34results about How to "Reduce external load" patented technology

A molding apparatus of a glass material according to the present invention is characterized by containing means for holding a glass material and a molding die in contact with each other, means for heating the glass material and the molding die, and means for applying a voltage across the glass material and the molding die, in which press-molding is performed by electrostatic attraction acting between a surface of the glass material and a surface of the molding die. Further, a molded product of a glass material according to the present invention is characterized by including an alkali metal as a component, in which a concentration of the alkali metal is lowered in vicinity of a surface to be molded as compared with that of a glass base material.

An apparatus and method for internal repair of pipes and conduits, such as sewer pipes, pressurized water mains, water wells, and natural gas lines. The conduit repair apparatus includes a sleeve with locking mechanism to lock the sleeve in a tubular configuration. The sleeve is made of metallic or rigid plastic sheet having perforations. Some of the perforations are shaped like elongated slots and strips. A number of resilient O-rings are applied over the outer surface of the sleeve. A resilient membrane is applied over the O-rings. In one embodiment, a reinforcement band is used, and an additional layer of O-rings are included between the membrane and the reinforcement band.

The invention discloses a cylindrical pile leg, and belongs to the field of ocean platforms. The cylindrical pile leg comprises a pile leg barrel. The bottom end of the pile leg barrel is used for being connected with a pile shoe. The cylindrical pile leg further comprises submerged pumps, drain pipes and a remote control valve. The remote control valve is arranged on the side wall, close to the bottom end, of the pile leg barrel and is used for controlling whether an inner cavity of the pile leg barrel communicates with the outer portion of the pile leg barrel or not. The submerged pumps arearranged at the bottom of the inner cavity of the pile leg barrel. The drain pipes are arranged in the inner cavity of the pile leg barrel. One end of each drain pipe is connected with the corresponding submerged pump, and the other end of each drain pipe stretches out of the top of the pile leg barrel. When a self-elevating ocean platform prepares pile standing, the remote control valve is opened, seawater passes through the valve to enter the pile leg, seawater pressure inside and outside the pile leg is offset, external loads borne by the pile leg are reduced, the wall thickness of the pileleg barrel is reduced, the weight of the pile leg is reduced, and the manufacturing cost and manufacturing difficulty of the pile leg are reduced.

An LED lighting unit (1) includes a housing (10), a circuit board (31) and a seal member (50). The seal member includes a seal main body (51) inserted into the housing in an insertion direction, a wire insertion portion (60), a protrusion piece (61) protruded from a rear surface of the seal main body opposite to the insertion direction. A holder (70) is arranged at one side of an opening of the housing relative to the seal member and includes a guide base (71) inserted into the housing, a protruded wire guide portion (74) protruded from a front end surface of the guide base and arranged at a position facing the wire insertion portion within the housing, and a wire lead portion (72a) leading an electric wire from a position adjacent to the guide base to the external. The opened surface of the housing coincides with a rear end surface of the guide base within the housing.

The invention discloses a power supply method and device used under idling working conditions. The method includes the step of detection and the step of power supply mode change. The detection step includes the substep that whether current working conditions of a vehicle meet idling working condition power supply conditions or not is detected. The power supply mode change step includes the substep that if the idling working condition power supply conditions are met, power generation voltage of a power generator is adjusted, so that the power generator and a storage battery supply power to an external load together, and an idling working condition power supply mode starts. Under the idling working conditions, the power generation amount of the power generator is reduced, accordingly the external load of an engine is reduced, and idling vibration in the vehicle is improved. Compared with the prior art, idling vibration in the vehicle is improved by controlling the power generation amount of the power generator, the power supply method and device are not limited by the type of gearboxes and air conditioner compressors, and the application range is wider.

The invention provides a self-balancing arch rib vertical rotation and lift construction method. The method has the following beneficial effects that: the terrain characteristics of the plains are considered, the idea of turning vertical force into horizontal force in the traditional vertical rotation method is abandoned, the characteristic of strong vertical bearing capacity of the tower is fully used, and the position of the tower, arrangement of upper and lower anchor points of the system and arrangement of various standard steels of the tower are improved to ensure the transfer path of the tower load to be simple and definite, ensure the horizontal force in the vertical rotation process to be as low as possible and be even zero and form a tower system with strong resistance and high horizontal force, thus utilizing the capacity of the tower to balance the horizontal force generated in the vertical rotation process and forming the self-balancing arch rib vertical rotation and lift technology, without rear anchor cables; therefore the construction difficulty of arch bridges, especially large span arch bridges in the plains can be greatly reduced. The method provided by the invention has the characteristics of high construction safety, good economy, strong operability and the like and is suitable for installation of arch ribs in the plains.

The invention discloses a pressure-resistant housing of a deep-sea submersible, belonging to the field of deep-sea submersible. The pressure-resistant shell comprises an outer pressure-resistant spherical shell and an inner pressure-resistant spherical shell, and seawater is arranged in the cavity between the outer pressure-resistant spherical shell and the inner pressure-resistant spherical shell. A first relief valve is arranged on the outer side of the outer pressure-resistant spherical shell, a second relief valve is arranged on the outer side of the inner pressure-resistant spherical shell, and the second relief valve is arranged in a slow flow cavity on the inner pressure-resistant spherical shell; the outer side of the inner pressure-resistant spherical shell is also provided with ahigh-pressure gas cylinder which is connected with the cavity; an access hatch is arranged on the outer pressure spherical shell and the inner pressure spherical shell, an access hatch cover base isarranged on the outer pressure spherical shell and the inner pressure spherical shell at the access hatch, and an access hatch cover is arranged on the access hatch cover base; the invention solves the problem that the material requirement of the pressure-resistant shell is difficult to realize under the condition that the radius of the spherical shell with constant submergence is increased, and can ensure that the submergence is constant, and the external load of the structure is reduced while the radius of the spherical shell with constant submergence is increased, thereby ensuring the strength and stability of the structure.