CN214250863U - Deformation measuring device for loading structural part - Google Patents
Deformation measuring device for loading structural part Download PDFInfo
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- CN214250863U CN214250863U CN202023036991.9U CN202023036991U CN214250863U CN 214250863 U CN214250863 U CN 214250863U CN 202023036991 U CN202023036991 U CN 202023036991U CN 214250863 U CN214250863 U CN 214250863U
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Abstract
The utility model provides a loading structure deformation measuring device, including transmission body, first magnetic field body and sensor, the load is connected to the transmission body, the load is installed on the structure, the deformation or the meeting an emergency of structure can order about first magnetic field body motion, the sensor with first magnetic field body interval arrangement, when the load is loaded on the structure, the structure produces deformation or meets an emergency and then makes the transmission body drive first magnetic field body motion, and then can realize the measurement of deformation volume or dependent variable, the utility model discloses can realize that the structure provides the quantitative basis of numerical value for ideal assembly or stress distribution in the installation owing to the deformation or the detection of meeting an emergency that the loading produced to know assembly process and realize the optimal assembly, and can adopt multiple structural style to realize that the practicality is strong.
Description
Technical Field
The utility model relates to a measure technical field, specifically, relate to a loading structure deformation measuring device.
Background
In the process of increasing heavy load of a large structural member, due to the change of applied load, the mounting support structural member generates quasi-static or dynamic strain or deformation in the assembly process, the deformation is usually small, but the stress distribution change of the whole mounting structure can be caused, and the problems of inconsistent structure deformation and the like are caused.
At present, the deformation (usually tiny deformation) cannot be monitored in real time, and further real-time installation regulation and control of heavy-duty parts or equipment cannot be realized, the loading stress distribution cannot meet design requirements, finally, the regulation and control process is complex, repeated work is numerous, the regulation and control efficiency is extremely low, and even under some conditions, the structural deformation is not determined initially during installation, and the normal use of large-scale equipment or a whole system is influenced or the service life of the equipment is influenced finally.
Patent document CN104215193A discloses an object plane deformation measurement method and a measurement system, wherein the object plane deformation measurement method includes: determining three-dimensional shape data of an object surface to be detected; determining original deformation measurement data of the object surface to be measured through laser speckle interferometry; and correcting the deformation measurement data according to the three-dimensional shape data to obtain final three-dimensional deformation distribution data of the object surface to be detected, but the method cannot obtain accurate deformation data when the appearance of the structural part to be detected is shielded by a heavy object or a part, so that the detection result is influenced.
SUMMERY OF THE UTILITY MODEL
To the defect among the prior art, the utility model aims at providing a load structure deformation measuring device.
According to the utility model provides a pair of loading structure deformation measuring device, include:
a transmission body connecting a load, the load being mounted on a structure;
a first magnetic field body, wherein deformation or strain of the structure is capable of moving the first magnetic field body;
a sensor spaced from the first magnetic field body.
Preferably, the first magnetic field body adopts any one of the following connection structures:
the first magnetic field body is mounted at the end of the transmission body and arranged at a distance from the sensor;
-further comprising a connecting lever and a support, wherein one end of the connecting lever is movably matched with the other end of the transmission body, the other end of the connecting lever is provided with the first magnetic field body, the first magnetic field body is arranged in a clearance with the sensor, the support is movably matched with a supporting point on the connecting lever, the connecting lever is provided with a first force arm at one side of the supporting point facing the transmission body, the connecting lever is provided with a second force arm at one side of the supporting point facing the first magnetic field body, and the second force arm is larger than the first force arm;
-a receiving body is arranged in the structural member, a diaphragm is arranged at one end of the receiving body, a first receiving chamber and a second receiving chamber are arranged in the receiving body in sequence from one end to the other end, a piston member is arranged in the second receiving chamber and divides the second receiving chamber into a first receiving space and a second receiving space, and the second receiving space is communicated with the outside through a vent hole arranged at the other end of the receiving body;
one end of the piston piece is connected with the inner wall of the accommodating body through an elastic body arranged in the second accommodating space, and the other end of the piston piece is connected with a first magnetic field body which is in clearance connection with a sensor arranged in the first accommodating chamber;
the other end of the transmission body is connected with the diaphragm, the first containing chamber and the first containing space are filled with fluid, and when the transmission body moves towards the diaphragm, the diaphragm pushes the fluid to move towards the first containing space so as to enable the piston piece to drive the first magnetic field body to move away from the sensor.
