CN114323433A - Supersound bolt stress appearance calibrating device - Google Patents
Supersound bolt stress appearance calibrating device Download PDFInfo
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- CN114323433A CN114323433A CN202210044477.4A CN202210044477A CN114323433A CN 114323433 A CN114323433 A CN 114323433A CN 202210044477 A CN202210044477 A CN 202210044477A CN 114323433 A CN114323433 A CN 114323433A
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- 230000007246 mechanism Effects 0.000 claims abstract description 26
- 230000008859 change Effects 0.000 claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims description 35
- 238000006073 displacement reaction Methods 0.000 claims description 18
- 230000000903 blocking effect Effects 0.000 claims description 2
- 230000009021 linear effect Effects 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000009471 action Effects 0.000 description 6
- 238000001514 detection method Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The invention relates to an ultrasonic bolt stress gauge calibration device which comprises a bolt and a device support, wherein the device support is provided with a bolt tension support, the bolt comprises a bolt head and a threaded screw rod, a nut is screwed on the screw rod, the bolt tension support is provided with a tension support screw rod through hole for the screw rod to pass through along the left-right direction, the nut and the bolt head are respectively positioned at the left side and the right side of the bolt tension support, the device support is provided with a pulling mechanism for applying right-direction pulling force to the bolt head on the right side of the bolt tension support, the device support is assembled with a stress gauge mounting support in a guiding and moving manner along the left-right direction on the left side of the bolt tension support, the stress gauge mounting support is provided with a stress gauge mounting structure for mounting an ultrasonic measuring head, and the device support is further provided with a length measuring mechanism for detecting the length change of the bolt after being tensioned. The invention provides an ultrasonic bolt stress gauge calibrating device capable of calibrating an ultrasonic bolt stress gauge.
Description
Technical Field
The invention relates to an ultrasonic bolt stress meter calibrating device in the field of calibration and verification.
Background
The bolt is a connecting piece comparatively commonly used, and during the use, the bolt will be locked by the centre gripping thing with the nut cooperation, and before the nut is screwed up, after the nut is screwed up, the bolt can produce certain axial deformation, and this axial deflection is less, generally about 0.1mm to lead to the stress of bolt to change, this stress is the important index of judging bolt, nut degree of screwing up.
The ultrasonic bolt stress gauge is equipment for detecting the self stress of a screwed bolt and comprises an ultrasonic measuring head, wherein the ultrasonic measuring head is used for transmitting and receiving reflected ultrasonic waves. When the bolt stress measuring device is used, the ultrasonic measuring head and the bolt are arranged coaxially, the ultrasonic measuring head is aligned to the end portion of the tested bolt, ultrasonic waves are generated by the ultrasonic measuring head towards the bolt, the ultrasonic waves penetrate through one end face of the bolt and are reflected back to be received by the ultrasonic measuring head after reaching the other end face, and the tensile deformation length of the bolt is calculated according to the transmitting and receiving time difference of the ultrasonic waves, so that the stress of the bolt is obtained.
According to the corresponding use requirements, the ultrasonic bolt stress gauge needs to be calibrated regularly, and then a calibration device suitable for calibrating the ultrasonic bolt stress gauge is lacked in the prior art.
Disclosure of Invention
The invention aims to provide an ultrasonic bolt stress gauge calibration device capable of calibrating an ultrasonic bolt stress gauge.
In order to solve the technical problems, the technical scheme of the ultrasonic bolt stress gauge calibration device is as follows:
the ultrasonic bolt stress gauge calibration device comprises a bolt and a device support, wherein the device support is provided with a bolt tension support, the bolt comprises a bolt head and a threaded screw rod, a nut is screwed on the screw rod, the bolt tension support is provided with a tension support screw rod through hole for the screw rod to pass through in the left-right direction, the nut and the bolt head are respectively positioned on the left side and the right side of the bolt tension support, the device support is provided with a pulling mechanism for applying right-direction pulling force to the bolt head on the right side of the bolt tension support, the device support is provided with a stress gauge mounting support in a guiding and moving mode in the left-right direction on the left side of the bolt tension support, the stress gauge mounting support is provided with a stress gauge mounting structure for mounting an ultrasonic bolt stress gauge to be tested, and the device support is further provided with a length measuring mechanism for detecting length change of the bolt after tension.
