Convenient pasting device for aviation hydraulic conduit strain gauge

Abstract

The utility model relates to the technical field of pressure testing of aviation hydraulic conduits, in particular to a convenient pasting device for strain gauges of aviation hydraulic conduits, which comprises a fixed hoop seat comprising a first semicircular hoop disc and a second semicircular hoop disc which are rotationally connected with each other. The first semicircular hoop disc and the second semicircular hoop disc are provided with sliding grooves which are arranged in the radial direction of the detected guide pipe. The sliding seat comprises a sliding table mounted in the sliding groove in a sliding manner and a button connected with the sliding table; the strain gauge adsorption leather bag is detachably connected to the bottom of the sliding table; and an air exhaust leather bag. According to the utility model, high-precision pasting of the strain gauge on the aviation hydraulic conduit can be rapidly realized, the strain gauge adsorption leather bag is matched with the hose and the air exhaust leather bag, the strain gauge can be adsorbed in the mounting groove, and convenient positioning of the strain gauge is realized in a small space; the strain gauge adsorption leather bag and the fixing hoop seat are fixed through the wedge-shaped groove, and the requirement for easy-to-damage replacement of the strain gauge adsorption leather bag is met.

Description

Technical Field

[0001] This utility model relates to the field of aviation hydraulic conduit pressure testing technology, specifically a convenient adhesive device for bonding strain gauges to aviation hydraulic conduits. Background Technology

[0002] With the advancement of my country's aviation industry, hydraulic pipeline systems are increasingly developing towards higher power and higher pressure, which places higher demands on the reliability research of pipeline systems and requires extensive testing and optimization. To practically test the vibration response of hydraulic pipelines under operating conditions, it is often necessary to attach numerous strain gauges for vibration stress measurement. For example... Figure 1 As shown, strain measurement of aerospace hydraulic conduits requires attaching strain gauges at a specified standard distance from the pipe joint, according to test requirements. Two strain gauges are attached at each point, with the two gauges distributed at 90° along the cross-section of the conduit being tested. However, to accommodate the limited space and high precision required for attaching strain gauges in aerospace hydraulic conduits, traditional methods often involve manual attachment, which is inefficient. Therefore, designing a convenient strain gauge attachment device suitable for aerospace hydraulic conduits is essential for improving test efficiency and ensuring testing accuracy. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model proposes a convenient adhesive device for bonding strain gauges to aviation hydraulic conduits.

[0004] The technical problem to be solved by this utility model is achieved by the following technical solution:

[0005] A convenient adhesive bonding device for strain gauges in aviation hydraulic conduits, comprising:

[0006] A fixing bracket is used to fix the test tube. The fixing bracket includes a first semi-circular bracket and a second semi-circular bracket that are rotatably connected to each other. The first semi-circular bracket and the second semi-circular bracket are provided with sliding grooves arranged radially along the test tube.

[0007] A slide block for providing the pressing pressure required during adhesion, the slide block including a slide table slidably mounted in the slide groove and a button connected to the slide table;

[0008] A strain gauge adsorption bladder is used to install and position strain gauges. The strain gauge adsorption bladder is detachably connected to the bottom of the slide table. The interior of the strain gauge adsorption bladder is hollow, and a strain gauge mounting groove is provided at the bottom of the strain gauge adsorption bladder.

[0009] An air extraction bladder, connected to the strain gauge adsorption bladder via a flexible tube, is used to extract air from inside the strain gauge adsorption bladder to create negative pressure, causing the strain gauge adsorption bladder to adhere to the strain gauge.

[0010] As a further improvement of this utility model, the first semi-circular hoop and the second semi-circular hoop are made of a material that does not adhere to 502 glue.

[0011] As a further improvement of this utility model, the first semi-circular hoop and the second semi-circular hoop are rotatably connected at one end by a rotating pin, and fixedly connected at the other end by a locking bolt.

[0012] As a further improvement of this utility model, two grooves are provided on each of the two semicircular hoop plates, and the two grooves on the same semicircular hoop plate are distributed at 90°.

[0013] As a further improvement of this utility model, the button passes through the semi-circular hoop and is fitted with a spring, one end of which abuts against the outer surface of the semi-circular hoop.

[0014] As a further improvement of this utility model, the bottom of the slide is arc-shaped and has the same curvature as the contact surface of the test tube, and the bottom of the slide is provided with a strain gauge adsorption bladder fixing wedge groove.

[0015] As a further improvement of this utility model, the top of the strain gauge adsorption bladder is provided with a fixed wedge-shaped protrusion that cooperates with the fixed wedge groove of the strain gauge adsorption bladder, and a hose connector that connects to the hose is provided on one side.

[0016] As a further improvement of this utility model, the strain gauge mounting groove is provided with a number of small suction holes that communicate with the interior of the strain gauge adsorption bladder.

[0017] As a further improvement of this utility model, the strain gauge adsorption bladder is integrally molded from silicone rubber material.