Preferably, the cross-sectional area of the first accommodation chamber is larger than the cross-sectional area of the second accommodation chamber.
Preferably, the support is made of a piezoelectric material and/or a magnetostrictive material.
Preferably, the other end of the piston member is connected with the first magnetic field body through a connecting rod.
Preferably, the membrane is a metal or non-metal membrane.
Preferably, the first magnetic field body is a permanent magnet or an electromagnet.
Preferably, the sensor comprises a sensor housing, a magnetostrictive body, and a piezoelectric body;
the magnetostrictive body and the piezoelectric body are sequentially arranged in the sensor shell.
Preferably, a second magnetic field body is arranged in the circumferential direction of the magnetostrictive body.
Preferably, the second magnetic field body adopts an electromagnet or a combination of a permanent magnet and an electromagnet.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the utility model discloses can realize the measuring of deformation or meeting an emergency that the mounting process in the structure spare produced because the loading to for ideal assembly or stress distribution provide numerical value quantization basis, and then guide loading and assembling process, make assembling process realize the optimal assembly, not only can guarantee the normal operating of installation back equipment, can also prolong the life of equipment in some occasions.
2. The utility model discloses can be through multiple structure embodiment to the produced signal of telecommunication of deformation of structural component and then enlarge, improve the detectivity and the precision of equipment greatly, in practical application, can be according to the reasonable selection of different application scenes.
3. The utility model discloses a structure setting in embodiment 4 makes the transmission body need not special material, and the displacement can be enlargied to the liquid of filling in the holding body, improves the sensitivity that detects, and the plug part that lives can drive first magnetic field body in real time under the effect of spring and the first combined action that holds cavity fluid drive negative pressure simultaneously resets, has improved the detection precision greatly.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a schematic structural diagram of embodiment 2 of the present invention;
fig. 2 is a schematic structural diagram of embodiment 3 of the present invention;
fig. 3 is a schematic structural diagram of embodiment 4 of the present invention.
The figures show that:
The piston part 12 of the magnetic field body 2
Second magnetic field 17 of support 7
Connecting rod 18 of containing body 8
Detailed Description
The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.
Example 1:
the utility model provides a loading structure deformation measuring device, including transmission body 1, first magnetism field body 2 and sensor 3, transmission body 1 connects load 4, load 4 installs on structure 5, structure 5 can order about first magnetism field body 2 motion owing to the deformation or the strain that load 4 produced, sensor 3 is used for detecting the displacement that first magnetism field body 2 produced owing to the motion, when load 4 is loaded on structure 5 owing to the weight of itself, owing to self motion or because the power that self weight and self motion's combined action produced, structure 5 produces deformation or micro deformation and then makes the other end of transmission body 1 can drive first magnetism field body 2 motion, the displacement between first magnetism field body 2 and sensor 3 changes in the process of first magnetism field body 2 motion, the magnetic field intensity around the sensor 3 changes and can detect the displacement generated by the movement of the first magnetic field body 2.
Further, the first magnetic field body 2 is preferably a permanent magnet, a magnetic field is generated around the first magnetic field body 2, the sensor 3 comprises a sensor shell, a magnetostrictive body 15 and a piezoelectric body 16, wherein the magnetostrictive body 15 and the piezoelectric body 16 are sequentially arranged in the sensor shell, the magnetostrictive body 15 is made of magnetostrictive material, the piezoelectric body 16 is made of piezoelectric material, when the first magnetic field 2 moves close to or far from the sensor 3, the magnetostrictive body 15 generates an extension or shortening deformation due to the change of the magnetic field, at this time, the piezoelectric body 16 connected with the magnetostrictive body 15 is squeezed or loosened to generate a changing electric signal, the changing electric signal corresponds to the deformation of the structural member 5, by detecting the varying electrical signals, an accurate measurement of the deformation or micro-deformation of the structural member 5 can be achieved. In one variant, the first magnetic field body 2 is an electromagnet, such as an electromagnetic coil.