The invention has the beneficial effects that: when the ultrasonic bolt stress gauge is calibrated, the ultrasonic bolt stress gauge to be tested is installed on the stress gauge installation structure, the stress installation support is moved, an ultrasonic measuring head of the ultrasonic bolt stress gauge to be tested abuts against the left end of the screw rod, the tensioning mechanism exerts tension on the bolt head towards the right, the bolt is stretched under the action of the tension, the stretching state of the bolt in the nut locking state is simulated, the ultrasonic bolt stress gauge measures the stretching length change of the bolt, and the length measuring mechanism measures the stretching displacement change of the bolt and compares the measuring results of the ultrasonic bolt stress gauge so as to calibrate the ultrasonic bolt stress gauge.
Further, the stress gauge mounting structure is a threaded hole matched with the peripheral thread of the tested ultrasonic bolt stress gauge.
Furthermore, the pulling mechanism is provided with an action output end capable of outputting linear actions in the left-right direction, the action output end is connected with a pulling head matched with the bolt head, the pulling head is of a sleeve-shaped structure extending along the front-back direction in the axial direction, a pulling head bolt through hole for the screw to pass through is formed in the left side wall of the pulling head, and the right side hole opening of the pulling head bolt through hole is in blocking fit with the left end face of the bolt head.
Further, the puller bolt through hole penetrates through the front and rear end faces of the puller in the front and rear directions.
Furthermore, the pulling head is provided with a square sleeve-shaped structure of a left side wall, a right side wall, an upper side wall and a lower side wall, and the pulling head bolt is perforated on the left side wall.
Furthermore, a measuring support is fixed on a device support and located on the front side of the zipper head, a length measuring mechanism comprises a measuring lever which is hinged and connected with the measuring support through a hinge structure, a hinge axis of the hinge structure extends in the vertical direction, the measuring lever comprises a first measuring section located on the rear side of the hinge structure and a second measuring section located on the front side of the hinge structure, the rear end of the first measuring section extends into the inner side of the zipper head and is provided with a transmission part which is used for abutting against the right end face of the zipper head, the second measuring section is provided with a measuring part, the length measuring mechanism further comprises a laser displacement sensor, the axis of the laser displacement sensor extends in the left-right direction and faces the measuring part, and the distance of the measuring part from the hinge structure axis is greater than the distance of the transmission part from the hinge structure axis.
Further, the distance between the measuring part and the axis of the hinge structure is 3-8 times that between the transmission part and the axis of the hinge structure.
Further, a lever spring for forcing the transmission part of the first measuring section to be in contact with the bolt head is arranged between the measuring bracket and the measuring lever.
Furthermore, the measuring part comprises an upper side arm and a lower side arm which are arranged at an interval from top to bottom, an avoiding space is formed between the upper side arm and the lower side arm of the measuring part, and the projection of the screw rod in the left-right direction is positioned between the upper side arm and the lower side arm of the measuring part.
Because the length change of the stretched bolt is small, if a displacement sensor with high enough precision is directly adopted to measure the stretched length of the bolt, the equipment cost is inevitably increased, and the size of the inner cavity of the puller is not easy to be too large in order to not excessively increase the structural size of the equipment in the left and right directions.
Drawings
The above and other objects, features and advantages of exemplary embodiments of the present disclosure will become readily apparent from the following detailed description read in conjunction with the accompanying drawings. Several embodiments of the present disclosure are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings and in which like reference numerals refer to like or corresponding parts and in which:
FIG. 1 is a schematic block diagram of one embodiment of the present invention;
FIG. 2 is a schematic view of the detection lever of FIG. 1 engaged with the bolt head;
FIG. 3 is a schematic diagram of the detection of the present invention in a top view;
description of reference numerals: 1. dovetail-type guide rails; 2. a stress gauge mounting bracket; 3. an ultrasonic probe; 4. a sensor holder; 5. a laser displacement sensor; 6. a nut; 7. a bolt tension bracket; 8. a screw; 9. a transmission section; 10. perforating a pull head bolt; 11. a left side wall; 12. applying a puller; 13. a right side wall; 14. a stretching cylinder; 15. a mechanism mounting frame; 16. a bracket base; 17. a bolt head; 18. a measuring support; 19. a detection lever; 20. a first measurement segment; 21. a second measurement segment; 22. the upper side arm of the transmission part; 23. a lower side arm of the transmission part; 24. avoiding a space; 25. a hinge structure; 26. a lever spring; 27. a measuring section.
