Dual-pump hydraulic servo control mechanism

Abstract

The invention belongs to the technical field of hydraulic servo control transmission equipment, and relates to a control mechanism, in particular to a dual-pump hydraulic servo control mechanism. The dual-pump hydraulic servo control mechanism comprises a speed control handle, a steering control handle, a first hydraulic servo control valve, a second hydraulic servo control valve, a first plunger pump, a second plunger pump, a first motor and a second motor. An oil outlet port A1 of the speed control handle is connected with an oil inlet port Y1 of the first hydraulic servo control valve and an oil inlet port Y5 of the second hydraulic servo control valve through hydraulic pipelines respectively. An oil outlet port A2 of the steering control handle is connected with an oil inlet port Y3 of the first hydraulic servo control valve and an oil inlet port Y6 of the second hydraulic servo control valve through hydraulic pipelines respectively. According to the dual-pump hydraulic servo control mechanism, a steering system and a walking system are integrated, the functions of hydraulic walking steering, in-situ rotation and linear walking are achieved, the reasonability of the equipment structure is improved, and the size of the whole mechanism is decreased.

Description

technical field [0001] The invention relates to a control mechanism, specifically a double-pump hydraulic servo control mechanism, which belongs to the technical field of hydraulic servo control transmission equipment. Background technique [0002] In the specific application of construction machinery, in some working conditions, one or more actuators need to perform compound motion at different speeds at the same time. Especially in the specific operation of the crawler crane, there are many working conditions, and the corresponding actuators need to perform more compound actions, which undoubtedly increases the performance requirements of the crawler crane hydraulic system. [0003] At present, most of the manual control double pumps are used to control the forward and reverse of the car. Due to the different positions of the two handles, the installation positions of the double pumps are fixed, and the two pumps need to be installed in different directions, resulting in t...

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Problems solved by technology

[0003] At present, most of the manual control double pumps are used to control the forward and reverse of the car. Due to the different positions of the two handles, the installation positions of the double pumps are fixed, and the two pumps need to be installed in different directions, resulting in the opposite direction of rotation of the pumps. , the reversing positions of the two handles are opposite, the required torque is large and the vibration is large; the steering system and the walking system in the current manual control system are two separate systems; the double pumps need to be controlled separately

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