Bucket rod regeneration structure and excavator
A stick and regenerative valve technology, which is applied in the direction of mechanically driven excavators/dredgers, etc., to achieve the effects of reducing structural size, improving coordination, and simple structure
Active Publication Date: 2013-01-09
SUOTE TRANSMISSION EQUIP
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Problems solved by technology
[0003] Aiming at the above-mentioned problems existing in the existing arm regeneration spool, we now provide an arm regeneration structure and an excavator with a simple structure to overcome the shaking phenomenon when the excavator moves on the ground.
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[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.
[0026] Such as Figure 1 to Figure 3 As shown, the present invention is a stick regeneration structure, which includes a regeneration valve core 1, a regeneration function valve core 2, a first valve plate 3 and a second valve plate 4, and the first valve plate 3 is formed with a stick cylinder The first chamber 31 connected to the rod chamber 51 of 5 and the second chamber 32 connected to the rodless chamber 52 of the arm cylinder 5; the regenerative valve core 1 is connected to the first chamber 31 and the second chamber 32 respectively , the regenerative spool 1 controls the communication between the first chamber 31 and the second chamber 32 by moving axially on the first valve plate 3 under the control of the pilot pressure, and the first chamber 31 and the regenerative spool 1 The connect...
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The invention discloses a bucket rod regeneration structure and belongs to the technical field of control structures of excavator hydraulic systems. The bucket rod regeneration structure comprises a regeneration valve core, a regeneration function valve core, a first valve sheet and a second valve sheet, wherein a first cavity connected with a rod cavity of a bucket rod cylinder and a second cavity connected with a rodless cavity of the bucket rod cylinder are formed on the first valve sheet; and a third cavity connected with the first cavity and a fourth cavity connected with an oil tank are formed on the second valve sheet. The bucket rod regeneration structure further comprises a pressure detection device for detecting pressure of the second cavity, wherein the pressure detection device comprises an action end, an elastic part and an extension part controlled by pilot pressure. The bucket rod regeneration structure has the advantages that regeneration opening and regeneration closing can be automatically achieved by means of pressure of the rodless cavity, vibration generated when an excavator moves on the ground can be eliminated, the piston structure reduces structural dimension, structural dimension of a spring is reduced simultaneously, and the bucket rod regeneration structure is simple in structure and small in pressure loss.
Description
technical field [0001] The invention relates to a control structure of an excavator hydraulic system, in particular to a stick regeneration structure and an excavator. Background technique [0002] The stick is an important part of the working device of the excavator. When the stick is in the digging action, due to its own gravity, the falling speed is too fast, which causes the oil return speed of the rod chamber to be greater than the oil supply speed of the rodless chamber, causing the rodless chamber to generate Air suction phenomenon. In order to overcome this problem, stick regeneration technology has appeared, through a regenerative spool, the hydraulic oil in the oil return path of the rod chamber is supplied to the rodless chamber, so as to balance the oil return speed of the rod chamber and the oil supply speed of the rodless chamber , but the structure of the existing regenerative spool is complex, requiring multiple sets of springs for control, complex debugging...
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IPC IPC(8): E02F3/43
Inventor 曹东辉张国通张涛
Owner SUOTE TRANSMISSION EQUIP