An electro-hydraulic control link mechanism for a loader

A technology of electro-hydraulic control and linkage mechanism, which is applied in the direction of earth mover/shovel, mechanically driven excavator/dredger, construction, etc. Increase the weak points and other issues to achieve the effect of increasing the force transfer ratio, reducing the number of settings, and reducing hinge points

Active Publication Date: 2021-04-02
QINGDAO LOVOL EXCAVATOR
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, multiple links are connected by hinge points, adding points of weakness
When flipping the bucket, the force transmission route is oil cylinder-rocker arm-tie rod-bucket, which needs to meet the requirements of unloading height, unloading distance, bucket retraction angle, and unloading angle. The force transmission efficiency is relatively low, and it is difficult to design it to 100%. Hundreds, due to the mutual influence of the linkage mechanism, some requirements are difficult to meet at the same time

Method used

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  • An electro-hydraulic control link mechanism for a loader
  • An electro-hydraulic control link mechanism for a loader
  • An electro-hydraulic control link mechanism for a loader

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[0029] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0030] It should be noted that the terminology used here is only used to describe specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof.

[0031] Such as image 3 , 4 A loader electro-hydraulic control link mechanism shown in 6 includes a mechanic...

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Abstract

The invention discloses an electro hydraulic control connection rod mechanism for a loader. The electro hydraulic control connection rod mechanism for the loader comprises a mechanical part and a control part; the mechanical part comprises a rotating bucket oil cylinder for connecting a bucket and a swing arm; the control part comprises an operation handle electrically connected with an operationvalve; the operation valve is used for connecting the oil cylinder with a first safety valve; the first safety valve is connected with the rotary bucket oil cylinder and a second safety valve; a compensation valve is connected with the second safety valve and the oil cylinder; the first safety valve, the second safety valve and the compensation valve are electrically connected with the output endof a controller; and the input end of the controller is electrically connected with a swing arm oil cylinder sensor installed on a swing arm oil cylinder and a rotating bucket oil cylinder sensor installed on the rotating bucket oil cylinder.

Description

technical field [0001] The invention belongs to the technical field of engineering machinery, and in particular relates to an electro-hydraulic control link mechanism for a loader. Background technique [0002] As the main product in construction machinery, loaders are crucial to the construction of national infrastructure. Since the birth of the loader, there are various working devices and rich attachments, which can complete various shovel, clamping and grasping tasks. The characteristic of the loader is that the attachment collects materials, and the linkage mechanism lifts the attachment to a certain height, and then unloads the material. [0003] In order to maximize the pull-up force of the attachment, meet the required unloading height and unloading distance, and optimize the force transmission ratio, the design of the connecting rod mechanism is various. For example, 8 connecting rods in forward rotation, 7 connecting rods in forward rotation, 6 connecting rods in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02F3/43
CPCE02F3/435
Inventor 宋洋洋王金华孙长良李明国李艳林孙瑶瑶
Owner QINGDAO LOVOL EXCAVATOR
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