Detailed Description
In order to facilitate an understanding of the invention, the invention is described in more detail below with reference to the accompanying drawings and specific examples. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It is to be noted that, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The embodiment of the ultrasonic bolt stress gauge calibrating device is shown in figures 1-3:
the bolt comprises a bolt and a device support, the bolt is a common bolt, the bolt comprises a bolt head 17 and a threaded screw rod 8, and a nut 6 is screwed on the screw rod.
The device support includes support base 16, support base 16's left end is provided with direction along the dovetail guide rail 1 that the left and right directions extends, and guiding movement is equipped with stress appearance installing support 2 on the dovetail guide rail 1, is provided with the stress appearance mounting structure who is used for examining the installation of supersound bolt stress appearance on the stress appearance installing support, and in this embodiment, stress appearance mounting structure is the screw hole with the periphery screw thread adaptation of ultrasonic wave gauge head, during the use, only need examine ultrasonic wave gauge head 3 of supersound bolt stress appearance adorn in the screw hole soon can.
A bolt tension bracket 7 is fixed on the right side of the stress meter mounting bracket on the bracket base, a tension bracket screw through hole for a screw 8 to pass through along the left-right direction is formed in the bolt tension bracket 7, and a nut 6 and a bolt head 17 are respectively positioned on the left side and the right side of the bolt tension bracket 7.
The device bracket is provided with a pulling mechanism on the right side of the bolt pulling bracket for applying a pulling force towards the right direction to the bolt head, the pulling mechanism in the embodiment comprises a pulling cylinder 14 which is arranged on a mechanism mounting frame 15 and extends along the left-right direction, and the mechanism mounting frame 15 is fixed on a bracket base 16. The pulling cylinder comprises a cylinder body fixed with the mechanism mounting frame and a piston rod matched with the cylinder body in a guiding and moving mode, and the piston rod forms an action output end of the pulling mechanism.
The action output end is fixedly connected with a pulling head 12 matched with the bolt head, the pulling head 12 is of a sleeve-shaped structure extending along the front-back direction in the axial direction, a pulling head bolt through hole 10 for a screw rod to penetrate through is formed in the left side wall 11 of the pulling head, and the right side hole opening of the pulling head bolt through hole 10 is in stop matching with the left end face of the bolt head 17. The puller bolt insertion hole 10 penetrates the front and rear end faces of the puller 12 in the front-rear direction.
In this embodiment, the pulling head has a square sleeve-shaped structure with a left side wall 11, a right side wall 13, an upper side wall and a lower side wall, and the pulling head bolt is perforated on the left side wall.
The device bracket is also provided with a length measuring mechanism for detecting the length change of the pulled bolt, the device bracket is fixed with a measuring bracket 18, the measuring bracket 18 is positioned at the front side of the pulling head, the length measuring mechanism comprises a measuring lever 19 which is hinged and connected with the measuring bracket through a hinge structure, the hinge axis of the hinge structure extends along the up-down direction, the measuring lever comprises a first measuring section 20 positioned at the rear side of the hinge structure and a second measuring section 21 positioned at the front side of the hinge structure, the rear end of the first measuring section 20 extends into the inner side of the pulling head and is provided with a transmission part 9 which is matched with the right end surface of the bolt head in a propping manner, the second measuring section is provided with a measuring part 27 which is formed by partial left end surface of the second measuring section, the length measuring mechanism also comprises a laser displacement sensor 5 which extends along the left-right direction and is arranged towards the measuring part, the length of the measuring part from the axis of the hinge structure is greater than the length of the transmission part from the axis of the hinge structure, in this embodiment, the length of measuring part apart from the hinge structure axis is six times of the length of transmission part apart from the hinge structure axis, and laser displacement sensor can detect the displacement change of measuring part. The laser displacement sensor is arranged on the sensor support 4, and the sensor support 4 is fixed on the support base.
