Adjustable pressure-proof multihead pump

Abstract

The invention provides an adjustable pressure-proof multihead pump. The pump has good pressure-proof property and small fluctuation of oil supply amount, and the flow can be flexibly adjusted and controlled within certain range according to the change of the viscosity of hydraulic oil caused by the change of different seasons and temperatures to ensure that the pump can always work under best condition. The pump comprises a multihead plunger pump, an adjustment device and a base, an inclined disk and a mandrel of the multihead plunger pump are movably connected by a central pin, the mandrel of the multihead plunger pump passes through central holes of an inclined disk support, a pushing disk and a platen of the adjustment device, a pump body and a base body of the multihead plunger pump are fixedly connected by bolts, the inclined disk support of the adjustment device and the inclined disk of the multihead plunger pump are movably connected by offset pins, an outer circle of the pushing disk of the adjustment device is slidingly matched with an inner circle of the base body, the platen of the adjustment device and the base body of the base are fixedly connected by bolts, an adjustment bolt of the adjustment device is arranged in an adjustment hole of the base and is firmly locked and positioned by a compression nut of the base.

Description

technical field [0001] The invention relates to a multi-head hydraulic pump in hydraulic transmission and control, in particular to an adjustable pressure-resistant multi-head pump. Background technique [0002] The hydrostatic technology is widely used in the machinery manufacturing industry. In the hydrostatic technology, there are high requirements on the pressure resistance performance of the hydraulic pump and the stability of the oil supply. The multi-head pumps in the hydraulic pumps currently used are both There are also gear pumps and plunger pumps. The pressure resistance of the gear pump is not ideal, and the flow of the plunger pump fluctuates during the working process, and the flow of these two types of pumps is difficult to adjust and control according to the actual working conditions. [0003] A multi-head pump with a patent application number of 200810059738.X belongs to the category of mechanical processing, specifically a multi-head pump, which is charact...

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Problems solved by technology

[0005] However, the multi-head pump whose patent application number is 200810059738.X is a quantitative pump, and its structure cannot make the flow of each oil outlet adjusted and controlled.

[0006] The variable variable multi-head pump with the patent number 01266521.5 only has the number of oil outlets that can be changed, and is essentially a quantitative pump. Due to the structure of the crankshaft rotating and compressing the spring, the oil supply fluctuates greatly, which affects the working accuracy of the static pressure mechanism. and stability

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