Strain gauge protection device for real ship test

Abstract

The utility model relates to a strain gauge protection device for a real ship test, which comprises a pair of side blocking structural members, the two side blocking structural members are arranged on the surface of a structural object pasted with a strain gauge, and the strain gauge is positioned between the two side blocking structural members; the upper blocking structural member is arranged opposite to the strain gauge, one end of the upper blocking structural member is connected with one side blocking structural member, the other end of the upper blocking structural member is connected with the other side blocking structural member, and a door-shaped structure is defined by the two side blocking structural members and the upper blocking structural member; and the fixing structural member is used for detachably and fixedly connecting the side blocking structural member with the surface of the structure, so that the strain gauges are protected, treading or other damage situations in the actual ship test process are prevented, and the quality efficiency and data validity of the actual ship test are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of tests and measurements, in particular to a strain gauge protection device for full-scale ship tests. Background Art

[0002] Structural stress and strain measurement is an important part of full-scale ship tests for submarine models. Currently, the commonly used strain measurement method is the electrical measurement method based on strain gauges.

[0003] Due to the accelerated pace of work at all stages of the model under the new situation, there are many cross-operations during the full-scale ship test process and the on-site environment is extremely complex. After the strain gauges are pasted and sealed, they are often stepped on or damaged in other ways, resulting in not only a large amount of time being wasted on repair, but also some damage situations with unobvious appearances being reflected only during the test measurement, seriously affecting the quality, efficiency and data validity of the full-scale ship test.

[0004] Therefore, the safety protection of strain gauges has become a relatively prominent problem. Content of the Utility Model

[0005] The applicant of the present utility model aims at the above-mentioned disadvantages in the existing production technology, and provides a strain gauge protection device for full-scale ship tests, so as to protect the strain gauges and prevent them from being stepped on or damaged in other ways during the full-scale ship test process, and ensure the quality, efficiency and data validity of the full-scale ship test.

[0006] The technical solution adopted by the present utility model is as follows:

[0007] A strain gauge protection device for full-scale ship tests, comprising

[0008] A pair of side blocking structural members, the two side blocking structural members are arranged on the surface of the structure where the strain gauges are pasted, and the strain gauges are located between the two side blocking structural members;

[0009] An upper blocking structural member, the upper blocking structural member is arranged opposite to the strain gauges, one end of the upper blocking structural member is connected to one side blocking structural member, the other end of the upper blocking structural member is connected to the other side blocking structural member, and the two side blocking structural members and the upper blocking structural member enclose to form a portal structure;

[0010] A fixing structural member, the fixing structural member is used for detachably and fixedly connecting the side blocking structural members with the surface of the structure.

[0011] As a further improvement of the above technical solution:

[0012] The structure of the upper blocking structural member is: including a connecting rod, both ends of the connecting rod are respectively inserted through the two side blocking structural members, limit nuts are arranged at both ends of the connecting rod, the limit nuts are threadedly connected with the connecting rod, and the two side blocking structural members are limited between the two limit nuts.

[0013] The structure of the side stop structure is: it includes a plate-like body with a rectangular structure, a seat plate is arranged on one side of the plate-like body, the seat plate cooperates with the surface of the structure, the strain gauge is located between the two seat plates, and the side of the plate-like body facing away from the seat plate is connected to the upper stop structure.

[0014] The cross section of the side stop structure is L-shaped.

[0015] The seat plate is provided with a groove with an opening toward the surface of the structure, and a magnetic strip is provided in the groove. The magnetic strip detachably and fixedly connects the seat plate to the surface of the structure in a magnetically attractive manner, and the fixed structural member includes the magnetic strip.

[0016] A first fixing body and a second fixing body are arranged on the surface of the structure to which the strain gauge is attached, the strain gauge is located between the first fixing body and the second fixing body, and the arrangement direction of the first fixing body and the second fixing body is perpendicular to the arrangement direction of the two side stop structural members;

[0017] The fixing structure comprises a first fixing ear plate and a second fixing ear plate arranged on a side surface of the plate-shaped body, and also comprises a first fixing shaft and a second fixing shaft;

[0018] One end of the first fixed shaft is fixedly connected to the first fixed ear plate, and the other end of the first fixed shaft abuts against the first fixed body. One end of the second fixed shaft is fixedly connected to the first fixed ear plate, and the other end of the second fixed shaft abuts against the second fixed body, so that the side stop structure is detachably fixedly connected to the surface of the structure.

[0019] The number of the first fixed shafts is two and they are arranged in parallel, and the number of the second fixed shafts is two and they are arranged in parallel.

[0020] The first fixed axis and the second fixed axis are arranged alternately.