In practical use, in order to make the detection more sensitive, the second magnetic field 17 is preferably added to the circumference of the magnetostrictive body 15, the second magnetic field 17 is preferably an electromagnetic coil, and in a variation, a combination of the electromagnetic coil and the permanent magnet is used, so that the magnetic field effect can be effectively increased, the deformation amount of the magnetostrictive body 15 can be increased, and the detection sensitivity can be improved.
It should be noted that, when the sensor 3 in the present invention is installed on the structural member 5, it is preferably installed at the bottom of the structural member 5 and at the same height with the bottom of the structural member 5, so as to avoid the displacement of the sensor 3 caused by the deformation of the structural member 5 itself, thereby affecting the accuracy of the detection structure of the present invention, in a variation, the sensor 3 is not connected with the structural member 5, and the structural member 5 is fixed by other components.
It should be noted that the deformation of the structural member 5 in the present invention may be generated only by the weight of the load 4 itself, or may be generated by the combined action of the self weight and the self movement of the load 4. And simultaneously, the utility model discloses not only be applicable to structure 5 because the heavy load produces the scene of deformation, for example load 4's weight is at the ton level, can also realize the detection of 5 deformation of little weight structure through the enlarged measure of adopting small deformation, enlarged measure is including adopting lever etc., little weight, for example load 4's weight is being less than 1 ton's scene, from this visible, the utility model discloses the range of application is extensive, can be applicable to more application scenes.
Example 2:
this embodiment is a preferred embodiment of embodiment 1.
In this embodiment, the first magnetic field 2 is installed at the end of the transmission body 1 and is arranged at a gap with the sensor 3, as shown in fig. 1, when a load 4 is additionally installed on the structural member 5 and a different loading force is generated on the structural member 5, the structural member 5 can be deformed differently, and further, the distance between the first magnetic field 2 and the magnetostrictive body 15 on the sensor 3 is changed, so that the magnetic field strength around the magnetostrictive body 15 is changed, the length of the magnetostrictive body 15 itself is changed, and further, the degree of extrusion of the piezoelectric body 16 is changed, so that the piezoelectric body 16 generates a changed electric signal, and the deformation of the structural member 5 is detected by detecting the changed electric signal, which is simple in structure in this embodiment.
Example 3:
this embodiment is another preferable embodiment of embodiment 1.
In this embodiment, as shown in fig. 2, the coupling lever 6 and the support 7 are included, one end of the coupling lever 6 is movably engaged with the other end of the transmission body 1, the other end of the coupling lever 6 is provided with the first magnetic field body 2, the first magnetic field body 2 is arranged with a gap with the sensor 3, the support 7 is movably engaged with a support point provided on the coupling lever 6, the coupling lever 6 is a first force arm at a side of the support point facing the transmission body 1, the coupling lever 6 is a second force arm at a side of the support point facing the first magnetic field body 2, wherein the second force arm is larger than the first force arm, so that the coupling lever 6 forms a lever with the support point as a fulcrum when the transmission body 1 moves upwards or downwards, and since the second force arm is larger than the first force arm, when the transmission body 1 moves upwards or downwards by a small displacement, the first magnetic field body 2 generates a relatively large displacement upwards or downwards, so that the variation range of the magnetic field intensity around the sensor 3 can be enlarged, the variation range of the extruded degree of the piezoelectric body 16 can be enlarged, the detection sensitivity is greatly increased, and the accurate output of a detection result is facilitated.
Further, the support member 7 is preferably made of a piezoelectric material, and the support member 7 can generate a correspondingly changed force in the rotation process of the connecting lever 6, so that a correspondingly changed electric signal can be output, and the detection of the deformation of the structural member 5 or the comparison and verification of the detection result of the piezoelectric body 16 can be realized. In one variant, the support 7 is made of piezoelectric material and magnetostrictive material, and in another variant, the support 7 is made of magnetostrictive material.
