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Big arm control loop

A technology of control circuit and oil return port, which is applied in the direction of fluid pressure actuators, servo motor components, fluid pressure actuation system components, etc. It can solve the problems of no speed regulation setting, hidden dangers of steel structure quality, and large impact, etc., to achieve The effect of adjusting the speed

Active Publication Date: 2021-01-12
MCC BAOSTEEL TECH SERVICE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The knocking system of slag tank trucks generally does not have a speed regulation setting function, resulting in excessive impact during the knocking process, which undoubtedly brings many quality problems to steel structures such as outriggers and frames

Method used

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Embodiment Construction

[0040] The specific implementation manners of the present invention will be described in further detail below in conjunction with the accompanying drawings. These embodiments are only used to illustrate the present invention, not to limit the present invention.

[0041] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying Describes, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and operate in a specific orientation, and therefore should not be construed as limiting the inventio...

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Abstract

The invention relates to the technical field of hydraulic pressure, in particular to a big arm control loop. The big arm control loop comprises a big arm oil cylinder, a tank knocking valve and an integrated valve block, wherein the big arm oil cylinder comprises a rod cavity and a rodless cavity; the tank knocking valve comprises a cartridge valve assembly provided with a valve element stroke adjusting rod and a pilot control valve connected with a control port of the cartridge valve assembly, and a first oil port and a second oil port of the cartridge valve assembly communicate with the rodcavity and the rodless cavity correspondingly; and the integrated valve block comprises a three-position four-way electromagnetic valve, an oil inlet, an oil return port, a first oil inlet and outletport communicating with the rodless cavity and a second oil inlet and outlet port communicating with the rod cavity, a liquid inlet of the three-position four-way electromagnetic valve is connected with the oil inlet, a first liquid outlet and a second liquid outlet of the three-position four-way electromagnetic valve are connected with the first oil inlet and outlet port and the second oil inletand outlet port correspondingly, and a liquid outlet of the three-position four-way electromagnetic valve is connected with the oil return port. By adjusting the valve element stroke adjusting rod ofthe cartridge valve assembly, the opening degree of opening of a valve element of the cartridge valve assembly can be adjusted, the through-flow area of a valve port is controlled, and the tank knocking speed of a big arm is effectively adjusted.

Description

technical field [0001] The invention relates to the field of hydraulic technology, in particular to a boom control circuit. Background technique [0002] In the process of iron and steel smelting, a large amount of by-products - slag will be produced. This slag needs to be transported from the smelter to a fixed place by rail for treatment, and the slag tanker is to undertake converter or electric furnace slag, molten iron pretreatment slag and molten steel refining slag , and then transported to the slag disposal office. After the high-temperature steel slag is transported to a fixed place by a slag tanker, it needs to be automatically tipped to unload the slag, so the stability and reliability of the slag tanker play a vital role. [0003] At present, the boom control system of the slag tanker mainly adopts the cover-type cartridge valve and the multi-way valve technology to realize the speed control of the boom, including the realization of the knocking condition. The k...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B13/02F15B21/00
CPCF15B13/027F15B13/02F15B21/00
Inventor 李福生耿会良李利民张吉胜邵可
Owner MCC BAOSTEEL TECH SERVICE
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