[0018] The beneficial effects of this utility model are:

[0019] This invention provides a convenient strain gauge bonding device for aviation hydraulic conduits, enabling rapid and high-precision bonding of strain gauges onto aviation hydraulic conduits, solving the problem of low efficiency in manual bonding. By designing a fixing bracket, the strain gauges are bonded at a standard distance specified in the test, ensuring that two strain gauges are bonded at a 90° angle, greatly improving bonding accuracy. The strain gauge adsorption bladder, in conjunction with the hose and vacuum bladder, can adsorb the strain gauge within the mounting groove, achieving convenient positioning of the strain gauge in a small space. The wedge-shaped groove fixing of the strain gauge adsorption bladder and the fixing bracket also addresses the need for easy replacement of the strain gauge adsorption bladder. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0021] Figure 1 This is a schematic diagram of the bonding method for strain gauges in aviation hydraulic conduits.

[0022] Figure 2 This is a schematic diagram of the structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the fixed hoop structure in this utility model;

[0024] Figure 4 This is a schematic diagram of the slide block structure in this utility model;

[0025] Figure 5 This is a schematic diagram of the strain gauge adsorption bladder structure in this utility model;

[0026] Figure 6 This is a schematic diagram of the cross-sectional structure of the strain gauge adsorption bladder in this utility model.

[0027] In the diagram: 1. Test tube; 2. Fixing clamp; 201. First semi-circular clamp; 202. Second semi-circular clamp; 203. Rotating pin; 204. Locking bolt; 205. Slide groove; 3. Slide seat; 301. Slide table; 302. Button; 303. Spring; 304. Strain gauge adsorption bladder fixing wedge groove; 4. Strain gauge adsorption bladder; 401. Hose connector; 402. Fixing wedge protrusion; 403. Suction hole; 404. Strain gauge mounting groove; 5. Hose; 6. Suction bladder. Detailed Implementation

[0028] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0029] like Figures 2 to 6 As shown, a convenient adhesive device for strain gauges in aviation hydraulic conduits mainly includes a fixing bracket 2, a sliding base 3, a strain gauge adsorption bladder 4, a hose 5, and a vacuum bladder 6.

[0030] The fixing bracket 2 is used to fix the tested conduit 1. The fixing bracket 2 includes a first semi-circular clamp plate 201, a second semi-circular clamp plate 202, a rotating pin 203, and a locking bolt 204. One end of the first semi-circular clamp plate 201 and the second semi-circular clamp plate 202 are rotatably connected to each other by the rotating pin 203, and the other end is locked and fixed by the locking bolt 204. Both the first semi-circular clamp plate 201 and the second semi-circular clamp plate 202 are provided with two sliding grooves 205. The sliding grooves 205 are arranged radially along the tested conduit 1, and the two sliding grooves 205 on the same semi-circular clamp plate are distributed at 90°. Furthermore, both the first semi-circular clamp plate 201 and the second semi-circular clamp plate 202 are made of a material that does not adhere to 502 glue, so as to prevent excess glue from sticking the device to the conduit and affecting disassembly and assembly.

[0031] The slide block 3 provides the pressing pressure required for bonding. Two sets of slide blocks 3 are provided, correspondingly positioned within two grooves 205 on the same semi-circular clamp. Each slide block 3 includes a slide platform 301, a button 302, and a spring 303. The slide platform 301 is radially slidable within the groove 205. The bottom of the slide platform 301 is arc-shaped, and the curvature of the guide tube contact surface is consistent, ensuring complete contact between the strain gauge and the guide tube surface when the button 302 is pressed, guaranteeing bonding quality. The bottom of the slide platform 301 also has a strain gauge adsorption bladder fixing wedge groove 304. The button 302 passes through the semi-circular clamp and connects to the slide platform 301. The spring 303 is sleeved on the button 302, with one end abutting against the outer surface of the semi-circular clamp.

[0032] The strain gauge adsorption bladder 4 is used to install and position the strain gauge. The strain gauge adsorption bladder 4 is integrally molded from a silicone rubber material that is non-adhesive with 502 glue, and has a hollow internal structure. The strain gauge adsorption bladder 4 includes a hose connector 401 and a fixing wedge-shaped protrusion 402. The hose connector 401 is located on one side of the strain gauge adsorption bladder 4, and the fixing wedge-shaped protrusion 402 is located on the top of the strain gauge adsorption bladder 4. The fixing wedge-shaped protrusion 402 cooperates with the fixing wedge groove 304 of the strain gauge adsorption bladder to fix the strain gauge adsorption bladder 4 to the bottom of the slide 3. The bottom of the strain gauge adsorption bladder 4 is provided with a strain gauge mounting groove 404 for installing and positioning the strain gauge. The strain gauge mounting groove 404 is provided with three small suction holes 403 that communicate with the interior of the strain gauge adsorption bladder 4.

