Automatic testing system and automatic testing method for operation of hydraulic wrench

A hydraulic wrench, automatic inspection technology, applied in the direction of instruments, measuring devices, force/torque/work measurement instrument calibration/testing, etc., can solve problems such as the impact of wind turbine quality, and achieve the effect of preventing potential hidden dangers

Pending Publication Date: 2017-11-28
YUANJIAN WIND POWER JIANGYINENVISION ENERGY CO LTD
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  • Abstract
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Problems solved by technology

[0003] The present invention aims at the problem that whether the installation of high-strength bolts is in place affects the quality of wind turbines, and proposes an automatic inspection system and method for hydraulic wrench operations. The torque operation process of high-strength bolts can be traced; the torque operation state is visualized; the torque operation process system is fool-proof ;Tool status abnormal automatic alarm;Tool life cycle management

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  • Automatic testing system and automatic testing method for operation of hydraulic wrench

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Embodiment Construction

[0012] Such as figure 1 The schematic block diagram of the structure of the hydraulic wrench operation automatic inspection system of the present invention is shown. The upper computer is equipped with a process formula table. According to the type of fan, the process formula table provides the torque value required for bolt tightening, and the calibration of the wrench head is also provided. The report formula converts the torque value into a pressure value and sends it to the PLC controller. The PLC converts the pressure value into a servo motor drive electrical signal and sends it out. The servo motor drives the hydraulic pump to work. A pressure sensor is added to the outlet of the hydraulic pump, and the pressure sensor collects the pressure signal and feeds it back to the PLC. The PLC compares the pressure value corresponding to the output torque value, adjusts the output to the servo motor, and automatically adjusts the pressure of the hydraulic pump to ensure that the h...

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Abstract

The invention relates to an automatic testing system and an automatic testing method for operation of a hydraulic wrench, wherein the system and the method are applied in screw tightening and bolt maintenance operations in a wind power industry. Through recording a torque value and a bolt rotating angle when bolt tightening is finished in bolt tightening or checking, process quality control and long-term big data analysis are realized. Furthermore the automatic testing system is preset through a technical formula, thereby realizing automatic pressure adjustment, realizing an integral foolproof function through automatic determining bolt tightening, and preventing bolt torque exceeding, torque insufficiency and bolt omission caused by man errors. The automatic testing system and the automatic testing method further have advantages of preventing hydraulic tool fault stoppage maintenance time through full life-cycle management of a hydraulic system, and ensuring stable operation of tools.

Description

technical field [0001] The invention relates to a quality control technology, in particular to a hydraulic wrench automatic inspection system and method. Background technique [0002] At present, when wind turbines are installed on site, the installation of large parts relies on a large number of high-strength bolts of different specifications to fix and connect them. As a high-strength bolt fastening tool, hydraulic wrench is widely used in installation. In the on-site installation, there are strict technical requirements for the tightening of the hydraulic wrench. The hydraulic wrench is powered by a hydraulic pump, and the output port of the hydraulic pump is generally connected to a pressure gauge, which is convenient for the operator to monitor during the construction process. After installation, the product is judged to be qualified by random inspection. However, due to human reasons, there are over-torque and under-torque phenomena of high-strength bolts in the proc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L25/00
CPCG01L25/00G01L25/003
Inventor 韩良孟永东
Owner YUANJIAN WIND POWER JIANGYINENVISION ENERGY CO LTD
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