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A hydraulic locking oil circuit, construction machinery hydraulic system and control method thereof

A technology of construction machinery and hydraulic systems, applied in 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

Active Publication Date: 2022-06-07
SANY HEAVY MACHINERY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 make it move. Since the operating handle is not locked, the corresponding control unit is controlled. Then there is movement, which is likely to cause accidents such as collisions and rollovers.

Method used

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  • A hydraulic locking oil circuit, construction machinery hydraulic system and control method thereof
  • A hydraulic locking oil circuit, construction machinery hydraulic system and control method thereof
  • A hydraulic locking oil circuit, construction machinery hydraulic system and control method thereof

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Embodiment Construction

[0029] In order to make the purposes, 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 with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations.

[0030] Thus, the following detailed description of the embodiments of the invention provided in the accompanying drawings are not intended to limit the scope of the invention as claimed, but are merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary s...

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Abstract

The invention provides a hydraulic locking oil circuit, a construction machinery hydraulic system and a control method thereof, belonging to the technical field of construction machinery. The hydraulic locking oil circuit includes: oil inlet P, oil return T, handle hydraulic assembly and solenoid valve, the oil inlet of the handle hydraulic assembly is connected to the oil inlet P, and the oil return port of the handle hydraulic assembly is connected to the oil return T When it is turned on, the solenoid valve is set on the oil inlet passage P, and the solenoid valve is used to control the flow of hydraulic oil in the oil inlet passage P. The construction machinery hydraulic system includes the above-mentioned hydraulic locking circuit, construction machinery body, controller and locking device. The control method of the hydraulic system of construction machinery is applied to the hydraulic system of construction machinery mentioned above. The present invention can realize the effective operation of the handle to the hydraulic components of the handle by controlling the on-off of the solenoid valve, so as to avoid the occurrence of major accidents.

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 operation of the operating handle can realize the rotation of construction machinery platforms such as excavators, boom lifting, boom lowering, stick excavation, and stick unloading. , bucket digging, bucket unloading and other actions that have nothing to do with walking. [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 operation handle and make it move. Since the operation handle is not locked, the corresponding control unit is controlled. And then the action occurs, which is likely ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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