Semi-automatic strain gauge pasting device applied to semi-closed space environment

Abstract

The invention belongs to the technical field of structural stress analysis, and particularly relates to a semi-automatic strain gauge pasting device applied to a semi-closed space environment. The device comprises an operation positioning module which is used for integrated installation of each module and driving each module to be positioned to a to-be-pasted part of a test piece; the micro electronic camera display module is used for shooting and displaying the part to be subjected to surface mounting of the test piece; the electric polishing module is used for polishing the to-be-pasted part of the test piece; the cleaning module is used for cleaning the to-be-pasted part of the test piece; the gluing and pasting module is used for gluing and pasting the to-be-pasted part of the test piece; and the sucker module is used for being adsorbed on the surface of the test piece. According to the invention, semi-automatic control can be realized, and accurate pasting of strain gauges under the condition that part of work cannot be directly operated by workers in various complex environments is realized.

Description

Technical Field

[0001] The present application belongs to the technical field of structural stress analysis, and in particular relates to a semi-automatic strain gauge pasting device applied to a semi-enclosed space environment. Background Art

[0002] Strain electrical measurement is the most widely used method in the stress analysis technology of structure or component test. In the preparation stage before the test, the thin film resistance strain gauge needs to be manually pasted on the surface of the test piece. The operation process of pasting the strain gauge on the surface of the test piece is called patching. In the actual patching operation, the strain gauge is often not pasted correctly or the pasting quality is not high due to many factors, such as: the operating space is limited and the patching personnel cannot get close, the structure to be tested is tortuous and the arm cannot enter, the passage is narrow and the line of sight cannot reach the patching part, etc.

[0003] Therefore, it is desired to have a technical solution to overcome or at least alleviate at least one of the above-mentioned defects of the prior art. Summary of the invention

[0004] The purpose of the present application is to provide a semi-automatic strain gauge pasting device applied to a semi-enclosed space environment to solve at least one problem existing in the prior art.

[0005] The technical solution of this application is:

[0006] A semi-automatic strain gauge pasting device used in a semi-enclosed space environment, comprising:

[0007] An operation positioning module, the operation positioning module comprising a fixed positioning seat, a movable positioning seat and a micro motor, the micro motor is used to drive the movable positioning seat to move on the fixed positioning seat;

[0008] A micro electronic camera display module, the micro electronic camera display module comprising a micro electronic camera, a signal transmission line and a display, the micro electronic camera is mounted on the movable positioning seat, and the micro electronic camera is connected to a remote display through the signal transmission line;

[0009] An electric grinding module, the electric grinding module comprising an electric grinding head and a support frame, the electric grinding head being mounted on the movable positioning seat through the support frame;

[0010] A cleaning module, the cleaning module is mounted on the movable positioning seat, the cleaning module comprises a nozzle, a conduit and a liquid-filling injection tube, the nozzle is connected to the liquid-filling injection tube through the conduit;

[0011] A glue-coating patch module, which is mounted on the movable positioning seat and includes a position adjustment mechanism, a wire-drawing glue squeezing mechanism, and a wire-drawing pressing mechanism;

[0012] A suction cup module is installed on the fixed positioning seat. The suction cup module includes a suction cup, a hollow tube and a small vacuum pump. The suction cup is connected to the small vacuum pump through the hollow tube.

[0013] In at least one embodiment of the present application, the micro motor includes a lateral displacement micro motor and a longitudinal displacement micro motor.

[0014] In at least one embodiment of the present application, a sanding disc is installed on the electric sanding head.

[0015] In at least one embodiment of the present application, the liquid-filled injection tube is filled with a cleaning agent, and the cleaning agent is one of acetone, alcohol or ethyl acetate.

[0016] In at least one embodiment of the present application, a recovery groove is provided on the movable positioning seat, and when not in operation, the electric grinding module, the cleaning module and the glue coating patch module can be retracted into the recovery groove.

[0017] In at least one embodiment of the present application, the wire-pulling glue squeezing mechanism uses 502 glue for glue coating.

