CN209745449U - Ultrasonic wave bolt stress measuring instrument - Google Patents
Ultrasonic wave bolt stress measuring instrument Download PDFInfo
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- CN209745449U CN209745449U CN201920652808.6U CN201920652808U CN209745449U CN 209745449 U CN209745449 U CN 209745449U CN 201920652808 U CN201920652808 U CN 201920652808U CN 209745449 U CN209745449 U CN 209745449U
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- ultrasonic signal
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Abstract
The utility model discloses an ultrasonic wave bolt stress measuring instrument, which is used for measuring the bolt stress under the working state and comprises an instrument body, wherein a measuring circuit is arranged in the instrument body; the ultrasonic generator also comprises an ultrasonic signal generator and a generator fixing piece; the generator fixing piece comprises a cylinder body with an internal thread in the middle and a sucker arranged outside one end of the cylinder body in a surrounding mode; the ultrasonic signal generator is externally provided with an external thread shell matched with the barrel body, is in threaded connection with the inside of the barrel body through the external thread shell and can enter and exit the barrel body through threaded rotation; and one side of the instrument body is provided with a sampling interface connected with the measuring circuit, and the ultrasonic signal generator is electrically connected with the sampling interface through a lead. The measuring instrument is simple in structure and reasonable in design, and can be directly and stably contacted with a bolt in a working state so as to achieve the purpose of directly measuring the stress of the bolt in the working state.
Description
Technical Field
The utility model relates to an ultrasonic wave bolt stress measuring apparatu.
Background
The bolt stress tester can accurately and quickly measure the stress and the strain of the fastened bolt, has the characteristics of convenience in use, visual display, convenience in carrying and the like, and is an important detection device in bolt processing. When the detection equipment is used for detecting the unused bolt, the detection equipment is very convenient, but if the stress of the bolt in a working state needs to be detected, the probe of the detection equipment can only be arranged at the bolt head or the thread end of the bolt, when the bolt is arranged at a horizontal position or a ceiling and the like, the probe cannot be fixed, the probe needs to be manually fixed on the bolt, time and labor are wasted, and measurement errors are likely to be caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the technical problem, provide an ultrasonic wave bolt stress measuring apparatu, this measuring apparatu simple structure, reasonable in design can be directly with the bolt stable contact under the operating condition to reach the purpose of the bolt stress under the direct measurement operating condition.
In order to achieve the above object, the utility model adopts the following technical scheme:
An ultrasonic bolt stress measuring instrument is used for measuring the bolt stress in a working state and comprises an instrument body, wherein a measuring circuit is arranged in the instrument body; the ultrasonic generator also comprises an ultrasonic signal generator and a generator fixing piece; the generator fixing piece comprises a cylinder body with an internal thread in the middle and a sucker arranged outside one end of the cylinder body in a surrounding mode; the ultrasonic signal generator is externally provided with an external thread shell matched with the barrel body, is in threaded connection with the inside of the barrel body through the external thread shell and can enter and exit the barrel body through threaded rotation; and one side of the instrument body is provided with a sampling interface connected with the measuring circuit, and the ultrasonic signal generator is electrically connected with the sampling interface through a lead.
Specifically, the sucker comprises a cylindrical rubber ring extending along the end part of the cylinder body and an annular disc edge arranged around the outer side of the end part of the cylinder body; the disc is arc-shaped along the cross section and extends towards the bolt to be tested, and an annular sucker cavity is formed between the disc edge and the cylindrical rubber ring.
Specifically speaking, the barrel is equipped with the annular groove of stepping down with the one end inboard that the rubber circle meets, and the internal diameter in this annular groove of stepping down is greater than the external diameter of the bolt that awaits measuring.
More specifically, the ultrasonic signal generator is internally provided with a magnetic temperature probe capable of automatically compensating temperature.
Compared with the prior art, the utility model discloses following beneficial effect has:
(1) The utility model discloses ingenious having set up the generator mounting and will be fixed to the bolt under the operating condition as measuring probe's ultrasonic signal generator, solved the difficult problem with the bolt fastening of probe, the measurement of bolt stress under the light realization operating condition.
(2) The utility model discloses a generator mounting only includes barrel and sucking disc, and its sucking disc still adopts the theory of operation of current sucking disc, and has carried out ingenious improvement to its structure. This sucking disc comprises rubber circle and annular dish edge, on the one hand is the barrel inner chamber at middle part stepping down, and then make ultrasonic signal generator can follow this department spiral business turn over and fix to the bolt that awaits measuring on, on the other hand then by rubber circle and annular dish edge formation annular sucking disc chamber, push down it during the use, the air in discharge annular sucking disc chamber, because the setting of rubber circle, the logical chamber that makes in the barrel can not leak gas and enter, can realize the fixed of generator mounting. The structure is ingenious in design, simple in structure, convenient to manufacture, simple in fixing operation and high in practicability.
