Valve outer confluence hydraulic system and excavator

A hydraulic system and hydraulic technology, which is applied in the field of external confluence hydraulic system and excavator, can solve the problems of long oil flow distance, low energy utilization rate, large pressure loss, etc., and achieve small energy loss, high energy utilization rate, The effect of small pressure loss

Pending Publication Date: 2021-01-12
SHANDONG LINGONG CONSTR MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, due to the complexity of the internal pipeline of the main valve, when the main pump supplies oil to the breaker through the main valve, the oil flows in the internal pipeline of the main valve for a long distance, resulting in large pressure loss and low energy utilization.

Method used

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  • Valve outer confluence hydraulic system and excavator
  • Valve outer confluence hydraulic system and excavator
  • Valve outer confluence hydraulic system and excavator

Examples

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no. 1 example

[0042] Please refer to Figure 1-Figure 4 , this embodiment provides an external valve confluence hydraulic system, which includes: a hydraulic energy supply module, a start module, a confluence module, a control module, a main valve 10 and a breaker 80, wherein:

[0043] The hydraulic energy supply module includes at least two hydraulic pumps, and each hydraulic pump can supply oil to the main valve 10;

[0044] The confluence module is connected in parallel with the main valve, and the confluence module is connected between the starting module and the breaker 80, and each hydraulic pump is connected with the confluence module;

[0045]The start-up module is connected to the confluence module through the control module. After the start-up module is started, the control module controls the confluence module so that n hydraulic pumps supply oil to the breaker 80 through the confluence module. n is a natural number, and n is greater than or equal to zero and less than or equal t...

no. 2 example

[0063] Please refer to figure 1 and figure 2 , this embodiment provides an out-of-valve confluence hydraulic system, which is an improvement on the basis of the out-of-valve confluence hydraulic system provided in the first embodiment above, and the technical content disclosed in the first embodiment will not be described repeatedly. The content disclosed in the example also belongs to the content disclosed in this embodiment.

[0064] In this embodiment, the confluence module includes a confluence valve group 33 , and each hydraulic pump communicates with the confluence valve group 33 . Specifically, the confluence valve group 33 includes a plurality of interconnected flow control parts, and each hydraulic pump communicates with a different flow control part, so as to individually control the output flow of each hydraulic pump through different flow control parts. Each flow control part communicates with the main valve 10 in parallel.

[0065] In this embodiment, the cont...

no. 3 example

[0077] Please refer to image 3 and Figure 4 , this embodiment provides an out-of-valve confluence hydraulic system, which is an improvement on the basis of the out-of-valve confluence hydraulic system provided in the first embodiment above, and the technical content disclosed in the first embodiment will not be described repeatedly. The content disclosed in the example also belongs to the content disclosed in this embodiment.

[0078] In this embodiment, the confluence module includes at least two confluence valve blocks, the number of confluence valve blocks is the same as the number of hydraulic pumps, and multiple confluence valve blocks are connected to multiple hydraulic pumps in one-to-one correspondence.

[0079] A plurality of hydraulic pumps communicate with the main valve through the main valve pipeline respectively, and each confluence valve block is connected in parallel with the corresponding main valve pipeline. A plurality of confluence valve blocks can be c...

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Abstract

The invention relates to the technical field of excavator hydraulic control, in particular to a valve outer confluence hydraulic system and an excavator. The valve outer confluence hydraulic system comprises a hydraulic energy supply module, a starting module, a confluence module, a control module, a main valve and a breaking hammer, wherein the hydraulic energy supply module comprises at least two hydraulic pumps, and each hydraulic pump can supply oil to the main valve; the confluence module is communicated with the main valve in parallel, the confluence module is connected between the starting module and the breaking hammer, and all the hydraulic pumps are communicated with the confluence module; the starting module is connected with the confluence module through the control module; andafter the starting module is started, the control module controls the confluence module so that the n hydraulic pumps can supply oil to the breaking hammer through the confluence module, n is a natural number, and n is larger than or equal to zero and smaller than or equal to the number of the hydraulic pumps. When the valve outer confluence hydraulic system provided by the invention is used forsupplying oil to the breaking hammer, the oil supply requirements of breaking hammers with drill rods of different sizes can be met, the pressure loss is small, and the energy utilization rate is high.

Description

technical field [0001] The invention relates to the field of excavator hydraulic control, in particular to an external valve confluence hydraulic system and an excavator. Background technique [0002] An excavator, also known as an excavating machine or a backhoe, is an earth-moving machine that uses a bucket to dig materials higher or lower than the bearing surface, and loads them into transport vehicles or unloads them to the stockyard. The materials excavated by the excavator are mainly soil, coal, sediment, and pre-loose soil and rock. The development of excavators is relatively fast, and excavators have become one of the main construction machinery in engineering construction. [0003] When the breaker is installed on the excavator, the breaker can be used for crushing operations. The excavator supplies oil to the breaker through the hydraulic system. In the prior art, the hydraulic system includes a main valve and a main pump. The main valve is connected with multip...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02F9/22E02F3/04E02F5/30
CPCE02F3/04E02F5/30E02F9/22E02F9/2264E02F9/2267
Inventor 迟峰董立队苗国华张贵贤杨典作刘淑强
Owner SHANDONG LINGONG CONSTR MACHINERY
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