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A confluence switching system of multiple oil supply units

A technology of oil supply unit and switching system, which is applied in the field of hydraulic system, can solve the problems of large pulsation, reduce the working efficiency of hydraulic system, reduce the fretting performance of actuators, etc., and achieve the effect of reducing pulsation, improving speed regulation, and running smoothly

Active Publication Date: 2018-08-21
XUZHOU HEAVY MASCH CO LTD
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  • Description
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Problems solved by technology

[0003] For example, the flow required by a single actuator is very small, and when two pumps work at the same time, the flow provided by a single pump is only half of the flow required by the actuator. Due to the leakage of the hydraulic pump, the pulsation is relatively large at a small flow rate. This not only reduces the micro-motion performance of the actuator but also reduces the working efficiency of the hydraulic system

Method used

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  • A confluence switching system of multiple oil supply units
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Embodiment Construction

[0021] The present invention will be described in detail below. In the following paragraphs, different aspects of the embodiments are defined in more detail. Aspects so defined may be combined with any other aspect or aspects unless specifically stated otherwise. In particular, any feature considered to be preferred or advantageous may be combined with one or more other features which are considered to be preferred or advantageous.

[0022] Terms such as "first" and "second" appearing in the present invention are only for convenience of description, to distinguish different components with the same name, and do not indicate a sequence or a primary and secondary relationship.

[0023] From the perspective of improving the micro-motion performance of the actuator, the present invention provides a confluence switching system for multiple oil supply units. In one embodiment, as figure 1 with figure 2 As shown, it includes a confluence component 7 and at least two oil supply un...

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Abstract

The invention relates to a confluent switching system with multiple oil supply units. The confluent switching system comprises a confluent component (7) and at least two oil supply units, wherein the confluent component (7) is arranged between the oil supply units. Confluent oil supply or independent oil supply can be selectively switched based on parameters for representing pilot control oil pressure in the oil supply units. When an executive element of the confluent switching system with the multiple oil supply units needs high-speed running, the flow demand of the whole system can be met by confluent oil supply. When the executive element needs low-speed running, the confluent oil supply mode is switched into an independent oil supply mode to reduce pulsation of the executive element at small flow, so that the executive element more stably runs, and the speed regulation property, the inching property and the energy-saving property of a hydraulic system are improved.

Description

technical field [0001] The invention relates to the technical field of hydraulic systems, in particular to a confluence switching system of multiple oil supply units. Background technique [0002] In the hydraulic system design, in order to increase the speed of the actuator, the displacement of the hydraulic pump needs to be increased. Large displacement hydraulic pumps are usually limited by installation space, cost of use, and application technology. Therefore, a dual-pump oil supply scheme is often used. The dual-pump oil supply hydraulic system increases the speed of the actuator, but also reduces the micro-motion performance of the actuator and the efficiency of the hydraulic system. [0003] For example, the flow required by a single actuator is very small, and when two pumps work at the same time, the flow provided by a single pump is only half of the flow required by the actuator. Due to the leakage of the hydraulic pump, the pulsation is relatively large at a small...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B13/06F15B11/042
CPCF15B11/042F15B13/06F15B2211/40523F15B2211/40546
Inventor 胡小东周彬焦国旺
Owner XUZHOU HEAVY MASCH CO LTD
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