51results about How to "Problems affecting normal work" patented technology

The invention belongs to the technical field of ladders, and particularly relates to an electric ladder capable of realizing rapid climbing under a dangerous condition of borehole operation. The electric ladder comprises ladder bodies, wherein a plurality of groups of ladder bodies are in stacked sliding connection; the inner side wall of the middle part of each ladder body is fixedly connected with an electric cylinder; the side wall of each electric cylinder is fixedly connected with a protective shell; each protective shell sleeves the corresponding ladder body; the inner side wall of the top of each protective shell is in sliding connection with a sleeve shell; and each sleeve shell sleeves the output end of the corresponding electric cylinder. The protective shells and the sleeve shells are arranged on a motor to protect the motor; meanwhile, when the electric cylinders extend, the sleeve shells can extend out of the interiors of the protective shells to protect extending electric cylinder output rods; by the arrangement of the protective shells and the sleeve shells, the electric cylinders are protected from being easily influenced by external small stones; and when small stones and sand fall down from a well, the problem that the small stones and the sand are in direct contact with the electric cylinders to influence the normal work of the electric cylinders is avoided, and the stability of the ladder bodies during working and unfolding is improved.

The invention discloses a high-pressure water well valve for an oil field and relates to the technical field of valves. The high-pressure water well valve specifically comprises a valve body with an oil inlet and an oil outlet at two ends, an oil drainage portion fixedly connected to the bottom of the valve body, a valve seat fixedly installed above the valve body and a valve rod extending to a valve body cavity. An inner side wall of the valve body is fixedly connected with a guide rail, and a lower inner side wall of the valve body is provided with a sealing groove. According to the high-pressure water well valve for the oil field, by setting a driving crank, a driven crank and a pressure sleeve for cooperation, the lever principle is used, the driving crank is pressed, the driven crankcan be driven to rotate downward, therefore, the pressure sleeve pulls the valve rod to move upward along a guide sleeve, the lifting and lowering of the valve rod are controlled, the spiral control is not needed, a problem that soil and sand in an oil field may be brought into a spiral during the rotation of the valve rod to cause spiral blocking and affect the normal working of the valve is avoided, and the stability of the working of the water well valve is effectively improved.

The invention provides a control method and system for a central air-conditioning module. The central air-conditioning module comprises a plurality of central air conditioners, and each central air conditioner comprises a main controller and a first wireless communication module connected with the main controller. The control system comprises a second wireless communication module, and the second wireless communication module is connected with the first wireless communication modules in a wireless manner. The second wireless communication module transmits a control command to the main controllers through the first wireless communication modules to control the operating parameters of the central air conditioners, and therefore wireless control over the central air conditioners can be achieved through the second wireless communication module and the first wireless communication modules; and the problems that in the prior art, due to aging of a central-air-conditioner bus, communication faults of the central air conditioners are caused, and normal work of the central air conditioners is influenced are solved.