CN218600760U

CN218600760U - Ultrasonic measurement calibration device for axial stress of bolt

Info

Publication number: CN218600760U
Application number: CN202222888559.5U
Authority: CN
Inventors: 宋祥斌; 周振百; 吴永刚; 蒋理论; 田阔; 房文轩; 马昕彤
Original assignee: Hebei Datang International Chongli Wind Power Co ltd
Current assignee: Hebei Datang International Chongli Wind Power Co ltd
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2023-03-10
Anticipated expiration: 2032-10-31

Abstract

The utility model provides a calibration device is measured to bolt axial stress supersound, including installation mechanism, the installation sleeve, climbing mechanism and measurement calibration mechanism, installation mechanism includes fixed plate and sliding plate, has seted up down the mounting hole on the fixed plate, is equipped with the mounting hole on the sliding plate, and the installation sleeve is cylindricly, including last sleeve and lower sleeve, lower sleeve can be dismantled and locate down in the mounting hole, goes up in the sleeve can be dismantled and locate in the mounting hole, climbing mechanism locates on any in fixed plate and the sliding plate, another in climbing mechanism's power take off end can push away fixed plate and the sliding plate, measure calibration mechanism and include pressure sensor and ultrasonic probe. The utility model discloses a setting includes upper sleeve and lower telescopic installation sleeve, when the diameter of bolt changes, can select the installation sleeve of suitable size earlier, fixes the installation sleeve on the bolt, fixes the installation sleeve in last mounting hole and lower mounting hole again, realizes fixing the bolt of different diameters.

Description

Ultrasonic measurement calibration device for axial stress of bolt

Technical Field

The utility model belongs to the technical field of stress measurement mechanism, more specifically say, relate to a calibration device is measured to bolt axial stress supersound.

Background

With the development of society, environmental issues are more and more emphasized, and in view of the high pollution of traditional fossil energy, the development of new energy becomes a poor choice. It is estimated that the wind resources available on earth to generate electricity are about 100 hundred million kilowatts, which is almost 10 times the amount of hydroelectric power generated worldwide. At present, the energy obtained by burning coal every year all over the world is only one third of the energy provided by wind power in one year. Therefore, wind power is very important for power generation at home and abroad.

The high-strength bolt is a common part in the existing wind power generation facilities, and the high-definition bolt obtains fastening force through the axial extension deformation of the high-strength bolt. The ultrasonic stress detection is based on the acoustic elasticity principle that the ultrasonic wave speed changes along with the change of the stress state, and the material stress is obtained by detecting the change of the ultrasonic wave speed in the material. The ultrasonic stress detection has the characteristics of no harm to a human body, no damage to a measured object, high measurement speed and the like.

Patent document CN202110266940.5 discloses a large bolt axial tensile stress ultrasonic measurement calibration experiment table and method, which can monitor the pretightening force of a bolt without loosening the bolt, specifically, by calibrating the experiment table on a bolt of a certain model and specification in advance, the corresponding relation between the pretightening force and the ultrasonic wave velocity is obtained, and then the actual pretightening force can be obtained for the bolt of the same model in use only by monitoring the ultrasonic wave velocity.

However, in the experimental platform, the bolts are fastened on the mounting mechanisms of the mounting mechanism by clamping nuts at two ends of the bolts on two sides of the mounting mechanism. It is well known that bolts of any diameter, and the corresponding standard nuts, are also fixed in size, for example, if the platform is capable of calibrating bolts with a diameter of 80mm, the diameter of the opening on the mounting mechanism should be no less than 80mm, but bolts with a diameter of 12mm, and the opposite side of the nut is 19mm, obviously the size of the opening is larger than that of the nut, so that the small diameter bolts cannot be mounted on the mounting mechanism, and the experimental platform is difficult to calibrate bolts with different sizes.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a calibration device is measured to bolt axial stress supersound to solve current bolt axial tensile stress supersound and measure the problem of maring that the laboratory bench is difficult to carry out the demarcation to the bolt of unidimensional not.