The length of the measuring part 27 from the axis of the hinge structure 25 is 6 times the length of the transmission part from the axis of the hinge structure. A lever spring 26 for forcing the measuring part of the first measuring section to contact with the bolt head is arranged between the measuring bracket 18 and the measuring lever 19, and under the action of the lever spring, the transmission part 9 can be ensured to contact with the right end of the bolt head 17 all the time.
The transmission part comprises a transmission part upper side arm 22 and a transmission part lower side arm 23 which are arranged at intervals up and down, an avoidance space 24 is formed between the transmission part upper side arm and the transmission part lower side arm, and the projection of the screw 8 in the left-right direction is positioned between the transmission part upper side arm and the transmission part lower side arm. The transmission part can not influence the influence of the ultrasonic measuring head on bolt length measurement, ultrasonic waves sent by the ultrasonic measuring head enter through the left end face of the screw and reach the right end face of the bolt to be reflected back, and if the transmission part is located in the middle position of the right end of the bolt, the ultrasonic waves can possibly enter the detection lever to influence the measurement of the ultrasonic measuring head on the length change of the bolt.
In use, as shown in fig. 3: an ultrasonic measuring head 3 of an ultrasonic bolt stress gauge to be detected is arranged on a stress gauge mounting bracket 2, the ultrasonic measuring head 3 and a bolt are arranged coaxially, the stress gauge mounting bracket 2 is moved towards the right, the right end of the ultrasonic measuring head 3 abuts against the left end of a screw 8 of the bolt, the ultrasonic measuring head can measure the length of the bolt before the bolt is stretched once, a laser displacement sensor records the displacement initial point of a measuring part at the moment as a zero point, a stretching cylinder of a stretching mechanism stretches a bolt head of the bolt towards the right, the bolt is stretched and deformed, the bolt head abuts against a transmission part, the transmission part acts, a lever swings, the laser displacement sensor detects the displacement change of the measuring part, the stretched length of the bolt is converted according to a lever ratio, so that the ultrasonic measuring head is calibrated, the measuring part acts for 0.1mm every time, the measuring part acts for 0.6mm, the displacement is easy to measure, and the requirement on the precision of the laser displacement sensor is reduced, meanwhile, the laser displacement sensor is convenient to arrange. The bolt through hole of the tension applying head penetrates through the tension applying head along the front and back direction, so that the bolt can be conveniently disassembled and assembled.
In other embodiments of the invention: the pulling mechanism can also be an electric push rod; the pulling head can also be of a C-shaped structure; the through hole of the anchor bolt can be a circular hole; the length of the measuring part from the axis of the hinge structure is 3 times, 8 times or other times within or outside 3-8 times of the length of the transmission part from the axis of the hinge structure.
In the above description of the present specification, the terms "fixed," "mounted," "connected," or "connected," and the like, are to be construed broadly unless otherwise expressly specified or limited. For example, with the term "coupled", it can be fixedly coupled, detachably coupled, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship. Therefore, unless the specification explicitly defines otherwise, those skilled in the art can understand the specific meaning of the above terms in the present invention according to specific situations.
From the above description of the present specification, those skilled in the art will also understand the terms used below, terms indicating orientation or positional relationship such as "upper", "lower", "front", "rear", "left", "right", "length", "width", "thickness", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", "central", "longitudinal", "transverse", "clockwise" or "counterclockwise" and the like are based on the orientation or positional relationship shown in the drawings of the present specification, it is for the purpose of facilitating the explanation of the invention and simplifying the description, and it is not intended to state or imply that the devices or elements involved must be in the particular orientation described, constructed and operated, therefore, the above terms of orientation or positional relationship should not be construed or interpreted as limiting the present invention.
