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A hexagon head bolt fastening axial force detection device

A fastening axial force and detection device technology, which is used to measure the direction of torque/torsional force when tightening, can solve the problems of not being too small in height, unable to measure the fastening axial force of short bolts, etc., and achieve the effect of simple structure

Inactive Publication Date: 2017-02-22
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to its own characteristics, the ordinary sensor used to detect the fastening axial force cannot make its own height too small, which leads to the inability of the ordinary sensor to measure the fastening axial force of shorter bolts

Method used

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  • A hexagon head bolt fastening axial force detection device
  • A hexagon head bolt fastening axial force detection device
  • A hexagon head bolt fastening axial force detection device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] This embodiment discloses a fastening axial force detection device that can adapt to the measurement of fastening axial force of bolts of different lengths, such as figure 1 and figure 2 As shown, it includes a sleeve 1, a bearing pad 12, a cartridge sensor 7 and a sensor display 8;

[0028] Such as image 3 As shown, the main part of the sleeve 1 is a cylinder with two ends open, one end of the cylinder is coaxially fixed with a flange 2, and the other end is fixed with a sealing plate 4, and the center position of the sealing plate 4 is A round hole is provided, and the inner diameter of the round hole is 1mm larger than the outer diameter of the screw rod of the hexagon head bolt to be tested, so that the screw rod of the bolt can freely penetrate and pass through; the flange plate 2 is a hollow ring, and the flange plate 2 2 The inner diameter is the same as the inner diameter of the cylinder, and the outer diameter of the flange 2 is larger than the outer diamet...

Embodiment 2

[0045] This embodiment discloses a hexagon head bolt fastening axial force detection device, the structure of which is basically the same as that of embodiment 1, the difference is that the inner diameter of the circular hole is 2mm larger than the outer diameter of the screw rod of the hexagon head bolt to be tested, which is convenient for bolts The screw rod is free to pass in and out; the outer wall of the cylinder and the inner wall of the cylindrical sensor are separated by 3 mm; the end of the cylindrical sensor in contact with the bearing block is 3 mm higher than the upper edge of the cylinder.

[0046] The steps of using the device of this embodiment to detect the fastening axial force of the hexagon head bolt are the same as those in Embodiment 1.

[0047] The device for detecting the axial force of fastening hexagon head bolts in this embodiment is also suitable for measuring the axial force of fastening bolts of different lengths.

Embodiment 3

[0049] This embodiment discloses a hexagon head bolt fastening axial force detection device, the structure of which is basically the same as that of embodiment 1, the difference is that the number of anti-rotation pins is 3 and evenly distributed on the side wall of the cylinder.

[0050] The steps of using the device of this embodiment to detect the fastening axial force of the hexagon head bolt are the same as those in Embodiment 1.

[0051] The device for detecting the axial force of fastening hexagon head bolts in this embodiment is also suitable for measuring the axial force of fastening bolts of different lengths.

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PUM

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Abstract

The invention provides a device for detecting axial tightening force of hexagonal head bolts. The device comprises a sleeve, a bearing cushion block, a cylinder sensor and a sensor displayer. A main part of the sleeve is a cylinder, a flange plate is coaxially fixed at one end of the cylinder, a seal plate is fixed at the other end of the cylinder, and a round hole is formed in the center of the seal plate. The cylinder is coaxially sleeved with the cylinder sensor. The bearing cushion block is detachably arranged at the end, close to the seal plate, of the cylinder sensor, a round hole is formed in the center of the bearing cushion block, and the round hole of the bearing cushion block is matched with the round hole of the seal plate. One end of the cylinder sensor makes contact with the flange plate, the other end of the cylinder sensor makes contact with the bearing cushion block, and the end, making contact with the bearing cushion block, of the cylinder sensor is higher than the upper edge of the cylinder. The sensor displayer is electrically connected with the cylinder sensor. The device for detecting the axial tightening force of the hexagonal head bolts is simple and reasonable in structure and suitable for measuring the axial tightening force of the hexagonal head bolts with different lengths.

Description

technical field [0001] The invention relates to detection device technology, in particular to a hexagon head bolt fastening axial force detection device. Background technique [0002] Hex head bolts are the most commonly used fasteners in daily engineering. The magnitude of the fastening axial force is an important indicator of the fastening performance of the hexagon head bolt. The tightening axial force of hexagon head bolts is achieved by applying torque to the bolts. It is very important to establish the relationship between the fastening axial force and the torque. The relationship between the torque and the fastening axial force is called the torque coefficient, and the torque coefficient is generally measured in the laboratory. To determine the torque coefficient, it is necessary to simultaneously measure the torque and the tightening shaft force. The torque can generally be measured by a torsion testing machine or a torque wrench; the tightening axial force is gen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L5/24
Inventor 邢怀念金立强张小鹏刘增利李达孙凯
Owner DALIAN UNIV OF TECH