Electronic control valve

Abstract

The invention discloses an electronic control valve which comprises a valve body. A safety valve, a first electromagnetic valve and a second electromagnetic valve are arranged on the valve body, and a stop valve, a first logical valve and a second logical valve are arranged in a valve cavity in the valve body; the stop valve comprises a manual operation rod, and an end of the manual operation rod extends out of the valve body; and an oil inlet port (P), an oil returning port (T) and a working oil port (A) are arranged on the valve body. The electronic control valve has the advantages of being capable of recycling energy when weights on a forklift truck are descended, capable of achieving manual unloading, high in safety and reliability and the like.

Description

technical field [0001] The invention relates to an electric control valve. Background technique [0002] Forklifts refer to various wheeled handling vehicles for loading and unloading, stacking, short-distance transportation, and heavy handling of palletized goods. They belong to material handling machinery and are widely used in national economies such as stations, ports, airports, factories, and warehouses. Each department is an efficient equipment for mechanized loading and unloading, stacking and short-distance transportation. Forklift is the most basic loading and unloading equipment in the logistics industry. Its most basic function is to lift goods up, down or forward and backward, and transfer them from one location to another. During the working process of the forklift, there is a situation that does not need to consume engine power, that is, the state of free falling of heavy objects from a position of high potential energy to a low place. In the process of the w...

AI Technical Summary

Problems solved by technology

Once the descending electromagnetic self-locking valve fails, the pressure oil in the lifting hydraulic cylinder cannot return to the oil tank, and the mast cannot descend at this time, and will be stuck in the working position

When the mast is in the working position for maintenance, once the self-locking function of the descending electromagnetic self-locking valve is destroyed during the maintenance process, the mast will suddenly fall under the action of its own weight, which will likely hurt the staff and cause maintenance There are potential safety hazards in the process, which is not conducive to protecting the personal safety of the staff; if there are goods on the door frame, the goods will also be damaged during the falling process

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