Tool applied to triangular shearing piezoelectric vibration sensor assembly

Abstract

The invention provides a tool for a piezoelectric vibration sensor assembly applied to triangular shearing, and the tool comprises a first limiting assembly which is used for limiting a pedestal of a piezoelectric vibration sensor and is fixedly connected with the pedestal; the second limiting assembly is connected with the first limiting assembly and is used for limiting an insulating sheet, a sensitive element, a mass block, a first electrode sheet and a second electrode sheet of the piezoelectric vibration sensor in the left-right, front-back and bottom directions; and the third limiting assembly is connected with the base of the piezoelectric vibration sensor and is used for carrying out top surface limiting on the insulating sheet, the sensitive element, the mass block, the first electrode sheet and the second electrode sheet of the piezoelectric vibration sensor. The technical problem of sensitive element dislocation caused by dislocation of the sensitive element and other materials in the shrinkage process of the thermal shrinkage ring of the triangular shearing piezoelectric vibration sensor assembly can be solved.

Description

Technical Field

[0001] This application relates to the field of piezoelectric vibration sensors, and more particularly, to a tooling for a piezoelectric vibration sensor assembly applied to triangular shear. Background Art

[0002] A piezoelectric vibration sensor is a sensor based on the piezoelectric effect. Its sensitive element is made of piezoelectric material. When the piezoelectric material is stressed, charges are generated on its surface and converted into voltage signals through an in-line charge amplifier. It has the advantages of a wide frequency band, high sensitivity, high signal-to-noise ratio, and reliable operation, and is widely used in vibration health monitoring in fields such as aviation, ships, rail transit, and wind power generation.

[0003] However, for the existing tooling, during the process of the heat-shrinkable ring shrinking due to heat, since there is no tooling to limit the piezoelectric vibration sensor assembly, the sensitive element will be misaligned with other materials of the assembly. Due to the low material strength of the sensitive element, the misaligned sensitive element will crack or even fall off under the influence of stress. Summary of the Invention

[0004] The purpose of the embodiments of this application is to provide a tooling for a piezoelectric vibration sensor assembly applied to triangular shear, so as to solve the technical problem of misalignment of the sensitive element caused by the misalignment of the sensitive element and other materials during the shrinkage process of the heat-shrinkable ring of the piezoelectric vibration sensor assembly for triangular shear.

[0005] In a first aspect, the present invention provides a tooling for a piezoelectric vibration sensor assembly applied to triangular shear, the tooling including:

[0006] A first limiting component, used to limit the base of the piezoelectric vibration sensor and fixedly connected to the base;

[0007] A second limiting component, connected to the first limiting component, used to limit the insulating sheet, sensitive element, mass block, first electrode sheet, and second electrode sheet of the piezoelectric vibration sensor in the left-right, front-back, and bottom directions;

[0008] A third limiting component, connected to the base of the piezoelectric vibration sensor, used to perform top surface limitation on the insulating sheet, sensitive element, mass block, first electrode sheet, and second electrode sheet of the piezoelectric vibration sensor.

[0009] The tooling of the present application can limit the base of the piezoelectric vibration sensor through the first limiting component, thereby avoiding the misalignment of the sensitive element caused by the movement of the base of the piezoelectric vibration sensor and reducing the probability of misalignment of the sensitive element. Further, through the second limiting component, on the basis of fixing the base, the insulating sheet, sensitive element, mass block, first electrode sheet and second electrode sheet of the piezoelectric vibration sensor can be limited in the left-right, front-back and bottom directions, thereby further reducing the probability of misalignment of the sensitive element. Further, through the third limiting component, the top surface of the insulating sheet, sensitive element, mass block, first electrode sheet and second electrode sheet of the piezoelectric vibration sensor can be limited, thereby further reducing the probability of misalignment of the sensitive element.

[0010] In an alternative embodiment, the first limiting component includes a disc base, a pressing plate and a first bolt;

[0011] The disc base is provided with a first mounting hole and a second mounting hole. Among them, the first mounting hole is used for mounting the base and limiting the base. The disc base and the pressing plate are fixedly connected to the base through the cooperation of the second mounting hole and the first bolt.

[0012] This alternative embodiment can mount the base through the first mounting hole and limit the base. On the other hand, the disc base, the pressing plate and the base can be fixed through the cooperation of the second mounting hole and the first bolt.

