an upper gear and a lower gear, a synchronous pulley set which is in transmission connection with the crawler, and a transmission assembly for transmitting rotation of the gear to the synchronous pulley set. The rack drive type crawler bogie has the beneficial effects that through relative movement of the bogie and the racks, the crawler is driven to move through a gear-rack engagement mechanism in cooperation with the relevant transmission device, and the cargoes on the crawler of the bogie are dropped from a conveying line.

The present invention sequentially controls a first vane module, a second vane module, a third vane module, and a fourth vane module in consecutive order, thereby generating round swinging wind aroundan indoor unit, so as to have advantages of providing direct air in the discharging direction of each vane module, and providing indirect air to an indoor space that is outside the discharging direction of each vane module.