Portable piezoelectric sensor pasting tool

Abstract

The utility model belongs to the field of structural health monitoring, and particularly relates to a portable piezoelectric sensor pasting tool. Comprising a vacuum air pump, an exhaust pipe, an air pressure gauge and a vacuum chuck. The vacuum air pump carries a brushless motor and is used for providing negative pressure; the first end of the exhaust pipe is connected with the vacuum air pump; the air pressure gauge is connected with the exhaust pipe and used for monitoring the air pressure state; the vacuum suction cup is connected with the second end of the exhaust pipe, the diameter of the vacuum suction cup is larger than that of the piezoelectric sensor, and during use, the vacuum suction cup covers the piezoelectric sensor and is used for providing pressure for the piezoelectric sensor. According to the application, the actual application field of the fatigue test is combined, the vacuum air pump is taken as the main body, the vacuum chuck is taken as the tail end to fix the piezoelectric sensor, the installation of the automatic visual pressure-constant piezoelectric sensor can be realized, the standardization, unification and convenience of the piezoelectric sensor pasting process are realized, the installation efficiency of the piezoelectric sensor can be improved, and the production cost is reduced. And data noise caused by installation is solved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of structural health monitoring, and particularly relates to a portable piezoelectric sensor sticking tool. BACKGROUND

[0002] Piezoelectric wave-based damage monitoring sensors are applied in the health monitoring of mechanical and aviation fields due to their high sensitivity, reliability and low cost. At present, the sensors used in the field of structural health monitoring are basically piezoelectric ceramic sensors (PZT) in the form of a circular pie. The PZT sensor is highly concerned due to its high energy conversion efficiency, convenient use and easy installation. The method for installing the sensor on the structure of an airplane for monitoring is to use 401 glue to stick it on the structure. The 401 glue is a high-strength, fast adhesive that can be used for high-speed bonding work of various materials. However, the 401 glue needs a curing time, and the standard for installing the piezoelectric sensor by each person is different because the force used by each person for curing the 401 glue is completely different, resulting in uneven quality of the installed sensors.

[0003] Therefore, it is desirable to have a technical solution to overcome or at least alleviate at least one of the above-mentioned defects of the prior art. CONTENT OF THE INVENTION

[0004] The purpose of the present application is to provide a portable piezoelectric sensor sticking tool to solve at least one of the problems of uneven force application, incorrect sensor sticking position and uneven sensor installation by different persons in the prior art.

[0005] The technical solution of the present application is:

[0006] A portable piezoelectric sensor sticking tool, comprising:

[0007] A vacuum air pump, which is equipped with a brushless motor and is used to provide negative pressure;

[0008] An air suction pipe, a first end of which is connected with the vacuum air pump;

[0009] An air pressure gauge, which is connected with the air suction pipe and is used to monitor the air pressure state;

[0010] A vacuum chuck, which is connected with a second end of the air suction pipe, has a diameter greater than that of the piezoelectric sensor, and is used to provide pressure for the piezoelectric sensor when covering the piezoelectric sensor.

[0011] In at least one embodiment of the present application, the vacuum air pump provides an air pressure of-85 Kpa.

[0012] In at least one embodiment of the present application, the air extraction pipe is a rubber hose.

[0013] In at least one embodiment of the present application, the air extraction pipe is a hard pipe.

[0014] In at least one embodiment of the present application, the second end of the air extraction pipe is provided with a pipe joint, and the pipe joint has a plurality of interfaces, and the plurality of vacuum suction cups are respectively connected with the corresponding interfaces.

[0015] In at least one embodiment of the present application, the plurality of interfaces on the pipe joint are arranged in the same row at equal intervals.

[0016] In at least one embodiment of the present application, the plurality of interfaces on the pipe joint are arranged in an array of multiple rows and multiple columns.

[0017] The utility model at least has the following beneficial technical effects:

[0018] The portable piezoelectric sensor sticking tool of the present application is convenient to carry, can provide a standard constant force for the sensor, and can be sustainable, and the piezoelectric sensor can be standardized and unified by providing a constant force. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a schematic diagram of the portable piezoelectric sensor sticking tool of one embodiment of the present application;

[0020] Figure 2 is a schematic diagram of the air pressure force of one embodiment of the present application;

[0021] Figure 3 is a schematic diagram of the vacuum suction cup of one embodiment of the present application;

[0022] Figure 4 is a schematic diagram of the assembly of the pipe joint and the vacuum suction cup of one embodiment of the present application.

[0023] Wherein:

[0024] 1-vacuum air pump; 2-air extraction pipe; 3-air pressure gauge; 4-vacuum suction cup; 5-pipe joint. DETAILED DESCRIPTION

[0025] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application. The embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0026] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this application.

[0027] The following is in conjunction with the appendix Figures 1 to 4 This application will be described in further detail.

[0028] This application provides a portable piezoelectric sensor bonding tool, including: a vacuum pump 1, an air extraction tube 2, an air pressure gauge 3, and a vacuum suction cup 4.

[0029] Specifically, such as Figure 1 As shown, the vacuum pump 1 is equipped with a brushless motor to provide stable negative pressure. The first end of the suction pipe 2 is connected to the vacuum pump 1, allowing gas to pass through, and is connected to the vacuum pump 1, the pressure gauge 3, and the vacuum suction cup 4. The pressure gauge 3 is connected to the suction pipe 2 to monitor the air pressure and determine its stability. The vacuum suction cup 4 is connected to the second end of the suction pipe 2. The diameter of the vacuum suction cup 4 is larger than the diameter of the piezoelectric sensor. In use, the vacuum suction cup 4 covers the piezoelectric sensor to provide pressure.