[0013] In an alternative embodiment, the second limiting component includes a slider;

[0014] The slider includes a first arc surface, a second arc surface and a groove. Among them, the first arc surface and the second arc surface are arranged in a staggered manner in the front-back and up-down directions to form a first boss;

[0015] The slider is slidably connected to the disc base. Among them, when the first arc surface abuts against the heat shrinkable ring and the bottom of the heat shrinkable ring abuts against the first boss, the slider is locked with the disc base;

[0016] The groove and the second arc surface form a positioning area for limiting the insulating sheet, sensitive element, mass block, first electrode sheet and second electrode sheet of the piezoelectric vibration sensor in the left-right, front-back and bottom directions.

[0017] This alternative embodiment can position the heat shrinkable ring through the first arc surface and limit the insulating sheet, sensitive element, mass block, first electrode sheet and second electrode sheet of the piezoelectric vibration sensor in the left-right, front-back and bottom directions through the second arc surface and the groove arranged in a staggered manner.

[0018] In an alternative embodiment, three uniformly distributed sliding grooves are provided on the front surface of the disc base, wherein the sliding grooves are perpendicular to the side surface of the base, and through the sliding grooves, the slider is slidably connected to the disc base.

[0019] In this alternative embodiment, through the sliding groove, the slider can be slidably connected to the disc base.

[0020] In an alternative embodiment, the second limiting component further includes a second bolt;

[0021] The slider is locked to the disc base by the second bolt.

[0022] This alternative embodiment can use the second bolt to lock the slider to the disc base.

[0023] In an alternative embodiment, the number of the second bolts is six, and each slider is locked by two of the second bolts.

[0024] This alternative embodiment can lock the three sliders respectively by three groups of second bolts.

[0025] In an alternative embodiment, the third limiting component includes a pressing block, wherein the pressing block is arranged above the base, and the pressing block is used to limit the top surfaces of the insulating sheet, the sensitive element, the mass block, the first electrode sheet and the second electrode sheet of the piezoelectric vibration sensor based on its own weight.

[0026] This alternative embodiment can limit the top surfaces of the insulating sheet, the sensitive element, the mass block, the first electrode sheet and the second electrode sheet of the piezoelectric vibration sensor based on its own weight.

[0027] In an alternative embodiment, the pressing block is provided with three second bosses, the second bosses are perpendicular to the side surface of the base, and are located between two third bosses of the first electrode sheet.

[0028] This alternative embodiment can make the second bosses perpendicular to the side surface of the base and located between two third bosses of the first electrode sheet.

[0029] In an alternative embodiment, the inner side surfaces of the three second bosses are respectively in contact with the three side surfaces of the base.

[0030] This alternative embodiment can prevent the second bosses from rotating. Description of the Drawings

[0031] To more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required to be used in the embodiments of the present application. It should be understood that the following drawings only show certain embodiments of the present application, and therefore should not be regarded as a limitation of the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0032] Figure 1 It is a schematic diagram of a piezoelectric vibration sensor assembly with triangular shearing disclosed in an embodiment of the present application;

[0033] Figure 2 is Figure 1 the top view of;

[0034] Figure 3 It is an assembly schematic diagram of a tooling and a piezoelectric vibration sensor assembly disclosed in an embodiment of the present application;

[0035] Figure 4 It is a schematic diagram of the structure of a disc base disclosed in an embodiment of the present application;

[0036] Figure 5 is Figure 4 the sectional view of;

[0037] Figure 6 It is a schematic diagram of the structure of a pressing plate disclosed in an embodiment of the present application;

[0038] Figure 7 is Figure 6 the sectional view of;

[0039] Figure 8 It is a schematic diagram of the structure of a first bolt disclosed in an embodiment of the present application;

[0040] Figure 9 It is a schematic diagram of the structure of a slider disclosed in an embodiment of the present application;

[0041] Figure 10 It is a schematic diagram of the structure of a second bolt disclosed in an embodiment of the present application;

[0042] Figure 11 It is a schematic diagram of the structure of a pressing block disclosed in an embodiment of the present application.

[0043] Icon: 1 - Base; 2 - Insulating sheet; 3 - Sensing element; 4 - Mass block; 5 - Heat shrinkable ring; 6 - First electrode plate; 7 - Second electrode plate; 8 - Pressing block; 9 - First bolt; 10 - Disc base; 11 - Slide block; 12 - Second bolt; 13 - Pressing plate; 1001 - First mounting hole; 1002 - Second mounting hole; 1301 - Central through hole of the pressing plate; 1302 - Mounting hole of the pressing plate; 1101 - First arc surface; 1102 - Second arc surface; 1103 - Groove; 801 - Second boss. Detailed implementation

[0044] The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application.