(3) the utility model discloses only need carry out the improvement of adaptability to ultrasonic signal generator, be about to its outside set up with barrel assorted external screw thread casing can, and need not other changes, can reach the purpose, improve with low costs, and do not increase the preparation degree of difficulty.
(4) The utility model discloses an ultrasonic signal measures bolt stress, and ultrasonic signal generator's receiving and dispatching is all along the bolt axial, and the utility model discloses a generator mounting acts on the installation face of bolt, and the barrel is fixed with ultrasonic signal generator side, also can not direct action in the ultrasonic signal generator in the external screw thread casing, consequently can not influence its measurement precision completely.
(5) The utility model discloses a generator mounting still can regard as solitary accessory to use, a generator mounting can with many measuring apparatu adaptations, adaptability, practicality are strong.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 shows the generator fixing member of the present invention.
Wherein, the names corresponding to the reference numbers are:
1-an instrument body, 2-an ultrasonic signal generator, 3-a barrel, 31-an annular abdicating groove, 4-a sucker, 41-a rubber ring, 42-a rim, 43-an annular sucker cavity, 5-a sampling structure, 6-a lead and 7-an external thread shell.
Detailed Description
The present invention will be further described with reference to the following description and examples, which include but are not limited to the following examples.
The embodiment provides an ultrasonic wave bolt stress measuring instrument, and the problem that a measuring probe in the prior art cannot be fixed on a bolt in a working state, so that time and labor are wasted, and measuring errors can be caused even is solved. Specifically, as shown in fig. 1 and fig. 2, the main body of the measuring instrument used in the present embodiment is basically the same as that in the prior art, and both includes an instrument body 1 and an ultrasonic signal generator 2, and a measuring circuit is arranged in the instrument body; the instrument body 1 and the measuring circuit are not improved, and the structure, the working principle and the like of the instrument body are the same as those of the prior art, so that the instrument body and the measuring circuit are not described in detail. The greatest improvement of this embodiment is the generator mounting.
In detail, the generator fixing piece is skillfully designed, and comprises a barrel body 3 with internal threads in the middle and a sucker 4 arranged outside one end of the barrel body in a surrounding manner; in consideration of the fact that the cylinder body 3 is internally provided with a through cavity and therefore cannot be sealed, the structure of the suction cup 4 of the embodiment is skillfully improved except for the working principle, the suction cup 4 comprises a cylindrical rubber ring 41 extending along the end part of the cylinder body and an annular disc edge 42 arranged around the outer side of the end part of the cylinder body; the section of the sucker disc edge is arc-shaped like an umbrella which is opened towards the bolt to be measured and is provided with a middle part, the umbrella extends towards the bolt to be measured, and an annular sucker cavity 43 is formed between the disc edge and the cylindrical rubber ring. When the generator fixing piece is used, the barrel is firstly aligned to the bolt head or the bolt thread end of the bolt to be detected and covered, the disc edge 42 is enabled to be abutted to the installation surface of the bolt, then gas in the annular sucking disc cavity 43 is discharged in a pressing mode, due to the arrangement of the disc edge and the rubber ring, external gas cannot enter the annular sucking disc cavity from the outside, and cannot enter the annular sucking disc cavity from the through cavity in the barrel, and the fixing of the generator fixing piece is achieved at the moment. The fixed barrel axis coincides with the axis of bolt, and the ultrasonic signal generator 2 similar to the instrument of giving the measuring provides one with the communicating extension installing port of bolt, only needs to arrange ultrasonic signal generator 2 in wherein, can realize its stable contact with the bolt, and need not the people and hand, labour saving and time saving to stability is better, is favorable to obtaining more accurate measuring result.
The measurement of a horizontally or obliquely mounted bolt can be achieved by directly placing the ultrasonic signal generator 2 in the cylinder, but for a top-mounted bolt, it is very easy to drop out, and, because the ultrasonic signal generator 2 is not stable, if an external force accidentally touches the cylinder or pulls the ultrasonic signal generator, the ultrasonic signal generator 2 may be displaced, therefore, the present embodiment also improves the adaptability of the ultrasonic signal generator 2, namely, the external part of the ultrasonic generator is provided with an external thread shell 7 matched with the cylinder body, the ultrasonic signal generator is connected in the cylinder body through the external thread shell 7 in a threaded manner and can also enter and exit the cylinder body through the threaded rotation, even if the bolt falls into the installation surface, the ultrasonic signal generator can be rotated to be embedded therewith, so that the purpose of measurement is achieved. And instrument body one side is equipped with sampling interface 5 with measurement circuit links to each other, ultrasonic signal generator 2 is connected with sampling interface electricity through wire 6, promptly install the generator mounting and after the spiral installation ultrasonic signal generator 2, say again that wire 6 inserts sampling interface 5, can measure the operation. In order to reduce the dead weight, the cylinder body can also be directly made of PVC materials.