[0018] In at least one embodiment of the present application, the suction cup modules include at least three groups.

[0019] The invention has at least the following beneficial technical effects:

[0020] The semi-automatic strain gauge pasting device applied to a semi-enclosed space environment of the present application can successfully and accurately complete the strain gauge pasting in a difficult operating environment where the operating space is limited, the pasting personnel cannot get close, the measured structure is tortuous and the arms cannot enter, and the passage is narrow and the line of sight cannot reach the pasting part. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a diagram showing the structure of a semi-automatic strain gauge pasting device used in a semi-enclosed space environment according to an embodiment of the present application;

[0022] Figure 2 is a schematic diagram of an operation positioning module of an implementation mode of the present application;

[0023] Figure 3 This is a schematic diagram of a working state of a semi-automatic strain gauge pasting device applied to a semi-enclosed space environment according to an embodiment of the present application;

[0024] Figure 4This is another working state schematic diagram of a semi-automatic strain gauge pasting device applied to a semi-enclosed space environment according to an embodiment of the present application;

[0025] in,

[0026] 1-operation positioning module; 11-fixed positioning seat; 12-movable positioning seat; 13-lateral displacement micro motor; 14-longitudinal displacement micro motor; 2-micro electronic camera display module; 3-electric polishing module; 4-cleaning module; 5-glue patch module; 6-suction cup module. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the implementation of this application clearer, the technical scheme in the embodiment of this application will be described in more detail below in conjunction with the drawings in the embodiment of this application. In the drawings, the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The described embodiments are part of the embodiments of this application, not all of them. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain this application, and should not be construed as limitations on this application. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. The embodiments of this application are described in detail below in conjunction with the drawings.

[0028] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present application.

[0029] The following is combined with Figures 1 to 4 This application is described in further detail.

[0030] The present application provides a semi-automatic strain gauge pasting device for use in a semi-enclosed space environment, comprising: an operation positioning module 1, a micro-electronic camera display module 2, an electric polishing module 3, a cleaning module 4, a glue patch module 5 and a suction cup module 6.

[0031] Specifically, the operation positioning module 1 provides support for other working modules, and other working modules are installed on the operation positioning module 1. The operation positioning module 1 includes a fixed positioning seat 11, a movable positioning seat 12 and a micro motor. In the preferred embodiment of the present application, the micro motor includes a lateral displacement micro motor 13 and a longitudinal displacement micro motor 14. The movable positioning seat 12 can move longitudinally and transversely along the center of the fixed positioning seat 11 under the drive of the micro motor, and stop after reaching the correct position.

[0032] The micro-electronic camera display module 2 includes a micro-electronic camera, a signal transmission line and a display. The micro-electronic camera is installed on the movable positioning seat 12 of the operation positioning module 1. The video signal collected by the micro-electronic camera is transmitted to the remote display through the signal transmission line.

[0033] The electric grinding module 3 is an electric rotary grinding device, which includes an electric grinding head and a support frame. The electric grinding head is mounted on a movable positioning seat 12 through the support frame, and a sanding sheet is mounted on the electric grinding head. A recovery slot is provided on the movable positioning seat 12 of the operating positioning module 1. The electric grinding module 3 is extended when in use, manually started, and the sanding sheet fixed thereon is used to grind the test piece. After being stopped, it is retracted into the recovery slot to avoid spatial position conflicts with other subsequent working modules.

[0034] The cleaning module 4 is mounted on the movable positioning seat 12, and the cleaning module 4 includes a nozzle, a catheter and a liquid-filled injection tube, and the nozzle is connected to the liquid-filled injection tube through the catheter. In a preferred embodiment of the present application, the liquid-filled injection tube is filled with a cleaning agent, and the cleaning agent is one of acetone, alcohol or ethyl acetate. The cleaning module 4 is used to clean the part of the test piece to be patched. After the polishing of the patch position of the test piece is completed, the liquid-filled injection tube filled with the cleaning agent is manually pressurized, and the cleaning liquid is sprayed at the nozzle through the catheter, thereby achieving the cleaning of the patch part. Similarly, the cleaning module 4 is extended to the working position when in use, and is retracted to the recovery tank after being deactivated.