[0021] The first fixed shaft is a screw rod and is slidably connected to the first fixed ear plate. A pair of first fixed nuts are screwed on the first fixed shaft. The two first fixed nuts are located on both sides of the first fixed ear plate and are used to detachably and fixedly connect the first fixed shaft to the first fixed ear plate.

[0022] The second fixed shaft is a screw rod and is slidably connected to the second fixed ear plate. A pair of second fixing nuts are threaded on the second fixed shaft. The two second fixing nuts are located on both sides of the second fixed ear plate and are used to detachably and fixedly connect the second fixed shaft to the second fixed ear plate.

[0023] The actual ship has multiple T-shaped strengthening structures arranged at intervals, and the surface of the structure includes the outer surface of the flange of the T-shaped strengthening structure.

[0024] The fixed structural member includes a clamp, the clamp includes a clamping groove, the clamping groove is a through groove structure with a U-shaped cross section, the seat plate and the flange are located in the clamping groove, a bolt is installed on the clamping groove, and the end of the bolt presses the seat plate and the flange tightly together, detachably fixing and connecting the seat plate, the flange and the clamping groove.

[0025] The beneficial effects of the present utility model are as follows:

[0026] The structure of the present utility model is compact, reasonable, and easy to operate. By arranging partition structure members on both sides and above the strain gauge, the walking route of the test personnel is avoided from the strain gauge, and at the same time, protection is provided from multiple directions to prevent other movable components from damaging the strain gauge, thereby protecting the strain gauge and preventing it from being stepped on or damaged during the actual ship test, ensuring the quality, efficiency, and data validity of the actual ship test.

[0027] The present utility model also has the following advantages:

[0028] (1) A fixed shaft is installed on the side baffle structure member, and the two sides of the side baffle structure member are extended through the fixed shaft and abutted against two fixed bodies, thereby maintaining the position of the side baffle structure member on the surface of the structure and improving the stability of the connection between the side baffle structure member and the surface of the structure.

[0029] (2) Using a clamp as the fixed structural member to connect the seat plate of the side baffle structure member and the flange makes the connection between the side baffle structure member and the flange more stable. Description of the Drawings

[0030] Figure 1 is a schematic structural diagram of the present utility model.

[0031] Figure 2 is a schematic installation diagram of the present utility model.

[0032] Figure 3 is Figure 2 a partial cross-sectional view of

[0033] Figure 4 is another schematic installation diagram of the present utility model.

[0034] Figure 5 is the front view of the present utility model.

[0035] Figure 6 is Figure 5 a cross-sectional view of section A-A in

[0036] Figure 7 isFigure 5 Cross-sectional view of section BB.

[0037] Figure 8 for Figure 5 Cross-sectional view of section CC.

[0038] Figure 9 This is the front view of the utility model (including the clip).

[0039] Figure 10 It is a schematic structural diagram of the card clip of the present utility model.

[0040] in:

[0041] 1. Side stop structure; 11. Plate-shaped body; 12. Seat plate;

[0042] 2. Upper stop structure; 21. Connecting rod; 22. Limit nut;

[0043] 3. Magnetic stripe;

[0044] 4. First fixing ear plate; 41. First fixing shaft; 42. First fixing nut;

[0045] 5. Second fixing ear plate; 51. Second fixing shaft; 52. Second fixing nut;

[0046] 6. T-shaped reinforcement structure; 61. Wing plate; 62. Web plate;

[0047] 7. Clip; 71. Slot; 72. Bolt. DETAILED DESCRIPTION

[0048] The specific implementation of the utility model is described below in conjunction with the accompanying drawings.

[0049] Embodiment 1:

[0050] like Figures 1-4 As shown, the strain gauge protection device for actual ship testing of this embodiment includes a pair of side stop structures 1, an upper stop structure 2 and a fixed structure.

[0051] Two side block structural members 1 are arranged on the surface of the structure to which the strain gauge is attached, and the strain gauge is located between the two side block structural members 1;

[0052] The upper block structure 2 is arranged opposite to the strain gauge, one end of the upper block structure 2 is connected to a side block structure 1, and the other end of the upper block structure 2 is connected to another side block structure 1, and the two side block structures 1 and the upper block structure 2 are enclosed to form a door-shaped structure;

[0053] The fixed structure member is used to detachably and fixedly connect the side stop structure member 1 to the surface of the structure.

[0054] The actual ship has multiple T-shaped strengthening structures 6 arranged at intervals. The T-shaped strengthening structure 6 includes a web 62 welded to the hull and a flange 61 perpendicular to the web 62. The cross-section of the T-shaped strengthening structure 6 is T-shaped. The T-shaped strengthening structure 6 is the rib commonly referred to in the art. For the actual ship to be tested, the surface of the structure where the strain gauges are pasted can be the hull surface or the outer surface of the flange 61 of the T-shaped strengthening structure 6.

