Hydraulic locking oil way, engineering machinery hydraulic system and control method thereof

A technology of construction machinery and hydraulic systems, applied in the direction of mechanical equipment, earth movers/shovels, fluid pressure actuators, etc., can solve problems such as rollovers and collisions, and achieve the effect of avoiding major accidents and achieving effective operation

Active Publication Date: 2020-04-07
SANY HEAVY MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, during the walking process of construction machinery, especially wheeled excavators and loaders, the walking speed is fast, and it is easy to trigger the operating handle and

Method used

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  • Hydraulic locking oil way, engineering machinery hydraulic system and control method thereof
  • Hydraulic locking oil way, engineering machinery hydraulic system and control method thereof
  • Hydraulic locking oil way, engineering machinery hydraulic system and control method thereof

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Embodiment Construction

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

[0030] Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art wi...

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PUM

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Abstract

The invention provides a hydraulic locking oil way, an engineering machinery hydraulic system and a control method thereof, and belongs to the technical field of engineering machinery. The hydraulic locking oil way includes an oil inlet path P, an oil return path T, a handle hydraulic assembly and an electromagnetic valve, wherein an oil inlet of the handle hydraulic assembly is in communication with the oil inlet path P; an oil return port of the handle hydraulic assembly is in communication with the oil return path T; the electromagnetic valve is arranged on the oil inlet path P; and the electromagnetic valve is used for controlling the circulation of hydraulic oil in the oil inlet path P. The engineering machinery hydraulic system comprises the hydraulic locking oil way, an engineeringmachinery body, a controller and a locking device. The control method of the engineering machinery hydraulic system is applied to the engineering machinery hydraulic system. Whether the handle hydraulic assembly is effectively operated by the handle can be realized by controlling the on-off state of the electromagnetic valve, so that the occurrence of major accidents is avoided.

Description

technical field [0001] The invention relates to the technical field of construction machinery, in particular to a hydraulic locking oil circuit, a construction machinery hydraulic system and a control method thereof. Background technique [0002] Construction machinery such as loaders, backhoe loaders, and wheeled excavators are all designed with operating handles. The actions of the operating handles can realize the rotary movement of excavators and other construction machinery platforms, boom lifting, boom lowering, stick digging, and stick unloading. , Bucket digging, bucket unloading and other unrelated walking actions. [0003] At present, during the walking process of construction machinery, especially wheeled excavators and loaders, the walking speed is fast, and it is easy to trigger the operating handle and make it move. Since the operating handle is not locked, the corresponding control unit is controlled. Further action occurs, which is likely to cause accidents ...

Claims

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Application Information

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IPC IPC(8): F15B13/01F15B13/044E02F9/22
CPCF15B13/01E02F9/2267E02F9/226F15B2013/0448
Inventor 林国富刘兵王东林
Owner SANY HEAVY MACHINERY
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