Here, it should be noted that, the cylinder and the rubber ring of this embodiment should not directly contact with the bolt, so as not to affect the measurement result, therefore, in this embodiment, the inside of the end of the cylinder 3 connected to the rubber ring 41 is provided with the annular abdicating groove 31, and the inner diameter of the annular abdicating groove is greater than the outer diameter of the bolt to be measured, so that the bolt is directly covered outside when the annular abdicating groove is installed.
In addition, in this embodiment, a magnetic temperature probe is built in the ultrasonic signal generator 2, so as to simultaneously implement temperature detection, and the magnetic temperature probe may be any one of the magnetic temperature probes in the prior art that can automatically perform temperature compensation, which is not specifically limited herein.
the measurement of this embodiment is in order can easily realize the bolt stress measurement under operating condition, and its simple structure, design benefit, operation labour saving and time saving, and measurement accuracy is also higher.
The above embodiment is only one of the preferred embodiments of the present invention, and should not be used to limit the protection scope of the present invention, but all the insubstantial changes or modifications made in the spirit and the idea of the main design of the present invention, the technical problems solved by the embodiment are still consistent with the present invention, and all should be included in the protection scope of the present invention.
Claims (4)
1. An ultrasonic bolt stress measuring instrument is used for measuring the bolt stress in a working state and comprises an instrument body (1), wherein a measuring circuit is arranged in the instrument body; the ultrasonic generator is characterized by also comprising an ultrasonic signal generator (2) and a generator fixing piece; the generator fixing piece comprises a cylinder body (3) with an internal thread in the middle and a sucker (4) arranged outside one end of the cylinder body in a surrounding mode; an external thread shell (7) matched with the barrel is arranged outside the ultrasonic signal generator (2), and the ultrasonic signal generator is in threaded connection with the inside of the barrel through the external thread shell (7) and can enter and exit the barrel through thread rotation; one side of the instrument body is provided with a sampling interface (5) connected with the measuring circuit, and the ultrasonic signal generator (2) is electrically connected with the sampling interface through a lead (6).
2. An ultrasonic bolt stress gauge according to claim 1, wherein the suction cup (4) comprises a cylindrical rubber ring (41) extending along the end of the barrel (3), and an annular rim (42) arranged around the outside of the end of the barrel; the section of the disc edge (42) is arc-shaped and extends towards the bolt to be tested, and an annular suction disc cavity (43) is formed between the disc edge and the cylindrical rubber ring.
3. an ultrasonic bolt stress measuring instrument according to claim 2, characterized in that an annular abdicating groove (31) is arranged on the inner side of one end of the cylinder (3) connected with the rubber ring (41), and the inner diameter of the annular abdicating groove is larger than the outer diameter of the bolt to be measured.
4. An ultrasonic bolt stress gauge according to claim 3, wherein the ultrasonic signal generator (2) is built in with a magnetic temperature probe that can automatically compensate for temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920652808.6U CN209745449U (en) | 2019-05-08 | 2019-05-08 | Ultrasonic wave bolt stress measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920652808.6U CN209745449U (en) | 2019-05-08 | 2019-05-08 | Ultrasonic wave bolt stress measuring instrument |
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| Publication Number | Publication Date |
|---|---|
| CN209745449U true CN209745449U (en) | 2019-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920652808.6U Active CN209745449U (en) | 2019-05-08 | 2019-05-08 | Ultrasonic wave bolt stress measuring instrument |
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| CN (1) | CN209745449U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111473898A (en) * | 2020-04-08 | 2020-07-31 | 江苏科技大学 | Method for correcting influence of thickness of cladding layer on ultrasonic evaluation of stress of cladding layer |
-
2019
- 2019-05-08 CN CN201920652808.6U patent/CN209745449U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111473898A (en) * | 2020-04-08 | 2020-07-31 | 江苏科技大学 | Method for correcting influence of thickness of cladding layer on ultrasonic evaluation of stress of cladding layer |
| CN111473898B (en) * | 2020-04-08 | 2021-07-13 | 江苏科技大学 | Method for correcting influence of thickness of cladding layer on ultrasonic evaluation of stress of cladding layer |
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