[0055] By arranging partition structure members on both sides and above the strain gauges, the walking route of the testers is avoided from the strain gauges. At the same time, protection is provided from multiple directions to prevent other moving components from damaging the strain gauges, thereby protecting the strain gauges and preventing them from being stepped on or damaged in other ways during the actual ship test, ensuring the quality efficiency and data validity of the actual ship test.

[0056] The upper partition structure member 2 is detachably connected to the two side partition structure members 1. For example, Figure 1 As shown, the structure of the upper partition structure member 2 is: it includes a connecting rod 21. The two ends of the connecting rod 21 are respectively inserted into the two side partition structure members 1. Limit nuts 22 are arranged at both ends of the connecting rod 21. The limit nuts 22 are threadedly connected to the connecting rod 21 and limit the two side partition structure members 1 between the two limit nuts 22.

[0057] The upper partition structure member 2 is located above the strain gauges relative to the strain gauges pasted on the surface of the structure. The upper partition structure member 2 has a simple structure and is easy to install. The limit nuts 22 are in contact with the two side partition structure members 1. On the basis that the two side partition structure members 1 are detachably and fixedly connected to the surface of the structure, by adjusting the position of the limit nuts 22 on the connecting rod 21, the distance between the two side partition structure members 1 is adjusted. The upper partition structure member 2 not only provides protection from above the strain gauges but also realizes the function of connecting the two side partition structure members 1, ensuring the stability of the portal structure.

[0058] For example, Figure 1 As shown, the structure of the side partition structure member 1 is: it includes a plate-shaped body 11 with a rectangular structure. A seat plate 12 is arranged on one side edge of the plate-shaped body 11. The seat plate 12 cooperates with the surface of the structure. The strain gauges are located between the two seat plates 12. The side of the plate-shaped body 11 facing away from the seat plate 12 is connected to the upper partition structure member 2. The connecting rod 21 is a screw rod and is inserted into the through hole in the plate-shaped body 11.

[0059] For example, Figures 6-8 As shown, the cross-section of the side partition structure member 1 is L-shaped.

[0060] For example, Figure 1 、 Figures 6-8 As shown, the seat plate 12 is provided with a groove with an opening facing the surface of the structure. A magnetic strip 3 is arranged in the groove. The magnetic strip 3 detachably and fixedly connects the seat plate 12 to the surface of the structure in a magnetic attraction manner. The fixing structure member includes the magnetic strip 3. For example,Figure 2 As shown, the side baffle structure member 1 of this embodiment is fixedly installed on the outer surface of the wing plate 61 of the T-shaped strengthening structure 6. Of course, it can also be fixedly installed on the hull surface.

[0061] Embodiment 2:

[0062] In Embodiment 1, the side baffle structure member 1 is fixedly connected to the surface of the structure by magnetic attraction, which can be applied to simple working conditions such as actual ship water testing. However, for the complex working conditions of actual ship deep diving tests, in order to further ensure the connection stability between the side baffle structure member 1 and the surface of the structure, the strain gauge protection device of this embodiment further optimizes the structure of the fixing structure member, and the solution is as follows:

[0063] As Figures 2-3 shown, a first fixing body and a second fixing body are provided on the surface of the structure where the strain gauge is pasted. The strain gauge is located between the first fixing body and the second fixing body. The arrangement directions of the first fixing body and the second fixing body are perpendicular to the arrangement directions of the two side baffle structure members 1;

[0064] The fixing structure member includes a first fixing ear plate 4 and a second fixing ear plate 5 provided on one side surface of the plate-shaped body 11, and also includes a first fixing shaft 41 and a second fixing shaft 51;

[0065] One end of the first fixing shaft 41 is fixedly connected to the first fixing ear plate 4, and the other end of the first fixing shaft 41 abuts against the first fixing body. One end of the second fixing shaft 51 is fixedly connected to the first fixing ear plate 4, and the other end of the second fixing shaft 51 abuts against the second fixing body, detachably fixing and connecting the side baffle structure member 1 to the surface of the structure.

[0066] Specifically, the first fixing body and the second fixing body can be the webs 62 of two adjacent T-shaped strengthening structures 6, or can be other two adjacent structures. The strain gauge is arranged on the hull surface between the first fixing body and the second fixing body, and it is also applicable when the strain gauge is located on the hull surface at the root of the T-shaped strengthening structure 6; the arrangement directions of the first fixing ear plate 4 and the second fixing ear plate 5 are the same as the arrangement directions of the first fixing body and the second fixing body, and are arranged at intervals on the surface of the plate-shaped body 11.

