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Method and device for detecting efficiency parameters of hydraulic system and engineering machinery having the device

A hydraulic system and efficiency technology, applied in the field of testing hydraulic system efficiency parameters, can solve the problems of inability to accurately control the hydraulic system flow, impair the quality of fine operation, and it is difficult for the control device to achieve the intended purpose, so as to increase the total flow of hydraulic oil. Cardinality, the effect of reducing errors

Active Publication Date: 2009-12-16
SANY HEAVY IND CO LTD (CN)
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is impossible to determine the actual efficiency parameter value of each hydraulic component of the hydraulic system according to the use state of the hydraulic system, and then it is impossible to accurately control the flow of the hydraulic system
[0010] Furthermore, when hydraulic engineering machinery is used to perform fine movements, it is difficult for the control device of the construction machinery to achieve the intended purpose, thereby reducing the reliability and efficiency of the fine movements of the construction machinery, and also detrimental to the quality of fine operations.

Method used

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  • Method and device for detecting efficiency parameters of hydraulic system and engineering machinery having the device
  • Method and device for detecting efficiency parameters of hydraulic system and engineering machinery having the device
  • Method and device for detecting efficiency parameters of hydraulic system and engineering machinery having the device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] The method for detecting the efficiency parameters of the hydraulic system provided by Embodiment 1 includes the following steps:

[0053] S210, adjusting the hydraulic system of the excavator to a predetermined working condition, including adjusting the rotational speed of the engine 101 to the rated rotational speed of the hydraulic pump 102, adjusting the displacement of the hydraulic pump 102 to the maximum displacement, keeping the external load of the excavator, and setting the hydraulic cylinder 104 Adjust to the shortest position.

[0054] S220, make the hydraulic cylinder 104 extend at the fastest speed through the control device 105, detect the elongation time required for the hydraulic cylinder 104 to extend from the shortest position to the longest position, and use the elongation time as an actual power parameter value.

[0055] S230. Determine an actual efficiency parameter value of the hydraulic system according to the actual power parameter value and a p...

Embodiment 3

[0070] The device for detecting the efficiency parameters of the hydraulic system provided by Embodiment 3 also includes a sensor 601 and a controller 602. For the convenience of description, a hydraulic actuator 603 is also shown; the controller 602 stores predetermined power parameter values ​​and predetermined efficiency parameters value, the predetermined power parameter value is the power parameter value output by the hydraulic actuator of the hydraulic system under the predetermined use state and predetermined working condition; the predetermined hydraulic system efficiency parameter value is the hydraulic system in the predetermined Efficiency parameter values ​​for the state of use and predetermined operating conditions.

[0071] Under the predetermined working condition, the sensor 601 can transmit a power signal to the controller 602 according to the action of the hydraulic actuator 603, and the controller 602 can detect the actual power parameter value output by the ...

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Abstract

The invention discloses a method and a device for detecting efficiency parameters of a hydraulic system, and engineering machinery having the device for detecting efficiency parameters of a hydraulic system. The method for detecting efficiency parameters of the hydraulic system comprises: detecting actual power parameter values output by a hydraulic actuator of the hydraulic system; obtaining actual efficiency parameter values according to the actual power parameter values, a predefined power parameter value and a predefined hydraulic system efficiency parameter value, wherein the predefined hydraulic system efficiency parameter value is efficiency parameter value under predefined use state and predefined working condition. Having the device for detecting efficiency parameters of a hydraulic system, a control device of the engineering machinery is capable of calibrating and correcting the control datum, according to actual efficiency parameter values of the hydraulic system obtained through real-time detection, thereby realizing micro-adjustment to the engineering machinery, improving reliability and efficiency of fine action, and guaranteeing quality of fine operation.

Description

technical field [0001] The invention relates to hydraulic technology, in particular to a method and device for detecting efficiency parameters of a hydraulic system, and also relates to a construction machine with the device. Background technique [0002] At present, engineering construction not only puts forward higher requirements for the power and dynamics of construction machinery; moreover, in order to complete fine work, it also puts forward requirements for construction machinery to be able to perform fine movements. For example: in the excavation operation, not only the excavator is required to have a large driving force and adaptability, but also the excavator is required to have the ability of micro-adjustment to cope with the complex operating environment; in the lifting container operation, not only the crane is required to have The large lifting capacity also requires the crane to have the function of micro-adjustment during hoisting to complete the fine movemen...

Claims

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Application Information

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IPC IPC(8): F15B19/00
CPCE02F9/2203
Inventor 周翔曹显利
Owner SANY HEAVY IND CO LTD (CN)
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