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Control system and crane

A control system and crane technology, applied in cranes, load hanging components, transportation and packaging, etc., can solve problems such as pressure holding, unfavorable vehicle safety control, and affecting hoisting performance, so as to prevent outriggers from holding pressure and supporting Inaccurate detection of leg strength, solve the effect of holding back pressure

Active Publication Date: 2016-08-17
SANY AUTOMOBILE HOISTING MACHINERY
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  • Abstract
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AI Technical Summary

Problems solved by technology

However, when the outriggers of the crane are stretched to the maximum value, since the hydraulic oil in the rod chamber is completely excluded, the pressure in the rodless chamber is equal to the driving pressure, which will cause pressure suffocation
At this time, the gravity calculated by the pressure sensors of the upper and lower chambers is far less than the actual load bearing of the outriggers, which is not conducive to the safety control of the whole vehicle, and thus affects the hoisting performance

Method used

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  • Control system and crane
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Embodiment Construction

[0030] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0031] refer to figure 1 , figure 1 It is a flow chart of the steps of an embodiment of the outrigger telescopic control method of the present invention, the method includes the following steps:

[0032] Step S01: According to the pressure information detected by the outrigger pressure detection unit in the upper and lower chambers, determine the gravity on the outrigger;

[0033] Step S02: Calculate the rate of change of the gravity on the outrigger;

[0034] Step S03: Judging whether the rate of change of the gravity of the outrigger when it is extended exceeds a preset first threshold, and determining that the outrigger has been fully extended; if yes, execute step S04; if not, execute step...

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Abstract

The invention discloses a telescoping control method for outriggers, a controller, a control system and a crane. Wherein, the outrigger expansion and contraction control method includes the following steps: according to the pressure information detected by the upper and lower chamber outrigger pressure detection units, determine the gravity on the outrigger; calculate the change rate of the gravity on the outrigger, when the outrigger is in the When the rate of change of the gravitational force during extension exceeds the first threshold, it is determined that the outrigger has been fully extended; the outrigger is controlled to automatically retract a given distance, and at the same time, the outrigger's extension action is locked. The invention can prevent, detect or eliminate the problem of the outrigger holding pressure, avoid the problem of inaccurate detection of the outrigger force caused by the holding pressure, and facilitate the safety control of the whole vehicle.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a control system and a crane. Background technique [0002] Generally speaking, two different pressure sensors are set in the upper cavity and the lower cavity of the outrigger of the crane, and the pressure on the outrigger is determined through the values ​​collected by the two pressure sensors. However, when the outriggers of the crane are extended to the maximum value, since the hydraulic oil in the rod chamber is completely excluded, the pressure in the rodless chamber is equal to the driving pressure, which will cause pressure suppression. At this time, the gravity calculated by the pressure sensors of the upper and lower chambers is far less than the actual load-bearing of the outriggers, which is not conducive to the safety control of the whole vehicle, and then affects the hoisting performance. Contents of the invention [0003] In view of this, the pres...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66C23/78B66C13/18
Inventor 郝子新胡晓中黄大鹏
Owner SANY AUTOMOBILE HOISTING MACHINERY
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