Abstract: A wheel assembly comprises a wheel, a transmission assembly mounted on the wheel, and a motor coupled to the wheel through the transmission assembly. The motor includes an axle extending in a radial direction of the wheel. The transmission assembly transmits a rotational motion of the axle to a rotational motion of the wheel.

Abstract: The present invention relates to a photovoltaic tracker, and in particular to a solar photovoltaic component tracking apparatus and an installation method therefor. The apparatus comprises upright posts; a main shaft is arranged between two adjacent upright posts; a photovoltaic component is arranged on the main shaft; two adjacent main shafts are connected via a connecting shaft; the connecting shaft is fixed on the upright post; the upper end face of the upright post is an upright post installation face; a through-hole is arranged on the upper portion of the upright post; and the connecting shaft is installed in the through-hole via a bearing structure. The through-hole is arranged on the upright post, and the connecting shaft is installed in the through-hole via the bearing structure. Pre-installation is firstly performed, and then the whole upright post combination is hammered integrally via a pile hammer.

Abstract: Motorized skating systems and methods for controlling the systems are disclosed. One exemplary system may include a primary skate and a secondary skate. The primary skate may include a sensor configured to detect a tilting signal. The primary skate may also include a first processor. The processor may be configured to determine a first control signal for moving the primary skate based on the tilting signal and determine a motion signal for moving the secondary skate based on the first control signal. The primary skate may further include a first communication interface configured to send the motion signal to the secondary skate. The secondary skate may include a second communication interface configured to receive the motion signal from the first communication interface. The secondary skate may also include a second processor configured to determine a second control signal for moving the secondary skate based on the received motion signal.

Abstract: A wheel assembly comprises a wheel, a transmission assembly mounted on the wheel, and a motor coupled to the wheel through the transmission assembly. The motor includes an axle extending in a radial direction of the wheel. The transmission assembly transmits a rotational motion of the axle to a rotational motion of the wheel.

Abstract: A method for protecting high temperature stainless steel from coking and corrosion at elevated temperatures in corrosive environments, such as during ethylene production, by coating the stainless steel with an overlay coating of MCrAlX in which M is nickel, cobalt, iron or a mixture thereof and X is yttrium, hafnium, zirconium, lanthanum or combination thereof. The overlay coating and stainless steel substrate are heat-treated to metallurgically bond the overlay coating to the substrate and to form a multiphased microstructure. The overlay coating preferably is aluminized by depositing a layer of aluminum thereon and subjecting the resulting coating to oxidation to form an alumina surface layer. An intermediary aluminum-containing diffusion coating may be deposited directly onto the stainless steel substrate prior to deposition of the overlay coating to form a protective interlayer between the stainless steel substrate and overlay coating.

Abstract: The invention provided a new type of high capacity storage battery, wherein the colloidal electrolyte is hard to hydration, and has no cracking, and some improvements on the said high cpacity colloidal storage battery are also disclosed.

Abstract: This is a portable effluent gas treating device used on non-active elements of the lead battery. It is composed of an acid-base resistant container and a cover with holes. A sponge-like filler containing alkali liquid is placed inside the container which opening top is connected with the cover and its lower part is provided with a passage communicating with the unit battery box. The present invention not only can eliminate the environment pollution of lead battery effluent gas, but also is convenient to use and to carry.