In order to achieve the purpose, the utility model adopts the technical proposal that: the ultrasonic measurement calibration experiment table for the axial tensile stress of the bolt comprises an installation mechanism, an installation sleeve, a jacking mechanism and a measurement calibration mechanism, wherein the installation mechanism comprises a fixed plate and a sliding plate, the sliding plate is arranged above the fixed plate in a sliding manner, a lower installation hole is formed in the fixed plate, and an upper installation hole is formed in the sliding plate; the mounting sleeve is cylindrical and comprises an upper sleeve and a lower sleeve, the lower sleeve is detachably arranged in the lower mounting hole, the upper sleeve is detachably arranged in the upper mounting hole, and a bolt to be calibrated can be screwed in the upper sleeve and the lower sleeve; the jacking mechanism is arranged on the fixed plate, and a power output end of the jacking mechanism can extend outwards and push the sliding plate to slide; the measurement calibration mechanism comprises a pressure sensor and an ultrasonic probe, the pressure sensor is positioned between the power output end of the jacking mechanism and the sliding plate, and the ultrasonic probe is positioned below the fixed plate.

In a possible implementation manner, the lower mounting hole and the upper mounting hole are threaded holes, and threads matched with the threaded holes are arranged on the outer wall of the mounting sleeve.

In a possible implementation manner, one end of the mounting sleeve is provided with a limiting ring, and the inner diameter of the limiting ring is the same as the outer diameter of the mounting sleeve.

In a possible implementation mode, the device further comprises a lengthening sleeve, wherein the lengthening sleeve is cylindrical, and threads are arranged on the inner wall and the outer wall of the lengthening sleeve.

In a possible implementation manner, the mounting mechanism includes side plates disposed on two sides of the fixed plate, two connecting plates are connected between the side plates, the connecting plates are arranged at intervals, and the side walls of the sliding plates are respectively abutted to the corresponding side plates or the corresponding connecting plates.

In a possible implementation manner, the bottom of the side plate is provided with an extending hole, the jacking mechanism is a hydraulic jack, and a nozzle tip of the hydraulic jack extends out of the outer side of the mounting mechanism through the extending hole.

In a possible implementation manner, the top end of the side plate is detachably provided with a sealing ring.

In one possible implementation, the bottom of the mounting mechanism is provided with a plurality of legs, and the length of each leg can be adjusted.

In a possible implementation manner, the supporting leg comprises a mounting plate, a supporting rod and a supporting cylinder, the supporting rod is arranged on the mounting plate, the supporting cylinder is in threaded connection with the supporting rod, and the top end of the mounting plate is fixedly arranged on the fixing plate.

In a possible implementation manner, the ultrasonic monitoring device further comprises a PLC control mechanism and a storage mechanism, the pressure sensor and the ultrasonic probe are electrically connected with the PLC control mechanism, the PLC control mechanism can control the pressure applied by the jacking mechanism, and the storage mechanism can record data transmitted by the pressure sensor and the ultrasonic probe.

The utility model provides a bolt axial stress ultrasonic measurement calibration device's beneficial effect lies in: compared with the prior art, the utility model discloses through setting up installation mechanism, can be convenient for fix the bolt of treating the calibration, through setting up climbing mechanism again, can be convenient for apply the stress of axial to the bolt of treating the calibration, through setting up the measurement calibration mechanism finally, can collect the stress information and the sound time information of the bolt of treating the calibration, thus treat the bolt of calibrating and calibrate; in addition, through setting up the installation sleeve including upper sleeve and lower sleeve, when the diameter of bolt changes, can select the installation sleeve of suitable size earlier, fix the installation sleeve on the bolt, fix the installation sleeve in last mounting hole and lower mounting hole again, realize the fixing to the bolt of different diameters, solved current bolt axial tensile stress ultrasonic measurement and markd the problem that the laboratory bench is difficult to carry out the demarcation to the bolt of not unidimensional, improved the utility model discloses a bolt axial stress ultrasonic measurement calibration device commonality and suitability.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic structural view of an ultrasonic measurement and calibration device for axial stress of a bolt provided by an embodiment of the present invention;

fig. 2 is a schematic cross-sectional structure view of an ultrasonic measurement calibration apparatus for axial stress of a bolt in a second installation state according to an embodiment of the present invention;

fig. 3 is a schematic cross-sectional structural view of an ultrasonic measurement calibration apparatus for axial stress of a bolt in a third installation state provided by the embodiment of the present invention;

fig. 4 is a schematic structural view of a lower sleeve according to an embodiment of the present invention;

fig. 5 is a circuit block diagram of the ultrasonic measurement calibration apparatus for axial stress of bolt provided by the embodiment of the present invention.

