Hydraulic system of telescopic boom, telescopic boom and engineering vehicle

A technology of hydraulic system and telescopic boom, which is applied in the field of hydraulic system, and can solve problems such as jitter and large difference in oil circuit flow, and achieve the effect of reducing jitter, reducing jitter, saving oil circuit and control components

Pending Publication Date: 2020-10-30
HUNAN SHUANGDA ELECTROMECHANICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the boom is telescopic, it is driven by multiple telescopic oil cylinders, and the flow difference between the oil circuits is large, resulting in jitter

Method used

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  • Hydraulic system of telescopic boom, telescopic boom and engineering vehicle
  • Hydraulic system of telescopic boom, telescopic boom and engineering vehicle
  • Hydraulic system of telescopic boom, telescopic boom and engineering vehicle

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Embodiment Construction

[0027] It should be noted that, in the case of no conflict, the embodiments in the present application and the technical features in the embodiments can be combined with each other, and the detailed description in the specific embodiment should be understood as an explanation of the present application, and should not be regarded as an explanation of the present application. Undue Restriction of Application.

[0028] In the description of the embodiments of this application, the orientations or positional relationships of "upper", "lower", "left", "right", "front", "back" are based on the attached Image 6 It should be understood that these orientation terms are only for the convenience of describing the application and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be configured in a specific orientation, and operation and therefore should not be construed as limiting the application.

[0...

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PUM

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Abstract

The invention discloses a hydraulic system of a telescopic boom, the telescopic boom and an engineering vehicle. The hydraulic system comprises a first oil way, multi-stage telescopic cylinders, a second oil way, a balance valve, a second one-way valve, a throttling valve, a third oil way and a control oil way; rodless cavities of the telescopic cylinders are communicated with the first oil way, and synchronous oil inlet or oil return is conducted on the rodless cavities of the telescopic cylinders through the first oil way; rod cavities of the telescopic cylinders communicate with the secondoil way, and synchronous oil inlet or oil return is conducted on the rod cavities of the telescopic cylinders through the second oil way; the balance valve is arranged on the first oil way, and the control oil way communicates with the control end of the balance valve and the second oil way; and the third oil way is connected between the first oil way and the second oil way, the second one-way valve and the throttling valve are arranged on the third oil way, the throttling valve is arranged on the oil outlet side of the second one-way valve, and oil in the third oil way can flow to the first oil way through the second one-way valve. According to the hydraulic system of the telescopic boom, the telescopic boom and the engineering vehicle, shaking can be effectively reduced.

Description

technical field [0001] The present application relates to a hydraulic system, in particular to a hydraulic system of a telescopic boom, a telescopic boom and an engineering vehicle. Background technique [0002] In the prior art, the equipment used for maintenance operations such as aircraft deicing is generally a maintenance vehicle. The maintenance vehicle mainly includes an automobile chassis, a slewing mechanism, a turntable, a jib, a luffing mechanism and a working bucket. The jib includes a main arm And the flying arm connected to the end of the main arm, the luffing mechanism includes the main luffing mechanism and the flying arm luffing mechanism, the slewing mechanism is installed on the chassis of the car, the turntable is installed on the slewing mechanism, the jib is installed on the turntable, the main luffing mechanism The mechanism is installed between the turntable and the main arm to change the pitch angle of the main arm. The flying arm luffing mechanism is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B11/22F15B13/06F15B1/02B66C23/693B66F11/04
CPCB66C23/705B66F11/046F15B1/024F15B11/22F15B13/06F15B2211/212F15B2211/41F15B2211/455
Inventor 卿丽纯郭方云李红术陈国平
Owner HUNAN SHUANGDA ELECTROMECHANICAL CO LTD
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