[0030] The portable piezoelectric sensor bonding tool of this application, such as Figure 3As shown, the vacuum chuck 4 is provided with a through hole communicated with the air exhaust pipe 2, and the vacuum air pump 1 can provide a gas pressure of-85Kpa. Since the diameter of the vacuum chuck 4 is larger than that of the piezoelectric sensor, the vacuum chuck 4 covers the piezoelectric sensor, so that the negative pressure is equivalent to the vacuum of the vacuum chuck 4, and the pressure of the external atmosphere can press the piezoelectric sensor on the test piece to be monitored for structure health. The vacuum chuck 4 is made of flexible material and can be flexibly deformed. In the embodiment, a plastic ring is arranged on the inside of the vacuum chuck 4 in the circumferential direction to support the vacuum chuck 4 and prevent excessive deformation of the vacuum chuck 4.

[0031] In the preferred embodiment of the present application, the air exhaust pipe 2 can be selected from a rubber hose or a hard pipe.

[0032] The portable piezoelectric sensor sticking tool of the present application can provide a continuous and stable suction force in a local space by the vacuum air pump 1, and then transmit the force to the piezoelectric sensor through the vacuum chuck 4 at the end of the air exhaust pipe 2, so as to achieve the effect of applying a constant force. The vacuum chuck 4 at the end of the air exhaust pipe 2 can also be designed to fix the sensor and prevent air leakage. If the rubber hose is replaced by a hard pipe, the tool can solve the problem that some parts of the aircraft cannot be manually installed due to complex structure or narrow space, completely eliminate the phenomenon of uneven installation of piezoelectric sensors due to different personnel, and solve the problem of reduced installation quality of piezoelectric sensors due to fatigue of workers caused by long-time installation.

[0033] In order to improve the installation efficiency of the piezoelectric sensor, in the preferred embodiment of the present application, a plurality of vacuum chucks 4 can be integrated through the design of the pipe joint 5, so that the tool can complete the simultaneous installation of a plurality of piezoelectric sensors. For example, Figure 4 As shown, in the embodiment, the second end of the air exhaust pipe 2 is provided with a pipe joint 5, the pipe joint 5 has a plurality of interfaces, and the plurality of vacuum chucks 4 are connected with the corresponding interfaces. Advantageously, the number and arrangement of the interfaces on the pipe joint 5 can be designed according to the actual installation scene of the piezoelectric sensor. For example, when the piezoelectric sensors are installed in a row-by-row manner, the plurality of interfaces on the pipe joint 5 are designed to be arranged at equal intervals in the same row. When the piezoelectric sensors are installed in an array arrangement, the plurality of interfaces on the pipe joint 5 are designed to be arranged in the form of a multi-row and multi-column array.

[0034] The portable piezoelectric sensor sticking tool of the present application, combined with the actual application site of fatigue test, takes the vacuum air pump 1 as the main body and the vacuum chuck 4 as the terminal for fixing the piezoelectric sensor, can realize the automatic and visual installation of the piezoelectric sensor with constant pressure, and realize the standardization, unification and convenience of the piezoelectric sensor sticking process, can improve the installation efficiency of the piezoelectric sensor and solve the problem of data noise caused by installation.

[0035] The portable piezoelectric sensor sticking tool of the present application has the following advantages compared with the current manual installation of piezoelectric sensor method:

[0036] 1) When installing the sensor, the force can be observed in real time through the flow air pressure gauge 3 to determine whether it is a constant value, thereby fundamentally solving the problem of data noise caused by the installation of the piezoelectric sensor.

[0037] 2) The tool can always apply a uniform direction and standard force to the piezoelectric sensor, thereby solving the problem of piezoelectric sensor position deviation caused by the inability to unify the force direction by hand.

[0038] 3) Convenient installation, replacing the rubber hose with a hard pipe can be installed in places where it is not easy to install by hand.

[0039] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A portable piezoelectric sensor bonding tool, characterized in that, include: A vacuum pump (1) equipped with a brushless motor for providing negative pressure; The first end of the air extraction pipe (2) is connected to the vacuum pump (1); A pressure gauge (3) is connected to the suction pipe (2) and is used to monitor the air pressure status. Vacuum suction cup (4) is connected to the second end of the suction pipe (2). The diameter of the vacuum suction cup (4) is larger than the diameter of the piezoelectric sensor. In use, the vacuum suction cup (4) covers the piezoelectric sensor to provide pressure to the piezoelectric sensor.

2. The portable piezoelectric sensor bonding tool according to claim 1, characterized in that, The vacuum pump (1) provides an air pressure of -85 kPa.

3. The portable piezoelectric sensor bonding tool according to claim 1, characterized in that, The air extraction pipe (2) is a rubber hose.

4. The portable piezoelectric sensor bonding tool according to claim 1, characterized in that, The extraction pipe (2) is a rigid pipe.

5. The portable piezoelectric sensor bonding tool according to claim 3 or 4, characterized in that, The second end of the suction pipe (2) is provided with a pipe connector (5), which has multiple interfaces, and the multiple vacuum suction cups (4) are respectively connected to the corresponding interfaces.

6. The portable piezoelectric sensor bonding tool according to claim 5, characterized in that, The multiple interfaces on the pipe fitting (5) are arranged at equal intervals in the same row.

7. The portable piezoelectric sensor bonding tool according to claim 5, characterized in that, The multiple interfaces on the pipe fitting (5) are arranged in a multi-row, multi-column array.

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