Floating type two-dimensional double-piston pump

Abstract

The invention discloses a floating type two-dimensional double-piston pump which comprises a pump. An oil suction opening and an oil drain opening are formed in the pump, a pump unit is arranged in the pump and comprises two cylinders, the two cylinders are fixed into the pump and are arranged in the left-right directions, and two pistons are arranged in the two cylinders and are in linkage with each other; the central axes of the cylinders coincide with the central axes of the pistons, movement components are arranged at two ends of each piston and are used for driving the piston to axially move to change the volume of a working chamber, and piston movement driving directions of the corresponding movement components at the two ends of each piston are opposite to each other; each cylinder,the corresponding piston and the corresponding movement components on two sides of the piston form a portion of the floating type two-dimensional double-piston pump, an upper portion of the floatingtype two-dimensional double-piston pump is close to a front end cover, and a lower portion of the floating type two-dimensional double-piston pump is close to a rear end cover. The floating type two-dimensional double-piston pump has the advantages that oil distribution disc structures of the traditional peripheral plunger pumps are replaced with rotary and slide double-degree-of-freedom structures of the pistons, and accordingly the floating type two-dimensional double-piston pump has continuous oil suction and drain functions; the floating type two-dimensional double-piston pump is in doublemodes, reciprocating movement is carried out by 4 times whenever each piston rotates by a circle, and oil can be sucked and drained by 16 times and are increased by 4 times as compared with single-piston pumps.

Description

technical field [0001] The invention relates to a floating two-dimensional double-connected piston pump, belonging to hydraulic pumps and hydraulic motors in the field of fluid transmission and control. Background technique [0002] The plunger (piston) pump uses a plunger (piston) and a cylinder block as the main working components. When the plunger (piston) reciprocates in the plunger (piston) hole of the cylinder, the volume of the closed working volume chamber composed of the plunger (piston) and the cylinder changes, and the suction and discharge process is completed. According to the different arrangements of the plunger (piston) in the cylinder, the plunger (piston) pump is divided into two categories: radial type and axial type. [0003] The traditional common axial plunger (piston) pump relies on the reciprocating movement of the plunger (piston) in the cylinder to change the volume of the sealed working chamber to achieve oil suction and pressure. There are many ...

AI Technical Summary

Problems solved by technology

There are many relatively moving parts inside, high requirements on material and machining accuracy, sensitive to oil pollution, high requirements and costs for processing, use, and maintenance, and expensive; the cylinder rotates with the transmission shaft, and the moment of inertia is large, resulting in The response speed of start, stop, and speed regulation is slow, which is not conducive to controlling the output flow of the pump through speed regulation; there are many friction pairs in the cylinder body, and the cylinder temperature rises faster under high-speed rotation, and the valve plate, plunger (piston) The wear and tear of other parts directly affects the service life and durability of the pump

In addition, due to the limitation of the working principle of the plunger (piston) pump itself, each plunger (piston) can only achieve one oil suction and one oil discharge when the transmission shaft rotates one revolution. Design the flow distribution mechanism to complete the switching of oil suction and discharge in the working chamber

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