Example 4:
this embodiment is still another preferable embodiment of embodiment 1.
In this embodiment, as shown in fig. 3, a containing body 8 is disposed in the structural member 5, a membrane 9 is disposed at one end of the containing body 8, the membrane 9 is a metal membrane or a non-metal membrane, for example, a plastic membrane, and further for example, a nylon membrane, a first containing chamber 10 and a second containing chamber 11 are sequentially disposed in the containing body 8 along a direction from one end to the other end, and a cross-sectional area of the first containing chamber 10 is larger than a cross-sectional area of the second containing chamber 11. The second accommodating chamber 11 is provided with a piston member 12, the piston member 12 divides the second accommodating chamber 11 into a first accommodating space 19 and a second accommodating space 20, the second accommodating space 20 is communicated with the outside through a vent hole 13 formed in the other end of the accommodating body 8, and the vent hole 13 is communicated with the outside, so that the piston member 12 can reciprocate without influencing the detection accuracy due to air resistance.
One end of the piston member 12 is connected to the inner wall of the accommodating body 8 through an elastic body 14 arranged in the second accommodating space 20, the elastic body 14 is preferably a spring, and the other end of the piston member 12 is connected to a first magnetic field body 2, wherein the first magnetic field body 2 is in clearance connection with the sensor 3 installed in the first accommodating chamber 10;
the other end of transmission body 1 is connected to diaphragm 9, fluid is filled in first accommodating chamber 10 and first accommodating space 19, when transmission body 1 moves towards diaphragm 9 due to deformation of structural member 5, diaphragm 9 deforms concavely to push fluid to move towards first accommodating space 19 so as to make piston member 12 drive first magnetic field body 2 to move away from sensor 3, because the cross-sectional area of first accommodating chamber 10 is larger than that of second accommodating chamber 11, both first accommodating chamber 10 and second accommodating chamber 11 preferably adopt cylindrical structures, therefore when fluid in first accommodating chamber 10 is pressed into second accommodating chamber 11 when diaphragm 9 deforms slightly, piston member 12 is driven to drive first magnetic field body 2 to generate a larger displacement, as shown in fig. 3, S1 is the concave displacement generated after diaphragm 9 is stressed, s2 is the downward displacement produced by magnetic field 2, S2 > S1, and the ratio of the displacements can be achieved by adjusting the ratio of the cross-sectional area of first containment chamber 10 to the cross-sectional area of second containment chamber 11. Further, the variation range of the magnetic field intensity around the sensor 3 is increased, so that the variation range of the degree of squeezing the piezoelectric body 16 can be increased, the detection sensitivity is greatly increased, and the accurate output of the detection result is facilitated.
In this embodiment, in order to make the distance between the magnetic body 2 and the sensor 3 more suitable for the detection requirement, the other end of the piston member 12 is connected to the magnetic body 2 through the connecting rod 18, and the magnetic body 2 can be installed at a certain position of the connecting rod 18 according to the actual detection requirement, so as to meet the requirement of the installation scenario.
The utility model discloses a further improvement helps realizing a loading structure deformation measuring method, including following step:
s1: after the load 4 is added on the structural part 5, the structural part 5 per se is deformed or strained;
s2: the deformation or strain produces a displacement of a first magnetic field body 2 mounted on the transmission body 1;
s3: and through the displacement, the sensor 3 arranged at an interval with the first magnetic field body 2 generates an electric signal or a magnetic signal which changes correspondingly to the deformation or strain.
The utility model discloses well detection deformation or meet an emergency not only can realize the measurement of the change of the signal of telecommunication through the piezoelectric material structure that sets up, can also obtain meeting an emergency or the detection of deformation volume through the mode that sets up Hall element and detect the magnetic signal change.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (10)
1. A loaded structure deformation measuring device, characterized by comprising:
a transmission body (1) connected to a load (4), said load (4) being mounted on a structure (5);
a first magnetic field (2), the deformation of the structure (5) enabling the movement of the first magnetic field (2);
a sensor (3) arranged at a distance from the first magnetic field body (2).