[0033] Two of each of the vacuum bladder 6 and the hose 5 are provided, which are matched with two sets of strain gauge adsorption bladders 4. The vacuum bladder 6 is used to extract the air inside the strain gauge adsorption bladder 4 to generate negative pressure so that the strain gauge adsorption bladder 4 adsorbs the strain gauge.

[0034] Working principle and usage process of this utility model:

[0035] First, fix the strain gauge adsorption bladder 4 to the strain gauge adsorption bladder fixing wedge groove 304 on the slide block 3 via the fixing wedge protrusion 402 on it. Then, place the slide platform 301 of the slide block 3 into the slide groove 205 of the fixing bracket 2. The button 302 on the slide block 3 can be unscrewed. After placing the slide platform into the slide groove, insert the spring 303 and screw the button 302 on to install the slide block 3 onto the fixing bracket 2. Install both slide blocks 3 at a 90° angle onto the fixing bracket 2 according to the test requirements. Finally, fit the assembled fixing bracket 2 onto the test guide tube 1 according to the standard distance given in the test, and firmly fix it to the guide tube with the locking bolt 204 on the fixing bracket 2. Connect the hose 5 and the suction bladder 6 to the hose connector 401 of the strain gauge adsorption bladder 4. The bonding preparation is complete.

[0036] When beginning the bonding process, the strain gauge needs to be placed into the strain gauge mounting slot 404 of the strain gauge adsorption bladder 4. Then, the air is drawn out by the suction bladder 6 to firmly adsorb the strain gauge into the strain gauge mounting slot 404. Apply 502 glue to the mating surface of the strain gauge and the guide tube, and then press the button 302 on the slide 3 to make the strain gauge and the guide tube fit together and complete the bonding.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A convenient adhesive bonding device for strain gauges in aviation hydraulic conduits, characterized in that: The utility model relates to a kind of strain gauge fixing device, including: Fixed hoop seat (2) for fixing the measured catheter (1), the fixed hoop seat (2) includes first semicircular hoop disc (201) and second semicircular hoop disc (202) are connected with each other rotationally, first semicircular hoop disc (201) and second semicircular hoop disc (202) are provided with sliding groove (205) along the measured catheter (1) radially arrangement; Slide seat (3) for providing the pressing force required when pasting, the slide seat (3) includes slide platform (301) slidingly installed in the sliding groove (205), button (302) connected with the slide platform (301); Strain gauge suction skin bag (4) for installing and positioning strain gauge, the strain gauge suction skin bag (4) is detachably connected at the bottom of the slide platform (301), the inside of the strain gauge suction skin bag (4) is hollow structure, and the bottom of the strain gauge suction skin bag (4) is provided with strain gauge installation groove (404); Air suction skin bag (6) is communicated with the strain gauge suction skin bag (4) by hose (5), for extracting the air inside the strain gauge suction skin bag (4) to generate negative pressure and make the strain gauge suction skin bag (4) adsorb strain gauge.

2. The device for convenient pasting of strain gauges on hydraulic pipes of aircraft according to claim 1, characterized in that: First semicircular hoop disc (201) and second semicircular hoop disc (202) are made of material not adhered with 502 glue.

3. The device for convenient pasting of strain gauges on hydraulic pipes of aircraft according to claim 1, characterized in that: First semicircular hoop disc (201) and second semicircular hoop disc (202) are rotatably connected by rotating pin (203) at one end and fixedly connected by locking bolt (204) at the other end.

4. The device for convenient pasting of strain gauges on hydraulic pipes of aircraft according to claim 1, characterized in that: The sliding groove (205) on two semicircular hoop discs is provided with two, and the two sliding grooves (205) on the same semicircular hoop disc are distributed at 90 °.

5. The device for convenient pasting of strain gauges on hydraulic pipes of aircraft according to claim 1, characterized in that: The button (302) passes through semicircular hoop disc, and spring (303) is sleeved on it, and one end of the spring (303) is abutted on the outer side of semicircular hoop disc.

6. The device for convenient pasting of strain gauges on hydraulic pipes of aircraft according to claim 1, characterized in that: The bottom of the slide platform (301) is arc-shaped and consistent with the arc of the adhering surface of the measured catheter (1), and the bottom of the slide platform (301) is provided with strain gauge suction skin bag fixing wedge groove (304).

7. The device for convenient pasting of strain gauges on hydraulic pipes of aircraft according to claim 6, characterized in that: The top of the strain gauge suction skin bag (4) is provided with fixed wedge-shaped protrusion (402) matched with the strain gauge suction skin bag fixing wedge groove (304), and one side is provided with hose joint (401) connected with the hose (5).

8. The device for convenient pasting of strain gauges on hydraulic pipes of aircraft according to claim 1, characterized in that: The strain gauge installation groove (404) is provided with a plurality of air suction small holes (403) communicated with the inside of the strain gauge suction skin bag (4).

9. The device for convenient pasting of strain gauges on hydraulic pipes of aircraft according to claim 1, characterized in that: The strain gauge suction skin bag (4) is integrally molded by silicone rubber material.

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