[0035] The glue-coated patch module 5 is installed on a movable positioning seat 12. The glue-coated patch module 5 includes a position adjustment mechanism, a pull-wire type glue squeezing mechanism and a pull-wire type pressing mechanism, which are used to apply glue to the part to be patched of the test piece. The position adjustment mechanism slightly moves the glue-coated patch module 5 as a whole to the correct position, manually pulls the pull wire of the pull-wire type glue squeezing mechanism to squeeze the patch adhesive (for example, 502 glue) to the part to be patched, releases the pull wire, and the pull-wire type glue squeezing mechanism returns to its original position. Manually pulls the pull wire of the pull-wire type pressing mechanism to stick the strain gauge to the part to be patched, and heats and pressurizes to cure the adhesive. The pull-wire pressing mechanism has pre-installed plastic film, strain gauge and electric heating element. The strain gauge is pre-bonded to the outer surface of the plastic film by removable glue to ensure that the strain gauge does not fall off during the movement of the glue-coated patch module. It can also be separated from the plastic film after the strain gauge adhesive is cured. The inner surface of the plastic film is in contact and fixed with the electric heating element. The strain gauge can be separated from the plastic film after the patch adhesive is pressurized and heated to cure.

[0036] The suction cup module 6 is installed on the fixed positioning seat 11, and at least three groups of suction cup modules 6 are set. Each suction cup is connected to a small vacuum pump through a hollow tube. The vacuum pump sucks out the air between the suction cup and the surface of the test piece to form a negative pressure space, which can realize the overall adsorption of the semi-automatic strain gauge pasting device on the surface of the test piece.

[0037] The semi-automatic strain gauge pasting device applied to a semi-enclosed space environment of the present application combines the micro-electronic camera display module 2, the electric grinding module 3, the cleaning module 4, the glue patch module 5 and the suction cup module 6 into one by operating the positioning module 1, and drives each module to be positioned to the part of the test piece to be pasted. The micro-electronic camera display module 2 is used to shoot and display the part of the test piece to be pasted, the electric grinding module 3 is used to grind the part of the test piece to be pasted, the cleaning module 4 is used to clean the part of the test piece to be pasted, the glue patch module 5 is used to apply glue to the part of the test piece to be pasted, and the suction cup module 6 is used to adsorb on the surface of the test piece. Finally, the integrated semi-automatic strain gauge pasting device pastes the strain gauge on the surface of the test piece.

[0038] In the preferred embodiment of the present application, the micro-electronic camera display module 2 can be used to observe and display the real situation of the part to be patched, so as to carry out the patching operation; the electric grinding module 3 has a sanding sheet installed on the grinding head, and the part to be patched of the test piece is polished by the sanding sheet; the cleaning module 4 cleans the part to be patched of the test piece by a cleaning agent such as acetone, alcohol or ethyl acetate; the glue patch module 5 applies glue to the part to be patched of the test piece by 502 glue; after the glue patching, the plastic film is covered on the strain gauge, and pressure is applied to the strain gauge. The suction cup of the suction cup module 6 is connected to the vacuum pump through a pipeline, and the suction cup module 6 is adsorbed on the surface of the test piece, and is fixed on the surface of the test piece through the suction cup module 6 together with other integrated semi-automatic strain gauge pasting devices; the operation positioning module 6 can integrate other modules into one, and position the semi-automatic strain gauge pasting device to the part to be patched of the test piece under manual remote operation.

