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Excavator

A technology of excavator and walking mechanism, which is applied in the field of excavators, can solve problems such as machine instability, and achieve the effect of stable work

Active Publication Date: 2015-09-02
LIUZHOU LIUGONG EXCAVATORS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the center of gravity of the excavator changes back and forth due to the up and down movement of the boom during the operation process of the existing integral fixed counterweight excavator, and to construct an excavator that can be used to adjust the center of gravity of the excavator. Excavator with removable counterweight

Method used

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Embodiment Construction

[0021] The specific implementation will be described below in conjunction with the accompanying drawings.

[0022] The lower part of the excavator is a walking mechanism, and the upper mechanism is rotatably installed on the lower walking mechanism. The upper mechanism includes a slewing platform, on which a power system such as an engine system is installed, and the power system drives the hydraulic system of the excavator. The hydraulic system includes a hydraulic pump on the slewing platform, a control valve, and a traveling motor on the traveling mechanism. The travel motor is connected with the hydraulic control valve, hydraulic oil tank, hydraulic pump, etc. through the pipeline to realize the travel drive of the lower travel mechanism. The boom of the excavator is installed at the front of the slewing platform, and the counterweight is installed at the rear. The end of the boom is hinged to the slewing platform and is linked by the boom cylinder. The expansion and contr...

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Abstract

The invention relates to an excavator and aims at solving the problem that barycenter of an existing excavator moves back and forth when a moving arm ascends and descends. The excavator comprises an upper-portion mechanism, a traveling mechanism on the lower portion, and a balance weight oil cylinder, the upper-portion mechanism comprises a rotary platform rotatably mounted on the traveling mechanism, a balance weight is mounted on the rear portion of the rotary platform, the top of the balance weight is rotatably connected with the rotary platform, and one end of the balance weight oil cylinder is hinged to the lower portion of the balance weight while the other end of the same is hinged to the rotary platform. When the moving arm of the excavator descends, the balance weight oil cylinder jacks and pushes the balance weight to enable the lower portion of the same to move backwards, so that the problem of stability lowering caused by forward moving of the barycenter of the excavator due to descending of the moving arm is avoided; when the moving arm ascends, the balance weight oil cylinder retracts, and the lower portion of the balance weight rotates around the upper portion of the balance weight oil cylinder to swing forwards, so that changing of the barycenter of the excavator caused by ascending and descending of the moving arm can be adjusted to maintain the barycenter of the excavator relatively stable.

Description

technical field [0001] The invention relates to a construction machine, in particular to an excavator. Background technique [0002] The lower part of the existing excavator is a running mechanism, and the upper part is a slewing mechanism, and the slewing mechanism is rotatably installed on the running mechanism. A power system is installed on the slewing mechanism, and the power system drives the hydraulic system of the excavator. The swing arm of the excavator is installed at the front of the slewing mechanism, and the counterweight is fixed at the rear. The rear end of the boom is hinged with the slewing mechanism and is controlled by The hydraulic cylinder is connected, and the expansion and contraction of the hydraulic cylinder pushes the boom to rotate up and down around the hinged end. [0003] At present, the counterweight on the excavator is basically integral, and the position of its center of gravity cannot be adjusted after installation. During the operation of...

Claims

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Application Information

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IPC IPC(8): E02F9/18E02F9/22
Inventor 郑贤林深才蒋云东
Owner LIUZHOU LIUGONG EXCAVATORS
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