Wherein the reference numerals in the figures are as follows:

1. an installation mechanism; 2. a jacking mechanism; 3. a lower sleeve; 4. an ultrasonic probe; 5. lengthening the sleeve; 6. a support leg;

101. a fixing plate; 102. a sliding plate; 103. a side plate; 104. a connecting plate; 105. sealing a ring;

201. a nozzle tip;

301. an upper sleeve; 302. a limiting ring;

401. a pressure sensor;

601. mounting a plate; 602. a support bar; 603. a support cylinder.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

It should be further noted that the drawings and embodiments of the present invention mainly describe the concept of the present invention, and on the basis of the concept, the specific forms and arrangements of some connection relationships, position relationships, power mechanisms, power supply mechanisms, hydraulic mechanisms, control mechanisms, etc. may not be completely described, but those skilled in the art can implement the specific forms and arrangements in a well-known manner on the premise that those skilled in the art understand the concept of the present invention.

When an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

The terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced mechanism or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

The terms "first", "second" and "first" are used 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 one or more of that feature. In the description of the present invention, "a plurality" means two or more, and "several" means one or more unless specifically limited otherwise.

It is right now the utility model provides a bolt axial stress ultrasonic measurement calibration device explains.

Referring to fig. 1 and fig. 2 together, the ultrasonic measurement and calibration device for axial stress of a bolt comprises an installation mechanism 1, an installation sleeve, a jacking mechanism 2 and a measurement and calibration mechanism, wherein the installation mechanism 1 comprises a fixed plate 101 and a sliding plate 102, the sliding plate 102 is slidably arranged above the fixed plate 101, a lower installation hole is formed in the fixed plate 101, and an upper installation hole is formed in the sliding plate 102; the mounting sleeve is cylindrical and comprises an upper sleeve 301 and a lower sleeve 3, the lower sleeve 3 is detachably arranged in the lower mounting hole, the upper sleeve 301 is detachably arranged in the upper mounting hole, and a bolt to be calibrated can be screwed in the upper sleeve 301 and the lower sleeve 3; the jacking mechanism 2 is arranged on the fixed plate 101, and a power output end of the jacking mechanism 2 can extend outwards and push the sliding plate 102 to slide; the measuring and calibrating mechanism comprises a pressure sensor 401 and an ultrasonic probe 4, wherein the pressure sensor 401 is positioned between the power output end of the jacking mechanism 2 and the sliding plate 102, and the ultrasonic probe 4 is positioned below the fixed plate 101.

The ultrasonic measurement calibration device for the axial stress of the bolt provided by the embodiment has the beneficial effects that: compared with the prior art, the ultrasonic measurement calibration device for the axial stress of the bolt provided by the embodiment can be used for fixing the bolt to be calibrated by arranging the mounting mechanism 1, can be used for applying axial stress to the bolt to be calibrated by arranging the jacking mechanism 2, and can be used for collecting stress information and sound time information of the bolt to be calibrated by arranging the measurement calibration mechanism so as to calibrate the bolt to be calibrated. In addition, through setting up the installation sleeve including upper sleeve 301 and lower sleeve 3, when the diameter of bolt changes, can select the installation sleeve of suitable size earlier, fix the installation sleeve on the bolt, fix the installation sleeve in upper mounting hole and lower mounting hole again, realize the fixed to the bolt of different diameters, solved current bolt axial tensile stress ultrasonic measurement and markd the problem that the laboratory bench is difficult to carry out the demarcation to the bolt of different sizes, improved the utility model discloses a bolt axial stress ultrasonic measurement calibration device commonality and suitability.

Based on above design thought, lower mounting hole and last mounting hole in this embodiment are the screw hole, are equipped with the screw thread of looks adaptation on the outer wall of installation sleeve for upper sleeve 301 can the spiro union in last mounting hole, and lower sleeve 3 can the spiro union in the mounting hole again.

Of course, the screw connection is only a preferred option, and may be a through hole in the upper and lower mounting holes, the upper sleeve 301 is directly inserted into the upper mounting hole, and the lower sleeve 3 is directly inserted into the lower mounting hole. Corresponding threaded holes are formed in the side walls of the upper sleeve 301 and the upper mounting hole, and a bolt penetrates through the fixing plate 101 and is screwed in the lower sleeve 3 to fix the lower sleeve 3; the side walls of the lower sleeve 3 and the lower mounting hole are correspondingly provided with threaded holes, and bolts penetrate through the sliding plate 102 and are screwed in the upper sleeve 301 to fix the upper sleeve 301.

In the first installation state, the diameter of the bolt is the same as the diameters of the upper installation hole and the lower installation hole, one end of the bolt is in threaded connection with the upper installation hole, and the other end of the bolt is in threaded connection with the lower installation hole, so that the bolt is fixed on the installation mechanism 1.

