CN210464791U - Calibration device for bolt pretightening force detection sensor - Google Patents
Calibration device for bolt pretightening force detection sensor Download PDFInfo
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- CN210464791U CN210464791U CN201921943321.XU CN201921943321U CN210464791U CN 210464791 U CN210464791 U CN 210464791U CN 201921943321 U CN201921943321 U CN 201921943321U CN 210464791 U CN210464791 U CN 210464791U
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Abstract
The utility model discloses a bolt pretightning force detects sensor calibration device, include: the device comprises a bolt pretightening force detection system (1), a force signal acquisition device (2), a bolt (3), a pretightening force detection sensor (4), a bearing plate (5), a standard force sensor (6), a force transmission shaft (7) and a base (8); the bolt pretightening force detection system (1) is electrically connected with the pretightening force detection sensor (4), the pretightening force detection sensor (4) is connected with the bolt (3), and the standard force sensor (6) is electrically connected with the force signal acquisition device (2); a through hole is formed in the bearing plate (5), the bolt (3) penetrates through the through hole to be in threaded connection with the force transmission shaft (7), the force transmission shaft (7) is connected with a bearing part measured by the standard force sensor (6), and the standard force sensor (6), the bearing plate (5) and the base (8) are fixed in position; the device and the method can realize the on-site calibration of the bolt pretightening force detection sensor quickly and conveniently at low cost.
Description
Technical Field
The utility model relates to a sensor field of maring specifically relates to a bolt pretightning force detects sensor calibration device.
Background
The bolt connection is a simple, low-cost and most widely used connection mode and is widely applied to various industries such as bridges, petrochemical engineering and the like. Monitoring the bolt pretightening force regularly or in real time is an important means for ensuring the connection reliability of the bolt and preventing production accidents such as connection failure and the like. A ring-type pressure sensor or an ultrasonic sensor is usually adopted as a bolt pretightening force detection sensor, and the calibration of the detection sensor is an important link for determining the pretightening force detection precision. In the existing method, a tension and compression testing machine and other equipment are generally adopted to load force on a bolt or a pretightening force detection sensor thereof, a standard loading force value is obtained through a standard force sensor on the tension and compression testing machine, an output signal of the pretightening force detection sensor is obtained through a measuring instrument, a mapping relation between the standard loading force value and the output signal is established, and calibration of the pretightening force detection sensor is completed. The calibration process needs large equipment such as a tension and compression testing machine, is complex in operation process and high in calibration cost, is only suitable for completing the calibration process in a laboratory, and cannot meet the requirement of rapid calibration on a detection site.
Patent application No. 201811163641.3 discloses a force sensor calibration device, but is only suitable for calibration of a tension sensor, and is difficult to be used for calibration of a bolt pretightening force detection sensor.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a calibration device of bolt pretightning force detection sensor to a low cost, the bolt pretightning force detection sensor is on-the-spot demarcation is realized to swift convenient form.
In order to realize the above-mentioned utility model purpose, the utility model provides a bolt pretightning force detects sensor calibration device, the device includes:
the device comprises a bolt pretightening force detection system, a force signal acquisition device, a bolt, a pretightening force detection sensor, a bearing plate, a standard force sensor, a force transmission shaft and a base;
the bolt pretightening force detection system is electrically connected with the pretightening force detection sensor, the pretightening force detection sensor is connected with the bolt, and the pretightening force detection sensor is used for measuring a characteristic value signal representing the pretightening force state of the bolt in real time and transmitting the characteristic value signal obtained by measurement to the bolt pretightening force detection system for processing and recording; the standard force sensor is electrically connected with the force signal acquisition device; the bearing plate is provided with a through hole, a bolt penetrates through the through hole to be in threaded connection with the force transmission shaft, the force transmission shaft is connected with the force bearing part measured by the standard force sensor, and the standard force sensor, the bearing plate and the base are fixed in position.
Preferably, the bearing plate is fixedly arranged on the base; the standard force sensor is fixed on the bearing plate or the base through screws.
Preferably, the lower end of the bolt penetrates through a through hole in the middle of the bearing plate and then is in threaded connection with the force transmission shaft; the axes of the bolt, the bolt mounting hole on the bearing plate, the force transmission shaft and the standard force sensor are coincident.
Preferably, the pretightening force detection sensor is a force ring sensor or an ultrasonic sensor, when the pretightening force detection sensor is the force ring sensor, the pretightening force detection sensor is sleeved on the outer surface of the thread of the bolt, and the pretightening force detection sensor is arranged between the bolt and the bearing plate; when the pretightening force detection sensor is an ultrasonic sensor, the pretightening force detection sensor is installed above the head of the bolt.
