Hydraulic transformer with combined valve plate and its hydraulic circuit

Abstract

The invention discloses a hydraulic transformer with a combined type valve plate and a hydraulic loop of the hydraulic transformer, and belongs to the technical field of hydraulic pressure. The hydraulic transformer is characterized in that a boss of an inner plate with two outer teeth is sleeved with an outer plate with two inner teeth, and the right end face of the outer plate is attached to the left end face of a bottom plate of the inner plate; the first inner tooth and the second inner tooth of the outer plate and the first outer tooth and the second outer tooth of the inner plate are located in the same ring groove, and the ring groove is divided into a first arc-shaped groove, a second arc-shaped groove, a third arc-shaped groove and a fourth arc-shaped groove; a first oil channel, a second oil channel, a third oil channel and a fourth oil channel of a rear shell are communicated with a plunger cavity through a first oil hole, a second oil hole, a third oil hole, a fourth oil hole, the first arc-shaped groove, the second arc-shaped groove, the third arc-shaped groove and the fourth arc-shaped groove; and the outer plate is driven by a swing motor rotor to rotate through a spline, and the inner plate is connected with the rear shell through a pin shaft. The hydraulic transformer with the combined type valve plate and the hydraulic loop of the hydraulic transformer have the beneficial effects that the valve plate of the hydraulic transformer is simple in structure, the transformer ratio is increased in cooperation with the corresponding hydraulic loop, vibration and noise can be effectively lowered, and servo control can be easily achieved.

Description

technical field [0001] The invention belongs to the technical field of hydraulic components, and in particular relates to a hydraulic transformer with a combined flow plate and a hydraulic circuit thereof. Background technique [0002] The constant pressure network secondary regulation technology is a very important energy-saving solution in the field of hydraulic transmission today. The hydraulic transformer is the core component of the secondary regulation technology of the constant voltage network. Innas company applied for the invention patent of WO9731185A1. In this patent, the distribution plate of the hydraulic transformer is evenly arranged with three waist-shaped grooves, which are respectively connected with the constant voltage source, the load and the low voltage source. "The Development Status of Hydraulic Transformers" summarizes the technical problems of hydraulic transformers, which are "control problems", "vibration and noise", and "interface problems betwe...

AI Technical Summary

Problems solved by technology

[0003] Rexroth company applied for the invention patent of DE10037114A1. In this patent, four waist-shaped grooves are arranged on the distribution plate of the hydraulic transformer, and the corresponding hydraulic circuit is specially designed. The hydraulic transformer cooperates with the designed hydraulic circuit to improve the voltage transformation to a certain extent However, the hydraulic transformer distribution still faces the "vibration and noise" and "interface problems between the valve plate and the rear end cover" described in "The Development Status of Hydraulic Transformers"

At present, there is still no good solution at home and abroad

Images