[0039] The semi-automatic strain gauge pasting device applied to a semi-enclosed space environment of the present application, when in use, first, under manual remote operation, the semi-automatic strain gauge pasting device is positioned to the part of the test piece to be pasted by operating the positioning module 1; then the suction cup module 6 is adsorbed on the surface of the test piece to realize the positioning of the semi-automatic strain gauge pasting device and the test piece; after the semi-automatic strain gauge pasting device completes the positioning work, the micro-electronic camera display module 2 is turned on to shoot and display the strain gauge pasting process; the operator continues to remotely operate the electric grinding module 3 to grind the part of the test piece to be pasted to remove paint, grease, oxide scale, rust, etc., and grind the test piece The test piece forms a smooth surface, and the polished area is about 3 to 5 times that of the strain gauge. Then the cleaning module uses acetone, alcohol or ethyl acetate and other cleaning agents to clean the polished surface. After the cleaning agent evaporates, the next step of operation begins. Under manual operation, the strain gauge is attached to the test piece with 502 glue or other patch glue through the glue patch module 5. First, a thin layer of glue is applied to the strain gauge and the test piece patch. The strain gauge is attached to the test piece in the correct position, and a plastic film is used to pad the strain gauge. The soft glue pressing rod on the glue patch module 5 is used to apply pressure to the strain gauge to squeeze out excess glue, thereby attaching the strain gauge to the surface of the test piece.

[0040] The semi-automatic strain gauge pasting device applied to the semi-enclosed space environment of the present application can be semi-automatically controlled to achieve accurate pasting of strain gauges in various complex environments where some work cannot be directly operated by humans. It can be used in semi-enclosed space environments and can also be used in open spaces. It is suitable for strength testing of aircraft and other mechanical structures and has broad application prospects in the fields of aviation, aerospace, machinery, transportation, etc.

[0041] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A semi-automatic strain gauge pasting device used in a semi-enclosed space environment, characterized in that: include: An operating positioning module (1), the operating positioning module (1) comprising a fixed positioning seat (11), a movable positioning seat (12) and a micro motor, the micro motor being used to drive the movable positioning seat (12) to move on the fixed positioning seat (11); A micro electronic camera display module (2), the micro electronic camera display module (2) comprising a micro electronic camera, a signal transmission line and a display, the micro electronic camera being mounted on the movable positioning seat (12), and the micro electronic camera being connected to a remote display via the signal transmission line; An electric grinding module (3), the electric grinding module (3) comprising an electric grinding head and a support frame, the electric grinding head being mounted on the movable positioning seat (12) via the support frame; A cleaning module (4), the cleaning module (4) being mounted on the movable positioning seat (12), the cleaning module (4) comprising a nozzle, a conduit and a liquid filling injection tube, the nozzle being connected to the liquid filling injection tube via the conduit; A glue-coating patch module (5), the glue-coating patch module (5) being mounted on the movable positioning seat (12), the glue-coating patch module (5) comprising a position adjustment mechanism, a wire-drawing glue squeezing mechanism and a wire-drawing pressing mechanism; A suction cup module (6), wherein the suction cup module (6) is mounted on the fixed positioning seat (11), and the suction cup module (6) comprises a suction cup, a hollow tube and a small vacuum pump, and the suction cup is connected to the small vacuum pump via the hollow tube.

2. The semi-automatic strain gauge pasting device for use in a semi-enclosed space environment according to claim 1 is characterized in that: The micro motor comprises a transverse displacement micro motor (13) and a longitudinal displacement micro motor (14).

3. The semi-automatic strain gauge pasting device for use in a semi-enclosed space environment according to claim 1 is characterized in that: A sanding sheet is installed on the electric grinding head.

4. The semi-automatic strain gauge pasting device for use in a semi-enclosed space environment according to claim 1, characterized in that: The liquid-filled injection tube is filled with a cleaning agent, and the cleaning agent is one of acetone, alcohol or ethyl acetate.

5. The semi-automatic strain gauge pasting device for use in a semi-enclosed space environment according to claim 1, characterized in that: The movable positioning seat (12) is provided with a recovery groove, and when not in operation, the electric polishing module (3), the cleaning module (4) and the glue coating patch module (5) can be retracted into the recovery groove.

6. The semi-automatic strain gauge pasting device for use in a semi-enclosed space environment according to claim 1, characterized in that: The wire-drawing type glue squeezing mechanism adopts 502 glue for glue coating.

7. The semi-automatic strain gauge pasting device for use in a semi-enclosed space environment according to claim 1, characterized in that: The suction cup modules (6) include at least three groups.

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