[0067] Fixing shafts are installed on the side baffle structure member 1. After the two sides of the side baffle structure member 1 are extended through the fixing shafts and abut against the two fixing bodies, the position of the side baffle structure member 1 on the surface of the structure is maintained, improving the connection stability between the side baffle structure member 1 and the surface of the structure. Of course, magnetic strips 3 can also be arranged in the grooves of the seat plate 12, or rubber strips can be used to replace the magnetic strips 3. The seat plate 12 is in contact with the surface of the structure through the rubber strips, reducing the influence of the protection device on the external anti-corrosion coating.

[0068] Further, as Figures 2-3 shown, asFigures 5-9 As shown, the number of the first fixed shafts 41 is two and they are arranged in parallel, and the number of the second fixed shafts 51 is two and they are arranged in parallel. The contact points with the fixed body are increased, making the connection between the side baffle structure member 1 and the surface of the structure more stable. The corresponding number of the first fixed ear plates 4 and the second fixed ear plates 5 is also two.

[0069] The first fixed shafts 41 and the second fixed shafts 51 are arranged in a staggered manner.

[0070] The first fixed shaft 41 is a screw rod and is slidably connected to the first fixed ear plate 4. A pair of first fixed nuts 42 are screwed on the first fixed shaft 41. The two first fixed nuts 42 are located on both sides of the first fixed ear plate 4 and are used for detachably and fixedly connecting the first fixed shaft 41 and the first fixed ear plate 4;

[0071] The second fixed shaft 51 is a screw rod and is slidably connected to the second fixed ear plate 5. A pair of second fixed nuts 52 are screwed on the second fixed shaft 51. The two second fixed nuts 52 are located on both sides of the second fixed ear plate 5 and are used for detachably and fixedly connecting the second fixed shaft 51 and the second fixed ear plate 5.

[0072] Specifically, according to the distance between the first fixed body and the second fixed body and the position of the strain gauge, the first fixed shafts 41 and the second fixed shafts 51 with different lengths can be replaced, or the positions of the first fixed nuts 42 on the first fixed shaft 41 and the positions of the second fixed nuts 52 on the second fixed shaft 51 can be adjusted, so that fixed shafts of a certain length can be applicable to various situations, reducing the quantity and specifications of the spare parts of the protection device.

[0073] Embodiment 3:

[0074] For the case of the outer surface of the wing plate 61 of the T-shaped strengthening structure 6 on the surface of the structure, different from Embodiment 2, as Figure 2 、 Figure 4 、 Figures 9-10 shown, the actual ship has a plurality of T-shaped strengthening structures 6 arranged at intervals, and the surface of the structure includes the outer surface of the wing plate 61 of the T-shaped strengthening structure 6;

[0075] The fixing structure member includes a clamp 7. The clamp 7 includes a clamping groove 71. The clamping groove 71 is a through groove structure with a U-shaped cross section. The seat plate 12 and the wing plate 61 are located in the groove of the clamping groove 71. A bolt 72 is installed on the clamping groove 71. The end of the bolt 72 presses the seat plate 12 and the wing plate 61 tightly together, detachably and fixedly connecting the seat plate 12, the wing plate 61 and the clamping groove 71.

[0076] Using the clamp 7 as the fixing structure member to connect the seat plate 12 of the side baffle structure member 1 and the wing plate 61 makes the connection between the side baffle structure member 1 and the wing plate 61 more stable.

[0077] When connecting the seat plate 12 of the side baffle structure member 1 to the wing plate 61 by using the clip 7, a magnetic strip 3 can be arranged in the groove of the seat plate 12, or the magnetic strip 3 can be replaced by a rubber strip, and the seat plate 12 is in contact with the surface of the structure through the rubber strip, so as to reduce the influence of the protection device on the external anti-corrosion coating.

[0078] For the strain gauge protection device of the above embodiments, before use, assemble the protection device according to the installation position of the strain gauge and the actual test working conditions. For the full-scale ship test, use magnetic fixation, and for the full-scale ship deep diving test, use rigid fixation, which can meet various test conditions.

[0079] The above description is an explanation of the present invention, not a limitation of the invention. The scope defined by the present invention is referred to the claims, and any form of modification can be made within the protection scope of the present invention.