[0045] Before introducing the tooling of the present application, please refer to Figure 1 and Figure 2 , where Figure 1 is a schematic diagram of a triangular shear piezoelectric vibration sensor assembly disclosed in the embodiments of the present application, Figure 2 is Figure 1 's top view. As Figure 1 and Figure 2 shown, the triangular shear piezoelectric vibration sensor assembly includes a base 1, an insulating sheet 2, a sensing element 3, a mass block 4, a heat shrinkable ring 5, a first electrode plate 6 and a second electrode plate 7, where the base 1 is triangular. In addition, the triangular shear piezoelectric vibration sensor assembly also includes fixing holes distributed in a triangle, through which the piezoelectric vibration sensor assembly is integrally connected to the disc base 10.

[0046] The base 1, insulating sheet 2, sensing element 3, mass block 4, first electrode plate 6 and second electrode plate 7 in the above piezoelectric vibration sensor assembly need to be tightly fixed by the heat shrinkable ring 5, that is, fixed by heat shrinkage when heated. However, during the heat shrinkage process of the heat shrinkable ring 5, if the base 1, insulating sheet 2, sensing element 3, mass block 4, first electrode plate 6 and second electrode plate 7 are not limited, the sensing element 3 will be misaligned with other materials of the assembly. Furthermore, due to the low material strength of the sensing element 3, the misaligned sensing element 3 will crack or even fall off under the influence of stress.

[0047] Based on this, the embodiments of the present application disclose a tooling applied to a triangular shear piezoelectric vibration sensor assembly, where the tooling includes:

[0048] A first limiting component, used to limit the base 1 of the piezoelectric vibration sensor and fixedly connected to the base 1;

[0049] The second limiting component, connected to the first limiting component, is used to limit the insulating sheet 2, the sensitive element 3, the mass block 4, the first electrode sheet 6, and the second electrode sheet 7 of the piezoelectric vibration sensor in the left-right, front-back, and bottom directions;

[0050] The third limiting component, connected to the base 1 of the piezoelectric vibration sensor, is used to perform top surface limiting on the insulating sheet 2, the sensitive element 3, the mass block 4, the first electrode sheet 6, and the second electrode sheet 7 of the piezoelectric vibration sensor.

[0051] The tooling in the embodiment of the present application can limit the base 1 of the piezoelectric vibration sensor through the first limiting component, thereby avoiding the misalignment of the sensitive element 3 caused by the movement of the base 1 of the piezoelectric vibration sensor and reducing the probability of misalignment of the sensitive element 3. Further, through the second limiting component, on the basis of the fixed base 1, the insulating sheet 2, the sensitive element 3, the mass block 4, the first electrode sheet 6, and the second electrode sheet 7 of the piezoelectric vibration sensor can be limited in the left-right, front-back, and bottom directions, thereby further reducing the probability of misalignment of the sensitive element 3. Further, through the third limiting component, the insulating sheet 2, the sensitive element 3, the mass block 4, the first electrode sheet 6, and the second electrode sheet 7 of the piezoelectric vibration sensor can be subjected to top surface limiting, thereby further reducing the probability of misalignment of the sensitive element 3. Finally, it reduces the phenomenon that the sensitive element 3 cracks or even falls off under the influence of stress.

[0052] In the embodiment of the present application, as an alternative implementation, please refer to Figure 3 , Figure 3 which is an assembly schematic diagram of a tooling and a piezoelectric vibration sensor assembly disclosed in the embodiment of the present application. As shown in Figure 3 , the first limiting component includes a disc base 10, a pressing plate 13, and a first bolt 9.

[0053] Further, please refer to Figure 4 、 Figure 5 , Figure 4 which is a structural schematic diagram of a disc base disclosed in the embodiment of the present application, Figure 5 is Figure 4 's cross-sectional view. As shown in Figure 4 、 Figure 5 , the disc base 10 is provided with a first mounting hole 1001 and a second mounting hole 1002. The first mounting hole is used to mount the base 1 and limit the base 1. Specifically, the shape of the first mounting hole is adapted to the shape of the base 1, so that the base can be sleeved into the first mounting hole, and then the phase of the first mounting hole is determined.

