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Hydraulic control system capable of increasing output pressure

A hydraulic control system and output pressure technology, which is applied in fluid pressure converters, fluid pressure actuating devices, mechanically driven excavators/dredgers, etc., and can solve obstacles in the operation process, bucket shutdown, main pumps and complete machines Problems such as performance impact, to achieve the effect of increasing digging force, improving output pressure, and increasing output pressure

Pending Publication Date: 2021-11-23
SANY HEAVY MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, excavators often encounter harsh working conditions during the construction process. For example, when digging into frozen soil, hard soil, hard rocks, etc., it will be impossible to continue digging, causing the bucket to stop working, and the operation process is affected. serious hindrance
[0004] In order to solve the above problems, the existing technology often increases the digging force by increasing the setting pressure of the main relief valve in the hydraulic control system, but the way of increasing the pressure of the main relief valve will have a negative impact on the performance of the main pump and the whole machine. Influence, easy to affect the service life of hydraulic components in the hydraulic control system

Method used

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  • Hydraulic control system capable of increasing output pressure
  • Hydraulic control system capable of increasing output pressure
  • Hydraulic control system capable of increasing output pressure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] By below figure 1 A hydraulic control system having an increased output pressure is described, including the main valve 1 in the hydraulic control oil path, and the oil supply main path 100 in which the oil cylinder 2 is performed, and the main valve 1 and the drill cylinder 2 are connected. The pressing unit 3, the input terminal of the supercharcharobe 3 is provided with a first switch unit 4 that is controlled by the output pressure of the main valve 1, and the supercharging unit 3 is turned on, and the pressure regulatory unit 5 is turned on, and the oil main road 100 is controlled. The second switch unit 6 of the supercharcharging unit 3.

[0048] The hydraulic control system of the present embodiment, since the main valve 1 and the oil supply main path 100 in which the oil cylinder 2 is performed and the booster unit 3 is connected, and therefore, the supercharged unit 3 can be used instead of the oil supply main road 100 pairs when necessary. The cylinder 2 is perfor...

Embodiment 2

[0086] like image 3 As shown, the embodiment is similar to the embodiment, and the oil passage 100 and the booster oil passage 32 are connected to the rod cavity of the oil cylinder 2, and the return main road 200 is connected. The rod cavity of the cylinder 2.

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PUM

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Abstract

The invention relates to the technical field of hydraulic control of operation equipment, in particular to a hydraulic control system capable of increasing output pressure. The hydraulic control system comprises a main valve and an execution oil cylinder in a hydraulic control oil path, wherein an oil supply main path between the main valve and the execution oil cylinder is communicated with a pressurization unit in parallel, the input end of the pressurization unit is provided with a first switch unit controlled by the output pressure of the main valve, the pressurization unit is communicated with a pressure regulation and control unit, and the oil supply main path is provided with a second switch unit controlled by the pressurization unit. According to the hydraulic control system capable of increasing the output pressure, the maximum excavating force of an excavator can be increased on the premise that the pressure of a main overflow valve is not changed, and it is avoided that the overall performance of the hydraulic control system is influenced.

Description

Technical field [0001] The present invention relates to a work machine hydraulic control technology, and in particular relates to a hydraulic control system output pressure is increased. Background technique [0002] In the prior art, also known as an excavation machine excavators, or said shovel, bucket digging with machine above or below the bearing surface of the material, and loading or unloading the transport vehicle to the earth moving machinery stockyard. Excavators material is mainly soil, coal, sand and soil and rock through the pre-release. From the development of construction machinery in recent years, the development of relatively fast excavators, excavator construction machinery has become one of the most important construction projects. [0003] However, excavators often encounter relatively poor working conditions in the construction process, such as when dug soil, hard soil, hard stone, the situation will not continue digging move, causing the bucket downtime, mak...

Claims

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Application Information

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IPC IPC(8): F15B3/00F15B11/08F15B13/042E02F3/42E02F9/22
CPCF15B11/08F15B3/00F15B13/042F15B13/0426E02F3/422E02F9/2267F15B2211/205F15B2211/505
Inventor 方锡彬韩海超尚华
Owner SANY HEAVY MACHINERY