Calibrator for hydraulic bolt tensioning jack

A hydraulic bolt and tensioner technology, which is applied in metal processing, metal processing equipment, manufacturing tools, etc., can solve the problem of not having a hydraulic bolt tensioner calibrator, etc., to achieve the calibration of large-load bolt tensioners and ensure accuracy sex, damage protection effect

Pending Publication Date: 2019-04-05
BEIJING AEROSPACE YISEN WIND TUNNEL ENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are no relevant testing standards and hydraulic bolt tensioner calibrator in China

Method used

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  • Calibrator for hydraulic bolt tensioning jack
  • Calibrator for hydraulic bolt tensioning jack
  • Calibrator for hydraulic bolt tensioning jack

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] The principle and features of the device will be described below in conjunction with the accompanying drawings.

[0021] Hydraulic bolt tensioner calibrator such as figure 1 As shown, the calibrator includes a carrying device 1 , an ultra-high pressure oil source 2 , a computer and operating software 3 and a safety protection device 13 .

[0022] Carrying device 1 such as figure 2 As shown, the hydraulic bolt tensioner 4 is connected and installed to bear the large load tension force generated by the hydraulic bolt tensioner 4, and the tension force of the hydraulic bolt tensioner 4 is collected. The bearing device 1 is a closed internal force circulation structure, which can meet the test of the large-load hydraulic bolt tensioner 4 . The carrying device 1 includes a top cover 5 , a support 6 , a base 7 , a working force sensor 8 , a test bolt mounting support 9 , a test bolt 10 and the like. The hydraulic bolt tensioner 4 is installed above the top cover 5 of the ...

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PUM

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Abstract

The invention discloses a calibrator for a hydraulic bolt tensioning jack. The calibrator comprises a testing tool, a protection unit, an ultrahigh-pressure oil source and a control unit; the testingtool comprises a top cover, a supporting part, a base, a working force sensor, a testing bolt mounting support and a testing bolt, wherein the top cover, the supporting part and the base form a closedshell, the working force sensor is fixed on the base, the testing bolt mounting support is fixed to the top end of the working force sensor, a threaded hole is arranged in the testing bolt mounting support, the central axis of the threaded hole is coaxial with the central axis of the working force sensor, and the testing bolt is a double-head bolt with threads at the two ends, one end of the testing bolt penetrates through the top cover to be screwed into the threaded hole of the testing bolt installation support, and the other end of the testing bolt is in threaded connection with a piston of the hydraulic bolt tensioning jack, the cylinder body of the hydraulic cylinder of the hydraulic bolt tensioning jack is seated on the upper surface of the top cover, and the protection unit is fixed on the top cover. According to the instrument, various specifications calibration and even large-load bolt tensioning jack calibration can be realized.

Description

technical field [0001] The invention relates to a calibrator for a hydraulic bolt tensioner, which is suitable for the detection of a large-load hydraulic bolt tensioner. Background technique [0002] The bolt tensioner is used for bolt tensioning and is widely used in the installation of mechanical structures. It can accurately set the pre-tightening force of bolt tensioning, not only to ensure that the bolts are tightened, but also tightened accurately. During work, the bolt tensioner is driven by an ultra-high pressure oil source, and the relationship between the pre-tightening force of the bolt tensioner and the oil pressure of the ultra-high pressure oil source is established, and the bolt tensioner can be obtained through the oil pressure of the ultra-high pressure oil source. preload. During the use of the bolt tensioner, the internal piston is subjected to large-load tension and the impact of ultra-high oil source, and the internal sealing ring is easily damaged, re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P19/06B23P19/10
CPCB23P19/06B23P19/105
Inventor 陈良泽朱世义张旸
Owner BEIJING AEROSPACE YISEN WIND TUNNEL ENG TECH
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