Claims

1. A strain gauge protection device for in-service ship tests, characterized in that: include A pair of side stop structural members (1), the two side stop structural members (1) being arranged on the surface of the structure to which the strain gauge is attached, and the strain gauge is located between the two side stop structural members (1); An upper block structure (2), the upper block structure (2) being arranged opposite to the strain gauge, one end of the upper block structure (2) being connected to a side block structure (1), the other end of the upper block structure (2) being connected to another side block structure (1), the two side block structures (1) and the upper block structure (2) being enclosed to form a door-shaped structure; A fixed structural member is used to detachably and fixedly connect the side stop structural member (1) to the surface of the structure.

2. The strain gauge protection device for full-scale ship tests according to claim 1, characterized in that: The structure of the upper block structure (2) is as follows: it comprises a connecting rod (21), the two ends of the connecting rod (21) are respectively passed through the two side block structures (1), and both ends of the connecting rod (21) are provided with limiting nuts (22), the limiting nuts (22) are threadedly connected to the connecting rod (21), and the two side block structures (1) are limited between the two limiting nuts (22).

3. The strain gauge protection device for full-scale ship tests according to claim 1, characterized in that: The structure of the side stop structure (1) is as follows: it comprises a plate-like body (11) of a rectangular structure, a seat plate (12) is arranged on one side of the plate-like body (11), the seat plate (12) cooperates with the surface of the structure, the strain gauge is located between the two seat plates (12), and the side of the plate-like body (11) facing away from the seat plate (12) is connected to the upper stop structure (2).

4. The strain gauge protection device for in-service ship tests according to claim 3, characterized in that: The cross section of the side stop structure (1) is L-shaped.

5. The strain gauge protection device for in-service ship tests according to claim 3, characterized in that: The seat plate (12) is provided with a groove with its opening facing the surface of the structure, a magnetic strip (3) is provided in the groove, and the magnetic strip (3) detachably and fixedly connects the seat plate (12) and the surface of the structure in a magnetically attractive manner, and the fixed structural component includes the magnetic strip (3).

6. The strain gauge protection device for in-service ship tests according to claim 3, characterized in that: A first fixing body and a second fixing body are arranged on the surface of the structure to which the strain gauge is attached, the strain gauge is located between the first fixing body and the second fixing body, and the arrangement direction of the first fixing body and the second fixing body is perpendicular to the arrangement direction of the two side stop structural members (1); The fixed structure comprises a first fixed ear plate (4) and a second fixed ear plate (5) arranged on a side surface of the plate-shaped body (11), and also comprises a first fixed shaft (41) and a second fixed shaft (51); One end of the first fixed shaft (41) is fixedly connected to the first fixed ear plate (4), and the other end of the first fixed shaft (41) abuts against the first fixed body; one end of the second fixed shaft (51) is fixedly connected to the first fixed ear plate (4), and the other end of the second fixed shaft (51) abuts against the second fixed body, so that the side stop structure (1) is detachably fixedly connected to the surface of the structure.

7. The strain gauge protection device for full-scale ship tests according to claim 6, characterized in that: The number of the first fixed shafts (41) is two and they are arranged in parallel, and the number of the second fixed shafts (51) is two and they are arranged in parallel.

8. The strain gauge protection device for full-scale ship tests according to claim 6, characterized in that: The first fixed shaft (41) and the second fixed shaft (51) are arranged alternately.

9. The strain gauge protection device for full-scale ship tests according to claim 6, characterized in that: The first fixed shaft (41) is a screw rod and is slidably connected to the first fixed ear plate (4). A pair of first fixing nuts (42) are screwed onto the first fixed shaft (41). The two first fixing nuts (42) are located on both sides of the first fixed ear plate (4) and are used to detachably and fixedly connect the first fixed shaft (41) to the first fixed ear plate (4). The second fixed shaft (51) is a screw rod and is slidably connected to the second fixed ear plate (5). A pair of second fixing nuts (52) are screwed onto the second fixed shaft (51). The two second fixing nuts (52) are located on both sides of the second fixed ear plate (5) and are used to detachably and fixedly connect the second fixed shaft (51) to the second fixed ear plate (5).

10. The strain gauge protection device for in-service ship tests according to any one of claims 3-9, characterized in that: The actual ship has multiple T-shaped strengthening structures (6) arranged at intervals, and the surface of the structure includes the outer surface of the wing plate (61) of the T-shaped strengthening structure (6). The fixed structural member includes a clamp (7). The clamp (7) includes a card slot (71). The card slot (71) is a through slot structure with a U-shaped cross-section. The seat plate (12) and the wing plate (61) are located in the slot of the card slot (71). A bolt (72) is installed on the card slot (71). The end of the bolt (72) presses the seat plate (12) and the wing plate (61) tightly together, detachably and fixedly connecting the seat plate (12), the wing plate (61) and the card slot (71).

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