In the second installation state, the diameter of the bolt is smaller than the diameters of the upper installation hole and the lower installation hole, the installation sleeve with the inner diameter being the same as the diameter of the bolt is selected, after the installation of the installation sleeve is completed, one end of the bolt is in threaded connection with the lower sleeve 3, and the other end of the bolt is in threaded connection with the upper sleeve 301, so that the bolt is fixed on the installation mechanism 1.

In addition, the upper sleeve 301 and the lower sleeve 3 have the same structure, and as shown in fig. 4, one end of the mounting sleeve is provided with a limit ring 302, and the inner diameter of the limit ring 302 is the same as the outer diameter of the mounting sleeve. The limiting ring 302 is arranged, so that when one end of the limiting ring 302 abuts against the fixed plate 101 or the sliding plate 102, the mounting sleeve cannot rotate relative to the fixed plate 101 or the sliding plate 102, and the bolt is screwed in the mounting sleeve when the mounting sleeve exists.

In a specific embodiment, as shown in fig. 2, the device further comprises an extension sleeve 5, wherein the extension sleeve 5 is cylindrical, and threads are arranged on the inner wall and the outer wall of the extension sleeve 5. As shown in fig. 3, in the third installation state, the diameter of the bolt is smaller than the diameters of the lower installation hole and the upper installation hole, and the length of the bolt is not long enough to enable one end of the bolt to be screwed in the lower installation hole while the other end of the bolt is screwed in the upper installation hole, after the lower sleeve 3 is installed, the extension sleeve 5 is screwed in the upper installation hole, one end of the extension sleeve 5 extends out of the sliding plate 102 towards the fixing plate 101, one end of the bolt is screwed in the lower sleeve 3, and the other end of the bolt is screwed in the extension sleeve 5, so that the shorter bolt can be fixed on the installation mechanism 1.

As shown in fig. 1, the mounting mechanism 1 includes side plates 103 provided on both sides of a fixed plate 101, two connecting plates 104 are connected between the side plates 103, the connecting plates 104 are arranged at intervals, and the side walls of the sliding plate 102 are respectively abutted against the corresponding side plates 103 or the corresponding connecting plates 104. The side plates 103 and the connecting plates 104 are provided to guide the movement of the sliding plate 102, and prevent the sliding plate 102 from falling when the bolts are not installed.

Of course, in order to further prevent the sliding plate 102 from falling off, the top end of the side plate 103 is detachably provided with a seal ring 105. The seal ring 105 is square, and a square hole is formed in the middle of the seal ring, and the size of the square hole is smaller than that of the sliding plate 102. The seal ring 105 is screwed to the side plate 103. When the slide plate 102 moves to the uppermost end, it comes into contact with the seal ring 105, and cannot move upward any more, and is prevented from coming off from above the side plate 103 and the connection plate 104.

Preferably, the bottom of the side plate 103 is provided with an extending hole, the jacking mechanism 2 is a hydraulic jack, the hydraulic jack is fixed on the fixed plate 101, the power output end of the hydraulic jack is arranged towards the sliding plate 102, and a nozzle 201 of the hydraulic jack extends out of the outer side of the mounting mechanism 1 through the extending hole, so that the hydraulic system can be conveniently mounted and connected.

As shown in fig. 5, the ultrasonic measurement and calibration device for axial stress of bolt of this embodiment further includes a PLC control mechanism and a storage mechanism, the pressure sensor 401 and the ultrasonic probe 4 are all electrically connected to the PLC control mechanism, the PLC control mechanism can control the pressure applied by the jacking mechanism 2, and the storage mechanism can record data transmitted by the pressure sensor 401 and the ultrasonic probe 4. The ultrasonic probe 4 is arranged below the fixing plate 101 and can detect sound time information of the bolt, the PLC control mechanism can control pressure applied by the jacking mechanism 2, record data transmitted by the pressure sensor 401 and the ultrasonic probe 4, and correspond sound time signal changes and axial tensile force borne by the bolt one by one, so that calibration of ultrasonic stress measurement of the bolt is realized.