2. The deformation measuring device of loading structure according to claim 1, wherein the first magnetic field body (2) adopts any one of the following connection structures:
-said first magnetic field body (2) is mounted at the end of said transmission body (1) and arranged at a gap from said sensor (3);
-further comprising a connecting lever (6) and a support (7), one end of the connecting lever (6) is movably fitted with the other end of the transmission body (1), the other end of the connecting lever (6) is provided with the first magnetic field body (2), the first magnetic field body (2) is arranged with a gap from the sensor (3), the support (7) is movably fitted with a support point provided on the connecting lever (6), the connecting lever (6) is provided with a first moment arm at the support point side facing the transmission body (1), the connecting lever (6) is provided with a second moment arm at the support point side facing the first magnetic field body (2), wherein the second moment arm is larger than the first moment arm;
-a containing body (8) is arranged in the structural part (5), a diaphragm (9) is arranged at one end of the containing body (8), a first containing chamber (10) and a second containing chamber (11) are sequentially arranged in the containing body (8) from one end to the other end, a piston member (12) is arranged in the second containing chamber (11), the piston member (12) divides the second containing chamber (11) into a first containing space (19) and a second containing space (20), and the second containing space (20) is communicated with the outside through a vent hole (13) arranged at the other end of the containing body (8);
one end of the piston member (12) is connected with the inner wall of the accommodating body (8) through an elastic body (14) arranged in the second accommodating space (20), and the other end of the piston member (12) is connected with a first magnetic field body (2), wherein the first magnetic field body (2) is in clearance connection with a sensor (3) installed in the first accommodating chamber (10);
the other end of the transmission body (1) is connected with the diaphragm (9), the first accommodating chamber (10) and the first accommodating space (19) are filled with fluid, and when the transmission body (1) moves towards the diaphragm (9), the diaphragm (9) pushes the fluid to move towards the first accommodating space (19) so that the piston piece (12) drives the first magnetic field body (2) to move away from the sensor (3).
3. The loaded structure deformation measuring device according to claim 2, characterized in that the cross-sectional area of the first containing chamber (10) is greater than the cross-sectional area of the second containing chamber (11).
4. The device for measuring the deformation of a loaded structure according to claim 2, characterized in that said support (7) is made of piezoelectric and/or magnetostrictive material.
5. The deformation measuring device of claim 2, wherein the other end of the piston member (12) is connected to the magnetic field body (2) via a connecting rod (18).
6. The deformation measuring device of loading structure according to claim 2, characterized in that the membrane (9) is a metal or non-metal membrane.
7. The deformation measuring device of the loading structure according to claim 1, wherein the first magnetic field body (2) is a permanent magnet or an electromagnet.
8. The loading structure deformation measuring device according to claim 1, wherein the sensor (3) comprises a sensor housing, a magnetostrictive body (15) and a piezoelectric body (16);
the magnetostrictive body (15) and the piezoelectric body (16) are sequentially arranged in the sensor shell.
9. The deformation measuring device of the loading structure according to claim 8, wherein a second magnetic field body (17) is arranged on the periphery of the magnetostrictive body (15).
10. The deformation measuring device of the loading structure according to claim 9, wherein the second magnetic field body (17) is an electromagnet or a combination of a permanent magnet and an electromagnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023036991.9U CN214250863U (en) | 2020-12-16 | 2020-12-16 | Deformation measuring device for loading structural part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023036991.9U CN214250863U (en) | 2020-12-16 | 2020-12-16 | Deformation measuring device for loading structural part |
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| Publication Number | Publication Date |
|---|---|
| CN214250863U true CN214250863U (en) | 2021-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202023036991.9U Active CN214250863U (en) | 2020-12-16 | 2020-12-16 | Deformation measuring device for loading structural part |
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| CN (1) | CN214250863U (en) |
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