Preferably, the bolt pretightening force detection adopts an annular force sensor, and the standard force sensor adopts a pressure type force sensor.
Preferably, the bolt pretightening force detection adopts an annular force sensor, and the standard force sensor adopts a pull type force sensor.
Preferably, the bolt pretightening force detection adopts an ultrasonic sensor, and the standard force sensor adopts a pressure type force sensor.
Preferably, the bolt pretightening force detection adopts an ultrasonic sensor, and the standard force sensor adopts a pull type force sensor.
Preferably, the force transmission shaft and the bearing plate are circumferentially fixed to prevent the force transmission shaft from rotating, and the axial gap is reserved, so that no axial acting force exists, and the pretightening force applied to the bolt is really transmitted to the force transmission shaft.
The utility model provides a one or more technical scheme has following technological effect or advantage at least:
the utility model provides a device can low cost, swift convenient realization bolt pretightning force detect the sensor scene and mark.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention;
fig. 1 is a schematic structural diagram of a calibration device for a bolt pretightening force detection sensor in the utility model;
FIG. 2 is a schematic structural diagram of the device when the bolt pre-tightening force detection adopts an annular force sensor and the standard force sensor adopts a pressure type force sensor;
FIG. 3 is a schematic structural diagram of the device when the bolt pre-tightening force detection adopts an annular force sensor and the standard force sensor adopts a pull force sensor;
FIG. 4 is a schematic structural diagram of the device when the bolt pre-tightening force detection adopts an ultrasonic sensor and the standard force sensor adopts a pressure type force sensor;
FIG. 5 is a schematic structural diagram of the device when the bolt pre-tightening force detection adopts an ultrasonic sensor and the standard force sensor adopts a pull type force sensor;
the device comprises a bolt pre-tightening force detection system 1, a force signal acquisition device 2, a bolt 3, a pre-tightening force detection sensor 4, a force bearing plate 5, a standard force sensor 6, a force transmission shaft 7 and a base 8.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflicting with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and the scope of the present invention is not limited by the specific embodiments disclosed below.
It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in a generic and descriptive sense only and not for purposes of limitation, as the terms are used in the description to indicate that the referenced device or element must have the specified orientation, be constructed and operated in the specified orientation, and not for the purposes of limitation.
It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.
Please refer to fig. 1, an embodiment of the present invention provides a quick calibration device for a bolt pretightening force detection sensor, which includes a bolt 3, a pretightening force detection sensor 4, a bearing plate 5, a standard force sensor 6, a force transmission shaft 7, a base 8, a bolt pretightening force detection system 1, and a force signal acquisition device 2. The bolt pretightening force detection system 1 is electrically connected with the pretightening force detection sensor 4, the pretightening force detection sensor 4 is connected with the bolt 3, a characteristic value signal representing the pretightening force state of the bolt 3 is obtained through real-time measurement, and the characteristic value signal is collected and recorded by the bolt pretightening force detection system 1; the standard force sensor 6 is electrically connected with the force signal acquisition device 2; the bearing plate is provided with a through hole, the bolt 3 penetrates through the through hole to be in threaded connection with the force transmission shaft 7, the force transmission shaft 7 is connected with the force bearing part measured by the standard force sensor 6, and the standard force sensor 6, the bearing plate 5 and the base 8 are fixed in position. Through fastening the bolt 3 many times, the characteristic value signal that bolt pretightning force detecting system 1 acquireed is recorded simultaneously to reach the standard force value that the force signal collection system 2 acquireed, obtain the mapping relation between characteristic value signal and the standard force value, and then accomplish the demarcation of pretightning force detection sensor 4.
Wherein, in the process of concrete implementation, when the bolt pretightening force detection sensor is a force sensor, the model of the bolt pretightening force detection system 1 can be as follows: omega dp41 digital display meter; when the bolt pretightening force detection sensor is a piezoelectric ultrasonic sensor, the model of the bolt pretightening force detection system 1 can be as follows: an ifast expert bolt pretightening force ultrasonic detection system; wherein, in the specific implementation process, the model of the force signal acquisition device 2 may be: omega dp41 digital display meter.
Wherein, in the embodiment of the utility model, the pretightening force detection sensor 4 comprises a force ring sensor and an ultrasonic sensor, if the pretightening force detection sensor 4 is a force ring sensor, the pretightening force detection sensor passes through the thread part of the bolt 3 and is installed between the bolt 3 and the bearing plate 5; if the pretightening force detection sensor 4 is an ultrasonic sensor, the pretightening force detection sensor is installed above the head of the bolt 3. The pretightening force generated by the fastening bolt 3 is transmitted to the standard sensor 6 through the force transmission shaft 7 to measure the force bearing part. The axes of the bolt 3, the bolt mounting hole on the bearing plate 5, the force transmission shaft 7 and the standard sensor 6 are coincident. The force transmission shaft 7 and the force bearing plate 5 are circumferentially fixed and have a gap in the axial direction; in order to guarantee that in the fastening process of the bolt 3, the force transmission shaft 7 does not rotate and does not contact with the bearing plate 5 by axial force, and the pretightening force of the bolt 3 is really transmitted to the standard sensor 6.