In addition, the terms "first" or "second", etc. used in this specification are used to refer to numbers or ordinal terms for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present specification, "a plurality" means at least two, for example, two, three or more, and the like, unless specifically defined otherwise.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. The utility model provides an supersound bolt stressometer calibrating device which characterized in that: the device comprises a bolt and a device support, wherein the device support is provided with a bolt tension support, the bolt comprises a bolt head and a threaded screw rod, a nut is screwed on the screw rod, a tension support screw rod through hole for the screw rod to pass through in the left-right direction is formed in the bolt tension support, the nut and the bolt head are respectively positioned on the left side and the right side of the bolt tension support, a tensioning mechanism for applying right-direction tension to the bolt head is arranged on the right side of the bolt tension support on the device support, a stress instrument mounting support is assembled on the left side of the bolt tension support in a guiding and moving mode in the left-right direction on the device support, a stress instrument mounting structure for mounting an ultrasonic measuring head of an ultrasonic bolt stress instrument to be detected is arranged on the stress instrument mounting support, and a length measuring mechanism for detecting length change of the bolt after tension is further arranged on the device support.
2. The ultrasonic bolt stress gauge calibration device of claim 1, wherein: the stress gauge mounting structure is a threaded hole matched with the peripheral threads of the ultrasonic measuring head.
3. The ultrasonic bolt stress gauge calibration device according to claim 1 or 2, wherein: the pulling mechanism is provided with a motion output end capable of outputting linear motion in the left-right direction, the motion output end is connected with a pulling head matched with the bolt head, the pulling head is of a sleeve-shaped structure extending along the front-back direction in the axial direction, a pulling head bolt through hole for the screw rod to penetrate through is formed in the left side wall of the pulling head, and the right side hole opening of the pulling head bolt through hole is matched with the left end face of the bolt head in a blocking mode.
4. The ultrasonic bolt stress gauge calibration device of claim 3, wherein: the puller bolt through hole penetrates through the front end face and the rear end face of the puller along the front-rear direction.
5. The ultrasonic bolt stress gauge calibration device of claim 3, wherein: the puller is provided with a square sleeve-shaped structure of a left side wall, a right side wall, an upper side wall and a lower side wall, and a puller bolt through hole is arranged on the left side wall.
6. The ultrasonic bolt stress gauge calibration device of claim 3, wherein: the device is characterized in that a measuring support is fixed on a support, the measuring support is located on the front side of the puller, a length measuring mechanism comprises a measuring lever which is hinged and connected with the measuring support through a hinge structure, a hinge axis of the hinge structure extends in the up-down direction, the measuring lever comprises a first measuring section located on the rear side of the hinge structure and a second measuring section located on the front side of the hinge structure, the rear end of the first measuring section extends into the inner side of the puller and is provided with a transmission part which is used for abutting against the right end face of a bolt head in a matched manner, the second measuring section is provided with a measuring part, the length measuring mechanism further comprises a laser displacement sensor, the laser displacement sensor extends towards the left and right direction, the distance of the measuring part is larger than the distance of the transmission part, and the length of the hinge structure axis is larger than the distance of the length of the hinge structure axis.
7. The ultrasonic bolt stress gauge calibration device of claim 6, wherein: the measuring part is away from the length of the axis of the hinge structure is the distance of the transmission part, and the distance is 3-8 times of the length of the axis of the hinge structure.
8. The ultrasonic bolt stress gauge calibration device of claim 6, wherein: and a lever spring for forcing the transmission part of the first measuring section to be in contact with the bolt head is arranged between the measuring bracket and the measuring lever.