Finally, installation mechanism 1's bottom is equipped with a plurality of landing legs 6, and the length of each landing leg 6 is adjustable, can be convenient for make the utility model discloses a bolt axial stress ultrasonic measurement calibration device can still keep the level under the abominable regulation of experimental environment, prevents to empty, improves the suitability of mechanism. Specifically, the supporting leg 6 includes a mounting plate 601, a supporting rod 602 and a supporting cylinder 603, the supporting rod 602 is disposed on the mounting plate 601, the supporting cylinder 603 is screwed on the supporting rod 602, and the top end of the mounting plate 601 is fixedly disposed on the fixing plate 101.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, but rather as the following description is intended to cover all modifications, equivalents and improvements which may fall within the spirit and principles of the present invention.

Claims

1. The utility model provides a calibration device is measured to bolt axial stress supersound which characterized in that includes:

the mounting mechanism (1) comprises a fixed plate (101) and a sliding plate (102), wherein the sliding plate (102) is arranged above the fixed plate (101) in a sliding manner, a lower mounting hole is formed in the fixed plate (101), and an upper mounting hole is formed in the sliding plate (102);

the mounting sleeve comprises an upper sleeve (301) and a lower sleeve (3), the lower sleeve (3) is detachably arranged in the lower mounting hole, the upper sleeve (301) is detachably arranged in the upper mounting hole, and a bolt to be calibrated can be screwed in the upper sleeve (301) and the lower sleeve (3);

the jacking mechanism (2) is arranged on the fixed plate (101), and the power output end of the jacking mechanism (2) can extend outwards and push the sliding plate (102) to slide;

the measuring and calibrating mechanism comprises a pressure sensor (401) and an ultrasonic probe (4), wherein the pressure sensor (401) is located between the power output end of the jacking mechanism (2) and the sliding plate (102), and the ultrasonic probe (4) is located below the fixing plate (101).

2. The ultrasonic measurement calibration device for the axial stress of the bolt as claimed in claim 1, wherein: the lower mounting hole and the upper mounting hole are threaded holes, and threads matched with the threaded holes are arranged on the outer wall of the mounting sleeve.

3. The ultrasonic measurement calibration device for the axial stress of the bolt as claimed in claim 2, wherein: one end of the mounting sleeve is provided with a limiting ring (302), and the inner diameter of the limiting ring (302) is the same as the outer diameter of the mounting sleeve.

4. The ultrasonic measurement calibration device for the axial stress of the bolt as claimed in claim 2, wherein: the novel screw rod is characterized by further comprising a lengthening sleeve (5), wherein the lengthening sleeve (5) is cylindrical, and threads are arranged on the inner wall and the outer wall of the lengthening sleeve (5).

5. The ultrasonic measurement and calibration device for the axial stress of the bolt as recited in claim 1, characterized in that: the mounting mechanism (1) further comprises side plates (103) arranged on two sides of the fixing plate (101), two connecting plates (104) are connected between the side plates (103), the connecting plates (104) are arranged at intervals, and the side walls of the sliding plate (102) are respectively abutted against the corresponding side plates (103) or the corresponding connecting plates (104).

6. The ultrasonic measurement calibration device for the axial stress of the bolt as claimed in claim 5, wherein: the bottom of curb plate (103) is equipped with and stretches out the hole, climbing mechanism (2) are hydraulic jack, hydraulic jack's glib talker (201) warp it stretches out to stretch out the outside of installation mechanism (1).

7. The ultrasonic measurement calibration device for the axial stress of the bolt as claimed in claim 6, wherein: the top end of the side plate (103) is detachably provided with a seal ring (105).

8. The ultrasonic measurement calibration device for the axial stress of the bolt as claimed in claim 1, wherein: the bottom of the mounting mechanism (1) is provided with a plurality of supporting legs (6), and the length of each supporting leg (6) can be adjusted.

9. The ultrasonic measurement calibration device for the axial stress of the bolt as claimed in claim 8, wherein: landing leg (6) are including mounting panel (601), bracing piece (602) and a support section of thick bamboo (603), bracing piece (602) are located on mounting panel (601), a support section of thick bamboo (603) spiro union is in on bracing piece (602), the top of mounting panel (601) set firmly in on fixed plate (101).

10. The ultrasonic measurement calibration device for the axial stress of the bolt as claimed in claim 1, wherein: the ultrasonic monitoring device is characterized by further comprising a PLC control mechanism and a storage mechanism, wherein the storage mechanism, the pressure sensor (401) and the ultrasonic probe (4) are electrically connected with the PLC control mechanism, the PLC control mechanism can control the pressure applied by the jacking mechanism (2), and the storage mechanism can record data transmitted by the pressure sensor (401) and the ultrasonic probe (4).