Buffer valve casting for excavator hydraulic pump

Abstract

The invention discloses a buffer valve casting for an excavator hydraulic pump. The buffer valve casting for the excavator hydraulic pump comprises a casting body, connecting mechanisms and a cleaningmechanism; connecting pipes are arranged on the bottom end surface of the casting body; a second connecting disc is arranged on one side surface of each connecting pipe of the casting body; the connecting mechanisms are located on the surfaces of the connecting pipes; each connecting mechanism comprises a first connecting disc; each first connecting disc is located on one side surface of the corresponding connecting pipe; each connecting pipe penetrates through the corresponding first connecting disc; a fixing hole is formed in one side surface of each first connecting disc; a second connecting disc is arranged on one side surface of each first connecting disc; a connecting rod is fixedly connected to one side of each second connecting disc; and each second connecting disc is clamped withthe corresponding fixing hole through the connecting rod to connect the other connecting disc. The arrangement of the arranged first connecting discs facilitate convenient and quick connection between the valve body and an external connecting pipe and improve the practicability of the buffer valve; through a formed first threaded hole, the cleaning work of a filtering net by working personnel isfacilitated; and the filtering effect of a filtering net on a liquid is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of buffer valve castings, and in particular relates to a buffer valve casting for an excavator hydraulic pump. Background technique [0002] The hydraulic pump is the power component of the hydraulic system. It is driven by an engine or an electric motor. It sucks oil from the hydraulic oil tank, forms pressure oil and discharges it, and sends it to the actuator. Hydraulic pumps are divided into gear pumps, plunger pumps, vane pumps and screw pumps according to their structure. A hydraulic component that provides pressurized fluid for hydraulic transmission and is a type of pump. Its function is to convert the mechanical energy of the power machine (such as electric motor and internal combustion engine, etc.) into the pressure energy of the liquid. There are many factors that affect the service life of a hydraulic pump. In addition to the design and manufacturing factors of the pump itself, it is also rela...

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Problems solved by technology

[0003] However, there are still some disadvantages in the existing shock valve castings for hydraulic pumps of excavators. When the valve body needs to be connected with an external connecting pipe, the surface of the flange is provided with a plurality of connection holes, requiring the staff to connect the bolts and nuts one by one. It is time-consuming and labor-intensive. In addition, when the buffer valve is used for a long time, the surface of the filter screen will accumulate too much dust and other impurities, which will easily block the filter holes on the surface of the filter screen. Therefore, we propose a buffer valve casting for excavator hydraulic pumps.

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