Excavator convergent flow control system and excavator

A control system and excavator technology, applied in the direction of mechanically driven excavators/dredgers, etc., can solve problems such as limiting the speed of bucket excavation, and achieve the effect of increasing excavation speed and improving work efficiency

CN102828536AInactive Publication Date: 2012-12-19SANY HEAVY MACHINERY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2012-12-19
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an excavator convergent flow control system and an excavator, wherein the excavator convergent flow control system comprises a main oil pump, a convergent flow pump, a moving arm main valve, a bucket main valve and a first convergent flow switch valve, wherein the main oil pump is respectively connected with an oil inlet of the moving arm main valve and an oil inlet of the bucket main valve, a work oil opening of the moving arm main valve is connected with a moving arm oil cylinder of the excavator, a work oil opening of the bucket main valve is respectively connected with a bucket oil cylinder of the excavator, the first convergent flow switch valve has an on-off function and is provided with an oil inlet, an oil outlet, a control end and an oil return opening, the oil inlet of the first convergent flow switch valve is connected with the convergent flow pump, the oil outlet of the first convergent flow switch valve is connected with the moving arm oil cylinder of the excavator and the bucket oil cylinder of the excavator, and the oil return opening of the first convergent flow switch valve is connected to an oil tank. The excavator convergent flow control system and the excavator have the advantages that the excavating convergent flow of a bucket can be realized, the excavating speed is accelerated, and the work efficiency of the excavator is improved.
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Description

technical field

[0001] The invention relates to the field of construction machinery, in particular to an excavator confluence control system and an excavator with the confluence control system. Background technique

[0002] At present, the excavators of more than 10 tons on the market use dual-pump positive flow control, and the boom lifting and stick excavation and unloading use dual-pump confluence control, but the bucket excavation uses a single pump for oil supply; this limits the excavation of the bucket. speed. According to the test results of a certain model test, the bucket excavation speed is 3.6sec, the bucket unloading speed is 2.1sec, and the excavation speed is reduced by 40% relative to the unloading speed.

[0003] How to improve the digging speed of the excavator is the main factor to improve the digging efficiency. The existing control system for bucket excavation and unloading includes: a pilot valve for controlling the bucket excavation to be in an ascen...

Examples

Embodiment Construction

[0030] It should be noted that the embodiments of the present invention and the features of the embodiments may be combined with each other under the condition of no conflict. The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0031] The basic idea of ​​the present invention is: in the prior art, the excavator bucket excavation is supplied by a single pump, and the excavation degree of the bucket is low, which affects the excavation efficiency. The present invention aims to improve the hydraulic oil circuit structure of the excavator confluence control system , Increase the bucket excavation confluence, increase the excavation speed, and improve the work efficiency of the excavator.

[0032] Below in conjunction with the accompanying drawings, the preferred embodiments of the present invention will be described in further detail:

[0033] like figure 1 As shown, the present invention ...