Wherein, in the embodiment of the utility model, the bearing plate 5 is fixedly arranged on the base 8; the standard force sensor 6 is fixed on the bearing plate 5 through a screw.
In the embodiment of the present invention, please refer to fig. 2, the bolt pretightening force detection employs an annular force sensor, and the standard force sensor employs a pressure type force sensor.
In the embodiment of the present invention, please refer to fig. 3, the bolt pretightening force detection employs an annular force sensor, and the standard force sensor employs a pull-type force sensor.
In the embodiment of the present invention, please refer to fig. 4, the bolt pretightening force detection employs an ultrasonic sensor, and the standard force sensor employs a pressure type force sensor.
In the embodiment of the present invention, please refer to fig. 5, the bolt pretightening force detection employs an ultrasonic sensor, and the standard force sensor employs a pull-type force sensor.
The embodiment of the utility model provides a pretightning force detection sensor calibration method based on a bolt pretightning force detection sensor calibration device, the method includes:
fastening the bolt 3 for multiple times, and recording a characteristic value signal obtained by the bolt pretightening force detection system 1 and a standard force value obtained by the force signal acquisition device 2;
and acquiring a mapping relation between the characteristic value signal and the standard force value, and completing the calibration of the pretightening force detection sensor 4.
While the preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (5)
1. The calibration device for the bolt pretightening force detection sensor is characterized by comprising the following components:
the device comprises a bolt pretightening force detection system (1), a force signal acquisition device (2), a bolt (3), a pretightening force detection sensor (4), a bearing plate (5), a standard force sensor (6), a force transmission shaft (7) and a base (8);
the bolt pretightening force detection system (1) is electrically connected with the pretightening force detection sensor (4), and the pretightening force detection sensor (4) is connected with the bolt (3); the standard force sensor (6) is electrically connected with the force signal acquisition device (2); the bearing plate (5) is provided with a through hole, the bolt (3) penetrates through the through hole to be in threaded connection with the force transmission shaft (7), the force transmission shaft (7) is connected with the bearing part measured by the standard force sensor (6), and the standard force sensor (6), the bearing plate (5) and the base (8) are fixed in position.
2. The bolt pretightening force detection sensor calibration device according to claim 1, wherein the bearing plate (5) is fixedly installed on the base (8); the standard force sensor (6) is fixed on the bearing plate (5) or the base (8) through screws.
3. The calibration device for the bolt pretightening force detection sensor according to claim 1, wherein the lower end of the bolt (3) penetrates through a through hole in the middle of the bearing plate (5) and then is in threaded connection with the force transmission shaft (7); the axes of the bolt (3), the bolt mounting hole on the bearing plate (5), the force transmission shaft (7) and the standard force sensor (6) are coincident.
4. The bolt pretightening force detection sensor calibration device according to claim 1, wherein the pretightening force detection sensor (4) is a force ring sensor or an ultrasonic sensor, when the pretightening force detection sensor (4) is the force ring sensor, the pretightening force detection sensor (4) is sleeved on the outer surface of the thread of the bolt (3), and the pretightening force detection sensor (4) is installed between the bolt (3) and the bearing plate (5); when the pretightening force detection sensor (4) is an ultrasonic sensor, the pretightening force detection sensor (4) is installed above the head of the bolt (3).
5. The bolt pretightening force detection sensor calibration device according to claim 1, wherein the force transmission shaft (7) is circumferentially fixed with the force bearing plate (5) to prevent the force transmission shaft (7) from rotating, and a gap is formed in the axial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921943321.XU CN210464791U (en) | 2019-11-12 | 2019-11-12 | Calibration device for bolt pretightening force detection sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921943321.XU CN210464791U (en) | 2019-11-12 | 2019-11-12 | Calibration device for bolt pretightening force detection sensor |
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| Publication Number | Publication Date |
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| CN210464791U true CN210464791U (en) | 2020-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921943321.XU Active CN210464791U (en) | 2019-11-12 | 2019-11-12 | Calibration device for bolt pretightening force detection sensor |
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| CN (1) | CN210464791U (en) |
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- 2019-11-12 CN CN201921943321.XU patent/CN210464791U/en active Active
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