[0054] Further, the disc base 10 and the pressing plate 13 are fixedly connected to the base 1 through the cooperation of the second mounting holes and the first bolts 9. Specifically, please refer to Figure 6 、 Figure 7 , Figure 6 which is a schematic structural view of a pressing plate disclosed in an embodiment of the present application, Figure 7 and Figure 6 is a cross-sectional view of Figure 6 、 Figure 7 . As shown in Figure 6 、 Figure 7 , the mounting holes on the pressing plate 13 cooperate with the second mounting holes, that is, the first bolt passes through the second mounting hole and the mounting hole 1302 of the pressing plate, thereby fixedly connecting the pressing plate 13, the disc base 10 and the base 1. Among them, the pressing plate is also provided with a central through hole 1301 sleeving the base. Therefore, this optional embodiment can install the base 1 through the first mounting hole and limit the base 1. On the other hand, through the cooperation of the second mounting hole and the first bolt 9, the disc base 10, the pressing plate 13 and the base 1 can be fixed.

[0055] Further, the structure of the first bolt 9 is as shown in Figure 8 , Figure 8 which is a schematic structural view of a first bolt disclosed in an embodiment of the present application.

[0056] In an embodiment of the present application, as an optional embodiment, as shown in Figure 3 , the second limiting component includes a slider 11. Specifically, please refer to Figure 9 , Figure 9 which is a schematic structural view of a slider disclosed in an embodiment of the present application. As shown in Figure 9 , the slider 11 includes a first arc surface 1101, a second arc surface 1102 and a groove 1103. Among them, the first arc surface and the second arc surface are vertically and horizontally offset from each other to form a first boss;

[0057] The slider 11 is slidably connected to the disc base 10. Among them, when the first arc surface abuts against the heat shrinkable ring 5 and the bottom of the heat shrinkable ring 5 abuts against the first boss, the slider 11 is locked with the disc base 10;

[0058] The groove and the second arc surface form a positioning area for limiting the insulating sheet 2, the sensitive element 3, the mass block 4, the first electrode sheet 6 and the second electrode sheet 7 of the piezoelectric vibration sensor in the left-right, front-back and bottom directions.

[0059] In this alternative embodiment, the heat shrinkable ring 5 can be positioned by the first arc surface, and the insulating sheet 2, the sensitive element 3, the mass block 4, the first electrode sheet 6, and the second electrode sheet 7 of the piezoelectric vibration sensor are limited in the left-right, front-back, and bottom directions by the second arc surface and the groove arranged in a staggered manner.

[0060] In an embodiment of the present application, as an alternative embodiment, three uniformly distributed sliding grooves are provided on the front surface of the disc base 1. Among them, the sliding grooves are perpendicular to the side surface of the base 1, and through the sliding grooves, the slider 11 is slidably connected to the disc base 10.

[0061] In this alternative embodiment, through the sliding groove, the slider 11 can be slidably connected to the disc base 10.

[0062] In an embodiment of the present application, in an alternative embodiment, the second limiting component further includes a second bolt 12, and the slider 11 is locked to the disc base 1 by the second bolt 12. It should be noted that for the second bolt, please refer to Figure 10 , Figure 10 which is a schematic structural diagram of a second bolt disclosed in an embodiment of the present application. In this alternative embodiment, the slider 11 can be locked to the disc base 1 by using the second bolt 12.

[0063] In an embodiment of the present application, as an alternative embodiment, the number of the second bolts 12 is 6. Among them, each slider 11 is locked by 2 of the second bolts 12. In this alternative embodiment, three groups of second bolts 12 can be used to lock the three sliders 11 respectively.

[0064] In an embodiment of the present application, as an alternative embodiment, as Figure 3 shown, the third limiting component includes a pressing block 8. Among them, the pressing block 8 is arranged above the base 1, and the pressing block 8 is used to limit the top surfaces of the insulating sheet 2, the sensitive element 3, the mass block 4, the first electrode sheet 6, and the second electrode sheet 7 of the piezoelectric vibration sensor based on its own weight.

[0065] In this alternative embodiment, the top surfaces of the insulating sheet 2, the sensitive element 3, the mass block 4, the first electrode sheet 6, and the second electrode sheet 7 of the piezoelectric vibration sensor can be limited based on its own weight.

[0066] In an embodiment of the present application, as an alternative embodiment, please refer to Figure 11 , Figure 11 which is a schematic structural diagram of a pressing block disclosed in an embodiment of the present application. As Figure 11As shown, the pressing block 8 is provided with three second bosses 801. The second bosses are perpendicular to the side surface of the base 1 and are located between the two third bosses of the first electrode sheet 6. This optional embodiment can make the second bosses perpendicular to the side surface of the base 1 and located between the two third bosses of the first electrode sheet 6.