9. The ultrasonic stress gauge calibration device of claim 6, wherein: the transmission part comprises a transmission part upper side arm and a transmission part lower side arm which are arranged at an upper-lower interval, an avoidance space is formed between the transmission part upper side arm and the transmission part lower side arm, and the projection of the screw rod in the left-right direction is positioned between the transmission part upper side arm and the transmission part lower side arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210044477.4A CN114323433A (en) | 2022-01-14 | 2022-01-14 | Supersound bolt stress appearance calibrating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210044477.4A CN114323433A (en) | 2022-01-14 | 2022-01-14 | Supersound bolt stress appearance calibrating device |
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| Publication Number | Publication Date |
|---|---|
| CN114323433A true CN114323433A (en) | 2022-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210044477.4A Pending CN114323433A (en) | 2022-01-14 | 2022-01-14 | Supersound bolt stress appearance calibrating device |
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4292835A (en) * | 1980-02-25 | 1981-10-06 | Raymond Engineering, Inc. | Calibration apparatus and method for strain measuring instruments |
| JPH07253368A (en) * | 1994-01-31 | 1995-10-03 | Yoshihisa Mizuguchi | Apparatus and method for measuring bolt axial force |
| CN204566055U (en) * | 2015-05-07 | 2015-08-19 | 云峰发电厂 | Bolt tractor |
| CN104897477A (en) * | 2015-06-19 | 2015-09-09 | 河北工程大学 | Bitumen-like material creep test device |
| CN207050897U (en) * | 2017-05-17 | 2018-02-27 | 宁波珈多利机械有限公司 | A kind of bolt tension force test fixture |
| CN209459624U (en) * | 2018-12-22 | 2019-10-01 | 中国计量科学研究院 | A kind of portable strain gauge calibrating installation |
| CN209542084U (en) * | 2019-03-30 | 2019-10-25 | 济南纳克试验设备有限公司 | A kind of comprehensive tensile test fixture of high-strength bolt |
| CN110418949A (en) * | 2018-02-28 | 2019-11-05 | 株式会社东日制作所 | Pulling device |
| CN209689572U (en) * | 2019-03-22 | 2019-11-26 | 中国船舶重工集团公司第七0七研究所 | A kind of sensor applied to the micro- distortion measurement of zero-initial-length spring |
| CN211651933U (en) * | 2019-12-19 | 2020-10-09 | 上海斌瑞检测技术服务有限公司 | Convenient operation's supersound stress gauge calibrating device |
| CN211697235U (en) * | 2019-12-11 | 2020-10-16 | 北京首航科学技术开发有限公司 | Tensile test clamp for left-handed threaded bolt |
| CN112129450A (en) * | 2020-08-27 | 2020-12-25 | 河南航天精工制造有限公司 | Threaded fastener pretightening force measuring device |
| CN213210004U (en) * | 2020-07-13 | 2021-05-14 | 中车株洲电机有限公司 | Calibrating device of ultrasonic wave bolt measuring apparatu |
-
2022
- 2022-01-14 CN CN202210044477.4A patent/CN114323433A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4292835A (en) * | 1980-02-25 | 1981-10-06 | Raymond Engineering, Inc. | Calibration apparatus and method for strain measuring instruments |
| JPH07253368A (en) * | 1994-01-31 | 1995-10-03 | Yoshihisa Mizuguchi | Apparatus and method for measuring bolt axial force |
| CN204566055U (en) * | 2015-05-07 | 2015-08-19 | 云峰发电厂 | Bolt tractor |
| CN104897477A (en) * | 2015-06-19 | 2015-09-09 | 河北工程大学 | Bitumen-like material creep test device |
| CN207050897U (en) * | 2017-05-17 | 2018-02-27 | 宁波珈多利机械有限公司 | A kind of bolt tension force test fixture |
| CN110418949A (en) * | 2018-02-28 | 2019-11-05 | 株式会社东日制作所 | Pulling device |
| CN209459624U (en) * | 2018-12-22 | 2019-10-01 | 中国计量科学研究院 | A kind of portable strain gauge calibrating installation |
| CN209689572U (en) * | 2019-03-22 | 2019-11-26 | 中国船舶重工集团公司第七0七研究所 | A kind of sensor applied to the micro- distortion measurement of zero-initial-length spring |
| CN209542084U (en) * | 2019-03-30 | 2019-10-25 | 济南纳克试验设备有限公司 | A kind of comprehensive tensile test fixture of high-strength bolt |
| CN211697235U (en) * | 2019-12-11 | 2020-10-16 | 北京首航科学技术开发有限公司 | Tensile test clamp for left-handed threaded bolt |
| CN211651933U (en) * | 2019-12-19 | 2020-10-09 | 上海斌瑞检测技术服务有限公司 | Convenient operation's supersound stress gauge calibrating device |
| CN213210004U (en) * | 2020-07-13 | 2021-05-14 | 中车株洲电机有限公司 | Calibrating device of ultrasonic wave bolt measuring apparatu |
| CN112129450A (en) * | 2020-08-27 | 2020-12-25 | 河南航天精工制造有限公司 | Threaded fastener pretightening force measuring device |
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