[0067] In an embodiment of the present application, as an optional embodiment, the inner side surfaces of the three second bosses are respectively in surface contact with the three side surfaces of the base 1. This optional embodiment can prevent the second bosses from rotating.

[0068] Regarding the embodiment of the present application, as an example, during assembly:

[0069] Install the heat shrinkable ring of the sensor assembly on the tooling, where the outer circle of the heat shrinkable ring is in contact with the arc of the slider, and the bottom surface of the heat shrinkable ring is in contact with the step surface of the slider.

[0070] Then, install 3 mass blocks, 3 sensitive elements, 3 insulating sheets, and 3 second electrode sheets in the grooves of the three sliders respectively, and install 1 electrode on the three sliders.

[0071] Then, place the pressing block on the base of the sensor assembly. The inner side surfaces of the three bosses of the pressing block are in contact with the three sides of the triangle of the base to ensure that the pressing block does not rotate. By the weight of the pressing block itself, the mass block, sensitive element, insulating sheet, second electrode sheet, and first electrode sheet of the sensor assembly are fixed on the surface of the slider.

[0072] Then, the sensor assembly shrinks the heat shrinkable ring through high temperature, thereby tightly holding the sensitive element, etc. The tooling composed of the pressing plate, disc base, slider, pressing block, etc. restricts the six directions of the sensor assembly. During the heat shrinkage process, it ensures that the parts of the sensor assembly do not shift.

[0073] Correspondingly, after the heat shrinkage of the sensor assembly is completed, remove the pressing block, remove the 6 second bolts on the slider, remove the 3 sliders, then remove the 3 first bolts, and take out the sensor assembly.

[0074] In this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

[0075] The above description is only for the embodiments of the present application and is not used to limit the protection scope of the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A tooling for a piezoelectric vibration sensor assembly for triangular shearing, characterized in that: The tooling includes: A first limiting component, used for limiting the base of the piezoelectric vibration sensor and fixedly connected to the base; A second limiting component, connected to the first limiting component, used for limiting the insulating sheet, the sensitive element, the mass block, the first electrode sheet and the second electrode sheet of the piezoelectric vibration sensor in the left-right, front-back and bottom directions; The third limiting component is connected to the base of the piezoelectric vibration sensor and is used to limit the top surface of the insulating sheet, the sensitive element, the mass block, the first electrode sheet and the second electrode sheet of the piezoelectric vibration sensor.

2. The tooling according to claim 1, characterized in that: The first limiting assembly includes a disc base, a pressure plate and a first bolt; The disc base is provided with a first mounting hole and a second mounting hole, wherein the first mounting hole is used to mount the base and limit the base, and the disc base and the pressure plate are fixedly connected to the base through the cooperation of the second mounting hole and the first bolt.

3. The tooling as claimed in claim 2, characterized in that: The second limiting component includes a slider; The slider comprises a first arc surface, a second arc surface and a groove, wherein the first arc surface and the second arc surface are staggered in front and back and up and down to form a first boss; The slider is slidably connected to the disc base, wherein when the first arc surface abuts against the heat shrink ring, and the bottom of the heat shrink ring abuts against the first boss, the slider is locked with the disc base; The groove and the second arc surface form a positioning area for limiting the insulating sheet, the sensitive element, the mass block, the first electrode sheet and the second electrode sheet of the piezoelectric vibration sensor in the left-right, front-back and bottom directions.

4. The tooling as claimed in claim 3, characterized in that: The front of the disc base is provided with three evenly distributed slide grooves, wherein the slide grooves are perpendicular to the side surfaces of the base, and the slider is slidably connected to the disc base through the slide grooves.

5. The tooling as claimed in claim 3, characterized in that: The second limiting assembly also includes a second bolt; The sliding block is locked with the disc base through the second bolt.

6. The tooling as claimed in claim 5, characterized in that: The number of the second bolts is 6, wherein each slider is locked using 2 of the second bolts.

7. The tooling according to claim 1, characterized in that: The third limiting assembly includes a pressure block, wherein the pressure block is arranged above the base, and the pressure block is used to limit the top surfaces of the insulating sheet, the sensitive element, the mass block, the first electrode sheet and the second electrode sheet of the piezoelectric vibration sensor based on its own weight.

8. The tooling according to claim 7, characterized in that: The pressing block is provided with three second bosses, and the second bosses are perpendicular to the side surfaces of the base.

9. The tooling according to claim 8, characterized in that: The second boss is located between the two third bosses of the first electrode sheet.

10. The tooling according to claim 9, characterized in that: The inner side surfaces of the three second bosses are respectively in contact with the three side surfaces of the base.

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